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Nonlinear experimental response of non-conventional composite steel and concrete connection
Tobia ZORDAN, Bruno BRISEGHELLA
《结构与土木工程前沿(英文)》 2009年 第3卷 第1期 页码 42-49 doi: 10.1007/s11709-008-0058-y
关键词: composite connections nonlinear behaviour hogging moment monotonic tests
Investigation of the interior RC beam-column joints under monotonic antisymmetrical load
Fei GAO, Zhiqiang TANG, Biao HU, Junbo CHEN, Hongping ZHU, Jian MA
《结构与土木工程前沿(英文)》 2019年 第13卷 第6期 页码 1474-1494 doi: 10.1007/s11709-019-0572-0
关键词: RC beam-column joint reinforcement ratio in joint core axial compression ratio finite element test
Study of base friction simulation tests based on a complicated engineered bridge slope
Liu HE, Guang WU, Hua WANG
《结构与土木工程前沿(英文)》 2012年 第6卷 第4期 页码 393-397 doi: 10.1007/s11709-012-0174-6
关键词: base friction test slope stability evaluation bridge slope
Strain localization analyses of idealized sands in biaxial tests by distinct element method
Mingjing JIANG, Hehua ZHU, Xiumei LI,
《结构与土木工程前沿(英文)》 2010年 第4卷 第2期 页码 208-222 doi: 10.1007/s11709-010-0025-2
关键词: idealized sand strain localization numerical analyses distinct element method (DEM)
Ismael Matino, Valentina Colla, Teresa A. Branca
《化学科学与工程前沿(英文)》 2018年 第12卷 第4期 页码 718-730 doi: 10.1007/s11705-018-1771-2
For improving wastewater quality, one of the dare of steelworks is reducing cyanide in wastewater of gas washing treatment of blast furnaces. Costs of existing treatments, stringent environmental regulations and changeable composition of water from gas treatment, have led to study how available treatments can be modified and to examine new ones. Ozonation is one of cyanide treatments, tested within a European project. A process model was set up with Aspen Plus®, to assess operating conditions and wastewater distinctive characteristics and to demonstrate treatment robustness. Process was modeled by theoretical reactors, taking into account all more affecting reactions. A genetic algorithm was exploited to find kinetic parameters of these reactions. After validation, the model was used to analyse scenarios, by considering also real contexts. Pilot tests were extended, process knowledge was enhanced and suggestions were obtained. To promote cyanide removal with ozone, temperature and pH values were 30°C and 10, respectively. With an ozone (mg/h)/water (L/h) ratio of 100 mg/L, batch mode ensure reaching cyanide regulation limit (0.2 mg/L) after maximum 4.5 h, if initial amount was less than 20 mg/L. Higher removal was obtained than in continuous mode due to constraints related to this last run. Higher wastewater contamination needed further time and more ozone.
关键词: blast furnace cyanide removal gas washing water modeling and simulation ozonation
牛笑笛,杨广庆,刘伟超
《中国工程科学》 2017年 第19卷 第6期 页码 86-91 doi: 10.15302/J-SSCAE-2017.06.013
砂质边坡稳定性差,常规防护措施的防护效果较差。为了有效地对砂质边坡进行防护,笔者研制了一种新型固砂剂——TD–1。为了验证TD–1的固砂效果,笔者进行了配比优化试验、渗透试验、干湿循环试验和现场试验。试验结果表明:在磷酸硅、硅酸锂、硅溶胶掺入比例相同的条件下,固砂试样的强度随钾水玻璃模数的增加而增大;钾水玻璃的最佳添加量为固化砂质量的3%;加入改性剂的试样,强度有明显的增长;使用低模数钾水玻璃的试样,渗透能力相对更好;随着干湿循环次数的增加,试样的强度逐渐下降,经过3次循环之后,试样的强度基本趋于稳定。TD–1固砂剂还可与客土喷播技术结合使用,进行边坡绿化防护,固化产物有利于植物生长。
王吉坤,周廷熙,吴锦梅
《中国工程科学》 2005年 第7卷 第1期 页码 60-64
高铁闪锌矿经二段加压浸出,锌浸出率97.09%,铁浸出率15.2%,元素硫产率93%,浸出液残酸3.95g/L,经简单中和、净化,生产合格硫酸锌新液供应锌电积。为了研究比较,闪锌矿经一段加压浸出,锌的浸出率98.09%,铁浸出率37.88%,元素硫产率96%,浸出液残酸高(46.4g/L),可并入现有传统湿法炼锌工艺流程处理。
Seismic tests of post-tensioned self-centering building frames with column and slab restraints
Chung-Che CHOU, Jun-Hen CHEN
《结构与土木工程前沿(英文)》 2011年 第5卷 第3期 页码 323-334 doi: 10.1007/s11709-011-0119-5
关键词: post-tensioned frame frame expansion column restraint sliding slab frame test shake table test
Hassan YOUSEFI, Alireza TAGHAVI KANI, Iradj MAHMOUDZADEH KANI, Soheil MOHAMMADI
《结构与土木工程前沿(英文)》 2020年 第14卷 第2期 页码 446-472 doi: 10.1007/s11709-019-0605-8
关键词: ambient vibration test high level noise iterative signal enhancement wavelet cross and autocorrelation of wavelets
Axial compression tests and numerical simulation of steel reinforced recycled concrete short columns
Hui MA; Fangda LIU; Yanan WU; Xin A; Yanli ZHAO
《结构与土木工程前沿(英文)》 2022年 第16卷 第7期 页码 817-842 doi: 10.1007/s11709-022-0844-y
关键词: steel reinforced recycled concrete CFRP strips short columns axial compression behavior recycled aggregate concrete
常海娟,刘猛,庞丽萍,杨鹏 ,王浚
《中国工程科学》 2009年 第11卷 第2期 页码 65-69
用一年的时间随青藏铁路列车采集了2 882样本数据,随机抽取其中的1 693份,利用非参数检验及 相关分析的方法从统计学上对可能影响耐缺氧反应的因素做分析,最后发现以前到高原时缺氧反应严重程 度、性别、吸烟习惯、肥胖度、年龄5个因素对个体的抗缺氧能力有着不可忽视的影响。该结论不仅可以为减 少旅客高原反应提供指导性意见,为高原旅客列车供氧系统设计和改进提供重要依据,也可以为后续的医学 研究提供统计学基础。
Model testing of tripod caisson foundations in silty clay subjected to eccentric lateral loads
《结构与土木工程前沿(英文)》 2023年 第17卷 第3期 页码 467-476 doi: 10.1007/s11709-023-0933-6
关键词: tripod caisson foundation silty clay eccentric lateral capacity model tests
《结构与土木工程前沿(英文)》 2022年 第16卷 第1期 页码 99-116 doi: 10.1007/s11709-021-0799-4
关键词: Cocamide Diethanolamide bitumen modification rheology Superpave tests
《农业科学与工程前沿(英文)》 2022年 第9卷 第1期 doi: 10.15302/J-FASE- 2021390
It has previously been shown that tryptophan, the biosynthesis precursor of Peganum harmala alkaloids, and its derivatives have anti-TMV activity both in vitro and in vivo. Further exploration of this led to the identification of NK0238 as a highly effective agent for the prevention and control of diseases caused by plant viruses, but the existing routes are unsuitable for its large-scale synthesis. This study optimized a route for two-step synthesis of this virucide candidate via reaction of l-tryptophan with triphosgene to produce l-tryptophan-N-carboxylic anhydride, which then reacts with n-octylamine to give NK0238 at up to 94% yield and nearly 97% HPLC purity. In addition, the route was used for the preparation of NK0238 on a>40 g scale permitting further assessment of its antivirus activity in the greenhouse and field experiments, and toxicity tests. NK0238 exhibited useful antiviral activities against a variety of viruses both in greenhouse and field experiments. The toxicity tests showed that NK0238 was not acutely toxic to birds, fish, honey bees and silkworms. The optimized route provides a solid foundation for its large-scale synthesis and subsequent efficacy and toxicity studies, its excellent activity and safety make NK0238 a promising drug candidate for further development.
标题 作者 时间 类型 操作
Nonlinear experimental response of non-conventional composite steel and concrete connection
Tobia ZORDAN, Bruno BRISEGHELLA
期刊论文
Investigation of the interior RC beam-column joints under monotonic antisymmetrical load
Fei GAO, Zhiqiang TANG, Biao HU, Junbo CHEN, Hongping ZHU, Jian MA
期刊论文
Study of base friction simulation tests based on a complicated engineered bridge slope
Liu HE, Guang WU, Hua WANG
期刊论文
Strain localization analyses of idealized sands in biaxial tests by distinct element method
Mingjing JIANG, Hehua ZHU, Xiumei LI,
期刊论文
Extension of pilot tests of cyanide elimination by ozone from blast furnace gas washing water through
Ismael Matino, Valentina Colla, Teresa A. Branca
期刊论文
Seismic tests of post-tensioned self-centering building frames with column and slab restraints
Chung-Che CHOU, Jun-Hen CHEN
期刊论文
enhancement for implementation in purification of modal frequency for extremely noisy ambient vibration tests
Hassan YOUSEFI, Alireza TAGHAVI KANI, Iradj MAHMOUDZADEH KANI, Soheil MOHAMMADI
期刊论文
Axial compression tests and numerical simulation of steel reinforced recycled concrete short columns
Hui MA; Fangda LIU; Yanan WU; Xin A; Yanli ZHAO
期刊论文
Investigation of effects of Cocamide Diethanolamide chemical on physical and rheological properties of bituminous binder
期刊论文