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Chinese Journal of Polymer Science 2022年第4期40卷 355-364页

作者： wei-na zhang Xiao-Qian Wu Guo Wang Yu-Ai Duan Hua Geng Yi Liao Department of Chemistry Beijing Advanced Innovation Center for Imaging Theory and TechnologyCapital Normal UniversityBeijing 100048China

High-performance ambipolar charge transport materials can reduce the manufacturing cost of OFET and OPV devices,and simplify circuit design and device *** order to obtain ambipolar donor-acceptor(D-A)polymer,many efforts have been made through different donor and acceptor combination,halogenation or heteroatom ***,the influencing factor for charge transport polarity is still much *** on intra-chain super-exchange mechanism for D-A polymer,we found that the energy alignment of donor and acceptor moiety has large impact on charge transport *** the HOMO-LUMO(H-L)gap of the acceptor moiety is narrow,its HOMO/LUMO energy level both lie between the HOMO and LUMO of the donor moiety(sandwich-type energy alignment),and the corresponding D-A copolymers will be more likely ambipolar *** thus,take a narrow H-L gap thiazoleisoindigo(TzIID)acceptor as an example,we demonstrated that a series of TzIID based copolymers combined with wide H-L gap donor moieties can reveal ambipolar *** further predict several high performance ambipolar D-A copolymers(TzIID-TT etc.)with balanced electron and hole transport,whose effective mass(m_(e)^(*)=0.146 and m_(h)^(*)=0.128)is one of the smallest effective masses among ambipolar materials.

关键词： D-A copolymer Ambipolar Super-exchange mechanism Charge transport

On microstructure characterization of Fe-Cr-Ni-Mo-N super-austenitic stainless steel during hot deformation

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Journal of Iron and Steel Research International 2019年第10期26卷 1080-1087页

作者： Yan-sen Hao Jian Li Wan-chun Liu wei-na zhang Zhen-yu Liu State Key Lab for Rolling Technologies and Automation Northeastern UniversityShenyang 110819LiaoningChina

Hot compression tests of Fe-Cr-Ni-Mo-N super-austenitic stainless steel were carried out in the temperature range of 950-1150℃with a strain rate of 0.01-10 s-1,in which dynamic recrystallization(DRX)mechanisms and coincident site lattice(CSL)boundary evolution in consideration of adiabatic heating were *** results show that discontinuous DRX was the main DRX *** to the high stacking fault energy(162-173 mJ/m2),subgrain evolution occurring in dynamic recovery process was stimulated at high temperatures and high strain *** behavior was accelerated by higher strain rate and adiabatic ***,amounts of fine annealing twin boundaries were observed in the specimens deformed at higher strain rates and higher *** analyzing the length fractions of∑3 boundary in overall boundaries and in CSL boundaries,the results indicate that∑3 regeneration mechanism and new twinning mechanism take effect concurrently for twin-related grain boundary when the specimens were deformed at 950℃with a strain rate of 0.01-10 *** increasing strain rate or deformation temperature,the propagation of∑3 boundaries was mainly dominated by new twinning mechanism.

关键词： Super-austenitic stainless steel Dynamic recrystallization Adiabatic heating Coincident site lattice boundary Hot deformation

Effect of Rna interference on WD101 gene of Schistosoma japonicum

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Asian Pacific Journal of Tropical Medicine 2018年第2期11卷 136-140页

作者： Peng zhang Gang Feng wei-na zhang Ying-Ying zhang Chun-Sheng Liu Department of Clinical Laboratory Yijishan Hospital of Wanan Medical College

Objective: To study the effect of Rna interference(Rnai) on WD101 gene and its effect on the expression of WD101 mRna and protein in Schistosoma ***: Doublestranded Rna(dsRna) WD101 gene and control gene(lacZ) were generated by in vitrotranscription and transfected into mechanically transformed *** total Rna and protein were isolated simultaneously using TRIzol *** expression levels of mRna and the protein were determined by quantitative real-time PCR(qPCR) and Western blotting, *** injected dsRna-electroporated schistosomula into BALB/c mouse six weeks, the male and female reproductive organs were observed and measured under the confocal laser scanning ***: After 1, 3 and 5 d of Rnai, WD101 mRna level was decreased by 15%, 39%, and 58% in experiment group compared to that in control group; meanwhile, WD101 protein level was decreased by 11%, 28%, and 43% in experiment group compared to that in control *** were significantly more sperms in testicular lobes in experiment group than that in control group, while there were no significant differences in terms of ovary and vitelline glands between two ***: The ds WD101-Rnai can effectively induce suppression of WD101 gene expression at both mRna and protein ***101 gene might be a reproduction-related gene in Schistosoma japonicum.

关键词： Schistosoma japonicum Rna interference WD101

A displacement sensor of dual-light based on FPGA

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Optoelectronics Letters 2007年第4期3卷 294-298页

作者： HE Ming-xia zhang wei-na zhang Xu StateKeyLaboratoryofprecisionMeasurementTechnology and Instruments Tianjin UniversityTianjin300072China

The dual-light displacement sensor is presented to obtain a higher accuracy compared with the single. The structure and principle of the system are also introduced, and the hardware and software are brought in too. Th... 详细信息

关键词：位移传感器对偶光 FPGA 数据处理

Determination of the degree of pulmonary arteryhypertension by plasma atrial nateiuretic peptide levelsand pulmonary perfusion imaging

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Nuclear Science and Techniques 2000年第4期11卷 223-227页

作者： zhang Cai-Xia, XU wei-na, zhang Yao-Xiang, LI Jian-Ming, LI Zhi-Jie, YU Shu-Peng, LIU Chang-Ping, LI Huan (The 2nd Clinic College, China Medical University, Shenyang 110003) 中国医科大学辽宁沈阳 110008

To evaluate the degree of pulmonary artery hypertension (PAH) and its significance, pulmonary perfusion tomographic imaging (PPTI) and radioimmunoassay of plasma atrial nateiuretic peptide (ANP) levels were examined in different stages of rabbit PAH models, controlled with cardiac catheterization. When the PAH was mild, ANP levels were not significantly changed (t= 1, p >0.05). The mean pulmonary artery pressures (mPAP) measured by catheterization had no significant change, but there was a significant increase of the ratio of dorsal/abdominal counts using pulmonary perfusion tomographic imaging (PPTI) (t=2.5, p <0.05). The ANP levels rose when PAH was moderate or severe, and the difference was significant compared with the control group (t=4 and 6.5, p <0.05). The other two methods also showed significant changes (p <0.01). There was positive correlation between the results of ANP/PPTI, ANP/catheterization, and PPTI/catheterizations (p <0.01). These results suggest that ANP levels can assess the degree of the PAH as a simple method, but it is not as sensitive as that of the PPTI in mild PAH.

关键词：肺部灌注显像肺部疾病诊断肺动脉高血压放射性核素显像 PPTI PAH ANP

Effect of electroacupuncture for reducing the frequency of recurrent cystitis:A case report

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World Journal of Acupuncture-Moxibustion 2021年第4期31卷 251-253页

作者： wei-na zhang Huan CHEN Zhi-shun LIU Beijing University of Chinese Medicine Beijing 100029China Department of Acupuncture Guang'anmen HospitalChina Academy of Chinese Medical SciencesBeijing 100053China Tianjin University of Traditional Chinese Medicine Tianjin 301617China

Introduction:Recurrent cystitis,defined as at least two episodes within six months or three episodes within one year,presented among about one fifth to one-third of women with history of cystitis or urinary tract infection(UTI) according to previous ***,the use of antibiotics can only resolve the urinary symptoms but not reduce the frequency of urinary symptoms recurrence,and meanwhile increasing rates of adverse effect of repetitive antimicrobial therapy and bacterial antimicrobial resistance became clinical *** case report aims to present a case of recurrent cystitis treated by electroacupuncture(EA) in reducing recurrent frequency,amount of antibiotics used and urinary *** presentation:A 42-year-old woman diagnosed with recurrent cystitis for five years presented mainly with recurrent dysuria,urine frequency and *** received EA treatment 3 to 5 sessions a week and 30 min per session from August 2019 to August 2020 with 3-month suspension due to Coronavirus Disease 2019(COVID-19).During the treatment,both the frequency of recurrent urinary episode and symptoms were *** there was some fluctuation,the mean frequencies of daytime voiding reduced dramatically from 17.7 to 8.3,and night-time voiding from 4 to 1,and the number of voiding with moderate urgency was reduced from 17.7 to 2.3,and severe urgency dropped from 2.7 to *** patient’s scores of overactive bladder symptom score(OABSS) and overactive bladder questionnaire short form(OAB-q SF) were also *** postvoid residual urine volume(PVR) reduced from 42 mL to less than 10 mL Conclusion:This case of individual effect of EA for a woman with frequent recurrent cystitis suggested a plausible benefit of EA on reducing frequency,amount of antibiotics used and symptoms of recurrent cystitis,but further research is necessary to proof the efficacy and effectiveness among a wider population.

关键词： Urinary tract infection Recurrent cystitis Electroacupuncture

Depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 335-345页

作者： Feng zhang Chenyang zhang Linlin Wu wei Sun Hongliang zhang Jianhua Chen Yong Pei Songjiang Li Engineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization Hunan International Joint Research Center for Efficient and Clean Utilization of Critical Metal Mineral ResourcesSchool of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China State Key Laboratory of Mineral Processing Beijing General Research Institute of Mining&MetallurgyBeijing 100160China Hunan Provincial Key Laboratory of Micro&nano Materials Interfaces Science College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China Department of Chemistry Xiangtan UniversityXiangtan 411105China China Railway Resource Group Co.Ltd Beijing 102300China

The depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite still lacked in-depth ***,the depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite was further systematically investigated with experiments and density functional theory(DFT)*** X-ray photoelectric spectroscopy(XPS)results,DFT calculation results,and frontier molecular orbital analysis indicated that sulfite ions were difficult to be adsorbed on sphalerite surface,suggesting that sulfite ions achieved depression effects on sphalerite through other non-adsorption ***,the oxygen content in the surface of sphalerite treated with sulfite ions in creased,which enhanced the hydrophilicity of the sphalerite and further increased the difference in hydrophilicity between sphalerite and ***,sulfite ions were chelated with lead ions to form PbSO_(3)in *** hydrophilic PbSO_(3)was more easily adsorbed on sphalerite than *** interaction between sulfite ions and lead ions could effectively inhibit the activation of *** addition the UV spectrum showed that after adding sulfite ions,the peak of perxanthate in the sphalerite treated xanthate solution was significantly stronger than that in the galena with xanthate solution,indicating that xanthate interacted more readily with sulfite ions and oxygen mo lecules within the sphalerite system,leading to the formation of ***,sulfite ions hardly depressed the flotation of ga lena and could promote the flotation of galena to some *** study deepened the understanding of the depression mechanism o sulfite ions on sphalerite and Pb^(2+)activated sphalerite.

关键词： sphalerite galena sulfite ion density functional theory depression mechanism

Recent progress in constructing fluorinated solid-electrolyte interphases for stable lithium metal anodes

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 270-291页

作者： Di zhang Pengfei Lv wei Qin Xin He Yuanhua He Civil Aircraft Fire Science and Safety Engineering Key Laboratory of Sichuan Province College of Civil Aviation Safety EngineeringCivil Aviation Flight University of ChinaGuanghan 618307China School of Chemical Engineering Sichuan UniversityChengdu 610065China

Lithium metal batteries(LMBs)are emerging as a promising energy storage solution owing to their high energy density and specific ***,the non-uniform plating of lithium and the potential rupture of the solid-electrolyte interphase(SEI)during extended cycling use may result in dendrite growth,which can penetrate the separator and pose significant short-circuit *** a stable SEI is essential for the long-term operation of the ***-rich SEI has garnered significant attention for its ability to effectively passivate electrodes,regulate lithium deposition,and inhibit electrolyte *** the structural components and preparation methods of existing fluorinated SEI is crucial for optimizing lithium metal anode *** paper reviews the research on optimizing LiF passivation interfaces to protect lithium metal *** focuses on four types of compositions in fluorinated SEI that work synergistically to enhance SEI *** instance,combining compounds with LiF can further enhance the mechanical strength and ionic conductivity of the *** metals with LiF significantly improves electrochemical performance at the SEI/anode interface,with a necessary focus on reducing electron tunneling ***,incorporating polymers with LiF offers balanced improvements in interfacial toughness and ionic conductivity,though maintaining structural stability over long cycles remains a critical area for future *** alloys combined with LiF increase surface energy and lithium affinity,challenges such as dendrite growth and volume expansion *** summary,this paper emphasizes the crucial role of interfacial structures in LMBs and offers comprehensive guidance for future design and development efforts in battery technology.

关键词： LiF lithium metal anodes solid-electrolyte interphase interface cycling stability

From waste to wealth:Coal tar residue derived carbon materials as low-cost anodes for potassium-ion batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 464-475页

作者： Zhonghua Lu Jun Shen Xin zhang Lingcong Chao Liang Chen Ding zhang Tao wei Shoudong Xu College of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China College of Chemistry Taiyuan University of TechnologyTaiyuan 030024China School of Chemical Engineering and Pharmacy Wuhan Institute of TechnologyWuhan 430205China School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China

Carbon materials are widely recognized as highly promising electrode materials for various energy storage system *** tar residues(CTR),as a type of carbon-rich solid waste with high value-added utilization,are crucially important for the development of a more sustainable *** this study,we employed a straightforward direct carbonization method within the temperature range of 700-1000℃to convert the worthless solid waste CTR into economically valuable carbon materials as anodes for potassium-ion batteries(PIBs).The effect of carbonization temperature on the microstructure and the potassium ions storage properties of CTR-derived carbons(CTRCs)were systematically explored by structural and morphological characterization,alongside electrochemical performances *** on the co-regulation between the turbine layers,crystal structure,pore structure,functional groups,and electrical conductivity of CTR-derived carbon carbonized at 900℃(CTRC-900H),the electrode material with high reversible capacity of 265.6m Ah·g^(-1)at 50 m A·g^(-1),a desirable cycling stability with 93.8%capacity retention even after 100 cycles,and the remarkable rate performance for PIBs were ***,cyclic voltammetry(CV)at different scan rates and galvanostatic intermittent titration technique(GITT)have been employed to explore the potassium ions storage mechanism and electrochemical kinetics of *** indicate that the electrode behavior is predominantly governed by surface-induced capacitive processes,particularly under high current densities,with the potassium storage mechanism characterized by an“adsorption-weak intercalation”*** work highlights the potential of CTR-based carbon as a promising electrode material category suitable for high-performance PIBs electrodes,while also provides valuable insights into the new avenues for the high value-added utilization of CTR.

关键词： coal tar residue carbon materials anode potassium-ion batteries high value-added

Effects of ultrasonic treatment on microstructure and mechanical properties of Mg-6Zn-0.5Y-2Sn alloy

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Transactions of Nonferrous Metals Society of China 2016年第7期26卷 1826-1834页

作者：薛寒松邢志辉张维娜杨钢潘复生重庆大学材料科学与工程学院重庆400044 重庆大学国家镁合金材料工程技术研究中心重庆400044

The effects of the ultrasonic treatment on the microstructure and mechanical properties of Mg-6Zn-0.5Y-2Sn alloy were investigated. The results show that the ultrasonic treatment has significant effect on the microstructure and mechanical properties of Mg-6Zn-0.5Y-2Sn alloy. The phases in Mg-6Zn-0.5Y-2Sn alloy are α-Mg, MgZn2, MgSnY, Mg2Sn, and a small amount of I-phase. With the application of ultrasonic treatment, I-phase nearly disappears, and with increasing the ultrasonic treatment power, the coarse dendrites gradually change into roundish equiaxed grains. The second phases at the α-Mg boundaries transform from coarse, semicontinuous and non-uniform to fine, discontinuous, uniform and dispersive. When the ultrasonic treatment power is 700 W, the best comprehensive mechanical properties of Mg-6Zn-0.5Y-2Sn alloy are obtained. Compared with the untreated alloy, the 0.2%tensile yield strength, ultimate tensile strength and elongation are improved by 28%, 30%and 67%, respectively.

关键词： Mg-6Zn-0.5Y-2Sn alloy ultrasonic treatment microstructure mechanical properties