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Change of soil productivity in three different soils after long-term field fertilization treatments

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Journal of Integrative Agriculture 2020年第3期19卷 848-858页

作者： LIU Kai-lou HAN Tian-fu HUANG Jing ZHANG Shui-qing GAO Hong-jun ZHANG lu Asad Shah HUANG Shao-min ZHU Ping GAO Su-duan MA Chang-bao XUE yan-dong ZHANG Huimin National Engineering Laboratory for Improving Quality of Arable Land/Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural SciencesBeijing 100081P.R.China National Engineering and Technology Research Center for Red Soil Improvement/Jiangxi Institute of Red Soil Nanchang 331717P.R.China Institute of Plant Nutrition and Environmental Resources Science Henan Academy of Agricultural SciencesZhengzhou 450002P.R.China Institute of Agricultural Resource and Environment Jilin Academy of Agricultural SciencesChangchun 130033P.R.China San Joaquin Valley Agricultural Sciences Center USDA Agricultural Research ServiceCA 93648-9757USA Cultivated Land Quality Monitoring and Protection Center Ministry of of Agriculture and Rural AffairsBeijing 100125P.R.China

Soil productivity(SP) without external fertilization influence is an important indicator for the capacity of a soil to support crop ***,there have been difficulties in estimating values of SPs for soils after various long-term field treatments because the treatment without external fertilization is used but is depleted in soil nutrients,leading to erroneous *** objectives of this study were to estimate the change of SP across different cropping seasons using pot experiments,and to evaluate the steady SP value(which is defined by the basal contribution of soil itself to crop yield) after various longterm fertilization treatments in soils at different geographical *** pot experiments were conducted in Jinxian of Jiangxi Province with paddy soil,Zhengzhou of Henan Province with fluvo-aquic soil,and Gongzhuling of Jilin Province with black soils,*** were collected after long-term field fertilization treatments of no fertilizer(control;CK-F),chemical fertilizer(NPK-F),and combined chemical fertilizer with manure(NPKM-F).The soils received either no fertilizer(F0) or chemical fertilizer(F1) for 3-6 cropping seasons in pots,which include CK-P(control;no fertilizer from long-term field experiments for pot experiments),NPK-P(chemical fertilizer from long-term field experiments for pot experiments),and NPKM-P(combined chemical and organic fertilizers from long-term field experiments for pot experiments).The yield data were used to calculate SP *** initial SP values were high,but decreased rapidly until a relatively steady SP was achieved at or after about three cropping seasons for paddy and fluvo-aquic *** steady SP values in the third cropping season from CK-P,NPK-P,and NPKM-P treatments were 37.7,44.1,and 50.0% in the paddy soil,34.2,38.1,and 50.0% in the fluvo-aquic soil,with the highest value observed in the NPKM-P treatment for all ***,further research is required in the black soils to incorporate more than t

关键词： manure incorporation C/N ratio soil types grain yield

Highly resilient and fatigue-resistant poly(4-methyl-ε-caprolactone)porous scaffold fabricated via thiol-yne photo-crosslinking/salt-templating for soft tissue regeneration

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Bioactive Materials 2023年第10期28卷 311-325页

作者： Zhaochuang Wang Wenhao Zhang Guo Bai Qiaohui lu Xiaoyu Li yan Zhou Chi yang yan Xiao Meidong Lang Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of EducationSchool of Materials Science and EngineeringEast China University of Science and TechnologyShanghai200237PR China State Key Laboratory of Bioreactor Engineering School of BiotechnologyEast China University of Science and TechnologyShanghai200237PR China Shanghai Key Laboratory of Stomatology Shanghai Research Institute of StomatologyDepartment of Oral Surgery of Ninth People’s HospitalCollege of StomatologyShanghai Jiao Tong University School of MedicineShanghai200011PR China

Elastomeric scaffolds, individually customized to mimic the structural and mechanical properties of natural tissues have been used for tissue regeneration. In this regard, polyester elastic scaffolds with tunable mechanical properties and exceptional biological properties have been reported to provide mechanical support and structural integrity for tissue repair. Herein, poly(4-methyl-ε-caprolactone) (PMCL) was first double-terminated by alkynylation (PMCL-DY) as a liquid precursor at room temperature. Subsequently, three-dimensional porous scaffolds with custom shapes were fabricated from PMCL-DY via thiol-yne photocrosslinking using a practical salt template method. By manipulating the Mn of the precursor, the modulus of compression of the scaffold was easily adjusted. As evidenced by the complete recovery from 90% compression, the rapid recovery rate of >500 mm min􀀀 1, the extremely low energy loss coefficient of minimally invasive application potential. In vitro testing revealed that the 3D porous scaffold was biocompatible with rat bone marrow stromal cells (BMSCs), inducing BMSCs to differentiate into chondrogenic cells. In addition, the elastic porous scaffold demonstrated good regenerative efficiency in a 12-week rabbit cartilage defect model. Thus, the novel polyester scaffold with adaptable mechanical properties may have extensive applications in soft tissue regeneration.

关键词： Elastomeric scaffold Thiol-yne photo-crosslinking Fatigue resistance Tissue regeneration

Early Treatment for Laser-induced Maculopathy

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Chinese Medical Journal 2017年第17期130卷 2121-2122页

作者： yan-Yun Chen Ning lu Ji-Peng Li Jie Yu Lan Wang Beijing Tongren Eye Center Beijing Tongren Hospital Capital Medical University Beijing 100730 China Department of Ophthalmology Beijing United Family Hospital Beijing 100015 China

Accidental exposure to the laser may result in visual impairment from retinal ***-induced damages to the macula include outer retinal disruption,foveal hemorrhage,macular edema,epiretinal membrane,full thickness macular hole,etc.[1,2] There are some case reports of visual improvement following the use of oral corticosteroids,but till date,there is no known effective treatment for this condition.[3,4] We report a case series of laser-induced maculopathy treated with standard doses of oral corticosteroids.

关键词： Corticosteroid Laser Maculopathy

Conventional Acupuncture for Cardiac Arrhythmia：A Systematic Review of Randomized Controlled Trials

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Chinese Journal of Integrative Medicine 2018年第3期24卷 218-226页

作者： LIU Jing LI Si-nai LIU lu ZHOU Kun LI yan CUI Xiao-yun WAN Jie lu Jin-jin HUANG yan-chao WANG Xu-sheng LIN Qian Beijing University of Chinese Medicine Beijing 100078China Department of Cardiology Dongfang Hospital Beijing University of Chinese Medicine Beijing 100078 China Beijing Institute of Traditional Chinese Medicine Beijing Hospital of Traditional Chinese Medicine Capital Medical UniversityBeijing 100010 China Scientific Research Division Dongfang Hospital Beijing University of Chinese Medicine Beijing 100078China Intensive Care Unit Dongfang Hospital Beijing University of Chinese Medicine Beijing 100078 China

Objective：To exam the effect and safety of conventional acupuncture（CA） on cardiac ***：Nine medical databases were searched until February 2016 for randomized controlled *** was measured by Cochran Q ***-analysis was conducted if I2 was less than 85% and the characteristics of included trials were ***：Nine qualified studies involving 638 patients were *** 1 study had definitely low risk of bias,while 7 trials were rated as unclear and 1 as ***-analysis of CA alone did not have a significant benefit on response rate compared to amiodarone in patients with atrial fibrillation（Af） and atrial flutter（AF） [relative risk（RR）：1.09;95% confidence interval（CI）：0.79–1.49;P=0.61;I2=61%,P=0.11].However,1 study with higher methodological quality detected a lower recurrence rate of Af in CA alone as compared with sham acupuncture plus no treatment,and benefits on ventricular rate and time of conversion to normal sinus rhythm were found in CA alone group by 1 study,as well as the response rate in CA plus deslanoside group by another ***-analysis of CA plus anti-arrhythmia drug（AAD） was associated with a significant benefit on the response rate when compared with AAD alone in ventricular premature beat（VPB） patients（RR,1.19,95% CI：1.05–1.34;P=0.005;I2=13%,P=0.32）,and an improvement in quality-of-life score（QOLS） of VPB also showed in 1 individual ***,a lower heart rate was detected in the CA alone group by 1 individual study when compared with no treatment in sinus tachycardia patients（MD –21.84 [–27.21,–16.47]） and lower adverse events of CA alone were reported than ***：CA may be a useful and safe alternative or additive approach to AADs for cardiac arrhythmia,especially in VPB and Af patients,which mainly based on a pooled estimate and result from 1 study with higher methodological ***,we could not reach a robust conclusion due to low quality of overall evidence.

关键词： acupuncture cardiac arrhythmia systematic review

Design of an efficient collector for the HIAF electron cooling system

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Nuclear Science and Techniques 2021年第10期32卷 39-49页

作者： Mei-Tang Tang Li-Jun Mao Hai-Jiao lu Li-Xia Zhao Jie Li Xiao-Ping Sha Fu Ma Yun-Bin Zhou Kai-min yan Xiao-ming Ma Xiao-Dong yang Jian-Cheng yang Institute of Modern Physics Chinese Academy of ScienceLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China

A collector with high perveance,efficient recu-peration,and low secondary emissions is required for the 450-keV electron cooler in the HIAF accelerator *** optimize the collection efficiency of the collector,a simulation program,based on the Monte Carlo simulations,was developed in the world’s first attempt to calculate the electron collection *** this program,the backscattering electrons and secondary electrons generated on the collector surface are calculated using a Monte Carlo approach,and all electron trajectories in the collector region are tracked by the Runge–Kutta *** this paper,the features and structure of our program are *** backscattering electron yields,with various collector surface materials,are calculated using our ***,the collector efficiencies for various col-lector structures and electromagnetic fields are simulated and *** measurement results of the collection efficiency of the HIAF collector prototype and the CSRm synchrotron are also *** experimental results were in good agreement with the simulation results of our program.

关键词： Electron cooler Secondary electron Backscattering electron Monte Carlo method Dielectric function

MCP-1基因多态性与学龄前儿童下呼吸道感染的关联及其危险因素

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中华医院感染学杂志 2024年第9期34卷 1419-1422页

作者：任维华李伟华段伟静吕秀华燕民朱坤山东第一医科大学附属人民医院药剂科山东济南271199 山东第一医科大学附属人民医院儿科山东济南271199 莱芜技术学院医学技术与护理系山东济南271199

目的分析学龄前儿童下呼吸道感染危险因素及与单核细胞趋化蛋白-1(MCP-1)基因多态性的关联。方法选取山东第一医科大学附属人民医院2021年3月-2023年3月治疗的下呼吸道感染学龄前患儿126例为研究组,152名同期健康体检学龄前儿童为对照... 详细信息

目的分析学龄前儿童下呼吸道感染危险因素及与单核细胞趋化蛋白-1(MCP-1)基因多态性的关联。方法选取山东第一医科大学附属人民医院2021年3月-2023年3月治疗的下呼吸道感染学龄前患儿126例为研究组,152名同期健康体检学龄前儿童为对照组。分析下呼吸道感染病原菌分布,多因素分析学龄前儿童下呼吸道感染的危险因素,比较两组MCP-1基因2518位点A/G基因分布。结果感染患儿共分离出128株病原菌,革兰阴性菌(88株占68.75%),革兰阳性菌(40株占31.25%);哮喘、早产、每周零食摄入≥7次、家长吸烟、低出生体质量、外周血MCP-1表达水平较高均为学龄前下呼吸道感染的独立危险因素(P<0.05);两组研究对象MCP-1基因2518位点A/G基因型及等位基因频率比较差异无统计学意义。结论学龄前儿童下呼吸道感染病原菌以流感嗜血杆菌、金黄色葡萄球菌为主,与哮喘、早产、每周零食摄入≥7次、家长吸烟、低出生体质量、外周血MCP-1表达水平密切相关,与MCP-1基因分布无相关性。

关键词：下呼吸道感染儿童学龄前单核细胞趋化蛋白-1 病原菌危险因素

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初中生校园欺凌与心理亚健康的关系

中国心理卫生杂志 2024年第2期38卷 104-108页

作者：卢丹丹李芳王慧豪官越格桑曲珍袁靓燕虹俞斌武汉大学公共卫生学院武汉430071 武汉市疾病预防控制中心武汉430100

目的:探究初中生校园欺凌与心理亚健康的关系及心理韧性在其中的调节作用。方法:以武汉市2所初中10~14岁792名学生为研究对象。采用中文版Olweus欺凌问卷、青少年亚健康多维评定问卷及青少年心理韧性量表来测量学生的校园欺凌、心理亚... 详细信息

目的:探究初中生校园欺凌与心理亚健康的关系及心理韧性在其中的调节作用。方法:以武汉市2所初中10~14岁792名学生为研究对象。采用中文版Olweus欺凌问卷、青少年亚健康多维评定问卷及青少年心理韧性量表来测量学生的校园欺凌、心理亚健康和心理韧性水平。结果:受欺凌得分与心理亚健康得分正向关联(β=1.88);心理韧性得分在受欺凌得分与心理亚健康得分之间的调节作用有统计学意义(β=-0.07)。结论:初中生心理亚健康问题可能与受欺凌经历有关,心理韧性在受欺凌与心理亚健康的关系间可能有调节作用。

关键词：青少年校园欺凌心理亚健康心理韧性调节作用

基于遗传算法的风电齿轮传动系统参数优化设计

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兰州理工大学学报 2024年第2期50卷 31-35页

作者：王保民闫瑞翔房文博赵瑞平刘洪芹兰州理工大学机电工程学院甘肃兰州730050

齿轮箱是风力发电系统的重要部件,其体积大、重量高等问题制约了风电清洁能源的发展.以1.5 WM风力发电机组为研究对象,建立齿轮传动系统轻量化数学模型,并采用遗传算法进行优化求解.结果表明,采用遗传算法是可行的,优化后齿轮传动系统... 详细信息

齿轮箱是风力发电系统的重要部件,其体积大、重量高等问题制约了风电清洁能源的发展.以1.5 WM风力发电机组为研究对象,建立齿轮传动系统轻量化数学模型,并采用遗传算法进行优化求解.结果表明,采用遗传算法是可行的,优化后齿轮传动系统体积减少了4.59%,这将进一步减小齿轮传动系统箱体体积和总质量.通过计算行星轮系的传动效率,验证了优化结果的可行性,该研究将为风电齿轮传动系统轻量化设计提供新方法.

关键词：风电齿轮箱优化设计传动系统遗传算法传动效率

Implications of the EU’s Inclusion of Maritime Transport in the Emissions Trading System for Shipping Companies

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Engineering 2021年第5期7卷 554-557页

作者： Shuaian Wang lu Zhen Harilaos N.Psaraftis Ran yan Department of Logistics and Maritime Studies The Hong Kong Polytechnic UniversityHong Kong 999077China School of Management Shanghai UniversityShanghai 200444China Department of Management Engineering Technical University of DenmarkLyngby DK-2800Denmark

*** Maritime transport is the backbone of international *** amount of total international maritime trade in million tonnes loaded was 8408 in 2012 and had increased to 11076 by 2019,for an average annual increase of 3.12%.In early 2020,the world fleet contained 98140 ships of 100 gross tonnes and above with 2.06 million dead weight tonnage of capacity[1].The greenhouse gas(GHG)emissions from shipping activities are not *** to the fourth GHG study commissioned by the International Maritime Organization(IMO),in 2018,global shipping emitted a total of 1056 million tonnes of carbon dioxide(CO_(2)),accounting for around 2.89%of global anthropogenic CO_(2) emissions[2].Due to the international nature of shipping,efforts to control CO_(2) emissions from ships are absent from the Kyoto Protocol and the Paris *** an attempt to phase out carbon emissions from shipping entirely,the IMO formulated a strategy to cut the total annual GHG emissions from shipping by at least 50%from their 2008 levels by 2050[3];however,no mandatory rules have been promulgated since the release of this strategy.

关键词： backbone shipping entirely