猪弓形体病的报告

1978年,我场有两个生产队的猪,先后发生一种原因不明的热性病,其临床症状很像流感,但按流感治疗无效。因此我们进行了诊断,治疗方面的探讨,其结果如下: (一)发病及流行情况: 78年9月场直菜队50公斤左右育肥猪群中3-4天内发病16头,病猪占发病群的50％以上。病后第16天死亡7头,死亡率为43％。 78年11月份二分场十一连20-40公斤重的育肥猪,数天内发病35头,病猪达发病群的50％以上。发病5-6天死亡12头,死亡率为34％。 (二)临床症状: 体温升高到40.0—41.5℃,食钦减退,或废绝,精神萎顿,喜卧,粪便干固,     

吉安县流行性腮腺炎流行病学调查分析

目的探讨吉安县腮腺炎流行特点和流行因素,总结防治经验。方法采用描述性的流行病学调查方法,结合临床特征等进行统计分析。结果2005年1～12月份共发生腮腺炎病人182例,发病率为41.44/10万;流行高峰在1～5月份,发病153例,占发病总数的84.07%;发病年龄以5～9岁为多,共114例,占62.64%;腮腺炎病例数占法定报告传染病总数的13.01%,是计划免疫针对疾病数的36.4倍。结论免疫空白、易感人群积聚是造成腮腺炎流行的主要因素。加强腮腺炎的监测,广泛开展腮腺炎疫苗接种,提高人群的免疫水平是控制腮腺炎流行最有效的手段。     

祥云县2005年-2009年法定传染病流行病学分析

目的:了解2005年-2009年祥云县法定传染病流行趋势,为制定相应的防治策略提供依据.方法:采用描述流行病学研究方法,对2005年-2009年祥云县法定传染病报告发病情况进行分析.结果:5年法定传染病累计报告发病23种6 503例,年均报告发病率为326.41/10万,年均报告死亡率为1.18/10万.发病分类构成显示,呼吸道传染病占41.01%,其中肺结核占该类报告病例数的96.03%,发病呈逐年下降;肠道传染病占33.51%,其中91.22%为痢疾,且发病有逐年减少趋势,伤寒+副伤寒也逐年减少;血源及性传播传染病占20.01%,其中77.58%为乙肝,且发病呈逐年下降;自然疫源性及虫媒传染病占5.47%,其中76.34%为疟疾,发病逐年减少.结论:法定传染病网络直报对及时发现暴发性或聚集性疫情,及时采取应急防治措施有着十分重要的作用;网络直报工作质量有待进一步提高.     

吉安县流行性腮腺炎流行病学调查分析

目的探讨吉安县腮腺炎流行特点和流行因素,总结防治经验.方法采用描述性的流行病学调查方法,结合临床特征等进行统计分析.结果 2005年1～12月份共发生腮腺炎病人182例,发病率为41.44/10万;流行高峰在1～5月份,发病153例,占发病总数的84.07%;发病年龄以5～9岁为多,共114例,占62.64%;腮腺炎病例数占法定报告传染病总数的13.01%,是计划免疫针对疾病数的36.4倍.结论免疫空白、易感人群积聚是造成腮腺炎流行的主要因素.加强腮腺炎的监测,广泛开展腮腺炎疫苗接种,提高人群的免疫水平是控制腮腺炎流行最有效的手段.     

吉安县流行性腮腺炎流行病学调查分析

目的探讨吉安县腮腺炎流行特点和流行因素,总结防治经验.方法采用描述性的流行病学调查方法,结合临床特征等进行统计分析.结果 2005年1～12月份共发生腮腺炎病人182例,发病率为41.44/10万;流行高峰在1～5月份,发病153例,占发病总数的84.07%;发病年龄以5～9岁为多,共114例,占62.64%;腮腺炎病例数占法定报告传染病总数的13.01%,是计划免疫针对疾病数的36.4倍.结论免疫空白、易感人群积聚是造成腮腺炎流行的主要因素.加强腮腺炎的监测,广泛开展腮腺炎疫苗接种,提高人群的免疫水平是控制腮腺炎流行最有效的手段.     

鞭虫引起猪水样腹泻的病例研究

2011年10月上旬,四川省泸州市一大型猪场627头保育猪和育肥猪相继发生水样腹泻,发病率达95%以上,死亡率为6%.发病猪日龄为6～14周龄,体质量20～40kg,仔猪从保育舍转入育肥舍(采用发酵床饲养)第5天开始出现水样腹泻,采食量减少,逐渐消瘦,感染严重的猪由于腹泻、脱水、心衰而死亡.经临床诊断和实验室确诊,致病原为猪鞭虫.     

猪流行性腹泻病毒流行病学调查及毒株致病力研究

为掌握我国PEDV流行情况,在2020年8月至2023年5月期间,共收集160个场区、908份临床腹泻样品,采用qPCR方法进行PEDV抗原检测,并选取部分病料进行了S基因序列测定和分析,同时分离获得了两株GⅡ群流行毒株,并对其致病力进行了研究。结果显示：PEDV病料阳性率为50.7%(460/908),猪场阳性率为68.8%(110/160)。可见,在临床出现腹泻症状的猪中,有很大部分是由PEDV引起的;对S基因的分析显示,当前我国流行的PEDV主要为GⅡ群,占比为90.3%(65/72),而GⅠ群呈现零星发病,占比为9.7%(7/72);成功分离获得两株GⅡ群流行毒株,两者均对3～4月龄的育肥猪有致病力,口服后,33%～67%猪可出现腹泻,实验猪100%感染并持续排毒,最长排毒时间可达攻毒后13 d。对PEDV的流行病学、基因变异和致病力进行的研究为疫病防控和产品开发提供了依据。     

夏季猪无名高热症的防治

宁强部分地区猪只出现高热、皮温不均、食欲不振、发病急、死亡快为特征的猪“无名高热症”。防治此症主要做好日常饲养管理，及猪全消毒工作。已发病猪只进行口服，肌注的治疗治疗效果明显。     

广西巴马小型猪的培育

目的以广西巴马香猪作为原始基础群,要培育出体型尽量小、两头乌毛色整齐、繁殖性能好、遗传性稳定、有关生物学特性明确、适于实验应用的小型猪品系。方法①纯繁闭锁繁育;②封闭群(A系)主要采用群内随机交配方式;③近交系(B系)是在第10世代封闭群的基础上开始选择近交家系,采用连续全同胞兄妹高度近交方式;④定向选择;⑤遗传监测;⑥饲养试验;⑦广西地方标准的制定;⑧有关生物学特性的研究;⑨实验应用。结果①1994年鉴定专家将培育的实验小型猪命名为"广西巴马小型猪",至今己有22年培育历史。②至2009年完成了广西巴马小型猪封闭群21世代的培育。③至2009年完成了广西巴马小型猪近交系11世代的培育。④对小体型、两头乌毛色的整齐性、多产性的选择及性格温顺的驯养均有效。⑤19个微卫星座位上平均观察等位基因数:17世代广西巴马小型猪封闭群为3.00个,在21个微卫星座位上近交系7世代平均观测等位基因数为1.9048个、平均有效等位基因数为1.5461个,平均基因纯合率为0.7232。⑥确认在广西巴马小型猪生长期间营养需要:蛋白质水平12%、能量3100kcal/kg、钙0.65%、有效磷0.32%。⑦在对质量控制因素研究的基础上制定出广西地方标准DB45/T546-2008《实验动物小型猪》(发布日期:2008.09.08、实施日期:2008.10.08)。⑧国内多家研究机构的应用表明广西巴马小型猪是应用于心血管病和糖尿病等研究的优秀模型动物。结论成功培育出适于医学、生物学实验应用的、具有独特优异特性的广西巴马小型猪封闭群和近交系。     

巴马小型猪胰腺解剖学特点

摘要:胰腺是重要的消化器官。 以往关于猪胰腺的解剖组织学研究,主要侧重于血管和导管的分布。 本研究利用本课题和其他课题中的 24 头对照组动物,观察和测定巴马小型猪胰腺的组织形态学数据。 结果表明:巴马小型猪的胰腺形态变异较大,大体结构可分为 3 个叶,即脾叶、十二指肠叶和连接叶;初步分为 3 种类型,即标准型、纤细型和粗壮型;24 头猪中,3 种类型分别占比 16 / 24、6 / 24 和 2 / 24。 胰腺占比体质量的 0. 09% ~ 0. 15%。 巴马小型猪的胰岛普遍较小,以超小胰岛居多。 胰岛占比胰腺的 1. 52% ~ 4. 98%。 胰岛 β 细胞占比体质量的 0. 012‰ ~ 0. 024‰。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.     

Achieving Unusual States of Matter Under High Pressure

正The periodicity of the elements and the non-reactivity of the inner-shell electrons are two related principles of chemistry,rooted in the atomic shell structure.Within compounds,Group I elements,for example,invariably assume the+1 oxidation state,and their chemical properties differ completely from those of the p-block elements.These general rules govern our understanding of chemical structures and reactions.Using first principles calcula-     

Exchange-Correlation and Electronic Excitation Energies from Pairing Matrix Fluctuations

We have developed an adiabatic connection to formulate the ground-state exchange-correlation energy in terms of pairing matrix linear fluctuations.This formulation of the exchange-correlation energy opens a new channel for density functional approximations based on the many-body perturbation theory.We illustrate the potential of such approaches with an approximation based on the particle-particle Random Phase Approximation(pp-RPA).This re-     

Density Functional Theory for the Response of Periodic Systems to Electric Fields Based on the Vector Potential Approach

正The electronic and nuclear(structural/vibrational)response of 1D-3D nanoscale systems to electric fields gives rise to a host of optical,mechanical,spectral,etc.properties that are of high theoretical and applied interest.Due to the computational difficulty of treating such large systems it is convenient to model them as infinite and periodic(at least,in first approximation).The fundamental theoretical/computational problem in doing so is that     

On the Thermodynamic Limit for Responses to Static Electromagnetic Fields

For molecular systems,the quantum-mechanical treatment of their responses to static electromagnetic fields usually employs a scalar-potential treatment of the electric field and a vector-potential treatment of the magnetic field.Although the potential for each field separately is associated with the choice of an(unphysical)origin,the precise choice of the origin for the electrostatic field has little consequences for the results.This is different for the     

An affordable accurate evaluation of the binding conformations predicted by molecular docking studies in bio-system

Franck-Condon factors bridge the gap between theoretical modeling and experimental observations for molecular electronic spectroscopy and electron transfer.Under the displaced harmonic oscillator approximation,multidimensional Franck-Condon factors are decomposed into a product of many one-dimensional(1D)Franck-Condon(FC)factors,and each 1D-FC factor is associated with one Huang-Rhys factor that determines the leading contribution of     

Call for Papers

<正>"The Journal of Shanghai Normal University:Mathematics"is published by Shanghai Normal University as regular issues of The Journal of Shanghai Normal University each year from 2014 in English.The editors-in-chief of the issues are professors Yuhao Cong and Maoan Han.The Journal of Shanghai Normal University was started in 1958 with