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Construction of daily precipitation series and the observational characteristics of extreme precipitation in Tianjin,China during 1888-2022

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Advances in Climate Change Research 2024年第1期15卷 52-61页

作者： Peng SI Qing-Xiang LI xiao-yang chen Min WANG Chuan-Jun LUO Tianjin Meteorological Information Center Tianjin Meteorological BureauTianjin 300074China Research Centerfor Ecology and Environment of Central Asia Chinese Academy of SciencesWulumuqi 830011China School of Atmospheric Sciences Sun Yat-sen UniversityZhuhai 528478China Key Laboratory of Tropical Amosphere-Ocean System Ministry of EducationZhuhai 528478China Shaoguan Meteorological Service Shaoguan 512028China

Given the difficulties in rescuing and ensuring the quality of long-term climate data,current studies on century-scale climate change are usually limited to annual and monthly data,resulting in the poor detection of extreme climate events and their changes before *** this study,we reconstructed a daily precipitation series for Tianjin from 15 September 1887 to 31 December 2022 on the basis of the most comprehensive daily precipitation records collected from the Tianjin Meteorological Archive,China,and in reference to the precipitation analysis results based on the datasets developed by the Climatic Research Unit Time-Series version 4.06,Global Precipitation Climatology Centre and University of Delaware along with the application of various homogenisation methods for climate *** approach provides a complete and reliable century-long daily precipitation series for the study of regional or local extreme weather and climate *** reconstructed daily dataset reveals that the annual precipitation amount and R95 intensity in Tianjin during 1888-2022 lack significant trends and have values of 0.74±6.99 and-1.84±3.22 mm per decade,*** the annual and seasonal scales,the precipitation amount and R95 intensity,particularly those in autumn,have increased since the latter half of the 20th century relative to those in ***,the increase in precipitation amount and R95 intensity is relatively limited compared with that in atmospheric water vapour content due to surface warming,indicating the highly sensitive response of extreme precipitation events to *** addition,the estimates for the return periods of 5,10,20,50 and 100 years covering 1888-2022,1888-1950 and 1951-2022 depict that the intensity of heavy rain and above magnitude was highest in 1888-1950 and decreased in 1951-2022.

关键词： Over a century-long timescale Daily precipitation series Extreme precipitation Return period

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开角型青光眼合并白内障患者术中麻醉方式对患者麻醉效果及苏醒质量的影响

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四川生理科学杂志 2024年第5期46卷 1138-1140页

作者：肖晨阳郑州市第二人民医院麻醉科河南郑州450000

目的:探讨开角型青光眼合并白内障患者术中麻醉方式对麻醉效果及苏醒质量的影响。方法:选取2021年1月至2022年12月本院收治的86例开角型青光眼合并白内障患者作为研究对象,依据随机数字表法分为对照组和观察组,各43例。两组均进行白内... 详细信息

目的:探讨开角型青光眼合并白内障患者术中麻醉方式对麻醉效果及苏醒质量的影响。方法:选取2021年1月至2022年12月本院收治的86例开角型青光眼合并白内障患者作为研究对象,依据随机数字表法分为对照组和观察组,各43例。两组均进行白内障超声乳化术、人工晶体植入联合小梁切除术治疗。对照组采用喉罩全麻,观察组采用球后神经阻滞麻醉联合全身麻醉。分析比较两组的麻醉效果、疼痛程度及苏醒质量。结果:两组的麻醉优良率无明显差异(P>0.05)。观察组术后不同时点的视觉模拟评分法(Visual analogue scale,VAS)评分均明显低于对照组(P<0.05)。观察组的呼吸恢复、呼之睁眼、定向力恢复、苏醒时间均明显短于对照组(P<0.05)。结论:开角型青光眼合并白内障患者术中采用球后神经阻滞麻醉联合全身麻醉与喉罩全麻麻醉效果相当,但球后神经阻滞麻醉联合全身麻醉在术后疼痛程度、苏醒质量方面效果更佳。

关键词：开角型青光眼白内障喉罩全麻球后神经阻滞苏醒质量

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Hygrothermal effect on high-velocity impact resistance of woven composites

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Defence Technology（防务技术） 2022年第5期18卷 823-833页

作者： xiao-chen yang Nan Jia School of Urban Construction Eastern Liaoning UniversityWenhua 325Dandong118003China College of Safety Science and Engineering Liaoning Technical UniversityFuxin123000China China Coal Technology&Engineering Group Shenyang Research Institute Fushun113122China State Key Laboratory of Coal Mine Safety Technology Fushun113122China

The woven glass fiber reinforced composites(GFRP)subjected to high-speed impact is investigated to identify the hygrothermal aging effect on the impact *** the hygrothermal aged and unaged glass/epoxy laminates are subjected to different impact velocities,which is confirmed as a sensitive factor for the failure modes and *** results show the hygrothermal aging effect decreases the ballistic limit by 14.9%,but the influence on ballistic performance is limited within the impact velocity closed to the ballistic *** failure modes and energy dissipation mechanisms are confirmed to be slightly influenced by the hygrothermal aging *** hygrothermal aging effect induced localization of structural deformation and degradation of mechanical properties are the main reasons for the composite undergoing the same failure modes at smaller impact *** on the energy absorption mechanisms,analytical expressions predict the ballistic limit and energy absorption to reasonable accuracy,the underestimated total energy absorption results in a relatively poor agreement between the measured and predicted energy absorption efficiency.

关键词： Hygrothermal aging effect Woven glass/epoxy composite Impact resistance Dynamic failure Energy absorption

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经济激励干预戒烟研究进展

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中国健康教育 2024年第1期40卷 61-67页

作者：杨晓尘林昊翔曹望楠林浩张蓝超常春北京大学公共卫生学院社会医学与健康教育系北京100191 北京大学全球健康发展研究院北京100871

烟草使用造成了巨大健康风险和经济负担,是亟须应对的公共卫生问题。经济激励作为行为治疗的一种干预措施,已被证明在一般吸烟者及特殊吸烟者中均能有效提高戒烟率。但目前的研究存在许多未解决的问题,本文通过综述经济激励干预戒烟的... 详细信息

烟草使用造成了巨大健康风险和经济负担,是亟须应对的公共卫生问题。经济激励作为行为治疗的一种干预措施,已被证明在一般吸烟者及特殊吸烟者中均能有效提高戒烟率。但目前的研究存在许多未解决的问题,本文通过综述经济激励干预戒烟的现状和理论基础,为后续将经济激励应用于我国吸烟者戒烟干预、探索行为变化及其影响因素提供参考。

关键词：经济激励戒烟干预健康行为行为经济

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激光打印墨粉类字迹材料耐老化性分析

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合成材料老化与应用 2024年第1期53卷 29-31页

作者：赵萍刘飞杨晓晨宋鎏上海市质量监督检验技术研究院上海201114􁽈

通过对激光打印墨粉类字迹材料耐液体介质、耐湿热性、耐干热性及耐光照性等测试,研究其耐老化性。研究表明,黑色字迹材料耐老化性优于红色和黄色字迹材料,紫外光照和高温条件对激光打印墨粉类字迹材料影响较大。

关键词：激光打印字迹材料耐老化性

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FZG齿轮试验机方法在齿轮油上的应用研究

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润滑油 2024年第2期39卷 29-36页

作者：石啸雷凌杨晓晨曹静思赵海鹏中国石化润滑油有限公司北京研究院北京100085

齿轮箱设备所用齿轮油最为关键的性能是承载性能。常规理化测试不足以全面评价齿轮油的承载性能,因此国内外研究机构结合机械设备开发了许多评价齿轮油承载性能的试验方法。研究表明:简单的台架测试方法一般与设备实际工况相关性差,在... 详细信息

齿轮箱设备所用齿轮油最为关键的性能是承载性能。常规理化测试不足以全面评价齿轮油的承载性能,因此国内外研究机构结合机械设备开发了许多评价齿轮油承载性能的试验方法。研究表明:简单的台架测试方法一般与设备实际工况相关性差,在齿轮试验台上使用指定几何结构的齿轮可以更好地表征齿轮润滑剂的承载性能。文章主要阐述了润滑剂对齿轮不同失效模式的影响,以及如何用适当的测试方法量化,并准确表征润滑剂的承载性能。

关键词： FZG 齿轮试验机擦伤磨损微点蚀

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Commissioning and operation of the cryostat for 3W1 SC wiggler

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Nuclear Science and Techniques 2023年第6期34卷 43-54页

作者： Miao-Fu Xu Xiang-Zhen Zhang Rui Ye Jin-Can Wang xiao-Juan Bian Yao Gao Min-Xian Li Fu-San chen xiao-chen yang Rui Ge Institute of High Energy Physics Chinese Academy of SciencesBeijing100049China Key Laboratory of Particle Acceleration Physics and Technology Chinese Academy of SciencesBeijing100049China Center for Superconducting RF and Cryogenics Institute of High Energy PhysicsBeijing100049China University of Chinese Academy of Sciences Beijing100049China

A 3W1 superconducting wiggler(SCW)with the pole gap of 68 mm was successfully tested and installed in a BEPC II storage ring in November,*** goal of zero liquid helium consumption was achieved,and the cryogenic system exhibited a 12%residual cooling capacity(approximately 0.69 W@4.2 K).The 3W1-SCW was set to operate at 2.49 T and has been operating for more than seven *** instances of magnet quenching occurred during the normal *** evaporated helium gas can be recycled to the helium gas recycling system when the pressure in the helium tank is higher than the parameter value(the setpoint of the pressure value is 1.2 bara).The cryogenic system can be recovered within 4 h if sufficient liquid helium is available to inject into the cryostat.

关键词： Cryostat Commissioning SC wiggler Synchrotron radiation

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Experimental and numerical investigation of the impacts of rotor tip-rake on excitation forces of pump-jet propulsors

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Journal of Hydrodynamics 2024年第1期36卷 142-157页

作者： Xue-qin Ji xiao-song Zhang chen-jun yang xiao-qian Dong State Key Laboratory of Ocean Engineering Marine Numerical Experiment CentreSchool of Naval ArchitectureOcean and Civil EngineeringShanghai Jiao Tong UniversityShanghai200240China CSSC Shanghai Marine Energy Saving Technology Co. Ltd.Shanghai200011China China Ship Scientific Research Center Shanghai Branch Shanghai200011China

The tip-clearance flow in a pump-jet propulsor exerts great impacts on the fluctuating pressures and resultant unsteady forces,which are important sources of structural vibrations and radiated noise *** blade geometry close to the tip is an important factor determining the vortex strength in the tip-clearance *** the open-water condition,the effects of raking the rotor tips on the duct-surface fluctuating pressures and the resultant unsteady forces acting on different components of the propulsor are investigated via physical model experiments and the numerical solution of Reynolds-averaged Navier-Stokes(RANS)equations coupled with the SST k-ωturbulence *** measured and simulated results of hydrodynamic pressures are consistent to each other,and the simulated flows help better understand why the fluctuating pressures change with the tip *** strong fluctuations of duct-surface pressures are caused by intensive tip separation *** duct-surface pressure fluctuations are effectively reduced by using the rake distribution near the tip towards blade back side and,for the combination of the five-bladed rotor and the seven-bladed stator,the resultant unsteady horizontal(and vertical)forces acting on the duct and stator are also reduced;while increasing rake leads to negative effect on pressure fluctuations and unsteady horizontal(and vertical)forces acting on all the components of the propulsor.

关键词： Pump-jet tip-clearance tip-rake fluctuating pressures excitation forces

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Stromal thrombospondin 1 suppresses angiogenesis in oral submucous fibrosis

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International Journal of Oral Science 2024年第1期16卷 163-172页

作者： xiao yang Hui Zhao Rui Li yang chen Zhi Xu Zhengjun Shang State Key Laboratory of Oral&Maxillofacial Reconstruction and Regeneration Key Laboratory of Oral Biomedicine Ministry of EducationHubei Key Laboratory of StomatologySchool&Hospital of StomatologyWuhan UniversityWuhanChina Department of Oral and Maxillofacial-Head and Neck Oncology School of Stomatology–Hospital of StomatologyWuhan UniversityWuhanChina Department of Stomatology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina

A decline in mucosal vascularity is a histological hallmark of oral submucous fibrosis (OSF), a premalignant disease that is largely induced by betel quid chewing. However, the lack of available models has challenged studies of angiogenesis in OSF. Here, we found that the expression of thrombospondin 1 (THBS1), an endogenous angiostatic protein, was elevated in the stroma of tissues with OSF. Using a fibroblast-attached organoid (FAO) model, the overexpression of THBS1 in OSF was stably recapitulated in vitro. In the FAO model,treatment with arecoline, a major pathogenic component in areca nuts, enhanced the secretion of transforming growth factor (TGF)-β1 by epithelial cells, which then promoted the expression of THBS1 in fibroblasts. Furthermore, human umbilical vein endothelial cells (HUVECs)were incorporated into the FAO to mimic the vascularized component. Overexpression of THBS1 in fibroblasts drastically suppressed the sprouting ability of endothelial cells in vascularized FAOs (v FAOs). Consistently, treatment with arecoline reduced the expression of CD31in v FAOs, and this effect was attenuated when the endothelial cells were preincubated with neutralizing antibody of CD36, a receptor of THBS1. Finally, in an arecoline-induced rat OSF model, THBS1 inhibition alleviated collagen deposition and the decline in vascularity in vivo. Overall, we exploited an assembled organoid model to study OSF pathogenesis and provide a rationale for targeting THBS1.

关键词： angiogenesis elevated endogenous

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Genesis and Accumulation of Paleo-Oil Reservoir in Dabei Area,Kuqa Depression,Northwest China:Implications for Tight-Gas Accumulation

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Journal of Earth Science 2024年第2期35卷 655-665页

作者： Fujie Jiang xiao chen Pengwei Wang Xinghe Shao Haijun yang State Energy Center for Shale Oil Research and Development Beijing102206China National Key Laboratory of Oil and Gas Resources and Engineering Beijing102249China College of Geosciences China University of PetroleumBeijing102249China CNOOC International Ltd. Beijing100027China Research Institute of Petroleum Exploration&Production SINOPECBeijing100083China Research Institute of Petroleum Exploration and Development Tarim OilfieldPetroChinaKorla841000China

Paleo-oil reservoir is of great importance to understand hydrocarbon enrichment mechanism and hydrocarbon exploration potential,but is yet poorly investigated in Kuqa *** occurrence of the paleo-oil reservoir in Dabei area was proved by quantitative grain fluorescence(QGF)and fluid inclusion *** history of the paleo-oil reservoir was reconstructed through:(1)oil-source correlation;(2)time coupling of source rock maturation,porosity evolution and migration *** impact of paleo-oil reservoir on tight-gas accumulation was consequently *** suggest that considerable oil was accumulated in the K_(1)bs reservoir with paleo oil-water contact in Dabei 2 Well and Dabei 201 Well at 5800 and 6040 m,*** oil was primarily sourced from Triassic source rocks with Jurassic source rocks of secondary importance,which was at oil generation window(0.7%–1.1%Ro)during 9–6 and 7.5–5 Ma,*** occurrence of K_(1)bs tight reservoir(porosity<12%)was about 25 Ma,while faults and associated fractures at Kelasue structural belt were developed approximately from 8 to 3.5 ***,the tight oil accumulation was formed during 8–5 *** paleo-oil reservoir in Dabei 1 gas field was destroyed by the evaporation fractionation in later stage.

关键词： Paleo-oil reservoir Dabei area Kuqa Depression Northwest China petroleum geology

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