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QSPR study about sampling rates of semipermeable membrane devices for monitoring of organochlorine pesticides in Alps air

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Chinese Science Bulletin 2011年第18期56卷 1884-1889页

作者： ZHU XiuHua DING GuangHui LEVY Walkiria JAKOBI Gert OFFENTHALER ivo MOCHE Wolfang WEISS Peter SCHRAMM Karl-Werner School of Environmental and Chemical Engineering Dalian Jiaotong University Dalian 116028 China College of Environmental Science and Engineering Dalian Maritime University Dalian 116026 China Helmholtz Zentrum Miinchen-German Research Center for Environmental Health Institute of Ecological Chemistry Ingolstiidter Landstr. 1 D-85764 Neuherberg Munich Germany TUM Wissenschaftszentrum Weihenstephanfuer Ernaehrung und Landnutzung Departmentfuer Biowissenschaftliche Grundlagen Weihen- stephaner Steig 23 85350 Freising Germany Umweltbundesamt GmbH Spittelauer Lginde 5 1090 Wien Austria

Organochlorine pesticides (OCP) were monitored at the Weissfluhjoch site (Switzerland) and the top of Mt. Sonnblick (Austria) with a low volume active air sampler and semipermeable membrane devices (SPMD). The air sampling rates (Rair) of the SPMD for OCP were calculated. Statistical tests showed that there was no significant difference between Rair at the two different sampling sites. Quantitative structure-property relationship (QSPR) models of the Rair of the SPMD were developed for OCP using partial least square (PLS) regression. Quantum chemical descriptors computed by the semi-empirical PM6 method were used as predictor variables. The cumulative variance of the dependent variable explained by the PLS components and determined by cross-validation (Q2cum) was >0.818 for each optimal model. This indicates that the model has good predictive ability and robustness. The Rair of the SPMD for OCP is related to the total energy, the van der Waals area and the total dipole moment of the OCP molecules. The main factors governing Rair values of OCP are intermolecular interactions and the energy required for cavity-formation in dissolution of OCP into triolein of the SPMD. The linear correlation coefficient between predicted and experimental values were all >0.921.

关键词：空气采样器半透膜装置有机氯农药 QSPR 采样率阿尔卑斯山监测计算量子化学

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Evaluation of Soil Quality Indicators in Sugarcane Management in Sandy Loam Soil

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Pedosphere 2009年第3期19卷 312-322页

作者： S.A.C.SANT'ANNA M.F.FERNANDES W.M.P.M.ivo J.L.S.COSTA Brazilian Agricultural Research Corporation (Embrapa Coastal Tablelands) Av. Beira Mar 3250 Aracaju SE 49025- 040 (Brazil) Departament of Physiology Universidade Federal de Sergipe So Cristóvo SE 49100-000 (Brazil) Brazilian Agricultural Research Corporation (Embrapa Coastal Tablelands) Av. Beira Mar 3250 Aracaju SE 49025-040 (Brazil) Brazilian Agricultural Research Corporation (Embrapa) Brasília DF 70770-901 (Brazil)

An important factor for the sustainability of soils highly susceptible to degradation is the use of monitoring tools that promptly and realistically reflect changes imposed on soil by different cropping systems. To select soil quality indicator variables in sugarcane (Saccharum officinarum L.) production areas that fulfill the criteria of sensitivity to management practices and between-season consistency in the management discrimination, ten composite soil samples (0–10 cm) were collected in July 2005 (rainy season) and again in March 2006 (dry season) from areas under cultivation of organic sugarcane (OS), green sugarcane (GS), burned sugarcane (BS) and from an adjacent native forest (NF) area at Usina Triunfo, Boca da Mata, Alagoas, Brazil. Microbial biomass-C (MBC), total organic C (TOC), soil enzyme activity expressed as the rate of fluorescein diacetate (FDA) hydrolysis, mean weight diameter of water-stable soil aggregates (MWD), and percentage of water-stable macroaggregates (PWSA) were analyzed. Although MBC and TOC were higher in NF than in the cultivated areas, no differences were observed in these C pools between the three sugarcane systems. The response of FDA to the site management was dependent on the sampling time. In the rainy period, the activity followed the order: NF > OS > GS > BS, whereas in the dry season, only NF differed from the other treatments. Irrespective of the sampling time, MWD and PWSA decreased in the order NF > OS = GS > BS. The variables MWD and PWSA are quite sensitive for discriminating between site management histories regardless the sampling season.

关键词： fiuorescein diacetate green-sugarcane organic matter management sugarcane (Saccharum oJficinarum L.) sustainable agricultural use

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A Process for Extracting Non-Taxonomic Relationships of Ontologies from Text

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Intelligent Information Management 2011年第4期3卷 119-124页

作者： ivo Serra Rosario Girardi 不详

Manual construction of ontologies by domain experts and knowledge engineers is an expensive and time consuming task so, automatic and/or semiautomatic approaches are needed. Ontology learning looks for identifying ontology elements like non-taxonomic relationships from information sources. These relationships correspond to slots in a frame-based ontology. This article proposes an initial process for semiautomatic extraction of non-taxonomic relationships of ontologies from textual sources. It uses Natural Language Processing (NLP) techniques to identify good candidates of non-taxonomic relationships and a data mining technique to suggest their possible best level in the ontology hierarchy. Once the extraction of these relationships is essentially a retrieval task, the metrics of this field like recall, precision and f-measure are used to perform evaluation.

关键词： Ontology Ontology Learning Non-Taxonomic Relationships Natural Language Processing

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乳房良性畸形的治疗

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中华整形烧伤外科杂志 1993年第2期9卷 87-88页

作者： ivo PITANGUY 陈国璋巴西

乳房良性畸形的治疗是一个重要的领域,在一些特定的人群中有重要的社会意义。和许多其它国家一样,中国可能有许多人患有各种不同的乳房畸形,在此介绍我们国家治疗这些畸形的经验,内容包括:乳房肥大、乳房不对称、小乳畸形、男性乳房发... 详细信息

乳房良性畸形的治疗是一个重要的领域,在一些特定的人群中有重要的社会意义。和许多其它国家一样,中国可能有许多人患有各种不同的乳房畸形,在此介绍我们国家治疗这些畸形的经验,内容包括:乳房肥大、乳房不对称、小乳畸形、男性乳房发育、乳房再造、乳头肥大及配合以上手术的辅助性手术治疗。

关键词：乳房畸形

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Sensory innervation around immediately vs. delayed loaded implants: a pilot study

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International Journal of Oral Science 2015年第1期7卷 49-55页

作者： Yan Huang Jeroen van Dessel Wendy Martens ivo Lambrichts Wei-Jian Zhong Guo-Wu Ma Dan Lin Xin Liang Reinhilde Jacobs Department of Imaging & Pathology Faculty of Medicine University of Leuven and Oral & Maxillo-facial Surgery University Hospitals Leuven State Key Laboratory of Oral Diseases West China Hospital of Stomatology Sichuan University Biomedical Research Institute Hasselt University School of Stomatology Dalian Medical University Center for Statistics Hasselt University

Although neurophysiological and psychophysical proof of osseoperception is accumulating, histomorphometric evidence for the neural mechanisms of functional compensation following immediate and delayed implant loading is still lacking. For this randomized split-mouth study, six mongrel dogs randomly received one of four treatment protocols at 36 implant-recipient sites over 16 weeks （third maxillary incisor, third and fourth mandibular premolar）： immediate implant placement and immediate loading （liP＋ IL）; delayed implant placement and delayed loading （DIP＋DL）; delayed implant placement and immediate loading （DIP＋IL）; and natural extraction socket healing （control）. Histomorphometry was performed in the peri-implant bone and soft tissues within 300 pm around the implants. Immunocytochemistry and transmission electron microscopy were used to confirm the presence of neural structures and to reveal their ultrastructural characteristics, respectively. Myelinated nerve fibres densely populated the peri-implant crestal gingival and apical regions, although they were also identified in the woven bone and in the osteons near the implant threads. Compared with the control group in the mandible, the group that received IIP＋IL showed a higher innervation （in ***^-2, 5.94±1.12 vs. 3.15±0.63, P〈0.001） and smaller fibre diameter （in pm, 1.37±0.05 vs. 1.64±0.13, P=0.016）, smaller axon diameter （in pm, 0.89±0.05 vs. 1.24±0,10, P=0.009） and g-ratio （0.64±0.04 vs. 0.76±0.05, P〈0.001） in the middle region around the implants. Compared with DIP＋IL in the mandible, IIP＋IL had a higher nerve density （in ***^-2, 13.23±2.54 vs. 9.64±1.86, P=0.027）, greater fibre diameter （in pm, 1.32±0.02 vs. 1.20±0.04, P=0.021）, greater axon diameter （in μm, 0.92±0.01 vs. 0.89±0.03, P=-0.035） and lower g-ratio （0.69±0.01 vs. 0.74±0.01, P=-0.033） in the apical region around the implants. It may be assumed that the treatment protocol with liP＋ IL is the preferred method to allow optimized peri-implant re-i

关键词： animal experiments dental implants histomorphometry immediate loading mechanoreceptor myelinated nerve fibres osseoperception

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基于遗传算法的多目标最小二乘支持向量机在近红外多组分定量分析中的应用

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光谱学与光谱分析 2014年第3期34卷 638-642页

作者：徐冰王星 Dhaene Tom 史新元 Couckuyt ivo 白雁乔延江北京中医药大学中药信息工程研究中心北京100029 Ghent University-iMINDS Department of Information TechnologyGent B-9050Belgium 河南中医学院河南郑州450008

近红外(NIR)定量分析通常涉及多个组分,采用遗传算法和自适应建模策略,建立了能够对多组分同时定量的多目标最小二乘支持向量机(LS-SVM),并将其应用于玉米中四个组分和连翘中两个活性成分的NIR分析。结果表明多目标遗传算法配合自适应... 详细信息

近红外(NIR)定量分析通常涉及多个组分,采用遗传算法和自适应建模策略,建立了能够对多组分同时定量的多目标最小二乘支持向量机(LS-SVM),并将其应用于玉米中四个组分和连翘中两个活性成分的NIR分析。结果表明多目标遗传算法配合自适应建模策略可保证优化收敛于全局最优解。所建玉米多目标LS-SVM模型明显优于PLS1和PLS2模型;连翘多目标LS-SVM模型与PLS模型均可取得较好的校正和预测效果。两组数据中,径向基神经网络(RBFNN)模型均出现过拟合现象。多目标LS-SVM和单目标LS-SVM性能相近,但多目标LS-SVM建模运行一次即可得到结果,在NIR多组分定量分析中具有潜在应用优势。

关键词：多目标最小二乘支持向量机遗传算法近红外多组分定量自适应建模

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Unravelling the protracted U-Pb zircon geochronological record of high to ultrahigh temperature metamorphic rocks:Implications for provenance investigations

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Geoscience Frontiers 2023年第2期14卷 116-132页

作者： Mahyra Tedeschi Pedro Leonardo Rossi Vieira Matheus Kuchenbecker Bruno VRibeiro Vitor Barrote Humberto Reis Laura Stutenbecker Cristiano Lana Antonio Pedrosa-Soares ivo Dussin Programa de Pós-graduação em Geologia da Universidade Federal de Minerais Centro de Pesquisas Manoel Teixeira da CostaInstitute of GeosciencesFederal University of Minas GeraisAv.Antônio Carlos6627Belo Horizonte 31270-901Brazil Institute of Geological Sciences University of Bern3012 BernSwitzerland Laboratório de Estudos Tectônicos Universidade Federal dos Vales do Jequitinhonha e MucuriRodovia MGT 367Km 583-Diamantina 39100-000Brazil School of Earth Atmosphere and EnvironmentMonash UniversityClaytonVictoria 3800Australia Timescales of Mineral Systems Group School of Earth and Planetary SciencesCurtin UniversityPerthWA 6845Australia Freie Universität Berlin Institut für Geologische WissenschaftenGeochemieMalteserstr.1074-10012249 BerlinGermany Departamento de Geologia-Escola de Minas Universidade Federal de Ouro Preto 35400-000Brazil Department of Materials and Earth Sciences Institute of Applied GeosciencesTU DarmstadtSchnittspahnstr.964287 DarmstadtGermany TEKTOS Geotectonic Research Group Geology InstituteRio de Janeiro State UniversitySão Francisco Xavier Street524/4030-AMaracanãRio de Janeiro 20550-900Brazil

The assessment of detrital zircon age records is a key method in basin analysis,but it is prone to several biases that may compromise accurate sedimentary provenance *** to ultrahigh temperature(HT-UHT)metamorphism(especially if T>850℃)is herein presented as a natural cause of bias in provenance studies based on U-Pb detrital zircon ages,since zircon from rocks submitted to these extreme and often prolonged conditions frequently yield protracted,apparently concordant,geochronological *** age spreading can result from disturbance of the primary U-Pb zircon system,likewise from(re)crystallization processes during multiple and/or prolonged metamorphic *** this contribution,available geochronological data on Archean,Neoproterozoic and Palaeozoic HT-UHT metamorphic rocks,acquired by different techniques(SIMS and LA-ICP-MS)and showing distinct compositions,are reassessed to demonstrate HT-UHT metamorphism may result in modes and age distributions of unclear geological *** a consequence,it may induce misinterpretations on UPb detrital zircon provenance analyses,particularly in sedimentary rocks metamorphosed under such extreme temperature *** evaluate the presence of HT-UHT metamorphism-related bias in the detrital zircon record,we suggest a workflow for data acquisition and interpretation,combining a multi-proxy approach with:(i)in situ U-Pb dating coupled with Hf analyses to retrieve the isotopic composition of the sources,and(ii)the integration of a petrochronological investigation to typify fingerprints of the HT-UHT metamorphic *** proposed workflow is validated in the investigation of one theoretical and one natural example allowing a better characterization of the sedimentary sources,maximum depositional ages,and the tectonic setting of the *** workflow allows to the appraisal of biases imposed by HT-UHT metamorphism and resulting disturbances in the U-Pb detrital zircon record,particularly for sedimentary

关键词： Detrital zircon Protracted zircon record Sedimentary basins UHT metamorphism Prolonged metamorphism Bias in detrital zircon

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Current status of laparoscopic and robotic ventral mesh rectopexy for external and internal rectal prolapse

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World Journal of Gastroenterology 2016年第21期22卷 4977-4987页

作者： Jan J van Iersel Tim JC Paulides Paul M Verheijen John W Lumley ivo AMJ Broeders Esther CJ Consten Meander Medical Centre Department of Surgery Twente University Faculty of Science and Technology Institute of Technical Medicine Wesley Medical Centre Department of Surgery

External and internal rectal prolapse with their affiliated rectocele and enterocele, are associated with debilitating symptoms such as obstructed defecation, pelvic pain and faecal incontinence. Since perineal procedures are associated with a higher recurrence rate, an abdominal approach is commonly preferred. Despite the description of greater than three hundred different procedures, thus far no clear superiority of one surgical technique has been demonstrated. Ventral mesh rectopexy(VMR) is a relatively new and promising technique to correct rectal prolapse. In contrast to the abdominal procedures of past decades, VMR avoids posterolateral rectal mobilisation and thereby minimizes the risk of postoperative constipation. Because of a perceived acceptable recurrence rate, good functional results and low mesh-related morbidity in the short to medium term, VMR has been popularized in the past decade. Laparoscopic or robotic-assisted VMR is now being progressively performed internationally and several articles and guidelines propose the procedure as the treatment of choice for rectal prolapse. In this article, an outline of the current status of laparoscopic and robotic ventral mesh rectopexy for the treatment of internal and external rectal prolapse is presented.

关键词： Laparoscopic ventral mesh rectopexy Robot Rectal prolapse External rectal prolapse Internal rectal prolapse Rectocele Mesh erosion Obstructed defecation Faecal incontinence Biological mesh

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Structural Development of Oxford Advanced Learners＇ Dictionary

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Journal of Literature and Art Studies 2017年第5期7卷 588-607页

作者： Ivana Ivan i ivo Fabijani University ofZadar Zadar Croatia

Oxford Advanced Learners＇ Dictionary （OALD） stands out, on the EFL market, as the only EFL dictionary which has been continuously republished for over 70 years. With each new edition upgraded, OALD conforms to the contemporary language teaching and learning processes worldwide. This article presents its structural development--an evolution from its very first, Japanese edition in 1942 towards the latest one in 2015. The analysis deals with the development and changes within the macrostructural （front matter, the body, appendices） and microstructural （headword, spelling, pronunciation, part of speech, senses, definitions, illustrations, usage） frames of the dictionary.

关键词： macrostructure microstructure verb-patterns OALD

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Myasthenic crisis-induced Takotsubo cardiomyopathy in an elderly man:A case report of an underestimated but deadly combination

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World Journal of Cardiology 2021年第1期13卷 21-27页

作者： Yvonne Kuo Thomas H Ottens ivo van der Bilt Ruud WM Keunen Sakir Akin Intensive Care Unit HagaziekenhuisThe Hague 2545Netherlands Department of Cardiology HagaziekenhuisThe Hague 2545Netherlands Department of Neurology Haga Teaching HospitalThe Hague 2545Netherlands

BACKGROUND Patients with myasthenia gravis(MG)are at a higher risk of developing Takotsubo cardiomyopathy(TTC),particularly during a myasthenic *** crisis-associated TTC occurs predominantly in *** this case report,we present a man with metastasized prostate carcinoma who developed TTC after new-onset *** SUMMARY An 81-year-old man with non-insulin dependent diabetes mellitus and metastasized prostate carcinoma presented with *** primary assessment examination at the emergency department,there was evident blepharoptosis of his right *** electrocardiograms were suggestive of an acute anterior wall myocardial infarction,for which he underwent emergency coronary *** obstructive coronary artery disease was *** the coronary angiography,the patient developed respiratory failure and was admitted to the Intensive Care Unit for non-invasive respiratory *** following day,diagnostic neostigmine test revealed a myasthenic *** echocardiography revealed left ventricular apical ballooning with a typical appearance of *** the potentially reversible character of both MG and TTC,the patient and family requested an end of support in the Intensive Care Unit due to age and chronic malignancy with reduced quality of life in recent months after non-chemo-responding prostate *** patient died soon after treatment *** Elderly men should be carefully evaluated for TTC when new-onset MG is diagnosed.

关键词： Takotsubo cardiomyopathy Broken heart syndrome Stress-induced cardiomyopathy Myasthenic crisis Respiratory failure Case report

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