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Plyometric Training과 비타민 C 투여가 남고생의 체력, 혈중 젖산, 암모니아 및 젖산탈수소효소에 미치는 영향
장준원,김세종,이현미,서혜림,조현숙,고정림,염종우,예정복,백영호 釜山大學校 附設 體育科學硏究所 2003 體育科學硏究所 論文集 Vol.19 No.-
The purpose of this was to examine the effect of plyometric training and vitamin C ingestion on physical fitness and fatigue substance....
김현수,이상한,장현중,백상흠,차두원 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.1
To investigate epidermiologic trend in maxillofacial fractures, We retrospectively studied 934 patients with maxillofacial fractures between 1981∼1987 and 1995∼1999. The results were compared in the previous group (Group A, patients treated between 1981∼1987) with those in the recent group (Group B, 1995∼1999). Also, we studied 516 patient between 1995∼1999 for occupation, associated injuries, treatment and complications. The sex ratio of men to women decreased (5.6 : 1 in Group A vs. 3.5 : 1 in Group B), and the largest age group was 20 to 29 years. There was the highest incidence in September and Fall. The most frequent cause of maxillofacial fracture in both Group A and B was traffic accidents. The distribution of fracture site did not change appreciably, but the frequency of midfacial fracture increased. In the recent group, the largest occupational group was salaried men, and the largest associated injuries of maxillofacial fracture was head and neck injury. Open reduction was used in 91% of the cases, and post-operation complications were infection, neurologic problem, malocclusion, and mouth opening limitation etc. Our results suggest that the clinical features of patients with maxillofacial fractures have changed during the past decade.
석탄회로 합성한 제올라이트에 대한 암모니아성 질소 흡착특성 조사
류완호,이원묵,백일현,배장순 한국화학공학회 2003 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.41 No.4
국내 석탄화력 발전소에서 폐기되는 석탄회를 이용하여 폐수 중 암모니아성 질소 제거용 흡착제를 제조하고자 NaOH를 반응물로 한 수열합성 반응을 이용, 제올라이트를 합성하였으며 제조된 제올라이트를 실제공정에 활용하기 위하여 흡착실험 및 공정모사를 수행하였다. 또한 흡착제를 구형으로 제조하여 암모니아성 질소의 등온 흡착 공정에 이용하였으며 이 결과 Langmuir식에 잘 일치함을 알 수 있었다. 고정층에서의 흡착 거동은 축 방향 분산흐름, 입자 내부에서의 표면 확산 및 Sips 흡착 등온식을 바탕으로 한 고정층 흡착모델의 주요 공정 변수에 대한 파과곡선을 잘 모사할 수 있음을 확인할 수 있었다. Zeolite was synthesized from coal fly ash produced by a domestic power plant and applied for the removal of ammonia from waste water. Zeolite was synthesized using a hydrothermal method involving an akaline reaction with NaOH, and adsorption experiments and simulations were conducted. Adsorption experiments with the pelletized spherical zeolite were carried out. The experimental data obtained from adsorption isotherms agreed well with the Langmuir equation. Also, most of the correlated results for the fixed bed model based on surface diffusion and Sips adsorption isotherms equation were consistent with the experimental data.
Baek Jang-Hyun,Kim Byung Moon,Suh Sang Hyun,Jeon Hong-Jun,Ihm Eun Hyun,Park Hyungjong,Kim Chang-Hyun,Cha Sang-Hoon,Choi Chi-Hoon,Yi Kyung Sik,Kim Jun-Hwee,Suh Sangil,Kim Byungjun,Chang Yoonkyung,Kim S 대한영상의학회 2023 Korean Journal of Radiology Vol.24 No.2
Objective: We aimed to evaluate the efficacy of EmboTrap II in terms of first-pass recanalization and to determine whether it could yield favorable outcomes. Materials and Methods: In this multicenter, prospective study, we consecutively enrolled patients who underwent mechanical thrombectomy using EmboTrap II as a front-line device. The primary outcome was the first pass effect (FPE) rate defined by modified Thrombolysis In Cerebral Infarction (mTICI) grade 2c or 3 by the first pass of EmboTrap II. In addition, modified FPE (mFPE; mTICI grade 2b–3 by the first pass of EmboTrap II), successful recanalization (final mTICI grade 2b–3), and clinical outcomes were assessed. We also analyzed the effect of FPE on a modified Rankin Scale (mRS) score of 0–2 at 3 months. Results: Two hundred-ten patients (mean age ± standard deviation, 73.3 ± 11.4 years; male, 55.7%) were included. Ninetynine patients (47.1%) had FPE, and mFPE was achieved in 150 (71.4%) patients. Successful recanalization was achieved in 191 (91.0%) patients. Among them, 164 (85.9%) patients underwent successful recanalization by exclusively using EmboTrap II. The time from groin puncture to FPE was 25.0 minutes (interquartile range, 17.0–35.0 minutes). Procedure-related complications were observed in seven (3.3%) patients. Symptomatic intracranial hemorrhage developed in 14 (6.7%) patients. One hundred twenty-three (58.9% of 209 completely followed) patients had an mRS score of 0–2. Sixteen (7.7% of 209) patients died during the follow-up period. Patients who had successful recanalization with FPE were four times more likely to have an mRS score of 0–2 than those who had successful recanalization without FPE (adjusted odds ratio, 4.13; 95% confidence interval, 1.59–10.8; p = 0.004). Conclusion: Mechanical thrombectomy using the front-line EmboTrap II is effective and safe. In particular, FPE rates were high. Achieving FPE was important for an mRS score of 0–2, even in patients with successful recanalization.
Inhibitory Effect of Fermented Tatary Buckwheat (Fagopyrum tataricum) on Adipocyte Differentiation
Hyun Jin Baek,Seon-A Jang,Chang Won Kim,Da Eun Lee,Dae Won Park,Se Min Jo,Hae Seong Song,Young Mi Cho,Yeji Lim,Jeong Yoon Lee,Hyun Mook Jung,Se Chan Kang 한국식품영양과학회 2016 한국식품영양과학회 학술대회발표집 Vol.2016 No.10
A Call Admission Control based on the Effective Bandwidth Concept in CDMA System
Baek, Jang Hyun,Ryu, Byung Han 전북대학교 공업기술연구소 1998 工學硏究 Vol.29 No.-
본 연구에서는 코드분할다중접속 (code division multiple access: CDMA) 시스템에서 등가대역개념을 이용한 호수락 제어 방법을 제시한다. 핸드오프호의 절단률을 낮추기 위해 무선자원의 일부를 핸드오프용으로 예약하고, 예약된 자원은 핸드오프호만이 이용하는 경우가 신규호가 예약된 자원의 일부분을 이용하는 경우를 고려함다. 가용자원의 부족으로 호요구에 실패한 호는 허용되는 일정시간 동안 버퍼에서 대기하도록 하고, 가용자원이 발생하였을 때는 핸드오프호 버퍼에서 대기중인 핸드오프호를 신규호보다 먼저 처리하게 함으로써 핸드오프호에 우선순위를 부여한다. 시뮬레이션을 통하여 핸드오프호를 위해 예약할 자원의 양에 대한 적정한 값을 도출하고, 자원예약 및 할당방법에 따른 신규호의 차단률 및 핸드오프호의 절단률과 수율을 평가한다.
Jang Hyun Baek,김병문 대한영상의학회 2015 Korean Journal of Radiology Vol.16 No.3
Symptomatic vertebral artery (VA) stenosis associated with bilateral carotid rete mirabile (CRM) has not been reported. We report the long-term clinical and angiographic outcome after stenting for symptomatic VA stenosis in the patient with bilateral CRM. This report is the first case that symptomatic VA stenosis associated with bilateral CRM was treated with stenting.
Jang, Hyun-Baek,Chung, Young-Joo The Acoustical Society of Korea 2009 韓國音響學會誌 Vol.28 No.e2
Heart sound segmentation into its components, S1, systole, S2 and diastole is the first step of analysis and the most important part in the automatic diagnosis of heart sounds. Conventionally, the Shannon energy envelope peak detection method has been popularly used due to its superior performance in locating S1 and S2. Recently, the HMM has been shown to be quite suitable in modeling the heart sound signal and its use in segmenting the heart sound signal has been suggested with some success. In this paper, we compared the two methods for heart sound segmentation using a common database. Experimental tests carried out on the 4 different types of heart sound signals showed that the segmentation accuracy relative to the manual segmentation was 97.4% in the HMM based method which was larger than 91.5% in the peak detection method.
Baek, Seung Hyun,Park, So Jung,Jeong, Jae In,Kim, Sung Hyun,Han, Jihoon,Kyung, Jae Won,Baik, Sang-Ha,Choi, Yuri,Choi, Bo Youn,Park, Jin Su,Bahn, Gahee,Shin, Ji Hyun,Jo, Doo Sin,Lee, Joo-Yong,Jang, Cho Society for Neuroscience 2017 The Journal of neuroscience Vol.37 No.20
<P>Excessive mitochondrial fission is a prominent early event and contributes to mitochondrial dysfunction, synaptic failure, and neuronal cell death in the progression of Alzheimer's disease (AD). However, it remains to be determined whether inhibition of excessive mitochondrial fission is beneficial in mammal models of AD. To determine whether dynamin-related protein 1 (Drp1), a key regulator of mitochondrial fragmentation, can be a disease-modifying therapeutic target for AD, we examined the effects of Drp1 inhibitor on mitochondrial and synaptic dysfunctions induced by oligomeric amyloid-beta(A beta) in neurons and neuropathology and cognitive functions in A beta precursor protein/presenilin 1 double-transgenic AD mice. Inhibition of Drp1 alleviates mitochondrial fragmentation, loss of mitochondrial membrane potential, reactive oxygen species production, ATP reduction, and synaptic depression in A beta-treated neurons. Furthermore, Drp1 inhibition significantly improves learning and memory and prevents mitochondrial fragmentation, lipid peroxidation, BACE1 expression, and A beta deposition in the brain in the AD model. These results provide evidence that Drp1 plays an important role in A beta-mediated and AD-related neuropathology and in cognitive decline in an AD animal model. Therefore, inhibiting excessive Drp1-mediated mitochondrial fission may be an efficient therapeutic avenue for AD.</P>