首页 > 最新文献

工程技术最新文献

英文 中文
IF:
Twenty-eight years of GM Food and feed without harm: why not accept them? 转基因食品和饲料二十八年无危害:为什么不接受它们?
IF 3.9 2区 农林科学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2024-12-31 Epub Date: 2024-03-12 DOI: 10.1080/21645698.2024.2305944
Richard E Goodman

Since the first genetically engineered or modified crops or organisms (GMO) were approved for commercial production in 1995, no new GMO has been proven to be a hazard or cause harm to human consumers. These modifications have improved crop efficiency, reduced losses to insect pests, reduced losses to viral and microbial plant pathogens and improved drought tolerance. A few have focused on nutritional improvements producing beta carotene in Golden Rice. Regulators in the United States and countries signing the CODEX Alimentarius and Cartagena Biosafety agreements have evaluated human and animal food safety considering potential risks of allergenicity, toxicity, nutritional and anti-nutritional risks. They consider risks for non-target organisms and the environment. There are no cases where post-market surveillance has uncovered harm to consumers or the environment including potential transfer of DNA from the GMO to non-target organisms. In fact, many GMOs have helped improve production, yield and reduced risks from chemical insecticides or fungicides. Yet there are generic calls to label foods containing any genetic modification as a GMO and refusing to allow GM events to be labeled as organic. Many African countries have accepted the Cartagena Protocol as a tool to keep GM events out of their countries while facing food insecurity. The rationale for those restrictions are not rational. Other issues related to genetic diversity, seed production and environmental safety must be addressed. What can be done to increase acceptance of safe and nutritious foods as the population increases, land for cultivation is reduced and energy costs soar?

自 1995 年第一批转基因或改良作物或生物(GMO)被批准用于商业生产以来,还没有任何新的转基因生物被证明对人类消费者造成危害或伤害。这些改造提高了作物的效率,减少了虫害造成的损失,减少了病毒和微生物植物病原体造成的损失,并提高了耐旱性。少数改良侧重于营养方面,如在黄金大米中添加胡萝卜素。美国和签署 CODEX Alimentarius 和 Cartagena 生物安全协议的国家的监管机构对人类和动物食品安全进行了评估,考虑了过敏性、毒性、营养和抗营养风险等潜在风险。它们还考虑了对非目标生物和环境的风险。没有上市后监测发现对消费者或环境造成伤害的案例,包括转基因生物的 DNA 可能转移到非目标生物。事实上,许多转基因生物有助于提高产量和收益,降低化学杀虫剂或杀真菌剂的风险。然而,人们普遍呼吁将含有任何转基因成分的食品标为转基因生物,并拒绝允许将转基因食品标为有机食品。许多非洲国家接受了《卡塔赫纳议定书》,将其作为一种工具,在面临粮食不安全的情况下将转基因事件拒之门外。这些限制的理由并不合理。必须解决与遗传多样性、种子生产和环境安全有关的其他问题。在人口增加、耕地减少、能源成本飙升的情况下,如何才能提高人们对安全营养食品的接受程度?
{"title":"Twenty-eight years of GM Food and feed without harm: why not accept them?","authors":"Richard E Goodman","doi":"10.1080/21645698.2024.2305944","DOIUrl":"10.1080/21645698.2024.2305944","url":null,"abstract":"<p><p>Since the first genetically engineered or modified crops or organisms (GMO) were approved for commercial production in 1995, no new GMO has been proven to be a hazard or cause harm to human consumers. These modifications have improved crop efficiency, reduced losses to insect pests, reduced losses to viral and microbial plant pathogens and improved drought tolerance. A few have focused on nutritional improvements producing beta carotene in Golden Rice. Regulators in the United States and countries signing the CODEX Alimentarius and Cartagena Biosafety agreements have evaluated human and animal food safety considering potential risks of allergenicity, toxicity, nutritional and anti-nutritional risks. They consider risks for non-target organisms and the environment. There are no cases where post-market surveillance has uncovered harm to consumers or the environment including potential transfer of DNA from the GMO to non-target organisms. In fact, many GMOs have helped improve production, yield and reduced risks from chemical insecticides or fungicides. Yet there are generic calls to label foods containing any genetic modification as a GMO and refusing to allow GM events to be labeled as organic. Many African countries have accepted the Cartagena Protocol as a tool to keep GM events out of their countries while facing food insecurity. The rationale for those restrictions are not rational. Other issues related to genetic diversity, seed production and environmental safety must be addressed. What can be done to increase acceptance of safe and nutritious foods as the population increases, land for cultivation is reduced and energy costs soar?</p>","PeriodicalId":54282,"journal":{"name":"Gm Crops & Food-Biotechnology in Agriculture and the Food Chain","volume":"15 1","pages":"40-50"},"PeriodicalIF":3.9,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10939142/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140112193","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Adoption of hydrogen-based steel production under uncertain domestic hydrogen availability: An Indonesian case study
IF 8.1 2区 工程技术 Q1 CHEMISTRY, PHYSICAL Pub Date : 2024-12-03 DOI: 10.1016/j.ijhydene.2024.11.442
Teuku Naraski Zahari, Benjamin McLellan
In line with the Nationally-Determined Contribution (NDC), the Indonesian steel industry must move to a less energy and carbon-intensive production where the hydrogen-based Direct Reduction Iron Electric Arc Furnace (H2-DRI-EAF) pathway comes as a prominent alternative. However, due to the complexity of the transition it is important to understand the key uncertainties in the adoption of H2-DRI-EAF production pathway in the steel industry, particularly since it must also address the availability of hydrogen domestically. We developed a system dynamics model, conducted a sensitivity to investigate the uncertainties, and to evaluate their effect on the observed indicators. Our results conclude that GDP growth, hydrogen maximum injection rate, and renewables development rate as the key uncertainties to the adoption of hydrogen in the steel industry, and ultimately to the effort in decarbonizing the sector. Furthermore, we found that domestic hydrogen production can fulfil between 20% and 77% of the demand in the Indonesian steel industry. In Indonesia's case, our results show that the share of H2-DRI-EAF could be between 29 and 38% and the share of hydrogen in the fuel mix could vary widely from 1.91% to 18.9%. The findings in this study could potentially be useful for the steel industry and policy makers alike to design a comprehensive decarbonization strategies.
{"title":"Adoption of hydrogen-based steel production under uncertain domestic hydrogen availability: An Indonesian case study","authors":"Teuku Naraski Zahari,&nbsp;Benjamin McLellan","doi":"10.1016/j.ijhydene.2024.11.442","DOIUrl":"10.1016/j.ijhydene.2024.11.442","url":null,"abstract":"<div><div>In line with the Nationally-Determined Contribution (NDC), the Indonesian steel industry must move to a less energy and carbon-intensive production where the hydrogen-based Direct Reduction Iron Electric Arc Furnace (H2-DRI-EAF) pathway comes as a prominent alternative. However, due to the complexity of the transition it is important to understand the key uncertainties in the adoption of H2-DRI-EAF production pathway in the steel industry, particularly since it must also address the availability of hydrogen domestically. We developed a system dynamics model, conducted a sensitivity to investigate the uncertainties, and to evaluate their effect on the observed indicators. Our results conclude that GDP growth, hydrogen maximum injection rate, and renewables development rate as the key uncertainties to the adoption of hydrogen in the steel industry, and ultimately to the effort in decarbonizing the sector. Furthermore, we found that domestic hydrogen production can fulfil between 20% and 77% of the demand in the Indonesian steel industry. In Indonesia's case, our results show that the share of H<sub>2</sub>-DRI-EAF could be between 29 and 38% and the share of hydrogen in the fuel mix could vary widely from 1.91% to 18.9%. The findings in this study could potentially be useful for the steel industry and policy makers alike to design a comprehensive decarbonization strategies.</div></div>","PeriodicalId":337,"journal":{"name":"International Journal of Hydrogen Energy","volume":"97 ","pages":"Pages 549-570"},"PeriodicalIF":8.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The E3 ubiquitin ligase TaGW2 facilitates TaSnRK1γ and TaVPS24 degradation to enhance stripe rust susceptibility in wheat
IF 13.8 1区 生物学 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Pub Date : 2024-12-03 DOI: 10.1111/pbi.14536
Shumin Li, Tian Li, Peiyin Zhang, Xuemin Wang, Wenxuan Feng, Yifang Zhang, Bin Chen, Yuling Liu, Gangming Zhan, Chenyang Hao, Xueyong Zhang, Zhensheng Kang, Hude Mao
Wheat stripe rust, caused by the fungal pathogen Puccinia striiformis f. sp. tritici (Pst), threatens global wheat production, and therefore discovering genes involved in stripe rust susceptibility is essential for balancing yield with disease resistance in sustainable breeding strategies. Although TaGW2 is well known to negatively regulate wheat kernel size and weight, its role in stress response remains unclear. Here, we found that TaGW2 transcription levels increased following inoculation with Pst or treatment with flg22 or chitin. TaGW2 knockdown lines showed enhanced resistance to multiple Pst races, while TaGW2 overexpression reduced host defence response, promoted Pst growth and development and increased wheat susceptibility to Pst. Additionally, TaGW2 could mediate the ubiquitination and degradation of both TaSnRK1γ and TaVPS24 via the 26S proteasome pathway. Silencing TaSnRK1γ or TaVPS24 in wheat increased sensitivity to Pst, whereas overexpressing either gene enhanced wheat defence response, indicating that TaSnRK1γ and TaVPS24 act as positive regulators of Pst resistance. This study reveals a previously unrecognized mechanism inhibiting plant immunity to Pst through TaGW2-mediated ubiquitination and degradation of TaSnRK1γ and TaVPS24. This work also provides crucial genetic resources for breeding high-yield, stripe rust-resistant wheat varieties.
{"title":"The E3 ubiquitin ligase TaGW2 facilitates TaSnRK1γ and TaVPS24 degradation to enhance stripe rust susceptibility in wheat","authors":"Shumin Li, Tian Li, Peiyin Zhang, Xuemin Wang, Wenxuan Feng, Yifang Zhang, Bin Chen, Yuling Liu, Gangming Zhan, Chenyang Hao, Xueyong Zhang, Zhensheng Kang, Hude Mao","doi":"10.1111/pbi.14536","DOIUrl":"https://doi.org/10.1111/pbi.14536","url":null,"abstract":"Wheat stripe rust, caused by the fungal pathogen <i>Puccinia striiformis</i> f. sp. <i>tritici</i> (<i>Pst</i>), threatens global wheat production, and therefore discovering genes involved in stripe rust susceptibility is essential for balancing yield with disease resistance in sustainable breeding strategies. Although TaGW2 is well known to negatively regulate wheat kernel size and weight, its role in stress response remains unclear. Here, we found that <i>TaGW2</i> transcription levels increased following inoculation with <i>Pst</i> or treatment with flg22 or chitin. <i>TaGW2</i> knockdown lines showed enhanced resistance to multiple <i>Pst</i> races, while <i>TaGW2</i> overexpression reduced host defence response, promoted <i>Pst</i> growth and development and increased wheat susceptibility to <i>Pst</i>. Additionally, TaGW2 could mediate the ubiquitination and degradation of both TaSnRK1γ and TaVPS24 via the 26S proteasome pathway. Silencing <i>TaSnRK1γ</i> or <i>TaVPS24</i> in wheat increased sensitivity to <i>Pst</i>, whereas overexpressing either gene enhanced wheat defence response, indicating that TaSnRK1γ and TaVPS24 act as positive regulators of <i>Pst</i> resistance. This study reveals a previously unrecognized mechanism inhibiting plant immunity to <i>Pst</i> through TaGW2-mediated ubiquitination and degradation of TaSnRK1γ and TaVPS24. This work also provides crucial genetic resources for breeding high-yield, stripe rust-resistant wheat varieties.","PeriodicalId":221,"journal":{"name":"Plant Biotechnology Journal","volume":"8 1","pages":""},"PeriodicalIF":13.8,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced removal and selective conversion for NO with N-vacancies g-C3N4BaTiO3 by piezo-photocatalysis
IF 8.6 1区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2024-12-03 DOI: 10.1016/j.seppur.2024.130914
Guanyu Liu, Tianzheng Zhao, Jiayu Wu, Miaomiao Chang, Hailiang Fei, Fen Li, Sanqiang Yang, Qian Li
Piezo-photocatalysis is a promising strategy to improve photocatalytic activity, while it is challenged and unidentified for NO removal. Also, the restraint of NO2 generation during the photocatalytic NO removal is still a very thorny problem. In this paper, g-C3N4 containing N vacancies (CNV) compounded with BaTiO3 (CNVB) was prepared, which exhibited excellent piezo-photocatalytic (PPC) activity for NO removal, with a removal efficiency of 77.9 %. It is 2.21, 1.59 times higher than that of g-C3N4, CNV with piezo-photocatalysis and 1.62 times comparing to CNVB with only photocatalysis. Besides, the higher conversion rates of NO to NO3 (71.3 %) performed by CNVB with piezo-photocatalysis compared to g-C3N4 and CNV indicated NO2 inhibition and the selectivity for NO removal. Structural characterizations and DFT calculations revealed that an adequate number of carriers (e- and h+) are generated and migrated directionally to the bend valence band and conduction band of CNVB under the effect of built-in electric field (BEF) induced by piezo-polarization. This results in a negative shift in the overall band position of CNVB, and effectively promotes the selective adsorption and activation of NO and O2 and the generation of e-, ·O2, enhancing the NO removal efficiency and improving the selectivity of NO to NO3.
{"title":"Enhanced removal and selective conversion for NO with N-vacancies g-C3N4BaTiO3 by piezo-photocatalysis","authors":"Guanyu Liu, Tianzheng Zhao, Jiayu Wu, Miaomiao Chang, Hailiang Fei, Fen Li, Sanqiang Yang, Qian Li","doi":"10.1016/j.seppur.2024.130914","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.130914","url":null,"abstract":"Piezo-photocatalysis is a promising strategy to improve photocatalytic activity, while it is challenged and unidentified for NO removal. Also, the restraint of NO<sub>2</sub> generation during the photocatalytic NO removal is still a very thorny problem. In this paper, g-C<sub>3</sub>N<sub>4</sub> containing N vacancies (CN<sub>V</sub>) compounded with BaTiO<sub>3</sub> (CN<sub>V</sub>B) was prepared, which exhibited excellent piezo-photocatalytic (PPC) activity for NO removal, with a removal efficiency of 77.9 %. It is 2.21, 1.59 times higher than that of g-C<sub>3</sub>N<sub>4</sub>, CN<sub>V</sub> with piezo-photocatalysis and 1.62 times comparing to CN<sub>V</sub>B with only photocatalysis. Besides, the higher conversion rates of NO to NO<sub>3</sub><sup>–</sup> (71.3 %) performed by CN<sub>V</sub>B with piezo-photocatalysis compared to g-C<sub>3</sub>N<sub>4</sub> and CN<sub>V</sub> indicated NO<sub>2</sub> inhibition and the selectivity for NO removal. Structural characterizations and DFT calculations revealed that an adequate number of carriers (e<sup>-</sup> and h<sup>+</sup>) are generated and migrated directionally to the bend valence band and conduction band of CN<sub>V</sub>B under the effect of built-in electric field (BEF) induced by piezo-polarization. This results in a negative shift in the overall band position of CN<sub>V</sub>B, and effectively promotes the selective adsorption and activation of NO and O<sub>2</sub> and the generation of e<sup>-</sup>, ·O<sub>2</sub><sup>–</sup>, enhancing the NO removal efficiency and improving the selectivity of NO to NO<sub>3</sub><sup>–</sup>.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"30 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142760477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A novel approach for flotation separation of talc and molybdenite: Scrap steel-molybdenite galvanic corrosion treatment and its mechanism
IF 8.6 1区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2024-12-03 DOI: 10.1016/j.seppur.2024.130924
Long Lei, Baolin Ke, Haiyang Zhu, Lunyu Yao, Jianhua Chen
Molybdenum is an important strategic resource. Talc-type molybdenite is abundant in reserves, but it is difficult to separate talc and molybdenite efficiently and cleanly because of their similar strong hydrophobicity. In this paper, the effect of galvanic corrosion between scrap steel and molybdenite on flotation behavior of molybdenite was studied under different conditions (different scrap steel materials, slurry water content, galvanic corrosion time and galvanic corrosion ambient temperature).The method for flotation separation of molybdenite and talc by galvanic corrosion of scrap steel-molybdenite was established for the first time. In addition, XPS, SEM, TOF-SIMS, contact Angle test and electrochemical test were used to study the effect of galvanic corrosion of scrap steel-molybdenite on the surface properties of molybdenite and talc. The results show that strong galvanic corrosion between scrap steel and molybdenite can significantly reduce the hydrophobicity of molybdenite, but there is no galvanic corrosion between scrap steel and talc under the same conditions, and scrap steel has no significant effect on the surface hydrophobicity of talc. Therefore, the galvanic corrosion of scrap steel-molybdenite can effectively expand the floatability difference between talc and molybdenite, and strengthen the flotation separation of molybdenite and talc. The flotation test results of artificial mixed ore show that in the case of mineral mixing, the galvanic corrosion of scrap steel-molybdenite still shows a strong inhibition effect on molybdenite flotation, so that 97.04 % of molybdenite in the mixed ore is inhibited into the tailings (molybdenite products). The research results expand the new high-value utilization way of scrap steel in sulfide ore flotation, and help to promote the sustainable development of iron and steel industry and sulfide ores industry. In addition, the research results also have reference significance for the use of scrap steel galvanic corrosion to inhibit other sulfide ores such as pyrite and arsenopyrite.
{"title":"A novel approach for flotation separation of talc and molybdenite: Scrap steel-molybdenite galvanic corrosion treatment and its mechanism","authors":"Long Lei, Baolin Ke, Haiyang Zhu, Lunyu Yao, Jianhua Chen","doi":"10.1016/j.seppur.2024.130924","DOIUrl":"https://doi.org/10.1016/j.seppur.2024.130924","url":null,"abstract":"Molybdenum is an important strategic resource. Talc-type molybdenite is abundant in reserves, but it is difficult to separate talc and molybdenite efficiently and cleanly because of their similar strong hydrophobicity. In this paper, the effect of galvanic corrosion between scrap steel and molybdenite on flotation behavior of molybdenite was studied under different conditions (different scrap steel materials, slurry water content, galvanic corrosion time and galvanic corrosion ambient temperature).The method for flotation separation of molybdenite and talc by galvanic corrosion of scrap steel-molybdenite was established for the first time. In addition, XPS, SEM, TOF-SIMS, contact Angle test and electrochemical test were used to study the effect of galvanic corrosion of scrap steel-molybdenite on the surface properties of molybdenite and talc. The results show that strong galvanic corrosion between scrap steel and molybdenite can significantly reduce the hydrophobicity of molybdenite, but there is no galvanic corrosion between scrap steel and talc under the same conditions, and scrap steel has no significant effect on the surface hydrophobicity of talc. Therefore, the galvanic corrosion of scrap steel-molybdenite can effectively expand the floatability difference between talc and molybdenite, and strengthen the flotation separation of molybdenite and talc. The flotation test results of artificial mixed ore show that in the case of mineral mixing, the galvanic corrosion of scrap steel-molybdenite still shows a strong inhibition effect on molybdenite flotation, so that 97.04 % of molybdenite in the mixed ore is inhibited into the tailings (molybdenite products). The research results expand the new high-value utilization way of scrap steel in sulfide ore flotation, and help to promote the sustainable development of iron and steel industry and sulfide ores industry. In addition, the research results also have reference significance for the use of scrap steel galvanic corrosion to inhibit other sulfide ores such as pyrite and arsenopyrite.","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"9 1","pages":""},"PeriodicalIF":8.6,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142760690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Customized low heat resistance interfacial structure endowing multifunctional composite with excellent thermal conductivity
IF 15.1 1区 工程技术 Q1 ENGINEERING, CHEMICAL Pub Date : 2024-12-03 DOI: 10.1016/j.cej.2024.158246
Xu Li, Bin Wu, Ying Lv, Ru Xia, Jiasheng Qian
Multifunctional polymer-based thermal management composites are essential for the long-term normal service of modern electronic devices. However, multi-position interfacial thermal resistance attributed to the difference in the phase structure significantly limits the full performance of the composite. Herein, based on the molecular structure of a composite formed by boron nitride nanosheets (BNNSs) and aramid nanofibers (ANF), sulfonated ionic liquid (s-IL) was selected by DFT calculation to establish a multiple non-covalent bonding interface structure that comprehensively improves the performance, especially heat transfer. Depending on the functionalization of s-IL, the interface structures of cation-π and OH⋯π constructed between BNNSs and the OH⋯O interaction built between BNNSs and ANF gives the composites a thermal conductivity of up to 23 W/m K−1. In addition, the tensile strength, limiting oxygen index, volume resistivity, and electronic breakdown strength of ∼129 MPa, ∼42 %, ∼2.44 × 1012 Ω cm, and ∼78 kV mm−1 facilitate the excellent multifunctional property of the composite. Non-equilibrium molecular dynamics (NEMD) simulation further revealed that electron–phonon coupling mechanism in the “super-highway” thermally conductive pathways constructed by s-IL enhanced interfacial heat transfer. The customized interface structure design opens a new platform for the development of multifunctional thermal management materials with a low interfacial heat resistance in electronic devices filed.
{"title":"Customized low heat resistance interfacial structure endowing multifunctional composite with excellent thermal conductivity","authors":"Xu Li, Bin Wu, Ying Lv, Ru Xia, Jiasheng Qian","doi":"10.1016/j.cej.2024.158246","DOIUrl":"https://doi.org/10.1016/j.cej.2024.158246","url":null,"abstract":"Multifunctional polymer-based thermal management composites are essential for the long-term normal service of modern electronic devices. However, multi-position interfacial thermal resistance attributed to the difference in the phase structure significantly limits the full performance of the composite. Herein, based on the molecular structure of a composite formed by boron nitride nanosheets (BNNSs) and aramid nanofibers (ANF), sulfonated ionic liquid (s-IL) was selected by DFT calculation to establish a multiple non-covalent bonding interface structure that comprehensively improves the performance, especially heat transfer. Depending on the functionalization of s-IL, the interface structures of cation-π and OH⋯π constructed between BNNSs and the OH⋯O interaction built between BNNSs and ANF gives the composites a thermal conductivity of up to 23 W/m K<sup>−1</sup>. In addition, the tensile strength, limiting oxygen index, volume resistivity, and electronic breakdown strength of ∼129 MPa, ∼42 %, ∼2.44 × 10<sup>12</sup> Ω cm, and ∼78 kV mm<sup>−1</sup> facilitate the excellent multifunctional property of the composite. Non-equilibrium molecular dynamics (NEMD) simulation further revealed that electron–phonon coupling mechanism in the “super-highway” thermally conductive pathways constructed by s-IL enhanced interfacial heat transfer. The customized interface structure design opens a new platform for the development of multifunctional thermal management materials with a low interfacial heat resistance in electronic devices filed.","PeriodicalId":270,"journal":{"name":"Chemical Engineering Journal","volume":"66 1","pages":""},"PeriodicalIF":15.1,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142760739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Hierarchically porous carbon wood sponge decorated with bimetallic sites: A highly efficient electrocatalyst for hydrogen evolution in universal-pH electrolytes and seawater
IF 6.7 1区 工程技术 Q2 ENERGY & FUELS Pub Date : 2024-12-03 DOI: 10.1016/j.fuel.2024.133992
Jia Liu , Chenglin Liu , Xianglin Qiu , Tianshuo Zhang , Shanshan Gao , Xiaoming Song , Fushan Chen
Designing low-cost, non-noble metal electrocatalysts for complex seawater-splitting processes remains a significant challenge. In this study, we report a highly efficient electrocatalyst composed of Fe-Co alloy-embedded MXene nanosheets grown on a nitrogen and carbon-doped, low-tortuosity, hierarchically porous wood carbon sponge (FeCo@CN/MXene/CS). This FeCo@CN/MXene/CS catalyst, with its porous layered structure, demonstrates exceptional bifunctional electrocatalytic performance, including remarkable electrochemical activity and stability in seawater. Notably, in 0.5 M H2SO4 and 1.0 M KOH, the catalyst exhibits overpotentials of 70 mV and 64 mV, respectively, for the hydrogen evolution reaction (HER) at a current density of 10 mA cm−2. Furthermore, it shows excellent catalytic activity and durability in natural seawater, with only a slight decrease in HER activity after 5000 cyclic voltammetry (CV) cycles and negligible degradation after 20 h of continuous electrolysis. The outstanding performance of FeCo@CN/MXene/CS is attributed to its ability to lower the energy barrier for water dissociation, optimize the adsorption and desorption of H* intermediates, and facilitate rapid mass transfer through its porous structure, as supported by both density functional theory and experimental results. This research presents a novel approach for converting abundant biomass resources into highly efficient electrocatalysts, enhancing electrocatalytic hydrogen production in natural seawater.
{"title":"Hierarchically porous carbon wood sponge decorated with bimetallic sites: A highly efficient electrocatalyst for hydrogen evolution in universal-pH electrolytes and seawater","authors":"Jia Liu ,&nbsp;Chenglin Liu ,&nbsp;Xianglin Qiu ,&nbsp;Tianshuo Zhang ,&nbsp;Shanshan Gao ,&nbsp;Xiaoming Song ,&nbsp;Fushan Chen","doi":"10.1016/j.fuel.2024.133992","DOIUrl":"10.1016/j.fuel.2024.133992","url":null,"abstract":"<div><div>Designing low-cost, non-noble metal electrocatalysts for complex seawater-splitting processes remains a significant challenge. In this study, we report a highly efficient electrocatalyst composed of Fe-Co alloy-embedded MXene nanosheets grown on a nitrogen and carbon-doped, low-tortuosity, hierarchically porous wood carbon sponge (FeCo@CN/MXene/CS). This FeCo@CN/MXene/CS catalyst, with its porous layered structure, demonstrates exceptional bifunctional electrocatalytic performance, including remarkable electrochemical activity and stability in seawater. Notably, in 0.5 M H<sub>2</sub>SO<sub>4</sub> and 1.0 M KOH, the catalyst exhibits overpotentials of 70 mV and 64 mV, respectively, for the hydrogen evolution reaction (HER) at a current density of 10 mA cm<sup>−2</sup>. Furthermore, it shows excellent catalytic activity and durability in natural seawater, with only a slight decrease in HER activity after 5000 cyclic voltammetry (CV) cycles and negligible degradation after 20 h of continuous electrolysis. The outstanding performance of FeCo@CN/MXene/CS is attributed to its ability to lower the energy barrier for water dissociation, optimize the adsorption and desorption of H* intermediates, and facilitate rapid mass transfer through its porous structure, as supported by both density functional theory and experimental results. This research presents a novel approach for converting abundant biomass resources into highly efficient electrocatalysts, enhancing electrocatalytic hydrogen production in natural seawater.</div></div>","PeriodicalId":325,"journal":{"name":"Fuel","volume":"384 ","pages":"Article 133992"},"PeriodicalIF":6.7,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
MFSleepNet: A multi-receptive field sleep networks for sleep stage classification
IF 4.9 2区 医学 Q1 ENGINEERING, BIOMEDICAL Pub Date : 2024-12-03 DOI: 10.1016/j.bspc.2024.107264
Jun Ma , Xingfeng Lv , Yang Zhang
Sleep stage classification is essential for assessing sleep quality and diagnosing sleep disorders. However, most existing deep learning-based methods extract features from each channel’s electroencephalogram signals, which overlook the spatio-temporal features of different channels. Therefore, making full use of the spatio-temporal features is still a challenge. To tackle this challenge, we propose a multi-receptive field sleep network (MFSleepNet) to capture different levels of graph structure features. This network includes the feature extraction module, an enhanced spatio-temporal feature module, a multi-receptive graph convolution network, and an attention fusion module. The feature extraction module obtains rich features through feature augmentation based on features at different frequencies. An enhanced spatio-temporal feature module is designed, which mainly includes a temporal gating layer, temporal attention, and spatial attention. This module can extract useful temporal and spatial features. In addition, the multi-receptive graph convolution network module is used to extract structural features at different levels. Then, we use the attention fusion module to learn global information to selectively emphasize informative features and suppress less reliable features. We validate the effectiveness of the proposed framework on the ISRUC-S3 dataset. The overall performance is better than the baseline method. This method can potentially be an effective tool for quickly diagnosing sleep disorders.
{"title":"MFSleepNet: A multi-receptive field sleep networks for sleep stage classification","authors":"Jun Ma ,&nbsp;Xingfeng Lv ,&nbsp;Yang Zhang","doi":"10.1016/j.bspc.2024.107264","DOIUrl":"10.1016/j.bspc.2024.107264","url":null,"abstract":"<div><div>Sleep stage classification is essential for assessing sleep quality and diagnosing sleep disorders. However, most existing deep learning-based methods extract features from each channel’s electroencephalogram signals, which overlook the spatio-temporal features of different channels. Therefore, making full use of the spatio-temporal features is still a challenge. To tackle this challenge, we propose a multi-receptive field sleep network (MFSleepNet) to capture different levels of graph structure features. This network includes the feature extraction module, an enhanced spatio-temporal feature module, a multi-receptive graph convolution network, and an attention fusion module. The feature extraction module obtains rich features through feature augmentation based on features at different frequencies. An enhanced spatio-temporal feature module is designed, which mainly includes a temporal gating layer, temporal attention, and spatial attention. This module can extract useful temporal and spatial features. In addition, the multi-receptive graph convolution network module is used to extract structural features at different levels. Then, we use the attention fusion module to learn global information to selectively emphasize informative features and suppress less reliable features. We validate the effectiveness of the proposed framework on the ISRUC-S3 dataset. The overall performance is better than the baseline method. This method can potentially be an effective tool for quickly diagnosing sleep disorders.</div></div>","PeriodicalId":55362,"journal":{"name":"Biomedical Signal Processing and Control","volume":"102 ","pages":"Article 107264"},"PeriodicalIF":4.9,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759760","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modified poly(vinylidene fluoride) polymer binder enables ultrathin sulfide solid electrolyte membrane for all-solid-state batteries
IF 8.9 2区 工程技术 Q1 ENERGY & FUELS Pub Date : 2024-12-03 DOI: 10.1016/j.est.2024.114859
Rui Li , Yuqiong Mao , Ning Chen , Qingqing Liu , Jie Shao , Zhiqiang Liao , Kai Qiu , Pengbo Wang , Shuai Hao , Xuemei Liao , Hanli Wang , Yingzhu Wei , Chunli Guo , Xiang Liu , Gaolong Zhu , Dongsheng Ren , Languang Lu , Minggao Ouyang
All-solid-state batteries (ASSBs) employing high-ionic-conductivity sulfide solid electrolytes (SEs) are the most promising next-generation batteries. Scalable fabrication of sulfide SE membranes is the priority for mass production of ASSBs. However, due to the poor chemical stability of sulfide SEs, the wet-slurry-based preparation of sulfide SE membranes is still hindered by limited choices of solvent-binder systems. Herein, we reported a modified poly(vinylidene fluoride) (M-PVDF) binder to achieve environment-friendly fabrication of sulfide SE membranes. Copolymerization is firstly performed on the widely-used PVDF binder to decrease crystallinity, which facilitate excellent solubility in the isobutyl isobutyrate-based slurry. Utilizing this efficient M-PVDF binder, the sulfide SE membrane achieves a high ionic conductivity of 2 mS cm−1 at 25 °C, an ultra-thin thickness of 26 μm, and good flexibility. The resulting ASSBs exhibit excellent rate performance with 53.51 % capacity utilization ratio at 5C. The ASSB also maintains high capacity retention rates of 96.9 % after 350 cycles under 0.5C at 25 °C and 87.8 % after 1000 cycles under 5C at 45 °C. This work can facilitate the non-toxic wet-slurry-based manufacturing of sulfide SE membrane, helping to promote the commercialization of ASSBs.
{"title":"Modified poly(vinylidene fluoride) polymer binder enables ultrathin sulfide solid electrolyte membrane for all-solid-state batteries","authors":"Rui Li ,&nbsp;Yuqiong Mao ,&nbsp;Ning Chen ,&nbsp;Qingqing Liu ,&nbsp;Jie Shao ,&nbsp;Zhiqiang Liao ,&nbsp;Kai Qiu ,&nbsp;Pengbo Wang ,&nbsp;Shuai Hao ,&nbsp;Xuemei Liao ,&nbsp;Hanli Wang ,&nbsp;Yingzhu Wei ,&nbsp;Chunli Guo ,&nbsp;Xiang Liu ,&nbsp;Gaolong Zhu ,&nbsp;Dongsheng Ren ,&nbsp;Languang Lu ,&nbsp;Minggao Ouyang","doi":"10.1016/j.est.2024.114859","DOIUrl":"10.1016/j.est.2024.114859","url":null,"abstract":"<div><div>All-solid-state batteries (ASSBs) employing high-ionic-conductivity sulfide solid electrolytes (SEs) are the most promising next-generation batteries. Scalable fabrication of sulfide SE membranes is the priority for mass production of ASSBs. However, due to the poor chemical stability of sulfide SEs, the wet-slurry-based preparation of sulfide SE membranes is still hindered by limited choices of solvent-binder systems. Herein, we reported a modified poly(vinylidene fluoride) (M-PVDF) binder to achieve environment-friendly fabrication of sulfide SE membranes. Copolymerization is firstly performed on the widely-used PVDF binder to decrease crystallinity, which facilitate excellent solubility in the isobutyl isobutyrate-based slurry. Utilizing this efficient M-PVDF binder, the sulfide SE membrane achieves a high ionic conductivity of 2 mS cm<sup>−1</sup> at 25 °C, an ultra-thin thickness of 26 μm, and good flexibility. The resulting ASSBs exhibit excellent rate performance with 53.51 % capacity utilization ratio at 5C. The ASSB also maintains high capacity retention rates of 96.9 % after 350 cycles under 0.5C at 25 °C and 87.8 % after 1000 cycles under 5C at 45 °C. This work can facilitate the non-toxic wet-slurry-based manufacturing of sulfide SE membrane, helping to promote the commercialization of ASSBs.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"106 ","pages":"Article 114859"},"PeriodicalIF":8.9,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142759230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ultralow Emissions of Low-Concentration SO2 in Flue Gas Using Azole-Based Ionic Liquids
IF 4.2 3区 工程技术 Q2 ENGINEERING, CHEMICAL Pub Date : 2024-12-03 DOI: 10.1021/acs.iecr.4c03797
Lili Jiang, Zhenyu Zhao, Kaili Wang, Zhaowei Zhang, Wenjun Lin, Haoran Li, Congmin Wang
In recent years, ultralow emissions (ULE) have attracted more attention due to the stricter environmental pollution standards. Developing desulfurizers to meet the needs of ultralow emissions standards is pressingly needed. Herein, various ionic liquids (ILs) were designed using the basicity-tunable and cation-tunable strategies for the capture of 2000 ppm of SO2 in flue gas. Furthermore, NMR spectra, FT-IR spectra, and DFT calculations, including noncovalent interaction (NCI) and reduced density gradient (RDG) analysis, were used to testify the absorption mechanism. Anions of ILs were proved to play a vital role in ultralow emissions, and [Bentriz] was regarded as an ideal anion for the ultralow emission in this work, while cations of ILs had little effect on ultralow emissions performance. [P4442][Bentriz] exhibited excellent ability of ultralow emissions (5 ppm), splendid removal efficiency (>99%), outstanding absorption capacity (1.03 mol SO2/mol IL), and good reversibility (6 cycles).
{"title":"Ultralow Emissions of Low-Concentration SO2 in Flue Gas Using Azole-Based Ionic Liquids","authors":"Lili Jiang, Zhenyu Zhao, Kaili Wang, Zhaowei Zhang, Wenjun Lin, Haoran Li, Congmin Wang","doi":"10.1021/acs.iecr.4c03797","DOIUrl":"https://doi.org/10.1021/acs.iecr.4c03797","url":null,"abstract":"In recent years, ultralow emissions (ULE) have attracted more attention due to the stricter environmental pollution standards. Developing desulfurizers to meet the needs of ultralow emissions standards is pressingly needed. Herein, various ionic liquids (ILs) were designed using the basicity-tunable and cation-tunable strategies for the capture of 2000 ppm of SO<sub>2</sub> in flue gas. Furthermore, NMR spectra, FT-IR spectra, and DFT calculations, including noncovalent interaction (NCI) and reduced density gradient (RDG) analysis, were used to testify the absorption mechanism. Anions of ILs were proved to play a vital role in ultralow emissions, and [Bentriz] was regarded as an ideal anion for the ultralow emission in this work, while cations of ILs had little effect on ultralow emissions performance. [P<sub>4442</sub>][Bentriz] exhibited excellent ability of ultralow emissions (5 ppm), splendid removal efficiency (&gt;99%), outstanding absorption capacity (1.03 mol SO<sub>2</sub>/mol IL), and good reversibility (6 cycles).","PeriodicalId":39,"journal":{"name":"Industrial & Engineering Chemistry Research","volume":"9 1","pages":""},"PeriodicalIF":4.2,"publicationDate":"2024-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142760271","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
全部 ACS BIOMATER-SCI ENG ENERG FUEL IND ENG CHEM RES Biomater. Sci. Lab Chip Mol. Syst. Des. Eng. Adv. Healthcare Mater. AlChE J. Biotechnol. J. Comput.-Aided Civ. Infrastruct. Eng. J. Tissue Eng. Regener. Med. Microb. Biotechnol. Plant Biotechnol. J. Sol. RRL Acta Biomater. Appl. Energy BIOMASS BIOENERG Biomaterials Bioresour. Technol. Cem. Concr. Res. Chem. Eng. J.(CEJ) Chem. Eng. Sci. Combust. Flame Compos. Struct. COMPUT CHEM ENG Comput. Fluids Constr. Build. Mater. Curr. Opin. Chem. Eng. Dent. Mater. Desalination Electrochem. Commun. Fuel Fuel Process. Technol. Int. Commun. Heat Mass Transfer Int. J. Greenhouse Gas Control Int. J. Heat Fluid Flow Int. J. Heat Mass Transfer Int. J. Hydrogen Energy Int. J. Multiphase Flow Int. J. Therm. Sci. J. CO2 Util. J. Ind. Eng. Chem. J. Membr. Sci. J. Nat. Gas Sci. Eng. J. Nucl. Mater. J. Power Sources J. Mech. Behav. Biomed. Mater. J. Taiwan Inst. Chem. Eng. MAT SCI ENG A-STRUCT Mater. Sci. Eng. R Rep. Org. Electron. Powder Technol. Proc. Combust. Inst. Prog. Energy Combust. Sci. Prog. Surf. Sci. Remote Sens. Environ. Renewable Energy Sep. Purif. Technol. Sol. Energy IEEE Electr. Insul. Mag. IEEE J. Photovoltaics IEEE Trans. Device Mater. Reliab. IEEE Trans. Nanotechnol. IEEE Trans. Semicond. Manuf. IEEE Trans. Sustainable Energy Accredit. Qual. Assur. Acta Mech. Adsorption Appl. Biochem. Biotechnol. Appl. Nanosci. ARCH APPL MECH At. Energy Biodegradation Bioenergy Res. Biomass Convers. Biorefin. Biomech. Model. Mechanobiol. Biomed. Microdevices Biotechnol. Biofuels BMC Chem. Eng. Bull. Eng. Geol. Environ. Comput. Part. Mech. Continuum Mech. Thermodyn. Energy Effic. ENERGY SUSTAIN SOC Exp. Mech. Exp. Tech. Exp. Fluids Fire Technol. FLOW TURBUL COMBUST Fluid Dyn. FRONT ENERGY Front. Chem. Sci. Eng. Gold Bull. Granular Matter Instrum. Exp. Tech. Int. J. Fract. Int. J. Steel Struct. Int. J. Thermophys. J. Appl. Mech. Tech. Phys. J. Comput. Electron.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1