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Chinese Journal of Chemical Physics 2020年第6期33卷 749-756,I0003页

作者： Xue-zheng Zhou Xiang-yang Yan Ling Zhu Ming Ma Ya Dai Chang-guo Wang Li-jun Zhu Ke-jie Yu Shao-min Liu chongqing key laboratory of scientic utilization of tobacco resources Chongqing 400060China Department of Chemistry University of Science and Technology of ChinaHefei 230026China

A new kind of phenyl-functionalized magnetic fibrous mesoporous silica(Fe3 O4@Si O2@KCC-1-phenyl) was prepared by copolymerization as an efficient adsorbent for the magnetic extraction of phthalate esters from environmental water samples. The obtained Fe3 O4@Si O2@KCC-1-phenyl showed monodisperse fibrous spherical morphology, fairly strong magnetic response(29 emu/g), and an abundant π-electron system, which allowed rapid isolation of the Fe3 O4@Si O2@KCC-1-phenyl from solutions upon applying an appropriate magnetic field. Several variables that affect the extraction efficiency of the analytes,including the type of the elution solvent, amount of adsorbent, extraction time and reusability, were investigated and optimized. Under optimum conditions, the Fe3 O4@Si O2@KCC-1-phenyl was used for the extraction of four phthalate esters from environmental water samples followed by high-performance liquid chromatographic analysis. Validation experiments indicated that the developed method presented good linearity(0.1-20 ng/m L), low limit of detection(7.5-29 μg/L, S/N =3). The proposed method was applied to the determination of phthalate esters in different real water samples, with relative recoveries of 93%-103.4%and relative standard deviation of 0.8%-8.3%.

关键词： Fibrous mesoporous silica Phenyl-functionalized Magnetic solid-phase ex-traction High performance liquid chromatography Phthalate esters Environmental water

Innovative dual-mode device integrating capacitive desalination and solar vapor generation for high-efficiency seawater desalination

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Journal of Energy Chemistry 2025年第1期 171-179页

作者： Jiacheng Wang Zhaoyu Chen Ruduan Yuan Jiaxin Luo Ben Zhang Keju Ji Meng Li Juanxiu Xiao Kuan Sun National Innovation Center for Industry-Education Integration of Energy Storage Technology MOE Key Laboratory of Low-grade Energy Utilization Technologies and SystemsCollege of Energy & Power Engineering Chongqing University Xuefeng Mountain Energy Equipment Safety National Observation and Research Station CQU-NUS Renewable Energy Materials & Devices Joint Laboratory Chongqing University Southwest Technology and Engineering Research Institute Jiangsu Provincial key laboratory of Bionic Functional Materials College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and Astronautics State key laboratory of Marine resources utilization in South China Sea Collaborative Innovation Center of Marine Science and Technology School of Marine Science and Engineering Hainan University

Solar-driven interface evaporation with high solar-to-steam conversion efficiency has shown great potential in seawater ***,due to the influence of latent heat and condensation efficiency,the water yield from solar-driven interface evaporation remains insufficient,posing a significant challenge that requires *** this work,we designed a dual-mode high-flux seawater desalination device that combines solar-driven interface evaporation and capacitive *** utilizing coupled desalination materials exhibiting both photothermal conversion and capacitance activity,the device demonstrated photothermal evaporation rates of 1.41 and 0.97 kg m-2h-1for condensate water yield under one-sun ***,the device exhibited a salt adsorption capacity of up to48 mg g-1and a salt adsorption rate of 2.1 mg *** addition,the salt adsorption capacity increased by approximately 32% under one-sun ***,photo-enhanced capacitive desalination performance was explored through numerical simulations and theoretical *** calculations and characterizations confirmed that the defect energy levels formed by the introduction of sulfur vacancies can effectively widen the light absorption range,improve photothermal conversion performance,and stimulate more photoelectrons to participate in capacitive ***,the electron distribution state of molybdenum disulfide with sulfur vacancies and surface defect sites contributes to ion/electron transport at the solid-liquid *** work provides a novel pathway for integrating solar vapor generation with other low-energy desalination technologies.

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The contribution of water molecules to the hydrogen evolution reaction

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Science China Chemistry 2022年第10期65卷 1854-1866页

作者： Chao Cheng Mingming Deng Li Li Zidong Wei chongqing key laboratory of Catalysis and New Environmental Materials College of Environment and ResourcesChongqing Technology and Business UniversityChongqing 400067China The State key laboratory of Power Transmission Equipment&System Security and New Technology Chongqing Key Laboratory of Chemical Process for Clean Energy and Resource UtilizationCollege of Chemistry and Chemical EngineeringChongqing UniversityChongqing 400044China

Traditionally,water molecules act as solvents in most chemical reactions,whereas they act as solvents and reactants in the alkaline electrolyte for the hydrogen evolution reaction(HER).It is well known that there is a current plateau in the linear potential–current dependence for HER in neutral or near-neutral electrolytes,showing that the HER is governed by the mass transport of reactive hydronium species at a given *** sharp rise in the current signal after the plateau at a slightly higher overpotential indicates that HER is supported by a new reactant,namely the water molecules rather than the limited hydronium ***,in combination with our own research experience in water electrolysis,we review the relevant literature in these years about the HER activity descriptor and mainly focus on the contribution of water molecules to the HER,including their dissociation,configuration,and composition in regulating the pH-dependent ***,we try to provide new insights into understanding the mechanism of the HER in terms of interfacial water enrichment,orientation,and configuration with the electric field strength of electrode/electrolyte interface and electrode compositions.

关键词： water electrolysis hydrogen evolution reaction interfacial water

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Analysis of Crystallization Behavior of Mold Fluxes Containing TiO_2 Using Single Hot Thermocouple Technique

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Journal of Iron and Steel Research International 2016年第4期23卷 322-328页

作者： Yun LEI Bing XIE Wen-hui MA State key laboratory of Complex Nonferrous Metal resources Clean utilization Kunming University of Science and Technology College of Materials Science and Engineering Chongqing University

The crystallization behavior of mold fluxes containing 0-8 mass% TiO2 was investigated using the single hot therrnocouple technique （SHTT） and X ray diffraction （XRD） to study the possible effects on the coordination of heat transfer control and strand lubrication for casting crack sensitive peritectic steels. Time-temperature-transforma tion （TTT） and continuous-cooling transformation （CCT） curves were plotted using the data obtained from SHTT to characterize the crystallization of the mold fluxes. The results showed that crystallization of the mold fluxes during isothermal and non-isothermal processes was suppressed with TiO2 addition. From the TTT curves, it could be seen that the incubation and growth time of crystallization increased significantly with TiO2 addition. The CCT curves showed that the crystallization temperature initially decreased, and then suddenly increased with increasing the TiO2 content. XRD analysis suggested the presence of cuspidine in the mold fluxes with lower TiO2 content （〈4 mass%） , while both perovskite and cuspidine were detected in the mold fluxes when the TiO2 content was increased to 8 mass%. In addition, the growth mechanisms of the crystals changed during the isothermal crystallization process from interface controlled growth to diffusion-controlled growth with increasing the TiO2 content.

关键词： mold flux single hot thermocouple technique kinetics crystallization TTT curve CCT curve

DEFB126 polymorphisms and association with idiopathic asthenozoospermia in China

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Asian Journal of Andrology 2022年第6期24卷 607-614页

作者： Jiao-Yu He Jian-Ying Peng Qiu-Fu Li Xiao-Li Lin Yan-Ru Cui Shi-Yu Ma Shi-Yun Fan Yi-Ran Liu Zhi-Lin Song Jun-Hang Deng Xia Wei Xian-Ping Ding key laboratory of Bio-resources and Eco-Environment of Ministry of Education College of Life SciencesSichuan UniversityChengdu 610065China chongqing Nanchuan Biotechnology Research Institute Bio-resource Research and Utilization Joint Key Laboratory of Sichuan and ChongqingChongqing 400000China

Idiopathic asthenozoospermia,a common factor in male infertility,is characterized by altered sperm motility function in fresh *** theβ-defensin 126(DEFB126)protein is associated with asthenozoospermia,DEFB126 gene polymorphisms have not been extensively ***,the association between DEFB126 gene polymorphisms and asthenozoospermia requires further *** was performed by semen analysis,karyotype analysis,and Y microdeletion detection,and 102 fertile men and 106 men with asthenozoospermia in Chengdu,China,were selected for DEFB126 gene sequence *** nucleotide mutations and two nucleotide deletions in the DEFB126 gene were ***11467417(317-318 del/del),rs11467497(163-166 wt/del),c.152T>C,and c.227A>G were significantly different between the control and asthenozoospermia groups,likely representing high-risk genetic factors for asthenozoospermia among ***126 expression was not observed in sperm with rs11467497 homozygous deletion and was unstable in sperm with rs11467417 homozygous *** rs11467497 four-nucleotide deletion leads to truncation of DEFB126 at the carboxy-terminus,and the rs11467417 binucleotide deletion produces a non-stop messenger RNA(mRNA).The above deletions may be responsible for male hypofertility and infertility by reducing DEFB126 affinity to sperm *** on in silico analysis,the amino acids 51M and 76K are located in the highly conserved domain;c.152T>C(M51T)and c.227A>G(K76R)are predicted to be damaging and capable of changing alternative splice,structural and posttranslational modification sites of the RNA,as well as the secondary structure,structural stability,and hydrophobicity of the protein,suggesting that these mutations are associated with asthenozoospermia.

关键词： β-defensin 126 idiopathic asthenozoospermia in silico analysis single-nucleotide polymorphisms

Association of polymorphisms in glutathione S-transferase genes （GSTM1, GSTT1, GSTP1） with idiopathic azoospermia or oligospermia in Sichuan, China

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Asian Journal of Andrology 2015年第3期17卷 481-486页

作者： Da-Ke Xiong key laboratory of Bio-resources and Eco-Environment Ministry of Education School of Life Science Institute of Medical Genetics Sichuan University Chengdu China Bio-resource Research and utilization Joint key laboratory of Sichuan and chongqing Chengdu China Biotechnology Academy of Nanchuan Chongqing China

The reported effects of the glutathione S-transferase （GSTs） genes （GSTM1, GSTTI, and GSTP1） on male factor infertility have been inconsistent and even contradictory. Here, we conducted a case-control study to investigate the association between functionally important polymorphisms in GST genes and idiopathic male infertility. The study group consisted of 361 men with idiopathic azoospermia, 118 men with idiopathic oligospermia, and 234 age-matched healthy fertile male controls. Genomic DNA was extracted from the peripheral blood, and analyzed by polymerase chain reaction and restriction fragment length polymorphism analysis. There was a significant association between the GSTP1 variant genotype （lle/Val ＋ Val/Val） with idiopathic infertility risk （odds ratio [OR]： 1.53; 95% confidence interval [CI]： 1.11-2.11; P = 0.009）. Similarly, a higher risk of infertility was noted in individuals carrying a genotype combination of GSTTI-null and GSTP1 （lle/Val ＋ ValNal）（OR： 2.17; 95% Cl： 1.43-3.31; P = 0.0002）. These results suggest an increased risk of the GSTPI variant genotype （lle/Val ＋ Val/Val） for developing male factor infertility. Our findings also underrate the significance of the effect of GSTM1 and/or GSTT1 （especially the former） in modulating the risk of male infertility in males from Sichuan, southwest China.

关键词： genetic polymorphism glutathione S-transferase idiopathic infertility male factor

A novel box-counting method for quantitative fractal analysis of threedimensional pore characteristics in sandstone

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International Journal of Mining Science and Technology 2024年第4期34卷 479-489页

作者： Huiqing Liu Heping Xie Fei Wu Cunbao Li Renbo Gao State key laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400030China School of resources and Safety Engineering Chongqing UniversityChongqing 400030China Guangdong Provincial key laboratory of Deep Earth Sciences and Geothermal Energy Exploitation and utilization Shenzhen UniversityShenzhen 518060China Shenzhen key laboratory of Deep Underground Engineering Sciences and Green Energy College of Civil and Transportation EngineeringShenzhen UniversityShenzhen 518060China

Fractal theory offers a powerful tool for the precise description and quantification of the complex pore structures in reservoir rocks,crucial for understanding the storage and migration characteristics of media within these *** with the challenge of calculating the three-dimensional fractal dimensions of rock porosity,this study proposes an innovative computational process that directly calculates the three-dimensional fractal dimensions from a geometric *** employing a composite denoising approach that integrates Fourier transform(FT)and wavelet transform(WT),coupled with multimodal pore extraction techniques such as threshold segmentation,top-hat transformation,and membrane enhancement,we successfully crafted accurate digital rock *** improved box-counting method was then applied to analyze the voxel data of these digital rocks,accurately calculating the fractal dimensions of the rock pore *** numerical simulations of permeability experiments were conducted to explore the physical correlations between the rock pore fractal dimensions,porosity,and absolute *** results reveal that rocks with higher fractal dimensions exhibit more complex pore connectivity pathways and a wider,more uneven pore distribution,suggesting that the ideal rock samples should possess lower fractal dimensions and higher effective porosity rates to achieve optimal fluid transmission *** methodology and conclusions of this study provide new tools and insights for the quantitative analysis of complex pores in rocks and contribute to the exploration of the fractal transport properties of media within rocks.

关键词： 3D fractal analysis Fractal dimension Rock pore structure Box-counting method Permeability simulation Computational geosciences

Reversible adhesion surface coating proppant

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Chinese Chemical Letters 2021年第1期32卷 553-556页

作者： Quan Xu Fan Fan Zhaohui Lu Mao Sheng Shouceng Tian Ye Zhang Linhua Pan Yang Zhou State key laboratory of Petroleum resources and Prospecting Beijing Key Laboratory of Biogas Upgrading UtilizationHarvard SEAS-CUPB Joint Laboratory on Petroleum ScienceChina University of Petroleum(Beijing)Beijing 102249China National Joint Engineering Research Center for Shale Gas Exploration and Development Chongqing Institute of Geology and Mineral ResourcesChongqing 401120China

Proppant is a key material in the hydraulic fracturing process,which has been widely used in unconventional oil *** proppants are easy to sedimentate and accumulate at the entrance of shale fracture,which will block the diversion of water,oil and *** proppants(CPs) are fabricated by coating resin on normal ceramic proppants through a simple method,which is dramatically enhanced the supporting properties in shale fracture and easy to scale *** with uncoated ceramic proppants,the self-suspension ability of CPs is ~11 times higher,which are able to migrate and distribute farther and deeper inside the *** the same time,Coating enhanced the 23.7% of adhesive force in maximum,which makes the CPs easier to adhere on the fracture surface to supportthe shale ***,the liquid conductivity of CPs is 60% higher than uncoated ceramic proppants at13.6 MPa *** method is expected to fabricated varieties of proppantsfor shale fracture supporting to improve the exploration of unconventional oil and gas resources.

关键词： Self-suspension Coating Proppants Hydraulic fracturing process Liquid conductivity

Study on in situ stress testing method based on Kaiser effect of acoustic emission and COMSOL simulation

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Frontiers of Earth Science 2023年第3期17卷 818-831页

作者： Chenyu WANG Dongming ZHANG Shujian LI Yu CHEN Chongyang WANG Kangde REN State key laboratory of Coal Mine Disaster Dynamics and Control Chongqing UniversityChongqing 400044China School of resources and Safety Engineering Chongqing UniversityChongqing 400044China Yunnan Phosphate Chemical Group Co. Ltd.Kunming 650600China National Engineering and Technology Research Center for Development and utilization of Phosphate resources Kunming 650600China

In situ stress testing can improve the safety and efficiency of coal *** the Kaiser effect point is vital for in situ stress calculations;however,the in situ stress calculation is limited by the rock sampling ***,the Kaiser effect point identification theory is established and applied to the Xuyong Coal *** compression and acoustic emission experiments were carried out on sandstone with 6 sampling ***,COMSOL simulation is applied to study the in situ stress distribution in the coal mine to verify the calculation *** results are as follows.1)The failure mode of non-bedded and vertical-bedded rocks is primarily tensile shear failure with obvious brittleness in mechanical and acoustic emission *** slip along the bedding plane is the primary failure mode of inclined-bedded *** take-off points exist in the AE count curve.2)The Kaiser point identification method based on the variation of AE count curve parametersΔti andτi can effectively calculate the in situ *** to the numerical value of Kaiser point and sampling direction,the in situ stress of the conveyor roadway in the Xuyong Coal Mine was calculated asσ1=22.81 MPa,σ2=10.87 MPa andσ3=6.14 MPa.3)By the COMSOL simulation study,it was found that a stress concentration zone of 16.13 MPa exists near the two sides *** with the Kaiser effect method,the deviation rates of the three-direction principal stress calculated by COMSOL were all less than 5%.This verifies that the in situ stress calculation by Kaiser effect in this study can be applied to the Xuyong Coal Mine.

关键词： Coal Mine uniaxial compression acoustic emission COMSOL simulation

Expression and Interaction Analysis of FAZ1 Protein in Brassica oleracea

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Phyton-International Journal of Experimental Botany 2021年第6期90卷 1599-1612页

作者： Hecui Zhang Xiaoping Lian Yizhong Zhang Tonghong Zuo Chongmo Yuan Qinqin Xie Liquan Zhu College of Agronomy and Biotechnology Southwest UniversityChongqing400715China State key laboratory for Conservation and utilization of Bio-resources in Yunnan School of AgricultureYunnan UniversityKunming650091China

To identify and characterize genes involved in reproductive tissue abscission in Brassica oleracea,the transcript data of pollinated pistil was analyzed.A differentially expressed gene,named BoFAZ1(FLOWER ABSCISSION ZONE1)was identified,which contains one exon and encompass a ***,a T-DNA insertion mutant(SALK_302_G01)(faz1 mutant)was obtained from Arabidopsis thaliana mutant *** organ shedding from mutants was delayed and a V-shaped structure in the boundary region between the stalk and torus of the sepal abscission zone was obtained in faz1 *** cell density of this structure was lower than that of the corresponding region in the wild-type *** the transgenic plants,the normal development of the stalk zone of faz1 was recovered completely by transforming a 1919-bp DNA fragment of BoFAZ1 into the faz1 *** Addition,our data showed that BoFAZ1 was expressed in mature pollen grains,but not in the bracts,roots,stems,leaves,and *** expression in the filaments,stigma,and pistil exfoliation layer gradually increased after *** localization experiments showed that BoFAZ1 was located in the cell membrane.A myristoylation site was found at the N-terminus of *** of this site resulted in protein dislocation in the cytoplasm,cell membrane and ***,a yeast two-hybrid test indicated that BoH3.2(histone H3.2),a protein involved in abscission zone development,interacted with *** interaction was verified by a GST pull-down *** summary,our data indicated that BoFAZ1 was involved in the formation of the pistil abscission zone in ***.

关键词： Abscission AZ B.oleracea flower development organ boundary