돼지 흉막폐렴(胸膜肺炎)의 발생(發生)

이현범,이근우,박후열,권오덕,Lee, Hyun-beom,Lee, Keun-woo,Park, Hoo-yeol,Kwon, Oh-deog 대한수의학회 1984 大韓獸醫學會誌 Vol.24 No.1

Authors observed an outbreak of porcine pleuropneumonia at a piggery in Gyeongbug, Korea, which were diagnosed on the ground of clinical and pathological findings with the following results. 1. One hundred and forty weanlings out of 200 ones died suddenly without noticiable signs during the period of 15 days. All of the dead pigs showed formy, blood-tinged discharge from the nose and mouth. 2. Main clinical findings observed from 60 alive pigs from group consisted of fever, cyanosis severe degree of dyspnea and pleuritic friction rub. 3. On hematological observation for typical 5 cases leukocytes showed marked degenerative left shift with leukopenia (10500-13070/cmm), neutropenia (7-13%) and increase in the number of band neutrophils (6-27%). 4. The most prominent and constant pathological changes observed at necropsy for dead or alive pigs consisted of fibrinous pleurisy with partial adhesion, overlying of the pulmonary surface with fibrinous menbrane and necrotic pneumonic lesions with marked edema and congestion of lung parenchyma. 5. From these results the outbreak was considered to be typical porcine pleuropneumonia, although no bacteriological isolation was attempted.

한국산 사료의 카드뮴 함량에 관한 조사연구

이현범,이근우 경북대학교 1990 새마을 硏究論叢 Vol.11 No.-

Present study was undertaken in order to evaluate the cadmium content of various feedstuffs produced in Korea. Sixty-two samples were collected from 6 regions. All of the samples were washed, dry-ashed and analyzed for cadmium content using atomic absorption spectrophotometer. The results obtained were summrized as follows: 1) The cadmium content in ㎍/g of pasture plants were measured with the following mean values. clover:7.10㎍/g, sagebrush:1.88㎍/g, Koreangrass:1.23㎍g/g. 2) The cadmium content in ㎍/g of agriculture-byproducts were measured with the following mean values. maizestalk:3.04ug/g, soybeanpod:0.83㎍/g, rice straw:0.68㎍/g, but rice hull not detected. 3) Twenty-eight samples(45%) out of 62 samples detected cadmium and regional mean values were Kangwondo:2.85㎍/g, Kyungsangdo:3.01㎍/g, Chungchyugdo:1.72㎍/g, Kyungkido:0.62㎍/g, Chonrado:2.24㎍/g, Jejudo:0.51㎍/g.

기하학적 제어 기법을 이용한 쿼드로터의 강건 경로 제어

이현범,김현진 한국항공우주학회 2012 한국항공우주학회 학술발표회 논문집 Vol.2012 No.11

이 논문에서는 기하학적 제어 기법을 이용한 쿼드로터의 강건 경로제어기를 소개한다. underactuated 시스템의 제어를 위해 고안된 기하학적 제어 기법은 오일러 각에 기반을 둔 제어기에서 나타나는 특이점 현상을 방지하여 복잡한 기동이 가능하게 한다. 본 논문에서는 이러한 기하학적 제어 기법을 바탕으로 적분기의 anti-windup의 추가를 통해 모델의 불확실성이 존재할 때에 대한 추종 성능을 높여주는 자세 제어기를 제안한다. 시뮬레이션을 통해 시스템 모델의 불확실성을 가지는 쿼드로터의 경로추정 결과를 확인한다. In this paper, we present a robust controller using geometric control for trajectory tracking of a quadrotor UAV. Geometric control enables complex maneuvers of underactuated systems such as quadrotors, by preventing singularities which appear in Euler-angle approaches. The proposed controller based on geometric control techniques improves tracking performance against model uncerainty using anti-windup integrator techniques. Tracking simulation results show satisfactory performance when the quadrotor model has uncertainties in motor dynamics and inertia.

복수 쿼드로터 무인기를 이용한 협업 감시 및 경계선 추종

이현범(Hyeon Beom Lee),문성원(Sung Won Moon),김우진(Woo Jin Kim),김현진(Hyoun Jin Kim) 제어로봇시스템학회 2013 제어·로봇·시스템학회 논문지 Vol.19 No.5

This paper investigates a boundary tracking problem using multiple quadrotor UAVs to detect and track the boundary of physical events. We set the boundary estimation problem as a classification problem of the region in which the physical events occur, and employ SVL (Support Vector Learning). We also demonstrate a velocity vector field which is globally attractive to a desired closed path with circulation at the desired speed and a virtual phase for stabilizing the collective configuration of the multiple quadrotors. Experimental results with multiple quadrotors show that this study provides good performance of the collective boundary tracking.

OFDM 수신기에서 Sampling Frequency Offset에 대한 연구

이현범(Hyun-Beom Lee),이병무(Byoung-Moo Lee),유흥렬(Heung-Ryeol You) 한국통신학회 2008 한국통신학회 학술대회논문집 Vol.2008 No.7

한국산(韓國産) 사료(飼料)의 연함량(鉛含量)에 관한 조사연구(調査硏究)

이현범,Lee, Hyun-beom 대한수의학회 1988 大韓獸醫學會誌 Vol.28 No.1

Present study was undertaken in order to evaluate the lead contents of various feedstuffs produced in Korea and the effect of the burning of gasoline by automobiles on the lead contents. Ninety-one samples near and 95 far road were collected from 9 regions(Do). All of the samples were washed, dry-ashed and analyzed for lead content using atomic absorption spectrophotometer. The mean values obtained were checked for significance of difference using computer. The results obtained were summerized as follows: 1. The lead content in ${\mu}g/g$ of agriculture-byproducts were measured with the following mean values and ranges(in parentheses). Rice bran: $2.07{\pm}1.67$ (0-5.00), rice hull $1.84{\pm}1.18$ (0-3.71), rice straw, $1.27{\pm}1.09$ (0-3.62), soybean pod:$4.55{\pm}3.13$ ($1.13{\pm}10.43$), and wheat bran: $1.69{\pm}0.86$ (0-3.65). 2. The lead content in ${\mu}g/g$ of pasture plants were measured with the following mean values and ranges. Kudzu:$2.71{\pm}1.74$ ($0.38{\pm}8.75$), leed: $2.03{\pm}1.61$ (0-4.54), lespedeza:$4.73{\pm}5.93$ (0-31.25), sagebrush: $4.08{\pm}3.75$ (0-12.18), Korean-grass: $2.11{\pm}1.38$ (0-5.50), maizestalk: $2.62{\pm}2.35$ (0-8.65), clover: $3.83{\pm}2.97$ (0-12.19), alfalfa: $7.14{\pm}0.97$ (4.46-9.25), and timothy: $5.86{\pm}4.79$ (0-9.25). 3. Fourteen samples (22.2%) out of 63 agriculture-byproduct samples and 42 (34.2%) out of 123 pasture plant samples showed lead content of more than $3{\mu}g/g$ which are said to be the upper limit value for cattle. 4. No significant difference between the mean lead contents of near road, and those of far road was recorgnized. 5. The regional mean values for all kinds of samples collected in Kyungbuk and Kyungnam were significantly (p<0.05, p<0.10) higher compared to those in Chungnam and Jejudo.6. From these results it may be concluded that the burning of gasoline by automobiler did not affect on the lead contentes of washed feedstuffs produced in Korea at present.

Elk(Alces alces)에 발생(發生)한 Babesiosis

이현범,장인호,이근우,권오덕,김성호,Lee, Hyun-Beom,Jang, In-Ho,Lee, Kuen-Woo,Kwon, Oh-Deog,Kim, Seong-Ho 대한수의학회 1983 大韓獸醫學會誌 Vol.23 No.1

Authors encountered a case of elk babesiosis in Daegu, Korea. The main symptoms observed before the death of the patient were elevated rectal temperature, severe degree of hemoglobinuria, icterus and recumbency. Hematologically, the erythrocyte count was 1.93 million per cu.mm 11% of which were infected with Babesia. Most(88%) of the protozoa were spherical or vacuolated ring form in shape, resembling B. bovis. However, the sizes (0.98-2.85) were slightly smaller than the latter. About 7% of the protozoa were vacuolated oval, the size of which varied from $2.06{\sim}2.95{\times}1.08{\sim}1.97$ ($2.53{\times}1.51$ in average). The remaining 5% were irregular in shape. Pear-shaped were scarcely observed. A three-gears-old Korean native cattle was inoculated subcutaneously with the elk's blood. However, no evidence of susceptibility was observed until 30 days postinoculation.

제1위내용액 이식에 의한 비육우의 농후사료 적응법에 관한 연구

이현범,탁연빈,성은주,김기석,이영주,정재석,장종식,권오덕 한국임상수의학회 1998 한국임상수의학회지 Vol.15 No.1

In feedlot cattle the abrupt change of diet from roughage to a large quantity of grain for the purpose to improve production often results in increased occurrence of rumen acidosis or acute carbohydrate encouragement enterotoxemia, bloats diarrhea liver abscess and laminitis or robot disease. The common management practice to control these problem is to increase the amount of concentrates in the diet in a stepwise manner until the animals are adapted to a high-grain ration. However this practice requires at least about 3 weeks adaptation period and specially prepared adaptation rations which contain various amount of concentrates. Present experiment was undertaken in order to findout the more simple and rapid adaptation method of cattle to a high grain ration. Nineteen Korean calves aging from four to six month were fed artifical hay (Youngchoun Chuk-Hyup, Korea) which contains 10% of concentrates or alfalfa and rye grass hays for two months and randomly alloted to three experimental groups and two control groups. The experimental group-1 was inoculated by stomach tube for two days with li500 ml/day of ruminal fluid fished from Korean beef cattle that had been previously adapted to a high-energy ration. The experimental group-2 was inoculated by trocalization for two days with the same ruminal fluid. The experimental group-3 was inoculated by trocalization with 1,500 ml/day of bacterial culture which contained 2$\times $10$^{9}$/m1 of Gram-negative bacteria derived from adapted luminal fluid. The two control groups were treated with normal saline solution by the same methods. All animals were fed high-energy ration that contained 80% of grain ad libitum for 30-74 days beginning on the third of the treatment. The effect of the inoculation on the adaptation was observed clinicopathologically with the following results; All of the experimental calves inoculated with the ruminal fluid or Gram-negative bacterial culture derived from adapted cattle did not show any signs of rumen acidosis or other related diseases, while most of the control calves did show diarrhea and bloat and a calf laminitis. The average daily weight gain and feed efficiency of experimental calves were slightly improved compared with control calves. Following the feeding of high-grain rational the pH of the ruminal fluid was lowered in both the experimental and control groups. However severe acidosis with the pH of below 5.0 was observed in only a control group-2. The protozoal number in ruminal fluid was markedly decreased during the high-grain feeding in both the experimental and control calves. However the decrease was mere severe in control calves compared with the experimental calves. The activation of the protozoa were completely disappeared within nine hours at the refrigerator temperature (4"C). No significant differences in heamatological and blood chemical values between the experimental and control calves were recognized. However in one control calf which showed clinically laminitis marked elevations of serum glutamic oxaloacetate transaminase and lactic dehydrogenase activities and a decrease of serum glucose level were observed. From these results it would be concluded the intraruminal transplantation of unadapted calves with the adapted ruminal fluid from cattle previously adapted to a high-energy ration prevents disease problem associated with high-grain feeding and improve weight gain and feed efficiency.ency.

개에 발생한 간내 담관상피암의 진단예

이현범,장인호,장종식 한국임상수의학회 1997 한국임상수의학회지 Vol.14 No.1

A 5-years-old female pointer dog was submittedto the hospital with the disease history of gradual distension of abdomen and emaciation for two months. An applesized hard mass was palpated on the right costal arch on physical examination. On blood chemical analysis, the marked elevation of SALT and decrease in serum albumin were detected. On paracentesis, a large volume of blood tinged fluid was detected. The peritoneal fluid contained tumor cells and the numerous blood cells. At autopsy the tumor mass located in the left medial lobe of liver was whitish and firm, and was consisted of many cysts. Histologically the tumor was identified as typical cholangiocellular carcinoma. Metastatic lesions of the tumor were detected in the lung, stomach, spleen, diaphragm, and lymph glands. This observation indicates that the cytological examination of the abdominal fluid have a diagnostic significance in the clinical examination of patients with abdominal tumors.

산다는 건

李賢範 한국외국어대학교 학생통역협회 1990 외대통역협회지 Vol.7 No.1