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CO_(2)/N_(2)/C_(2)H_(4)及C_(2)H_(6)分子在烟煤中的吸附模拟

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煤炭技术 2024年第3期43卷 179-183页

作者：程根银汤晓辰司俊鸿华北科技学院安全工程学院河北燕郊065201

C_(2)H_(4)和C_(2)H_(6)作为指标性气体易受到采空区残煤的吸附影响,降低其评价准确性。因此,为明确C_(2)H_(4)和C_(2)H_(6)在煤中的吸附特征,建立两种不同挥发分烟煤分子模型,采用密度泛函理论(DFT)和巨正则蒙特卡罗(GCMC)方法对两种... 详细信息

C_(2)H_(4)和C_(2)H_(6)作为指标性气体易受到采空区残煤的吸附影响,降低其评价准确性。因此,为明确C_(2)H_(4)和C_(2)H_(6)在煤中的吸附特征,建立两种不同挥发分烟煤分子模型,采用密度泛函理论(DFT)和巨正则蒙特卡罗(GCMC)方法对两种气体进行吸附模拟研究。结果表明:C2H6在烟煤中的吸附量最小,C_(2)H_(4)吸附量比CO_(2)小;在同一种煤中C2H6最容易达到吸附极限,C_(2)H_(4)次之,且吸附速率与温度呈反比。各含氧官能团静电势最小值出现在O原子附近。煤吸附气体时,C_(2)H_(4)和C2H6与含氧官能团结合能力介于CO_(2)和N_(2)之间。另外,—COOH相互作用能更大,其更容易成为C_(2)H_(4)和C_(2)H_(6)的吸附位点。

关键词：密度泛函理论蒙特卡罗烟煤吸附

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文献计量视角下光伏与生态环境进展研究

江苏科技信息 2024年第4期41卷 122-125页

作者：张琳范若婷汤晓辰国家能源集团国华投资公司北京100007 华北科技学院矿山安全学院河北三河065201

光伏能源发展给生态环境保护带来了新的挑战。文章从文献计量角度对我国光伏与生态环境的研究进行梳理和统计分析,包括相关文献发表情况、关键词共现和主题演化等,揭示光伏与生态环境领域研究现状和发展趋势。结果表明:我国关于“光伏... 详细信息

光伏能源发展给生态环境保护带来了新的挑战。文章从文献计量角度对我国光伏与生态环境的研究进行梳理和统计分析,包括相关文献发表情况、关键词共现和主题演化等,揭示光伏与生态环境领域研究现状和发展趋势。结果表明:我国关于“光伏生态”领域的发文量总体呈上升趋势。关键词共现表明,当前关于光伏生态的研究趋向于多元化,研究热点主要集中在光伏技术及其应用、生态与环境保护、乡村振兴与扶贫3个主题,主题演化与我国国家政策关系密切。

关键词：光伏生态环境清洁能源文献计量

CO_(2)/O_(2)在不同含水率烟煤中的竞争吸附模拟研究

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华北科技学院学报 2024年第3期21卷 10-15页

作者：周生啟张雅宙汤晓辰程根银蔡春城上海大屯能源股份有限公司江苏分公司孔庄煤矿江苏徐州221600 华北科技学院安全工程学院北京东燕郊065201

为研究CO_(2)/O_(2)混合气体在不同含水率烟煤中的竞争吸附特征,分别建立了含水率为1.42%、3.48%和5.45%的烟煤分子模型,在不同温度和压力条件下进行煤对CO_(2)/O_(2)混合气体的吸附模拟研究。结果表明:不同含水率煤中CO_(2)的吸附能力... 详细信息

为研究CO_(2)/O_(2)混合气体在不同含水率烟煤中的竞争吸附特征,分别建立了含水率为1.42%、3.48%和5.45%的烟煤分子模型,在不同温度和压力条件下进行煤对CO_(2)/O_(2)混合气体的吸附模拟研究。结果表明:不同含水率煤中CO_(2)的吸附能力优于O_(2),煤中水分含量增加对CO_(2)和O_(2)气体的吸附起到抑制作用,并且对CO_(2)的抑制作用更强。整个体系的相互作用能与CO_(2)的比例成正比,与煤的含水率成反比。说明向煤层注入CO_(2)时,含水率越高越不利于煤对气体的吸附,低压低温状态有利于增强防治煤自燃的效果。

关键词： CO_(2)/O_(2)混合气体竞争吸附含水率相互作用能

Different patterns of association between white matter microstructure and plasma unsaturated fatty acids in those with high risk for psychosis and healthy participants

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General Psychiatry 2022年第2期35卷 109-118页

作者： Wenjun Su Zhixing Li Lihua Xu Jiahui Zeng Yingying tang xiaochen tang Yanyan Wei Qian Guo Tianhong Zhang Jijun Wang Shanghai Key Laboratory of Psychotic Disorders Shanghai Mental Heaith Center Shanghai Jiao Tong University School of MedicineShanghaiChina CAS Center for Excellence in Brain Science and Intelligence Technology(CEBSIT) Chinese Academy of ScienceShanghaiChina Institute of Psychology and Behavioral Science Shanghai Jiao Tong UniversityShanghaiChina

Background Disrupted white matter(WM)microstructure has been commonly identified in youth at clinical high risk(CHR)for *** lines of evidence suggest that fatty acids,especially unsaturated fatty acids(UFAs),might play a crucial role in the WM pathology of early onset ***,evidence linking UFA and WM microstructure in CHR is quite *** We investigated the relationship between the plasma UFA level and WM microstructure in CHR participants and healthy controls(HC).Methods Plasma fatty acids were assessed and diffusion tensor imaging(DTI)data were performed with tract-based spatial statistics(TBSS)analysis for 66 individuals at CHR for psychosis and 70 *** Both the global and regional diffusion measures showed significant between-group differences,with decreased fractional anisotropy(FA)but increased mean diffusivity(MD)and radial diffusivity(RD)found in the CHR group compared with the HC *** top of that,we found that in the HC group,plasma arachidic acid showed obvious trend-level associations with higher global FA,lower global MD and lower global RD,which regionally spread over the corpus callosum,right anterior and superior corona radiata,bilateral anterior and posterior limb of the internal capsule,and bilateral superior longitudinal ***,there were no associations between global WM measures and any UFA in the CHR ***,we even found negative associations between arachidic acid levels and regional FA values in the right superior longitudinal fasciculus and right retrolenticular part of the internal capsule in the CHR *** Compared with the HC group,CHR subjects exhibited a different pattern of association between WM microstructure and plasma UFA,with a neuroprotective effect found in the HC group but not in the CHR *** discrepancy could be due to the excessively upregulated UFAs accumulated in the plasma of the CHR group,highlighting the role of balanced plasma-membrane fatty

关键词： unsaturated diffusion linking

Reduced temporal activation during a verbal fluency test in clinical high risk of psychosis: a functional near-infrared spectroscopy-based study

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General Psychiatry 2022年第2期35卷 101-108页

作者： Yanyan Wei xiaochen tang Tingyu Zhang Wenjun Su Lihua Xu Huiru Cui Zhenying Qian Tianhong Zhang Jijun Wang EEG and Neuroimaging Department Shanghai Mental Heath Center Shanghai Jiao Tong University School of MedicineShanghaiChina The Seventh Affiliated Hospital Sun Yat-sen University ShenzhenChina Shanghai Key Laboratory of Psychotic Disorders Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina CAS Center for Excellence in Brain Science and Intelligence Technology(CEBSIT) Chinese Academy of ScienceShanghaiChina Institute of Psychology and Behavioral Science ShanghaiJiao Tong UniversityShanghaiChina

Background Clinical high risk(CHR)of psychosis is a state in which positive symptoms cause the subjects distress but do not approach a severity level that fulfils the criteria for a psychotic *** exhibits cognitive deficits;however,the underlying neurobiological mechanisms remain *** study aimed to investigate whether brain activation measured by the levels of oxygenated hemoglobin(oxy-Hb)in CHR subjects could be correlated with cognitive *** Fifty-eight CHR individuals who fulfilled the criteria for attenuated positive syndrome as specified in the Structured Interview for Prodromal Syndrome(SIPS)and the Scale of Prodromal Syndrome(SOPS)and 58 age-and sex-matched healthy participants were included in the *** subjects completed the Measurement and Treatment Research to Improve Cognition in Schizophrenia(MATRICS)Consensus Cognitive Battery(MCCB)that includes tests measuring attention,verbal memory,verbal fluency,executive function,and general *** near-infrared spectroscopy(fNIRS)was used to measure the level of oxy-Hb in the dorsolateral prefrontal and frontotemporal *** We observed significantly decreased oxy-Hb levels in channel 32(located in the right superior temporal gyrus,rSTG)within the CHR individuals compared with that in the healthy controls(HCs)(t=−3.44,Bonferroni-corrected p=0.002),indicating lower brain activity.A significant positive correlation was observed between task-relatedβvalues and working memory in the CHR group(r=0.35,p=0.008).Conclusions The brain activation of rSTG is abnormal among subjects at clinicial high risk for *** abnormality is probably associated with the neural mechanisms of deficits in the working memory during the early stage of psychosis.

关键词： distress activation verbal

Relationships between selfreflectiveness and clinical symptoms in individuals during pre-morbid and early clinical stages of psychosis

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General Psychiatry 2022年第3期35卷 163-172页

作者： Lihua Xu Huiru Cui Yanyan Wei Zhenying Qian xiaochen tang Yegang Hu Yingchan Wang Hao Hu Qian Guo Yingying tang Tianhong Zhang Jijun Wang Shanghai Intelligent Psychological Evaluation and Intervention Engineering Technology Research Center Shanghai Key Laboratory of Psychotic DisordersShanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Department of Psychiatry Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Department of Early Psychotic Disorders Shanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Center for Excellence in Brain Science and Intelligence Technology(CEBSIT) Chinese Academy of ScienceShanghaiChina Brain Science and Technology Research Center Shanghai Jiao Tong UniversityShanghaiChina

Background Self-reflectiveness,one dimension of cognitive insight,plays a protective role in an individual’s mental *** high and low levels of self-reflectiveness have been reported in patients with schizophrenia and individuals at clinical high risk for the *** This study aimed to explore the relationship patterns between self-reflectiveness and clinical symptoms in individuals during the pre-morbid and early clinical stages of *** A total of 181 subjects,including individuals with attenuated positive symptoms(APS,n=122)and patients with first-episode psychosis(FEP,n=59),completed the Beck Cognitive Insight Scale and were evaluated using the Schedule of Assessment of Insight and Positive and Negative Syndrome *** subjects were classified into three groups according to their level of selfreflectiveness:low level(LSR,n=59),medium level(MSR,n=67)and high level(HSR,n=55).Both linear and nonlinear relationships between self-reflectiveness and clinical symptoms were *** More individuals with APS were classified into the MSR group,while more patients with FEP were classified into the LSR *** LSR group demonstrated less awareness of illness than the MSR and HSR groups,more stereotyped thinking and poorer impulse control but less anxiety than the MSR group,and lower levels of blunted affect and guilt feelings than the HSR *** MSR group demonstrated lower stereotyped thinking than the HSR *** to the LSR group,the MSR group had increased selfreflectiveness,improved awareness of illness,decreased stereotyped thinking,and better impulse control,but increased feelings of *** HSR group showed increased stereotyped thinking when compared to the MSR group,but the other variables did not change significantly between these two ***,self-reflectiveness demonstrated an approximately inverse S-shaped relationship with the awareness of illness,a U-shaped relationship with stereotyped thinking and poor

关键词： clinical symptoms morbid

Abnormal neural oscillations in clinical high risk for psychosis:a magnetoencephalography method study

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General Psychiatry 2022年第2期35卷 148-153页

作者： Yegang Hu Jun Wu Yujiao Cao xiaochen tang Guisen Wu Qian Guo Lihua Xu Zhenying Qian Yanyan Wei Yingying tang Chunbo Li Tianhong Zhang Jijun Wang Shanghai Mental Health Center Shanghai Jiao Tong University School of MedicineShanghaiChina

Background Neural oscillations directly reflect the rhythmic changes of brain activities during the resting state or while performing specific *** neural oscillations have been discovered in patients with ***,there is limited evidence available on abnormal spontaneous neural oscillations in clinical high risk for psychosis(CHR-P).The brain signals recorded by the magnetoencephalography(MEG)technique are not to be disrupted by the skull and *** In this study,we applied the MEG technique to record the resting-state neural activities in *** was followed by a detailed MEG analysis method including three steps:(1)preprocessing,which was band-pass filtering based on the 0.5-60Hz frequency range,removal of 50Hz power frequency interference,and removal of electrocardiography(ECG)and electrooculography(EOG)artefacts by independent component analysis;(2)time-frequency analysis,a multitaper time-frequency transformation based on the Hanning window,and(3)source *** exact low-resolution brain electromagnetic *** method was verified by comparing aparticipant with CHR-P with a healthy control during the MEG recordings with an eyes-closed resting *** Experimental results show that the neural oscillations in CHR-P were significantly abnormal in the theta frequency band(4-7Hz)and the delta frequency band(1-3Hz).Also,relevant brain regions were located in the left occipital lobe and left temporo-occipital junction for the theta band and in the right dorsolateral prefrontal lobe and near orbitofrontal gyrus for the delta *** Abnormal neural oscillations based on specific frequency bands and corresponding brain sources may become biomarkers for high-risk *** work will validate these characteristics in CHR-P cohorts.

关键词： steps bands exact

Attenuated niacin-induced skin flush response in individuals with clinical high risk for psychosis

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General Psychiatry 2022年第2期35卷 92-100页

作者： Ranpiao Gan Yanyan Wei Guisen Wu Jiahui Zeng Yegang Hu Lihua Xu xiaochen tang Xiaohua Liu Haichun Liu Tao Chen Jijun Wang Tianhong Zhang Shanghai Intelligent Psychological Evaluation and Intervention Engineering Technology Research Center Shanghai Key Laboratory of Psychotic DisordersShanghai Mental Health CenterShanghai Jiao Tong University School of MedicineShanghaiChina Department of Automation Shanghai Jiao Tong UniversityShanghaiChina Big Data Research Lab University of WaterlooWaterlooOntarioCanada Center for Excellence in Brain Science and Itelligence Technology(CEBSIT) Chinese Academy of ScienceShanghaiChina Brain Science and Technology Research Center Shanghai Jiao Tong UniversityShanghaiChina

Background Im paired sesitwity of he soin Mlush response bo miacin is one of the most rpicated findngs in patents with schizoprenia *** studies have usaly focused on postonset psychusis,and ll is knowm about the dinical high-risk(CHR)phase of niacin senstity in psychosis Aims To proftle and compare the miacin flush responsge among CHR individuals(converters and non-coverters)patients with frstepso schinophrenia(FES)and healty controls(HCs).Methods Sensivily 1o ftour concentralions (0.1-0001M)of aqueous methylnicotinate was tested in 105 CHR individuals,57 patients with FES and 52 *** individuals were further grouped as converters and non converters according to the 2-year follow-up *** flush response scores were rated on a 4-point *** Of the 105 CHR individuals,21 individuals were lost during the study,leaving 84 CHR individuals;16(19.0%)converted to full psychosis at 2 years of *** response scores identifed in the CHR samples were characterised as modest degree levels,intermediate between those of HC individuals and patients with *** flush responses in the CHR group mimicked the responses observed in the FES group at higher concentrations(0.01 M,0.1 M)and longer time points(15 min,20min);however,these became comparable vith the responses in the HC group at the shorter time points and at lower concentr *** converters exhibited lower mean flush response scores than the *** Attenuated niacin-induced flushing emerged during the early phase of *** devices should be developed and verified for objective quantification of skin responses in the CHR population.

关键词： Skin high shorter

Different sites of extranodal involvement may affect the survival of patients with relapsed or refractory non-Hodgkin lymphoma after chimeric antigen receptor T cell therapy

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Frontiers of Medicine 2020年第6期14卷 786-791页

作者： Lili Zhou Ping Li Shiguang Ye xiaochen tang Junbang Wang Jie Liu Aibin Liang Department of Hematology Tongji Hospital of Tongji UniversityShanghai 200065China

Factors associated with complete and durable remissions after anti-CD19 chimeric antigen receptor T(CAR-T)cell immunotherapy for relapsed or refractory non-Hodgkin lymphoma(r/r NHL)have not been well *** this study,we found that the different sites of extranodal involvement may affect response,overall survival(OS),and progression-free survival(PFS)in patients with r/r NHL treated with anti-CD19 CAR-T *** a cohort of 32 treated patients,12(37.5%)and 8(25%)patients exhibited soft tissue lymphoma and bone marrow(BM)infiltrations,respectively,and 13(41%)patients exhibited infiltration at other *** factors that may affect prognosis were identified through multivariable *** an independent risk factor,soft tissue infiltration was the only factor significantly correlated with adverse prognosis(P<0.05),whereas other factors did not reach statistical ***,the site of extranodal tumor infiltration significantly and negatively affected OS and PFS in patients with r/r NHL treated with anti-CD19 CAR-T cell *** and OS in patients with BM involvement were not significantly different from those of patients with lymph node involvement ***,anti-CD19 CAR-T cell therapy may improve the prognosis of patients with BM infiltration.

关键词： anti-CD19 chimeric antigen receptor T cell soft tissue bone marrow relapsed or refractory non-Hodgkin lymphoma