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A sustainable and high value-added strategy under lignite and waste silicon powder to construct SiC nanowires for electromagnetic wave absorption
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作者 Wenhao Wang Xiaolin Lan +6 位作者 Haoquan Hao Jingxiang Liu Yong Shuai Qinghe Jing Shouqing Yan Jie Guo Zhijiang Wang 《International Journal of Minerals,Metallurgy and Materials》 2026年第1期347-356,共10页
The electromagnetic wave absorption of silicon carbide nanowires is improved by their uniform and diverse cross-structures.This study introduces a sustainable and high value-added method for synthesizing silicon carbi... The electromagnetic wave absorption of silicon carbide nanowires is improved by their uniform and diverse cross-structures.This study introduces a sustainable and high value-added method for synthesizing silicon carbide nanowires using lignite and waste silicon powder as raw materials through carbothermal reduction.The staggered structure of nanowires promotes the creation of interfacial polarization,impedance matching,and multiple loss mechanisms,leading to enhanced electromagnetic absorption performance.The silicon carbide nanowires demonstrate outstanding electromagnetic absorption capabilities with the minimum reflection loss of-48.09 d B at10.08 GHz and an effective absorption bandwidth(the reflection loss less than-10 d B)ranging from 8.54 to 16.68 GHz with a thickness of 2.17 mm.This research presents an innovative approach for utilizing solid waste in an environmentally friendly manner to produce broadband silicon carbide composite absorbers. 展开更多
关键词 LIGNITE waste silicon powder SiC nanowires electromagnetic wave absorption high value-added
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In-situ alloying interface inducing Zn(002)texture towards stable high-utilization zinc anodes
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作者 Xiancheng Bu Mingzhu Li +2 位作者 Zhexuan Liu Shuquan Liang Guozhao Fang 《Advanced Powder Materials》 2025年第5期122-131,共10页
Aqueous zinc ion batteries(AZIBs)have emerged as a promising energy storage technology due to their high safety and low cost.However,the practical application of AZIBs is severely hindered by unstable Zn anodes especi... Aqueous zinc ion batteries(AZIBs)have emerged as a promising energy storage technology due to their high safety and low cost.However,the practical application of AZIBs is severely hindered by unstable Zn anodes especially under high depth of discharge(DOD).This study proposes an in-situ interface alloying engineering based on Ce^(3+)additive to regulate Zn deposition behaviors,significantly enhancing the cycling stability and reversibility of Zn anodes.Ce^(3+)undergoes in-situ formation of ZnCe alloy on Zn anode interface,inducing preferential deposition of dense Zn(002)plane and effectively mitigating concentration polarization.Zn//Zn symmetric cells with Ce^(3+)electrolytes achieve stable cycling for 3000h at 1mAcm^(−2)and deliver a cumulative capacity of 27 Ah cm^(−2)(5400h)at a high current density of 5mAcm^(−2).Even under a high DOD of 68.4%,it maintains stable cycling for 420h.Full cells with a low Negative/Positive capacity(N/P)ratio of 4.30 and high cathode loading of 10mgcm^(−2)can stably cycle over 1000 cycles at 2Ag^(−1).Furthermore,an 80mAh-level pouch cell with N/P ratio of 4.68 retains 85%capacity after 100 cycles.This article provides new insights into the interfacial engineering for practical AZIBs. 展开更多
关键词 In-situ alloying Oriented crystal plane high utilization high mass loading Aqueous zinc ion batteries
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Healthy function and high valued utilization of edible fungi 被引量:41
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作者 Yanrong Zhang Dawei Wang +5 位作者 Yuetong Chen Tingting Liu Shanshan Zhang Hongxiu Fan Hongcheng Liu Yu Li 《Food Science and Human Wellness》 SCIE 2021年第4期408-420,共13页
Edible fungi are large fungi with high added value that can be utilized as resources.They are rich in high-quality protein,carbohydrate,various vitamins,mineral elements and other nutrients,and are characterized by hi... Edible fungi are large fungi with high added value that can be utilized as resources.They are rich in high-quality protein,carbohydrate,various vitamins,mineral elements and other nutrients,and are characterized by high protein,low sugar,low fat and low cholesterol.In addition,edible fungi contain a variety of bioactive substances,such as polysaccharides,dietary fiber,steroids,polyphenols,and most of these compounds have antioxidant,anti-tumor and other physiological functions.This review comprehensively discusses the bioactive components and functional characteristics of edible fungi(such as antioxidant,anti-aging,hypolipidemic activities,etc.).Then the recent developments and prospect in the high-valued utilization of edible fungi are discussed and summarized.The objective of this review is to improve the understanding of health-promoting properties of edible fungi,and provide reference for the industrial production of edible fungi-based health products. 展开更多
关键词 Edible fungi Functional components Processing and utilization high valued utilization
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Design Strategies for Aqueous Zinc Metal Batteries with High Zinc Utilization: From Metal Anodes to Anode-Free Structures 被引量:7
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作者 Xianfu Zhang Long Zhang +2 位作者 Xinyuan Jia Wen Song Yongchang Liu 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第4期305-349,共45页
Aqueous zinc metal batteries(AZMBs)are promising candidates for next-generation energy storage due to the excellent safety, environmental friendliness, natural abundance, high theoretical specific capacity, and low re... Aqueous zinc metal batteries(AZMBs)are promising candidates for next-generation energy storage due to the excellent safety, environmental friendliness, natural abundance, high theoretical specific capacity, and low redox potential of zinc(Zn) metal. However,several issues such as dendrite formation, hydrogen evolution, corrosion, and passivation of Zn metal anodes cause irreversible loss of the active materials. To solve these issues, researchers often use large amounts of excess Zn to ensure a continuous supply of active materials for Zn anodes. This leads to the ultralow utilization of Zn anodes and squanders the high energy density of AZMBs. Herein, the design strategies for AZMBs with high Zn utilization are discussed in depth, from utilizing thinner Zn foils to constructing anode-free structures with theoretical Zn utilization of 100%, which provides comprehensive guidelines for further research. Representative methods for calculating the depth of discharge of Zn anodes with different structures are first summarized. The reasonable modification strategies of Zn foil anodes, current collectors with pre-deposited Zn, and anode-free aqueous Zn metal batteries(AF-AZMBs) to improve Zn utilization are then detailed. In particular, the working mechanism of AF-AZMBs is systematically introduced. Finally, the challenges and perspectives for constructing high-utilization Zn anodes are presented. 展开更多
关键词 Aqueous zinc metal batteries Zinc anodes high zinc utilization Depth of discharge Anode-free structures
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Mixed State and High Effective Utilization of Pilbara Blending Iron Ore Powder 被引量:8
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作者 CAO Yong-guo WU Sheng-li HAN Hong-liang WANG Hong-wei XUE Fang LIU Xiao-qin 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2011年第9期1-5,共5页
Pilbara blending iron ore powder (PB powder) is blending ores with good and poor quality iron ores, so how to use PB power effectively is a problem. The self-characteristics of PB powder and its single-components we... Pilbara blending iron ore powder (PB powder) is blending ores with good and poor quality iron ores, so how to use PB power effectively is a problem. The self-characteristics of PB powder and its single-components were studied respectively such as the macroscopic properties, microscopic properties, and high-temperature properties the behavior and effect in the sintering were mastered. Then based on the new ore-proportioning idea of iron ores sintering characteristics complementary, the principles on the effective use of PB powder were discussed, and was fur ther validated through the sintering pot test and industrial production. The results show that PB powder is composed of three kinds of iron ore, and the sintering characteristics of different iron ores are obviously discrepant. With the ore-proportioning optimization based on the iron ores sintering characteristics complementary, the proportion of PB iron ore powder can be increased to more than 45 %. 展开更多
关键词 Pilbara blending ore sintering mixed state high effective utilization
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Branched fibrous amidoxime adsorbent with ultrafast adsorption rate and high amidoxime utilization for uranium extraction from seawater 被引量:2
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作者 Wan-Ning Ren Xin-Xin Feng +5 位作者 Yu-Long He Ming-Lei Wang Wan-Feng Hong Hong-Wei Han Jiang-Tao Hu Guo-Zhong Wu 《Nuclear Science and Techniques》 SCIE EI CAS CSCD 2023年第6期79-90,共12页
Direct collection of uranium from low uranium systems via adsorption remains challenging.Fibrous sorbent materials with amidoxime(AO)groups are promising adsorbents for uranium extraction from seawater.However,low AO ... Direct collection of uranium from low uranium systems via adsorption remains challenging.Fibrous sorbent materials with amidoxime(AO)groups are promising adsorbents for uranium extraction from seawater.However,low AO adsorption group utilization remains an issue.We herein fabricated a branched structure containing AO groups on polypropylene/polyethylene spun-laced nonwoven(PP/PE SNW)fibers using grafting polymerization induced by radiation(RIGP)to improve AO utilization.The chemical structures,thermal properties,and surface morphologies of the raw and treated PP/PE SNW fibers were studied.The results show that an adsorptive functional layer with a branching structure was successfully anchored to the fiber surface.The adsorption properties were investigated using batch adsorption experiments in simulated seawater with an initial uranium concentration of 500μg·L^(−1)(pH 4,25℃).The maximum adsorption capacity of the adsorbent material was 137.3 mg·g^(−1)within 24 h;moreover,the uranyl removal reached 96%within 240 min.The adsorbent had an AO utilization rate of 1/3.5 and was stable over a pH range of 4–10,with good selectivity and reusability,demonstrating its potential for seawater uranium extraction. 展开更多
关键词 Radiation graft technology Branching structure high amidoxime utilization Seawater uranium extraction Ultrafast adsorption
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Rice with high K utilization efficiency 被引量:1
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作者 Liu Guodong and Liu Gengling, Inst of Natural Resources and Regional Planning, Chinese Acad of Agri Sci, Beijing 200081, China Marshall Porterfield, Dept of Biological Sci, Univ of Missouri-Rolla, MO 65409, USA 《Chinese Rice Research Newsletter》 2002年第3期26-26,共1页
China is short of potassium resources, it only produces about 30 t of potash fertilizers per year. While China used about 650 t of potash fertilizer in 2000 by importing more than 95% of its potash fertilizers from Ca... China is short of potassium resources, it only produces about 30 t of potash fertilizers per year. While China used about 650 t of potash fertilizer in 2000 by importing more than 95% of its potash fertilizers from Canada or Europe. So, using varieties with high K utilization efficiency was very important. 展开更多
关键词 high Rice with high K utilization efficiency very
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Utilization of Coal Fly Ash for the Production of Glass-ceramics With Unique Performances: A Brief Review 被引量:7
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作者 Shuming Wang Caixing Zhang Jundan Chen 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2014年第12期1208-1212,共5页
Coal fly ash is an industrial by-product generated during the combustion of coal for energy production. Due to the increasing annual consumption of coal power and the serious potential environmental threats of coal fl... Coal fly ash is an industrial by-product generated during the combustion of coal for energy production. Due to the increasing annual consumption of coal power and the serious potential environmental threats of coal fly ash, a considerable amount of research on the utilization of coal fly ash has been undertaken worldwide. Vitrification seems to be one of the most promising options for reusing this industrial waste. This paper presents a short overview of the production of unique high performance glass-ceramics using coal fly ash as a raw material. A detailed description of the methodologies for the synthesis of glass-ceramics from coal fly ash and the principal crystal phases, corresponding property and possible usage of those materials are introduced. Investigations revealed that converting coal fly ash into high performance glass-ceramic materials is a promising new approach to improve the utilization of this industrial by-product. This conversion not only alleviates the problems with disposal but also converts a waste material into a high value-added marketable commodity. 展开更多
关键词 Coal fly ash GLASS-CERAMICS high value-added utilization CAO-AL2O3-SIO2 MGO-AL2O3-SIO2
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Utilizing Dominant Early Maturity Genes of Sterile Line UP-3s in Hybrid Rice Breeding to Avoid High Temperature Season 被引量:1
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作者 Bihu Huang Zongbu Yan 《American Journal of Plant Sciences》 2015年第16期2596-2602,共7页
A new sterile line UP-3s, which carries the Dominant Early Maturity Gene (DEMG), was bred on the farm of University of Arkansas at Pine Bluff (UAPB). UP-3s and two check sterile lines, Jin23-A and Xie-A which do not c... A new sterile line UP-3s, which carries the Dominant Early Maturity Gene (DEMG), was bred on the farm of University of Arkansas at Pine Bluff (UAPB). UP-3s and two check sterile lines, Jin23-A and Xie-A which do not carry the Dominant Early Maturity Gene, were crossed with a group of different maturity restorer lines, PB-1R, PB-5R,PB11, PB-13R, PB-20, PB-21, PB-22R, and PB-23R. Eighteen new hybrid rice combinations of these crosses were then tested at UAPB in 2012 and 2013. The results showed that panicle differentiation (PD) of hybrids from female parent UP-3s (DEMG) crossed with the 8 male parents, were earlier than the hybrids from female parent Jin23-A or Xie-A crossed with the 8 male parents. The PD of these earlier hybrids was before Jun 25 and heading was before July 20. Early PD and heading avoided the high temperature (over 34&degC) period which usually occurs after July 20 in Arkansas. The yields of these earlier maturity hybrids with female parent UP-3s were higher than those of the late maturity hybrids thatwereF1 progeny of sterile lines Jin23-A or Xie-A (these two female parent checks with non-DEMG). These results showed that the DEMG sterile line UP-3s can be adopted in making crosses with later maturity restorer lines to obtain earlier maturity hybrids to avoid the high temperature period in Arkansas. 展开更多
关键词 EARLIER MATURITY DOMINANT Gene STERILE LINE Hybrid Rice utilization BREEDING Avoid high Temperature
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Integrated utilization of low-grade thermal energy in hot coal mine 被引量:1
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作者 Wei-min CHENG Yu-dong QI +1 位作者 Yan-bin YU Gang PAN 《Journal of Coal Science & Engineering(China)》 2013年第1期26-32,共7页
This paper explores the integrated utilization of low-grade thermal energy in hot coal mines, based on analysis of original heating, refrigerating, mine draining, bath draining and air exhaust systems, and in combinat... This paper explores the integrated utilization of low-grade thermal energy in hot coal mines, based on analysis of original heating, refrigerating, mine draining, bath draining and air exhaust systems, and in combination with the actual conditions of Tangkou Coal Mine in Shandong Province. It presents a set of comprehensive and integrated utilization schemes for the various different kinds of low quality heat energy. With heat pumps, the recycling of the low quality heat energy from the drainage, bathing water and the exhaust air can occur in winter, and in summer, there exists condensed heat of the refrigerating system. When in conjunction with solar collectors, the thermal utilization of solar power can be realized for the whole year. The system achieves mine drainage and bathing water purification and recycling, as well as purifying exhaust air by water spraying. It also satisfies the demands of a whole year's bathing heat for the coal mine, with refrigeration in summer, and heating for the ground house and shaft house in winter. It is able to integrate different kinds of low quality heat energy and low emission drainage and dust, and can replace the traditional boiler heating system. Finally, the system reduces conventional energy consumption and the amount of mine water drainage. 展开更多
关键词 low-grade thermal energy high temperature mine integrated utilization energy conservation
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American glabrous rice utilized in breeding of super-high-yielding and good-quality varieties 被引量:2
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作者 LUO Ju Hu Peisong TANG Shaoqing,and HUANG Fasong,CNRRI,Hangzhou 310006,China 《Chinese Rice Research Newsletter》 2000年第2期3-5,共3页
The yield potential of current rice varieties has reached a high plateau and fluc-tuated within a narrow range. Based on the theory and practice of rice breedingfor super-high-yield, we put forward a concept of "... The yield potential of current rice varieties has reached a high plateau and fluc-tuated within a narrow range. Based on the theory and practice of rice breedingfor super-high-yield, we put forward a concept of " Two high and one early",which means high biomass and high efficiency of light energy conversion, as wellas fast growing in the early growth stage. The agronomic characters of 15 U. S 展开更多
关键词 high American glabrous rice utilized in breeding of super-high-yielding and good-quality varieties
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Present Situation and Prospective of Camellia Nut Shells Utilization
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作者 Jinping Zhang Lisong Hu +2 位作者 Zhoulian Wang Menghao Du Xiaohua Yao 《Open Journal of Forestry》 2015年第7期740-748,共9页
With the rapid development of Camellia oleifera industry, more and more Camellia nut shells have been produced, leading to serious environmental pollution problem. This paper reviews the works on the characterization ... With the rapid development of Camellia oleifera industry, more and more Camellia nut shells have been produced, leading to serious environmental pollution problem. This paper reviews the works on the characterization of the physical and chemical properties of Camellia nut shells, active ingredient extraction, its application in chemical production, growing media and animal feed and its properties as a biomass. Based on the review, we proposed a novel all-component high value application strategy to covert camellia nut shells into high value biomasses, which could realize waste recycling and environmental protection. 展开更多
关键词 CAMELLIA NUT Shell Physical and Chemical Property ANALYSIS All-Component high Value utilization utilization Status PROSPECTIVE ANALYSIS
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PHUI-GA: GPU-based efficiency evolutionary algorithm for mining high utility itemsets
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作者 JIANG Haipeng WU Guoqing +3 位作者 SUN Mengdan LI Feng SUN Yunfei FANG Wei 《Journal of Systems Engineering and Electronics》 SCIE CSCD 2024年第4期965-975,共11页
Evolutionary algorithms(EAs)have been used in high utility itemset mining(HUIM)to address the problem of discover-ing high utility itemsets(HUIs)in the exponential search space.EAs have good running and mining perform... Evolutionary algorithms(EAs)have been used in high utility itemset mining(HUIM)to address the problem of discover-ing high utility itemsets(HUIs)in the exponential search space.EAs have good running and mining performance,but they still require huge computational resource and may miss many HUIs.Due to the good combination of EA and graphics processing unit(GPU),we propose a parallel genetic algorithm(GA)based on the platform of GPU for mining HUIM(PHUI-GA).The evolution steps with improvements are performed in central processing unit(CPU)and the CPU intensive steps are sent to GPU to eva-luate with multi-threaded processors.Experiments show that the mining performance of PHUI-GA outperforms the existing EAs.When mining 90%HUIs,the PHUI-GA is up to 188 times better than the existing EAs and up to 36 times better than the CPU parallel approach. 展开更多
关键词 high utility itemset mining(HUIM) graphics process-ing unit(GPU)parallel genetic algorithm(GA) mining perfor-mance
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现代大型化学浆厂的转型与升级:从造纸用浆到多元化高价值产品
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作者 刘苇 刘冬野 +3 位作者 宁恒立 邹学军 刘燕韶 张凤山 《中国造纸》 北大核心 2026年第2期1-9,共9页
为应对造纸行业增长放缓、竞争加剧及环保压力,现代大型化学浆厂正在从传统的造纸用浆生产,扩展到更高价值纤维素产品,而当前高价值纤维素产品大部分依赖国外进口,急需国产化,使得产业向更高价值纤维素产品扩展的必要性尤为突出。本文... 为应对造纸行业增长放缓、竞争加剧及环保压力,现代大型化学浆厂正在从传统的造纸用浆生产,扩展到更高价值纤维素产品,而当前高价值纤维素产品大部分依赖国外进口,急需国产化,使得产业向更高价值纤维素产品扩展的必要性尤为突出。本文系统综述了实现这一转型的四大关键路径:开发高纯度溶解浆作为纺织与化工原料,拓展其能源、医疗等新兴应用;发展保持纤维结构的特种纤维素材料(如绒毛浆、过滤材料),以替代石化产品;开发具备优异性能的微米/纳米纤维素;以及利用制浆副产物生产生物基材料。还进一步分析了溶解浆、特种纤维素材料等核心产品的生产技术、应用现状与转型价值,并对未来通过绿色技术与产品创新驱动产业升级的前景进行了展望。 展开更多
关键词 化学浆 溶解浆 特种纤维素基材料 高值化利用
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“无废城市”试点政策能促进企业高质量发展吗?——基于绿色双元创新视角
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作者 冯莉 刘佩 《生态经济》 北大核心 2026年第1期95-104,共10页
基于绿色双元创新视角,探索“无废城市”试点政策对企业高质量发展的逻辑机理与实现路径。利用2015—2021年我国沪深A股上市公司数据,运用双重差分(DID)的准自然实验估计,从探索式绿色创新和利用式绿色创新两个维度来探究“无废城市”... 基于绿色双元创新视角,探索“无废城市”试点政策对企业高质量发展的逻辑机理与实现路径。利用2015—2021年我国沪深A股上市公司数据,运用双重差分(DID)的准自然实验估计,从探索式绿色创新和利用式绿色创新两个维度来探究“无废城市”试点政策对企业高质量发展的作用机制。研究发现:(1)相对于非政策试点地区的企业而言,“无废城市”试点政策能够显著促进所属地区企业高质量发展;(2)从机制检验结果来看,“无废城市”试点政策通过促进企业“探索式绿色创新”和“利用式绿色创新”进而推动企业实现高质量发展;(3)进一步研究发现,“无废城市”试点政策对中小规模企业、中西部地区企业以及高科技企业的高质量发展促进作用更显著。研究结果为“十四五”期间“无废城市”试点政策推广,激发企业创新活力,促进企业高质量发展提供了理论依据和现实参考。 展开更多
关键词 “无废城市” 探索式绿色创新 利用式绿色创新 企业高质量发展
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中深层油藏CCUS示范工程开发关键技术研究与实践
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作者 毛振强 樊超 +3 位作者 刘赛军 杨志凯 高同 王圆圆 《油气藏评价与开发》 北大核心 2026年第1期118-127,共10页
CCUS(碳捕集、利用与封存)技术可实现提高采收率增油创效和减碳封碳绿色发展的战略目的,在技术迅速发展的同时也出现了部分问题和难点,制约了技术的推广应用。该研究依托中国首个百万吨级CCUS示范项目,针对油藏开发矛盾和技术难点,将理... CCUS(碳捕集、利用与封存)技术可实现提高采收率增油创效和减碳封碳绿色发展的战略目的,在技术迅速发展的同时也出现了部分问题和难点,制约了技术的推广应用。该研究依托中国首个百万吨级CCUS示范项目,针对油藏开发矛盾和技术难点,将理论研究、室内实验与矿场实践结合,基于混相驱的理论指导油藏开发和矿场问题剖析,以此进一步完善开发理论和技术思路,总结提炼了中深层低渗透油藏高压混相驱的关键技术及其理论内涵。示范工程贯彻“CO_(2)全程高压混相驱”的理念,采取“连续注入保混相、油水联动建驱替、注采协同扩波及”的方式提能量、扩波及,形成了差异补能高压混相、均衡驱替、三相前缘调控、气驱监测、高效封存等关键技术,油藏开发认识和CO_(2)驱油关键技术逐步提升完善,支撑示范工程油藏开发取得良好效果。示范区立足探索新技术、破解技术难题、提升CO_(2)驱油理论认识,开展百万吨级CCUS矿场试验,13个单元中10个开发单元已达到混相,CO_(2)气驱见效率79.3%,井组气窜率控制在7.1%,单井产油量由1.8 t/d上升至3.2 t/d,气油比控制在300 m^(3)/m^(3)以内,气驱换油率逐步提升至0.21 t/t(每吨CO_(2)注入油藏后可换得的原油量),并呈逐步提升趋势,回注气阶段封存率达到97.1%,示范区CO_(2)高效驱替的理论认识和技术实践对同类低渗透油藏混相驱具有较大的指导和借鉴意义,对CCUS技术进步和扩大应用做了有效的探索。 展开更多
关键词 CCUS(碳捕集、利用与封存) 高压混相 低渗透油藏 油藏工程 CO_(2)封存
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双因素扰动下高铁车站到发线运用调整优化
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作者 张英贵 周婧盈 王宇航 《铁道科学与工程学报》 北大核心 2026年第1期14-26,共13页
到发线运用是高速铁路车站作业组织的重要组成部分。列车晚点或到发线故障会给到发线运用计划的执行带来不同程度的影响,亟需高效合理地对高铁车站到发线运用计划进行调整。以进路“一次占用分段解锁”联锁机制为前提条件,兼顾列车晚点... 到发线运用是高速铁路车站作业组织的重要组成部分。列车晚点或到发线故障会给到发线运用计划的执行带来不同程度的影响,亟需高效合理地对高铁车站到发线运用计划进行调整。以进路“一次占用分段解锁”联锁机制为前提条件,兼顾列车晚点、到发线故障等双因素扰动工况,统筹考虑到发线与进路连接关系、车底接续使用、到发线及进路等站内设备资源占用安全间隔、列车停站作业时间、设备资源和列车占用的唯一性、到发线故障及调整前置性条件等约束,以最小化列车总晚点程度和到发线占用总波动性为优化目标,构建双因素扰动下高铁车站到发线运用调整优化非线性整数规划模型,通过线性化处理将其转化为相应的整数线性规划模型,并采用商业求解器Gurobi进行求解,最后基于我国某高铁车站及列车运行参数数据进行实证分析。研究结果表明,所提方法可以对列车晚点、到发线故障等单、双因素扰动下高铁车站到发线运用计划进行高效调整,满足高铁车站到发线运用调整优化的时效性和安全性要求。相较于到发线占用总波动性,模型的目标函数受列车总晚点程度的波动影响更为显著,调度员面对双因素扰动时应更加注重列车到发时刻的调整,以尽快恢复列车正点运行,降低对车站正常作业秩序的干扰。所提方法能够为高铁车站到发线运用调整决策提供技术支持。 展开更多
关键词 高铁车站 到发线运用调整 分段解锁 整数规划 双因素扰动
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流域水库群运行水位优化设计与多目标联合调控
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作者 郭生练 谢雨祚 钟斯睿 《水利学报》 北大核心 2026年第1期103-113,167,共12页
水利水电工程兴建运行改变了下游河流的水文情势,洪水时空分布发生了显著变化。基于单站天然资料系列推求的水库建设期设计洪水及汛限水位,无法适应水库运行期来水来沙变化实况,致使水库汛期弃水与汛后无水可蓄,防洪与兴利矛盾凸显。本... 水利水电工程兴建运行改变了下游河流的水文情势,洪水时空分布发生了显著变化。基于单站天然资料系列推求的水库建设期设计洪水及汛限水位,无法适应水库运行期来水来沙变化实况,致使水库汛期弃水与汛后无水可蓄,防洪与兴利矛盾凸显。本文突破传统“单库设计—静态运用”的局限,从“规划设计—联合运用—优化调度”层层递进的角度,综述水库运行期设计洪水计算理论和方法,归纳水库群防洪库容联合设计及互补等效关系研究进展,论述流域水库群多目标联合调度模型与求解方法,提出需要继续深入研究的科学技术问题。建议以洪水资源化利用为目标,强化流域水库群运行水位优化设计与多目标联合调控的研究及应用。 展开更多
关键词 水库群 设计洪水 汛限水位 优化设计 联合调度 洪水资源 高效利用
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论全球引资竞争加剧下中国FDI的稳量提质
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作者 范鹏辉 张天煦 《开放导报》 2026年第1期46-56,共11页
“十四五”时期,我国利用外资整体维持了全球重要投资目的地的地位,在扩大制度型开放、优化营商环境与提升外资质量方面取得了显著成效。“十五五”时期,全球直接投资增长乏力、国际引资竞争加剧与科技竞争激烈等新挑战对我国利用外资... “十四五”时期,我国利用外资整体维持了全球重要投资目的地的地位,在扩大制度型开放、优化营商环境与提升外资质量方面取得了显著成效。“十五五”时期,全球直接投资增长乏力、国际引资竞争加剧与科技竞争激烈等新挑战对我国利用外资提出了新要求,并购投资、利润再投资与服务业发展等方面也为我国利用外资带来新机遇。利用外资工作需在“稳量提质”的总体要求下,推动开放策略从“边境准入”向“边境后规制”跨越,系统处理好与建设现代化产业体系、发展新质生产力、建设强大国内市场、促进区域经济发展、拓展国际循环之间的关系。为此,应进一步扩大外商投资市场准入范围、营造国际化法治化营商环境、完善覆盖投资全生命周期的促进与服务保障体系、支持各类开放平台开展特色化创新,持续塑造吸引和利用外资的新优势,更好发挥外资推动我国高质量发展的积极作用。 展开更多
关键词 利用外资 制度型开放 营商环境 投资促进 高质量发展
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木质素催化解聚及其催化剂的研究进展
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作者 解金旋 李强 +2 位作者 黄美玥 赵云鹏 曹景沛 《化工进展》 北大核心 2026年第2期852-864,共13页
木质素中独特的芳香结构使其成为制备小分子芳香族化合物和烷烃化学品的优良原料。木质素结构中富含C—O键,通过断裂这些C—O键能够获得酚类、醇类和环烷烃等有机化学品。在木质素解聚过程中,催化剂的存在能使反应条件更为温和,目标产... 木质素中独特的芳香结构使其成为制备小分子芳香族化合物和烷烃化学品的优良原料。木质素结构中富含C—O键,通过断裂这些C—O键能够获得酚类、醇类和环烷烃等有机化学品。在木质素解聚过程中,催化剂的存在能使反应条件更为温和,目标产物的选择性更高,反应的成本更具经济性。选择合适的载体和活性金属可合成高活性和高稳定性的催化剂,助力木质素的解聚。本文介绍了木质素催化解聚的研究进展,总结了广泛使用的解聚路径,并从活性金属和载体两方面阐述了木质素催化解聚过程中常用的催化剂,归纳了不同活性金属和载体的优缺点及适用体系。同时,探讨了木质素在催化剂上的解聚机制。进一步对木质素催化解聚催化剂未来的研究方向进行了展望,指出制备低成本和高稳定性的碳负载金属催化剂将成为研究重点,这类催化剂有望显著促进木质素的高值化利用。 展开更多
关键词 生物质 木质素 催化剂载体 催化剂 高值化利用
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