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Disturbance increases high tide travel distance of a roosting shorebird but only marginally affects daily energy expenditure

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Avian Research 2019年第3期10卷 294-304页

作者： Hans Linssen Martijn van de Pol Andrew M.Allen mitzi jans Bruno J.Ens Karen L.Krijgsveld Magali Frauendorf Henk-Jan van der Kolk Department of Animal Ecology Netherlands Institute of Ecology6708PB WageningenThe Netherlands Resource Ecology Group Wageningen University & Research6708PB WageningenThe Netherlands Centre for Avian Population Studies Droevendaalsesteeg 106708PB WageningenThe Netherlands Department of Animal Ecology and Physiology Radboud University6500GL NijmegenThe Netherlands Sovon-Texel Sovon Dutch Centre for Field Ornithology1790AB Den BurgThe Netherlands Nature Bureau Royal Netherlands Air Force4820BB BredaThe Netherlands

Background:Anthropogenic disturbance can negatively affect an animal's energy budget by evoking movement *** research focuses mainly on immediate displacement as a disturbance effect,since this can be easily observed in the field. However, effects on movement over longer timescales are poorly examined and it is largely unknown if and to what extent they reflect immediate ***-term responses could for example be larger than immediate responses if birds, after disturbance, return to the original location and thereby travel twice the immediate disturbed distance. Methods:We combined GPS tracking data with observational data to quantify the effects of anthropogenic (air force and walkers) and non-anthropogenic disturbances on distances travelled by roosting Eurasian Oystercatchers (Haematopus ostralegus) during the non-breeding season. We compared immediate displacement after a disturbance with distance travelled during the entire high tide period (longer-term response), while accounting for environmental ***,we calculated energy expenditure due to disturbance based on observed disturbance ***:Disturbance resulted in an immediate displacement response of ~200 m (median).Air force disturbances tended to yield larger immediate responses than walker and,especially,than non-anthropogenic ***-term responses and immediate responses were approximately similar,suggesting that,over longer timescales,spatial disturbance effects in the study area remain confined to immediate ***,disturbances were infrequent (0.17 disturbances per bird per hour) and most disturbances were of natural origin (62%).Consequently, anthropogenic disturbance of roosting oystercatchers in the study area on average costs 0.08% of the daily energy expenditure. Conclusions:Our results suggest that immediate spatial responses to disturbance can be a useful proxy for spatial responses over longer *** the non-exha

关键词： Biologging Disturbance Haematopus ostralegus High tide roost Movement ecology Shorebird

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Changes in iron transporter divalent metal transporter 1 in proximal jejunum after gastric bypass

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World Journal of Gastroenterology 2014年第21期20卷 6534-6540页

作者： Andrés Marambio Guillermo Watkins Fabiola Castro Andrea Riffo Roberta Zú?iga Jaime jans María E Villanueva Guillermo Díaz Department of Surgery University of Chile Clinical HospitalSantiago 8380456Chile Department of Gastroenterology Chilean Air Force Clinical HospitalSantiago 7560171Chile Department of Pharmacological and Toxicological Chemistry University of Chile Chemistry and Pharmacy FacultySantiago 8380492Chile Pathology Service University of Chile Clinical HospitalSantiago 8380456Chile

AIM: To describe the variation that divalent metal transporter 1 (DMT1) shows in patients after Roux-en-Y gastric bypass (RYGB) surgery.

关键词： Roux-en-Y gastric bypass Bariatric surgery Divalent metal transporter 1 Anaemia Iron

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Commercial Advertisements Scheduling Problem

Commercial Advertisements Scheduling Problem

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作者： Yi-hua LI Lila RASEKH Raf jans Lead Scientist of Continuous Improvement and Enterprise Optimization GAP Inc. Department of Logistics and Operations Management

An important source of revenues for Channel 4 comes from the campaign advertisement during commercial breaks. Given a set of campaigns(TV advertisements) and a set of breaks with air times, the Campaign Allocation Problem(CAP) is to determine how campaigns’ spots should be allocated to a subset of breaks in order to maximize total revenue and evenness with respect to all business rules and constraints.

关键词： TV advertisements Scheduling optimization and integer programming

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Sensitivity,specificity and predictive values of anterior chamber tap in cases of bacterial endophthalmitis

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Eye and Vision 2017年第1期4卷 100-105页

作者： Carl Sjoholm-Gomez de Liano Vidal F.Soberon-Ventura Guillermo Salcedo-Villanueva Abril Santos-Palacios Jose Luis Guerrero-Naranjo jans Fromow-Guerra Gerardo García-Aguirre Virgilio Morales-Canton Raul Velez-Montoya Retina Department Asociación para Evitar la Ceguera en MexicoHospital“Dr.Luis Sanchez Bulnes”IAPMexico CityMexico Universidad Popular Autonoma del Estado de Puebla PueblaMexico Ophthalmology Department Macula Retina ConsultantsMexico CityMexico

Background:To assess the sensitivity,specificity,positive predictive value and negative predictive value of anterior chamber tap for the diagnosis of bacterial endophthalmitis on a population with high ***:Retrospective,single centre,case series *** reviewed all medical records with clinical diagnosis of bacterial endophthalmitis in our hospital from January 1st,2000 to December 31st *** each record,we documented general demographic data,best corrected visual acuity and vitreous and aqueous tap microbiological *** cases were further divided according to the endophthalmitis aetiology to perform individual calculations of sensitivity,specificity,positive predictive value,negative predictive value,accuracy and *** used the results of the vitreous tap as the gold standard for diagnosis of bacterial *** excluded those records in which the aqueous and vitreous samples were not taken simultaneously or had an incomplete microbiological *** were assessed with chi squared statistics,with an alpha value of 0.05 for statistical ***:A total of 190 cases fulfilled the inclusion/exclusion *** culture rate from vitreous samples was 64.74%.Positive culture rate from aqueous sample was 32.11%.Bacteria isolated from aqueous samples matched those isolated from vitreous samples 78.68%of the *** overall sensitivity was 38.21%,specificity:75.51%,positive predictive value:79.66%,negative predictive value:32.74%(p=0.08).Subgroup analysis showed that anterior chamber taps in cases of post-surgical endophthalmitis had a moderate to low sensitivity(37.73%),high specificity(93%)and high positive predictive value(95%)(p<0.04).Conclusion:The sensitivity and specificity of anterior chamber tap are low and should not be used for critical therapeutic decisions in patients with suspected bacterial *** cases of post-surgical endophthalmitis,the result of an anterior chamber tap

关键词： Aqueous humour Endophthalmitis Anterior chamber tap Diagnostic test Vitreous tap Aqueous sampling Sensibility Sensitivity

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无线电监测和测向在海事上的应用

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中国无线电 2006年第8期 52-53页

作者： jans Fretwurst 薛宁地

现代的世界经济在很大程度上依赖于货物的运输.海洋运输航线上货轮的密度一直在增加,而渔船、渡船、挖泥船等船舶又使航线上船只密度过大的问题更加严重.这种情况是随着海运业的蓬勃发展所产生的,它的产生又导致了一系列问题,如航海人... 详细信息

现代的世界经济在很大程度上依赖于货物的运输.海洋运输航线上货轮的密度一直在增加,而渔船、渡船、挖泥船等船舶又使航线上船只密度过大的问题更加严重.这种情况是随着海运业的蓬勃发展所产生的,它的产生又导致了一系列问题,如航海人员生命安全所受到的威胁、货物安全所受到的威胁和生态环境所受到的威胁等.因此,可靠的海运控制和监测就越来越重要,世界各国都在使用专业的无线电设备来进行海运船只的监控,这些设备称为VTS(Vessel Traffic Service,船舶交通服务)系统.

关键词：无线电监测船舶交通服务 Service 无线电设备应用海事测向世界经济

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