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川东北五宝场地区侏罗系沙溪庙组储层特征及主控因素

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岩性油气藏 2024年第5期36卷 87-98页

作者：张晓丽王小娟张航陈沁关旭赵正望王昌勇谈曜杰中国石油西南油气田公司勘探开发研究院成都610041 中国石油西南油气田公司川东北气矿四川达州635000 中国石油西南油气田公司开发事业部成都610041 成都理工大学沉积地质研究院成都610059

川东北地区侏罗系沙溪庙组致密砂岩具有较大的勘探潜力。利用铸体薄片、扫描电镜、阴极发光、X射线衍射、孔渗、压汞和包裹体均一温度等分析测试资料,对川东北五宝场地区侏罗系沙溪庙组储层特征进行了研究,并结合地震解释成果分析了储... 详细信息

川东北地区侏罗系沙溪庙组致密砂岩具有较大的勘探潜力。利用铸体薄片、扫描电镜、阴极发光、X射线衍射、孔渗、压汞和包裹体均一温度等分析测试资料,对川东北五宝场地区侏罗系沙溪庙组储层特征进行了研究,并结合地震解释成果分析了储层致密化原因以及优质储层分布特征。研究结果表明:(1)川东北五宝场地区侏罗系沙溪庙组砂岩储层具有较高的长石和岩屑含量,分选和磨圆一般,结构成熟度和成分成熟度均较低,储层孔隙度大多小于6%,渗透率大多小于1 mD,孔渗相关性及孔隙结构均较差,主要发育裂缝-孔隙型储层。(2)研究区侏罗系沙溪庙组储层处于中成岩阶段A期,钙质胶结作用导致储层局部致密化,埋藏压实作用和浊沸石胶结是导致沙溪庙组砂岩致密化的主要原因,油气在储层致密化前后持续充注。(3.早期绿泥石环边胶结、大气水的淋滤以及构造破裂作用是研究区主要的建设性成岩作用,对原生粒间孔的保存、次生溶孔的形成和提高储层渗透性具有重要意义。(4)沉积微相、成岩作用和构造破裂作用共同控制了优质储层的分布,具早期绿泥石环边胶结、浊沸石弱胶结、长石溶蚀、裂缝发育的水下分流河道是相对优质砂岩储层的主要发育区。

关键词：致密砂岩水下分流河道绿泥石环边胶结压实作用浊沸石胶结构造破裂作用沙溪庙组侏罗系五宝场地区四川盆地

Household energy stacking and structures in Pakistan-Results from a multiple-energy study in Azad Kashmir and Punjab

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环境科学学报:英文版 2023年第11期133卷 152-160页

作者： Xiaoqiao Jiao Rui Xiong Zhihan Luo yaojie Li Hefa Cheng Audil Rashid Guofeng Shen Shu Tao College of Urban and Environmental Sciences Peking UniversityBeijing 100871China Faculty of Science Botany DepartmentUniversity of GujratGujrat 50700Pakistan College of Environmental Science and Technology Southern University of Science and TechnologyShenzhen 518055China

Solid fuel use(SFU)is common in most developing countries and would release many hazardous air pollutants posing high risks on human *** Global Burden of Disease(GBD)study highlighted risks associated with household SFU in Pakistan,however,high uncertainties prevail because of scanty data on SFU and unaccounted energy *** study conducted a field campaign aiming at collecting first-hand data on household energy mix in *** first survey was in Punjab and Azad Kashmir,and revealed that stacked energy use was pervasive,especially for *** stacking was found to be much more obvious in SFU households(defined as those using SFU dominantly)compared to those *** were significantly substantial differences between Azad Kashmir and Punjab because of distinct resources available and economic *** materials comprised up to nearly 70% in Azad Kashmir,but in Punjab,gas was frequently used for *** investigating primary household energy would probably overestimate main energy types that being used for a longer time but underestimated other supplements,suggesting the preference of multiple-energy surveys in household energy studies.

关键词： Household energy Solid fuel use Energy stacking Developing country Pakistan

Investors’perspective on forecasting crude oil return volatility:Where do we stand today?

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Journal of Management Science and Engineering 2022年第3期7卷 423-438页

作者： Li Liu Qianjie Geng yaojie Zhang Yudong Wang School of Finance Nanjing Auditing UniversityNanjing211815China School of Economics and Management Nanjing University of Science and TechnologyNanjing210094China

In this paper,we review studies of oil volatility prediction from a new perspective:that of investors who require economic evaluations of forecasting *** results indicate that no single volatility model outperforms all of the competing models,of which GARCH and realized volatility models are the most *** studies evaluate forecasting performance using two criteria:value at risk and hedging *** instability and model uncertainty are technical issues that affect out-of-sample *** studies assess volatility forecasts from the perspectives of portfolio management and derivative *** oil volatility can predict economic variables and the asset pricing implications of oil volatility for financial markets are important topics that require attention.

关键词： Oil volatility Out-of-sample forecasting Economic predictability Evaluation criteria

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宁波栎社机场能见度变化特征分析

中国民航飞行学院学报 2024年第2期35卷 41-45页

作者：陶俞锋赵成华刘耀杰奴开中国民用航空宁波空中交通管理站浙江宁波315154

利用宁波栎社机场1991年1月-2020年12月的能见度观测资料,分析了机场能见度的日变化、年变化和年际变化特征。结果表明:宁波机场近3.年来平均能见度变化呈浅“U”型,1991-2004年总体为下降趋势,2005年后开始缓慢上升;夏季平均能见度最好... 详细信息

利用宁波栎社机场1991年1月-2020年12月的能见度观测资料,分析了机场能见度的日变化、年变化和年际变化特征。结果表明:宁波机场近3.年来平均能见度变化呈浅“U”型,1991-2004年总体为下降趋势,2005年后开始缓慢上升;夏季平均能见度最好,春、秋季较接近,次之,冬季最差。各级能见度3.00 m的年均日数分别为18.3.、58.5天和13..4天,且呈下降趋势。累年各月逐时能见度3.01时;能见度3.00 m在11月-次年2月清晨时刻出现频率达20%以上,而7-9月份出现频率明显降低,基本在10%以下。影响宁波机场能见度<1 km的天气现象有雾、雨、雪三种,其中最主要的是雾。

关键词：宁波机场能见度频率特征分析

Tribochemical synthesis of functionalized covalent organic frameworks for anti-wear and friction reduction

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Friction 2023年第10期11卷 1804-1814页

作者： Xiaozhi ZHANG Qi LU yaojie YAN Tingting ZHANG Shujuan LIU Meirong CAI Qian YE Feng ZHOU Weimin LIU State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi’an 710072China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of SciencesLanzhou 730000China

Tribochemistry can be defined as a field dealing with the chemical reactions occurring in the friction zone,capable of catalyzing mechanical and physico-chemical changes in the friction contact area,facilitating the formation of tribo-films,which is also an efficient approach to fabricate novel innovative *** this paper,we report the successful synthesis of the silicon oil(SO)-functionalized covalent organic frameworks(COFs)prepared via the tribochemical method when subjected to the reciprocating friction;during the friction process,the rich aldehyde-terminated COFs can bond with amino SO via the Schiff base reaction between aldehyde group and amino group to obtain the desired functionalized COFs(SO@COF-LZU1).The tribochemical reaction progress was tracked through in-situ monitoring of the friction coefficient and the operating conditions during the entire friction ***,the friction coefficient continued to decrease until it finally stabilized as the reaction progressed,which revealed the formation of a protective ***,an approximate tribochemical model was presented,wherein the reaction mechanism was investigated and analyzed by employing structural analysis techniques like magic angle spinning nuclear magnetic resonance(MAS NMR),transmission electron microscopy(TEM),and X-ray photoelectron spectroscopy(XPS).Furthermore,the tribochemical-induced SO@COF-LZU1 exhibited remarkable tribological performance with a low friction coefficient of 0.1 and 95.5%reduction in wear volume when used as additives of 500SN base *** prime focus of our research was on the preparation and functionalization of COF materials via tribochemical reactions,unraveling a new avenue for the rational design and preparation of functional materials.

关键词： tribochemical reaction covalent organic frameworks(COFs) silicon oil(SO)functionalization lubricant additives tribological properties

Impacts of snow cover duration on vegetation spring phenology over the Tibetan Plateau

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Journal of Plant Ecology 2019年第3期12卷 583-592页

作者： Ke Huang Jiaxing Zu Yangjian Zhang Nan Cong yaojie Liu Ning Chen Lhasa Plateau Ecosystem Research Station Key Laboratory of Ecosystem Network Observation and ModelingInstitute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100190China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100190China

Aims Snow cover occupies large percentage of land surface in Tibetan *** cover duration(SCD)during non-growing seasons plays a critical role in regulating alpine vegetation’s phenology by affecting the energy budgets of land surface and soil moisture *** period’s snow cover during non-growing season may have distinct effect on the vegetation’s *** of season(SOS)has been observed advanced under the ongoing cli-mate change in the plateau,but it still remains unclear how the SCD alters the *** study attempts to answer the following questions:(i)What is the pattern of spatial and temporal variations for SCD and grassland SOS?(ii)Which period’s SCD plays a critical role in grassland’s SOS?Methods The remote sensing datasets from the Moderate Resolution Imaging Spectroradiometer(MODIS)were utilized to compute the SOS and SCD on the Tibetan Plateau over *** Asymmetric Gaussian function was applied to extract *** also explored the spatial pattern and temporal variation of SOS and ***,by using linear correlation coefficients,we investigated the driving effects of different period’s non-growing season SCD on *** Findings The non-growing season SCD slightly decreased during 2003.2015,while SOS exhibited an overall advancing *** trends in SOS were observed in the eastern plateau,and the delayed trends were mainly founded in western *** cover area exhibited two separate peaks during autumn and late winter over the *** SCD regions mainly distributed in middle-east of the plateau,while shrunken SCD distributed in other regions of the *** of different seasons caused distinct effects on vegetation *** autumn SCD advanced SOS over the eastern *** slightly lengthened SCD postponed SOS over the western *** the wet meadow regions,advanced SOS was positively associated with SCD during the entire non-growing season,whereas for the dry steppe,SCD over t

关键词： snow cover duration start of season remote sensing Tibetan Plateau

Sustainable wildlife protection on the Qingzang Plateau

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Geography and Sustainability 2021年第1期2卷 40-47页

作者： Yangjian Zhang Ran Zhao yaojie Liu Ke Huang Juntao Zhu Lhasa station Key Laboratory of Ecosystem Network Observation and ModelingInstitute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China Center for Excellence in Tibetan Plateau Earth Sciences Chinese Academy of SciencesBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100190China Peking University Shenzhen Graduate School Shenzhen 518055China

Besides its ecological services to China and even Asia,the Qingzang Plateau(QP)hosts a rich variety of wildlife *** the last century,wildlife population decreased quickly on the QP,driven by human ***,wildlife has witnessed rapid recovery mainly propelled by a series of wildlife conservation ***,some cautions merit attentions to sustain wildlife restoration and conservation on the *** paper casted an overview of environmental and social-economic changes on the QP affecting wildlife ***-sults show that QP has been warming,which can benefit wildlife recovery by easing extreme low temperature *** fast growing social economy across the QP lays a solid economic foundation for investing on wildlife *** such as establishing conservation areas,constructing wildlife pathway corridors,and en-couraging herdsman moving out from wildlife rich regions,have boosted wildlife ***,wildlife recovery is constrained by the limited carrying capacity of the ecosystem,left by domestic ***,fences intended to delineate conservation areas or to separate each type of grassland use,have brought about profound side effects on wildlife through fragmentation of their *** is recommended to set up the fence in a more ecological way,which can be achieved by bypassing the wildlife frequent pathway and using mate-rials devoid of steel *** considering both opportunities and problems simultaneously,can the wildlife protection on the QP be sustained.

关键词： Carrying capacity Conservation Climate Social-economy The Qingzang Plateau Wildlife

健身气功锻炼对南宁市中老年女性主观幸福感及自我效能感的影响

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运动精品 2024年第6期43卷 84-87页

作者：胡尧杰黄彬夏朱言涛李承阳王雪冰广西大学体育学院广西南宁530004

目的:探讨健身气功锻炼对中老年女性主观幸福感和自我效能感的影响。方法:采用问卷调查法对南宁市164名有健身气功锻炼习惯的中老年女性进行基本信息、主观幸福感、自我效能感等调查。结果:(1)60岁及以上的女性健身气功锻炼者的主观幸... 详细信息

目的:探讨健身气功锻炼对中老年女性主观幸福感和自我效能感的影响。方法:采用问卷调查法对南宁市164名有健身气功锻炼习惯的中老年女性进行基本信息、主观幸福感、自我效能感等调查。结果:(1)60岁及以上的女性健身气功锻炼者的主观幸福感得分明显高于60岁以下的女性健身气功锻炼者(P3.南宁市健身气功中老年女性锻炼者的自我效能感与主观幸福感的6个维度均呈显著正相关(P<0.05)。结论:60岁及以上的女性健身气功锻炼者的主观幸福感高于60岁以下人群;积极参与健身气功锻炼对南宁市中老年女性主观幸福感、自我效能感具有促进作用;自我效能感越高的健身气功锻炼中老年女性的主观幸福感也越高。

关键词：健身气功中老年女性主观幸福感自我效能感

补阳还五汤联合美托洛尔治疗冠心病的效果及对患者心功能的影响

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临床医学工程 2024年第1期31卷 53-54页

作者：赵燕峰韦要杰黄培培孙艳玲洛阳市中医院心血管一病区河南洛阳471000

目的探讨补阳还五汤联合美托洛尔治疗冠心病的效果及对患者心功能的影响。方法将我院收治的80例冠心病患者随机分为两组。对照组应用美托洛尔单药治疗,观察组在对照组基础上采用补阳还五汤治疗。比较两组的疗效、心功能、不良反应发生... 详细信息

目的探讨补阳还五汤联合美托洛尔治疗冠心病的效果及对患者心功能的影响。方法将我院收治的80例冠心病患者随机分为两组。对照组应用美托洛尔单药治疗,观察组在对照组基础上采用补阳还五汤治疗。比较两组的疗效、心功能、不良反应发生率。结果观察组总有效率为95.00%,高于对照组的77.50%(P0.05)。结论补阳还五汤联合美托洛尔治疗冠心病的效果较好,可有效缓解患者心绞痛症状,提高其心功能,且安全可靠。

关键词：补阳还五汤美托洛尔冠心病心功能安全性