发电厂厂用系统电气调试典型案例分析

列举了发电厂厂用系统电气调试过程中出现的典型案例,分析了造成零序过流问题、PC段控制电源问题等的原因,指出阀门调试的一些注意事项。     

乐安风力发电场对鸟类的影响研究

发展风力发电是发展低碳经济的需要,但建设风电场可能会对生态环境和鸟类造成一定的影响。以鸟类资源调查为基础,结合乐安风电场建设项目,研究了风电场对鸟类栖息、觅食、迁徙以及存活的影响,提出了有关环保措施以减少建设风电场对鸟类造成影响,实现人与自然的和谐发展。     

槽式太阳能电站集热管热性能测试及回归分析

利用热平衡法对桑普生产的槽式太阳能电站集热管的热性能进行了实验测试。实验结果显示,集热管内金属吸热管温度为143.6℃、200.9℃、267.2℃和290.3℃时,集热管的漏热量为21.2 W/m、39.8 W/m、50 5 W/m、88.8 W/m。根据集热管漏热的热物理过程,提出了H=f(T_(abs),T_(amb))=aT_(abs)~4+bT_(amb)~4b+cT_(amb)形式的回归模型,并对所测试真空管漏热量进行了回归分析,得到漏热量的回归数学表达式H=9.376×10~(-10)T_(abs)~4-8.685×10~(-10)T_(amb)~4-2.309×10~(-7)T_(amb)将回归模型应用于美国国家可再生能源实验室所测试的两种集热管,回归值与实验值符合较好,说明所提出的回归模型较合理。     

Synthetic Strategies for (−)‐Cannabidiol and Its Structural Analogs

(?)‐Cannabidiol ((?)‐CBD), a non‐psychoactive phytocannabinoid from Cannabis, and its structural analogs have received growing attention in recent years because of their potential therapeutic benefits, including neuroprotective, anti‐epileptic, anti‐inflammatory, anxiolytic, and anti‐cancer properties. (?)‐CBD and its analogs have been obtained mainly based on extraction from the natural source; however, the conventional extraction‐based methods have some drawbacks, such as poor quality control along with purification difficulty. Chemical‐synthetic strategies for (?)‐CBD could tackle these issues, and, additionally, generate novel (?)‐CBD analogs that exhibit advanced biological activities. This review concisely summarizes the historic and recent milestones in the synthetic strategies for (?)‐CBD and its analogs.     

碱性蛋白酶Alcalase水解WGP制备ISWGPH的研究

本文采用ｐＨ－ｓｔａｔ法测定ＷＧＰ的水解度。正交实验确定了Ａｌｃａｌａｓｅ水解ＷＧＰ的最佳工艺条件为：Ｔ＝５０℃；ｐＨ－８．５；「Ｓ」＝１０％；「Ｅ／Ｓ」＝２４ＡＵ／ｋｇ蛋白质；ｔ＝３００ｍｉｎ。将ＷＧＰ水解物的Ｐ 到４．０，离 离后上清液，经活性碳处理处理和干燥后得到了等电点可溶性ＷＧＰ水解－ＩＳＧＰＨ。     

火电厂建设项目后评价指标体系及其内容构建

论述了当前火力发电厂建设项目后评价特点，根据项目后评价在项目管理中的积极的动态反馈机制和当前后评价在实际应用过程中存在的问题，构建了火力发电厂建设项目后评价的方法，指标体系及其内容。     

浅谈如何有效降低焦化厂除尘站PLC故障

简要介绍了PLC系统在太原煤气化焦化厂的应用情况,分析了PLC系统在使用中出现故障的原因,并提出了相应的改进措施。     

热机专业阀门压力值自动计算程序的应用

介绍了在大型发电厂工程设计中,根据三维系统设计原理,利用工程数据库,EXCEL电子表格,结合电厂KKs编码技术,加上EXCEL VBA编程技术,并采用数学插值法扩充曲线表的方法,实现了热机专业阀门压力值的自动计算的应用。     

CONTROLLOGIX系统在潘北选煤厂的应用

选煤厂基于Controllogix系统的自动化特点;详细阐述了本厂集中控制的逻辑思路;对选煤厂的集控联锁的认识及实践。     

Inhibitive effect of Xylopia ferruginea extract on the corrosion of mild steel in 1M HCl medium

The alkaloid content of the leaves and stem bark of Xylopia ferruginea plant was isolated and tested for its anticorrosion potential on mild steel corrosion in a hydrochloric acid medium by using electrochemical impedance spectroscopy,potentiodynamic polarization measurement,scanning electron microscopy(SEM),and Fourier transform infra red(FTIR) analysis.The experimental results reveal the effective anticorrosion potential of the plant extract.The mixed mode of action exhibited by the plant extract is evidenced from the polarization study.SEM images proof the formation of a protective layer over the mild steel surface,and this is supported by the FTIR study.The possible mode of the corrosion inhibition mechanism has also been discussed.