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Deep eutectic solvent-driven self-assembly of metal mercaptide complexes with enzyme-mimicking activities for detection of uric acid through one-step cascade catalytic reaction

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Green Chemical Engineering 2024年第1期5卷 75-84页

作者： Jean Claude Munyemana Jia Chen xin li Yangxia Han Hao Tang Hongdeng Qiu CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou730000China University of Chinese Academy of Sciences Chinese Academy of SciencesBeijing100039China Department of Pharmacy Gansu Provincial HospitalLanzhou730000China

This work presents a generic strategy to create a series of metal mercaptides complexes via coordination selfassembly between transition metals(Mn,Cu,Co,Fe,and Ni)and cysteine(Cys)by forming the sulfur-metal *** strategy involves dissolving metal chlorides and Cys into deep eutectic solvents(DES),followed by the precipitation of metal mercaptides complexes(such as Cys-Mn)by adding water as an antisolvent,where DES serves as the solvent,shape directing,and capping agent,thereby preventing the formation of other metal ***,the prepared complexes possess both laccase and peroxidase-like properties,allowing the design of a technique for the detection of L-3,4-dihydroxyphenylalanine(L-DOPA)and uric acid,*** prepared Cys-Mn can linearly oxidize L-DOPA with its concentrations from 0.1 to 130μM and the detection limit was calculated to be 75.5 n ***,the Cys-Mn can mimic the activity of peroxidase towards oxidization of o-phenylenediamine at neutral p H,allowing single-step and one-pot cascade reactions for visual and fluorometric measurements of uric acid(UA)that could work in the range of 0.2-500μM UA with a detection limit of 0.06μM and 0.054μМ,*** assay was successful in detecting UA in serum and urine samples with relative standard deviation(RSD)ranging from 7.3%to 10.2%and 3.0%-8.5%respectively,suggesting that it may prove useful in medical diagnostic testing.

关键词： Metal-mercaptides Deep eutectic solvents Self-assembly Peroxidase-mimic catalyst Uric acid detection

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Ultrasonographic evaluation of the rete testis thickness:a promising approach to differentiate obstructive from nonobstructive azoospermia

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Asian Journal of Andrology 2023年第6期25卷 725-730页

作者： xin li Ru-Hui Tian Peng li Chun-Xiao li Ming-Hua Yao Chen-Cheng Yao Xiao-Bo Wang li-Ren Jiang Zheng li Rong Wu Department of Ultrasound Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai 200080China Department of Andrology The Center for Men’s HealthUrologic Medical CenterShanghai Key Laboratory of Reproductive MedicineShanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai 200080China Department of Pathology Shanghai General HospitalShanghai Jiao Tong University School of MedicineShanghai 200080China

This study aimed to evaluate the ability of rete testis thickness(RTT)and testicular shear wave elastography(SWE)to differentiate obstructive azoospermia(OA)from nonobstructive azoospermia(NOA).We assessed 290 testes of 145 infertile males with azoospermia and 94 testes of 47 healthy volunteers at Shanghai General Hospital(Shanghai,China)between August 2019 and October *** testicular volume(TV),SWE,and RTT were compared among patients with OA and NOA and healthy *** diagnostic performances of the three variables were evaluated using the receiver operating characteristic *** TV,SWE,and RTT in OA differed significantly from those in NOA(all P≤0.001)but were similar to those in healthy *** with OA and NOA were similar at TVs of 9–11 cm^(3)(P=0.838),with sensitivity,specificity,Youden index,and area under the curve of 50.0%,84.2%,0.34,and 0.662(95%confidence interval[CI]:0.502–0.799),respectively,for SWE cut-off of 3.1 kPa;and 94.1%,79.2%,0.74,and 0.904(95%CI:0.811–0.996),respectively,for RTT cut-off of 1.6 *** results showed that RTT performed significantly better than SWE in differentiating OA from NOA in the TV overlap *** conclusion,ultrasonographic RTT evaluation proved a promising diagnostic approach to differentiate OA from NOA,particularly in the TV overlap range.

关键词： azoospermia differential diagnosis rete testis thickness shear wave elastography

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Facile preparation of N-doped corncob-derived carbon nanofiber efficiently encapsulating Fe2O3 nanocrystals towards high ORR electrocatalytic activity

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Journal of Energy Chemistry 2020年第5期29卷 121-130页

作者： Wei Yan Yanling Wu Yanli Chen Qi liu Kang Wang ning Cao Fangna Dai Xiyou li Jianzhuang Jiang School of Materials Science and Engineering China University of Petroleum(East China)Qingdao 266580ShandongChina Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials Department of ChemistryUniversity of Science and Technology BeijingBeijing 100083China

Facile preparation of cost-effective and durable porous carbon-supported non-precious-metal/nitrogen electrocatalysts for oxygen reduction reaction(ORR)is extremely important for promoting the commercialized applications of such *** this work,the FeCl3-containing porphyrinato iron-based covalent porous polymer(FeCl3·FeP or-CPP)was fabricated in-situ onto porous corncob biomass supports via a simple one-pot *** thermal-reduction pyrolysis at 700℃-900℃with CO2 gas as an activating agent resulted in Fe2O3-decorated and N-doped graphitic carbon composite Fe2O3@NC&bio-C with a high degree of graphitization of Fe-involved promotion during pyrolysis(Fe2O3=FeCl3·FePor-CPP derived Fe2O3;NC=N-doped graphene analog;bio-C=the corncob-derived hierarchically porous graphitic biomass carbon framework).The derivedα-Fe2O3 andγ-Fe2O3 nanocrystals(5-10 nm particle diameter)were all immobilized on the N-doped bio-C micro/***,the Fe2O3@NC&bio-C obtained at the pyrolysis temperature of 800℃(Fe2O3@NC&bio-C-800),exhibited unusual ORR catalytic efficiency via a 4-electron pathway with the onset and half-wave potentials of 0.96 V and 0.85 V ***,*** addition,Fe2O3@NC&bio-C-800 also exhibited a high and stable limiting current density of-6.0 mA cm-2,remarkably stability(larger than 91%retention after 10000 s),and good methanol *** present work represents one of the best results for iron-based biomass material ORR catalysts reported to *** high ORR activity is attributed to the uniformly distributedα-Fe2O3 andγ-Fe2O3 nanoparticles on the N-enriched carbon matrix with a large specific surface area of 772.6 m^2 g^-*** facilitates favor faster electron movement and better adsorption of oxygen molecules on the surface of the ***,comparative studies on the structure and ORR catalytic activity of Fe2O3@NC&bioC-800 with Fe2O3@bio-C-800 and NC&bio-C-800 clearly highlight the synergistic effect of the coexisting Fe2

关键词： Porphyrin iron polymer Corncob Fe2O3 Biomass carbon Oxygen reduction reaction

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A joint optimization algorithm for focused energy delivery in precision electronic warfare

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Defence Technology（防务技术） 2022年第4期18卷 709-721页

作者： Zhong-ping Yang Shu-ning Yang Qing-song Zhou Jian-yun Zhang Zhi-hui li Zhong-rui Huang College of Electronic Engineering National University of Defense TechnologyHe FeiChina

Focused energy delivery(FED) is a technique that can precisely bring energy to the specific region,which arouses wide attention in precision electronic warfare(PREW).This paper first proposes a joint optimization model with respect to the locations of the array and the transmitted signals to improve the performance of *** the problem is nonconvex and NP-hard,particle swarm optimization(PSO) is adopted to solve the locations of the array,while designing the transmitted signals under a feasible array is considered as a unimodular quadratic program(UQP) subproblem to calculate the fitness criterion of *** the PSO-UQP framework established,two methods are presented for the UQP subproblem,which are more efficient and more accurate respectively than previous ***,a threshold value is set in the framework to determine which method to adopt to take full advantages of the methods ***,we obtain the maximum localization error that FED can tolerate,which is significant for implementing FED in *** results are provided to demonstrate the effectiveness of the joint optimization algorithm,and the correctness of the maximum localization error derived.

关键词： Focused energy delivery Localization error Particle swarm optimization Precision electronic warfare Unimodular quadratic program

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Modification of inorganic binder used for sand core-making in foundry practice

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China Foundry 2020年第5期17卷 341-346页

作者： Fang-hai xin Wei-hua liu Lai Song Ying-min li Shenyang University of Technology Shenyang 110870China

With modified water glass as binder and the introduction of micro silicon powders into the coremaking process,an improvement was made to the tensile strength and collapsibility of the sand *** potassium hydroxide,sodium hexametaphosphate and white sugar were applied as the modifiers of water *** optimum proportion of the modifiers was determined through the combination of single factor test and orthogonal *** optimum proportion of water glass,potassium hydroxide,sodium hexametaphosphate and white sugar is 1000:40:5:5(wt.).In terms of weight,modified binder and micro silicon powders accounted for 2%and 0.6%of sand,*** sand core was hardened by going through a warm core box process,in which the temperature of core box was 150°C,and the compressed hot air was blown at 120°C for 40 s under a pressure of 0.2 *** for the sand core bonded with modified water glass,the tensile strength is 2.46 MPa at room temperature(σ0)and 2.49 MPa at 25°C and 40%RH for 24 h(σ24),which are 2 times more than that with unmodified *** bonded strengths of sand core are increased as a result of the reaction between-OH groups from addition of potassium hydroxide and SiO2 particles widely distributed in the sand *** with the sand core bonded with unmodified water glass,the high temperature residual tensile strength(σr)of sand core bonded with modified water glass under 600°C for 5 min,is sharply reduced from 0.20 MPa to 0.01 *** the comparison with unmodified water glass,the dynamic viscosity of the modified water glass and the flowability of molding sand using modified water glass are increased from 74 mPa·s and 2.15 g to 80 mPa·s and 2.21 g,*** revealed by FT-IR analysis,new groups including PO3-,PO43-,and Si-O-C appear in the molecular structure of modified water glass,which are beneficial to the collapsibility of sand core.

关键词： inorganic binder modified water glass tensile strength collapsibility warm box core-making process

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Self-management and self-efficacy status in liver recipients

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Hepatobiliary & Pancreatic Diseases International 2015年第3期14卷 253-262页

作者： Lei xing Qin-Yun Chen Jia-ning li Zhi-Qiu Hu Ye Zhang Ran Tao Center for Organ Transplantation and Department of Surgery Ruijin Hospital Shanghai Jiaotong University School of Medicine Nursing School Shanghai Jiaotong University School of Medicine Department of General Surgery Central Hospital of Minhang District

BACKGROUND： liver transplantation （LT） is a viable treatment for patients with end-stage chronic liver diseases. The main aim of LT is to prolong life and improve life quality. However, although survival after LT continues to improve, some aspects of recipient＇s health-related quality of life such as self-man- agement and self-efficacy have been largely ignored.

关键词： liver transplantation self-management self-efficacy quality of life questionnaires

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High-performance liquid-phase catalytic purification of phosphine in tail gas using Pd(Ⅱ)/Cu(Ⅱ)composite

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Chinese Journal of Chemical Engineering 2023年第5期57卷 98-108页

作者： Chenyang Zhao Yinhan Cheng Guangfei Qu Yongheng Yuan Fenghui Wu Ye liu Shan liu Junyan li Ping ning Faculty of Environmental Science and Engineering Kunming University of Science and TechnologyKunming 650500China National-Regional Engineering Research Center for Recovery of Waste Gases from Metallurgical and Chemical Industries-NCW Kunming 650500China

Pd/Cu liquid-phase composite was utilized as the catalyst in this study to remove PH_(3) at low *** anti-heterotoxicity of catalysts in the PH_(3) catalytic oxidation purification process was carefully explored and *** catalytic performance,thermodynamics,kinetics,and catalytic oxidation mechanism of Pd/Cu liquid-phase catalyst catalytic oxidation of PH_(3) were thoroughly *** results showed that Pd/Cu has a superior catalytic effect on the removal of PH_(3) in the gas mixture under low *** CO as the carrier gas,the removal efficiency of PH_(3) could be maintained at 100%for nearly 450 min,indicating that the Pd/Cu liquid phase catalyst has good resistance to *** to the thermodynamic,kinetic,and related characterization results of the PH_(3) purification process,the kinetic region of the gas–liquid reaction of PH_(3) absorption by Pd/Cu solution was an interfacial *** was the primary catalyst and Cu was the secondary catalyst,and the adsorption of PH_(3)was a primary ***_(3) was spontaneously oxidized to H_(3)PO_(4) in the Pd/Cu catalytic system during the removal *** was regenerated by O_(2) and Cu,increasing the activity and stability of the Pd/Cu catalyst in the sustain and efficient purification of PH_(3) in tail gas.

关键词： liquid-phase catalysis Phosphine Catalytic oxidation Kinetic analysis Transition metals

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Integration of artificial intelligence and multi-omics in kidney diseases

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Fundamental Research 2023年第1期3卷 126-148页

作者： Xu-Jie Zhou Xu-Hui Zhong li-xin Duan Renal Division Peking University First HospitalBeijing 100034China Kidney Genetics Center Peking University Institute of NephrologyBeijing 100034China Key Laboratory of Renal Disease Ministry of Health of ChinaBeijing 100034China Key Laboratory of Chronic Kidney Disease Prevention and Treatment(Peking University) Ministry of EducationBeijing 100034China Department of Pediatrics Peking University First HospitalBeijingChina The Big Data Research Center University of Electronic Science and Technology of ChinaNo.2006Xiyuan AveWest Hi-Tech ZoneChengdu 611731China

Kidney disease is a leading cause of death ***,the diagnosis of kidney diseases and the grading of their severity are mainly based on clinical features,which do not reveal the underlying molecular *** recent surge of∼omics studies has greatly catalyzed disease *** advent of artificial intelligence(AI)has opened the avenue for the efficient integration and interpretation of big datasets for discovering clinically actionable *** review discusses how AI and multi-omics can be applied and integrated,to offer opportunities to develop novel diagnostic and therapeutic means in kidney *** combination of new technology and novel analysis pipelines can lead to breakthroughs in expanding our understanding of disease pathogenesis,shedding new light on biomarkers and disease classification,as well as providing possibilities of precise treatment.

关键词： Artificial intelligence Kidney diseases Multi-omics Network Pathway Precision medicine

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Ultrathin, flexible, and high-strength Ni/Cu/metallic glass/Cu/Ni composite with alternate magneto-electric structures for electromagnetic shielding

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Journal of Materials Science & Technology 2021年第22期81卷 43-50页

作者： Zenan Ma Jiawei li Jijun Zhang Aina He Yaqiang Dong Guoguo Tan Mingqiang ning Qikui Man xincai liu Faculty of Materials Science and Chemical Engineering Ningbo UniversityNingbo315211China CAS Key Laboratory of Magnetic Materials and Devices and Zhejiang Province Key Laboratory of Magnetic Materials and Application TechnologyNingbo Institute of Materials Technology&EngineeringChinese Academy of SciencesNingbo315201China Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of ChinaChengdu610054China

Electromagnetic interference(EMI)shielding materials with ultrathin,flexible,superior mechanical and thermal management properties are highly desirable for smart and wearable ***,ultrathin and flexible Ni/Cu/metallic glass/Cu/Ni(Ni/Cu/MG)multilayer composite with alternate magnetic and electrical structures was designed via facial electroless plating of Cu and Ni on an Fe-based metallic *** resultant 0.02 mm-thick Ni/Cu/MG composite displays a superior EMI shielding effectiveness(EMI SE)of 35 dB and a great EMI SE/t of 1750 dB/mm,which is greater than those of composites with monotonous multilayer or homogeneous *** improved EMI SE originates from the massive ohmic losses,the enhanced internal reflection/absorption,and the abundant interfacial polarization ***,Ni/Cu/MG exhibits a high tensile strength of up to 1.2 GPa and outstanding mechanical stability,enabling the EMI SE remains unchanged after 10,000 times of ***,Ni/Cu/MG has excellent Joule heating characteristics and thermal stability,which is very suitable for heating components of wearable hyperthermia devices.

关键词： Electromagnetic shielding Thermal management Mechanical properties Fe-based metallic glasses Alternate magnetic and electrical structures

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Asymmetric Hydrogenation of Tetrapyridine-Type N-Heteroarenes Using Phosphine-Free Ruthenium Diamine Catalysts

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Chinese Journal of Chemistry 2023年第24期41卷 3573-3578页

作者： Chenghao li Shu-xin Zhang Yu Feng Yan-Mei He Qing-Hua Fan Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Recognition and FunctionInstitute of Chemistry Chinese Academy of SciencesBeijing100190 China University of Chinese Academy of Sciences Beijing100049 China

Chiral ruthenium-catalyzed enantioselective hydrogenation of tetrapyridine-type N-heteroarenes was firstly *** partial reduction of adjacent tetraheteroaromatic substrates proceeded smoothly in the presence of phosphine-free chiral cationic ruthenium diamine complexes,affording unprecedented high reactivity,enantioselecitivity and diastereoselectivity(up to 93%yield,>99%ee and 92:8 dr).The potential application of chiral tetradentate pyridine-amine products as chiral ligands has been demonstrated in the Cu-catalyzed asymmetric Friedel–Crafts alkylation reaction between indoles and nitroalkenes.

关键词： Asymmetric catalysis Chiral nitrogen ligands N-Heteroarenes Hydrogenation Ruthenium

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