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预应力锚杆在岩土边坡加固工程中的应用研究

价值工程 2024年第18期43卷 133-135页

作者：王爱华山东省水工环地质工程有限公司济南250014

锚固技术能够增强边坡岩土体的整体性,进而提升其稳定性和抗滑性能,能大幅提高在恶劣环境下的行车安全,相较于其他技术,其效率和稳定性更优。该技术无需大量维护即可保持耐久性,特别适用于高陡边坡整治,在经济和工期方面具有显著优势。... 详细信息

锚固技术能够增强边坡岩土体的整体性,进而提升其稳定性和抗滑性能,能大幅提高在恶劣环境下的行车安全,相较于其他技术,其效率和稳定性更优。该技术无需大量维护即可保持耐久性,特别适用于高陡边坡整治,在经济和工期方面具有显著优势。据统计,采用预应力锚杆加固高陡边坡可降低20%~30%成本,缩短50%工期。本文结合黄金99浆水泉路居住区C地块配套设施项目(条形地块)破损山体治理工程为例,深入探讨了预应力锚杆在岩土边坡加固中的应用及效果,旨在为相似工程提供借鉴。

关键词：预应力锚杆边坡加固山体治理

Numerical Simulation of Combustion Characteristics in High Temperature air Combustion Furnace

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Journal of Iron and Steel Research International 2009年第2期16卷 6-10页

作者： wang ai-hua Cai Jiu-ju XIE Guo-wei SEPA Key Laboratory on Eco-Industry Northeastern University Shenyang 110004 Liaoning China

The influences of air preheating temperature, oxygen concentration, and fuel inlet temperature on flame properties, and NOx formation and emission in the furnace were studied with numerical simulation. The turbulence behavior was modeled using the standard k-ε model with wall function, and radiation was handled using discrete ordinate radiation model. The PDF （probability density function） /mixture fraction combustion model was used to simulate the propane combustion. Additionally, computations of NOx formation rates and NOx concentration were carried out using a post-processor on the basis of previously calculated velocities, turbulence, temperature, and chemical composition fields. The results showed that high temperature air combustion （HiTAC） is spread over a much larger volume than traditional combustion, flame volume increases with a reduction of oxygen concentration, and this trend is clearer if oxygen concentration in the preheated air is below 10%. The temperature profile becomes more uniform when oxygen concentration in preheated air decreases, especially at low oxygen levels. Increase in fuel inlet tempera- ture lessens the mixing of the fuel and air in primary combustion zone, creates more uniform distribution of reactants inside the flame, decreases the maximum temperature in furnace, and reduces NOx emission greatly.

关键词： high temperature air combustion flame property temperature distribution NOx formation NOx emission

2018—2022年海南某医院住院部第二类精神药品使用情况分析

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中国药物依赖性杂志 2024年第3期33卷 267-271页

作者：孙莹郭妍王爱华刘琼中国解放军总医院海南医院海南三亚572000

目的对海南某医院住院部第二类精神药品的使用情况进行分析,促进临床合理用药。方法提取2018—2022年海南某医院住院部第二类精神药品的使用信息,对其销售金额、用药频度、日均药费、B/A值等数据进行分析。结果2018—2021年该院住院部... 详细信息

目的对海南某医院住院部第二类精神药品的使用情况进行分析,促进临床合理用药。方法提取2018—2022年海南某医院住院部第二类精神药品的使用信息,对其销售金额、用药频度、日均药费、B/A值等数据进行分析。结果2018—2021年该院住院部第二类精神药品用量呈逐年减少趋势,而2022年使用量达到新高。第二类精神药品销售金额浮动较大,2022年的金额占比最高。销售金额排名前三位的是酒石酸布托啡诺注射液、地佐辛注射液及咪达唑仑注射液。历年的DDDs排序变化较小,排序第一的为艾司唑仑,其次为氨酚羟考酮。DDDc保持平稳,地佐辛注射液、酒石酸布托啡诺注射液和咪达唑仑注射液始终位于前三位,其中地佐辛注射液连续五年居第1位。艾司唑仑片和酒石酸唑吡坦片的B/A大于1.00,说明该药价格低廉,患者接受度较高。酒石酸布托啡诺注射液和地佐辛注射液的B/A<1.00,说明该药价格偏贵,患者接受度低。其余药品的B/A接近1.00。结论该院住院部第二类精神药品的临床应用基本合理,继续加强监督和管理,促进科学、有效、经济及合理地使用第二类精神药品。

关键词：第二类精神药品销售金额 DDDs DDDc B/A 合理用药

Characteristics and mechanism of low permeability beach-bar sandstone reservoir of Es4 in Dongying sag

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Mining Science and Technology 2009年第6期19卷 788-795页

作者： wang hua-ai ZHONG Jian-hua ZHONG Fu-ping NIU Yong-bin wang Pei-jun College of Geo-Resources and Information China University of Petroleum Dongying Shandong 257061 China Sinopec International Petroleum Exploration and Production Corporation Beo＇ing 100083 China Guangzhou Institute of Geochemistry Chinese Academy of Sciences Guangzhou Guangdong 510640 China

Core and cast sections observation and description,and logging,scanning electron microscope and core lab analysis data etc. were applied to the present research of the characteristics and mechanism of low permeability beach-bar sandstone reservoir of Es4 in Dongying sag. The results indicated the reservoir has the characteristics of middle-low pores,low-permeability,low compositional and structural maturity,and thin throat. The low-permeability is mainly due to sedimentation (fine particles and argillaceous inter beds) and diagenesis (compaction,cementation,and dissolution). The cementation reduced the physical property of the reservoir mainly by carbonate cementation,quartz autogeny and enragement,and autogeny clay. Clay minerals usually jam the pores by filling holes,close-fitting the wall of hole,bridging,wrapping grains,and separate attaching the pores and so on. The dissolution is insufficient so as not to improve the porosity and permeability of the reservoir obviously. So it is also an important factor of forming low-permeability reservoir.

关键词： beach-bar sandstone low-permeability reservoir characteristics sedimentation diagenesis

Affecting Factors and Improving Measures for Converter Gas Recovery

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Journal of Iron and Steel Research International 2007年第6期14卷 22-26页

作者： wang ai-hua Cai Jiu-ju LI Xiu-ping wang Ding ZHOU Qing-an School of Materials and Metallurgy Northeastern University Shenyang 110004 Liaoning China Energy Department Baoshan Steel Co Ltd Shanghai 201900 China

To change the undesirable present situation of recovering and using converter gas in steel plants in China, the basic approaches to improving the converter gas recovery rate were analyzed theoretically along with the change curves of the converter gas component content, based on the converter gas recovery system of Baosteel No. 2 steel- making plant. The effects of converter device, raw material, air imbibed quantity, recovery restricted condition, and intensity of oxygen blowing on the converter gas recovery rate were studied. Among these, the effects of the air im bibed quantity, recovery restricted condition, and intensity of oxygen blowing are remarkable. Comprehensive measures were put forward for improving the converter gas recovery from the point of devices, etc. , and good results were achieved.

关键词： steel plant converter gas recovery rate affecting factor

Changes of Polyphenols in Tobacco Leaves During the Flue-Curing Process and Correlation Analysis on Some Chemical Components

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Agricultural Sciences in China 2006年第12期5卷 928-932页

作者： GONG Chang-rong wang ai-hua wang Song-feng Henan Agricultural University Zhengzhou 450002 P.R.China Tobacco Research Institute Chinese Academy of Agricultural Sciences （CAAS）/Qingzhou Tobacco Reasearch oflnstitute China National Tobacco Leaf Corporation （CNTC） Qingdao 266101 P.R.China

The changes of polyphenols in tobacco leaves during the flue-curing process and correlation analysis on some chemical components were studied. Leaf samples were taken from different tobacco-producing regions in Henan Province, China. The results indicated that the content of total phenols increased during the first 24 h of curing, and then decreased. It reached the lowest value at 72 h of curing and increased rapidly after that. The content of chlorogenic acid also increased during 0-24 h of curing. But the lowest point occurred at 60 or 72 h of curing and then it increased till the end of the curing process. The content of mtin generally increased with curing, and showed little fluctuations. The changes of PPO and POD activity were the opposite. Rutin was found to have a highly significant positive correlation with total sugar （r=0.822^＊＊）, but a highly significant negative correlation with starch, nicotine, and protein.

关键词： tobacco (Nicotiana tobacum L) flue-curing total phenols chlorogenic acid mtin chemical components

Multi-Period Optimal Distribution Model of Energy Medium and Its Application

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Journal of Iron and Steel Research International 2011年第8期18卷 37-41页

作者： ZHANG Qi TI Wei Cai Jiu-ju DU Tao wang ai-hua SEPA Key Laboratory on Eco-Industry Northeastern University Shenyang 110819 Liaoning China huaneng Fuxin Wind Power Generation Limited Liability Company Fuxin 123000 Liaoning China

A mathematical model of optimal energy medium distribution in steelmaking process is formulated. In this model, three kinds of important energy mediums including byproduct gases, steam and electricity are considered, and the objective function accounts for both the change of generation and consumption of the byproduct gases and the demand of low （or middle） pressure steam and electricity for each period to maximize the benefit of products cost and minimize the consumption of energy. The results indicate that the optimal distribution scheme of byproduct gases, middle pressure steam, low pressure steam and electricity is achieved and case study shows that 6% of operation cost is reduced by using the proposed model comparing with the previous model.

关键词： energy medium byproduct gas multi-period optimal distribution energy saving

热带喀斯特季节性雨林12个树种木质部栓塞抗性与其解剖结构及相关性状间的关系

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植物生态学报 2024年第7期48卷 888-902页

作者：马琳巢林何雨莎李忠国王爱华刘晟源胡宝清刘艳艳南宁师范大学地理与海洋研究院北部湾环境演变与资源利用教育部重点实验室广西地表过程与智能模拟重点实验室南宁530001 中国林业科学研究院热带林业实验中心广西友谊关森林生态系统国家定位观测研究站广西凭祥532600 广西弄岗国家级自然保护区管理中心广西龙州532400

在全球气候变化背景下,干旱诱导木质部栓塞被认为是驱动树木死亡的主要因素。因此,分析木质部栓塞抗性(用导水率损失50%的水势(P_(50))表示)的内在解剖决定因素对于理解其结构与功能间的机制具有重要意义,为气候变化背景下植被恢复树种... 详细信息

在全球气候变化背景下,干旱诱导木质部栓塞被认为是驱动树木死亡的主要因素。因此,分析木质部栓塞抗性(用导水率损失50%的水势(P_(50))表示)的内在解剖决定因素对于理解其结构与功能间的机制具有重要意义,为气候变化背景下植被恢复树种选择提供理论依据。该研究测定广西弄岗喀斯特森林内12个主要常绿树种的木质部导管直径、导管组指数、组分占比、纹孔形态和纹孔膜超微结构,同时结合木质部储水特征(如木材密度和饱和含水量),综合分析干旱诱导木质部栓塞抗性与其解剖结构以及储水特征之间的关系。结果显示:(1)P_(50)与导管直径、密度、导管组指数以及组分占比间的相关性均不显著;(2)P_(50)形态特征以及纹孔膜厚度和纹孔腔深度等特征间的相关性均不显著;(3)P_(50)与木材密度显著负相关,与饱和含水量边缘显著正相关,即木材密度较大、饱和含水量较低的树种表现出较强的栓塞抗性。研究结果表明,运用单一的解剖结构来评估栓塞抗性是不全面的;此外,木质部水分存储能力与栓塞抗性之间的权衡关系对于深入理解喀斯特植物耐旱性的内在结构机制以及多元化的水分利用策略具有重要的生态学意义。

关键词：木材密度饱和含水量木质部导管纹孔纹孔膜

A highly selective electrochemical impedimetric sensor for imidacloprid determination based on WO_(3)/MoS_(2)nanosheets/molecularly imprinted polymer composite

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Rare Metals 2024年第3期43卷 1309-1315页

作者： Long-hua Ding Ya-Wen wang Qiu-Wen Li Li-Li Zhang ai-Zhu wang Institute for Advanced Interdisciplinary Research School of Chemistry and Chemical EngineeringUniversity of JinanJinan250022China HCA Florida Healthcare Westside/Northwest Hospital Internal Medicine PlantationFL33324USA

In this study,an electrochemical impedimetric sensor was established for imidacloprid(IMI)detection based on WO_(3)/MoS_(2)and molecular imprinted polymer(MIP)*** layer was prepared on electrode surface by electropolymerization of o-phenylenediamine(o-PD)in the presence of IMI template,which ensured the specific rec-ognization toward IMI.

关键词： electrochemical polymer polymerization