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起源部位不确定的子宫癌的MR成像价值

国际医学放射学杂志 2011年第3期 277-278页

作者： h.a.vargas O.Akin C.Moskowitz R.Soslow N.Abu-Rustum 焦慧 Departments of Radiology Memorial Sloan-Kettering Cancer Center1275 York AveRoom C-278New YorkNY 10065USA

目的当临床和(或)组织学评估不确定时,应用MRI确定新诊断子宫癌的起源部位(宫体或宫颈)的价值。材料与方法获机构伦理委员会同意,并免除符合hIPAA法案

关键词：子宫癌 MRI 宫体起源部位 MR

前列腺癌3T MR直肠内扩散加权成像:肿瘤检测和侵袭性评估

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国际医学放射学杂志 2011年第4期 385-386页

作者： h.a.vargas O.Akin T.Franiel Y.Mazaheri C.Moskowitz 陈仁彪 Departments of Radiology Medical PhysicsEpidemiology and BiostatisticsPathologyUrologyand SurgeryMemorial Sloan-Kettering Cancer Center

目的以全标本包埋逐层切片(whole-mount step-section)病理分析作为参考标准,评估3TMR在T2WI基础上扩散加权(DW)成像对增加前列腺癌检测的价值,同时探讨应用表观扩散系数(ADC)确定肿瘤侵袭性的特点。材料与方法此项回顾性研究符合hIPAA... 详细信息

目的以全标本包埋逐层切片(whole-mount step-section)病理分析作为参考标准,评估3TMR在T2WI基础上扩散加权(DW)成像对增加前列腺癌检测的价值,同时探讨应用表观扩散系数(ADC)确定肿瘤侵袭性的特点。材料与方法此项回顾性研究符合hIPAA并获得机构审查委员会批

关键词：前列腺癌 DW 肿瘤检测 MR 侵袭性

去势抵抗前列腺癌的骨转移:CT形态学类型、PET糖酵解活性和雄激素受体表达与总存活的相关性

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国际医学放射学杂志 2014年第3期 287-288页

作者： h.a.vargas C.Wassberg J.J.Fox A.Wibmer D.A.Goldman D.Kuk 唐光健 Department of Radiology Memorial Sloan-Kettering Cancer Center1275 York AveNew YorkNY 10065USA

摘要目的对照骨转移的CT特征与18F-氟脱氧葡萄糖(FDG)正电子发射体层成像(PET)和氟18-16β-氟-5双氢睾酮(FDhT)PET示踪剂的摄取,并与患有去势抵抗前列腺

关键词：前列腺癌病人 FDG PET 去势骨转移 CT 相关性

MRI在评估临床低风险前列腺癌中的性能特点:前瞻性研究

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国际医学放射学杂志 2013年第1期 64-65页

作者： h.a.vargas O.Akin A.Shukla-Dave J.Zhang K.L.Zakian J.Zheng 柴超 Department of Radiology Memorial Sloan-Kettering Cancer Center1275 York AveRoom C-278New YorkNY 10065

目的对于临床诊断低风险前列腺癌的病人,前瞻性评价T2WI和MRS在检测不同病理体积和Gleason评分的前列腺癌中的诊断效能。材料与方法本前瞻性研究获得单位伦理委员会批准,符合hIPAA原则。对183例临床患低风险前列腺癌病人[T1-T2a期,活检G... 详细信息

目的对于临床诊断低风险前列腺癌的病人,前瞻性评价T2WI和MRS在检测不同病理体积和Gleason评分的前列腺癌中的诊断效能。材料与方法本前瞻性研究获得单位伦理委员会批准,符合hIPAA原则。对183例临床患低风险前列腺癌病人[T1-T2a期,活检Gleason评分≤6,前列腺特异性抗原(PSA)<10ng/mL]在前列腺切除前行MR检查,所有病人均签署了知情同意书。2名放射学医师分别在T2WI上对前列腺六分区中肿瘤存在的可能性进行评分,按照1～5分的标准(1分,绝对没有肿瘤;5分,确定存在肿瘤)。2名波谱学专家共同记录病灶的位置,评价其在MRS中的代谢特点是否与肿瘤相一致。参考标准为整体组织的病理学分析。评价前列腺六分区内0.5cm3或更大体积病灶的诊断效能(T2WI)和检测敏感性(T2WI联合MRS)。结果 2位阅片者在T2WI上发现六分区内病灶的ROC曲线下面积分别为0.77和0.82。当病灶体积≥0.5cm3而<1cm3时,对于Gleason评分≤6的病灶的敏感度(阅片者1,0.44;阅片者2,0.61)较Gleason评分≥7者的敏感度(阅片者1,0.73,P=0.02;阅读者2,0.84,P=0.05)明显降低。对于体积≥1cm3的病灶,病灶的Gleason评分对敏感度并无显著的影响(Gleason评分≤6,阅片者1,0.83,阅片者2,1.0;Gleason评分≥7,分别为0.82,0.92;P≥0.07)。MRS的敏感性较低,与病灶体积或Gleason评分无明显联系。结论对于临床低风险前列腺癌的病人,在T2WI上发现体积<1cm3的病灶明显受Gleason评分的影响;对于体积≥1cm3的病灶检测明显优于小病灶,并且不受病灶Gleason评分的影响。在这类病人中,单独应用MRS的作用有限。

关键词：前列腺癌病人病灶体积 MRI 前瞻性研究

包含T2WI、DWI和动态对比剂增强序列的多参数前列腺MRI:所有序列均为诊断放疗后前列腺癌局部复发所必需的吗?

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国际医学放射学杂志 2013年第5期 481-482页

作者： O.F.Donati S.I.Jung h.a.vargas D.h.Gultekin J.Zheng C.S.Moskowitz 罗宴吉 Departments of Radiology Memorial Sloan-Kettering Cancer Center

摘要目的对比T2WI MRI与其他序列参数联合MRI,如T2WI和DWI MRI联合,T2WI和动态对比剂增强(DCE)MRI联合诊断放疗后前列腺癌局部复发的准确性。材料与方法该项回顾性研究遵从hIPAA,经学术审查委员会审核通过,取得所有病人的知情同意。疑... 详细信息

摘要目的对比T2WI MRI与其他序列参数联合MRI,如T2WI和DWI MRI联合,T2WI和动态对比剂增强(DCE)MRI联合诊断放疗后前列腺癌局部复发的准确性。材料与方法该项回顾性研究遵从hIPAA,经学术审查委员会审核通过,取得所有病人的知情同意。疑有放疗后复发性前列腺癌者53例(中位年龄70岁)接受了多参数的MRI检查,包括DWI和DCE序列,检查时间与活检间隔小于6个月,2名阅片医师各自独立地评估复发性前列腺癌的可能性,分别在5种情况下诊断:单独T2WI序列、T2WI联合DWI、T2WI联合

关键词： DWI 对比剂增强 MRI 序列放疗后局部复发多参数前列腺癌所有

Exploring the size of Andean condor foraging groups along an altitudinal and latitudinal gradient in the Tropical Andes: Ecological and conservation implications

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Current Zoology 2024年第2期70卷 225-232页

作者： Diego Mendez Felix hernan vargas Joséhernan Sarasola Pedro P.Oleaa Departamento de Ecologia Universidad Autonoma de MadridCalle Darwin 228049MadridSpain Museo Nacional de historia Natural Calle 26 s/nCota CotaLa PazBolivia The Peregrine Fund 5668 West Flying Hawk LaneBoiseID 83709USA Centro para el Estudio y Conservacion de Aves Rapaces en Argentina(CECARA) Universidad Nacional de La PampaAvda Uruguay 1516300 Santa RosaLa PampaArgentina Instituto de las Ciencias Ambientales y de la Tierra de La Pampa(INCITAP-CONICET) Avda.Uruguay 1516300 Santa RosaLa PampaArgentina Centro de Investigacion en Biodiversidad y Cambio Global(CIBC-UAM) Universidad Autonoma de MadridMadridCalle Darwin 228049Madrid Snain

Patterns of variation in the size of vulture foraging groups,and their ecological causes and consequences,remain litle explored despite strong links with the carrion recycling service that this key functional group *** documented the group size-frequency pattern of Andean con-dors Vultur gryphus gathered to feed on 42 equine carcasses experimentally placed in Bolivia,between 2012 and 2019,along an elevation range of 1,300-4,500 m *** on the location(altitude and latitude)of the foraging groups,we examined the relationship between their size and species'population parameters(size and trend),habitat conditions,and livestock carcass availability and *** utilized a high frequency(93%)of carcasses forming groups that ranged from 1 to 80 individuals(mean=25,median=18)and shaped a"lazy-J curve"typical pattern of size-frequency distribution whereby few groups(5,12%)were large(>55 individuals)and most(21,50%)were relatively small(hat most larger groups formed at lower sites(below c.3,000 m asl),likely following an altitudinal gradient whereby larger groups are more likely to form around larger carcasses(i.e.,cattle),which are more likely to occur at lower *** of population size,group size could be an adaptive response of condors via local enhancement for improving individual scavenging *** information gaps on this topic still exist,thus we provide a set of questions to address them,especially amidst the unrestricted impacts of human activities that condition vulture survival globally.

关键词： condor andino fusion-fission dynamics group size scavenger social foraging vultures.

Efficiency and effectiveness of systems for the treatment of domestic wastewater based on subsurface flow constructed wetlands in Jarabacoa, Dominican Republic

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Water Science and Engineering 2024年第2期17卷 118-128页

作者： Yvelisse Pérez Enmanuel vargas Daniel Garcia-Cortes William hernandez humberto Checo Ulises Jauregui-haza Area de Ciencias Basicas y Ambientales Instituto Tecnologico de Santo Domingo(INTEC)Avenida de Los Proceres 49Los Jardines del NorteSanto Domingo 10602Dominican Republic Ministry of Environment and Natural Resources Calle Cayetano Germosen esq.Ave.LuperonEl PedregalSanto Domingo 11107Dominican Republic Plan Yaque Calle Estela Geraldino 14 AltosJarabacoa 41000Dominican Republic Institute of Technologies and Applied Sciences University of HavanaHavana 10400Cuba

Constructed wetlands(CwW)are well known nature-based systems for water *** study evaluated the efficiency and effectiveness of seven domestic wastewater treatment systems based on horizontal flow CWs in Jarabacoa,the Dominican *** results showed that the CWs were efficient in reducing the degree of contamination of wastewater to levels below the Dominican wastewater discharge standards for parameters such as the 5-day biochemical oxygen demand(BOD5)and chemical oxygen demand,but not for the removal of phosphorus and fecal *** addition,a horizontal flow subsurface wetland in the peri-urban area El Dorado was evaluated in terms of the performance of wastewater treatment in tropical climatic *** concentrations of heavy metals,such as zinc,copper,chromium,and iron,were found to decrease in the effluent of the wetland,and the concentrations for nickel and manganese tended to *** levels of heavy metals in the effluent were lower than the limit values of the Dominican wastewater discharge *** construction cost of these facilities was around 200 USD per population equivalent,similar to the cost in other countries in the same *** study suggested some solutions to the improved performance of CWs:selection of a microbial flora that guarantees the reduction of nitrates and nitrites to molecular nitrogen,use of endemic plants that bioaccumulate heavy metals,combination of constructed wetlands with filtration on activated carbon,and inclusion of water purification processes that allow to evaluate the reuse of treated water.

关键词： Domestic wastewater Constructed wetland BOD COD Pathogens heavy metals

Inflow and outflow permeability tests in a very soft clay under low stresses

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第8期16卷 3270-3283页

作者： J.W.S.vargas F.A.B.Danziger F.R.Lopes T.Lunne Federal University of Rio de Janeiro Rio de JaneiroBrazil Norwegian Geotechnical Institute OsloNorway

In situ inflow and outflow permeability tests with the BAT probe at SarapuíII soft clay test site are presented.A description of the BAT permeability test is provided,discussing its advantages and shortcomings,especially in the case of very soft clays under low *** pressures were monitored during probe installation and were found to be slightly lower than piezocone u2 pore pressures,consistent with the position of the *** role of filter tip saturation was investigated after the usual saturation procedure provided an unsatisfactory pore pressure response during probe *** show that the vacuum saturation procedure provides adequate response during installation and increases the reliability of the coefficient of permeability determination in early *** inflow and outflow tests yielded similar results,indicating that careful execution of the test can lead to good test repeatability regardless of the loading *** sequences of alternated inflow and outflow tests have yielded similar results,indicating that soil reconsolidation and filter clogging were negligible in the tests *** are presented concerning the relationship between index parameters and the in situ coefficient of permeability for SarapuíII clay,which plot outside the range of existing databases.

关键词： Permeability test Soft clay BAT probe Inflow and outflow tests

how to fill the biodiversity data gap:Is it better to invest in fieldwork or curation?

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Plant Diversity 2024年第1期46卷 39-48页

作者： Carlos A.vargas Marius Bottin Tiina Sarkinen James E.Richardson Marcela Celis Boris Villanueva Adriana Sanchez Programa de Biología Facultad de Ciencias NaturalesUniversidad del RosarioBogotaD.C.Colombia Subdireccion Científica Jardín Botanico de Bogota“Jose Celestino Mutis”BogotaD.C.Colombia Independent Researcher BogotaD.C.Colombia Tropical Diversity Section Royal Botanic Garden EdinburghUK School of Biological Earth and Environmental SciencesUniversity College CorkCorkIreland Departamento de Química y Biología Universidad del NorteKm.5 Vía Puerto ColombiaArea Metropolitana de Barranquilla 081007Colombia

Data gaps and biases are two important issues that affect the quality of biodiversity information and downstream *** how best to fill existing gaps and account for biases is necessary to improve our current information most *** current main approaches for obtaining and improving data include(1)curation of biological collections,and(2)***,the comparative effectiveness of these approaches in improving biodiversity data remains little *** used the Flora de Bogota project to study the magnitude of change in species richness,spatial coverage,and sample coverage of plant records based on curation versus *** process of curation resulted in a decrease in species richness(synonym and error removal),but it significantly increased the number of records per *** contributed to a slight increase in species richness,via accumulation of new ***,curation led to increases in spatial coverage,species observed by locality,the number of plant records by species,and localities by species compared to ***,curationwas more efficient in producing new information compared to fieldwork,mainly because of the large number of records available in *** recommend intensive curatorial work as the first step in increasing biodiversity data quality and quantity,to identify bias and gaps at the regional scale that can then be targeted with *** stepwise strategy would enable fieldwork to be planned more costeffectively given the limited resources for biodiversity exploration and characterization.

关键词： Colombia Flora de Bogota Sample coverage Species richness Tropical Andes

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