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Selection of Stainless Steel for Cathode Plate in Hydrometallurgical Process

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World Journal of Engineering and Technology 2015年第3期3卷 348-353页

作者： Chi Zhang junyi wu 1Peking Brotech Company Beijing China 2Sanmen Sanyou Technology Inc. Taizhou China

Recently, the hydrometallurgy for metal refining is getting more and more popularin China. During a traditional hydrometallurgical process sulphuric acid is often used. In many cases, the working conditions in the solvent extraction and electro winning processes could be very tough for the commonly used material of different equipment and components, such as, austenitic stainless steels of 304/304L and 316L. In a copper refinery, a permanent cathode plate made of 316L was taken out of production due to heavy corrosion. The samples from the corroded plate were investigated thoroughly, possible reasons were pointed out and new material was suggested in this work. It is expected this research could help the copper refineries and Sanmen Sanyou to select the proper cathode plates in complicated working conditions.

关键词： Mining Pitting Corrosion Cathode Plate Hydrometallurgy Copper Refining

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一种无线电信号的模拟调制参数测量系统设计

国外电子测量技术 2024年第5期43卷 116-126页

作者：刘星雨姜乃卓徐宇航张子达吴俊毅南京大学电子科学与工程学院南京210023

无线电信号的模拟调制参数测量在无线电检测定位、通信发射机测试校准,民用船舶的导航通信等领域都有广泛应用。设计实现了一种基于超外差结构的无线电信号模拟调制参数的测量系统,以STM32F4系列单片机作为控制核心,包括的主要硬件电路... 详细信息

无线电信号的模拟调制参数测量在无线电检测定位、通信发射机测试校准,民用船舶的导航通信等领域都有广泛应用。设计实现了一种基于超外差结构的无线电信号模拟调制参数的测量系统,以STM32F4系列单片机作为控制核心,包括的主要硬件电路模块有本振信号源、混频器、LC无源滤波器、锁相环、低噪声放大器、包络检波电路、鉴频电路等。系统可自动识别普通调幅波、调频波、未调制的单频载波等模拟调制类型,完成无线电信号解调输出的同时自动测量出载波频率、调制信号频率、调幅指数、调频指数等主要调制参数。实测结果表明,系统对调制类型识别正确,调幅或调频信号的解调波形信噪比高、无明显失真,载波频率测量的相对误差小于10-5,主要调制参数测量的相对误差均小于5%。

关键词：无线电信号载波频率调制类型识别调制参数测量

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甲基丙烯腈生产技术及其下游应用

上海化工 2024年第4期49卷 57-61页

作者：王昊熊德胜郭耘庄岩吴君毅蒋兆飞上海华谊集团股份有限公司上海200040 上海华谊新材料有限公司上海201108 华东理工大学化学与分子工程学院上海200237

甲基丙烯腈是一种重要的精细化工产品,主要作为中间体用于生产聚甲基丙烯酰亚胺和甲基丙烯酸甲酯等产品。简要介绍了甲基丙烯腈的主要生产技术,包括丙酮氰醇法、混合C4直接氨氧化法、异丁烯氨氧化法,以及其他新型工艺路线,并对甲基丙烯... 详细信息

甲基丙烯腈是一种重要的精细化工产品,主要作为中间体用于生产聚甲基丙烯酰亚胺和甲基丙烯酸甲酯等产品。简要介绍了甲基丙烯腈的主要生产技术,包括丙酮氰醇法、混合C4直接氨氧化法、异丁烯氨氧化法,以及其他新型工艺路线,并对甲基丙烯腈主要下游应用进行了概述。

关键词：甲基丙烯腈生产技术下游应用

F-NLR评分评估自发性基底节脑出血患者短期预后的临床研究

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徐州医科大学学报 2024年第3期44卷 175-180页

作者：肖耀东张啸虎吴俊逸夏浩谢满意范月超梁君徐州医科大学研究生院江苏徐州221004 徐州医科大学附属医院神经外科江苏徐州221002

目的探讨外周血纤维蛋白原和中性粒细胞/淋巴细胞比值联合评分(F-NLR)对自发性基底节区脑出血短期预后的预测作用。方法回顾性分析2021年1月-2022年12月自发性基底节区脑出血患者154例,通过改良Rankin量表(mRS)评分系统进行评估,将患... 详细信息

目的探讨外周血纤维蛋白原和中性粒细胞/淋巴细胞比值联合评分(F-NLR)对自发性基底节区脑出血短期预后的预测作用。方法回顾性分析2021年1月-2022年12月自发性基底节区脑出血患者154例,通过改良Rankin量表(mRS)评分系统进行评估,将患者分成预后良好组(n=50)和预后不良组(n=104)。应用单因素和多因素回归分析基底节区脑出血的风险因素,并利用ROC曲线评估F-NLR在基底节区脑出血预后中的应用价值。结果 2组患者的年龄、血肿体积、是否破入脑室、格拉斯哥昏迷评分(GCS评分)、白细胞(WBC)计数、中性粒细胞(ANC)计数、淋巴细胞(ALC)计数、中性粒细胞/淋巴细胞比值(NLR)、纤维蛋白原(FIB)、F-NLR水平差异有统计学意义(P<0.05)。多元logistic回归分析显示基底节区脑出血患者的血肿体积、GCS评分、高WBC、低ALC、高F-NLR评分是其短期预后不良的重要独立危险因素(P<0.05)。ROC曲线表明F-NLR评分预测基底节区脑出血预后不良的AUC值为0.799(95%CI:0.723~0.874),敏感度为66.3%,特异度为86.0%。结论 F-NLR评分对基底节区脑出血患者的近期预后具有重要指导意义,可作为进一步临床应用的依据。

关键词：纤维蛋白原中性粒细胞/淋巴细胞比值基底节脑出血预后危险因素

高炉喷吹固体燃料物化结构与燃烧性能关系研究

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鞍钢技术 2024年第5期 1-6页

作者：王广伟张雪婷刘江斌吴君毅任政宁晓钧北京科技大学冶金与生态工程学院北京100083

高炉喷吹煤粉技术是现代钢铁企业降本增效的主要技术措施,喷吹固体燃料的燃烧性能是提升煤焦置换比的关键。为明确影响高炉喷吹固体燃料燃烧性能的关键因素,系统分析了不同固体燃料的物化结构与其燃烧性能的关系。结果表明,高炉喷吹固... 详细信息

高炉喷吹煤粉技术是现代钢铁企业降本增效的主要技术措施,喷吹固体燃料的燃烧性能是提升煤焦置换比的关键。为明确影响高炉喷吹固体燃料燃烧性能的关键因素,系统分析了不同固体燃料的物化结构与其燃烧性能的关系。结果表明,高炉喷吹固体燃料中碳结构的有序化程度对其燃烧性能有显著的影响,有序化程度越高的样品,在燃烧反应过程中需要更高的能量破坏芳香环的结构,造成其着火温度升高,燃烧速率降低。高炉喷吹煤粉技术在喷吹燃料选择和使用过程中,选取固定碳含量高、发热值高、孔隙结构发达、富含有机官能团和碳结构有序化程度较低的固体燃料进行高炉喷吹,可以有效改善混合煤粉在风口前的燃烧状态,提升高炉喷吹煤粉在炉内的利用率。

关键词：高炉炼铁喷吹煤粉燃烧特性物化结构

A single center experience： post-transplantation adjuvant chemotherapy impacts the prognosis of hepatocellular carcinoma patients

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Chinese Medical Journal 2014年第3期127卷 430-434页

作者： wu junyi Sun Hongcheng Han Zhongbo Peng Zhihai Department of General Surgery Shanghai First Peoples Hospital Shanghai Jiaotong University Shanghai 200080 China

Background The aim of this research was to investigate the impact of post-transplantation adjuvant chemotherapy in the prevention of tumor recurrence and metastasis for hepatocellular carcinoma （HCC） exceeding Milan criteria after liver *** A total of 117 patients with HCC exceeding the Milan criteria who had undergone orthotopic liver transplantation （OLT） from August 2002 to February 2009 were enrolled and retrospectively *** patients were divided into four groups according to chemotherapy regimens and the impact of different chemotherapy regimens on survival,disease-free survival,and adverse effects were *** One year survival rates for the gemicitabine,conventional chemotherapy,oxaliplatin plus capecitabine and the best supportive care （BSC） group were 87.5％,84.2％,81.6％,and 67.5％.The 3-year survival rates were 48.1％,25.9％,31.6％,and 33.7％,respectively for the four *** year disease free survival rates for the four groups were 69.8％,47.4％,53.8％,and 45.7％ *** 3-year disease free survival rates were 43.2％,23.7％,23.6％,and 25.1％ for the four *** analysis showed that the gemcitabine regimen and conventional chemotherapy could significantly improve the survival rate and disease free survival rate for HCC patients who had major vascular invasion and/or microvascular invasion after liver transplantation compared with BSC *** For HCC patients beyond Milan criteria,especially who had vascular invasion and/or micorvascular invasion,post-transplantation adjuvant chemotherapy can significantly improve *** is a proper regimen for postoperative adjuvant *** chemotherapy can also benefit patients,but the adverse effects are not satisfactory.

关键词： liver transplantation hepatocellular carcinoma adjuvant chemotherapy prognosis

Study on the Application of Real-Time Drone Monitoring in Ordos Open-Pit Coal Mine

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Open Journal of Applied Sciences 2023年第4期13卷 483-495页

作者： junyi wu Weizheng Wang Xuesong Ni School of Computer North China Institute of Science and Technology Yanjiao China School of Safety Engineering North China Institute of Science and Technology Yanjiao China Security Department North China Institute of Science and Technology Yanjiao China

In the process of intelligent mine construction in open-pit mine, in order to improve the safety monitoring ability of mine transportation system, solve the problems of large human interference and blind Angle detection by existing conventional monitoring methods, this paper establishes an open-pit mine monitoring data set, and proposes a real-time intelligent monitoring model based on UAV. The reasoning component with strong computing power and low power consumption is selected, and the lightweight object detection model is selected for the experiment. A quantitative standard of dynamic energy consumption detection by evaluation algorithm is proposed. Through experimental comparison, it is found that YOLOv4-tiny has the highest comprehensive grade in detection accuracy, speed, energy consumption and other aspects, which is suitable for application in the above model.

关键词： Open-Pit Mine Safety Monitoring UAV Object Detection

Predicting long-term bone mineral density using early biomarkers in antiresorptive postmenopausal osteoporosis treatment:a mechanistic model-based meta-analysis

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Predicting long-term bone mineral density using early biomar...

基于ANSYS的油茶果脱壳装置传动系统设计及仿真

2018年中国药理学会定量药理学专业委员会学术年会

作者： junyi wu Chen Wang Qingshan Zheng Center for Drug of Clinical Research Shanghai University of Traditional Chinese Medicine

Background:Osteoporosis is a chronic skeletal disease that occurs commonly in postmenopausal *** suggest that approximately 50% women age 50 and older suffered fracture due to osteoporosis,and this is responsible for $19 billion cost every ***,many first class antiresorptive agents including superior bisphosphonates and RANKL inhibitor were extensively used to increase bone mineral density(BMD) and further reduce fracture ***,a reported poor compliance rate of 25% in general osteoporosis therapy distances researchers from long-term *** BMD is an essential surrogate endpoint to evaluate osteoporosis treatment,the response of BMD is often slower and less sensitive than that of bone turnover markers(BTMs),e.g.,serum C-telopeptide of type I collagen(sCTX),osteocalcin,N-telopeptide of type 1 collagen(P1 NP),and bone-specific alkaline phosphatase(BSAP).If BMD response can be predicted via early available BTM data,decisions which rely on BMD response can be made earlier and trials can be designed to maximize the chance of achieving a desired BMD response in new treatment ***:The objective of this analysis was to develop a mechanism-involved model to describe the relationship between BTMs(CTX and P1 NP) and BMD based on short-term dataset from antiresorptive studies,and to validate model’s predictive performance by long-term ***:We carried out a comprehensive literature search for randomized placebo controlled trials which reported both BTMs(CTX and P1 NP) and BMD data in postmenopausal antiresorptive *** data within 1 year was extracted for modeling and that beyond 1 year was retained for prediction *** modeling was performed by E model cumulatively based on disease progression and placebo *** order to link biomarkers and BMD rationally,we developed a mechanistic model to imitate the activity of osteoblast and *** ability was tested by Monte Carlo simu

关键词： osteoporosis antiresorptive bone turnover marker bone mineral density prediction

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机电工程技术 2024年第2期53卷 198-201,220页

作者：廖志强吴均毅熊平原王毅廖东庆阮捷颖刘永成广东省特种设备检测研究院梅州检测院广东梅州514072 仲恺农业工程学院机电工程学院广州510225 广东振声科技集团有限公司广东梅州514700

目前油茶果脱壳大部分以人工脱壳为主,虽有部分机械化方法脱壳,但是存在能耗高、效率低、用途单一等缺点。面对我国油茶产业的快速发展,远不能满足生产需求。因此,研制具有分级脱壳清选一体的油茶果脱壳装置。并对此装置的传动系统进行... 详细信息

目前油茶果脱壳大部分以人工脱壳为主,虽有部分机械化方法脱壳,但是存在能耗高、效率低、用途单一等缺点。面对我国油茶产业的快速发展,远不能满足生产需求。因此,研制具有分级脱壳清选一体的油茶果脱壳装置。并对此装置的传动系统进行设计及其脱壳主轴进行有限元静态分析和模态分析。静态分析表明:脱壳主轴总变形为0.012 5 mm;最大等效应力为18.695 MPa;扭转角度为0.057°,结果满足脱壳主轴的设计要求。经模态分析表明:脱壳主轴在固有频率为330.77 Hz时形变最大,且转速为19 188 r/min时存在共振现象,但转速远大于工作转速,故所设计的装置传动系统合理。研究结果可为后续与油茶果相似的坚果类物料提供参考。

关键词：油茶果脱壳有限元分析传动系统

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