检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

作物模型输入变量的敏感性分析

中国农业科学 2002年第10期35卷 1208-1214页

作者：谢云,James r.Kiniry,jimmy r.williams,陈友民,林而达北京师范大学环境演变与自然灾害教育部重点实验室美国农业部农业研究局草原水土研究实验室美国农业部农业研究局草原水土研究实验室中国农业科学院农业气象研究所中国农业科学院农业气象研究所北京100875 德克萨斯州76502 德克萨斯州76502 北京100081 北京100081

运行作物模型需要大量的输入变量。为了方便模型用户建立模型变量数据库 ,研究估计了作物模型 ALMANAC主要模型输入变量的重要程度。根据在美国德克萨斯州 8个县主要玉米品种的田间试验资料 ,首先建立了模拟 10年 (1989～ 1998年 )玉... 详细信息

运行作物模型需要大量的输入变量。为了方便模型用户建立模型变量数据库 ,研究估计了作物模型 ALMANAC主要模型输入变量的重要程度。根据在美国德克萨斯州 8个县主要玉米品种的田间试验资料 ,首先建立了模拟 10年 (1989～ 1998年 )玉米和高粱产量的标准数据库 ,模拟结果与实产吻合程度很好。以此为基础 ,分别分析了产量对太阳辐射、降雨、土壤层厚度、土壤有效水分以及径流曲线数变化的敏感性。结果表明 ,径流曲线数变化对于模拟结果的影响最大 ,其次分别是降雨和太阳辐射。玉米对所有变量变化的敏感性都大于高粱。获得合适的降雨资料 ,准确估计径流曲线数 ,对于作物生长模拟十分重要。

关键词：高粱玉米敏感性分析作物模拟径流曲线数土壤有效水分

recent advances on bismuth oxyhalides for photocatalytic CO_(2)reduction

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2024年第6期140卷 183-203页

作者： Liangpang Xu jimmy C.Yu Ying Wang Department of Chemistry The Chinese University of Hong KongShatinNew TerritoriesHong Kong 999077China

Photocatalytic conversion of CO_(2)into fuels such as CO,CH_(4),and CH_(3)OH,is a promising approach for achieving carbon *** oxyhalides(BiOX,where X=Cl,Br,and I)are appropriate photocatalysts for this purpose due to the merits of visible-light-active,efficient charge separation,and easy-to-modify crystal structure and surface *** practical applications,multiple strategies have been proposed to develop high-efficiency BiOX-based *** review summarizes the development of different approaches to prepare BiOX-based photocatalysts for efficient CO_(2)*** the review,the fundamentals of photocatalytic CO_(2)reduction are ***,several widely used modification methods for BiOX photocatalysts are systematacially discussed,including heterojunction construction,introducing oxygen vacancies(OVs),Bi-enrichment,heteroatom-doping,and morphology ***,the challenges and prospects in the design of future BiOX-based photocatalysis for efficient CO_(2)reduction are examined.

关键词： Bismuth oxyhalides Photocatalysis CO_(2)reduction Modification methods

Artificial intelligence analysis of videos to augment clinical assessment:an overview

在线全文

学校读者我要写书评

暂无评论

Neural regeneration research 2024年第4期19卷 717-718页

作者： David C.Wong Stefan williams University of Leeds Leeds Teaching Hospitals Trust LeedsUK

Observation is a fundamental part of the practice of clinical *** of movement is particularly important for the *** such as Parkinson’s disease,multiple sclerosis,stroke,epilepsy,and many others affect a person’s movement in characteristic *** some conditions,changes in the patient’s voice can be included in this-changes in sound caused by changes in the movements of *** clinician’s detection of a characteristic abnormality,and their judgment of its severity,plays a central role in both diagnosis and the assessment of prognosis or response to ***,that practice depends upon a limited resource of experienced *** addition,these experts are limited by human visual judgment,which cannot reliably or precisely detect and measure small or subtle changes in movement(williams et al.,2023).

关键词： clinical epilepsy diagnosis

Glycolysis and glucose metabolism as a target for bioenergetic and neuronal protection in glaucoma

在线全文

学校读者我要写书评

暂无评论

Neural regeneration research 2024年第8期19卷 1637-1638页

作者： Pete A.williams robert J.Casson Department of Clinical Neuroscience Division of Eye and VisionSt.Erik Eye HospitalKarolinska InstitutetStockholmSweden Ophthalmic research Laboratories Discipline of Ophthalmology and Visual SciencesUniversity of AdelaideAdelaideAustralia

Vision is arguably our most valued sense,yet approximately 340 million people globally suffer blindness or moderate visual impairment,highlighting the need to further develop and advance treatments for ophthalmic *** refers to a group of ocular disorders united by a clinically characteristic optic neuropathy with associated retinal ganglion cell loss.

关键词： metabolism glaucoma globally

Why the abnormal phenomena of D-band center theory exist?A new BASED theory for surface catalysis and chemistry

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Catalysis 2024年第9期64卷 44-53页

作者： Zelong Qiao run Jiang jimmy Yun Dapeng Cao State Key Laboratory of Organic‐Inorganic Composites Beijing University of Chemical TechnologyBeijing 100029China Qingdao International Academician Park research Institute Qingdao 266000ShandongChina School of Chemical Engineering The University of New South WalesSydneyNSW 2052Australia

Since the D-band center theory was proposed,it has been widely used in the fields of surface chemistry by almost all researchers,due to its easy understanding,convenient operation and relative ***,with the continuous development of material systems and modification strategies,researchers have gradually found that D-band center theory is usually effective for large metal particle systems,but for small metal particle systems or semiconductors,such as single atom systems,the opposite conclusion to the D-band center theory is often *** solve the issue above,here we propose a bonding and anti-bonding orbitals stable electron intensity difference(BASED)theory for surface *** newly-proposed BASED theory can not only successfully explain the abnormal phenomena of D-band center theory,but also exhibits a higher accuracy for prediction of adsorption energy and bond length of intermediates on active ***,a new phenomenon of the spin transition state in the adsorption process is observed based on the BASED theory,where the active center atom usually yields an unstable high spin transition state to enhance its adsorption capability in the adsorption process of intermediates when their distance is about 2.5Å.In short,the BASED theory can be considered as a general principle to understand catalytic mechanism of intermediates on surfaces.

关键词： Surface chemistry Surface catalysis D-band center theory Bonding orbital Anti-bonding orbital

A Methodology to Measure the Environmental Impact of ICT Operating Systems across Different Device Platforms

在线全文

学校读者我要写书评

暂无评论

Journal of Electronic Science and Technology 2015年第3期13卷 255-263页

作者： Daniel r.williams Yinshan Tang the Technologies for Sustainable Built Environments (TSBE) Centre University of Reading the Henley Business School University of Reading

A new methodology was created to measure the energy consumption and related green house gas （GHG） emissions of a computer operating system （OS） across different device platforms. The methodology involved the direct power measurement of devices under different activity states. In order to include all aspects of an OS, the methodology included measurements in various OS modes, whilst uniquely, also incorporating measurements when running an array of defined software activities, so as to include OS application management features. The methodology was demonstrated on a laptop and phone that could each run multiple OSs, results confirmed that OS can significantly impact the energy consumption of devices. In particular, the new versions of the Microsoft Windows OS were tested and highlighted significant differences between the OS versions on the same hardware. The developed methodology could enable a greater awareness of energy consumption, during both the software development and software marketing processes.

关键词： Environment green information and communications technology operating system sustainability.

Model Predictive Current Control for Low-Cost Shunt Active Power Filter

在线全文

学校读者我要写书评

暂无评论

CSEE Journal of Power and Energy Systems 2024年第4期10卷 1589-1598页

作者： Ali A.Abdel-Aziz Mohamed A.Elgenedy Barry W.williams the Electronic and Electrical Engineering Department Strathclyde UniversityGlasgowG11XQUK School of Computing Engineering and the Built Environment(SCEBE)Glasgow Caledonian UniversityGlasgowG40BAUK

Performance of a three-phase shunt active power filter(SAPF)relies on the capability of the controller to track the reference ***,designing an accurate current controller is crucial to guarantee satisfactory SAPF *** paper presents a model predictive current controller(MPCC)for a low-cost,four-switch,shunt active power filter for power quality improvement.A four-switch,B4,converter topology is adopted as an SAPF,hence offering a simple,robust,and low-cost *** addition,to further reduce overall cost,only two interfacing filter inductors,instead of three,are used to eliminate switching current *** proposed SAPF model MPCC is detailed for implementation,where simulation and experimental results validate effectiveness of the proposed control algorithm showing a 20%improvement in total harmonic distortion compared with a conventional hysteresis band current controller.

关键词： Four-switch converter harmonic distortion model predictive current control power quality shunt active power filter

Fabrication of Electrospun Levodopa-Carbidopa Fixed-Dose Combinations

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advanced Fiber Materials 2020年第4期2卷 194-203页

作者： Haitham Bukhary Gareth r.williams Mine Orlu UCL School of Pharmacy University College London29‑39 Brunswick SquareLondon WC1N 1AXUK Department of Pharmaceutics College of PharmacyUmm Al-Qura UniversityMakkah 24381Saudi Arabia

Introduction Parkinson’s disease(PD)is a disabling disorder that signifi-cantly affects a patient’s quality of life[1].Treatments are available,but only 10%of PD patients fully adhere to their treatment regimens[2].Non-adherence is a serious problem linked to worsening symptoms and increased motor fluc-tuations[3-5].Levodopa(LD)remains the most effective treatment for PD[6].However,a single dosing treatment is only effective in the early phase of the *** the severe phase,4-5 years after diagnosis,the therapeutic window of dopamine becomes narrow,and due to its short half-life of between 0.7 and 1.4 h dosing of LD will be required every 2 h[7-9].One way to ameliorate this issue is to co-admin-ister LD with carbidopa(CD),which can increase LD’s oral bioavailability to 40-70%[10].

关键词： Electrospinning Nanofiber Fixed-dose combination Polypharmacy

Intraoperative radiation therapy deserves to be made more readily available to patients

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Cancer research 2016年第4期28卷 461-462页

作者： Mohammed Keshtgar Norman r.williams The Breast Unit Royal Free HospitalRoyal Free London Foundation Trust

Whole breast external beam radiotherapy is an effective adjuvant treatment for early breast cancer, and was a key factor in the move from mastectomy to breast-conserving surgery for women with low-risk disease. The logical development from partial surgical removal of the breast is partial breast radiotherapy. Several methods of delivery have been investigated, but as yet none has been widely accepted.

关键词： more Intraoperative radiation therapy deserves to be made more readily available to patients IMrT