鸡贫血病雏鸡ND免疫后局部免疫组织抗体生成细胞变化

对感染鸡贫血病毒（ＣＡＶ）雏鸡新城疫（ＮＤ）疫苗免疫及其强毒攻击后局部免疫组织——盲肠扁桃体和哈德尔腺的ＩｇＡ、ＩｇＧ和ＩｇＭ抗体生成细胞数量的动态变化进行了检测。结果发现,ＣＡＶ感染雏鸡ＮＤ免疫后７、１４、２８ｄ及新城疫强毒（ｖＮＤＶ）攻击后,上述免疫组织的三种抗体生成细胞数量均不同程度地低于未感染ＣＡＶ的ＮＤ免疫对照雏鸡。其中盲肠扁桃体弥散区的ＩｇＡ减少最为明显。表明ＣＡＶ感染雏鸡消化道和呼吸道局部免疫组织对新城疫疫苗的体液免疫应答功能降低。新城疫强毒攻击后ＣＡＶ感染ＮＤ免疫雏鸡的免疫保护率也明显低于未感染ＣＡＶ的免疫对照雏鸡。     

Toxicology Test and Safety Evaluation of Cefquinome Sulfate Liposomes

The purpose of this study was to evaluate the safety of the cefquinome sulfate liposomes by using the acute toxicity test, local irritation test and chronic toxicity test. The results showed that the LD₅₀ of cefquinome sulfate liposomes was 639.73 mg/kg after intramuscular injection of its suspension and 95% confidence interval was 573.06 to 714.17 mg/kg. There was no significant stimulation to muscle. Subchronic toxicity test showed that the weight, haematological indexes and biochemical criterion of rabbits in variety dose had no significant difference compared with normal group (P>0.05). There was no visible pathological changes on the liver,kidney histology. According to pathological observation, the structure of liver and kidney were clear in treated and middle dose groups,but there existed disorganized hepatic cell cord in the liver and hemorrhag between glomerulopathy,tubulointerstitial and hepatic sinusoids in high dose group. All results proved that the cefquinome sulfate liposomes was safe and reliable based on the animal experiments.     

局域网网络环境中的实时通信模型

讨论了局域网网络环境中的实时通信过程的模型。采用Ｗｉｎｄｏｗｓ的时间中断技术建立了通信过程中相应的几个模型：对话建立模型、数据发送与接收模型和对话结束模型，以便用于网络中的实时通信、实时演示和实时讨论。     

新农村建设视野下豫南乡土文化遗产现状及抢护对策

豫南乡土文化存在生存环境恶化、文化本体的内部生态基因萎缩、传承后继乏人、经费投入严重不足等问题。对豫南乡土文化遗产进行抢护和回归性建设,不仅可为新农村建设的可持续发展提供不竭的精神道德支持,也有利于构筑地方经济发展的新平台。实施豫南乡土文化的建设储备战略与运行战略将是对其抢护的重要对策。     

Why Is Non-Timber Forest Product Harvesting an “Issue”?

Summary

Despite an encouraging trend in North America of growing interest across a range of disciplines in non-timber forest products (e.g., this volume), NTFP harvesters' knowledge and practices continue to be poorly understood and undervalued, if not ignored, both by research scientists and forestland policy-makers and managers. This article explores why NTFP harvesting suddenly emerged in North America as an “issue” in the early 1990s. Drawing from a three-year study of chanterelle mushroom harvesters on the Olympic Peninsula Biosphere Reserve (Washington, USA), we discuss a variety of forces which intersected in this period to bring NTFP harvesting to wider attention. Unfortunately, harvesters continue to be excluded as knowledgeable actors in, if not legitimate co-managers of, temperate forest ecosystems, resulting in both passive and active harvester resistance to research and management, a devaluing of local harvesting traditions, and missed opportunities for collaboration. We reluctantly conclude that despite “New Forestry” co-management rhetoric, given existing institutional barriers and positivist scientific categories, NTFP workers will likely remain excluded from active roles in temperate forest research and management-contributing in turn to the ongoing legitimacy crisis of public and private forest management entities.     

安哥拉山羊级进杂交后代生活力初步观察

对安哥拉山羊及其级进杂交后代的生长发育、繁殖力、抗病性、采食习性等进行初步观察研究，结果表明：在试验场良好的饲养条件下，各代杂种羊生长发育正常，但繁殖力、抗病性、采食能力随级进杂交代数的增加有降低的趋势。据此，笔者认为，在陕北特定的生态经济条件下，培育毛用山羊新品种，级进杂交代数不宜太高，到Ｆ３代应停止级进，进行横交固定，而且在整个育种中，应始终注意饲养问题，以保证新品种培育成功。     

浅谈地方图书馆古籍数字化资源建设

在调查的基础上,探讨了国内地方图书馆古籍数字化资源的建设基本情况,并提出了地方图书馆古籍数字化资源建设的基本原则。     

运用图书馆公益性服务地方志编写

图书馆永远是一种公益性文化教育机构。图书馆及其藏品作为一种公共物品，靠全民税收由政府兴办；图书馆作为一种知识实体，不可能全面实行有偿服务；图书馆作为向公众提供知识载体的场地之一，也不可能靠自身的知识劳务输出完善自我生存与发展。     

政府投资工程项目比选制度的法律分析

地方法律法规与民众关系密切，研究地方法治建设具有重要意义。以四川省政府投资工程建设项目比选制度为对象，梳理其形成，归纳其概念，在对比选制度进行法理分析和实证分析的基础上，提出完善措施，以期学界同仁关心地方法治建设。     

分叉角与回转半径对双向流道灌水器水力性能影响模拟研究

为研究双向流道灌水器水力性能，将其结构单元作为研究对象，以分叉角和回转半径两个结构参数为影响因素，采用正交试验设计16种结构参数组合方案，利用计算流体动力学软件Ansysfluent对流道内部流体的流动状态进行数值模拟，通过量纲分析建立流道结构参数与流道单元局部水头损失的回归模型。结果表明：双向流道单元局部水头损失与分叉角、回转半径和流道流速有关，分叉角与局部水头损失呈负相关关系，回转半径和速度与局部水头损失呈正相关关系；当入口流速为固定值时，分叉角为32.4°、回转半径为1.72 mm，流道单元局部水头损失最大；当设置10个流道单元时，交叉排列方式组合的灌水器流态指数较优。