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Visualization of atomic scale reaction dynamics of supported nanocatalysts during oxidation and ammonia synthesis using in-situ environmental(scanning) transmission electron microscopy

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Journal of Energy Chemistry 2021年第6期30卷 281-290,I0007页

作者： Michael r.ward robert W.Mitchell Edward D.Boyes Pratibha L.Gai The York Nanocentre University of YorkYork YO105DDUK Department of Physics University of YorkYork YO105DDUK Department of Electronic Engineering University of YorkYork YO105DDUK Department of Chemistry University of YorkYork YO105DDUK

reaction dynamics in gases at operating temperatures at the atomic level are the basis of heterogeneous gas-solid catalyst reactions and are crucial to the catalyst *** noble metal nanocatalysts such as platinum are of interest in fuel cells and as diesel oxidation catalysts for pollution control,and practical ruthenium nanocatalysts are explored for ammonia *** and graphitic carbons are of interest as supports for the *** considerable literature on the catalytic processes on graphite and graphitic supports,reaction dynamics of the nanocatalysts on the supports in different reactive gas environments and operating temperatures at the single atom level are not well *** we present real time in-situ observations and analyses of reaction dynamics of Pt in oxidation,and practical ru nanocatalysts in ammonia synthesis,on graphite and related supports under controlled reaction environments using a novel in-situ environmental(scanning) transmission electron microscope with single atom *** recording snapshots of the reaction dynamics,the behaviour of the catalysts is *** images reveal single metal atoms,clusters of a few atoms on the graphitic supports and the support *** all play key roles in the mobility,sintering and growth of the *** experimental findings provide new structural insights into atomic scale reaction dynamics,morphology and stability of the nanocatalysts.

关键词： In-situ visualization Atomic scale reaction dynamics In-situ environmental scanning transmission electron microscopy with single atom resolution Supported nanoparticles Ammonia synthesis Oxidation reactions

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自动测试系统应用面向对象方法的现实

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微电子测试 1994年第4期8卷 45-46页

作者： James r.ward 张秀兰

有许多ATE供货商宣称他们的面向对象的软件系统提供比较高的生产能力。在一定程度上他们的声明是真实的。但是,实际的生产能力优势不仅是来自面向对象。面向对象编程技术仅仅是寻求提高生产能力的一个部分。本文论述面向对象研究的重要... 详细信息

有许多ATE供货商宣称他们的面向对象的软件系统提供比较高的生产能力。在一定程度上他们的声明是真实的。但是,实际的生产能力优势不仅是来自面向对象。面向对象编程技术仅仅是寻求提高生产能力的一个部分。本文论述面向对象研究的重要性及其好处,但也强调建立下一代系统所必需的其它主要特性。

关键词：自动测试系统面向对象测试系统

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影响海产品微生物指标的因素

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国外水产 1991年第2期 22-25页

作者： Donn r.ward 王建中周晓莉

在诸多影响海产品微生物指标的因素中,有的与微生物的关系简单,有的则很复杂,有的是海产品本身固有的,有的则是由处理和加工过程带来的.这些因素究竞如何影响海产品的微生物指标,很难全部弄清楚.本文综述了影响海产品微生物指标的诸因素.

关键词：海产品微生物指标

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MrI技术对肝铁过载病人临床决策的影响：FerriScan和r2*衍生肝铁浓度的比较

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国际医学放射学杂志 2020年第3期 374-375页

作者： M.S.Sussman r.ward K.H.M.Kuo G.Tomlinson K.S.Jhaveri 肖依然 Department of Medical Imaging University Health Net-work Mount Sinai Hospital and Women’s College Hospital University of Toronto

摘要目的旨在比较采用FerriScan和r2*方法对铁过载病人临床决策的影响。方法采用1.5 T西门子MAGNETOM Avanto Fit设备对106例病人进行连续2个时间点

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用电渣重熔锭制造9Cr-1Mo钢原子能管板锻件的生产

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大型铸锻件 1986年第2期 78-84页

作者： M.Kohno T.Abe H.Kikuchi K.Sekimoto T.Miyawaki C.Bolton r.ward 菁华日本

本文叙述了用于快中子增殖反应堆的大型截面9Gr-1Mo钢管板锻件的生产和质量。把电渣重熔法应用于炼钢,除改善了化学和冶金均匀性之外,还消除了大的非金属夹杂。为得到良好的机械性能和细晶粒度,就选择化学成分和热处理状态的最佳条件进... 详细信息

本文叙述了用于快中子增殖反应堆的大型截面9Gr-1Mo钢管板锻件的生产和质量。把电渣重熔法应用于炼钢,除改善了化学和冶金均匀性之外,还消除了大的非金属夹杂。为得到良好的机械性能和细晶粒度,就选择化学成分和热处理状态的最佳条件进行初步的调查研究。根据初步调查研究结果制成的管板锻件,质量极好,超过了全部规范要求。

关键词： 9Cr-1Mo钢电渣重熔锭管板生产原子能快中子增殖反应堆镀件制造

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A framework for dynamic modelling of railway track switches considering the switch blades,actuators and control systems

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railway Engineering Science 2024年第2期32卷 162-176页

作者： Saikat Dutta Tim Harrison Christopher.ward roger Dixon Phil Winship Institute of Thermofluids School of Mechanical EngineeringUniversity of LeedsLeedsWest YorkshireUK Wolfson School of Mechanical Electrical and Manufacturing EngineeringLoughborough UniversityLoughboroughLeicestershireUK Birmingham Centre for railway research and Education School of EngineeringUniversity of BirminghamBirminghamWest MidlandsUK Network rail Milton KeynesBuckinghamshireUK

The main contribution of this paper is the development and demonstration of a novel methodology that can be followed to develop a simulation twin of a railway track switch system to test the functionality in a digital *** is important because,globally,railway track switches are used to allow trains to change routes;they are a key part of all railway ***,because track switches are single points of failure and safety-critical,their inability to operate correctly can cause significant delays and concomitant *** order to better understand the dynamic behaviour of switches during operation,this paper has developed a full simulation twin of a complete track switch *** approach fuses finite element for the rail bending and motion,with physics-based models of the electromechanical actuator system and the control ***,it provides researchers and engineers the opportunity to explore and understand the design space around the dynamic operation of new switches and switch machines before they are *** is useful for looking at the modification or monitoring of existing switches,and it becomes even more important when new switch concepts are being considered and *** simulation is capable of running in real time or faster meaning designs can be iterated and checked *** paper describes the modelling approach,demonstrates the methodology by developing the system model for a novel“rEPOINT”switch system,and evaluates the system level performance against the dynamic performance requirements for the *** the context of that case study,it is found that the proposed new actuation system as designed can meet(and exceed)the system performance requirements,and that the fault tolerance built into the actuation ensures continued operation after a single actuator failure.

关键词： railway track switch Mathematical modelling redundant actuation Finite element analysis

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铁过载病人的葡萄糖失调节是否与通过MrI定量测得的胰腺和肝的铁和脂肪含量有关系？

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国际医学放射学杂志 2020年第3期 369-369页

作者： J.Shur S.A.r.Kannengiesser r.Menezes r.ward K.Kuo K.Jhaveri 肖依然 Department of Medical Imaging University Health Net-work Mount Sinai Hospital and Women’s College Hospital University of Toronto

摘要目的探讨铁过载病人胰腺和肝的铁和脂肪含量与葡萄糖代谢的关系,并解决文献中关于胰腺铁与葡萄糖失调节之间相互矛盾的结果。方法本研究回顾性分析了通过

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A flexible,thin-film microchannel electrode array device for selective subdiaphragmatic vagus nerve recording

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Microsystems & Nanoengineering 2024年第1期10卷 115-128页

作者： Jongcheon Lim Peter A.Zoss Terry L.Powley Hyowon Lee Matthew P.ward Weldon School of Biomedical Engineering Purdue UniversityWest LafayetteINUSA Birck Nanotechnology Center Purdue UniversityWest LafayetteINUSA Center for Implantable Devices Purdue UniversityWest LafayetteINUSA Department of Psychological Sciences Purdue UniversityWest LafayetteINUSA Purdue Institute of Integrative Neuroscience Purdue UniversityWest LafayetteINUSA Indiana University School of Medicine IndianapolisINUSA

The vagus nerve(VN)plays an important role in regulating physiological conditions in the gastrointestinal(GI)tract by communicating via the parasympathetic pathway to the enteric nervous system(ENS).However,the lack of knowledge in the neurophysiology of the VN and GI tract limits the development of advanced treatments for autonomic dysfunctions related to the *** better understand the complicated underlying mechanisms of the VN-GI tract neurophysiology,it is necessary to use an advanced device enabled by microfabrication *** several candidates including intraneural probe array and extraneural cuff electrodes,microchannel electrode array devices can be used to interface with smaller numbers of nerve fibers by securing them in the separate channel *** microchannel electrode array devices to interface teased nerve structures are relatively bulky with thickness around 200µ*** thick design can potentially harm the delicate tissue structures,including the nerve *** this paper,we present a flexible thin film based microchannel electrode array device(thickness:11.5µm)that can interface with one of the subdiaphragmatic nerve branches of the VN in a *** demonstrated recording evoked compound action potentials(ECAP)from a transected nerve ending that has multiple nerve ***,our analysis confirmed that the signals are from C-fibers that are critical in regulating autonomic neurophysiology in the GI tract.

关键词： electrode recording film

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螯合治疗铁过载病人肝铁定量的在线r2*MrI与Ferri Scan的比较：初步结果

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国际医学放射学杂志 2022年第1期 123-123页

作者： G.M.Healy S.A.r.Kannengiesser O.Espin-Garcia r.ward K.H.M.Kuo K.S.Jhaveri 向往

摘要目的使用r2或r2*计算肝脏铁浓度（LIC）的MrI定量时需要离线后处理，导致报告延迟、管理开销和成本增加。原型3D多梯度回波脉冲序列具有线上的后处理功

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Prader-Willi Syndrome and the Use of Medical Nutrition Therapy

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Case reports in Clinical Medicine 2024年第8期13卷 339-344页

作者： Alexis Howarth Cameron Carroll Madison Battersby Stephen Brown JuliSu DiMucci-ward Department of Nutrition Edward Via College of Osteopathic Medicine Spartanburg South Carolina USA

Title: Integrating Consistent Individualized Carbohydrate-Controlled Anti- Inflammatory Nutritional Plan (C-ICAN) in the Management of Prader-Willi Syndrome: A Case report. Prader–Willi syndrome (PWS) is a rare genetic disorder caused by a loss of function of specific genes on chromosome 15. Patients with this disease present unique challenges in management, particularly regarding obesity and nutritional regulation as the disease symptoms change depending on the age of the patient and the phase of the disease. These challenges pose critical stressors to caregivers and their families. We present a case report of a 5-year-old Caucasian male diagnosed with PWS, exhibiting failure to thrive and uncontrolled weight gain. His caregiver was his elderly grandmother who, by her own admission, was ill-equipped to deal with the patient’s physical symptoms and his behavior in response to dietary restrictions. Through a multidisciplinary approach involving medical nutrition therapy (MNT) involving the implementation of a Consistent Individualized Carbohydrate-Controlled Anti-Inflammatory Nutritional plan (C-ICAN), growth hormone supplementation, and behavioral interventions patient markedly improved physically and emotionally.

关键词： Prader-Willi Syndrome Growth Hormone Medical Nutrition Therapy Eating Control Obesity

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