Cuvillier jul 2012 (53 resultados)
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 18,30
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The study investigated the influences of wood modification on the properties of Polyvinyl chloride (PVC) based Wood Polymer Composites (WPC). Various ethanolamines, L-arginine, pre-hydrolyzed and monomeric aminosilane, melamine and…acetic anhydride treatment were used to improve the adhesion between wood and polymer as well as water absorption behavior and resistance to basidiomycetes. Amine based treatments were chosen to change the nature of wood from acidic to basic in order to increase the compatibility with the acidic polymer. Treated and untreated wood flour, PVC and additives were dry blended in a mixer. The dry blend was compounded to granulate by counter-rotating twin screw extrusion and compression moulded into panels using a hydraulic press. Elemental analysis (nitrogen content) via gas chromatography showed expected fixation of aminosilane and melamine treatment. The nitrogen fixation of ethanolamine and L-arginine treated material were obviously reduced, whereas the amount and reactivity of the aminogroups influenced the fixation behavior. With increasing content of amino-groups and reactivity, the fixation was improved. Fourier transform infrared (FTIR) analyses revealed interactions between monoethanolamine and cell wall components. The amine based treatments changed the nature of wood from acidic to basic. An improvement of the interphase was detected via mechanical property testing. Tensile strength, elongation at break and unnotched impact strength of the composite were obviously increased by Larginine, ethanolamine and aminosilane treatments. It has to be considered that amine based treatments (monoethanolamine in this study) led to reduced thermal stability of the composite. Thermogravimetric analysis showed a decrease of onset temperature with increasing monoethanolamine content. Water repellence of the composite was improved by melamine, pre-hydrolyzed aminosilane and acetic acid treatment. Treated and untreated composites revealed high resistance against basidiomycetes. Due to the low initial moisture content and low weight loss of untreated and treated composites, no effect of the various modifications was distinguished. 88 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 20,66
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In this thesis four challenging problems concerning metal- or metalloid-containing systems were carefully studied in order to explain their properties, reactivities and selectivities. The first project focused on the dialkylzinc add…itions to unsaturated aldehydes. The reaction was proved to have bimetallic intermediates. The experimentally observed non-linear effect was addressed to the differences in stability of various zinc-ligand aggregates. Furthermore, the differences in regioselectivity between cinnamaldehyde and N-formylbenzylimine were traced back to the differences in the ¿-conjugation of both compounds. In contrary, the stereoselectivity of the reaction was controlled by the paracyclophane unit as well as by bulky substituents in the side-chain of the ligand. Based on these findings, a set of modifications for the ligand system were proposed and tested in silico. One of the compounds is expected to be superior to any previous catalysts. An important outcome from this study is the survey of methods used in calculations of reaction barrier heights. It is shown that economic DFT calculations, when extended by empirical dispersion corrections allow for the prediction of stereoselectivities. However, the prediction of the regioselectivities is a much more demanding task and only a consistent treatment of electron correlation can yield qualitative agreement with experimental findings. In this case, the computationally more expensive ¿ but even for large systems still applicable ¿ LPNO-CEPA/1 approach seems to be an efficient and reliable choice. 138 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 22,45
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Understanding the structure-property relationship of enamel is a basis to improve restorative and preventive dentistry. The structure-mechanical properties relationship of dental enamel (made of apatite fibers and a small amount of…organics and water) was studied. Enamel¿s elastic moduli, elastic/inelastic transition were quantified and the toughening mechanisms were identified for different hierarchical levels. During creep, the interrod regions are able to dissipate higher irreversible energy compared to the enamel rod regions. For enamel fracture, the crack tip toughness, the cohesive stresses and size of the cohesive zone at the crack-tip were quantified. 130 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 24,75
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Lead zirconate titanate (PZT) based piezoelectric ceramics are currently the most used for manufacturing actuators, sensors, resonators, transducers and other electromechanical devices due to a combination of excellent piezoelectric… properties, wider operating temperature range and a variety of other characteristics [1]. The major component for these piezoelectric ceramics which contributes about 60 wt% is the element lead (Pb). It is a soft element which is classified as a heavy metal and is also toxic. It has been used from as far back as the second century B.C in Rome when lead (II)- acetate [(Pb(CH3COO)2] was used for making wine because of its sweet flavor. Its harmful effects have been known for a long time ago because most of the deaths at the time were traced to it. Children are more susceptible to Pb attacks than adults because their central nervous system is more vulnerable. Lead has the ability to attach itself strongly to sulfhydryl group on proteins and distort the enzymes and structural proteins. It can also cleave to the ribophosphate backbone of transfer Ribonucleic acid (tRNA) catalyticallywith no evidence of a threshold and mimics or competes with calcium in the body. Some of the consequences of lead poisoning for children include; behavioral disorders, learning difficulties, low intelligence quotient etc. while hypertension and renal failure are some of the consequences of acute lead poisoning. Some of the sources of exposure to lead include leaded dishware, lead workers, electronics, paints, cosmetics etc. Recent studies indicate that there is no threshold for lead but 10µg/dL is seen to be the acceptable blood levels. The primary way of prevention is the avoidance of contact with leaded materials 146 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 25,55
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Intensification agriculture on sloping land in northwestern Vietnam has increased soil erosion and declined the soil fertility. In response to this decline in soil fertility, as well high output prices, highland farmers have increas…ingly turned to mineral fertilizers and high yielding varieties, and the rapid adoption of these has partly compensated for the underlying resource degradation process. However, these practices are not environmentally sustainable, and so long-term farm income levels could decline as a result.The objective of this studies is to explore the relationship between the decisions made within farm households and biophysical dynamics ¿ such as soil erosion and soil fertility change, in order to assess how the introduction of soil conservation practices affects soil fertility and farm household incomes, to identify possible constraints on the adoption of soil conservation practices, quantify trade-offs between sustainability and the income of farm households, and to appraise the possible policy options available in order to promote the adoption of soil conservation practices. The studies applied an integrated model using a software package called ¿Mathematical Programming-based Multi-Agent Systems¿ (MP-MAS) in combination processes manipulated using the Tropical Soil Productivity Calculator (TSPC). The model was calibrated to cover a 22.58 km2 catchment area in northwestern Vietnam that included 471 farm households, with each farm represented as an individual agent in the model. The results of the simulation showed that an increased use of mineral fertilizers improved crop yields and reduced soil nutrient losses. When soil conservation practices were included into the decision-making model, the area of land under these techniques remained low. The main constraints to the use of soil conservation practices identified included low crop yields and high labor requirements when compared to conventional practices, that is, those not using soil conservation techniques. 150 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 26,17
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In Israel, more than half of the national sheep flock is kept by Bedouin in the Negev desert.Extensive production systems co-exist besides semi-intensive systems with varying economic success. There is a constant regional demand for… sheep meat, but the local supply is not able to cover it. The wide gap between the performance potential of the commonly used and environmentally adapted local Awassi and improved sheep breeds suggests an increase in economic efficiency by intensification of breeding. The choice of a suitable breed for a specific system is seen as key factor for the farm success and requires the knowledge of the animals¿ adaptation. Information on the performance of Bedouin sheep flocks under the given harsh production conditions are, however, missing. The purpose of the study was thus a characterization of current production systems, the assessment of the aggregated performance of the different Awassi lines kept in those systems and the impact of socio-economic and production factors on the efficiency of Bedouin sheep production. Also breeding objectives of Bedouin sheep farmers were investigated. The role of new breeding technologies in the ongoing process of intensification of sheep farming systems was analyzed and discussed. 166 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 25,79
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Centrifugal separation of particles in a suspension is one of the most common problems appearing in industry such as chemical processing, mining and mineral processing, solid-fuel industry, food processing, waste water treatment, ph…armaceutical processes and biotechnology. The separation of the cream in the whole milk to obtain skimmed milk, the isolation of blood components, the purification of beverages, the removal of catalysts in multiphase reactors or the cleaning of waste water and industrial fluids such as lubricants or coolants, are some relevant examples where centrifugal separation is needed. Centrifuges are, together with sedimentation tanks and filters, one of the most commonly employed devices for mechanical solid-liquid separation. Sedimentation uses as its driving force a mass force based on the different densities of the phases. In sedimentation tanks this driving force is gravitational force while in centrifuges it is centrifugal force. Filters, instead, make use of differential pressure as a driving force. The choice of which technique should be applied for a specific separation task depends on the properties of the mixture, the purpose of the separation, whether the thickening of the solid phase or the clarification of the liquid, and the available time and space. The rapid development of the centrifugal technology nowadays allows high efficiencies separating very small particles, even in the nanometre range, from multiphase flows. 172 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 29,07
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Dynamic capabilities describe the firms' capacity to adapt their resources with regard to external shifts in order to maintain or to even enlarge competitive advantage. In this essay the author pursues three research objectives rega…rding dynamic capabilities. First, based on a literature review the author states that no appropriate dynamic capability concept exists that enables an empirical investigation of dynamic capabilities across industries, however, argues that such an investigation is possible, and outlines a first step to do so. The second research objective is focused on the value of dynamic capabilities. Using real option knowledge the author is able to outline a simple mathematical model. The results show that the value of a firm is not only given by the expected value, generated by the firm's resources in place, but also by the firm's options to react to environmental changes. Besides other externally given factors - like market development - the application of dynamic capabilities in terms of time has consequences on the expected firm value. The third research objective deals with the basic challenge of ambidextrous firms to achieve an optimal balance of exploitative and explorative activities with regard to market developments. Again, using real option knowledge the author is able to demonstrate that there exist defined points in time until when to maintain, stress, taper off and finally stop exploitative and explorative activities. A further development of the model even enables the prediction of the value maximizing points in time. 192 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 30,60
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Die Mensch-Maschine-Schnittstellen (HMIs) von Infotainmentsystemen der heutigen Premiumfahrzeuge sind sehr komplexe und eingebettete Systeme. Sie haben im Vergleich mit herkömmlichen PC-Applikationen besondere Eigenschaften, insbeso…ndere bezogen auf ihre Variabilität. Die Variabilität von Infotainmentsystem HMIs ergibt sich aus unterschiedlichen Fahrzeugmodellen, Produktserien, Märkten, Ausstattungen, System- sowie Sprachvarianten. Die hohe Anzahl der Varianten führt zu enorm hohem Testaufwand. Modellbasiertes Testen ist ein vielversprechender Ansatz, um den Testaufwand durch die automatische Testfallgenerierung und Testausführung zu reduzieren und gleichzeitig die Testabdeckung zu erhöhen. Während modellbasiertes Testen bereits für Funktionstests häufig eingesetzt wird, bleiben HMI Tests meist noch manuell oder teil-automatisiert. Außerdem kann durch manuelles Testen eine systematische Testabdeckung nur sehr schwierig erreicht werden. Zahlreiche Forschungsarbeiten befassen sich mit dem GUI-Testen. Variabilität ist im Bereich der Software-Produktentwicklung ein immer beliebteres Forschungsthema. Ein modellbasierter Testansatz für komplexe HMIs mit Berücksichtigung der Variabilität ist allerdings immer noch nicht vorhanden. 190 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 36,10
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Die Einführung von aktiven Sicherheitssystemen, basierend auf Fahrzeug-zu-Fahrzeug Kommunikation, hat ein großes Potential, die immer noch hohe Zahl von Verletzten und tödlich Verunglückten deutlich zu reduzieren. Dabei werden die F…ahrzeuge befähigt, regelmäßig und zusätzlich ereignisbasiert ihren Status anderen umliegenden Fahrzeugen mitzuteilen. In diesem Sinne wird die aktive Sicherheit für Fahrer und Insassen erhöht, weil jederzeit zuverlässige, hochaktuelle und sehr genaue Informationen zur Verfügung stehen.Derzeit werden die Protokolle und Mechanismen für die Fahrzeug-zu-Fahrzeug Kommunikation in verschiedenen Gremien standardisiert. In Europa ist hierfür das European Telecommunications Standards Institute (ETSI) zuständig. Für die Applikationsschicht sieht ETSI vor, dass drei verschiedene Nachrichtentypen für den Broadcast zur Verfügung stehen: die periodischen Cooperative Awareness Messages (CAMs), ereignisbasierte Decentralized Environmental Notification Messages (DENMs) und dienstorientierte Service Announcement Messages (SAMs). Insbesondere die Kommunikationslast, die durch die periodischen CAMs entsteht, kann leicht dazu führen, dass der Kommunikationskanal in Überlast gerät. Dabei handelt es sich um das grundsätzlich bekannte Problem der Skalierbarkeit des Medienzugriffs in drahtlosen Netzen, die deutlich mehr als 100 Knoten beinhalten (siehe z.B. 21). 232 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 37,05
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Indonesia is a favourite ecotourism destination in Southeast Asia and tourism in general plays an important role in the Indonesian economy. Being one of the world¿s largest archipelagos¿, with more than 17,503 islands sprawling acro…ss the Indian Ocean, Indonesia is one of the third top global megabiodiversity hotspots with rich natural ecosystems ranging from rainforests to mangrove systems and a high degree of insular endemism. The Indonesian archipelago is divided into two ecological regions ¿ the Sundaland (Asian zoogeographical region) and Wallacea (Australasian zoogeographical region) by the Wallace line. This line runs between the islands Bali and Lombok. Indonesia also boasts of a rich marine biodiversity with 20 % of the world¿s coral reefs and is biogeographically a part of the coral triangle. Nearly 45 % of Indonesia is still covered by natural ecosystems and one of the reasons for this is that only 6000 out of the 17,000 islands are permanently inhabited. While Sumatra and Java are the most popular tourist destinations, Indonesia also has one of the world¿s longest coastlines with popular beaches and island resorts in Bali, Lombok and Bintan islands. The waters around these islands also provide excellent and economical diving opportunities, with a very high coral diversity as for example in Bunaken Marine National Park in the northern tip of Sulawesi island and the Raja Ampat area in west Papua which according to Conservation International claims to have the highest marine diversity. Indonesia also has a rich cultural diversity with most of these cultural sites listed as world heritage sites. Ecotourism in Indonesia can be used not only as a tool for conservation of biodiversity but also to promote sustainable development especially for the local communities. While promoting ecotourism, it should also be seen that nature and culture are not harmed or destroyed. The International German Alumni Summer School aimed at addressing the issues of ecotourism potential and development in Indonesia and other countries in South-East Asia on an interdisciplinary platform and find solutions for sustainable and practically applicable nature conservation efforts. 240 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 42,75
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Caused by a rising mass customisation and the high variety of equipment versions, the flexibility of manufacturing systems in car production has to be increased.In this thesis a skill-based reconfiguration mechanism is presented to…enhance functional reconfigurability of industrial mobile robots. A novel reconfiguration mechanism allows to react self-organised to functional process changes. The result of this mechanism is the on-line integration of new robot functionalities into the current manufacturing process while maintaining the productivity of the mobile robot.Applied to an industrial mobile robot that is provided by AUDI AG, the suggested mechanism is validated in a real-world environment including the on-line verification of the reconfigured robot functionality in a Validity Check. 282 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 48,88
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Multiple pharmaceuticals, herbicides, fragrances and flavors manufactured on an industrial scale are known to involve a transition metal-catalyzed reaction in their synthesis.[1] Among these reactions, the most prominent reaction is… the asymmetric hydrogenation catalyzed by a transition metal. The relevance of these products can be noticed by the fact that numerous non-specialists are familiar with their names (e.g. L-DOPA, ibuprofen and vitamin E). The metal-catalyzed hydrogenation is an attractive reaction for asymmetric synthesis, since it combines highly desirable advantages such as perfect atom economy, high conversions, low catalyst loadings and mild reaction conditions.[2] All these characteristics are well appreciated in modern organic synthesis and explain the various applications of metal-catalyzed asymmetric hydrogenation, not only in academic research but also in industrial synthesis. Although this reaction has been explored for many years and an impressive number of enantioselective catalysts have been developed it is still investigated today. The main goals in this field today are to find solutions to render this reaction more universal, meaning applicable to a wider range of substrates, or to discover more generally applicable, effective, inexpensive and readily available catalysts. 342 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 17,29
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In diesem Beitrag gehen wir der Natur und dem Wesen der Information aus gegenwärtiger wissenschaftlicher und erkenntnistheoretischer Sicht nach. Wir verfolgen dabei die These, dass Information nicht nur für das Verständnis vom Aufba…u der Welt grundlegend ist, sondern auch fundamentale Bedeutung für den physikalischen Aufbau der Welt hat. Dies erfolgt auf der Basis der Frage nach dem Realen, d. h. der Rolle der Information als wirklichkeitsschaffendes Phänomen für den wahrnehmenden Menschen, und dem heutigen wissenschaftlichen Verständnis dazu.Vier Stränge naturwissenschaftlicher Erkenntnisbildung werden dabei verfolgt: Zunächst konzentrieren wir uns auf die Informationstheorie und auf die Thermodynamik. Wichtige Aspekte der Quantenphysik und des Quanten-Computing sowie schließlich Aspekte der Evolution und der Genetik bilden die beiden weiteren Stränge. Dabei berücksichtigen wir auch Denkansätze, die der Information als physikalisches Phänomen eine Bedeutung zuweisen.Die naturwissenschaftlichen Gesichtspunkte werden um einen Diskurs über relevante Aspekte von Statistik und Logik ergänzt. Statistik repräsentiert Information unter Einbeziehung des Aspekts Zufall und bildet in der Quantenphysik den Weg zur Beschreibung des Realen. Eine Ergänzung der klassischen Logik durch die sogenannte intuitionistische Logik basiert auf der Nachvollziehbarkeit von Aussagen bzw. der repräsentierten Information. Damit erhält die Information durch die Konstruktion aus ihrer Repräsentation eine wahrnehmbare Realität.Als wesentliches Ergebnis wird gezeigt, dass Information als neue 'Quintessenz' (in Anlehnung an die Quintessentia der Antike) verstanden werden kann, die nicht nur in das Bild der Naturwissenschaften und der Philosophie passt, sondern deren Wesen auch das Verständnis zur Verbindung zwischen der erfahrbaren Natur und der nicht verstehbaren Natur - weil unserem klassischem Naturverständnis entzogen - zu erfassen hilft. 92 pp. Deutsch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 18,00
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Es gibt eine Vielzahl von gesellschaftlichen Veränderungen, die sich auch im Sportniederschlagen (u.a. Pluralisierung, Individualisierung, Trendorientierung, Spaßorientierung und Enträumlichung). Auf der kommunalen Ebene reagieren d…ie Planungsverantwortlichen mit sogenannten Sportentwicklungsplanungen, um den veränderten Anforderungen des Sports gerecht zu werden. Entwicklungen in Gesellschaft und Sport spiegeln sich aber nicht nur auf der kommunalen Ebene, sondern auch ¿ und besonders ¿ in Institutionen wie dem Hochschulsport wider. So gilt, auch in diesem Bereich der Frage nachzugehen, welche Sportarten die Hochschulsportteilnehmer heute und in Zukunft treiben bzw. wünschen und welche Sportgewohnheiten sie an den Tag legen. Bis dato gibt es für den deutschen Hochschulsport kein entsprechendes Planungsinstrumentarium. Die vorliegende Untersuchung soll ein erster Schritt in dieser Richtung sein und als Basis für ein Entwicklungskonzept für den Würzburger Hochschulsport dienen. 116 pp. Deutsch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 18,19
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Die technisch vielseitigen und in großen Mengen eingesetzten Komplexbildner vomTyp der Polyaminopolycarbonsäuren (PAPC) werden durch konventionelle Methoden der Abwasserreinigung und Trinkwasseraufbereitung nur unzureichend eliminie…rt. Sie lassen sich daher in zahlreichen Oberflächengewässern und Trinkwässern nachweisen. Aus diesem Grund sollen die in die aquatische Umwelt gelangenden Mengen an PAPCs drastisch z.B. durch die gezielte biologische Reinigung von Abwasserteilströmen verringert werden. Der für die Reinigung EDTA-haltiger Abwässer eingesetzte Stamm BNC1 gehört zu den Alphaproteobakterien. Als nächster Verwandter wurde in der Literatur der Stamm Mesorhizobium loti angegeben. Im Rahmen dieser Arbeit BNC1 in die Gattung Chelativorans eingeordnet werden. Am Institut für Bioverfahrenstechnik der TU-Braunschweig konnte aus einer Mischkultur (MKA) der Stamm ANP11 isoliert werden, der PDTA als einzige Kohlenstoff, Stickstoff- und Energiequelle metabolisieren kann. Im Rahmen dieser Arbeit sind die von Baaß (2004) begonnenen Untersuchungen der PDTA-abbauenden Reinkultur ANP11 fortgesetzt und der postulierte Abbauweg geprüft worden. Weiterhin ist die Eignung der Mischkultur MKA für den praktischen Einsatz beim Abbau von PDTA überprüft und die Einflüsse von im Betrieb auftretenden möglichen Störfaktoren, z.B. Änderungen der physiologischen Bedingungen oder unterschiedliche Konzentrationen möglicher Abwasserinhaltsstoffe auf die Mikroorganismen, abgeschätzt worden. Die Prognose für eine biologische Reinigung PDTAhaltiger Abwasserteilströme mit Mikroorganismen der Mischkultur MKA ist günstig. Der genaue Abbauweg von PDTA durch den Stamm ANP11 konnte nicht vollständig geklärt werden, es wurden aber die Erkenntnisse über die zugehörigen Enzymsysteme vertieft. 118 pp. Deutsch.
- Tapa blanda
- Impresión bajo demanda
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemaniabuchversandmimpf2000
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 18,30
Envío por EUR 60,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 1 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The study investigated the influences of wood modification on the properties of Polyvinyl chloride (PVC) based Wood Polymer Composites (WPC). Various ethanolamines, L-arginine, pre-hydrolyzed and monomeric aminosilane, melamine and acet…ic anhydride treatment were used to improve the adhesion between wood and polymer as well as water absorption behavior and resistance to basidiomycetes. Amine based treatments were chosen to change the nature of wood from acidic to basic in order to increase the compatibility with the acidic polymer. Treated and untreated wood flour, PVC and additives were dry blended in a mixer. The dry blend was compounded to granulate by counter-rotating twin screw extrusion and compression moulded into panels using a hydraulic press.Elemental analysis (nitrogen content) via gas chromatography showed expected fixation of aminosilane and melamine treatment. The nitrogen fixation of ethanolamine and L-arginine treated material were obviously reduced, whereas the amount and reactivity of the aminogroups influenced the fixation behavior. With increasing content of amino-groups and reactivity, the fixation was improved. Fourier transform infrared (FTIR) analyses revealed interactions between monoethanolamine and cell wall components. The amine based treatments changed the nature of wood from acidic to basic. An improvement of the interphase was detected via mechanical property testing. Tensile strength, elongation at break and unnotched impact strength of the composite were obviously increased by Larginine, ethanolamine and aminosilane treatments. It has to be considered that amine based treatments (monoethanolamine in this study) led to reduced thermal stability of the composite. Thermogravimetric analysis showed a decrease of onset temperature with increasing monoethanolamine content. Water repellence of the composite was improved by melamine, pre-hydrolyzed aminosilane and acetic acid treatment. Treated and untreated composites revealed high resistance against basidiomycetes. Due to the low initial moisture content and low weight loss of untreated and treated composites, no effect of the various modifications was distinguished.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 88 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemaniabuchversandmimpf2000
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 20,66
Envío por EUR 60,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 1 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -In this thesis four challenging problems concerning metal- or metalloid-containing systems were carefully studied in order to explain their properties, reactivities and selectivities. The first project focused on the dialkylzinc additio…ns to unsaturated aldehydes. The reaction was proved to have bimetallic intermediates. The experimentally observed non-linear effect was addressed to the differences in stability of various zinc-ligand aggregates. Furthermore, the differences in regioselectivity between cinnamaldehyde and N-formylbenzylimine were traced back to the differences in the ¿-conjugation of both compounds. In contrary, the stereoselectivity of the reaction was controlled by the paracyclophane unit as well as by bulky substituents in the side-chain of the ligand. Based on these findings, a set of modifications for the ligand system were proposed and tested in silico. One of the compounds is expected to be superior to any previous catalysts. An important outcome from this study is the survey of methods used in calculations of reaction barrier heights. It is shown that economic DFT calculations, when extended by empirical dispersion corrections allow for the prediction of stereoselectivities. However, the prediction of the regioselectivities is a much more demanding task and only a consistent treatment of electron correlation can yield qualitative agreement with experimental findings. In this case, the computationally more expensive - but even for large systems still applicable - LPNO-CEPA/1 approach seems to be an efficient and reliable choice.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 138 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemaniabuchversandmimpf2000
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 22,45
Envío por EUR 60,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 1 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Understanding the structure-property relationship of enamel is a basis to improve restorative and preventive dentistry. The structure-mechanical properties relationship of dental enamel (made of apatite fibers and a small amount of orga…nics and water) was studied. Enamel's elastic moduli, elastic/inelastic transition were quantified and the toughening mechanisms were identified for different hierarchical levels. During creep, the interrod regions are able to dissipate higher irreversible energy compared to the enamel rod regions. For enamel fracture, the crack tip toughness, the cohesive stresses and size of the cohesive zone at the crack-tip were quantified.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 130 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemaniabuchversandmimpf2000
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 24,75
Envío por EUR 60,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 1 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Lead zirconate titanate (PZT) based piezoelectric ceramics are currently the most used for manufacturing actuators, sensors, resonators, transducers and other electromechanical devices due to a combination of excellent piezoelectric pro…perties, wider operating temperature range and a variety of other characteristics [1]. The major component for these piezoelectric ceramics which contributes about 60 wt% is the element lead (Pb). It is a soft element which is classified as a heavy metal and is also toxic. It has been used from as far back as the second century B.C in Rome when lead (II)- acetate [(Pb(CH3COO)2] was used for making wine because of its sweet flavor. Its harmful effects have been known for a long time ago because most of the deaths at the time were traced to it. Children are more susceptible to Pb attacks than adults because their central nervous system is more vulnerable. Lead has the ability to attach itself strongly to sulfhydryl group on proteins and distort the enzymes and structural proteins. It can also cleave to the ribophosphate backbone of transfer Ribonucleic acid (tRNA) catalyticallywith no evidence of a threshold and mimics or competes with calcium in the body. Some of the consequences of lead poisoning for children include; behavioral disorders, learning difficulties, low intelligence quotient etc. while hypertension and renal failure are some of the consequences of acute lead poisoning. Some of the sources of exposure to lead include leaded dishware, lead workers, electronics, paints, cosmetics etc. Recent studies indicate that there is no threshold for lead but 10µg/dL is seen to be the acceptable blood levels. The primary way of prevention is the avoidance of contact with leaded materialsCuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 146 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemaniabuchversandmimpf2000
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 25,55
Envío por EUR 60,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 1 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Intensification agriculture on sloping land in northwestern Vietnam has increased soil erosion and declined the soil fertility. In response to this decline in soil fertility, as well high output prices, highland farmers have increasingl…y turned to mineral fertilizers and high yielding varieties, and the rapid adoption of these has partly compensated for the underlying resource degradation process. However, these practices are not environmentally sustainable, and so long-term farm income levels could decline as a result.The objective of this studies is to explore the relationship between the decisions made within farm households and biophysical dynamics - such as soil erosion and soil fertility change, in order to assess how the introduction of soil conservation practices affects soil fertility and farm household incomes, to identify possible constraints on the adoption of soil conservation practices, quantify trade-offs between sustainability and the income of farm households, and to appraise the possible policy options available in order to promote the adoption of soil conservation practices.The studies applied an integrated model using a software package called 'Mathematical Programming-based Multi-Agent Systems' (MP-MAS) in combination processes manipulated using the Tropical Soil Productivity Calculator (TSPC). The model was calibrated to cover a 22.58 km2 catchment area in northwestern Vietnam that included 471 farm households, with each farm represented as an individual agent in the model.The results of the simulation showed that an increased use of mineral fertilizers improved crop yields and reduced soil nutrient losses. When soil conservation practices were included into the decision-making model, the area of land under these techniques remained low. The main constraints to the use of soil conservation practices identified included low crop yields and high labor requirements when compared to conventional practices, that is, those not using soil conservation techniques.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 150 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemaniabuchversandmimpf2000
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 25,79
Envío por EUR 60,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 1 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Centrifugal separation of particles in a suspension is one of the most common problems appearing in industry such as chemical processing, mining and mineral processing, solid-fuel industry, food processing, waste water treatment, pharma…ceutical processes and biotechnology. The separation of the cream in the whole milk to obtain skimmed milk, the isolation of blood components, the purification of beverages, the removal of catalysts in multiphase reactors or the cleaning of waste water and industrial fluids such as lubricants or coolants, are some relevant examples where centrifugal separation is needed. Centrifuges are, together with sedimentation tanks and filters, one of the most commonly employed devices for mechanical solid-liquid separation. Sedimentation uses as its driving force a mass force based on the different densities of the phases. In sedimentation tanks this driving force is gravitational force while in centrifuges it is centrifugal force. Filters, instead, make use of differential pressure as a driving force. The choice of which technique should be applied for a specific separation task depends on the properties of the mixture, the purpose of the separation, whether the thickening of the solid phase or the clarification of the liquid, and the available time and space. The rapid development of the centrifugal technology nowadays allows high efficiencies separating very small particles, even in the nanometre range, from multiphase flows.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 172 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemaniabuchversandmimpf2000
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 26,17
Envío por EUR 60,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 1 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -In Israel, more than half of the national sheep flock is kept by Bedouin in the Negev desert.Extensive production systems co-exist besides semi-intensive systems with varying economicsuccess. There is a constant regional demand for shee…p meat, but the local supply is not ableto cover it. The wide gap between the performance potential of the commonly used andenvironmentally adapted local Awassi and improved sheep breeds suggests an increase ineconomic efficiency by intensification of breeding. The choice of a suitable breed for aspecific system is seen as key factor for the farm success and requires the knowledge of theanimals' adaptation. Information on the performance of Bedouin sheep flocks under the givenharsh production conditions are, however, missing. The purpose of the study was thus acharacterization of current production systems, the assessment of the aggregated performanceof the different Awassi lines kept in those systems and the impact of socio-economic andproduction factors on the efficiency of Bedouin sheep production. Also breeding objectives ofBedouin sheep farmers were investigated. The role of new breeding technologies in theongoing process of intensification of sheep farming systems was analyzed and discussed.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 166 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemaniabuchversandmimpf2000
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 29,07
Envío por EUR 60,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 1 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Dynamic capabilities describe the firms' capacity to adapt their resources with regard to external shifts in order to maintain or to even enlarge competitive advantage. In this essay the author pursues three research objectives regardin…g dynamic capabilities. First, based on a literature review the author states that no appropriate dynamic capability concept exists that enables an empirical investigation of dynamic capabilities across industries, however, argues that such an investigation is possible, and outlines a first step to do so. The second research objective is focused on the value of dynamic capabilities. Using real option knowledge the author is able to outline a simple mathematical model. The results show that the value of a firm is not only given by the expected value, generated by the firm's resources in place, but also by the firm's options to react to environmental changes. Besides other externally given factors - like market development - the application of dynamic capabilities in terms of time has consequences on the expected firm value. The third research objective deals with the basic challenge of ambidextrous firms to achieve an optimal balance of exploitative and explorative activities with regard to market developments. Again, using real option knowledge the author is able to demonstrate that there exist defined points in time until when to maintain, stress, taper off and finally stop exploitative and explorative activities. A further development of the model even enables the prediction of the value maximizing points in time.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 192 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemaniabuchversandmimpf2000
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 30,60
Envío por EUR 60,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 1 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Die Mensch-Maschine-Schnittstellen (HMIs) von Infotainmentsystemen der heutigen Premiumfahrzeuge sind sehr komplexe und eingebettete Systeme. Sie haben im Vergleich mit herkömmlichen PC-Applikationen besondere Eigenschaften, insbesonder…e bezogen auf ihre Variabilität. Die Variabilität von Infotainmentsystem HMIs ergibt sich aus unterschiedlichen Fahrzeugmodellen, Produktserien, Märkten, Ausstattungen, System- sowie Sprachvarianten. Die hohe Anzahl der Varianten führt zu enorm hohem Testaufwand. Modellbasiertes Testen ist ein vielversprechender Ansatz, um den Testaufwand durch die automatische Testfallgenerierung und Testausführung zu reduzieren und gleichzeitig die Testabdeckung zu erhöhen. Während modellbasiertes Testen bereits für Funktionstests häufig eingesetzt wird, bleiben HMI Tests meist noch manuell oder teil-automatisiert. Außerdem kann durch manuelles Testen eine systematische Testabdeckung nur sehr schwierig erreicht werden. Zahlreiche Forschungsarbeiten befassen sich mit dem GUI-Testen. Variabilität ist im Bereich der Software-Produktentwicklung ein immer beliebteres Forschungsthema. Ein modellbasierter Testansatz für komplexe HMIs mit Berücksichtigung der Variabilität ist allerdings immer noch nicht vorhanden.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 190 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemaniabuchversandmimpf2000
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 36,10
Envío por EUR 60,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 1 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Die Einführung von aktiven Sicherheitssystemen, basierend auf Fahrzeug-zu-Fahrzeug Kommunikation, hat ein großes Potential, die immer noch hohe Zahl von Verletzten und tödlich Verunglückten deutlich zu reduzieren. Dabei werden die Fahrz…euge befähigt, regelmäßig und zusätzlich ereignisbasiert ihren Status anderen umliegenden Fahrzeugen mitzuteilen. In diesem Sinne wird die aktive Sicherheit für Fahrer und Insassen erhöht, weil jederzeit zuverlässige, hochaktuelle und sehr genaue Informationen zur Verfügung stehen.Derzeit werden die Protokolle und Mechanismen für die Fahrzeug-zu-Fahrzeug Kommunikation in verschiedenen Gremien standardisiert. In Europa ist hierfür das European Telecommunications Standards Institute (ETSI) zuständig. Für die Applikationsschicht sieht ETSI vor, dass drei verschiedene Nachrichtentypen für den Broadcast zur Verfügung stehen: die periodischen Cooperative Awareness Messages (CAMs), ereignisbasierte Decentralized Environmental Notification Messages (DENMs) und dienstorientierte Service Announcement Messages (SAMs). Insbesondere die Kommunikationslast, die durch die periodischen CAMs entsteht, kann leicht dazu führen, dass der Kommunikationskanal in Überlast gerät. Dabei handelt es sich um das grundsätzlich bekannte Problem der Skalierbarkeit des Medienzugriffs in drahtlosen Netzen, die deutlich mehr als 100 Knoten beinhalten (siehe z.B. 21). 232 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemaniabuchversandmimpf2000
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 37,05
Envío por EUR 60,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 1 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Indonesia is a favourite ecotourism destination in Southeast Asia and tourism in general plays an important role in the Indonesian economy. Being one of the world's largest archipelagos', with more than 17,503 islands sprawling across t…he Indian Ocean, Indonesia is one of the third top global megabiodiversity hotspots with rich natural ecosystems ranging from rainforests to mangrove systems and a high degree of insular endemism. The Indonesian archipelago is divided into two ecological regions - the Sundaland (Asian zoogeographical region) and Wallacea (Australasian zoogeographical region) by the Wallace line. This line runs between the islands Bali and Lombok. Indonesia also boasts of a rich marine biodiversity with 20 % of the world's coral reefs and is biogeographically a part of the coral triangle. Nearly 45 % of Indonesia is still covered by natural ecosystems and one of the reasons for this is that only 6000 out of the 17,000 islands are permanently inhabited. While Sumatra and Java are the most popular tourist destinations, Indonesia also has one of the world's longest coastlines with popular beaches and island resorts in Bali, Lombok and Bintan islands. The waters around these islands also provide excellent and economical diving opportunities, with a very high coral diversity as for example in Bunaken Marine National Park in the northern tip of Sulawesi island and the Raja Ampat area in west Papua which according to Conservation International claims to have the highest marine diversity. Indonesia also has a rich cultural diversity with most of these cultural sites listed as world heritage sites. Ecotourism in Indonesia can be used not only as a tool for conservation of biodiversity but also to promote sustainable development especially for the local communities. While promoting ecotourism, it should also be seen that nature and culture are not harmed or destroyed. The International German Alumni Summer School aimed at addressing the issues of ecotourism potential and development in Indonesia and other countries in South-East Asia on an interdisciplinary platform and find solutions for sustainable and practically applicable nature conservation efforts.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 240 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemaniabuchversandmimpf2000
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 42,75
Envío por EUR 60,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 1 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Caused by a rising mass customisation and the high variety of equipment versions, the flexibility of manufacturing systems in car production has to be increased.In this thesis a skill-based reconfiguration mechanism is presented to enha…nce functional reconfigurability of industrial mobile robots. A novel reconfiguration mechanism allows to react self-organised to functional process changes. The result of this mechanism is the on-line integration of new robot functionalities into the current manufacturing process while maintaining the productivity of the mobile robot.Applied to an industrial mobile robot that is provided by AUDI AG, the suggested mechanism is validated in a real-world environment including the on-line verification of the reconfigured robot functionality in a Validity Check. 282 pp. Englisch.
- Tapa blanda
- Impresión bajo demanda
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, AlemaniaBuchWeltWeit Ludwig Meier e.K.
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 27,45
Envío por EUR 23,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 2 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Auf der Weltklimakonferenz in Cancún (Mexiko) Ende 2010 haben die Vereinten Nationen als Ziel einen maximalen Temperaturanstieg auf der Erdoberfläche von maximal 2 Grad Celsius im Vergleich zu den vorindustriellen Werten festgeschri…eben. Als Beitrag zur Reduzierung der Treibhausgasemissionen soll laut Bundesministerium für Umwelt, Naturschutz und Reaktorsicherheit (BMU) der Anteil der erneuerbaren Energien am Bruttoendenergieverbrauch im Jahr 2020 bei mindestens 18 % liegen und danach stufenweise auf 60 % bis zum Jahr 2050 erhöht werden. Über Stadtwerke oder Bioenergiedörfer können Städte und Gemeinden selbst erneuerbare Energie erzeugen und damit zum geplanten Ausbau der erneuerbaren Energien beitragen. In dieser Arbeit stehen Bioenergiedörfer im Fokus der Untersuchung. Nach einer kurzen Einführung werden in Kapitel zwei die Rahmenbedingungen der Untersuchung in dieser Arbeit beschrieben. Dabei wird das Konzept von Bioenergiedörfern dargestellt, Bioenergie im Kontext der Energieversorgung in Deutschland betrachtet, der Substrateinsatz und Flächenbedarf der Bioenergieerzeugung in Deutschland aufgezeigt und die gesetzlichen Rahmenbedingungen der Bioenergieerzeugung zusammenfassend erläutert. Im dritten Kapitel wird ein lineares gemischt-ganzzahliges Optimierungsproblem für Nahwärmenetze ohne Berücksichtigung der Energieerzeugungsanlage formuliert. In Kapitel vier werden die technischen Grundlagen der Biogasproduktion erläutert, landwirtschaftliche Biogasanlagen näher betrachtet, die Logistik der Biomassebereitstellung untersucht, Kapitalwerte für Biogasanlagen berechnet und dafür eine Sensitivitätsanalyse durchgeführt. Die Kapitalwerte werden auf Basis der Einspeisevergütungen des EEG 2009 und des EEG 2012 und in Abhängigkeit der zur Verfügung stehenden Biomasse berechnet. In Kapitel fünf wird das Optimierungsmodell für Nahwärmenetze um eine Biogasanlage als Energieerzeugungsanlage erweitert. Bei der Anwendung des Modells auf ein Beispieldorf mit 44 Haushalten werden unterschiedliche Anschlussbereitschaften der Dorfbevölkerung an das Nahwärmenetz und unterschiedliche Biomasseangebote der ortsansässigen Landwirte berücksichtigt. In Kapitel sechs werden Schlussfolgerungen für das entwickelte Modell und für Bioenergiedörfer gezogen. In Kapitel sieben wird die Arbeit zusammengefasst. 174 pp. Deutsch.
- Tapa blanda
- Impresión bajo demanda
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemaniabuchversandmimpf2000
Contactar con el vendedorVendedor de 5 estrellasCondición: Nuevo
EUR 48,88
Envío por EUR 60,00Se envía de Alemania a Estados Unidos de AmericaCantidad disponible: 1 disponibles
Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Multiple pharmaceuticals, herbicides, fragrances and flavors manufactured on an industrial scale are known to involve a transition metal-catalyzed reaction in their synthesis.[1] Among these reactions, the most prominent reaction is the… asymmetric hydrogenation catalyzed by a transition metal. The relevance of these products can be noticed by the fact that numerous non-specialists are familiar with their names (e.g. L-DOPA, ibuprofen and vitamin E). The metal-catalyzed hydrogenation is an attractive reaction for asymmetric synthesis, since it combines highly desirable advantages such as perfect atom economy, high conversions, low catalyst loadings and mild reaction conditions.[2] All these characteristics are well appreciated in modern organic synthesis and explain the various applications of metal-catalyzed asymmetric hydrogenation, not only in academic research but also in industrial synthesis. Although this reaction has been explored for many years and an impressive number of enantioselective catalysts have been developed it is still investigated today. The main goals in this field today are to find solutions to render this reaction more universal, meaning applicable to a wider range of substrates, or to discover more generally applicable, effective, inexpensive and readily available catalysts.Cuvillier Verlag, Nonnenstieg 8, 37075 Göttingen 342 pp. Englisch.
