检索结果-南通市图书馆

Contribution of precursor compounds to the release of per-and polyfluoroalkyl substances(PFASs) from waste water treatment plants(WWTPs)

引用

Journal of Environmental Sciences 2017年第11期29卷 80-90页

作者： Ulrika Eriksson Peter haglund Anna K?rrman Man-Technology-Environment (MTM) Research Centre School of Science and Technology ?rebro University department of Chemistry Umea University

Per-and polyfluoroalkyl substances（PFASs） are ubiquitous in sludge and water from waste water treatment plants, as a result of their incorporation in everyday products and industrial processes. In this study, we measured several classes of persistent PFASs,precursors, transformation intermediates, and newly identified PFASs in influent and effluent sewage water and sludge from three municipal waste water treatment plants in Sweden, sampled in 2015. For sludge, samples from 2012 and 2014 were analyzed as *** of precursors in sludge exceeded those of perfluoroalkyl acids and sulfonic acids（PFCAs and PFSAs）, in 2015 the sum of polyfluoroalkyl phosphoric acid esters（PAPs） were 15–20 ng/g dry weight, the sum of fluorotelomer sulfonic acids（FTSAs） was 0.8–1.3 ng/g,and the sum of perfluorooctane sulfonamides and ethanols ranged from non-detected to 3.2 ng/g. Persistent PFSAs and PFCAs were detected at 1.9–3.9 ng/g and 2.4–7.3 ng/g dry weight, respectively. The influence of precursor compounds was further demonstrated by an observed substantial increase for a majority of the persistent PFCAs and PFSAs in water after waste water treatment. Perfluorohexanoic acid（PFHxA）, perfluorooctanoic acid（PFOA）, perfluorohexane sulfonic acid（PFHxS）, and perfluorooctane sulfonic acid（PFOS）had a net mass increase in all WWTPs, with mean values of 83%, 28%, 37% and 58%,respectively. The load of precursors and intermediates in influent water and sludge combined with net mass increase support the hypothesis that degradation of precursor compounds is a significant contributor to PFAS contamination in the environment.

关键词： diPAPs FTSAs Waste water Daily discharge PFCA precursor

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

Helicobacter pylori infection and low serum pepsinogen I level as risk factors for gastric carcinoma

引用

World Journal of Gastroenterology 2005年第7期11卷 1032-1036页

作者： Arto Kokkola Johanna Louhimo Pauli Puolakkainen Henrik Alfthan Caj haglund Hilpi Rautelin department of Surgery department of Clinical Chemistry department of Bacteriology and Immunology

AIM: To study whether examination of CagA antibodies could increase the odds ratio for gastric cancer in a casecontrol study, and how often other serum markers of gastric cancer risk could be found in Helicobacter pylori-negative patients. METHODS: H pylori CagA and parietal cell antibodies (PCAs), and serum pepsinogen I (SPGI) levels were compared between patients with gastric cancer and controls who received endoscopic examination due to reasons other than gastrointestinal malignancy. RESULTS: The odds ratio (OR) for gastric cancer was 2.9 (95% CI 1.4-5.8) in H pylori + patients, and 2.4 (95% CI 1.2-4.9) in CagA+ patients. When results of H pylori and CagA antibodies were combined, OR increased to 5.0 (95% CI 2.5-10.0). Furthermore, if cardia cancer patients were excluded, the OR increased to 6.8 (95% CI 3.1-14.8). Among patients with a low SPGI level, the OR was 12.0 (95% CI 4.1-35.3). However, the risk was significant only in the older age group. The number of patients with low SPGI was significantly higher in H pylori -/CagA+ patients as compared to other cancer patients. CONCLUSION: Examination of both H pylori and CagA antibodies increases the OR for gastric cancer in our casecontrol study. CagA antibodies are important in detecting previous H pylori infection in advanced atrophic gastritis or cancer when spontaneous decline of H pylori antibodies occurs. SPGI may be helpful in screening elderly gastric cancer patients.

关键词： Gastric cancer Risk factor Atrophic gastritis

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

Low trypsinogen-1 expression in pediatric ulcerative colitis patients who undergo surgery

引用

World Journal of Gastroenterology 2013年第21期19卷 3272-3280页

作者： Maija Piekkala Jaana Hagstrm Maarit Tanskanen Risto Rintala Caj haglund Kaija-Leena Kolho Children's Hospital University of HelsinkiFIN-00029 HUSHelsinkiFinland department of Pathology Haartman InstituteUniversity of HelsinkiFIN-00029 HUS HelsinkiFinland department of Surgery Helsinki University Central HospitalFIN-00029 HUS HelsinkiFinland

AIM: To investigate whether matrix metalloproteinases-9 (MMP-9) or trypsinogens could serve as histological markers for an aggressive disease course in pediatric ulcerative colitis (UC). METHODS: We identified 24 patients with pediatric onset (≤ 16 years) UC who had undergone surgery during childhood/adolescence a median of 2.1 years (range 0.1-7.4 years) after the diagnosis (between 1990 and 2008) in Children's Hospital, Helsinki, Finland. We also identified 27 conservatively treated UC patients and matched them based on their age at the time of diagnosis and follow-up at a median of 6 years (range 3-11 years) to serve as disease controls. Twenty children for whom inflammatory bowel disease (IBD) had been excluded as a result of endoscopy served as non-IBD controls. Colon biopsies taken by diagnostic endoscopy before the onset of therapy were stained using immunohistochemistry to study the expression of MMP-9, trypsinogen-1 (Tryp-1), Tryp-2, and a trypsin inhibitor (TATI). The profiles of these proteases and inhibitor at diagnosis were compared between the surgery group, the conservatively treated UC patients and the non-IBD controls. RESULTS: The proportions of Tryp-1 and Tryp-2 positive samples in the colon epithelium and in the inflammatory cells of the colon stroma were comparable between the studied groups at diagnosis. Interestingly, the immunopositivity of Tryp-1 (median 1; range 0-3) was significantly lower in the epithelium of the colon in the pediatric UC patients undergoing surgery when compared to that of the conservatively treated UC patients (median 2; range 0-3; P = 0.03) and non-IBD controls (median 2; range 0-3; P = 0.04). For Tryp-2, there was no such difference. In the inflammatory cells of the colon stroma, the immunopositivities of Tryp-1 and Tryp-2 were comparable between the studied groups at diagnosis. Also, the proportion of samples positive for TATI, as well as the immunopositivity, was comparable between the studied groups in the colon ep

关键词： Children Ulcerative colitis Inflammatory bowel disease Matrix metalloproteinase-9 resection Trypsin inhibitor

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

Quality of life following laparoscopic nissen fundoplication: Assessing short-term and long-term outcomes

引用

World Journal of Gastroenterology 2013年第24期19卷 3810-3818页

作者： Ilmo Kellokumpu Markku Voutilainen Caj haglund Martti Frkkil Peter J Roberts Hannu Kautiainen department of Surgery Central Hospital of Central Finland40620 Jyvskyl Finland department of Gastroenterology Central Hospital of Central Finland40620 Jyvskyl Finland department of Surgery Helsinki University Central Hospital Division of Gastroenterology Department of Internal Medicine Helsinki University Central Hospital department of Surgery Turku University Hospital Biostatistician Unit of Primary Health Care Helsinki University Hospital department of General Practice Primary Health Care Unit Turku University Hospital

AIM: To investigate the quality of life following lapa-roscopic nissen fundoplication by assessing short-term and long-term outcomes. METHODS: From 1992 to 2005, 249 patients under-went laparoscopic nissen fundoplication. Short-term outcome data including symptom response, side effects of surgery, endoscopy, and patient's perception of over-all success were collected prospectively. Long-term out-comes were investigated retrospectively in patients witha median follow-up of 10 years by assessment of reflux symptoms, side effects of surgery, durability of antire-flux surgery, need for additional treatment, patient's perception of success, and quality of life. Antireflux sur-gery was considered a failure based on the following criteria: moderate to severe heartburn or regurgitation; moderate to severe dysphagia reported in combination with heartburn or regurgitation; regular proton pump inhibitor medication use; endoscopic evidence of erosive esophagitis Savary-Miller grade 1-4; pathological 24-h pH monitoring; or necessity to undergo an additional surgery. The main outcome measures were short-and long-term cure rates and quality of life, with patient sat-isfaction as a secondary outcome measure. RESULTS: Conversion from laparoscopy to open sur-gery was necessary in 2.4% of patients. Mortality was zero and the 30-d morbidity was 7.6% (95%CI: 4.7%-11.7%). The median postoperative hospital stay was 2 d [interquartile range (IQR) 2-3 d]. Two hundred and forty-seven patients were interviewed for short-term analysis following endoscopy. Gastro-esophageal reflux disease was cured in 98.4% (95%CI: 95.9%-99.6%) of patients three months after surgery. New-onset dysphagia was encountered postoperatively in 13 patients (6.7%); 95% reported that the outcome was better after antireflux surgery than with preopera-tive medical treatment. One hundred and thirty-nine patients with a median follow-up of 10.2 years (IQR 7.2-11.6 years) were available for a long-term evalu-ation. Cumulativ

关键词： Laparoscopy nissen fundoplication Long-term outcome Antireflux Gastrointestinal symptom rating scores RAND-36

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

Carbonic anhydrase enzymes Ⅱ, Ⅶ, Ⅸ and Ⅻ in colorectal carcinomas

引用

World Journal of Gastroenterology 2016年第36期22卷 8168-8177页

作者： Pia Viikil? Antti J Kivel? Harri Mustonen Selja Koskensalo Abdul Waheed William S Sly Jaromir Pastorek Silvia Pastorekova Seppo Parkkila Caj haglund School of Medicine University of Tampere and Fimlab Ltd Tampere University Hospital department of Surgery University of Helsinki and Helsinki University Hospital department of Biochemistry and Molecular Biology Saint Louis University School of Medicine Centre of Molecular Medicine Institute of Virology Slovak Academy of Sciences Research Programs Unit Translational Cancer Biology University of Helsinki

AIM To investigate expression of four alpha-carbonic anhydrases(CAs) in colorectal carcinomas(CRC) and compare the results with patients' *** Colorectal carcinoma samples from 539 CRC patients and control tissues were arranged as tissue microarrays and analyzed with antibodies against CA Ⅱ, CA Ⅶ, CA Ⅸ, and CA Ⅻ. Intensity and extent of staining were both scored from 0 to 3 in each sample. These enzyme expression levels were then correlated to patients' survival and clinicopathological parameters, which were tumor differentiation grade and stage, site of tumor, patients' age, and gender. Kaplan-Meier analysis and Cox regression hazard ratio model were used to analyze survival data. RESULTS CA Ⅱ and CA Ⅻ staining intensities correlated with patients' survival in that higher expression indicated poorer prognosis. In Cox regression analysis one unit increase in the CA Ⅱ intensity increased the hazard ratio to 1.19 fold(CI: 1.04-1.37, P = 0.009). A significant correlation was also found when comparing CA Ⅻ staining intensity with survival of CRC patients(HR = 1.18, 95%CI: 1.01-1.38, P = 0.036). The extent of CA Ⅻ immunostaining did not correlate to the patients' survival(P = 0.242, Kaplan-Meier analysis). A significant interaction between age group and extent of the CA Ⅱ staining was found. Increased extent of CA Ⅱ had a significant hazard ratio among patients 65 years and older(1.42, 95%CI: 1.16-1.73, P = 0.0006). No correlations were found between CA Ⅶ(intensity P = 0.566, extent P = 0.495, Kaplan-Meier analysis), or CA Ⅸ(intensity P = 0.879, extent P = 0.315, KaplanMeier analysis) immunostaining results and survival, or the other parameters. CONCLUSION The present findings indicate that CA Ⅱ and CA Ⅻ could be useful in predicting survival in CRC.

关键词： Biomarker Carbonic anhydrase Colorectal cancer Immunohistochemistry Prognosis Survival

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

主体间性心理治疗

引用

作者： (美)博斯克 (美)Pamela·haglund

来源：南通市图书馆图书评论

学校读者我要写书评

暂无评论

Spatially and spectrally resolved orbital angular momentum interactions in plasmonic vortex generators

引用

Light(Science & Applications) 2019年第1期8卷 907-915页

作者： Jordan A.Hachtel Sang-Yeon Cho Roderick B.Davidson II Matthew A.Feldman Matthew F.Chisholm Richard F.haglund Juan Carlos Idrobo Sokrates T.Pantelides Benjamin J.Lawrie Center for Nanophase Materials Science Oak Ridge National LaboratoryOak RidgeTN 37831USA Klipsch School of Electrical and Computer Engineering New Mexico State UniversityLas CrucesNM 88003USA department of Physics and Astronomy Vanderbilt UniversityNashvilleTN 37235USA Quantum Information Science Group Oak Ridge National LaboratoryOak RidgeTN 37831USA Materials Science and Technology Division Oak Ridge National LaboratoryOak RidgeTN 37831USA department of Electrical Engineering and Computer Science Vanderbilt University NashvilleNashvilleTN 37235USA Chemistry Division U.S.Naval Research LaboratoryWashingtonD.C.20375USA

Understanding the near-field electromagnetic interactions that produce optical orbital angular momentum(OAM)is crucial for integrating twisted light into ***,we examine the cathodoluminescence(CL)of plasmonic vortices carrying OAM generated in spiral *** nanospiral geometry defines a photonic local density of states that is sampled by the electron probe in a scanning transmission electron microscope(STEM),thus accessing the optical response of the plasmonic vortex with high spatial and spectral *** map the full spectral dispersion of the plasmonic vortex in spiral structures designed to yield increasing topological ***,we fabricate nested nanospirals and demonstrate that OAM from one nanospiral can be coupled to the nested nanospiral,resulting in enhanced luminescence in concentric spirals of like handedness with respect to concentric spirals of opposite *** results illustrate the potential for generating and coupling plasmonic vortices in chiral nanostructures for sensitive detection and manipulation of optical OAM.

关键词： momentum spectral angular

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

被多氯二苯并二恶英/呋喃以及其它多氯代芳香化合物污染土壤的处理方法

引用

AMBIO－人类环境杂志 2007年第6期36卷 445-451页

作者： Peter haglund 王大伟于默奥大学

本文综述了处理被多氯代芳香化合物,尤其是被二恶英和呋喃(PCDD/Fs)污染土壤的方法。与其它土壤污染物所不同的是PCDD/Fs与土壤颗粒紧密结合,这严重削弱了大多数水处理过程的效果,也使得除传统方法以外(填埋法、固化/稳定化、原位玻璃... 详细信息

本文综述了处理被多氯代芳香化合物,尤其是被二恶英和呋喃(PCDD/Fs)污染土壤的方法。与其它土壤污染物所不同的是PCDD/Fs与土壤颗粒紧密结合,这严重削弱了大多数水处理过程的效果,也使得除传统方法以外(填埋法、固化/稳定化、原位玻璃化技术)没有几种切合实际的选择方案。焚化法的应用时间很长,并且仍是最有效的处理技术,清除效率超过99.9999%。但是超临界水氧化法、碱性催化分解法、蒸馏法和其它多种萃取技术的清除效率也可超过95%,例如溶剂和液化气体以及亚临界水提取等。这些替代技术中的很多种可能比焚化法更廉价,有可能适用于被二恶英中度污染的土壤。然而,许多方法仍然处于发展初期,需要进行更多的试验评估其真正的潜力。

关键词：多氯二苯并二恶英氯代芳香化合物污染土壤呋喃玻璃化技术 PCDD/Fs 超临界水氧化法清除效率

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

Risk factors for hepatocellular carcinoma in cirrhosis due to nonalcoholic fatty liver disease: A multicenter, case-control study

引用

World Journal of Hepatology 2017年第7期9卷 385-390页

作者： Kathleen E Corey Samer Gawrieh Andrew S deLemos Hui Zheng Andrew E Scanga Jennifer W haglund Jorge Sanchez Christopher J Danford Megan Comerford Krista Bossi Samina Munir Naga Chalasani Julia Wattacheril department of Medicine Gastrointestinal UnitMassachusetts General HospitalHarvard Medical School department of Medicine Division of GastroenterologyIndiana University School of Medicine department of Medicine Division of GastroenterologyCarolinas Medical Center department of Medicine Division of GastroenterologyVanderbilt University School of Medicine department of Medicine Division of GastroenterologyColumbia University College of Physicians and SurgeonsNew York Presbyterian Hospital

AIM To identify risk factors associated with hepatocellular carcinoma(HCC), describe tumor characteristics and treatments pursed for a cohort of individuals with nonalcoholic steatohepatitis(NASH) cirrhosis. METHODS We conducted a retrospective case-control study of a well-characterized cohort of patients among five liver transplant centers with NASH cirrhosis with(cases) and without HCC(controls).RESULTS Ninety-four cases and 150 controls were included. Cases were significantly more likely to be male than controls(67% vs 45%, P der age(61.9 years vs 58 years, P = 0.002). In addition, cases were more likely to have had complications of end stage liver disease(83% vs 71%, P = 0.032). On multivariate analysis, the strongest association with the presence of HCC were male gender(OR 4.3, 95%CI: 1.83-10.3, P = 0.001) and age(OR = 1.082, 95%CI: 1.03-1.13, P = 0.001). Hispanic ethnicity was associated with a decreased prevalence of HCC(OR = 0.3, 95%CI: 0.09-0.994, P = 0.048). HCC was predominantly in the form of a single lesion with regional lymph node(s) and distant metastasis in only 2.6% and 6.3%, respectively. Fifty-nine point three percent of individuals with HCC underwent locoregional therapy and 61.5% underwent liver transplantation for HCC. CONCLUSION Male gender, increased age and non-Hispanic ethnicity are associated with HCC in NASH cirrhosis. NASH cirrhosis associated HCC in this cohort was characterized by early stage disease at diagnosis and treatment with locoregional therapy and transplant.

关键词： Hepatocellular carcinoma Nonalcoholic fatty liver disease Cirrhosis Gender Ethnicity

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

Aetiology of Tick-Borne Infections in an Adult Swedish Population—Are Co-Infections with Multiple Agents Common?

引用

Open Journal of Clinical Diagnostics 2014年第1期4卷 31-40页

作者： Marika Nordberg Pia Forsberg Johan Berglund Anneli Bjoersdorff Jan Ernerudh Ulf Garpmo Mats haglund Kenneth Nilsson Ingvar Eliasson Infectious Medicine Department of Clinical and Experimental MedicineFaculty of Health SciencesLinkoping UniversityLinkopingSweden department of Infectious Diseases County Council of OstergotlandLinkopingSweden Blekinge Institute of Technology School of Health ScienceKarlskronaSweden Djursjukhusgruppen DanderydSweden Clinical Immunology Department of Clinical and Experimental MedicineFaculty of Health SciencesLinkoping UniversityDepartment of Clinical Immunology and Transfusion MedicineCounty Council of OstergotlandLinkopingSweden department of Clinical Microbiology Kalmar County HospitalKalmarSweden department of Infectious Diseases Kalmar County HospitalKalmarSweden Unit of Clinical Microbiology/Infectious Diseases Department of Medical SciencesUppsala UniversityUppsalaSweden department of Laboratory Medicine Norra Alvsborg County HospitalTrollhattanSweden

In Scandinavia, tick-borne infections affecting humans include Lyme borreliosis (LB), tick-borne encephalitis (TBE) and human granulocytic anaplasmosis (HGA). Each of these infections can present with unspecific symptoms. In this prospective clinical study, we recruited patients based on two independent inclusion criteria;1) patients with unspecific symptoms, i.e. fever (≥38.0℃) or a history of feverishness and/or any combination of headache, myalgia or arthralgia and 2) patients with erythema migrans (EM), following an observed tick bite or tick exposure within one month prior to onset of symptoms. A total of 206 patients fulfilled the study. Among these, we could identify 186 cases of LB (174 with EM), 18 confirmed and two probable cases of HGA and two cases of TBE. Thirteen of the HGA cases presented without fever. Furthermore, 22 of the EM patients had a sub-clinical co-infection with Anaplasma phagocytophilum, based on serology. Both TBE cases had co-infections, one with Borrelia burgdorferi and one with Anaplasma phagocytophilum. We conclude that it is important to consider several causative agents and possible co-infections in the clinical management of infectious diseases where ticks may be suspected as vectors.

关键词： Epidemiology Tick-Borne Infections Tick-Borne Encephalitis Lyme Borreliosis Human Granulocytic Anaplasmosis

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

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

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

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：