Paralytic myoglobinuria in young cattle     

H Christl 《DTW. Deutsche tier?rztliche Wochenschrift》1971,78(7):204-207

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A pharyngolaryngitis of unknown etiology in swine     

H Christl 《DTW. Deutsche tier?rztliche Wochenschrift》1972,79(16):398-400

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Clinical and pathologic-anatomical observations on weak and starving piglets with congenital heart anomalies     

H Christl 《Berliner und Münchener tier?rztliche Wochenschrift》1970,83(24):480-485

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Dysontogenetic liver neoplasms in new-born animals     

H Christl 《Berliner und Münchener tier?rztliche Wochenschrift》1971,84(18):354-355

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Thrombosis of the vena jugularis and the right heart atrium in a cow     

H Christl 《Berliner und Münchener tier?rztliche Wochenschrift》1970,83(11):210-212

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Die Schädelbasis in der vergleichenden Anatomie der Säugetiere bis zum Menschen     

E. Christl Dingler 《Anatomia, histologia, embryologia》1974,3(1):1-28

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Chemical heterogeneity of humic substances: characterization of size fractions obtained by hollow-fibre ultrafiltration   总被引：7，自引：0，他引：7  

I. Christl  H. Knicker  I. Kögel-Knabner  & R. Kretzschmar 《European Journal of Soil Science》2000,51(4):617-625

To investigate the chemical heterogeneity of humic substances in relation to molecular size, fulvic and humic acids were extracted and purified from the surface horizon of a Humic Gleysol in northern Switzerland. A fractionation scheme using hollow‐fibre ultrafiltration cartridges was developed and used to obtain four size fractions of the humic acid with nominal molecular weight ranges > 300 kDa, 100–300 kDa, 30–100 kDa, and 10–30 kDa. The fulvic acid and all humic acid fractions were characterized by size exclusion chromatography, elemental analysis (C, H, N, S), as well as spectroscopic techniques including UV‐VIS, CP‐MAS ¹³C‐NMR, FT‐IR, and fluorescence spectroscopy. Clear chemical differences between the humic acid size fractions were observed. Smaller size fractions of the soil humic acid contained more chargeable functional groups and a larger percentage of aromatic carbon than the larger size fractions. Conversely, the percentage of aliphatic carbon increased with increasing apparent molecular weight. The chemical composition of the smallest humic acid fraction differed clearly from the fulvic acid fraction, despite similar apparent molecular size and carboxyl carbon content. Small humic acids contained much more aromatic carbon and less aliphatic carbon than the fulvic acid fraction. Apparently, humic size fractions differ in their chemical composition, which can have important implications for their environmental behaviour.  相似文献   

Intestinal rupture in a mare following massive infestation with Anaplocephala perfoliata     

H Christl 《Berliner und Münchener tier?rztliche Wochenschrift》1971,84(16):305-307

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Tracing erosion rates in loess landscape of the Trzebnica Hills (Poland) over time using fallout and cosmogenic nuclides     

Loba  Aleksandra  Waroszewski  Jarosław  Tikhomirov  Dmitry  Calitri  Fancesca  Christl  Marcus  Sykuła  Marcin  Egli  Markus 《Journal of Soils and Sediments》2021,21(8):2952-2968

Journal of Soils and Sediments - Loess landscapes are highly susceptible to soil erosion, which affects soil stability and productivity. Erosion is non-linear in time and space and determines...  相似文献   

Public health. Public health risk from the avian H5N1 influenza epidemic     

Ferguson NM  Fraser C  Donnelly CA  Ghani AC  Anderson RM 《Science (New York, N.Y.)》2004,304(5673):968-969

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