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Synergistic impact of cocatalysts and hole scavenger for promoted photocatalytic H2 evolution in mesoporous TiO2–NiSx hybrid

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Journal of Energy Chemistry 2019年第5期28卷 45-56页

作者： Yi Wei gang Cheng jinyan xiong Jiaxin Zhu Yixin Gan Mengmeng Zhang Zhen Li Shixue Dou School of Chemistry and Environmental Engineering Wuhan Institute of TechnologyWuhan 430073HubeiChina College of Chemistry and Chemical Engineering Wuhan Textile UniversityWuhan 430200HubeiChina School of Radiation Medicine and Radiation Protection Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123JiangsuChina Institute for Superconducting and Electronic Materials University of Wollongong.North Wollongong NSW2500Australia

Photocatalytic solar energy conversion to hydrogen is sustainable and attractive for addressing the global energy and environmental issue. Herein, a novel photocatalytic system (NiS/Ni3S4 cocatalysts modified mesoporous TiO2) with superior photocatalytic hydrogen evolution capability through the synergistic impact of NiS/Ni3S4 (NiSx) cocatalyst and efficient hole scavenger has been demonstrated. The photocatalytic hydrogen evolution of TiO2-NiSx hybrids with the different content of NiSx and upon different organic hole scavengers was both investigated. The hybrid of TiO2 decorated with 3%(mole ratio of Ni^2+) NiSx cocatalyst in methanol solution showed the optimal photocatalytic hydrogen evolution rate of 981.59 μmol h^-1 g^-1 which was about 20 times higher than that of bare mesoporous TiO2. Our results suggested that the boosted hydrogen production performance is attributed to both the improved photoinduced electrons migration between NiS and Ni3S4 in cocatalyst and the high hole captured efficiency by hole scavengers of methanol.

关键词： NiS/Ni3S4 Cocatalyst Photocatalytic hydrogen evolution Mesoporous TiO2 Hole scavenger

Highly selective electrocatalytic Cl− oxidation reaction by oxygen-modified cobalt nanoparticles immobilized carbon nanofibers for coupling with brine water remediation and H2 production

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Nano Research 2021年第5期14卷 1443-1449页

作者： Qizhong xiong Xian Zhang Qipeng Cheng Guoqiang Liu gang Xu Junli Li Xinxin Ye Hongjian Gao Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention School of Resources and EnvironmentAnhui Agricultural UniversityHefei230036China Key Laboratory of Materials Physics Centre for Environmental and Energy NanomaterialsAnhui Key Laboratory of Nanomaterials and NanotechnologyCAS Center for Excellence in NanoscienceInstitute of Solid State PhysicsChinese Academy of SciencesHefei230031China School of Materials Science and Engineering Hefei University of TechnologyHefei230009China

Combining the H2 production with brine remediation is regarded as a sustainable approach to achieving clean H2 energy. However, designing stable Cl− oxidation reaction (COR) electrocatalyst is the key to realize this route. Herein, a type of oxygen-modified Co nanoparticles anchored graphitic carbon nanofibers catalyst (Co/GCFs) was synthesized through a two-step strategy of adsorption and pyrolysis. The Co/GCFs-2.4 exhibits high selectivity and stability for COR at neutral electrolyte. It is worth noting that unlike the water oxidation, the chemical valence of cobalt has not changed during the COR. Further results demonstrated that the oxygen-modified Co nanoparticles provide active sites for selective COR, meanwhile, the graphitic carbon gives rise to strong catalytic stability. Thanks to the superior COR and H2 production activity of Co/GCFs-2.4, a two-electrode brine electrocatalysis system employing Co/GCFs-2.4 as both cathode and anode for H2 production exhibited robust stability, efficient and high Faraday efficiency (98%-100%). We propose that this work provides a novel strategy for designing efficient and stable catalysts with electrocatalytic COR and HER activities at neutral brine water for practically coupling with H2 production by water electrolysis and brine water remediation.

关键词： carbon nanofibers oxygen-modified cobalt nanoparticles brine water Cl−oxidation reaction electrocatalytic H2 production

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中国小型鲸类保护声学研究历程和新思考

水生生物学报 2025年第1期49卷 99-108页

作者：王克雄李松海郑劲松郝玉江梅志刚王丁中国科学院水生生物研究所水生哺乳动物创新研究中心武汉430072 中国科学院深海科学与工程研究所三亚572000

保护声学(Conservation acoustics)是基于物种及生态环境保护需求而发展出的声学分支,重点研究与保护相关的声学理论、技术及应用,涉及保护生物学、生物声学和生态声学等关联学科。研究小型鲸类发声和受声及栖息地声学特征,有助于了解... 详细信息

保护声学(Conservation acoustics)是基于物种及生态环境保护需求而发展出的声学分支,重点研究与保护相关的声学理论、技术及应用,涉及保护生物学、生物声学和生态声学等关联学科。研究小型鲸类发声和受声及栖息地声学特征,有助于了解种群生存状况,制订和实施基于声学的保护对策,促进物种和生态环境保护。我国小型鲸类保护声学源起于20世纪80年代白鱀豚(Lipotes vexillifer)的保护需求, 1990年代后期和2000年代中后期逐渐转向到长江江豚(Neophocena asiaeorientalis a.)和中华白海豚(Sousa chinensis),近10多年来覆盖了从南海到黄渤海水域多种小型鲸类,在国际上占有较高的地位。40多年来,随着声学技术和仪器的发展,以及淡水和海洋小型鲸类保护的迫切需求,保护声学研究从人工环境中的个体转向到野外群体,声信号的记录方式从单一水听器转向全自动水听器阵列,研究内容从声信号和听觉特征扩展到广域长时被动声学监测,以及水下声景和水下噪声影响及防范,初步实现了基础研究和技术研发为小型鲸类保护提供支撑。可以预期,在未来10多年我国小型鲸类保护声学理论、技术研发及保护应用,将会随着大数据科学、人工智能技术和声学的发展与融合而呈现较明显的提升。

关键词：小型鲸类生物声学保护声学白鱀豚长江江豚中华白海豚

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Metabolic and proteostatic differences in quiescent and active neural stem cells

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Neural Regeneration Research 2024年第1期19卷 43-48页

作者： Jiacheng Yu gang Chen Hua Zhu Yi Zhong Zhenxing Yang Zhihong Jian Xiaoxing xiong Department of Neurosurgery Renmin Hospital of Wuhan UniversityWuhanHubei ProvinceChina

Adult neural stem cells are neurogenesis progenitor cells that play an important role in ***,neural regeneration may be a promising target for treatment of many neurological *** regenerative capacity of adult neural stem cells can be chara cterized by two states:quiescent and *** adult neural stem cells are more stable and guarantee the quantity and quality of the adult neural stem cell *** adult neural stem cells are chara cterized by rapid proliferation and differentiation into neurons which allow for integration into neural *** review focuses on diffe rences between quiescent and active adult neural stem cells in nutrition metabolism and protein ***,we discuss the physiological significance and underlying advantages of these diffe *** to the limited number of adult neural stem cells studies,we refe rred to studies of embryonic adult neural stem cells or non-mammalian adult neural stem cells to evaluate specific mechanisms.

关键词： adult neurogenesis cell metabolic pathway cellular proliferation neural stem cell niches neural stem cells neuronal differentiation nutrient sensing pathway proteostasis

Effects of stocking density on growth performance, blood parameters and immunity of growing pigs

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Animal Nutrition 2020年第4期6卷 529-534页

作者： Xue Li Xia xiong Xin Wu gang Liu Kai Zhou Yulong Yin Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central Ministry of AgricultureHunan Provincial Engineering Research Center of Healthy LivestockKey Laboratory of Agro-ecological Processes in Subtropical RegionInstitute of Subtropical AgricultureChinese Academy of SciencesChangshaHunan410125China University of Chinese Academy of Science Beijing100049China Key Laboratory of Adaptation and Evolution of Plateau Biota Qinghai Key Laboratory of Animal Ecological GenomicsLaboratory of Plateau Fish Evolutionary and Functional GenomicsNorthwest Institute of Plateau BiologyChinese Academy of SciencesXining810001China

This study was conducted to evaluate the effects of different stocking densities on growth performance,blood parameters,intestinal morphology and intestinal immunity of growing pigs.A total of288 male pigs(44.35±0.50 kg)were randomly assigned to groups with stocking densities of 2.46,1.23 and 0.82 m2/pig for a *** results showed that there was no significant difference on growth performance among *** in the stocking density of 0.82 m2/pig had the lowest backfat thickness and spleen weight index among groups(P<0.05).With increasing stocking density,the serum concentrations of blood urea nitrogen(BUN),transglutaminase(TGG),alkaline phosphatase(AKP)and immunoglobulin A(Ig A)were increased,and albumin(ALB),albumin-to-globulin ratio(ALB:GLO),insulin-like growth factor-1(IGF-1)and immunoglobulin(Ig M)were decreased(P<0.05),and cortisol tended to increase and glucose tended to decrease(0.05

关键词： Stocking density Growth performance Blood parameter Intestinal morphology Growing pig

One-dimensional consolidation of visco-elastic aquitard due to withdrawal of deep-groundwater

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Journal of Central South University 2012年第1期19卷 282-286页

作者： LIU Jia-cai LEI Guo-gang MEI Guo-xiong College of Transportation Science and Engineering Nanjing University of TechnologyNanjing 210009China Nanjing Water Conservancy Construction Corporation Nanjing 210036China

One-dimensional consolidation of visco-elastic aquitard due to withdrawal of deep-groundwater was *** model was used to simulate visco-elastic characteristic of *** solutions of the governing equation were obtained by applying Laplace transform with respect to time,and then the pore-pressure,strain and deformation of the aquitard could be calculated by Laplace inversion.A case was analyzed to validate the correctness of the present ***,some consolidation properties of the problem were *** of the average degree of consolidation defined by pore pressure with that defined by settlement shows that they are different and the maximum difference is 22.8%.The influences of parameters of Merchant model and the rate of the water level on the consolidation are *** smaller the viscosity coefficient is,the later the rate of consolidation *** rate of consolidation is decreased with the decrease of the rate of the water level ***,the lagged effect of land subsidence should be considered in the actual project.

关键词： consolidation withdrawal of deep-groundwater visco-elastic characteristic Laplace inversion

Aliphatic biomarker signatures of early Oligocene-early Miocene source rocks in the central Qiongdongnan Basin:Source analyses of organic matter

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Acta Oceanologica Sinica 2023年第3期42卷 1-18页

作者： Min Xu Dujie Hou xiong Cheng Jun Gan Xinde Xu gang Liang Wenjing Ding School of Energy Resources China University of GeosciencesBeijing 100083China Key Laboratory of Marine Reservoir Evolution and Hydrocarbon Accumulation Mechanism Ministry of EducationBeijing 100083China Beijing Key Laboratory of Unconventional Natural Gas Geological Evaluation and Development Engineering Beijing 100083China Exploration and Development Resource Institute Hainan Branch of China National Offshore Oil CorporationHainan 570300China China National Offshore Oil Corporation(CNOOC)Research Institute Co. Ltd.Beijing 100028China

The geochemical signatures of fifty-four rock samples and three supplementary drill stem test(DST)oils from the Yacheng-Sanya formations in the central Qiongdongnan Basin(CQB)were *** of the early Oligocene-early Miocene(36–16 Ma)palaeovegetation and source analyses of organic matter(OM)were conducted using aliphatic biomarkers in ancient sediments and DST *** the interpreted aquatic and terrigenous OM contributed to the CQB source rocks(SRs)but had varying relative *** four distribution patterns derived from n-alkanes,terpanes,and steranes are representative of four OM composition models of the Yacheng-Sanya SRs,including model A,model B,model C,and model D,which were classified based on the increasing contribution from terrigenous OM relative to aquatic *** terrigenous higher plantderived biomarkers,including oleanane,des-A-oleanane,C_(29)ααα20R sterane,bicadinanes,the C_(19)/(C_(19)+C_(23))tricyclic terpane ratio,and other n-alkane-derived ratios suggest that angiosperms had increased proportions in the palaeoflora from early Oligocene to early Miocene,and the bloom of terrigenous higher plants was observed during deposition of upper Lingshui Formation to lower Sanya *** findings are consistent with the incremental total organic carbon and free hydrocarbons+potential hydrocarbons(S_1+S_2)in the lower Lingshuilower Sanya strata with a significant enrichment of OM in the E_3l_1-N_1s_2 *** maturity-and environmentsensitive aliphatic parameters of the CQB SRs and DST oils suggest that all the samples have predominantly reached their early oil-generation windows but have not exceeded the peak oil windows,except for some immature Sanya Formation *** addition,most of the OM in the analysed samples was characterised by mixed OM contributions under anoxic to sub-anoxic ***,terrestrial-dominant SRs were interpreted to have developed mainly in the Lingshui-Sanya formations and were deposit

关键词： aliphatic biomarkers early Oligocene-early Miocene organic matter sources palaeovegetation reconstruction Qiongdongnan Basin

The role of tumor size,ultrasonographic findings,and serum tumor markers in predicting the likelihood of malignant testicular histology

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Asian Journal of Andrology 2019年第2期21卷 196-200页

作者： gang Song Geng-Yan xiong Yu Fan Cong Huang Yong-Ming Kang Guang-Jie Ji jin-Chao Chen Zhong-Cheng Xin Li-Qun Zhou Department of Urology Peking University First HospitalBeijing 100034China Institute of Urology Peking UniversityNational Urological Cancer CenterBeijing 100034China Department of Urology Suining Central HospitalSuining 629000China Department of Andrology Peking University First HospitalBeijing 1CX3034China

The clin ical predictive factors for maligna nt testicular histology remain unclear because of the low prevale ***,the aim of this study was to investigate predictors of malignant histology for testicular masses and decide more testis-sparing surgeries before *** retrospective study enrolled 325 consecutive testicular mass patients who underwent radical orchiectomy(310/325)or testicular preserving surgery(15/325)from January 2001 to June *** clinicopathological factors,including tumor diameter,cryptorchidism history,ultraso und fin dings,serum alpha-fetoprotein,and human chorio nic gonadotropin(HCG)levels,were collected retrospectively for statistical an alysis.A predictive no mogram was also gen erated to evaluate the qua ntitative *** all patients,247(76.0%)were diagnosed with a malignant testicular tumor and 78(24.0%)with benign *** tumor diameter(percm increased,hazard ratio[HR]=1.284,P=0.036),lower ultrasound echo(HR=3.191,P=0.001),higher ultrasound blood flow(HR=3.320,P<0.001),and abnormal blood HCG(HR=10.550,P<0.001)were significant predictive factors for malignant disease in all testicular mass patients?The nomogram generated was well calibrated for all predicti ons of malig nant probability,and the accuracy of the model no mogram measured by HarrelTs C statistic(C-in dex)was *** to our data,the proportion of patients who underwent radical orchiectomy for benign tumors(24.0%)was much larger tha n gen erally believed(10.0%).Our results in dicated that the diameter,ultras onic echo,ultras onic blood flow,and serum HCG levels could predict the malignancy in testicular mass patients.

关键词： malignant likelihood predictive model testicular tumor urological oncology

Study on structural and compositional transitions of coal ash by using NMR

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Journal of Coal Science & Engineering(China) 2012年第1期18卷 80-87页

作者： xiong-chao Lin Keiko Ideta jin Miyawaki Hiromichi Takebe Yong-gang Wang Seong-Ho Yoon Isao Mochida Interdisciplinary Graduate School of Engineering Sciences Kyushu University Fukuoka Japan Institute for Materials Chemistry and Engineering Kyushu University Fukuoka Japan Graduate School of Science and Engineering Ehime University Matsuyam Japan School of Chemical & Environmental Engineering China University of Mining and Technology (Beijing) Beijing China

Structural and compositional transitions of Datong coal ash and its CaCO3 additional effects were carefully exam- ined at a temperature range of 300 to 1 600℃ by using XRD and solid state NMR. The quantitative estimation of amorphous structures of ashes can be successfully obtained through the analyses of solid state NMR spectra. Viscosity of molten ash and its changes with CaCO3 addition were also evaluated up to 1 700 ℃ by using a rotary type viscometer. Glasses with poor crystalline and amorphous phase were continuously formed through the eutectic reaction of silica above fusing temperature （FT〉1 500 ℃） that caused broadening and shift of 29Si and 27A1 peaks in NMR results. With the additional amount of CaCO3 increasing, the peaks shifted to downfield obviously; the fraction of Si（OA1）0（OSi）4 decreased, while that of Si（OA1）l（OSi）l at 84.3 x 10-6 increased apparently. These transitions indicated the destruction of large alumina-silicate framework into small segments by the addition of Ca ion.

关键词： coal gasification coal ash viscosity solid state NMR