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Universally improving effect of mixed electron donors on the CO_2 fixing efficiency of non-photosynthetic microbial communities from marine environments

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Journal of Environmental Sciences 2014年第8期26卷 1709-1716页

作者： Jiajun Hu Lei Wang Shiping Zhang Yuanqing Wang Fangming Jin xiaohua fu Huirong Li School of Environmental Science and Engineering State Key Laboratory of Pollution Control and Resource ReuseTongji University Low-Carbon Conversion Science and Engineering Center Shanghai Advanced Research InstituteChinese Academy of Sciences School of Environmental Science and Engineering Shanghai Jiao Tong University Polar Research Institute of China

The universality of improved CO2 fixing upon the addition of mixed electron donors（MEDs）composed of Na2 S,NO2-,and S2O32-to non-photosynthetic microbial communities（NPMCs）obtained from 12 locations in four oceans of the world was validated. The CO2 fixing efficiencies of NPMCs were universally enhanced by MED compared with those obtained using H2 alone as electron donor,with average increase of about 276%. An increase in microbial inoculation concentration could increase the net amount of CO2 fixing to853.34 mg/L in the presence of MED. NO2-and S2O32-may play the roles of both electron acceptor and electron donor under aerobic conditions,which may improve the energy utilization efficiency of NPMC and enhance the CO2 fixation efficiency. The sequence determination of 16 S ribosomal deoxyribonucleic acid（rDNA） from 150 bacteria of NPMC showed that more than 50% of the bacteria were symbiotic and there were many heterotrophic bacteria such as Vibrio natriegens. These results indicate that NPMC acts as a symbiotic CO2 fixing system. The interaction between autotrophic and heterotrophic bacteria may be a crucial factor supporting ladder utilization and recycling of energy/carbon source.

关键词： Non-photosynthetic microbial community Mixed electron donors CO2fixing Symbiotic bacteria Heterotrophic bacteria

Psychological problems affecting the prognosis of stroke patients

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Neural Regeneration Research 2007年第12期2卷 760-763页

作者： xiaohua fu Jia Sun Hong Wang Qingyang Song Department of Neurology Beijing Longfu Hospital Beijing 100010 China

BACKGROUND： It is believed that mental disorder influences the morbility and prognosis of cardio-cerebrovascular disease by biological factors. OBJECTIVE： To observe the characteristics of stroke patients complicated by psychological problems and the prognosis of such patients. DESIGN： Observational study. SETTING： Department of Neurology, Beijing Longfu Hospital. PARTICIPANTS： Totally 160 inpatients （46 males and 114 females） with stroke admitted to Department of Neurology, Beijing Longfu Hospital between June 2005 and June 2006 were recruited in this study. The involved patients all corresponded to the diagnosis criteria of cerebrovascular disease formulated in the 1995 National Conference of Cerebrovascular Disease and confirmed by skull CT or MRI examination. The age range was between 43 and 74 years. They all signed the informed consent for the detection and therapeutic regimen, and the application of this technique also gave the approval of the Ethics Committee of the hospital. METHODS： On admission, the patients were investigated on psychological problems using Hopkin symptom checklist. After admission, all the patients received oral administration of aspirin anti-platelet drugs and intravenous infusion of fufang Danshen. Motor relearning program was used in the rehabilitation treatment for disability rehabilitation. Mental intervention was carried out in the end of observation period. On day 30 after admission, the recovery of two groups of patients was compared using activities of daily living scale, Scandinanvian Stroke Scale （SSS） and disability level. MAIN OUTCOME MEASURES： The activities of daily living were assessed with Barthel index. Higher scores of patients suggested better activities of daily living. For SSS, the higher points, the severer defect degree. The reduction of scores of neurologic impairment suggested that neurological function improved. Disability level was graded according to the method formulated in the Second National Ce

关键词： stroke psychological problem depression psychotherapy

Variability of soil organic carbon reservation capability between coastal salt marsh and riverside freshwater wetland in Chongming Dongtan and its microbial mechanism

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Journal of Environmental Sciences 2012年第6期24卷 1053-1063页

作者： Yu Hu Yanli Li Lei Wang Yushu Tang Jinhai Chen xiaohua fu Yiquan Le Jihua Wu State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China School of Life Science Fudan UniversityShanghai 200433China

Two representative zones in Chongming Dongtan which faced the Yangtze River and East China Sea respectively were selected to study the variability of soil organic carbon （SOC） reservation capability between coastal wetland and riverside wetland in the Chongming Dongtan wetland as well as its mechanism by analyzing soil characteristics and plant *** results showed the SOC content of riverside wetland was only 48.61% （P=0.000 〈 0.05） that of coastal *** the organic matter inputs from plant litter of the coastal wetland and riverside wetland were approximately the same,the higher soil microbial respiration （SMR） of riverside wetland led to its lower SOC reservation *** the riverside wetland,the high soil microbial biomass,higher proportion of β-Proteobacteria,which have strong carbon metabolism activity and the existence of some specific aerobic heterotrophic bacteria such as Bacilli and uncultured Lactococcus,were the important reasons for the higher SMR compared to the coastal *** were additional differences in soil physical and chemical characteristics between the coastal wetland and riverside *** analysis of predominant bacteria and microbial biomass showed that soil salinity influenced β-Proteobacteria and microbial biomass most negatively among these physical and chemical *** the low salinity of the riverside area was suitable for the growth of microorganisms,especially β-Proteobacteria and some specific bacteria,which led to the high SMR and low SOC reservation capability when compared to the coastal area.

关键词： soil organic carbon carbon reservation capability community diversity coastal wetland riverside wetland ChongmingDongtan

Water quality prediction of copper-molybdenum miningbeneficiation wastewater based on the PSO-SVR model

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Frontiers of Environmental Science & Engineering 2023年第8期17卷 81-94页

作者： xiaohua fu Qingxing Zheng Guomin Jiang Kallol Roy Lei Huang Chang Liu Kun Li Honglei Chen Xinyu Song Jianyu Chen Zhenxing Wang Ecological Environment Management and Assessment Center Central South University of Forestry and TechnologyChangsha 410004China State Environmental Protection Key Laboratory of Water Environmental Simulation and Pollution Control South China Institute of Environmental SciencesMinistry of Ecology and EnvironmentGuangzhou 510655China Chinese Non-Ferrous Industrial Engineering Center of Pollution Control Technology&Equipment Science Environment Protection Co.Ltd.Changsha 410036China Institute of Computer Science University of TartuTartu 51009Estonia School of Environmental Science and Engineering Guangzhou UniversityGuangzhou 510006China A.B Freeman School of Business Tulane UniversityNew OrleansLA 70118USA Guangzhou Huacai Environmental Protection Technology Co. Ltd.Guangzhou 511480China

The mining-beneficiation wastewater treatment is highly complex and *** factors like influent quality,flow rate,pH and chemical dose,tend to restrict the effluent effectiveness of miningbeneficiation wastewater *** oxygen demand(COD)is a crucial indicator to measure the quality of mining-beneficiation *** COD concentration accurately of miningbeneficiation wastewater after treatment is essential for achieving stable and compliant *** reduces environmental risk and significantly improves the discharge quality of *** paper presents a novel AI algorithm PSO-SVR,to predict water *** optimization of our proposed model PSO-SVR,uses particle swarm optimization to improve support vector regression for COD *** generalization capacity tested on out-of-distribution(OOD)data for our PSOSVR model is strong,with the following performance metrics of root means square error(RMSE)is 1.51,mean absolute error(MAE)is 1.26,and the coefficient of determination(R2)is *** compare the performance of PSO-SVR model with back propagation neural network(BPNN)and radial basis function neural network(RBFNN)and shows it edges over in terms of the performance metrics of RMSE,MAE and R2,and is the best model for COD prediction of mining-beneficiation *** is because of the less overfitting tendency of PSO-SVR compared with neural network *** proposed PSO-SVR model is optimum for the prediction of COD in copper-molybdenum mining-beneficiation wastewater *** addition,PSO-SVR can be used to predict COD on a wide variety of wastewater through the process of transfer learning.

关键词： Chemical oxygen demand Mining-beneficiation wastewater treatment Particle swarm optimization Support vector regression Artificial neural network

Comprehensive therapeutic effect of the stroke rehabilitation unit in a medium-sized comprehensive community hospital

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Neural Regeneration Research 2006年第4期1卷 375-378页

作者： xiaohua fu Hong Wang Jia Sun Haiyan Sun Qingyang Song Yi Liu Hong Li Department of Neurology Beijing Longfu Hospital Beijing100010 China

BACKGROUND： Acute stroke unit （stroke care unit） is developing in some domestic large-sized hospitals, but most stroke patients need stroke rehabilitation unit therapy, so setting stroke rehabilitation unit in medium-sized comprehensive community hospital （secondary hospital）, where medical facility is relatively insufficient, is a new pathway to satisfy stroke patients. OBJECTIVE： To observe the comprehensive effect of developing stroke rehabilitation unit based on the facility of secondary hospital and its feasibility. DESIGN： Non-randomized concurrent controlled observation SETTING： Department of Neurology, Beijing Longfu Hospital PARTICIPANTS： Totally 264 stroke reconvalescents who suffered stroke for 7 days and received treatment in the Department of Neurology, Beijing Longfu Hospital during June 2003 to June 2005 were involved in the study. All the involved patients were confirmed by CT or MRI. The patients were scored by using Modified Edinbergh-Scandinavia stroke scale （SSS）〉 16 points. Written informed consents were obtained from all the patients. The patients were assigned into 2 groups according to the willing of patients and their relatives：（1）treatment group, in which, there were 134 patients, 76 males and 58 females, aged 43 to 74 years; cerebral infarction was found in 116 cases and cerebral hemorrhage in 18 cases;（2） control group, in which, there were 130 patients, 66 males and 64 females, aged 45 to 77 years, cerebral infarction was found in 115 cases and cerebral hemorrhage in 15 cases. There were significant differences in baseline data of the patients between two groups. METHODS： A same basic treatment was conducted in the patients of the two groups. （1） Patients in the treatment group admitted to stroke rehabilitation unit and received comprehensive rehabilitation treatment. The rehabilitation flow-sheet： randomization-letting the patients of treatment group go into the unit-making comprehensive assessment in the initial stage-makin

关键词： Comprehensive therapeutic effect of the stroke rehabilitation unit in a medium-sized comprehensive community hospital

A parallel approach to direct resolution of albuterol

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Chinese Science Bulletin 2010年第25期55卷 2814-2816页

作者： ZHONG QingLin PENG xiaohua WU TongFei fu FangMin CUI Xin ZHU Jin DENG JinGen National Engineering Research Center of Chiral Drugs and Key Laboratory of Asymmetric Synthesis & Chirotechnology of Sichuan Province Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041 China

A library consisting of a series of O,O'-diaryzoyl-L-(-)-tartaric acids (2) was designed and synthesized. The substituent on the aromatic ring of 2 significantly affects the diastereomeric excess and efficiency of the resolution of racemic albuterol (1). Excel-lent resolving reagent 2a was selected for the resolution of rac-1 via the parallel approach. However,a family of three resolving reagents failed to improve the resolution efficiency of rac-1.

关键词：沙丁胺醇并行方式直接解选择试剂 Excel RAC 脂肪酸酒石酸

Matrix-Mediated Color-Tunable Ultralong Organic Room Temperature Phosphorescence of 7H-Benzo[c]carbazole Derivatives

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CCS Chemistry 2024年第3期6卷 798-811页

作者： Chen Qian Xue Zhang Zhimin Ma xiaohua fu Zewei Li Huiwen Jin Mingxing Chen Hong Jiang Zhiyong Ma Beijing Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic–Inorganic CompositesCollege of Chemical EngineeringBeijing University of Chemical TechnologyBeijing 100029 Beijing National Laboratory for Molecular Sciences College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871

Building on the recent systematic research on 1Hbenzo[f]indole(Bd),an important advancement in constructing ultralong organic room temperature(UORTP)materials with a universal strategy via a readily obtained unit(7H-Benzo[c]carbazole,BCz)is proposed in this *** powders of BCz and its derivatives merely exhibit blue fluorescence at ambient ***,when BCz and its derivatives are dispersed into polymer or powder matrixes,strong photo-activated green UORTP can be observed from their doped systems at room ***,the UORTP color can be tuned between green and yellow depending on the *** ultralong phosphorescence originates from the generation of charge-separated states via *** matrixes play a key role in both stabilizing charge-separated states and controlling UORTP *** interestingly,when using polymethyl methacrylate as matrix,the doped films achieve stronger photo-activated ultralong phosphorescence underwater than in air at room *** Bd,BCz achieves better performance not only in ultralong phosphorescence properties but also in practical *** work gains a deeper insight into the mechanism of UORTP and paves a new approach to applying organic phosphorescent materials to underwater coating and imaging.

关键词： 7H-Benzo[c]carbazole ultralong organic room temperature phosphorescence ion radical matrix-mediated color tunning underwater application

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从可持续发展价值观透析科技创新生态化

科学管理研究 2006年第3期24卷 41-44页

作者：傅晓华中南林业科技大学社会科学部湖南长沙410004

可持续发展价值观本质上是一种创新发展观,生存发展危机本质上是价值观异化的危机。随着社会的发展,科技创新成为生产力变迁的决定因素,科技发展导致社会各个系统的调整与转变,致使其传统的价值观失去原有的合理性。科技创新生态化是人... 详细信息

可持续发展价值观本质上是一种创新发展观,生存发展危机本质上是价值观异化的危机。随着社会的发展,科技创新成为生产力变迁的决定因素,科技发展导致社会各个系统的调整与转变,致使其传统的价值观失去原有的合理性。科技创新生态化是人类可持续发展的必然选择。

关键词：可持续发展价值观科技创新生态化生产力自然环境经济增长

弹性地基上转动功能梯度材料Timoshenko梁自由振动的微分变换法求解

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中国机械工程 2018年第10期29卷 1147-1152页

作者：滕兆春昌博付小华兰州理工大学理学院兰州730050

基于Timoshenko梁理论研究弹性地基上转动功能梯度材料(FGM)梁的自由振动。首先确定功能梯度材料Timoshenko梁的物理中面,利用广义Hamilton原理推导出该梁在弹性地基上转动时横向自由振动的两个控制微分方程。其次采用微分变换法(DTM)... 详细信息

基于Timoshenko梁理论研究弹性地基上转动功能梯度材料(FGM)梁的自由振动。首先确定功能梯度材料Timoshenko梁的物理中面,利用广义Hamilton原理推导出该梁在弹性地基上转动时横向自由振动的两个控制微分方程。其次采用微分变换法(DTM)对控制微分方程及其边界条件进行变换,计算了弹性地基上转动功能梯度材料Timoshenko梁在夹紧-夹紧、夹紧-简支和夹紧-自由三种不同边界条件下横向自由振动的量纲一固有频率,与已有文献的计算结果进行比较,退化后结果一致。最后讨论了不同边界条件、转速、弹性地基模量和梯度指数对功能梯度材料Timoshenko梁自振频率的影响。结果表明:功能梯度材料Timoshenko梁的量纲一固有频率随量纲一转速和量纲一弹性地基模量的增大而增大;在量纲一转速和量纲一弹性地基模量一定的情况下,梁的量纲一固有频率随着功能梯度材料梯度指数的增大而减小。

关键词：弹性地基功能梯度材料转动Timoshenko梁自由振动微分变换法