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Height connection across sea by using satellite altimetry data sets,ellipsoidal heights,astrogeodetic deflections of the vertical,and an Earth Gravity Model

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Geodesy and Geodynamics 2023年第4期14卷 347-354页

作者： jianbo Wang Xinmin Qi Kai Luo Zhengyuan Li Ruikang zhou Jinyun guo The School of Marine Technology and Geomatics Jiangsu Ocean UniversityLianyungang 222005China The Key Laboratory of Marine Environmental Survey Technology and Application Ministry of Natural ResourcesGuangzhou 510300China The South China Sea Marine Survey and Technology Center State Oceanic AdministrationGuangzhou 510300China The College of Geodesy and Geomatics Shandong University of Science and TechnologyQingdao 266590China

Islands and the mainland are separated by seas,and the distances between them might be so long that the height on the mainland cannot be exactly translated to the islands,resulting in different height systems on the mainland and the *** this study,we used astrogeodetic deflections of the vertical and ellipsoidal heights of points on the mainland and island near their coastlines to implement height connection across sea ***,the modeled gravity and modeled astrogeodetic vertical deflections of segmentation points along connecting routes over the sea between the mainland and the island were determined by Earth Gravity Model(EGM),and the ellipsoidal heights of segmentation points were determined by the satellite altimetry data ***,we used a linear interpolation model to increase the precision of the vertical deflections of segmentation ***,we computed the geopotential difference of points between the mainland and the island using a method derived from geopotential theory and the astronomical leveling ***,we estimated the normal height of the point on the island using the geopotential-difference iterative computation *** observed data of normal heights,ellipsoidal heights,and astrogeodetic vertical deflections referring to height sites in Qingdao,Shandong Province,we conducted a numerical experiment involving the normal height connection across sea *** determined the data of the ellipsoidal heights and gravity of segmentation points along the connecting route across the water in the numerical experiment using *** distance of the height connection across the sea was approximately 10.5 *** to China's official leveling specifications,the experimental results met the criterion of third-class leveling precision.

关键词： Height datum connection across sea areas Geopotential difference Normal heights Astrogeodetic vertical deflections Islands

基于“肠-肝-脑轴”的通腑法治疗脑出血的理论研究

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中医药临床杂志 2024年第8期36卷 1428-1431页

作者：王雯蔺晓源周旭晴王旭郭纯湖南中医药大学第一中医临床学院湖南长沙410007 湖南中医药大学第一附属医院湖南长沙410007

脑出血的基本病机是阴阳失调,气血逆乱,上犯于脑。通腑法可通过通降腑气以协调气机,达到气血和调、脑清神聪的效果。“肠-肝-脑轴”是指肠、肝、脑各自发挥其正常生理功能以维持正常气血运行的一条气机轴。文章从中西医维度阐述“肠-肝... 详细信息

脑出血的基本病机是阴阳失调,气血逆乱,上犯于脑。通腑法可通过通降腑气以协调气机,达到气血和调、脑清神聪的效果。“肠-肝-脑轴”是指肠、肝、脑各自发挥其正常生理功能以维持正常气血运行的一条气机轴。文章从中西医维度阐述“肠-肝-脑轴”的内涵并以此为基础探讨通腑法治疗脑出血的理论研究,为挖掘通腑法治疗脑出血的作用机制提供新的思路。

关键词：脑出血通腑法 “肠-肝-脑轴”

南宁市一次非汛期暖区极端短时强降雨形成原因分析

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气象研究与应用 2024年第2期45卷 120-125页

作者：郑贤黄莉李紫甜郭雨奇周琰南宁市气象局南宁530022 南宁市邕宁区气象局南宁530200

利用探空、卫星云图、多普勒雷达及加密自动观测资料,分析南宁市2020年3月25日极端短时强降雨的形成原因。结果表明,此次过程没有切变线及锋面参与,是一次弱强迫环境下的暖区暴雨过程,两支高空槽的存在提供天气背景场:高原槽东移使南宁... 详细信息

利用探空、卫星云图、多普勒雷达及加密自动观测资料,分析南宁市2020年3月25日极端短时强降雨的形成原因。结果表明,此次过程没有切变线及锋面参与,是一次弱强迫环境下的暖区暴雨过程,两支高空槽的存在提供天气背景场:高原槽东移使南宁上空处于上干冷下暖湿的对流不稳定状态,高原槽与副高的对峙促进低层双低空南风急流的生成和维持;南支槽则从抬升暖湿气流、槽前正涡度辐合上升及引导暖湿水汽输送三个方面为强降雨的发生提供优越的动力、热力和水汽条件;双低空南风急流为极端短时强降水提供充足的水汽和热力条件,超低空急流出口区的辐合和低空急流入口区的辐散出现的耦合配置,加强中尺度抬升和水汽辐合,促进对流的发生;925 hPa急流顶端的暖湿气团与桂北相对干冷气团形成的露点锋,是对流不稳定能量爆发的触发机制,在925 hPa东南急流顶端,露点锋南侧形成此次过程的最强降雨。

关键词：极端短时强降雨双低空急流中尺度露点锋弱强迫环境

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超疏水改性水泥基材料设计及性能研究

长沙理工大学学报（自然科学版） 2024年第4期21卷 176-187页

作者：周剑波叶群山郭厚青长沙理工大学交通运输工程学院湖南长沙410114

【目的】研究纳米二氧化硅和硅氧烷对水泥基材料的超疏水改性效果及其性能影响。【方法】以水泥材料为主体,通过正交试验方法优选改性材料十二烷基三甲氧基硅烷(dodecyltrimethoxysilane,DTES)、纳米二氧化硅(nano-silica,NS)和聚羧酸... 详细信息

【目的】研究纳米二氧化硅和硅氧烷对水泥基材料的超疏水改性效果及其性能影响。【方法】以水泥材料为主体,通过正交试验方法优选改性材料十二烷基三甲氧基硅烷(dodecyltrimethoxysilane,DTES)、纳米二氧化硅(nano-silica,NS)和聚羧酸高效减水剂(polycarboxylate superplasticizer,PCE)的最佳配比,并采用强度试验、水化热测试、水接触角测量和毛细吸水试验评估改性材料对水泥力学性能和疏水性能的作用。【结果】DTES、NS和PCE的最佳质量分数分别为3.00%、1.80%和0.25%;改性水泥试样表面的水接触角高达152.50°,毛细吸水系数降低91%以上,3 d抗折强度、28 d抗压强度分别下降19%、12%。【结论】改性材料的协同作用使水泥基材料表面达到超疏水状态,同时具备良好的抗水渗透性能,其中DTES影响水泥强度,NS对抗压强度和后期抗折强度起增强作用。

关键词：超疏水纳米二氧化硅水泥基材料正交试验力学性能

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从脾肺辨治阴虚痰火型流行性感冒后久咳不愈

首都食品与医药 2024年第8期31卷 157-159页

作者：金跃兰郭兰中周建刚浙江省东阳市歌山镇卫生院浙江金华322100 浙江省东阳市妇幼保健院浙江金华322100

咳嗽既是独立疾病,也是多种肺系疾病的常见症状,特别是感受疫毒后,常遗留久咳不愈。既往临床治疗多从肺论治,然“五脏六腑皆令人咳,非独肺也”。中医诊疗重视个体体质、生活环境、疫毒特点等,强调因人而异。结合浙江地区环境特点、当前... 详细信息

咳嗽既是独立疾病,也是多种肺系疾病的常见症状,特别是感受疫毒后,常遗留久咳不愈。既往临床治疗多从肺论治,然“五脏六腑皆令人咳,非独肺也”。中医诊疗重视个体体质、生活环境、疫毒特点等,强调因人而异。结合浙江地区环境特点、当前生活饮食习惯、时疫特点,流行性病毒感染后多从热化,加之平素脾虚气弱,患者通常内有伏痰,阴虚痰火型咳嗽在临床较为多见。治疗当从脾肺论治,注重健脾助运,杜绝生痰之源,又可使气血生化有源,濡养肺脏;顾护肺卫,使营卫调和,可抵御外邪反复侵袭,使内外皆安,诸证自除。

关键词：流行性感冒咳嗽阴虚痰火

Function toggle of tumor microenvironment responsive nanoagent for highly efficient free radical stress enhanced chemodynamic therapy

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Nano Research 2022年第9期15卷 8228-8236页

作者： Xueting Yang Shuaitian guo Li Wang Shanyue Guan Shuyun zhou Jun Lu State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100190China Beijing Advanced Innovation Center for Soft Mater Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China

In contrast to reactive oxygen species(ROS),the generation of oxygen-irrelevant free radicals is oxygen-and H2O2-independent in cell,which can offer novel opportunities to maximum the chemodynamic therapy(CDT)***,an H2O2-independent“functional reversion”strategy based on tumor microenvironment(TME)-toggled C-free radical generation for CDT is developed by confining astaxanthin(ATX)on the NiFe-layered double hydroxide(LDH)nanosheets(denoted as ATX/LDH).The unique ATX/LDH can demonstrate outstanding TME-responsive C-free radical generation performance by proton coupled electron transfer(PCET),owing to the specific ATX activation by unsaturated Fe sites on the LDH nanosheets formed under ***,the Brönsted base sites of LDH hydroxide layers can promote the generation of neutral ATX C-free radicals by capturing the protons generated in the ATX activation ***,ATX/LDH maintain antioxidant performance to prevent normal tissue cancerization due to the synergy of LDH nanosheets and antioxidative *** addition,C-free radical can compromise the antioxidant defense in cells to the maximum extent,compared with *** free radicals burst under TME can significantly elevate free radical stress and induce cancer cell *** strategy can realize TME-toggled C free radical generation and perform free radical stress enhanced CDT.

关键词： ultrathin layered double hydroxide nanosheets astaxanthin free radical chemodynamic therapy

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烧成制度对高铝粉煤灰发泡陶瓷孔结构的影响

中国陶瓷 2024年第8期60卷 55-61页

作者：范建成郭振宇华培宇吕宝伟池国恒张圣杰周立斌内蒙古先进陶瓷设计院有限公司鄂尔多斯017000

以准格尔地区的高铝粉煤灰、准格尔周边地区钾长石为主要原料制备发泡陶瓷,探究了不同烧成制度(最高烧成温度、保温时间)对发泡陶瓷样品孔结构(孔均匀度、孔径、表观孔壁厚度)以及体积密度、抗压强度、吸水率的影响规律。研究结果表明,... 详细信息

以准格尔地区的高铝粉煤灰、准格尔周边地区钾长石为主要原料制备发泡陶瓷,探究了不同烧成制度(最高烧成温度、保温时间)对发泡陶瓷样品孔结构(孔均匀度、孔径、表观孔壁厚度)以及体积密度、抗压强度、吸水率的影响规律。研究结果表明,最高烧成温度和保温时间对粉煤灰基发泡陶瓷的体积密度、抗压强度、吸水率影响较大,在烧成范围内,升高烧成温度和延长保温时间会使烧成样品孔径增大,孔均匀度提升,孔壁变薄,体积密度降低,抗压强度降低,吸水率增大。

关键词：高铝粉煤灰发泡陶瓷烧成温度保温时间孔结构

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高层办公综合楼大堂优化设计探讨

广州建筑 2024年第6期52卷 113-116页

作者：文爱元张彤周治国广东华工工程建设监理有限公司广州510640 广州市设计院集团有限公司广州510620 广州市建筑科学研究院集团有限公司广州510440

本文以广州市白云区某高层办公综合楼施工阶段大堂动态优化设计为例,旨在探讨高层办公综合楼大堂的建筑优化设计,通过充分挖掘原施工图设计可优化潜力,并从大堂空间的功能性、艺术性和人性化需求出发,提出将原施工图设计大堂二层内走廊... 详细信息

本文以广州市白云区某高层办公综合楼施工阶段大堂动态优化设计为例,旨在探讨高层办公综合楼大堂的建筑优化设计,通过充分挖掘原施工图设计可优化潜力,并从大堂空间的功能性、艺术性和人性化需求出发,提出将原施工图设计大堂二层内走廊取消、打通既有安全疏散出口、增设安全疏散出口等一系列优化设计策略,以期提升高层办公综合楼大堂的使用与视觉体验和整体形象与品质。

关键词：高层办公综合楼大堂设计优化设计功能性艺术性人性化

Formation of Phosphorous Surface Inverse Segregation in Twin-Roll Cast Strips of Low-Carbon Steels

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Journal of Iron and Steel Research International 2011年第2期18卷 18-23页

作者： zhou guo-ping LIU Zhen-yu YU Shi-chuan CHEN Jun QIU Yi-qing WANG guo-dong Strip Cold Rolling Plant Tangshan Iron and Steel Group Tangshan 063016 Hebei China State Key Laboratory of Rolling and Automation Northeastern University Shenyang 110004 Liaoning China

The formation of phosphorous surface inverse segregation （SIS） in twin-roll cast strips of low-carbon steels was studied. High phosphorous strips were fabricated by using a pilot twin-roll strip caster and a melt/substrate contacting apparatus, respectively. Solidification structures of strips were observed and analyzed, and phosphorus distributions along longitudinal sections of strips were investigated and discussed. The results showed that solidification structures of all strips were columnar grains, either integrated or coarse in the strip made by the melt/substrate contacting apparatus or damaged in some degree in cast strips; and that during cast strip solidification, enrichment of phosphorus occurred between columnar grains, and the average phosphorus concentration near the surface in the strip with 0.15% of phosphorus was measured to be about 0.27% which was obviously higher than that in the bulk.

关键词： strip casting phosphorus enrichment inverse segregation steel solidification