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Indocyanine green plasma clearance rate and 99mTc-galactosyl human serum albumin single-photon emission computed tomography evaluated preoperative remnant liver
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作者 Kentaro Iwaki Satoshi Kaihara +3 位作者 Ryosuke Kita Koji Kitamura Hiroki Hashida Kenji Uryuhara 《World Journal of Clinical Cases》 SCIE 2022年第25期8844-8853,共10页
BACKGROUND Preoperative evaluation of future remnant liver reserves is important for safe hepatectomy.If the remnant is small,preoperative portal vein embolization(PVE)is useful.Liver volume analysis has been the prim... BACKGROUND Preoperative evaluation of future remnant liver reserves is important for safe hepatectomy.If the remnant is small,preoperative portal vein embolization(PVE)is useful.Liver volume analysis has been the primary method of preoperative evaluation,although functional examination may be more accurate.We have used the functional evaluation liver using the indocyanine green plasma clearance rate(KICG)and 99mTc-galactosyl human serum albumin single-photon emission computed tomography(99mTc-GSA SPECT)for safe hepatectomy.AIM To analyze the safety of our institution’s system for evaluating the remnant liver reserve.METHODS We retrospectively reviewed the records of 23 patients who underwent preoperative PVE.Two types of remnant liver KICG were defined as follows:Anatomical volume remnant KICG(a-rem-KICG),determined as the remnant liver anatomical volume rate×KICG;and functional volume remnant KICG(frem-KICG),determined as the remnant liver functional volume rate based on 99mTc-GSA SPECT×KICG.If either of the remnant liver KICGs were>0.05,a hepatectomy was performed.Perioperative factors were analyzed.We defined the marginal group as patients with a-rem-KICG of<0.05 and a f-rem-KICG of>0.05 and compared the postoperative outcomes between the marginal and not marginal(both a-rem-KICG and f-rem-KICG>0.05)groups.RESULTS All 23 patients underwent planned hepatectomies.Right hepatectomy,right trisectionectomy and left trisectionectomy were in 16,6 and 1 cases,respectively.The mean of blood loss and operative time were 576 mL and 474 min,respectively.The increased amount of frem-KICG was significantly larger than that of a-rem-KICG after PVE(0.034 vs 0.012,P=0.0273).The not marginal and marginal groups had 17(73.9%)and 6(26.1%)patients,respectively.The complications of Clavian-Dindo classification grade II or higher and post-hepatectomy liver failure were observed in six(26.1%)and one(grade A,4.3%)patient,respectively.The 90-d mortality was zero.The marginal group had no significant difference in postoperative outcomes(prothrombin time/international normalised ratio,total bilirubin,complication,post-hepatectomy liver failure,hospital stay,90-d,and mortality)compared with the not-marginal group.CONCLUSION Functional evaluation of the remnant liver enabled safe hepatectomy and may extend the indication for hepatectomy after PVE treatment. 展开更多
关键词 99mTc-galactosyl human serum albumin single-photon emission computed tomography HEPATECTOMY Indocyanine green Indocyanine green plasma clearance rate Liver function evaluation Remnant liver reserve
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Study on the Retention Rate of Green Tea Catechins Components and Tea Polyphenol by Different Processing Technology 被引量:7
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作者 Hong-Chun Cui Jian-Yong Zhang +3 位作者 Ji-Zhong Yu Xu-Xia Zheng Cun Ao Yu-Xiao Mao 《茶叶》 2013年第4期356-361,共6页
The aim of this research was to explore the effect of fixation,rolling,and drying processing technology on the retention rate of green tea catechins components and tea polyphenol.Different fixation processes(rotary dr... The aim of this research was to explore the effect of fixation,rolling,and drying processing technology on the retention rate of green tea catechins components and tea polyphenol.Different fixation processes(rotary drumfiring,microwave,steam-blasting),rolling process(weight of rolling,gently press rolling and traditional rolling),drying process(stove drying,roasting dehydration,baked fried drying) were adopted.The effect of different tea processing technology on the retention rate of catechins component and tea polyphenol was analyzed.It showed that the microwave fixation process,gently press rolling process,baked fried dry process were beneficial to keep high levels of EGCG,C,EGC,EC,ECG. 展开更多
关键词 茶儿茶素 加工工艺 茶多酚 保留率 组分 干燥处理 固定方法 蒸汽爆破
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夹砂层土壤Green-Ampt入渗模型的改进与验证 被引量:17
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作者 范严伟 赵文举 +1 位作者 王昱 毕贵权 《农业工程学报》 EI CAS CSCD 北大核心 2015年第5期93-99,共7页
对于土层夹砂结构,湿润锋穿过砂层上界面时,入渗率变为稳渗率。为确定各因素下夹砂层土壤的稳渗率,在Green-Ampt入渗模型基础上,引入导水度系数(小于1)来量化上层土壤的导水程度,建立了改进的夹砂层土壤Green-Ampt入渗模型。采用HYDRUS... 对于土层夹砂结构,湿润锋穿过砂层上界面时,入渗率变为稳渗率。为确定各因素下夹砂层土壤的稳渗率,在Green-Ampt入渗模型基础上,引入导水度系数(小于1)来量化上层土壤的导水程度,建立了改进的夹砂层土壤Green-Ampt入渗模型。采用HYDRUS-1D软件,模拟了不同土壤质地、初始含水率、压力水头、砂层埋深和砂层厚度条件下的稳渗过程,根据模拟结果分析了夹砂层土壤的入渗规律及其影响因素,稳渗率主要受土壤质地、压力水头和砂层埋深的影响。在相同压力水头、初始含水率和砂层厚度下模拟获得不同砂层埋深的稳渗率,并采用改进的Green-Ampt入渗模型拟合,求得导水度系数和进水吸力值。分析发现导水度系数变化较小,为简化计算,取其平均值0.95。在此基础上,提出了由土壤物理特性参数进气值倒数估算进水吸力的计算公式。利用秦王川地区的夹砂层土壤积水入渗试验及已有文献资料验证所建模型的有效性,结果表明所建模型待定参数少,计算误差基本在5%以内,且试验设计较简单,可为农田水分管理及工程防渗技术提供理论依据。 展开更多
关键词 入渗 数值分析 验证 层状夹砂土 稳渗率 改进green-Ampt模型
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GREEN BUILDING RATING FOR OFFICE BUILDINGS-LESSONS LEARNED 被引量:1
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作者 Jian Zuo Bo Xia +2 位作者 Qing Chen Stephen Pullen Martin Skitmore 《Journal of Green Building》 2016年第2期131-146,共16页
Office buildings constitute a significant proportion of the non-residential building stock.In recent years,various rating tools have been developed to foster green office building development.The Green Building Counci... Office buildings constitute a significant proportion of the non-residential building stock.In recent years,various rating tools have been developed to foster green office building development.The Green Building Council of Australia(GBCA)has devel-oped the Green Star-Office rating tools for this purpose.There are an increasing number of stakeholders adopting these tools to showcase their efforts in sustain-able development.This research focuses on the challenges and barriers in obtain-ing GBCA ratings in Australian Office buildings.To accomplish this,the scoring sheets from the rating of 264 certified office buildings were collected and critically analysed.The findings indicated that credits related to the attributes of innovation,ecology and energy are comparatively difficult to achieve.It was also found in this study that a large number of projects did not apply for the specific credits of refrig-erant global warming potential,re-use of façade,topsoil and fill removal from site,and individual comfort control.This study provides a useful reference to both the property developer and the Green Building Council of Australia for green building developments in the future.In particular,the findings provide useful inputs to the development of the next generation of green building rating tools. 展开更多
关键词 green building rating office building GBCA AUSTRALIA
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A Cross-Sectional Study of Utilization of Green Building Rating Tools by Selected Professionals in the Zambian Building Industry
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作者 Mutinta Sichali Mundia Muya Balimu Mwiya 《Journal of Building Construction and Planning Research》 2020年第3期217-235,共19页
Green building rating tools used for planning and assessing the impact of buildings on the environment are continually revised in line with user needs. The appropriateness of tools for the Zambian building industry de... Green building rating tools used for planning and assessing the impact of buildings on the environment are continually revised in line with user needs. The appropriateness of tools for the Zambian building industry depends on whether the tools adequately meet minimum green buildings standards and the country’s environmental aspirations. The utilization of green building rating tools is important if Zambia is to achieve the real benefits of green buildings, however very little is known about the levels of utilization in Zambia. A cross-sectional study of 115 professionals from the building industry in Zambia was undertaken using a sequential mixed method approach, to investigate the level of utilization, preferred criteria and, the barriers and drivers to the utilization of tools. The significance of the study was that it demonstrated the association between utilization of green building rating tools and environmental, technological, economic, and social green buildings practices by selected professionals in the Zambian building industry. There is a need to use materials and practices that are locally based and promote the local economy. The technical needs were met in tools, that were considered easy to use, interesting and comprehensive. Some of the green building rating tools were considered unsuitable due to the absence of appropriate criteria and the main economic challenge was the high cost of certification. The association was significant between utilization and those involved in a variety of projects than those who were involved in only residential buildings. Barriers to utilization were a lack of government regulations on green buildings designs and the high cost of certification. The drivers were environmental benefits, the interest of developers in green buildings, and having technical skills. The study recommends a review of the current building regulations to include green buildings practices and materials and adaptation of appropriate rating tools. 展开更多
关键词 green Buildings Rating Tools UTILIZATION CRITERIA Barriers DRIVERS CERTIFICATION Zambia
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Mind the Gap:Predicted vs.Actual Performance of Green Buildings
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作者 Brett Pollard 《施工技术》 CAS 北大核心 2012年第2期1-8,21,共9页
This paper reviews the major North American and Australian sustainability rating tools to determine how they measure building energy performance.It then reviews the major building energy simulation software packages.T... This paper reviews the major North American and Australian sustainability rating tools to determine how they measure building energy performance.It then reviews the major building energy simulation software packages.The paper then details some of the literature surrounding predicted vs.actual energy performance in green buildings,and concludes with an argument for a more performance-orientated ratings regime. 展开更多
关键词 green BUILDINGS RATING TOOLS building energy PERFORMANCE
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How green building rating systems affect designing green
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作者 Yueer He Thomas Kvan +2 位作者 Meng Liu Baizhan Li 侯恩哲 《建筑节能》 CAS 2018年第4期39-39,共1页
Storing thermal energy in mass concrete floors would have a major impact on the stability of the temperature in buildings.The concept of a thermal battery refers to storing the supplied radiant heat and releasing this... Storing thermal energy in mass concrete floors would have a major impact on the stability of the temperature in buildings.The concept of a thermal battery refers to storing the supplied radiant heat and releasing this heat the next day through radiation and convection.In this study,an approach is introduced to examine the idea of thermal battery in thick concrete flooring(1.22 m)using the earth as a heat source.Controlled experiments were built and conducted on an instrumented 3000 m 2 industrial facility.The heating radiant floor combining with ground source system was operated during off-peak hours and the air conditioning system was disabled for 24 h during the test period.The heat pumps were operated in single stage using less power compared to when operated on demand.Indoor air temperature showed that 100(37.78℃)supply temperature at the ground source heat pump would be enough to maintain a stable warm temperature during cold days.Two weather conditions in the winter were selected to do the tests.The second test had a colder ambient temperature to verify the procedure.The indoor air temperature showed that the night heating system performs well for both cases because it maintained a constant temperature for the entire operational day even in the daytime when every heating unit was off.This approach of applying the heating at nighttime with lower electricity rates would lead to significant operational cost savings in the building. 展开更多
关键词 MASS concrete FLOOR Radiant HEATING system Thermal storage GEOTHERMAL heat PUMPS
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THE EFFECTIVENESS OF BOMA BESt AND LEED CANADA EB:O&M IN GREENING COMMERCIAL BUILDINGS
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作者 Richard Roos Mark Gorgolewski 《Journal of Green Building》 2011年第3期76-87,共12页
LEED Canada for Existing Buildings:Operations and Maintenance(LEED Canada EB:O&M)and Building Owners and Managers Association’s Building Environmental Standards(BOMA BESt)are complex green rating systems that off... LEED Canada for Existing Buildings:Operations and Maintenance(LEED Canada EB:O&M)and Building Owners and Managers Association’s Building Environmental Standards(BOMA BESt)are complex green rating systems that offer owners,managers,consultants,and tenants distinct value propositions for existing buildings.Upon close examination,significant variations between the systems are evident in certification process,cost,rigor,engagement,marketing,accessibility,transparency,management,and program philosophy.Despite the many differences between the systems,they are often seen to be complementary programs and are sometimes used in tandem for the same building.This paper reports on a survey of the industry perceptions of the value and strengths of the LEED Canada EB:O&M and BOMA BESt rating systems with respect to the above criteria.As a result of the fundamentally different nature of the programs,preferences for LEED Canada EB:O&M and BOMA BESt are determined by stakeholder values and the programs are used for a variety of reasons. 展开更多
关键词 green rating CERTIFICATION STAKEHOLDER commercial buildings sustainability survey LEED BOMA BESt
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GREEN RATING INTEGRATION PLATFORM–A DECISION MAKING TOOL FOR MULTI-MODAL FACILITIES:CREDIT HARMONIZATION AND A SUSTAINABLE WATER&MATERIAL PRACTICES CASE STUDY
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作者 Ashraful Alam Liv Haselbach +2 位作者 Garrett DeRooy Cara Poor Michael Wolcott 《Journal of Green Building》 2014年第4期161-173,共13页
There are multitudes of sustainability rating systems and guidelines,and it is difficult to decide which ones to use and how to use them.In addition,multi-modal projects have different focal areas and associated ratin... There are multitudes of sustainability rating systems and guidelines,and it is difficult to decide which ones to use and how to use them.In addition,multi-modal projects have different focal areas and associated rating systems related to each mode or other aspect of the project.Five green ratings systems representative of aspects of a multi-modal ferry facility had previously been selected and were used in a four step methodology to synthesize into a strategic decision making platform.This current research focuses on how to make more detailed decision making harmonization amongst the credits in the rating systems.Using an analytical hierarchy process(AHP)of the credits in the rating systems,it was determined that the two main groups of information that could be used for harmonization were key intents or goals(KI)and key strategies or practices(KS).A short cursory case study example of how these KIs and KSs might be further cross-coded in an open database with the credit subcategories and corresponding rating systems is also presented.The database can filter the credit subcategories across the rating system for a specific key intent or key strategy.The harmonized lists and database may facilitate decision makers and construction managers in correlating intents and methodologies for a project across multiple rating systems. 展开更多
关键词 Sustainable construction WATER materials green rating systems intents/goals strategies/technologies GRIP
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SHEARING LAYERS CONCEPT AND LEED GREEN BUILDINGS IN BOTH RATING SCHEMES AND CERTIFIED PROJECTS
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作者 Svetlana Pushkar Oleg Verbitsky 《Journal of Green Building》 2018年第4期77-90,共14页
The Leadership in Energy and Environmental Design(LEED)for New Construction and Major Renovations v3(NC)and LEED for Existing Buildings:Operations and Maintenance v3(EB)schemes were studied to examine the application ... The Leadership in Energy and Environmental Design(LEED)for New Construction and Major Renovations v3(NC)and LEED for Existing Buildings:Operations and Maintenance v3(EB)schemes were studied to examine the application of the shearing layer concept to green buildings.The manners in which(i)rating systems in their current configurations and(ii)certified projects in their practical applications treated the long life-expectances in buildings and short life-expectancies in systems were questioned.To maximally reduce nondemonic intrusion,we studied only those states in the United States in which statistically viable numbers of projects had been completed in 2016.A two-way mixed analysis of variance(ANOVA)model was used to evaluate the interaction between two types of buildings(i.e.,NC vs EB)and two sets of sub-layers(i.e.,Site,Structure,and Skin from the Building layer and Services,Space Plane,and Stuff from the Service layer).The discrepancy in the case of a new building and the similarity in the case of a renovated building between rating schemes and certified projects were revealed:(i)the NC rating scheme prefers to emphasize the Service layer(SL),whereas newly constructed projects prefer to emphasize the Building layer(BL)due to the high performance of the Site and Structure sub-layers;(ii)the EB rating scheme prefers to emphasize the Service layer,as do renovated building projects,due to the high performance of the Stuff sub-layer. 展开更多
关键词 LEED new construction existing buildings shearing layer concept green rating system certified projects
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Convergence Rates for Elliptic Homogenization Problems in Two-dimensional Domain
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作者 ZHAO Jie LI Hong WANG Juan 《Chinese Quarterly Journal of Mathematics》 2017年第3期277-293,共17页
In this paper, we study the convergence rates of solutions for second order elliptic equations with rapidly oscillating periodic coefficients in two-dimensional domain. We use an extension of the "mixed formulati... In this paper, we study the convergence rates of solutions for second order elliptic equations with rapidly oscillating periodic coefficients in two-dimensional domain. We use an extension of the "mixed formulation" approach to obtain the representation formula satisfied by the oscillatory solution and homogenized solution by means of the particularity of solutions for equations in two-dimensional case. Then we utilize this formula in combination with the asymptotic estimates of Green or Neumann functions for operators and uniform regularity estimates of solutions to obtain convergence rates in L^p for solutions as well as gradient error estimates for Dirichlet or Neumann problems respectively. 展开更多
关键词 HOMOGENIZATION Convergence rates green functions Neumann functions
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INTEGRATING GREEN RATING SYSTEMS:A CASE STUDY FOR FERRY TERMINALS
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作者 Michael Thompson Liv Haselbach +1 位作者 Cara Poor Michael Wolcott 《Journal of Green Building》 2013年第1期136-150,共15页
When attempting to achieve sustainability goals for integrated facilities,many green rating systems are available to guide the design,construction,operations and maintenance of a project.Due to the large number of sus... When attempting to achieve sustainability goals for integrated facilities,many green rating systems are available to guide the design,construction,operations and maintenance of a project.Due to the large number of sustainability tools that are available or mandated,it can be confusing to determine which set of guidelines to follow.For the Washington State Ferries(WSF),there is no green rating system which correlates perfectly with the unique intermodal challenges presented by ferry terminals.This paper focuses on five rating systems applicable to WSF:GreenLITES,LEED,Sustainable Sites Initiative,The Port Authority of NY/NJ Sustainable Infrastructure Guidelines(draft),and the draft Marine Vessel Environmental Performance Assessment(MVeP).These rating systems are integrated with a developing set of sustainable ferry guidelines in a green rating integration platform(GRIP).The GRIP readily relates credits and guidelines across multiple systems,aiding WSF in making decisions in accordance with sustainability goals.The GRIP format might similarly be applied to other integrated projects to more effectively and economically address sustainability across all aspects of projects and facility operations. 展开更多
关键词 green rating systems integrated facilities SUSTAINABILITY
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GREEN BUILDING RATING SYSTEM SCORES FOR BUILDING REUSE
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作者 Lu Aye Dominique Hes 《Journal of Green Building》 2012年第2期105-112,共8页
Green Building rating systems are the main vehicles for commercial application of ecologically sustainable design for buildings.Using less materials,modular design for deconstruction,long life structure,using recovera... Green Building rating systems are the main vehicles for commercial application of ecologically sustainable design for buildings.Using less materials,modular design for deconstruction,long life structure,using recoverable materials are emerging concepts to reduce environmental impacts and increase the resource and economic efficiency of buildings.It has been argued that because of recent emergence of these concepts,Green Building rating systems do not fairly recognise the environmental benefits gained.This paper quantifies the impacts of the building reuse concept on the environment and the Green Building rating system scores and compares this with the energy category.It was found that lifecycle embodied greenhouse gas emission of approximately 20 kg CO_(2)-e/m^(2)/annum could be saved,if 80%of the office building components(structure,façade,wall,floor and roof)were reused in Australia.A second finding was that the current BREEAM 2008 and LEED 2009 tools do not provide fair recognition of the potential lifecycle embodied greenhouse gas emission reduction of building reuse compared to operational greenhouse gas emission reduction. 展开更多
关键词 building reuse embodied greenhouse gas emission green building rating system
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基于绿被覆盖率上推的天然草地冠层SPAD值高光谱反演方法
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作者 张爱武 李梦南 +1 位作者 史剑聪 庞海洋 《光谱学与光谱分析》 SCIE EI CAS CSCD 北大核心 2024年第12期3513-3523,共11页
叶绿素是评估草地光合作用能力和生理状况的重要指标。高光谱遥感包含丰富的光谱信息,已经成为无损估算草地叶绿素含量的重要手段。然而,通常获取的草地冠层高光谱数据与实测叶片的叶绿素含量存在尺度不匹配问题,导致高光谱反演叶绿素... 叶绿素是评估草地光合作用能力和生理状况的重要指标。高光谱遥感包含丰富的光谱信息,已经成为无损估算草地叶绿素含量的重要手段。然而,通常获取的草地冠层高光谱数据与实测叶片的叶绿素含量存在尺度不匹配问题,导致高光谱反演叶绿素的精度低。为此,提出基于绿被覆盖率上推的天然草地冠层叶绿素高光谱反演方法。以内蒙古呼伦贝尔典型天然草地为研究对象,利用ASD高光谱仪获取的地面冠层高光谱数据、SPAD叶绿素仪采集的叶片叶绿素相对含量实测值和样方手机数码相片,以绿被覆盖率为媒介,将叶片尺度的叶绿素相对含量实测值上推到冠层尺度。结果表明植被指数与SPAD相关性(-0.74~0.76)普遍高于场平均法上推SPAD(-0.63~0.50)。通过原始冠层光谱反射率、一阶导数光谱和42种常用叶绿素光谱指数构建基于绿被覆盖率上推的天然草地冠层叶绿素高光谱反演模型(SPAD_cover)。单变量的最优草地冠层叶绿素反演模型R^(2)=0.689,RMSE=2.714,RPD=1.752;多元线性逐步回归的最优草地冠层叶绿素反演模型R^(2)=0.833,RMSE=2.019,RPD=2.354。实验表明基于绿被覆盖率将草地叶片叶绿素含量实测值上推至冠层尺度,可以有效提高天然草地冠层叶绿素高光谱反演精度。 展开更多
关键词 天然草地 绿被覆盖率 高光谱 尺度上推 光谱指数 一阶导数光谱
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ESG评级助力绿色金融发展的实践、挑战与监管建议
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作者 黄鹂 《当代金融研究》 2024年第11期50-60,共11页
当前,绿色金融正成为金融行业最具活力的发展领域,绿色金融中的ESG理念在全球范围内得到推广普及。ESG评级是ESG投资中的重要环节,对ESG理念的兴起、ESG体系概况和ESG评级的起源发展进行详细梳理;ESG评级与绿色评估认证在概念起源和业... 当前,绿色金融正成为金融行业最具活力的发展领域,绿色金融中的ESG理念在全球范围内得到推广普及。ESG评级是ESG投资中的重要环节,对ESG理念的兴起、ESG体系概况和ESG评级的起源发展进行详细梳理;ESG评级与绿色评估认证在概念起源和业务实践上存在交叉关系,与传统信用评级在评级目标、评级机构、被评对象和评级信息来源、评级指标体系和评级结果展示方式等方面有较大差别。目前,国际上ESG业务快速发展,主要国家对ESG的监管大多采取强制措施或自愿性准则方式。我国ESG评级尚处于探索发展阶段,ESG评级市场存在缺乏行业规范、信息披露机制有待完善以及ESG评级方法和利益冲突管理有待提升等问题;同时,我国对于ESG评级业务尚未出台明确的监管规定。为进一步助力绿色金融发展,建议规范ESG评级市场、制定统一的ESG信息披露政策、逐步建立ESG评级方法体系、加强ESG评级的国际交流。 展开更多
关键词 绿色金融 ESG评级 信用评级 绿色评估
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中国式现代化目标下构建新型能源体系之路径思考 被引量:13
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作者 侯梅芳 梁英波 徐鹏 《天然气工业》 EI CAS CSCD 北大核心 2024年第1期177-185,共9页
倡导人与自然和谐共生的中国式现代化,对中国能源领域的高质量可持续发展提出了新要求、新部署,“加快规划建设新型能源体系”势在必行。为了助推中国式现代化目标下新型能源体系的构建,分析了其提出的战略背景,明确了其重要意义,阐述... 倡导人与自然和谐共生的中国式现代化,对中国能源领域的高质量可持续发展提出了新要求、新部署,“加快规划建设新型能源体系”势在必行。为了助推中国式现代化目标下新型能源体系的构建,分析了其提出的战略背景,明确了其重要意义,阐述了其内涵特征,提出了其路径建议。研究结果表明:①新型能源体系是社会主义现代化强国建设的关键抓手,是实现碳达峰碳中和目标以及推进生态文明建设的重要支撑,是国家能源安全和国家竞争力的有力保障;②新型能源体系以促进人与自然和谐共生为根本宗旨,以保证能源安全和经济社会发展稳定为基本前提,具有理念更新、能源结构更新、技术创新、治理创新、产业革新、电力革新等内涵特征;③新型能源体系的构建路径包括加快培育绿色低碳文化、加快推动能源结构转型、加快推动产业结构升级、加快攻关关键核心技术、加快构建体制机制保障等。结论认为,立足我国能源资源禀赋,坚持“先立后破”的方式构建清洁低碳、安全高效的新型能源体系,提高能源自给率,特别是油气自给率,确保能源转型平稳有序、能源保障安全可靠,可以为当前复杂国际形势下的国家能源安全提供强有力的保障。 展开更多
关键词 中国式现代化 新型能源体系 碳达峰碳中和 绿色低碳 能源自给率 油气自给率 “先立后破”
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ESG评级对企业绿色创新的影响——基于沪深A股上市公司的实证研究
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作者 李新英 吴文杰 《东华理工大学学报(社会科学版)》 2024年第5期410-420,共11页
企业绿色创新是实现中国经济绿色转型和高质量发展的关键驱动力,企业环境保护、社会责任和公司治理(ESG)评级对于提升企业绿色创新水平发挥着重要作用。以沪深A股上市公司2009—2022年数据为样本,基于华证指数公布的ESG评级数据,实证检... 企业绿色创新是实现中国经济绿色转型和高质量发展的关键驱动力,企业环境保护、社会责任和公司治理(ESG)评级对于提升企业绿色创新水平发挥着重要作用。以沪深A股上市公司2009—2022年数据为样本,基于华证指数公布的ESG评级数据,实证检验ESG评级水平对企业绿色创新的直接效应和影响机制。研究表明:ESG评级能够显著促进企业绿色创新,替换核心变量、工具变量法等一系列稳健性检验均支持该结论;从ESG评级三个维度看,企业环境保护、社会责任和公司治理均对企业绿色创新具有促进效应;机制分析表明,ESG评级主要通过缓解融资约束、降低代理成本和增加研发投入等渠道促进企业绿色创新;基于企业行业属性、所有权性质和污染程度的异质性分析表明,ESG评级对促进高科技企业、非国有企业和清洁型企业绿色创新更加明显;进一步研究发现,ESG评级对企业绿色创新的激励效应具有持续性。研究丰富了ESG评级与企业绿色创新的相关理论,对我国经济高质量发展的路径选择具有一定的借鉴价值。 展开更多
关键词 ESG评级 企业绿色创新 融资约束 代理成本 研发投入
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亚热带常见室内绿植对甲醛净化效果及生理机制
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作者 张莉 张哿烨 +3 位作者 林健涛 马方园 赵振 易志刚 《亚热带资源与环境学报》 2024年第2期23-30,共8页
为探究室内绿植对不同浓度甲醛净化效果及生理机制,以白鹤芋、花叶万年青、也门铁和麒麟尾为研究对象,采用玻璃箱密闭熏蒸法,设置甲醛浓度分别为2.70,4.53,7.87 mg•m^(-3)共3个处理(每个处理下光照强度均为50μmol•m^(-2)•s^(-1)),测定... 为探究室内绿植对不同浓度甲醛净化效果及生理机制,以白鹤芋、花叶万年青、也门铁和麒麟尾为研究对象,采用玻璃箱密闭熏蒸法,设置甲醛浓度分别为2.70,4.53,7.87 mg•m^(-3)共3个处理(每个处理下光照强度均为50μmol•m^(-2)•s^(-1)),测定不同甲醛浓度下植物甲醛净化速率及生理生化指标。结果表明:1)4种植物均具有净化甲醛能力,且净化速率随甲醛浓度增加显著增加,高甲醛浓度下(7.87 mg•m^(-3))4种植物净化甲醛能力排序为:也门铁(219.81 ng•cm^(-2)•h^(-1))>麒麟尾(197.29 ng•cm^(-2)•h^(-1))>白鹤芋(173.47 ng•cm^(-2)•h^(-1))>花叶万年青(125.15 ng•cm^(-2)•h^(-1))。2)白鹤芋甲醛净化速率与丙二醛、总有机酸含量以及甲醛脱氢酶呈极显著正相关;麒麟尾甲醛净化速率与丙二醛和可溶性糖含量显著负相关。这可能与甲醛脱氢酶和可溶性糖等生理指标与甲醛在植物体内代谢过程密切相关。3)利用隶属函数法对植物叶绿素、丙二醛和可溶性糖含量进行综合分析,结果表明,白鹤芋甲醛抗性最强,花叶万年青抗性最弱。 展开更多
关键词 绿植 甲醛 室内空气 净化速率 生理机制
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PDCA循环对严重创伤患者在急诊绿色通道滞留时长的影响
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作者 吴姝玲 《实用临床医学(江西)》 CAS 2024年第2期74-78,共5页
目的探讨PDCA循环模式对严重创伤患者在急诊绿色通道滞留时长的应用效果。方法选取在急诊绿色通道接受救治的严重创伤患者285例,将2020年就诊的136例设为对照组,2021年就诊的149例设为研究组。对照组按照医院规范化创伤患者抢救流程进... 目的探讨PDCA循环模式对严重创伤患者在急诊绿色通道滞留时长的应用效果。方法选取在急诊绿色通道接受救治的严重创伤患者285例,将2020年就诊的136例设为对照组,2021年就诊的149例设为研究组。对照组按照医院规范化创伤患者抢救流程进行救治,研究组在对照组基础上实施PDCA循环模式,查找流程的不足,并对抢救流程进行持续改进。比较2组患者滞留时长、患者各项抢救措施完成时间及抢救成功率。结果研究组各项抢救措施完成时长,在急诊绿色通道滞留时长均短于对照组(P<0.001);研究组抢救成功率高于对照组(85.23%比75.00%,P<0.001)。结论采用PDCA循环模式能显著缩短严重创伤患者在急诊绿色通道滞留的时长,并能提高抢救效率。 展开更多
关键词 严重创伤 PDCA循环 急诊绿色通道 滞留时长 抢救成功率
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城市绿地乔木固碳能力及碳抵消效果评估
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作者 陈俊华 黎晓平 +5 位作者 李羽洁 慕长龙 谢川 刘一丁 谢天资 简毅 《中国城市林业》 2024年第3期26-33,共8页
定量测算城市绿地乔木固碳能力及抵消碳排放,可为森林城市建设的树种选择和配置提供决策支持。基于高清卫星遥感影像数据和有关经济社会统计数据,结合实地调查,利用生物量模型法测算南充市主城区绿地乔木的固碳能力,探讨群落结构与固碳... 定量测算城市绿地乔木固碳能力及抵消碳排放,可为森林城市建设的树种选择和配置提供决策支持。基于高清卫星遥感影像数据和有关经济社会统计数据,结合实地调查,利用生物量模型法测算南充市主城区绿地乔木的固碳能力,探讨群落结构与固碳能力的影响;分析抵消城市能源CO_(2)排放的成效。结果表明:1)南充市主城区绿化植被中木本植物共269种,分属76科163属。出现频度最高的为桂花、银杏、黄葛树、天竺桂、樟木、樱花等10个树种。2)各类绿地林分平均密度677±425株·hm^(-2),平均胸径21.01±7.15 cm,平均树高8.52±2.06 m。3)各类绿地碳密度按大小为广场用地>附属绿地>公园绿地>防护绿地;固碳速率最大的是附属绿地(2.54 t·hm^(-2)·a^(-1)),最小的是公园绿地(1.64 t·hm^(-2)·a^(-1))。4)南充市主城区绿地乔木2020年碳固定量为9 347 t,能源CO_(2)总排放量为1 016.55万t,绿地乔木大约抵消城市能源0.09%CO_(2)的排放量。最后,建议南充市在城市森林营建过程中,应优先考虑多树种混合使用,并适时调整群落密度以优化林分结构、改善生境条件,促进林木整体水平的生长,进而提高群落的固碳能力;同时尽量采用近自然、较为粗放的经营方式,以减少碳排放。 展开更多
关键词 城市绿地 乔木 碳密度 固碳速率 生物量 南充市
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