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  • 1
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Eine genetische Abstands-Studie von 9 Eingeborenen-Stämmen im nördlichen Australien wurde ausgeführt. Die “B”-Statistik von Balakrishnan u. Sanghvi (1968) wurde angewendet. Die Analyse geht von den Unterschieden aus, die in 8 Blutgruppen, im Serum-Protein und bei den Enzym-systemen demonstriert wurden. Die genetische Abstands-Verwandtchaft wurde mit linguistischen Unterschieden und mit der räumlichen Entfernung, in der die Stämme wohnen, in Beziehung gesetzt.
    Notes: Summary A study of genetic distance has been carried out between 9 Aboriginal tribes in the Northern Territory of Australia. The “B” statistic of Balakrishnan and Sanghvi (1968) was employed and the analysis was based on the variability demonstrated in 8 blood groups, serum protein and enzyme systems. The genetic distance relationships were found to be correlated with linguistic differences amongst the tribes as well as with the geographic distance separating them.
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  • 2
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary 17 examples of genetically controlled variation of LDH have been encountered in a survey of 1331 Indian blood samples collected in Calcutta and Madras. 15 of the variants (10 in Calcutta and 5 in Madras) were identical and have been given the trivial name ‘Calcutta-1’. The other 2 examples were found in Madras and have been called ‘Madras-1’. ‘Calcutta-1’ is an A-subunit variant, whilst ‘Madras-1’ is a B-subunit variant. The overall frequency of LDH variants in India (1.28 per cent) is among the highest reported for any population in the world.
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  • 3
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Blutproben einer Anzahl Dani-sprechender Personen des Pit River-Gebietes in West-Irian wurden auf genetische Varianten in 14 Erythrocytenenzym- und 5 Serumprotein-Systemen untersucht. 4 der Erythrocytenenzym-Systeme waren polymorph: Saure Phosphatase, 6PGD, Adenosindeaminase und Phospho-glucomutase1. Zwei der Serum-protein-Systeme, Haptoglobin und Transferrin, waren polymorph. In den anderen Systemen wurden 3 MDH “New Guinea-1”-Varianten gefunden, ebenso wie 2 Personen mit Varianten, 1 MS und 1 SS, im Pi-System. Eine ungewöhnliche Variante im PGM2-System ist noch nicht ausreichend bestimmt worden. Alle anderen Systeme waren monomorph.
    Notes: Summary Blood samples from a series of Dani speaking persons from Pit River, West Irian have been studied for genetic variants in 14 red cell enzyme and 5 serum protein systems. Four of the red cell enzyme systems were polymorphic: acid phosphatase, 6 phosphogluconate dehydrogenase, adenosine deaminase and phosphoglucomutase (locus 1). Two of the serum protein systems, haptoglobin and transferrin, were polymorphic. In the other systems three MDH “New Guinea-1” variants were detected and two persons with variants, one MS and one SS, in the protease inhibitor system were detected also. An unusual variant in the PGM (locus 2) system has not yet been adequately identified. All other systems were monomorphic.
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  • 4
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung 188 Blutproben des Batak-Stammes von Samosir Island (Sumatra, Indonesien) wurden auf elektrophoretische Varianten des Hämoglobins in 14 Erythrocyten-enzym-und 5 Serumprotein-Systemen untersucht. Die Saure Phosphatase, 6GPD, PGM1 und ADA-Systeme sind polymorph, und eine einzige AK 2-1-Person wurde gefunden. In den Haptoglobin-, Transferrin- und Pi-Systemen treten Polymorphismen auf. Zwei abweichende Allele, Tf Dchi und Tf B, sind im Transferrin-System zu finden, aber die B-Variante ist nicht bestimmt worden. Ebenso wurden 3 Personen mit Ceruloplasmin-Varianten gefunden, doch auch diese Varianten wurden nicht identifiziert. Keine abnormen Hämoglobine wurden gefunden. Alle anderen Systeme wiesen nur normale Phenotypen auf.
    Notes: Summary 188 blood samples from Batak of Samosir Island (Sumatra, Indonesia) have been studied for electrophoretic variants of haemoglobin, 14 red cell enzyme and 5 serum protein systems. The acid phosphatase, 6 PGD, PGM1 and ADA enzyme systems are polymorphic, and a single AK 2-1 person was detected. Polymorphism is present in the haptoglobin, transferrin and protease inhibitor systems. Two variant alleles, Tf Dchi and Tf B are present in the transferrin system, but the B variant has not been identified. Similarly, 3 persons with caeruloplasmin variants were found, but also these variants have not been identified. No abnormal haemoglobins were detected. All other systems revealed the presence of only normal phenotypes.
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  • 5
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Es werden 6 neue PGD-Allele beschrieben. 2 davon (PGD Wantoat und PGD Canberra) sind Kontrollproteine, die elektrophoretisch langsam sind. Die 4 übrigen kontrollieren schnelle Variaten. Die Heterozygote PGD A/PGD Wantoat und PGD A/PGD Canberra zeigen einen ähnlichen Abstand der Banden bei Stärkegelelektrophoresis, jedoch sind die relativen Intensitäten der Streifen in beiden Mustern verschieden. Von den 4 schnellen Allelvarianten kontrolliert PGD Kadar ein Genprodukt mit schnellster Mobilität; PGD Caspian wirkt etwas langsamer, und sowohl PGD Bombay als auch PGD Natal zeigen eine ähnliche Wandlungsgeschwindigkeit, obwohl sie unter Behandlung mit 2-Mercaptoethanol verschieden reagieren. Nach Behandlung mit diesem Reagens werden Muster mit PGD Natal wieder normal. Keine der anderen Genprodukte, der PGD-Allele, die hier geprüft werden, werden durch Behandlung mit 2-Mercaptoethanol beeinflußt. PGD Kadar stellte sich in der Kadar-Sippenbevölkerung Südindiens als polymorph heraus. 3 ausgeprägte neue Muster wurden in dieser Bevölkerung entdeckt, nämlich: der Homozygote PGD Kadar/PGD Kadar, der Heterozygote PGD A/PGD Kadar und der Heterozygote PGD C/PGD Kadar.
    Notes: Summary 6 new PGD alleles are described. 2 of these (PGD Wantoat and PGD Canberra) control proteins that are electrophoretically slow: the other 4 control fast variants. The heterozygotes PGD A/PGD Wantoat and PGD A/PGD Canberra give similar band spacing after starch gel electrophoresis, but the relative intensities of the bands in the 2 patterns is different. Of the 4 fast variant alleles PGD Kadar controls a gene product with fastest mobility, PGD Caspian is slightly slower, whilst PGD Bombay and PGD Natal are similar in the mobility of their gene products, but differ in their reaction to treatment with 2-mercaptoethanol. After treatment with this reagent patterns involving PGD Natal revert to normal. None of the other gene products of the PGD alleles tested are affected by treatment with 2-mercaptoethanol. PGD Kadar was found to be polymorphic in the tribal Kadar population of south India. 3 distinctive new patterns were found in this population representing the homozygote PGD Kadar/PGD Kadar, the heterozygote PGD A/PGD Kadar and the heterozygote PGD C/PGD Kadar.
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  • 6
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary A total of 345 haemolysates previously phenotyped by starch gel electrophoresis and known to contain the products of the PGM 1 3 , PGM 1 6 , and PGM 1 7 alleles have been analyzed by thin layer polyacrylamide gel isoelectric focussing in the pH range 5–7. Two common subtypes, 3+and 3-, of the PGM 1 3 allele have been found in a number of Pacific populations. A single form of the PGM 1 7 allele was observed in the Western Caroline Islands. In contrast, one of two Indian PGM17 variants focussed to a different position when compared with the form found at polymorphic frequency in the Western Caroline Islands. Only one type of the PGM 1 6 allele was detected during the present investigation.
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  • 7
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Since the last report numerous new DBP (Gc) variants have been observed; at present a total of 84 different mutants can be distinguished. Several of them have similar electrophoretic mobilities and/or isoelectric points by conventional isoelectric focusing (IEF). IEF in polyacrylamide gels in the presence of 3 M urea is a convenient and effecient method for the detection of hidden variation.
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  • 8
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary 10 cases of an S-MDH variant have been detected in New Guinea. 3 cases were found among 199 samples from the Fore linguistic group and 6 cases among 9 related members of a family from the Agarabi linguistic group, both groups being located in the Eastern Highlands. 1 case was found in 24 samples from the Sepik district. The new variant has been given the trivial name S-MDH “New Guinea-1”.
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  • 9
    ISSN: 1432-1203
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Isoelectric focussing (IEF) in thin layer polyacrylamide gels pH range 4–6.5 has been used to analyse the GC phenotypes of 4233 individuals from 28 different population groups in the Asian, Pacific, and Australian area. Because this technique reveals subtypes of the common GC * 1 allele, there is almost a two-fold increase in the mean heterozygosity at the GC locus using IEF compared with conventional electrophoresis. The highest frequency (above 50%) of the GC * 1S allele was encountered in Indian populations, reflecting genetic affinities with European. By comparison, east and south east Asians are unique having maximum values of the GC * 1F allele (50%). With the exception of a few Pacific populations which show similar frequencies to east Asians, all other groups in the Pacific area, including Australia, have values of GC * 1F similar to GC * 1S ranging from 27% to 40%. The GC * 2 frequency in most populations varies from 20% to 30%. However, some Polynesian groups have values up to 40% and Australian Aborigines less than 10%. Among other alleles, GC * 1A1 is found to be widely distributed among Australian Aborigines and Melanesians and occurs sporadically in Polynesians, Micronesians, and in the Lesser Sunda Islands. Four new alleles, GC * 1C24, GC * 1C35 Aborigine, GC * 1A21, and GC * 1A22 are described. The gene frequency data at the GC locus has been used to calculate Nei genetic distances between the populations studied.
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  • 10
    Publication Date: 2018-06-11
    Description: The first five Titan flybys with Cassini's Synthetic Aperture RADAR (SAR) and radiometer are examined with emphasis on the calibration and interpretation of the high-resolution radiometry data acquired during the SAR mode (SAR-radiometry). Maps of the 2-cm wavelength brightness temperature are obtained coincident with the SAR swath imaging, with spatial resolution approaching 6 km. A preliminary calibration shows that brightness temperature in these maps varies from 64 to 89 K. Surface features and physical properties derived from the SAR-radiometry maps and SAR imaging are strongly correlated; in general, we find that surface features with high radar reflectivity are associated with radiometrically cold regions, while surface features with low radar reflectivity correlate with radiometrically warm regions. We examined scatterplots of the normalized radar cross-section sigma(exp o) versus brightness temperature, finding differing signatures that characterize various terrains and surface features. Implications for the physical and compositional properties of these features are discussed. The results indicate that volume scattering is important in many areas of Titan's surface, particularly Xanadu, while other areas exhibit complex brightness temperature variations consistent with variable slopes or surface material and compositional properties.
    Keywords: Communications and Radar
    Type: Icarus; Volume 191; No. 1; 211-222
    Format: text
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