Results 1 to 10 of about 34,310 (205)

基于空间模型的中国碳交易减排效果分析 [PDF]

open access: yes全球能源互联网, 2021
碳排放权交易(碳交易)是推动二氧化碳减排的重要手段,基于空间特征的研究有利于全面、准确地理解碳排放权交易市场的减排效果。基于中国1999—2017年285个地级市的平衡面板数据,通过空间双重差分模型探究碳交易试点的减排效果及传导机制。研究发现:第一,碳交易不但能有效促进本地二氧化碳减排,而且对周边地区还存在一定溢出效应;第二,碳交易可以推动试点地区与周边地区经济增长,同时驱动二氧化碳减排;第三,碳交易在工业规模更大的地区有更好的二氧化减排效果及溢出效应;第四 ...
李若男, 杨力俊, 赵晓丽
doaj   +1 more source

Effect of stacking sequence on mechanical and moisture absorption properties of abaca-kenaf-carbon fiber reinforced hybrid composites

open access: yesJournal of Natural Fibers, 2022
Hybrid composite materials containing natural fibers are replacing conventional materials for automobile, aerospace and sports goods structural applications.
M. Venkatasudhahar   +2 more
doaj   +1 more source

2 ℃/1.5 ℃温控目标下生物质能结合碳捕集与封存技术(BECCS) [PDF]

open access: yes全球能源互联网, 2019
工业化以来,全球气候变暖对自然和人类系统的影响日益显著。《巴黎协定》提出将全球升温限制在2 ℃以内,并努力将全球升温控制在1.5 ℃内,以避免气候变化造成更严重的影响。生物质能碳捕集与封存技术是未来有望将全球升温稳定在低水平的关键技术。梳理了实现温升目标2 ℃/ 1.5 ℃下BECCS可能贡献的最新研究进展,对BECCS发展的四个重要不确定因素即资源不确定性、技术不确定性、经济影响不确定性以及社会和生态影响不确定性进行了分析。在此基础上初步分析了BECCS在未来电力能源系统中的可能作用 ...
常世彦, 郑丁乾, 付萌
doaj   +1 more source

Carbon reduction potential and strategic path of county space under dual carbon targets: Based on analysis and allocation of carbon emission rights in Zhejiang province(双碳目标下县域空间的减碳潜力与策略路径——基于浙江省碳排放权的解析与分配)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2023
在双碳目标的驱动下,碳排放权愈发成为重要的地区发展权,在县域层面落实落位碳额分配是我国深入减碳的焦点,浙江省将在“十四五”时期进入局部率先达峰的二级减碳阶段。为分解落实我国自主减碳目标,采用熵权法构建以公平性、效率性、可持续性为原则的碳排放权分配模型,基于碳排放空间与减碳潜力测算方法,得到2017—2030年浙江省89个县(市、区)的碳排放权分配、碳排放空间分类和减碳潜力分级。结果表明,碳排放权分配在县域层级存在空间差异性,在省域层级存在空间平衡性;碳排放空间分类呈“南余北赤”模式;减碳潜力分级表现为 ...
周从越(ZHOU Congyue)   +3 more
doaj   +1 more source

基于清单编制法的中国碳市场免费碳配额分布平衡分析 [PDF]

open access: yes全球能源互联网, 2022
生态环境部于2020年印发了发电行业免费碳配额设定与分配实施方案,为控排企业免费碳配额核算提供了标准。目前全国碳市场已启动运行,此前对中国免费碳配额分配的分析均引用了大量假设,且计算精度有限。为此,编制了全国火电厂级精细度的碳清单,自下而上地辨识全国火电厂级煤耗、产能参数,并根据发电行业免费碳配额标准,计算以2020年为基准的碳清单,以此研究目前碳市场规则下免费碳配额在火电行业中的分配平衡性,对于分析现阶段碳市场运行状况、评价碳市场对电力系统的经济影响具有参考价值。分析结果表明 ...
赵宏兴   +5 more
doaj   +1 more source

福州市不同种植年限茉莉花园土壤碳、氮、磷及生态化学计量比特征

open access: yesShuitu Baochi Xuebao, 2022
为了阐明种植年限对茉莉花园土壤碳(C)、氮(N)、磷(P)及其生态化学计量特征的影响, 以福州市种植年限约为3(J-3), 10(J-10), 15(J-15), 30(J-30), >40(J-40)年的茉莉花园为研究对象, 对土壤C、N、P与生态化学计量比及其影响因子进行了测定与分析。结果表明: (1)与J-3相比, 随着种植年限的增加J-10、J-30、J-40土壤容重显著下降29%, 19%和18%(P < 0.05), J-10、J-15、J-30、J-40土壤黏粒含量分别显著降低26 ...
黑杰   +10 more
doaj  

Study on Urate-Lowering Effects of Sugarcane Polyphenol in Hyperuricemic Rats(甘蔗多酚对高尿酸血症大鼠的降尿酸作用研究) [PDF]

open access: yesShipin kexue jishu xuebao
Increasing dietary intake of bioactive substances with urate-lowering activity to prevent or alleviate hyperuricemia is a current research hotspot in the functional food field.
LI Kexin(李柯欣)   +6 more
doaj   +1 more source

Comprehensive framework for assessing and optimizing existing research networks

open access: yesConservation Biology, EarlyView.
Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East   +2 more
wiley   +1 more source

Decarbonization and the Rescaling of Water–Energy Bargaining: How Renewable Expansion Is Reshaping Iran–Iraq–Türkiye Transboundary Water Politics

open access: yesWorld Water Policy, Volume 12, Issue 4, November 2026.
ABSTRACT This article examines how renewable‐energy expansion is changing water–energy bargaining among Iran, Iraq, and Türkiye in the Tigris–Euphrates basin. Much of the existing literature on transboundary water politics focuses on territorial control, upstream–downstream power asymmetries, legal rules, and hydro‐hegemony but gives less attention to ...
Umud Shokri
wiley   +1 more source

Lignin‐Derived Carbon Quantum Dots as Hole‐Trapping Promoters in LCDs/Bi‐MOF/ZIS With S‐Scheme Heterojunction for Efficient Photocatalytic Hydrogen Peroxide Production in Pure Water

open access: yesRare Metals, Volume 45, Issue 10, October 2026.
ABSTRACT Photocatalytic hydrogen peroxide (H2O2) production from water and oxygen driven by solar energy represents a highly promising green and sustainable strategy. Herein, lignin‐derived carbon quantum dots (LCDs) were strategically introduced at the heterojunction between a Bi‐based metal organic framework (Bi‐MOF) and ZnIn2S4 (ZIS).
Wanpeng Sun   +8 more
wiley   +1 more source

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