摘要：为了进一步提高甜椒核雄性不育两用系育种效率,利用AB91核雄性不育候选基因Capana05g000747的突变位点设计KASP分子标记,以转育甜椒核雄性不育两用系的F_(2)群体及育成的两用系为试验材料,对植株的育性进行基因型检测,并检验该标记的准确性。结果表明,该分子标记与甜椒核雄性不育的育性呈现共分离,在苗期对F_(2)植株的基因型进行早期鉴别,分型准确率分别为98.91%和99.04%,可有效淘汰基因型为MSMS的可育株,筛选出基因型为MSms的可育株直接用于不育系的转育,转育出了黄色和红色甜椒核雄性不育两用系AB91-HTJ412和AB91-HLD163。在苗期对两用系群体的育性基因型进行早期鉴别,可有效淘汰基因型为MSms的可育株,选留基因型为msms的不育株直接用于杂交组合选配及杂交制种。

摘要：视觉测量是采用机器视觉精确测量和定位空间几何尺寸的技术,能够有效提高工业检测的精度和效率。运用基于HALCON和VC++混合编程方法开发了电子元件视觉测量软件工具,实现了测量图像采集与显示、视觉测量等核心算法及其功能;设计并构建了由工业数字摄像机、工业镜头、光源等仪器组成的电子元件视觉测量硬件平台,并依此对软件工具的可靠性和稳定性进行试验验证,结果表明系统检测速度快、检测精度达到预期技术指标。

摘要：在过去40年,我国不断探索以城乡统筹发展带动区域协调发展的新途径。分析研究城市型绿道和乡村型绿道的差异性,不仅对绿道规划设计提供理论指导,也对统筹城乡规划发展具有一定的实践意义。本文从规划策略、规划设计方法、建成效益等方面对城市型绿道和乡村型绿道进行了比较,并讨论了它们与城乡统筹发展战略的关系。

摘要：在瓦斯抽放过程中,水与瓦斯在抽放管路内一起流动,部分水甚至以气体形式存在,影响瓦斯抽放效果。目前使用的水与瓦斯分离器是在正常工作状态下设计的,当抽放管路停止工作时,瓦斯溢出。本设计的水与瓦斯分离器使水与瓦斯自动分离、排出水量,抽放管路停止工作时,瓦斯不溢出。

摘要：高地应力对地下矿体开采有很大影响,是矿体开采围岩体不稳定的主要因素之一,根据矿山地应力测试结果,测试数据可为矿山井巷设计以及井巷支护提供依据。以高应力山区某矿山为研究案例,开展了井下地应力大小和分布的现场测量工作,分析了地应力分布特征规律。研究结果表明:现场测量的3个测点最大主应力方向均为NEE向;3个测点最大主应力的倾角均较小,该区域仍以水平构造应力为主导;现场测量的3个测点最大应力介于7.66~11.12 MPa之间,均高于同埋深的自重应力;各测点地应力的大小和方向随埋深变化有所差异,但没有产生突变,地应力场分布呈现出较明显的方向差异性。上述测试的分析结果为矿山井巷合理布置以及井巷支护提供理论支撑,所测测点均处于一般地应力状态,当开采埋深大于400 m后,所测测点转变为高地应力状态。

摘要：高频感应加热有3个效应:集肤效应、邻近效应和尖角效应.在设计制造感应圈时必须匹配好这3个效应.下面就齿轮和蜗轮高频感应圈的区别加以讨论.1 齿轮的高频感应圈齿轮高频感应圈的高度,最好比齿部的宽度小一点.如果是相等或稍高一点,则由于尖角效应使齿部两端尖角处过烧,淬火时容易形成裂纹.感应圈的内径是一个重要参数.如图1所示.一般认为a的尺寸即间隙越小越好,效率越高,其实不然.根据多年的实践经验,以a/A值来度量间隙尺寸较为合理,且a/A＝0.25～0.3时效果最佳.a/A值较小时,齿顶的加热速度会过快,造成齿顶和齿根的温差很大,淬火时易形成齿顶裂纹,而节圆和齿根部位硬度不足,不耐磨,或齿根歪扭而报废.如果a/A值过大,则效率低,且加热深度过深,甚至会使齿部全部加热透,达不到表面淬火的目的.不过适当加大a/A值,可以达到中频感应加热淬火的效果.

摘要：为消除某锂辉石矿山3600 m中段采场上部硐室顶板围岩的安全隐患,对9种不同结构参数的C25混凝土人工点柱进行稳定性研究。以某一具体采场开采工程为研究背景,基于矿柱面积承载与普氏拱理论,计算出人工点柱的安全系数,并采用数值模拟手段模拟了采场开挖过程,分析了不同结构参数人工点柱附近顶板围岩位移及塑性区分布规律。研究结果表明:人工点柱的间距与上部硐室顶板围岩竖直位移呈正相关;人工点柱尺寸大小与上部硐室顶板围岩竖直位移呈负相关。根据安全系数、位移及塑性区计算结果,推荐采用间距为6 m、尺寸为3.0 m×3.0 m的人工点柱,能够对上部硐室顶板围岩起到良好的支撑作用。

摘要：当今食品安全事故频频发生，与餐饮业流程布局设计不科学合理有关，不规范易发生食物中毒等。在餐饮《食品经营许可证》现场核查中，发现部分餐饮申请时流程设计不规范，常是先装修后办证，既增加整改难度，又增加业主费用等问题。为了解我市餐饮流程布局设计的规范监管情况，指导今后的预防性审查，降低业主的整改成本，降低食物中毒事故发生率，

摘要：With the promotion of agricultural ecological civilization construction in China, agricultural ecological security has received increasing attention. How to ensure agricultural ecological security has become a great concern for many scholars. As an important agricultural province in China, Hubei is of great significance to Chinese food security and agricultural sustainable development. This paper aims to establish an index system of agricultural ecological security and security classification of Hubei via Analytic Hierarchy Process and Pressure-State-Response methods. An evaluation of agricultural ecological security in Hubei, with a base of the national average value in 2015, reveals that the security degree has increased by 0.07566 from 0.90150 in 2005 to 0.97716 in 2015. Results show that agricultural ecological security in Hubei has improved but failed to reach the national average and there is still large space for improvement of the security level, considering a trend of deterioration in some indexes, such as per capita water resources, population density, per unit area pesticide load of farmland, forest coverage, grassland degradation rate and average annual precipitation. Influencing factors, especially population spatial distribution, misconduct in agricultural production, insufficient ability in agricultural natural disaster prevention, deficiency of agro-ecological technology of agricultural ecological security in Hubei are analyzed. For improvement of the degree of agricultural ecological security in Hubei, some countermeasures and suggestions are discussed.

摘要：Shuttle effect,poor conductivity and large volume expansion are the main factors that hinder the practical application of sulfur ***,rational structure designing of carbon-based sulfur hosts is the most effective strategy to address the above ***,the preparation process of carbon-based sulfur hosts is usually complex and ***,it is necessary to develop an efficient and cost-effective method to fabricate carbon hosts for high-performance sulfur ***,we reported the fabrication of a bio-derived nitrogen doped porous carbon materials(BNPC)via a molten-salt method for high performance sulfur *** long-range-ordered honeycomb structure of BNPC is favorable for the trapping of polysulfide(PS)species and accommodates the volumetric variation of sulfur during cycling,while the high graphitization degree of BNPC favors the redox kinetics of sulfur ***,the nitrogen doping content not only enhances the electrical conductivity of BNPC,but also provides ample anchoring sites for the immobilization of PS,which plays a key role in suppressing the shuttle *** a result,the S@BNPC cathode exhibits a high initial specific capacity of 1189.4 mA·h/g at *** 300 cycles,S@BNPC still maintains a capacity of 703.2 mA·h/g which corresponds to a fading rate of 0.13%per cycle after the second *** work offers vast opportunities for the large-scale application of high performance carbon-based sulfur hosts.