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Sun, Chang-Qing,Chang, Yu-Bo,Cui, Ling-Ling,Chen, Jia-Jun,Sun, Nan,Zhang, Wei-Jie,Jia, Xiao-Can,Tian, Yuan,Dai, Li-Ping Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.5
Gastric cancer is the second most common cause of cancer-related deaths in the world. Although certain dietary factors and lifestyles have been suggested to be associated with gastric carcinogenesis, there have been few investigations focusing on rural areas. A case-control study was therefore carried out to investigate the risk factors of gastric cardia cancer (GCC) in rural areas of Linzhou. A total of 470 newly diagnosed cases of GCC and 470 healthy controls were included. Face-to-face interviews were conducted, using a uniform questionnaire containing questions on demographics, per capita income, living habits, dietary habits and family history of tumors. The relationship between putative risk factors and GCC was assessed by odds ratios (OR) and their 95% confidence intervals (95%CI) derived from conditional logistic regression model by the COXREG command using SPSS 12.00. Multivariate logistic regression analysis was used to evaluate simultaneously the effects of multiple factors and other potential confounding factors. Multivariate logistic analysis showed that smoking (OR=1.939, 95%CI:1.097-3.426), alcohol drinking (OR=2.360, 95%CI: 1.292-4.311), hot food consumption (OR=2.034, 95%CI: 1.507-2.745), fast eating (OR=1.616, 95%CI: 1.171-2.230), mouldy food (OR=4.564, 95%CI: 2.682-7.767), leftover food (OR=1.881. 95%CI: 1.324-2.671), and family history of tumor (OR=2.831, 95%CI: 1.588-5.050) were risk factors for GCC. High per capita income (OR=0.709, 95%CI: 0.533-0.942), high education level (OR=0.354, 95%CI: 0.163-0.765), consumption of fresh fruits (OR=0.186, 95%CI: 0.111-0.311) and vegetables (OR=0.243, 95%CI: 0.142-0.415), and high BMI (OR=0.367, 95%CI: 0.242-0.557) were protective factors for GCC. Our data indicate that unhealthy lifestyle and dietary habits might be important contributors to GCC in this population.
Jie Li,Hai‑Yan Xu,Ai‑Guo Wang,Feng‑Jun Zhang,Dao‑Sheng Sun,Won‑Chun Oh 한국세라믹학회 2020 한국세라믹학회지 Vol.57 No.2
TiO2 thin films with controllable morphology and grain size were prepared via a liquid phase deposition (LPD) technique. The effects of the processing parameters including the ( NH4)2TiF6 concentration, solution pH, and ( NH4)2TiF6:H3BO3 molar ratio on the grain size and morphology of the films were investigated. The prepared samples were characterized by X-ray diffraction, scanning electron microscopy, and ultraviolet–visible spectroscopy. The results showed that the deposition parameters significantly affected the growth and nucleation velocities of the crystalline grains, which resulted in the formation of TiO2 films with different morphologies and grain sizes. The capillary stress among the grains of the film, which resulted in the cracking of the film, depended on the size of the grains. Thus, the cracking of the LPD-derived TiO2 films could be mitigated by adjusting the deposition parameters.
Jun Liu,Meng Sun,Meng-Jie Chang,Si-Meng Fan,Qian Hui,Fu-Rong Ni,Bin Yuan 한국섬유공학회 2021 Fibers and polymers Vol.22 No.2
Novel CoFe2O4/MIL-100(Fe) (CFO/MIL-100(Fe)) core/shell nanofibers were prepared by successive ionic layeradsorption and reaction (SILAR) assembly of MIL-100(Fe) on electrospun CoFe2O4 nanofibers. The MIL-100(Fe) shellswere constructed on the dispersed CoFe2O4 fiber surface with high uniformity, homogeneous thickness and high stability. Due to the inherent porosity of MIL-100(Fe), a higher specific surface area of 225.77 m2/g is achieved for the CFO/MIL-100(Fe)-10 sample. The formed CFO/MIL-100(Fe) catalysts exhibit high catalytic activity towards degradation of rhodamineB (RhB) under visible light irradiation. The photocatalytic activity remains above 77 % within 60 min illumination after fourcycles. Due to the simple synthetic method, highly uniform structure, strong magnetic recoverable, as well as goodphotocatalytic performance, the obtained CFO/MIL-100(Fe) core/shell nanofibers could be promising photocatalysts forpractical application.
Poster Display : Sudden death in feedlot cattle by enterotoxemia
( Sun Hee Do ),( Seong Jun Jang ),( Hai Jie Yang ),( Dong Wei Yuan ),( Il Hwa Hong ),( Jin Kyu Park ),( Moon Jung Goo ),( Hye Rim Lee ),( Young Sook Son ),( Eun Mi Cho ),( Jae Yong Chung ),( Won Il Je 한국수의병리학회 2006 한국수의병리학회 학술발표논문집 Vol.10 No.-
( Xiao Jie Cheng ),( Xu Ming Wang ),( Tian Lei Qiu ),( Mei Yuan ),( Jiang Uang Sun ),( Jun Lian Gao ) 한국미생물 · 생명공학회 2014 Journal of microbiology and biotechnology Vol.24 No.11
A novel esterase gene, est01, was successfully unearthed from a biogas digester microbiota metagenomic library. The 1,194 bp est01 gene encodes a protein of 44,804 Da (designated Est01). The amino acid sequence of Est01 shows only moderate (33%) identity to a lipase/ esterase. Phylogenetic analysis and biochemical characterization confirmed that Est01 is a new member of family VIII esterases. The purified Est01 from recombinant Escherichia coli BL21 (DE3) showed high hydrolytic activity against short-chain fatty acid esters, suggesting that it is a typical carboxylesterase rather than a lipase. Furthermore, the Est01 was even active at 10°C (43% activity remained), with the optimal temperature at 20°C, and had a broad pH range from 5.0 to 10.0, with the optimal pH of 8.0. These properties suggest that Est01 is a cold-adaptive esterase and could have good potential for low-temperature hydrolysis application.
Chae, Sun Young,Jang, Jun Ho,Im, Geun Ho,Jeong, Ji-Hyun,Jung, Won-Beom,Ko, Sukjin,Jie, Hyesoo,Kim, Ji Hye,Chang, Yun Sil,Chung, Seungsoo,Kim, Ki-Soo,Lee, Jung Hee Elsevier 2019 NeuroImage Vol.188 No.-
<P><B>Abstract</B></P> <P>Neuroplasticity is considered essential for recovery from brain injury in developing brains. Recent studies indicate that it is especially effective during early postnatal development and during the critical period. The current study used functional magnetic resonance imaging (fMRI) and local field potential (LFP) electrophysiological recordings in rats that experienced neonatal hypoxic-ischemic (HI) injury during the critical period to demonstrate that physical exercise (PE) can improve cortical plasticity even when performed during adulthood, after the critical period. We investigated to what extent the blood oxygen level-dependent (BOLD)-fMRI responses were increased in the contralesional spared cortex, and how these increases were related to the LFP electrophysiological measurements and the functional outcome. The balance of excitation and inhibition was assessed by measuring excitatory and inhibitory postsynaptic currents in stellate cells in the primary somatosensory (S1) cortex, which was compared with the BOLD-fMRI responses in the contralesional S1 cortex. The ratio of inhibitory postsynaptic current (IPSC) to excitatory postsynaptic current (EPSC) at the thalamocortical (TC) input to the spared S1 cortex was significantly increased by PE, which is consistent with the increased BOLD-fMRI responses and improved functional outcome. Our data clearly demonstrate in an experimental rat model of HI injury during the critical period that PE in adulthood enhances neuroplasticity and suggest that enhanced feed-forward inhibition at the TC input to the S1 cortex might underlie the PE-induced amelioration of the somatosensory deficits caused by the HI injury. In summary, the results of the current study indicate that PE, even if performed beyond the critical period or during adulthood, can be an effective therapy to treat neonatal brain injuries, providing a potential mechanism for the development of a potent rehabilitation strategy to alleviate HI-induced neurological impairments.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Physical exercise (PE) enhances cortical plasticity in hypoxic-ischemic (HI) injury. </LI> <LI> Cortical plasticity can be monitored by fMRI and electrophysiological recordings. </LI> <LI> Enhanced feed-forward inhibition improves the somatosensory deficits in HI injury. </LI> <LI> PE can be a therapeutic method for brain injuries in newborns and infants. </LI> </UL> </P>
Two species of the genus Herpetogramma (Lepidoptera: Crambidae: Spilomelinae) new to Korea
Bo-Sun Park,Mu-JIe Qi,Sol-Moon Na,Dong-Jun Lee,Jae-Won Kim,Yang-Seop Bae 한국응용곤충학회 2016 한국응용곤충학회 학술대회논문집 Vol.2016 No.10
Two species of the genus Herpetogramma Ledere are reported for the first time from Korea: Herpetogramma licarsisalis (Walker) and Herpetogramma stultalis (Walker). The larvae of H. stultalis are well known pest of Achyranthes aspera. Also H. licarsisalis important pest of turf and some other grass crops in Hawaii, Australasia, and Southeast Asia. The description, host plants, adult photographs, and pictures of male and female genitalia are provided.
Fang, Jie,Ding, Shichuan,Sun, Yining,Hang, Jun The Korean Institute of Power Electronics 2020 JOURNAL OF POWER ELECTRONICS Vol.20 No.6
A signal injection method without torque ripple is presented to estimate the stator winding temperature of a surface-mounted permanent magnet synchronous machine (PMSM), where the temperature is estimated based on the stator resistance. First, the current signal (Δi<sub>d<sup>*</sup></sub>) is injected into the current control loop to produce DC current offsets used to calculate the stator resistance, where the injected signal cannot lead to extra torque ripple. Then the temperature can be obtained based on the relationship between the stator winding temperature and the stator resistance. Finally, the proposed method is validated by simulation and experimental results. In addition, no extra equipment is needed for the proposed method.
Zhao, Jun-Qiang,Sun, Fang-Jie,Liu, Shan-Shan,Yang, Jun,Wu, Yu-Quan,Li, Gui-Shan,Chen, Qing-Yong,Wang, Jia-Xiang Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.2
Aim: Connexin 43 (Cx43) and E-cadherin are important biomarkers related with cancer. Their expression at protein and mRNA levels was here investigated in 50 primary lung carcinoma tissues and 20 samples of adjacent normal tissue of Chinese patients with non-small cell lung cancer (NSCLC). Methods: Protein and mRNA expression were evaluated by ABC immunohistochemistry and RT-PCR. Results: (1) The positive expression rates of Cx43 and E-cadherin protein were higher in the adjacent normal tissues than those in the primary lung carcinoma tissues; (2) the positive expression rates of Cx43 and E-cadherin protein decreased with NSCLC progression; (3) the expression of E-cadherin protein was not related with the pathological type of NSCLC; and (4) the relative quantity of the Cx43 or E-cadherin mRNA expression was correlated with the the histological type, clinical stage, cancer cell differentiation and the lymph node metastasis. Conclusion: The data suggested that the Cx43 and E-cadherin are reduced with NSCLC progression, and might be important biomarkers for judging the metastasis and prognosis.