Agronomic performance of high oleic,low linolenic soybean in Tennessee

Soybean oil hydrogenation alters the linolenic acid molecule to prevent the oil from becoming rancid, however, health reports have indicated trans-fat caused by hydrogenation, is not generally regarded as safe. Typical soybeans contain approximately 80 g kg⁻¹ to 120 g kg⁻¹ linolenic acid and 240 g kg⁻¹ of oleic acid. In an effort to accommodate the need for high-quality oil, the United Soybean Board introduced an industry standard for a high oleic acid greater than 750 g kg⁻¹ and linolenic acid less than 30 g kg⁻¹ oil. By combing mutations in the soybean plant at four loci, FAD2-1A and FAD2-1B, oleate desaturase genes and FAD3A and FAD3C, linoleate desaturase genes, and seed oil will not require hydrogenation to prevent oxidation and produce high-quality oil. In 2017 and 2018, a study comparing four near-isogenic lines across multiple Tennessee locations was performed to identify agronomic traits associated with mutations in FAD3A and FAD3C loci, while holding FAD2-1A and FAD2-1B constant in the mutant (high oleic) state. Soybean lines were assessed for yield and oil quality based on mutations at FAD2-1 and FAD3 loci. Variations of wild-type and mutant genotypes were compared at FAD3A and FAD3C loci. Analysis using a generalized linear mixed model in SAS 9.4, indicated no yield drag or other negative agronomic traits associated with the high oleic and low linolenic acid genotype. All four mutations of fad2-1A, fad2-1B, fad3A, and fad3C were determined as necessary to produce a soybean with the new industry standard (>750 g kg⁻¹ oleic and <30 g kg⁻¹ linolenic acid) in a maturity group-IV-Late cultivar for Tennessee growers.     

PLC在MK9-MAKS卷烟机组国产化电气改造中的应用

本文介绍了PLC（ProgrammableLogicController)在MK9卷烟机国产化改造中的应用，并提出了最大限度的用软件取代原机硬件电路提高可靠性的一种方法。     

咖啡壶的失效评估

本文对某型咖啡壶样品进行了分解和剖析,对各元、器件的特性、工作原理与过程进行了研究.通过工作试验、模拟试验,对整个系统的工作流程进行了实测;在预制失效的情况下,对系统的应激反应进行了监测;根据元件的材料、结构特点和使用环境等因素对其失效模式进行了分析.在以上工作的基础上,采用预先危险分析、失效模式与效果分析和故障树分析等可靠性分析手段,对咖啡壶系统进行了失效评估.评估结果表明,咖啡壶在结构、系统、安全防护设计等方面较为合理,咖啡壶在意外发生时安全保护系统较为完善,符合安全设计准则;咖啡壶金属制弹簧类元件普遍存在抗腐蚀性能差的问题,电阻保持架的加工质量存在问题.     

NUMERICAL SIMULATION OF PROPAGATION AND BREAKING PROCESSES OF A FOCUSED WAVES GROUP

A two-dimensional numerical wave flume is developed to study the focused waves group propagation and the consequent breaking processes. The numerical model is based on the Reynolds-Averaged Navier-Stokes (RANS) equations, with the standard k-ε turbulence model to simulate the turbulence effects. To track the complicated and broken free-surface, the Volume Of Fluid (VOF) method is employed. The numerical model combines the "Partial Cell Treatment (PCT)" method with the "Locally Relative Stationary (LRS)" concept to treat the moving wave paddle so that various waves can be generated directly in a fixed Cartesian grid system. The theoretical results of the linear and nonlinear waves are used to validate the numerical wave flume firstly, and then a plunging breaking wave created by a focused waves group is simulated. The numerical results are compared to the experimental data and other simulation results, with very good agreements. The turbulence intensity, the flow field and the energy dissipation in the breaking processes are analyzed based on the numerical results. It is shown that the present numerical model is efficient and accurate for studying the waves group generation, the waves packet propagation, and the wave breaking processes.     

混合QoS感知的服务组合群决策

为解决具有混合服务质量(QoS)和多决策者的服务组合难题,基于多属性群决策理论,提出了混合QoS感知的web服务组合群决策(GDMA_HQoS)算法,该算法支持多决策者和具有混合QoS信息(实数、区间数、三角模糊数、直觉模糊数)的服务组合.给出了新QoS指标描述方法和QoS聚合算法.实验结果表明,该算法能较好地应用在混合QoS和多决策者的服务组合中,同时也具有较高的执行效率.     

决策支持系统中决策者主导作用的研究

在分析了决策支持系统（ＤＳＳ）的特点后，文章探讨了决策者在系统开发中的作用，从ＤＳＳ应适应用户的风格、ＤＳＳ的个性、ＤＳＳ的动态性、人机界面及用户培训等方面，研究如何发挥决策者在ＤＳＳ中的主导作用．     

基于ERP的卷烟制造企业智能信息系统

结合卷烟制造企业的背景和需求，分析了该行业的特点，应用ERP原理，设计并实现了适应烟厂管理特殊要求的智能信息系统；并依照系统总体设计日标和原则，给出了相应的系统结构与功能模块；系统可提供支持用户决策和全面管理的强大功能，实现企业组织流程的整体优化。     

基于PIC16F877A的咖啡机智能温控系统

分析了传统滴漏式咖啡机存在的问题,提出了一种基于Microchip公司8位单片机PIC16F877A的智能咖啡机温控系统方案.应用该方案的智能咖啡机可根据咖啡量的不同而进行自调节式控温,具有较高的恒温精度.     

基于数据仓库和OLAP的卷烟质量管理系统

在传统的以事务处理为基础的卷烟质量管理系统中,数据异构、分散难于处理。如何将这些数据集成,以便于对质量数据做深层次分析,为管理者提供决策支持是卷烟质量管理中迫切需要解决的问题。为此,将数据仓库和联机分析处理技术(OLAP)引入卷烟质量管理系统,提出了基于数据仓库和OLAP的卷烟质量管理系统的体系结构,并利用星型结构实现了卷烟质量管理系统多维数据模型。     

卷烟机平准器对烟支空头率影响的探究

通过对比三槽型平准器和三深三浅型平准器在相同生产条件下的烟支空头剔除率和部分烟支物理指标值,探究了他们对烟支空头率的影响。结果表明,三深三浅型平准器在烟支空头率控制方面,比三槽型平准器更有优势,烟支空头率相差7.8%;在同样降低了烟支空头率的情况下,三深三浅型平准器比三槽型平准器具有更好的质量稳定性。