检索结果-南通市图书馆

Lead and Cadmium Distribution in Tubes of Galvanized Steel by Hot-Dip Used for Drinking Water Supply

在线全文

学校读者我要写书评

暂无评论

Journal of Civil Engineering and Architecture 2020年第5期14卷 271-279页

作者： fernando Benedicto Mainier Felipe Silva Semaan Thais Pereira Sarmento Pedro Henrique Oliveira Amorim Rodolfo Gomes Shamádos Santos Escola de Engenharia Universidade Federal FluminenseNiteróiRio de Janeiro 27255-125Brazil Instituto de Química Universidade Federal FluminenseNiteróiRio de Janeiro 27255-125Brazil

The main objective of this work was to evaluate the presence of lead and cadmium in galvanized steel tubes by hot-dip used exclusively for drinking water *** this research,samples of galvanized tubes were removed from walls of residential buildings with 30 years of *** the process of hot galvanizing,the manufacturing standards allow or for low cost conveniences,and the use of primary zinc ingot with 1.6%metallic impurities,such as lead and cadmium,is allowed,enabling the incorporation of these metals into the zinc coating deposited on the carbon *** associated corrosion of these tubes can release these toxic metals,contaminating the drinking water used by *** samples taken from the tubes were evaluated by a square-wave anodic stripping voltammetry technique,and the results for lead and cadmium suggested randomly distributed levels,indicating that the contents of these contaminants depend mainly on the quality of the added primary zinc and the operational conditions of the immersion *** metallographic evaluations performed on the samples of the galvanized tubes showed irregularities in thickness and even a lack of the zinc layer deposited on the carbon steel *** facts suggest that galvanized tubes should not be used for drinking water.

关键词： Lead zinc hot-dip galvanized steel square-wave anodic stripping voltammetry contamination

微型蒸发器田间实测麦田与裸地土面蒸发强度的试验研究

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

水利学报 1999年第6期30卷 45-50页

作者：刘钰 Fern.,RM 中国水利水电科学研究院水利所

本文介绍了用两种不同规格的微型蒸发器测定麦田和裸地土面蒸发强度的方法，并对实测结果进行了对比分析．从实测的土面蒸发变化过程得到了小麦各生育阶段土面蒸发与总腾发量的比例关系，分析了相对土面蒸发强度与土壤含水量的关系以及... 详细信息

本文介绍了用两种不同规格的微型蒸发器测定麦田和裸地土面蒸发强度的方法，并对实测结果进行了对比分析．从实测的土面蒸发变化过程得到了小麦各生育阶段土面蒸发与总腾发量的比例关系，分析了相对土面蒸发强度与土壤含水量的关系以及土面蒸发强度与作物叶面积指数的关系．通过对试验过程和实测数据的分析。

关键词：微型蒸发器土面蒸发冬小麦

Circulating insulin-like growth factor-binding protein 3 as prognostic biomarker in liver cirrhosis

在线全文

学校读者我要写书评

暂无评论

World Journal of Hepatology 2016年第17期8卷 739-748页

作者： Carina Gabriela Correa Bruno da Silveira Colombo Marcelo fernando Ronsoni Pedro Eduardo Soares e Silva Leonardo Fayad Telma Erotides Silva Letícia Muraro Wildner Maria Luiza Bazzo Esther Buzaglo Dantas-Correa Janaína Luz Narciso-Schiavon Leonardo de Lucca Schiavon Division of Gastroenterology Federal University of Santa Catarina Department of Clinical Analysis Federal University of Santa Catarina

AIM: To investigate the prognostic significance of insulin-like growth factor-binding protein 3(IGFBP-3) in patients with ***: Prospective study that included two cohorts: outpatients with stable cirrhosis(n = 138) and patients hospitalized for acute decompensation(n = 189). Development of complications, mortality or liver transplantation was assessed by periodical phone calls and during outpatient visits. The cohort of stable cirrhosis also underwent clinical and laboratory evaluation yearly(2013 and 2014) in predefined study visits. In patients with stable cirrhosis, IGFBP-3 levels were measured at baseline(2012) and at second re-evaluation(2014). In hospitalized subjects, IGFBP-3 levels were measured in serum samples collected in the first and in the third day after admission and stored at-80 ℃. IGFBP-3 levels were measured by ***: IGFBP-3 levels were lower in hospitalized patients as compared to outpatients(0.94 mcg/mL vs 1.69 mcg/m L, P < 0.001) and increased after liver transplantation(3.81 mcg/m L vs 1.33 mcg/mL, P = 0.008). During the follow-up of the stable cohort, 17 patients died and 11 received liver transplantation. Bivariate analysis showed that death or transplant was associated with lower IGFBP-3 levels(1.44 mcg/mL vs 1.74 mcg/m L, P = 0.027). The Kaplan-Meier transplant-free survival probability was 88.6% in patients with IGFBP-3 ≥ 1.67 mcg/mL and 72.1% for those with IGFBP3 < 1.67 mcg/mL(P = 0.015). In the hospitalized cohort, 30-d mortality was 24.3% and was independently associated with creatinine, INR, SpO_2/FiO_2 ratio and IGFBP-3 levels in the logistic regression. The 90-d transplant-free survival probability was 80.4% in patients with IGFBP-3 ≥ 0.86 mcg/mL and 56.1% for those with IGFBP3 < 0.86 mcg/mL(P < 0.001). CONCLUSION: Lower IGFBP-3 levels were associated with worse outcomes in patients with cirrhosis, and might represent a promising prognostic tool that can be incorporated in clinical practice.

关键词： Liver cirrhosis Acute decompensation Insulin-like growth factor binding protein 3 Acute-onchronic li

急重症患儿静脉注射普萘洛尔治疗面颈部巨大血管瘤

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国口腔颌面外科杂志 2016年第3期14卷 202-202页

作者： fernando SJ Leitenberger S Majerus M

面颈部节段性婴幼儿血管瘤（IH）能够导致气道阻塞,引起窒息,危及生命。普萘洛尔可促使血管瘤消退,恢复气道功能。该文作者首次采用静脉注射（IV）普萘洛尔治疗面颈部增殖期巨大节段性IH,该患儿同时合并坏死性结肠炎（NEC）。

关键词：普萘洛尔面颈部血管瘤坏死性结肠炎重症患儿消化功能气道阻塞增殖期多系统疾病

在线全文

学校读者我要写书评

暂无评论

迟滞特性稳定的比较器

电子设计技术 1999年第11期 47-47页

作者： fernando Garcia Lucent Technologies Brownsville TX

除非电压比较电路是在对极为干净的信号进行采样,否则这种比较器总是需要县有某种迟滞特性才行。传统的比较电路是通过两个电阻器之比取得的正反馈信号来获得所需迟滞特性的。同相输入端上的电压乃是输入和输出电压的一部分的和,两个电... 详细信息

除非电压比较电路是在对极为干净的信号进行采样,否则这种比较器总是需要县有某种迟滞特性才行。传统的比较电路是通过两个电阻器之比取得的正反馈信号来获得所需迟滞特性的。同相输入端上的电压乃是输入和输出电压的一部分的和,两个电压值都分别除以它们相应的电阻比。对于反相比较器,同相输入端通常连至

关键词：比较器仪表迟滞特性反馈电阻器

Autism spectrum disorder:Review of literature and dental management

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

World Journal of Stomatology 2018年第2期6卷 11-18页

作者： Luiz fernando M Czornobay Etiene Andrade Munhoz Mariah L Lisboa Ines Beatriz S Rath Alessandra R de Camargo Department of Dentistry Health Science CentreFederal University of Santa Catarina University Hospital Professor Polydoro Ernani de Sao Thiago Federal University of Santa Catarina

With an increase in the number of cases of autism spectrum disorder(ASD),dental professionals need to be aware of the different techniques required to ensure safe dental treatments for affected patients. The concerns and preferences of the parents and the medical and dental history of each patient should be considered. The aim of this article was to provide a comprehensive update on the medical and dental health of patients with ASD. A detailed search of the electronic database PubMed/Medline/Lilacs was performed for the terms"Autism", "Autistic", "Autism Spectrum Disorder", "ASD", "Dentistry" and"Dentist", in the period between 2006 and 2017. Systemic reviews, research articles, and literature reviews were included. Expert opinions, case series, and case reports were excluded from the search. A detailed family-centered approach based on the preferences and concerns of parents is an important foundation for appropriate individualized dental treatment of patients with ASD. In addition,the knowledge of disruptive behaviors and patient′s challenges may guide dental practitioners in improving treatment planning, oral management, and the overall oral health of patients with ASD.

关键词： Autism Autism spectrum disorder Autistic Dentistry Dental management

Eviendep~ reduces number and size of duodenal polyps in familial adenomatous polyposis patients with ileal pouchanal anastomosis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2013年第34期19卷 5671-5677页

作者： Carlo Calabrese Chiara Praticò Andrea Calafiore Maurizio Coscia Lorenzo Gentilini Gilberto Poggioli Paolo Gionchetti Massimo Campieri fernando Rizzello Dipartimento di Scienze Mediche e Chirurgiche (DIMEC) University of Bologna

AIM:To evaluate if 3 mo oral supplementation with Eviendep was able to reduce the number of duodenal polyps in familial adenomatous polyposis(FAP)patients with ileal pouch-anal anastomosis(IPAA).METHODS:Eleven FAP patients with IPAA and duodenal polyps were *** underwent upper gastrointestinal(GI)endoscopy at the baseline and after 3 mo of *** patient received 5 mg Eviendep twice a day,at breakfast and dinner time,for3 *** endoscopists evaluated in a blinded manner the number and size of duodenal *** GI endoscopies with biopsies were performed at the baseline(T0)with the assessment of the Spigelman ***>10 mm were removed during endoscopy and at the end of the procedure a new Spigelman score was determined(T1).The procedure was repeated 3 mo after the baseline(T2).Four photograms were examined for each patient,at T1 and *** examined area was divided into 3 segments:duodenal bulb,second and third portion *** specimens were taken from all polyps>10 mm and from all suspicious ones,defined by the presence of a central depression,irregular surface,or irregular vascular *** was classified according to the updated Vienna ***:At baseline the mean number of duodenal detected polyps was 27.7 and mean sizes were 15.8mm;the mean Spigelman score was *** polypectomy the mean number of duodenal detected polyps was 25.7 and mean sizes were 7.6 mm;the mean Spigelman score was *** 3 mo of Eviendep bid,all patients showed a reduction of number and size of duodenal *** mean number of duodenal polyps was 8(P=0.021)and mean size was 4.4 mm;the mean Spigelman score was *** agreement was ***>1 cm found a very good degree of concordance(kappa 0.851)and a good concordance was as well encountered for smaller lesions(kappa 0.641).CONCLUSION:Our study demonstrated that shortterm(90 d)supplementation with Eviendep in FAP patients with IPAA and with recurrent adenomas in t

关键词： Familial adenomatous polyposis Ileal pouch-anal anastomosis Duodenal polyps Eviendep

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

极小曲面-变分理论及其应用

数学译林 2014年第4期33卷 292-292页

作者： fernando Coda Marques 丁璐张伟王世坤巴西IMPA 不详

极小曲面在微分几何中是很自然的研究对象，且自Lagrange（拉格朗日）开创性的工作以来，其研究已经持续250多年了．这一领域以拥有大量漂亮的、或许可以讲拥有杰出的结果为其特征，极小曲面（或称极小子流形）在其他领域中也有引人注... 详细信息

极小曲面在微分几何中是很自然的研究对象，且自Lagrange（拉格朗日）开创性的工作以来，其研究已经持续250多年了．这一领域以拥有大量漂亮的、或许可以讲拥有杰出的结果为其特征，极小曲面（或称极小子流形）在其他领域中也有引人注目的应用，

关键词：极小曲面变分理论应用 Lagrange 极小子流形微分几何拉格朗日

多学科研究团队中研究人员的绩效:社会资本重要吗?

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

国际行政科学评论（中文版） 2022年第2期 62-81页

作者：费尔南多·马丁—阿尔卡扎玛尔塔·鲁伊斯—马丁内斯冈萨罗·桑切斯—加尔迪王秋蕾(译) 熊缨(审校) 西班牙加迪斯大学西班牙加迪斯大学商业管理系中国人事科学研究院不详

本文旨在讨论学科多样性(多学科性)与研究人员的绩效之间的关系,探讨社会资本的调节作用。本文有助于解释多学科研究单位的内部流程以及它们如何影响研究人员的科学绩效。此外,本文还探讨了社会资本的潜在调节作用,以及关系的动态如何... 详细信息

本文旨在讨论学科多样性(多学科性)与研究人员的绩效之间的关系,探讨社会资本的调节作用。本文有助于解释多学科研究单位的内部流程以及它们如何影响研究人员的科学绩效。此外,本文还探讨了社会资本的潜在调节作用,以及关系的动态如何缓解与多学科性相关的潜在问题。为了检验提出的假设,我们对学术管理领域的155名研究人员的样本进行了定量研究,并在实证分析中使用了多元回归分析。研究结果表明,研究人员的绩效与多学科性之间存在正相关关系(倒U型关系)。评估结果还显示,内部社会资本调节了这种曲线关系,使得在较高的多学科性水平上实现较高的研究绩效成为可能。

关键词：多样性多学科性研究研究人员的绩效社会资本