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Composite Eu-MOF@CQDs“off&on”ratiometric luminescent probe for highly sensitive chiral detection of l-lysine and 2-methoxybenzaldehyde

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Chinese Chemical Letters 2023年第11期34卷 231-237页

作者： Yupeng Jiang xinhui fang Ziqing Zhang Xiaomeng Guo Jianzhong Huo Qian Wang Yuanyuan Liu Xinrui Wang Bin Ding Tianjin Key Laboratory of Structure and Performance for Functional Molecule College of ChemistryTianjin Normal UniversityTianjin 300387China

The high amount of l-lysine can increase the potential risk of cardiovascular ***,2-methoxy benzaldehyde(2-MB)has high toxicity and can easily pollute the *** this work,carbon quantum dots(CQDs)can be encapsulated into Eu-BTB(H_(3)BTB=1,3,5-tri(4-carboxyphenyl)benzene),forming the multi-emission composite material Eu-BTB@*** has two emissions peaks(617 nm for Eu and 470 nm for CQDs).Eu-BTB@CQDs can be applied as bi-functional ratiometric“off&on”luminescent sensor for l-lysine and 2-MB with high sensitivity and selectivity,the low limit of detection(LOD)for l-lysine is 3.68μmol/L and for 2-MB is 0.54μmol/L,***,Eu-BTB@CQDs can quantitatively discriminate l-lysine in the mixed d-and l-lysine water solutions(five different concentrations ratio of l/d-lysine has been set)makes the chiral detection of l-lysine are more *** the other hand,Eu-BTB@CQDs also can detect 2-MB over 4-methoxybenzaldehyde(4-MB)with high *** the detection of 2-MB and l-lysine in the lake water real samples with the reasonable recovery ***,the detection mechanisms for l-lysine and 2-MB were also investigated and discussed in detail.

关键词： Photo-luminescence Carbon quantum dots Composite material l-Lysine 2-Methoxybenzaldehyde Isomers

Experimental study on dense-phase pneumatic conveying of coal powder at high pressures

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Clean Energy 2017年第1期1卷 50-67页

作者： Qingliang Guan Zhen Liu xinhui fang Bing Liu Baozai Peng Ziyang Feng Ya Suo Wenhua Li National Institute of Clean-and-Low-Carbon Energy Future Science&Technology CityChangping DistrictBeijing 102211China

Clean utilization and conversion of coal resources is significant to China’s energy sustainable ***-flow coal gasification technology is an important method used for clean and efficient conversion of *** characteristics and stability of high-pressure dense-phase pneumatic conveying of pulverized coal is crucial to the safe and stable operation of dry-feed entrained-flow coal ***-phase pneumatic conveying experiments were carried out using a high-volatile bituminous coal in pipes with diameters of 25,15 and 10 mm,respectively,and at back pressures of 1.0-4.0 *** conveying characteristics and effects of operating and structure parameters were *** drop models were established for horizontal and vertical upward *** prediction uncertainty was within±30%for the horizontal conveying and±20%for the vertical upward *** relative standard deviation of solid flow rate was proposed to explain conveying *** effect of operating parameters on conveying stability was systematically *** gas velocity-related criterion was proposed for stable conveying.

关键词： dense-phase pneumatic conveying pulverized coal high pressure pressure drop stability

A novel composite coating mesh film for oil-water separation

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Frontiers of Chemical Science and Engineering 2009年第1期3卷 112-118页

作者： Futao QIN Zhijia YU xinhui fang Xinghua LIU Xiangyu SUN School of Chemical Engineering Dalian University of TechnologyDalian 116012China

Polytetraﬂuoroethylene-polyphenylene sulﬁde composite coating meshﬁlm was successfully prepared by a simple layered transitional spray-plasticizing method on a stainless steel *** shows super-hydrophobic and super-oleophilic *** contact angle of this meshﬁlm is 156.3°for water,and close to 0°for diesel oil and *** contact angle hysteresis of water on the meshﬁlm is 4.3°.The adhesive force between theﬁlm and substrate is grade 0,theﬂexibility is 1 mm and the pencil hardness is *** oil-water separation test was car-ried out for oil-contaminated water in a six-stage super-hydrophobicﬁlm *** oil removal rate can reach about 99%.

关键词： super-hydrophobic super-oleophilic composite coating mesh film separation of oil and water

先进控制技术在超大型水煤浆气化装置中的应用

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洁净煤技术 2021年第S02期27卷 190-196页

作者：方薪晖北京低碳清洁能源研究院北京102211

煤气化过程由于煤质波动、反应系统复杂及仪表测量滞后,难以及时反映气化炉实时运行状况,使得气化炉运行存在操作保守、响应滞后等问题。针对上述问题,将先进控制技术(Advanced Process Control Technology)应用在气化炉上,有助于实现... 详细信息

煤气化过程由于煤质波动、反应系统复杂及仪表测量滞后,难以及时反映气化炉实时运行状况,使得气化炉运行存在操作保守、响应滞后等问题。针对上述问题,将先进控制技术(Advanced Process Control Technology)应用在气化炉上,有助于实现气化过程的卡边操作,提高装置的运行平稳率并优化空间。国家能源投资集团榆林化工公司3000 t/d水煤浆气化炉已开车成功,完备的测量仪表和可靠的DCS系统使其具有作为先进控制技术实施的基础。以榆林化工公司的超大型水煤浆气化炉作为智能工厂开发实践的切入点,从提高煤气化装置的自控投用率、气化炉数字孪生、多变量协同约束控制3方面介绍先进控制技术在煤气化装置中的应用与研究进展。结果表明:通过回路整定软件PID-GO对1号气化炉系统的35条控制回路进行PID整定,气化装置的优良投用率由44%提高至84%以上,自控投用率由65%提高至91%以上;通过Unisim建立了稳态和动态数字孪生模型。通过稳态模型计算的合成气温度、粗合成气流量及主要气体组分均能与运行值吻合,模拟相对误差小于5%,动态模型捕捉到煤浆流量在1 min内由140 m^(3)/h降至100 m^(3)/h,出现气化温度由1276℃升高至1461℃的短时间超温现象;在仿真平台上实现了多变量协同优化软件PD-Master与Unisim模型的动态链接,通过PD-Master的滚动优化,气化炉的优化变量均达到了既定目标,氧煤比、气化炉温、合成气流量及有效气含量计算值与目标值误差在2.2%以内,其中权重最高的变量C_(V1)和C_(V2)的计算偏差分别为-0.06%和0.11%。

关键词：先进控制煤气化 PID整定数字孪生

The Effect of Baroreflex Function on Blood Pressure Variability

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International Journal of Clinical Medicine 2013年第9期4卷 378-383页

作者： Xiufang Wei xinhui fang Lina Ren Yanyan Meng Zixin Zhang Yongquan Wang Guoxian Qi Department of Cardiology The First Affiliated Hospital China Medical University Shenyang China.

Objective: The aim of this study was to assess the relationship of blood pressure variability (BPV) and heart rate variability (HRV) to investigate the effect of baroreflex function on blood pressure variability. Methods: This study consisted of 111 subjects, including 32 normotensives and 79 hypertensives. All the subjects were given two concurrent tests: 24-hour Holter ECG and ambulatory blood pressure monitoring. According to standard deviation of normal-to-normal sinus RR intervals (SDNN) derived from the Holter ECG, the hypertensives were divided into two groups: an HRV normal group with SDNN > 100 ms and an HRV abnormal group with

关键词： Blood Pressure Variability Heart Rate Variability Baroreflex Function Hypertension

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琼脂糖电内渗对电泳的影响

生物化学与生物物理进展 1997年第3期24卷 268-272页

作者：郭尧君李辛晖方勇中国科学院生物物理研究所北京100101

用电内渗不同 ( 0、0 0 3、0 0 8、0 2 0mr)的琼脂糖制成凝胶或电极缓冲液凝胶条 ,观察对电泳行为的影响 .结果表明等电聚焦电泳必须使用无电内渗琼脂糖 .不同电内渗的琼脂糖制成的电极缓冲液凝胶条对SDS电泳无显著影响 ,但对常规聚... 详细信息

用电内渗不同 ( 0、0 0 3、0 0 8、0 2 0mr)的琼脂糖制成凝胶或电极缓冲液凝胶条 ,观察对电泳行为的影响 .结果表明等电聚焦电泳必须使用无电内渗琼脂糖 .不同电内渗的琼脂糖制成的电极缓冲液凝胶条对SDS电泳无显著影响 ,但对常规聚丙烯酰胺凝胶电泳有不同程度的影响 ,电内渗越高 ,越不利于电泳的进行 .

关键词：电泳琼脂糖电内渗生物物理学技术

Lumican Inhibits Angiogenesis by Effecting the Invasion of Endothelial Cells

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Lumican Inhibits Angiogenesis by Effecting the Invasion of E...

中国生理学会基质生物学专业委员会成立大会暨第一次全国基质生物学学术会议

作者： xinhui fang Ling Ma Haiying Ma Xiaomei Lu Yunan Jin Lili Du Yanqiu Yu Department of Cardiology The First Affiliated Hospital of China Medical UniversityPeople's Republic of China Department of Pathophysiology China Medical UniversityPeople's Republic of China Department of Pathophysiology China Medical University

Background:Lumican,a class Ⅱ small leucine-rich proteoglycans,have been designated key roles in extracellular matrix *** number of evidence shows that Lumican,as an important modulator of biological functions,suppresses *** tested its effects on angiogenesis in vitro and vasculogenesis in vivo and roles on the control of biological behavior of human umbilical vein endothelial cells(HUVEC).Materials and methods:Effect of lumican on vascular development in vivo was evaluated by measuring large vessel structure and liver small vessel density both lumican over-expression mice and wild-type *** angiogenesis in vitro by aortic ring assays in *** in proliferation,adhesion,migration by lumican were analyzed in ***:we found lumican suppressed capillary tube formation in aortic ring assays,but there were not dramatical difference in vivo vascular development between lumican overexpressed mice and wildtype *** lumcan inhibited HVUEC invasion and adhesion on 3.5 h time point but not proliferation and ***:Altogether,our results suggest that lumcan inhibits angiogenesis in vitro by effecting endothelial cells *** vivo,a complicated environment inwhere abundant promoters and inhibitors of angiogenesis coexist,effects of lumican can not be observed.

关键词： Lumican Vasculogenesis Angiogenesis human umbilical vein endothelial cells

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素描中人头部立体结构的认识与表现

湖北工程学院学报 2010年第S1期31卷 147-148页

作者：方新晖孝感市实验高级中学湖北孝感432000

在素描中,人头部块面要着重表现明暗交界线和边缘线地带。

关键词：立体结构自然造型明暗交界线解剖结构

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速写绘画的整体理念

湖北工程学院学报 2010年第S1期31卷 149-150页

作者：方新晖孝感市实验高级中学湖北孝感432000

学生在画速写时要遵循从整体出发进到局部,又回到整体的绘画规律。

关键词：整体步骤规律