Yonsei University · Medicine
Professor Jung Chul Kim's research lab specializes in regenerative medicine and tissue engineering with a focus on hair follicle biology, biomaterials, and advanced wound healing. The lab investigates the use of biodegradable nanofibers—particularly PHBV-based matrices—combined with hair follicular cells to enhance tissue regeneration and improve outcomes in hair transplantation and soft tissue reconstruction. Key research directions include the development of biological dressings for accelerated wound healing, the identification of stem cell reservoirs in the outer and dermal sheaths of hair follicles, and the clinical application of novel hair transplant techniques using precision instruments like the Choi hair transplant device. The lab bridges fundamental cell biology with translational medical applications, particularly in cosmetic and reconstructive surgery.
Figures are computed from collected data and may differ slightly.
A new procedure for single hair transplantation using the Choi hair transplanter is presented. This operation provides obvious cosmetic advantages in hairline refinement and the reconstruction of eyebrows, eyelashes, beards, and pubic escutcheon. The surgical technique is described in detail.
We tested the effects on the early-stage wound healing of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) nanofiber matrices cultured with hair follicular cells. PHBV only, PHBV/collagen, and PHBV/gelatin at a 7/3 weight ratio were produced by electrospinning, and their in vitro cell culture and in vivo wound healing as biological dressings were examined. In cell attachment and growth on matrices, dermal sheath (DS) cells attached to hydrophilic PHBV/collagen and PHBV/gelatin faster than hyd
The middle portion of the outer root sheath and dermal sheath may also contain epithelial, mesenchymal, and melanocyte reservoirs.
This paper proposes a vector control method for the synchronous reluctance motor (SynRM) which selects appropriate stator d,q-axis current component combination (flux current, torque current) so that the influence of iron core loss on the developed torque can be minimized in torque control. A coupled finite element analysis and Preisach's modeling for SynRM is presented to verify the propriety of the proposed method and a characteristics analysis is performed under the effects of saturation and
This paper proposes a novel pixel circuit and driving scheme that adopts low-temperature polycrystalline silicon and oxide thin-film transistors (LTPO TFTs) for mobile devices using active-matrix organic light-emitting diode (AMOLED) displays. The proposed pixel circuit and driving scheme provide uniform luminance and render flicker invisible at variable refresh rates (VRRs) from 1 to 120 Hz. Using the proposed pixel circuit with extended compensation time (tCOMP) improves the luminance uniformi
Amorphous silicon was crystallized by metal-induced crystallization through a cap with a Ni area density of 2×1014 atoms/cm2 on the cap. The crystallized polycrystalline silicon (poly-Si) shows hexagonal-shaped or disk-shaped grains with average grain size of ∼40 μm. The p-type channel thin-film transistor (TFT) on a single-grain poly-Si exhibited a field-effect mobility of 114 cm2/V s, a threshold voltage of −4.7 V and a subthreshold slope of 0.5 V/dec. The gate bias-stressed changes in the TFT
This study aimed to assess the expression of vasohibin-2 (VASH2) in pancreatic ductal adenocarcinoma (PDAC) as a marker of tumor aggressiveness and its impact on tumor angiogenesis, proliferation, and clinical outcome. We examined the expression of the VASH2 gene in human pancreatic cell lines PANC-1 and MiaPaCa-2 by quantitative reverse transcription polymerase chain reaction (qRT-PCR) and immunocytochemistry. Fifty samples from patients with PDAC were immunostained with VASH2, CD34, and Ki-67
재일 한국인을 포함한 한국문학 연구자들에게 있어서 악명 높은 친일 작가 장혁주는 오로지 ‘비겁한 변절자’로만 기억될 뿐이다. 그에 비해 김사량은 ‘암흑기를 뚫은 저항문학’의 상징으로 표상되어 왔다. 이 양 극단의 평가에서 우리는, 기억의 선별과 취사선택을 통해 자기 정체성을 형성하고자 하는 탈식민지 사회 한국인의 집단적 무의식을 발견할 수 있다. 장혁주와 김사량에게서 각각 무엇이 잊혀지고 무엇이 기억되었는가? 그 기억과 망각의 메카니즘의 기본 원리는 무엇인가? 그 결과, 혹은 그 과정에서 한국인의 ‘국민적 정체성’은 어떻게 형성되었는가? 이 논문은 이러한 문제의식을 바탕으로 탈식민지 한국 사회에서 민족주의 담론이 어떻게 작동되어 왔고/되고 있는지를 살피고자 한다. SUMMARY
이 논문은 최현배의 3대 저작 중의 하나로 일컬어지는 조선 민족 갱생의 도를 중심으로 한국 민족주의 담론이 지닌 모순과 분열을 분석한 것이다. 최현배를 중심으로 한 조선어학회의 한글운동은 해방 이후 식민지 저항 민족주의의 최정점으로 신화화되어 왔다. 그러나 조선 민족 갱생의 도를 비롯한 식민지 언어 내셔널리즘의 실천은 처음부터 제국에 의해 주어진 지적 범주의 한계를 벗어날 수 없는 것이었다. 식민지의 언어 내셔널리즘은 제국의 틀 안에서 ‘민족적인 것’을 특수한 영역으로 ‘분절(articulate)’하고 그렇게 분절된 영역 안에서 식민주의자, 또는 다른 민족주의자와의 헤게모니 쟁투를 벌이는 것으로 시종하였다. 그 과정에서 식민지 권력과 제휴, 협조하거나 동원되는 것은 식민지 언어 내셔널리즘의 일상적인 조건이었다. 해방 이후의 탈식민지 국가는 식민지 민족운동의 이와 같은 모순과 분열을 은폐하는 한편, 민족주의운동의 신화화를 통하여 자신의 정당성(legitimacy)의 근거를 찾았다. 조
Effect of Cr addition on damping capacity, mechanical property, and corrosion resistance of Fe-18%Mn martensitic alloy has been studied. Martensite start temperature (Ms) of the alloy decreases linearly from 150 to 25 with increasing Cr content up to 15%. The damping capacity decreases gradually from 27 to 23% in SDC with increasing Cr content from zero to 10%, and decreases rapidly with further Cr content. The tensile strength of the alloy maintains a level of 60 / regardless of Cr content with
Open papers in the app to read, cite, and organize with AI.