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Cleaner production of ammonium paratungstate by membrane electrolysis-precipitation of sodium tungstate solution

Tungsten 2023年第1期5卷 145-159页

作者： Afolabi Uthmon Olayiwola Hao Du Shao-Na Wang Biao Liu ye-qing lv Bo Pan University of Chinese Academy of Sciences Beijing 100049China CAS Key Laboratory of Green Process and Engineering National Engineering Research Center of Green Recycling for Strategic Metal ResourcesInstitute of Process EngineeringChinese Academy of SciencesBeijing 100190China

The production of ammonium paratungstate(APT) is riddled with the generation of wastewater,which causes environmental *** solve the problem of wastewater generation at source,a membrane electrolysis-NH3·H2O precipitation method,which prevents wastewater generation and recycles the reagents used in the process,was proposed and investigated in this *** electrolysis process was investigated based on parameters such as initial cathodic and anodic NaOH concentrations,and current *** results showed that an increase in current density and initial cathodic NaOH concentration and a decrease in the initial anodic NaOH concentration would enhance the separation of tungsten and *** optimum condition was found at a current density of 666 A·m^(-2),initial anodic and cathodic NaOH concentrations of 69 g·L^(-1) and 40 g·L^(-1),with a current efficiency of 75.40%,and energy consumption for producing 1 ton of NaOH was 2184 kW·*** precipitation process was investigated based on the acidic high W/Na molar ratio solution obtained by the electrolysis process with NH3·H2O as the *** such as excessive coefficient,temperature,and W/Na molar ratio were *** result showed that the variation of excessive coefficient and solution temperature had an opposite effect on the purity of the APT,while an increase in the W/Na molar ratio would increase the product *** precipitation product obtained had a purity of 99.6% and was characterized using X-ray diffraction,inductively coupled plasma,and scanning electron *** methods proposed in this study could provide fundamental information for the design of a cleaner APT production process.

关键词： Membrane electrolysis Ammonium paratungstate Separation of sodium and tungsten ions Ion states of tungsten Cleaner production

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The complex roles of m^(6)A modifications in neural stem cell proliferation, differentiation, and self-renewal and implications for memory and neurodegenerative diseases

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Neural Regeneration Research 2025年第6期20卷 1582-1598页

作者： Yanxi Li Jing Xue Yuejia Ma Ke ye Xue Zhao Fangliang Ge Feifei Zheng Lulu Liu Xu Gao Dayong Wang qing Xia Department of Biochemistry and Molecular Biology College of Basic Medical SciencesHarbin Medical UniversityHarbinHeilongjiang ProvinceChina College of Basic Medical Sciences Harbin Medical UniversityHarbinHeilongjiang ProvinceChina Basic Medical Institute Heilongjiang Academy of Medical SciencesHarbinHeilongjiang ProvinceChina Key Laboratory of Heilongjiang Province for Genetically Modified Animals Harbin Medical UniversityHarbinHeilongjiang ProvinceChina Translational Medicine Research and Cooperation Center of Northern China Heilongjiang Academy of Medical SciencesHarbinHeilongjiang ProvinceChina Dongzhimen Hospital Beijing University of Chinese MedicineBeijingChina

N6-methyladenosine(m^(6)A), the most prevalent and conserved RNA modification in eukaryotic cells, profoundly influences virtually all aspects of mRNA metabolism. mRNA plays crucial roles in neural stem cell genesis and neural regeneration, where it is highly concentrated and actively involved in these processes. Changes in m^(6)A modification levels and the expression levels of related enzymatic proteins can lead to neurological dysfunction and contribute to the development of neurological diseases. Furthermore, the proliferation and differentiation of neural stem cells, as well as nerve regeneration, are intimately linked to memory function and neurodegenerative diseases. This paper presents a comprehensive review of the roles of m^(6)A in neural stem cell proliferation, differentiation, and self-renewal, as well as its implications in memory and neurodegenerative diseases. m^(6)A has demonstrated divergent effects on the proliferation and differentiation of neural stem cells. These observed contradictions may arise from the time-specific nature of m^(6)A and its differential impact on neural stem cells across various stages of development. Similarly, the diverse effects of m^(6)A on distinct types of memory could be attributed to the involvement of specific brain regions in memory formation and recall. Inconsistencies in m^(6)A levels across different models of neurodegenerative disease, particularly Alzheimer's disease and Parkinson's disease, suggest that these disparities are linked to variations in the affected brain regions. Notably, the opposing changes in m^(6)A levels observed in Parkinson's disease models exposed to manganese compared to normal Parkinson's disease models further underscore the complexity of m^(6)A's role in neurodegenerative processes. The roles of m^(6)A in neural stem cell proliferation, differentiation, and self-renewal, and its implications in memory and neurodegenerative diseases, appear contradictory. These inconsistencies may be a

关键词： Alzheimer's disease cell self-renewal central nervous system memory microglia nerve regeneration neurodegenerative diseases neurogenesis RNA methylation

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基于自由曲面的裸眼3D显示柱透镜光栅设计

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光子学报 2017年第12期46卷 92-101页

作者：张晓婷陈芳萍叶绿青王孝艳蔡智辉庄其仁华侨大学信息科学与工程学院福建厦门361021 华侨大学外国语学院福建泉州362021

设计了一种用于裸眼3D显示屏的低串扰新型双面柱透镜光栅板,光栅板的入射面为等间距排列的与显示器子像素数量相同的凹形自由曲面光栅结构,出射面为斜置的凸形自由曲面光栅结构.根据裸眼3D显示原理和几何光学原理推导了双面光栅板的光... 详细信息

设计了一种用于裸眼3D显示屏的低串扰新型双面柱透镜光栅板,光栅板的入射面为等间距排列的与显示器子像素数量相同的凹形自由曲面光栅结构,出射面为斜置的凸形自由曲面光栅结构.根据裸眼3D显示原理和几何光学原理推导了双面光栅板的光栅单元自由曲面设计公式和光栅参数计算公式.通过MATLAB编程计算和SolidWorks软件建模得到光栅板模型.用TracePro软件对所设计的光栅板模型进行光线追迹仿真,结果表明:参数优化后的6视点斜置柱透镜双面光栅3D显示在最佳视角的图像串扰度为0.068%,与传统6视点斜置柱透镜光栅的最佳视角图像串扰度相比降低了2个数量级,并且在观看距离2 000mm^3 000mm范围内图像串扰度基本不变.

关键词：裸眼3D显示柱透镜光栅光学仿真串扰自由曲面多视点

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食品中钠离子含量检测方法综述

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食品安全质量检测学报 2016年第11期7卷 4576-4580页

作者：叶青李勤吕庆李柚龚雁上海市质量监督检验技术研究院上海200233 瑞士万通中国有限公司北京100101

钠是食品中重要的矿物质,可维持机体正常的渗透压和新陈代谢,可以维持体内酸碱的平衡,对人体有着非常重要的作用。但是如果钠摄入过多,又是高血压等慢性病的危险因素。钠离子还是中华人民共和国卫生部在2011年发布的GB 28050-2011《食... 详细信息

钠是食品中重要的矿物质,可维持机体正常的渗透压和新陈代谢,可以维持体内酸碱的平衡,对人体有着非常重要的作用。但是如果钠摄入过多,又是高血压等慢性病的危险因素。钠离子还是中华人民共和国卫生部在2011年发布的GB 28050-2011《食品安全国家标准预包装食品营养标签通则》中规定的4种核心营养素之一,因此食品中钠的含量受到人们的广泛关注。食品中钠离子含量的测定对于保证人体健康有重要意义,也是目前国内研究的热点问题,目前有多种方法实现了对钠离子的准确定量检测,包括色谱法、原子吸收光谱法、滴定法等,各有优缺点。本文针对各种检验技术进行了详细的对比,对近年来食品中钠离子检测方法的研究进行了综述。

关键词：钠离子温度滴定法原子吸收光谱法色谱法电感耦合等离子体质谱法

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Six-fold swelling expansion microscopy assisted cell painting for high-content phenotypic screening

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Optoelectronics Letters 2025年

作者： Junfang XIE Yipeng DONG Jin WANG Zhichao DENG Jianguo TIAN qing ye Key Laboratory of Weak-Light Nonlinear Photonics， Ministry of Education， School of Physics and TEDA Applied Physics， Nankai University

Imaging-based phenotypic screening uses cellular phenotypes to describe the drug performance， which generally focuses on single cellular feature， lacking of a comprehensive characterization. Here， we propose a high content phenotypic screening method based on expansion microscopy (ExM) assisted Cell Painting， which enables multi-channel imaging with approximately 50 nm resolution. As a demonstration， we applied this method to a phenotypic screening involving five drugs. The morphological attributes of three subcellular structures were summarized to consist a “fingerprint” describing the drug effect. The proposed method can provide comprehensive and detailed clues for drug evaluation， enriching the content of phenotypic screening.

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醋酸林格液在失血性休克患者中的应用

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中国当代医药 2021年第5期28卷 53-57页

作者：钱进丁志文叶绿青李锋华广东省东莞市黄江医院急诊科广东东莞523750

目的探讨平衡复苏液醋酸林格液对失血性休克患者的治疗临床指标的影响,为平衡复苏液治疗失血性休克的有效性与安全性提供参考依据。方法选取2019年4月~2019年12月东莞市黄江医院收治的124例行急诊手术的创伤失血性休克患者作为研究对象... 详细信息

目的探讨平衡复苏液醋酸林格液对失血性休克患者的治疗临床指标的影响,为平衡复苏液治疗失血性休克的有效性与安全性提供参考依据。方法选取2019年4月~2019年12月东莞市黄江医院收治的124例行急诊手术的创伤失血性休克患者作为研究对象。按照随机数字表法分为观察组和对照组,每组各62例。观察组患者给予醋酸林格液,对照组给予生理盐水。先进行院前急救处理、手术治疗后,分别用醋酸林格液和生理盐水进行液体复苏以纠正休克,手术前后采血检测D-二聚体、血降钙素原、凝血酶时间(TT)、活化部分凝血活酶时间(APTT)、凝血酶原时间(PT)、电解质中各离子浓度、动脉血酸碱平衡情况,并且记录两组手术临床指标。结果观察组手术2 h后的D-二聚体、血降钙素原、血乳酸(LAC)低于对照组,差异有统计学意义(P0.05)。结论平衡复苏液醋酸林格液用于失血性休克患者可降低D-二聚体、血降钙素原的表达,降低血乳酸改善微循环,值得临床推广使用。

关键词：醋酸林格液失血性休克 D-二聚体血降钙素原凝血功能电解质酸碱平衡

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急诊PCI绿色通道对急性ST段抬高型心肌梗死患者抢救效果的影响

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中国当代医药 2019年第4期26卷 66-69页

作者：钱进龚煜丁志文李峰华叶绿青广东省东莞市黄江医院急诊科广东东莞523750 广东省东莞市黄江医院内二科广东东莞523750

目的探讨急诊经皮冠状动脉介入治疗(PCI)绿色通道对急性ST段抬高型心肌梗死(STEMI)患者抢救效果的影响。方法选取我院急诊科于2016年10月～2018年6月通过绿色通道进行PCI的126例STEMI患者作为观察组,2014年10月～2016年9月未建立绿色通... 详细信息

目的探讨急诊经皮冠状动脉介入治疗(PCI)绿色通道对急性ST段抬高型心肌梗死(STEMI)患者抢救效果的影响。方法选取我院急诊科于2016年10月～2018年6月通过绿色通道进行PCI的126例STEMI患者作为观察组,2014年10月～2016年9月未建立绿色通道前进行PCI的107例STEMI患者作为对照组。比较两组患者的抢救时间、门球(D-to-B)时间、D-to-B时间达标率、住院时间及死亡率。结果观察组患者的分诊评估时间、静脉釆血时间及静脉给药时间均短于对照组,差异有统计学意义(P<0.05);观察组患者的心电图监护时间及抢救总时间均显著短于对照组,差异有统计学意义(P<0.01)。观察组患者的D-to-B时间短于对照组,差异有统计学意义(P<0.01);观察组患者的D-to-B时间达标率显著高于对照组,差异有统计学意义(P<0.01)。观察组患者的住院时间短于对照组,差异有统计学意义(P<0.05);观察组患者的死亡率显著低于对照组,差异有统计学意义(P<0.01)。结论建立急诊PCI绿色通道可明显缩短STEMI患者的抢救时间,降低死亡率,全面提高抢救质量,具有较好的临床推广价值。

关键词： PCI绿色通道 ST段抬高型心肌梗死抢救效果

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Veno-venous-extracorporeal membrane oxygenation treatment for severe capillary leakage syndrome: A case report

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World Journal of Clinical Cases 2021年第33期9卷 10273-10278页

作者： Wei-Xin Nong qing-Jie lv ye-Sheng Lu Department of EICU Guangxi Guigang People’s HospitalGuigang 537100Guangxi Zhuang Autonomous RegionChina

BACKGROUND Capillary leak syndrome(CLS)is characterized by the leakage of large amounts of fluid and plasma proteins into the interstitial space,resulting in hypoalbuminemia,hypovolemic shock,elevated blood concentration,systemic progressive edema,and multiple serosal cavity *** syndromes such as cavity effusion pose a grave threat to the life and health of the *** SUMMARY A 58-year-old female patient was admitted to the hospital after being in a coma for 6 h following accidental ingestion of a *** was treated with phencyclidine hydrochloride and pralidoxime iodide for detoxification,mechanical ventilation to maintain oxygen supply,continuous renal replacement therapy to maintain the internal environment,and hemoperfusion to promote the excretion of *** also received a transfusion of red blood cells and massive fluid ***,her blood pressure was not *** patient was diagnosed with CLS due to pesticide *** was difficult to maintain under full ventilator support;therefore,veno-venous-extracorporeal membrane oxygenation(VV-ECMO)treatment was given 13 h after *** oxygenation level improved,but a large amount of ascites and pleural effusion soon became *** continued drainage with an indwelling drainage tube,and the ECMO flow *** leakage gradually decreased,and ECMO was discontinued 3 d *** the 6th day,the patient recovered from unconsciousness,but on gastroscopic evaluation,severe erosions were found in her entire *** the family’s consent,treatment was stopped,and the patient was discharged from the hospital on the 7th *** ECMO,liquid resuscitation and management,and improvement in plasma colloidal osmotic pressure,circulation,and tissue oxygen supply are crucial in treating CLS.

关键词： Capillary leakage syndrome Pesticide poisoning Liquid resuscitation Hypoxia index Extracorporeal membrane oxidation Case report

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Frontiers of Information Technology & Electronic Engineering 2017年第6期18卷 796-807页

作者： Zhen-hua YUAN Chen CHEN Xiang CHENG Guo-cheng lv Liu-qing YANG ye JIN State Key Laboratory of Advanced Optical Communication Systems and Networks Peking University Department of Electrical & Computer Engineering Colorado State University

This article is focused on secure relay beamformer design with a correlated channel model in the relay-eavesdropper network. In this network, a single-antenna source-destination pair transmits secure information with the help of an amplify-and-forward (AF) relay equipped with multiple antennas, and the legitimate and eavesdropping channels are correlated. The relay cannot obtain the instantaneous channel state information (CSI) of the eavesdropper, and has only the knowledge of correlation information between the legitimate and eavesdropping channels. Depending on this information, we derive the conditional distribution of the eavesdropping channel. Two beamformers at the relay are studied for the approximate ergodic secrecy rate:(1) the generalized match-andforward (GMF) beamformer to maximize the legitimate channel rate, and (2) the general-rank beamformer (GRBF).In addition, one lower-bound-maximizing (LBM) beamformer at the relay is discussed for maximizing the lower bound of the ergodic secrecy rate. We find that the GMF beamformer is the optimal rank-one beamformer, that the GRBF is the iteratively optimal beamformer, and that the performance of the LBM beamformer for the ergodic secrecy rate gets close to that of the GRBF for the approximate secrecy rate. It can also be observed that when the relay has lower power or the channel gain of the second hop is low, the performance of the GMF beamformer surpasses that of the GRBF. Numerical results are presented to illustrate the beamformers' performance.

关键词： Physical layer security Relay beamforming Correlated channels Ergodic secrecy rate

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区域互联网深化、信息摩擦与进口增长——基于进口二元边际视角

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山西财经大学学报 2025年第1期47卷 72-85页

作者：庄金凤马野青王冠宇南京大学商学院

信息技术发展是驱动城市数字经济发展和高水平对外开放的基础。基于此，创新性地提出考虑信息摩擦作用的垄断竞争分析框架，并从进口二元边际视角实证检验区域互联网深化对进口增长的作用。研究发现，区域互联网深化能显著促进进口规模... 详细信息

信息技术发展是驱动城市数字经济发展和高水平对外开放的基础。基于此，创新性地提出考虑信息摩擦作用的垄断竞争分析框架，并从进口二元边际视角实证检验区域互联网深化对进口增长的作用。研究发现，区域互联网深化能显著促进进口规模扩张，增长来源于进口价格、进口数量与进口种类，主要影响机制为降低信息摩擦。异质性分析表明，低对外贸易开放城市互联网深化显著降低了进口产品数量。进一步讨论发现，区域互联网深化对进口“数量”增长及“质量”增长均有促进作用。

关键词：互联网深化进口广延边际进口集约边际信息摩擦进口产品质量可变加价垄断竞争市场进口贸易

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