The pathomorphology and pathogenesis of acute cardiovascular failure in swine. 1. Histopathologic findings in the myocardium of swine of different age groups     

V Bergmann  A Gr?fe 《Archiv fuer experimentelle veterinaermedizin》1990,44(4):503-512

Myocardia were histologically examined for the presence of pathomorphological processes in 143 pigs of varying age groups (one, three, seven to nine, and 24 months). Some of them had been slaughtered in clinically intact condition. Others had died of non-cardial diseases. Numerous alterations were recorded, with the following among them being more suitable than others for quantitative assessment and thus objective appraisal of the myocardium: inflammatory infiltrations, granular or hyaline disintegration of fibres, fibre necrosis, dystrophic calcification of fibres, degenerative fat infiltration, and sarcosporidiosis. These parameters were increasingly detectable along with growing age of animals. Inflammatory infiltrations were among the most common findings from pigs for slaughter, aged seven to nine months (40.4 percent of myocardial samples or 58 percent of hearts), followed by muscle fibre necroses (26.4 or 42.0 percent). Most of these disorders were but slightly manifest and were considered to be indicators of catabolic or reparative processes in the myocardium. Attention should be given to them, whenever it comes to pigs with cardiac or circulatory disturbances.  相似文献   

The pathomorphology and pathogenesis of acute cardiovascular failure in swine. 3. Histopathologic findings in the myocardium of swine with transport-related cardiovascular insufficiency     

V Bergmann  A Gr?fe  H Seifert 《Archiv fuer experimentelle veterinaermedizin》1990,44(4):521-532

Quantitative pathohistological investigations were performed on 300 samples of five different myocardial regions from 50 pigs with had suffered stress-related myocardial insufficiency on their transport to the slaughterhouse (transport exhaustion). The findings were compared to 1,200 myocardial samples from 200 clinically intact pigs for slaughter. Animals with transport-related damage exhibited with significance more and more severe inflammatory and degenerative myocardial alterations, such as round-cell infiltration, fiber necrosis, calcification, and fat infiltration. Many of these lesions had been manifest already prior to transport. Myocardially predamaged pigs were less capable than others of sustaining transport stress and were more predisposed to cardiac failure. Stress-related cardiovascular insufficiency, consequently, depended not only on direct stress but also on the general health condition of the myocardium. Causes and pathogenetic relevance of these alterations are discussed in some detail.  相似文献   

Resource Mobilisation and Obstacles To Development in Indian Farming     

T. Bergmann 《Asia Pacific viewpoint》1973,14(1):1-22

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Synthesis of the sednet work package 5 outcomes     

Susanne Heise  Sabine E. Apitz  Marc Babut  Helge Bergmann  Piet den Besten  Gerald J. Ellen  Jan Joziasse  Alexandra Katsiri  Vera Maaß  Amy Oen  Adriaan Slob  Sue White 《Journal of Soils and Sediments》2004,4(4):233-235

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SYNTHESIS AND DEGRADATION OF PROTEINS IN THE LABORATORY AND IN METABOLISM     

Bergmann M 《Science (New York, N.Y.)》1934,79(2055):439-445

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A bank of Mammalian DNA fragments     

Bergmann FH 《Science (New York, N.Y.)》1976,194(4271):1226

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The structure of the first coordination shell in liquid water   总被引：1，自引：0，他引：1  

Wernet P  Nordlund D  Bergmann U  Cavalleri M  Odelius M  Ogasawara H  Näslund LA  Hirsch TK  Ojamäe L  Glatzel P  Pettersson LG  Nilsson A 《Science (New York, N.Y.)》2004,304(5673):995-999

X-ray absorption spectroscopy and x-ray Raman scattering were used to probe the molecular arrangement in the first coordination shell of liquid water. The local structure is characterized by comparison with bulk and surface of ordinary hexagonal ice Ih and with calculated spectra. Most molecules in liquid water are in two hydrogen-bonded configurations with one strong donor and one strong acceptor hydrogen bond in contrast to the four hydrogen-bonded tetrahedral structure in ice. Upon heating from 25 degrees C to 90 degrees C, 5 to 10% of the molecules change from tetrahedral environments to two hydrogen-bonded configurations. Our findings are consistent with neutron and x-ray diffraction data, and combining the results sets a strong limit for possible local structure distributions in liquid water. Serious discrepancies with structures based on current molecular dynamics simulations are observed.  相似文献   

CORAL-REEFS AND THE FORMATION OF PETROLEUM     

Bergmann W  Lester D 《Science (New York, N.Y.)》1940,92(2394):452-453

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Der Gehalt einiger Purin- und Pyrimidin-Verbindungen und Nukleinsäuren in Blättern von Gerste-Pflanzen verschiedener Sorten in Abhängigkeit vom Alter der Pflanzen     

Harry Bergmann 《Genetic Resources and Crop Evolution》1972,20(1):327-349

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Growth responses and foliar sensitivities of native herbaceous species to ozone exposures     

E. Bergmann  J. Bender  H. J. Weigel 《Water, air, and soil pollution》1995,85(3):1437-1442

This paper reports on open-top chamber studies investigating the effects of different O₃ exposures on native herbaceous plant species. Plants were grown up from seeds, potted into natural soils and exposed to near-ambient O₃ levels during one growing season. A wide range of visible symptoms was apparent during the exposures. Species such as Rumex obtusifolius, Senecio vulgaris or Sonchus asper showed leaf colorations (e.g. reddish pigmentation) that probably indicate a non-specific stress response. In other species especially of the genera Malva and Cirsium the symptoms produced by O₃ appeared to be similar to those characteristic for O₃-specific foliar injury (stippling, flecking). In almost all species tested, O₃ caused premature leaf senescence, which was sometimes associated with premature leaf abscission. However, earlier senescence did not necessarily result in changes in plant growth. Of all species tested, Malva sylvestris was found to be the most sensitive in terms of growth reduction and lower seed production.  相似文献