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Reduction of ipsilateral thalamic volume in temporal lobe epilepsy with hippocampal sclerosis
Park, Kang Min,Kim, Tae Hyung,Mun, Chi Woong,Shin, Kyong Jin,Ha, Sam Yeol,Park, JinSe,Lee, Byung In,Lee, Ho-Joon,Kim, Sung Eun CHURCHILL LIVINGSTONE 2018 Journal of Clinical Neuroscience Vol.55 No.-
<P><B>Abstract</B></P> <P>The thalamus plays an important role in the modulation of both focal and generalized seizures, but the mechanisms related to seizures may be different among epilepsy syndromes. The aim of this study is to investigate the thalamic atrophy in different epilepsy syndromes. We enrolled a total of 72 patients with epilepsy (22 patients with temporal lobe epilepsy with hippocampal sclerosis, 21 patients with extra-temporal lobe epilepsy, and 29 patients with juvenile myoclonic epilepsy). We analyzed structural volumes of the brain with FreeSurfer 5.1 software, and compared them among subgroups of epilepsy and normal control subjects. Moreover, we quantified correlations between the duration of epilepsy and the structural volumes with age and sex as covariates. The volumes of the ipsilateral hippocampus in temporal lobe epilepsy with hippocampal sclerosis were significantly smaller than those in extra-temporal lobe epilepsy and normal control subjects [analysis of variance (ANOVA), p < 0.001]. Although the volumes of the ipsilateral thalamus were not different from those of normal control subjects, the volumes of the ipsilateral thalamus were negatively correlated with duration of epilepsy in temporal lobe epilepsy with hippocampal sclerosis (r = −0.5, <I>p</I> = 0.02). However, the volumes of interest in extra-temporal lobe epilepsy and juvenile myoclonic epilepsy were not different from those in normal control subjects, and none of these structures were correlated with duration of epilepsy. These findings suggest that the role of the thalamus may be different in thalamo-limbic circuits among epilepsy syndromes.</P> <P><B>Highlights</B></P> <P> <UL> <LI> We investigate the thalamic atrophy in different epilepsy syndromes. </LI> <LI> There is a reduction of ipsilateral thalamic volume only in temporal lobe epilepsy with hippocampal sclerosis. </LI> <LI> The role of the thalamus is different in thalamo-limbic circuits among epilepsy syndromes. </LI> </UL> </P>
Study of Pallet Scale Modified Atmosphere Packaging Films for Reducing Water Condensation
( Jinse Kim ),( Jong Woo Park ),( Seokho Park ),( Dong Soo Choi ),( Seung Ryul Choi ),( Yong Hoon Kim ),( Soo Jang Lee ),( Chun Wan Park ),( Jung- Soo Lee ),( Byoung-kwan Cho ) 한국농업기계학회 2016 바이오시스템공학 Vol.41 No.2
Purpose: The aim of this study was to find an appropriate polymer film, which could reduce the water condensation for pallet-size modified atmosphere packaging (MAP). Methods: Five different types of films were selected from several commercialized films. Prior to the real food storage test, plastic boxes with wetted plastic balls were used to simulate the high humidity conditions of real food storage. The initial MAP condition was 5% oxygen and 95% nitrogen, and the O2 concentration, the relative humidity and water condensation inside the films were checked on a daily basis. The MAP test for tomatoes was conducted by using the most appropriate film from the five films examined in this study. Results: Every film except Mosspack® indicated a similar variation in the O2 concentration over the course of time. The relative humidity near the surfaces of all the films except nylon-6 approached saturation conditions over time. For three kinds of films, namely, low-density polyethylene (LDPE) film, anti-fogging oriented polypropylene (AFOPP) film, and Mosspack®, the inner surfaces of the films were fully covered with dew after a storage period of a day. Conversely, an area of 4.5% was covered with dew in the case of the poly lactic acid (PLA) film, and there was no dew inside the nylon-6 film. The pallet-size MAP test for tomatoes was conducted by using the nylon-6 film and there was no water condensation inside the nylon-6 film over three weeks of storage. Conclusions: During the pallet scale MAP, water condensation could cause severe fungal infection and wetting of the corrugated box. Hence, it was important to minimize water condensation. This study showed that the MAP films with high WVTR such as nylon-6 and PLA could reduce the water condensation inside the pallet scale MAP.
Jinse Park,Wooyoung Jang,Jinyoung Youn,Eungseok Oh,Suyeon Park,Yoonsang Oh,Hee-Tae Kim,Soohyun Lim 대한신경과학회 2024 Journal of Clinical Neurology Vol.20 No.5
Background and Purpose The wearing-off (WO) phenomenon is the most common motor complication in advanced Parkinson’s disease (PD), but its identification remains challenging. The 9- and 19-item Wearing-off Questionnaires (WOQ-9 and WOQ-19) are self-assessment tools for motor and nonmotor symptoms that are widely used for WO screening. We produced Korean versions of the WOQ-19 and WOQ-9 (K-WOQ-19 and K-WOQ-9) and investigated their validity and reliability. Methods We used the translation–back translation method to produce K-WOQ-19 and K-WOQ-9, which were self-administered by 124 patients with PD. We conducted in-depth 10-minute interviews for confirming the presence of the WO phenomenon, and then stratified the participants into groups with and without WO. Diagnostic accuracy was assessed by analyzing receiver operating characteristic curves. Concurrent validity was assessed using the Movement Disorder Society–Unified Parkinson’s Disease Rating Scale (MDS-UPDRS) and the Hoehn and Yahr stage with Spearman’s rank correlation analysis. Reliability was assessed based on test–retest Cohen’s kappa (κ) values and intraclass correlation coefficients (ICCs). Results The optimal cutoff scores on the K-WOQ-19 and K-WOQ-9 for WO screening were 4 and 2, respectively. The test–retest ICCs of K-WOQ-19 and K-WOQ-9 were 0.943 and 0.938, respectively. Nineteen of the combined 20 items in K-WOQ-19 and K-WOQ-9 showed moderate-to-substantial agreement (κ=0.412–0.771, p<0.001). The scores on the translated scales were significantly correlated with MDS-UPDRS IV scores. Conclusions K-WOQ-19 and K-WOQ-9 are reliable and valid tools for detecting WO, with optimal cutoff scores of 4 and 2, respectively.
Study of Radio Frequency Thawing for Cylindrical Pork Sirloin
( Jinse Kim ),( Jong Woo Park ),( Seokho Park ),( Dong Soo Choi ),( Seung Ryul Choi ),( Yong Hoon Kim ),( Soo Jang Lee ),( Chun Wan Park ),( Gui Jeung Han ),( Byoung-kwan Cho ) 한국농업기계학회 2016 바이오시스템공학 Vol.41 No.2
Purpose: Radio frequency (RF) heating is a promising thawing method, but it frequently causes undesirable problems such as non-uniform heating. This can occur because of the food shape, component distribution, and initial temperature differences between food parts. In this study, RF heating was applied to the thawing of cylindrically shaped pork sirloin by changing the shape of electrodes and the surrounding temperature. Methods: Curved electrodes were utilized to increase the thawing uniformity of cylindrically shaped frozen meat. Pork sirloin in the shape of a half-circle column was frozen in a deep freezer at -70℃ and then thawed by RF heating with flat and curved electrodes. In order to prevent fast defrosting of the food surface by heat transfer from air to the food, the temperature of the thawing chamber was varied by -5, -10, and -20℃. The temperature values of the frozen pork sirloin during RF thawing were measured using fiber-optic thermo sensors. Results: After multiple applications of curved electrodes resembling the food shape, and a cooled chamber at -20℃ the half-cylindrically shaped meat was thawed without surface burning, and the temperature values of each point were similarly increased. However, with the parallel electrode, the frozen meat was partially burned by RF heating and the temperature values of center were overheated. The uniform heating rate and heat transfer prevention from air to the food were crucial factors for RF thawing. In this study, these crucial factors were accomplished by using a curved electrode and lowering the chamber temperature. Conclusions: The curved shape of the electrode and the equipotential surface calculated from the modeling of the parallel capacitor showed the effect of uniform heating of cylindrically shaped frozen food. Moreover, the low chamber temperature was effective on the prevention of the surface burning during RF thawing
Agricultural Process and Food Engineering ; Effects of Electromagnetic Heating on Quick Freezing
( Jinse Kim ),( Jongwoo Park ),( Seokho Park ),( Dongsoo Choi ),( Seungryul Choi ),( Yonghoon Kim ),( Soojang Lee ),( Seonmi Yoo ),( Guijeung Han ) 한국농업기계학회 2015 바이오시스템공학 Vol.40 No.3
Purpose: Quick freezing is widely used in commercial food storage. Well-known freezing techniques such as individual quick freezing require a low-temperature coolant and small cuts for the heat-transfer efficiency. However, the freezing method for bulk food resembles techniques used in the 1970s. In this study, electromagnetic (EM) heating was applied to improve the quick freezing of bulk food. Methods: During freezing, the surface of food can be rapidly cooled by an outside coolant, but the inner parts of the food cool slowly owing to the latent heat from the phase change. EM waves can directly heat the inner parts of food to prevent it from freezing until the outer parts finish their phase change and are cooled rapidly. The center temperature of garlic cloves was probed with optical thermo sensors while liquid nitrogen (LN) was sprayed. Results: When EM heating was applied, the center cooling time of the garlic cloves from freezing until -10°C was 48 s, which was approximately half the value of 85 s obtained without EM heating. For the white radish cubes, the center cooling time was also improved, from 288 to 132 s. The samples frozen by LN spray with EM heating had a closer hardness to the unfrozen samples than the samples frozen by LN only. Conclusions: The EM heating during quick freezing functions to maintain the hardness of fresh food by reducing the freezing time from 0 to -10°C.
Park, Jinse,Deshmukh, P.R.,Sohn, Youngku,Shin, Weon Gyu Elsevier 2019 JOURNAL OF ALLOYS AND COMPOUNDS Vol.787 No.-
<P><B>Abstract</B></P> <P>The present work reports the development of Au-nanoparticle decorated ZnO-TiO<SUB>2</SUB> core-shell nanowires on the Si-wafer. The developed Au-nanoparticle decorated ZnO-TiO<SUB>2</SUB> core-shell nanowires exhibit a unique structure with uniform sensitization of Au-nanoparticles with the diameter in the range of 5–9 nm on the ZnO-TiO<SUB>2</SUB> core-shell heterostructure. This unique structure of Au-nanoparticle decorated ZnO-TiO<SUB>2</SUB> core-shell nanowires demonstrates an enhanced photocurrent density of 1.63 mAcm<SUP>−2</SUP> upon illumination by visible light unveiling high photoelectrochemical water splitting activity. This photocurrent density is higher than the pristine ZnO nanowires (0.51 mAcm<SUP>−2</SUP>) and ZnO-TiO<SUB>2</SUB> core-shell nanowires (1.23 mAcm<SUP>−2</SUP>). Furthermore, photoelectrochemical water splitting efficiency of Au-nanoparticle decorated ZnO-TiO<SUB>2</SUB> core-shell nanowires was found to be 0.70%, which is higher than the ZnO nanowires (0.22%) and ZnO-TiO<SUB>2</SUB> core-shell nanowires (0.53%) at the same applied potential of +0.8 V<SUB>RHE</SUB>. The improved photocurrent density and efficiency is due to the enhanced absorbance in the visible region owing to the surface plasmon resonance effect of Au-nanoparticle, effective withdrawal of hot electron from the Au-nanoparticle at the interface of metal/semiconductor due to Schottky barrier as well as excellent charge-separation and transportation originating from the core-shell nanowires.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Development of Au decorated ZnO-TiO<SUB>2</SUB> core-shell NWs by CVD and photo-deposition. </LI> <LI> Au decorated ZnO-TiO<SUB>2</SUB> core-shell NWs shows the photocurrent density of 1.63 mAcm<SUP>−2</SUP>. </LI> <LI> Au decorated ZnO-TiO<SUB>2</SUB> core-shell NWs shows the fast photoresponse. </LI> <LI> Au decorated ZnO-TiO<SUB>2</SUB> core-shell NWs shows photoconversion efficiency of 0.70%. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>