维普中文期刊产品整合服务
81篇 您的检索式:作者名="Pouria"
    题名 作者 年代 出处 被引量
1Global Wheat Head Detection(GWHD)Dataset:A Large and Diverse Dataset of High-Resolution RGB-Labelled Images to Develop and Benchmark Wheat Head Detection Methods显示文摘The detection of wheat heads in plant images is an important task for estimating pertinent wheat traits including head population density and head characteristics such as health,size,maturity stage,and the presence of awns.Several studies have developed methods for wheat head detection from high-resolution RGB imagery based on machine learning algorithms.However,these methods have generally been calibrated and validated on limited datasets.High variability in observational conditions,genotypic differences,development stages,and head orientation makes wheat head detection a challenge for computer vision.Further,possible blurring due to motion or wind and overlap between heads for dense populations make this task even more complex.Through a joint international collaborative effort,we have built a large,diverse,and well-labelled dataset of wheat images,called the Global Wheat Head Detection(GWHD)dataset.It contains 4700 high-resolution RGB images and 190000 labelled wheat heads collected from several countries around the world at different growth stages with a wide range of genotypes.Guidelines for image acquisition,associating minimum metadata to respect FAIR principles,and consistent head labelling methods are proposed when developing new head detection datasets.The GWHD dataset is publicly available at http://gffzzef49fa24bca249bbh90kwqxcu50w06bou.ffgz.tsg.suse.edu.cn/and aimed at developing and benchmarking methods for wheat head detection.Etienne David Simon Madec Pouria Sadeghi-Tehran Helge Aasen Bangyou Zheng Shouyang Liu Norbert Kirchgessner Goro Ishikawa Koichi Nagasawa Minhajul A.Badhon Curtis Pozniak Benoit de Solan Andreas Hund Scott C.Chapman Frédéric Baret Ian Stavness Wei Guo 2020Plant Phenomics2020,2,1:13
2Aging: A cell source limiting factor in tissue engineering显示文摘Tissue engineering has yet to reach its ideal goal,i.e.creating profitable off-theshelf tissues and organs,designing scaffolds and three-dimensional tissue architectures that can maintain the blood supply,proper biomaterial selection,and identifying the most efficient cell source for use in cell therapy and tissue engineering.These are still the major challenges in this field.Regarding the identification of the most appropriate cell source,aging as a factor that affects both somatic and stem cells and limits their function and applications is a preventable and,at least to some extents,a reversible phenomenon.Here,we reviewed different stem cell types,namely embryonic stem cells,adult stem cells,induced pluripotent stem cells,and genetically modified stem cells,as well as their sources,i.e.autologous,allogeneic,and xenogeneic sources.Afterward,we approached aging by discussing the functional decline of aged stem cells and different intrinsic and extrinsic factors that are involved in stem cell aging including replicative senescence and Hayflick limit,autophagy,epigenetic changes,miRNAs,mTOR and AMPK pathways,and the role of mitochondria in stem cell senescence.Finally,various interventions for rejuvenation and geroprotection of stem cells are discussed.These interventions can be applied in cell therapy and tissue engineering methods to conquer aging as a limiting factor,both in original cell source and in the in vitro proliferated cells.Mohammadhossein Khorraminejad-Shirazi Mohammadreza Dorvash Alireza Estedlal Amir Human Hoveidaei Mohsen Mazloomrezaei Pouria Mosaddeghi 2019World Journal of Stem Cells2019,11,10:4
3Propane catalytic cracking on pretreated La-ZSM-5 zeolite during calcination for light olefins production显示文摘The purpose of this study was to increase light olefins yield and selectivity in catalytic cracking of propane. Pretreatment of ZSM-5 zeolite was performed during calcination. First, lanthanum was loaded on the catalyst by wet impregnation method and then the effect of parameters, such as temperature(400–800 oC), time(120–480 min) and type of stream, on La-ZSM-5 zeolite was examined during calcination using central composite design(CCD) method. Based on the proposed models, the optimized condition for maximizing selectivity of light olefins for air stream was 680 oC and 310 min and for the nitrogen stream was 735 oC and 173 min that under these conditions, selectivity amount increased 24% for nitrogen stream and 19% for air stream as compared with H-ZSM-5 catalyst. The synthesized catalysts were characterized by X-ray diffraction(XRD) and temperature-programmed desorption(TPD) techniques. According to the results of NH_3-TPD, as the temperature increased, the number of strong acid sites(specially Bronsted acid sites) reduced and resulted in increased production of light olefins as well as catalyst stability. Accordingly, stability of the samples calcined with nitrogen stream was higher than the samples calcined with the air stream.Roya Pouria Leyla Vafi Ramin Karimzadeh 2017Journal of Rare Earths2017,35,6:4
4Global Wheat Head Detection 2021:An Improved Dataset for Benchmarking Wheat Head Detection Methods显示文摘The Global Wheat Head Detection(GWHD)dataset was created in 2020 and has assembled 193,634 labelled wheat heads from 4700 RGB images acquired from various acquisition platforms and 7 countries/institutions.With an associated competition hosted in Kaggle,GWHD_2020 has successfully attracted attention from both the computer vision and agricultural science communities.From this first experience,a few avenues for improvements have been identified regarding data size,head diversity,and label reliability.To address these issues,the 2020 dataset has been reexamined,relabeled,and complemented by adding 1722 images from 5 additional countries,allowing for 81,553 additional wheat heads.We now release in 2021 a new version of the Global Wheat Head Detection dataset,which is bigger,more diverse,and less noisy than the GWHD_2020 version.Etienne David Mario Serouart Daniel Smith Simon Madec Kaaviya Velumani Shouyang Liu Xu Wang Francisco Pinto Shahameh Shafiee Izzat SATahir Hisashi Tsujimoto Shuhei Nasuda Bangyou Zheng Norbert Kirchgessner Helge Aasen Andreas Hund Pouria Sadhegi-Tehran Koichi Nagasawa Goro Ishikawa Sébastien Dandrifosse Alexis Carlier Benjamin Dumont Benoit Mercatoris Byron Evers Ken Kuroki Haozhou Wang Masanori Ishii Minhajul ABadhon Curtis Pozniak David Shaner LeBauer Morten Lillemo Jesse Poland Scott Chapman Benoit de Solan Frédéric Baret Ian Stavness Wei Guo 2021Plant Phenomics2021,3,1:2
5Determination of safe mud window considering time-dependent variations of temperature and pore pressure:Analytical and numerical approaches显示文摘Wellbore stability is a key to have a successful drilling operation.Induced stresses are the main factors affecting wellbore instability and associated problems in drilling operations.These stresses are significantly impacted by pore pressure variation and thermal stresses in the field.In order to address wellbore instability problems,it is important to investigate the mechanisms of rockefluid interaction with respect to thermal and mechanical aspects.In order to understand the induced stresses,different mathematical models have been developed.In this study,the field equations governing the problem have been derived based on the thermo-poroelastic theory and solved analytically in Laplace domain.The results are transferred to time domain using Fourier inverse method.Finite difference method is also utilized to validate the results.Pore pressure and temperature distributions around the wellbore have been focused and simulated.Next,induced radial and tangential stresses for different cases of cooling and heating of formation are compared.In addition,the differences between thermo-poroelastic and poroelastic models in situation of permeable and impermeable wellbores are described.It is observed that cooling and pore pressure distribution reinforce the induced radial stress.Whereas cooling can be a tool to control and reduce tangential stress induced due to invasion of drilling fluid.In the next step,safe mud window is obtained using Mohr-Coulomb,Mogi-Coulomb,and modified Lade failure criteria for different inclinations.Temperature and pore pressure distributions do not change the minimum allowable wellbore pressure significantly.However,upper limit of mud window is sensitive to induced stresses and it seems vital to consider changes in temperature and pore pressure to avoid any failures.The widest and narrowest mud windows are proposed by modified Lade and Mohr-Coulomb failure criteria,respectively.Alireza Gholilou Pouria Behnoud far Stephanie Vialle Mahyar Madadi 2017Journal of Rock Mechanics and Geotechnical Engineering2017,9,5:2
6Infectome: A platform to trace infectious triggers of autoimmunity显示文摘Dimitrios P. Bogdanos Daniel S. Smyk Pietro Invernizzi Eirini I. Rigopoulou Miri Blank Shideh Pouria Yehuda Shoenfeld 2013Autoimmunity Reviews2013,,7:2
7Design aspect of a novel L-shaped pulsed column for liquid–liquid extraction applications: Energy consumption and the characteristics velocity concept显示文摘This article deals with the evaluation of the consumption of energy for a steady state solvent extraction in a novel L-shaped pulsed sieve-plate column, which is highly required for design and optimization of the periodic flow processes for industrial applications. In this regard, a comprehensive evaluation on the energy consumption in case of a pulsed flow for three different chemical systems is conducted and besides the influence of pulsation intensity, the effect of geometrical parameters including the plate spacing and the plate free area is investigated as well. Moreover, the concept of characteristic velocity models at flooding points is evaluated with respect to the variation of pressure drop along the column at different operational conditions.Pouria Amani Elham Mohammadi Sahar Akhgar 2018Chinese Journal of Chemical Engineering2018,26,4:2
8Experimental study of a heavy fuel oil atomization by pressure-swirl injector in the application of entrained flow gasifier显示文摘The available SMD(Sauter mean diameter) correlations on pressure-swirl injectors predict droplet sizing very different from each other, especially for heavy fuels. Also there was a lack in the literature for comparing available correlations. So an experimental study was conducted on a heavy fuel oil(HFO) spray, Mazut 380. A pressure swirl injector was designed and fabricated. The experiments for Mazut at 40℃ and 80℃ were compared with the results for water, including spray half cone angle, breakup length and mean droplet diameter,at different injection pressures. Lower spray angle, higher breakup length and larger droplets were observed for lower injection pressures and higher liquid viscosity. SMD was about 75 μm for water and about 87 μm for Mazut at 80℃. The results for droplet mean diameter were also compared with correlations from previous studies on pressure swirl atomizers. The SMD results show that for water spray, LISA method was in good agreement,also Babu and Ballester correlations were successful when high viscosity fluid was injected.Pouria Mikaniki Seyed Mohammad Ali Najafi Hojat Ghassemi 2019Chinese Journal of Chemical Engineering2019,27,4:2
9Fatal microcystin intoxication in haemodialysis unit in Caruaru, Brazil显示文摘Pouria S de Andrade A Barbosa J 1998Lancet1998,352,:1
10Fatal microcystin intoxication in haemodialysis unit in Caruaru, Brazil 显示文摘POURIA S DE ANDRADE A BARBOSA J 1998Lancet1998,352,9121:1
11Nonperturbative effects of the minimal length uncertainty on the relativistic quantum mechanics显示文摘Pouria Pedram 2012Phys Lett B2012,710,:1
12SEPS聚合物改性沥青车辙特性显示文摘沥青作为胶结料,其在高温条件下抗永久变形的能力显著影响着路面整体的抗车辙能力。研究人员使用各种改性剂和添加剂来提高沥青抗永久变形的能力,例如SBS、EVA、PVA、SBR和天然橡胶等。该文采用Superpave规范中的参数G*/sinδ和基于Cross模型计算得到的零剪切粘度ZSV两种评价方法,评价SEPS对沥青抗永久变形能力的改善效果。在40、50和60℃试验温度下,对基质沥青和改性沥青进行动态剪切流变仪(DSR)频率扫描试验,利用上述两种方法可以确定改性沥青的抗车辙效果,并以基质沥青的抗车辙数据为对照,对其进行归一化处理,计算SEPS改性沥青抗车辙性能的提高比例。两种评价方法研究结果表明:SEPS都可以显著改善沥青的抗车辙性能,但是不同的评价方法得到的结论并不完全相同。刘宽河(译) 袁媛(译) 栾传宝(译) Mohammad Rahi Ellie H.Fini M.ASCE Pouria Hajikarimi Fereidoon Moghadas Nejad 2016中外公路2016,36,3:1
13Fatal microcystin intoxication in haemodialysis unit in Caruaru, Brazil显示文摘POURIA S ANDRADE A D BARBOSA J 1998The Lancet1998,352,3:1
14CMV infection is associated with transplant renal artery stenosis 显示文摘 State OI Wong W 1998QJM1998,91,3:1
15Fatal rnicrocystin in- toxication in haemodialysis unit in Caruaru, Brazil 显示文摘Pouria S De Andrade A Barbosa J 1998Lancet1998,352,9121:1
16Quality assessment of OpenStreetMap data using trajectory mining显示文摘OpenStreetMap(OSM)data are widely used but their reliability is still variable.Many contributors to OSM have not been trained in geography or surveying and consequently their contributions,including geometry and attribute data inserts,deletions,and updates,can be inaccurate,incomplete,inconsistent,or vague.There are some mechanisms and applications dedicated to discovering bugs and errors in OSM data.Such systems can remove errors through user-checks and applying predefined rules but they need an extra control process to check the real-world validity of suspected errors and bugs.This paper focuses on finding bugs and errors based on patterns and rules extracted from the tracking data of users.The underlying idea is that certain characteristics of user trajectories are directly linked to the type of feature.Using such rules,some sets of potential bugs and errors can be identified and stored for further investigations.Anahid Basiri Mike Jackson Pouria Amirian Amir Pourabdollah Monika Sester Adam Winstanley Terry Moore Lijuan Zhang 2016Geo-Spatial Information Science2016,19,1:1
17Fatal mieroeystin intoxication in haemodialysis unit in Caruaru, Brazil显示文摘Pouria S de-Andrade A Barbosa J 1998Lancet1998,352,:1
18Atlas of heating:Identifying regional climate-dependent heat demands in residential buildings of Iran显示文摘Due to different latitudes and variation of altitude in geographical areas in Iran,the climatic conditions of Iran are such that the variations of the heating degree-days(HDD)are in a broad range of 60 to 3000 for residential buildings in different climatic regions.In addition,in many cases,the building design and construction processes follow patterns which do not necessarily meet national energy requirements and standards.Based on these two reasons,it is essential to identify the current status of energy consumption indicators in residential buildings.That way,it gets more convenient to adopt new strategies to improve the current state of energy consumption of buildings.In this study,heating energy consumption indices of residential buildings is investigated.Using the combination of the results of statistical data analysis,questionnaires,filled in for 500 buildings,and a reference building simulation in different climates of Iran,the heating atlas of residential buildings was prepared.According to the results,the average heating energy index(HE1)of buildings in Iran can be less than 1 to more than 41.3(m^(3)(N.G)/(m^(2)-yr))depending on climatic conditions and building design and construction quality.However,in the coldest center of province,the average of this index is 26.3(m^(3)(N.G)/(m^(2)-yr))in the hottest one that is equal 2.2.The variations of the thermal base load(supply of hot water)varied from less than 13.12 to more than 378.84(m^(3)(N.G)/(person-yr)).In provincial capitals,the lowest thermal base load index(TBLI)of buildings is 24.78 and the highest is 226.49(m^(3)(N.G)/(person-yr)).In this paper,beside charts and tables,results of heating energy consumption indices are also presented in the form of graphical atlases,i.e.color contour plots,to deliver a better picture of the whole country.Pouria Orouji Ramin Hajian Mojgan Moradi Saeed Mohaghegh Kamran Keynejad Mostafa Sefidgar 2021Building Simulation2021,14,3:1
19Fatal microeystin intoxication in haemolialysis unit in Caruaru, Brazil显示文摘POURIA S ANDRADE A BARBOSA J 1998The Lancet1998,,352:1
20Fatal microcystin intoxication in haemodialysis unit in Caruaru, Brazil 显示文摘Pouria S D E Andrade A Barbosa J 1998Lancet1998,352,:1
返回顶部 每页显示:
共5页 首页 上一页 第1页 下一页 末页 /5 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费