检索结果-南通市图书馆

生物-非生物添加剂协同促进餐饮业厨余垃圾厌氧消化——产气效能及微生物菌群动态变化

在线全文

学校读者我要写书评

暂无评论

中国环境科学 2023年第4期43卷 1757-1764页

作者：胡进会孟伟夏怡杨铮张欣雨祁光霞任连海北京工商大学生态环境学院北京100048 中国轻工业清洁生产和资源综合利用重点实验室(北京工商大学) 北京100048 中城院(北京)环境科技有限公司北京100120

围绕当前餐饮业湿热除油厨余垃圾(FORFW)厌氧消化甲烷产率不高、“酸积累”和“氨抑制”导致过程不稳定的问题,基于生物-非生物协同强化湿热除油餐饮业厨余垃圾厌氧消化的课题组的前期发现,通过三因素三水平中温厌氧消化正交试验系统探... 详细信息

围绕当前餐饮业湿热除油厨余垃圾(FORFW)厌氧消化甲烷产率不高、“酸积累”和“氨抑制”导致过程不稳定的问题,基于生物-非生物协同强化湿热除油餐饮业厨余垃圾厌氧消化的课题组的前期发现,通过三因素三水平中温厌氧消化正交试验系统探究并优化接种比、铁类添加剂添加量和酵母菌添加量3个条件参数,同时借助高通量测序阐明生物-非生物添加剂协同促进FORFW产甲烷的内在微生物机理.研究发现,3个条件参数对FORFW厌氧消化的甲烷产率影响由高至低为接种比>酵母菌添加量>铁类添加剂添加量.接种比1.5、铁类添加剂0.5%(质量分数)、活化酵母菌3%(质量分数)为较优的使用条件.在上述条件下,FORFW的挥发性固体(VS)去除率为40.1%,累积甲烷产率为237.5mL/gVS.体系中甲烷鬃毛菌属(Methanosaeta)、互营单胞菌属(Syntrophomonas)和Syner-01属相对丰度明显增加,实现了乳酸来源的丙酸高效转化.其中,甲烷鬃毛菌属与厌氧绳菌科细菌互营产甲烷,互营单胞菌属参与互营丁酸氧化,Syner-01属参与互营乙酸氧化和氨基酸氧化.因此,FORFW的甲烷产率得到了切实保证.

关键词：厌氧消化厨余垃圾餐饮业生物-非生物添加剂正交试验微生物动态

Nondestructive technique for identifying nuclides using neutron resonance transmission analysis at CSNS Back-n

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第1期35卷 178-187页

作者： Sheng-Da Tang Yong-Hao Chen Jing-Yu Tang Rui-Rui Fan Qiang Li Gong Li Dong Liu Zheng-Yao Jin xing-Zhu Cui Tian-Xiang Chen Yi-Wei Yang Rong Liu Han Yi Yang Li Zhen Yang Qi An Hao-Fan Bai Jiang-Bo Bai jie Bao Ping Cao Qi-Ping Chen Zhen Chen Zeng-Qi Cui An-Chuan Fan Chang-Qing Feng Fan-Zhen Feng Ke-Qing Gao Min-Hao Gu Chang-Cai Han Zi-jie Han Guo-Zhu he Yong-Cheng he Yang Hong Yi-Wei hu Han-Xiong huang Wei-hua Jia Hao-yu Jiang Wei Jiang Zhi-jie Jiang Ling Kang Bo Li Chao Li Jia-Wen Li Xiao Li jie Liu Shu-Bin Liu guang-Yuan Luan Chang-Jun Ning Bin-Bin Qi jie ren Zhi-Zhou ren Xi-Chao Ruan Zhao-hui Song Kang Sun Zhi-xin Tan Li-Jiao Wang Peng-Cheng Wang Zhao-hui Wang Zhong-Wei Wen Xiao-guang Wu Xuan Wu Li-Kun Xie Yong-Ji Yu Guo-hui Zhang Lin-Hao Zhang Mo-Han Zhang Qi-Wei Zhang Xian-Peng Zhang Yu-Liang Zhang Yue Zhang Zhi-Yong Zhang Mao-Yuan Zhao Lu-Ping Zhou Zhi-Hao Zhou Ke-Jun Zhu Sino-French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China Institute of High-Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China USTC Archaeometry Laboratory University of Science and Technology of ChinaHefei 230026China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China

Nondestructive and noninvasive neutron assays are essential applications of neutron *** resonance transmission analysis(NRTA)is a powerful nondestructive method for investigating the elemental composition of an *** back-streaming neutron line(Back-n)is a newly built time-of-flight facility at the China Spallation Neutron Source(CSNS)that provides neutrons in the eV to 300 MeV range.A feasibility study of the NRTA method for nuclide identification was conducted at the CSNS Back-n via two test *** results demonstrate that it is feasible to identify different elements and isotopes in samples using the NRTA method at *** study reveals its potential future applications.

关键词： CSNS White neutron beam NRTA Nuclide identification Nondestructive method

Study of the response of 10B-doped MCP to wide-energy range neutrons from eV to MeV

在线全文

学校读者我要写书评

暂无评论

Nuclear Science and Techniques 2024年第8期35卷 132-141页

作者： Qiang Li Li‑Jiao Wang Xiang‑Biao Qiu Jing‑Wen Li Wei Xu Tao Li Ze‑Bin Lin Chang‑Jun Ning Yong‑Hao Chen Rui‑Rui Fan Kang Sun Jing‑Yu Tang Rong Zhang Han‑Tao Jing Bo Mei Qi An Hao‑Fan Bai Jiang‑Bo Bai jie Bao Ping Cao Qi‑Ping Chen Zhen Chen Zeng‑Qi Cui An‑Chuan Fan Chang‑Qing Feng Fan‑Zhen Feng Ke‑Qing Gao Min‑Hao Gu Chang‑Cai Han Zi‑jie Han Guo‑Zhu he Yong‑Cheng he Yang Hong Yi‑Wei hu Han‑Xiong huang Wei‑hua Jia Hao‑Yu Jiang Wei Jiang Zhi‑jie Jiang Zheng‑Yao Jin Ling Kang Bo Li Chao Li Gong Li Jia‑Wen Li Xiao Li Yang Li jie Liu Rong Liu Shu‑Bin Liu guang‑Yuan Luan Bin‑Bin Qi jie ren Zhi‑Zhou ren Xi‑Chao Ruan Zhao‑hui Song Zhi‑xin Tan Sheng‑Da Tang Peng‑Cheng Wang Zhao‑hui Wang Zhong‑Wei Wen Xiao‑guang Wu Xuan Wu Li‑Kun Xie Yi‑Wei Yang Han Yi Yong‑Ji Yu Guo‑hui Zhang Lin‑Hao Zhang Mo‑Han Zhang Qi‑Wei Zhang Xian‑Peng Zhang Yu‑Liang Zhang Yue Zhang Zhi‑Yong Zhang Mao‑Yuan Zhao Lu‑Ping Zhou Zhi‑Hao Zhou Ke‑Jun Zhu Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center Dongguan 523803China State Key Laboratory of Particle Detection and Electronics Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Dongguan Songshan Lake Future School Dongguan 523808China North Night Vision Science&Technology(Nanjing)Research Institute Co.Ltd. Nanjing 211106China Sino‑French Institute of Nuclear Engineering and Technology Sun Yat-sen UniversityZhuhai 519082China School of Nuclear Science and Technology University of Science and Technology of ChinaHefei 230027China State Key Laboratory of Particle Detection and Electronics University of Science and Technology of ChinaHefei 230026China Department of Modern Physics University of Science and Technology of ChinaHefei 230026China State Key Laboratory of Nuclear Physics and Technology School of PhysicsPeking UniversityBeijing 100871China Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Key Laboratory of Nuclear Data China Institute of Atomic EnergyBeijing 102413China USTC Archaeometry Lab University of Science and Technology of ChinaHefei 230026China Northwest Institute of Nuclear Technology Xi’an 710024China University of Chinese Academy of Sciences Beijing 100049China

Neutron-sensitive microchannel plates(nMCPs)have applications in neutron detection,including energy spectrum measurements,neutron-induced cross sections,and neutron imaging.10B-doped MCPs(B-MCPs)have attracted significant attention owing to their potential for exhibiting a high neutron detection efficiency over a large neutron energy *** spatial and temporal resolutions are useful for neutron energy-resolved ***,their practical applications still face many technical *** this study,a B-MCP with 10 mol%10B was tested for its response to wide-energy neutrons from eV to MeV at the Back-n white neutron source at the China Spallation Neutron *** neutron detection efficiency was calibrated at 1 eV,which is approximately 300 times that of an ordinary MCP and indicates the success of 10 B *** factors that caused the reduction in the detection efficiency were simulated and *** neutron energy spectrum obtained using B-MCP was compared with that obtained by other measurement methods,and showed very good consistency for neutron energies below tens of *** response is more complicated at higher neutron energy,at which point the elastic and nonelastic reactions of all nuclides of B-MCP gradually become *** is beneficial for the detection of neutrons,as it compensates for the detection efficiency of B-MCP for high-energy neutrons.

关键词： Neutron radiation image 10B-doped MCP Neutron response Wide-energy range neutrons

Efficacy and safety of sirolimus early conversion protocol in liver transplant patients with hepatocellular carcinoma:A single-arm, multicenter, prospective study

在线全文

学校读者我要写书评

暂无评论

hepatobiliary & Pancreatic Diseases International 2022年第2期21卷 106-112页

作者： ren-Yi Su Sun-Bin Ling Qiao-Nan Shan Xu-Yong Wei Rui Wang Chang-Ku Jia Li Zhuang Tian Shen Li-Min Ding Zhi-Dan Xu Lai-Bang Luo Li-Bo Sun guang-ming Li Tai-Shi Fang Nan Jiang Kun Zhang Zhao-jie Su Zhi-Hai Peng ren Lang Tao Jiang Qiang he Lin-Sen Ye Yang Yang Yu-Ting he Wen-Zhi Guo Liu-Gen Lan Xu-Yong Sun Dong Chen Zhi-Shui Chen Da-Wei Zhou Shao-Jun Ye Qi-Fa Ye Min Tian Jian-hua Shi Bo Wang Jiang Liu Qian Lu Wei Rao Jin-Zhen Cai Tao Lv Jia-Yin Yang Pu-Sen Wang Lin Zhong Jing-Sheng Ma Qi-Gen Li Sheng-Dong Wu Chang-Jiang Lu Cai-De Lu Dong-hua Zhang Xuan Wang Zi-Qiang Li Mu-Jian Teng Jun-jie Li Wen-Tao Jiang Jian-hua Li Quan-Bao Zhang Ning-Qi Zhu Zheng-xin Wang Kang he Qiang Xia Shao-hua Song Zhi-ren Fu Wei Qiu Guo-Yue Lv Rui-Peng Song Ji-Zhou Wang Zheng Wang Jian Zhou Gang Chen Ying-Peng Zhao Li Li Ze-Min hu Qi-jie Luo Zhong-Zhou Si Bin Xie Xiao-Shun he Zhi-Yong Guo Shu-Sen Zheng Xiao Xu Department of hepatobiliary and Pancreatic Surgery The Center for Integrated Oncology and Precision MedicineAffiliated Hangzhou First People’s HospitalZhejiang University School of MedicineHangzhou 310006China NHC Key Laboratory of Combined Multi-organ Transplantation Hangzhou 310003China Department of hepatobiliary and Pancreatic Surgery Shulan(Hangzhou)HospitalZhejiang Shuren University School of MedicineHangzhou 310022China Department of hepatobiliary and Pancreatic Surgery The First Affiliated HospitalZhejiang University School of MedicineHangzhou 310003China Department of Transplantation Jiangxi Provincial People’s Hospital Affiliated to Nanchang UniversityNanchang 330006China Liver Transplantation Center Beijing You’an HospitalCapital Medical UniversityBeijing 100069China Department of hepatic Surgery National Clinical Research Center for Infectious DiseaseShenzhen Third People’s HospitalThe Second Affiliated Hospital of Southern University of Science and TechnologyShenzhen 518112China Department of General Surgery Xiang’an Hospital of Xiamen UniversityXiamen 361000China Deartment of hepatobiliary and Pancreaticosplenic Surgery Beijing Chaoyang HospitalCapital Medical UniversityBeijing 100020China Department of hepatic Surgery and Liver Transplantation Center The Third Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510630China Department of hepatobiliary and Pancreatic Surgery The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450052China Department of Liver Transplantation The Second Affiliated Hospital of Guangxi Medical UniversityNanning 530000China Institute of Organ Transplantation Tongji HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Institute of hepatobiliary Diseases of Wuhan University Transplant Center of Wuhan UniversityHubei Key Laboratory of Medical Technology on TransplantationZhongnan Hospital of Wuhan UniversityWuhan 430071China Department of hepatobiliary Surgery The First Affiliated Hos

Mammalian target of rapamycin(m TOR) inhibitor as an attractive drug target with promising antitumor effects has been widely investigated. High quality clinical trial has been conducted in liver transplant(LT) recipients in Western countries. However, the pertinent studies in Eastern world are paucity. Therefore, we designed a clinical trial to test whether sirolimus can improve recurrence-free survival(RFS) in hepatocellular carcinoma(HCC) patients beyond the Milan criteria after LT. This is an open-labeled, single-arm, prospective, multicenter, and real-world study aiming to evaluate the clinical outcomes of early switch to sirolimus-based regimens in HCC patients after LT. Patients with a histologically proven HCC and beyond the Milan criteria will be enrolled. The initial immunosuppressant regimens are center-specifc for the frst 4-6 weeks. The following regimens integrated sirolimus into the regimens as a combination therapy with reduced calcineurin inhibitors based on the condition of patients and centers. The study is planned for 4 years in total with a 2-year enrollment period and a 2-year follow-up. We predict that sirolimus conversion regimen will provide survival benefts for patients particular in the key indicator RFS as well as better quality of life. If the trial is conducted successfully, we will have a continued monitoring over a longer follow-up time to estimate indicator of overall survival. We hope that the outcome will provide better evidence for clinical decision-making and revising treatment guidelines based on Chinese population data.

关键词： Sirolimus Immunosuppressive agents hepatocellular carcinoma Liver transplantation Conversion

Ceftriaxone improves the cognitive dysfunction of vascular dementia mice via upregulating GLT-1 expression

在线全文

学校读者我要写书评

暂无评论

Ceftriaxone improves the cognitive dysfunction of vascular d...

热力耦合作用花岗岩细观破坏强度及声发射规律

中国神经科学学会第十届全国学术会议

作者： Shuang ren Cui xin Min ZHANG Yu-Yan hu Xiao-hui XIAN jie QI Wen-Bin LI Department of Pathophysiology Hebei Medical University

Objective The present study was undertaken to investigate the effect of ceftriaxone（Cef） on the learning and memory function,hippocampal neuronal survival,and GLT-1 expression of vascular dementia（VD） *** VD model was produced in old C57BL/6 mice by occluding the blood flow in the bilateral common carotid artery for20 min three times with 10 min *** water maze was used for spatial learning and memory *** evaluation for delayed neuronal death was performed under thionin staining by determining the histological grade in each hippocampal *** was used to observe the changes of *** In the orientation navigating test of Morris water maze,the escape latency of the VD mice were significantly ***,in the spatial searching test,the ratio of the time that the VD mice spent in the target quadrant was significantly *** results indicated that repeated brain ischemia-reperfusion by occluding the blood flow in the bilateral common carotid artery led to the decline in the acquisition and retention of spatial learning in old C57BL/6 mice,which could be a valid VD animal ***-1 expression in the hippocampal subfield was down-regulated in the VD ***,just a part of animals showed significant neuronal death,and other animals did not show significant abnormality either in the construction of the hippocampus or in the neuronal death in the ***-treatment with Cef significantly improved the spatial cognitive dysfunction of VD mice,which was represented by the decreased escape latency and increased ratio of the time that the mice spent in the target quadrant in Cef-treated VD ***,pre-treatment with Cef significantly decreased the neuronal death and reversed the down-regulation of GLT-1 in VD *** The above results suggest that Cef might improve the spatial cognitive dysfunction of VD mice induced by cerebral ischemia-reperfusion

关键词： vascular dementia ceftriaxone GLT-1 Morris water maze hippocampus C57BL/6 mice

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

煤炭学报 2015年第9期40卷 2065-2074页

作者：薛东杰周宏伟胡本任伟光中国矿业大学(北京)力学与建筑工程学院北京100083

利用SEM全数字液压高温疲劳实验系统开展花岗岩细观力学实验,采用多阈值分割法区分材料组成并构建细观数值模型,开展单轴拉伸条件下花岗岩热力耦合作用下的强度破坏特征与声发射规律研究。设计3种升温加载路径,路径Ⅰ:先升温到预定温度... 详细信息

利用SEM全数字液压高温疲劳实验系统开展花岗岩细观力学实验,采用多阈值分割法区分材料组成并构建细观数值模型,开展单轴拉伸条件下花岗岩热力耦合作用下的强度破坏特征与声发射规律研究。设计3种升温加载路径,路径Ⅰ:先升温到预定温度点后位移加载至破坏;路径Ⅱ:先加载到预定载荷点后升温至破坏;路径Ⅲ:以固定的载荷增量温度增量交替升温加载直至试件破坏。详细探讨了3种不同路径下声发射规律,在不同的温度强度区间,可分为3种类型。3种不同路径均表现为花岗岩的强度随温度的升高呈指数型衰减趋势,强度是温度的单值函数。细观模型中不同温度-载荷路径下的声发射特性主要取决于破坏时的温度和强度。

关键词：细观力学细观数值模型单轴拉伸热力耦合

基于双极化编码超表面生成的双模式轨道角动量

在线全文

学校读者我要写书评

暂无评论

物理学报 2023年第14期72卷 254-262页

作者：韩俊杰钱思贤朱传名黄志祥任信钢程光尚安徽大学电子信息工程学院合肥230601 安徽大学信息材料与智能感知安徽省实验室合肥230601

本文提出了一个超薄的4-bit双极化编码超表面,通过正交线极化波的独立操控来实现双模式涡旋波束的生成.提出的超表面从顶至下依次由“H”形的金属贴片、介质基板层和金属接地层组成.为了证明所提出的概念,设计并制造了一个编码超表面.... 详细信息

本文提出了一个超薄的4-bit双极化编码超表面,通过正交线极化波的独立操控来实现双模式涡旋波束的生成.提出的超表面从顶至下依次由“H”形的金属贴片、介质基板层和金属接地层组成.为了证明所提出的概念,设计并制造了一个编码超表面.制造的编码超表面,在正交线极化波的入射下被设计为携带不同拓扑荷的涡旋波束,工作中心频率为24.0 GHz.实验测试结果表明,理论设计与仿真结果吻合,从而证实了所提出的4-bit双极化编码超表面具有生成双模式涡旋波束的能力.这种超薄双模式涡旋生成器有着广泛的应用前景,特别是在图像和微波领域的无线通信系统中.

关键词：双极化涡旋波束编码超表面

以SBA-15为载体担载Ni-Mo制备深度加氢脱硫催化剂

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

石油学报（石油加工） 2008年第5期24卷 503-508页

作者：任靖曹光伟王安杰胡永康中国石化催化剂抚顺分公司辽宁抚顺113001 大连理工大学精细化工国家重点实验室辽宁大连116012 中国石化抚顺石油化工研究院辽宁抚顺113001

以TEOS为硅源、聚环氧乙烷-聚环氧丙烷-聚环氧乙烷三嵌段共聚物表面活性剂(P123)为模板剂,在水热条件下合成了SBA-15,用XRD、N2吸附、HRTEM等方法对其进行了表征。以SBA-15作载体,担载Ni-Mo制备了深度加氢脱硫(HDS)催化剂,在高压固定床... 详细信息

以TEOS为硅源、聚环氧乙烷-聚环氧丙烷-聚环氧乙烷三嵌段共聚物表面活性剂(P123)为模板剂,在水热条件下合成了SBA-15,用XRD、N2吸附、HRTEM等方法对其进行了表征。以SBA-15作载体,担载Ni-Mo制备了深度加氢脱硫(HDS)催化剂,在高压固定床反应器上以二苯并噻吩(DBT)和4,6-二甲基-二苯并噻吩(4,6-DMDBT)为模型化合物,考察了以SBA-15作载体的催化剂对DBT和4,6-DMDBT的HDS活性。结果表明,合成的SBA-15具有较高的比表面积、均匀的孔径。SBA-15担载Ni-Mo制备的催化剂表现出较高的加氢脱硫活性,其中Ni/Mo原子比为0.25时,催化剂的加氢脱硫活性最高。

关键词： SBA-15 Ni—Mo 深度加氢脱硫

北京2004年一次强沙尘暴过程的辐射特征研究

在线全文

学校读者我要写书评

暂无评论

气候与环境研究 2005年第2期10卷 265-274页

作者：胡波王跃思何新星刘广仁中国科学院大气物理研究所

利用2004年3月27～29日北京沙尘暴期间观测的辐射、气象以及气溶胶质量浓度的资料,分析了该过程的地面辐射、气象要素以及气溶胶与辐射相互作用的变化特征。结果表明,沙尘暴期间紫外辐射的衰减与可见光辐射强度衰减规律不一致。紫外衰... 详细信息

利用2004年3月27～29日北京沙尘暴期间观测的辐射、气象以及气溶胶质量浓度的资料,分析了该过程的地面辐射、气象要素以及气溶胶与辐射相互作用的变化特征。结果表明,沙尘暴期间紫外辐射的衰减与可见光辐射强度衰减规律不一致。紫外衰减主要受到细粒子浓度影响,同时紫外辐射占总辐射的比重与气溶胶中细粒子含量成负相关;而可见光辐射强度衰减与总辐射衰减同步。辐射变化和气溶胶质量浓度观测结果均表明,此次沙尘暴过程分为3个阶段,即,细粒子累积期、外地沙尘输入期和清除期。在沙尘暴期间地面一直维持一个低压、干冷的状态;当过程结束后,气压急剧增高,并在一段时间内处于高压控制之下。

关键词：沙尘暴太阳辐射 PM2.5 PM10