Showing papers by "University of Jena published in 1977"
TL;DR: The strobilurins are two antifungal antibiotics which were isolated from the mycelium of Strobilurus tenacellus strain No. 21602 and strongly inhibited the incorporation of radioactive leucine, uridine, and thymidine into the acid-insoluble fraction of cells.
Abstract: The strobilurins are two antifungal antibiotics which were isolated from the mycelium of Strobilurus tenacellus strain No. 21602. The strobilurins A and B are highly active against yeasts and filamentous fungi. In vitro antitumor activity was tested using cells of the asciticform of EHRLICH carcinoma. The strobilurins strongly inhibited the incorporation of radioactive leucine, uridine, and thymidine into the acid-insoluble fraction of cells (protein, RNA, and DNA). The molecular formulas as determined by high resolution mass spectrometry are C16H18O3 for strobilurin A and C17H19ClO4 for strobilurin B.
249 citations
98 citations
62 citations
TL;DR: The pedigree data confirm the hypothesis of X-linked inheritance of this multiple congenital anomaly/mental retardation (MCA/MR) syndrome, which has manifestations include shortness of stature with a disproportionately large head, mental retardation, hypotonia with or without congenital joint contractures, seizures and a strikingly characteristic personality.
Abstract: We report 5 new cases of the FG syndrome, 1 sporadic, 3 brothers from a European family, and another affected male born in the first FG syndrome family reported by Opitz and Kaveggia in 1974. The pedigree data confirm the hypothesis of X-linked inheritance of this multiple congenital anomaly/mental retardation (MCA/MR) syndrome. Its manifestations include shortness of stature with a disproportionately large head, mental retardation, hypotonia with or without congenital joint contractures, seizures and a strikingly characteristic personality and facial appearance, imperforate anus and/or other gastrointestinal defects, congenital heart defects, and many minor manifestations. Chronic pulmonary disease in some affected males may be a complication of hypotonia.
48 citations
39 citations
TL;DR: In this paper, the authors propose a framework to improve the quality of the information provided by the user. But they do not discuss the impact of the user's actions on the overall system.
Abstract: qNАстОьЩАь РАБОтА (А тАк жЕ ЕЕ пРОДОлжЕНИЕ — РА БОтА «ОБЩИЕ ФУНкцИОНАльН ыЕ пРО-стРАНстВА, IV») пОсВьЩЕНА ИсслЕДОВ АНИУ БАНАхОВых пРОст РАНстВBp, qg(x) ИFp,qg(x) РАспРЕДЕлЕНИИ (ОБОБЩЕННых) ВRn. В спЕц ИАльНых слУЧАьх ЁтИ пРОстРАНстВА РОДстВ ЕННы ИжВЕстНыМ клАсс АМ сОБОлЕВА—лЕБЕгА—БЕ сОВА, ИжОтРОпНыМ И АНИ жОтРОпНыМ. жДЕсь РАссМАтРИВАУт сь слЕДУУ-ЩИЕ сВОИстВА: плОтНОсть г лАДкИх ФУНкцИИ, ЁкВИВ АлЕНтНыЕ НОРМы, ИНтЕРпОльцИь, В клУЧЕНИь И сРАВНЕНИь. ОБЩИЕ ФУНкцИОНАльНы Е пРОстРАНстВА. III (пРОстРАНстВАBp,qg(x) ИFp,qg(x), 1
35 citations
TL;DR: In this article, the influence of barrier impurities with short-range potentials on electron tunneling near resonance energy through insulating layers is presented in the realistic three-dimensional case.
Abstract: A systematic theoretical treatment of the influence of barrier impurities with short-range potentials on electron tunneling near resonance energy through insulating layers is presented in the realistic three-dimensional case. The comparison with the usual one-dimensional model exhibits differences with respect to the dependence on tunneling direction and the broadening of impurity states. In particular, an evaluation of the resonance tunneling contribution is given for barrier impurities described by a screened charge potential.
Es wird eine konsequente theoretische Behandlung des Einflusses von Barrierenverunreinigungen mit kurzreichweitigen Potentialen auf den Tunnelprozes von Elektronen in der Nahe von Energieresonanzen durch Isolatorschichten im realistischen dreidimensionalen Fall vorgelegt. Der Vergleich mit dem ublichen eindimensionalen Modell zeigt Unterschiede bezuglich der Abhangigkeit von der Tunnelrichtung und der Verbreiterung der Verunreinigungsniveaus. Speziell wird der Beitrag der Resonanztunnelung fur Verunreinigungen, die mit Hilfe von abgeschirmten Potentialen beschrieben werden, quantitativ abgeschatzt.
32 citations
29 citations
TL;DR: In this paper, the authors deal with the preparation and characterization of single-domain BaNbxVTixIIITiITi1-2xIVO3 (x = 3 × 10-4 to 3.1 × 10 -2).
Abstract: This paper deals with the preparation and characterization of single-domain crystals of BaNbxVTixIIITi1-2xIVO3 (x = 3 × 10-4 to 3.1 × 10-2). x = 0.01 yields the Curie temperature of 55°C. The characteristic platelet-like appearance of BaTiO3a single crystals grown from a basic BaCl2 flux is maintained up to x = 5 × 10-3. The anisotropy of the specific conductivity is about half an order of magnitude at room temperature and decreases at rising temperatures. The largely analogous dependence of the lattice constants on temperature makes the conclusion possible that the mobility of the polarons is essentially determined by the changes in distance between the Ti-atoms. The absorption spectrum was taken between 400 and 26,000 cm-1. Besides the absorption at 4000 cm-1 characteristic of polaron states it has a band of weak intensity at 16,000 cm-1 which is due to d-d electron transitions in Ti(III)-cations. Altogether, the consideration of the crystal field results in the establishment of a term scheme which perm...
27 citations
TL;DR: In this paper, the Beziehung zwischen anisotroper Toluidinblaufarbung and Membranstruktur untersucht is discussed.
Abstract: An der Erythrocytenmembran wird die Beziehung zwischen anisotroper Toluidinblaufarbung und Membranstruktur untersucht. Enzymatischer oder chemischer Abbau der Glykokalyx stort die topo-optische Farbung. Eine Abschwachung wird auch durch Digitoninbehandlung Glutaraldehyd-fixierter Zellen erzielt. Durch Chloroform-Methanol-Inkubation wird die anisotrope Toluidinblaufarbung geloscht, aber sie kann nach Aldehyd-Bisulfitbildung wieder nachgewiesen werden. An agglutinierten Erythrocyten ist die Wirkung einer Chloroform-Methanol-Behandlung stark eingeschrankt. Die reversibel kollabierte Glykokalyx zeigt keine topo-optische Farbung. Die Befunde werden als Hinweis auf die Bedeutung der raumlichen Orientierung der Glykoproteine an der Zelloberflache gedeutet. Storungen im Aufbau der Glykokalyx durch Hydrolyse bzw. Verlust oder durch Umverteilung von Komponenten verandern die Bedingungen fur die anisotrope Toluidinblaufarbung. Eingriffe an der Lipidschicht konnen mit solchen Veranderungen einhergehen; fur die Interkalation von Farbstoffmolekulen in die Lipidschicht ergab sich jedoch kein Anhalt. Die topo-optische Farbung mit Toluidinblau wird auf Grund dieser Ergebnisse als geeignetes Verfahren zur Untersuchung der Glykokalyx von Erythrocyten (und vermutlich auch anderer Zellen) angesehen.
19 citations
TL;DR: In this article, the population of the S 1 level excited by two-photon absorption (TPA) and of secondary populated levels has been investigated using a probe beam method, and it was found an energy barrier Δ E = 5 × 10 2 cm −1 of the thermically activated transition S 1 → 1′.
TL;DR: In this article, the transanular double bond participation of N-bromosuccinimide (NBS) and water on (Z,Z)-1,5-cyclononadiene (1) was shown to give 1βbromo-3a α,4α,5,6,7,7a α-hexahydroindan-4-ol (2 a) and 2β,6β-dibromo -10-oxabicyclo[5.2.1]decane (3
Abstract: The action of N-bromosuccinimide (NBS) and water on (Z,Z)-1,5-cyclononadiene (1) results in transanular reactions to give 1β-bromo-3a α,4α,5,6,7,7a α-hexahydroindan-4-ol (2 a) and 2β,6β-dibromo-10-oxabicyclo[5.2.1]decane (3). The formation of2 a is a result of transanular double bond participation.3 is considered to be produced from intermediary (Z)-2β-bromo-5-cyclononen-1α-ol (6)via transanular participation of the hydroxyl group. The reaction of1 withNBS and methanol similarly produces 1β-bromo-4-methoxy-3aα,4α,5,6,7,7a α-hexahydroindan (2 b) and3.
TL;DR: In this paper, the results obtained by means of a modified theory are compared with those obtained by the conventional theory and with values received for the reflection by an amorphous specimen.
Abstract: X-ray diffraction phenomena are examined for an extremely asymmetric Laue case with two reciprocal lattice points on the Ewald sphere and a small angle between the crystal surface and the incident beam. The results obtained by means of a modified theory are compared with those obtained by the conventional theory and with values received for the reflection by an amorphous specimen.
Es werden Interferenzphanomene von Rontgenstrahlen fur einen stark asymmetrischen Lauefall mit zwei reziproken Gitterpunkten auf der Ausbreitungskugel und einem kleinen Winkel zwischen Kristalloberflache und einfallendem Strahl untersucht. Die nach einer modifizierten Theorie gewonnenen Ergebnisse werden mit den nach der konventionellen Theorie gewonnenen und mit Werten fur die Reflexion an einem amorphen Stoff verglichen.
TL;DR: Outstanding features of Pictolejeunea might be emphasized: The cell pattern at the apex of lobule, very numerous deeply redbrown ocelli are scattered over leaves, amphigastria, involucre and perianth, always without innovation.
Abstract: Beschreibung von Pictolejeunea [Typusart: P. picta (Gott. ex Steph.) comb. nov. ≡ Prionolejeunea picta Gott. ex Steph.]. Zu Pictolejeunea gehoren 2 Arten der Neotropis — P. picta und P. sprucei sp. nov. — sowie aus Borneo P. mizutanii nom. nov. ≡ Cheilolejeunea picta Mizut. Als besonders bemerkenswerte Eigenheiten von Pictolejeunea sind hervorzuheben: 1. Das Zellmuster der Apikalregion des Lobulus. Die Hyalinpapillenzelle inseriert ental, d. h. an der Innenflache einer Randzelle in der Mitte des Apikalrandes. Diese Randzelle reprasentiert den ersten Zahn, ragt jedoch nicht aus dem Rand. Der wohlentwickelte zweite Zahn bildet die Lobulusecke. 2. Blatter, Amphigastrien, Involukrum und Perianth sind von sehr zahlreichen, tief rotbraunen Ozellen gesprenkelt. 3. Gynozien an sehr kurzen gyrothekalen Asten, stets ohne Innovation.
Description of Pictolejeunea [type species: P. picta (Gott. ex Steph.) comb. nov. ≡ Prionolejeunea picta Gott. ex Steph.]. Pictolejeunea comprises 2 Neotropical species — P. picta and P. sprucei sp. nov. —, whereas P. mizutanii nom. nov. ≡ Cheilolejeunea picta Mizut. is originating from Borneo. As outstanding features of Pictolejeunea might be emphasized: (1) The cell pattern at the apex of lobule. The hyalin cell inserts on the inner surface at the base of a marginal cell in the middle of the apical margin. This marginal cell is representing the first tooth, but does not protrude out of the margin. The well developed second tooth forms the angle of the lobule. (2) Very numerous deeply redbrown ocelli are scattered over leaves, amphigastria, involucre and perianth. (3) Gynoecia on very short gyrothecal branches, always without innovation.
TL;DR: In this article, a good agreement between the theoretically and experimentally determined values of zero-field splitting B: of Cr3+ in α-LiIO3 is achieved employing the methods of Rimmer and Johnston and Macfarlane, where lattice sums are determined from the structure of the chromium centre and by the use of the quadrupolar constant of lithium in chromium-doped LiIO3.
Abstract: The constant of zero-field splitting B: of Cr3+ in α-LiIO3 is calculated employing the methods of Rimmer and Johnston and Macfarlane. The lattice sums are determined from the structure of the chromium centre and by the use of the quadrupolar constant of lithium in chromium-doped LiIO3. A good agreement between the theoretically and experimentally determined values of B is achieved. The contributions of most mechanisms to the zero-field splitting of S-states investigated so far are calculated for Fe3+ in α-LiIO3 by using the above lattice sums because the structure of the centre is quite similar to that of the Cr3+ centre. The theoretically determined value proves to be too small by one order of magnitude. The relativistic mechanism in an overlap model is supposed to contribute to a better agreement.
Die Nullfeldaufspaltungskonstante B von α-LiJO3:Cr3+ wird nach den Methoden von Rimmer und Johnston und von Macfarlane berechnet. Die Gittersummen werden aus der weitgehend bekannten Struktur des Zentrums und unter Benutzung der Quadrupolkopplungs-Konstante des Li in α-LiJO3:C3+ bestimmt. Die Ubereinstimmung zwischen experimentellem und theoretischem B ist gut. Da das Fe3+-Zentrum in α-LiJO3 eine sehr ahnliche Struktur besitzt, werden mit den gleichen Gittersummen die Beitrage der meisten bisher untersuchten Mechanismen zur Nullfeld- aufspaltung von S-Zustanden dafur berechnet. Dieser Wert ist eine Grosenordnung zu klein. Es wird angenommen, das der relativistische Prozes in einem Uberlappungsmodell eine bessere Ubereinstimmung bringt.
TL;DR: In this article, the gain of a ring and a Fabry-Perot resonator with ring and ring-perot resonators respectively is calculated for a ring laser with a single mode in order to achieve stable bidirectional operation.
Abstract: The gain calculated for a laser with ring and Fabry-Perot resonators respectively is given in a general formulation which shows clearly the influence of the spatially inhomogeneous saturation due to the standing wave pattern and the resulting Bragg scattering. When selecting a single mode in a Fabry-Perot resonator, the losses necessary to quench the modes are equal to those losses which the selected mode suffers due to the self-induced Bragg grating in the active medium. In a unidirectional ring laser, the losses only need exceed the gain of additional separate gain reservoirs of the modes. Also possible reasons are dealt with which cause stable bidirectional operation in a ring laser with homogeneously broadened gain.
TL;DR: In this article, a thermodynamic potential characterizing the sources of gravitational fields is presented, and the entropy production density is derived by means of this potential, which is then used to derive the equations with dissipative terms in the sense of irreversible thermodynamics.
Abstract: Einstein's gravitational theory is analyzed from a thermodynamic point of view A thermodynamic potential characterizing the sources of gravitational fields is presented By means of this potential the entropy production density is derived Einstein's equations with dissipative terms appear as linear phenomenological laws in the sense of irreversible thermodynamics Some thermodynamic influences on gravitational phenomena are discussed
TL;DR: In this paper, the authors propose a method to solve the problem of how to find the best solution for a given problem by using the information of the user's interaction with the system.
Abstract: Настоящая работа (а та кже работа «Общие функциональные прос транства. III») посвя-щен а исследованию банахо вых пространствBp,qg(x)и Fp,qg(x) распределений (обобщ енных) вRn. В специальных случая х эти пространства ро дственны известным классам Со болева-Лебега-Бесова, изотропным и анизотр опным. Здесь рассматр иваются следующие свойства: ф ормулы представления, мульт ипликаторы, двойстве нность, теоремы вложения.
TL;DR: PAH accumulation in renal cortical slices of rats is age-related different and suggests that the number of transport sites is increasing during the postnatal development of the kidney.
TL;DR: Cryostat sections of heart, skeletal muscle, spleen, liver, cartilage, brain, nerve, tongue, esophagus and salivary gland from man, rabbit, rat and guinea pig were stained with fluorescein isothiocyanate labelled Ricinus communis lectin and wheat germ agglutinin to stain connective tissue structures of the organs.
TL;DR: By the reaction of CrMes 2 · 3 THP with one and two moles of mesityllithium the new tetrahedral complexes LiCrMes 3 · Dx · Ae and Li 2 CrMES 4 · 4 THF * are obtained as mentioned in this paper.
01 Jan 1977
TL;DR: In vielen Vortragen der Harnsteinsymposien von Leeds, Madrid, Davos, Bonn, Wien and Jena (2, 5, 7-9, 13-23, 24, 27-28, 30) sowie in zahlreichen Publikationen der letzten Jahre wurde auf die Bedeutung der Ausscheidung steinbildender Ionen und Verbindungen hingewiesen as discussed by the authors.
Abstract: In vielen Vortragen der Harnsteinsymposien von Leeds, Madrid, Davos, Bonn, Wien und Jena (2, 5, 7-9, 13-23, 24, 27-28, 30) sowie in zahlreichen Publikationen der letzten Jahre wurde auf die Bedeutung der Ausscheidung steinbildender Ionen und Verbindungen hingewiesen. Grundlage jeder Harnsteindispensaire sind Harnsteinanalyse und klinisch-chemische Parameter.
TL;DR: The currentvoltage characteristics and especially the behaviour of the critical Josephson currents of V-VOx-Pb tunnel junctions are investigated experimentally in this article, where the maximum Josephson current and its temperature dependence deviate strongly from the theory.
Abstract: The current-voltage characteristics and especially the behaviour of the critical Josephson currents of V-VOx-Pb tunnel junctions are investigated experimentally. The maximum Josephson current and its temperature dependence deviate strongly from the theory. The London penetration depth of the vanadium films is found to be much larger than for pure vanadium but its temperature dependence is as expected from theory. The critical temperatures of the vanadium films are between 4.4 and 5.0 K. The ratio 2Δ(0)/(kTc) decreases with decreasing critical temperature as in the case of superconductors with paramagnetic impurities. The excess currents in the current-voltage characteristics of the tunnel junctions at low voltages are not related to the critical temperatures of the vanadium films.
Die Strom-Spannungs-Kennlinien und besonders das Verhalten des kritischen Josephsonstromes von V-VOx-Pb-Tunnelverbindungen werden experimentell untersucht. Der maximale Josephsonstrom und seine Temperaturabhangigkeit weichen stark von der Theorie ab. Die Londonsche Eindringtiefe der Vanadinschichten ist wesentlich groser als die fur reines Vanadin, ihre Temperaturabhangigkeit stimmt jedoch mit der Theorie oberein. Die kritischen Temperaturen der Vanadinschichten liegen zwischen 4,4 und 5,0 K. Das Verhaltnis 2Δ(0)/(kTc) fallt mit abnehmender kritischer Temperatur, wie es fur den Fall eines Supraleiters mit paramagnetischen Verunreinigungen erwartet wird. Die Grose der Uberschusstrome in den Strom-Spannungs-Kenn-linien der Tunnelverbindungen bei geringen Spannungen hangt nicht systematisch von der kritischen Temperatur der Vanadinschichten ab.
TL;DR: Repeated incubations of human red blood cells in low ionic isotonic sucrose result in an instantaneous agglutination, considered evidence of the reversible unfolding of glycocalyx glycoproteins in the low ioned medium.
TL;DR: In this article, (Z)-cyclooctene is treated with N-bromosuccinimide in the presence of water, and transanular products are obtained.
Abstract: In addition totrans-2-bromocyclooctanol andtrans-1,2-dibromocyclooctane,cis-4-bromocyclooctanol,cis-1,4-dibromocyclooctane,trans-1,4-dibromocyclooctane, and (Z)-5-bromocyclooctene are obtained, when (Z)-cyclooctene is treated with N-bromosuccinimide in the presence of water. Similarly the methoxybromination of (Z)-cyclooctene gives transanular products.
TL;DR: Boronic acid groups can be introduced in crosslinked and linear polystyrene by metalation with the complex butyllithium/N,N, N′,N′-tetramethylethylenediamine and subsequent treatment with boric acid esters.
Abstract: Boronic acid groups can be introduced in crosslinked and linear polystyrene by metalation with the complex butyllithium/N,N,N′,N′-tetramethylethylenediamine and subsequent treatment with boric acid esters. Investigations of the photochemical boronation of polystyrene by boron tribromid show that the reaction is accompanied by strong chain degradation, whereas the former method leads to an increase in molecular weight.
TL;DR: Steady state-populations of Wolffia arrhiza (L.) Wimm were cultivated in blue and red light, respectively, under mixotrophic conditions (ribose or saccharose), and plants cultivated with blue light have a higher activity of glucose-6-phosphate dehydrogenase; content of protein, chlorophyll, ATP, ADP, AMP and the energy charge were higher, too, as compared with plants cultivated in red light.
TL;DR: The course of moulting of Periplaneta americana larvae, in which the prothoracic glands were exstirpated, was investigated in two succeeding series.
Abstract: The course of moulting of Periplaneta americana larvae of which the prothoracic glands were exstirpated, was investigated in 2 succeeding series. It could be proved that all animals underwent 1 or 2 moulting processes inspite of the absence of the moulting gland. These results demonstrate that the generally accepted classical schema of the endocrine control of the insect moulting must be renewed.