试论新疆伊斯兰教的双重社会功能与和谐社会构建

伊斯兰教信仰对新疆少数民族社会生活等各个方面的影响是根深蒂固的,我们只有深入研究伊斯兰教的双重社会功能,在对伊斯兰教管理的过程中,尽量避免其消极功能,最大限度地发挥其积极功能,才能构建新疆和谐社会.     

我国东北地区林业系统林产工业比较优势分析

林产工业是东北老工业基地的重要组成部分,对东北经济发展具有重要意义.根据林产工业区域间差异比较优势模型,从林产工业总体规模、林产工业具体行业组成、具体经济类型组成等三个方面进行分析,总结东北地区林产工业发展优势差异,为各省区今后林产工业发展趋势和可行措施提供借鉴.     

Identification of AFLP fragments linked to seedlessness in Ponkan mandarin (Citrus reticulata Blanco) and conversion to SCAR markers

Seedlessness is a desirable trait in citrus and has been an important breeding objective. In this study, we employed the amplified fragment length polymorphism (AFLP) technique to find molecular markers linked to the seedless trait in the Ponkan mandarin (Citrus reticulata Blanco). After screening with 72 primer pairs, 5 AFLP markers were identified that putatively correlated with the target trait. Their association was also tested by analyzing the AFLP profile from pooled individual accessions. The five fragments were cloned and sequenced, and BLAST searches showed that four of the markers had high homology to functional genes, providing some promising information that may aid in understanding the molecular mechanism of seedlessness in citrus. Based on the sequence information, eight specific primers were designed and eventually fragments AFLP-2 and AFLP-5 were successfully converted into sequence characterized amplified region (SCAR) markers. Thus, the markers detected could be useful for accelerating citrus breeding programmes by enabling early screening for seedlessness mutations using marker-assisted selection.     

桥梁高墩施工平台无支架提升技术应用

惠河高速公路东江特大桥主桥采用空心矩形墩，最高桥墩达28m，本文介绍高墩无支架提升模板及施工平台的施工技术。     

绵粉蚧危害的花椒树对异色瓢虫的招引作用

1999— 2 0 0 1年研究了山西太行山区花椒林受绵粉蚧危害后 ,花椒树对主要天敌昆虫异色瓢虫的招引作用。结果显示 ,花椒树受害的新鲜枝梢对瓢虫的引诱率为 5 7 0 % ,未受害新鲜枝梢引诱率为 2 0 0 % ,用受害枝条水浴蒸馏出的馏分招引瓢虫的百分率为 37 0 % ,未受害枝条馏分招引瓢虫百分率为 10 3%。说明花椒绵粉蚧危害 ,可诱导树体挥发性物质发生改变 ,增加了对天敌昆虫的引诱作用 ,并且对瓢虫的引诱力随着受害枝梢量的增加而增强 ,它的诱导活性在受害后可持续约 2个月 ;采用GC MS联用仪分析比较 ,发现受害花椒枝梢的酯类物质明显增多 ,受害与未受害花椒枝梢的气相色谱图中有 15个峰位的化学组分相同 ,但受害的含量显著高。另有 9个峰位的组分在未受害枝梢中含量太低 ,未检测出。     

进口原羊毛携带有害生物情况及检疫监管模式探讨

通过对进口原羊毛进行研究分析,认为其可携带许多种动物病原、植物有害生物、病原微生物、害虫、媒介生物以及粪便等,具有携带率高、隐蔽性强、难以预测等特点,会给我国动植物和人类健康造成威胁,也会给我国农畜产品的出口造成严重影响。针对当前检验检疫工作任务较重、人力不足、标准体系不完善、监管难度加大等方面的实际情况,提出需建立包括加工厂注册登记、开展风险分析和分类管理、现场查验、后续监管、提升能力和完善体系等内容的检疫监管模式。     

Threonine requirement of White Pekin ducks from hatch to 21 d of age

1. A dose-response experiment with 5 dietary threonine concentrations (5.0, 5.8, 6.6, 7.4 and 8.2 g/kg) was conducted to estimate the threonine requirement of White Pekin ducks from hatch to 21 d of age.

2. A total of 240 one-d-old male White Pekin ducks were allotted to 5 experimental treatments and each treatment contained 6 replicate pens with 8 ducks per pen. Ducks were reared in raised wire-floor pens from hatch to 21 d of age. At 21 d of age, growth performance and intestinal morphology were determined.

3. The weight gain and feed intake of Pekin ducks increased and feed/gain of these birds decreased linearly or quadratically as dietary threonine increased from 5.0 to 8.2 g threonine/kg. Compared to ducks fed on diets containing 5.0 g threonine/kg, ducks given diets containing 7.4 g threonine/kg had higher villus height in duodenum, jejunum and ileum.

4. The threonine requirements for weight gain of White Pekin ducks from hatch to 21 d of age was estimated to be 6.72 g/kg when dietary crude protein concentration was 189.8 g/kg and threonine supply was critical for maintaining intestinal structure of these birds.     

Immune responses of orange-spotted grouper,Epinephelus coioides,against virus-like particles of betanodavirus produced in Escherichia coli

Betanodaviruses are the causative agents of viral nervous necrosis (VNN), a serious disease of cultured marine fish worldwide. Virus-like particles (VLPs) are one of the good novel vaccine candidates to control this disease. Until now, betanodavirus vaccine studies mainly focused on the humoral immune response and mortality after virus challenge. However, little is known about the activation of genes responsible for cellular and innate immunity by vaccines. In the present study, VLPs of orange-spotted grouper nervous necrosis virus (OGNNV) were produced in prokaryotes and their ability to enter Asian sea bass cells was the same as native virus, suggesting that they possess a similar structure to OGNNV. VLPs immunogenicity was then determined by intramuscularly vaccinating Epinephelus coioides at different concentrations (1.5 or 15 μg g^?1 fish body weight, FBW) and immunizing frequencies (administration once, twice and thrice). A single vaccination with the dosage of 1.5 μg g^?1 FBW is enough to provoke high titer antibodies (average 3 fold higher than that of negative control) with strong neutralizing antibody titer as early as 1 week post immunization. Furthermore, quantitative PCR analysis revealed that eleven genes associated with humoral, cellular and innate immunities were up-regulated in the liver, spleen and head kidney at 12 h post immunization, correlating with the early antibody response. In conclusion, we demonstrated that VLP vaccination induced humoral immune responses and activated genes associated with cellular and innate immunity against betanodavirus infection in orange-spotted grouper.     

滚动轴承故障诊断及其维护

滚动轴承作为旋转机械的关键零件,对其故障诊断及维护来减小经济损失、延长使用寿命具有十分重要的意义。以故障检测确定失效模式,针对其失效模式的特点提出解决方案使轴承正常工作。同时做好滚动轴承的维护,提高其使用价值,将为机械制造业带来巨大的经济效益和低风险的保障。