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Branavan ARULMOLY; Chaminda KONTHESINGHA; Anura NANAYAKKARA
《结构与土木工程前沿(英文)》 2022年 第16卷 第11期 页码 1453-1473 doi: 10.1007/s11709-022-0877-2
关键词: manufactured sand fresh concrete microfines admixtures shrinkage cracking
《农业科学与工程前沿(英文)》 2021年 第8卷 第2期
Fruit cracking is a major disorder that affects the integrity of fruit and reduces the commercial value of tomato and other fleshy fruit. Here, we have found a novel fruit ‘netted-cracking’ (FNC) phenotype in tomato introgression line IL4-4 which is present in neither the donor parent (LA0716) nor the receptor parent (M82). An F2 population was generated by crossing IL4-4 with M82 to genetically characterize the FNC gene and this showed that a single dominant gene determined fruit netted-cracking. Further map-based cloning narrowed down the FNC locus to a 230 kb region on chromosome 4. Sequencing and annotation analysis show that FNC(Solyc04 g082540) was the most likely candidate gene. Functional characterization of FNC by overexpressing FNCAC and FNCIL4-4resulted in the fruit netted-cracking phenotype, suggesting that the FNC transcript level results in the functional gain of fruit netted-cracking. These findings were further confirmed by FNC ortholog in netted-cracking pepper and melon, indicating a common regulatory mechanism in different plant species. Furthermore, cytoplasm and nucleus-localized FNC indicates increased expression of genes involved in suberin, lignin, lipid transport and cell wall metabolism. These findings provide novel genetic insights into fruit netted-cracking and offer a way to promote molecular improvement toward cracking resistant cultivars.
关键词: fine mapping / fruit netted-cracking / introgression line / transcript level
《结构与土木工程前沿(英文)》 2021年 第15卷 第6期 页码 1317-1336 doi: 10.1007/s11709-021-0763-3
关键词: square concrete filled tubes confine-stiffening confine-strengthening fractal cracking fracture
Hierarchical approach for fatigue cracking performance evaluation in asphalt pavements
Ibrahim ONIFADE, Yared DINEGDAE, Björn BIRGISSON
《结构与土木工程前沿(英文)》 2017年 第11卷 第3期 页码 257-269 doi: 10.1007/s11709-017-0410-1
关键词: fatigue cracking energy based crack initiation mechanistic approach pavement analysis
《结构与土木工程前沿(英文)》 页码 1163-1187 doi: 10.1007/s11709-023-0987-5
关键词: cast-in anchor concrete cone capacity geopolymer concrete head size surface crack anchor profile
李再婷
《中国工程科学》 1999年 第1卷 第2期 页码 67-71
催化裂解是以石油中的重油为原料,用催化方法生产丙烯等基本有机化工原料的技术。在世界上我国首先研究开发了此新工艺及催化剂,并于1990年成功进行了工业示范。迄今,国内外已有七套应用该技术的工业装置建成并投产。生产的丙烯等化工原料已分别用来合成了高质量的聚丙烯、聚乙烯及丙烯腈等化学品。目前催化裂解已可应用更重质的原料,如常压渣油,并开发出能适合不同原料的多种催化剂。文中重点介绍了应用该技术在泰国建成的一套催化裂解装置的生产情况。
A novel fluid catalytic cracking process for maximizing
Youhao Xu, Shouye Cui
《化学科学与工程前沿(英文)》 2018年 第12卷 第1期 页码 9-23 doi: 10.1007/s11705-017-1696-1
关键词: gasoline iso-paraffins FCC desulfurization octane number
靶向生产低碳烯烃的催化裂化技术——反应机理、生产方案和工艺展望 Review
许友好, Yanfen Zuo, Wenjie Yang, Xingtian Shu, Wei Chen, Anmin Zheng
《工程(英文)》 2023年 第30卷 第11期 页码 100-109 doi: 10.1016/j.eng.2023.02.018
Light olefins are important organic building blocks in the chemicals industry. The main low-carbon olefin production methods, such as catalytic cracking and steam cracking, have considerable room for improvement in their utilization of hydrocarbons. This article provides a thorough overview of recent studies on catalytic cracking, steam cracking, and the conversion of crude oil processes. To maximize the production of light olefins and reduce carbon emissions, the perceived benefits of various technologies are examined. Taking olefin generation and conversion as a link to expand upstream and downstream processes, a targeted catalytic cracking to olefins (TCO) process is proposed to meet current demands for the transformation of oil refining into chemical production. The main innovations of this process include a multiple feedstock supply, the development of medium-sized catalysts, and a diameter-transformed fluidized-bed reactor with different feeding schemes. In combination with other chemical processes, TCO is expected to play a critical role in enabling petroleum refining and chemical processes to achieve low carbon dioxide emissions.
关键词: Light olefins Steam cracking Catalytic cracking TCO process Oil processing revolution
YAN Pingxiang, MENG Xianghai, GAO Jinsen, XU Chunming, SUI Zhiyu
《化学科学与工程前沿(英文)》 2008年 第2卷 第1期 页码 74-79 doi: 10.1007/s11705-008-0016-1
Formation of coke in thermal cracking of jet fuel under supercritical conditions
ZHU Yuhong, YU Caixiang, LI Zimu, MI Zhentao, ZHANG Xiangwen
《化学科学与工程前沿(英文)》 2008年 第2卷 第1期 页码 17-21 doi: 10.1007/s11705-008-0024-1
关键词: dispersive spectroscopy different extraction calorimetry filamentous
Yao CHEN, Jinhui LI, Huabo DUAN, Zhishi WANG
《环境科学与工程前沿(英文)》 2011年 第5卷 第2期 页码 167-174 doi: 10.1007/s11783-011-0308-4
关键词: waste printed wiring board (PWB) residue steam thermal-crack mechanical properties
Catalytic cracking of endothermic fuels in coated tube reactor
LI Jia, ZOU Jijun, ZHANG Xiangwen, GUO Wei, MI Zhentao
《化学科学与工程前沿(英文)》 2008年 第2卷 第2期 页码 181-185 doi: 10.1007/s11705-008-0032-1
关键词: HZSM-5 self-made ceramic-like gas-aided Conversion Suspensoid
Chunli ZHANG, Taotao WANG, Jing LI, Danqiu ZHANG, Qingmin XIE, Shoaib MUNIR, Jie YE, Hanxia LI, Yongen LU, Changxian YANG, Bo OUYANG, Yuyang ZHANG, Junhong ZHANG, Zhibiao YE
《农业科学与工程前沿(英文)》 页码 280-291 doi: 10.15302/J-FASE-2020374
关键词: fine mapping fruit netted-cracking introgression line transcript level
Instantaneous deflection of light-weight concrete slabs
Behnam VAKHSHOURI, Shami NEJADI
《结构与土木工程前沿(英文)》 2017年 第11卷 第4期 页码 412-423 doi: 10.1007/s11709-017-0416-8
关键词: instantaneous deflection light-weight concrete expanded polystyrene effective moment of inertia cracking moment moment capacity service moment
蒸汽裂解建模中的人工智能——详细流出物预测深度学习算法 Article
Pieter P. Plehiers, Steffen H. Symoens, Ismaël Amghizar, Guy B. Marin, Christian V. Stevens, Kevin M. Van Geem
《工程(英文)》 2019年 第5卷 第6期 页码 1027-1040 doi: 10.1016/j.eng.2019.02.013
化工过程可以从快速准确的流出物成分预测中获益良多,以进行工厂设计、控制和优化。工业4.0革命宣称,通过将机器学习引入这些领域,就可实现可观的经济收益和环境收益。高频优化和工艺控制的瓶颈往往是按要求对原料和产品等进行详细分析所需的时间。为解决这些问题,已为最大的化工品生产工艺——蒸汽裂解——建立由四个深度学习人工神经网络(DL ANNs)组成的框架。所提出的方法可根据有限数量的石脑油商业指标和可快速获得的工艺特性,确定石脑油原料的详细特性和蒸汽裂解炉流出物的详细组成。根据沸点曲线上的三个点和PIONA(烷烃、异链烷烃、烯烃、环烷烃和芳香烃)特性预测石脑油的详细特性。若沸点不可用,则同时对沸点进行估计。即使在估计沸点的情况下,所建立的深度学习人工神经网络仍优于已有的香农信息熵最大化和传统人工神经网络等方法。对于原料重构,在测试集得到的平均绝对误差(MAE)为0.3 wt%,流出物预测的平均绝对误差为0.1 wt%。结合所有网络时——使用前一网络的输出作为下一网络的输入——流出物平均绝对误差增大至0.19 wt%。除这些网络具有高精度外,主要好处是获得预测值所需的计算成本可忽略不计。在标准的英特尔i7处理器上,预测值以毫秒为单位。COILSIM1D等商业软件在精度方面表现稍好一些,但每个反应所需的中央处理器时间以秒为单位。速度大大提高,精度损失极小,使所提出的框架非常适用于连续监控难以获取的工艺参数,且非常适用于预想的高频实时优化(RTO)策略或工艺控制。然而,缺乏基本依据意味着几乎完全丧失基本的理解,而这并不总是被工程界广泛接受。此外,对于那些与训练集内石脑油非常不同的石脑油,所建立网络的性能有明显下降。
标题 作者 时间 类型 操作
Effects of microfine aggregate in manufactured sand on bleeding and plastic shrinkage cracking of concrete
Branavan ARULMOLY; Chaminda KONTHESINGHA; Anura NANAYAKKARA
期刊论文
FUNCTIONAL GAIN OF FRUIT NETTED-CRACKING IN AN INTROGRESSION LINE OF TOMATO WITH HIGHER EXPRESSION OF
期刊论文
Theoretical study on the confine-stiffening effect and fractal cracking of square concrete filled steel
期刊论文
Hierarchical approach for fatigue cracking performance evaluation in asphalt pavements
Ibrahim ONIFADE, Yared DINEGDAE, Björn BIRGISSON
期刊论文
Influence of surface cracking, anchor head profile, and anchor head size on cast-in headed anchors in
期刊论文
靶向生产低碳烯烃的催化裂化技术——反应机理、生产方案和工艺展望
许友好, Yanfen Zuo, Wenjie Yang, Xingtian Shu, Wei Chen, Anmin Zheng
期刊论文
Study on reformulation of fluid catalytic cracking gasoline and increasing production of light olefins
YAN Pingxiang, MENG Xianghai, GAO Jinsen, XU Chunming, SUI Zhiyu
期刊论文
Formation of coke in thermal cracking of jet fuel under supercritical conditions
ZHU Yuhong, YU Caixiang, LI Zimu, MI Zhentao, ZHANG Xiangwen
期刊论文
Thermal cracking of waste printed wiring boards for mechanical recycling by using residual steam preprocessing
Yao CHEN, Jinhui LI, Huabo DUAN, Zhishi WANG
期刊论文
Catalytic cracking of endothermic fuels in coated tube reactor
LI Jia, ZOU Jijun, ZHANG Xiangwen, GUO Wei, MI Zhentao
期刊论文
FUNCTIONAL GAIN OF FRUIT NETTED-CRACKING IN AN INTROGRESSION LINE OF TOMATO WITH HIGHER EXPRESSION OF
Chunli ZHANG, Taotao WANG, Jing LI, Danqiu ZHANG, Qingmin XIE, Shoaib MUNIR, Jie YE, Hanxia LI, Yongen LU, Changxian YANG, Bo OUYANG, Yuyang ZHANG, Junhong ZHANG, Zhibiao YE
期刊论文