서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1994)

김재홍,안진균,정성재,김영태,김중환,김시영,이석종,이홍렬,서호석,김경훈,권혁진,정우권,고우석,이용석,안필수,오준규,오용섭 대한화학요법학회 1996 대한화학요법학회지 Vol.14 No.1

Background : In recent years gonorrhoea has been panendemic and remains one of the most common Sexually Transmitted Diseases in the world, especially in developing countries. Objective & Method : For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria Gonorrhoeae(PPNG), Ive have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results : In 1994, 168 strains of N. gonorrhoeae were isolated, among which 109 (64,9% ) were PPNG. Conclustion : Our results suggests that the prevalence of PPNG in Seoul is still increasing.

경골 근위부 자가 망상골을 이용한 치조열 골 이식술

김학균,김은석,문재필,정창우 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.2

Two cases of alveolar bone graft with autogenous cancellous bone from proximal tibial metaphysis was done. Satisfactory amount and quality of autogenous cancellous bone was obtained. Considering its overall lack of morbidity, the proximal tibial metaphysis is a useful donor site for small to moderate bone defect in oral & maxillofacial region.

ARQ 기법을 적용한 블루투스 복합 피코넷에서 임펄스 잡음의 영향

김도균,노재성,조성준,김정선 한국항행학회 2002 韓國航行學會論文誌 Vol.6 No.2

본 논문에서는 임펄스 잡음, 라이시안 페이딩, 그리고 동일채널간섭이 존재하는 블루투스 복합 피코넷에서 PER 성능과 패킷 처리율의 개선에 대하여 연구하였다. 특히, 블루투스 복합 피코넷에서 동일채널간섭의 영향을 시뮬레이션 하였다. 시뮬레이션 결과로부터 복합 피코넷에 의한 동일채널간섭과 임펄스 잡음은 블루투스 복합 피코넷의 성능에 영향을 주며 SAW-ARQ 기법은 블루투스 패킷의 전송 성능을 개선하는데 효율적임을 알 수 있었다. This paper has investigated the PER performance and the packet throughput of Bluetooth multipiconet in the presence of impulsive noise. Rician fading, and co-channel interference. Specially, it is simulated the effect of co-channel interference in Bluetooth multi-piconet. From the simulation results, it is obtained that the co-channel interference due to multi-piconet and impulsive noise affects performance of Bluetooth multi-piconet. And, we have known that the SAQ-ARQ method is very efficient to improve the performance of Bluetooth packet transmission

「작물별ㆍ재배유형별 표준시비량과 시비추천량」프로그램

정호근,조재규,최칠구,김사균 한국농업정보과학회 2000 농업정보과학 Vol.2 No.1

Generally farmers cultivate 2 or 3 crops in a year, In some cases more than 10 crops are culti-vated in a year by a farmer, These crop numbers and varieties also might be changed depending on the farmer's income based on the crop. Therefore, farmers have diHiculty in configurating the recommended for-tilizer rate for each crop. This study developed a series of user-friendly EXCEL Program to help farmers and extension specialists making decision on fertilizer rate for each crop. By using the program farmers can decide appropriate fertilizer rates based on the soil test results for each field and crop, which can improve fertilizer use efficiency. Also, this program might be useful to make a farm plan by reflerting fertilizer tost required for each field.

구매단가 및 운송비 할인을 고려한 최적 주문 정책

김재균,신성환 울산대학교 1991 공학연구논문집 Vol.22 No.2

본 논문은 구입량에 따라 구매 가격과 운송비용이 각각 할인되는 상황하에서 주문 정책을 수립할 때 총비용을 최소화시키는 적절한 주문량을 결정하는데 그 목적이 있다. 본 고에서는 구매 단가의 경우에는 단계할인이 적용되고 운송비용의 경우에는 운송단위별로 할인이 이루어지는 경우에 대한 모델이 제시되었으며 이와같은 할인 계획하에서 최적 주문량을 결정할 수 있는 절차가 제시되었다. This paper deals with an EOQ model in which both the unit purchasing price and the freight cost depend on the quantity of the lot size. The model adopts incremental quantity discounts for the price and a general form of discounts for the freight cost. Investigation of the properties of an optimal solution allows us to develop an algorithm whose validity is illustrated through an example problem.

조립식 대형판구조의 접합부강도와 내력특성간의 상관성

김재균,우종열,윤정배 慶尙大學校生産技術硏究所 1995 生産技術硏究所論文集 Vol.11 No.-

The 8 specimens are tested for vertical joint of PC large panel type. The comparison of the specimens having a different strength between grout concrete and panel is presented and other design parameters such as steel reinforcing ratio and location are varied. Test behaviors are discussed on crack patterns near shear-key, maximum shear and energy absorption capacities. If the relative strength of grout concrete is high, the results show more ductile and rely on the reinforcing loop bar than the case of same relative strength.

이차구순열 결손의 치료

임석균,박인순,여환호,지재휴,김영균,김수관 大韓顎顔面成形再建外科學會 1997 Maxillofacial Plastic Reconstructive Surgery Vol.19 No.2

Despite the current accomplishments with the repair of cleft lips, the surgical management of the nasal deformity remains a functional and aesthetic dilemma for patients, their families, and reconstructive surgeons. Recent improvements in the understanding and technical execution of te primary cleft lip repair have significantly reduced secondary sequelae and the consequent need for secondary surgical correction. But, secondary surgical corrections are necessary according to numerous factors. Such factors include the secondary surgical corrections are necessary according to numerous factors. Such factors include the severity of the initial deformity, the surgical plan, precision of execution of the primary repair, and success of the postoperative management. We preformed the secondary correction of cleft lip and palate in 11 patients via various methods. In conclusion, primary repair of cleft lip and palate patients is the most important to prevent the secondary deformities, and most of cleft lip and palate with secondary deformities must be treated with combined cheiloplasty and rhinoplasty.

가축분뇨 비료성분 부하수준을 고려한 지역별 적정사육두수 설정

김재환,박치호,한정대,박백균 한국농업정책학회, 한국축산경영학회 2001 농업경영정책연구 Vol.28 No.2

In relation to pollution load, 166 towns and cities set the following optimum number of livestock, according to cultivated area, the amount of fertilizer ingredient for crops and wastes. According to the analysis of the total capacity for waste based on cultivated area and fertilizer requirement, N was 279,884 M/T, P2O5 140,464 M/T and K2O 182.559 M/T. Total amount of nutrient production according to the number of livestock were 222,331 M/T N, 64,716 M/T P2O5 and 86,670 M/T K2O, which are 86.7%, 53.6% and 52.7% of the fertilizer requirment. It is estimated that 45 regions showed an overload capacity of fertilizer per hectare in N, 11 regions in P2O5 and 13 regions in K2O, The converted optimum number of livestock was 13,415,000 Livestock Unit (LU).

국산 Avana 인공치아와 외국산 ITI 인공치아의 악골조직내 적합성에 관한 비교연구

유재하,이지웅,백성흠,정원균,김종배 大韓顎顔面成形再建外科學會 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.6

The purpose of this article is to confirm the longterm biocompatibility of national Avana implant and international ITI implant in dogs. At the fourth month after extreaction of the mandibular third and fourth premolar in three dog, both implants were inserted using careful atraumatic technique and prosthetic abutments were applied onto the implants in three months. After that, the implants were examined by naked eye and radiographic image every three months during 1 year, for detection of the complications, such as, mobility, bone resorption and wound infection. At 1 year after application of prosthetic abutment, the dogs were sacrificed for the histopathologic analysis by light microscope. The results obtained were as follows; 1. All implants had the ralatively good prognosis without mobility, wound infection and moderate bone resoprtion, in clinical and radiological evaluation during one year. 2. The all histopathologic specimens at one year after application of prosthetic abutment onto the implants showed the distinct osseointegration between implant system and bone, with projection of new bone apposition onto the peri-implant tissue. But Avana implants had the less osseointegration than ITI implants in the cancellous and marrow layer of jaw bone. 3. The all histopathologic specimens at one year after application of prosthetic device showed the firm junction by dense connective tissue pattern between the implant and the gingival portion. But Avana implants had the less firmer junction than ITI implants. 4. The authors confirmed that Avana implant and ITI implant have more higher tissue biocompatibility in dental implantation, but ITI implant has the more osseointegration than the Avana implant.

에스트로겐 투여가 난소절제로 유도된 백서의 골다공증에 미치는 효과에 관한 실험적 연구

허균행,김경욱,이재훈 단국대학교 치의학연구소 1994 논문집 Vol.6 No.2

Osteoporosis is a state of reduced bone mass per unit volume with a normal ratio of mineral to matrix. There were many methods for osteoporosis, and estrogen is one of them. In this study, 30 female rats were ovariectomized to make a state of estrogen deficiency and induce osteoporosis. After 13 weeks, 15 ovariectomized rats were injected 6 times with 60㎍/㎏ of estradiol by 1 week interval (experimental group). The remaining 15 ovariectomized rats were used as control group. According to the time schedule, both of them were sacrified and femur were harvested. Paraffin sections were stained with HematoxylinEosin staining and modified Gomori's Trichrome staining, and observed under light microscope. The results were as follows : 1. There were no significant bony changes between the experimental and control group of cancellous bone. 2. The density of cortical bone showed increasing with time in experimental group. 3. The resorption of cortical bone in experimental group was less than that of control group.