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  • Springer  (11)
  • 1990-1994  (10)
  • 1960-1964  (1)
  • 1
    Electronic Resource
    Electronic Resource
    1H-NMR and electrochemical studies on ligated iron(III)perchlorates in acetonitrile-d 3 (1992)
    Springer
    Monatshefte für Chemie 123 (1992), S. 203-209 
    Details
    ISSN: 1434-4475
    Keywords: Half-wave potentials ; Iron(III) complexes ; Ligand exchange
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es wurden die Halbwellenpotentiale,E 1/2, von Fe(Ligand) 6 3+ als ClO 4 − Salz [Ligand=N,N-dimethylformamid (dmf), Acetamid (aa), N,N-dimethylacetamid (dma), Trimethylphosphat (tmp), Dimethylsulfoxid (dmso) und Acetonitril (MeCN)] bestimmt. Zwischen denE 1/2-Werten und den Gutmann Donor Zahlen der Liganden (eine Größe, welche die Lewis Basizität in quantitativer Weise ausdrückt) wurde ein linearer Zusammenhang gefunden. Der Ligandenaustausch an Fe(Ligand) 6 3+ in Acetonitril-d 3 wurde mittels1H-NMR Spektroskopie bei 20°C untersucht. Eine mittlere Koordinationszahl,n coord, wurde bestimmt.n coord nimmt mit der Donizität der Liganden zu, d.h.tmp〈dmf〈dmso.
    Notes: Summary Half-wave potentials,E 1/2, of Fe(ligand) 6 3+/2+ , as ClO 4 − salt, [ligand=N,N-dimethylformamide (dmf), acetamide (aa), N,N-dimethylacetamide (dma), trimethylphosphate (tmp), dimethylsulfoxide (dmso), and acetonitrile (MeCN) are given. A linear correlation betweenE 1/2 and Gutmann's donor numbers of the ligands, a parameter which expresses quantitatively the Lewis donor properties towards hard acceptors, was found. Ligand replacement on Fe(ligand) 6 3+ in acetonitrile-d 3 was studied by means of1H-NMR spectroscopy at 20°C. An average number of ligands coordinated to Fe3+,n coord, is given.n coord increases with the ligand's donor strength; i.e.tmp〈dmf〈dmso.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00810466
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  • 2
    Electronic Resource
    Electronic Resource
    Improved carrier detection of haemophilia A using novel RFLPs at the DXS115 (767) locus (1990)
    Springer
    Human genetics 〈Berlin〉 85 (1990), S. 315-318 
    Details
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Two novel restriction fragment length polymorphisms (RFLPs) around the DXS115 (767) locus, detectable with the restriction enzymes MspI, are described. Since DXS115 is closely linked to the factor VIII gene (F8C), the MspI RFLP was employed in haemophilia A carrier detection. The utility of these RFLPs lies in the increased applicability and accuracy of diagnoses carried out in cases where available intragenic markers are uninformative.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00206753
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  • 3
    Electronic Resource
    Electronic Resource
    Is technology transfer to subsistence farmers doubling nothing? (1990)
    Springer
    The journal of technology transfer 15 (1990), S. 45-48 
    Details
    ISSN: 1573-7047
    Source: Springer Online Journal Archives 1860-2000
    Topics: Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02371523
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  • 4
    Electronic Resource
    Electronic Resource
    Geographical variation of some taxonomically important characters in fishes: the case of the bitterlingRhodeus sericeus (1994)
    Springer
    Environmental biology of fishes 41 (1994), S. 147-170 
    Details
    ISSN: 1573-5133
    Keywords: Meristic characters ; Clines ; Geographical coordinates ; Altitude ; Temperature ; Fish size ; Subspecies ; Bergmann's rule ; Ostariophysi ; Cyprinidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis Geographical variation of three meristic characters, the number of pored scales in lateral line (LL), the number of branchial spines on the first gill arch (SPBR) and the number of transverse scale rows (SQU), were studied in the cyprinid fishRhodeus sericeus and their validity for subspecific discrimination was tested. Counts investigated were taken from population samples at 23 localities covering an area of about 68° geographical longitude (2°40 W – 49°30 E and 128°00 E – 143°00 E), and about 15° geographical latitude (37°30 N – 52°00 N). All three characters manifested a distinct clinal variation. LL, SQU and SPBR closely followed the species' essentially longitudinal distribution. The number of segments was also related to latitude, elevation, mean annual air temperature and fish size. Bergmann's rule was fully demonstrated for fishes and at the species level. Local regional differences were found within particular regions, indicating the existence ofsubclines. Variation of truly isolated populations seems to be predictable and dependent on the clines found in adjacent populations. None of the counts investigated, including a key character (number of pored scales in LL), can be used to distinguishamarus fromsericeus. Owing to sufficient evidence that meristic and morphometric characters used to distinguish fish subspecies succumb to the clinal variation controlled by various factors, the concept of subspecies and trinomial nomenclature is inefficient, superfluous and misleading, and should be excluded from taxonomy, nomenclature and ecology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00023810
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  • 5
    Electronic Resource
    Electronic Resource
    Technology transfer, the environment, and the third world: Having one's cake and eating it (1992)
    Springer
    The journal of technology transfer 17 (1992), S. 34-39 
    Details
    ISSN: 1573-7047
    Source: Springer Online Journal Archives 1860-2000
    Topics: Technology
    Notes: Abstract With the end of the Cold War, the major trend of the next century will be the development of competitive export economies in third world countries. In this paper, an on-going experiment in Mexico is reported. The experiment features the transfer of technology with a minimum adverse environmental impact. The goal is to develop sustainable integration into global markets by transferring technology that is both cost and quality competitive and environmentally safe. The target group is Mexican subsistence producers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02175819
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  • 6
    Electronic Resource
    Electronic Resource
    Social impact analysis on technology transfer (1993)
    Springer
    The journal of technology transfer 18 (1993), S. 49-54 
    Details
    ISSN: 1573-7047
    Source: Springer Online Journal Archives 1860-2000
    Topics: Technology
    Notes: Abstract As societies and cultures are changed, technology transfer is an integral part of the process of creating a new world order. A primary question is whether technology transfer serves as a force for good or evil. Based on some of the recent history of the United States and the impact oftechnology transfer upon a small group of tribal people in India, this article discusses the need for a social impact analysis approach to ameliorate the negative effects of rapid changes caused by unregulated technology transfer.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02178118
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  • 7
    Electronic Resource
    Electronic Resource
    Fatigue of Sb-Cs photocathodes (1962)
    Springer
    Czechoslovak journal of physics 12 (1962), S. 392-412 
    Details
    ISSN: 1572-9486
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Description / Table of Contents: Abstract Настоящая экспериме нтальная работа изуч ает влияние утомления на свойств а оксидированного сурьмяно-цезиевого ф отокатода Cs3Sb. Для измер ений были изготовлены фот оэлементы специальной констру кции, которые утомлял ись белым светом лампы с вольфр амовым волокном. Исследовал ось влияние утомлени я на ход спектральной чувств ительности, на оптические свойст ва, на значения энерги й активации, на тип проводимости, н а ход вольт-амперных характеристик и на ин тегральную чувствит ельность. В связи с утомлением на блюдалось смещение длинноволн овой границы в сторон у коротких длин волн, снижение чу вствительности во всей спектральной области, изменения в п оглощении, снижение значения по казателя переломления. Максим альные значения энер гий активации, определен ные из измерений электрической прово димости в темноте в за висимости от температуры, не изм енились. У фотокатодов найден а проводимость типаp. Утомление влияло и на ход вольт-амперных характеристик: точка начала подъёма анодн ого тока и точка насыщения под в лиянием утомления сместилис ь к более низким анодн ым напряжениям. Наблюда лась связь утомления фотокатод а с его нагревом в резу льтате поглощения излучени я. В заключении обсуждаются некотор ые вопросы, связанные с механизмом фотоэмис сии этих фотокатодов.
    Notes: Abstract This experimental work deals with the influence of fatigue on the properties of the antimony cesium (Cs3Sb) photocathode sensitized with oxygen. Photocells of special construction were prepared for the measurement and they were fatigued by illuminating them with white light from a tungsten lamp. The effect of fatigue on the spectral response curve, on the optical properties, values of activating energies, type of conductivity, current-voltage curves and integral sensitivity were investigated. In connection with the fatigue a shift of the long wavelength threshold towards shorter wavelengths, a decrease of response in the whole spectral range, changes in absorption and a drop in the value of the refractive index were observed. The maximum values of the activation energies, determined from measurements of the temperature dependence of the dark conductivity did not change. The conductivity of the photocathode was found to be of thep-type. The fatigue had certain effects on the current-voltage curves, the starting point of the anode current and the saturation point showing a certain shift towards lower positive anode voltages with fatigue. The relation between the fatigue and temperature rise of the photocathode due to the absorption of radiation was investigated. Finally some problems related to the mechanism of photoemission from the photocathodes are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01696241
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  • 8
    Electronic Resource
    Electronic Resource
    Geographical variation of some taxonomically important characters in fishes: the case of the bitterlingRhodeus sericeus (1994)
    Springer
    Environmental biology of fishes 41 (1994), S. 147-170 
    Details
    ISSN: 1573-5133
    Keywords: Meristic characters ; Clines ; Geographical coordinates ; Altitude ; Temperature ; Fish size ; Subspecies ; Bergmann's rule ; Ostariophysi ; Cyprinidae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Synopsis Geographical variation of three meristic characters, the number of pored scales in lateral line (LL), the number of branchial spines on the first gill arch (SPBR) and the number of transverse scale rows (SQU), were studied in the cyprinid fishRhodeus sericeus and their validity for subspecific discrimination was tested. Counts investigated were taken from population samples at 23 localities covering an area of about 68° geographical longitude (2°40 W – 49°30 E and 128°00 E – 143°00 E), and about 15° geographical latitude (37°30 N – 52°00 N). All three characters manifested a distinct clinal variation. LL, SQU and SPBR closely followed the species' essentially longitudinal distribution. The number of segments was also related to latitude, elevation, mean annual air temperature and fish size. Bergmann's rule was fully demonstrated for fishes and at the species level. Local regional differences were found within particular regions, indicating the existence ofsubclines. Variation of truly isolated populations seems to be predictable and dependent on the clines found in adjacent populations. None of the counts investigated, including a key character (number of pored scales in LL), can be used to distinguishamarus fromsericeus. Owing to sufficient evidence that meristic and morphometric characters used to distinguish fish subspecies succumb to the clinal variation controlled by various factors, the concept of subspecies and trinomial nomenclature is inefficient, superfluous and misleading, and should be excluded from taxonomy, nomenclature and ecology.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02197842
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  • 9
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    Geographical variation of some taxonomically important characters in fishes: the case of the bitterlingRhodeus sericeus (1994)
    Springer
    Details
    Publication Date: 1994-11-01
    Print ISSN: 0378-1909
    Electronic ISSN: 1573-5133
    Topics: Biology
    Published by Springer
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  • 10
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    Geographical variation of some taxonomically important characters in fishes: the case of the bitterlingRhodeus sericeus (1994)
    Springer
    Details
    Publication Date: 1994-11-01
    Print ISSN: 0378-1909
    Electronic ISSN: 1573-5133
    Topics: Biology
    Published by Springer
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