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Gwangju, South Korea

Chonnam National University is a South Korean university located in the metropolitan city of Gwangju which lies in the middle of South Jeolla or Jeonnam province, for which the school is named in the Southwest of the country. The university was formally established in January, 1952 through the union of Gwangju Medical College, Gwangju Agricultural College, Mokpo Commerce College, and Daeseong College. It currently consists of 59 academic departments in 19 colleges and 11 graduate programs. University attached facilities are the University Library, Museum, Health Service Center, Agro-Bioindustry Technical Support Center, Animal Hospital, Language Education Center, School of Lifelong Education, and University Computing Center. In March 2006, Yeosu National University merged with Chonnam National University to become a satellite campus.Chonnam National University used to be generally regarded as one of the five major national universities of South Korea together with Seoul National University, Pusan National University, Kyungpook National University, and Chungnam National University. Now the number of the key national universities has been expanded into ten. CNU is also recognized as one of the best performers in government supported HRD projects. Research expenses of CNU ranks 13th nationally. Moreover, the number of High-ranking public officials ranked 11th. In addition, 26 alumni passed the Second Round of the 51st national bar exam, which is the biggest since the CNU Law School was established. Wikipedia.

Aravindan V.,Nanyang Technological University | Gnanaraj J.,Yardney Technical Products, Inc. | Lee Y.-S.,Chonnam National University | Madhavi S.,Nanyang Technological University
Chemical Reviews | Year: 2014

Apart from the mentioned applications, wind power generation, uninterruptible power sources, voltage sag compensation, photovoltaic power generation, CT and MRI scanners, and energy recovery systems in industrial machineries are worth mentioning. Carbonaceous materials are favored as EDLC components due to their high specific surface area, relatively low cost, chemical stability in solutions irrespective of the pH value, ease of synthesis protocols with tailored pore size distribution and its amphoteric nature that allows rich electrochemical properties from donor to acceptor state, and a wide range of operating temperatures. The combination reactions enable one to achieve higher energy density and specific capacitance than the EDLC counterpart. Conducting polymers and transition metal oxides are the perfect examples for pseudocapacitive materials. Source

Noh H.-R.,Chonnam National University
Optics Express | Year: 2012

We present a theoretical study of lineshape in polarization spectroscopy for the 6S1/2-6P3/2-7S1/2 transition line in cesium atoms. A circularly polarized pump beam is tuned either to the lower or the upper transition line, while a linearly polarized probe beam is tuned to the other transition line. The polarization rotation of the probe beam is accurately calculated using a semi-classical density-matrix formalism taking into account all relaxation processes. © 2012 Optical Society of America. Source

Expression of Livin, a member of the inhibitors of apoptosis protein family, is associated with tumor development and progression. The aims of this study were to evaluate whether Livin affects oncogenic biological behavior of colorectal cancer cells, and to document the relationship between its expression and various clinicopathological parameters in colorectal cancer. We investigated the impact of Livin on tumor cell behavior by using the small interfering RNA and pcDNA3.1 vector in SW480 and DKO1 colorectal cancer cell lines. The expression of Livin was investigated by RT-PCR and immunohistochemistry in coloretcal cancer tissues. The apoptotic cells were visualized by TUNEL assay, and proliferative cells were visualized by Ki-67 antibody staining. Knockdown of Livin suppressed tumor cell migration and invasion in colorectal cancer cells. Knockdown of Livin induced the apoptosis by up-regulating of caspase-3, -7 and PARP activities and the cell cycle arrest by decreasing cyclin D1, cyclin D3, cyclin-dependent kinase 4 and 6, and by inducing p27 expression. The MAPK signaling cascades were significantly blocked by knockdown of Livin. In contrast, overexpression of Livin enhanced tumor cell migration and invasion, and inhibited the apoptosis and cell cycle arrest. The mean apoptotic index (AI) value of Livin positive tumors was significantly lower than AI of Livin negative tumors. However, there was no significant difference between Livin expression and Ki-67 labeling index (KI). Livin expression was significantly increased in colorectal cancer and metastatic lymph node tissues compared to normal colorectal mucosa and non-metastatic lymph node tissues and was associated with tumor stage, lymphovascular invasion, lymph node metastasis and poor survival. These results indicate that Livin is associated with tumor progression by increasing tumor cell motility and inhibiting apoptosis in colorectal cancer. Source

Park S.C.,Chonnam National University
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2011

Recently the CMS Collaboration at the LHC reported "the first direct limit on black hole production at a particle accelerator" using a data sample corresponding to an integrated luminosity of 35 pb-1 of pp collision at a center of mass energy of 7 TeV (Khachatryan et al., 2011) [1]. Even though the result has a strong impact on future searches, the interpretation lacks enough theoretical support. In this Letter, we show that the parameter range which was considered by the CMS Collaboration is actually out of the validity range of semi-classical black hole picture so that the Monte Carlo simulation result which was crucially used in the analysis still needs further solid scientific basis. © 2011 Elsevier B.V. Source

The optimal dose of remifentanil to attenuate the cardiovascular responses to tracheal intubation in pre-eclamptic patients undergoing Caesarean delivery under general anaesthesia has not been established. We compared the effects of two low doses of remifentanil on the cardiovascular responses to tracheal intubation and neonatal outcomes. Forty-eight women with severe pre-eclampsia were randomly assigned to receive either remifentanil 0.5 μg kg1 (R0.5 group, n=24) or 1 μg kg1 (R1.0 group, n=24) over 30 s before induction of anaesthesia using thiopental 5 mg kg1 and succinylcholine 1.5 mg kg1. Systolic arterial pressure (SAP), heart rate (HR), and plasma catecholamine concentrations were measured. Neonatal effects were assessed using Apgar scores and umbilical cord blood gas analysis. SAP was decreased by induction of anaesthesia and increased by tracheal intubation in both groups. The peak SAP after intubation was greater in the R0.5 group than in the R1.0 group, whereas it did not exceed baseline values in either group. HR increased significantly above baseline in both groups with no significant differences between the groups. Three subjects in the R1.0 group received ephedrine due to hypotension (SAP < 90 mm Hg). Norepinephrine concentrations remained unaltered after intubation and increased significantly at delivery with no significant differences between the groups. Neonatal Apgar scores and umbilical arterial and venous pH and blood gas values were comparable between the groups. Both doses of remifentanil effectively attenuated haemodynamic responses to tracheal intubation with transient neonatal respiratory depression in pre-eclamptic patients undergoing Caesarean delivery under general anaesthesia. The 1.0 μg kg1 dose was associated with hypotension in three of 24 subjects. Source

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