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690 results on '"He, Dandan"'

55. DLENSO: A Deep Learning ENSO Forecasting Model

Author

He, Dandan, Lin, Pengfei, Liu, Hailong, Ding, Lei, Jiang, Jinrong, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Woeginger, Gerhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Nayak, Abhaya C., editor, and Sharma, Alok, editor

Published
2019
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67. Rheological model of cement-based material slurry with different water-cement ratio and temperature.

Author

Dong, Hongjing, Chen, Xi, Yang, Guangying, He, Dandan, Dai, Ying, and He, Pengfei

Subjects
SLURRY, HERSCHEL-Bulkley model, STRAINS & stresses (Mechanics), ORDINARY differential equations, NAVIER-Stokes equations, SHEARING force
Abstract

Purpose: The purpose of this paper is to obtain a constitutive model of cement-based material in the rheological stage, which owns the different water-cement ratio (w/c) and temperature and have a significant impact on the workability of concrete materials. Design/methodology/approach: It is introduced a modified Arrhenius equation into the Herschel–Bulkley model, which is widely applied in rheological analysis and constructed an ordinary differential equation (ODE) of w/c from the Navier–Stokes equation. By solving the ODE, an approximate constitutive relation of cement-based materials included w/c and temperature is derived. Compared with the experimental results, the present model is validated. Findings: The shear stress and shear rate curves with different w/c and temperature are simulated by the present method, and the present model can be applied to analyze the changes of apparent viscosity in cement-based material slurry as the w/c and temperature varying. Originality/value: This work gives a mathematical model, which can effectively approximate the shear stress–shear rate relation with different w/c and temperature in the rheological stage of cement-based material. [ABSTRACT FROM AUTHOR]

Published
2024
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73. A Draft Sequence for the Genome of the Domesticated Silkworm (Bombyx mori)

Author

Xia, Qingyou, Zhou, Zeyang, Lu, Cheng, Cheng, Daojun, Dai, Fangyin, Li, Bin, Zhao, Ping, Zha, Xingfu, Cheng, Tingcai, Chai, Chunli, Pan, Guoqing, Xu, Jinshan, Liu, Chun, Lin, Ying, Qian, Jifeng, Hou, Yong, Wu, Zhengli, Li, Guanrong, Pan, Minhui, Li, Chunfeng, Shen, Yihong, Lan, Xiqian, Yuan, Lianwei, Li, Tian, Xu, Hanfu, Yang, Guangwei, Wan, Yongji, Zhu, Yong, Yu, Maode, Shen, Weide, Wu, Dayang, Xiang, Zhonghuai, Yu, Jun, Wang, Jun, Li, Ruiqiang, Shi, Jianping, Li, Heng, Li, Guangyuan, Su, Jianning, Wang, Xiaoling, Li, Guoqing, Zhang, Zengjin, Wu, Qingfa, Li, Jun, Zhang, Qingpeng, Wei, Ning, Xu, Jianzhe, Sun, Haibo, Dong, Le, Liu, Dongyuan, Zhao, Shengli, Zhao, Xiaolan, Meng, Qingshun, Lan, Fengdi, Huang, Xiangang, Li, Yuanzhe, Fang, Lin, Li, Changfeng, Li, Dawei, Sun, Yongqiao, Zhang, Zhenpeng, Yang, Zheng, Huang, Yanqing, Qi, Qiuhui, He, Dandan, Huang, Haiyan, Zhang, Xiaowei, Wang, Zhiqiang, Li, Wenjie, Cao, Yuzhu, Yu, Yingpu, Yu, Hong, Li, Jinhong, Ye, Jiehua, Chen, Huan, Zhou, Yan, Liu, Bin, Wang, Jing, Ye, Jia, Ji, Hai, Li, Shengting, Ni, Peixiang, Zhang, Jianguo, Zhang, Yong, Zheng, Hongkun, Mao, Bingyu, Wang, Wen, Ye, Chen, Li, Songgang, Wang, Jian, Wong, Gane Ka-Shu, and Yang, Huanming

Published
2004

83. Green tissue-targeted expression of the Cry1Ab/c gene in transgenic maize using the Cre/loxP system as an alternative strategy against lepidopteran pests.

Author

Yuan, Guangsheng, Shi, Jiaxin, Shi, Jiahao, He, Dandan, Li, Youliang, Du, Juan, Zou, Chaoying, Ma, Langlang, Pan, Guangtang, and Shen, Yaou

Subjects
TRANSGENE expression, GENE expression, FALL armyworm, GENETIC techniques, GENETIC engineering, CORN
Abstract

Genetically modified (GM) proteins in edible tissues of transgenic maize are of intense public concern. We provided a Cre/ lox P-based strategy for manipulating the expression of transgenes in green tissues while locking them in nongreen tissues. First, the Cre gene was driven by the green tissue-specific promoter Zm1rbcS to generate transgenic maize KEY. Meanwhile, a gene cassette containing a Nos terminator (NosT) in front of the Cry1Ab/c gene was driven by the strong promoter ZmUbi to generate another transgenic maize LOCK. By crossing KEY and LOCK plants, the expressed Cre recombinase under the control of the Zm1rbcS promoter from KEY maize accurately removed the NosT of LOCK maize. Consequently, the expression of blocked Cry1Ab/c was enabled in specific green tissues in their hybrids. The expression level and concentration of Cry1Ab/c were observed using a strategy with high specific accumulation in green tissues (leaf and stem). Still, only a small or absent amount was observed in root and kernel tissues. Furthermore, we assessed the bioactivity of transgenic maize against 2 common lepidopteran pests, Ostrinia furnacalis and Spodoptera frugiperda, in the laboratory and field. The transgenic plants showed high plant resistance levels against the 2 pests, with mortality rates above 97.2% and damage scales below 2.2 compared with the control group. These findings are significant for exploring novel genetic engineering techniques in GM maize and providing a feasible strategy for transgenes avoiding expression in edible parts. In addition, implementing the Cre/ lox P - mediated system could relieve public sentiment toward the biosafety of GM plants. [ABSTRACT FROM AUTHOR]

Published
2023
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97. Additional file 1 of Prevalence and molecular characterization of oqxAB in clinical Escherichia coli isolates from companion animals and humans in Henan Province, China

Author

Liu, Baoguang, Wu, Hua, Zhai, Yajun, He, Zhipei, Sun, Huarun, Cai, Tian, He, Dandan, Liu, Jianhua, Wang, Shanmei, Pan, Yushan, Yuan, Li, and Hu, Gongzheng

Abstract

A list of the eleven tested antimicrobials, their classes, their concentrations, and their breakpoints used for susceptibility testing of E. coli. (DOC 58 kb)

Published
2023
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99. Green tissue-targeted expression of the Cry1Ab/cgene in transgenic maize using the Cre/loxP system as an alternative strategy against lepidopteran pests

Author

Yuan, Guangsheng, Shi, Jiaxin, Shi, Jiahao, He, Dandan, Li, Youliang, Du, Juan, Zou, Chaoying, Ma, Langlang, Pan, Guangtang, and Shen, Yaou

Abstract

Genetically modified (GM) proteins in edible tissues of transgenic maize are of intense public concern. We provided a Cre/loxP-based strategy for manipulating the expression of transgenes in green tissues while locking them in nongreen tissues. First, the Cregene was driven by the green tissue-specific promoter Zm1rbcSto generate transgenic maize KEY. Meanwhile, a gene cassette containing a Nosterminator (NosT) in front of the Cry1Ab/cgene was driven by the strong promoter ZmUbito generate another transgenic maize LOCK. By crossing KEY and LOCK plants, the expressed Cre recombinase under the control of the Zm1rbcSpromoter from KEY maize accurately removed the NosTof LOCK maize. Consequently, the expression of blocked Cry1Ab/c was enabled in specific green tissues in their hybrids. The expression level and concentration of Cry1Ab/cwere observed using a strategy with high specific accumulation in green tissues (leaf and stem). Still, only a small or absent amount was observed in root and kernel tissues. Furthermore, we assessed the bioactivity of transgenic maize against 2 common lepidopteran pests, Ostrinia furnacalisand Spodoptera frugiperda,in the laboratory and field. The transgenic plants showed high plant resistance levels against the 2 pests, with mortality rates above 97.2% and damage scales below 2.2 compared with the control group. These findings are significant for exploring novel genetic engineering techniques in GM maize and providing a feasible strategy for transgenes avoiding expression in edible parts. In addition, implementing the Cre/loxP-mediated system could relieve public sentiment toward the biosafety of GM plants.

Published
2023
Full Text
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