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The Effect of Supplemental Blue, Red and Far-Red Light on the Growth and the Nutritional Quality of Red and Green Leaf Lettuce

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American Journal of Plant Sciences 2019年第12期10卷 2219-2235页

作者： Myungjin Lee jingwen xu Weiqun Wang C. B. Rajashekar Department of Horticulture and Natural Resources Kansas State University Manhattan KS USA Department of Food Nutrition Dietetics and Health Kansas State University Manhattan KS USA

Spectral quality of radiation has a major impact on the growth, development and nutritional quality of crops. The effect of supplemental radiation (blue, red and far-red) on the growth and nutritional quality with regard to health-promoting phytochemical and micronutrient composition of two lettuce (Lactuca sativa) varieties (red leaf “New Red Fire” and green leaf “Two Star”) was studied. Supplemental radiation was provided by blue (450 nm), red (660 nm) or far-red (730 nm) LEDs against a background of white light (fluorescent lighting, PAR;270 μmol/m2/s) in a growth chamber study. All the supplemental radiation treatments increased dry shoot biomass in both varieties. However, supplemental far-red radiation increased both fresh and dry shoot biomass in both varieties. In addition, supplemental far-red radiation produced distinct morphological characteristics in lettuce plants. It produced the largest shoot biomass, bigger and taller plants, fewer leaves but with larger leaf area compared to the control, similar to the shade avoidance response. With regard to the accumulation of phytochemicals, supplemental blue radiation enhanced the total phenolic compound concentration in both varieties. In addition, supplemental blue radiation sharply increased the accumulation of several phenolic compounds in green leaf lettuce including chlorogenic acid, chicoric acid, rutin, kaempferol, luteolin and apigenin. For example, the leaf concentration of rutin in green leaf lettuce increased by 20-fold under supplemental blue radiation. Similarly, supplemental red radiation increased the concentration of many of these phenolic compounds in red leaf lettuce. However, supplemental far-red radiation had an inhibitory effect on the accumulation of chlorogenic acid, chicoric acid, rutin and kaempferol in red leaf lettuce. While supplemental radiation did not affect the accumulation of most of the micronutrients, it had a negative impact on the accumulation of some micronutrients, the response being variety dependent. The results show

关键词： LEDs Lettuce Micronutrients Nutritional Quality Phytochemicals Spectral Quality

Platinum single atom catalysts for hydrogen isotope separation during hydrogen evolution reaction

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Nano Research 2022年第5期15卷 3952-3958页

作者： Jingsong xu Rui Li Xiayan Yan Qingkai Zhao Rongguang Zeng jingwen Ba Qifa Pan Xin Xiang Daqiao Meng Science and Technology on Surface Physics and Chemistry Laboratory Jiangyou 621908China Institute of Materials China Academy of Engineering PhysicsJiangyou 621907China

Electrolysis of water is widely used for hydrogen isotope separation and the development of hydrogen evolution reaction(HER)catalysts with high selectivity and activity is of key importance.Herein,we propose single atom catalysts(SACs)as promising catalysts for efficient hydrogen isotope separation.Pt SACs and Pt nanoparticles(NPs)have been fabricated on nanoarray-structured nitrogen-doped graphite foil(NGF)substrate by a polyol reduction method.The as prepared Pt1/NGF electrode exhibits high activity and selectivity toward HER with a low overpotential of 0.022 V at 10 mA·cm^(-2) and a high separation factor of 6.83 for hydrogen and deuterium separation,much better than Pt NPs counterpart.Density functional theory(DFT)calculations ascribe the high activity and selectivity to the constructed Pt-N_(2)C_(2) structure.This work develops a new opportunity for the design and application of high-efficiency and stable SACs toward hydrogen isotope separation by electrolysis of water.

关键词： hydrogen isotope separation,single atom catalysts hydrogen evolution reaction polyol reduction separation factor

Au/Ag_(2)S dimeric nanostructures for highly specific plasmonic sensing of mercury(Ⅱ)

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Chinese Chemical Letters 2023年第3期34卷 142-147页

作者： Xinyi Liang xu Du Ao Liu Zhixiong Cai jingwen Li Maosheng Zhang Qingxiang Wang Jingbin Zeng College of Chemistry and Chemical Engineering and State Key Laboratory of Heavy Oil Processing China University of Petroleum(East China)Qingdao 266580China College of Chemistry and Environment Fujian Provincial Key Laboratory of Modern Analytical Science and Separation TechnologyMinnan Normal UniversityZhangzhou 363000China

Although many plasmonic nanosenosrs have been established for the detection of mercury(Ⅱ)(Hg^(2+)),few of them is feasible for analyzing natural samples with very complex matrices because of insufficient method selectivity.To address this challenge,we propose an epitaxial and lattice-mismatch approach to the synthesis of a unique Au/Ag_(2)S dimeric nanostructure,which consists of an Au segment with excellent plasmonic characteristics,and a highly stable Ag_(2)S portion with minimum solubility product (K_(sp)(Ag_(2)S)=6.3×10^(-50)).The detection relies on the chemical conversion of Ag_(2)S to HgS when reacting with Hg^(2+),resulting in a red shift in the absorption band of the connecting Au NPs.The concurrent color changes of the solution from gray purple to dark green and finally to navy correlate well with Hg^(2+)concentration,thus enables UV-vis quantitation and a naked-eye readout of the Hg^(2+)concentration.This method exhibits superior selectivity towards Hg^(2+) over other interfering ions tested because Hg^(2+) is the only ion that can react with Ag_(2)S to form HgS with even smaller solubility product (K_(sp)(HgS)=4×10^(-53)).The detection limit of this method is 1.21μmol/L,calculated by the signal-to-noise of 3.The practicability of the method was verified by analyzing the Hg^(2+)in sewage water samples without sample pretreatment with satisfactory recoveries (93.1%-102.8%) and relative standard deviations (1.38%-2.89%).We believe this method holds great potential for on-the-spot detection of Hg^(2+) in environmental water samples with complex matrices.

关键词： Au/Ag_(2)S dimeric nanoparticles Mercury ion Colorimetric detection High selectivity

Control measures during the COVID-19 outbreak reduced the transmission of hand,foot,and mouth disease

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Journal of Safety Science and Resilience 2021年第2期2卷 63-68页

作者： Yan Niu Li Luo Jia Rui Shiting Yang Bin Deng Zeyu Zhao Shengnan Lin jingwen xu Yuanzhao Zhu Yao Wang Meng Yang Xingchun Liu Tianlong Yang Weikang Liu Peihua Li Zhuoyang Li Chan Liu Jiefeng Huang Tianmu Chen Chinese Center for Disease Control and Prevention Beijing102206China State Key Laboratory of Molecular Vaccinology and Molecular Diagnostics School of Public HealthXiamen UniversityXiamenFujian361102China

Control measures during the coronavirus disease 2019(COVID-19)outbreak may have limited the spread of infectious diseases.This study aimed to analyze the impact of COVID-19 on the spread of hand,foot,and mouth disease(HFMD)in China.A mathematical model was established to fit the reported data of HFMD in six selected cities in China's Mainland from 2015 to 2020.The absolute difference(AD)and relative difference(RD)between the reported incidence in 2020,and simulated maximum,minimum,or median incidence of HFMD in 2015-2019 were calculated.The incidence and R effof HFMD have decreased in six selected cities since the outbreak of COVID-19,and in the second half of 2020,the incidence and R effof HFMD have rebounded.The results show that the total attack rate(TAR)in 2020 was lower than the maximum,minimum,and median TAR fitted in previous years in six selected cities(except Changsha City).For the maximum,median,minimum fitted TAR,the range of RD(%)is 42·20-99·20%,36·35-98·41%48·35-96·23%(except Changsha City)respectively.The preventive and control measures of COVID-19 have significantly contributed to the containment of HFMD transmission.

关键词： HFMD Transmissibility COVID-19 Effective reproduction number Mathematical model

标准化模式联合3H干预对胃癌手术患者睡眠质量、心理状态及应激反应指标的影响

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癌症进展 2024年第6期22卷 655-658页

作者：徐珂张静文李建利沈裕厚新乡市中心医院/新乡医学院第四临床学院肿瘤外科河南新乡4530000

目的探讨标准化模式联合3H干预对胃癌手术患者睡眠质量、心理状态及应激反应指标的影响。方法根据干预方式的不同将80例胃癌手术患者分为常规组(n=39,常规干预)和3H组(n=41,标准化模式联合3H干预)。比较两组患者的术后恢复指标、睡眠... 详细信息

目的探讨标准化模式联合3H干预对胃癌手术患者睡眠质量、心理状态及应激反应指标的影响。方法根据干预方式的不同将80例胃癌手术患者分为常规组(n=39,常规干预)和3H组(n=41,标准化模式联合3H干预)。比较两组患者的术后恢复指标、睡眠质量[匹兹堡睡眠质量指数(PSQI)]、心理状态[抑郁自评量表(SDS)和焦虑自评量表(SAS)]、应激反应指标[白细胞介素-6(IL-6)、C反应蛋白(CRP)]及并发症发生情况。结果 3H组患者首次排气时间、首次进食时间、首次下床活动时间、术后住院时间均明显短于常规组,差异均有统计学意义(P﹤0.01)。干预后,两组患者PSQI、SDS、SAS评分均低于本组干预前,3H组患者PSQI、SDS、SAS评分均低于常规组,差异均有统计学意义(P﹤0.05)。干预后,两组患者IL-6、CRP水平均高于本组干预前,3H组患者IL-6、CRP水平均低于常规组,差异均有统计学意义(P﹤0.05)。3H组患者的并发症总发生率明显低于常规组(P﹤0.01)。结论标准化模式联合3H干预可改善胃癌手术患者的睡眠质量及心理状态,降低应激反应指标,缩短住院时间,有利于患者术后康复。

关键词：胃癌标准化模式 3H干预睡眠质量心理状态应激反应指标

基于风险理论的合闸过电压抑制方案评估方法研究

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山东电力技术 2024年第3期51卷 73-80页

作者：孙景文徐冉师伟姚金霞陈立征国网山东省电力公司电力科学研究院山东济南250003 山东建筑大学信息与电气工程学院山东济南250101

断路器合闸电阻是抑制电力系统合闸操作过电压的有效措施,线路避雷器起后备保护作用。然而随着输电线路变短以及避雷器性能提高,线路操作过电压有所下降;同时合闸电阻高成本、低可靠性的弊端凸显,过电压抑制方案的技术经济性缺乏量化的... 详细信息

断路器合闸电阻是抑制电力系统合闸操作过电压的有效措施,线路避雷器起后备保护作用。然而随着输电线路变短以及避雷器性能提高,线路操作过电压有所下降;同时合闸电阻高成本、低可靠性的弊端凸显,过电压抑制方案的技术经济性缺乏量化的综合评估。基于风险理论提出合闸过电压抑制方案评估方法,搭建系统沿线过电压仿真模型,定义计及闪络率、故障率、成本等多种因素的综合风险指标,实现过电压抑制方案技术经济性的量化评估。算例对实际500kV系统进行过电压仿真和风险指标计算分析,并基于所提评估方法对合闸电阻取消的可行性进行讨论,验证了所提评估方法可以合理量化过电压的抑制效果和存在的系统风险,为过电压抑制方案的选取提供有效评价。

关键词：操作过电压合闸电阻风险评估

Acquiescence in the Presence of Absurdity——On the Zero Degree Writing in Catch-22

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Comparative Literature:East & West 2013年第1期19卷 88-102页

作者： jingwen xu Sichuan University Shandong Polytechnic University

约瑟夫·海勒在《第二十二条军规》中以非介入式的、去感情化的零度写作方式完成了对作品中荒诞世界的客观描述,并加强了黑色幽默的效果。本文将分析作者如何通过第三人称叙述、人物单独的直接引语以及人物间的对话将作者在文本中的介... 详细信息

约瑟夫·海勒在《第二十二条军规》中以非介入式的、去感情化的零度写作方式完成了对作品中荒诞世界的客观描述,并加强了黑色幽默的效果。本文将分析作者如何通过第三人称叙述、人物单独的直接引语以及人物间的对话将作者在文本中的介入降至最低,并分析这种零度写作如何加强作品荒诞主题的表达,并带上作品创作时期的时代烙印。

关键词：作品第二十二条军规约瑟夫·海勒介入黑色幽默加强写作方式感情化作者直接引语

正念疗法对老年患者非全身麻醉术后认知功能及睡眠质量的影响

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四川精神卫生 2024年第2期37卷 120-124页

作者：徐敬文李作为兰林王帆刘洋张斐四川省精神卫生中心·绵阳市第三人民医院四川绵阳621000 四川大学华西医院四川成都610041 四川省医学科学院·四川省人民医院四川成都610072

背景术后认知功能障碍(POCD)是术后常见的并发症之一,老年患者发病率较高。POCD对患者术后康复影响较大。目的探讨正念疗法对老年患者非全身麻醉术后认知功能及睡眠质量的影响,为降低老年患者POCD发生风险、改善睡眠质量提供参考。方法... 详细信息

背景术后认知功能障碍(POCD)是术后常见的并发症之一,老年患者发病率较高。POCD对患者术后康复影响较大。目的探讨正念疗法对老年患者非全身麻醉术后认知功能及睡眠质量的影响,为降低老年患者POCD发生风险、改善睡眠质量提供参考。方法采用简单随机抽样法,选取2022年3月—2023年3月在绵阳市第三人民医院接受非全身麻醉手术的78例老年患者为研究对象,采用随机数字表法分为研究组和对照组各39例。两组均接受常规治疗及护理,研究组此基础上接受正念疗法干预。于术前1天以及术后第1、3、5天,采用简易精神状态量表(MMSE)评定患者的认知功能,于术前1天及术后第3天采用匹兹堡睡眠质量指数量表(PSQI)评定患者的睡眠质量。结果两组MMSE评分的时间效应、组间效应以及时间与组间的交互效应均有统计学意义(F=78.251、197.071、371.915,P均<0.05)。进一步分析显示,术后第1、3、5天,研究组MMSE评分均高于对照组,差异均有统计学意义(t=-3.579、-1.764、-0.253,P均<0.05)。术后第1、3、5天,研究组POCD发生率均低于对照组,差异均有统计学意义(χ^(2)=2.631、3.471、5.135,P均<0.05)。术后第3天,研究组PSQI总评分低于对照组(P<0.05),且研究组PSQI总评分、睡眠潜伏期、主观睡眠质量、日间功能障碍以及催眠药物使用因子评分均低于术前(F=43.175、12.594、11.092、4.579、3.514,P均<0.01)。结论正念疗法可能有助于降低老年患者非全身麻醉术POCD的发生率,并改善其睡眠质量。

关键词：术后认知功能障碍正念疗法睡眠质量老年人

白血病患者化疗后合并化脓性髋关节炎2例及文献复习

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中国医药 2024年第3期19卷 460-463页

作者：芮婧雯周必琪李沛城徐杨苏州大学附属第一医院血液科、国家血液系统疾病临床医学研究中心、江苏省血液研究所卫生部血栓与止血重点实验室、苏州大学造血干细胞移植研究所苏州215006 苏州大学附属第一医院介入科苏州215006

粒细胞缺乏感染是血液恶性肿瘤患者化疗后的一种严重并发症,其进展迅速,可能导致危及生命的并发症。其中少见部位的感染,由于诊断困难,经常出现误诊、漏诊等情况。目前正常人群中化脓性髋关节炎案例较少,而白血病化疗后合并化脓性髋关... 详细信息

粒细胞缺乏感染是血液恶性肿瘤患者化疗后的一种严重并发症,其进展迅速,可能导致危及生命的并发症。其中少见部位的感染,由于诊断困难,经常出现误诊、漏诊等情况。目前正常人群中化脓性髋关节炎案例较少,而白血病化疗后合并化脓性髋关节炎更为罕见,相关报道极少。本研究介绍了2例因白血病入院化疗后出现发热伴关节疼痛患者的诊疗经过,持续关注其体温及感染指标的变化、抗感染方案的改变,最终通过病理证实为化脓性髋关节炎。同时通过对相关文献进行复习总结,以期提高临床对粒细胞缺乏期罕见部位感染的识别和诊疗的认识。

关键词：白血病化脓性髋关节炎感染