检索结果-南通市图书馆

The variation of dOM during long distance water transport by the China South to North Water diversion Scheme and impact on drinking water treatment

引用

Frontiers of Environmental Science & Engineering 2024年第5期18卷 85-100页

作者： Hankun Yang Yujuan Li Hongyu Liu nigel j.d.graham Xue Wu jiawei Hou Mengjie Liu Wenyu Wang Wenzheng Yu State Key Laboratory of Environmental Aquatic Chemistry Key Laboratory of Drinking Water Science and TechnologyResearch Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing100085China School of Environment and Municipal Engineering Qingdao Technological UniversityQingdao266033China Colleges of Forestry Northeast Forestry UniversityHarbin150006China department of Civil and Environmental Engineering Imperial College LondonSouth Kensington CampusLondonSW7 2AZUK School of Chemistry and Chemical Engineering Beijing Institute of TechnologyBeijing100081China State Key Laboratory of Separation Membrane Processes School of Environment Science and EngineeringTiangong UniversityTianjin300387China

In this study,samples were taken from three locations,upstream to downstream,along the central route project of the China South to North Water diversion(SNWd)scheme in summer and *** were used to reveal the variations of dissolved organic matter(dOM)during the water transfer process,and the effects of these variations on drinking water treatment and disinfection by-products formation potential(dBPs-FP).The results showed that polysaccharides accumulate in summer and reduce in winter with flow distance,which has an important effect on the overall properties of dOM,as well as on the performance of coagulation,ultrafiltration,and the formation of *** substances,and their hydrophilic content,also increased in summer and decreased in winter with flow *** contrast,the concentration of small organic substances(MW≤1000 da)increased in both summer and winter with flow distance,which affected both nanofiltration(NF)membrane fouling and *** results provide a useful case study of spatial and temporal changes in raw water dOM during long distance water transfer and their impact on the treatment and quality of drinking water from the SNWd.

关键词： Long-distance water transfer The China South to North Water diversion Scheme Coagulation Membrane filtration disinfection by-products

来源：

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

Etiology and management of urethral calculi:A systematic review of contemporary series

引用

Asian journal of Urology 2024年第1期11卷 10-18页

作者： Andrew Morton Arsalan Tariq nigel dunglison Rachel Esler Matthew j.Roberts Faculty of Medicine The University of QueenslandBrisbaneQueenslandAustralia department of Urology Ipswich HospitalQueenslandAustralia department of Urology Royal Brisbane and Women's HospitalQueenslandAustralia The University of Queensland Centre for Clinical Research HerstonAustralia

Objective:To conduct a systematic literature review on urethral calculi in a contemporary cohort describing etiology,investigation,and management ***:A systematic search of MEdLINE and Cochrane Central Register of Controlled Trials(CENTRAL)databases was ***,including case reports and case series on urethral calculi published between january 2000 and december 2019,were ***-text manuscripts were reviewed for clinical parameters including symptomatology,etiology,medical history,investigations,treatment,and *** were collated and analyzed with univariate ***:Seventy-four publications met inclusion criteria,reporting on 95 *** symptoms(41.1%),pain(40.0%),and acute urinary retention(32.6%)were common presenting *** calculi were most often initially investigated using plain X-ray(63.2%),with almost all radio-opaque(98.3%).Urethral calculi were frequently associated with coexistent bladder or upper urinary tract calculi(16.8%)and underlying urethral pathology(53.7%)including diverticulum(33.7%)or stricture(13.7%).Urethral calculi were most commonly managed with external urethrolithotomy(31.6%),retrograde manipulation(22.1%),and endoscopic in situ lithotripsy(17.9%).Conclusion:This unique systematic review of urethral calculi provided a summary of clinical features and treatment trends with a suggested treatment *** in contemporary urological practice should be according to calculus size,shape,anatomical location,and presence of urethral pathology.

关键词： Urinary calculi Urethra Urethral calculi Management algorithm

来源：

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

Unraveling Membrane Fouling Induced by Chlorinated Water Versus Surface Water:Biofouling Properties and Microbiological Investigation

引用

Engineering 2022年第8期8卷 154-164页

作者： Li Zhang Lei Xu nigel graham Wenzheng Yu State Key Laboratory of Environmental Aquatic Chemistry Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China University of Chinese Academy of Sciences Beijing 100049China department of Civil and Environmental Engineering Imperial College LondonSouth Kensington CampusLondon SW72AZUK

Chlorine is usually applied in the urban water treatment process to deactivate pathogens and prevent waterborne *** a pre-treatment,it remains unclear whether chlorinated water can effectively alleviate membrane fouling during ultrafiltration(UF).In this study,tap water was investigated for its effect on biofilm formation and biofouling in a gravity-driven membrane(GdM)filtration *** comparison,biofilm/biofouling with untreated surface(lake)water was studied in *** was found that more severe membrane fouling occurred with the filtration of tap water than lake water,and larger quantities of polysaccharide and extracellular dNA(edNA)were present in the tap-water biofilm than in the lake-water *** tap-water biofilm had a densely compact *** contrast,a porous,spider-like structure was observed for the lake-water biofilm,which was assumed to be associated with the bacteria in the *** hypothesis was verified by 16S ribosomal RNA(rRNA)sequencing,which demonstrated that Xanthobacter was the dominant taxon in the tap-water ***,membrane hydrophobicity/hydrophilicity played a minor role in affecting the membrane fouling properties and microbial *** study revealed the significant role of chlorine-resistant bacteria in biofouling formation and provides a deeper understanding of membrane fouling,which can potentially aid in searching for effective ways of controlling membrane fouling.

关键词： Membrane fouling Biofilm GdM filtration technology Ultrafiltration Chlorine-resistant bacteria Hydrophilicity

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Hydrogen for a Net-Zero Carbon World

引用

Engineering 2023年第10期29卷 8-10页

作者： nigel P.Brandon james j.Brandon Faculty of Engineering Imperial College LondonSouth Kensington CampusLondon SW72AZUK The First Element Ltd. London N17GUUK

*** hydrogen?The concept of the“hydrogen economy”was first coined by *** Bockris during a talk he gave in 1970 at the General Motors Technical ***’s talk introduced the vision of a world economy in which energy was... 详细信息

关键词： hydrogen Carbon economy

来源：

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

Effect and mechanism of manganate preoxidation for organics removal

引用

Science China(Technological Sciences) 2014年第6期57卷 1160-1164页

作者： REN Zhijun nigel graham College of Aerospace and Civil Engineering Harbin Engineering University department of Civil and Environmental Engineering Imperial College LondonSouth Kensington Campus

The performance and mechanism of manganate preoxidation process for organics removal were investigated in the present *** results showed that manganate was a potentially powerful oxidizing agent and could make the natural organic matter(NOM)concentration of sample solution *** process of manganate in combination with ferrous sulphate(FeMnO)was effective for organics removal and with the highest removal rate of 89%when the FeMnO dose was 0.18 mmol/*** fluorescence analysis showed that the fluorescence intensity values related to hydrophobic acids and model humic acid polymers were the highest and the relative position of the main peak fluorescence intensity was shifted towards lower emission wavelengths,which indicated the reduction in the degree of aromaticity of residual organic matter fraction.

关键词：有机物去除率氧化锰机制天然有机物质荧光分析预氧化过程强氧化剂硫酸亚铁

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Regression of recurrent granulosa cell tumor liver metastases following selective internal radiation therapy

引用

Hepatobiliary & Pancreatic diseases International 2023年第4期22卷 406-408页

作者： Omar A Mownah john d Leahy jeffrey Summers Stephen M Gregory nigel d Heaton Institute of Liver Studies King’s Healthcare PartnersKing’s College Hospital NHS Foundation TrustDenmark HillLondon SE59RSUK department of Oncology Maidstone and Tunbridge Wells NHS TrustMaidstone ME169QQUK

Granulosa cell tumor(GCT)is the most common sex cordstromal tumor,comprising 5%of all ovarian malignancies[1].The disease course is indolent,and the majority of cases present at stage ***,metastases may develop with potential sites being peritoneum,lung,brain,liver and bone[2].due to the rarity of the disease,published evidence for management of granulosa cell tumor liver metastases(GCTLM)is *** resection is the optimal treatment in instances where there is a high chance of achieving complete resection[3].With regards to unresectable GCTLM there is a paucity of evidence to guide treatment strategy.

关键词： metastases liver lung

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Minimizing the risk of small-for-size syndrome after liver surgery

引用

Hepatobiliary & Pancreatic diseases International 2022年第2期21卷 113-133页

作者： Michail Papamichail Michail Pizanias nigeld Heaton department of Hepato-Pancreato-Biliary Surgery Royal Blackburn HospitalBlackburn BB23HHUK department of General Surgery Whittington HospitalLondon N195NFUK department of Liver Transplant and Hepato-Pancreato-Biliary Surgery Institute of Liver StudiesKings Health Partners at King’s College Hospital NHS TrustLondon SE59RSUK

Background: Primary and secondary liver tumors are not always amenable to resection due to location and size. Inadequate future liver remnant(FLR) may prevent patients from having a curative resection or may result in increased postoperative morbidity and mortality from complications related to small-forsize syndrome(SFSS). data sources: This comprehensive review analyzed the principles, mechanism and risk factors associated with SFSS and presented current available options in the evaluation of FLR when planning liver surgery. In addition, it provided a detailed description of specifc modalities that can be used before, during or after surgery, in order to optimize the conditions for a safe resection and minimize the risk of SFSS. Results: Several methods which aim to reduce tumor burden, preserve healthy liver parenchyma, induce hypertrophy of FLR or prevent postoperative complications help minimize the risk of SFSS. Conclusions: With those techniques the indications of radical treatment for patients with liver tumors have signifcantly expanded. The successful outcome depends on appropriate patient selection, the individualization and modifcation of interventions and the right timing of surgery.

关键词： Small-for-size syndrome Liver resection Future liver remnant

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Pathogenicity of bacterium, Xenorhabdus nematophila isolated from entomopathogenic nematode (Steinernema carpocapsae) and its secretion against Galleria mellonella larvae

引用

journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2005年第6期6卷 457-463页

作者： MAHAR Ali Nawaz MUNIR Muhammad ELAWAd Sami GOWEN Simon Richard HAGUE nigel graham Meckenzi department of Agriculture University of Reading Reading RG6 6AT UKSchool of Plant Sciences University of Reading Reading RG6 6AS UKDepartment of Agriculture University of Reading Reading RG6 6AT UKDepartment of Agriculture University of Reading Reading RG6 6AT UKDepartment of Agriculture University of Reading Reading RG6 6AT UK

The entomopathogenic bacterium, Xenorhabdus nematophila was isolated from the hemolymph of Galleria mel- lonella infected with Steinernema carpocapsae. The bacterial cells and its metabolic secretions have been found lethal to the Galleria larvae. Toxic secretion in broth caused 95% mortality within 4 d of application whereas the bacterial cells caused 93% mortality after 6 d. When filter and sand substrates were compared, the later one was observed as appropriate. Similarly, bacterial cells and secretion in broth were more effective at 14% moisture and 25 °C temperature treatments. Maximum insect mortality (100%) was observed when bacterial concentration of 4×106 cells/ml was used. Similarly, maximum bacterial cells in broth (95%) were penetrated into the insect body within 2 h of their application. However, when stored bacterial toxic secretion was applied to the insects its efficacy declined. On the other hand, when the same toxic secretion was dried and then dissolved either in broth or water was proved to be effective. The present study showed that the bacterium, X. nematophila or its toxic secretion can be used as an important component of integrated pest management against Galleria.

关键词：生物学控制细菌共生病原菌线虫病

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Periurethral abscess etiology,risk factors,treatment options,and outcomes:A systematic review

引用

Current Urology 2023年第2期17卷 100-108页

作者： Arsalan Tariq Adam G.Stewart devang j.desai Sumudu Britton nigel dunglison Rachel Esler Matthew j.Roberts Faculty of Medicine The University of QueenslandBrisbaneQLD 4029Australia department of Urology Royal Brisbane and Women's HospitalBrisbaneQLDAustralia department of Infectious diseases Royal Brisbane and Women's HospitalBrisbaneQLDAustralia Centre for Clinical Research The University of QueenslandBrisbaneQLDAustralia department of Urology Toowoomba Base HospitalToowoombaQLDAustralia

Objectives:This study aimed to describe patterns of presentation,etiology,risk factors,management,and treatment outcomes of periurethral abscesses using a systematic review *** and methods:After prospective registration on the PROSPERO database(CRd42020193063),a systematic review of Web of Science,Embase,PubMed,and Cochrane scientific databases was *** published between 1900 and 2021 were *** data included symptoms,etiology,medical history,investigations,treatment,and *** data were analyzed using univariate ***:Sixty articles met the inclusion criteria reporting on 270 patients(211 male,59 female)with periurethral *** most common clinical features were pain(41.5%),pyuria(41.5%),dysuria(38.5%),urinary frequency(32.3%),fever(25%),and a palpable mass(23%).Predisposing risk factors included the presence of a sexually transmitted infection or urinary tract infection(55.0%),urethral strictures(39.6%),and recent urethral instrumentation(18.7%).Management approaches included open incision and drainage(64.3%),conservative management with antibiotics(29.8%),and minimally invasive techniques(needle aspiration,endoscopic drainage).Time trend analysis of etiology revealed a decreased incidence of infection(sexually transmitted infection/urinary tract infection,human immunodeficiency virus)and higher incidence of diabetes mellitus and periurethral bulking injections in recent ***:Periurethral abscesses may display a wide range of clinical ***,risk factors and underlying etiology vary with *** optimal management technique is guided by abscess *** incision and drainage combined with antibiotics continues to be the mainstay of ***,minimally invasive techniques are gaining *** the authors'knowledge,this is the first systematic appraisal and management algorithm for periurethral abscess.

关键词： Periurethral abscess Sexually transmitted infection Urethritis Urinary tract infection

来源：

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

Uncovering the genetic diversity of Giardia intestinalis in isolates from outbreaks in New Zealand

引用

Infectious diseases of Poverty 2022年第3期11卷 27-36页

作者： Paul Ogbuigwe Patrick j.Biggs juan Carlos Garcia-Ramirez Matthew A.Knox Anthony Pita Niluka Velathanthiri nigel P.French david T.S.Hayman School of Veterinary Science Massey UniversityPalmerston NorthManawatu-WanganuiNew Zealand School of Natural Sciences Massey UniversityPalmerston NorthManawatu-WanganuiNew Zealand

Background:Giardia intestinalis is one of the most common causes of diarrhoea worldwide. Molecular techniques have greatly improved our understanding of the taxonomy and epidemiology of this parasite. Co-infection with mixed (sub-) assemblages has been reported, however, Sanger sequencing is sometimes unable to identify shared subtypes between samples involved in the same epidemiologically linked event, due to samples showing multiple dominant subtypes within the same outbreak. Here, we aimed to use a metabarcoding approach to uncover the genetic diversity within samples from sporadic and outbreak cases of giardiasis to characterise the subtype diversity, and determine if there are common sequences shared by epidemiologically linked cases that are missed by Sanger ***:We built a database with 1109 unique glutamate dehydrogenase (gdh) locus sequences covering most of the assemblages of G. intestinalis and used gdh metabarcoding to analyse 16 samples from sporadic and outbreak cases of giardiasis that occurred in New Zealand between 2010 and ***:There is considerable diversity of subtypes of G. intestinalis present in each sample. The utilisation of metabarcoding enabled the identification of shared subtypes between samples from the same outbreak. Multiple variants were identified in 13 of 16 samples, with Assemblage B variants most common, and Assemblages E and A present in mixed ***:This study showed that G. intestinalis infections in humans are frequently mixed, with multiple subtypes present in each host. Shared sequences among epidemiologically linked cases not identified through Sanger sequencing were detected. Considering the variation in symptoms observed in cases of giardiasis, and the potential link between symptoms and (sub-) assemblages, the frequency of mixed infections could have implications for our understanding of host–pathogen interactions.

关键词： dNA sequencing Epidemiology Genetic diversity Giardiasis Metabarcoding

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：