A Comparative Study on the Effects of Three Types of Pillows on Head-neck Pressure Distribution and Cervical Spine Alignment

Moon Kyeong-Ah,Kim Ji-Hyun,Kim Ye Jin,Park Joo-Hee,Jeon Hye-Seon 한국전문물리치료학회 2024 한국전문물리치료학회지 Vol.31 No.1

Background: Sleep accounts for approximately one-third of a person’s lifetime. It is a relaxing activity that relieves mental and physical fatigue. Pillows of different sizes, shapes, and materials have been designed to improve sleep quality by achieving an optimal sleep posture. Objects: This study aimed to determine which pillow provides the most comfortable and supports the head and neck during sleep, which may enhance sleep quality. Methods: Twenty-eight healthy adults (19 males and 9 females) with an average age of 29 years participated in this cross-sectional study. This experiment was conducted while the participants laid down for 5 minutes in four different pillow conditions: (1) no pillow (NP), (2) neck support foam pillow (NSFP), (3) standard microfiber filled pillow (SFP), and (4) hybrid foam pillow (HFP). The head-neck peak pressure, cranio-vertebral angle in supine (CVAs), cranio-horizontal angle in supine (CHAs), chin-sternum distance (CSD), and muscle tone of sternocleidomastoid were analyzed using one-way repeated measures analysis of variance (ANOVA). The significance level was set at p < 0.05. Results: The head-neck peak pressure was the highest in the NSFP condition, followed by the NP, SFP, and HFP conditions. The CVAs, CHAs, and CSD of the SFP were lower than those of the other pillows. Muscle tone was the highest in the NP condition, followed by the of NSFP, HFP, and SFP conditions. The participants subjective comfort level in both the supine and side-lying postures was highest in the HFP condition, followed by the SFP and NSFP conditions. Conclusion: This study can be used to establish the importance of pillow selection for highquality sleep. The results of this study, suggest that a hybrid pillow with a good supportive core and appropriate fluffiness can maintain comfort and correct cervical spine alignment during sleep.

Forensic diagnosis of suspected dog and cat abuse in South Korea during 2019-2021

Kyung Hyun Lee(Kyung Hyun Lee),Namhee Moon(Namhee Moon),Ah-Young Kim(Ah-Young Kim),Mi-Kyeong Ko(Mi-Kyeong Ko),Bok-Kyung Ku(Bok-Kyung Ku) 한국예방수의학회 2022 한국예방수의학회 학술대회자료집 Vol.2022 No.-

Conditioned Medium from Dying Smooth Muscle Cell Induced Apoptotic Death

Moon Hyun Bu,Kyeong Ah Lee,Koan Hoi Kim,Byung Yong Rhim 대한생리학회-대한약리학회 2005 The Korean Journal of Physiology & Pharmacology Vol.9 No.6

In this study, the authors investigated whether death of vascular smooth muscle cell (VSMC) had a pathological pertinence. Conditioned media obtained from rat aorta smooth muscle cell (SMC) that were induced death by expressing FADD in the absence of tetracycline (FADD-SMC) triggered death of normal SMC. DNA fragmentation and caspase-3 activation were observed in dying SMC by conditioned media. FADD-SMC showed transcriptional activation of tumor necrosis factor (TNF)-α. Conditioned medium contained TNF-α, indicating secretion of the cytokine from dying FADD-SMC. It was investigated if secreted TNF-α was functional. Conditioned medium activated ERK and p38 MAPK pathways and induced MMP-9 expression, whereas depletion of the cytokine with its soluble receptor (sTNFR) remarkably inhibited induction of MMP-9 by conditioned medium. These findings suggest that TNF-α in conditioned medium seems to be active. Then, contribution of TNF-α on death-inducing activity of conditioned medium was examined. Depletion of TNF-α with soluble TNF-α receptor decreased the death activity of conditioned medium by 35%, suggesting that TNF-α play a partial role in the death activity. Boiling of medium almost completely abolished the death-inducing activity, suggesting that other heat labile death inducing proteins existed in conditioned medium. Taken together, these results indicate that SMC undergoing death could contribute to inflammation by expressing inflammatory cytokines and pathological complications by inducing death of neighboring cells.

노지감귤 단기 저장가능성에 대한 경제적 효과 검토

안경아(Kyeong Ah Ahn),문태완(Tae Wan Moon),김배성(Bae Sung Kim) 한국산학기술학회 2018 한국산학기술학회논문지 Vol.19 No.8

제주지역에서 대부분 생산되는 감귤류는 재배방식에 따라 노지에서 재배되는 온주감귤, 시설하우스에서 재배되는 온주감귤, 노지이지만 비가림 시설을 해서 재배되는 온주감귤 그리고 노지 온주감귤 보다 재배 시기가 늦고 품종도 다른 한라봉, 천혜향, 진지향 등 만감류로 구분된다. 만감류는 온주감귤 보다 맛 등 품질이 좋아 소비량이 꾸준히 증대되어 ’90년 이후 최근까지 재배면적과 생산량이 지속해서 늘어나고 있고, 비가림 감귤 재배도 정부의 정책적 지원과 더불어 당도개선등 품질향상 효과가 있어 지속해서 늘어나고 있다. 그러나 이에 반해 2010년 이후 노지 감귤의 재배면적은 지속해서 감소하고 있다. 이 연구는 감귤류 중 생산비중이 높지만 지속해서 재배면적이 줄고 있는 노지 감귤을 연구의 대상으로 삼고, 특히 수급 안정에 핵심적인 역할을 할 수 있을 것으로 파악되는 저장부문의 수급안정 기여 가능성을 탐색하는데 초점을 두고 있다. 노지감귤 중장기 수급모형 추정 및 전망을 위해 노지감귤 개별 품목에 대한 부분균형모형을 구축하고 품목별 모형내 개별방정식은 계량경제학 방법을 이용하여 추정하였다. 생산량 저장 시나리오 분석 결과, 재배면적은 2027년 기준 감귤 생산량을 5% 저장했을 때 14.49ha, 10%인 경우 14.97ha, 15%인 경우 15.50ha에 이를 것으로 분석된다. 이 연구는 현재 산지에서 저장에 초점을 두고 있지 않은 상황에서 저장가능성에 대한 종합적인 기술적 및 경제적인 검토를 하고 있다는 데 선행연구들과 차별성이 있다. Citrus fruits can be classified as field citrus, greenhouse citrus, citrus produced by rain proof cultivation and late-harvested citrus such as Hallabong, Chunhaehyang, and Jinjihyang according to cultivation method or variety in Jeju province of Korea. The consumption of late-harvested citrus has been increasing steadily since 1990 because the sugar content of the fruits is ordinary higher than field citrus. The cultivation land of citrus produced by rain proof cultivation has been also enlarged continuously aided by Korean government support program and quality increasing effect of this cultivation method. However, the cultivation land of field citrus has been decreasing since 2010. In spite of such a decrease of cultivation land, recently the price of field citrus rather declined according to increasing of yield per 10a. For the estimation and forecast of the long-term supply-demand model in the field citrus, we constructed a partial balance model for the individual field citrus and estimated individual equation in each item’s model by using the econometric method. As a result of the production storage scenario analysis, the cultivation area is expected to store 5%(14.49ha), 10%(14.97ha). 15%(15.50ha) of citrus production in 2027. This study reviews the structure of storage, and storability in Jeju field citrus and suggest several policy implications.

Conditioned Medium from Dying Smooth Muscle Cell Induced Apoptotic Death

Bu, Moon-Hyun,Lee, Kyeong-Ah,Kim, Koan-Hoi,Rhim, Byung-Yong The Korean Society of Pharmacology 2005 The Korean Journal of Physiology & Pharmacology Vol.9 No.6

In this study, the authors investigated whether death of vascular smooth muscle cell (VSMC) had a pathological pertinence. Conditioned media obtained from rat aorta smooth muscle cell (SMC) that were induced death by expressing FADD in the absence of tetracycline (FADD-SMC) triggered death of normal SMC. DNA fragmentation and caspase-3 activation were observed in dying SMC by conditioned media. FADD-SMC showed transcriptional activation of tumor necrosis factor $(TNF)-{\alpha}$. Conditioned medium contained $TNF-{\alpha}$, indicating secretion of the cytokine from dying FADD-SMC. It was investigated if secreted $TNF-{\alpha}$ was functional. Conditioned medium activated ERK and p38 MAPK pathways and induced MMP-9 expression, whereas depletion of the cytokine with its soluble receptor (sTNFR) remarkably inhibited induction of MMP-9 by conditioned medium. These findings suggest that $TNF-{\alpha}$ in conditioned medium seems to be active. Then, contribution of $TNF-{\alpha}$ on death-inducing activity of conditioned medium was examined. Depletion of $TNF-{\alpha}$ with soluble $TNF-{\alpha}$ receptor decreased the death activity of conditioned medium by 35%, suggesting that $TNF-{\alpha}$ play a partial role in the death activity. Boiling of medium almost completely abolished the death-inducing activity, suggesting that other heat labile death inducing proteins existed in conditioned medium. Taken together, these results indicate that SMC undergoing death could contribute to inflammation by expressing inflammatory cytokines and pathological complications by inducing death of neighboring cells.

2단 DC-DC 컨버터로 구성된 배터리 에너지저장용 계통연계형 전력변환장치

박아련(Ah-Ryeon Park),김도현(Do-Hyun Kim),김경태(Kyeong-Tae Kim),한병문(Byung-Moon Han),이준영(Jun-Young Lee) 대한전기학회 2012 전기학회논문지 Vol.61 No.12

This paper proposes a new grid-tied power conditioning system for battery energy storage, which is composed of a 2-stage DC-DC converter and a PWM inverter. The 2-stage DC-DC converter is composed of an LLC resonant converter connected in cascade with a 2-quadrant hybrid-switching chopper. The LLC resonant converter operates in constant duty ratio, while the 2-quadrant hybrid-switching chopper operates in variable duty ratio for voltage regulation. The operation of proposed system was verified through theoretical analysis and computer simulations. Based on computer simulations, a hardware prototype was built and tested to confirm the technical feasibility of proposed system. The proposed system could have relatively higher efficiency and smaller size than the existing system.

TOU 요금기반 DR과 경제성 DR 동시 참여 최적 ESS 스케줄링

황현경(Hyun-Kyeong Hwang),윤아윤(Ah-Yun Yoon),이진오(Jin-Oh Lee),장재원(Jae-Won Chang),문승일(Seung-Il Moon) 대한전기학회 2018 대한전기학회 학술대회 논문집 Vol.2018 No.-

UAV를 활용한 고해상도 지도 제작 및 농업지역 비점오염 영향 인자 조사

김경아(Gyeong-Ah Kim),박경훈(Kyung-Hun Park),문병현(Byung-Hyun Moon),배은택(Eun-Taek Bae),이승원(Seung-Won Lee),김성현(Seoung-Hyeon Kim),박건웅(Geon-Ung Pack),서경호(Kyeong-Ho Seo),송봉근(Bong-Geun Song) 대한공간정보학회 2018 한국지형공간정보학회 학술대회 Vol.2018 No.11

Surface Plasmon Resonance Aptamer Biosensor for Discriminating Pathogenic Bacteria Vibrio parahaemolyticus

Ahn, Ji-Young,Lee, Kyeong-Ah,Lee, Moon-Jong,Sekhon, Simranjeet Singh,Rhee, Sung-Keun,Cho, Sung-Jin,Ko, Jung Ho,Lee, Lyon,Han, Janet,Kim, Sang Yong American Scientific Publishers 2018 Journal of Nanoscience and Nanotechnology Vol.18 No.3

<P>In this paper, whole-bacteria SELEX (WB-SELEX) strategy was adopted to isolate specific aptamers against Vibrio parahaemolyticus. Round selection for V. parahaemolyticus was conducted 11 rounds, including two negative selection rounds. It was determined through real-time PCR amplification and post-SELEX experiment. The selected aptmers had high binding property and specificity to V. parahaemolyticus. Of 28 aptamers tested, VPCA-apta# 1 had the highest binding affinity compared to other aptamer candidates obtained. To detect V. parahaemolyticus, aptamer based SPR biosensor platform was constructed and pathogenic bacteria sensing was conducted in two steps. The first step was to construct 5'-biotinylated VPCA-apta# 1 binding probe. The second step was to incubate V. parahaemolyticus and test microbes in functionalized SA sensor chip in parallel. Our platform showed significant activity for detecting and discriminating V. parahaemolyticus from other enteric species such as Escherichia coli, Listeria monocytogenes, Sigella sonnei, and Vibrio fischeri. This is the first report on the use of whole-SELEX to isolate DNA aptamers specific for V. parahaemolyticus. We demonstrated the feasibility of using aptamer platform for the detection of V. parahaemolyticus in various food supplies. It might be used in multiple points of care for diagnosing Vibriosis.</P>

Exploring the Relation of Smartphone Addiction and Musculoskeletal Pain in the Neck, Trunk, and Upper Limbs: A Cross-sectional Study

Yixin Wang,Ye-Jin Kim,Kyeong-Ah Moon,Joo-Hee Park,Hye-Seon Jeon 한국전문물리치료학회 2023 한국전문물리치료학회지 Vol.30 No.3

Background: Smartphone addiction has emerged as a significant social problem. Numerous studies have indicated the association between smartphone use and discomfort in the muscu-loskeletal system of the upper extremities. Objects: This cross-sectional survey aimed to compare the characteristics of musculoskeletal pain in the neck, trunk, and upper limbs between individuals with smartphone addiction and those without addiction. Methods: We collected a total of 326 healthy individuals’ data from China and Korea who had owned and used smartphones for more than 5 years between 20–50s through an online questionnaire consisting of 84 questions in four major sections. The first part contained basic information on the participant's personal characteristics and smartphones. The second part contained questions about smartphone use and posture. The third part was the smartphone addiction. The fourth part was to investigate musculoskeletal pain in various upper body parts. Results: Smartphone addiction has a weak negative correlation with age (r = –0.20, p < 0.01) and a weak positive correlation with the hours of smartphone use (r = 0.376, p < 0.01). Frequent musculoskeletal pain symptoms related to smartphone use were observed in the neck, shoulder, lower back, and wrists. The hours of smartphone use was slightly positively associated with the prevalence of musculoskeletal pain in the shoulder (r = 0.162, p < 0.05) and lower back (r = 0.125, p < 0.05). The prevalence of musculoskeletal pain in the neck (χ2 = 3.993, p < 0.05), shoulder (χ2 = 6.465, p < 0.05), and wrist (χ2 = 4.645, p < 0.05) was significantly higher among females than males. Conclusion: The results suggest that smartphone addiction should be recognized as a dual concern encompassing both physical health and psychosocial aspects. Furthermore, health-care professionals, including physicians and physical therapists, should consider clients' smart-phone usage patterns when assessing and treating with musculoskeletal pain.