Idioma: Inglés
Publicado por LAP LAMBERT Academic Publishing Jan 2020, 2020
ISBN 10: 6200502331 ISBN 13: 9786200502339
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, Alemania
EUR 39,90
Cantidad disponible: 1 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. Neuware -Now a days electricity is most needed facility for the human being. All the conventional energy resources are depleting day by day. So we have to shift from conventional to non-conventional energy resources. In this the combination of two energy resources is takes place i.e. wind and solar energy. This process reviles the sustainable energy resources without damaging the nature. We can give uninter- rupted power by using hybrid energy system. Basically this system involves the integration of two energy system that will give continuous power. Solar panels are used for converting solar energy and wind turbines are used for converting wind energy into electricity. This electrical power can utilize for various purpose. Generation of electricity will be takes place at affordable cost. This project deals with the generation of electricity by using two sources combine which leads to generate electricity with affordable cost without damaging the nature balance. 68 pp. Englisch.
Idioma: Inglés
Publicado por LAP LAMBERT Academic Publishing, 2020
ISBN 10: 6200502331 ISBN 13: 9786200502339
Librería: moluna, Greven, Alemania
EUR 34,25
Cantidad disponible: Más de 20 disponibles
Añadir al carritoCondición: New.
Idioma: Inglés
Publicado por LAP LAMBERT Academic Publishing Mai 2021, 2021
ISBN 10: 6203855197 ISBN 13: 9786203855197
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemania
EUR 39,90
Cantidad disponible: 2 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. Neuware -Most brakes commonly use friction between two surfaces pressed together to convert the kinetic energy of the moving object into heat, though other methods of energy conversion may be employed as all the energy here is being distributed in the form of heat. Regenerative braking converts much of the energy to electrical energy, which may be stored for later use. Driving an automobile involves many braking events, due to which higher energy losses takes place, with greater potential savings. With buses, taxis, delivery vans and so on there is even more potential for economy. As we know that the regenerative braking, the efficiency is improved as it results in an increase in energy output for a given energy input to a vehicle. The amount of work done by the engine of the vehicle is reduced, in turn reducing the amount of energy required to drive the vehicle. The objective of our project is to study this new type of braking system that can recollect much of the cars kinetic energy and convert it into electrical energy or mechanical energy. We are also going to make a working model of regenerative braking to illustrate the process of conversion of energy from one form to another.Books on Demand GmbH, Überseering 33, 22297 Hamburg 60 pp. Englisch.
Idioma: Inglés
Publicado por LAP LAMBERT Academic Publishing, 2020
ISBN 10: 6200502331 ISBN 13: 9786200502339
Librería: preigu, Osnabrück, Alemania
EUR 35,60
Cantidad disponible: 5 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. Design and Implementation of IoT based Smart City | This project deals with the generation of electricity by using two sources combine which leads to generate electricity | Sattyendrasing Seragi | Taschenbuch | 68 S. | Englisch | 2020 | LAP LAMBERT Academic Publishing | EAN 9786200502339 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.
Idioma: Español
Publicado por Ediciones Nuestro Conocimiento, 2021
ISBN 10: 6204266004 ISBN 13: 9786204266008
Librería: moluna, Greven, Alemania
EUR 34,25
Cantidad disponible: Más de 20 disponibles
Añadir al carritoCondición: New.
Idioma: Inglés
Publicado por LAP LAMBERT Academic Publishing, 2016
ISBN 10: 3659876992 ISBN 13: 9783659876998
Librería: Revaluation Books, Exeter, Reino Unido
EUR 108,48
Cantidad disponible: 1 disponibles
Añadir al carritoPaperback. Condición: Brand New. 164 pages. 8.66x5.91x0.37 inches. In Stock.
Idioma: Inglés
Publicado por LAP LAMBERT Academic Publishing, 2020
ISBN 10: 6200502331 ISBN 13: 9786200502339
Librería: Buchpark, Trebbin, Alemania
EUR 18,97
Cantidad disponible: 1 disponibles
Añadir al carritoCondición: Hervorragend. Zustand: Hervorragend | Sprache: Englisch | Produktart: Bücher | Now a days electricity is most needed facility for the human being. All the conventional energy resources are depleting day by day. So we have to shift from conventional to non-conventional energy resources. In this the combination of two energy resources is takes place i.e. wind and solar energy. This process reviles the sustainable energy resources without damaging the nature. We can give uninter- rupted power by using hybrid energy system. Basically this system involves the integration of two energy system that will give continuous power. Solar panels are used for converting solar energy and wind turbines are used for converting wind energy into electricity. This electrical power can utilize for various purpose. Generation of electricity will be takes place at affordable cost. This project deals with the generation of electricity by using two sources combine which leads to generate electricity with affordable cost without damaging the nature balance.
Idioma: Inglés
Publicado por LAP LAMBERT Academic Publishing, 2016
ISBN 10: 3659876992 ISBN 13: 9783659876998
Librería: preigu, Osnabrück, Alemania
EUR 54,90
Cantidad disponible: 5 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. Arm-7 based single phase Z-source inverter for motor drive | Sattyendrasing Seragi (u. a.) | Taschenbuch | 164 S. | Englisch | 2016 | LAP LAMBERT Academic Publishing | EAN 9783659876998 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.
Idioma: Español
Publicado por Ediciones Nuestro Conocimiento, 2021
ISBN 10: 6204266004 ISBN 13: 9786204266008
Librería: preigu, Osnabrück, Alemania
EUR 35,60
Cantidad disponible: 5 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. Reutilización de la energía en el vehículo eléctrico | aumentar la eficiencia | Sattyendrasing Akashsing Seragi (u. a.) | Taschenbuch | Spanisch | 2021 | Ediciones Nuestro Conocimiento | EAN 9786204266008 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.
Idioma: Inglés
Publicado por LAP LAMBERT Academic Publishing, 2016
ISBN 10: 3659876992 ISBN 13: 9783659876998
Librería: Mispah books, Redhill, SURRE, Reino Unido
EUR 184,63
Cantidad disponible: 1 disponibles
Añadir al carritopaperback. Condición: New. NEW. SHIPS FROM MULTIPLE LOCATIONS. book.
Idioma: Francés
Publicado por Editions Notre Savoir, 2021
ISBN 10: 6204266012 ISBN 13: 9786204266015
Librería: moluna, Greven, Alemania
EUR 34,25
Cantidad disponible: Más de 20 disponibles
Añadir al carritoCondición: New.
Idioma: Francés
Publicado por Editions Notre Savoir, 2021
ISBN 10: 6204266012 ISBN 13: 9786204266015
Librería: preigu, Osnabrück, Alemania
EUR 35,60
Cantidad disponible: 5 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. Réutilisation de l'énergie dans le véhicule électrique | plus d'efficacité | Sattyendrasing Akashsing Seragi (u. a.) | Taschenbuch | Französisch | 2021 | Editions Notre Savoir | EAN 9786204266015 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.
Idioma: Portugués
Publicado por Edicoes Nosso Conhecimento, 2021
ISBN 10: 6204266039 ISBN 13: 9786204266039
Librería: moluna, Greven, Alemania
EUR 34,25
Cantidad disponible: Más de 20 disponibles
Añadir al carritoCondición: New.
EUR 34,25
Cantidad disponible: Más de 20 disponibles
Añadir al carritoCondición: New.
Idioma: Italiano
Publicado por Edizioni Sapienza Nov 2021, 2021
ISBN 10: 6204266020 ISBN 13: 9786204266022
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemania
EUR 39,90
Cantidad disponible: 2 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. Neuware -La maggior parte dei freni utilizza comunemente l'attrito tra due superfici premute insieme per convertire l'energia cinetica dell'oggetto in movimento in calore, anche se possono essere impiegati altri metodi di conversione dell'energia, dato che tutta l'energia qui viene distribuita sotto forma di calore. La frenata rigenerativa converte gran parte dell'energia in energia elettrica, che può essere immagazzinata per un uso successivo. La guida di un'automobile comporta molti eventi di frenata, a causa dei quali si verificano maggiori perdite di energia, con un maggiore risparmio potenziale. Con gli autobus, i taxi, i furgoni per le consegne e così via c'è ancora più potenziale di risparmio. Come sappiamo che la frenata rigenerativa, l'efficienza è migliorata in quanto si traduce in un aumento della produzione di energia per un dato input di energia in un veicolo. La quantità di lavoro svolto dal motore del veicolo è ridotta, riducendo a sua volta la quantità di energia necessaria per guidare il veicolo. L'obiettivo del nostro progetto è quello di studiare questo nuovo tipo di sistema di frenata che può recuperare gran parte dell'energia cinetica dell'auto e convertirla in energia elettrica o meccanica. Faremo anche un modello funzionante di frenata rigenerativa per illustrare il processo di conversione dell'energia da una forma all'altra.Books on Demand GmbH, Überseering 33, 22297 Hamburg 56 pp. Italienisch.
Idioma: Portugués
Publicado por Edições Nosso Conhecimento Nov 2021, 2021
ISBN 10: 6204266039 ISBN 13: 9786204266039
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemania
EUR 39,90
Cantidad disponible: 2 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. Neuware -A maioria dos travões usa normalmente fricção entre duas superfícies pressionadas juntas para converter a energia cinética do objecto em movimento em calor, embora outros métodos de conversão de energia possam ser utilizados, uma vez que toda a energia aqui está a ser distribuída sob a forma de calor. A frenagem regenerativa converte grande parte da energia em energia elétrica, que pode ser armazenada para uso posterior. A condução de um automóvel envolve muitos eventos de travagem, devido aos quais ocorrem maiores perdas de energia, com maior potencial de poupança. Com autocarros, táxis, carrinhas de entregas, etc., há ainda mais potencial de economia. Como sabemos que a frenagem regenerativa melhora a eficiência, pois resulta em um aumento na produção de energia para uma determinada entrada de energia em um veículo. A quantidade de trabalho realizado pelo motor do veículo é reduzida, reduzindo por sua vez a quantidade de energia necessária para conduzir o veículo. O objectivo do nosso projecto é estudar este novo tipo de sistema de travagem que pode recolher grande parte da energia cinética dos automóveis e convertê-la em energia eléctrica ou energia mecânica. Também vamos fazer um modelo de frenagem regenerativa em funcionamento para ilustrar o processo de conversão de energia de uma forma para outra.Books on Demand GmbH, Überseering 33, 22297 Hamburg 56 pp. Portugiesisch.
Publicado por Editions Notre Savoir, 2021
ISBN 10: 6204266012 ISBN 13: 9786204266015
Librería: Mispah books, Redhill, SURRE, Reino Unido
EUR 140,84
Cantidad disponible: 1 disponibles
Añadir al carritopaperback. Condición: New. NEW. SHIPS FROM MULTIPLE LOCATIONS. book.
Idioma: Portugués
Publicado por Edições Nosso Conhecimento, 2021
ISBN 10: 6204266039 ISBN 13: 9786204266039
Librería: preigu, Osnabrück, Alemania
EUR 36,25
Cantidad disponible: 5 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. Reutilização de energia em veículo elétrico | maior eficiência | Sattyendrasing Akashsing Seragi (u. a.) | Taschenbuch | Portugiesisch | 2021 | Edições Nosso Conhecimento | EAN 9786204266039 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.
Librería: preigu, Osnabrück, Alemania
EUR 36,25
Cantidad disponible: 5 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. Riutilizzo dell'energia nel veicolo elettrico per | maggiore efficienza | Sattyendrasing Akashsing Seragi (u. a.) | Taschenbuch | Italienisch | 2021 | Edizioni Sapienza | EAN 9786204266022 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.
EUR 39,90
Cantidad disponible: 5 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. Energiewiederverwendung in Elektrofahrzeugen | mehr Effizienz | Sattyendrasing Akashsing Seragi (u. a.) | Taschenbuch | 60 S. | Deutsch | 2021 | Verlag Unser Wissen | EAN 9786204265995 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.
Librería: Mispah books, Redhill, SURRE, Reino Unido
EUR 140,84
Cantidad disponible: 1 disponibles
Añadir al carritopaperback. Condición: New. NEW. SHIPS FROM MULTIPLE LOCATIONS. book.
Idioma: Inglés
Publicado por LAP LAMBERT Academic Publishing Mai 2021, 2021
ISBN 10: 6203855197 ISBN 13: 9786203855197
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, Alemania
EUR 39,90
Cantidad disponible: 2 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Most brakes commonly use friction between two surfaces pressed together to convert the kinetic energy of the moving object into heat, though other methods of energy conversion may be employed as all the energy here is being distributed in the form of heat. Regenerative braking converts much of the energy to electrical energy, which may be stored for later use. Driving an automobile involves many braking events, due to which higher energy losses takes place, with greater potential savings. With buses, taxis, delivery vans and so on there is even more potential for economy. As we know that the regenerative braking, the efficiency is improved as it results in an increase in energy output for a given energy input to a vehicle. The amount of work done by the engine of the vehicle is reduced, in turn reducing the amount of energy required to drive the vehicle. The objective of our project is to study this new type of braking system that can recollect much of the cars kinetic energy and convert it into electrical energy or mechanical energy. We are also going to make a working model of regenerative braking to illustrate the process of conversion of energy from one form to another. 60 pp. Englisch.
Idioma: Español
Publicado por Ediciones Nuestro Conocimiento Nov 2021, 2021
ISBN 10: 6204266004 ISBN 13: 9786204266008
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, Alemania
EUR 39,90
Cantidad disponible: 2 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -La mayoría de los frenos suelen utilizar la fricción entre dos superficies presionadas para convertir la energía cinética del objeto en movimiento en calor, aunque pueden emplearse otros métodos de conversión de energía, ya que toda la energía se distribuye en forma de calor. El frenado regenerativo convierte gran parte de la energía en energía eléctrica, que puede almacenarse para su uso posterior. La conducción de un automóvil implica muchas frenadas, por lo que se producen mayores pérdidas de energía, con un mayor potencial de ahorro. En el caso de los autobuses, los taxis, las furgonetas de reparto, etc., el potencial de ahorro es aún mayor. Como sabemos, con el frenado regenerativo se mejora la eficiencia, ya que se produce un aumento de la producción de energía para una entrada de energía determinada en un vehículo. La cantidad de trabajo realizado por el motor del vehículo se reduce, reduciendo a su vez la cantidad de energía necesaria para conducir el vehículo. El objetivo de nuestro proyecto es estudiar este nuevo tipo de sistema de frenado que puede recoger gran parte de la energía cinética del coche y convertirla en energía eléctrica o mecánica. También vamos a hacer un modelo de funcionamiento de frenado regenerativo para ilustrar el proceso de conversión de energía de una forma a otra. 60 pp. Spanisch.
Idioma: Inglés
Publicado por LAP LAMBERT Academic Publishing, 2021
ISBN 10: 6203855197 ISBN 13: 9786203855197
Librería: moluna, Greven, Alemania
EUR 34,25
Cantidad disponible: Más de 20 disponibles
Añadir al carritoCondición: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Seragi Sattyendrasing AkashsingMr. Sattyendrasing Akashsing Seragi is Presently working as assistant professor in R.C.Patel Institute of Technology, Shirpur, Dist: Dhule, MaharashtraMost brakes commonly use friction between two s.
Idioma: Inglés
Publicado por LAP Lambert Academic Publishing Okt 2016, 2016
ISBN 10: 3659876992 ISBN 13: 9783659876998
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, Alemania
EUR 64,90
Cantidad disponible: 2 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Z source inverter is used to overcome the problems in the traditional source inverters. It employs a unique impedance network coupled with the inverter main circuit to the power source. It consists of voltage source from the rectifier supply, impedance network, single phase inverter and single phase induction motor. The ac voltage is rectified to dc voltage by the rectifier. The rectifier output dc voltage fed to the impedance network, which consist of two equal inductors and two equal capacitors. The network inductors are connected in series arms and capacitors are connected in diagonal arms. The impedance network is used to buck or boost the input voltage depend boosting factor. This network also act as a second order filter and it should required less inductance and less capacitance. The inverter main circuit consists of four switches. These inverters use a unique impedance network, coupled between the power source and converter circuit, to provide both voltage buck and boost properties, which cannot be achieved with conventional voltage source and current source inverters. 164 pp. Englisch.
Idioma: Inglés
Publicado por LAP LAMBERT Academic Publishing, 2018
ISBN 10: 6139586755 ISBN 13: 9786139586752
Librería: moluna, Greven, Alemania
EUR 41,71
Cantidad disponible: Más de 20 disponibles
Añadir al carritoCondición: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Mahire AmitAmit Rajendra Mahire working as Assistant professor in R.C.Patel Institute of Technology Shirpur, Dist: DhuleWavelength division multiplexing (WDM) is a new technology for migrating the core optical transmission networ.
Idioma: Francés
Publicado por Editions Notre Savoir Nov 2021, 2021
ISBN 10: 6204266012 ISBN 13: 9786204266015
Librería: BuchWeltWeit Ludwig Meier e.K., Bergisch Gladbach, Alemania
EUR 39,90
Cantidad disponible: 2 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -La plupart des freins utilisent généralement le frottement entre deux surfaces pressées l'une contre l'autre pour convertir l'énergie cinétique de l'objet en mouvement en chaleur, bien que d'autres méthodes de conversion d'énergie puissent être employées puisque toute l'énergie est ici distribuée sous forme de chaleur. Le freinage par récupération convertit une grande partie de l'énergie en énergie électrique, qui peut être stockée pour une utilisation ultérieure. La conduite d'une automobile implique de nombreux freinages, ce qui entraîne des pertes d'énergie plus importantes, avec des économies potentielles plus importantes. Avec les bus, les taxis, les camionnettes de livraison, etc., le potentiel d'économie est encore plus important. Comme nous le savons, le freinage par récupération permet d'améliorer l'efficacité car il se traduit par une augmentation de la production d'énergie pour une entrée d'énergie donnée dans un véhicule. La quantité de travail effectuée par le moteur du véhicule est réduite, ce qui réduit la quantité d'énergie nécessaire pour conduire le véhicule. L'objectif de notre projet est d'étudier ce nouveau type de système de freinage qui peut récupérer une grande partie de l'énergie cinétique de la voiture et la convertir en énergie électrique ou mécanique. Nous allons également réaliser un modèle fonctionnel de freinage par récupération pour illustrer le processus de conversion de l'énergie d'une forme à une autre. 60 pp. Französisch.
Idioma: Inglés
Publicado por LAP LAMBERT Academic Publishing, 2021
ISBN 10: 6203855197 ISBN 13: 9786203855197
Librería: AHA-BUCH GmbH, Einbeck, Alemania
EUR 40,89
Cantidad disponible: 1 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Most brakes commonly use friction between two surfaces pressed together to convert the kinetic energy of the moving object into heat, though other methods of energy conversion may be employed as all the energy here is being distributed in the form of heat. Regenerative braking converts much of the energy to electrical energy, which may be stored for later use. Driving an automobile involves many braking events, due to which higher energy losses takes place, with greater potential savings. With buses, taxis, delivery vans and so on there is even more potential for economy. As we know that the regenerative braking, the efficiency is improved as it results in an increase in energy output for a given energy input to a vehicle. The amount of work done by the engine of the vehicle is reduced, in turn reducing the amount of energy required to drive the vehicle. The objective of our project is to study this new type of braking system that can recollect much of the cars kinetic energy and convert it into electrical energy or mechanical energy. We are also going to make a working model of regenerative braking to illustrate the process of conversion of energy from one form to another.
Idioma: Inglés
Publicado por LAP LAMBERT Academic Publishing, 2020
ISBN 10: 6200502331 ISBN 13: 9786200502339
Librería: AHA-BUCH GmbH, Einbeck, Alemania
EUR 40,89
Cantidad disponible: 1 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Now a days electricity is most needed facility for the human being. All the conventional energy resources are depleting day by day. So we have to shift from conventional to non-conventional energy resources. In this the combination of two energy resources is takes place i.e. wind and solar energy. This process reviles the sustainable energy resources without damaging the nature. We can give uninter- rupted power by using hybrid energy system. Basically this system involves the integration of two energy system that will give continuous power. Solar panels are used for converting solar energy and wind turbines are used for converting wind energy into electricity. This electrical power can utilize for various purpose. Generation of electricity will be takes place at affordable cost. This project deals with the generation of electricity by using two sources combine which leads to generate electricity with affordable cost without damaging the nature balance.
Idioma: Inglés
Publicado por LAP LAMBERT Academic Publishing Jan 2020, 2020
ISBN 10: 6200502331 ISBN 13: 9786200502339
Librería: buchversandmimpf2000, Emtmannsberg, BAYE, Alemania
EUR 39,90
Cantidad disponible: 1 disponibles
Añadir al carritoTaschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Now a days electricity is most needed facility for the human being. All the conventional energy resources are depleting day by day. So we have to shift from conventional to non-conventional energy resources. In this the combination of two energy resources is takes place i.e. wind and solar energy. This process reviles the sustainable energy resources without damaging the nature. We can give uninter- rupted power by using hybrid energy system. Basically this system involves the integration of two energy system that will give continuous power. Solar panels are used for converting solar energy and wind turbines are used for converting wind energy into electricity. This electrical power can utilize for various purpose. Generation of electricity will be takes place at affordable cost. This project deals with the generation of electricity by using two sources combine which leads to generate electricity with affordable cost without damaging the nature balance.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 68 pp. Englisch.