Strategy for the mapping of interactive genes using bulked segregant analysis method and Mapmaker/Exp software

A qualitative trait is usually controlled by a single gene, but it may be sometimes controlled by two or even more genes. This phenomenon is called gene interaction. Rapidly searching for linked mo- lecular markers via bulked segregant analysis (BSA) and then constructing regional linkage map with Mapmaker/Exp has become a common approach to mapping single major genes. However, methods and computer programs developed for mapping single major genes cannot be simply applied to interactive genes because the genetic patterns of gene interac- tions are quite different from that of single-gene in- heritance. Up to now, experimental methods for quickly screening molecular markers linked to inter- active genes and statistical methods and corre- sponding computer softwares for simultaneously analyzing the linkage relationships of multiple mo- lecular markers to an interactive gene have not been available. To solve this problem, in this paper, we propose a strategy for mapping interactive genes using BSA and Mapmaker/Exp. We demonstrate that all interactive genes can be mapped by the 'BSA Mapmaker/Exp' strategy using F2 generation (in a few cases, F3 generation is also needed). As BSA and Mapmaker/Exp have been broadly used in gene mapping studies and are well known by many re- searchers, the strategies proposed in this paper will be useful for practical researches.     

Experimental studies on interaction of water mist with class K fires

Interaction of water mist with cooking oil fires is studied experimentally and theoretically. A LDV/APV system is used to measure the velocity and diameter of water mist at different pressures in the experiments,and the effect of water mist velocity and diameter on fire extinguishment efficiency is investi-gated. The experimental results show that water mist has excellent surface cooling effect; it can control and extinguish cooking oil fires quickly without re-ignition. The critical temperature (Tfo) is calculated by energy balance equation,and the fire plume momentum is calculated and compared with that of water mist in order to determine the critical velocity (νwy) of fire extinguishment. This paper provides references for cooking oil fires extinguishment with water mist.     

电信行业安全生产知识竞赛在京启动

中国通信企业协会受信息产业部电信管理局委托主办的“天融信杯”电信行业安全生产知识竞赛启动仪式在京举行。作为“安全生产月”活动的一个重要组成部分，旨在通过竞赛在全国电信运营业广泛开展安全生产知识的普及教育，促进学习和掌握电信业的安全生产知识，提高电信运营企业员工安全生产意识和技能。     

用于信息安全的光学技术与数字技术

信息安全性牵涉的范围很广，从国防到我们的实际生活各个方面。本书的内容可以应用于安全、验证、识别、跟踪、鉴定。涉及光学科学与工程、数字图像处理、成像技术、基于计算机的信息系统、传感器、检测器和生物测量中各种不同的专门知识，本书的作者是这个领域的国际上公认的杰出人士，书中汇集了该领域最近的关键性突破。     

面向方面的数据库系统

数据库系统是当今大多数组织与系统运行的中心。近几年来主要有：面向对象的技术、正在形成的面向方面的软件开发技术集合。这些技术可以提供系统化的手段去管理（例如分布、安全性和持续性这样的横切关心），但是，利用面向对象这样的常规技术不能够模块化。     

对安全生产形势不能盲目乐观 省政府召开常务会议研究部署安全生产

本刊讯报道2005年12月13日,省长周伯华主持召开省政府常务会议,认真学习胡锦涛总书记、温家宝总理的重要指示,研究部署湖南省安全生产工作。省安监局局长谢光祥和副局长许冬生列席常务会议并作安全生产专题汇报。会议认为,在党中央、国务院正确领导和省委的高度重视下,2005年以来,全省各级各部门齐抓共管,不懈努力,安全生产形势保持了相对稳定,事故总量下降,特大事故减少,安全生产基础工作得到了加强。会议指出,湖南省安全生产工作中的隐患和薄弱环节仍在较大范围内存在,对安全生产形势不能盲目乐观,特别是“两节”将至,也是各类安全事故多…     

为了一个安全的梦——夏玉宜发明安全自动煮饭机的故事

提前半小时给家里打个电话或发个信息，家里的自动煮饭机接到信号之后就开始运转，下班回家，香喷喷的米饭就会呈现在你面前，这真是一个梦。     

李毅中：整合资源尽快形成体系

就应急救援指挥中心组建后的工作以及当前的安全生产应急救援工作，李毅中提出五项要求：一是要强化做好安全生产应急救援工作的责任感。安全生产应急救援是全国应急管理工作的重要内容。     

局部核方法及其应用

核方法是机器学习中一种强有力的学习算法.多个领域的实践表明，通过将领域知识嵌入到核函数中，一般会得到比较好的学习效果. 从微分流形的观点讨论了机器学习中全局信息与局部信息的关系，并提出了一种嵌入局部有意义信息的核方法.文本分类的实验结果表明，与其它几个分类算法相比，它具有较高的性能.     

洗衣粉和胭脂红对泥鳅红细胞核诱变的比较研究

采用急性毒性试验和红细胞微核测试法，研究洗衣粉与胭脂红对泥鳅的急性及遗传毒性的差异，泥鳅在洗衣粉、胭脂红试验液中染毒24h后，采血制片，结果表明三种胭脂红平均LC50。为14170．0mg／L是洗衣粉平均LC50 49．3mg／L的287．4倍；三种胭脂红LC50平均微核率为6．49％。是洗衣粉LC50平均微核率0．67％。的9．7倍，洗衣粉与胭脂红相比较，洗衣粉对泥鳅为高毒级、低诱变剂，胭脂红为低毒级、高诱变剂。