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Chinese Journal of Chemistry 2014年第8期32卷 788-796页

作者： Zhengxu Cai Zitong Liu Hewei luo Penglin Qi Guanxin Zhang Deqing Zhang 不详 Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

In this paper,we report the design,synthesis and semiconducting behavior of two conjugated D-A polymers BPDDTE and BPDBDTE which entail BPD,a Pechmann dye framework,as electron accepting moieties and(E)-1,2-di(thiophen-2-yl)ethane with and without alkyl chains as electron donating *** both show very narrow bandgaps below 1.3 *** on the characterization of the field-effect transistors,thin film of BPDDT exhibits ambipolar semiconducting properties with hole and electron mobilities reaching 0.245 and 0.095 cm^(2)•V^(−1)•s^(−1),respectively,after thermal ***,BPDBDTE with more alkylchains shows ambipolar semiconducting behavior with hole mobility and electron mobilities reaching 0.109 and 0.081 cm^(2)•V^(−1)•s^(−1).Furthermore,BPDBDTE shows good solubilities in several common organic solvents and thus is easily ***,BPDBDTE is potentially processible with inkjet printing and roll-to-roll printing techniques.

关键词： Pechmann dye conjugated polymer field-effect transistor ambipolar behavior

Effect of nozzle inlet parameters on the dry granulation atomization process of Si_(3)N_(4) ceramic bearing balls

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International Journal of Modeling, Simulation, and Scientific Computing 2021年第6期12卷 182-205页

作者： Dongling Yu Xiaohui Zhang Hongbin luo Dahai Liao Nanxing Wu School of Mechanical and Electronic Engineering Jingdezhen Ceramic Institute Jingdezhen 333403 P.R.China

In this paper,the atomization characteristics of Si3N4 ceramic dry granulation affect the performance of Si3N4 ceramic bearing *** order to improve the dry granulation characteristics and the comprehensive performance of Si3N4 ceramic bearing balls,the atomization mechanism of the spinning nozzle used for Si3N4 dry granulation was studied in *** interaction between air and binder in the pressure-swirl nozzle is analyzed based on VOF method,the modified realizable k−εturbulence model is used to simulate the flow field inside and outside the pressure-swirl nozzle,the effects of nozzle inlet parameters including the number of tangential inlets and the deflection angle of tangential inlets on the binder volume fraction,velocity distribution and pressure distribution are *** results show that when the number of tangential inlets increases from 1 to 4,the swirl strength of gas–liquid two-phase in the nozzle increases,the mean diameter of air core increases from 1.51 mm to 2.01 mm,and the spray cone angle increases from 18.5◦to 26.4◦.Besides,when the deflection angle of tangential inlet increases from 0◦to 15◦,the swirl strength of gas–liquid two-phase in the nozzle with the deflection angle of tangential inlet of 10◦is the largest,and the mean diameter of air core and spray cone angle is 3.04 mm and 30.7◦,*** on the atomization experiment platform of the electric control fuel system,the mean diameter of air core and spray cone angle are measured,the micromorphology of Si3N4 particles is observed,which verifies the correctness of numerical *** the Si3N4 particles are prepared by dry granulation,taking the atomization performance of nozzle into consideration,the pressure-swirl nozzle with 4 tangential inlets and 10◦deflection angle should be selected.

关键词： Si_(3)N_(4)ceramic bearing balls pressure-swirl nozzle VOF method inlet parameters air core spray cone angle

Age,Sex,and Disease-Specific Mortality Contributions to Life Expectancy in Urban and Rural China,1987–2021

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China CDC weekly 2024年第28期6卷 684-688,I0001页

作者： Zuliyaer Talifu Chen Chen Xinran Shen Panliang Zhong Yanan luo Binbin Su Department of Population Health and Aging Science School of Population Medicine and Public HealthChinese Academy of Medical Sciences/Peking Union Medical CollegeBeijingChina School of Population Medicine and Public Health Chinese Academy of Medical Sciences/Peking Union Medical CollegeBeijingChina Department of Global Health School of Public HealthPeking UniversityBeijing100191China

What is already known about this topic?Over the past several decades,China has experienced substantial improvements in life expectancy(LE),signifying major advancements in public health *** is added by this report?This study offers an in-depth analysis of the contributions made by various diseases and age demographics to the growth of LE in China over the past 35 years,highlighting crucial factors that influence population *** are the implications for public health practice?The results highlight the need for interventions tailored to various disease types and age groups in order to enhance LE and improve public health *** health strategies should prioritize disease prevention,control initiatives,and enhancements in healthcare services that are specifically designed to meet the needs of distinct population demographics.

关键词： Rural Urban prevention

CKGSE:A Prototype Search Engine for Chinese Knowledge Graphs

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Data Intelligence 2022年第1期4卷 41-65页

作者： Xiaxia Wang Tengteng Lin Weiqing luo Gong Cheng Yuzhong Qu State Key Laboratory for Novel Software Technology Nanjing UniversityNanjing 210023China

Nowadays,with increasing open knowledge graphs(KGs)being published on the Web,users depend on open data portals and search engines to find ***,existing systems provide search services and present results with only metadata while ignoring the contents of KGs,i.e.,*** brings difficulty for users’comprehension and relevance *** overcome the limitation of metadata,in this paper we propose a content-based search engine for open KGs named *** system provides keyword search,KG snippet generation,KG profiling and browsing,all based on KGs’detailed,informative contents rather than their brief,limited *** evaluate its usability,we implement a prototype with Chinese KGs crawled from Open *** and report some preliminary results and findings.

关键词： Knowledge graph Search engine Snippet generation Dataset profiling Browsing

The effect of 8-OH-DPAT and dapoxetine on gene expression in the brain of male rats during ejaculation

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Acta Pharmaceutica Sinica B 2017年第3期7卷 381-389页

作者： Xijun Qin Xiaojun Ma Dongping Tu Zuliang luo Jie Huang Changming Mo Institute of Medicinal Plant Development Chinese Academy of Medical SciencesPeking Union Medical CollegeBeijing 100193China Guangxi University of Chinese Medicine Nanning 530200China Guangxi Branch of Institute of Medicinal Plant Development Chinese Academy of Medical ScienceNanning 530023China

The 5-HT_(1A) receptor agonist 8-hydroxy-2-[di-n-propylamino] tetralin(8-OH-DPAT) promotes ejaculation of male rats, whereas dapoxetine delays this process. However, the gene expression profile of the brain at ejaculation following administrationof these two compounds has not been fully elucidated. In the present study, a transcriptomic Body Map was generated by conducting mRNA-Seq on brain samples of male Sprague–Dawley rats. The study included four groups: pre-copulatory control(CK) group,ejaculation(EJ) group, 0.5 mg/kg 8-OH-DPAT-ejaculation group(DPAT), and 60 mg/kg dapoxetineejaculation(DAP) group. The resulting analysis generated an average of approximately 47 million sequence reads. Significant differences in the gene expression profiles of the aforementioned groups were observed in the EJ(257 genes), DPAT(349 genes) and the DAP(207 genes) compared with the control rats. The results indicate that the expression of Drd1 and Slc6a3 was significantly different after treatment with 8-OH-DPAT, whereas the expression of Drd4 was significantly different after treatment with dapoxetine. Other genes, such as Wnt9b, Cdkn1 a and Fosb, exhibited significant differences in expression after the two treatments and are related to bladder cancer, renal cell carcinoma and sexual addiction. The present study reveals the basic pattern of gene expression that was activated at ejaculation in the presence of 8-OH-DPAT or dapoxetine, providing preliminary gene expression information during rat ejaculation.

关键词： 8-OH-DPAT Dapoxetine Brain Gene expression Ejaculation Male rats

Effect of Quark Strong Interaction in Phase Transition on Supernova Explosion

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Communications in Theoretical Physics 2008年第6期49卷 1643-1648页

作者： LAI Xiang-Jun luo Zhi-Quan LIU Jing-Jing LIU Hong-Lin Institute of Theoretical Physics China West Normal University Nanchong 637002 China

The effect of quark interactions perturbatively to order αc on the conversion, from quark matter to strange quark matter, is studied systematically based on a recent set of current quark masses. The process has a significant effect on increasing the core temperature, the neutrino abundance and the neutrino energies even if there is no quark interaction. Furthermore, with the switch of the strong interaction among quarks, these quantities will increase respectively to some further extents with αc increase. Taking αc = 0.47 as an example, the temperature, the neutrino abundance and the total neutrino energies are further raised by about 10%, 7%, and 20% respectively, which is weakly dependent on the initial temperature. Combining the effect of the current quark mass and the effect of the quark strong interaction, the results of the conversions will greatly enhance the probability of success for a supernova explosion and deeply influence the dynamics of the supernova evolution.

关键词： supernova phase transitions quark interactions

Characteristics of Ionospheric North-South Asymmetry and Their Relationship with Irregularity

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Wuhan University Journal of Natural Sciences 2015年第3期20卷 240-246页

作者： luo Weihua ZHU Zhengping LAN Jiaping LI Xuejing College of the Electronic Information and Engineering South-Central University for Nationalities Electronic Information School Wuhan University

Using the empirical ionospheric model, the flux-tube integrated electron density and the ratio between the F-region Pedersen conductivity and the total E- and F-region Pedersen conductivity are calculated to investigate the characteristics of the ionospheric asymmetry after sunset during a solar cycle. Furthermore, two indices representing the asymmetric strength of the parameters respectively are defined to study its relationship with the occurrences of the irregularities during different seasons and with different solar activities. The results indicate that the electron density and the Pedersen conductivity ratio show north-south remarkable hemispheric asymmetry at different solar energy levels. The asymmetric strengths represent the dependence on seasons and solar activities, and their variation depending on seasons and solar activities show a negative correlation with the occurrences of the equatorial irregularities and also have a negative relation with the linear growth rate of the generalized Rayleigh-Taylor instability.

关键词： ionosphere asymmetry electron density Pedersen conductivity irregularity

Number, distribution, and predicted needed number of general practitioners in China

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Family Medicine and Community Health 2018年第3期6卷 154-159页

作者： Baoling Wu Hanxiang Gong Zhenni luo School of Health Services Management Guangzhou Medical UniversityGuangzhou 511436China

Family Medicine and Community Health 2018;6(3):154–159154 *** DOI 10.15212/FMCH.2018.0120.2018 Family Medicine and Community *** Commons Attribution-NonCommercial 4.0 International License CHINA FOCUS CHINA FOCUS Number,distribution,and predicted needed number of general practitioners in China*Baoling Wu1,Hanxiang Gong1,Zhenni luo1 Abstract Objective:We aimed to investigate the number and distribution of general practitioners(GPs)in China,and to predict the number of GPs needed in the ***:From China Health Statistics Yearbook 2014,China Health Statistics Yearbook 2016 and China Statistical Yearbook 2016,we obtained the number of GPs and the populations in China and each of its regions from 2012 to *** SPSS Statistics version 22.0 was used to conduct descriptive statistical *** model GM(1,1)and the manpower-to-population ratio method were used to predict the number of GPs needed in China from 2016 to ***:The total number of GPs in China was 109,794 in 2012,145,511 in 2013,172,597 in 2014,and 188,649 in *** number increased by 78,855 from 2012 to 2015,and the average annual growth rate was 19.77%.By the end of 2015,of the GPs in all of China and in eastern,central,and western China,those who had achieved a GP qualification certificate following training accounted for 63.76%(120,285/188,649),60.06%(62,474/104,015),65.20%(29,565/45,344),and 71.89%(28,246/39,290),respectively,of the *** number of GPs per 10,000 population in all of China and in eastern,central,and western China was 1.37,1.83,1.05,and 1.06,respectively,and the number of GPs needed for all of China and the eastern,central,and western parts would be 86,275,9787,40,764,and 34,976,respectively,calculated on the basis of the standard of two GPs per 10,000 *** model GM(1,1)predicted that,in accordance with the natural growth trend of GPs,the number of GPs in China would be 220,314 in 2016,253,728 in 2017,293,101 in 2018,339,9

关键词： General practitioners number distribution forecast

Evaluation of spectral domain optical coherence tomography parameters in discriminating preperimetric glaucoma from high myopia

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International Journal of Ophthalmology(English edition) 2019年第1期12卷 58-65页

作者： Xiao-Yu Xu Hui Xiao Jing-Yi luo Xing Liu State Key Laboratory of Ophthalmology Zhongshan Ophthalmic CenterSun Yat-sen University

AIM: To evaluate the diagnostic ability of macular ganglion cell-inner plexiform layer(GCIPL) thickness o b t a i n e d b y s p e c t r a l-d o m a i n o p t i c a l c o h e r e n c e tomography(SD-OCT) in discriminating non-highly myopic eyes with preperimetric glaucoma(PPG) from highly myopic healthy eyes. METHODS: A total of 254 eyes, including 76 normal controls(NC), 116 eyes with high myopia(HM) and 62 non-highly myopic eyes with PPG were enrolled. The diagnostic ability of OCT parameters was accessed by the areas under the receiver operating characteristic(AUROC) curve in two distinguishing groups: PPG eyes with nonglaucomatous eyes including NC and HM(Group 1), and PPG eyes with HM eyes(Group 2). Differences in diagnostic performance between GCIPL and RNFL parameters were evaluated. RESULTS: The minimum(AUROC curve of 0.782), inferotemporal(0.758) and inferior(0.705) GCIPL thickness were the top three GCIPL parameters in discriminating PPG from non-glaucomatous eyes, all of which had statistically significant lower diagnostic ability than average RNFL thickness(0.847). In discriminating PPG from HM, the best GCIPL parameter was minimum(0.689), statistically significant lower in diagnostic ability than average RNFL thickness(0.789) and three other RNFL thickness parameters of temporal and inferotemporal clock-hour sectors. CONCLUSION: The minimum GCIPL thickness is the best GCIPL parameter to detect non-highly myopic PPG from highly myopic eyes, whose diagnostic ability is inferiorto that of average RNFL thickness and RNFL thickness of several temporal and inferotemporal clock-hour sectors. The average RNFL thickness is recommended for discriminating PPG from highly myopic healthy eyes in current clinical practice in a Chinese population.

关键词： ganglion cell-inner plexiform layer diagnostic ability preperimetric glaucoma high myopia.

Facet effects on bimetallic ZnSn hydroxide microcrystals for selective electrochemical CO_(2)reduction

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Green Energy & Environment 2024年第8期9卷 1314-1320页

作者： Liu Han Cheng-wei Wang Shan-shan luo Ying-tang Zhou Bing Li Ming Liu School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHeilongjiang Province150000China National Engineering Research Center for Marine Aquaculture Marine Science and Technology CollegeZhejiang Ocean UniversityZhoushanZhejiang Province316004China

Employing crystal facets to regulate the catalytic properties in electrocatalytic carbon dioxide reduction reaction(eCO_(2)RR)has been well demonstrated on electrocatalysts containing single metals but rarely explored for bimetallic ***,we synthesize ZnSn(OH)_(6)(ZSO)microcrystals(MCs)with distinct facets and investigate the facet effects in eCO_(2)*** studies and in situ Fourier Transform Infrared Spectroscopy(in situ-FTIR)reveal that ZSO MCs produce mainly C1 products of HCOOH and ***{111}facet of the ZSO MCS exhibits higher selectivity and faradaic efficiency(FE)than that of the{100}facet over a wide range of potentials(-0.9 V∼-1.3 V versus RHE).Density Functional Theory(DFT)calculations elucidate that the{111}facet is favorable to the adsorption/activation of CO_(2)molecules,the formation of intermediate in the rate-determining step,and the desorption of C1 products of CO and HCOOH molecules.

关键词： ZnSn(OH)_(6) Crystal facets Electrochemical carbon dioxide reduction C1 product Density functional theory