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Coastal zone and its sustainable development

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Journal of Geographical Sciences 1999年第3期9卷 273-279页

作者： CHEN Shu-peng LI Guo-sheng SHAO yu-bin(LREIS, Institute of Geography, Chinese Academy of Sciences, Beijing 100101, China)

Coastal zone, a boundary shared by land and occo and the baseline to understand the earth,has become a very important part of earth system science and for global change study. From the viewpoint of society and economy, the coastal zone is the prosperous forefront for social development Butis also gives rise to a series of abuses, leading to destruction of resources and environment Theseproblems have become serious obstacles restricting the sustainability in thes area. Therefore, we mustemphasize on the study of the coastal zone, not ouly on its land part but also its ocean part. In order torealise sustainable development of coastal zone, multi-disciplinery studies and integration of naturalsciences with social sciences are necessary and more attention shoud be focused on monitoring, andplanning of coastal zone by utilizing GIS (geographical information system), satellite geo-observationsystem, GPS (global position system) and global communication network technologies.

关键词： coastal zone land-ocean interaction geographical location sustainable development

The RCT Approach for Cell Coverage Prediction (Ⅰ) : Principles

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Wuhan University Journal of Natural Sciences 2001年第4期6卷 791-795页

作者： yu sheng bing, Xu Ji sheng  School of Electronic Information, Wuhan University, Wuhan 430072, China School of Electronic Information Wuhan University

A new method for the coverage prediction of Cellular Mobile Radio (CMR) system is developed and its basic principle is presented. Unlike the Statistical Prediction Model (SPM) that estimates propagation loss by empirical formulas or the Deterministic Prediction Model (DPM) that reckons propagation loss with analytical expressions, the Radio Computerized Tomography (RCT) method does not seek to express the propagation loss explicitly. The 2 D distribution of propagation loss factor is computed using CT technique, based on measured data collected through drive test under appropriate geometric constraint. The total propagation loss can be obtained by integral of propagation loss factor along the equivalent ray path. The advantages and limitations of the technique, as well as its implementation are discussed.

关键词： Cellular Mobile Radio(CMR) Radio Computerized Tomography(RCT) reconstruction cell coverage prediction propagation loss

Exercise promotes osteogenic differentiation by activating the long non-coding RNA H19/microRNA-149 axis

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World Journal of Orthopedics 2024年第4期15卷 363-378页

作者： Xu-Chang Zhou Dong-Xue Wang Chun-yu Zhang Ya-Jing Yang Ruo-Bing Zhao sheng-Yao Liu Guo-Xin Ni School of Sport Medicine and Rehabilitation Beijing Sport UniversityBeijing 100084China Department of Acupuncture and Moxibustion Hubei University of Chinese MedicineWuhan 430065Hubei ProvinceChina Department of Spinal Surgery The Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhou 510260Guangdong ProvinceChina Department of Rehabilitation Medicine The First Affiliated Hospital of Xiamen UniversityXiamen 361003Fujian ProvinceChina

BACKGROUND Regular physical activity during childhood and adolescence is beneficial to bone development,as evidenced by the ability to increase bone density and peak bone mass by promoting bone *** To investigate the effects of exercise on bone formation in growing mice and to investigate the underlying *** 20 growing mice were randomly divided into two groups:Con group(control group,n=10)and Ex group(treadmill exercise group,n=10).Hematoxylin-eosin staining,immunohistochemistry,and micro-CT scanning were used to assess the bone formation-related indexes of the mouse *** analysis was used to find potential miRNAs targets of long non-coding RNA H19(lncRNA H19).RT-qPCR and Western Blot were used to confirm potential miRNA target genes of lncRNA H19 and the role of lncRNA H19 in promoting osteogenic *** Compared with the Con group,the expression of bone morphogenetic protein 2 was also significantly *** micro-CT results showed that 8 wk moderate-intensity treadmill exercise significantly increased bone mineral density,bone volume fraction,and the number of trabeculae,and decreased trabecular segregation in the femur of *** of lncRNA H19 significantly upregulated the expression of miR-149 and suppressed the expression of markers of osteogenic *** addition,knockdown of lncRNA H19 significantly downregulated the expression of autophagy markers,which is consistent with the results of autophagy-related protein changes detected in mouse femurs by *** Appropriate treadmill exercise can effectively stimulate bone formation and promote the increase of bone density and bone volume in growing mice,thus enhancing the peak bone mass of *** lncRNA H19/miR-149 axis plays an important regulatory role in osteogenic differentiation.

关键词： Exercise Osteogenic differentiation Bone formation Bone mesenchymal stem cells Autophagy

Self-assembly construction of NiCo LDH/ultrathin g-C_(3)N_(4) nanosheets photocatalyst for enhanced CO_(2) reduction and charge separation mechanism study

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Rare Metals 2022年第6期41卷 2118-2128页

作者： An-Qi Zhou Jin-Man Yang Xing-Wang Zhu Xiang-Lin Zhu Jin-yuan Liu Kang Zhong Han-Xiang Chen Jin-yu Chu Yan-sheng Du Yan-Hua Song Jun-Chao Qian Hua-Ming Li Hui Xu School of the Environment and Safety Engineering Institute for Energy ResearchJiangsu UniversityZhenjiang 212013China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Chemistry Biology and Materials EngineeringSuzhou University of Science and TechnologySuzhou 215009China

Graphite phase carbon nitride(g-C_(3)N_(4))is a promising catalyst for artificial photocatalytic carbon dioxide(CO_(2))***,the fast carrier recombination and the inadequacy of the CO_(2)reduction active site in g-C_(3)N_(4)block the escalation of the *** this work,NiCo layered double hydroxide(NiCo LDH)nanoflowers were self-assembled with ultrathin graphite phase carbon nitride(g-C_(3)N_(4))by an ultrasonic stirring strategy utilizing the Zeta potential *** formed NiCo LDH/ultrathin g-C_(3)N_(4)nanosheets(LDH-CN)photocatalysts own the merits of rich active sites and Z-scheme heterojunction,which lead to the enhanced CO_(2)reduction activity and *** highest yields of CO and CH_(4)were 114.24 and 26.48μmol·h^(-1)·g^(-1),which were much greater than those of g-C_(3)N_(4)and ***,the enhanced selectivity for CO confirmed the strong redox ability in the LDH-CN caused by the *** heterojunction-induced built-in electrical field can promote the separation and migration of photoinduced electrons and *** study provides a theoretical basis for designing high-performance photocatalysts.

关键词： g-C_(3)N_(4) Photocatalytic Layered double hydroxide CO_(2)photoreduction Z-scheme

MicroRNA-155 as a potential biomarker for breast cancer screening: a systematic review and meta-analysis

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TMR Cancer 2020年第5期3卷 187-198页

作者： yu-Rong Wang Xiao-Qian Hao Qian Xiang yu-sheng Liu Jie-Yan Wu College of traditional Chinese Medicine Jinan UniversityGuangzhou 510632China

Background:It is aimed to evaluate the clinical significance of miR-155 on diagnosing human breast ***:Eligible studies were identified through multiple search *** search was updated up until April 10,***’s nomogram,publication bias,meta-regression,sensitive analysis,area under the summary receiver operating characteristic(AUC),diagnostic odds ratio as well as pooled sensitivity and specificity were utilized to assess the capacity of miR-155 for *** meta-analysis was conducted and the origin of the heterogenic property was investigated by Stata SE 12.0 and Meta-Disc ***:The meta-analysis contained 9 articles totally with the AUC,diagnostic odds ratio,specificity,pooled sensitivity of 0.90(95%CI,0.88–0.93),28.63(95%CI,11.22–73.04),0.82(95%CI,0.72–0.89)and 0.86(95%CI,0.76–0.93)*** negative and positive likelihood ratios were 0.14 and ***,the heterogeneity was apparent but resulted from neither sensitivity analyses nor threshold ***:The evidence from this study indicates that miR-155 exhibits satisfactory performance on diagnosis for breast cancer.

关键词： Diagnosis MicroRNA-155 Biomarker Breast cancer

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有效亮度温度测量中发射率影响的修正

计量学报 2014年第6期35卷 578-582页

作者：原遵东邢波柏成玉傅承玉陈桂生中国计量科学研究院北京100029 湖北省计量测试技术研究院湖北武汉430223 中国测试技术研究院四川成都610021

经典的短波高温修正模型不适用于中长波红外温度计的发射率修正和不确定度评定。采用有效亮度温度概念，得到了对于温度范围和测温波长具有广泛适用性的发射率影响模型以及具有简明物理含义的微差近似形式，包含了经典亮度温度理论中的... 详细信息

经典的短波高温修正模型不适用于中长波红外温度计的发射率修正和不确定度评定。采用有效亮度温度概念，得到了对于温度范围和测温波长具有广泛适用性的发射率影响模型以及具有简明物理含义的微差近似形式，包含了经典亮度温度理论中的发射率影响修正和环境辐射误差修正。定量分析了经典的短波高温修正模型的误差。针对黑体辐射源的不同溯源方法，讨论了辐射温度计校准中的发射率影响修正方法，并给出修正实例。所用方法可用于辐射测温应用、辐射温度计校准和黑体辐射源校准中的发射率和环境影响修正以及辐射源发射率不确定度对校准结果不确定度贡献的计算。

关键词：计量学发射率修正有效亮度温度辐射温度计黑体辐射源校准不确定度

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现代温室环境多参数测控系统设计

微计算机信息 2008年第20期24卷 140-141,172页

作者：王毅白泽生延安大学信息学院陕西延安716000

介绍了对温室温度、湿度、光照、CO2浓度和土壤水分的检测与控制电路及原理图。这些电路既能独立使用,又能通过信息融合技术实现温室自动监控系统,提高了温室监控的自动化水平和应用的灵活性。

关键词：单片机温室温度光照度传感器

有机硼酸盐插层Zn/Al-LDH的红外和拉曼光谱特征

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光谱学与光谱分析 2013年第3期33卷 704-708页

作者：张婧宇白志民赵栋中国地质大学材料科学与工程学院北京100083

研究了碳酸根和硼酸根的二元锌铝水滑石的X射线衍射,拉曼和红外光谱特征。采用一步水热共沉淀法,分别制得结晶良好的层间为碳酸根和硼酸根的二元锌铝水滑石。X射线衍射分析显示,硼酸根插层后水滑石(003)特征衍射峰向小角度移动,峰型尖锐... 详细信息

研究了碳酸根和硼酸根的二元锌铝水滑石的X射线衍射,拉曼和红外光谱特征。采用一步水热共沉淀法,分别制得结晶良好的层间为碳酸根和硼酸根的二元锌铝水滑石。X射线衍射分析显示,硼酸根插层后水滑石(003)特征衍射峰向小角度移动,峰型尖锐,水滑石通道高度从0.28nm增加至0.42nm;红外光谱和拉曼光谱特征表明,硼酸根插层后,碳酸根的红外和拉曼特征峰消失。层间硼酸根以B3O3(OH)4-,B4O5(OH)24-和B(OH)4-三种形式存在。随层间离子的不同,与羟基相关的红外光谱和拉曼光谱峰位均有所改变。研究结果表明以硼酸三正丁酯为插层剂,可获得单一相、纯度较高的硼酸根型锌铝水滑石,拉曼光谱可准确探测水滑石层间阴离子变化对其结构和性能的影响。

关键词：水滑石拉曼光谱红外光谱有机硼酸盐

Studies on Silicon-Containing Fragrance Raw Materials(Ⅳ)——Synthesis of Spiro-Acetals of 5-Trimethylsilylcyclohex-2-(or 3)enone

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Chemical Research in Chinese Universities 1993年第2期9卷 127-132页

作者： TANG Shi-xiong XUE Jie-you DUAN Mao-sheng CAO yu-rong ZHI Jing-fang WANG Xiao-lan Department of Chemistry Nankai UniversityTianjin300071

Some novel spiro-acetals of 5-trimethylsilylcyclohex-2(or 3)-enone were synthesized from the reaction of silylcyclohexenones with the corresponding a, ω-diols in the presence of oxalic acid or adipic acid.

关键词： Synthesis 5-trimethylsilylcyclohex-2(or 3)-enone Spiro-acetal