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不同时期节水灌溉对水稻农艺性状及产量的影响

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天津农学院学报 2016年第2期23卷 15-20页

作者：曲红岩张欣崔中秋楠谷彰人松江勇次崔晶施利利天津农学院农学与资源环境学院天津300384 爱媛大学大学院连合农学研究科九州大学大学院农学研究院

为明确水稻不同生育时期的农艺性状及产量性状受节水处理的影响,以＂津原E28＂、＂津稻417＂为试验材料,通过人工控制水分灌溉量,在水稻不同生育时期进行节水处理,探究不同时期节水后水稻农艺性状及产量性状的变化规律。结果表明：在水... 详细信息

为明确水稻不同生育时期的农艺性状及产量性状受节水处理的影响,以＂津原E28＂、＂津稻417＂为试验材料,通过人工控制水分灌溉量,在水稻不同生育时期进行节水处理,探究不同时期节水后水稻农艺性状及产量性状的变化规律。结果表明：在水稻生长发育的各时期节水均会在不同程度上影响水稻的产量,主要制约因素为穗数和千粒重,各处理间产量降低幅度为14%~39%、12%~27%。节水处理对穗数、每穗粒数、杆长、穗长、实粒率和千粒重的影响均达到0.1%水平上的显著差异。拔节期至孕穗期节水,水稻每穗粒数、千粒重、产量下降最为明显;返青至分蘖期的节水处理,水稻的分蘖数和有效穗数均最低;出穗至灌浆期的节水处理实粒率最低。

关键词：水稻节水灌溉农艺性状产量

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收获期对优质稻米产量及食味的影响

天津农学院学报 2018年第4期25卷 17-23页

作者：吕文俊王志玺张欣李萍崔晶松江勇次楠谷彰人崔中秋天津农学院农学与资源环境学院天津300384 九州大学香川大学天津市农作物研究所天津300384

为提升水稻栽培技术,改进水稻收获期的食味品质,以‘津川1号’‘津原E28’和‘津原45’3个品种为试验材料,分析收获期对水稻产量和食味品尝试验的影响,同时进行了出穗至收获期积温和产量、产量构成要素、理化学特性、糊化特性、物化特... 详细信息

为提升水稻栽培技术,改进水稻收获期的食味品质,以‘津川1号’‘津原E28’和‘津原45’3个品种为试验材料,分析收获期对水稻产量和食味品尝试验的影响,同时进行了出穗至收获期积温和产量、产量构成要素、理化学特性、糊化特性、物化特性、水分及食味品质的相关性研究,旨在明确优质水稻品种最佳收获期。结果表明:在保证稻谷水分不低于15%条件下,收获期的食味品尝试验综合评价值与出穗至收获积温之间呈显著正相关(P≤0.05);适当延迟收获期,可提升水稻食味。根据并行试验移栽期对水稻产量及食味的影响,应在适当延迟移栽期的基础上,确定最佳收获时期,确保水稻的高产和优质。

关键词：水稻栽培食味(蒸煮)品质产量水分理化学特性

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稻米品质的相关性分析

天津农学院学报 2018年第3期25卷 9-15,33页

作者：王志玺吕文俊崔晶黄亮张欣楠谷彰人松江勇次崔中秋天津农学院农学与资源环境学院天津300384 天津市食味水稻国际联合研究中心天津300384 香川大学九州大学大学院农学研究院天津市农业科学院天津300384

为深入研究稻米品质食味特性,本研究系统地探讨了影响品质食味的因素与综合评价值之间的相关性,以期为加速推进优质食味水稻品种(系)的选育提供相应的理论依据和技术参考。试验采用8个水稻品种(系)进行了稻米理化特性的测定,分析了糙米... 详细信息

为深入研究稻米品质食味特性,本研究系统地探讨了影响品质食味的因素与综合评价值之间的相关性,以期为加速推进优质食味水稻品种(系)的选育提供相应的理论依据和技术参考。试验采用8个水稻品种(系)进行了稻米理化特性的测定,分析了糙米的外观品质、精米的蛋白质含有率、直链淀粉含有率、米饭的物化特性、稻米淀粉的糊化特性等指标。结果表明:综合评价值与糙米的外观品质、精米的蛋白质含有率、直链淀粉含有率、米饭的物化特性、稻米淀粉的糊化特性等存在不同程度的相关性,但这些理化指标与综合评价值之间相关性并不显著(P>0.05)。表明稻米的各理化指标并不能准确地反映最终的食味品质。

关键词：水稻加工品质外观品质营养品质食味(蒸煮)品质贮藏品质

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移栽期对优质稻米产量及食味的影响

天津农学院学报 2018年第3期25卷 1-8页

作者：吕文俊王志玺张欣李萍崔晶赵飞松江勇次楠谷彰人崔中秋天津农学院农学与资源环境学院天津300384 香川大学日本香川761-0795 九州大学日本福冈812-8581 天津市农作物研究所天津300384

为明确优质水稻的最佳移栽期,探讨移栽期对优质水稻品质的影响,丰富优质水稻栽培技术的应用依据,提高优质水稻栽培技术,按照现行的天津移栽时期提前或推迟移栽期,进行产量和产量构成要素的调查,同时进行糊化特性和食味品尝试验,并结合... 详细信息

为明确优质水稻的最佳移栽期,探讨移栽期对优质水稻品质的影响,丰富优质水稻栽培技术的应用依据,提高优质水稻栽培技术,按照现行的天津移栽时期提前或推迟移栽期,进行产量和产量构成要素的调查,同时进行糊化特性和食味品尝试验,并结合移栽至出穗期积温对产量及产量构成要素和食味品质特性的影响分析,对‘津川1号’、‘津原E28’和‘津原45’3个品种进行移栽期试验,分析了移栽期至出穗期积温和产量、产量构成要素、糊化特性及食味品尝试验综合评价值之间的相关性,旨在获得天津地区优质水稻栽培技术的理论基础和数据支撑。结果表明:食味品尝试验的综合评价值与移栽至出穗积温之间呈极显著性负相关(P≤0.001);移栽期的推迟导致产量降低,但水稻食味品质得到相应提高。因此,适当推迟移栽期有利于提高优质水稻食味品质。

关键词：水稻栻培食味品质产量产量极成要素

PIV Measurements of Flows around the Wind Turbines with a Flanged-Diffuser Shroud

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Journal of Thermal Science 2008年第4期17卷 375-380页

作者： Kazuhiko Toshimitsu Koutarou Nishikawa Wataru Haruki Shinichi Oono Manabu Takao yuji Ohya Dept.of Mechanical Engineering Oita National College of Technology Kawasaki Precision Machinery Ltd. Honda Motor Co. Ltd. Machine & Electronics Co. Ltd. Dept.of Mechanical Engineering Matsue National Collage of Technology Research Institute of Applied Mechanics Kyushu University

The wind turbines with a flanged-diffuser shroud -so called ＂wind lens turbine＂- are developed as one of high performance wind turbines by Ohya et al. In order to investigate the flow characteristics and flow acceleration, the paper presents the flow velocity measurements of a long-type and a compact-type wind turbines with a flanged-diffuser shroud by particle image velocimetry. In the case of the long type wind turbine, the velocity vec- tors of the inner flow field of the diffuser for turbine blades rotating and no blades rotating are presented at Rey- nolds number, 0.9x105. Fur^thermore the flow fields between with and without rotating are compared. Through the PIV measurement results, one can realize that the turbine blades rotating affects as suppress the disturbance and the flow separation near the inner wall of the diffuser. The time average velocity vectors are made on the av- erage of the instantaneous velocity data. There are two large vortices in downstream region of the diffuser. One vortex behind the flange acts as suck in wind to the diffuser and raise the inlet flow velocity. Another large vortex appears in downstream. It might be act as blockage vortex of main flow. The large blockage vortex is not clear in the instantaneous velocity vectors, however it exists clearly in the time average flow field. The flow field around the wind turbine with a compact-type flanged-diffuser shroud is also investigated. The flow pattern behind the flange of the compact-type turbine is the same as the long-type one. It means that the effect of flow acceleration is caused by the unsteady vortices behind the flange. The comparison with CFD and PIV results of meridional time-average streamlines after the compact-type diffuser is also presented.

关键词： wind turbine PIV wind energy flanged diffuser flow visualization

Decline in subarachnoid haemorrhage volumes associated with the first wave of the COVID- 19 pandemic

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Stroke & Vascular Neurology 2021年第4期6卷 542-552,I0026-I0032页

作者： Thanh N Nguyen Diogo C Haussen Muhammad M Qureshi Hiroshi Yamagami Toshiyuki Fujinaka Ossama Y Mansour Mohamad Abdalkader Michael Frankel Zhongming Qiu Allan Taylor Pedro Lylyk Omer F Eker Laura Mechtouff Michel Piotin Fabricio Oliveira Lima Francisco Mont'Alverne Wazim Izzath Nobuyuki Sakai Mahmoud Mohammaden Alhamza R Al-Bayati Leonardo Renieri Salvatore Mangiafico David Ozretic Vanessa Chalumeau Saima Ahmad Umair Rashid Syed Irteza Hussain Seby John Emma Griffin John Thornton Jose Antonio Fiorot Rodrigo Rivera Nadia Hammami Anna M Cervantes-Arslanian Hormuzdiyar H Dasenbrock Huynh Le Vu Viet Quy Nguyen Steven Hetts Romain Bourcier Romain Guile Melanie Walker Malveeka Sharma Don Frei Pascal Jabbour Nabeel Herial Fawaz Al-Mufti Atilla Ozcan Ozdemir Ozlem Aykac Dheeraj Gandhi Chandril Chugh Charles Matouk Pascale Lavoie Randall Edgell Andre Beer-Furlan Michael Chen Monika Killer-Oberpfalzer Vitor Mendes Pereira Patrick Nicholson Vikram Huded Nobuyuki Ohara Daisuke Watanabe Dong Hun Shin Pedro SC Magalhaes Raghid Kikano Santiago Ortega-Gutierrez Mudassir Farooqui Amal Abou-Hamden Tatsuo Amano Ryoo Yamamoto Adrienne Weeks Elena A Cora Rotem Sivan-Hoffmann Roberto Crosa Markus Möhlenbruch Simon Nagel Hosam Al-Jehani Sunil A Sheth Victor S Lopez Rivera James E Siegler Achmad Fidaus Sani Ajit S Puri Anna Luisa Kuhn Gianmarco Bernava Paolo Machi Daniel G Abud Octavio M Pontes-Neto Ajay K Wakhloo Barbara Voetsch Eytan Raz Shadi Yaghi Brijesh P Mehta Naoto Kimura Mamoru Murakami Jin Soo Lee Ji Man Hong Robert Fahed Gregory Walker Eiji Hagashi Steve M Cordina Hong Gee Roh Ken Wong Juan F Arenillas Mario Martinez-Galdamez Jordi Blasco Alejandro Rodriguez Vasquez Luisa Fonseca M Luis Silva Teddy Y Wu Simon John Alex Brehm Marios Psychogios William J Mack Matthew Tenser Tatemi Todaka Miki Fujimura Roberta Novakovic Jun Deguchi Yuri Sugiura Hiroshi Tokimura Rakesh Khatri Michael Kelly Lissa Peeling Yuichi Murayama Hugh Stephen Winters Johnny Wong Mohamed Teleb Jeremy Payne Hiroki Fukuda Kosuke Miyake Junsuke Shimbo Yusuke Sug Neurology RadiologyBoston Medical CenterBostonMassachusettsUSA Neurology Marcus Stroke&Neuroscience CenterGrady Memorial HospitalEmory University School of MedicineAtlantaGAUSA Radiology Radiation OncologyBoston University School of MedicineBostonMassachusettsUSA Neurology National Hospital Organization Osaka National HospitalOsakaJapan Neurosurgery National Hospital Organization Osaka National HospitalOsakaJapan Neurology Alexandria UniversityAlexandriaEgypt Radiology Boston Medical CenterBostonMassachusettsUSA Department of Neurology Xinqiao HospitalChongqingChina Neurosurgery University of Cape TownRondeboschWestern CapeSouth Africa Neurosurgery Interventional NeuroradiologyClinica La Sagrada FamiliaBuenos AiresArgentina Neuroradiologie Neurologie VasculaireHospices Civils de LyonLyonAuvergne-Rhône AlpesFrance Neurologie Vasculaire Hospices Civils de LyonLyonAuvergne-Rhône AlpesFrance Interventional Neuroradiology Fondation Ophtalmologique Adolphe de RothschildParisÎle-de FranceFrance Neurology Hospital Geral de FortalezaFortalezaBrazil Interventional Neuroradiology Hospital Geral de FortalezaFortalezaBrazil Neuroradiology Nottingham University Hospitals NHS TrustNottinghamUK Department of Neurosurgery Kobe City Medical Center General HospitalKobeHyogoJapan Interventional Neurovascular Unit University Hospital CareggiFirenzeToscanaItaly Neuroradiology University Hospital Centre ZagrebZagrebCroatia Interventional Neuroradiology Hopital BicetreLe Kremlin-BicetreFrance Stroke and Interventional Neuroradiology Lahore General HospitalLahorePakistan Neurological Institute Cleveland Clinic Abu DhabiAbu DhabiUAE Department of Radiology Beaumont HospitalDublinIreland Neurology Stroke UnitHospital-Estadual CentralVitoriaBrazil Neuroradiology Instituto de Neurocirugia Dr AsengoSantiagoChile Interventional Neuroradiology Institut National de NeurologieTunisTunisia Neurology Boston Medical CenterBostonMassachusettsUSA Neurosurgery Boston Medical Center

Background During the COVID-19 pandemic,decreased volumes of stroke admissions and mechanical thrombectomy were *** study’s objective was to examine whether subarachnoid haemorrhage(SAH)hospitalisations and ruptured aneurysm coiling interventions demonstrated similar *** We conducted a cross-sectional,retrospective,observational study across 6 continents,37 countries and 140 comprehensive stroke *** with the diagnosis of SAH,aneurysmal SAH,ruptured aneurysm coiling interventions and COVID-19 were identified by prospective aneurysm databases or by International Classification of Diseases,10th Revision,*** 3-month cumulative volume,monthly volumes for SAH hospitalisations and ruptured aneurysm coiling procedures were compared for the period before(1 year and immediately before)and during the pandemic,defined as 1 March-31 May *** prior 1-year control period(1 March-31 May 2019)was obtained to account for seasonal *** There was a significant decline in SAH hospitalisations,with 2044 admissions in the 3 months immediately before and 1585 admissions during the pandemic,representing a relative decline of 22.5%(95%CI−24.3%to−20.7%,p<0.0001).Embolisation of ruptured aneurysms declined with 1170-1035 procedures,respectively,representing an 11.5%(95%CI−13.5%to−9.8%,p=0.002)relative *** analysis was noted for aneurysmal SAH hospitalisation decline from 834 to 626 hospitalisations,a 24.9%relative decline(95%CI−28.0%to−22.1%,p<0.0001).A relative increase in ruptured aneurysm coiling was noted in low coiling volume hospitals of 41.1%(95%CI 32.3%to 50.6%,p=0.008)despite a decrease in SAH admissions in this *** There was a relative decrease in the volume of SAH hospitalisations,aneurysmal SAH hospitalisations and ruptured aneurysm embolisations during the COVID-19 *** findings in SAH are consistent with a decrease in other emergencies,such as stroke and myocardial infarction.

关键词： diagnosis representing subarachnoid