Urchin-like alkaline nickel–cobalt carbonate derived Ni3S4/Co3S4 nanoparticles anchored on rGO for lithium/sodium-ion batteries with enhanced capacity

Bo-Han Zhang,Yu-Qian Wang,Fen Gao,Hua-Ying Wang,Wan-Xin Wen,Yun-Lei Hou,Jing-Zhou Chen,Dong-Lin Zhao 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.128 No.-

Transition metal sulfides (TMS) have emerged as promising anode materials for lithium and sodium ionbatteries due to their high theoretical capacity and low cost. However, the severe volume expansion duringthe conversion reaction causes rapid collapse inevitability when used as anode material. Herein, wepertinently fabricated nanoscale Ni3S4/Co3S4 with uniform particle size homogeneously dispersedbetween pleated graphene (Ni3S4/Co3S4@rGO) through facile hydrothermal assisted by cationic surfactants. The construction of 3D nanocomposites significantly shortens ion migration distances and enricheselectronic pathways, accelerating charge transfer kinetics while maintaining good stability. Uniformlydistributed bimetallic sulfides and rGO limit each other’s aggregation, allowing the excellent structuralproperties of the material to be maintained over time. Thus, the Ni3S4-Co3S4@rGO electrodes deliver ahigh reversible capacity of 972.5 mAh/g upon 200 cycles at 100 mA g1 in Lithium-ion battery and487.5 mAh/g upon 150 cycles at 100 mA g1 in Sodium-ion battery, as well as excellent rate capacityin both. These excellent properties show the potential for expansion of this simple synthetic methodin the field of alkali metal batteries.

Geographic Distribution and Epidemiology of Lung Cancer During 2011 in Zhejiang Province of China

Lin, Xia-Lu,Chen, Yan,Gong, Wei-Wei,Wu, Zhao-Fan,Zou, Bao-Bo,Zhao, Jin-Shun,Gu, Hua,Jiang, Jian-Min Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.13

Background: To explore etiology for providing scientific clues for the prevention of lung cancer. Materials and Methods: Data for lung cancer incidence and meteorological geographic factors from 25 counties in Zhejiang province of China during 2011 were studied. Stepwise multiple regression and correlation analysis were performed to analyze the geographic distribution and epidemiology of lung cancer. Results: 8,291 new cases (5,998 in males and 2,293 females) of lung cancer during 2011 in Zhejiang province were reported in the 25 studied counties. Reported and standardized incidence rates for lung cancer were 58.0 and 47.0 per 100,000 population, respectively. The incidence of lung cancer increased with age. Geographic distribution analysis shows that the standardized incidence rates of lung cancer in northeastern Zhejiang province were higher than in the southwestern part, such as in Nanhu, Fuyang, Wuxing and Yuyao counties, where the rates were more than 50 per 100,000 population. In the southwestern Zhejiang province, for instance, in Yueqing, Xianju and Jiande counties, the standardized incidence rates of lung cancer were lower than 37 per 100,000 population. Spearman correlation tests showed that forest coverage rate, air quality index (AQI), and annual precipitation level are associated with the incidence of lung cancer. Conclusions: Lung cancer in Zhejiang province shows obvious regional differences. High incidence appears associated with low forest coverage rate, poor air quality and low annual precipitation. Therefore, increasing the forest coverage rate and controlling air pollution may play an important role in lung cancer prevention.

Effects of Tissue Factor, PAR-2 and MMP-9 Expression on Human Breast Cancer Cell Line MCF-7 Invasion

Lin, Zeng-Mao,Zhao, Jian-Xin,Duan, Xue-Ning,Zhang, Lan-Bo,Ye, Jing-Ming,Xu, Ling,Liu, Yin-Hua Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.2

Objective: This study aimed to explore the expression of tissue factor (TF), protease activated receptor-2 (PAR-2), and matrix metalloproteinase-9 (MMP-9) in the MCF-7 breast cancer cell line and influence on invasiveness. Methods: Stable MCF-7 cells transfected with TF cDNA and with TF ShRNA were established. TF, PAR-2, and MMP-9 protein expression was analyzed using indirect immunofluorescence and invasiveness was evaluated using a cell invasion test. Effects of an exogenous PAR-2 agonist were also examined. Results: TF protein expression significantly differed between the TF cDNA and TF ShRNA groups. MMP-9 protein expression was significantly correlated with TF protein expression, but PAR-2 protein expression was unaffected. The PAR-2 agonist significantly enhanced MMP-9 expression and slightly increased TF and PAR-2 expression in the TF ShRNA group, but did not significantly affect protein expression in MCF-7 cells transfected with TF cDNA. TF and MMP-9 expression was positively correlated with the invasiveness of tumor cells. Conclusion: TF, PAR-2, and MMP-9 affect invasiveness of MCF-7 cells. TF may increase MMP-9 expression by activating PAR-2.

Heterologous Expression of a Gibberellin 2-Oxidase Gene from Arabidopsis thaliana Enhanced the Photosynthesis Capacity in Brassica napus L.

Bo Zhou,Dan Peng,Jianzhong Lin,Xingqun Huang,Wusheng Peng,Reqing He,Ming Guo,Dongying Tang,Xiaoying Zhao,Xuanming Liu 한국식물학회 2011 Journal of Plant Biology Vol.54 No.1

Gibberellins (GAs) are endogenous hormones that play an important role in regulating plant stature by increasing cell division and promoting seed germination. The GA2-oxidase gene from Arabidopsis thaliana (AtGA2ox8) was introduced into Brassica napus L. by Agrobacterium-mediated floral-dip transformation with the aim of decreasing the amount of bioactive GA and hence reduced the plant height. As anticipated, the transgenic plant exhibited dwarf phenotype. Importantly, compared with the wild type, the transgenic plants had delayed the seed germination, increased the chlorophyll content (28.7–36.3%) and photosynthesis capacity (14.3–18.7%) in a single leaf. At the same time, the photosynthesis capacity of the whole plants was significantly enhanced (35.7–48.6%) due to the extra leaves and branches.

Tellurium-enhanced nonresonant third-order optical nonlinearity in a germanosilicate optical fiber.

Lin, Aoxiang,Liu, Xueming,Watekar, Pramod R,Zhao, Wei,Peng, Bo,Lu, Min,Wei, Wei,Sun, Chuandong,Wang, Yishan,Han, Won-Taek,Toulouse, Jean Optical Society of America 2009 Applied Optics Vol.48 No.26

<P>A tellurium-doped germanosilicate optical fiber was developed by modified chemical vapor deposition and solution doping techniques. Using the continuous-wave self-phase modulation method, the nonresonant nonlinear refractive index, n2, was measured to be 5.52 x 10(-20) m2/W, which is 2 to 3 times that of the undoped germanosilicate glass fiber. Polyhedron structures TeO3 and TeO4 with GeO4 and SiO4 are believed responsible for lower phonon energy, more nonbridging oxygens, and a larger hyperpolarization, leading to the observed higher nonresonant optical nonlinearity.</P>

Identification and Molecular Analysis of Ixodid Ticks (Acari: Ixodidae) Infesting Domestic Animals and Tick-Borne Pathogens at the Tarim Basin of Southern Xinjiang, China

Li Zhao,Jizhou Lv,Fei Li,Kairui Li,Bo He,Luyao Zhang,Xueqing Han,Huiyu Wang,Nicholas Johnson,Xiangmei Lin,Shaoqiang Wu,Yonghong Liu 대한기생충학ㆍ열대의학회 2020 The Korean Journal of Parasitology Vol.58 No.1

Livestock husbandry is vital to economy of the Tarim Basin, Xinjiang Autonomous Region, China. However, there have been few surveys of the distribution of ixodid ticks (Acari: Ixodidae) and tick-borne pathogens affecting domestic animals at these locations. In this study, 3,916 adult ixodid ticks infesting domestic animals were collected from 23 sampling sites during 2012-2016. Ticks were identified to species based on morphology, and the identification was confirmed based on mitochondrial 16S and 12S rRNA sequences. Ten tick species belonging to 4 genera were identified, including Rhipicephalus turanicus, Hyalomma anatolicum, Rh. bursa, H. asiaticum asiaticum, and Rh. sanguineus. DNA sequences of Rickettsia spp. (spotted fever group) and Anaplasma spp. were detected in these ticks. Phylogenetic analyses revealed possible existence of undescribed Babesia spp. and Borrelia spp. This study illustrates potential threat to domestic animals and humans from tick-borne pathogens.

Simulation analysis and evaluation of decontamination effect of different abrasive jet process parameters on radioactively contaminated metal

Zhong Lin,Deng Jian,Zuo Zhe-wen,Huang Can-yu,Chen Bo,Lei Lin,Lei Ze-yong,Lei Jie-heng,Zhao Mu,Hua Yun-fei 한국원자력학회 2023 Nuclear Engineering and Technology Vol.55 No.11

A new method of numerical simulating prediction and decontamination effect evaluation for abrasive jet decontamination to radioactively contaminated metal is proposed. Based on the Computational Fluid Dynamics and Discrete Element Model (CFD-DEM) coupled simulation model, the motion patterns and distribution of abrasives can be predicted, and the decontamination effect can be evaluated by image processing and recognition technology. The impact of three key parameters (impact distance, inlet pressure, abrasive mass flow rate) on the decontamination effect is revealed. Moreover, here are experiments of reliability verification to decontamination effect and numerical simulation methods that has been conducted. The results show that: 60Co and other homogeneous solid solution radioactive pollutants can be removed by abrasive jet, and the average removal rate of Co exceeds 80%. It is reliable for the proposed numerical simulation and evaluation method because of the well goodness of fit between predicted value and actual values: The predicted values and actual values of the abrasive distribution diameter are Ф57 and Ф55; the total coverage rate is 26.42% and 23.50%; the average impact velocity is 81.73 m/s and 78.00 m/s. Further analysis shows that the impact distance has a significant impact on the distribution of abrasive particles on the target surface, the coverage rate of the core area increases at first, and then decreases with the increase of the impact distance of the nozzle, which reach a maximum of 14.44% at 300 mm. It is recommended to set the impact distance around 300 mm, because at this time the core area coverage of the abrasive is the largest and the impact velocity is stable at the highest speed of 81.94 m/s. The impact of the nozzle inlet pressure on the decontamination effect mainly affects the impact kinetic energy of the abrasive and has little impact on the distribution. The greater the inlet pressure, the greater the impact kinetic energy, and the stronger the decontamination ability of the abrasive. But in return, the energy consumption is higher, too. For the decontamination of radioactively contaminated metals, it is recommended to set the inlet pressure of the nozzle at around 0.6 MPa. Because most of the Co elements can be removed under this pressure. Increasing the mass and flow of abrasives appropriately can enhance the decontamination effectiveness. The total mass of abrasives per unit decontamination area is suggested to be 50 g because the core area coverage rate of the abrasive is relatively large under this condition; and the nozzle wear extent is acceptable

Research on the Predictive Optimal PID Plus Second Order Derivative Method for AGC of Power System with High Penetration of Photovoltaic and Wind Power

Xilin Zhao,Zhenyu Lin,Bo Fu,Li He,Chaoshun Li 대한전기학회 2019 Journal of Electrical Engineering & Technology Vol.14 No.3

Because of the uncertainty of the external environment, high penetration of renewable energy such as wind power and solar energy in the modern power system renders the traditional automatic generation control (AGC) methods more challenging. An improved AGC method named predictive optimal proportional integral diff erential plus second order derivative (POPID + DD) for multi-area interconnected grid is proposed in this paper to reduce the negative impacts of the uncertainty which is caused by the high penetration of renewable energy. Firstly, the mathematical model of the AGC system of multiarea power grid with penetration of photovoltaic (PV) and wind power is built. Then, PO-PID + DD controller is presented to improve the system robustness with respect to system uncertainties. In order to obtain the predictive sequence of the integral system output, the characteristic of the controller is included in the system model. Thus, according to the predictive sequence and designed objective function, the input of the controller can be readjusted to obtain the optimal eff ect of AGC. An IEEE 39-bus system is introduced as an example to testify the feasibility and eff ectiveness of the proposed method. The simulation results indicate that the system controlled by the proposed controller has desired dynamic performances.

식스시그마에 대한 매니저들의 인식

이보배(Bo Bae Lee),서원석(Won Seok Seo),Jin Lin Zhao 한국호텔외식관광경영학회 2012 호텔경영학연구 Vol.21 No.1

The purpose of this study was to examine managers` perception regarding the importance and application of Six Sigma principles in the U.S. hotel industry. A total of 22 Six Sigma elements were abstracted from previous quality improvement programs and Six Sigma research, and participants were asked to respond to level of importance and applications on each Six Sigma element`s. The most important Six Sigma element was management commitment, followed by teamwork, communication, customer satisfaction, and creativity. Whereas, the highest application attribute was customer satisfaction, followed by productivity, bottom line, cost reduction, and management commitment. In contrast, the lowest application attribute was rewards and recognition, which mean value was still above the neutral scale of four. As major findings, significant differences between perceived importance and application of Six Sigma elements were found by managers` employment position level and years worked. The practical implication of this study is that Six Sigma not only is very much applicable in the hotel industry, but also contributes to the process of reaching the goal of exceeding customer`s satisfaction. Therefore, Six Sigma is a management philosophy that could be implemented in the hotel industry that intends to increase productivity and customer`s satisfaction.

Expression of Hepatitis B virus S Gene in Pichia pastoris and Application of the Product for Detection of Anti-HBs Antibody

Hu Bo,Min Jian Liang,Guo Qiang Hong,Zhao Xia Li,Zhen Yu Zhu,Lin Li 한국생활환경학회 2005 BMB Reports Vol.38 No.6