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91.
Electrospun web may possibly be widely applied to protective garments or specialty textiles due to its high level of protection
as well as comfort. Of particular interest in this study is to develop waterproof-breathable fabric by applying electrospun
web of polyurethane directly onto the substrate fabric. The optimal electrospinning condition was examined with regards to
the concentration, applied voltage and tip-to-collector distance. Solvent-electospinning of polyurethane was performed at
the optimum condition, using N,N-dimethylacetamide as solvent. The thickness of 0.02 mm of electrospun web was applied onto
the polyester/nylon blended fabric. For comparison, the polyester/nylon fabrics were coated with 0.02 mm thickness of polyurethane
resin membranes adopting four different conditions. The electrospun PU web/fabric was compared to resin coated fabrics in
terms of water-proof and breathable properties. The electrospun web applied fabric showed higher air permeability, vapor transmission,
and thermal insulation properties than resin coated fabrics, which can be translated as greater comfort sensation of electrospun
applied fabrics. However, water resistance value of electrospun web applied fabric did not reach that of resin coated fabrics. 相似文献
92.
Park C Yoo JH Jeon HW Kang BT Kim JH Jung DI Lim CY Lee HJ Hahm DH Woo EJ Park HM 《The Journal of veterinary medical science / the Japanese Society of Veterinary Science》2007,69(9):951-955
Three dogs were presented to us for evaluation of cardiac problems. Electrocardiographic recordings revealed severe tachyarrhythmia and atrial fibrillation with ventricular tachycardia in 2 of the 3 dogs. The echocardiographic findings of the 3 dogs revealed markedly decreased fractional shortening and a marked increase in E-point septal separation. Based on the results of electrocardiographic and echocardiographic evaluation, the 3 dogs were diagnosed as dilated cardiomyopathy (DCM). The dogs were treated with conventional cardiac medication, but cardiac function did not improve and the clinical signs remained. We subsequently attempted treatment with granulocyte-colony stimulating factor (G-CSF; 10 microg/kg, subcutaneously). The specific purpose of G-CSF therapy for DCM was to improve cardiac function and a significant improvement in cardiac function was confirmed. The three dogs had no treatment side effects. This case report suggests that G-CSF might have therapeutic effects for medically refractory DCM in dogs. 相似文献
93.
BSL-3实验室须经国家生物安全认可和严格的实验活动审批才能开展相应活动,是国家(地区)开展高致病性病原微生物实验活动的重要技术支撑平台。实验室生物安全风险点易发生在样本及菌毒种的接收、传递和保存,动物实验,污水以及固体废弃物处理等环节,而实验室的意外事件(电力故障、火灾、积水等)与生物安保漏洞也会造成重大的生物安全事故。提示应准确地识别风险并通过人员日常监管、标准操作规程、两级屏障设施和个人防护装备等系列措施对生物安全风险点予以严格控制。 相似文献
94.
以干海乡一生态鸡鸡苗场中分离得到的鸡致病性大肠杆菌病原菌为试验对象,采用细菌形态学观察以及生化试验、动物试验和血清学试验等方法,表明所分离到的5个菌株为致病性大肠杆菌。用氨苄青霉素、庆大霉素、四环素、磷霉素、新霉素、土霉素、链霉素、红霉素、氟苯尼考、氧氟沙星、头孢曲松、阿莫西林等12种药物对5个不同菌株进行药敏试验比较。结果表明:5个菌株均对新霉素、阿莫西林、头孢曲松和磷霉素高度敏感。对庆大霉素、四环素、土霉素等抗菌药物耐药性极强。 相似文献
95.
于2007年11月19日、2008年3月21日、2008年7月20日3次对葫芦岛贝类养殖区的水环境和浮游生物进行了调查,调查共设10个站位.结果表明:从pH、溶解氧含量来看,该海域海水属于Ⅰ类海水;10个站位营养盐的水平分布比较均匀;从溶解性无机氮含量来看,该海域海水介于Ⅱ类至Ⅳ类海水之间;从活性磷酸盐含量来看,该海域海水介于Ⅰ类至Ⅱ类海水之间;2007年11月、2008年3月、2008年7月该海域的N/P值分别为221.4、86.0、51.5,P是限制性因子;该海域浮游植物共计46种(属),其中硅藻门41种(属),甲藻门5种(属),2007年11月、2008年3月、2008年7月分别出现浮游植物40、37、43种(属);浮游动物共计23种(属),其中毛颚动物1种(属),被囊动物1种(属),桡足类11种(属),浮游幼虫类10种(属),2007年11月、2008年7月、2008年3月分别出现浮游动物23、23、15种(属);浮游植物、浮游动物密度及其生物量均为2008年7月最高、2007年11月次之、2008年3月最低;该海域浮游植物Shannon-Wiener多样性指数(H')为3.34 ~3.94,浮游动物H'为2.92 ~3.90,该海域处于轻度污染或无污染状态. 相似文献
96.
对广东省将推广的54份杂交稻组合对稻瘟病和白叶枯病的抗病性进行了鉴定。对稻瘟病的抗病性鉴定表明:抗病组合共49个,占90.7%;其中,高抗(抗性比≥91%)组合30个,占55.6%。对稻白叶枯病的抗病性鉴定表明:没有高抗(HR)和抗(R)的组合,仅有一个杂交稻组合(西胜2175)表现为中抗(mR),仅占1.9%,其余53个组合都表现感病,占98.1%。进一步分析表明:对稻瘟病表现高抗的30个杂交稻组合都不抗白叶枯病,而中抗白叶枯病的杂交稻组合西胜2175对稻瘟病表现为中抗,抗性比为74%。 相似文献
97.
Xiaojie Wang Wenming Zheng Heinrich Buchenauer Jie Zhao Qingmei Han Lili Huang Zhensheng Kang 《European journal of plant pathology / European Foundation for Plant Pathology》2008,120(3):241-247
Stripe rust of wheat caused by Puccinia striiformis f. sp. tritici is one of the most important diseases on wheat worldwide, especially in temperate regions with cool moist weather conditions.
A rapid and reliable detection of the pathogen in latent infected wheat leaves during overwintering of the fungus in the dormant
stage will contribute to determine the initial inoculum potential and thus to predict early outbreak and to improve effective
management of the disease. To achieve this aim, a PCR-based method was developed for specific and sensitive detection of P. striiformis. Specific primers were designed according to a genome-specific sequence of P. striiformis. To evaluate the specificity of the primers, seven different isolates and races of P. striiformis as well as six other pathogens of wheat were tested. All isolates of P. striiformis yielded a distinct band of a fragment of 470 bp, while using DNA of the other wheat pathogens as a template no amplification
product was detected. The sensitivity of the primers was tested using serial dilutions of total DNA from P. striiformis; the limit of detection was 10 pg of DNA. Using extracts from P. striiformis-infected wheat leaves, the fungus could be determined in the leaves before symptoms appeared. The stripe rust could also
be detected in the dormant stage by the PCR assay in samples of wheat leaves taken during the winter season. The application
of the PCR assay may be useful for rapid and reliable detection of P. striiformis in latent infected leaves of overwintering wheat plants. 相似文献
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