检索结果-南通市图书馆

Journal of Environmental Sciences 2012年第11期24卷 1900-1907页

作者： Jinyou Shen Zongyuan zhou Changjin ou Xiuyun Sun Jiansheng Li Weiqing Han Lin zhou Lianjun Wang Jiangsu Key Laboratory of Chemical Pollution Control and Resources Reuse School of Environmental and Biological EngineeringNanjing University of Science and TechnologyNanjing 210094China School of Mechatronical Engineering Beijing Institute of TechnologyBeijing 100081China

A combined zero valent iron （ZVI） and anaerobic-aerobic process was adopted for the treatment of 2,4-dinitrochlorobenzene （DNCB）- containing wastewater. The transformation pathway, reduction of acute toxicity and enhancement of biodegradability were investigated, After pretreatment by ZVI, DNCB in wastewater could be completely converted into 2,4-diaminochlorobenzene （DACB）. The ratio of BODs/COD increased from 0.005±0.001 to 0.168±0.007, while EC50,48hr （V/V） increased from 0.65% to 5.20%, indicating the enhancement of biodegradability and reduction of acute toxicity with the pretreatment by ZVI. DACB was further dechlorinated to m-phenylenediamine during the anaerobic process using methanol as electron donor, with EC50＇ 48 hr increasing from 5.20% to 48.2%. After the subsequent anaerobic-aerobic process, m-phenylenediamine was degraded completely, with effluent COD of 67.5±10.8 mg/L. This effluent of the subsequent anaerobic-aerobic process was not toxic to zebrafish. The combined ZVI and anaerobic-aerobic process offers bright prospects for the treatment of chlorinated nitroaromatic compound-containing wastewater.

关键词： 2,4-dinitrochlorobenzene zero-valent iron toxicity biodegradability

Parallel Tempering Simulation on Generalized Canonical Ensemble

在线全文

学校读者我要写书评

暂无评论

Communications in Computational Physics 2012年第10期12卷 1293-1306页

作者： Shun Xu Xin zhou Zhong-Can ou-Yang School of Computer Science and Engineering and Guangdong Key Laboratory of Computer Network South China University of TechnologyGuangzhou 510641China College of Physical Sciences Graduate University of Chinese Academy of SciencesBeijing 100190China Asia Pacific Center for Theoretical Physics PohangGyeongbuk 790784Korea Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China.

Parallel tempering simulation is widely used in enhanced sampling of systems with complex energy *** hereby introduce generalized canonical ensemble(GCE)instead of the usual canonical ensemble into the parallel tempering to further improve abilities of the simulation *** utilizes an adapted weight function to obtain a unimodal energy distribution even in phase-coexisting region and then the parallel tempering on GCE yields the steady swap acceptance rates(SARs)instead of the fluctuated SARs in that on canonical *** the steady SARs,we can facilitate assign the parameters of the parallel tempering simulation to more efficiently reach equilibrium among different *** illustrate the parallel tempering simulation on GCE in the phase-coexisting region of 2-dimensional Potts model,a benchmark system for new simulation method *** result indicates that the new parallel tempering method is more efficient to estimate statistical quantities(i.e.,to sample the conformational space)than the normal parallel tempering,specially in phase-coexisting regions of larger systems.

关键词： Parallel tempering generalized canonical ensemble enhanced sampling Pottsmodel

Mechanical Properties and Fire Retardancy of Wood Flour/High-Density Polyethylene Composites Reinforced with Continuous Honeycomb-Like Nano-SiO_(2)Network and Fire Retardant

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Renewable Materials 2020年第5期8卷 485-498页

作者： Haiyang zhou Xiaoyu Wang Xiaolong Hao Qingwen Wang Rongxian ou Key Laboratory for Biobased Materials and Energy of Ministry of Education College of Materials and EnergySouth China Agricultural UniversityGuangzhou510642China Guangdong Laboratory for Lingnan Modern Agricultural Science and Technology Guangzhou510642China College of Arts South China Agricultural UniversityGuangzhou510642China

The mechanical properties of wood flour/high-density polyethylene composites(WPC)were improved by adding a small amount of nano-SiO_(2)to obtain a network-structured WPC with a continuous honeycomb-like nano-SiO_(2)*** wood flour was modified with a fire retardant(a mixture of sodium octabonate and amidine urea phosphate)to improve its fire *** flexural properties,creep resistance,thermal expansion,and fire retardancy of the WPC were compared to a control(WPCCTRL)without nano-SiO_(2)or fire *** flexural strength and modulus of the WPC containing only 0.55 wt.%nano-SiO_(2)were 6.6%and 9.1%higher than the control,respectively,while the creep strain and thermal expansion rate at 90°C were 33.8%and 13.6%lower,*** cone calorimetry tests revealed that the nano-SiO_(2)network physically shielded the WPC,giving it lower heat release and smoke production *** thermal expansion was further decreased by incorporating fire retardants into the WPC,which showed the lowest total heat release and total smoke production and the highest mass *** study demonstrates a facile procedure for producing WPC with desired performances by forming a continuous honeycomb-like network by adding a small amount of nanoparticles.

关键词： Wood plastic composites nano-SiO_(2) mechanical properties creep fire retardancy

A novel durable intelligent fiber reinforced polymer anchor with embedded optical fiber Bragg grating sensors

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2012年第5期55卷 1455-1462页

作者： HUANG MingHua zhou Zhi YUE Shuai HE JianPing ou JinPing School of Civil Engineering Harbin Institute of TechnologyHarbin 150090China Faculty oflnfrastructure Engineering Dalian University of TechnologyDalian 116024China

Anchors are the key members of the geotechnical anchorage engineering, it is urgent to monitor their behavior in service for preventing the potential risks. This paper proposes a novel durable intelligent fiber reinforced polymer （FRP） anchor to understand the behavior of the anchor in the field application. Series of optical fiber Bragg grating （FBG） sensors were embedded into the central axis along the anchor to sense itself axial strain variations. An evolution model of axial strain was also developed to evaluate the behavior along the anchor. A demonstration test was carried out to test its self-sensing properties in the laboratory. The experimental results indicated that the embedded FBG sensors monitored the behavior, e.g. axial strairl/interfacial damage evolutions along the anchor and displacement/applied load at the pulling end effectively, without influence from the interfacial compression and slip effects.

关键词： anchor fiber reinforced polymer optical fiber Bragg grating evolution model structural health monitoring

Predicting microbial extracellular electron transfer activity in paddy soils with soil physicochemical properties using machine learning

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2024年第1期67卷 259-270页

作者： ou JiaJun LUO XiaoShan LIU JunYang HUANG LinYan zhou LiHua YUAN Yong School of Automation Guangdong University of TechnologyGuangzhou 510006China Guangdong Key Laboratory of Environmental Catalysis and Health Risk Control Guangzhou Key Laboratory Environmental Catalysis and Pollution ControlSchool of Environmental Science and EngineeringInstitute of Environmental Health and Pollution ControlGuangdong University of TechnologyGuangzhou 510006China School of Biomedical and Pharmaceutical Sciences Guangdong University of TechnologyGuangzhou 510006China

Soil extracellular electron transfer(EET)is a pivotal biological process within the realm of ***,EET suffers from a lack of predictive ***,an intricately crafted machine learning model has been developed for the purpose of predicting soil EET by using the physicochemical properties of soil as independent input variables and the EET capabilities in terms of current density(j_(max))and Coulombic charge(C_(out))as dependent output *** autoencoder ensemble stacking(AES)model was developed to address the aforementioned issue by integrating support vector machine,multilayer perceptron,extreme gradient boosting,and light gradient boosting machine algorithms as the stacking *** 10-fold crossvalidation,the AES model exhibited notable improvements in predicting j_(max)and C_(out),with average test R^(2)values of 0.83 and 0.84,respectively,surpassing those of single machine learning(ML)models and the basic ensemble *** utilizing partial correlation plots(PDPs),Shapley Additive explanations(SHAP)values,and SHAP decision plots,we quantitatively explained the impact and contribution of the input molecules on the AES model’s predictions of j_(max)and C_(out).In the context of the SHAP method for the AES model,total carbon(TC)was identified as the most correlated descriptor for j_(max),while total organic carbon(TOC)stood out as the most relevant descriptor for C_(out).In the prediction tasks of j_(max)and C_(out)within the AES model,employing a multitask ML approach allowed the model to benefit from the shared information of input variables,thereby enhancing its overall *** study provides a feasible tool for the prediction of soil EET from soil physiochemical properties and an advanced understanding of the relationship between soil physiochemical properties and EET capability.

关键词： extracellular electron transfer paddy soil machine learning prediction autoencoder ensemble stacking model

中越边境市性病门诊男性就诊者艾滋病相关行为特征及HIV感染影响因素分析

在线全文

学校读者我要写书评

暂无评论

中国公共卫生 2019年第12期35卷 1628-1632页

作者：周欧路韦光武李爱明张建明李微伦农爱丹邬振先叶力梁冰玉梁浩广西艾滋病防治研究重点实验室广西医科大学公共卫生学院&生命科学研究院广西南宁530021 崇左市疾病预防控制中心凭祥市疾病预防控制中心

目的了解广西壮族自治区中越边境市性病门诊男性就诊者艾滋病病毒(HIV)感染情况并探讨其影响因素,为制定干预策略提供参考依据。方法于2010—2016年在广西壮族自治区中越边境凭祥市某性病门诊监测哨点对性病门诊男性就诊者9221人进行问... 详细信息

目的了解广西壮族自治区中越边境市性病门诊男性就诊者艾滋病病毒(HIV)感染情况并探讨其影响因素,为制定干预策略提供参考依据。方法于2010—2016年在广西壮族自治区中越边境凭祥市某性病门诊监测哨点对性病门诊男性就诊者9221人进行问卷调查,同时进行HIV、梅毒和丙肝血清学检测。结果2010—2016年广西壮族自治区中越边境市共监测9221人,年龄为15~95岁,84.50%就诊者年龄为20~59岁。2010—2016年共检测出HIV抗体阳性感染者136人,检出率为1.47%,HIV感染率呈下降趋势(趋势χ2=18.673,P=0.005);梅毒患者检出223人,检出率为2.24%;丙肝阳性患者66人,检出率为0.72%;艾滋病知识答对6条及以上知晓率为92.51%(8488/9221);最近3个月与暗娼发生过性行为的比例占29.4%(2715/9221);最近3个月与临时性伴发生性行为的比例占22.24%(2051/9221);注射过毒品的比例占0.74%(68/9221);与同性发生过肛交性行为的比例占0.17%(16/9221);最近1年接受过干预服务的比例为62.6%(5776/9221)。多因素logistic回归分析结果显示,年龄处于60~79岁(aOR=1.144,95%CI=0.327~4.002)、注射过毒品(aOR=6.439,95%CI=1.874~22.128)、与同性发生过肛交性行为(aOR=7.362,95%CI=1.281~42.329)和最近1年患过性病(aOR=1.922,95%CI=1.137~3.248)为性病门诊就诊者感染HIV的危险因素,知晓艾滋病知识为保护因素(aOR=0.054,95%CI=0.037~0.075)。结论2010—2016年广西壮族自治区中越边境市性病门诊就诊者HIV感染率虽有所下降但情况依然不容乐观,仍需加大力度坚持宣传艾滋病相关知识,并从行为上加强预防干预。

关键词：艾滋病男性性病门诊哨点监测影响因素

粪菌移植替代多巴胺能药物治疗帕金森病案例分析

在线全文

学校读者我要写书评

暂无评论

临床神经病学杂志 2019年第5期32卷 329-332页

作者：薛刘军欧洲王丽君魏明杨秀郑金龙佟强南京医科大学附属淮安第一医院神经内科

目的观察粪菌移植替代多巴胺能药物治疗帕金森病(PD)的疗效,探讨潜在的机制。方法为1例因服用多巴胺能药物出现幻觉而拒绝服药的PD患者行粪菌移植治疗,应用汉密尔顿抑郁量表(HAMD)、汉密尔顿焦虑量表(HAMA)、PD问卷(PDQ39)、匹兹堡睡眠... 详细信息

目的观察粪菌移植替代多巴胺能药物治疗帕金森病(PD)的疗效,探讨潜在的机制。方法为1例因服用多巴胺能药物出现幻觉而拒绝服药的PD患者行粪菌移植治疗,应用汉密尔顿抑郁量表(HAMD)、汉密尔顿焦虑量表(HAMA)、PD问卷(PDQ39)、匹兹堡睡眠质量指数(PSQI)、Bristol便秘评分、统一PD评定量表Ⅲ(UPDRSⅢ量表)对患者移植治疗前及移植治疗后4周、8周、12周的相关症状进行评分,同时对患者移植治疗前和移植治疗后4周、12周的粪菌进行16 s rRNA高通量基因测序分析菌群。结果与移植治疗前相比,移植治疗后HAMD、HAMA、PDQ39、PSQI、Bristol便秘评分、UPDRSⅢ量表评分均明显降低,粪菌16 s rRNA高通量测序显示粪菌移植治疗后拟杆菌属丰度下降,而瘤胃、布劳特、普雷沃等菌属丰度增高。结论粪菌移植对PD患者的非运动症状和运动症状均显示出明显效果,其机理可能与重建正常功能的肠道菌群密切相关。

关键词：粪菌移植帕金森病基因测序

全反式维甲酸对大鼠嘌呤霉素氨基核苷肾病蛋白尿的抑制作用

在线全文

学校读者我要写书评

暂无评论

复旦学报（医学版） 2005年第4期32卷 504-504页

作者：刘丽华朱春芳欧周罗绍兴文理学院医学院生物化学教研室绍兴312000 复旦大学上海医学院生物化学与分子生物学系上海200032

近年来，全反式维甲酸(全反式视黄酸，all-trans retinoic acid，ATRA)用于某些实验性增生性肾炎的治疗取得了良好的效果。引起了人们极大的兴趣。本文报告小剂量ATRA对大鼠非增生性嘌呤霉素氨基核苷肾病的改善作用。

关键词：全反式维甲酸嘌呤霉素氨基核苷肾病蛋白尿抑制作用大鼠全反式视黄酸氨基核苷肾病增生性肾炎 acid 改善作用 ATRA 实验性小剂量

Multi-scale Kalman filters algorithm for GPS common-view observation data based on correlation structure of discrete wavelet coefficients

在线全文

学校读者我要写书评

暂无评论

Frontiers of Electrical and Electronic Engineering in China 2007年第3期2卷 317-321页

作者： ou Xiaojuan zhou Wei School of Mechano-Electronic Engineering Xidian UniversityXi’an 710071China

Global positioning system(GPS)common-view observation data were processed by using the multi-scale Kalman algorithm based on a correlative structure of the discrete wavelet *** that the GPS commonview observation data has the 1/f fractal characteristic,the algorithm of wavelet transform was used to estimate the Hurst parameter H of GPS clock difference *** 0

关键词： communication multi-scale Kalman filters 1/f fractal characteristic correlation structure fractal increment

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

猪源丁酸梭菌分离及其对肠道绒毛发育的影响

齐鲁工业大学学报 2016年第3期30卷 28-31页

作者：欧阳志周朱文肖林刘洪明张杰齐鲁工业大学山东省微生物工程重点实验室山东济南250353 山东省科技统计分析研究中心山东济南250014 山东龙力生物科技股份有限公司山东禹城251200

通过梭菌强化培养基厌氧培养法从仔猪肠道内容物中分离获得1株丁酸梭菌。体外研究表明,该菌株无毒且具有较强耐高温、低p H及胆汁能力,同时对猪肠道绒毛发育具有促进作用,因此该菌株具有作为饲用微生态制剂的潜力。

关键词：丁酸梭菌分离鉴定有益菌肠绒毛发育