检索结果-南通市图书馆

Correlation of anaerobic ammonium oxidation and denitrification

在线全文

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2006年第2期18卷 227-231页

作者： ZHU Jing-ping HU Yong-you liang hui-qiang College of Environmental Science and Engineering South China University of Technology Guangzhou 510640 China College of Environment and Resources Engineering Southwest University Science and Technology Mianyang 621002 China

The feasibility of the nitrous organic wastewater treated was studied in seven anaerobic sequencing batch reactors（ASBRs）（0^#-6^#） which had been run under stable anaerobic ammonium oxidation （Anammox）. By means of monitoring and data analysis of COD, NH4^#-N, NO2^--N, NO3^--N and pH, and of microbial test, the results revealed that the optimal Anammox performance was achieved from 2^# reactor in which COD/NH4^＋ -N was 1.65, Anammox bacteria and denitrification bacteria could coexist, and Anammox reaction and denitrification reaction could occur simultaneously in the reactors. The ratio of NH4^＋-N consumed ： NO2^- -N consumed ： NO3^- -N produced was 1：1.38：0.19 in 0^# reactor which was not added glucose in the wastewater. When different ratio of COD and NH4^＋-N was fed for the reactors, the ratio of NO2^- -N consumed： NH4^＋-N consumed was in the range of 1.51-2.29 and the ratio of NO;-N produced： NH4^＋ -N consumed in the range of 0 -0.05.

关键词： anaerobic ammonium oxidation (Anammox) anaerobic sequencing batch reactor (ASBR) biological denitrification denitrification

Effect of sintering temperature on the microstructure and thermal conductivity of Al/diamond composites prepared by spark plasma sintering

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2010年第2期17卷 234-240页

作者： Ke Chu Cheng-chang Jia Xue-bing liang hui Chen School of Materials Science and Engineering University of Science and Technology Beijing Beijing 100083 China

Spark plasma sintering was used to fabricate Al/diamond *** effect of sintering temperature on the microstructure and thermal conductivity（TC） of the composites was investigated with the combination of experimental results and theoretical *** composite sintered at 550℃shows high relative density and strong interfacial bonding,whereas the composites sintered at lower（520CC） and higher（580-600℃） temperatures indicate no interfacial bonding and poor interfacial bonding,*** relative density and strong interfacial bonding can maximize the thermal conductivity of Al/diamond composites,and taking both effects of particle shape and inhomogeneous interfacial thermal conductance into consideration can give a fairly good prediction of composites＇ thermal conduction properties.

关键词： metal matrix composites thermal properties spark plasma sintering interface

在线全文

学校读者我要写书评

暂无评论

益肾结透合剂质量标准研究

广西中医药大学学报 2024年第1期27卷 58-61,69页

作者：任龙艳杨亮梁会曾真蒋玲王霞贵州中医药大学贵州贵阳550025 贵州中医药大学第二附属医院贵州贵阳550000

[目的]建立益肾结透合剂的质量标准。[方法]采用薄层色谱法对益肾结透合剂中白茅根、生大黄和荷叶进行定性鉴别;采用高效液相色谱法测定制剂中绿原酸的含量,色谱柱为Welch Ultimate PolarRP C18柱(4.6 mm×250 mm,5μm),流动相为乙腈-0.... 详细信息

[目的]建立益肾结透合剂的质量标准。[方法]采用薄层色谱法对益肾结透合剂中白茅根、生大黄和荷叶进行定性鉴别;采用高效液相色谱法测定制剂中绿原酸的含量,色谱柱为Welch Ultimate PolarRP C18柱(4.6 mm×250 mm,5μm),流动相为乙腈-0.05%磷酸水溶液(95∶5),检测波长为326 nm,柱温为30℃,流速为0.8 ml/min,进样量为10μl。[结果]白茅根、荷叶、生大黄的薄层色谱图斑点清晰,且与阴性对照相互无干扰;绿原酸的进样量在0.3~2.0μg之间线性关系良好,回归方程为Y=65304X+62016(r=0.9998);且重复性试验、精密度试验、稳定性试验的相对标准偏差(RSD)均≤3%;平均加样回收率为100.73%,RSD为1.75%(n=6);绿原酸平均含量为3.86 mg/ml。[结论]本研究建立的定性、定量方法重复性好,专属性强,结果准确,可用于益肾结透合剂的质量控制。

关键词：益肾结透合剂绿原酸薄层色谱法高效液相色谱法质量标准

Assessment effect of central venous pressure in fluid resuscitation in the patients with shock： a multi-center retrospective research

在线全文

学校读者我要写书评

暂无评论

Chinese Medical Journal 2013年第10期126卷 1844-1849页

作者： HU Bo XIANG hui liang hui YULi XU Tao YANG Jun-hui DU Zhao-hui LI Jian-guo Department of Intensive Care Unit Zhongnan Hospital of WuhanUniversity Wuhan Hubei 430071 China Department of Intensive Care Unit Wuhan Central Hospital WuhanHubei 430014 China Department of Intensive Care Unit Wuhan Pu'ai Hospital WuhanHubei 430032 China

Background Central venous pressure （CVP） and intrathoracic blood volume index （ITBVI） were used to assess the fluid status. It has previously been shown that CVP is not as accurate as ITBVI for all the shock patients. We therefore hypothesized that the change of CVP has the ability to predict fluid responsiveness in some clinical cases of shock. Methods From September 1st 2009 to September 1st 2011, sixty-three patients with shock from different Intensive Care Unit （ICU） were collected into this retrospective study. All the patients received fluid challenge strategy （infusing 300 ml hydroxyethyl starch in 20 minutes）, were monitored with CVP and pulse-indicated continuous cardiac output （PICCO）. The correlation between changes in cardiac index （ACI）, CVP （ACVP） and ITBVI （AITBVI） were analyzed. Fluid responsiveness was defined as an increase in CI 〉10%. Receiver operating characteristic （ROC） curves were generated for ACVP and AITBVI. Results For all the patients, there was no correlation between ACI and ACVP （P=0.073）, but in the subgroup analysis, the correlation between ACI and ACVP was significant in those younger than 60 years old （P=0.018） and those with hypovolemic shock （P=0.001）. The difference of areas under the ROC curves of ACVP and AITBVI were not statistically significant in the group younger than 60 years old or hypovolemic shock group （P 〉0.05, respectively）. However, no similar results can be found in the group older than 60 years old and the other two shock type groups from ROC curves of ACVP and AITBVI. Conclusions ACVP is not suitable for evaluating the volume status of the shock patients with fluid resuscitation regardless of their condition. However, in some ways, ACVP have the ability to predict fluid responsiveness in the younger shock patients or in the hypovolemic shock patients.

关键词： shock fluid therapy, central venous pressure, thermodilution

基于BDNF通路探讨化痰通络汤治疗卒中后认知功能障碍的研究

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

南京中医药大学学报 2024年第9期40卷 979-984页

作者：杨洋阮甦梁晖陈巧兰严年文黄燕苹福建中医药大学附属人民医院福建福州350004 南安市中医院神经内科福建泉州330599

目的观察化痰通络汤治疗卒中后认知功能障碍(PSCI)痰瘀阻络证的临床疗效及其对患者血清脑源性神经营养因子(BDNF)通路相关因子的影响。方法收集符合纳入标准的患者60例,随机分为对照组和治疗组各30例。对照组予基础治疗和尼莫地平治疗... 详细信息

目的观察化痰通络汤治疗卒中后认知功能障碍(PSCI)痰瘀阻络证的临床疗效及其对患者血清脑源性神经营养因子(BDNF)通路相关因子的影响。方法收集符合纳入标准的患者60例,随机分为对照组和治疗组各30例。对照组予基础治疗和尼莫地平治疗,治疗组在对照组治疗基础上加服化痰通络汤,2组疗程均为4周。治疗前后比较2组简易精神状态评价量表(MMSE)、中医证候积分及血清BDNF、核转录因子κB(NF-κB)、B淋巴细胞瘤-2(Bcl-2)、Bcl-2相关X蛋白(Bax)水平变化,治疗后评估2组患者中医临床疗效,治疗期间观察2组患者不良反应发生情况。结果治疗后,2组患者MMSE评分显著增加,中医证候积分总积分明显降低(P<0.01),治疗组优于对照组(P<0.01);2组患者血清BDNF、NF-κB、Bcl-2水平明显升高(P<0.05,P<0.01),Bax水平明显下降(P<0.01),治疗组优于对照组(P<0.01)。结论化痰通络汤能够改善痰瘀阻络型PSCI患者临床症状,安全有效,其疗效机制可能与调控BDNF通路,抑制神经细胞凋亡有关。

关键词：卒中认知功能障碍痰瘀阻络证化痰通络汤 BDNF通路 B细胞淋巴瘤因子 Bcl-2相关X蛋白核转录因子κB

在线全文

学校读者我要写书评

暂无评论

防渗型雨水花园在海绵城市建设中的应用

工程技术研究 2024年第12期9卷 37-40页

作者：梁慧刘文昌武孟陕西华山路桥集团有限公司陕西西安710016 陕西正诚路桥工程研究院有限公司陕西西安710086

防渗型雨水花园是通过在其底部增设高密度聚乙烯(HDPE)膜防止雨水下渗,设计多层渗透结构和透水盲管,实现雨水净化和收集。文章针对城市内涝和径流污染等问题,分析了防渗型雨水花园的典型应用场景和施工工艺,旨在为后续防渗型海绵城市设... 详细信息

防渗型雨水花园是通过在其底部增设高密度聚乙烯(HDPE)膜防止雨水下渗,设计多层渗透结构和透水盲管,实现雨水净化和收集。文章针对城市内涝和径流污染等问题,分析了防渗型雨水花园的典型应用场景和施工工艺,旨在为后续防渗型海绵城市设施建设提供参考。

关键词：雨水花园 HDPE膜防渗邻近建筑屋顶花园

人口老龄化背景下智慧医疗助老服务体系现状及策略研究

在线全文

学校读者我要写书评

暂无评论

中国医院 2024年第5期28卷 81-83页

作者：邵倩王磊魏敏梁慧邹慕蓉于翠婷南京大学医学院附属口腔医院南京市口腔医院南京大学口腔医学研究所江苏省南京市210008

智慧医疗发展迅猛,“互联网+医疗”逐渐成为医疗体系发展的主要业态。关注老年群体在信息化时代下就医的触点、痛点与难点,构建适应于老年人就医服务体系,并通过实践来验证成效,全面提升老年人在智慧化高速发展下的就医体验,提升就医意... 详细信息

智慧医疗发展迅猛,“互联网+医疗”逐渐成为医疗体系发展的主要业态。关注老年群体在信息化时代下就医的触点、痛点与难点,构建适应于老年人就医服务体系,并通过实践来验证成效,全面提升老年人在智慧化高速发展下的就医体验,提升就医意愿。运用服务设计理念制定针对老年人就医的服务流程,弱化因智能化设备及信息化流程繁复在就医中造成的阻碍,创新多种助老的特色服务模式,提供多元化、多模式、更精准的医疗服务,加强老年人医疗保障,优化就医环境,为老年人提供便利的医疗服务体系是提升就医体验举措中的必然选择。在给老年人提供优质医疗保障的同时,带来深层次人文关怀,对于社会和谐稳定发展具有深远的意义。

关键词：人口老龄化智慧医疗助老服务体系

Variability and trends in land surface longwave radiation fluxes from six satellite and reanalysis products

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

International Journal of Digital Earth 2023年第1期16卷 2912-2940页

作者： Jianglei Xu Shunlin liang Tao He HanMab Yufang Zhang Guodong Zhang hui liang School of Remote Sensing and Information Engineering Wuhan UniversityWuhanPeople’s Republic of China Department of Geography University of Hong KongHong KongPeople’s Republic of China

Earth surface longwave radiation(SLR),including downward(DLR),upward(ULR),and net longwave radiation(NLR),significantly impacts the surface radiation budget and global climate ***,the spatiotemporal variation in SLR remains poorly *** this study,three satellite products(GLASS-MODIS V40,GLASS-AVHRR,and CERES-SYN)and three reanalysis datasets(ERA5,MERRA-2,and GLDAS)were validated using ground measurements from 288 sites at seven observation *** mean biases and root mean square errors of the monthly DLR(ULR,NLR)estimates from the six products were-6.36(-3.56,-2.86)Wm^(-2) and 16.63(14.33,13.38)Wm^(-2),*** differences in the spatial distribution of the SLR were mainly observed at high-latitude,high-altitude and desert/barren-covered *** interannual variability was detected at high ***-AVHRR and ERA5 better captured the long-term variability in DLR and ULR,whereas GLASS-AVHRR and MERRA-2 better detected trends in *** increasing trend in DLR and ULR was observed between 1982 and 2015,followed by a decreasing trend from 2016 to 2021;the NLR flux did not exhibit a significant ***,the GLASS-AVHRR and ERA5 SLR estimates were more accurate and stable than those of the,other products in accuracy,spatiotemporal distribution,and trend analysis.

关键词： Surfacelongwaveradiation satellite remote sensing spatiotemporal distributions annual mean value long-term variability

1991—2019年青岛市中小学生肺活量动态变化及城乡差异分析

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

中国初级卫生保健 2024年第9期38卷 66-69页

作者：刘艳刘同祥梁辉殷凡刘辉陈暕青岛市疾病预防控制中心/青岛市预防医学研究院山东青岛266000 青岛市城阳区疾病预防控制中心山东青岛266000 青岛市预防医学会山东青岛266000

目的:了解青岛市中小学生肺活量动态变化趋势和城乡差异,为制定增进青少年体质健康的干预策略提供参考。方法:采用1991年、2000年、2010年、2019年全国学生体质健康调研中青岛市的数据,对7~17岁中小学生肺活量近30年的动态变化及城乡差... 详细信息

目的:了解青岛市中小学生肺活量动态变化趋势和城乡差异,为制定增进青少年体质健康的干预策略提供参考。方法:采用1991年、2000年、2010年、2019年全国学生体质健康调研中青岛市的数据,对7~17岁中小学生肺活量近30年的动态变化及城乡差异进行分析。结果:1991—2019年,青岛市7~17岁男生平均肺活量上升270.8 mL,女生平均肺活量下降184.9 mL。1991年城市学生平均肺活量较乡村学生低174.0 mL,2000年较乡村学生高105.7 mL,2010年较乡村学生低4.2 mL,2019年较乡村学生高81.5 mL。结论:近30年来,青岛市中小学生肺活量呈现先下降后上升的趋势,2019年较1991年,男生肺活量上升,女生肺活量下降;城市和乡村学生肺活量交替领先,城乡差异依然存在,应针对不同性别、年龄段的学生制定相应干预策略以提升学生肺活量水平,重视乡村学校体育课,进一步缩小城乡差距。

关键词：中小学生肺活量动态变化城乡差异