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China’s policy framework for carbon capture, utilization and storage: Review, analysis, and outlook

《能源前沿(英文)》 2023年 第17卷 第3期   页码 400-411 doi: 10.1007/s11708-023-0862-z

摘要: Carbon capture, utilization, and storage (CCUS) is estimated to contribute substantial CO2 emission reduction to carbon neutrality in China. There is yet a large gap between such enormous demand and the current capacity, and thus a sound enabling environment with sufficient policy support is imperative for CCUS development. This study reviewed 59 CCUS-related policy documents issued by the Chinese government as of July 2022, and found that a supporting policy framework for CCUS is taking embryonic form in China. More than ten departments of the central government have involved CCUS in their policies, of which the State Council, the National Development and Reform Commission (NDRC), the Ministry of Science and Technology (MOST), and the Ministry of Ecological Environment (MEE) have given the greatest attention with different focuses. Specific policy terms are further analyzed following the method of content analysis and categorized into supply-, environment- and demand-type policies. The results indicate that supply-type policies are unbalanced in policy objectives, as policy terms on technology research and demonstration greatly outnumber those on other objectives, and the attention to weak links and industrial sectors is far from sufficient. Environment-type policies, especially legislations, standards, and incentives, are inadequate in pertinence and operability. Demand-type policies are absent in the current policy system but is essential to drive the demand for the CCUS technology in domestic and foreign markets. To meet the reduction demand of China’s carbon neutral goal, policies need to be tailored according to needs of each specific technology and implemented in an orderly manner with well-balanced use on multiple objectives.

关键词: carbon capture     utilization     and storage (CCUS)     policy     content analysis     China    

Molecular regulation and genetic improvement of seed oil content in

Wei HUA,Jing LIU,Hanzhong WANG

《农业科学与工程前沿(英文)》 2016年 第3卷 第3期   页码 186-194 doi: 10.15302/J-FASE-2016107

摘要: As an important oil crop and a potential bioenergy crop, L. is becoming a model plant for basic research on seed lipid biosynthesis as well as seed oil content, which has always been the key breeding objective. In this review, we present current progress in understanding of the regulation of oil content in , including genetics, biosynthesis pathway, transcriptional regulation, maternal effects and QTL analysis. Furthermore, the history of breeding for high oil content in is summarized and the progress in breeding ultra-high oil content lines is described. Finally, prospects for breeding high oil content cultivars are outlined.

关键词: breeding     maternal effects     oilseed rape     QTL    

Comparison of analytical procedures for measuring phosphorus content of animal manures in China

null

《农业科学与工程前沿(英文)》 2019年 第6卷 第4期   页码 431-440 doi: 10.15302/J-FASE-2019279

摘要:

The concentration and components of manure phosphorus (P) are key factors determining potential P bioavailability and runoff. The distribution of P forms in swine, poultry and cattle manures collected from intensive and extensive production systems in several areas of China was investigated with sequential fractionation and a simplified two-step (NaHCO -NaOH/EDTA) procedures. The mean total P concentration, determined by the sequential fractionation procedure of intensive swine, poultry and cattle manure, expressed as g·kg , was 14.9, 13.4 and 5.8 g·kg , respectively, and 4.4 g·kg in extensive cattle manure. In intensive swine, poultry and cattle manure about 73%, 74% and 79% of total P, respectively, was bioavailable (i.e., P extracted by H O and NaHCO ) and 78% in extensive cattle manure. The results indicated the relative environmental risk, from high to low, of swine, poultry and cattle manure. There is considerable regional variation in animal manure P across China, which needs to be considered when developing manure management strategies.

关键词: diet phosphorus     manure phosphorus     sequential P fractionation    

Predicting lateral displacement caused by seismic liquefaction and performing parametric sensitivity analysis: Considering cumulative absolute velocity and fine content

Nima PIRHADI, Xiaowei TANG, Qing YANG, Afshin ASADI, Hazem Samih MOHAMED

《结构与土木工程前沿(英文)》 2021年 第15卷 第2期   页码 506-519 doi: 10.1007/s11709-021-0677-0

摘要: Lateral displacement due to liquefaction ( ) is the most destructive effect of earthquakes in saturated loose or semi-loose sandy soil. Among all earthquake parameters, the standardized cumulative absolute velocity ( ) exhibits the largest correlation with increasing pore water pressure and liquefaction. Furthermore, the complex effect o fine content( ) at different values has been studied and demonstrated. Nevertheless, these two contexts have not been entered into empirical and semi-empirical models to predict This study bridges this gap by adding to the data set and developing two artificial neural network (ANN) models. The first model is based on the entire range of the parameters, whereas the second model is based on the samples with values that are less than the 28% critical value. The results demonstrate the higher accuracy of the second model that is developed even with less data. Additionally, according to the uncertainties in the geotechnical and earthquake parameters, sensitivity analysis was performed via Monte Carlo simulation (MCS) using the second developed ANN model that exhibited higher accuracy. The results demonstrated the significant influence of the uncertainties of earthquake parameters on predicting

关键词: lateral spreading displacement     cumulative absolute velocity     fine content     artificial neural network     sensitivity analysis     Monte Carlo simulation    

Chloride binding and time-dependent surface chloride content models for fly ash concrete

S. MUTHULINGAM,B. N. RAO

《结构与土木工程前沿(英文)》 2016年 第10卷 第1期   页码 112-120 doi: 10.1007/s11709-015-0322-x

摘要: Corrosion of embedded rebars is a classical deterioration mechanism of reinforced concrete structures exposed to chloride environments. Such environments can be attributed to the presence of seawater, deicing or sea-salts, which have high concentrations of chloride ion. Chloride ingress into concrete, essential for inducing rebar corrosion, is a complex interaction between many physical and chemical processes. The current study proposes two chloride ingress parameter models for fly ash concrete, namely: 1) surface chloride content under tidal exposure condition; and 2) chloride binding. First, inconsistencies in surface chloride content and chloride binding models reported in literature, due to them not being in line with past research studies, are pointed out. Secondly, to avoid such inconsistencies, surface chloride content and chloride binding models for fly ash concrete are proposed based upon the experimental work done by other researchers. It is observed that, proposed models are simple, consistent and in line with past research studies reported in literature.

关键词: binding isotherms     chloride ingress     concrete     fly ash     surface chloride content    

非饱和土坡危险含水量分析

张士林,王冬梅,李根华

《中国工程科学》 2004年 第6卷 第5期   页码 71-75

摘要:

介绍了由于雨水入渗,使非饱和土坡的含水量发生变化,而含水量正是与基质吸力有着直接的联系;同时通过分析条件水压力和非饱和土的容重与含水量的变化规律,得到基质吸力、饱和度、非饱和土容重与整个土坡的稳定性规律,也就是安全系数与含水量分布的规律。得出当土坡处于危险状况下的含水量分布,即当土坡中的含水量达到危险含水量时,土坡处于危险状态。因此,通过监测土坡的含水量的变化,获得土坡的稳定信息,为生产和安全提供保障。

关键词: 非饱和土     稳定性分析     降雨入渗     体积含水量     基质吸力    

Microbial fuel cell with high content solid wastes as substrates: a review

Qingliang Zhao,Hang Yu,Weixian Zhang,Felix Tetteh Kabutey,Junqiu Jiang,Yunshu Zhang,Kun Wang,Jing Ding

《环境科学与工程前沿(英文)》 2017年 第11卷 第2期 doi: 10.1007/s11783-017-0918-6

摘要: Fundamentals and configuration design of MFCs fueled by HCSW were reviewed. HCSWs including sewage sludge, biomass and biowaste treated in MFCs were summarized. HCSW based MFCs technologies covered the types of sediment, soil, wetland and plant. Activated sludge process and composting could be coupled with HCSW-MFCs. HCSW-MFCs could be applied in bioremediation and biosensing. With the increasing concern about the serious global energy crisis and high energy consumption during high content solid wastes (HCSWs) treatment, microbial fuel cell (MFC) has been recognized as a promising resource utilization approach for HCSW stabilization with simultaneous electrical energy recovery. In contrast to the conventional HCSW stabilization processes, MFC has its unique advantages such as direct bio-energy conversion in a single step and mild reaction conditions (viz., ambient temperature, normal pressure, and neutral pH). This review mainly introduces some important aspects of electricity generation from HCSW and its stabilization in MFC, focusing on: (1) MFCs with different fundamentals and configurations designed and constructed to produce electricity from HCSW; (2) performance of wastes degradation and electricity generation; (3) prospect and deficiency posed by MFCs with HCSW as substrates. To date, the major drawback of MFCs fueled by HCSW is the lower power output than those using simple substrates. HCSW hydrolysis and decomposition would be a major tool to improve the performance of MFCs. The optimization of parameters is needed to push the progress of MFCs with HCSW as fuel.

关键词: Microbial fuel cell     High content solid wastes     Substrate     Bioremediation     Biosensor    

国土资源信息化:从内容管理到知识管理

郭仁忠

《中国工程科学》 2009年 第11卷 第10期   页码 67-71

摘要:

首先回顾了国土资源信息化的发展进程,综合评述了相关阶段的特征,然后,在分析国土资源信息化应用特点的基础上,阐述了知识管理与国土资源信息化的关系,指出知识管理是国土资源信息化新的发展阶段和发展方向,最后,初步规划了国土资源知识工程建设的主要任务。

关键词: 国土资源     信息化     内容管理     知识管理    

Lignin-based polymer with high phenolic hydroxyl group content prepared by the alkyl chain bridging method

《化学科学与工程前沿(英文)》 2023年 第17卷 第8期   页码 1075-1084 doi: 10.1007/s11705-022-2272-x

摘要: Inspired by the importance of the phenolic group to the electron transporting property of hole transport materials, phenolic hydroxyl groups were introduced in lignosulfonate (LS) via the alkyl chain bridging method to prepare phenolated-lignosulfonate (PLS). The results showed that the phenolic group was boosted from 0.81 mmol∙g–1 of LS to 1.19 mmol∙g–1 of PLS. The electrochemical property results showed two oxidation peaks in the cyclic voltammogram (CV) curve of PLS, and the oxidation potential of the PLS-modified electrode decreased by 0.5 eV compared with that of LS. This result indicates that PLS is more easily oxidized than LS. Based on the excellent electron transporting property of PLS, PLS was applied as a dopant in poly(3,4-ethylenedioxythiophene) (PEDOT, called PEDOT:PLSs). PLS showed excellent dispersion properties for PEDOT. Moreover, the transmittance measurement results showed that the transmittance of PEDOT:PLSs exceeded 85% in the range of 300–800 nm. The CV results showed that the energy levels of PEDOT:PLSs could be flexibly adjusted by PLS amounts. The results indicate that the phenolic hydroxyl group of lignin can be easily boosted by the alkyl chain bridging method, and phenolated lignin-based polymers may have promising potential as dopants of PEDOT to produce hole transporting materials for different organic photovoltaic devices.

关键词: lignosulfonate     phenolic group     PEDOT:PLS     hole extract layer     energy level    

Effect of natural pozzolan content on the properties of engineered cementitious composites as repair

Said CHOUCHA, Amar BENYAHIA, Mohamed GHRICI, Mohamed Said MANSOUR

《结构与土木工程前沿(英文)》 2018年 第12卷 第3期   页码 261-269 doi: 10.1007/s11709-017-0394-x

摘要:

In order to determine the effect of Natural Pozzolan (NP) content on the mechanical properties and durability characteristics on Engineered Cementitious Composites (ECC) as repair material. This study focused on the evaluation of the most factors influencing compatibility between the repair material and the base concrete including mechanicals properties such as, compressive and flexural strengths, elastic modulus, capillary absorption and drying shrinkage. The experimental results showed that natural pozzolan reduces the compressive strength and the flexural strength of ECC at all ages. The elastic modulus of ECC was remarkably lower than that of normal-strength concrete. This lower Young’s modulus is desirable for repair concrete, because it prevents the stresses induced by restrained shrinkage. In addition, the incorporation of high-volume natural pozzolan decreases significantly the coefficient of capillary absorption at long term and increases the drying shrinkage. Generally, based on the results obtained in the present experimental investigation, ECC can be used effectively as an overlay material over existing parent concrete.

关键词: natural pozzolan     engineered cementitious composites     mechanical strengths     elastic modulus     capillary absorption     drying shrinkage    

一种快速均匀的采用尺度不变特征变换描述符进行基于内容的卫星图像配准方法 Article

Hamed BOZORGI, Ali JAFARI

《信息与电子工程前沿(英文)》 2017年 第18卷 第8期   页码 1108-1116 doi: 10.1631/FITEE.1500295

摘要: 另外,SIFT算法提取的本地特征具有较高维度,导致计算过程耗时过长以及对保存相关信息的储存空间要求过高,而这两点也是在基于内容图像检索(content-based image retrieval, CBIR将参考数据库中每副图像的本地特征单独分为一类后,采用线性判别分析(linear discriminant analysis, LDA)方法将本地SIFT特征转变为全局特征,同时不为降低特征空间的维度。

关键词: 基于内容的卫星图像配准;特征点分布;图像配准;线性判别准则;遥感;尺度不变特征变换    

智能多媒体内容设计在阿里巴巴的应用 Special Feature on Intelligent Design

Kui-long LIU, Wei LI, Chang-yuan YANG, Guang YANG

《信息与电子工程前沿(英文)》 2019年 第20卷 第12期   页码 1657-1664 doi: 10.1631/FITEE.1900580

摘要: 多媒体内容是阿里巴巴业务生态中必不可少的组成部分,且需求量巨大。多媒体内容生产通常具有较高技术及资金要求。随着人工智能技术近年飞速发展,众多辅助多媒体内容生产的工具应运而生,人工智能技术与多媒体内容设计的结合在阿里巴巴业务生态中的应用愈加广泛,涉及领域包括辅助设计、平面设计、视频生成和页面制造。本文首先介绍了在阿里巴巴业务生态中人工智能辅助设计工具的通用处理流程,然后在上述4个应用领域分别选择一个代表性工具着重介绍。通过这些工具的使用,多媒体内容设计结合人工智能带来的价值在业务中得到很好验证,体现了人工智能技术在促进多媒体内容生产中起到的巨大作用,也预示了其广泛应用前景。

关键词: 多媒体内容;阿里巴巴;人工智能;设计;业务应用    

内容与地址双驱动网络研究

杨鹏,刘旋,李幼平

《中国工程科学》 2022年 第24卷 第4期   页码 22-31 doi: 10.15302/J-SSCAE-2022.04.003

摘要: :#252424;">次结构content>content style="color:#252424;">(内容驱动播存网络)content>content> content style="color:#252424;">单向辐射传输contentcontent> content style="color:#252424;">一对一content"color:#252424;">以地址为中心content>content style="color:#252424;">(主机溯源)contentcontent>content style="color:#252424;">(内容甄别)content>

关键词: 地址驱动     以内容为中心     互联网体系结构     双驱动网络     统一内容标签    

基于人工智能的内容安全发展战略研究

朱世强,王永恒

《中国工程科学》 2021年 第23卷 第3期   页码 67-74 doi: 10.15302/J-SSCAE-2021.03.004

摘要:

内容安全是指对信息内容的保护,以及信息内容符合政治、法律、道德层次的要求。人工智能的发展对内容安全产生了非常重要的影响。本文从基于人工智能的内容安全重大战略需求出发,梳理了国内外的研究现状与发展趋势,凝练了基于人工智能的内容安全的关键技术问题。研究提出,按照三步走的策略构建世界领先的基于人工智能的内容安全体系;在对抗性机器学习、可解释人工智能、混合增强智能、知识驱动的内容安全等方面开展技术创新突破,同时应注重政策法规和监管机制建设;建设面向内容攻防的网络靶场、面向舆情攻防的大规模社会系统模拟装置等内容安全重大基础设施。

关键词: 人工智能,内容安全,体系建设    

Effect of Fe content on FeMn catalysts for light alkenes synthesis

ZHOU Jun, CHU Wei, ZHANG Hui, XU Huiyuan, ZHANG Tao

《化学科学与工程前沿(英文)》 2008年 第2卷 第3期   页码 315-318 doi: 10.1007/s11705-008-0050-z

摘要: The effect of Fe content on FeMn/MgO catalysts for light alkenes synthesis through CO hydrogenation was investigated. Catalysts were prepared by a conventional co-impregnation method, characterized using BET, X-ray powder diffraction (XRD) and Temperature-programmed reduction (H-TPR) techniques. High activity was obtained over the catalyst with 9 wt-% Fe content, over which CO conversion and the selectivity of C–C reached 91.36% and 58.48%, respectively. With the increase of Fe content, both the conversion and the selectivity were improved within a certain range and then decreased. The results show that the surface area of the catalyst played an important role in the catalytic reaction. With the increase of Fe loading, the interaction action between Fe and Mn was enhanced and FeMn solid solution was formed.

关键词: conventional co-impregnation     increase     conversion     loading     H-TPR    

标题 作者 时间 类型 操作

China’s policy framework for carbon capture, utilization and storage: Review, analysis, and outlook

期刊论文

Molecular regulation and genetic improvement of seed oil content in

Wei HUA,Jing LIU,Hanzhong WANG

期刊论文

Comparison of analytical procedures for measuring phosphorus content of animal manures in China

null

期刊论文

Predicting lateral displacement caused by seismic liquefaction and performing parametric sensitivity analysis: Considering cumulative absolute velocity and fine content

Nima PIRHADI, Xiaowei TANG, Qing YANG, Afshin ASADI, Hazem Samih MOHAMED

期刊论文

Chloride binding and time-dependent surface chloride content models for fly ash concrete

S. MUTHULINGAM,B. N. RAO

期刊论文

非饱和土坡危险含水量分析

张士林,王冬梅,李根华

期刊论文

Microbial fuel cell with high content solid wastes as substrates: a review

Qingliang Zhao,Hang Yu,Weixian Zhang,Felix Tetteh Kabutey,Junqiu Jiang,Yunshu Zhang,Kun Wang,Jing Ding

期刊论文

国土资源信息化:从内容管理到知识管理

郭仁忠

期刊论文

Lignin-based polymer with high phenolic hydroxyl group content prepared by the alkyl chain bridging method

期刊论文

Effect of natural pozzolan content on the properties of engineered cementitious composites as repair

Said CHOUCHA, Amar BENYAHIA, Mohamed GHRICI, Mohamed Said MANSOUR

期刊论文

一种快速均匀的采用尺度不变特征变换描述符进行基于内容的卫星图像配准方法

Hamed BOZORGI, Ali JAFARI

期刊论文

智能多媒体内容设计在阿里巴巴的应用

Kui-long LIU, Wei LI, Chang-yuan YANG, Guang YANG

期刊论文

内容与地址双驱动网络研究

杨鹏,刘旋,李幼平

期刊论文

基于人工智能的内容安全发展战略研究

朱世强,王永恒

期刊论文

Effect of Fe content on FeMn catalysts for light alkenes synthesis

ZHOU Jun, CHU Wei, ZHANG Hui, XU Huiyuan, ZHANG Tao

期刊论文