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Flehmen Induction with Goats by the Urine of Twenty Animal Species
Kanomata, K],Fukuoka, T,Sasada, H,Masaki, J,Kang, M.S 제주대학교 1988 논문집 Vol.26 No.-
Flehmen은 많은 동물에 있어 求愛과정중에 흔히 볼 수 있는 반응으로 알려져 있다. 反雛動物에 대한 최근의 연구에서 flehmen은 鋤鼻器官에 대해 어떤 pheromone 물질을 운반하는 메키니즘에 수반된 것일지도 모른다고 시사하고 있다. 그래서 이들 변화는 발정 발견을 위해 이용될 수 있을 것으로 생각 되었다. 本 實驗은 다른 동물의 尿가 같은 동물의 尿처럼 flehmen을 誘起할 수 있을지 확인하기 위하여 Saanen과 이들 雜種인 雄山羊 8頭, 雌山羊 3頭, 去勢한 山羊 3頭를 공시하였다. 尿는 15種의 哺乳動物, 3種의 鳥類,2種의 파충류 등 모두 20種을 채취하여 실험할 때까지 냉동 보존 했다. 尿는 주로 코에 spray 해주었으나 약간 굳어 있는 것에 대해서는 코로 냄새를 맡게 했다. flehmen 지속시간은 0,1-9, 20-39 및 40초 이상 등 네가지로 구분 기록하였다. 각각의 尿는 어느 山羊에 있어서도 반응을 일으켰다. Sample 間 및 번식주기에 따라 강도에 많은 차이를 나타냈다. 개체 차이가 현저했음에도 불구하고 일반적으로 雄山羊은 雌山羊보다 더 강한 반응을 보였다. 거세산 山羊은 중간형을 나타냈다. Antiandrogen을 주사한 雄山羊의 반응은 억제되는 경향이었다. 이 결과는 산양에서 flehmen이 同種에서 처럼 다른 種의 尿로 부터도 誘起될 수 있다는 것과 그리고 androgen은 이 반응을 조절하는 factor의 하나일지도 모른다는 것을 시사했다. Flehmen is well-known response which often occures during the process of courtship in most mammals. Recent studies with domestic ruminants suggest that the flehmen may be involved in the mechanism of transferring some pheromonal substances to vomeronasal organ. Thus, variety of its significance has been supposed, besides that male animals may use it for estrus detection. In this experiment, 8 male, 3 female and 3 castrated goals of Saanen and its hybrid were used to ascertain whether urine from alien species can induce flehmen as that from same species. Urine was collected from twenty species consisting of 15 mammals. 3 birds and 2 reptiles and frozen until use. Mostly urine was sprayed to the nose of goats, but some coagulated ones were sniffed. Duration of flehmen was scored to four ranks as 0, 1-19, 20-39 and >40 sec. Each urine sample induced the response in any goats. However, much differnce in the intensity was found between the samples and according to the reproductive state of the receptor goats. Although individual difference was manifest, male goats generally showed more intense respomse than did female. Castrated goats showed the intermediate pattern. Administration of antiandrogen to the male goat tended to reduce the response. The results indicate that flehmen in the goat could occur for the urine of alien species as that of same species and the androgen may be one of factors regulating the response.
Flehmen Induction with Goats by the Urine of Twenty Animal Species
Kang, M.S.,Sasada, H.,Kanomata, K.,Fukuoka, T.,Masaki, J. 제주대학교 농과대학 제주도축산문제연구소 1989 畜産論叢 Vol.4 No.1
Flehmen is well-known response which often occurs during the procesa of courtship in most mammals. Recent studies with domestic ruminants suggest that the flehmen may be involved in the mechanism of transferring some pheromonal substances to vomeronasal organ. Thus, variety of its significance has been supposed, besides that male animals may UK it for estrus detection. In this experiment, 8 male, 3 female and 3 castrated goats of Saanen and its hybrid were used to ascertain whether urine from alien species can induce flehrnen aa that from same species. Urine was collected from twenty species consisting of 15 mammals, 3 birds and 2 reptiles and frozen until UM. Mostly urine was sprayed to the nose of goats, but some coagulated ones were miffed. Duration of flehmen was scored to our ranks as 0, l-19, 20-39 and > 40 sec. Each urine sample induced the response in any goats. However, much difference in the in-tensity was found between the samples and according to the reproductive state of the receptor goats. Although individual difference was manifest, male goats genenlly showed more intense response than did female. Castrated goats showed the intermediate pattern. Administration of antiandrogen to the male goat tended to reduce the response. The results indicate that flehmen in the goat could occur for the urine of alien species as that of same species and the androgen may be one of the factors regulating the response.
PRESSURE DEPENDENCE OF THE CURIE TEMPERATURE IN MnAlGe
S. Endo,H. Matsuzaki,F. Ono,T. Kanomata,T. Kaneko 한국자기학회 1995 韓國磁氣學會誌 Vol.5 No.5
The pressure dependence of the Curie temperature was determined in 2dimensional like ferromagnet, MnAlGe up to a maximum pressure of 7.5 ㎬ through measurements of electric resistance vs temperature curves. The pressure coefficient was positive with a considerably high rate of 9 K/㎬ in the low pressure ragion, while it decreased gradually down to one order of magnitude smaller value at the maximum pressure. It was concluded that ther is an upper limit of about 550 K in the super-exchange type ferromagnetic interaction between Mn layers.
Pressure Effect on the Phase Transition Temperatures of Ni2Mn1−xCuxGa
Tomoya Miura,Yoshiya Adachi,Keita Endo,Ryosuke Kainuma,Takeshi Kanomata 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12
The martensitic transition temperature TM and the Curie temperature TC of the ferromagneticalloys Ni2Mn1−xCuxGa (0 ≤ x ≤ 0.40) were measured under pressure. We estimated the pressurederivatives dTM/dp and dTC/dp from the results. The values of dTM/dp and dTC/dp for Ni2MnGa(x = 0) were -4.5 K/GPa and +3.9 K/GPa, respectively. The values of dTM/dp increased fromnegative to positive with increasing x in Ni2Mn1−xCuxGa. The values of dTC/dp approached zerowith increasing x.
MAGNETIC PROPERTIES OF FePt₃ ORDERED ALLOY
H.Yoshida,H.Fujimorl,T.Kaneko,S.Abe,K.Watanabe,M.Matsumoto,T.Yoshida,T.Kanomata 한국자기학회 1995 韓國磁氣學會誌 Vol.5 No.5
The magnetic properties for Fe₂₄Pt_(76) and Fe_(26)Pt_(74) have been investigated. The temperature vs. magnetic susceptibility curve for Fe₂₄Pt_(76) had no peak near the Neel temperature. The magnetization process at 4.2 K showed only a linear variation up to the high magnetic field of 240 kOe. That for Fe_(26)Pt_(74) at 77 K showed a metamagnetic transition at 100 kOe. These properties were discussed on the basis of a band picture.
INVESTIGATION ON FERROMAGNETIC Mn₁-XCOXPt₃ ORDERED ALLOYS
T.Kaneko,H. Fujimori,H.Yoshida,K.Watanabe,S.Abe,M.Matsumoto,T.Yoshida,T.Kanomata 한국자기학회 1995 韓國磁氣學會誌 Vol.5 No.5
The magnetization of Mn_(1-X)Co_XPt₃ ordered alloys was measured at various temperatures and the pressure effect on Tc for X=0.25, 0.5 and 0.6 was examined. The X dependence of Tc determined by Arott plot has a minimum near X=0.6. The field-cooling effect measurement for X=0.5 shows a reentrant spin glass behavior. It is found that there is a concentration showing no pressure dependence of Tc between X=0.25 and 0.5. These magnetic properties are discussed with a rigid band model.