springer springer jun 1973 (59 resultados)

Buch. Condición: Neu. Neuware - Although biological exploration in Surinam started about 300 years ago, a thorough account of the Surinam herpetofauna has not hitherto been publish ed. Several publications on the subject have been issued (see below), but none of them was comprehensive. However, there are several papers dealing with a part of the Surinam lizards. The main reason for the absence of a complete review of the Surinam lizards (and, for that matter, of the entire herpeto fauna) has been the scarcity of the material available in museum collection although some of the more common species reached museums in considerable numbers. Until about 1900 the interior of Surinam was virtually terra incognita and most collecting took place in a restricted, cultivated area along the coast and the farthest inland point reached was Berg en Dal on the Suriname River. From 1900 exploration of the interior was actively encouraged by the Dutch Government, and under the auspices of the Koninklijk Nederlandsch Aard rijkskundig Genootschap several geographical expeditions explored the main river systems. Although the main purpose of these expeditions was to map the visited areas, usually the physician accompanying the expedition was entrusted also with the collecting of zoological and botanical specimens. Interesting ma terial from the interior started to reach the Dutch museums in ever increasing numbers after the late nineteen thirties when Dr. D. C. GEIJSKES arrived in Su rinam. The Surinam Expedition 1948-49 in which Dr. GElJSKES and Mr. P. H.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -h-Divisible and cotorsion modules.- Completions.- Compatible extensions.- Localizations.- Artinian divisible modules.- Strongly unramified ring extensions.- The closed components of R.- Simple divisible modules.- Semi-simple and uniserial divisible modules.- The integral closure.- The primary decomposition.- The first neighborhood ring.- Gorenstein rings.- Multiplicities.- The canonical ideal of R. 176 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Les espaces de M(P)-ultradistributions.- Sur le module minimum des fonctions analytiques complexes.- L¿inversibilite.- La regularite interieure.- Operateur hyperbolique. 152 pp. Französisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Lyapunov methods and equations of parabolic type.- Multiple solutions of nonlinear partial differential equations.- Fading memory and functional-differential equations.- Singular perturbation by a quasilinear operator.- Remarks on branching from multiple eigenvalues.- Asymptotic analysis of a class of nonlinear integral equations.- Remarks about bifurcation and stability of quasi-periodic solutions which bifurcate from periodic solutions of the Navier Stokes equations.- Bifurcation of periodic solutions into invariant tori: The work of Ruelle and Takens.- Ergodic theory and statistical mechanics of non-equilibrium processes.- Mathematical problems in theoretical biology.- On predator-prey equations simulating an immune response.- Bifurcation theory for gradient systems.- Six lectures on the transition to instability.- Groundwater flow as a singular perturbation problem and remarks about numerical methods.- Nonlinear problems in nuclear reactor analysis.- Some non-linear problems in statistical mechanics and biology.- Stability properties and periodic behavior of controlled biochemical systems. 372 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 60 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 84 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 88 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 192 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -does not vary more than 1 % over the whole surface. Stimulus: The luminance of the stimuli can be regulated by means of neutral density filters. These filters are neither entirely neutral nor completely uniform, but these variations are not significant for perimetry. The maximum luminance of the stimuli is standardized at 1000 asb (316 2 cd.m-). The standard GP for kinetic perimetry has 3 neutral density filters which reduce the luminance by 0.5, 1.0 and 1.5 log units respectively. The modification of the GP for static perimetry is supplied with an additional series of four neutral density filters, which allow luminance steps of 0.1, 0.2, 0.3 and 0.4 log units. The resulting luminance values, expressed in apostilb, are given in Table I. TABLE I Luminance values of the Goldmann perimeter 4 3 2 steps lux 1430 450 143 45 3,1 asb 1000 315 100 31,5 3,1 2 cd/m 315 100 31,5 10 3,1 ßL ±30 10 3 3,1 L log L asb 3 2,5 2 2 1,5 0,5 2 Background: 31,5 asb. = 10 cd/m - Coefficient of reflection 0,7. 1 2 (1 asb = -cd/m). 372 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 164 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 96 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 60 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The 1973 - postgraduate courses in ophthalmology held under the auspices of the Netherlands Ophthalmological Society, mark the 25th anniversary of the rebuilt Rotterdam Eye Clinic. The themes set for these courses: 'Ophthalmic Photography', 'Electro ophthalmology' and 'Echo-ophthalmology', have been chosen from a multitude of rapid developments in ophthalmology during this period. The aim was to provide the clinician with a lead in a bewildering field of apparatus and techniques and to help him in selecting methods that provide useful results without too much specialised knowledge. However, sophisticated techniques and discussion of results have been added now and then, so that the more advanced reader still finds sufficiently inter esting material in this report. This holds e.g. for the section on fluorescence-angiography which section has been extended on the base of the probability that the clinician in general practice too, has been or will be confronted with this rapidly expanding and fascinating field. The reason to bring together two methods of objective examination of visual functions i.e. electro-ophthalmology and echo-ophthalmology, is clearly due to the intimate connection between the two. In many ways these methods complement each other in providing the final diagnosis. This report does not intend to replace text books, nor to outdate treatises on superspecialised ophthalmic subjects; it simply tends to provide the clinician with a basic information on selected techniques, stimulating the reader to start using them in daily practice. 328 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The mechanism of blood coagulation.- Postjunctional supersensitivity and subsensitivity of excitable tissues to drugs.- The cell surface in cell interactions. 200 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -I: A Selected Review of the Literature.- The Controversy over Pigou's Increasing Cost Theorem.- Between Controversies.- The Controversy over Coase's Neutrality Theorem: the Case for Coase.- The Pigovian Revival: the Case against Coase.- Recent Developments.- Summary and Prelude.- II: A Theory of Involuntary Transfers.- Three Kinds of Jointness.- Defensive Strategies.- Formal Model.- General Case.- III: Air Pollution in London, an Exemplary Involuntary Transfer.- Setting of the Model.- The Naive Model.- Non-linearities and Lag Structure.- Conclusions and Further Research.- List of Symbols. 180 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware 48 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Two groups of volunteers having no eye disease were examined electro-oculo graphically twice at ten minute intervals. One group smoked in the break, one didn't. In the non-smoking group there are a number of significant correlations between the tested parameters in the dark-period and in the light-period, which could not be found to the same degree in the smoking group. The fact that there were differences between the two groups-even though not interpretable systematicaIly-suggests, that smoking influences physiological processes in the EOG. In the second period of the test, a parallelism in the course of EOG and EEG was observed, the EEG-changes, however, are interpreted more psychologically than pharmacologicaIly. REFERENCES HAASE, E. & MUELLER, W. Meßbare Beeinflussung des EOG durch Zigarettenrauchen1 Klin. Mbl. Augenhk. Bd. 158:677 (1971). HAGER, H. Thrombangiitis obliterans und Auge. Klin. Mbl. Augenhk. Bd. 114:238 (1949). HAUSER, H., SCHWARZE, B. E., ROTH, G. & BICKFORD, R. G. Electroencephalographic changes related to smoking. EEG clin. Neurophysiol. Vol. 10:576P (1958). HEIMBÖCK. Wien. klin. Wschr. Bd. 73:529 (1961). HOLLWICH, F., JÜNEMANN, G. & DAMASKE, E. Auge. In: Nikotin. Edited by Schievelbein. H. Georg Thieme Verlag, Stuttgart (1968). HOMER, L. D. & KOLDER, H. Mathematical model of oscillations in human corneo-retinal potential. Pflügers Arch. ges. Physiol. 287 :197 (1966). KOLDER H. Spontane und experimentelle Änderungen des Bestandpotentials des menschlichen Auges. P{lügerrs Arch. ges. Physiol. 268:258 (1959). KOLDER, H. E. & HOCHGESAND, P. Empirical Model of Electro-Oculogram. Doc. Ophtha! (1972) in press. 300 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The purpose of this symposium on light-coagulation is not to show the superi ority of the argon-laser-coagulation or, on the contrary, of the classical photo coagulation, but rather to see, if possible, which are the respective indications and contraindications for xenon-are-coagulation as well as for argon-laser coagulation. So, for instance, the argon-Iaser-coagulator is perhaps more appropriate to treat the lesions at and around the macula and the optic disc, but for the peripheral lesions of the retina the xenon-arc photocoagulator is surely as effective. For the conservative treatment of intraocular tumours, the xenon arc-coagula tor is beyond doubt more efficacious than the argon-Iaser-coagu lator. We were very happy to have at this symposium Professor MEYER-SCHWICKE RATH, the creator and the pioneer of light-coagulation, his coworker, Professor WESSING, and Doctor HUNTER LITTLE, one of the pioneers of the laser-therapy. We thank them very warmly for having brought to us the results of their promi nent clinical experiments. After general considerations on laser-photocoagulation, we will have a discussion on macular alterations and their treatment as well as on peripheral retinal vascular or non vascular diseases. The most important part concerns the treatment of diabetic retinopathy. Finally the prevention of complications in argon laser retinal photocoagulation will be reviewed. 108 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -h-Divisible and cotorsion modules.- Completions.- Compatible extensions.- Localizations.- Artinian divisible modules.- Strongly unramified ring extensions.- The closed components of R.- Simple divisible modules.- Semi-simple and uniserial divisible modules.- The integral closure.- The primary decomposition.- The first neighborhood ring.- Gorenstein rings.- Multiplicities.- The canonical ideal of R.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 176 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Lyapunov methods and equations of parabolic type.- Multiple solutions of nonlinear partial differential equations.- Fading memory and functional-differential equations.- Singular perturbation by a quasilinear operator.- Remarks on branching from multiple eigenvalues.- Asymptotic analysis of a class of nonlinear integral equations.- Remarks about bifurcation and stability of quasi-periodic solutions which bifurcate from periodic solutions of the Navier Stokes equations.- Bifurcation of periodic solutions into invariant tori: The work of Ruelle and Takens.- Ergodic theory and statistical mechanics of non-equilibrium processes.- Mathematical problems in theoretical biology.- On predator-prey equations simulating an immune response.- Bifurcation theory for gradient systems.- Six lectures on the transition to instability.- Groundwater flow as a singular perturbation problem and remarks about numerical methods.- Nonlinear problems in nuclear reactor analysis.- Some non-linear problems in statistical mechanics and biology.- Stability properties and periodic behavior of controlled biochemical systems.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 372 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -To mathematicians, mathematics is a happy game, to scientists a mere tool and to philosophers a Platonic mystery - or so the caricature runs. The caricature reflects the alleged 'cultural gap' between the disciplines a gap for which there too often has been, sadly, sound historical evidence. In many minds the lack of communication between philosophy and the exact disciplines is especially prominent. Yet in the past there was no separation - exact knowledge, covering both scientists and mathemati cians, was known as natural philosophy and the business of providing a critical view of the nature of reality and an accurate mathematical de scription of it constituted a single task from the glorious tradition begun by the early Greek philosophers even up until Newton's day (but I am thinking of Descartes and Leibniz I). The lack of communication between these professional groups has been particularly unfortunate, for the past half century has seen the most ex citing developments in mathematical physics since Newton. These devel opments hinged on the introduction of vast new reaches of mathematics into physics (non-Euclidean geometries, covariant formulations, non commutative algebras, functional analysis and so on) and conversely have challenged mathematicians to develop the appropriate mathematical fields. Equally, these developments have posed profound philosophical problems to do with the rejection of traditional conceptions concerning the nature of physical reality and physical theorising. 408 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The coming of the computer age to organic chemistry: Recent approaches to systematic synthesis analysis.- An algebraic model of constitutional chemistry as a basis for chemical computer programs.- Computer techniques for retrieval of information from the chemical literature.- Identification of organic compounds by computer-aided interpretation of spectra.- Mass spectra and computers.- Computer-gas chromatography.- Computer-assisted instruction in chemistry. 208 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -I: A Selected Review of the Literature.- The Controversy over Pigou's Increasing Cost Theorem.- Between Controversies.- The Controversy over Coase's Neutrality Theorem: the Case for Coase.- The Pigovian Revival: the Case against Coase.- Recent Developments.- Summary and Prelude.- II: A Theory of Involuntary Transfers.- Three Kinds of Jointness.- Defensive Strategies.- Formal Model.- General Case.- III: Air Pollution in London, an Exemplary Involuntary Transfer.- Setting of the Model.- The Naive Model.- Non-linearities and Lag Structure.- Conclusions and Further Research.- List of Symbols.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 180 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 192 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -Introductory remarks.- Visual electrophysiology of myotonia congenita.- ERG and EOG in diabetics pre and post photocoagulation.- Electrophysiological studies in patients with arterio-venous communications of the retina.- Electrophysiological aspects in retinal venous thrombosis.- Tolerance of mammalian retina to circulatory arrest.- The ERG and its correlation with damage caused by chronic exposure to light.- The supernormal EOG: evidence of light-induced retinal damage .- Electroretinogram and ophthalmoscopic findings in intra-vitreous iron, copper and lead particles.- The appearance of rhythmic wavelets on the ERG of alpha-chymotrypsin poisoned mammalian retinas.- Electrophysiological and histopathological studies on the rabbit retina treated with sodium iodate and sodium l-glutamate.- Effect of alcohol-dehydrogenase activators on mouse ERG.- Is the EOG influenced by nicotine Relations to the EEG.- Localization studies of the human visual evoked response.- Computer processing of the visually evoked response.- Psychophysics and electro-physiology of a rod-achromat.- General cone dysfunction without achromatopsia.- Boolean notation for ocular electrophysiology (ERG and VER) and dioptric factors.- On the spectral sensitivity of oscillatory potentials.- Human scotopic fast retinal potentials (FRP'S).- Luminance responses to pattern reversal.- Electrophysiological equipment for total and local retinal stimulation.- Slow potentials of ERG in hemeralopia congenita.- Electrophysiological examinations in a family Ah with autosomal dominant retinitis pigmentosa.- Sectoral retinopathia pigmentosa. Involvement of the retina and pigment epithelium as reflected in bioelectric response.- Electroperimetry.- Electroretinotopography (ERTG).- The perfused mammalian eye as apreparation for electrophysiological studies.- Scotopic spectral sensitivity and the absorbance of visual pigments in isolated visual cells and in the intact retina.- Analysis of the visual response of the fly sarcophaga bullata during pupal development.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 300 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The purpose of this symposium on light-coagulation is not to show the superi ority of the argon-laser-coagulation or, on the contrary, of the classical photo coagulation, but rather to see, if possible, which are the respective indications and contraindications for xenon-are-coagulation as well as for argon-laser coagulation. So, for instance, the argon-Iaser-coagulator is perhaps more appropriate to treat the lesions at and around the macula and the optic disc, but for the peripheral lesions of the retina the xenon-arc photocoagulator is surely as effective. For the conservative treatment of intraocular tumours, the xenon arc-coagula tor is beyond doubt more efficacious than the argon-Iaser-coagu lator. We were very happy to have at this symposium Professor MEYER-SCHWICKE RATH, the creator and the pioneer of light-coagulation, his coworker, Professor WESSING, and Doctor HUNTER LITTLE, one of the pioneers of the laser-therapy. We thank them very warmly for having brought to us the results of their promi nent clinical experiments. After general considerations on laser-photocoagulation, we will have a discussion on macular alterations and their treatment as well as on peripheral retinal vascular or non vascular diseases. The most important part concerns the treatment of diabetic retinopathy. Finally the prevention of complications in argon laser retinal photocoagulation will be reviewed.Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 108 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The coming of the computer age to organic chemistry: Recent approaches to systematic synthesis analysis.- An algebraic model of constitutional chemistry as a basis for chemical computer programs.- Computer techniques for retrieval of information from the chemical literature.- Identification of organic compounds by computer-aided interpretation of spectra.- Mass spectra and computers.- Computer-gas chromatography.- Computer-assisted instruction in chemistry.Springer Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 208 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -The mechanism of blood coagulation.- Postjunctional supersensitivity and subsensitivity of excitable tissues to drugs.- The cell surface in cell interactions.Springer-Verlag GmbH, Tiergartenstr. 17, 69121 Heidelberg 200 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 60 pp. Englisch.

Taschenbuch. Condición: Neu. This item is printed on demand - Print on Demand Titel. Neuware -does not vary more than 1 % over the whole surface. Stimulus: The luminance of the stimuli can be regulated by means of neutral density filters. These filters are neither entirely neutral nor completely uniform, but these variations are not significant for perimetry. The maximum luminance of the stimuli is standardized at 1000 asb (316 2 cd.m-). The standard GP for kinetic perimetry has 3 neutral density filters which reduce the luminance by 0.5, 1.0 and 1.5 log units respectively. The modification of the GP for static perimetry is supplied with an additional series of four neutral density filters, which allow luminance steps of 0.1, 0.2, 0.3 and 0.4 log units. The resulting luminance values, expressed in apostilb, are given in Table I. TABLE I Luminance values of the Goldmann perimeter 4 3 2 steps lux 1430 450 143 45 3,1 asb 1000 315 100 31,5 3,1 2 cd/m 315 100 31,5 10 3,1 ßL ±30 10 3 3,1 L log L asb 3 2,5 2 2 1,5 0,5 2 Background: 31,5 asb. = 10 cd/m ¿ Coefficient of reflection 0,7. 1 2 (1 asb = -cd/m).Springer-Verlag KG, Sachsenplatz 4-6, 1201 Wien 372 pp. Englisch.