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Classifying moisture sources associated with snowfall in the mountains of Lesotho

Journal of mountain Science 2024年第6期21卷 1941-1953页

作者： alexi m.m.rinaki Jennifer m.FITCHETT School of Geography Archaeology and Environmental StudiesUniversity of the WitwatersrandPrivate Bag X3Wits 2050South Africa

An average of eight snowfall events occur each year in the eastern Lesotho *** snowfall events are typically associated with cut-off low(CoLs)systems and mid-latitude ***,the moisture sources of the snowfall are unclassified and *** Hybrid Single-Particle Lagrangian Integrated Trajectory(HYSPLIT)model,an air mass back trajectory model,has been used to evaluate moisture source waters locally in southern Africa and internationally in China and *** study uses HYSPLIT to determine the source moisture of snow in Lesotho.A list of all 82 snowfall events in Lesotho spanning 2017 to 2022 was compiled using the Snow Report SA Instagram page,including the date and location of snowfall.A 72-hour back trajectory for each snowfall event was initiated for both Afriski and the whole of *** amounts to models of moisture source trajectories for 28 and 82 snowfall days,*** air mass pathways are classified according to their frequency per snowfall event,per month in the snow season,per year and for the full *** this,associated moisture source regions and dominant air mass trajectories were *** study reports that the air mass trajectories associated with Afriski and Lesotho as a whole are very *** most common pathway of air mass trajectories transporting snow-bearing moisture to Lesotho was an inland trajectory from the northern regions of southern *** pathway makes up 16.6%of all trajectories reported and is associated with the Angola Low,the Congo Air Boundary and the *** High Pressure.

关键词： Eastern Lesotho Highlands Afriski Snow Cut-off Lows HYSPLIT Synoptic Climatology

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Tumor-stroma ratio as prognostic factor for survival in rectal adenocarcinoma: A retrospective cohort study

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World Journal of Gastrointestinal Oncology 2017年第12期9卷 466-474页

作者： René Scheer alexi Baidoshvili Shorena Zoidze marloes AG Elferink Annefleur Em Berkel Joost m Klaase Paul J van Diest Department of Surgery Medisch Spectrum Twente Laboratory for Pathology East-Netherlands Netherlands Comprehensive Cancer Organization Location Enschede Department of Pathology University Medical Center Utrecht

AIm To evaluate the prognostic value of the tumor-stroma ratio(TSR) in rectal *** TSR was determined on hematoxylin and eosin stained histological sections of 154 patients treated for rectal adenocarcinoma without prior neoadjuvant treatment in the period 1996-2006 by two observers to assessreproducibility. Patients were categorized into three categories: TSR-high [carcinoma percentage(CP) ≥ 70%], TSR-intermediate(CP 40%, 50% and 60%) and TSR-low(CP ≤ 30%). The relation between categorized TSR and survival was analyzed using Cox proportional hazards *** Thirty-six(23.4%) patients were scored as TSR-low, 70(45.4%) as TSR-intermediate and 48(31.2%) as TSRhigh. TSR had a good interobserver agreement(κ = 0.724, concordance 82.5%). Overall survival(OS) and disease free survival(DFS) were significantly better for patients with a high TSR(P = 0.01 and P = 0.02, respectively). A similar association existed for disease specific survival(P = 0.06). In multivariate analysis, patients without lymph node metastasis and an intermediate TSR had a higher risk of dying from rectal cancer(HR = 5.27, 95%CI: 1.54-18.10), compared to lymph node metastasis negative patients with a high TSR. This group also had a worse DFS(HR = 6.41, 95%CI: 1.84-22.28). An identical association was seen for OS. These relations were not seen in lymph node metastasis positive patients. CONCLUSION The TSR has potential as a prognostic factor for survival in surgically treated rectal cancer patients, especially in lymph node negative cases.

关键词： Rectal cancer Adenocarcinoma Prognosis Recurrence Pathology Tumor-stroma ratio

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The spatial variability of actual evapotranspiration across the Amazon River Basin based on remote sensing products validated with flux towers

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Ecological Processes 2019年第1期8卷 67-86页

作者： Victor Hugo da motta Paca Gonzalo E.Espinoza-Dávalos Tim m.Hessels Daniel medeiros moreira Georges F.Comair Wim G.m.Bastiaanssen IHE Delft Institute for Water Education Westvest 7Delft 2611 AXNetherlands TU Delft DelftNetherlands CPRm-Geological Survey of Brazil Rio de JaneiroBrazil World Bank WashingtonD.C.USA

Actual evapotranspiration(ET)is a major component of the water *** several international flux measurement programs have been executed in the tropical rain forest of the Amazon,those measurements represent the evaporative process at a few selected sites *** aim of this study is to obtain the spatial distribution of ET,using remote sensing techniques,across the entire Amazon River *** from six global ET products based on remote sensing techniques(GLEAm,SEBS,alexi,CmRSET,mOD16,and SSEBop)were merged to obtain an ensemble prediction of the ET rates for the complex and in-accessible environment of the Amazon at a spatial resolution of 250 *** study shows that the basinwide average ET is 1316 mm/year with a standard deviation of 192 mm/*** new ET-Amazon product was validated against seven different historic flux tower *** energy balance closure of the in situ measurements varied between 86 and 116%.Only months with more than 70%completeness of in situ measurements were considered for *** procedures for closure correction were included in the *** correlation between measured and remotely sensed ET is good(R2>0.97 for consecutive periods of 2 to 12months),and the bias correction is negligible for the energy balance residual method,which seemed most *** ET values have more *** monthly RmSE values vary between 7.4 and 27.8 mm/month(the average RmSE is 22.2mm/month),and the coefficient of determination(R2)varies between 0.48 and 0.87(the average R2 is 0.53).The ET from the water balance is 1380 mm/year,being−64 mm/year difference and 4.6%less than ET derived from the water *** evaporation from the Amazon basin inside Brazil is 5063 km3/year,followed by Peru with 1165 km3/***-Amazon shows more spatial details and accuracy than alternative global ET products such as LandFlux-EVAL,model Tree Ensemble(mTE),and *** justifies the development of new regional ET pro

关键词： Amazon River Basin Evapotranspiration Flux towers measurements ET-Amazon product

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成人房间隔缺损的诊断和外科治疗

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德国医学 1999年第5期16卷 295-297页

作者： m.Vogel F.Berger A.Kramer V.alexi-meshkishvili P.E.Lange 廖永德 Deutsches Herzzentrum Augustenburger Platz 1 D-13353 BerlinGermany 同济医科大学附属同济医院

主题与背景目前采用外科手术闭合成人房间隔缺损的价值尚有争论,认为手术风险大且术后生活质量如何尚无可靠资料。病人与方法对205例(女,149例,男,56例,平均年龄41.4岁)经手术闭合房间隔缺损的病人进行回顾性分析。记录术前症状、并... 详细信息

主题与背景目前采用外科手术闭合成人房间隔缺损的价值尚有争论,认为手术风险大且术后生活质量如何尚无可靠资料。病人与方法对205例(女,149例,男,56例,平均年龄41.4岁)经手术闭合房间隔缺损的病人进行回顾性分析。记录术前症状、并发症、心律失常、肺动脉压和术后对生活质量(按NYHA标准评级)及心律失常的影响。结果本组病例中,有138例(66％)在确诊时已有呼吸困难或心悸症状,4例有过中风,2例有心内膜炎史,55例(27％)有房扑或房颤,47例(23％)心功能为NYHAⅢ级或Ⅳ级。平均手术年龄为42.2岁(18～74.9岁)。其中1例肺动脉高压女性患者死亡,术后1例中风,术后房扑或房颤病例降至31例(15％),176例(86％)术后心功能NYHA评级有改善,尤以术前Ⅳ级者改善明显。

关键词：房间隔缺损成人诊断外科手术

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