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243 results on '"Zhu, Zhengjie"'

51. Prognostic Significance of Cuproptosis-Related Gene Signatures in Breast Cancer Based on Transcriptomic Data Analysis

Author

Zhou, Zizhen, primary, Deng, Jinhai, additional, Pan, Teng, additional, Zhu, Zhengjie, additional, Zhou, Xiulan, additional, Lv, Chunxin, additional, Li, Huanxin, additional, Peng, Weixiong, additional, Lin, Bihai, additional, Cai, Cuidan, additional, Wang, Huijuan, additional, Cai, Yufeng, additional, Wei, Fengxiang, additional, and Zhou, Guanglin, additional

Published
2022
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54. Research on Curriculum Examination Mode of Cultivating Students’ Independent Learning Ability – Taking Hotel Management Major (Specialty Direction on Tobacco) as an Example

Author

Zhu Zhengjie and Liu Lin

Subjects
Health (social science), ComputingMilieux_THECOMPUTINGPROFESSION, Health Policy, ComputingMilieux_COMPUTERSANDEDUCATION, Public Health, Environmental and Occupational Health
Abstract

Scientific and reasonable examination mode can not only make effective evaluation and feedback, but also play an important role in cultivating students' good learning habits and shaping their social and vocational adaptability. Meanwhile, it is also an important method of cultivating students' innovative spirit and creative ability. Specialty direction on tobacco emphasizes cultivating senior disciplinary talents who will engage in tobacco promotion and rational use, tobacco marketing and tobacco enterprise management. So it is necessary to practice various and effective examination modes to make students master the knowledge they have learned well and truly achieve the aim of professional training. Thus the students may become qualified talents with professional quality of tobacco industry.

Published
2021

84. Solution of bubble number density with breakage and coalescence in a bubble column by Least-Squares Method

Author

Zhu, Zhengjie, Dorao, Carlos A., and Jakobsen, Hugo A.

Subjects
Least squares -- Methods, Differential equations, Nonlinear -- Evaluation, Engineering and manufacturing industries
Abstract

Byline: Zhengjie Zhu, Carlos A. Dorao, Hugo A. Jakobsen A steady-state model has been built for an air-water bubble column. The bubble number density constitutive equation has been formulated through integrating the bubble transport equation. Proper kernels for bubble breakage and coalescence rate have been chosen. The momentum balance of the gas phase is included in the model which leads to a set of non-linear differential equations. The model has been successfully solved by using the Least-Squares Method (LSM) with high accuracy and fast convergence. The successive iteration has been applied to the linearised equation set. The model shows excellent agreements with experimental data.

Published
2009

85. Discovery of abnormal positive values of carbon isotope of carbonate sediments from Lake Caohai, Guizhou Province and their implications

Author

Zeng Yan, Chen Jingan, Ren Shicong, LI Yanjun, Li Hang, and Zhu Zhengjie

Subjects
chemistry.chemical_classification, δ13C, Ecology, Fractionation, Aquatic Science, Photosynthesis, Pollution, Isotopes of oxygen, chemistry.chemical_compound, chemistry, Isotopes of carbon, Environmental chemistry, Aquatic plant, Earth and Planetary Sciences (miscellaneous), Carbonate, Organic matter, Geology, Water Science and Technology
Abstract

Carbon isotopes(δ13C) of carbonate from sediment core has been measured in Lake Caohai,Guizhou Province,southwest China.The results showed that δ13C values varied between-14.25‰ and 23.10‰,which was the largest amplitude of carbon isotope variations and the highest positive values discovered so far in lacusrine carbonate sediments.On the basis of combination with oxygen isotope,organic matter and carbonate content proxies,we suggested that the carbon isotope of carbonate from Lake Caohai was controlled by photosynthesis/respiration of aquatic plants,and the input of bacteria to carbon isotope fractionation of organic matter might be responsible for the abnormal positive δ13C values in Lake Caohai.Therefore,much attention should be paid to the carbonate δ13C in Lake Caohai in the future research.

Published
2011

86. Distinguishing the source of carbonates from lake sediments of Lake Chenghai, Yunnan Province

Author

Chen Jingan and Zhu Zhengjie

Subjects
Geochemistry, chemistry.chemical_element, Authigenic, Aquatic Science, Pollution, Isotopes of oxygen, Paleontology, chemistry.chemical_compound, chemistry, Paleoclimatology, Earth and Planetary Sciences (miscellaneous), Carbonate, Sedimentary rock, Precipitation, Surface runoff, Carbon, Geology, Water Science and Technology
Abstract

The research of stable carbon and oxygen isotope of Carbonate of lake sediments, is one of the most effective indices to reconstruct paleoclimatic and paleoenvironmental information. Sedimentary carbonate consists mainly of allochthonous carbonates produced by surface runoff and authigenic carbonates produced by inorganic precipitation. However, the authigenic carbonate has the paleoclimatic and paleoenvironmental meaning. Consequently, distinguishing the source of carbonate is the basis and premise for the research of sedimentary carbonates. This paper utilized various methods to prove that the carbonate in Lake Chenghai,Yunnan Province was authigenic, which provided the basis for the research of sedimentary carbonates. Lake Chenghai provides an ideal lacustrine setting for research of stable carbon and oxygen isotope to reconstruct paleoclimate, and the future research will be deserved.

Published
2009

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