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Acta Metallurgica Sinica(English Letters) 2017年第1期30卷 45-52页

作者： Edreese Alsharaeh Sarah Alazzam Faheem Ahmed Nishat Arshi Mohammed Al-Hindawi garwin kim sing College of Science & General Studies Alfaisal UniversityRiyadhSaudi Arabia

In this paper, silver nanoparticles （AgNPs） and AgNPs/reduced graphene oxide （RGO） nanocomposites were prepared using lemon juice under microwave irradiation （MWI） and UV light irradiation. AgNPs with face-centered cubic structure RGO peaks were observed by X-ray diffraction. The UV-Vis spectrum showed modifications in the absorption peaks of the AgNPs with the concentration of the precursor solution and irradiation time, and the optimized condition was obtained for 20 min MWI and 60 s of UV light. Raman analysis confirmed the presence of RGO as D and G bands in the spectrum. Transmission electron microscopy analyses confirmed that the AgNPs of size ranging from 3 to 8 nm were anchored onto the RGO sheets. The antibacterial properties of the AgNPs/RGO nanocomposites were investigated using gram-negative bacteria. The results revealed that AgNPs/RGO nanocomposites consisting of approximately 5 wt% AgNPs can achieve antibacterial performance similar to that of neat AgNPS. This method can be useful for the applications of AgNPs-based nanocomposites, where minute amount of silver will be utilized.

关键词： Silver nanoparticles (AgNPs) Nanocomposites Reduced graphene oxide Antibacterial

Colonoscopy in Hong Kong Chinese children

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World Journal of Gastroenterology 2010年第9期16卷 1119-1122页

作者： Yuk Him Tam kim Hung Lee Kin Wai Chan Jennifer Dart Yin Sihoe sing Tak Cheung Jennifer Wai Cheung Mou Division of Paediatric Surgery & Paediatric Urology Department of SurgeryPrince of Wales HospitalThe Chinese University of Hong Kong

AIM:To investigate the safety and diagnostic yield of colonoscopy in Chinese children in whom the procedure is not often ***:We conducted a retrospective review of all colonoscopies in consecutive children who underwent their fi rst diagnostic colonoscopy from Jan 2003 to ***:Seventy-nine children (48 boys,31 girls;mean age 9.2 ± 4.2 years) were identified and reviewed with a total of 82 colonoscopies *** caecal and ileal intubation rates were 97.6% and 75.6% *** patients (50.6%) had a positive diagnosis made in colonoscopy and that included colonic polyps (23),Crohn's disease (12),ulcerative colitis (1),and miscellaneous causes (4).80% of polyps were in the rectosigmoid *** but one were juvenile hamartomatous *** exceptionwas an adenomatous *** mean ages for children with inflammatory bowel disease (IBD) and polyps were 11.3 and 4.3 years *** was no procedure-related ***:Colonoscopy is a safe procedure in our Chinese *** increasing diagnosis of IBD in recent decades may reflect a rising incidence of the disease in our children.

关键词： Colonoscopy Children Inflammatory bowel disease Colonic polyps

Oral Administration Following Subcutaneous Administration of FCV Vaccines Enhances Vaccine Efficacy against Challenge of a Highly Virulent Vs Feline Calicivirus

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World Journal of Vaccines 2014年第2期4卷 81-87页

作者： sing Rong kim Floyd-Hawkins Vicki King Global Biologics Research Zoetis-Vet Med R&D Kalamazoo USA Global Development&Operation Zoetis-Vet Med R&D Kalamazoo USA

Feline calicivirus (FCV) is a common cause of upper respiratory and oral disease in cats. Highly virulent systemic strains of FCV (vs FCV) have been described. These vs FCV isolates cause characteristic edema, cutaneous ulcers and other clinical signs typically associated with FCV infection. Vs FCV isolates also cause high mortality even in previously vaccinated cats. We reported previously that the FCV serum cross-neutralization profile of cat serum generated using the oralnasal route of administration is broader than with subcutaneous administration (SC), as measured with a 26-FCV viral panel (Rong et al., Virus Research 122:95-108, 2006). In this report, we tested the in vivo ef- ficacy of the FCV vaccine, in a 4-way (FCV-FHV-FPV-FCp) format, by using a highly virulent vs FCV- 33585 as the challenge virus. Vaccines were administered as 2-dose subcutaneouly (SC/SC), or subcutaneously followed by orally (SC/Oral). The mortality induced by vs FCV-33585 in unvaccinated control cats was 78% (7 out of 9 cats). The mortality decreased to 44% (4 out of 9 cats) with cats vaccinated with the 4-way vaccine given SC/SC. However, when this vaccine was given SC/Oral, the mortality decreased to 10% (1 out of 10 cats). The clinical scores, calculated based on frequency and severity of various clinical signs, correlated with mortality data. These results demonstrated that oral administration of FCV vaccines, as the second dose following the first dose of subcutaneious administration, ehances FCV efficacy against challenge of a highly virulent vs FCV. We propose that not only oral vaccination offers convenience and needle-free inoculation, it also enhances FCV vaccine efficacy.

关键词： Positive-Strand RNA FCV VS FCV Calicivirus Subcutaneous Administration Oral/Oronasal Administration Serum-Virus Neutralization Vaccine Efficacy

Ionic liquid multistate resistive switching characteristics in two terminal soft and flexible discrete channels for neuromorphic computing

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Microsystems & Nanoengineering 2022年第3期8卷 153-161页

作者： Muhammad Umair Khan Jungmin kim Mahesh Y.Chougale Chaudhry Muhammad Furqan Qazi Muhammad Saqib Rayyan Ali Shaukat Nobuhiko P.Kobayashi Baker Mohammad Jinho Bae Hoi-sing Kwok Department of Ocean System Engineering Jeju National University102 JejudaehakroJeju 63243Republic of Korea Department of Electrical Engineering and Computer Science Khalifa UniversityAbu Dhabi 127788UAE System on Chip Center Khalifa UniversityAbu Dhabi 127788UAE Department of Electronics and Computer Engineering The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina State Key Laboratory on Advanced Displays and Optoelectronics Technologies The Hong Kong University of Science and TechnologyClear Water BayKowloonHong KongChina Baskin School of Engineering Univerity of California Santa Cruz1156 High StreetSanta CruzCA 95064USA

By exploiting ion transport phenomena in a soft and flexible discrete channel,liquid material conductance can be controlled by using an electrical input signal,which results in analog neuromorphic *** paper proposes an ionic liquid(IL)multistate resistive switching device capable of mimicking synapse analog behavior by using IL BMIM FeCL_(4) and H_(2)O into the two ends of a discrete polydimethylsiloxane(PDMs)*** spike rate-dependent plasticity(SRDP)and spike-timing-dependent plasticity(STDP)behavior are highly stable by modulating the input ***,the discrete channel device presents highly durable performance under mechanical bending and *** the obtained parameters from the proposed ionic liquid-based synaptic device,convolutional neural network simulation runs to an image recognition task,reaching an accuracy of 84%.The bending test of a device opens a new gateway for the future of soft and flexible brain-inspired neuromorphic computing systems for various shaped artificial intelligence applications.

关键词： computing gateway state

轻型缺血性卒中或短暂性脑缺血发作的早期双联抗血小板治疗

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英国医学杂志中文版 2019年第5期22卷 262-265页

作者：王拥军 S. Claiborne Johnston Philip M Bath James C. Grotta 潘岳松 Pierre Amarenco 王伊龙 Tabassome Simon Jong Sung kim Jiann-Shing Jeng 刘丽萍林毅 Ka sing Lawrence Wong David Wang 李昊首都医科大学附属北京天坛医院神经内科 l0Department of Clinical Pharmacology Sorbonne UniversityParisFrance FACT (French Alliance for Cardiovascular clinical Trials) ParisFrance Department of Neurology University of UlsanAsan Medical CenterSeoulSouth Korea Department of Neurology and Stroke Center National Taiwan University HospitalTaipeiTaiwan 福建医科大学第一附属医院神经内科 Division of Neurology Department of Medicine and Therapeuticsthe Chinese University of Hong KongPrince of Wales HospitalHong KongChina Illinois Neurological Institute Stroke Network OSF Healthcare SystemPeoriaUSA Department of Neurology University of Illinois College of Medicine at PeoriaPeoriaUSA 国家神经系统疾病临床医学研究中心北京脑重大疾病研究院卒中研究中心北京市脑血管病转化医学重点实验室 Dean's Office Dell Medical SchoolUniversity of Texas at AustinAustinUSA Stroke Trials Unit Division of Clinical NeuroscienceUniversity of NottinghamNottinghamUK Clinical Innovation and Research Institute Memorial Hermann HospitalHoustonUSA Department of Neurology and Stroke Center Bichat University Hospital and Paris-DiderotSorbonne UniversityParisFrance Department of Clinical Pharmacology and Clinical Research Platform of East of Paris (URCEST - CRC - CRB) Assistance Publique-Hopitaux de ParisParisFrance

王拥军及同事探讨了应用双联抗血小板治疗预防卒中复发或短暂性脑缺血发作的最新证据。轻型缺血性卒中和短暂性脑缺血发作(TIA)患者在头几周内有较高的卒中及其他血管事件的复发风险(5%~11.7%严。双联抗血小板治疗,包括氯吡格雷和阿司匹... 详细信息

王拥军及同事探讨了应用双联抗血小板治疗预防卒中复发或短暂性脑缺血发作的最新证据。轻型缺血性卒中和短暂性脑缺血发作(TIA)患者在头几周内有较高的卒中及其他血管事件的复发风险(5%~11.7%严。双联抗血小板治疗,包括氯吡格雷和阿司匹林,是减少卒中复发的有效治疗策略Magic Group的专家小组(http://***/)最近在The BMJ中发表了一个强烈的快速推荐建议,即对于轻型缺血性卒中和TIA患者应在症状出现24小时内开始双联抗血小板治疗,并持续10~21天3。

关键词：短暂性脑缺血发作抗血小板治疗缺血性卒中轻型早期复发风险阿司匹林有效治疗

轻量化杜仲胶/高密度聚乙烯形状记忆材料的制备与性能

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合成橡胶工业 2019年第4期42卷 300-305页

作者：王彦夏琳辛振祥金振国青岛科技大学橡塑材料与工程教育部重点实验室

以可膨胀物理微球Expancel 920 DU 40为发泡剂,通过物理共混和化学交联的方式制备了发泡杜仲胶(EUG)/高密度聚乙烯(HDPE)形状记忆材料,从而实现了轻量化。采用扫描电镜、差示扫描量热法和万能材料试验机等对不同共混比的发泡EUG/HDPE复... 详细信息

以可膨胀物理微球Expancel 920 DU 40为发泡剂,通过物理共混和化学交联的方式制备了发泡杜仲胶(EUG)/高密度聚乙烯(HDPE)形状记忆材料,从而实现了轻量化。采用扫描电镜、差示扫描量热法和万能材料试验机等对不同共混比的发泡EUG/HDPE复合材料的微观形貌、结晶熔融行为、物理机械性能和形状记忆行为等进行了研究。结果表明,随着HDPE用量的增加,发泡EUG/HDPE形状记忆材料的交联程度和拉伸强度降低,定伸应力增大,物理机械性能与材料内部的交联结构、晶区、泡孔等微观结构密切相关;HDPE的加入使复合材料的发泡程度增大,EUG相的熔融温度和相对结晶度随HDPE用量的增加而降低,HDPE的相对结晶度增大而熔融温度基本无变化;随HDPE用量的增加,复合材料的热刺激响应温度升高,形变回复速率减小,热致形变回复率无明显变化。

关键词：杜仲胶高密度聚乙烯形状记忆复合材料共混比形变回复率热刺激响应温度形变回复速率