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矿井斜坡道交通监控系统建设及应用研究

世界有色金属 2024年第13期 19-21页

作者：张东永孙越张传志金川集团公司二矿区甘肃金川737100

矿井斜坡道作为矿井的主要运输巷道,占据矿井巷道中的重要地位,矿井运输依此展开,而矿井运输根据生产过程中的运输任务的不同,主要分为主要运输和辅助运输。矿井的辅助运输内容主要包括设备,材料、人员及废石的运输。而无轨胶轮车作为... 详细信息

矿井斜坡道作为矿井的主要运输巷道,占据矿井巷道中的重要地位,矿井运输依此展开,而矿井运输根据生产过程中的运输任务的不同,主要分为主要运输和辅助运输。矿井的辅助运输内容主要包括设备,材料、人员及废石的运输。而无轨胶轮车作为矿井辅助运输的重要手段,自20世纪90年代起,从国外引进国内,一直在辅助运输领域占据重要地位,并为矿井生产取得了良好的经济效益。大多数矿井的胶轮车斜坡道宽度较窄,一般只能容一辆车通行,而随着生产运输任务的增长,运输车辆往往有数十辆甚至上百辆之多。如果各岔道口或错车场口未设信号灯,特别在巷道存在一定坡度的情况下,相向对开的车辆之间往往相互看不清,容易在某区域内引起车辆阻塞,导致车辆的频繁倒车,也必然造成油料浪费、备件损耗、运输效率低下,更严重的还将导致某些安全事故。斜坡道交通监控系统就是针对这一情况而设计开发的计算机监控系统。

关键词：斜坡道监控系统建设研究

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Expression Analysis of HMW-GS 1Bx14 and 1By15 in Wheat Varieties and Transgenic Research of 1By15 Gene

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Agricultural Sciences in China 2006年第10期5卷 725-735页

作者： XU Tao zhang Xue-yong dong Yu-shen Key Laboratory of Crop Germplasm and Biotechnology Ministry of Agriculture/Institute of Crop Sciences Chinese Academy of AgriculturalSciences The National Facility for Crop Gene Resources and Genetic Improvement Beijing 100081 P.R.China

High-molecular-weight glutenin subunits （HMW-GSs）, one class of seed storage proteins in wheat, play an important role in determining bread-making quality of flour. More and more proves support that HMW-GS- 1Bx 14 and - 1Bx 15 subunits are strongly positively associated with good bread-making and excellent noodle-making quality. The two subunits are encoded by two genes, Glu-1Bx14 and Glu-1Bx15, which are tightly linked and located on the 1BL. Protein assay by SDS-PAGE indicated that the expression of Glu-1Bx14 gene was always much stronger than that of Glu-1By15 in the same variety. But, variation of expression level for Glu-1By15 gene existed among varieties, such as in Xiaoyan 54, Xiaoyan 6, Yanzhan 1 and Shanyou 225. We also investigated the transcription difference of Glu-1By14 and Glu-1By15 genes in Xiaoyan 54 and Shanyou 225 by semi-quantitative RT-PCR method. The Glu-1By14 always transcripts much more than the Glu-1By15. This was basically consistent with the translation difference between the two genes. Promoters of 1Bx14, 1By15, 1By8, 1Dx2 and 1Dy12 were cloned from Xiaoyan 54, Chinese Spring and Aegilops tauschii. Sequence analysis indicated that the HMW-GS genes had high homology at their promoter regions. However, significant difference existed between sequence of 1Bx14 promoter and those of other HMW-GS genes. The transient expression experiment showed that the promoter of 1By15 has lower activity than that of 1Bx14, which was consistent with their transcription level of the two genes in varieties. In addition, transient expression of the gus driven by the promoter （P2） of HMW-GS 1Dx2 gene was higher than by other HMW-GS promoters. Therefore, we constructed 1By15 gene expression vector driven by the 1Dx2 promoter, and transformed the 1By15 gene into wheat commercial variety, Jimai 20 by pollen tube method. Of 45 independent transgenic lines identified by PCR, 3 were confirmed to contain the HMW-GS 1By15 gene via Southern hybridization. The delivered 1B

关键词： HMW-GS 1By15 gene transient expression assay transgenic

Impact of H_(2)S on Hg^(0)capture performance over nitrogen-doped carbon microsphere sorbent:experimental and theoretical insights

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Frontiers of Chemical Science and Engineering 2024年第3期18卷 89-100页

作者： Guopei zhang Xiaoyang zhang Xiangwen Xing Xiangru Kong Lin Cui dong yong National Engineering Laboratory for Reducing Emissions from Coal Combustion Shandong UniversityJinan250061China Bingtuan Energy Development Institute Shihezi UniversityShihezi832000China

A nitrogen-doped carbon microsphere sorbent with a hierarchical porous structure was synthesized via aggregation-hydrothermal *** Hg^(0)adsorption performance of the nitrogen-doped carbon microsphere sorbent was tested and compared with that of the coconut shell activated carbon prepared in the *** effect of H_(2)S on Hg^(0)adsorption was also *** nitrogen-doped carbon microsphere sorbent exhibited superior mercury removal performance compared with that of coconut shell activated *** the absence of H_(2)S at a low temperature(≤100℃),the Hg^(0)removal efficiency of the nitrogen-doped carbon microsphere sorbent exceeded 90%.This value is significantly higher than that of coconut shell activated carbon,which is approximately 45%.H_(2)S significantly enhanced the Hg^(0)removal performance of the nitrogen-doped carbon microsphere sorbent at higher temperatures(100–180℃).The hierarchical porous structure facilitated the diffusion and adsorption of H_(2)S and Hg^(0),while the nitrogen-containing active sites significantly improved the adsorption and dissociation capabilities of H_(2)S,contributing to the generation of more active sulfur species on the surface of the nitrogen-doped carbon microsphere *** formation of active sulfur species and HgS on the sorbent surface was further confirmed using X-ray photoelectron spectroscopy and Hg^(0)temperature-programmed desorption *** functional theory was employed to elucidate the adsorption and transformation of Hg^(0)on the sorbent surface.H_(2)S adsorbed and dissociated on the sorbent surface,generating active sulfur species that reacted with gaseous Hg^(0)to form HgS.

关键词： nitrogen-doped carbon microsphere H_(2)S Hg^(0)removal adsorption mechanism

阿奇霉素胶囊在中国健康受试者中的生物等效性研究

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中国临床药理学杂志 2024年第1期40卷 97-101页

作者：谢朋飞陈元璐陈菡周燕杨鹏年立忠左莉英张永东郴州市第一人民医院Ⅰ期临床研究室湖南郴州423000 南华大学医院管理研究所湖南郴州423000 安徽省药品审评查验中心安徽合肥230000 安徽万邦医药科技股份有限公司安徽合肥230000 蚌埠丰原涂山制药有限公司安徽蚌埠233050

目的评价阿奇霉素胶囊受试制剂与参比制剂在中国健康受试者中的生物等效性。方法本研究采用随机、开放、两周期交叉试验设计,共入组48例受试者。受试者单次空腹口服阿奇霉素胶囊受试制剂或参比制剂250 mg。以液相色谱-串联质谱联用法测... 详细信息

目的评价阿奇霉素胶囊受试制剂与参比制剂在中国健康受试者中的生物等效性。方法本研究采用随机、开放、两周期交叉试验设计,共入组48例受试者。受试者单次空腹口服阿奇霉素胶囊受试制剂或参比制剂250 mg。以液相色谱-串联质谱联用法测定人血浆样品中阿奇霉素的血药浓度,用WinNon⁃Lin8.1计算和分析阿奇霉素主要药代动力学参数,并进行生物等效性评价。结果空腹条件下单剂量口服阿奇霉素胶囊受试制剂与参比制剂的主要药代动力学参数:C_(max)分别为(319.89±127.35)和(330.41±122.11)ng·mL^(-1);AUC0-192 h分别为(2423.04±587.15)和(2489.97±685.73)ng·h·mL^(-1);AUC0-∞分别为(2753.40±644.96)和(2851.71±784.05)ng·h·mL^(-1);tmax分别为(2.60±1.11)和(2.62±1.13)h;t1/2分别为(76.76±15.14)和(79.83±17.14)h。空腹条件下,受试制剂与参比制剂C_(max)、AUC0-192 h、AUC0-∞几何均值的90%置信区间分别为87.52%~107.18%、91.46%~105.80%和91.17%~105.06%。结论空腹条件下阿奇霉素胶囊受试制剂与参比制剂具有生物等效性。

关键词：阿奇霉素胶囊药代动力学生物等效性安全性

Regional Climate Damage Quantification and Its Impacts on Future Emission Pathways Using the RICE Model

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Advances in Atmospheric Sciences 2024年第9期41卷 1843-1852页

作者： Shili YANG Wenjie dong Jieming CHOU yong zhang Weixing ZHAO Beijing Meteorological Observation Centre Beijing Meteorological BureauBeijing 100089China School of Atmospheric Sciences Sun Yat-sen UniversityZhuhai 519082China Southern Marine Science and Engineering Guangdong Laboratory Zhuhai 519082China Beijing Normal University Beijing 100101China CMA Institute for Development and Programme Design Beijing 100081China

This study quantified the regional damages resulting from temperature and sea level changes using the Regional Integrated of Climate and Economy(RICE)model,as well as the effects of enabling and disabling the climate impact module on future emission *** highlight varied damages depending on regional economic development and ***,China and Africa could suffer the most serious comprehensive damages caused by temperature change and sea level rise,followed by India,other developing Asian countries(OthAsia),and other high-income countries(OHI).The comprehensive damage fractions for China and Africa are projected to be 15.1%and 12.5%of gross domestic product(GDP)in 2195,with corresponding cumulative damages of 124.0 trillion and 87.3 trillion United States dollars(USD)from 2005 to 2195,***,the comprehensive damage fractions in Japan,Eurasia,and Russia are smaller and projected to be lower than 5.6%of GDP in 2195,with cumulative damages of 6.8 trillion,4.2 trillion,and 3.3 trillion USD,***,coastal regions like Africa,the European Union(EU),and OHI show comparable damages for sea level rise and temperature *** China,however,sea level-induced damages are projected to exceed those from temperature ***,this study indicates that switching the damage modules on or off affects the regional and global emission trajectories,but the magnitude is relatively *** 2195,global emissions under the experiments with all of the damage modules switched off,only the sea level damage module switched on,and only the temperature damage module switched on,were 3.5%,2.3%and 1.2%higher than those with all of the damage modules switched on,respectively.

关键词： climate damage integrated assessment model carbon emissions sea level rise temperature change

Mold breakout prediction based on computer vision and machine learning

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Journal of Iron and Steel Research International 2024年第8期31卷 1947-1959页

作者： Yan-yu Wang Qi-can Wang yong-chang zhang yong-hui Cheng Man Yao Xu-dong Wang School of Materials Science and Engineering Dalian University of TechnologyDalian 116024LiaoningChina Key Laboratory of Solidification Control and Digital Preparation Technology Dalian University of TechnologyDalian 116024LiaoningChina

Breakout is the most serious production accident in continuous casting and must be detected and predicted by stable and reliable *** sticking region,which forms on the local copper plate and expanded into a"V"shape,is the typical precursor of ***,computer vision technology was exploited to visualize the temperature change rate of the copper plate based on the temperature signals from thermocouples;then,the static and dynamic features of the abnormal sticking region were ***,logistic regression and Adaboost models were used to study and identify these features,resulting in the development of a mold breakout prediction model based on computer vision and machine *** test results demonstrate that the proposed model can effectively distinguish anomalous temperature patterns and considerably reduce false alarms without any missing *** a result,the proposed method could offer valuable insights into the realm of abnormality detection and prediction during continuous casting process.

关键词： Abnormality detection Image processing Adaboost Logistic regression Continuous casting

A continuous and long-term in-situ stress measuring method based on fiber optic. Part I: Theory of inverse differential strain analysis

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Petroleum Science 2024年第2期21卷 1171-1189页

作者： Kun-Peng zhang Mian Chen Chang-Jun Zhao Su Wang yong-dong Fan State Key Laboratory of Petroleum Resources and Prospecting China University of PetroleumBeijing102249China MOE Key Laboratory of Petroleum Engineering in China University of Petroleum Beijing102249China Beijing International Center for Gas Hydrate School of Earth and Space SciencesPeking UniversityBeijing100871China

A method for in-situ stress measurement via fiber optics was proposed. The method utilizes the relationship between rock mass elastic parameters and in-situ stress. The approach offers the advantage of long-term stress measurements with high spatial resolution and frequency, significantly enhancing the ability to measure in-situ stress. The sensing casing, spirally wrapped with fiber optic, is cemented into the formation to establish a formation sensing nerve. Injecting fluid into the casing generates strain disturbance, establishing the relationship between rock mass properties and treatment ***, an optimization algorithm is established to invert the elastic parameters of formation via fiber optic strains. In the first part of this paper series, we established the theoretical basis for the inverse differential strain analysis method for in-situ stress measurement, which was subsequently verified using an analytical model. This paper is the fundamental basis for the inverse differential strain analysis method.

关键词： In-situ stress Fiber optic Orthotropic elastic Differential evolution ABAQUS

A Tunable Ultrafast Source by Sum-Frequency Generation between Two Actively Synchronized Ultrafast Lasers

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Chinese Physics Letters 2012年第6期29卷 152-154页

作者： XUAN Hong-Wen WANG Nan zhang yong-dong WANG Zhao-Hua WEI Zhi-Yi Beijing National Laboratory for Condensed Matters and Institute of Physics Chinese Academy of SciencesBeijing 100190

We demonstrate an experimental setup of a tunable ultrafast laser source ty sum-frequency generation (SFG)between a mode-locking Ti:sapphire laser and a Nd:YVO4 *** generated wavelength by SFG is tunable from 450nm to 480nm with timing jitter no more than 1 *** average output power is over 20mW and the maximum is about 30mW at *** ultrafast laser is a simple and easy tuning source applied to some pump-probe spectroscopy and ultrafast dynamics experiments.

关键词： tunable tuning pump

A semi-analytical model for coupled flow in stress-sensitive multi-scale shale reservoirs with fractal characteristics

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Petroleum Science 2024年第1期21卷 327-342页

作者： Qian zhang Wen-dong Wang Yu-Liang Su Wei Chen Zheng-dong Lei Lei Li yong-Mao Hao Key Laboratory of Unconventional Oil&Gas Development(China University of Petroleum(East China)) Ministry of EducationQingdao266580ShandongChina School of Petroleum Engineering China University of Petroleum(East China)Qingdao266580ShandongChina Shale Oil Development Branch Changqing Oilfield CompanyPetroChinaQingyang745708GansuChina PetroChina Research Institute of Petroleum Exploration&Development Beijing100083China

A large number of nanopores and complex fracture structures in shale reservoirs results in multi-scale flow of oil. With the development of shale oil reservoirs, the permeability of multi-scale media undergoes changes due to stress sensitivity, which plays a crucial role in controlling pressure propagation and oil flow. This paper proposes a multi-scale coupled flow mathematical model of matrix nanopores, induced fractures, and hydraulic fractures. In this model, the micro-scale effects of shale oil flow in fractal nanopores, fractal induced fracture network, and stress sensitivity of multi-scale media are considered. We solved the model iteratively using Pedrosa transform, semi-analytic Segmented Bessel function, Laplace transform. The results of this model exhibit good agreement with the numerical solution and field production data, confirming the high accuracy of the model. As well, the influence of stress sensitivity on permeability, pressure and production is analyzed. It is shown that the permeability and production decrease significantly when induced fractures are weakly supported. Closed induced fractures can inhibit interporosity flow in the stimulated reservoir volume (SRV). It has been shown in sensitivity analysis that hydraulic fractures are beneficial to early production, and induced fractures in SRV are beneficial to middle production. The model can characterize multi-scale flow characteristics of shale oil, providing theoretical guidance for rapid productivity evaluation.

关键词： Multi-scale coupled flow Stress sensitivity Shale oil Micro-scale effect Fractal theory