1.A Study on the Design of High-Frequency Jet Ventilator Using PLL system.
Yeungnam University Journal of Medicine 1989;6(2):63-70
This paper describes to design and to examine the mechanical characteristics of high frequency jet ventilator. The device consists of Phase lock loop (PLL) system, solenoid valve driving control part and Air regulating system. This study is carried out by changing several factors such as endotracheal tube (E.T. tube) diameter, injector cannula diameter, 1%, and frequency (breaths/min.) having direct effects on the gas exchange as well as parameters of the entrained gas by venturi effect, so as to measure the tidal volume and minute volume. This system characteristics were as follows: 1) Frequency: 6-594 bpm 2) Inspiration time: 1-99% 3) Variance of input air pressure: 1-30 PSI
Air Pressure
;
Catheters
;
Tidal Volume
;
Ventilators, Mechanical*
2.Prophylactic Endoscopic Variceal Ligation for Esophageal Varices with High - risk of Hemorrhage.
Korean Journal of Gastrointestinal Endoscopy 1996;16(4):561-567
Prophylactic treatment of varices is an appealing concept because 50% of patients who experience variceal bleeding will die within the first 6 weeks of the first bleeding. However, the majority of trials which have evaluated prophylactic therapy gave failed to demonstrate advantage, We tried prophylactic endoscopic variceal ligation(EVL) in 10 patients, to evaluate the safety and effect of prophylactic EVL for esophageal varices with high-risk of hemorrhage. The eradication rate was 100% without bleeding and mortality, the mean session for eradication of varices 1.9, the number of bands per person 16.9 and the number of bands per session 8.9. Although mild chest pain(5.3%) and chest discomfortness(31.6%) were observed, no serious complication related with EVL resulted from 19 EVL sessions. The patients were followed for a mean of 327.0 days(85-708), during which recurrent esophagea1 varices were found in a case at 260 days from last session, but no bleeding nor death was occured. No late complication of EVL was documented. In conclusion, prophylactic EVL is safe and may be effective for esophageal varices with high-risk of hemorrhage. But, the large controlled-trial should be required.
Esophageal and Gastric Varices*
;
Hemorrhage*
;
Humans
;
Ligation*
;
Mortality
;
Thorax
;
Varicose Veins
3.A Case of Eosinophilic Cystitis in Child.
Korean Journal of Urology 2000;41(8):1036-1039
No abstract available.
Child*
;
Cystitis*
;
Eosinophils*
;
Humans
4.An assessment on the human body composition of Korean adult males with magnetic resonance image(I).
Jae Koo LEE ; Chul Chung CHUNG ; Eue Soo ANN
Korean Journal of Physical Anthropology 1993;6(2):209-217
No abstract available.
Adult*
;
Human Body*
;
Humans*
;
Male*
5.Anal incontinence due to anal sphincter injury.
Je Been CHUNG ; Jae Jung LEE ; Chul Jae PARK
Journal of the Korean Surgical Society 1992;43(2):266-272
No abstract available.
Anal Canal*
6.Studies on the B Cell Proliferation and Differentiation Factors in Human B Cell System.
Kwang Ju LEE ; Young Hun CHUNG ; Jae Ho LEE
Journal of the Korean Pediatric Society 1994;37(10):1386-1396
We have studied the function of lymphokines on human tonsillar B cell prolifertion and differentiation. B cells were stimulated with Staphylococcus aureus Cowanl (SAC) or anti- bead. The followings showed the results of this study. 1) In B cell activation, SAC induced B cell DNA synthesis but anti-mubead did not. SAC could activate and proliferate B cells. Minimal number of B cells were required to proliferate effectively. 2) In B cell proliferation, SAC could proliferate B cell in the abscence of lymphokines. Exogenous IL-2 or IL-4 enhanced B cell proliferation. The roles of IL-2 were very important in B cell proliferation. The effect of IL-4 on the IL-2 induced B cell proliferation was inhibitory in SAC-B cells. IL-4 could enhance the proliferation of anti-mu bead activated B cells. 3) In B cell differentiation, IL-2 was a major factor to differentiate SAC activated B cells, but IL-4 did not. IL-6 had a synergistic effect on the differentiation. The results of this study showed that the different signal transduction mechanisms were involved in B cell proliferation and differentiation. The B cell resposes to lymphokine were different, and it is depend upon antigens or mitogens.
B-Lymphocytes
;
Cell Differentiation
;
Cell Proliferation*
;
DNA
;
Humans*
;
Interleukin-2
;
Interleukin-4
;
Interleukin-6
;
Lymphokines
;
Mitogens
;
Signal Transduction
;
Staphylococcus aureus
7.Cutaneous Ulceration after Injection of Interferon Alpha in a Melanoma Patient.
Jimyung SEO ; Young In LEE ; Jae Won LEE ; Kee Yang CHUNG
Korean Journal of Dermatology 2016;54(3):220-221
No abstract available.
Humans
;
Interferon-alpha*
;
Interferons*
;
Melanoma*
;
Ulcer*
8.A clinical study of colorectal cancer.
Jin Han BAE ; Bong Wha CHUNG ; Jae Jung LEE ; Kyung Suk CHUNG ; Chul Jae PARK
Journal of the Korean Society of Coloproctology 1993;9(1):39-48
No abstract available.
Colorectal Neoplasms*
9.The efficacy of computed tomography in pretreatment evaluation of invasive cervical carcinoma.
In sik LEE ; Jae Hyun CHUNG ; Jung Eun MOK
Korean Journal of Obstetrics and Gynecology 1993;36(7):1808-1814
No abstract available.
10.Peptic Ulcer in Infants and Children.
Bo Young LEE ; Jae Kyoun RHIN ; Ki Sup CHUNG
Journal of the Korean Pediatric Society 1989;32(10):1360-1368
No abstract available.
Child*
;
Humans
;
Infant*
;
Peptic Ulcer*