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基于技术经济因素的火电厂空冷塔塔型优化设计

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汽轮机技术 2009年第4期51卷 293-295,306页

作者：崔传涛詹琪军江西丰城发电有限责任公司江西331100

空冷塔是火电厂空冷机组冷端的重要辅助设备,对火电厂安全经济运行有着重要的影响。空冷塔塔型的优化是空冷系统优化设计的一部分。论文基于技术经济因素,对空冷塔塔型的优化做了全面的分析,提出了优化的具体方法,并通过实例对表面式间... 详细信息

空冷塔是火电厂空冷机组冷端的重要辅助设备,对火电厂安全经济运行有着重要的影响。空冷塔塔型的优化是空冷系统优化设计的一部分。论文基于技术经济因素,对空冷塔塔型的优化做了全面的分析,提出了优化的具体方法,并通过实例对表面式间接空冷系统的冷却塔进行了塔型优化计算,绘制了相关的表格及图形,取得了实用性的研究成果。

关键词：火电厂干湿联合冷却系统初始温差优化设计

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高浓度含氟污水处理及利用

磷肥与复肥 2011年第2期26卷 64-66页

作者：占其军湖北大峪口化工有限责任公司

讨论磷肥厂高浓度含氟污水的处理技术。研究结果表明,先用石灰石粉再用生石灰粉、硫酸、絮凝剂处理含氟污水,使之产生氟化钙沉淀,可降低处理成本并达到较好的分离效果,可使污水中ρ(F-)达标(≤10mg/L)。特别指出,好的工艺技术还必须有... 详细信息

讨论磷肥厂高浓度含氟污水的处理技术。研究结果表明,先用石灰石粉再用生石灰粉、硫酸、絮凝剂处理含氟污水,使之产生氟化钙沉淀,可降低处理成本并达到较好的分离效果,可使污水中ρ(F-)达标(≤10mg/L)。特别指出,好的工艺技术还必须有严格的操作责任心才能使污水中F-达标排放。

关键词：磷肥厂高浓度含氟污水处理技术

双向推拉理论视角下河北省乡村教师留任意愿的实证分析

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河北民族师范学院学报 2024年第3期44卷 120-127页

作者：詹珺奇李克军河北民族师范学院教师教育学院河北承德067000 河北民族师范学院河北承德067000

城镇化进程的持续推进使得乡村教师向城市流动的总量增加及青年教师、高学历教师向城市流动,导致结构性缺失的问题,影响乡村教师队伍的稳定与发展。借助双向推拉理论,采用多元线性回归模型,探究乡村教师留任意愿和向城倾向的影响因素。... 详细信息

城镇化进程的持续推进使得乡村教师向城市流动的总量增加及青年教师、高学历教师向城市流动,导致结构性缺失的问题,影响乡村教师队伍的稳定与发展。借助双向推拉理论,采用多元线性回归模型,探究乡村教师留任意愿和向城倾向的影响因素。通过影响因素的比较分析得出:同事关系、婚姻影响、任教科目、学校制度、家校合作、岗前培训、专业发展满意度、职业认同是预测乡村教师留任意愿的重要变量;乡村学校管理、家校合作和乡村教师职业认同感是乡村教育保留教师的内生动力。建议重视学校管理制度建设,充分发挥乡村学校校长领导力;重视乡村家校合作建设,通过地方性知识构建家校互助关系;重视乡村教师乡土情感培养,塑造教师形象和尊师土壤,发挥乡村教育保留乡村教师的主动性与独特优势,提高乡村教师留任率。

关键词：乡村教师留任意愿向城倾向双向推拉理论

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Integrating lipidomics and gut microbiota to study the anti-hyperlipidemia effect of Sargentodoxae Caulis extract

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Traditional Medicine Research 2025年第1期10卷 1-11页

作者： Xiao-Xiao zhang Li Jia Xiu-jun zhan Charity Ngina qing-Rui zhang Xiao-Ge Li qi-Bao Jiang Shi Bai Miao-Miao Jiang National Key Laboratory of Chinese Medicine Modernization Tianjin University of Traditional Chinese MedicineTianjin 301617China Haihe Laboratory of Modern Chinese Medicine Tianjin 301617China School of Medicine Taizhou UniversityTaizhou 318000China.

Background:Sargentodoxae Caulis(SC)is the vine stem of Sargentodoxa Cuneata(Oliv.)Rehd.&*** in ***,and it in traditional Chinese medicine has been known for promoting blood circulation and removing blood stasis as recorded in the ancient book“Illustrated Classics of Materia Medica”.It has been used effectively to treat blood stasis too in modern clinical ***,the anti-hyperlipidemia effect of SC is not fully *** paper aims at exploring the use of SC stems to improve the balance of blood lipids in the body,and its new role in treating ***:The effects of SC extract on hyperlipidemia were explored by combining lipidomics and gut ***,we explored the potential mechanism of SC in treating hyperlipidemia by pathway ***:The results showed that the stem extract of SC could restore the physiological and biochemical indices of hyperlipidemia in mice,as well as repair the morphological and structural damage to *** to the Model group,the SC extract significantly reduced the liver index,epididymal fat index,and Lee’s *** also significantly decreased serum levels of total cholesterol,triglycerides,low-density lipoprotein cholesterol,peroxisome proliferator-activated receptor gamma(PPAR-γ),D-lactate,and free fatty acids,while significantly increasing the relative content of peroxisome proliferator-activated receptor alpha(PPAR-α).These changes were statistically ***-targeted lipidomics,based on LC-MS,were utilized to investigate the lipid metabolism characteristics in serum,liver,and epididymal fat of the *** was observed that,compared to the blank group,the Model group exhibited significant changes primarily in glycerol lipids and *** treatment group also displayed alterations in these lipids.A total of 38,81,and 27 differential lipids were identified in serum,liver,and epididymal fat samples,*** these,14 common differenti

关键词： hyperlipidemia Sargentodoxae Caulis lipidomics intestinal flora

A study on the oxygen-glucose deprivation and glutamate tolerance of ground squirrels and the underlying mechanism

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A study on the oxygen-glucose deprivation and glutamate tole...

中国生理学会第23届全国会员代表大会暨生理学学术大会

作者： Juan-Juan ZHAO,Shan GAO,jun-zhan JING,qi-Ping DONG,Jing-Quan HE,Zhen CHAI~* State Key Laboratory of Biomembrane and Membrane Biotechnology,College of Life Sciences,Peking University,Beijing 100871, China

＜正＞Mammalian hibernators can survive hypoxia better than non-hibernators,but the mechanism is poorly known.A leading cause of stroke is ischemia,which is a shortage of oxygen and *** this study,we compared the neuronal viability of Sprague Dawley rat and a mammalian hibernator-the ground squirrel（Spermophilus dauricus） in the oxygen-glucose deprivation（OGD） injury *** 9-day culture in vitro,the cortical neurons were subjected to 3 h OGD *** MTT result showed that about 13%of rat cortical neurons survived compared with 60%of ground *** next examined neuronal viability of ground squirrels and rats in glutamate injury model,as glutamate excitotoxicity plays a central role in ischemia *** only 30%rat cortical neurons survived 200μmol/L glutamate（24 h）,while about 60%ground squirrel cortical neurons survived. LDH assay confirmed this *** explore the mechanism underlying,we focused on two aspects:the glutamate receptor and signaling *** specific inhibitor of NR2B-containing NMDA receptor ifenprodil could increase neuronal viability of rats,but not ground *** inhibitors of PKA,PKC and CaMKII were used to study the different response to glutamate injury of rats and ground *** blockade of PKA with H-89, rat neuronal viability was significantly increased;while blockade of PKC and CaMKII with chelerythrine chloride and KN-93 respectively,no significant change ***,none of these inhibitors affected neuronal viability of ground squirrels in response to glutamate *** results suggested that cortical neurons of ground squirrels were more tolerant to OGD injury than rats,which was associated with the different responses to glutamate ***2B-containing NMDA receptors and PKA signaling pathway were involved in this process.

关键词： ground squirrels rat cortical neurons OGD glutamate

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新常态下高职院校思政课教学的思考与对策

辽宁高职学报 2016年第10期18卷 53-54,86页

作者：李占文冯俊淇辽宁医药职业学院辽宁沈阳110101

思政课教学是大学生思想政治教育的主渠道,在此基础上分析了新常态下对思政课教学的影响,探讨了新常态下高职院校思政课教学的思考与对策。即:构建理实一体的教学模式,积极推进"三化"教学改革,实行启发式和讨论式双向互动的教学模式,要... 详细信息

思政课教学是大学生思想政治教育的主渠道,在此基础上分析了新常态下对思政课教学的影响,探讨了新常态下高职院校思政课教学的思考与对策。即:构建理实一体的教学模式,积极推进"三化"教学改革,实行启发式和讨论式双向互动的教学模式,要把职业精神元素融入思政课教学内容,改变现行思政课考试方法。

关键词：高职院校思想政治理论课新常态教学

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Staged dendrite suppression for high safe and stable lithium-sulfur batteries

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Journal of Energy Chemistry 2025年第1期100卷 674-683页

作者： jun Jiang Zhenjie Lu Yanwen Ding Shujun Liu Zhijie qi Tian Tang Yunfan zhang Zhiyuan Ma Jingwen Sun Liang Xue Wenyao zhang Pan Xiong Xin Wang junwu Zhu Yongsheng Fu Key Laboratory for Soft Chemistry and Functional Materials of Ministry of Education Nanjing University of Science and Technology Jiangsu Pylon Battery Co.Ltd

The unavoidable dendrite growth and shuttle effect have long been stranglehold challenges limiting the safety and practicality of lithium-sulfur ***,we propose a dual-action strategy to address the lithium dendrite issue in stages by constructing a multifunctional surface-negatively-charged nanodiamond layer with high ductility and robust puncture resistance on polypropylene （PP） *** uniformly loaded compact negative layer can not only significantly enhance electron transmission efficiency and promote uniform lithium deposition,but also reduce the formation of dendrite during early deposition *** importantly,under the strong puncture stress encountered during the deterioration of lithium dendrite growth under limiting current,the high ductility and robust puncture resistance（145.88 MPa） of as-obtained nanodiamond layer can effectively prevent short circuits caused by unavoidable lithium *** Li||Li symmetrical cells assembled with nanodiamond layer modified PP demonstrated a stable cycle of over 1000 h at 2 mA cm-2with a polarization voltage of only 29.3 ***,the negative charged layer serves as a physical barrier blocking lithium polysulfide ions,effectively mitigating capacity *** improved cells achieved a capacity decay of only 0.042%per cycle after 700 cycles at 3 C,demonstrating effective suppression of dendrite growth and capacity attenuation,showing promising prospect.

关键词： Ductility

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传统法DAP生产中洗涤塔的结垢问题

磷肥与复肥 2008年第5期23卷 33-34页

作者：占其军余文成大峪口化工有限责任公司

350kt/aDAP生产装置干燥、造粒尾气采用两级循环洗涤,介绍其洗涤流程,分析洗涤塔结垢原因及解决措施,取得尾气氨达标排放的效果,尾气氨<0.03g/m3。

关键词：磷酸二铵装置尾气洗涤结垢氨达标排放

宁夏毛乌素沙地不同密度柠条林对土壤结构及植物群落特征的影响

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水土保持研究 2005年第6期12卷 31-32,35页

作者：王占军蒋齐潘占兵王顺霞张虎宁夏农林科学院荒漠化治理研究所银川750002 甘肃农业大学草业学院兰州730070

通过对种植不同密度的柠条对退化草原恢复效应的研究,结果表明随着柠条带间距的增加,土壤的物理性质得到极大的改善,容重逐渐减小,土壤的毛管孔隙度、总孔隙度、透气性、排水能力、则呈增加的趋势,其中10 m带距的增幅最大。植被恢复后... 详细信息

通过对种植不同密度的柠条对退化草原恢复效应的研究,结果表明随着柠条带间距的增加,土壤的物理性质得到极大的改善,容重逐渐减小,土壤的毛管孔隙度、总孔隙度、透气性、排水能力、则呈增加的趋势,其中10 m带距的增幅最大。植被恢复后柠条带间土壤水分呈现10 m>7 m>对照>4 m的趋势。建立柠条林后随着植物种类的增加,个体重要值相对下降,各项生态指数不断升高。说明随着带间距的增加,群落结构在逐渐发生变化,使原来的荒漠化群落结构变得相对复杂并逐渐向稳定阶段发展。

关键词：毛乌素沙地柠条土壤特性群落特征

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