Adsorption Behaviors of As (III) from Aqueous Solutions on Ferric Hydroxide

Jincheng Li,Wenxiang Xia,Jie Li, Wei li,Xingchuan Xiao,Zhenxia Wang,Peng Li 한국도시환경학회 2010 한국도시환경학회지 Vol.10 No.2

AUTOSAR 마이그레이션(Migration)을 위한 레거시 ECU 소프트웨어 시스템 분석 방법

( Li Jincheng ),류기열 ( Ki-yeol Ryu ),이정태 ( Jungtae Lee ) 한국정보처리학회 2014 한국정보처리학회 학술대회논문집 Vol.21 No.2

AUOTSAR(Automotive Open system Architecture)는 자동차 ECU(Electronic Control Unit)에 내장되는 소프트웨어에 대한 표준 구조로서, ECU 소프트웨어의 품질 향상은 물론, 개발 및 관리 비용의 절감에 기여하는 등 많은 장점을 갖는다. AUTOSAR 의 이런 장점 때문에 많은 자동차 회사들이 ECU 소프트웨어에 AUTOSAR 적용을 추진하고 있다. 이에 따라 기존 레거시 ECU 소프트웨어 시스템을 AUTOSAR 표준에 맞는 ECU 소프트웨어 시스템으로 변환하는 방법에 대한 관심도 높아지고 있다. 그 이유는 이미 많은 ECU 레거시 소프트웨어 시스템들이 개발되어 사용되고 있으며, 이들에게는 이미 기능 및 안정성 검증을 위하여 많은 시간과 비용이 투자하여 되어 있다. 따라서 ECU 소프트웨어 시스템에 AUTOSAR 를 적용하는 경우 기존의 레거시 소프트웨어 시스템을 재사용할 수 있으면 생산성 및 품질 면에서 많은 장점을 갖는다. 본 연구에서는 C 언어로 작성된 기존의 ECU 소프트웨어 시스템을 AUTOSAR 플랫폼에서 재사용할 수 있도록 하기 위하여, 기존의 레거시 ECU 소프트웨어 시스템을 AUTOSAR 플랫폼으로 마이그레이션하는 방법에 대하여 연구하였다. 마이그레이션 과정은 크게 두 단계로 나누어 지는데, 이는 레거시 소프트웨어 시스템을 분석하여 마이그레이션이 가능하도록 기능별로 분해하는 것과, 분해된 구성 요소들을 AUTOSAR 플랫폼에 맞는 구 조로 재구성하는 과정이다. 본 논문에서는 이중 첫 번째 과정인 레거시 소프트웨어 시스템의 분석 및 기능별 분해 방법을 제시하고자 한다.

Intestinal segment and vitamin D3 concentration affect gene expression levels of calcium and phosphorus transporters in broiler chickens

Jincheng Han,Lihua Wu,Xianliang Lv,Mengyuan Liu,Yan Zhang,Lei He,Junfang Hao,Li Xi,Hongxia Qu,Chuanxin Shi,Zhiqiang Li,Zhixiang Wang,Fei Tang,Yingying Qiao 한국축산학회 2023 한국축산학회지 Vol.65 No.2

Two experiments were conducted in this research. Experiment 1 investigated the spatial expression characteristics of calcium (Ca) and phosphorus (P) transporters in the duodenum, jejunum, and ileum of 21-day-old broilers provided with adequate nutrient feed. Experiment 2 evaluated the effects of dietary vitamin D3 (VD3) concentration (0, 125, 250, 500, 1,000, and 2,000 IU/kg) on growth performance, bone development, and gene expression levels of intestinal Ca and P transporters in 1–21-day-old broilers provided with the negative control diet without supplemental VD3. Results in experiment 1 showed that the mRNA levels of calcium- binding protein 28-kDa (CaBP-D28k), sodium-calcium exchanger 1 (NCX1), plasma membrane calcium ATPase 1b (PMCA1b), and IIb sodium-phosphate cotransporter (NaPi-IIb) were the highest in the broiler duodenum. By contrast, the mRNA levels of inorganic phosphate transporter 1 (PiT-1) and 2 (PiT-2) were the highest in the ileum. Results in experiment 2 showed that adding 125 IU/kg VD3 increased body weight gain (BWG), feed intake (FI), bone weight, and percentage and weight of Ca and P in the tibia and femur of 1–21-day-old broilers compared with the negative control diet (p < 0.05). The rise in dietary VD3 levels from 125 to 1,000 IU/kg further increased the BWG, FI, and weights of the bone, ash, Ca, and P (p < 0.05). No difference in growth rate and leg bone quality was noted in the broilers provided with 1,000 and 2,000 IU/kg VD3 (p > 0.05). Supplementation with 125–2,000 IU/kg VD3 increased the mRNA abundances of intestinal Ca and P transporters to varying degrees. The mRNA level of CaBP-D28k increased by 536, 1,161, and 28 folds in the duodenum, jejunum, and ileum, respectively, after adding 1,000 IU/kg VD3. The mRNA levels of other Ca and P transporters (PMCA1b, NCX1, NaPi-IIb, PiT-1, and PiT-2) increased by 0.57–1.74 folds by adding 1,000–2,000 IU/kg VD3. These data suggest that intestinal Ca and P transporters are mainly expressed in the duodenum of broilers. Moreover, the addition of VD3 stimulates the two mineral transporter transcription in broiler intestines.

Cavitation cloud dynamic characteristics of dual-chamber self-excited oscillatory waterjet

Dezheng Li,Yong Kang,Hanqing Shi,Yi Hu,Qi Liu,Hongchao Li,Jincheng Hu,Jiamin Li 한국화학공학회 2022 Korean Journal of Chemical Engineering Vol.39 No.12

Aiming to enhance self-excited oscillating cavitation jet performance, the effect of the dual-chamber nozzlestructure on the jet dynamical characteristics was designed and investigated. With high-speed camera technology,the cavitation phenomenon was investigated to analyze the area pattern and shedding period of the cavitation cloudunder different nozzle structures. The results showed that the dual-chamber nozzle significantly improved the jet cavitationstrength, and the cavitation cloud area increased by 76% and decreased the shedding period by 90% comparedwith the single-chamber nozzle. In the upstream chamber, the upper shrinkage ratio had a more drastic effect on thecavitation cloud area and shedding frequency than the lower shrinkage ratio with a more sensitive effect on the sheddingfrequency. In the downstream chamber, the outlet diameter ratio and chamber diameter were more sensitive tothe regulation of cavitation cloud shedding frequency and area, respectively, with the optimal regulation at the outletdiameter ratio of 1 and chamber length of 6 mm. The chamber diameter modulated the cavitation cloud most drasticallywith a comprehensive performance optimum at 12mm, which the area fluctuation reached 76.8%. The resultsprovide a basis for further research and application of dual-chamber nozzles.

Analytical Investigation of Beam-to-Column Endplate Connections at Elevated Temperatures

Yandi Li,Jincheng Zhao 한국강구조학회 2019 International Journal of Steel Structures Vol.19 No.2

An analytical model to estimate the complete moment-rotation curve of steel beam-to-column endplate connections is presented in this paper. The method is based on the component-based concept and is capable of predicting the behavior of connections considering the infl uence of beam axial forces and temperature variations. Signifi cant consideration is devoted to the reliable simulation of T-stub component. A recently developed T-stub model, which is based on the thin plate theory, is able to capture the force-deformation response of a T-stub assembly under fi re situations. Verifi cation of the analytical model is carried out by comparing with available experimental results of isolated connections in other literatures. The analytical model is also validated against a 3D fi nite element model, considering diff erent axial load levels at diff erent temperatures. The validation results illustrate the reliability and effi ciency of the analytical model in predicting the initial stiff ness and ultimate moment resistance of connections. However, the prediction of rotation capacity still needs some improvements, since the simulation of some basic components at elevated temperatures is not quite accurate. Also, some valuable rules are concluded on the behavior of connections subjected to diff erent beam axial loads at diff erent temperatures.

Modelling of Bolted Endplate Connections Subjected to Bending Moment and Axial Force in Fire

Yandi Li,Jincheng Zhao 대한토목학회 2018 KSCE JOURNAL OF CIVIL ENGINEERING Vol.22 No.12

This article presents an extensive application of component based method both at ambient and elevated temperatures. The analytical model is used to predict the connection behavior, with axial force in the connected beam being superposed. The formulas for the calculation of bending moment resistance and rotation stiffness are derived in the article. At the same time, two kinds of loading paths, proportional loading and non-proportional loading, are also thoroughly investigated. A total of 12 tests, in which the connection is subjected to proportional loading path, are utilized to validate the analytical model. At the same time, a 3D Finite Element Model using the ABAQUS is also presented to verify the analytical model. As to the connection under non-proportional loading path, 6 transient fire tests are chosen to verify the proposed model. Compared to the experimental results, the accuracy of the moment-rotation curves obtained from the analytical model are acceptable. Hence, the presented analytical model can be used to predict connection behavior under fire conditions, taking the influence of axial force into account.

Review of Magnetic Coupling Resonance Wireless Energy Transmission

Bin Zhu,Jincheng Li,Wenshan Hu,Xingran Gao 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.3

This paper reviews the magnetic coupling resonance wireless energy transmission from the principle, models and theories based on the development and classification of wireless energy transmission technologies. Firstly, it introduces MIT coupled mode theory and the main circuit theory models and experiments, summarizes and illustrates the characteristics of the two theories. Secondly, it introduces the worldwide research progress in this area, including the circuit theories, three-coil energy transfer systems, multi-receptor, four-coil energy transfer systems, frequency tunable resonance body, adaptive tuning and frequency division, the loss distribution, new materials, mutual inductance coupling and frequency tracking. Finally combined with the main research content of magnetically coupled resonant wireless energy transmission, it points out the existing problems and the direction for the studies of the theory and application next step.

Gene Cloning, Expression and Immunogenicity of the Protective Antigen Subolesin in Dermacentor silvarum

Yonghong Hu,Hua Zeng,Jincheng Zhang,Duo Wang,Dongming Li,Tiantian Zhang,Shujie Yang,Jingze Liu 대한기생충학열대의학회 2014 The Korean Journal of Parasitology Vol.52 No.1

An asymmetric supercapacitor with excellent cycling performance realized by hierarchical porous NiGa₂O₄ nanosheets

Liu, Shude,Hui, Kwan San,Hui, Kwun Nam,Li, Hai-Feng,Ng, Kar Wei,Xu, Jincheng,Tang, Zikang,Jun, Seong Chan The Royal Society of Chemistry 2017 Journal of Materials Chemistry A Vol.5 No.36

<▼1><P>Cycling stability of an asymmetric supercapacitor is enhanced using hierarchical porous NiGa2O4 nanosheets as cathode electrode.</P></▼1><▼2><P>Rational design of the composition and electrochemically favorable structural configuration of electrode materials are highly required to develop high-performance supercapacitors. Here, we report our findings on the design of interconnected NiGa2O4 nanosheets as advanced cathode electrodes for supercapacitors. Rietveld refinement analysis demonstrates that the incorporation of Ga into NiO leads to a larger cubic lattice parameter that promotes faster charge-transfer kinetics, enabling significantly improved electrochemical performance. The NiGa2O4 electrode delivers a specific capacitance of 1508 F g<SUP>−1</SUP> at a current density of 1 A g<SUP>−1</SUP> with a capacitance retention of 63.7% at 20 A g<SUP>−1</SUP>, together with excellent cycling stability after 10 000 charge–discharge cycles (capacitance retention of 102.4%). An asymmetric supercapacitor device was assembled by using NiGa2O4 and Fe2O3 as cathode and anode electrodes, respectively. The ASC delivers a high energy density of 45.2 W h kg<SUP>−1</SUP> at a power density of 1600 W kg<SUP>−1</SUP> with exceptional cycling stability (94.3% cell capacitance retention after 10 000 cycles). These results suggest that NiGa2O4 can serve as a new class cathode material for advanced electrochemical energy storage applications.</P></▼2>

SRIM simulation of irradiation damage by protons in InAs/GaSb type-II superlattices

Zhou Jing,Hao Ruiting,Pan Xinchang,Ren Yang,Li Junbin,Zhao Jun,Kong Jincheng 한국물리학회 2023 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.82 No.4

With the increasing maturity of material preparation and device process technology, InAs/GaSb type-II superlattices (T2SLs) have become a crucial material system for a new generation of high-performance infrared detectors, which can play a signifcant role in laser detection and satellite remote sensing applications. However, numerous particles such as protons and electrons in the complex space environment are irradiated to produce ionization and displacement damage, making the device’s performance decline and causing work failure. Therefore, in this paper, we employ the Stopping and Range of Ions in Matter (SRIM) to simulate the irradiation damage of protons on InAs/GaSb T2SLs and calculate the vacancy, energy loss, and the nuclear and electronic stopping power. Under diferent energy and irradiation fuences, which harnesses atomic displacements per atom (DPA) to investigate the irradiation damage of protons on InAs/GaSb T2SLs. The results demonstrate that the higher the proton energy, the more concentrated its trajectory in the target material, and the smaller the cross-section of phase interaction with the target material, as well as the smaller energy transferred to the lattice atoms, resulting in a higher concentration of vacancies introduced by low-energy proton irradiation compared with high-energy protons. Meanwhile, the projected range becomes farther and farther, and the DPA slightly diminishes, indicating that the displacement damage is due to proton irradiation and is decreasing with the increase of proton energy.