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Stability analysis of free surface of soil between piles in fabricated recyclable foundation pit supporting structure

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Yantu Lixue/Rock and Soil Mechanics 2020年 41卷 299-305页

作者： Chen, Li-Chao lin, pei-Yuan Guo, Cheng-Chao Wang, Fu-Ming School of Civil Engineering Sun Yat-sen University Guangzhou510275 China Zhuhai519080 China Guangdong Provincial Key Laboratory of Oceanic Civil Engineering Sun Yat-sen University Guangzhou510275 China Guangdong Provincial Research Center for Underground Space Exploitation Technology Guangzhou510275 China

The stability of the free surface of the soil between the piles is of great significance for the engineering application of the assembled recyclable foundation pit support structure. In this paper, based on the calculation model of wedge-shaped body and the Terzaghi's theory on loosening earth pressure, considering the interaction between the soil and the pile-slab, the calculation formula of the ultimate supporting pressure of the free surface of the soil between the piles is derived from the limit equilibrium condition of the sliding mass. The calculated ultimate supporting pressure is compared with the numerical simulation results of three-dimensional finite element limit analysis to verify the rationality of the calculation method. The simple variable method was used to analyze the effects of soil internal friction angle φ, interface friction angle between soil and plates/piles δ, ground overload P0, spacing between piles B, relative excavation depth H/D, and unloading arch angle β on the ultimate support pressure. The research results can provide a theoretical basis for the soil support between the piles in the pile-slab support structure. © 2020, Science Press. All right reserved.

关键词： Piles

Advances in Urban Meteorological Research in China

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Journal of Meteorological Research 2020年第2期34卷 218-242页

作者： Shiguang MIAO Weimei JIANG Ping LIANG Hongnian LIU Xuemei WANG Jianguo TAN Ning ZHANG Ju LI Wupeng DU lin pei Institute of Urban Meteorology China Meteorological Administration(CMA)Beijing 100089 School of Atmospheric Sciences Nanjing UniversityNanjing 210032 Shanghai Climate Center/CMA Key Laboratory for City Mitigation and Adaptation to Climate Change Shanghai 200030 Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation for Environmental Quality Institute for Environmental and Climate ResearchJinan UniversityGuangzhou 510632 Beijing Climate Center Beijing 100089

Over the past decades,a large number of studies have been carried out in the field of urban meteorology in *** paper summarizes the main progress in urban meteorology research from four aspects:urban meteorological observation network and field campaign,multi-scale model of urban meteorology,interaction between urban meteorology and atmospheric environment,and the impacts of urbanization on weather and *** advances are as ***’s major cities have established or are improving comprehensive urban meteorological observation networks characterized by multi-platform,multi-variable,multi-scale,multi-link,and ***,Nanjing,Shanghai,and other cities carried out urban meteorological field campaigns,which were included in the WMO research demonstration *** tunnel experiments and scale-model outdoor experiments were successfully ***-scale urban meteorological and air quality prediction numerical model systems have been developed and put into operational *** urban heat island effect;urban impacts on precipitation,regional climate,and air quality;urban planning;and interaction between urban meteorology and atmospheric environment are extensively ***,efforts to improve observational technology,data assimilation,and urban system modeling,to explore the impacts of urbanization on environment and human health,and to provide integrated urban hydro-meteorological climate and environmental services are planned ahead.

关键词： urbanization urban meteorology observation network field campaign multi-scale numerical modeling atmospheric environment

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Male nutritional status does not impact the reproductive potential of female Cnaphalocrocis medinalis moths under conditions of nutrient shortage

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Insect Science 2022年第2期29卷 467-477页

作者： Jia-Wen Guo Yu Cui pei-Jiong lin Bao-Ping Zhai Zhong-Xian Lu Jason W.Chapman Gao Hu State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products Institute of Plant Protection and MicrobiologyZhejiang Academy of Agricultural SciencesHangzhou310021 China Department of Entomology College of Plant ProtectionNanjing Agricultural UniversityNanjing210095 China Centre for Ecology and Conservation and Environment and Sustainability InstituteUniversity of ExeterCornwallPenrynTR109FE UK

In addition to sperm,some accessory substances transferred to females during copulation act as nuptial gifts by passing on valuable nutrients in many insect *** nutritional status of the males can thus have a great effect on the mating behavior,fecundity and even the longevity of ***,little is known about the effect of male nutritional status on the female reproductive traits in migratory insect species,particularly when females experience nutrient shortage and have to choose between reproduction and ***,Cnaphalocrocis medinalis,a migratory rice pest in Asia,was studied to explore this *** results showed that in male moths fed with honey solution,their gonads had higher energy content than gonads of starved males,resulting in increased energy content of the bursa copulatrix of females after mating with fed *** females showed increased mating frequency,fecundity and longevity compared to females mating with starved males,indicating that male moths deliver nuptial gifts to females and improve their reproductive ***,when females were starved,only about 45%mated,with just a single copulation,regardless of male nutritional *** females showed lower fecundity,and a longer pre-oviposition period(indicating a greater propensity to migrate),compared to fed ***,copulation still significantly extended their *** results suggest that starved females invest in migration to escape deteriorating habitats,rather than investing the nuptial gift to increased *** results further our understanding of the reproductive adaptability of migratory insects under conditions of food stress.

关键词： bursa copulatrix Cnaphalocrocis medinalis insect migration nuptial gifts spermatophore

On-chip integrated GeSe_(2)/Si vdW heterojunction for ultravioletenhanced broadband photodetection,imaging,and secure optical communication

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Nano Research 2024年第7期17卷 6544-6549页

作者： Zhiman Zhou Kunxuan Liu Di Wu Yunrui Jiang Ranran Zhuo pei lin Zhifeng Shi Yongtao Tian Wei Han Longhui Zeng Xinjian Li School of Physics and Microelectronics Key Laboratory of Material Physics Ministry of EducationZhengzhou UniversityZhengzhou 450052China Department of Electrical and Computer Engineering University of California San DiegoLa JollaCalifornia 92093USA Institute of Microelectronics and Integrated Circuits School of MicroelectronicsHubei UniversityWuhan 430062China

Broadband photodetection,spanning from ultraviolet(UV)to infrared(IR),is pivotal in diverse technological domains including astronomy,remote sensing,environmental monitoring,and medical ***,current commercially available broadband photodetectors,predominately based on conventional narrow-bandgap semiconductors,exhibit limited sensitivity in the UV *** limitation,stemming from the significant energy disparity between the semiconductor bandgap and UV photon,narrows their application ***,we report an innovative approach involving the in-situ van der Waals(vdW)integration of two-dimensional(2D)GeSe_(2)layers onto a Si *** process yields a high-quality GeSe_(2)/Si vdW heterojunction device,which features a broad response range covering from UV to near-IR(NIR)with a greatly-enhanced sensitivity in the UV *** device possesses high responsivities of 325 and 533.4 mA/W,large detectivities of 1.24×10^(13)and 2.57×10^(13)Jones,and fast response speeds of 20.6/82.1 and 17.7/81.0μs under 360 and 980 nm,***,the broadband image sensing and secure invisible optical communication capabilities of the GeSe_(2)/Si heterojunction device are *** work provides a viable approach for UV-enhanced broadband photodetection technology,opening up new possibilities and applications across various scientific and technological domains.

关键词： germanium diselenide van der Waals(vdW)integration ultraviolet enhanced broadband photodetection imaging

Light trapping enhanced broadband photodetection and imaging based on MoSe_(2)/pyramid Si vdW heterojunction

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Nano Research 2023年第7期16卷 10552-10558页

作者： Shaoqin Pan Shuo-En Wu Jinjin Hei Zhiwen Zhou Longhui Zeng Yakun Xing pei lin Zhifeng Shi Yongtao Tian Xinjian Li Di Wu School of Physics and Microelectronics Key Laboratory of Material PhysicsZhengzhou UniversityZhengzhou 450052China Department of Electrical and Computer Engineering University of California San DiegoLa JollaCA 92093USA Department of Electronic Engineering Chinese University of Hong KongHong Kong 999077China

Two-dimensional(2D)layered materials have been considered promising candidates for next-generation ***,the performance of 2D photodetectors still has much room for improvement due to weak light absorption of planar 2D materials and lack of high-quality heterojunction preparation ***,2D materials integrating with mature bulk semiconductors are a promising pathway to overcome this limitation and promote the practical application on *** this work,we present the patterned assembly of MoSe_(2)/pyramid Si mixed-dimensional van der Waals(vdW)heterojunction arrays for broadband photodetection and *** from the light trapping effect induced enhanced optical absorption and high-quality vdW heterojunction,the photodetector demonstrates a wide spectral response range from 265 to 1550 nm,large responsivity up to 0.67 A·W^(-1),high specific detectivity of 1.84×10^(13)Jones,and ultrafast response time of 0.34/5.6μs at 0 ***,the photodetector array exhibits outstanding broadband image sensing *** study offers a novel development route for high-performance and broadband photodetector array by MoSe_(2)/pyramid Si mixed-dimensional heterojunction.

关键词： two-dimensional(2D)MoSe_(2)layers light trapping van der Waals(vdW)heterojunction broadband photodetector selfpowered imaging

Hypnotherapy for overweight and obese patients:A narrative review

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Journal of Integrative Medicine 2021年第1期19卷 1-5页

作者： Nurul Afiedia Roslim Aryati Ahmad Mardiana M ansor Myat Moe Thwe Aungc Farrahdilla Hamzah Haszalina Hassan pei lin Lua Faculty of Pharmacy Universiti Sultan Zainal Abidin(UniSZA)Kampus Besut22200 BesutTerengganuMalaysia Faculty of Health Science Universiti Sultan Zainal Abidin(UniSZA)Kampus Gong Badak21300 Kuala NerusTerengganuMalaysia Faculty of Medicine Universiti Sultan Zainal Abidin(UniSZA)Kampus Kota20400 Kuala TerengganuTerengganuMalaysia

Obesity and overweight problems are serious global health issues today and despite many efforts,the prevalence has continued to rise for ***,hypnotherapy has been gaining recognition as an effective treatment for obesity and overweight *** review compiles contemporary scientific research on the effectiveness of hypnotherapy for weight ***,Pub Med and EBSCO Host databases were applied in the *** search identified 119 articles,of which seven met the inclusion criteria.A total of 539 respondents(82.7%women and 17.3%men)between the ages of 17 and 67 years were represented in the seven *** studies incorporated lifestyle changes,such as changes of dietary habit and behavioral recommendations in the hypnotic *** results suggested that the use of hypnotherapy not only promoted weight reduction during the treatment period but also after treatment cessation,and in some cases,one to ten kilograms were lost during follow-up *** addition,one study even showed increased physical activity among the hypnotised *** use of hypnotherapy also improved respondents'eating behavior and quality of ***,a definitive conclusion could not be drawn due to several methodological flaws and the limited number of published studies in this ***,further well-designed studies are needed to substantiate the effectiveness of hypnotherapy for this modern-day health problem.

关键词： Hypnotherapy Mind-body interventions Obesity Overweight

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血清sd-LDL-C与2型糖尿病患者冠状动脉病变严重程度和心血管事件发生风险的相关性

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检验医学 2025年第1期40卷 66-72页

作者：张爱民殷悦秦莉张娜王春燕贾玫裴林北京大学人民医院检验科北京100044

目的探讨血清小而密低密度脂蛋白胆固醇(sd-LDL-C)与2型糖尿病(T2DM)患者冠状动脉病变严重程度和发生心血管事件风险的相关性。方法选取2016年1月—2019年3月北京大学人民医院汉族T2DM患者3315例。收集所有患者的一般资料,并检测空腹血... 详细信息

目的探讨血清小而密低密度脂蛋白胆固醇(sd-LDL-C)与2型糖尿病(T2DM)患者冠状动脉病变严重程度和发生心血管事件风险的相关性。方法选取2016年1月—2019年3月北京大学人民医院汉族T2DM患者3315例。收集所有患者的一般资料,并检测空腹血糖(FBG)、同型半胱氨酸(Hcy)、高敏C反应蛋白(hs-CRP)、总胆固醇(TC)、三酰甘油(TG)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)、载脂蛋白A1(apo A1)、载脂蛋白B(apo B)、脂蛋白(a)[Lp(a)]、sd-LDL-C和糖化血红蛋白(HbA1c)。根据冠状动脉造影(CAG)结果将所有患者分为冠心病(CHD)组(T2DM合并CHD,1998例)和非CHD组(T2DM未合并CHD,1317例)。根据Gensini评分[≤25分(低)、26~40分(中)、≥41分(高)]和CAG结果(1支、2支、3支病变)将T2DM合并CHD患者分别分组。对所有患者随访5年,记录主要不良心血管事件(MACE)。采用二元Logistic回归分析评估sd-LDL-C与CHD发生风险和冠状动脉病变严重程度的关系。采用Kaplan-Meier生存曲线分析MACE的发生情况。结果与非CHD组比较,CHD组apo B、LDL-C、hs-CRP、Hcy和sd-LDL-C水平显著升高(P0.95 mmol·L^(-1)的患者发生CHD的风险是sd-LDL-C1.07mmol·L^(-1)的患者发生3支病变、高Gensini评分的风险分别是sd-LDL-C0.74 mmol·L^(-1))组MACE发生率(15.36%)高于低sd-LDL-C组(11.24%)(P=0.001)。结论T2DM患者血清sd-LDL-C水平与CHD的发生和冠状动脉病变严重程度显著相关,且血清sd-LDL-C水平较高的患者未来发生MACE的风险也会增高。sdLDL-C或可作为评估T2DM患者CHD发生风险和冠状动脉病变严重程度,以及预测MACE发生的生物标志物。

关键词：小而低密度脂蛋白胆固醇冠心病 2型糖尿病冠状动脉病变

Sun Yinggang, Shenwen shidai： Chenwei, shushu yu zhonggu zhengzhi yanjiu （The Weft Prophecy Texts and Political Legitimation in Medieval China）

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Frontiers of History in China 2015年第4期10卷 700-703页

作者： pei-Ying lin University of California Berkeley

Prophecy implies a relationship between humans and heaven, and a belief in the influence of the natural world on human affairs, that fell severely out of fashion as science-oriented rationalism became dominant in our modem world. Prophecy＇s relation with political discourse in medieval China, however, has recently attracted a great amount of scholarly interest.

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“The Trial by Existence”: Frost’s Early View on the Soul

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Journal of Literature and Art Studies 2020年第7期10卷 629-632页

作者： CAI pei-lin Southwest University Chongqing400715China

This essay explores Frost early philosophical view on the soul in“The Trial by Existence”.This poem combines Plato’s The Myth of Er in Republic Book X with the story of the Incarnation in Milton’s Paradise Lost,manifesting that firstly,one’s soul symbolically shares the divine character;secondly,the destiny of one’s soul is chosen by oneself;thirdly,soul and body are inextricable,which means that the material world or the body is the trial of soul’s *** greatest merit of the soul is“plunging into matter”and risking it in substantiation while maintains its completeness.

关键词： Frost “The Trial by Existence” soul life