检索结果-南通市图书馆

Application of Anodic Oxidation with Graphite Electrodes in Pretreated Leachates

在线全文

学校读者我要写书评

暂无评论

Open Journal of Applied Sciences 2020年第3期10卷 69-77页

作者： t.J.Sanchez-Sanchez H.A.Najera-Aguilar R.F.Gutierrez-Hernandez C.M.Garcia-Lara J.A.Araiza-Aguilar J.A.Bautista-Ramirez J.H.Castanon-Gonzalez Universidad de Ciencias y Artes de Chiapas Tuxtla GutierrezMexico Departmento de Ingenieria Quimica y Bioquimica Tecnologico Nacional de Mexico/IT de TapachulaTapachulaMexico Universidades para el Bienestar Benito Juarez Garcia Villa de AllendeEstado de MexicoMexico Department of Chemical and Biochemical Engineering Tecnologico Nacional de Mexico/IT de Tuxtla GutierrezTuxtla GutierrezMexico

Currently, landfills are the main method used for the final disposal of urban solid waste. the degradation processes that waste goes through in these sites, alongside rainwater that percolates through them, generate highly polluting liquids (leachate). In the treatment of leachate, advanced oxidation processes (AOP) can significantly reduce the concentrations of different pollutants. Due to the high documented potential around AOPs, in this study, the effectiveness of anodic oxidation in the removal of the remaining organic load in leachates pretreated in a biological system was evaluated. Graphite electrodes were used as anode and cathode. the efficiency of anodic oxidation, in terms of the removal of chemical oxygen demand (COD) and color, was evaluated under different current densities (7, 12, 17 and 22 mA/cm2) and pH values (3, 4.5 and 6). Under the best conditions found (22 mA/cm2 and pH of 6) and with an oxidation time of 5 hours, a maximum removal of 68% in COD and 91% in color was achieved, which represented a quality in the final effluent of 271 mg/L and 151 Pt-Co in COD and color, respectively. therefore, considering that graphite is an economic and widely available material, the results obtained show anodic oxidation, with the use of graphite electrodes, as a technically viable alternative as a final purification stage for pretreated leachates.

关键词： Anodic Oxidation Graphite Electrodes Advanced Oxidation Processes

HIV感染妇女宫颈上皮内瘤样I级病变的自然病程

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（妇产科学分册） 2005年第9期1卷 53-54页

作者： Massad L.S. Evans C.t. Minkoff H. 张巧利 Department of Obste trics Southern Illinois University PO Box 19640 Springfield IL 62794-9640 United States Dr.

OBJECtIVE: We sought to estimate rates of progression and regression of grad e 1 cervical intraepithelial neoplasia (CIN 1) among women with human immunodefici ency virus (HIV). MEtHODS: In a multicenter prospective cohort study, HIV-serop ositive and HIV-seronegative women were evaluated colposcopically after receivi ng an abnormal cytology test result between November 1994 and September 2002. Wo men with CIN 1 were included, except those who had undergone hysterectomy, cervi cal therapy, or had CIN 2-3 or cervical cancer. those women who were included w ere followed cytologically twice yearly, with colposcopy repeated for atypia or worse. RESULtS: We followed 223 women with CIN 1 (202 HIV seropositive and 21 HI V seronegative) for a mean of 3.3 person-years. Progression occurred in 8 HIV- seropositive women (incidence density, 1.2/100 person-years; 95%confidence int erval [CI] 0.5-2.4/100 person-years) and in no HIV seronegative women. Regress ion occurred in 66 (33%) HIV-seropositive women (13/100 person-years, 95%CI 10-16/100 person-years) versus 14 (67%) seronegative women (32/100 person-ye ars, relative risk 0.40, 95%CI 0.25-0.66; P tivariate analysis, regression was associated with human papillomavirus ( HPV) detection (hazard ratio [HR] for low risk 0.28, 95%CI 0.13-0.61, P=.001; and for high-risk 0.34,95%CI 0.20-0.55, P tected) and Hispanic ethnicity (HR 0.48, 95%CI 0.23-0.98; P = .04); HIV serostatus was onl y marginally linked to regression (HR 0.52, 95%CI 0.27-1.03; P=.06), but serop ositive women were less likely to regress when analysis was limited to 146 women with HPV detected at CIN 1 diagnosis (HR 0.18, 95%CI 0.05-0.62; P = .006). CO NCLUSION: Grade 1 cervical intraepithelial neoplasia infrequently progresses in women with HIV. thus, observation appears safe absent oilier indications for tre atment.

关键词：上皮内瘤 HIV感染不典型增生阴道镜检查血清阳性子宫切除转归情况前瞻性队列研究多元分析

数据驱动方法评价帕金森病临床早期阶段的异质性

在线全文

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（神经病学分册） 2005年第7期1卷 19-20页

作者： Lewis S.J.G. Foltynie t. Blackwell A.D. 袁海峰 Cambridge Centre for Brain Repair Forvie Site Addenbrooke's Hospital Cambridge CB2 2PY United Kingdom

Objective: to investigate the heterogeneity of idiopathic Parkinson’s disease (PD) in a data driven manner among a cohort of patients in the early clinical s tages of the disease meeting established diagnostic criteria. Methods: Data on d emographic,motor, mood, and cognitive measures were collected from 120 consecuti ve patients in the early stages of PD (Hoehn and yahrI-III) attending a special ist PD research clinic. Statistical cluster analysis of the data allowed the exi stence of the patient subgroups generated to be explored. Results: the analysis revealed four main subgroups: (a) patients with a younger disease onset; (b) a t remor dominant subgroup of patients; (c) a nontremor dominant subgroup with sign ificant levels of cognitive impairment and mild depression; and (d) a subgroup w ith rapid disease progression but no cognitive impairment. Conclusions:this stud y complements and extends previous research by using a data driven approach to d efine the clinical heterogeneity of early PD. the approach adopted in this study for the identifi cation of subgroups of patients within Parkinson’s disease ha s important implications for generating testable hypotheses on defining the heterogeneity of this common co ndition and its aetiopathological basis and thus its treatment.

关键词：帕金森病数据驱动异质性 impairment 聚类分析轻度抑郁 subgroups 亚组 heterogeneity 发病学

应用氯吡格雷与阿司匹林加艾美拉唑预防复发性溃疡出血的比较研究

在线全文

学校读者我要写书评

暂无评论

世界核心医学期刊文摘（胃肠病学分册） 2005年第6期1卷 9-9页

作者： Chan F.K.L. Ching J.y.L. Hung L.C.t. 姜志茹 Dept. of Medicine and therapeutics Prince of Wales Hospital Chinese University of Hong Kong 30-32 Ngan Shing St. Shatin Hong Kong Dr.

BACKGROUND: Concurrent therapy with a proton-pump inhibitor is a standard treatment for patients receiving aspirin who are at risk for ulcer. Current U.S. guidelines also recommend clopidrogel for patients who have major gastrointestinal intolerance of aspirin. We compared clopidogrel with aspirin plus esomeprazole for the prevention of recurrent bleeding from ulcers in high-risk patients. MEtHODS: We studied patients who took aspirin to prevent vascular diseases and who presented with ulcer bleeding. After the ulcers had healed, we randomly assigned patients who were negative for Helicobacter pylori to receive either 75 mg of clopidogrel daily plus esomeprazole placebo twice daily or 80 mg of aspirin daily plus 20 mg of esomeprazole twice daily for 12 months. the end point was recurrent ulcer bleeding. RESULtS: We enrolled 320 patients (161 patients assigned to receive clopidogrel and 159 to receive aspirin plus esomeprazole). Recurrent ulcer bleeding occurred in 13 patients receiving clopidogrel and 1 receiving aspirin plus esomeprazole. the cumulative incidence of recurrent bleeding during the 12-month period was 8.6 percent (95 percent confidence interval, 4.1 to 13.1 percent) among patients who received clopidogrel and 0.7 percent (95 percent confidence interval, 0 to 2.0 percent) among those who received aspirin plus esomeprazole (difference, 7.9 percentage points; 95 percent confidence interval for the difference, 3.4 to 12.4; P=0.001). CONCLUSIONS: Among patients with a history of aspirin-induced ulcer bleeding whose ulcers had healed before they received the study treatment, aspirin plus esomeprazole was superior to clopidogrel in the prevention of recurrent ulcer bleeding. Our finding does not support the current recommendation that patients with major gastrointestinal intolerance of aspirin be given clopidogrel.

关键词：复发性溃疡美拉唑加艾溃疡出血血管疾病再出血出血病史安慰剂随机分配

儿童脑发育的酰胺质子转移(APt)和磁化转移(Mt)MR成像研究

在线全文

学校读者我要写书评

暂无评论

国际医学放射学杂志 2016年第6期 707-708页

作者： H.Zhang H.Kang X.Zhao S.Jiang y.Zhang J.Zhou 潘楠楠 Imaging Center Department of RadiologyBeijing Children’s HospitalCapital Medical University

摘要目的在3 t场强下,通过联合使用酰胺质子转移(APt)和常规磁化转移(Mt)MRI来量化儿童时期的脑发育进程。方法采用多饱和频率偏移的APt/Mt序列,对82名

关键词：脑发育酰胺质子 MtR Mt)MR APt 儿童

Feline Hypertrophic Cardiomyopathy Associated with the p.A31P Mutation in cMyBP-C Is Caused by Production of Mutated cMyBP-C with Reduced Binding to Actin

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Veterinary Medicine 2013年第2期3卷 95-103页

作者： Mia t.N.Godiksen Craig Kinnear tina Ravnsborg Peter Hojrup Sara Granstrom Inga A.Laursen Paula L.Hedley Johanna C.Moolman-Smook William J.McKenna Jorgen Koch Michael Christiansen Department of Clinical Biochemistry and Immunology Statens Serum InstitutCopenhagenDenmark Department of Small Animals Diseases Faculty of Life ScienceUniversity of CopenhagenCopenhagenDenmark MRC Centre for Molecular and Cellular Biology University of StellenboschCape TownSouth Africa Institute of Biochemistry and Molecular Biology University of Southern DenmarkOdenseDenmark Institute of Cardiovascular Science The Heart HospitalUniversity College LondonLondonUK

Hypertrophic cardiomyopathy (HCM) is a myocardial disorder, with complications including heart failure, thromboemboli and sudden death. Human and feline HCM (fHCM) are clinically comparable, thus fHCM may serve as a spontaneous animal model. fHCM in Maine Coon (MC) cats is associated with the p.A31P mutation in the cMyBP-C protein. the mutation is located in the cMyBP-C C0-domain which is known to interact with actin. the presence and levels of the wild type and mutated protein in heart tissue from mutant and wild type MC cats were examined by SDS-PAGE and mass spectrometry (MS). Quantitative yeast-2-hybrid (y2H) protein-protein interaction analysis was used to assess the effect of the mutation on C0C1/actin interaction. the NMR-based structure of the C0 domain was used to calculate the energetic consequence of replacing alanine with a proline residue. In the homozygous MC cat, the mutated cMyBP-C protein was present, and cMyBPC-C levels were not reduced compared to that of the wild type cat. However, the interaction of actin with mutant cMyBP-C C0C1 was reduced compared to that of wild type. this may be because the substitution of the alanine with proline in position 31 was energetically highly unfavorable and resulted in only one hydrogen bond within the anti-parallel beta-strand compared to two hydrogen-bonds for alanine, possibly destabilizing the structure of the actin-interacting domain. the p.A31P mutation is present in cardiac tissue and the most likely pathogenic mechanism is interference with contractility by reducing binding of the C0C1 domain of cMyBP-C to actin.

关键词： Feline HCM cMyBP-C Mutation Actin y2H MSMS

Effects of SDF-1α on proliferation,migration,adhesion and apoptosis of rat bone derived CD133 +/VEGFR-2+/CD34+endothelial progenitor cells

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effects of SDF-1α on proliferation,migration,adhesion and a...

the Effect of a<i>Lactobacillus</i>-Based Probiotic for the Control of Necrotic Enteritis in Broilers

2008年全国生物流变学与生物力学学术会议

作者： Z.Wanga,b,G.-H.Li a,Z.-S.Jianga,D.-H.Weia,t.-y.Lina and G.-X.Wangb(1.Institute of Cardiovascular Disease,Key Lab for Arteriosclerology of Hunan Province,University of South China,Hengyang 421001,China) 2.Bioengineering College of Chongqing University and"111 Project"Laboratory of Biomechanics & tissue Repair of Ministry of Education,Chongqing 400044,P.R.China)

Methods:Bone marrow derived CD133 +/VEGFR-2 +/CD34 + endothelial progenitor cells(EPCs) were aquired by Micropore-Method and characterized by immunofluorescence staining and flow *** abilities of proliferation,migrati...

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Food and Nutrition Sciences 2013年第11期4卷 1-7页

作者： Sherryll Lynn Layton Xochitl Hernandez-Velasco Shivaramaiah Chaitanya Jorge Xavier Anita Menconi Juan David Latorre Gopala Kallapura Vivek Ayamchirakkunnel Kuttappan Ross Elderon Wolfenden Raphael Lucio Andreatti Filho Billy Marshal Hargis Guillermo téllez Departamento de Medicina y Zootecnia de Aves Facultad de Medicina Veterinaria y Zootecnia Universidad Nacional Autónoma de México México City México Department of Poultry Science University of Arkansas Fayetteville USA Department of Poultry Science University of Arkansas Fayetteville USA Vetanco Argentina S.A. Chile 33 (B1603CMA) Vicente López Buenos Aires Argentina Department of Veterinary Clinics FMVZ UNESP Campus Botucatu Brazil. Pacific Vet Group-USA Inc. Creek View Drive Fayetteville USA Vetanco Argentina S.A. Chile 33 (B1603CMA) Vicente López Buenos Aires Argentina

Necrotic Enteritis (NE) caused by Clostridium perfringens (CP) in poultry is probably the most important bacterial disease in terms of economic implications. the disease is multi-factorial and is invariably associated with predisposing factors. the present study investigated the effect of a commercially available Lactobacillus-based probiotic (FM-B11) for the control of necrotic enteritis in broiler chickens. In experiment 1, one-day-of-hatch broiler chicks were randomly allocated to the following treatment groups: 1) Non-challenged (NC);2) Challenged (C);3) Challenged + probiotic (C+ FM-B11). Prior to placement, chicks in groups 2 and 3 received 0.25 mL of Salmonella typhimurium (St) containing 105 cfu of viable cells by oral gavage. At 14, 15 and 16 days of age, all chicks in group 3 were treated with FM-B11 in the drinking water at a concentration of 106 cfu/ml. At 21d of age, all chicks in groups 2 and 3, were individually challenged with 5 × 104 sporulated oocysts of E. maxima by oral gavage. At 26d of age, all chicks in groups 2 and 3, were individually challenged with 108 cfu CP;body weight (BW) was recorded prior to challenge. the experiment was terminated at 29 days of age and the following parameters were evaluated: NE-associated mortality, CP lesion scores, CP concentrations in ileum, BW, and body weight gain (BWG). Chicks treated with FM-B11 had significantly (P y weight gain after challenge when compared to control challenge chickens. total mortality was higher in the C group (48.8%) when compared to the C + FM-B11 (12.7%). Even though there was no significant (P > 0.05) difference in lesion score between C and C + FM-B11, group C + FM-B11 had significantly (P total number of cfu of CP recovered from the ileal mucosa and content samples when compared to group C. Experiment 2 was a unique and remarkable case report of a field outbreak of NE in a commercial broiler farm in Argentina. A reduction and control of the mortality

关键词： Lactobacillus Necrotic Enteritis Salmonella Coccidiosis Probiotic

Scleroderma and HIV Infection: A Case Report with Literature Review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Journal of Internal Medicine 2018年第4期8卷 255-260页

作者： I. A. Dembélé N. R. Nyanke D. traore A. K. Souckho D. Sy M. Cissoko A. Sanogo B. B. Sangaré O. A. Cisse K. Dao K. t. tighankpa M. Malle M. togo A. Keita A. traore M. Saliou y. Fofana D. Sangaré N. tolo N. Doumbia A. Doumbia B. B. Berthé B. D. Camara S. A. Coulibaly N. Sawadogo M. Dembélé A. K. traore H. A. traore Internal Medicine Department Point G Teaching Hospital Bamako Mali Department of Internal Medicine Kaya Regional Hospital Kaya Burkina Faso

Introduction: Acquired immunodeficiency syndrome (AIDS) linked to HIV infection is accompanied by auto-immune phenomena. Autoimmune diseases can develop in people living with HIV, most in a context of good immunological control (vasculitis, anti-phospholipid syndrome). Since the advent of antiretroviral therapy, an increasing number of autoimmune connective tissue diseases such as systemic lupus erythematosus, dermatomyositis, and syndromes of Sj?gren and scleroderma have been reported. Purpose: to describe this association’s not very common scleroderma and HIV infection. Observation: We report the case of a 56-year-old lady admitted into the service for functional impotence that would have been evolving for a week. Prior to her hospitalization, she presented edemas of the lower limbs associated with anesthesia of the lower limbs for 5 months. the painting is accompanied by a productive cough and an intermittent fever. At the physical examination a weight loss (BMI = 13.74 Kg/m2), fever (38.7°C): Oral candidiasis, lower lip ulceration, perlicking, undernutrition folds, sclerodactyly and homogeneous hepatomegaly was noted. the diagnosis of immunosuppression to HIV Stage 3 with tB co-morbidity and positive hepatitis B Serology was retained while diffuse Scleroderma was selected from the ACR/EULAR criteria of 2012 with a score of 10 (sclerodactyly = 4 point;Raynaud’s phenomenon = 3 point and Ac Anti Scl 70 positive = 3 point). Conclusion: these associations of chronic pathology must be described to improve the future treatment of our patients.

关键词： Scleroderma HIV Internal Medicine