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A study of the temporal and spatial variations in the suitability of the environment in Chinese cities for tourism and in strategies for optimizing the environment

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International Journal of Digital Earth 2022年第1期15卷 527-552页

作者： Ying Li Shuhui Zhang jingting han Yi Zhao Quan han Liyun Wu Xin Wang Ziyi Qiu Tongqian Zou Cheng Fan China Academy of Culture and Tourism Beijing International Studies UniversityBeijingPeople’s Republic of China State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of ScienceBeijingPeople’s Republic of China Beijing Boneng Technology Co. LtdBeijingPeople’s Republic of China Beijing Qinxing International Cultural Exchange Center BeijingPeople’s Republic of China State Environment Protection Key Laboratory of Satellite Remote Sensing Aerospace Information Research InstituteChinese Academy of SciencesBeijingPeople’s Republic of China

With the aim of guaranteeing the interests and health of tourists,this study comprehensively evaluates the suitability of the environment in different cities in China for tourism by considering the impacts of climate,vegetation and environmental factors on *** Universal Thermal Climate Index(UTCI),total precipitation(PREC),Vegetation Leaf Area Index(LAI),concentration of particulate matter with a diameter of less than 2.5μm(PM2.5),and the downward UV radiation at the surface(UVB)are used as *** addition,the Delphi–AHP–TOPSIS algorithm is introduced and is used for the comprehensive evaluation of the environmental suitability of 684 cities in China for tourism in *** is found that Chinese cities vary greatly in terms of the suitability of their environments for *** the factors that affect the environmental suitability,the LAI is important,with an increase in the LAI generally being *** contrast,an increase in the PM2.5 concentration is a key factor that limits the environmental suitability of an ***,urban landscaping and control of the atmospheric quality are essential and effective ways of improving the suitability of the environment of cities in China for tourists.

关键词： Suitability of tourist environment UTCI Delphi–AHP–TOPSIS decision support

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Evolution of Landscape Pattern and Tourism Service Value in Zhangjiakou City

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Journal of Resources and Ecology 2022年第6期13卷 1098-1108页

作者： LI Ying DAI Yuexingtong han jingting ZOU Tongqian China Academy of Culture and Tourism Beijing International Studies UniversityBeijing 100024China State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of ScienceBeijing 100101China Management and Science University Shah Alam 40100Malaysia

Zhangjiakou is a northern Chinese city that hosted the Beijing 2022 Winter Olympic Games. As an important ice and snow tourist destination, it is essential to investigate Zhangjiakou’s rate of landscape pattern change,the landscape ecological security level, and ecosystem service value, particularly the tourism ecological service value during its construction. With land use data from 2000 to 2020, this study comprehensively analyzed the dynamic changes in Zhangjiakou, including land use dynamics, the land use transfer matrix, landscape vulnerability,landscape disturbance, ecosystem service value, tourism ecological service value, and other aspects. The results show that the landscape pattern in Zhangjiakou was greatly disturbed from 2015 to 2018, and the landscape ecological security was threatened in the process of landscape pattern adjustment. By 2020, after the landscape pattern was adjusted and stabilized, the landscape ecological security was restored, and the ecosystem service value was significantly improved, especially the tourism ecological service value. The results of this study will play an important role in promoting the optimization of Zhangjiakou’s ice and snow landscape pattern and the improvement of tourism ecological value. In addition, it provides important lessons for the development of other ice and snow tourist destinations.

关键词： ice and snow tourist destination landscape pattern landscape ecological security tourism leisure value Zhangjiakou City

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周庄烟雨中(外一章)

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城乡建设 2004年第5期 65-67页

作者：韩静霆空军文艺制作室

一走上周庄湿漉漉的石板路.我就在水中央了。眉发是湿的.衣襟也是湿的。天气正是烟雨空朦。前边是水.后边是水.左左右右都是水.周庄偎在淀山湖、白岘湖、南湖.澄湖的怀里.模样儿像荷叶。“荷叶”上细细密密弯弯曲曲的“叶脉”呢.都是... 详细信息

一走上周庄湿漉漉的石板路.我就在水中央了。眉发是湿的.衣襟也是湿的。天气正是烟雨空朦。前边是水.后边是水.左左右右都是水.周庄偎在淀山湖、白岘湖、南湖.澄湖的怀里.模样儿像荷叶。“荷叶”上细细密密弯弯曲曲的“叶脉”呢.都是河汊。一踩上周庄的乌篷船,就到了水乡人家了。

关键词：周庄迷楼沧桑变化人家禅境石笋流流瑶琳洞瑶琳仙境诗人

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石墨烯/四氧化三钴电化学传感器的建立及饼干中香兰素检测分析

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食品工业科技 2021年第8期42卷 221-226页

作者：司晓晶韩婧婷朱文菁黄玥白晨马颖清上海商学院食品系上海200235 上海市农产品质量安全中心上海201708

本文将石墨烯(GR)滴涂在玻碳电极(GCE)后,再通过循环伏安法电聚合氧化Co(COOH)2制得Co3O4/GR/GCE修饰电极作为食品中检测香兰素的新型电化学传感器。通过扫描电镜技术对Co3O4/GR复合纳米材料进行了表征并优化了实验条件。结果表明,当1 m... 详细信息

本文将石墨烯(GR)滴涂在玻碳电极(GCE)后,再通过循环伏安法电聚合氧化Co(COOH)2制得Co3O4/GR/GCE修饰电极作为食品中检测香兰素的新型电化学传感器。通过扫描电镜技术对Co3O4/GR复合纳米材料进行了表征并优化了实验条件。结果表明,当1 mg/mL GR滴涂量为8μL,Co(COOH)2聚合圈数为20圈,0.1 mol/L pH 4.5磷酸缓冲溶液中,香兰素在该传感器下线性关系良好(0.1~80μmol/L),线性方程为:Ip(μmol/L)=0.1518C+0.5103(R2=0.997),检测限为0.033μmol/L(S/N=3)。将此方法应用于饼干样品中香兰素检测,回收率良好,相对标准偏差仅1.47%。综上,该电化学传感器灵敏度较高、稳定性良好,在实际样品检测中具有可行性,拥有广阔的应用前景。

关键词：香兰素石墨烯四氧化三钴电化学传感器

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Recent advances in exploring new blood-based biomarkers for the early diagnosis of gastric cancer

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Science China Chemistry 2025年第1期68卷 35-45页

作者： Xinyu Peng Qian Ma Da han School of Life Science Shanghai University Institute of Molecular Medicine Shanghai Key Laboratory for Nucleic Acid Chemistry and Nanomedicine State Key Laboratory of Oncogenes and Related Genes Renji Hospital School of Medicine Shanghai Jiao Tong University Department of Research and Development Intellinosis Biotechnologies Co.Ltd.

Gastric cancer(GC) is a prevalent and lethal malignancy worldwide, and the 5-year survival rate is less than 30%. The absence of distinctive symptoms often leads to late-stage diagnosis, contributing to a grim prognosis. Early detection is pivotal for improving the survival rates and outcomes of GC patients. Traditional diagnostic methods, including gastroscopy and histopathological examination, are restricted in the early diagnosis of GC. Conventional protein biomarkers, such as carcinoembryonic antigen(CEA), carbohydrate antigen 19-9(CA19-9), and carbohydrate antigen 72-4(CA72-4), exhibit insufficient sensitivity and specificity for GC screening, which diminishes their clinical value. Recently, novel circulating biomarkers, such as circulating tumor cells(CTCs), circulating tumor cell DNA(ct DNA), and circulating free RNA(cf RNA), have emerged as promising candidates in the burgeoning field of liquid biopsy due to their superior sensitivity and specificity. This review focuses on the latest research on blood-based biomarkers for GC diagnosis and examines the clinical potentials and challenges associated with these emerging biomarkers.

关键词： gastric cancer early diagnosis blood

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Secure beamforming and deployment design for rate-splitting multiple access-based UAV communications

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Science China(Information Sciences) 2025年第1期68卷 342-356页

作者： Bing WANG Xiaofeng TAO Shujun han Huici WU Kai YANG Zhu han National Engineering Research Center of Mobile Network Technologies Beijing University of Posts and Telecommunications Peng Cheng Laboratory Department of Electrical and Computer Engineering University of Houston

Rate-splitting multiple access(RSMA) has recently gained attention as a potential robust multiple access(MA)scheme for upcoming wireless networks. Given its ability to efficiently utilize wireless resources and design interference management strategies, it can be applied to unmanned aerial vehicle(UAV) networks to provide convenient services for large-scale access ground users. However, due to the line-of-sight(LoS) broadcast nature of UAV transmission, information is susceptible to eavesdropping in RSMA-based UAV networks. Moreover, the superposition of signals at the receiver in such networks becomes complicated. To cope with the challenge, we propose a two-user multi-input single-output(MISO) RSMA-based UAV secure transmission framework in downlink communication networks. In a passive eavesdropping scenario, our goal is to maximize the sum secrecy rate by optimizing the transmit beamforming and deployment location of the UAV-base station(UAV-BS),while considering quality-of-service(QoS) constraints, maximum transmit power, and flight space limitations. To address the non-convexity of the proposed problem, the optimization problem is first decoupled into two subproblems. Then, the successive convex approximation(SCA) method is employed to solve each subproblem using different propositions. In addition, an alternating optimization(AO)-based location RSMA(L-RSMA) beamforming algorithm is developed to implement joint optimization to obtain the suboptimal solution. Numerical results demonstrate that(1) the proposed L-RSMA scheme yields a28.97% higher sum secrecy rate than the baseline L-space division multiple access(SDMA) scheme;(2) the proposed L-RSMA scheme improves the security performance by 42.61% compared to the L-non-orthogonal multiple access(NOMA) scheme.

关键词： rate-splitting multiple access UAV communication precoding optimization deployment location physical layer security

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粒细胞集落刺激因子和促红细胞生成素单药或联合用药治疗多发性硬化的临床效果分析

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中国医科大学学报 2019年第10期48卷 919-925页

作者：黄琴谢宁罗纳川韩静霆徐文苑南昌大学第一附属医院神经内科南昌330006 南昌大学第一临床医学院2017级临床医学专业南昌330031

目的探讨粒细胞集落刺激因子(G-csf)和促红细胞生成素(EPO)单药或联合用药治疗多发性硬化(MS)的临床效果。方法将60例MS患者分为G-csf组、EPO组、G-csf+EPO组(联合治疗组)及对照组(每组15例)。前3组在对照组甲基强的松龙治疗的基础上分... 详细信息

目的探讨粒细胞集落刺激因子(G-csf)和促红细胞生成素(EPO)单药或联合用药治疗多发性硬化(MS)的临床效果。方法将60例MS患者分为G-csf组、EPO组、G-csf+EPO组(联合治疗组)及对照组(每组15例)。前3组在对照组甲基强的松龙治疗的基础上分别加入G-csf、EPO及G-csf联合EPO,在治疗期间(治疗前及治疗7、14、28 d)及随访期间(治疗后3、6、12、24个月)对患者的EDSS评分、磁共振T2WI及增强序列病灶数目进行评估。结果在降低EDSS评分及磁共振T2WI病灶数目方面,治疗期间各组组内降低程度均有统计学差异(P0.05)。各组治疗期间磁共振增强序列病灶均减少,随访期间治疗组与对照组比较有统计学差异(P0.05)。结论G-csf及EPO单药或联合用药治疗MS安全有效,二者有联合效应。

关键词：粒细胞集落刺激因子促红细胞生成素多发性硬化

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替罗非班治疗不同部位进展性脑梗死的临床研究

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中国医学创新 2024年第23期21卷 57-60页

作者：章子骏付杰韩静霆上饶市人民医院神经内科江西上饶334000

目的:探究替罗非班治疗不同部位进展性脑梗死(PIS)的临床效果。方法:选取97例2023年1月—2024年1月上饶市人民医院收治的PIS患者,根据梗死部位不同将其分为前循环组(n=47)、后循环组(n=50)。两组均给予基础治疗+替罗非班治疗。比较两组... 详细信息

目的:探究替罗非班治疗不同部位进展性脑梗死(PIS)的临床效果。方法:选取97例2023年1月—2024年1月上饶市人民医院收治的PIS患者,根据梗死部位不同将其分为前循环组(n=47)、后循环组(n=50)。两组均给予基础治疗+替罗非班治疗。比较两组血小板参数、神经功能缺损程度、临床疗效及不良事件发生情况。结果:治疗1周后,两组血小板体积分布宽度(PDW)、平均血小板体积(MPV)均减小,血小板计数(PLT)均上升,后循环组PDW和MPV均小于前循环组,PLT高于前循环组,差异均有统计学意义(P0.05);治疗2 d、1周后,后循环组NIHSS评分均低于前循环组,差异均有统计学意义(P0.05)。结论:替罗非班治疗PIS效果确切,可有效改善患者血小板参数和神经功能,其对后循环梗死患者的病情改善更显著,且安全性较高。

关键词：前循环梗死后循环梗死进展性脑梗死替罗非班血小板参数神经功能缺损

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Improvement of Cold Recycled Mixture Performance Based on Improved Density Test Method and RAP Characteristics

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 79-87页

作者： han Zhanchuang PANG Yafeng LIN Hongwei China First Highway Engineering Group Co. LtdBeijing 100024China The Key Laboratory of Road and Traffic Engineering Ministry of EducationTongji UniversityShanghai 201804China Guangzhou Baiyun International Airport Co. Ltd.Guangzhou 510470China

The available test methods for optimal moisture content of cold recycled mixture(CRM)as well as its bulk specific gravity,and theoretical maximum relative density were analyzed in this *** test improvements were suggested to improve test control of the CRM road performance based on the discovered ***,the properties of reclaimed asphalt pavement(RAP),including the content of old asphalt,penetration index,passing rate of 4.75 mm sieve,and gradation change rate after extraction,were *** effects of RAP characteristics on splitting tensile strength,water stability,the high-and low-temperature performance of emulsified asphalt CRM were *** results show that the optimum moisture content of CRM should be determined when the compaction work matches the specimen’s molding *** the analyzed methods of bulk specific gravity assessment,the dry-surface and CoreLok methods provide more robust and accurate results than the wax-sealing method,while the dry-surface method is the most *** modified theoretical maximum relative density test method is proposed,which can reduce the systematic error of the vacuum test *** following RAP-CRM trends can be *** lower the content of old asphalt and the smaller the change rate of gradation,the smaller the voids and the better the water stability of *** greater the penetration of old asphalt,the higher the fracture work and low-temperature splitting *** greater the penetration,the higher the passing rate of 4.75 mm sieve after extraction,and the worse the high-temperature performance of CRM.

关键词： RAP volume parameters high-temperature performance low-temperature performance water stability

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Crystallization Modulation and Holistic Passivation Enables Efficient Two‑Terminal Perovskite/CuIn(Ga)Se_(2)Tandem Solar Cells

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Nano-Micro Letters 2025年第1期17卷 205-215页

作者： Cong Geng Kuanxiang Zhang Changhua Wang Chung Hsien Wu Jiwen Jiang Fei Long Liyuan han Qifeng han Yi‑Bing Cheng Yong Peng State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070People’s Republic of China Triumph Photovoltaic Materials Co. Ltd.No.1001 Yannan AvenueHigh‑Tech Development DistrictBengbuAnhui 233000People’s Republic of China College of Materials Science and Engineering Guilin University of TechnologyGuilin 541004People’s Republic of China State Key Laboratory of Metal Matrix Composites Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China

Two-terminal(2-T)perovskite(PVK)/CuIn(Ga)Se_(2)(CIGS)tandem solar cells(TSCs)have been considered as an ideal tandem cell because of their best bandgap matching regarding to Shockley–Queisser(S–Q)***,the nature of the irregular rough morphology of commercial CIGS prevents people from improving tandem device *** this paper,D-homoserine lactone hydrochloride is proven to improve coverage of PVK materials on irregular rough CIGS surfaces and also passivate bulk defects by modulating the growth of PVK *** addition,the minority carriers near the PVK/C60 interface and the incompletely passivated trap states caused interface recombination.A surface reconstruction with 2-thiopheneethylammonium iodide and N,N-dimethylformamide assisted passivates the defect sites located at the surface and grain ***,LiF is used to create this field effect,repelling hole carriers away from the PVK and C60 interface and thus reducing *** a result,a 2-T PVK/CIGS tandem yielded a power conversion efficiency of 24.6%(0.16 cm^(2)),one of the highest results for 2-T PVK/CIGS TSCs to our *** validation underscores the potential of our methodology in achieving superior performance in PVK/CIGS tandem solar cells.

关键词： PVK/CIGS TSCs Irregular rough surfaces Modulating the growth PVK/C60 interface recombination

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