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综合医院急诊科预检分诊病人精神行为异常评估的研究进展

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循证护理 2024年第6期10卷 1037-1041页

作者：宋亚男牟灵英郝冉冉代会贞杨丽梅丁翠翠曹国娜山东第二医科大学护理学院山东261053 山东第二医科大学附属医院

就综合医院急诊科预检分诊工作中精神行为异常病人评估及相关工具进行综述,以期为针对性地预防病人自伤、激越、暴力等事件提供参考,为制定急诊科就诊病人精神行为异常筛查工具提出建设性建议。

关键词：急诊预检分诊精神行为异常评估工具综述

Toeless and reversible DNA strand displacement based on Hoogsteen-bond triplex

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Chinese Chemical Letters 2024年第5期35卷 330-337页

作者： yang Qin Jiangtian Li Xuehao Zhang Kaixuan Wan Heao Zhang Feiyang Huang limei Wang Hongxun Wang Longjie Li Xianjin Xiao Institute of Reproductive Health Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430030China Department of Pancreatic Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Wuhan Polytechnic University Wuhan 430023China

Strand displacement reaction is a crucial component in the assembly of diverse DNA-based nanodevices,with the toehold-mediated strand displacement reaction representing the prevailing ***,the single-stranded Watson-Crick sticky region that serves as the trigger for strand displacement can also cause leakage reactions by introducing crosstalk in complex DNA ***,we proposed the toeless and reversible DNA strand displacement reaction based on the Hoogsteen-bond triplex,which is compatible with most of the existing DNA *** demonstrated that our proposed reaction can occur at pH 5 and can be reversed at pH *** also observed an approximately linear relationship between the degree of reaction and pH within the range of pH 5-6,providing the potential for precise regulation of the ***,by altering the sequence orientation,we have demonstrated that our proposed reaction can be initiated or regulated through the same toeless mechanism without the requirement for protonation in low pH *** on the proposed reaction principle,we further constructed a variety of DNA nanodevices,including two types of DNA logic gates that rely on pH 5/pH 9 changes for initiating and reversing:the AND gate and the OR *** also successfully constructed a DNA Walker based on our proposed reaction modes,which can move along a given track after the introduction of a programmable DNA sequence and complete a cycle after 4 *** findings suggest that this innovative approach will have broad utility in the development of DNA circuits,molecular sensors,and other complex biological systems.

关键词： DNA strand displacement Toeless Triplex DNA strands Reversible DNA circuit DNA walker

新型冠状病毒感染者入院时血清降钙素原、白细胞介素-6和白细胞介素-8水平及其在患者预后中的意义

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实用医学杂志 2024年第4期40卷 471-475页

作者：龙嗣博陈燕张鑫桐尹颜军杨丽梅郑迈克王潮虹孙晴晏君施亦衡时广利赵艳王桂荣首都医科大学附属北京胸科医院检验科北京101149

目的分析患者入院时血清降钙素原(PCT)和细胞因子水平对新型冠状病毒感染者(COVID-19)预后的预测价值。方法纳入2022年11月至2023年2月首都医科大学附属北京胸科医院收治的确诊COVID-19,采用化学发光法检测血清PCT水平,流式微球阵列法... 详细信息

目的分析患者入院时血清降钙素原(PCT)和细胞因子水平对新型冠状病毒感染者(COVID-19)预后的预测价值。方法纳入2022年11月至2023年2月首都医科大学附属北京胸科医院收治的确诊COVID-19,采用化学发光法检测血清PCT水平,流式微球阵列法检测血清细胞因子IL-1β、IL-2、IL-4、IL-5、IL-6、IL-8、IL-10、IL-12p70、IL-17A、IL-17F、IL-22、TNF-α、TNF-β、IFN-γ水平。将入住ICU、接受机械通气和院内死亡定义为预后不良,排除合并细菌感染的患者后,分析入院时血清中PCT和细胞因子水平与COVID-19患者预后的关系。结果共纳入176例资料完整的患者,其中PCT正常组134例,PCT升高组42例,中位年龄为71.50岁,男性占71.59%。PCT升高组患者ICU入住率(38.41%vs.13.11%,P<0.05)、机械通气率(76.92%vs.24.59%,P<0.001)和院内死亡率(38.46%vs.6.56%,P<0.001)均显著高于PCT正常组。预后不良患者血清中细胞因子IL-6(7.40 pg/mL vs.4.78 pg/mL,P<0.05)和IL-8(10.97 pg/mL vs.5.92 pg/mL,P<0.001)的水平显著高于预后良好者。根据ROC曲线计算,PCT、IL-6和IL-8预测COVID-19患者预后不良的曲线下面积分别为0.687、0.660和0.746;灵敏度分别为52.78%、55.17%和72.41%;特异度分别为81.58%、74.19%和74.19%。当PCT、IL-6和IL-8联合预测COVID-19患者预后时,曲线下面积为0.764,灵敏度为70.00%,特异度为80.00%。结论血清PCT和细胞因子IL-6、IL-8可作为COVID-19患者预后不良的预测标志物。

关键词：新型冠状病毒感染细胞因子降钙素原预后

Genetic and lipidomic analyses reveal the key role of lipid metabolism for cold tolerance in maize

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Journal of Genetics and Genomics 2024年第3期51卷 326-337页

作者： Lei Gao Haifang Jiang Minze Li Danfeng Wang Hongtao Xiang Rong Zeng limei Chen Xiaoyan Zhang Jianru Zuo Shuhua yang Yiting Shi State Key Laboratory of Plant Environmental Resilience College of Biological SciencesFrontiers Science Center for Molecular Design BreedingCenter for Crop Functional Genomics and Molecular BreedingChina Agricultural UniversityBeijing 100193China State Key Laboratory of Wheat&Maize Crop Science College of Life SciencesHenan Agricultural UniversityZhengzhouHenan 450002China State Key Laboratory of Plant Genomics Institute of Genetics and Developmental BiologyChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Suihua Branch of Heilongjiang Academy of Agricultural Machinery Sciences SuihuaHeilongjiang 152052China

Lipid remodeling is crucial for cold tolerance in ***,the precise alternations of lipidomics during cold responses remain elusive,especially in maize(Zea mays L.).In addition,the key genes responsible for cold tolerance in maize lipid metabolism have not been ***,we integrate lipidomic,transcriptomic,and genetic analysis to determine the profile of lipid remodeling caused by cold *** find that the homeostasis of cellular lipid metabolism is essential for maintaining cold tolerance of ***,we detect 210 lipid species belonging to 13 major classes,covering phospholipids,glycerides,glycolipids,and free fatty *** lipid metabolites undergo specific and selective alterations in response to cold stress,especially mono-/di-unsaturated lysophosphatidic acid,lysophosphatidylcholine,phosphatidylcholine,and phosphatidylinositol,as well as polyunsaturated phosphatidic acid,monogalactosyldiacylglycerol,diacylglycerol,and *** addition,we identify a subset of key enzymes,including ketoacyl-acyl-carrier protein synthase II(KAS II),acyl-carrier protein 2(ACP2),male sterility33(Ms33),and stearoyl-acyl-carrier protein desaturase 2(SAD2)involved in glycerolipid biosynthetic pathways are positive regulators of maize cold *** results reveal a comprehensive lipidomic profile during the cold response of maize and provide genetic resources for enhancing cold tolerance in crops.

关键词： Maize Cold stress Lipid metabolism Transcriptome Lipidomic

Targeted therapeutic effects of oral magnetically driven pectin nanoparticles containing chlorogenic acid on colon cancer

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Particuology 2024年第1期84卷 53-59页

作者： Huatai Zhu limei Zhang Fujia Kou Jingyang Zhao Jiandu Lei Jing He Beijing Key Laboratory of Lignocellulosic Chemistry Beijing Forestry UniversityBeijing100083China Institute of Biopharmaceutical and Health Engineering Tsinghua Shenzhen International Graduate SchoolTsinghua UniversityShenzhen518055China

Oral colonic nano-drug delivery system has attracted growing attention in treating colon cancer for their excellent ***,the unique and complex structure of the gastrointestinal tract is still an obstacle to the safe delivery of drugs targeting sites in colon ***,we designed magnetically driven dual-targeted oral colonic nanoparticles loaded with chlorogenic acid using pectin and oleic acid-modified iron oxide(Fe3O4@OA).Specific degradation of pectin by pectinase produced by colonic flora and magnetic fields applied to the colon confers specific targeting of nanoparticles to the *** order to overcome the challenge of preparing magnetically driven nanoparticles with small and homogeneous particle sizes by a single conventional method,we developed the combined ultrasound-emulsification *** average particle size of the prepared nanoparticles was 81.04±1.02 nm,which showed good drug release in the simulated colonic *** vitro anticancer studies,the drug-loaded nanoparticles possess an obvious toxicity and apoptosis-inducing ability against cancer ***,the hemolysis results demonstrated the safety of the nanoplatform(PET/CGA/Fe_(3)O_(4)@OA).This work holds broad prospects as a new treatment modality for colon cancer.

关键词： Pectin Chlorogenic acid Ultrasound-emulsion Magnetically driven Colon cancer Colon targeted

Design and test of the key components for a combing-type tobacco harvester

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International Journal of Agricultural and Biological Engineering 2024年第1期17卷 145-153页

作者： Chaoran Sun Shaohui Tan Songling Sun Mingtao Xiao limei Chen Wenke Ai Zhihua Qiu Ping Jiang yang He School of Mechanical and Electrical Engineering Hunan Agricultural UniversityChangsha 410128China Truking Technology Limited Ningxiang 410600HunanChina Construction of tobacco leaf production infrastructure of Hunan Province Company of China National Tobacco Corporation office Changsha 410009China

In response to the problems of low efficiency,high labor intensity,and low mechanization in manual tobacco harvesting,a comb-off tobacco picking device for southern hilly tobacco areas was designed following the agronomic requirements and the principle of manual picking of tobacco harvesting in southern *** device was composed of the power chassis,picking mechanism,and storage *** study involved the theoretical analysis,structural design,and modeling of the key components,such as chassis structure,combing-type picking mechanism,and power synchronization *** results of the motion analysis and calculation of the picking process demonstrated that the adjustment range of the comb chain elevation angles was from 12.4°to 20.9°,the comb rod installation distance was 76.2 mm,and the synchronizing mechanism transmission ratio was 3:***-factor test and three-factor three-level orthogonal test was performed with the forward speed of the chassis,the distance between the picking device baffles and the elevation angle of the chain with the combing bar as test factors,and the rate of broken and missed tobacco picking as evaluation *** was revealed that the optimal combination of the forward speed of the chassis,the distance between the baffles,and the chain elevation angle were 1.5 km/h,75 mm,and 12.4°,***,verification tests suggested that the breakage rate of tobacco leaves was 9.99%,and the probability of missed tobacco picking was 7.31%,both of which satisfy the agriculture requirements and the operational requirements in the agricultural machinery certification syllabus.

关键词： harvesting machinery leaf tobacco combing-type tiered harvest synchronizing mechanism

CRISPR基因编辑技术加速蔬菜作物遗传改良

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中国农学通报 2024年第24期40卷 107-115页

作者：任文静司劲超陈立杨丽梅庄木吕红豪王勇季家磊张扬勇中国农业科学院蔬菜花卉研究所蔬菜生物育种全国重点实验室北京100081

现代生物技术,特别是基于CRISPR/Cas系统的基因编辑技术,对作物遗传改良产生了深远影响。本文综合分析了CRISPR/Cas基因编辑系统的组成、机制,综述了基因编辑技术在蔬菜作物基因功能验证和作物遗传改良方面取得的突破性进展,及其在蔬菜... 详细信息

现代生物技术,特别是基于CRISPR/Cas系统的基因编辑技术,对作物遗传改良产生了深远影响。本文综合分析了CRISPR/Cas基因编辑系统的组成、机制,综述了基因编辑技术在蔬菜作物基因功能验证和作物遗传改良方面取得的突破性进展,及其在蔬菜作物如番茄、西瓜、甘蓝、胡萝卜和黄瓜等中的应用。CRISPR/Cas基因编辑系统是目前应用最广泛的基因编辑系统,为了加深对CRISPR/Cas基因编辑系统的了解、促进其在蔬菜作物改良中的重要作用,本研究探讨了影响遗传转化效率的因素,提出了提高转化效率的策略,讨论了当前技术的局限性,如作物转化再生难度和基因型的依赖性。本文强调,筛选易于遗传转化的品种、开发高效的植物转化和再生系统,以及创造更高效、精确和多功能的基因编辑工具是未来研究的关键方向。

关键词：现代育种技术 CRISPR/Cas系统 CRISPR基因编辑基因编辑效率基因功能验证作物遗传改良蔬菜作物改良遗传转化效率生物技术

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花似花,花非花——隐喻视角下的意象花卉

美术 2021年第1期 150-151页

作者：杨丽梅菏泽学院美术与设计学院

花与女人的关系非常密切,古人常把美丽柔弱的女人比喻成娇嫩的花。在中国文学的源头《诗经》里,花与女人之间就建立起了联系。如在《桃夭》篇中"桃之夭夭,灼灼其华",就以绽放的桃花比兴新娘。或许花朵鲜艳的色彩、动人的姿态都让人情不... 详细信息

花与女人的关系非常密切,古人常把美丽柔弱的女人比喻成娇嫩的花。在中国文学的源头《诗经》里,花与女人之间就建立起了联系。如在《桃夭》篇中"桃之夭夭,灼灼其华",就以绽放的桃花比兴新娘。或许花朵鲜艳的色彩、动人的姿态都让人情不自禁地想起女子的容貌和体态。花如女人,女子如花,花若与女人融为一体也就被称之为女人花。也许是因为生为女人,内向的性格,喜欢读古典诗词等个人特点,笔者从小就对花开花落之类安静而美好之事尤其向往。花卉也是十几年来笔者一直坚持的绘画题材,不过笔者对花卉的表达与传统做法不同,不去追求花卉的逼真写实.

关键词：绘画题材花开花落逼真写实古典诗词灼灼其华花卉桃之夭夭生为女人

Environmental benefits and farmers' adoption of winter cover crops in the North China Plain

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Pedosphere 2024年第1期34卷 159-169页

作者： Shufang GUO Yitao ZHANG limei ZHAI Jian LIU Hongyuan WANG Hongbin LIU State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China Key Laboratory of Nonpoint Source Pollution ControlMinistry of Agriculture and Rural AffairsInstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China Institute of Agricultural Environment and Resources Yunnan Academy of Agricultural SciencesKunming 650205China Shandong Yucheng Agro-ecosystem National Observation Research Station Key Laboratory of Ecosystem Network Observation and ModelingInstitute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China The Norwegian Institute of Bioeconomy Research(NIBIO) Akershus 1431Norway

The introduction of cover crops into monoculture systems to improve soil health has been widely adopted worldwide. However, little is known about the environmental risks and application prospects of different cover crops in spring maize(Zea mays L.) monocultures proposed in the North China Plain. A pot experiment was conducted to evaluate the effects of different winter cover crops on subsequent maize yield, soil fertility, and environmental risks of nitrogen(N) loss, and a questionnaire survey was conducted to examine factors influencing farmers' willingness to adopt cover crops in the North China Plain. Based on the same fertilization regime during the maize growing period, four winter cover crop treatments were set up, including bare fallow, hairy vetch(Vicia villosa Roth.), February orchid(Orychophragmus violaceus), and winter oilseed rape(Brassica campestris L.). The results indicated that winter cover crops significantly increased subsequent maize yield and soil organic carbon, total N, and microbial biomass carbon and N compared with the bare fallow *** incorporation of cover crops led to a negligible increase in nitrous oxide(N_(2)O) emissions and had a very limited effect on ammonia(NH_(3)) *** incorporation of February orchid and winter oilseed rape decreased nitrate leaching compared with the hairy vetch treatment in the maize growing *** N losses via N_(2)O and NH_(3) emissions and N leaching accounted for 71%–84% of the N surplus. However, yield increase and environmental benefits were not the main positive factors for farmers to accept cover crops. Financial incentive was rated by 83.9% of farmers as an “extremely important” factor, followed by other costs, when considering winter cover cropping. These results indicate that the environmental benefits depend on the type of cover crop. Maintaining high levels of soil fertility and maize yield, providing sufficient subsidies, and encouraging large-area cultivation of cover crops

关键词： cover crop N leaching NH_(3)emission N_(2)O emission spring maize willingness to accept