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Spatial-temporal changes and driving factors of eco-environmental quality in the Three-North region of China

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Journal of Arid Land 2023年第3期15卷 231-252页

作者： long yi JIANG Fugen DENG Muli WANG Tianhong SUN Hua Research Center of Forestry Remote Sensing&Information Engineering Central South University of Forestry and TechnologyChangsha 410004China Key Laboratory of Forestry Remote Sensing Based Big Data&Ecological Security for Hunan Province Changsha 410004China Key Laboratory of National Forestry&Grassland Administration on Forest Resources Management and Monitoring in Southern Area Changsha 410004China

Eco-environmental quality is a measure of the suitability of the ecological environment for human survival and socioeconomic *** the spatial-temporal distribution and variation trend of eco-environmental quality is essential for environmental protection and ecological *** remote sensing ecological index(RSEI)can quickly and objectively quantify eco-environmental quality and has been extensively utilized in regional ecological environment *** this paper,Moderate Resolution Imaging Spectroradiometer(MODIS)images during the growing period(July-September)from 2000 to 2020 were obtained from the Google Earth Engine(GEE)platform to calculate the RSEI in the three northern regions of China(the Three-North region).The Theil-Sen median trend method combined with the Mann-Kendall test was used to analyze the spatial-temporal variation trend of eco-environmental quality,and the Hurst exponent and the Theil-Sen median trend were superimposed to predict the future evolution trend of eco-environmental *** addition,ten variables from two categories of natural and anthropogenic factors were analyzed to determine the drivers of the spatial differentiation of eco-environmental quality by the geographical *** results showed that from 2000 to 2020,the RSEI in the Three-North region exhibited obvious regional characteristics:the RSEI values in Northwest China were generally between 0.2 and 0.4;the RSEI values in North China gradually increased from north to south,ranging from 0.2 to 0.8;and the RSEI values in Northeast China were mostly above *** average RSEI value in the Three-North region increased at an average growth rate of 0.0016/a,showing the spatial distribution characteristics of overall improvement and local degradation in eco-environmental quality,of which the areas with improved,basically stable and degraded eco-environmental quality accounted for 65.39%,26.82%and 7.79%of the total study area,*** Hurst

关键词： eco-environmental quality remote sensing ecological index Google Earth Engine Hurst exponent geographical detector Three-North region of China

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3个中华圆田螺养殖群体的肌肉营养成分分析

饲料研究 2024年第8期47卷 126-131页

作者：刘康莫飞龙龙宜楠张盛卢玉典杨宾兰甘宝江韦玲静广西壮族自治区水产引育种中心广西南宁530031

试验旨在研究和分析3个养殖群体中华圆田螺(Cipangopaludina cathayensis)肌肉常规营养成分、氨基酸、脂肪酸和矿物元素组成和含量,为中华圆田螺的种质资源开发利用提供参考。3个养殖群体选取180只平均体重为(32.12±0.17) g的中华圆田...

试验旨在研究和分析3个养殖群体中华圆田螺(Cipangopaludina cathayensis)肌肉常规营养成分、氨基酸、脂肪酸和矿物元素组成和含量,为中华圆田螺的种质资源开发利用提供参考。3个养殖群体选取180只平均体重为(32.12±0.17) g的中华圆田螺,随机分为3组,每组60只,去壳后取肌肉检测其营养成分。结果表明:陆川县群体的中华圆田螺肌肉粗蛋白、氨基酸总量、必需氨基酸总量和鲜味氨基酸总量均显著高于其他群体(P0.05)。柳江区群体的氨基酸评分、化学评分和必需氨基酸指数最高。陆川县群体肌肉中不饱和脂肪酸和多不饱和脂肪酸含量均显著高于其他群体,且动脉粥样硬化指数(IA)、血栓形成指数(IT)均低于其他群体(P0.05),3个群体的Σn-3/Σn-6 PUFA比值均符合FAO/WHO推荐人类饮食推荐值(0.1~0.2)。融水县群体肌肉中的P、Ca含量显著高于其他群体(P0.05)。研究表明,3个养殖群体中华圆田螺肌肉中蛋白质含量均较高,脂肪含量较低,鲜味氨基酸和不饱和脂肪酸含量较高,陆川县群体肌肉的营养价值优于其他群体。

关键词：中华圆田螺营养成分氨基酸脂肪酸

氟噻草胺与异丙隆复配防除冬小麦田杂草效果及对小麦产量的影响

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湖南农业科学 2024年第7期 70-73页

作者：朱德涛周勇满益龙安徽远景作物保护有限公司安徽淮南232000 湖南省农业生物技术研究所湖南长沙410125

为探明氟噻草胺与异丙隆复配对冬小麦田一年生杂草的防治效果及对小麦产量的影响,以“马兰一号”、播娘蒿和雀麦为调查对象,采用田间试验,测定了不同剂量35%氟噻草胺·异丙隆悬浮剂对冬小麦田一年生杂草的株防效、鲜重防效及冬小麦产量...

为探明氟噻草胺与异丙隆复配对冬小麦田一年生杂草的防治效果及对小麦产量的影响,以“马兰一号”、播娘蒿和雀麦为调查对象,采用田间试验,测定了不同剂量35%氟噻草胺·异丙隆悬浮剂对冬小麦田一年生杂草的株防效、鲜重防效及冬小麦产量。试验结果表明:在冬小麦1叶一心期至2叶一心期,一年生杂草2~5叶期,以35%氟噻草胺·异丙隆悬浮剂喷雾处理茎叶,对试验地播娘蒿和雀麦均有较好的防效,末次株防效为83.47%~88.53%,鲜重防效为84.92%~90.81%,且对冬小麦安全,其产量与人工除草的产量差异不显著,显著高于空白对照,有较高的增产率。35%氟噻草胺·异丙隆悬浮剂推荐剂量为420~840 g.a.i./hm^(2)。

关键词：氟噻草胺异丙隆复配冬小麦产量

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Separation/enrichment of the low-content high molecular weight natural protein using protein-imprinted polymers with ARPCs

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Science China Chemistry 2009年第9期52卷 1388-1393页

作者： XIA JianJun long yi GUO MinJie WANG ying MI HuaiFeng Biochemical Section of Key Laboratory of Functional Polymer Materials Ministry of Education of ChinaInstitute of Polymer ChemistryNankai UniversityTianjin 300071China

We introduce a new method for separation/enrichment of the low-content cellular protein in high mo-lecular weight on the basis of molecular imprinting. The template protein, bacterial cloned immu-noglobulin binding protein (BiP), was selectively assembled with assistant recognition polymer chains (ARPCs) from their library, which consists of numerous limited length polymer chains with randomly distributed recognition and immobilizing sites. The assemblies of proteins and ARPCs were adsorbed by porous polymeric beads and immobilized by cross-linking polymerization. After the template was removed, the synthesized imprinted polymer was used to adsorb authentic BiP from endoplasmic re-ticulum (ER) extract, and its proportional content was enriched 45 times. It is the first time that the low-content cellular natural protein, whose molecular weight reaches 78 kDa, is enriched by molecular imprinting.

关键词： molecular imprinting technique assistant recognition polymer chains (ARPCs) bacterial cloned protein high molecular weight protein

Microstructure-mechanical property relationship in Ti-Mo microalloyed steel with random and interphase precipitates

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Journal of Iron and Steel Research International 2019年第8期26卷 838-845页

作者： Hai-long yi Lu-ran Zhang Rui-hai Duan Xin-zeng Liang State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110819 Liaoning China

The relationship between microstructure and mechanical properties of Ti-Mo microalloyed steels composed of ferrite and bainite with nanometer-sized carbides and isothermally transformed at different temperatures and time was systematically investigated by tensile test, hardness test, and transmission electron microscopy. Ferrite formed at high temperatures exhibited both planar/curved sheet-like dispersions of interphase precipitates and random dispersion precipitates, with the interphase precipitates being the dominant morphology. In contrast, bainite formed at low temperatures exhibited only random dispersion precipitates. Furthermore, random dispersion precipitates and interphase precipitates were observed within the same ferrite grains. The mechanical properties of the ferrite specimen were superior to those of the bainite specimen. The stress-strain curves of both specimens indicated continuous yielding, high strength, and sufficient tensile elongation. The strengthening of the ferrite specimen was attributed to grain size strengthening, dislocation strengthening, and precipitation hardening, and the degree of precipitation strengthening was approximately 300 MPa.

关键词： Mechanical property Interphase precipitate Dispersion precipitate Precipitation strengthening Ti-Mo microalloyed stee

新时代做好非公有制经济人士统战工作的路径探析

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湖北科技学院学报 2024年第1期44卷 22-27页

作者：赵一龙彭攀廖烨炀武汉理工大学马克思主义学院湖北武汉430070

非公有制经济人士思想政治引领是新时代统战工作的重要组成部分,是巩固党的执政基础、促进非公有制经济健康发展和非公有制经济人士健康成长的必然要求。面对新时代新形势新任务,要立足于提高对非公有制经济人士统战工作重要性的认识,...

非公有制经济人士思想政治引领是新时代统战工作的重要组成部分,是巩固党的执政基础、促进非公有制经济健康发展和非公有制经济人士健康成长的必然要求。面对新时代新形势新任务,要立足于提高对非公有制经济人士统战工作重要性的认识,通过加大政治引领和思想引导力度,筑牢思想政治工作基础、加强非公有制经济人士的队伍建设、促进社会责任感的提升,以“两个健康”深化政企联系,持续助力优化营商环境等方面加强非公有制经济人士统战工作,充分发挥统一战线“统战性、经济性、民间性”三大功能,努力把广大非公有制经济人士团结在党的周围,为全面建设社会主义现代化国家、实现中华民族伟大复兴凝聚起强大力量。

关键词：非公有制经济人士统战工作新时代

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2种药剂复配对黄瓜根结线虫的防治效果研究

湖南农业科学 2024年第8期 57-59,65页

作者：朱德涛周勇满益龙安徽远景作物保护有限公司安徽淮南232000 湖南省农业生物技术研究所湖南长沙410125

为了测定阿维菌素和氟吡菌酰胺复配的60%阿维·氟吡菌酰胺水分散粒剂的防治效果及最佳用药量,采用田间试验,设置不同剂量60%阿维·氟吡菌酰胺水分散粒剂、0.5%阿维菌素颗粒剂、41.7%氟吡菌酰胺悬浮剂和清水对照共6个处理,检测不同剂量...

为了测定阿维菌素和氟吡菌酰胺复配的60%阿维·氟吡菌酰胺水分散粒剂的防治效果及最佳用药量,采用田间试验,设置不同剂量60%阿维·氟吡菌酰胺水分散粒剂、0.5%阿维菌素颗粒剂、41.7%氟吡菌酰胺悬浮剂和清水对照共6个处理,检测不同剂量药剂对黄瓜根结线虫病的防治效果和对黄瓜产量的影响。结果表明:60%阿维·氟吡菌酰胺水分散粒剂在黄瓜苗移栽缓苗后进行灌根1次,对黄瓜根结线虫病有较好的防效,施药后75 d防效为79.26%~82.66%,收获期防效为75.36%~78.47%,对黄瓜安全,且产量显著高于对照,有较高的增产率,推荐剂量为540.0~720.0 g.a.i./hm^(2)。

关键词：阿维菌素氟吡菌酰胺黄瓜根结线虫病产量

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匹莫范色林的临床研究进展

临床药物治疗杂志 2024年第3期22卷 1-6页

作者：闫奕龙杨莉赵志刚首都医科大学附属北京天坛医院药学部北京100070 首都医科大学药学院临床药学系北京100069

2016年4月,匹莫范色林获FDA批准上市,成为首款用于帕金森病患者幻觉和妄想症状的药物。匹莫范色林是选择性5-羟色胺2A受体的反向激动剂,血浆t_(1/2)约为57 h,T_(max)为6 h,经细胞色素P4503 A4酶代谢,其与该酶抑制剂或诱导剂同时使用时...

2016年4月,匹莫范色林获FDA批准上市,成为首款用于帕金森病患者幻觉和妄想症状的药物。匹莫范色林是选择性5-羟色胺2A受体的反向激动剂,血浆t_(1/2)约为57 h,T_(max)为6 h,经细胞色素P4503 A4酶代谢,其与该酶抑制剂或诱导剂同时使用时应警惕药物相互作用的发生。近年来,开展匹莫范色林临床试验的适应证领域逐渐增多,主要针对Ⅱ、Ⅲ、Ⅳ期的临床试验。研究发现,匹莫范色林不仅对帕金森病患者的精神症状有明确的疗效和安全性,对重度抑郁症、痴呆相关精神病、阿尔茨海默病相关精神病、精神分裂症阴性症状、阻塞性睡眠呼吸暂停和创伤后应激障碍可能同样存在治疗潜力。

关键词：匹莫范色林帕金森病临床研究幻觉妄想安全性

Tunable liquid crystal grating based holographic 3D display system with wide viewing angle and large size

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Light(Science & Applications) 2022年第7期11卷 1575-1584页

作者： yi-long Li Nan-Nan Li Di Wang Fan Chu Sin-Doo Lee yi-Wei Zheng Qiong-Hua Wang School of Instrumentation and Optoelectronic Engineering Beihang UniversityBeijingChina Display Technology Research Center Seoul National UniversityGwanak-guSeoulRepublic of Korea

As one of the most ideal display approaches,holographic 3-dimensional(3D)display has always been a research hotspot since the holographic images reproduced in such system are very similar to what humans see the actual ***,current holographic 3D displays suffer from critical bottlenecks of narrow viewing angle and small ***,we propose a tunable liquid crystal grating-based holographic 3D display system with wide viewing angle and large *** tunable liquid crystal grating,providing an adjustable period and the secondary diffraction of the reconstructed image,enables to simultaneously implement two different hologram generation methods in achieving wide viewing angle and enlarged size,*** using the secondary diffraction mechanism of the tunable liquid crystal grating,the proposed system breaks through the limitations of narrow viewing angle and small size of holographic 3D *** proposed system shows a viewing angle of 57.4°,which is nearly 7 times of the conventional case with a single spatial light modulator,and the size of the reconstructed image is enlarged by about *** proposed system will have wide applications in medical diagnosis,advertising,education and entertainment and other fields.

关键词： holographic system angle