The distribution of tsetse (Diptera: Glossinidae) and bovine trypanosomosis in the Matutuine District, Maputo Province, Mozambique     

Sigauque I  Van den Bossche P  Moiana M  Jamal S  Neves L 《The Onderstepoort journal of veterinary research》2000,67(3):167-172

A tsetse and bovine trypanosomosis survey was conducted during 1998 and 1999 in the Matutuine District of Maputo Province (Mozambique). A total of 59 Glossina brevipalpis and 17 Glossina austeni were captured throughout the district. Survey results suggest that Glossina brevipalpis is mainly concentrated in dense vegetation along the Maputo River and in the wetlands east of the river. G. austeni, on the other hand, was captured mainly in dense thickets in drier areas. Both tsetse species are suspected to be vectors of bovine trypanosomosis. Bovine trypanosomosis (75,5% Trypanosoma congolense) was diagnosed in 53 animals (13,9%) from seven sampling sites distributed throughout the district. The prevalence of cattle with anti-trypanosomal antibodies was high (29,9%).The incidence of trypanosomal infections in sentinel cattle was also high. The widespread distribution of bovine trypanosomosis and the high prevalence of infection are likely to have a significant impact on cattle production and, hence, the cattle restocking exercise in the district.  相似文献   

Een virusziekte in lupinen     

Dina Spierenburg 《European journal of plant pathology / European Foundation for Plant Pathology》1936,42(11):71-76

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Acquired resistance to the 16-membered macrolides tylosin and tilmicosin by Mycoplasma bovis     

Uri Lerner  Eytan Amram  Roger D. Ayling  Inna Mikula  Irena Gerchman  Shimon Harrus  Dina Teff  David Yogev  Inna Lysnyansky 《Veterinary microbiology》2014,168(2-4):365-371

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Kool: Rotstronken,stipple- en randjeskool     

Dina Spierenburg 《European journal of plant pathology / European Foundation for Plant Pathology》1924,30(9):229-240

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Relative efficiency,ureide transport and harvest index in soybeans inoculated with isogenic HUP mutants of Bradyrhizobium japonicum     

M. Hungria  M. C. P. Neves  J. Döbereiner 《Biology and Fertility of Soils》1989,7(4):325-329

Summary Differences between isogenic uptake hydrogenase (HUP) mutants of Bradyrhizobium japonicum in terms of nodule efficiency, N₂ fixation and N incorporation into various plant parts were studied in a monoxenic greenhouse experiment in order to confirm previous results with soybeans and beans inoculated with various HUP⁺ and HUP^– strains. The HUP+ revertant PJ17-1 of a HUP^– mutant (PJ17) of strain USDA DES 122 showed a completely restored relative efficiency (100% versus 78±2% for the HUP^– mutant), higher nodule efficiency (N₂ fixed per g nodules), higher ureide-N transport rates, higher N contents in pods and higher N harvest indices. All these observations confirm previous experiments with HUP⁺ and HUP^– strains.  相似文献   

Diversity in tree species in Southeastern Ohio Betula nigra L. Communities     

Larry D. Cribben  Dina D. Scacchetti 《Water, air, and soil pollution》1977,8(1):47-55

Quantitative data were obtained for arboreal species within 50 lowland forests in southeastern Ohio. Thirty-seven communities were dominated by Betula nigra L. and 13 were dominated by Acer saccharinum L. The acidic soils collected from B. nigra communities contained toxic concentrations of exchangeable Al and low concentrations of Ca and Mg. Tree species diversity (Shannon-Weaver index) and species equitability were inversely related to high concentrations of exchangeable Al and H and directly related to high concentrations of exchangeable Ca and Mg and an increase in soil pH.  相似文献   

A data mining approach to improve multiple regression models of soil nitrate concentration predictions in Quercus rotundifolia montados (Portugal)     

Jorge Nunes  Manuel Madeira  Luíz Gazarini  José Neves  Henrique Vicente 《Agroforestry Systems》2012,84(1):89-100

The changes in the soil nitrate concentration were studied during 2 years in a “montado” ecosystem, in the South of Portugal. Total rainfall, air and soil temperature and soil water content under and outside Quercus rotundifolia canopy were also evaluated. A cluster analysis was carried out using climatic and microclimatic parameters in order to maximize the intraclass similarity and minimize the interclass similarity. It was used the k-Means Clustering Method. Several cluster models were developed using k values ranging between 2 and 5. Thereafter, in each cluster, the data were divided according to their origin (soil under canopy and open areas, and from surface and deep layers). Multiple regression models were tested for each cluster, to assess the relationship between soil nitrate concentration and a set of climatic and microclimatic parameters and the results were compared with models assessed without clustering. The models achieved with data grouped in result of clustering analysis showed better performance than the models achieved without clustering, mostly for data from open areas soils. When temperature is low and/or water presents excess or scarcity levels, the data from soils in undercanopy areas, give rise to models with worst performance than models from open soil areas data. The results obtained for undercanopy area suggest that nitrification process in soil under Quercus rotundifolia trees influence is more complex than for open areas, and subject to other relevant factors beyond water and temperature.  相似文献   

Preliminary results using a new container for cooled stallion semen transport     

A.C. Maciel  F.S. Castro  A. Pires Neves  R.C. Mattos  S. Fiala Rechsteiner 《Journal of Equine Veterinary Science》2012

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鸡粪生物炭表征及其对水和土壤镉铅的修复效果   总被引：8，自引：4，他引：4  

闫翠侠  贾宏涛  孙涛  迪娜·吐尔生江  罗文文  谢厦  孙约兵 《农业工程学报》2019,35(13):225-233

采用缺氧控温法,在200、400、600和800℃条件下制备鸡粪生物炭(BC200、BC400、BC600和BC800),利用比表面积及孔径分析仪(BETacceleratedsurfaceareaandporosimetrysystem)、扫描电镜(scanningelectron microscopy)、透射电镜(transmission electron microscope)、傅里叶红外光谱仪(Fourier transform infrared spectroscopy)等对其理化性质和结构特征进行表征,并研究了鸡粪不同温度处理下生物炭对水体和土壤中Cd、Pb污染修复效果。结果表明,鸡粪生物炭灰分含量、pH值、BET比表面积及孔径随热解温度的升高而增加,表面出现大量无规则的孔隙结构,且以介孔为主,而生物炭产率则随温度升高而显著降低(P0.05)。鸡粪生物炭对Cd2+、Pb2+的吸附分为快速吸附和慢吸附2个阶段,Elovich模型能更好地模拟Pb2+、Cd2+的动力学过程,平衡时最大吸附量分别达到52.02 mg/g (BC600)和242.59 mg/g (BC800)。添加鸡粪生物炭显著提高了土壤pH值(P0.05),而TCLP提取态Pb、Cd含量降低,最大较对照分别降低16.5%和14.5%。与对照相比,鸡粪生物炭不同程度上降低了Pb、Cd弱酸提取态、可还原态以及可氧化态比例,其残渣态比例则分别增加了5.49%～15.14%和2.51%～6.30%。综上所述,鸡粪生物炭对重金属Pb、Cd具有较强的钝化效果。  相似文献   

Effect of Freeze-Dried Red Beet (Beta vulgaris L.) Leaf Supplementation on Biochemical and Anthropometrical Parameters in Overweight and Obese Individuals: a Pilot Study     

de Castro  Ana Paula Ribeiro Barcelos  da Cunha  Diogo Thimoteo  Antunes  Adriane Elisabete Costa  Corona  Ligiana Pires  Bezerra  Rosângela Maria Neves 《Plant foods for human nutrition (Dordrecht, Netherlands)》2019,74(2):232-234

Plant Foods for Human Nutrition - Obesity is an important public health concern and is directly related with chronic noncommunicable diseases that affect the health of millions of people around the...  相似文献