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Theoretical study of novel B–C–O compounds with non-diamond isoelectronic

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Chinese Physics B 2022年第2期31卷 522-533页

作者： Chao Liu pan ying College of Rare Earths Faculty of Materials Metallurgy and ChemistryJiangxi University of Science and TechnologyGanzhou 341000China State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004China Hebei Key Laboratory of Microstructural Material Physics School of ScienceYanshan UniversityQinhuangdao 066004China

Two novel non-isoelectronic with diamond(non-IED)B–C–O phases(tI16-B_(8)C_(6)O_(2)and mP16-B_(8)C_(5)O_(3))have been *** research of the phonon scattering spectra and the independent elastic constants under ambient pressure(AP)and high pressure(HP)proves the stability of these non-IED B–C–O *** to the common compounds,the research of the formation enthalpies and the relationship with pressure of all non-IED B–C–O phases suggests that HP technology performed in the diamond anvil cell(DAC)or large volume press(LVP)is an important technology for *** tI16-B_(8)C_(6)O_(2)and tI12-B_(6)C_(4)O_(2)possess electrical ***16-B_(8)C_(5)O_(3)is a small bandgap semiconductor with a 0.530 eV *** aP13-B_(6)C_(2)O_(5),mC20-B_(2)CO_(2)and tI18-B_(4)CO_(4)are all large gap semiconductors with gaps of 5.643 eV,6.113 eV,and 7.105 eV,*** study on the relationship between band gap values and pressure of these six non-IED B–C–O phases states that tI16-B_(8)C_(6)O_(2)and tI12-B_(6)C_(4)O_(2)maintain electrical conductivity,mC20-B_(2)CO_(2)and tI18-B_(4)CO_(4)have good bandgap stability and are less affected by *** stress-strain simulation reveals that the max strain and stress of 0.4 GPa and 141.9 GPa respectively,can be sustained by tI16-B_(8)C_(6)O_(2).Studies on their mechanical properties shows that they all possess elasticity moduli and hard *** pressure has an obvious effect on their mechanical properties,therein toughness of tI12-B_(6)C_(4)O_(2),aP13-B_(6)C_(2)O_(5),mC20-B_(2)CO_(2)and tI18-B4CO4 all increases,and hardness of mP16-B_(8)C_(5)O_(3)continue to strengthen during the *** abundant hardness characteristics and tunable band gaps,extensive attention will be focused on the scientific research of non-IED B–C–O compounds.

关键词： stability analysis pressure formation enthalpy property

Dynamic model of multi-agent social evolutionary algorithm and its convergence

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The Journal of China Universities of Posts and Telecommunications 2013年第6期20卷 122-128页

作者： pan Xiao-ying CHEN Hao School of Computer Science & Technology Xi'an University of Posts & Telecommunications

With a typical and simple 2-bit problem, a dynamic model of multi-agent social evolutionary algorithm （MASEA） is constructed by dynamic method. Then, the global dynamic shape of MASEA is comprehensively analyzed and the common evolution operators are also formally described. Furthermore, the effect that every evolutionary operator has on the dynamic shape is discovered by attraction analysis of the fixed points in the models. The global convergence of MASEA is also proved.

关键词： multi-agent social evolutionary algorithm fixed point attractive point attractiveness

CONTROL STRATEGY FOR ELECTRO-HYDRAULIC POSITION SERVO SYSTEM WITH GENERALIZED PULSE CODE MODULATION

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Chinese Journal of Mechanical Engineering 2007年第3期20卷 50-53页

作者： LIU Rong pan Huachen CHEN ying Institute of Mechatronic Engineering Hangzhou Dianzi University Hangzhou 310018 China

A hybrid control strategy has been designed and developed for the electro-hydraulic posi-tion servo control system with generalized Pulse code modulation （GPCM）, which is suitable for the area where the work condition is poor and a large flow rate is required. It is difficult to control the GPCM system because the system is discrete. With consideration of the stability and speediness of the GPCM position servo control system, a control strategy is developed through the theoretical and ex-perimental analyses. The control strategy integrates the merits of Bang-Bang control, PID control and fuzzy control. With this hybrid control strategy, the electro hydraulic control system has good per-formances, and the servo control is carried out with GPCM through on-off valves.

关键词： Generalized pulse code modulation (GPCM) Position control Electro hydraulic control

Photocatalytic degradation of L- acid by TiO_2 supported on the activated carbon

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Journal of Environmental Sciences 2006年第3期18卷 562-566页

作者： WANG Yu-ping WANG Lian-jun PENG pan-ying School of Chemical Engineering Nanjing University of Science and Technology Nanjing 210094China School of Chemistry and Environmental Science Nanjing Normal University Nanjing 210097 China

TiO2 sol was prepared by sol-gel technique with tetrabutyl titanate as precursor. Supported TiO2 catalysts on activated carbon were prepared by soak and sintering method. The aggregation of nano-TiO2 particles can be effectively suppressed by added polyethylene glycol （PEG） as a surface modifier. The average particle diameter of TiO2, specific surface area and absorbability of catalyst can be modified. Based on characteristics of the TiO2 photocatalyst with XRD, specific surface area, adsorption valves of methylene blue and the amount of TiO2 supported on the activated carbon, the photocatalytic degradation of L-acid was studied. The effect of the factors, such as pH of the solution, the initial concentration of L-acid on the photocatalytic degradation of L-acid, were studied also. It was found that when the pH of the solution is 1.95, the amount of photocatalyst is 0.5 g, the concentration of the L-acid solution is 1.34×10^3 mol/L and the illumination time is 7 h, the photocatalytic degradation efficiency of L-acid can reach 89,88%, The catalyst was reused 6 times and its degradation efficiency hardly changed.

关键词： L-acid activated carbon supported TiO2 photodegradation

Carbon Budget Proposal:An Institutional Framework for an Equitable and Sustainable World Climate Regime

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Chinese Journal of Population,Resources and Environment 2011年第3期9卷 3-20页

作者： pan Jiahua Chen ying Research Centre for Sustainable Development Chinese Academy of Social Sciences Beijing 100732 China

Consensus on reducing greenhouse gas emissions has been reached at the technical and political ***,as the issue involves economic costs and the right to develop,the international institutional framework for addressing greenhouse gas emissions has consistently failed to balance the demands of impartiality and ***,a sustainable carbon budget proposal is undoubtedly achievable if the global carbon budget (the total amount of carbon permitted by climate security) is made an absolute *** a preliminary distribution was made among the world's population on a per capita basis,the total limited global carbon budget could not only meet basic needs but also ensure the proposal's *** into account historical emission levels and future needs,we should carry out carbon budget transfer payments and devise a corresponding funding mechanism to ensure efficient allocation under the *** the phase-by-phase progress and provisional goals of the Kyoto Protocol,the carbon budget proposal outlined above is a comprehensive and holistic *** to the politicization of the climate change issue,however,many technical issues can only be worked out through international political and diplomatic negotiations.

关键词： carbon budget equity sustainability international climate regime

Comprehensive Analysis of Differential Gene Expression Profile via RNA Sequencing in the Human Ovarian Cancer SKOV3 Cells Treated with Simvastatin

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Chemical Research in Chinese Universities 2022年第2期38卷 632-638页

作者： LIU Qianyu DU Zhenwu ZHU He ZHAO Tianyu pan ying Department of Gynecology and Obstetrics the China-Japan Union Hospital of Jilin UniversityChangchun 130033P.R.China Department of Orthopedics the Second Hospital of Jilin UniversityChangchun 130041P.R.China Research Centre the Second Hospital of Jilin UniversityChangchun 130041P.R.China Department of Gynecology and Obstetrics the Second Hospital of Jilin UniversityChangchun 130041P.R.China

The experimental studies have demonstrated that some statins have an anticancer effect against ovarian cancer in vitro and in vivo, however, the potential molecular mechanism is still unclear. In the present study, high throughput RNA sequencing(RNA-seq) technology was applied to exploring the mRNA changes treated with Simvastatin in the human ovarian cancer SKOV3 cell line. The result of CCK-8 assay shows that Simvastatin inhibits significantly SKOV3 cell viability in a concentration-dependent manner, and cell cycle according to the flow cytometry analysis result shows cell cycle arrest of G1 phase is induced in SKOV3 cells with 10 μg/mL simvastatin added for 24 h. The differential expression genes(DEGs) analysis of RNA-seq data shows that there are a total of 372 DEGs found in the Simvastatin group, of which 150 mRNAs are up-regulated and 222 mRNAs are down-regulated(fold change>2.0, q value < 0.05). Real time reverse transcription-polymerase chain reaction(qRT-PCR) experiment has validated that the expression of KLF2, RHOB and CIDEB is up-regulated while that of DKK1, AMOTL2 and ANKRD1 is down-regulated. The DEGs are enriched in thirteen significant KEGG pathways including cell cycle, DNA replication, apoptosis, etc. This study provides supported useful information about transcriptome profiles of SKOV3 cell treated with simvastatin, and offers an application basis for the further researches on the mechanism of Simvastatin in the treatment of ovarian cancer.

关键词： Simvastatin Ovarian cancer RNA sequencing Gene expression profile

Synthesis and Electrochemical Studies of Carbon-modified LiNiPO4 as the Cathode Material of Li-ion Batteries

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Chemical Research in Chinese Universities 2015年第1期31卷 117-122页

作者： ZHANG ying pan Yue LIU Jia WANG Guiling CAO Dianxue Key Laboratory of Superlight Material and Surface Technology of Ministry of Education College of Material Science and Chemical Engineering Harbin Engineering University Harbin 150001 P. R. China

Well-crystallized olivine LiNiPO4 and carbon-modified LiNiPO4（LiNiPO4/C） were synthesized by a combined solvothermal and solid state reaction method using water-benzyl alcohol two-phase solvent. The structure and morphology of the prepared LiNiPO4 were systematically characterized by powder X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The LiNiPO4 particles are up to around 2 μm in diameter while the particle size of LiNiPO4/C is about 100-200 nm. At a current rate of 0.05 C（1.00 C=167 mA/g, corresponding to one Li^＋｜ intercalation/deintercalation）, LiNiPO4 and LiNiPO4/C presented a high initial specific capacity of 157 and 220 mA.h/g, respectively. The capacity of LiNiPO4/C is 72% larger than that of LiNiPO4 at 0.1 C. The LiNiPO4/C cathode exhibits a superior electrochemical performance in comparison with LiNiPO4, revealing that carbon modifying is an effective method to improve the ionic diffusion and electronic conductivity of cathode material LiNiPO4. Furthermore, lithium ion diffusion coefficients of LiNiPO4 and LiNiPO4/C are 1.80× 10^-15 and 1.91×10^-14 cm^2/s, respectively, calculated via the data from electrochemical impedance spectra.

关键词： Lithium nickel phosphate Carbon-modifying Cathode material Lithium ion battery Lithium ion diffusion coefficient

Effect of Sorbents Added on Adsorption Capability of Soil for Nano-TiO_2

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Chemical Research in Chinese Universities 2009年第4期25卷 446-450页

作者： pan Shu-ying GAO Bao-yu YUE Qin-yan School of Environmental Science and Engineering Shandong University Jinan 250100 P. R. China

The adsorption capability of loam soil for nano-TiO2 affected by the amount and intensity of leached water has been investigated by simulating the natural rainfall process under the leaching *** results show that the amount and the intensity of leached water are two important factors affecting the adsorption capability of loam soil for *** results indicate that the depth of the loam soil containing a maximal amount of nano-TiO2 is proportional to the amount of leached water,while it is inversely proportional to the intensity of leached water,at a constant amount of the leached *** was also found that the adsorption capability of soils for nano-TiO2 can be improved by adding other materials,such as dissolved organic matter（DOM）,bentonite and *** was found that DOM is the best sorbent for improving the adsorption capability of loam soil for nano-TiO2,followed by bentonite,while straw is not suitable for the modification of loam *** improvement of adsorption capability of loam soil depends on the amount of these ***-TiO2 can be effectively adsorbed on the surface layer of loam soil containing an appropriate amount of additive.

关键词： Nano-TiO2 DOM Bentonite Adsorption Eluviations

A Preliminary Genetic Linkage Map of Sinonovacula constricta(Lamarck, 1818) Based on Microsatellites Derived from RAD Sequencing

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Journal of Ocean University of China 2018年第4期17卷 947-956页

作者： WU Xueping FENG Yanwei JIANG Hailin LIU Xiangquan pan ying Key Laboratory of Marine Ecological Restoration Shandong Marine Resource and Environment Research Institute College of Animal Science and Technology Guangxi University Key Laboratory of Protection and Utilization of Marine Resources Guangxi University of Nationalities

Sinonovacula constricta is one of the important economic aquaculture species in China. In this study, we constructed genetic linkage maps of S. constricta based on 300 microsatellite markers derived from RAD-seq using an F1 full-sib family. The female map contained 204 microsatellites assigned to 22 linkage groups, which covered 1529.5 cM with an average interval of 10.3 cM. The male consisted of 187 microsatellites in 19 linkage groups corresponding to the haploid chromosome number(n(28)19), which spanned 1429.3 cM with an average interval of 8.7 cM. The genome coverage was approximately 83.5% and 81.4%, respectively. An integrated map was constructed according to the common markers in parental linkage groups, which had a total length of 1683.8 cM with an average interval of 7.3 cM. The genome coverage of the integrated map was approximately 86.3%. The genetic linkage map would form the foundation for further studies on the quantitative trait loci(QTL), as well as accelerating the breeding process of this species.

关键词： linkage maps Sinonovacula constricta microsatellite marker RAD sequencing