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一种环氧大豆油基丙烯酸-聚氨酯树脂的制备及性能
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作者 黄英姿 黄潼欣 +4 位作者 周梦璇 叶庆忠 肖亚亮 胡洋 杨卓鸿 《高分子材料科学与工程》 EI CAS CSCD 北大核心 2024年第4期18-28,共11页
新型可再生生物基树脂的开发是实现石油基相关产品的替代及绿色可持续发展的重要手段。文中利用马来酸酐(MA)、甲基四氢苯酐(MTHPA)、丙烯酸羟乙酯(HEA)和环氧大豆油(ESO)为原料,一锅法获得环氧大豆油基丙烯酸树脂(AESO)。在所得树脂中... 新型可再生生物基树脂的开发是实现石油基相关产品的替代及绿色可持续发展的重要手段。文中利用马来酸酐(MA)、甲基四氢苯酐(MTHPA)、丙烯酸羟乙酯(HEA)和环氧大豆油(ESO)为原料,一锅法获得环氧大豆油基丙烯酸树脂(AESO)。在所得树脂中添加一定量的异氰酸酯或HEA半封端的异氰酸酯,得到生物基含量30%以上的环氧大豆油基丙烯酸-聚氨酯树脂。探究了不同异氰酸酯种类及添加量对树脂光固化活性、热稳定性、拉伸性能等的影响。通过动态力学热分析、力学性能及流变黏度等测试分析结果表明,HEA结构的引入可以使聚氨酯光固化膜玻璃化转变温度升至65.3℃,储能模量升至1417.9MPa,拉伸强度最高可达27.4MPa,断裂伸长率可达67.2%,黏度降低至43.4Pa·s。同时发现,上述2种树脂凝胶率达86%以上,均具有碱溶性、优异的耐溶剂性及高光泽度。该方法为环氧大豆油基丙烯酸-聚氨酯树脂的开发提供了新的思路,有助于拓宽其在生物基光固化涂料领域的应用。 展开更多
关键词 大豆油 光固化 一锅法 生物基 丙烯酸-聚氨酯树脂
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Malnutrition predicts poor outcomes in diabetic COVID-19 patients in Huangshi,Hubei
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作者 Jiao Chen Can Zhao +4 位作者 yingzi huang Hao Wang Xiang Lu Wei Zhao Wei Gao 《The Journal of Biomedical Research》 CAS CSCD 2022年第1期42-48,共7页
Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection has spread throughout the world,which becomes a global public health emergency.Undernourishment prolongs its convalescence and has an adverse effect... Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)infection has spread throughout the world,which becomes a global public health emergency.Undernourishment prolongs its convalescence and has an adverse effect on its prognosis,especially in diabetic patients.The purpose of this study was to evaluate the prevalence and characteristics of undernourishment and to determine how it is related to the prognostic outcomes in the diabetic patients with coronavirus disease 2019(COVID-19).A retrospective,multicenter study was conducted in 85 diabetic COVID-19 patients from three hospitals in Hubei Province.All patients were assessed using the European Nutritional Risk Screening 2002(NRS-2002)and other nutritional assessments when admitted.Of them,35(41.18%)were at risk of malnutrition(NRS score≥3).Severe COVID-19 patients had a significantly lower level of serum albumin and prealbumin and higher NRS score than non-severe patients.Multivariate logistic regression analysis showed that serum prealbumin and NRS score increased the likelihood of progression into severe status(P<0.05).Meanwhile,single factor and multivariate analysis determined that grade of illness severity was an independent predictor for malnutrition.Furthermore,prealbumin and NRS score could well predict severe status for COVID-19 patients.The malnutrition group(NRS score≥3)had more severe illness than the normal nutritional(NRS score<3)group(P<0.001),and had a longer length of in-hospital stay and higher mortality.Malnutrition is highly prevalent among COVID-19 patients with diabetes.It is associated with severely ill status and poor prognosis.Evaluation of nutritional status should be strengthened,especially the indicators of NRS-2002 and the level of serum prealbumin. 展开更多
关键词 NRS-2002 MALNUTRITION COVID-19 DIABETES
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Study on the Effect of Canceling Hard Bed on Patients after Renal Needle Biopsy
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作者 Xiaomin Zou yingzi huang +2 位作者 Fanna Liu Yu Chen Yingxue Zhong 《Open Journal of Urology》 2021年第5期177-186,共10页
<strong>Objective: </strong>To investigate the effect of hard bed on postoperative complications and comfort level of patients after renal puncture biopsy. <strong>Methods:</strong> A total of ... <strong>Objective: </strong>To investigate the effect of hard bed on postoperative complications and comfort level of patients after renal puncture biopsy. <strong>Methods:</strong> A total of 115 patients who underwent renal needle biopsy in the Department of Nephrology of The First Affiliated Hospital of Jinan University from May 2020 to February 2021 were selected, and 57 patients who received hard bed nursing after renal needle biopsy were set as the control group, the others were selected as the observation group. The incidence of postoperative bleeding at the puncture mouth, gross hematuria and dysuria, as well as the postoperative comfort level of 6 h and 18 h were compared between the two groups.<strong> Results:</strong> There was no significant difference in the incidence of postoperative bleeding, gross hematuria and dysuria between the two groups (<em>P</em> > 0.05), but the comfort scores at 6 h and 18 h in the observation group were higher than those in the control group (<em>P</em> < 0.05). <strong>Conclusion:</strong> There is no significant difference in the incidence of postoperative complications, such as bleeding at the puncture mouth, gross hematuria and dysuria, among patients with renal needle biopsy, whether to use hard bed nursing or not. Eliminate hard bed nursing can improve the comfort level of patients, reduce the occurrence of pressure ulcers, and relieve the negative psychological emotions of patients. 展开更多
关键词 Hard Bed Renal Puncture Biopsy Postoperative Complications
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Clinical characteristics of patients with COVID-19 in Huangshi, China
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作者 Xiwen Zhang Jianfeng Xie +2 位作者 Xiang Lu Weichao Ha yingzi huang 《Journal of Intensive Medicine》 2022年第3期195-196,共2页
Dear Editor,The first coronavirus disease 2019(COVID-19)outbreak was reported in Wuhan,Hubei,China.As one of the cities closest to Wuhan,Huangshi is considered a subcenter of the Wuhan metropolitan area.This study was... Dear Editor,The first coronavirus disease 2019(COVID-19)outbreak was reported in Wuhan,Hubei,China.As one of the cities closest to Wuhan,Huangshi is considered a subcenter of the Wuhan metropolitan area.This study was carried out to describe the characteristics of adult patients with confirmed COVID-19 in Huangshi. 展开更多
关键词 PATIENTS CLINICAL CHARACTERISTICS
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新型冠状病毒肺炎老年重症患者的救治策略
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作者 钱淑媛 李晓青 +3 位作者 黄英姿 杨毅 潘纯 邱海波 《中华重症医学电子杂志》 CSCD 2022年第3期267-271,共5页
新型冠状病毒肺炎(简称新冠肺炎)老年重症患者因高龄、基础疾病多、器官功能处于代偿边缘等一系列问题,在感染新冠肺炎后,易进展为重型和危重型。本文总结了新冠肺炎老年重症患者救治的经验,通过在原发新冠肺炎控制的基础上,积极治疗基... 新型冠状病毒肺炎(简称新冠肺炎)老年重症患者因高龄、基础疾病多、器官功能处于代偿边缘等一系列问题,在感染新冠肺炎后,易进展为重型和危重型。本文总结了新冠肺炎老年重症患者救治的经验,通过在原发新冠肺炎控制的基础上,积极治疗基础疾病、重视器官功能维护及并发症预防、早期评估患者的病情风险、实施康复及心理护理,为以后该类患者的临床治疗提供依据。 展开更多
关键词 新型冠状病毒肺炎 老年重症患者 呼吸衰竭 救治策略
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巨型方舱医院护理管理实践与体会
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作者 李晓青 夏泽燕 +11 位作者 黄英姿 黄碧红 赵雪红 段培蓓 王蓓 田月香 蔡英华 高燕 贾艳 杨昕 周静 秦毅 《中华重症医学电子杂志》 CSCD 2022年第3期272-275,共4页
本文总结了巨型方舱医院短时间内收治新型冠状病毒肺炎患者的护理管理和实践经验,从方舱医院护理质量提升、物资保障、感染防控和人文护理等方面进行阐述,为未来巨型方舱医院的运行管理提供参考。
关键词 新型冠状病毒肺炎 方舱医院 护理管理
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巨型方舱医院高效安全运维的实践经验——一个目标、双线协同、三个关键、四种模式
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作者 黄英姿 吴文忠 +3 位作者 占伊扬 陆敏 邱泽森 鲁翔 《中华重症医学电子杂志》 CSCD 2022年第3期203-206,共4页
新型冠状病毒肆虐,医疗资源严重挤兑。为切断传染源、阻断传播途径,方舱医院在有效控制疫情方面提供了有力保障。2022年3月上海疫情暴发,兴建超大型方舱医院成为必需。如何实现方舱医院的高效管理、顺利运行及落实患者同质化、规范化诊... 新型冠状病毒肆虐,医疗资源严重挤兑。为切断传染源、阻断传播途径,方舱医院在有效控制疫情方面提供了有力保障。2022年3月上海疫情暴发,兴建超大型方舱医院成为必需。如何实现方舱医院的高效管理、顺利运行及落实患者同质化、规范化诊治是摆在医院管理者面前的一道难题。通过在上海方舱医院的实践经验,本文总结了“一个目标、双线协同、三个关键、四种模式”的方舱医院管理经验,以保证方舱医院医疗质量,实现其同质化、规范化。 展开更多
关键词 方舱医院 医院管理 医疗安全 医护协同
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The challenge of training for family medicine across different contexts:Insights from providing training in China 被引量:14
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作者 John Sandars yingzi huang Trevor Gibbs 《Family Medicine and Community Health》 2016年第2期47-50,共4页
Physicians with expertise in providing training for family medicine,at both undergraduate level and postgraduate level,are frequently invited to run training workshops in countries with developing systems of family me... Physicians with expertise in providing training for family medicine,at both undergraduate level and postgraduate level,are frequently invited to run training workshops in countries with developing systems of family medicine but this approach is often a challenge for the incoming external trainers.There are general challenges in working across different contexts,especially cul-tural factors,the different approaches to training,including the aims,methods,and assessment,and additional organizational factors,influenced by the wider sociopolitical environment of the host country.Practical responses to these challenges are discussed,with relevance to both external trainers and those responsible for requesting training.This commentary contains insights from the experiences of the authors in providing training for family medicine in China. 展开更多
关键词 Undergraduate training postgraduate training family medicine family practice China
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Hepatocyte growth factor protects pulmonary endothelial barrier against oxidative stress and mitochondria-dependent apoptosis 被引量:1
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作者 Shanshan Meng Feiping Xia +7 位作者 Jingyuan Xu Xiwen Zhang Ming Xue Mingyuan Gu Fengmei Guo yingzi huang Haibo Qiu Yi Yang 《Chinese Medical Journal》 SCIE CAS CSCD 2022年第7期837-848,共12页
Background:Pulmonary microvascular endothelial cells(PMVECs)were not complex,and the endothelial barrier was destroyed in the pathogenesis progress of acute lung injury(ALI)/acute respiratory distress syndrome(ARDS).P... Background:Pulmonary microvascular endothelial cells(PMVECs)were not complex,and the endothelial barrier was destroyed in the pathogenesis progress of acute lung injury(ALI)/acute respiratory distress syndrome(ARDS).Previous studies have demonstrated that hepatocyte growth factor(HGF),which was secreted by bone marrow mesenchymal stem cells,could decrease endothelial apoptosis.We investigated whether mTOR/STAT3 signaling acted in HGF protective effects against oxidative stress and mitochondria-dependent apoptosis in lipopolysaccharide(LPS)-induced endothelial barrier dysfunction and ALI mice.Methods:In our current study,we introduced LPS-induced PMEVCs with HGF treatment.To investigate the effects of mammalian target of rapamycin(mTOR)/signal transducer and activator of transcription 3(STAT3)pathway in endothelial oxidative stress and mitochondria-dependent apoptosis,mTOR inhibitor rapamycin and STAT3 inhibitor S3I-201 were,respectively,used to inhibit mTOR/STAT3 signaling.Moreover,lentivirus vector-mediatedmTORC1(Raptor)andmTORC2(Rictor)gene knockdown modifications were introduced to evaluatemTORC1 andmTORC1 pathways.Calcium measurement,reactive oxygen species(ROS)production,mitochondrial membrane potential and protein,cell proliferation,apoptosis,and endothelial junction protein were detected to evaluate HGF effects.Moreover,we used the ALI mouse model to observe the mitochondria pathological changes with an electron microscopein vivo.Results:Our study demonstrated that HGF protected the endothelium via the suppression of ROS production and intracellular calcium uptake,which lead to increased mitochondrial membrane potential(JC-1 and mitochondria tracker green detection)and specific proteins(complex I),raised anti-apoptosis Messenger Ribonucleic Acid level(B-cell lymphoma 2 and Bcl-xL),and increased endothelial junction proteins(VE-cadherin and occludin).Reversely,mTOR inhibitor rapamycin and STAT3 inhibitor S3I-201 could raise oxidative stress and mitochondria-dependent apoptosis even with HGF treatment in LPS-induced endothelial cells.Similarly,mTORC1 as well as mTORC2 have the same protective effects in mitochondria damage and apoptosis.Inin vivo experiments of ALI mouse,HGF also increased mitochondria structural integrity via the mTOR/STAT3 pathway.Conclusion:In all,these reveal that mTOR/STAT3 signaling mediates the HGF suppression effects to oxidative level,mitochondria-dependent apoptosis,and endothelial junction protein in ARDS,contributing to the pulmonary endothelial survival and barrier integrity. 展开更多
关键词 Hepatocyte growth factor Acute respiratory distress syndrome Endothelial barrier mTOR/STAT3 pathway PERMEABILITY
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Clinical significance of serum IgM and IgG levels in COVID-19 patients in Hubei Province,China
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作者 Zhenjiang Bai Qing Li +20 位作者 Qinghui Chen Changming Niu Yu Wei Hanpeng huang Wei Zhao Nian Chen Xin Yao Qiang Zhang Chuanyong Mu Jian Feng Chuanlong Zhu Zhuo Li Ming Ding Binhui Feng Chaochao Jin Xiang Lu Yi Yang Shuiyan Wu Xiaochen Shu Haibo Qiu yingzi huang 《Journal of Intensive Medicine》 2022年第1期32-38,共7页
Background:There have been many studies about coronavirus disease 2019(COVID-19),but the clinical signifi-cance of quantitative serum severe acute respiratory syndrome-coronavirus-2(SARS-CoV-2)-specific IgM and IgG le... Background:There have been many studies about coronavirus disease 2019(COVID-19),but the clinical signifi-cance of quantitative serum severe acute respiratory syndrome-coronavirus-2(SARS-CoV-2)-specific IgM and IgG levels of COVID-19 patients have not been exhaustively analyzed.We aimed to investigate the time profiles of these IgM/IgG levels in COVID-19 patients and their correlations with clinical features.Methods:A multicenter clinical study was conducted from February 20 to March 52020.It involved 179 COVID-19 patients(108 males and 71 females)from five hospitals in Huangshi in Hubei Province,China.To detect SARS-CoV-2-specific IgM/IgG,quantitative antibody assays(two-step indirect immunoassays with direct chemilu-minescence technology)based on the nucleocapsid protein(NP)and spike protein 1(S1)were used.For normally distributed data,means were compared using the t-test,𝜒2-test,or exact probability method.For categorical data,medians were compared using Mann-Whitney U test.Results:The median age was 57(44-69)years(58[38-69]for males and 57[49-68]for females).The median duration of positive nucleic acid test was 22.32(17.34-27.43)days.The mortality rate was relatively low(3/179,1.68%).Serum SARS-CoV-2-specific IgG was detected around week 1 after illness onset,gradually increased until peaking in weeks 4 and 5,and then declined.Serum IgM peaked in weeks 2 and 3,then gradually declined and returned to its normal range by week 7 in all patients.Notably,children had milder respiratory symptoms with lower SARS-CoV-2-specific IgM/IgG levels.The duration of positive nucleic acid test in the chronic obstructive pulmonary disease(COPD)group was 30.36(18.99-34.76)days,which was significantly longer than that in the non-COPD group(21.52[16.75-26.51]days;P=0.025).The peak serum SARS-CoV-2-specific IgG was sig-nificantly positively correlated with the duration of positive nucleic acid test.The incidence rate of severe and critical cases in the IgM hi group(using the median IgM level of 29.95 AU/mL as the cutofffor grouping)was about 38.0%(19/50),which was twice as much as that in the IgM lo group(18.4%;9/49).The patients with positive chest imaging and lymphocytopenia(<1×10^(9)/L)had a higher SARS-CoV-2-specific IgM level.Conclusions: Quantitative SARS-CoV-2-specific IgM and IgG levels are helpful for the diagnosis, severity classifi- cation, and management of COVID-19 patients, and they should be monitored in each stage of this disease. 展开更多
关键词 COVID-19 Severe acute respiratory syndrome-coronavirus-2(SARS-CoV-2) Serum IgM Serum IgG Clinical significance
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