共查询到20条相似文献,搜索用时 0 毫秒
1.
2.
3.
4.
5.
I. W. B. Grant W. Blyth Violet E. Wardrop R. M. Gordon J. C. G. Pearson A. Mair 《BMJ (Clinical research ed.)》1972,1(5799):530
In a survey of the farming population of Orkney, Ayrshire, and East Lothian the prevalence of farmer''s lung was estimated at 86 per 1,000 in both Orkney and Ayrshire and 23 per 1,000 in East Lothian. If cases with a negative farmer''s lung hay (F.L.H.) precipitin test are excluded these figures are reduced to 43, 36, and nil respectively, but those for Orkney and Ayrshire are still about 20 times higher than any figure previously reported for the prevalence of farmer''s lung in Britain.Regional variations in prevalence are probably related both to climatic conditions and to differences in agricultural methods, the latter often being dictated by economic circumstances. Nevertheless the prevalence of farmer''s lung could be reduced considerably by the energetic application of preventive measures, backed by financial incentives. The most important of these are efficient drying of hay and cereals before storage, more extensive use of silage, better ventilation of farm buildings, and the introduction of mechanical feeding systems. Individual farmworkers could be taught how to recognize the early symptoms of the disease and encouraged to wear respirators when handling mouldy fodder. 相似文献
6.
Immunofluorescence Identification of Thermopolyspora polyspora, the Causative Agent of Farmer's Lung 下载免费PDF全文
《Applied microbiology》1969,18(1):136
[This corrects the article on p. 454 in vol. 17.]. 相似文献
7.
Robert L. Gray Frederick J. Wenzel Dean A. Emanuel 《Applied and environmental microbiology》1969,17(3):454-456
Farmer''s lung is a serious disabling pulmonary disease found in agricultural workers. The disease is believed to be a hypersensitivity to the thermophilic actinomycetes, principally Thermopolyspora polyspora. This organism is difficult to stain with the usual bacteriological stains and thus far has not been demonstrated in the lung tissue by microscopic methods. In this paper, it is demonstrated that the fluorescent-antibody technique is a simple method for the positive identification of T. polyspora. The technique can also be used as a rapid screening test for the detection of antibodies to T. polyspora in the patient''s serum. In addition, it opens up the possibility of the identification of T. polyspora in the lung tissue of patients with farmer''s lung and makes available a means for the study of the immunological reaction in the lung parenchyma. No false positive or cross-reactions with Thermoactinomyces vulgaris or Streptomyces griseus could be demonstrated. 相似文献
8.
9.
10.
11.
12.
13.
14.
Summary Two combinatorial libraries of 1296 compounds each were synthesized from two sets of carboxylic acid building blocks and two diamino acid scaffolds. The library was designed to produce low-molecular-weight compounds in a soluble form, to be assayed as potential ligands for peptidergic receptors. 相似文献
15.
North winds and production in the eastern North Atlantic 总被引:9,自引:0,他引:9
Dickson R.R.; Kelly P.M.; Colebrook J.M.; Wooster W.S.; Cushing D.H. 《Journal of plankton research》1988,10(1):151-169
A long-term increase in northerly wind componentl over the easternNorth Atlantic and European Seaboard between 1950 and 1980 isassociated both with a decline of phytoplankton and zooplanktonbiomass in sea-areas around the British Isles, and with an increasein upwelling intensity along the Iberian west coast. The implicationsfor certain pelagic fish stocks in the area are assessed. 相似文献
16.
《Plains anthropologist》2013,58(18):232-236
AbstractBasic data are offered on 2 pottery bearing localities in the Souris Basin, North Dakota. Additional data from adjacent areas are introduced to support the assertion that there was a relatively heavy occupation of the Northern Plains by a number of closely related groups which manufactured only slightly differentiated cordroughened pottery. The presence of this pottery reveals that the Woodland occupation of the Northern Plains was far more intensive and extensive than might be suspected from the extant literature. 相似文献
17.
In laboratory experiments, bacterioplankton were incubated under different nutrient conditions, and the percentage of bacteria
exhibiting a polysaccharidic capsule (capsulated bacteria) and that of CTC (cyanotetrazolium chloride)-positive and therefore
metabolically highly active bacteria were determined. In these seawater cultures amended with nutrients more than 95% of the
CTC-positive cells exhibited a capsule. During two cruises, one to the North Atlantic and one to the North Sea, we investigated
the distribution of capsulated bacteria throughout the water column. Capsulated bacteria were generally more abundant in eutrophic
surface waters than in deeper layers or more oligotrophic regions. In the upper 100 m of the North Atlantic, about 6–14% of
the total bacterioplankton community was capsulated, while in the layers below 100 m depth, 97% of the bacteria lacked a visible
capsule. The percentage of capsulated bacteria correlated with bacterial abundance and production, and chlorophyll a concentration.
Also, the bioavailability of DOC (dissolved organic carbon), estimated by the ratio between bacterial production and DOC concentration,
significantly correlated with the percentage of capsulated bacteria. In the North Sea, the contribution of capsulated bacteria
to the total number of bacteria decreased from the surface (3 m depth) to the near-bottom (25–35 m) layers from 20% to 14%
capsulated bacteria. In the nearshore area of the North Sea, about 27% of the bacteria exhibited a capsule. Overall, a pronounced
decrease in the contribution of capsulated bacteria to the total bacterial abundance was detectable from the eutrophic coastal
environment to the open North Atlantic. Using this epifluorescence-based technique to enumerate capsulated bacterioplankton
thus allowed us to routinely assess the number of capsulated bacteria even in the oceanic water column. Based on the data
obtained in this study we conclude that almost all metabolically highly active bacteria exhibit a capsule, but also some of
the metabolically less active cells express a polysaccharide capsule detectable with this method. 相似文献
18.
Regional lung function was measured, using radioactive xenon-133, in a group of normal subjects and in three carefully defined groups of patients with obstructive lung disease. When compared with the normal subjects, patients in the emphysematous group showed a relative reduction of ventilation and perfusion to the upper zones, while patients having chronic bronchitis without cardiac or respiratory failure showed a predominantly lower zone defect. In the group of patients with chronic bronchitis with cardiac and respiratory failure no consistent pattern was found. 相似文献
19.
探寻肺干细胞来源和肺再生原理的动物实验及临床研究均有很大的进展.利用基因选择技术有效的分离、培养出纯化度较高的肺干细胞群;以及肺内原始细胞与生物兼容性较好的组织工程材料共同培养形成类肺泡细胞结构,对肺组织再生的动物实验和临床应用方面起到推进的作用.并且近年来,干细胞参与肺损伤修复的基础实验研究也有了长足的发展.现对肺干细胞与肺再生方面的最新进展做一综述. 相似文献
20.
MS Mulvihill YW Kwon S Lee LT Fang H Choi R Ray HC Kang JH Mao D Jablons IJ Kim 《PloS one》2012,7(8):e42264