Therapeutic effect of methane and its mechanism in disease treatment

Journal of Zhejiang University-SCIENCE B - Methane is the simplest hydrocarbon, consisting of one carbon atom and four hydrogen atoms. It is abundant in marsh gas, livestock rumination, and...     

高职高专校实验(训)仪器设备管理的探索

从高职高专校实验(训)仪器设备的管理过程中的关键环节着手,提出了加强高职高专校实验(训)仪器设备的管理,发挥其应有效益的相应措施。     

电子学档在在线学习监控中的应用研究

网络在线学习的监控在网络学习中是不可缺少的重要环节,本文通过对比传统课堂学习与在线学习的监控特点,提出把电子学档用于在线学习监控。将它与教学平台相结合,能够准确记录信息和及时反馈,对在线学习的各个环节起到一定的监控作用。     

光素数地址码互相关特性数学分析

围绕OCDMA系统的重要地址码类型——光素数地址码的结构模型,根据有限Galois域上的线性全等理论,系统分析了基本素数码、扩展素数码、修正素数码的互相关特性,指出码字中“1”位的重叠区域.具体给出基本素数码最大互相关为2、扩展素数码和修正素数码最大互相关为1的数学证明,并给出完整的的素数码相关性分析过程.在此基础上,计算基本素数码和扩展素数码的信号干扰比以及多址干扰误码率,并比较基于不同素数码的OCDMA系统的误码性能,给出定量比较结果.     

现阶段我国社会分层与高等教育的相互关系

改革开放以后,我国原有的社会分层机制和简单的社会阶层结构都发生了巨大变化,随着改革的深入,高等教育与社会分层的相互关系日益引起人们的关注,本文将对两者的关系作一分析。     

教育类期刊如何服务于新课程改革

2001年9月，我国开始了以教材改革为核心的一次全方位的课程改革，在这次课程改革中，服务于学校教育的教育类期刊就要充分利用自己作为媒体的独特地位，认真研究课程改革的理论和有关精神，积极参与到课程改革的实践之中，科学地策划课程改革栏目，积极引导、推动课程改革。     

EUTECTOID STRUCTURES IN NICKEL-ALUMINIUM BRONZES

This paper discusses the microstructure of nickel-aluminium bronzes con-taining(9-10)wt% Al and(0.1～5)wt% Ni,in which three eutectoids may exist.Themorphologies of α+γ_2 and α+β'_2 are similar but the latter is finer.In the α+β'_2+γ_2eutectoid structure β'_2 is mainly concentrated at the α/β boundaries,while γ_2 is distrib-uted inside prior B regions.Both K-S and N-W orientation relationships exist betweenα and β'_2(or γ_2)in alloys consisting of α+β'_2 or α+γ_2.However,if the alloy consists ofα+β'_2+γ_2 eutectoid,the lattices of β'_2 and γ_2 are parallel,both of them have the N-Worientation relationship with α.     

酶工程教学方法与教育思想改革初探

本文在创新、实效、突出重点、培养高素质人才等几个方面，论述了在讲授生物工程专业的专业必修课“酶工程”时，从教材的选择、授课方法、知识的传授等方面，在教学方法、教学思想上，进行了改革尝试，通过学生期末考试的成绩来看，取得了一定的效果     

Anisotropic Open Cosmological Models of Spin Matter with Magnetic Moment

We have derived a set of field equations for a Weyssenhoff spin fluid including magnetic interacton among the spinning particles prevailling in spatially homogeneous,but anisotropically cosmological models of Bianchi type V based on Einstein-Cartan theory.We analyze the field equations in three different equations of states specified by p=1(1/3)ρand p=0,The analytical solutions found are non-singular provided that the combined energy arising from matter spin and magnetic interaction among particles overcomes the anisotropy energy in the Universe,We have also deduced that the minimum particle numers for the radiation(p=(1/3)ρ) and matter(p=0) epochs are 10^88 and 10^108 respectively.the minimum particle number for the state p=ρ is 10^96,leading to the conclusion that we must consider the existence of neutrinos and other creation of particles and anti-particles under torsion and strong gravitational field in the early Universe.     

Potential natural exposure of endangered red-crowned crane (<Emphasis Type="Italic">Grus japonensis</Emphasis>) to mycotoxins aflatoxin B<Subscript>1</Subscript>, deoxynivalenol,zearalenone, T-2 toxin,and ochratoxin A

A survey was conducted to determine whether mycotoxins were present in the foods consumed by red-crowned cranes (Grus japonensis) in the Yancheng Biosphere Reserve, China. Collected in the reserve’s core, buffer, and experimental zones during overwintering periods of 2013 to 2015, a total of 113 food samples were analyzed for aflatoxin B₁, deoxynivalenol, zearalenone, T-2 toxin, and ochratoxin A using high performance liquid chromatography (HPLC). The contamination incidences vary among different zones and the mycotoxins levels of different food samples also presented disparity. Average mycotoxin concentration from rice grain was greater than that from other food types. Among mycotoxin-positive samples, 59.3% were simultaneously contaminated with more than one toxin. This study demonstrated for the first time that red-crowned cranes were exposed to mycotoxins in the Yancheng Biosphere Reserve and suggested that artificial wetlands could not be considered good habitats for the birds in this reserve, especially rice fields.