Jia Chen

Ningbo University of Technology

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Trends

Author Order

Document Type

Co-Authors

Zhi‐Jiang Jiang

Ningbo University of Technology

Zhanghua Gao

Ningbo University of Technology

Jian‐Fei Bai

Ningbo University of Technology

Yongyin Huang

Heilongjiang University of Chinese Medicine

Hong Dai

Quzhou University

Chao Cao

Zhejiang University

Yujun Shi

Tianjin University of Commerce

Hongming Weng

Institute of Physics

Jiawei Han

Fudan University

Qiang Tang

Heilongjiang University of Chinese Medicine

Cooperative Institutions

Zhejiang University

Chinese Academy of Sciences

University of Chinese Academy of Sciences

Shanghai Jiao Tong University

Hangzhou Normal University

Peking University

University of Science and Technology of China

Nantong University

Ningbo University of Technology

Huazhong University of Science and Technology

Author Statistics

Papers

Citation

H-Index

i-10 index

Research Field

Amide-Assisted Acetoxylation of Vinyl C(sp²)–H Bonds by Rhodium Catalysis

Organic Letters (2014)

Wenlong Yu Jia Chen Kun Gao Zhanxiang Liu Yuhong Zhang

A direct regioselective acetoxylation of enamides has been accomplished using a combination of Cu(OAc)2 and rhodium catalyst. Cu(OAc)2 is served as the oxidant and also provides the source of acetate in the reaction.

Amide

10.1021/ol502378c

Cite

Citations (76)

An Empirical Study on the Corporate Performance Change of Top Management Turnover

WHICEB (2012)

Daolin Zha Jia Chen

The level of corporate governance directly determines the future development direction of companies. It’s known to all that the top management turnover plays an important role in corporate governance, and it can make modern company management structure perfect. Looking through available research, we may find most of all introduce different kinds of factors and economic consequences in order to discuss the relationship between corporate performance and management turnover, there are few literatures distinguish the impact on enterprise performance between general manager turnover and board chairman turnover. This paper is based on the present theories, adopting statistical analysis and empirical method in order to compare different influence on the operation performance among various types of management replacement. In the end, empirical studies indicate that the change of top management will improve companies’ performance, but it only leads to a short wealth effect, not in a long run. At the same time, we can also draw a conclusion, that is board chairman turnover makes more sensitive influence upon the enterprise performance compared to general manager turnover, therefore we should think twice before replacing board chairman.

Turnover

Empirical Research

Source

Cite

Citations (0)

Author response for "Mechanochemical Silver-Catalyzed Direct H/D Exchange on Heteroarenes"

Yun Jia Zhi‐Jiang Jiang Jiawei Han Kenan Wang Si-Han Xu

10.1039/d4ob01581a/v2/response1

Cite

Citations (0)

The Study of New Polymer-supported Borohydride Reducing Systems 3. Polymer-supported Reducing Reagent (II)

Chinese Journal of Organic Chemistry (1989)

Jia Chen

China-made ion exchange resin D 151 -cooH reacts with sodium boronhydride in glyme at 65℃, to give polymer-supported reagent, Na~+ [-coo(BH_3)]~-(Ⅲ). Which can reduce different kinds of carbonyl compounds with high yields. It was found that the resin used once has a better reducing property than the original One,

Sodium borohydride

Borohydride

Reducing agent

Ion-exchange resin

Source

Cite

Citations (0)

Effect of selenium doping on the superconductivity of Nb2Pd(S1−xSex

Physical Review B (2013)

Chuanning Niu Jinhu Yang Y. K. Li Bin Chen Nan Zhou

We study the isovalent substitution effect by partially introducing Se on the S site in the newly discovered superconductor Nb${}_{2}$PdS${}_{5}$ (${T}_{c}\ensuremath{\sim}$ 6 K) whose upper critical field is found to be far above its Pauli paramagnetic limit. In this Nb${}_{2}$Pd(S${}_{1\ensuremath{-}x}$Se${}_{x}$)${}_{5}$ (0 $\ensuremath{\le}$ $x$ $\ensuremath{\le}$ 0.8) system, superconductivity is systematically suppressed by the Se concentration and ultimately disappears when $x\ensuremath{\ge}$ 0.5, after which a semiconductinglike ground state emerges. In spite of the considerably reduced ${T}_{c}$ with Se doping, the ratio of the upper critical field ${H}_{c2}$ to ${T}_{c}$ remains unaffected. Moreover, the size of the heat capacity jump at ${T}_{c}$ is smaller than that expected for a BCS superconductor, implying that a strong-coupling theory cannot be the origin of this large upper critical field. In addition, the low-lying quasiparticle excitations are consistent with a nodeless gap opening over the Fermi surface. These results combined impose severe constraints on any theory of exotic superconductivity in this system.

Critical field

Pauli exclusion principle

10.1103/physrevb.88.104507

Cite

Citations (36)

Orthorhombic carbon oC24: A novel topological nodal line semimetal

Carbon (2018)

Zhenzhen Li Jia Chen Simin Nie Lifang Xu Hiroshi Mizuseki

Brillouin zone

Orthorhombic crystal system

Carbon fibers

10.1016/j.carbon.2018.03.003

Cite

Citations (54)

The Application of CFD in Wood Drying Kiln System Identification

Applied Mechanics and Materials (2013)

Li Jun Yu Jing Sun Jia Chen Hui Wang

As wood drying kiln system has the nonlinear characteristics of a large lag, multivariable, large inertia and strong coupling. It is difficult to establish an accurate mathematical model of the wood drying kiln system by using traditional mathematical Modeling method. The data of wood drying kiln is drawn by CFD-Fluent, and the translate function of the control system is obtained by Matlab system identification. The simulation results show that the method has good accuracy, and can meet the control requirements of the system.

10.4028/www.scientific.net/amm.391.386

Cite

Citations (0)

Synthesis of Carboxaldehyde Hydrazone Derivatives Containing 1H-1,2,4-triazole and Thiazole

Chinese Journal of Applied Chemistry (2007)

Jia Chen

A series of new carboxaldehyde thiosemicarbazones was synthesized by the condensation reaction of 2-phenyl-1 ,2,3-triazol-4-carboxaldehyde with thiosemicarbazide, the product reacted with five substitutedα-bromoacetophenone orα-bromo-α-( 1H-1 ,2,4-triazol-1-yl) acetophenone subsequently in EtOH under refluxing to afford a series of carboxaldehyde hydrazone derivatives. Their structures were confirmed by elemental analysis, IR, 1H NMR, and MS spectra. The biological test results show that most of these compounds have no antiviral and fungicidal activity.

Hydrazone

Thiazole

Acetophenone

Proton NMR

Condensation reaction

Triazole

Source

Cite

Citations (0)

A case analysis of partial discharge detection of 252kV GIS during AC withstand voltage test

2022 IEEE International Conference on High Voltage Engineering and Applications (ICHVE) (2022)

Wang Hui HU Changmeng SHI Guang Jia Chen

GIS equipment has superior performance and less maintenance workload, and is widely used in main power grid with the voltage level of 220kV and above. Carrying out AC withstand voltage test for GIS is the last process to inspect the production and installation quality, so as to ensure the smooth operation of the equipment. This paper has introduced a case of partial discharge detection of 252kV GIS during AC withstand voltage test, analyzed the partial discharge detection and positioning process carried out during the test in detail, and verified the accuracy of the detection and positioning result through inspection and disassembly test by returning to the factory, which provides a certain reference for quality evaluation of GIS before putting into operation.

Dielectric withstand test

Factory (object-oriented programming)

Power grid

10.1109/ichve53725.2022.9961348

Cite

Citations (0)

Translocation of a looped polymer threading through a nanopore

Soft Matter (2021)

Jia Chen Xian Chen Li‐Zhen Sun Xiaojun Xu Meng‐Bo Luo

Translocation of looped polymers shows six translocation pathways with different probabilities, translocation times, and current blockade profiles. The translocation of a looped polymer is different from linear or pristine loop polymers.

Nanopore

Threading (protein sequence)

10.1039/d1sm00007a

Cite

Citations (3)