• 천문학회지
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• 제55권5호
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• pp.173-194
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• 2022

We complete the survey for finite-source/point-lens (FSPL) giant-source events in 2016-2019 KMTNet microlensing data. The 30 FSPL events show a clear gap in Einstein radius, 9 𝜇as < 𝜃_E < 26 𝜇as, which is consistent with the gap in Einstein timescales near t_E ~ 0.5 days found by Mróz et al. (2017) in an independent sample of point-source/point-lens (PSPL) events. We demonstrate that the two surveys are consistent. We estimate that the 4 events below this gap are due to a power-law distribution of free-floating planet candidates (FFPs) dN_FFP/d log M = (0.4 ± 0.2) (M/38 M_⊕)^-p/star, with 0.9 ≲ p ≲ 1.2. There are substantially more FFPs than known bound planets, implying that the bound planet power-law index 𝛾 = 0.6 is likely shaped by the ejection process at least as much as by formation. The mass density per decade of FFPs in the Solar neighborhood is of the same order as that of 'Oumuamua-like objects. In particular, if we assume that 'Oumuamua is part of the same process that ejected the FFPs to very wide or unbound orbits, the power-law index is p = 0.89 ± 0.06. If the Solar System's endowment of Neptune-mass objects in Neptune-like orbits is typical, which is consistent with the results of Poleski et al. (2021), then these could account for a substantial fraction of the FFPs in the Neptune-mass range.

• 한국발생생물학회지:발생과생식
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• 제12권3호
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• pp.283-288
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• 2008

이 연구는 2003년 4월부터 5월까지 전라남도 보성군 겸백면 율어리 소재의 보성강 중류에서 투망과 족대를 이용하여 채집된 모래무지 어미들을 전남대학교 해양기술학부 자원생물실험실로 운반하여 실내 사육하면서 난발생 및 자치어 형태발달을 관찰하였다. 모래무지의 수정란은 구형의 침성부착란으로 난경은 $1.98{\pm}0.19mm$(n=50)였고, 반투명하였다. 부화에 소요되는 시간은 수정 후 164시간부터였고, 이 때 근절수가 31$\sim$32개였으며, 배체의 움직임이 활발하였으며, 머리부터 난막을 뚫고 부화하기 시작하였다. 부화 직후의 자어는 전장이 $4.61{\pm}0.83mm$(n=10)로 난황은 아직 흡수하지 않은 상태였으며, 입과 항문은 열려 있지 않았다. 등쪽과 배쪽, 꼬리쪽에 별모양과 점모양의 흑색소포가 산재하였으며, 눈에는 색소포가 진하게 착색되어 있었다. 부화 후 42일째는 전장 $16.22{\pm}0.65mm$(n=10)로 흑색소포가 두부와 등쪽과 체측면에 따라 짙게 산재하였고, 주둥이 양쪽에 수염이 나타났으며, 체형이나 반문이 성어와 완전히 닮아 있어 치어기로 이행하였다.

• 패션비즈니스
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• 제2권3호
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• pp.137-156
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• 1998

In this study, the researcher studied the historical background, and the traditional culture about dress and ornament of Yunnan Province of China, The results of the study are as follows. 1. Dress and personal ornaments of the Va peoples vary with the locality. Their traditional dress and adornment is characterized by those in the Ximeng area. Men usually wear black or dark blue collarless jackets and black and dark blue loose and short bagged trousers with folding waist. Women usually wear close-fitting sleeveless pullover blouses with V-shaped necks and straight skirts with patterns of red and black cross stripes. 2. Jingpo men have changed to wear shirts with button down the front and trousers. They also entwine white turbans with red bobbles on both ends, and carry diagonally long knives, firelocks and red woolen figured satchels on their shoulders. Women usually wear black velvet blouses with silver bowl-shaped ornaments and chains around collars and on the fronts. They also wear red straight skirts with overlapped slit on the right, waistbands and waist hoops made of rattan and bamboo. 3. The Naxi nationality has a long history and excellent traditional culture. In modern times, women like to wear red, blue or purple laced blouses, long double-layered pleated skirts, waistbands and embroidered shoes. They wear their hair in buns with either hats or kerchiefs over them. While working or going out, they put on their "seven-star" capes made of sheepskin and embroidered with two big circles and seven small ones, while is a symbol of their frog totem. 4. The dress and adorment of the Jinuo people is simple, elegant and has its own unique characteristics. Men usually wear white buttonless shirts with round necks and an opening on the front, knee-length bagged trousers and legging. They wear cloth turbans, earrings and also put small bamboo or silver pipes in the holes of their earlobes. Women wear short buttonless blouses with round necks and seven coloured stripes and thin tight-fitting or embroidered triangular underwear. 5. The dress and ardorment of the Benglong (De' ang) nationality has its own strong national colour. Most of the men wear jackets with buttons arranged diagonally on the front, loose, short trousers and black or white turbans. Some young men like to wear eardrops and silver necklaces. Women's dress and adornment differs according to various branches. For example, the women of the Bielie and Liang branches have their hair shaved and wear black turbans. They use large square silver tablets as buttons and wear blue or black blouses with buttons down the front. 6. Oai men usually wear trousers, white or blue cloth turbans and round-necked shirts with buttons down the front or arranged diagonally on the front. Women usually wear long straight skirt and blouses. But dress and adornment varies in regions. 7. The Bai nationality dress and adornment has unique national style. The dress fabrics are mainly cotton cloth, silk and velvet. Men usually wear red velvet vests over white shirts with buttons down the front or black velvet vests over light blue shirts. They also wear white of blue turbans and carry satchels with beautiful embroidered designs over their shoulders. Women usually wear red velvet vests over white blouses, or black vests over light-coloured blouses.

• 대한수의학회지
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• 제23권2호
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• pp.137-148
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• 1983

This study was made for the better information of the male reproductive system on the meat-type drake, Cherry Belly X White Golden. The epithelium of ductules of epididymal region and deferent duct were observed histologically and histochemically with the progress of their development. India-ink absorbability on the luminal epithelium was also investigated after the administration of India-ink. The results are as follows; 1. Rete testis and various round ductules in immature form appeared in epididymis within 6 weeks after hatching, and simple cuboidal and simple columnar epithelium were found in the epithelia of the ductules within 8 weeks after hatching. Larger ductules were found on epididymal surface which was in the developing stage near to the immature efferent ductule. From 10th to 20th week, various ductules appeared in epididymis, and developing form of efferent ductules were much more increased on epididymal surface. The luminal epithelium of the ductules were composed of ciliated simple columnar and pseudostratified ciliated columnar cells. At the same time, deferent duct appeared. From the 21th week, various ductules in epididymis became abruptly matured. Lumen of rete testis was lined by simple squamous or simple cuboidal epithelium, and that of efferent ductules, having many folds and being larger than any others were lined by pseudostratified ciliated columnar epithelium in which ciliated columnar cells, non-ciliated cells(clear cells) and basal cells were noted. Connecting tubules of star shaped lumen were composed of pseudostratified ciliated columnar epithelium in which ciliated columnar cells, nonciliated cells, and basal cells were observed. The luminal surface of epididymal ducts was smooth and has thick pseudostratified columnar epithelium which was composed of high columnar cells and basal cells. From 26th week after hatching, sperm pooling was started in various ductules. 2. From 4th to 10th week, simple cuboidal epithelium of deferent duct transformed to simple columnar epithelium with the progress of aging. At the basement of epithelium, clear round cells were noted. From 12th to 20th week, high columnar cells with enlongated nucleus were noted on the luminal border of deferent ducts, forming folds of pseuclostratified columnar epithelium. From 20th week, the deferent duct started to have septa in it's lumen and composed mainly of pseudostratified columnar epithelium, and round cells disappeared. From 20th week, the lumen diameter of deferent duct became wider with the progress of aging, but there was no difference among the values of lumen diameter in upper, middle, and lower part of deferent ducts. At 26th week, the pooling period of sperms in deferent ducts, the lumen diameter became rapidly widen, especially in the lower part of deferent ducts. Thickness of muscular layer of ductus deferens showed gradual growth within 24 weeks but did abrupt thickening from 26th week. 3. Saliva resistant PAS granules were dotted on the top of nucleus in efferent ductules epithelium but the amount of the granules were little in the connecting ductules's epithelium. The granules reactive to acid phosphatase were abundant in the some epithelial cells of efferent ductules and connecting ductules, especially above the nucleus of cells. The granules reactive to alkaline phosphatase were noted on the luminal border of efferent ductules. Parts of free border of efferent ductules and middle portion of deferent ducts were stained slightly by alcian blue technique. India ink granules were found mainly in the epithelium of efferent ductules but were few in that of connecting ductules.