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Rationally designed synthesis of bright AgInS2/ZnS quantum dots with emission control

Nano Research 2020年第9期13卷 2438-2450页

作者： Jose X.Soares K.David Wegner David S.M.Ribeiro armindo melo Ines Hausler Joao L.M.Santos Ute Resch-Genger LAQV-REQUIMTE Department of Chemical SciencesLaboratory of Applied ChemistryFaculty of PharmacyUniversity of PortoRua de Jorge Viterboferreira228Porto4050-313Portugal Federal Institute for Materials Research and Testing(BAM) Division BiophotonicsRichard-Willstaetter-Strasse 1112489 BerlinGermany LAQV-REQUIMTE Laboratorio de Bromatologia e HidrologiaDepartamento de Ciencias QutmicasFaculdade de Farmacia da Universidade do PortoRua de Jorge Viterboferreira228Porto4050-313Portugal Technische Universitat Berlin Institutfiir Optik und Atomare PhysikStrafie des 17.Juni 13510623 BerlinGermany

In the blossoming field of Cd-free semiconductor quantum dots(QDs),ternary Ⅰ-Ⅲ-VI QDs have received increasing attention due to the ease of the environmentally friendly synthesis of high-quality materials in water,their high photoluminescence(PL)quantum yields(QYs)in the red and near infrared(NIR)region,and their inherently low ***,their oxygen-insensitive long PL lifetimes of up to several hundreds of nanoseconds close a gap for applications exploiting the compound-specific parameter PL *** overcome the lack of reproducible synthetic methodologies and to enable a design-based control of their PL properties,we assessed and modelled the synthesis of high-quality MPA-capped AglnS2/ZnS(AlS/ZnS)*** refined parameters included reaction time,temperature,Ag:In ratio,S:In ratio,Zn:In ratio,MPA:ln ratio,and pH using a design-of-experiment *** for the optimization was provided by mathematical models developed for the application-relevant PL parameters,maximum PL wavelength,QY,and PL lifetime as well as the elemental composition in terms of Ag:ln:Zn *** these experimental data-based models,MPA:ln and Ag:ln ratios and pH values were identified as the most important synthesis parameters for PL control and an insight into the connection of these parameters could be ***,the experimental conditions to synthetize QDs with tunable emission and high QY were *** excellent agreement between the predicted and experimentally found PL features confirmed the reliability of our methodology for the rational design of high quality AlS/ZnS QDs with defined PL *** approach can be straightforwardly extended to other ternary and quaternary QDs and to doped QDs.

关键词： quantum dot core/shell nanoparticle silver indium sulfide microw ave-assisted synthesis design of experim ent photoluminescence

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Hydraulic energy indices reveal spatial dependence in a subtropical soil under maize crop in Southern Brazil

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Pedosphere 2021年第5期31卷 771-782页

作者： Maria Eliza TUREK Robson Andre armindo Ole WENDROTH Graduate Program of Environmental Engineering(PPGEA) Federal University of Paraná(UFPR)Curitiba 81531980(Brazil) Department of Physics(DFI) Federal University of Lavras(UFLA)Mailbox 3037Lavras 37200900(Brazil) Department of Plant&Soil Sciences University of Kentucky(UK)Lexington 40546-0091(USA)

Soil physical quality(SPQ)assessment is an important part in the evaluation of soil use,management,and *** can be assessed using several physical properties,hydraulic indices,and *** from tropical and temperate regions represent different physical behaviors,and the quantification of their physical properties is important to support soil evaluation and *** objective of this study was to evaluate the SPQ in a subtropical field under maize crop cultivation according to its physical properties,hydraulic indices,and functions in an attempt to infer the spatial variability and to determine the behavior of soil physical structure across a spatial *** used soil key physical variables,such as texture,bulk density,total porosity,saturated hydraulic conductivity,and organic carbon content,were measured in a regular grid with a soil sampling density of 30 points per hectare,covering an area of0.5 *** hydraulic conductivity varied strongly between subsamples and in the field,suggesting the heterogeneity of the soil structure regarding water *** physical variables were combined with other indicators,which were based on the soil water retention curve and the pore size distribution(PSD)*** analysis was performed to verify the relationship between the measured and calculated variables,and some strong linear correlations were revealed,such as between aeration energy index and microporosity(r=0.608)and water retention energy index with microporosity(r=0.532)and with bulk density(r=0.541).For most sampled locations,the shape and location parameters of PSD showed results outside of the optimum ranges,whereas the hydraulic energy indices and cumulative hydraulic energy functions presented values that were similar to those found for some tropical soils described in the *** spatial variability of these indices was described using semivariograms and kriged maps,indicating the variability of the SPQ i

关键词： geostatistics integral energy pore size distribution soil physical indicators soil physical quality soil water retention curve

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Reproductive Strategies of a Terrestrial Snail along an Altitudinal Gradient on an Oceanic Island

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Journal of Life Sciences 2013年第1期7卷 31-41页

作者： Ana Filipa Ferreira Antonio Manuel de Frias Martins Regina Tristao da Cunha Paulo Jorge melo armindo dos Santos Rodrigues Department of Biology University of the Azores Ponta Delgada 9501-801 Azores Portugal Center for Research on Biodiversity and Genetic Resources (CIBIO) University of the Azores Ponta Delgada 9501-801 Azores Portugal Center of Research in Natural Resources (CIRN) University of the Azores Ponta Delgada 9501-801 Azores Portugal Center of Volcanology and Geological Risks Assessment (CVARG) Ponta Delgada 9501-801 Azores Portugal

This study reports how the reproductive cycle of a land snail endemic from an oceanic island is shaped by abiotic factors over an altitudinal gradient of 800 m. In addition, the validity of two morphometric shell parameters （maximum diameter and total height） was assessed, as maturation diagnostic characteristics. The authors＇ findings suggest that, at Piedade （200 m）, individuals are active and mature from October/November to March, and they exhibit dormancy in the remaining months, as a consequence of soil dryness. Thus, at low altitude, gonadal maturation was considered to be primarily influenced by photoperiod, rainfall and temperature At Cabeqo da Bola （1000 m）, in turn, individuals are mature from March to July/August and they seem to have minimal gametogenic conditions throughout the remaining months of the year to reproduce. As soil moisture is never a limiting factor, gonadal maturation is mainly shaped by photoperiod and temperature at high altitude. The morphometric shell parameters under analysis were unable to diagnose gonadal maturation, as recently described for related Azorean species.

关键词： Adaptation land mollusk climate soil moisture.

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Anti-obesity drugs currently used and new compounds in clinical development

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World Journal of Meta-Analysis 2014年第4期2卷 135-153页

作者： armindo Martins Sandra Morgado Manuel Morgado CICS-UBI-Health Sciences Research Center University of Beira Interior6201-001 CovilhaPortugal Hospital Centre of Cova da Beira 6200-251 CovilhaPortugal

Obesity is a chronic disease which requires treatment. As lifestyle interventions alone hardly ever result in long-term weight loss, pharmacotherapy is an impor-tant adjunct to lifestyle measures to improve the induc-tion and maintenance of weight loss. Owing to the lim-ited options currently available for the pharmacological treatment of obesity, it is imperative to develop new safe compounds. This study aims to review the current medications approved by European Medicines Agency and United States Food and Drug Administration （FDA） for the treatment of obesity, focusing essentially on their benefits and risks, as well as on the new drugs which are presently under clinical trials. Moreover, it lists the anti-obesity agents that have been recently withdrawn from the market. A revision of the scientifc literature was carried out, through a search on Pubmedfor papers published from January 2010 to January2013. Orlistat （Xenical？） is currently the only long-termpharmacotherapy for obesity available in the Europeanmarket, as rimonabant and sibutramine were with-drawn in 2008 and 2010, respectively, due to serious psychiatric and cardiovascular adverse effects. Lorca-serin （Belviq？） and the association of phentermine and topiramate （QsymiaTM） were recently approved by FDA. Orlistat suppresses appetite inhibiting gastrointestinal lipase, being its adverse effects mostly gastrointestinal. Lorcaserin activates 5-HT2C receptors, phentermine is a norepinephrine releasing drug, and topiramate is an anticonvulsivant drug with weight loss properties.

关键词： Obesity Weight loss Pharmacological treatment European Medicines Agency Food and Drug Administration Clinical trials

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Global mapping of volumetric water retention at 100,330 and 15000 cm suction using the WoSIS database

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International Soil and Water Conservation Research 2023年第2期11卷 225-239页

作者： Maria Eliza Turek Laura Poggio Niels H.Batjes Robson Andre armindo Quirijn de Jong van Lier Luis de Sousa Gerard B.M.Heuvelink ISRIC-World Soll Information Wageningemthe Netherlands Graduate Program in Environmental Engineering Federal University of ParunaCurtibaR Brazil Soll Geography and Landscope Group Wageningen University Wageningenthe Netherlands Department of Physics Federul University of LavrasMGBrarll CENA-Universiy of Sao Poulo PinacicabasaoBrazil

Present global maps of soil water retention(SWR)are mostly derived from pedotransfer functions(PTFs)applied to maps of other basic soil *** an alternative,'point-based'mapping of soil water content can improve global soil data availability and *** developed point-based global maps with estimated uncertainty of the volumetric SWR at 100,330 and 15000 cm suction using measured SWR data extracted from the WoSIS Soil Profile Database together with data estimated by a random forest PTF(PTF-RF).The point data was combined with around 200 environmental covariates describing vegetation,terrain morphology,climate,geology,and hydrology using *** total,we used 7292,33192 and 42016 SWR point observations at 100,330 and 15000 cm,respectively,and complemented the dataset with 436108 estimated values at each *** cross-validation yielded a Root Mean Square Error(RMSE)of6380,7.112 and 6.48510^(-2)cm^(3)cm^(-3),and a Model Efficiency Coefficient(MEC)of0.430,0386,and 0.471,respectively,for 100,330 and 15000 *** results were also compared to three published global maps of SWR to evaluate differences between point-based and map-based mapping ***-based mapping performed better than the three map-based mapping approaches for 330 and 15000 cm,while for 100 cm results were similar,possibly due to the limited number of SWR observa-tions for 100 *** sources or uncertainty identified included the geographical clustering of the data and the limitation of the covariates to represent the naturally high variation of SWR.

关键词： Digital soil mapping Soil hydraulic properties Pedometrics SoilGrids

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Nest Site Selection of Loggerhead and Leatherback Sea Turtles at the Eastern Coast of Inhaca Island, Mozambique

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Journal of Life Sciences 2016年第5期10卷 260-268页

作者： Vera Cristina de Menezes Julien Almeida Tomas Guissamulo armindo Filipe da Silva Adriano AfonsoMacia Junior Department of Biological Sciences University Eduardo Mondlane P. O. Box 257 Maputo Mozambique Natural History Museum University Eduardo Mondlane P. O. Box 257 Maputo Mozambique Department of Mapping Sciences National Statistics Institute Maputo P. O. Box 493 Maputo Mozambique

Nest site selection represents an important reproductive strategy for sea turtles as it can strongly affect the development and survival of the offsprings and the reproductive fitness of the adults. In this study we analyzed the nest site selection of loggerhead and leatherback turtles and the factors correlated with that selection at Inhaca Island. The spatial position of the nests was recorded during sea turtles nests monitoring and six nesting seasons were used. Satellite images of Inhaca were used to characterize some of the beach features that might be correlated with nest site selection. Nest distribution analysis revealed that loggerhead turtles tend to spread their nests along the entire beach, but a higher aggregation of nests was evident at the northern most section of the eastern coast. Leatherback turtles tend to nest in a restricted area, with approximately 40% nests at the central sections of the coast. Beach height was the physical variable significantly correlated to loggerhead＇s nest density （r = 0.309, N = 125, P 〈 0.01） while fin grain particles （specifically 0.125 mm grain size particles）（r = 0.399, N = 125, P 〈 0.01） and organic content （r = 0.218, N = 125, P 〈 0.05） were the variables significantly correlated to leatherback＇s nest density. No other factors investigated affected nest site selection of either species.

关键词： Spatial nest distribution nesting pattem of distribution nest site selection sea turtles factors affecting nest site selection Inhaca Island.

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Estrus Synchronization and Artificial Insemination with Fresh and Chilled Semen in Assaf Ewes

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Agricultural Sciences 2018年第1期9卷 8-22页

作者： Raquel Fornazari óscar Mateus Teresa Correia Hélder Quintas Raimundo Maurício Anderclei Conradi Lucas Francisco armindo álvaro Ramiro Valentim Federal Technology University of Paraná Campus of Dois Vizinhos Dois Vizinhos Brasil Department of Animal Science Agrarian Superior School of Braganza Braganza Portugal Mountain Investigation Center Polytechnic Institute of Braganza Braganza Portugal Polytechnic Superior Institute of Kwanza Sul Sumbe Angola

This paper aims to study the efficiency of two short-term progestagen (FGA vs. MAP) + eCG treatments in estrus synchronization and artificial insemination (AI) with fresh or chilled semen in Assaf ewes fertility rate. All ewes received a subcutaneous implant of exogenous melatonin 45 days before been treated with short-term progestagens + eCG. By June 1st, ewes were divided in two groups: half was treated with an intravaginal sponge impregnated with 20 mg of FGA and the other half with an intravaginal sponge impregnated with 60 mg of MAP. Progestagen treatments lasted for 6 days. At sponge withdraw, all ewes were injected with 750 IU of eCG. Ovarian activity was assessed by plasmatic progesterone levels before and after progestagens + eCG treatment. Semen was collected by electro ejaculation and extended with Andromed? or OviXcell?. AI was performed 55 hours after eCG administration with fresh or chilled semen. During AI several factors were assessed: vagina mucosa color and lubrication, external cervical Os type, cervical mucous viscosity, semen deposition place and seminal cervix outflow. Semen was deposited as deep as possible without distress or trauma cervix mucosa. All Assaf ewes presented cyclic activity before progestagen + eCG treatments (2nd fortnight of May). Short-term progestagen + eCG treatments were equally efficient (100.0%). About 76.5% of Assaf ewes were pregnant 41 days after AI. Fertility rate was influenced by external Os type, semen deposition place and seminal cervix outflow. However, this rate was not conditioned by vaginal color or lubrication, cervical mucus viscosity, semen preservation technic and semen extender.

关键词： Sheep Assaf Estrus Synchronization Artificial Insemination

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Evaluation of Thromboprophylaxis Practice in Hospitalized Patients in the Medical Department of Saint Jean de Dieu Hospital of Thies, Senegal

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World Journal of Cardiovascular Diseases 2020年第5期10卷 313-318页

作者： Désiré Alain Affangla Korko Sélalom Lynda Adomayakpor Stéphanie Akanni Jean-Michel Amath Dione Hugues Elie Elame Ngwa Djibril Marie Ba Mohamed Leye Joao armindo Da Veiga Bernard Marcel Diop Hôpital Saint Jean de Dieu Thiès Sénégal Unité de Formation et de Recherche des sciences de la santé Université de Thiès Thiès Sénégal

Introduction: Venous thromboembolism disease (VTE) is a common complication of hospitalization. Objective: To assess the practice of thromboprophylaxis in hospitalized patients in the department of medicine. Patients and Methods: It is an observational cross-sectional study conducted from 01 February to 31 March 2019 in the medical departments of the Saint Jean de Dieu Hospital of Thies. All the patients hospitalized with at least 18 years of age were included. The thromboembolic risk was assessed with the Padua score and thromboprophylaxis?assessed according to the ACCP 2012 recommendations. Results: One hundred and forty four patients were included. Seventy-one (49.3%) were in the high thromboembolic risk category. The most frequently reported risk factors were mobility impairment (n = 72;50%), age of 70 years or above (n = 35;24.3%), heart failure (n = 23;16%), acute infections (n = 14;9.7%) and cancers (n = 13;9.02%). The prevention of venous thromboembolism was practiced in 25 of the 71 patients with high thromboembolic risk or a rate of 35.2%. Thromboprophylaxis was exclusively drug-based with Enoxaparin. Conclusion: The practice of prophylaxis for VTE was low in the medical departments. Efforts still need to be made to reduce the high rate of thromboembolic complications associated with hospitalization.

关键词： Venous Thromboembolism Disease Thromboprophylaxis Heparin

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Logistic Optimization in Tourism Networks

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Journal of Traffic and Transportation Engineering 2022年第1期10卷 19-34页

作者： armindo Frias João Cabral Álvaro Costa ADVANCE/CSG(Advanced Research Centre in Management/Research in Social Sciences and Management) CINAV-Naval Research CentreISEG(Lisbon School of Economics&Management)Lisbon UniversityLisbonPortugal CIMA/UE-Research Centre in Mathematics and Applications ofÉvora University UAC-Azores UniversityPonta DelgadaPortugal Research Centre for Territory Transports and EnvironmentFEUP-Faculty of Engineering of the Porto UniversityPortoPortugal

Tourism is one of the activities with high benefits on the development and for many regions,enabling the integration of local populations and *** our natural laboratory,the Azores Island of São Miguel,an important share of tourists identifies adventure,leisure and touch with nature,as the main reasons for the *** use of footpaths can contribute to the satisfaction of tourists,promoting tourism and the region’s development during their movements on the tourism network,tourists appreciate different types of attractions and need the support of a set of *** decisions are not always done in a rational way,emotions add even more complexity to the human decision *** movement of tourists within a destination depends on factors related to tourist characteristics,like the time budgets,preferences or destination knowledge,and destination features related to attractions characteristics or accessibility *** existence of a mathematical model that incorporates the main factors that explain the movement of independent tourists within a destination,in a dynamic way,will make possible the creation of an adaptable software *** tool will meet the specific needs of tourists,allowing the use of the network in an optimal way by the different tourist profiles,and the needs of regional government and business,allowing better decisions and the offer of relevant tourism *** article is based on the authors’previous research and identifies the relevance of tourism for regional development,finds the main tourists’mobility criteria on the study territory,using as main support for the footpath network,recognises the necessary modelling process and develops the foundation for the building of the mathematical model that explains the movement of tourists within the destination,making possible a future adaptable software tool.

关键词： Logistics mathematical modulation networks regional development tourism

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Effects of Kenneth Cyclone on Groundnut Crop (Arachis hypogaea L.) in Two Districts of Northern Mozambique

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Journal of Agricultural Science and Technology(B) 2020年第4期10卷 246-254页

作者： Ibraimo Teleha Chabite Ali Magido Florência Joaquim Cesário Evódio armindo Sábado Andate Laboratory of Quality and Food Safety(LQSA) Lúrio Interdisciplinary Study Center(CEIL)Lúrio UniversityStreet No.4250NampulaMozambique HELVETAS Swiss Intercooperation Parque dos ContinuadoresNo.31Nampula OfficeMozambique Researcher and Independent Consultant Muhala ExpansãoStreet No.3NampulaMozambique

In Mozambique,groundnut(Arachis hypogaea L.)in terms of importance is the third crop after maize(Zea mays L.)and cassava(Manihot esculenta).But due to geographical location,the country suffers major impacts of climate change and natural phenomena that also influence the production of this *** recent Kenneth cyclone that has affected Northern Mozambique,Cabo Delgado and Nampula provinces,is an example of such *** study aimed to evaluate the effects of Kenneth cyclone on groundnut cultivation in Eráti and Meconta districts in Nampula *** research used a questionnaire with closed and open questions to collect data from 31 producers and five traders in Eráti and Meconta *** on the data the sum of the overall average production losses between the two districts was approximately 60%,in which Eráti lost 52%and Meconta 67%of the total production expected for *** biggest impact was the loss of unharvested groundnut germination and the deterioration of the groundnut in the field while *** cyclone created appropriate conditions for the proliferation of fungus causing aflatoxin,Aspergillus *** collected for laboratory analysis showed high levels of total aflatoxins,some 269.4 ppb in Meconta and 148.3 ppb in Erá*** purchase price of groundnut in Eráti during this period varied naturally based on product quality,with 0.8 US$/kg of groundnut that looks good quality(without the presence of fungus or mould,insect damage,rotten and germinated nuts)and 0.6 US$/kg for the poor quality(presence of fungus or mould,insect damage,rotten and germinated nuts).Kenneth cyclone affected the expectations of farmers in groundnut yields in the 2018/2019 season.

关键词： Groundnut Kenneth cyclone aflatoxin Mozambique

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