首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   10篇
  免费   0篇
  2篇
综合类   1篇
农作物   2篇
畜牧兽医   4篇
园艺   1篇
  2012年   3篇
  2011年   2篇
  2009年   2篇
  2003年   1篇
  1996年   2篇
排序方式: 共有10条查询结果,搜索用时 15 毫秒
1
1.
With the increasing demand of fabrics for special usage areas, more complex woven structures are designed and from the structural point of view, especially the parameters which affect the comfort properties become more important. This paper reports the effect of structural parameters of double layered woven fabrics, such as number of interlacing picks, period of interlacing and number of weft skips on the basic comfort properties of the fabrics (thickness, air permeability and wicking properties) produced according to Taguchi orthogonal array design. The investigated parameters were determined before and after finishing treatment. According to the results, it is found that period of interlacing has an important effect on the thickness and air permeability of both untreated and treated fabrics whereas in terms of drying coefficient, the effect of the investigated parameters is not statistically important.  相似文献   
2.
Summary Pure cultures ofCorynebacterium pseudotuberculosis were obtained from 11 cases of lymphadenitis (known locally as taloa or mala) in camels. Camel isolates produced typical taloa in camels experimentally inoculated subcutaneously at the base of the external ear with 1010 colony forming units. A sheep strain ofC. pseudotuberculosis inoculated into camels produced a local abscess at the site of inoculation but did not produce taloa. Re-infection of camels recovered from experimental inoculation did not produce taloa suggesting the possibility of the development of a vaccine against lymphadenitis in camels.
Infeccion PorCorynebacterium Pseudotuberculosis Y Linfadenitis (Taloa O Mala) En El Camello
Resumen Se obtuvieron cultivos puros deCorynebacterium pseudotuberculosis a partir de 11 casos de linfadenitis (conocida localmente como taloa o mala) en camellos. La inoculación subcutánea en camellos en la base de la oreja de 1010 unidades formadoras de colonias procedentes de un cultivo obtenido de camellos infectados causó taola. Sin embargo, una cepa ovina deC. pseudotuberculosis causó un abceso en el lugar de la inoculación pero no produjo taola en camellos. La reinfección de los camellos que se habían recuperado de la inoculación experimental no causó taola, lo que sugiere la posibilidad de desarrollar una vacuna frente a la linfadenitis caseosa del camello.

Infection ACorynebacterium Pseudotuberculosis Et Lymphadenite (Taloa Ou Mala) Chez Le Chameau
Résumé On a obtenu des cultures pures deCorynebacterium pseudotuberculosis à partir de 11 cas de lymphadénite (dénommée localement taloa ou mala) chez des chameaux. L'inoculation expérimentale des isolements camelins faite en infection sous-cutanée à la base de l'oreille externe avec 1010 unités formant des colonies a provoqué un taloa typique. Une souche ovine deC. pseudotuberculosis inoculée à des chameaux n'a conduit qu'à la formation d'un abcès local au point d'inoculation mais pas au taloa. La réinfection des chameaux guéris d'une inoculation expérimentale ne provoque pas de taloa, ce qui permet d'augurer la possibilité de développement d'un vaccin contre la lymphadénite cameline.
  相似文献   
3.
An experiment was conducted to determine if vitamin E (alpha-tocopherol-acetate) and chromium (chromium picolinate, Cr Pic) supplementation attenuate the negative effects of cold stress on egg production, egg quality, serum metabolites, and antioxidant status in Japanese quails (Corurnix coturnix japonica). One hundred and fifty laying Japanese quails (50-day-old) were divided into five groups, 30 birds per group. The laying quails kept at 6 degrees C for 12 h/d (08.00 p.m. to 08.00 a.m.) were fed either a basal diet (low temperature-basal diet, CS group) or the basal diet supplemented with either 400 microg of Cr/kg of diet (Cr group), 250 mg of alpha-tocopherol-acetate per kg of diet (Vit. E group) or 400 microg of Cr plus 250 mg of alpha-tocopherol-acetate per kg of diet (Vit. E + Cr group) while quails kept at 18 degrees C were fed a basal diet (thermo-neutral-basal diet, TN group). Performance and egg quality were significantly reduced in CS group compared with TN group. Supplemental chromium and vitamin E significantly increased live weight change, egg production, and improved feed efficiency in cold-stressed laying hens compared with the group fed the basal diet at 6 degrees C. Egg production and egg weight were also greater (P < 0.05) in each supplemental group compared with the CS group. However, a combination of vitamin E and chromium, rather than each separately, provided the greatest performance. Supplemental vitamin E and chromium also increased serum vitamin C and E but, decreased malondialdehyde (MDA) concentrations (P < 0.05); the combination of vitamin E and chromium resulted in the highest levels of serum vitamin C and E within the cold-stressed quails. Results of the present study indicate that combined antioxidant supplements increased performance, egg quality and serum antioxidant levels while lowering MDA in cold-stressed quails.  相似文献   
4.
Cystic echinococcosis is an important public health problem in our region. The aim of this study was to assess the surgical incidence of cystic echinococcosis in Sivas, Turkey. A retrospective follow‐up study was carried out between 1997 and 2004. The mean age of 124 men (39.2%) and 192 women was 36.4 years. The liver was the primary site of cyst development (76.6%), followed by the lungs (19.9%), the spleen (5.4%), the kidneys (3.5%) and the peritoneal cavity (3.2%). Mean annual surgical incidence was 6.4 per 100 000 inhabitants for a 7‐year period. The most common site of recurrence was the liver. Hepatic cysts were more frequently infected than pulmonary cysts (P < 0.05). In those patients with an infected cyst, the mean circulating eosinophil level was significantly lower than in those without. Rupture and infection were more common in men (P < 0.01). In conclusion, serious structural, legislative, surveillance, prevention and control measures for echinooccus should be undertaken in our region.  相似文献   
5.
6.
In this study, we analyzed eight phenolic compounds (tyrosol, hydroxytyrosol, oleuropein, pinoresinol, and caffeic, ferulic, vanillic, and p-coumaric acid) in 55 mono- and multivarietal extra virgin olive oil samples by high performance liquid chromatography (HPLC) coupled to a coulometric electrochemical array detector (ECD). The phenolic profile of olive oil samples differed depending on the geographical origin and olive variety. The total reducing capacity (total phenolics) of olive oils ranged from about 40 to 530 mg gallic acid equivalents/kg oil. Tyrosol, hydroxytyrosol and pinoresinol were the most abundant phenolic compounds in olive oils. The antioxidant capacity of the olive oil extracts was determined by ferric reducing antioxidant power (FRAP) and Trolox equivalent antioxidant capacity (TEAC) assays. Total reducing capacity was significatly correlated with FRAP (R 2 ?=?0.91, p?<?0.001) and TEAC (R 2 ?=?0.92, p?<?0.001) values. Total reducing capacity, TEAC and FRAP values were significantly correlated with tyrosol, hydroxytyrosol as well as oleuropein concentrations. Hydroxytyrosol, comprising over 40 % of total olive oil phenolics, mainly contributed to the antioxidant activity of olive oils. The present study provides a comprehensive database of polyphenols in olive oils from 9 different countries and four continents.  相似文献   
7.
The high radioactivity and trace elements in drinking water are common concerns for human health. The aim of this study was to investigate the eligibility of groundwater for drinking purpose in terms of both radioactivity and trace element contents in Eskisehir Region (Turkey). The study area is located in a highly populated residential area where water supply is mostly met from groundwater. The area is about 20,000 km2, where igneous, metamorphic, and sedimentary rocks are exposed. The 209 water samples collected from 84 water resources (including thermal waters) were analyzed with respect to major ions, trace elements, and radioactivity (gross alpha and gross beta) during both in wet and dry seasons. Based on the analysis results, trace elements in 49 samples of 84 water resources were over the limits of Code TS 266 1997 (Turkish Drinking Water Standards) and WHO 1993 standards. Particularly, Fe, Mn, Al, As, Ba, Zn, Cr, Cu, and B ion concentrations exceeded the limits. The gross alpha values in 18 locations and gross beta values in three locations also exceeded the limits of aforementioned standards in terms of radioactivity (gross alpha?=?0.1 Bq L?1; gross beta?=?1 Bq L?1). Furthermore, water radioactivity levels were close to the allowable limits in 33 water resources. The obtained results explicitly indicate that there is a strong relationship between the higher radioactivity–trace element contents and geochemical composition of rocks, which controls the radioactivity and trace element concentrations present in the aquifer.  相似文献   
8.
In this study, N-(2-aminoethyl)salicylaldimine bonded silica gel was synthesized and characterized using Fourier transform infrared and C, H, N elemental analysis. The analytical conditions such as the pH and volume of the solution, flow rates of the sample solution and the type of eluent to achieve the simultaneous preconcentration of Cu(II), Ni(II), Cd(II) and Zn(II) were optimised using the modified silica gel loaded column using a solid phase extraction technique. Samples (50?C500?ml) containing metal ions at optimal pH of 8 were passed through the column filled with the modified silica gel at 7?ml min?1 and then elution was achieved using 5?ml of 0.25?M HCl. The concentrations of metal ions in the eluates were determined using flame atomic absorption spectrometry (FAAS). The effects of matrix ions were also studied and none of the major ions interfered to the proposed method. The accuracy of the developed method was validated using a certified reference water sample (Ontario Lake water, NWTMDA-54.4). The method was successfully applied to the analysis of various natural water samples. The adsorption capacities of the modified silica gel for Cu(II), Ni(II), Cd(II) and Zn(II) ions were determined and found to be 0.332, 0.261, 0.130 and 0.375?mmol g?1, respectively.  相似文献   
9.
Cultivar characterization of Aegean olive oils (cv. Ayvalik and Memecik) based on their volatile compounds was carried out. The main volatile compounds detected in the Aegean olive oils were the C6 compounds derived from polyunsaturated fatty acids through the lipoxygenase pathway. The C6 aldehydes and C6 alcohols contributing to the green and fruity sensory notes of olive oil were determined in the Aegean olive oils as the major volatile compounds. Significant differences in the levels of hexanal, (E)-2-hexenal, 3-ethyl-1,5-octadiene and total compounds from linolenic acid were observed between Ayvalik and Memecik oils (p < 0.01). Principal component analysis (PCA) and linear discriminant analysis (LDA) were applied to process the experimental data. The results of the chemometric analysis revealed that the two cultivars were clearly discriminated on the PC1–PC3 planes and LDA produced a 100% correct group classification.  相似文献   
10.
In this study, the body measurements (BMs) of Holstein cows were determined using digital image analysis (IA) and these were used to estimate the live weight (LW) of each cow. For this purpose, an image capture arrangement was established in a dairy cattle farm. BMs including wither height (WH), hip height (HH), body length (BL), hip width (HW), plus the LWs of cows were first determined manually, by direct measurement. Then the digital photos of cows were taken from different directions synchronously and analyzed by IA software to calculate WH, HH, BL and HW of each cow. After comparing the BMs obtained by IA with the manual measurements, the accuracy was determined as 97.72% for WH, 98.00% for HH, 97.89% for BL and 95.25% for HW. The LW estimation using BMs was then performed by the aid of the regression equations, and the correlation coefficient between the estimated and real (manual) LW values obtained by weighing was calculated as 0.9787, which indicates the IA method is appropriate for LW estimation of Holstein cows.  相似文献   
1
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号