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  • Artikel: DFG Deutsche Nationallizenzen  (6)
  • Atmospheric CO2 sink  (2)
  • Molecular marker  (2)
  • Reimplantation  (2)
  • 1
    Digitale Medien
    Digitale Medien
    Contribution of carbonate rock weathering to the atmospheric CO2 sink (2000)
    Springer
    Environmental geology 39 (2000), S. 1053-1058 
    Details
    ISSN: 1432-0495
    Schlagwort(e): Key words Carbonate rock weathering ; Soil CO2 ; Atmospheric CO2 sink
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie
    Notizen: Abstract To accurately predict future CO2 levels in the atmosphere, which is crucial in predicting global climate change, the sources and sinks of the atmospheric CO2 and their change over time must be determined. In this paper, some typical cases are examined using published and unpublished data. Firstly, the sensitivity of carbonate rock weathering (including the effects by both dissolution and reprecipitation of carbonate) to the change of soil CO2 and runoff will be discussed, and then the net amount of CO2 removed from the atmosphere in the carbonate rock areas of mainland China and the world will be determined by the hydrochem-discharge and carbonate-rock-tablet methods, to obtain an estimate of the contribution of carbonate rock weathering to the atmospheric CO2 sink. These contributions are about 0.018 billion metric tons of carbon/a and 0.11 billion metric tons of carbon/a for China and the world, respectively. Further, by the DBL (Diffusion Boundary Layer)-model calculation, the potential CO2 sink by carbonate rock dissolution is estimated to be 0.41 billion metric tons of carbon/a for the world. Therefore, the potential CO2 source by carbonate reprecipitation is 0.3 billion metric tons of carbon/a.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002549900072
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  • 2
    Digitale Medien
    Digitale Medien
    Further study on the vascular basis for the reimplantation of the hand amputated through the palm (1995)
    Springer
    Surgical and radiologic anatomy 17 (1995), S. 47-52 
    Details
    ISSN: 1279-8517
    Schlagwort(e): Palm of the hand ; Blood supply ; Blood vessel ; Reimplantation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Résumé Sur la base de données anatomiques obtenues lors de précédents travaux sur l'anatomie vasculaire de la main, l'architecture vasculaire palmaire a été étudiée sur 60 extrémités supérieures de cadavres d'adultes, non embaumés. Chaque paume a été divisée en 64 carrés par 8 sections sagittales et 8 sections transversales. L'architecture vasculaire à l'intérieur des carrés et les relations artérielles entre eux ont été étudiées et mesurées par angiographie, dissection au microscope opérateur et reconstruction computérisée en 3D. Les paumes amputées ont été regroupées en 4 types d'après la distribution des vaisseaux sanguins. Les données anatomiques concernant les anastomoses vasculaires sont précisées. Il existe trois zones clés pour l'irrigation de la paume. Leur importance quant à l'irrigation de la main est exposée. Outre la division des paumes amputées transversalement en 4 types, le programme de réparation de vaisseaux dans les 4 types d'amputations obliques communes de la paume et aussi discuté.
    Notizen: Summary Based on the anatomic data obtained from earlier studies on the vascular anatomy of the hand, the vascular architecture in the palm of the hand was studied on 60 sides of unembalmed adult upper extremities. Each palm was divided into 64 squares by 8 sagittal and 8 transverse sections. The vascular architecture in these squares and the arterial relations between them were observed and measured by angiography, operative microscopic dissection and computerised three-dimensional reconstruction. According to the pattern of the blood-vessels, the amputated palms can be classified into 4 types. The anatomic basis for the vascular anastomosis in each type is defined. There are three key-areas for the blood-supply of the palm and their significance is discussed. Apart from the 4 types of transversely amputated palms, the repair programe of the blood-vessles in 4 types of common obliquely amputated palms are also discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01629499
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  • 3
    Digitale Medien
    Digitale Medien
    Special speleothems in cement-grouting tunnels and their implications of the atmospheric CO2 sink (1998)
    Springer
    Environmental geology 35 (1998), S. 258-262 
    Details
    ISSN: 1432-0495
    Schlagwort(e): Key words Speleothem ; Cement grouting ; Atmospheric CO2 sink
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Geologie und Paläontologie
    Notizen: Abstract  Based on the analyses and comparisons of water chemistry, stable carbon isotopes and deposition rates of speleothems, the authors found that there are two kinds of speleothems in the tunnels at the Wujiangdu Dam site, Guizhou, China, namely the CO2-outgassing type and the CO2-absorbing type. The former is natural, as observed in general karst caves, and the product of karst processes under natural conditions. The latter, however, is special, resulting from the carbonation of a cement-grouting curtain and concrete. Due to the quick absorption of CO2 from the surrounding atmosphere, evidenced by the low CO2 content in the air and the high deposition rate of speleothems (as high as 10 cm/a) in the tunnels, the contribution of the carbonation process to the sink of CO2 in the atmosphere is important (in the order of magnitude of 108 tons c/a) and should be taken into consideration in the study of the global carbon cycle because of the use of cement on a worldwide scale.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/s002540050312
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  • 4
    Digitale Medien
    Digitale Medien
    Basic vascular anatomy and the reimplantation of the amputated hand through the palm (1990)
    Springer
    Surgical and radiologic anatomy 12 (1990), S. 241-246 
    Details
    ISSN: 1279-8517
    Schlagwort(e): Palm of the hand ; Blood supply ; Blood vessels ; Reimplantation
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Medizin
    Beschreibung / Inhaltsverzeichnis: Résumé Trente membres supérieurs de sujets adultes ont été étudiés. Les vaisseaux sanguins de la main ont été analysés sur des angiographies, des coupes anatomiques et des dissections sous microscope. Les artères de la paume sont disposées en trois plans dans la partie moyenne, alors que dans les segments sous-jacents, elles sont disposées en deux plans seulement. La disposition des territoires dépendant des aa. radiale et ulnaire n'est pas la même dans chaque plan. Il existe trois voies anastomotiques entre les aa. radiale et ulnaire dans le sens paume-dos de la main. Les possibilités de réimplantation après amputation transpalmaire ont été envisagées grâce à l'étude dynamique de la circulation, à des coupes et à l'analyse des anastomoses artérielles entre ces trois plans.
    Notizen: Summary Thirty adult upper extremities were used to study the blood vessels of the hand by angiography, cross-sectional measurement and operative microscopic dissection. The arteries in the middle segment of the palm are arranged in three planes, while in the upper or lower segment there are two planes only. The division of the territories of the radial and ulnar arteries are not same in the three different layers. There are three main anastomotic pathways between the radial and ulnar arteries in the radial-ulnar direction, while in the palmar-dorsal direction there are three anastomotic zones between the palmar and dorsal planes. According to the rate of appearance, sources, cross-sectional area, irrigation territories and anastomoses of the arteries in the three segments, the clinical significance in the reimplantation of the amputated hand through the palm has been discussed.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF01623697
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  • 5
    Digitale Medien
    Digitale Medien
    Characterization and analysis of simple sequence repeat (SSR) loci in seashore paspalum (Paspalum vaginatum Swartz) (1995)
    Springer
    Theoretical and applied genetics 91 (1995), S. 47-52 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Simple sequence repeats ; Microsatellite ; Molecular marker ; Seashore paspalum ; Germ plasm
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract A size-fractionated TaqI genomic library of seashore paspalum (Paspalum vaginatum Swartz) was screened for the presence of (GA) n and (CA) n simple sequence repeats (SSRs). A total of 54 clones with a positive signal were detected among 13,000 clones screened. Forty-seven clones having repeats of n⩾ 3 were identified, of which 85% were perfect, 13% were imperfect and 2% were compound repeat sequences. Five of ten primer pairs synthesized to amplify selected loci resulted in a product in the expected size range and were subsequently used to examine SSR polymorphisms among 46 ecotypes of P. vaginatum. The number of alleles resolved on agarose or polyacrylamide gels were similar and ranged from 6 to 16 with an average of 14 per locus. Phenetic analysis of SSR polymorphisms revealed genetic relationships among the P. vaginatum ecotypes that were in general agreement with relationships determined previously by RAPD analysis of the same plant materials. Further screening of the genomic library did not identify (AT) n , trimeric or tetrameric repeats. Hybridization of an (ATT)8 oligonucleotide probe to genomic DNA isolated from I. batatas, E. coli, Citrullis lanatus and P. vaginatum suggested that the P. vaginatum genome contained significantly fewer ATT repeats than either the I. batatas or C. lanatus genome.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00220857
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  • 6
    Digitale Medien
    Digitale Medien
    Development of simple sequence repeat DNA markers and their integration into a barley linkage map (1996)
    Springer
    Theoretical and applied genetics 93 (1996), S. 869-876 
    Details
    ISSN: 1432-2242
    Schlagwort(e): Microsatellites ; Hordeum vulgare ; Molecular marker ; Linkage map
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie
    Notizen: Abstract Simple sequence repeats (SSRs), or microsatellites, are a new class of PCR-based DNA markers for genetic mapping. The objectives of the present study were to develop SSR markers for barley and to integrate them into an existing barley linkage map. DNA sequences containing SSRs were isolated from a barley genomic library and from public databases. It is estimated that the barley genome contains one (GA)n repeat every 330 kb and one (CA)n repeat every 620 kb. A total of 45 SSRs were identified and mapped to seven barley chromosomes using doubled-haploid lines and/or wheat-barley addition-line assays. Segregation analysis for 39 of these SSRs identified 40 loci. These 40 markers were placed on a barley linkage map with respect to 160 restriction fragment length polymorphism (RFLP) and other markers. The results of this study demonstrate the value of SSRs as markers in genetic studies and breeding research in barley.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00224088
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