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김재헌,노은운 한국임학회 1984 한국산림과학회지 Vol.65 No.1
잣나무의 雄花를 5月 18日~25日에 採取하여 四分子期에서 未成熟花粉에 이르는 段階의 葯을 培養한 結果 callus를 誘導하였다. G.D 基本培地에 BAP 0.1ppm 및 NAA 0.1~1ppm을 組合으로 處理한 培地에서 callus發生이 좋았으며, ½濃度의 M.S培地(Sucrose 2%, Agar 0.8%)에 BAP 0.1ppm과 NAA 0.5ppm을 加한 경우에도 좋았다. callus의 chromosome數는 12인 haploid도 있었으나 대부분 24로서 diploid였다. 生長이 旺盛한 callus는 體細胞에서 起因된 것으로 생각되어 앞으로 chromosome의 變異 等을 더욱 調査하여 ploidy의 특성을 究明할 수 있으리라고 생각된다.
Ectopic Prostate Tissue at the Bladder Dome Presenting as a Bladder Tumor
김재헌,진윤미,송윤섭 대한남성과학회 2013 The World Journal of Men's Health Vol.31 No.2
The presence of ectopic prostate tissue in the bladder is common, but the involvement of the bladder dome has rarely been reported. This case report describes a 72-year-old man who presented with gross painless hematuria. Cystoscopy revealed a smooth sessile mass at the dome region of the bladder. A complete transurethral resection of the mass was performed. Histopathological examination of the mass revealed the presence of benign ectopic prostatic tissue.
Current status of penile rehabilitation after radical prostatectomy
김재헌,이승욱 대한비뇨의학회 2015 Investigative and Clinical Urology Vol.56 No.2
Although disease-free survival remains the primary goal of prostate cancer treatment, erectile dysfunction (ED) remains a commoncomplication that affects the quality of life. Even though several preventive and therapeutic strategies are available for ED afterradical prostatectomy (RP), no specific recommendations have been made on the optimal rehabilitation or treatment strategy. Severaltreatment options are available, including phosphodiesterase-5 inhibitors, vacuum erection devices, intracavernosal or intraurethralprostaglandin injections, and penile prostheses. Urologists must consider more effective ways to establish optimal treatmentsfor ED after RP. ED is an important issue among patients with prostate cancer, and many patients hope for early ED recoveryafter surgery. This review highlights the currently available treatment options for ED after RP and discusses the limitations of each.
김재헌,박재영 대한남성과학회 2011 The World Journal of Men's Health Vol.29 No.3
External genitalia trauma including penis and scrotum often accompanies with genitourinary trauma or occurs independently, especially in male. External genitalia trauma is an emergent and serious condition like urinary system trauma but it has been unnoticed in urologic field. The treatment of external genitalia trauma is diverse according to the nature of trauma and injured anatomic site. The classification of trauma is important because it impacts the method of treatment however there has been no universe description about the classification of external genitalia trauma. The aim of this article is to summarize the methods of repairing defect in the penis and scrotum and the clinical application to the reparative treatment according to classification by its nature of injury.
InGaN-based Resonant-cavity Light-emitting Diodes with Dielectric-distributed Bragg Reflectors
김재헌,박시현 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.63 No.10
An InGaN-based resonant-cavity light-emitting diode (RC-LED) chip with a large chip area of 1 × 1 mm2 was fabricated using ZrO<sub>2</sub>/SiO<sub>2</sub> dielectric-distributed Bragg reflectors (DBRs) on both sides of the cavity. After the growth of InGaN-based n- and p-epitaxial layers on a sapphire substrate, ZrO<sub>2</sub>/SiO<sub>2</sub> layers for one DBR were deposited on it; then, holes with 10-μm diameters were patterned through the DBR layers. The DBR layer’s side of the whole sample was thermally bonded to a silicon substrate by using Au bonding metal; then, the sapphire substrate of the sample was removed using a laser lift-off technique. ZrO<sub>2</sub>/SiO<sub>2</sub> layers for the other DBR were deposited on n-GaN for complete formation of the cavity. Through the electrical and the optical characterizations, we showed that our RC-LED has the improved optical output power and forward directionality in comparison with a conventional LED.
김재헌,Seung Whan Doo,양원재,Yun Seob Song 대한비뇨의학회 2013 Investigative and Clinical Urology Vol.54 No.4
Purpose: We analyzed whether any problems existed in terms of the homogeneity of the Korean International Prostate Symptom Score (IPSS) questionnaire used in real practice. Materials and Methods: Between July 2012 and August 2012, 48 Korean IPSS questionnaires used in real practice were collected. All the items on the questionnaire, including the quality of life (QoL) questions, were compared and we then determined the homogeneity of each question in comparison with the originally validated Korean version of the IPSS from 1996. Results: Only 5 of 48 sources (10.4%) of the Korean IPSS totally corresponded with the original Korean version of the IPSS questionnaire. The consistency rate with the originally validated version was generally low for the answer choice items for each question,ranging from 16.6% for “less than half the time” to 35.4% for “almost always,” with the exception of the item “not at all” (100.0%). The consistency rate was 60.4% for question 3 (intermittency) and 18.8% for question 6 (straining). No homogeneity was found in any of the QoL-related questions. The average consistency rate with the originally validated version was 42.2% and ranged from 22.9% for “unhappy” to the highest rate of 95.8% for “mostly satisfied.”Conclusions: Compared with the originally validated Korean version of the IPSS, various Korean IPSS questionnaires used in real practice had significant problems in terms of homogeneity for both the questions and the answer choice items. Efforts are needed to ensure the uniform use of the validated Korean version of the IPSS questionnaire.