Häufige Hauttumoren in der Praxis (German Edition)

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This is partly due to factors such as heterogenous distribution of tumor antigens, insufficient blood supply of tumors, high interstitial pressure, and the large interstitial space that antibodies have to traverse. This area of research has attracted the interest of clinicians and scientists from many different disciplines.

It is now clear that the full potential of RIT can only be realized through the concerted efforts of laboratory scientists molecular biologists, cell physiologists, chemists, radiation physicists, and biologists and cancer clinicians in nuclear medicine, radiooncology, and internal oncology. Acute and long-term side-effects of radiotherapy : biological basis and clinical relevance by W Hinkelbein 1 edition published in in English and held by 46 WorldCat member libraries worldwide Biologists and radiotherapists present their experimental work and clinical data in the field of radiation injuries of normal tissues and organs.

Particular regard is payed to the relevance of biological mechanisms in clinical situations. Principles of radiation damage and combined treatment toxicity in radio-chemotherapy are being explained. The main topics discussed are the importance of microvasculature, time, doseand fractionation and factors modifying clinical radioresponse for early andlate radiation effects. Tissues and organs considered in this volume are mucosa and skin, lung and heart, bladder and muscle, CNS and eye. Preclinical hyperthermia by W Hinkelbein 1 edition published in in English and held by 46 WorldCat member libraries worldwide Physicians and biologists here present their experimental work in the field of hyperthermia, paying particular regard to its relevance in clinical situations.

Principles of heat action and combined treatment modalities are explicated. The main topics discussed are the effects of such treatment on normal tissues, animal tumors, malignant cell lines and human tumors. Locoregional high-frequency hyperthermia and temperature measurement by G Bruggmoser 2 editions published in in English and held by 44 WorldCat member libraries worldwide The present challenge in the treatment of tumors is to reduce the number of patients that still die as a result of primary tumors. In order to reduce this percentage, new types of radiation sources with a higher linear energy transfer have been intro duced, such as neutrons and pions.

Fractionation patterns have been modified and radiosensitizers have been applied to in crease biological efficiency. Studies of the combined application of chemotherapy and radiotherapy have been made to find the best therapeutic effect. In the early s biological findings confirmed the effect of hyperthermia on tumor cells. Die Histologie der Dermatosen mit allen wichtigen Varianten wird jeweils auf einer Doppelseite in klar strukturierten Texten zu Klinik, Histologie und Differenzialdiagnosen und mit groformatigen Farbabbildungen bersichtlich dargestellt.

Alle Abbildungen sind mit Hinweisen zu charakteristischen histologischen Details versehen. Fr die 3. Auflage wurden alle Inhalte aktualisiert und um zustzliche Krankheitsbilder und Erkenntnisse aus molekularbiologischen Studien zu melanozytren Neoplasien erweitert. Das Buch ist ideal als systematische Einfhrung und als Nachschlagewerk fr Dermatologen und Pathologen geeignet.

Neu in der 3. Forschung ber die Entstehung von Hauttumoren sowie ber Hauttumoren bei Transplantatempfngern. Burgdorf, M. In his work, Psychologie und Alchemie, published in , Jung wanted to present a reconstruction of alchemy. In order to do this he used a method of psychology, which he modified and enriched with inspirations drawn from neo-romantically-oriented German medical historiographies of the nineteen thirties.

Using historical materials, he intended to demonstrate the empirical character of his Depth Psychology, a widespread concept, ingrained in our supra-personal social unconscious. The present article questions the nature of Jung's reconstruction of alchemy as historical reconstruction. The author presents the methodological bases referred to by Jung derived from his concept of medical practice and compares them with a manner of thinking typical of contemporary historical analysis.

The article also presents Jung's inspirations from the medical historiography of his time, as well as the dissimilarity of his concept with the model of historical narrative construction in force in the historiography of the thirties and forties. At the same time, it presents the elements of the "romantic inheritance" in Jung's thought, drawn from the tradition of German non-materialistic medicine of the first half of the nineteenth century. Recent historiography on the growth of periodical publishing has emphasized newspapers and journals as constituents of an emergent communications system in early modern Europe.

This system comprised the newspapers, journals and other publications that contributed its content, and also the postal systems that were the principal method of distributing that content. This article describes how the growth of this system in central Europe was supported in large measure by financial incentives that it offered to both constituents.

First, in contrast with postal systems in France and the UK, the Thurn und Taxis Reichspost inserted itself as a middleman in the sale of periodicals, which gave the Reichspost an incentive to promote the trade. Second, the financial conditions for periodical publication made their costs depend more heavily on costs that were scalable to circulation than is true today, which resulted in the viability of publications with a lower circulation. The same cost structure also made it possible for certain prominent periodicals of the era to earn considerable profits for their publishers, as illustrated in this article by Allgemeine Literatur-Zeitung, which was published in Jena from The profits and perils of publicity: Allgemeine Literatur-Zeitung, the Thurn und Taxis Post, and the periodical trade at the end of the eighteenth century.

After plausibility checks and corrections, analyses for service and cost homogeneity were performed. In cases of inadequate DRG-representation attributes were sought that would make an appropriate reimbursement possible. Conspicuities and potential solutions were checked for clinical plausibility.

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Results: 44 concrete modification proposals for further development of the G-DRG system were formulated and submitted in due time to the InEK. For all modification proposals care was taken to minimise misdirected incentives and to reduce the potential for disputes with the cost bearers and their auditors services in settlements. Discussion: The publication of the G-DRG system shows which modification proposals have been realised. Essentially, an appropriate redistribution of the resources among the gynaecological and obstetrics departments is to be expected.

The financial pressure that is caused by the generally inadequate financing of hospitals will not be reduced by a further development of the G-DRG system. The analysis builds on recent work clarifying the specificity of some of these epimerases. We find three well defined clades responsible for inter-conversion of the gluco- and galacto-configuration at C4 of different N-acetylhexosamines.

This work brings clarity to an area that had become quite confusing. A table of the accession numbers for the proteins used in the analysis is provided to enable the major tree to be regenerated with the inclusion of additional proteins of interest. This and other suggestions for annotation of 4-epimerase genes will facilitate annotation. Crystallization, biomimetics and semiconducting polymers in confined systems.

Such an effect is of great interest for the fabrication of opto-electronic devices such as light emitting diodes with nanometer size emitting points and solar cells comprising of blends of electron donating and electron accepting polymers. Eine solche Emulsion wird Miniemulsion genannt. In der Dissertation wurden nun z.

Schutzteilchen, ein Fussel etc. Wenn sich dann einmal ein Kristall gebildet hat, kann das Wasser im gesamten Eimer schnell zu Eis werden. Planungsmodelle und Planungsmethoden. Anhaltspunkte zur Strukturierung und Gestaltung von Planungsprozessen. The topic of this article ist the question, in which phases oft he political planning process planners apply their methodological set of tools.

That for the results of a research-project are presented, which were gained by an examination of planning-cases in learned journals. Firstly it is argued, which model oft he planning-process is most suitable to reflect the regarded cases and how it is positioned to models oft he political process.

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Thereafter it is analyzed, which types of planning methods are applied in the several stages oft he planning process. The central findings: Although complex, many planning processes can be thouroughly pictured by a linear modell with predominantly simple feedback loops. Even in times of he communicative turn, concerning their set of tools, planners should pay attention to apply not only communicative methods but as well the classical analytical-rational methods.

They are helpful especially for the understanding of the political process before and after the actual planning phase. Physik gestern und heute Spurensuche. Archaebakterien und Phylogenie der Organismen. Many biochemical and molecular biological features support this conclusion. Coercive Measures in Child and Adolescent Psychiatry in Post-war Germany, Using the Example of the "Pflege- und Beobachtungsstation" in the State Psychiatric Hospital Weissenau The patient admissions at the children's ward of the State Psychiatric Hospital Weissenau in the years , , and were analyzed regarding documented coercive measures.

Shortage of staff, mainly inadequately skilled personnel, a mixing of age groups in the patient cohort, neurological and psychiatric disorders and of patients who were in need of nursing and of those who needed treatment constituted the general work environment. Coercive measures against patients, mostly disproportionate isolations, were a constant part of daily life on the ward. This affected in particular patients who had to stay longer at the hospital and whose stay was financed by public authority. The uselessness of such measures was known, which can be seen e.

The situation still escalated in some cases for example by transfer to an adult ward. For a long time, coercive measures against patients were part of everyday life at the children's ward of the Weissenau; the actual figures are suspected to be much higher. Fiori, W. Astronomical ephemerides, navigation and war. Edition of the documents. Edition der Dokumente.

Praktische Fahrprüfung Klasse B - 7 Tipps damit du die Fahrprüfung bestehst!

During the whole period of the Second World War, England and the USA have exchanged astronomical ephemerides with Germany, even though these data were used for the navigation of warships and aircraft and were therefore of war importance. This astonishing fact is attested by numerous documents which survived in the archives of the Astronomisches Rechen-Institut ARI. In Germany, the exchange was even explicitly authorized by the ministry which supervised the ARI i. We present here examples of ephemerides for the Sun, the Moon, planets and stars, and explain the position determination by means of astronomical data.

Ephemerides were published in almanacs which were computed and issued by special ephemeris institutes. We describe the agreements on the international exchange of ephemerides which were reached in peace times, and the continuation of this exchange during the war using intermediaries in neutral countries, first in the USA U.


Involved persons were especially H. Hellweg und W. Lindblad Sweden , and A. Kopff ARI. All those relevant documents which are hold in the archives of the ARI, are described and annotated in detail. Scans of these documents are presented in a separate supplement. Digitalisierung - Management Zwischen 0 und 1.

Digitization as a process of expressing actions and values by codes 0 and 1 has already has become part of our lives. Digitization enables enterprises to improve production, sales and to increase volume of production. However, no standard digitization strategy has been yet developed. Even in the digitized business process management system, the most important position remains to a human being. The improvement of software products, their availability and the education system in the area of introduction and use of information technology is thus a striking feature in development of managing but also other current processes.

Astronomische Konzepte und Jenseitsvorstellungen in den Pyramidentexten. The Egyptian pyramid texts were first written down around B. They are based on the religious belief in a stellar hereafter and contain the astronomical knowledge of their authors. For example, the ecliptical belt was understood as a canal, on which moon and planets cruise; of the latter Mercury, Venus and Mars were identified. On the basis of their visibility in the course of a year the fixed stars were divided into two groups; a southern group with a period of invisibility and a northern group with continual visibility.

The ecliptical "canal" was correctly identified as a division line between the two groups of fixed stars. The aim of this book is to bring these texts foreward to a better understanding of their astronomical background. Dental-Implantate und ihre Werkstoffe. Some new trends in materials for dental implants, which also effect in the operative techniques and implant design, are described.

Advantages and shortcomings of the different material types are exemplified and correlated with their bioinert resp. The practical interest in metallic implants focussed in titanium resp. This book comprises the habilitation thesis submitted by F. Due to financial support from various organizations, it was issued in a very attractive form as a special publication of the Society for the history of the city of Kiel. The nice layout, the graphical sketches of buildings, instruments, and astronomical connexions, often designed by the author, and the scientifically precise text, written with a sense of humor, make a pleasant reading, in spite of sometimes quite extensive descriptions of architectural details or 'operating instructions' for meridan circles etc.

I have rarely read such an appealing text on astronomical history. The single chapters deal with the beginnings of astronomy in Kiel , Schrader's giant telescope from the late 18th century, Altona Observatory , the first years of the Astronomische Nachrichten, the last years of Altona Observatory , Bothkamp Observatory , the genesis of Kiel Observatory , the era of Krueger , the Kiel Chronometer Observatory , the era of Harzer , the era of Rosenberg , the decline of Kiel Observatory , and the Astronomische Nachrichten under Kobold The book is concluded with a glossary of technical terms, biographical sketches of known and unknown dramatis personae, as well as a list of references.

The author outlines lively sketches of people that were astronomically active in Altona, Kiel and its surroundings over a time interval of years. He also has evaluated private documents and has interviewed surviving witnesses of the s and s. He has located remote sources: for example, the son of the founder of the Astronomische Nachrichten, Richard Schumacher, served for some years as an assistant at the Chilean National Observatory, and had married Marie Bulling, a girl of German descent. From her "meagre diary entries" of that time published in Valparaiso in , the author suspects a "convenience marriage''.

Nevertheless, unreliable sources can provide a false picture: the interviewed custodian notes that the wife of the last official observatory director, Hans Oswald Rosenberg, was "Verena Borchardt, a Jewess from St. Petersburg'' p. This is more than incorrect. The family lived for some years in Moscow not St. In , his daughter Helene was born there - who later married the Kiel astronomer Wirtz. In , the Borchardt family moved to Berlin, where the father became a banker, and where Verena was born. On page too, Wirtz' capricious political views are quoted: "The day when the French troops entered Strasbourg was the happiest one in my life'', for which Theiss' paper of is quoted, and it is stated "source not given''.

Now, Theiss uses a study of Duerbeck and Seitter , where the precise reference in the Kiel Acta is given. Another series of peculiar statements refer to the Astronomische Nachrichten p. Totally fabricated is the author's statement that the journal is now published by "the Astronomical Computing Centre [sic] in Heidelberg''. In spite of these slightly critical notes on some irrelevant details, I can wholeheartedly recommend this book: it is an indispensable source of information for anyone who is interested in the history of astronomy in German-speaking lands in the 19th and the first half of the 20th century.

Internationale Schulreformtendenzen und das Problem der Lehrerausbildung. The main theme of this article is that the socio-economic and educational changes which have occurred in industrialized countries in the past 20 to 25 years necessitate a thorough reform of the present system of teacher education. The first group of such changes includes the information explosion, greater occupational mobility, the growing significance and increasing role of the sciences, the development of the mass media, higher educational aspirations, technical development, the acceleration of the psycho-physical development of children and youth, and the injurious effects of the uncontrolled development of the constantly changing civilisation deterioration of the human environment, diseases caused by the effects of civilisation, etc.

In the face of these changes, teachers must not remain indifferent and teacher education systems have to take them into account. Within the second group of changes influencing the content and methods of teacher education, the most important is the generalisation of education at the pre-school, primary and secondary school levels and also at the university level. As a result, education in many types of school and at ever higher levels has lost the elitist character it still had, not so long ago, and has become a mass activity.

This has considerably affected teachers' work and, necessarily, also the work of the teacher education systems. This must also be reflected in teacher education. In order to adapt the teacher education systems to the requirements of the changing society, a reform of the goals, contents and methods of the system will have to be prepared and implemented as a prerequisite and starting point for a global reform of the entire education system. The factsheet describes the Uniform National Discharge Standards and explains what vessels are regulated and how the rulemaking will impact states.

It details the batch and phase approach to rulemaking and lists the first batch of vessel discharges. The EPA and Department of Defense used a batch rulemaking process for establishing the discharge standards for vessels of the Armed Forces. They identified and evaluated the discharges and determined which require marine pollution control devices. Synonymie und Interlinguistik Synonymy and Interlinguistics. Discusses the relationship between traditional synonym theory and two perspectives of interlinguistics: contrastive lexical analysis and languages in contact research. The goal and methods of each are described briefly, and a new synonym conceptualization is proposed that better fits synchronic dynamics than the traditional theory.

Examples from…. Verhalten und Neurobiologie von stimmbegabten Insekten. Crickets, tettigoniids bush crickets or long-horned grasshoppers and acridids short-horned grasshoppers are well-suited animals to study acoustically mediated behavior and to search for the underlying sensory, nervous, and effector mechanisms. Several behavioral tactics are described which improve reproductive success, serve to avoid predators such as bats, or have been developed for defence against parasitic insects.

Phonotactic orientation of female crickets toward the calling male was chosen, since for this behavior the underlying sensory and nervous mechanisms have been intensively studied. Song recognition was found to be based on one critical parameter of the song, the syllable period, and the females show a bandpass behavior for which a correlate exists in local brain neurons. Sound orientation is based on a pressure gradient mechanism in each ear, and it needs a binaural intensity comparison within the central nervous system.

The papers from a symposium held at the Fern Universitat included in this collection focus on distance education in theory and practice. Contributions are written in English or in German, with summaries available for each in the language not used for the paper concerned. Contributions are: 1 "Distance Education as Communication: The…. Semantik und Semantisierung Semantics and Semanticizing.

Argues against the thesis that exact translation is impossible, because languages reflect different world-views or different cognitive structures de Saussure, Humboldt, Whorf, Weisgerber. The possibility of underlying universals Lenneberg, Heger must be considered and discussed in the field of language teacing.

Text is in German. Renal denervation: unde venis et quo vadis? Renal denervation is a minimally invasive, catheter-based option for the treatment of refractory hypertension. Indications and contraindications for renal denervation have been defined in an interdisciplinary manner. The efficacy and safety of the procedure were evaluated. These results were not confirmed in the first randomized controlled trial with a non-significantly superior blood pressure reduction of The efficacy and long-term effects of renal denervation need to be re-evaluated in light of the HTN3 study results.

To date, renal denervation should not be performed outside of clinical trials. Future trials should also assess if renal denervation can be performed with sufficient safety and efficacy in patients with hypertension-associated diseases. The use of renal denervation as an alternative therapy e. The indication for renal denervation should be assessed in an interdisciplinary fashion and according to current guidelines with a special focus on ruling out secondary causes for arterial hypertension.

Renal denervation leads to a significant decrease in office blood pressure; however, the impact on hour blood pressure measurements remains unclear. In the first randomized controlled trial on renal denervation with a control group undergoing a sham procedure, blood pressure reduction failed to reach the anticipated level of superiority over best medical treatment.

Periprocedural complications are rare, but long-term safety can currently not be appraised due to the limited data available. Zur Biosynthese von Phenylalanin und Tyrosin. With the discovery of arogenic acid two new pathways for the biosynthesis of phenylalanine and tyrosine have been revealed. The occurrence of two, three, or four pathways for the biosynthesis of phenylalanine and tyrosine in microorganisms and plants may be a useful tool for taxonomic classifications.

Investigations on enterobacteriaceae, pseudomonads, flavobacteria, streptomycetes, archaebacteria, and on Sphaerotilus, Trichococcus and Leptothrix species from bulking sludge are described. The possible role of arogenate in the evolution of the pathways for tyrosine and phenylalanine biosynthesis is discussed. Coulometrische titration von hypochloriten und chloraten. Hypochlorite was determined by direct coulometric titration with iron II in an acetate buffered solution.

Chlorate was titrated with titanium III in 2M hydrochloric acid. Amperometric indication with one and two electrodes, respectively, was used.

Mixtures of hypochlorites and chlorates, e. Sexuality and reproductive behaviour of Cereus pedunculatus Pennant and several forms subspecies of Actinia equina L. At the stage of 96 septae C. The latter appeared simultaneously in the gastrocoele. Adolescent A. Following a sterile period, oocytes and young individuals of different age groups were present almost throughout the whole year in adult anemones. Samples of the larviparous A. Spontaneous longitudinal fission was occasionally observed in adult A.

This article expounds the theory that the failure of school is due to the incompatibility of the educational goals of school and traditional upbringing in Africa. The thesis is put forward by adherents of the psychoanalytical model of child development and seeks to emphasize the discrepancies between the childhood where children are not frustrated and where their needs are cared for and the school education which represses the drives and its socialization of children.

Finding a number of anthropological studies are discussed and reinterpretations of the ethno-psychoanalytical materials attempted. Neither the evaluation of childhood in Africa nor the theory that with school come wholly new expectations of behaviour e. In conclusion, other explanations for the difficulties encountered by school in Africa are offered.

Wer kann, darf und soll bleiben?. Lokale Re-Konfigurationen im Fluchtmigrations- und Integrationsdiskurs. The current discourse on a limitation of immigration is characterized by social and symbolic boundaries, that allow some statements about the un desirability of certain immigrants and asylum seekers. The article uses the example of the city of Altena to show how, based on strategic approaches to urban development, refugee migration and its impacts are re interpreted at the local level. This book collects about 15 papers most of them by one single author on Einstein and the history of general relativity GR and the foundations of relativistic cosmology.

The matter not only deals with Einstein and his times, but also with pre-GR ideas, and with the interplay of Einstein and his colleagues opposing as well as supporting personalities.

  • Bono on Bono: Conversations with Michka Assayas;
  • Peter Jurgen Wilhelm.
  • The Twins And Me.
  • I Love to Rhyme;
  • Browse by Communities & Collections - Zurich Open Repository and Archive.
  • The Lifting of the Mask.

As the title indicates, all papers are written in German, but they include comprehensive Abstracts both in German and English. The book is illustrated with quite a number classical - but also some far more original though not less beautiful - photographs and facsimiles of documents. The book is edited very well, though the style of references is not quite homogeneous.

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There is no Index. Hentschel covers Einstein's argumentation for the existence of graviational redshift, and the initial search for empirical support. The error analysis of observational evidence supporting relativistic light deflection is discussed in a paper by P.

In particular, H. Duerbeck and P. Flin - in their description of the life and work of Silberstein, who was quite sceptic on the significance of the observational verifications a la Eddington - include the transcription of two most revealing letters by Silberstein to Sommerfeld and to Einstein In the first letter, Silberstein clearly shows his scientific maturity and integrity by scrutinising the observational evidence supporting light deflection, presented at a joint meeting of the Royal Society and the Royal Astronomical Society.

The second letter, which is more a personal letter, includes lots of political references and connotations. Some of Einstein's political views are also revealed by D. Herrmann on the basis of his own correspondence with E. Straus, a collaborator of Einstein's. In a consequent paper, S. Grundmann gives remarks on Herrmann's contribution and illustrates Einstein's attitude towards Marx, Engels, Lenin and Stalin. Schemmel discusses Schwarzschild's cosmological speculations, and wonders why some people do immediately grasp the meaning and consequence of newly proposed doctrines, whereas the bulk of the contemporaneous scientists respond in a rather low profile.

Jung reviews Einstein's contribution to cosmology, leading to the Friedmann-Einstein and Einstein-de Sitter universes with a detailed Appendix on the Friedmann-Lemaitre cosmology , and also presents the cosmological work of Selety, and his correspondence with Einstein. In a subsequent paper, H. Schmidt comments on Einstein's criticism on de Sitter's solution of the Einstein field equations. Controversies with Einstein are elaborated by G. Singer on Friedmann and by K. Roessler on Lemaitre. Renn and T. Sauer discuss Mandl's role in the publication history of Einstein's papers, notably Einstein's short paper on gravitational lensing.

Finally, the book concludes with a contribution by D. Herrmann about the relationship between Einstein and Archenhold Observatory where Einstein gave his first Berlin popular lecture in , the transcription of H. Treder's public address at the Einstein memorial plaque, and an inventory list of about 50 Einstein memorabilia - monuments, busts, plaques - compiled by W. This book is based on ideas approached in a historical context from the individual perspective of the authors. It is a real treasure trove of information and basic references on the history of GR, and it also covers quite some grounds with mathematical equations.

The hydrogeochemistry of the Cretaceous Emscher Fm. Beneath a weathered zone, unweathered rocks containing pyrite were found. Groundwater data from the Emscher Fm. The spatial distribution depends on the presence of Quaternary cover sediments. The main mobilization mechanism of both contaminants appears to be pH-triggered desorption from mineral surfaces. Wer kann, darf und soll bleiben? Urbanisation processes increase land-use conflicts and ecosystem destruction globally. Especially in China, a country with an outstanding urbanization rate, city governments are challenged by environmental and health problems.

Urban green spaces - subsequently defined as urban biodiversity and ecosystem services - can minimize numerous environmental risks and at the same time contribute to the citizens' well-being and quality of life. In this highly relevant field of nature conservation, geographical perspectives are required - in science, politics, policy, planning and practice.

Status Report on Speech Research. Martinus Nijhoff, Collier, R. The perceptual relevance of formant trajectories in diphthongs. Studies in Dutch phonology Dutch Studies, Vol. The Hague: Martinus Nijhoff, Der Rohingya - Konflikt:. Genese, aktuelle Situation und geopolitische Aspekte. The Rohingya in Myanmar are often described as the most persecuted minority in the world. In the former Burma, the Rohingya are considered illegal immigrants and have been denied citizenship for decades.

Since the end of August , more than , Rohingya from Rakhine State have fled to neighboring Bangladesh. While the public usually discusses the ethnic-religious and humanitarian causes and effects of the conflict, the political, economic and geopolitical interests of directly and indirectly involved actors also play a role.

The contribution at hand argues that migration, especially of refugees, has received growing recognition in public and academic debates in the past few years. It traces the reciprocal references to a highly dynamic research subject within migration scholarship, public discourse, and politics. It thereby highlights the value and risks of a space-related perspective. In addition to an outline of established and newly emerging research fields within geographic migration research, the contribution opens the debate on practical implications of the addressed topical challenges within the field.

Physik gestern und heute: Visualisierung mit der Schlierenmethode. Cornularia cornucopiae is a colonial coral whose polyps arise singly from stolons. In contrast with other octocrallia C. Therefore, tissue preparation for electron microscopic investigations can be performed. The presence of a calyx such as the theca of hydroids, in which the polyps may be completely retracted, is conspicuous. The calyx consists of three layers. The structure of the basal layer suggests massive collagen.

The body wall is connected with the calyx by living desmocytes. The histology of the oral disc and the actinopharynx is identical. The ventral side of the polyps bears the siphonoglyph. Below the pharynx the inner edges of the mesenteries are free and form the mesenterial filaments. The two ventral mesenteries differ from the others; the one is long and exhibits a large and heavily flagellated filament, the other is short and lacks a filament.

The muscular system is represented by gastrodermal circular fibres in the body wall and by radial and longitudinal fibres in the septa; a large septal retractor muscle is missing. The sperm cells of Patella coerulea Patellacea , Monodonta turbinata, and Gibbula tumida Trochacea were investigated by means of transmission electron microscopy.

Their head contains an apical acrosome and a roundish nucleus followed by 4 or 5 mitochondria and a centriolar apparatus which consists of two centrioles, one of which bears a flagellum. The sperm cells of Monodonta and Gibbula are very similar to each other and differ mainly in size; Patella exhibits more differences very small acrosome, subacrosomal space, variable number of spherical mitochondria origin of spermic dimorphism?

The development of the sperm cells shows no peculiarities. Elastolysen und Hauterkrankungen mit Verlust der elastischen Fasern. Diese im Mittelalter neu erprobte Form basierte auf der Entdeckung des Blutkreislaufes durch William Harvey Examples for genetic engineering are the transfer of nuclei between cells of higher animals and the introduction of heterologous DNA into bacteria by means of plasmids.

The former approach will help to establish new ways in animal breeding, the latter provides bacterial cells that produce proteins of medical importance. The moral justification of related studies in man is still open, but the possible risks of gene technology can be coped with by adhering to proper safety regulations. Rede und Gesinnung Speech and Ways of Thinking.

Analyzes some of the basic ideas in Georg Franklin's book "Versuch einer neuen Lehre von den vornehmsten Gegenstanden der deutschen Sprachlehre; nach den Regeln der Vernunftlehre in sechs Abhandlungen verfasst" and compares them to those of such modern linguists and philosophers a s Searle, Austin and Wunderlich. Concludes that…. Provides the answers to common questions about the Uniform National Discharge Standards, including what they are, how discharges were evaluated, what vessels are covered by the regulations and how states have been involved.

Migration und Flucht als Forschungsthemen der Geographie. Eine Standortbestimmung. It is argued that film and representation in general does not merely reflect a preceding reality; it also actively serves to construct it. It is shown how Scott's film privileges one particular perspective on an actual event and how this point of view is objectified and installed in the memory of Western media culture.

What potential implications does an increased blurring of fact and fiction in the representation of war have? What are the consequences for political and pedagogical practice? What role can cultural studies play in these processes? Common Market assistance. At most places there is now electricty and piped water. European Common Market. In Greenland the vote was 2. Six other aerospace companies also are maturing launch vehicle and spacecraft designs under CCDev2, including Alliant Techsystems Inc. For more information, visit www.

Image credit: Space Exploration Technologies. For accurate planning of vertical borehole heat exchanger systems, knowledge of thermo-physical ground parameters is critical. This study reports laboratory-measured thermal conductivity and diffusivity values of Mesozoic sandstones Lower and Middle Buntsandstein from four wells. The measurements were made on drill core using an optical scanning method. The mean thermal conductivities of the sandstones range between 2. The mean thermal diffusivity values range between 1. Thermal properties are closely related to the petrography and lithostratigraphy of the sandstones.

Additionally, three temperature correction methods were applied for the purpose of evaluating the comparative accuracy and the correction schemes with respect to local in-situ conditions. J Geophys Res, , are most suited for the respective sandstone data set. The 36 letters edited in this contribution touch on Emil O. Some complementing passages about background subjects are incorporated, viz. Emil O. Urban areas are a focus of increasing conflict with regard to water use and water protection. Many of these contaminants are related to human behaviour and activity, such as pharmaceuticals, personal care products collectively PPCPs and endocrine-active substances, and are increasingly found in urban water systems.

However, the behaviour and the effects of these contaminants in the environment have been widely unknown until now. Consequently, it is important to pay more attention to such substances and to explore new integrated methodologies including flux calculations as well as chemical and biological investigations for determining the impact of human activities on urban water systems and on processes within the urban watershed.