Research of Circuit Working Construction Elevator with Single-guide Rail and Multi-cages

Kun Zhang,Kaiqiang Wang,Di Li,Qing Sun,Zhen Ye,Wei Liu Council on Tall Building and Urban Habitat Korea 2022 International journal of high-rise buildings Vol.11 No.2

As one of the most important vertical transportation equipment in super high-rise buildings, the construction elevator directly affects the project period, cost, and effectiveness. The paper proposes a new construction elevator with single-guide rail and multi-cages. It can solve the problems of single construction elevator capacity shortage and efficacy decrease with height reduction, the occupancy of plan and elevation position of multiple construction elevators, and extension of total construction period by cycling operation of multi-cages on a single-guide rail. The paper focuses on the design and research of the main components of the equipment, such as the rotating guide rail mechanism, vertical bearing mast tie system, segmented electrical power supply system, group control scheduling system, and safety anti-collision system.

Low Microsomal Epoxide Hydrolase Expression is Associated with Bladder Carcinogenesis and Recurrence

Zhang, Zhe,Yu, Xiu-Yue,Zhang, Guo-Jun,Guo, Kun-Feng,Kong, Chui-Ze Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.2

Microsomal epoxide hydrolase (mEH) plays a significant role in the metabolism of numerous xenobiotics and is associated with several forms of cancer. Here, we investigated the role of mEH expression in bladder carcinogenesis, subsequent progression and recurrence. The expression of mEH was analyzed by Western blot in 50 bladder urothelial carcinoma and 20 normal epithelial tissues. There was a significantly higher mEH expression in the normal epithelium (P<0.05) and mEH expression was lower in high stage than in low stage tumors (P<0.05). Further, immunohistochmistry in 106 bladder urothelial carcinoma demonstrated mEH expression to be negatively correlated with histological grade, pT stage and recurrence (P<0.05). These findings suggest the important role of mEH in bladder carcinogenesis, cancer development and recurrence, providing support for efforts to develop mEH-based gene therapy.

A New Method of Point-Clouds Accurate Measurement and Reconstruction

Kun Zhang,Weihong Bi,Xinghu Fu 보안공학연구지원센터 2014 International Journal of Database Theory and Appli Vol.7 No.6

With the reverse engineering development, the accuracy of system is more important in reconstruction, especially in non-contacting measurement. This paper provides a new method measuring the accuracy the point clouds, define a image probability and the point probability according to uncertainty data. The quantity of the uncertain point data is important to measuring the result of reconstruction. The prior data can be catch from the last measurement process, especially the edge data or characteristic points. Referring to prior data, basing on the Bayesian theory the more accuracy posterior data can be computed in this paper. We divided the point cloud into different areas, and organized the data with hierarchical tree-structure. According to the probability of one tree node, we adjust the area corresponding to the node. At last, by using the existing experimental equipment, we verify the measurement of point cloud accuracy algorithm. The depth data was obtained by a laser scanner---SICK LMS100. The depth data can be computed as point data with uncertainty. The result of the reconstruction deeply relies on the quality of prior data.

Design and Application of Self-Lifting & Slewing Multi-Cranes Platform

Kun Zhang,Kaiqiang Wang,Bo Chen,Qing Sun,Hui Yang,Xin Ba,Jinming Zhao Council on Tall Building and Urban Habitat Korea 2022 International journal of high-rise buildings Vol.11 No.2

Tower crane is of great importance in the construction of high rise buildings. A self-lifting & slewing multi-cranes platform (referred to as crane slewing platform) was developed to optimize the configuration of tower cranes, as well as solve the problems of cooperative operation conflict between multiple cranes and other construction equipment and their respective climbing and occupying of construction period. The design and test of the slewing platform was introduced. By applying the slewing platform in the construction of Chengdu Greenland Center super high rise building project, some key technologies such as the configuration of cranes, the installation, construction and lifting of the slewing platform are implemented and validated. Up to now, the slewing platform has been safely lifted up 98 times in Chengdu Greenland Center project construction, and achieved good social and economic benefits.

Study of a hybrid modular exhaust turbocharging system and its application on an 8-cylinder marine diesel engine

Kun Zhang,Xinyu Huang,Sai He,Kangyao Deng,Yi Cui,Aiqiang Luo 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.6

For turbocharging engines, the structure of the exhaust system directly affects the flow and energy transfer process of the exhaust gas, which has a big influence on the turbocharger performance. To evaluate the performance of various kinds of exhaust systems, two indicators, “available energy loss coefficient” and “pressure wave interference coefficient”, are proposed to evaluate the steady flow loss and transient flow anti-interference characteristics. Two kinds of exhaust system modular, Modular pulse converter (MPC) and Modular multi-purpose pulse converter (MMPC), are analyzed and compared by the three-dimensional calculation. The results show that the MMPC structure has a smaller available energy loss and a better anti-interference performance in the exhaust process. To solve the problems of scavenging interferences and exhaust temperature discrepancy on a highly boosted 8-cylinder marine diesel engine, a Hybrid modular exhaust (HME) system is proposed. Effects of MMPC, HME and MIXPC (Mixed pulse converter) on the engine performance are compared by one-dimensional simulation. This is followed by an engine test for performance comparison between MMPC and HME, which shows that the HME system can effectively relieve the problems of scavenging interference, and the maximum exhaust temperature discrepancy of all cylinders is reduced from 60°C to 31°C under the rated condition.

Studies on the Small Body Size Mouse Developed by Mutagen N-Ethyl-N-nitrosourea

Zhang, Qian-Kun,Cho, Kyu-Hyuk,Cho, Jae-Woo,Cha, Dal-Sun,Park, Han-Jin,Yoon, Seok-Joo,Zhang, ShouFa,Song, Chang-Woo Korean Society of ToxicologyKorea Environmental Mu 2008 Toxicological Research Vol. No.

Mutant mouse which show dwarfism has been developed by N-ethyl-N-nitrosourea (ENU) mutagenesis using BALB/c mice. The mutant mouse was inherited as autosomal recessive trait and named Small Body Size (SBS) mouse. The phenotype of SBS mouse was not apparent at birth, but it was possible to distinguish mutant phenotype from normal mice 1 week after birth. In this study, we examined body weight changes and bone mineral density (BMD), and we also carried out genetic linkage analysis to map the causative gene(s) of SBS mouse. Body weight changes were observed from birth to 14 weeks of age in both affected (n = 30) and normal mice (n = 24). BMD was examined in each five SBS and normal mice between 3 and 6 weeks of age, respectively. For the linkage analysis, we produced backcross progeny [(SBS${\times}$C57BL/6J) $F_1{\times}$ SBS] $N_2$ mice (n = 142), and seventy-four microsatellite markers were used for primary linkage analysis. Body weight of affected mice was consistently lower than that of the normal mice, and was 43.7% less than that of normal mice at 3 weeks of age (P < 0.001). As compared with normal mice at 3 and 6 weeks of age, BMD of the SBS mice was significantly low. The results showed 15.5% and 14.1 % lower in total body BMD, 15.3% and 8.7% lower in forearm BMD, and 29.7% and 20.1% lower in femur BMD, respectively. The causative gene was mapped on chromosome 10. The map order and the distance between markers were D10Mit248 - 2.1 cM - D10Mit51 - 4.2 cM - sbs - 0.7 cM - D10Mit283 - 1.4cM - D10Mit106 - 11.2cM - D10Mit170.

Strategies for Improving the Electronic Information Industry Security based on IOII

Kun Zhang,Zhenji Zhang 보안공학연구지원센터 2016 International Journal of Security and Its Applicat Vol.10 No.7

An Overview on the Integration of Informatization and Industrialization (IOII)

Kun Zhang,Zhenji Zhang 보안공학연구지원센터 2016 International Journal of Hybrid Information Techno Vol.9 No.9

The integration of informatization and industrialization (IOII) is a policy guidelines proposed by the Chinese Government to promote the production upgrade and the transformation of economic development mode, which is given increasingly attention by academic circles. In this paper, a brief introduction to IOII is presented. The research collections of IOII required to study the concept, development and process are surveyed as well as the application evaluation. By summarizing the development, relationship and the existing concept of IOII, a new concept of IOII is put forward. Then by studying comparatively the process and the application evaluation of IOII, suggestions for future empirical investigation is offered.

Fabrication of Two-Dimensional PEDOT:PSS Nanosheets Through In Situ Formed Complexes

Kun Zhang,Shiren Wang 성균관대학교(자연과학캠퍼스) 성균나노과학기술원 2015 NANO Vol.10 No.1

This paper presents a simple and e®ective method to fabricate water-soluble two-dimensional (2D) conductive poly(3,4-ethylenedioxythiophene):poly (sodium 4-styrenesulfonate) (PEDOT: PSS) nanosheets. Linear PSS is water-soluble and exhibits a quasi 1D structure in the dilute solution. Addition of 3,4-ethylenedioxythiophene (EDOT) monomers into acidic solutions would form 2D molecular complexes due to charge attraction. In situ polymerization of the ethylenedioxythiophene monomers produces 2D poly EDOT nanosheets. Both transmission electron microscopy and atomic force microscopy characterizations have confirmed the 2D polymeric nanosheets. Further Fourier transform infrared (FTIR) characterization also validated that the 2D nanosheet is composed of EDOT-based units and Raman spectroscopy indicated the strong interactions between ethylenedioxythiophene units in the 2D nanostructures. The electrical conductivity is measured to as high as 551.58 S/m for the thin film of as-produced 2D PEDOT: PSS nanosheets.

Killing Effects of Different Physical Factors on Extracorporeal HepG2 Human Hepatoma Cells

Zhang, Kun-Song,Zhou, Qi,Wang, Ya-Feng,Liang, Li-Jian Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.3

Objective: To determine the killing effects on extracorporeal HepG2 cells under different temperatures, pressures of permeability and lengths of treatment time. Method: According to different temperatures, pressures of permeability and lengths of treating time, extracorporeal HepG2 cells of human hepatoma cell-line were grouped to 80 groups. Cell index (CI) as the measurement of killing effect were calculated by monotetrazolium (MTT) methods, i.e., CI =1- (the OD value in treated group - the OD value in blank control group) / (mean of untreated control group - mean of blank control group). According to the factorial design, data were fed into SPSS 10.0 and analyzed by three-way ANOVA (analysis of variance). Result: Temperature, pressure of permeability and length of treating time all had effects on the CI (cell index) level. Length of treating time was the most influential factor of the three. Additionally, any two of them all had statistically significant interactive effects on the CI level. When treated for 5-30 min, destilled water at $46^{\circ}C$ stably generated the highest CI. Conclusion: The "$46^{\circ}C$-destilled water-60 min" was considered as the optimal combination of conditions which lead to highest CI. We suggest exerting celiac lavage for 15 min with stilled water at $40^{\circ}C-43^{\circ}C$ in surgical practice as a hyperthermia treatment to achieve ideal killing effects on free cancer cells, which is feasible, practical, and clinically effective.