• Title/Summary/Keyword: Leopard

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세계 각국의 전차의 발전추세 (2)

  • Park, Seong-Won
    • Defense and Technology
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    • no.4 s.182
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    • pp.58-71
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    • 1994
  • 제2차 세계대전이후 화력향상, 기동력 증대 방어력 보강 등에 중점을 두어 전차 개발이 이루어졌는데, 이런 흐름의 집대성이 독일의 Leopard, 미국의 M1, 영국의 Challenger의 등장으로 나타났다.

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Species Distribution Modeling of Endangered Mammals for Ecosystem Services Valuation - Focused on National Ecosystem Survey Data - (생태계 서비스 가치평가를 위한 멸종위기 포유류의 종분포 연구 - 전국자연환경조사 자료를 중심으로 -)

  • Jeon, Seong Woo;Kim, Jaeuk;Jung, Huicheul;Lee, Woo-Kyun;Kim, Joon-Soon
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.17 no.1
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    • pp.111-122
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    • 2014
  • The provided habitat of many services from natural capital is important. But because most ecosystem services tools qualitatively evaluated biodiversity or habitat quality, this study quantitatively analyzed those aspects using the species distribution model (MaxEnt). This study used location point data of the goat(Naemorhedus caudatus), marten(Martes flavigula), leopard cat(Prionailurus bengalensis), flying squirrel(Pteromys volans aluco) and otter(Lutra lutra) from the 3rd National Ecosystem Survey. Input data utilized DEM, landcover classification maps, Forest-types map and digital topographic maps. This study generated the MaxEnt model, randomly setting 70% of the presences as training data, with the remaining 30% used as test data, and ran five cross-validated replicates for each model. The threshold indicating maximum training sensitivity plus specificity was considered as a more robust approach, so this study used it to conduct the distribution into presence(1)-absence(0) predictions and totalled up a value of 5 times for uncertainty reduction. The test data's ROC curve of endangered mammals was as follows: growing down goat(0.896), otter(0.857), flying squirrel(0.738), marten(0.725), and leopard cat(0.629). This study was divided into two groups based on habitat: the first group consisted of the goat, marten, leopard cat and flying squirrel in the forest; and the second group consisted of the otter in the river. More than 60 percent of endangered mammals' distribution probability were 56.9% in the forest and 12.7% in the river. A future study is needed to conduct other species' distribution modeling exclusive of mammals and to develop a collection method of field survey data.

Accumulation Levels and Distribution Characteristics of Polychlorinated Biphenyls in Crucians and Leopard Frogs from the Nakdong River Basin (낙동강 유역에 서식하는 붕어와 황소개구리 체내의 Polychlorinated biphenyls의 축적도와 분포특성)

  • Moon, Ji Yong;Lee, Sung In;Song, Heeyoung;Lee, Kyoung Jin;Choi, Kyunghee;Jeong, Gi Ho
    • Analytical Science and Technology
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    • v.17 no.4
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    • pp.347-354
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    • 2004
  • We collected crucians (Carassius auratus) and leopard frogs(Rana pipiens) along the Nakdong River and the basin area at five locations from Koomi to Nakdong-estuary. The muscular tissue were separated and a GC-MSD system was used for quantification of PCBs. The 62 PCB congeners which represent total PCB levels were selected as analytes. We determined concentrations of PCBs and studied distribution characteristics by individual congeners and homologs. In the crucian, 24 congeners were detected and total PCB levels ranged from 0.74 to 5.41 ng/g wet weight. In the leopard frog, however, only 2 congeners were detected from Nakdong estuary only. The PCB level was 0.24 ng/g wet weight, around 22 times lower than the crucians. The PCB 153 showed the highest concentrations in the congeners and penta- and hexa-CBs showed the strong predominance which accounted for 78% of the total PCBs.

Wildlife as Potential Vectors of African Swine Fever Virus

  • Lim, Sang Jin;Han, So Hyeon;Park, Joong Yeol;Kim, Nam Hyung;Namgung, Hun;Oh, Yeonsu;Park, Yung Chul
    • Journal of Forest and Environmental Science
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    • v.38 no.1
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    • pp.55-63
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    • 2022
  • The African swine fever virus (ASFV) remains contagious for a long time, not only in the carcass, but also in the bone marrow of an infected animal. The scavenging activity of various animals on ASFV-infected carcasses is a likely risk factor for ASFV transmission. Thus, we conducted this study to determine whether scavengers are potential vectors for ASFV. In nonprotected wild boar carcasses on the forest floor, we investigated the seasonal patterns of carcass decomposition and scavenger visits for feeding on them. The duration from fresh to early skeletonization (only bones and leather remaining) of adult carcasses was 37.6±23.1 days (n=3, range=11-51 days) in winter. The duration from fresh to later skeletonization (only bones and some fur remaining) of all carcasses, including subadult carcasses, was 8.3±2.5 days (n=4, range=7-12 days) in summer. At all three study sites, leopard cats (30.3%), large-billed crows (21.6%), and golden eagles (18.1%) were the frequently visiting species, representing more than 10% of the total visits (343 visits) in winter, whereas raccoons (21.9%), grey-backed thrushes (39.4%), and eyebrowed thrushes (14.7%) were the most frequent visitors in summer. In winter, crows or cinereous vultures were the first animals to arrive at a carcass; in summer, raccoons or crows arrived first. Our results showed that wild boars, raccoons, and leopard cats relatively frequently visited wild boar carcasses and stayed there for a long time. Wild rodents chewing on or staying near carcasses were photographed during winter. In addition to wild boars, thus, mammals, such as raccoons, leopard cats and rodents, and birds, such as accipitrids and thrushes, may be spreaders of ASFV in South Korea.

Time-resolved Fluoroimmunoassay (TR-FIA) Analysis of Fecal Progesterone and Estradiol in Leopard Cats (Prionailurus bengalensis) (삵에서 TR-FIA를 이용한 분변내 Estradiol과 Progesterone의 검사)

  • Kim, Young-Seob;Kim, Ji-Yong;Jung, So-Young;Lee, Bong-Joo;Shin, Nam-Shik
    • Journal of Veterinary Clinics
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    • v.27 no.6
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    • pp.693-697
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    • 2010
  • This study, conducted with four leopard cats (Prionailurus bengalensis), used time-resolved fluoroimmunoassay (TR-FIA) to analyze estradiol and progesterone concentrations in fecal samples. We measured fecal samples taken during estrus period, diestrus period, pregnancy and non-pregnancy period. During estrus (February), the mean minimum estradiol concentration was $4.02{\pm}1.9$ng/g, and the mean maximum was $86.01{\pm}35.2$ng/g (dry fecal weight). During diestrus (November), the mean minimum estradiol concentration was $4.42{\pm}1.32$ng/g and mean maximum was $15.62{\pm}6.48$ng/g (dry fecal weight). Midgestation (April), the mean minimum progesterone concentration was $427{\pm}24.49$ng/g and the mean maximum was $1490{\pm}265.27$ng/g. During non-pregnancy (November), the mean minimum progesterone concentration was $71.25{\pm}29.61$ng/g and the mean maximum was $291.75{\pm}90.30$ng/g. These results suggest that steroid hormone analysis of feces using TR-FIA is a valid method for noninvasively determining ovarian activity associated with estrus and pregnancy in leopard cats. This study will contribute to building breeding management and reproductive plans for endangered species.

Identity of Spirometra theileri from a Leopard (Panthera pardus) and Spotted Hyena (Crocuta crocuta) in Tanzania

  • Eom, Keeseon S.;Park, Hansol;Lee, Dongmin;Choe, Seongjun;Kang, Yeseul;Bia, Mohammed Mebarek;Ndosi, Barakaeli Abdieli;Nath, Tilak Chandra;Eamudomkarn, Chatanun;Keyyu, Julius;Fyumagwa, Robert;Mduma, Simon;Jeon, Hyeong-Kyu
    • Parasites, Hosts and Diseases
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    • v.57 no.6
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    • pp.639-645
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    • 2019
  • In the present study, a Spirometra species of Tanzania origin obtained from an African leopard (Panthera pardus) and spotted hyena (Crocuta crocuta) was identified based on molecular analysis of cytochrome c oxidase I (cox1) and NADH dehydrogenase subunit I (nad1) as well as by morphological observations of an adult tapeworm. One strobila and several segments of a Spirometra species were obtained from the intestine of an African male leopard (Panthera pardus) and spotted hyena (Crocuta crocuta) in the Maswa Game Reserve of Tanzania. The morphological characteristics of S. theileri observed comprised 3 uterine loops on one side and 4 on the other side of the mid-line, a uterine pore situated posterior to the vagina and alternating irregularly either to the right or left of the latter, and vesicular seminis that were much smaller than other Spirometra species. Sequence differences in the cox1 and nad1 genes between S. theileri (Tanzania origin) and S. erinaceieuropaei were 10.1% (cox1) and 12.0% (nad1), while those of S. decipiens and S. ranarum were 9.6%, 9.8% (cox1) and 13.0%, 12.6% (nad1), respectively. The morphological features of the Tanzania-origin Spirometra specimens coincided with those of S. theileri, and the molecular data was also consistent with that of S. theileri, thereby demonstrating the distribution of S. theileri in Tanzania. This places the leopard (Panthera pardus) and spotted hyena (Crocuta crocuta) as new definitive hosts of this spirometrid tapeworm.

The Acquisition Methodology Study of User Trace Data in Mac OS X (Mac OS X 운영체제상의 사용자 흔적정보 수집방안 연구)

  • Choi, Joon-Ho;Lee, Sang-Jin
    • The KIPS Transactions:PartC
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    • v.17C no.4
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    • pp.335-346
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    • 2010
  • Mac OS X is the Computer Operating System that develop in Apple Inc. Mac OS X is the successor to Mac OS 9 Version which had been Apple's primary operating system since 1984. Recently, Mac OS X 10.6 (Snow Leopard) has been manufactured and is distributed to user. Apple's Mac OS X Operating System is occupying about 10% in the world Operating System market share. But, Forensic tools that is utilized on digital forensic investigation can not forensic analysis about Mac OS X properly. To do forensic investigation about Mac OS X, information connected with user's action and trace can become important digital evidence in Operating System. This paper presents way about user trace data acquisition methodology in Mac OS X.

A Study on Aesthetic Characteristics of Modern Fur Fashion - Focused on Vogue since the 1980s - (현대 모피패션에 나타난 미적특성에 관한 연구 - 1980년대 이후 Vogue를 중심으로 -)

  • Hwang, Jae-Yun;Kim, Jeong-Mee
    • Journal of the Korea Fashion and Costume Design Association
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    • v.17 no.4
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    • pp.161-172
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    • 2015
  • In this study, characteristics of modern fur fashion were reviewed and aesthetic characteristics shown in fur fashion were analyzed. The results of this study are as follow. Aesthetic characteristics shown in fur fashion between 1980s and 2000s are conspicuousness, sensuality, elegance, activity, humor and abnormality. Conspicuousness was displayed in oversized fur coat in vivid leopard pattern, mink coat trimmed with rich fox fur or leopard patterned fur jacket in hot pink. Sensuality was displayed in white and gray soft mink coat worn over mini dress, soft mink jacket which is short enough to expose legs or soft fox best accentuating chest and arms. Elegance was displayed in soft fox coat in silver, luxurious mink coat with slim silhouette that flows with body line or silver bolero made of mink and silk with slim silhouette. Activity was presented in mink pullover with loose silhouette or rabbit jacket that emphasized functionality by having zippers or hem made of rubber. Humor was presented in unique and humorous patterned fur jacket or exaggerated and unique form of fox bolero. Abnormality was presented in mink jacket made of combining alien material with deformed proportion and form or outer that emphasized vague form by using long and big fox fur.

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Control Effect of Coffee Ground Compost and Velvet bean Against Root-Knot Nematode, Meloidogyne incognita in Pumpkin (커피박 퇴비와 벨벳콩을 이용한 호박의 고구마 뿌리혹선충 방제효과)

  • Kim, Min-Jeong;Shim, Chang-Ki;Kim, Yong-Ki;Hong, Sung-Jun;Park, Jong-Ho;Han, Eun-Jung;Huh, Chang-Seok;Ryu, Young-Hyun;Jee, Hyeong-Jin;Kim, Seuk-Chul
    • The Korean Journal of Pesticide Science
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    • v.20 no.1
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    • pp.47-55
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    • 2016
  • The purpose of this study was to control root-knot nematode, Meloidogyne incognita on pumpkin seedling with 10%, 20% coffee ground compost and 1% plant velvet bean powder (plain skin bean, leopard skin bean, hole plant, bean pod). Among the root-knot nematode insecticide treatments, the velvet bean plant powder was the highest mortality rate with 83.2% in greenhouse condition. In addition, the root-knot nematode second juvenile mortality significantly increased with the lapse of processing time for each concentration of leopard skin velvet bean extract in vivo. After 24 hours, the mortality rate of root-knot nematode showed the highest at 1.2% and 2.4% of leopard skin velvet bean extract. The growth promoting effect of seedlings pumpkin, 20% of coffee ground compost treatments inhibited the growth of pumpkin seedlings and 1% the tiger pattern velvet beans powder was the most to promote the growth of pumpkin seedlings. However, the results indicated that the organic materials of velvet beans and coffee ground compost are expected to be able to effectively control the root-knot nematode and further studies will be needed for the concentration and application methods.