Integrated Ultrafiltration Membrane Unit for Efficient Petroleum Refinery Effluent Treatment     

《洁净——土壤、空气、水》2017,45(2)

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Nutrient Recovery from Domestic Effluent using an Indigenous Strain of Scenedesmus sp.          下载免费PDF全文

Radin Maya Saphira Radin Mohamed  Adel Al‐Gheethi  Ramlah Buyong  Nor Haslina Hashim  Hazel Monica Matias‐Peralta  Amir‐Hashim Mohd‐Kassim 《洁净——土壤、空气、水》2018,46(8)

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Treatment of Crystal Violet from Synthetic Solution Using Membranes Doped with Natural Fruit Extract          下载免费PDF全文

Simona Caprarescu  Alexandra R. Miron  Violeta Purcar  Anita‐Laura Radu  Andrei Sarbu  Cristian Andi Nicolae  Mihaela Pascu  Daniela Ion‐Ebrasu  Valentin Raditoiu 《洁净——土壤、空气、水》2018,46(7)

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Metagenomic Analysis of Bacterial Communities from a Nitrification–Denitrification Treatment of Landfill Leachates     

Ana Isabel Díaz  Paula Oulego  Adriana Laca  Jos Manuel Gonzlez  Mario Díaz 《洁净——土壤、空气、水》2019,47(11)

The efficiency of the biological removal of carbon and nitrogen from leachates is determined by the activity of microbial populations present in biological reactors. In this work, a complete characterization of bacterial communities revealed by personal genome machine sequencing (PGM) has been carried out from different points of a nitrification–denitrification process operated in an urban landfill. The leachate fed to the treatment is a mixture of young leachate, old leachate, and effluent from an anaerobic digestion process, in a volume ratio of 1:0.9:0.12, respectively. The anoxic and oxic reactors are followed by an ultrafiltration step. Samples are taken from different points of the process. Results reveal the microbial diversity of the samples, which include detection of minority populations that are difficult to explore by other methods. Bacteria belonging to Bacteroidetes and Proteobacteria are dominant in all the samples analyzed. Proteobacteria represents more than 50% of the total population in all cases. Samples taken after the biological treatment show a significant reduction in the relative abundance of Firmicutes, Tenericutes, and Lentisphaerae phyla in comparation with the initial leachate. The relative abundance of the classes is also studied and the most abundant in the samples are β‐Proteobacteria and Flavobacteria.  相似文献   

基于数据挖掘分析中医药改善晚期恶性肿瘤患者食欲减退的用药规律          下载免费PDF全文

李行远  郑蔚婵  李辉 《应用海洋学学报》2024,40(5):24

目的：基于数据挖掘分析中医药改善晚期恶性肿瘤患者食欲减退的用药规律。方法：检索自建库至2023年12月4日中国知网（CNKI）、万方数据（WANFANG DATA）、维普中文科技期刊数据库（VIP）、PubMed等有关中医药改善晚期恶性肿瘤患者食欲减退的文献,分析文献处方中的药物使用频次、功效、性味归经、药物配伍、聚类、复杂网络分析等。结果：共纳入处方61首,包含药物158味,药物使用频次排名前5位的依次为白术、茯苓、陈皮、党参、甘草;功效以补虚为主,其次为理气、消食、清热、利水、化痰;药性以温、平性为主;药味以甘、辛、苦味为主;归经以脾、肺、胃经为主;药物配伍显示白术、党参、茯苓、陈皮、甘草、砂仁之间的配伍最为频繁;聚类分析得到6组聚类组合;复杂网络分析显示四君子汤、六君子汤为核心处方。结论：晚期恶性肿瘤患者食欲减退的病因主要在于脾胃功能受损以及痰凝、食积、水停等,治疗上需兼顾健脾、益气、燥湿、化痰、消食、利水等,并注重补而不滞,疏而不损。  相似文献   

注浆加固技术在局部地基处理中的应用     

付亦鹏  杜军  于波 《海岸工程》2006,25(2):67-72

结合工程实例,介绍了压力注浆技术在局部软弱地基处理中的作用原理,对施工过程及其质量控制作了阐述,并对加固效果进行了检测及分析。  相似文献   

疏血通脉汤治疗卒中后偏瘫肢体血栓性肿胀30 例临床观察          下载免费PDF全文

张元侃  高玉广  黄树武 《应用海洋学学报》2020,36(7):11

目的：观察疏血通脉汤对卒中后偏瘫肢体血栓性肿胀的临床疗效。方法：将60 例脑卒中后偏瘫肢体血栓性肿胀患者随机分为2组,每组各30例。对照组采用西医常规治疗联合功能训练,治疗组在对照组基础上加用疏血通脉汤治疗。比较2组的综合疗效及治疗前后患侧肢体周径的变化。结果：总有效率治疗组为90.00%（27/30）,对照组为80.0%（24/30）,2组比较,差异有统计学意义（P<0.05）;治疗2、4周后治疗组患侧肢体上、下肢周径均小于对照组,差异有统计学意义（P<0.05）。结论：疏血通脉汤可以改善卒中后偏瘫肢体血栓性肿胀,提高临床综合疗效。  相似文献   

牙膏用六水氯化锶的制备          下载免费PDF全文

曹晓会  段东平  郑红 《盐湖研究》2019,27(3)

以不同纯度的自制氢氧化锶为原料与盐酸充分反应，经提纯、结晶，制备六水氯化锶（SrCl2·6H2O）。通过X射线衍射（XRD）和场发射扫描电子显微镜（FESEM）对SrCl2·6H2O的结构、形貌进行表征，通过能谱仪（EDS）和差热-热重分析仪（TG）对SrCl2·6H2O进行元素含量和热失重分析，并将制备的样品与中华人民共和国化工行业牙膏用氯化锶标准进行对比。结果表明，高纯氢氧化锶与分析纯盐酸制备的SrCl2·6H2O可以达到牙膏用标准。  相似文献   

Ship board testing of a deoxygenation ballast water treatment   总被引：2，自引：1，他引：1  

McCollin T  Quilez-Badia G  Josefsen KD  Gill ME  Mesbahi E  Frid CL 《Marine pollution bulletin》2007,54(8):1170-1178

A ship board trial of a deoxygenation method for treating ballast water was carried out during a voyage from Southampton (United Kingdom) to Manzanillo (Panama). A nutrient solution added to two ballast tanks encouraged bacterial growth, resulting in a gradual change to an anoxic environment. Samples were taken from two treated tanks and two untreated tanks to assess changes in the abundance and viability of zooplankton, phytoplankton and bacteria. The work was carried out before the International Maritime Organization (IMO) standard was agreed so only a broad indication of whether the results achieved the standard was given. For the zooplankton, the standard would have been achieved within 5 or 7 days but the phytoplankton results were inconclusive. The biological efficacy was the result of the combination of several factors, including the treatment, pump damage and an increase in the water temperature during the voyage.  相似文献   

福建省矿山地质环境现状及发展趋势分析     

江峰 《中国地质灾害与防治学报》2010,21(2):44-49

近年来,矿山地质环境问题受到越来越多地质环境工作者的关注,开展矿山地质环境监测,摸清矿山地质环境现状是我国矿山地质环境管理工作的迫切需要。本文通过对矿山地质环境调查与"2009年度福建省矿山地质环境动态监测报表"的统计分析,阐述了福建省矿山存在的主要地质环境现状特征,总结了福建省矿山地质环境治理恢复的措施与成效,对福建省矿山地质环境发展趋势进行了预测,本文并不认同福建省矿山地质环境问题日益严重的思维定势,认为福建省矿山地质环境问题将进入平稳发展阶段,但将在福建经济的高速发展阶段长期存在,局部矿区地质环境问题仍将呈增长趋势。为福建省矿山地质环境保护与整治提供了背景资料。  相似文献