• 한국어류학회지
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• 제13권3호
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• pp.161-165
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• 2001

이번 연구에 사용된 문치가자미 어미 (female : 전장 25.1~30.4 cm, male : 전장 24.5~28.5 cm)는 1999년 12월 20일 전라남도 여수시 돌산 군내리 활어위판장에서 어미를 구입하여 전라남도 수산종합관 사육동으로 운반하여 건도법으로 인공 수정시켰고, 부화한 자치어는 사육수조에서 사육하면서 자치어의 형태발달과정을 관찰하였다. 부화 직후 자어의 전장은 3.13~3.42 mm (평균 3.31 mm, n = 10)로 눈은 황갈색을 띠며 입과 항문은 열려 있지 않았다. 부화 후 3~6일째의 자어는 전장이 3.35~4.61 mm (평균 3.45 mm, n = 10)로 입과 항문이 열리고, 난황이 거의 흡수되어 입이 커지면서 섭이활동이 활발하였다. 부화 후 25일째의 자어는 전장 5.47~5.91 mm (평균 5.96 mm, n = 10)로 척색말단이 위로 굽어지기 시작하고, 꼬리지느러미즐기의 원기가 형성되기 시작하였고, 등지느러미의 원기가 출현하였다. 부화 후 35일째의 자어는 전장 6.83~7.60 mm (평균 7.38 mm, n = 10)로 등지느러미 및 뒷지느러미에 줄기가 출현하고, 왼쪽 눈이 조금 이동하였다. 부화 후 55일의 치어는 전장 9.38~11.73 mm (평균 10.03 mm, n = 10)로 눈은 완전히 머리부분의 오른쪽으로 이동하여 체형이나 반문이 성어와 완전히 닮아 있었고, 저서생활로 이행하였다 (D. 68~70 : A. 50~52 : P. 11: V. 6 : C. 18~19).

• Asian-Australasian Journal of Animal Sciences
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• 제30권8호
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• pp.1117-1123
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• 2017

Objective: This study was conducted to compare growth performance, blood components and carcass traits by two feeding systems (concentrate with roughage separately [CON] vs total mixed ration [TMR]) in Hanwoo steers, and to learn the relationship between blood components during fattening or finishing phases and carcass traits in Hanwoo steers. Methods: Sixty steers aged 8 months were allotted to two feeding systems and fed similar amounts of average dry matter and total digestible nutrient throughout whole experimental period according to each feeding program. Steers were weighed monthly, taken blood at the end of growing, fattening and finishing periods, and slaughtered at 30 month of age. Results: Growing performance was higher (p<0.05) in the CON group compared to the TMR group during fattening and finishing periods. The CON group was lower (p<0.05) in blood aspartic acid transaminase, blood urea nitrogen and retinol levels during growing period, but higher in triglyceride and cholesterol levels during fattening and finishing periods compared to the TMR group. The CON group was greater (p<0.05) in rib-eye area, and lighter (p<0.05) red in meat color compared to the TMR group. In the correlation coefficients between blood components of steers and carcass traits, retinol had a negative (p<0.05) correlation with marbling score and rib-eye area. Leptin had a positive (p<0.05) correlation with back fat thickness. Blood cholesterol and triglyceride were positively (p<0.05) correlated with carcass weight and rib-eye area. Conclusion: Growth performance, carcass ribeye area and meat color showed a more desirable result in the CON compared to the TMR in Hanwoo steers. Assessing the accumulated data of carcass traits with blood components including hormones-particularly retinol, cholesterol, triglyceride, and leptin-during the fattening or finishing phases, it may be possible to find a biomarker for determining beef quality in living animals.

• 한국안광학회지
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• 제19권2호
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• pp.153-162
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• 2014

목적: 본 연구에서는 건성안이 일회용 써클소프트렌즈(이하 써클렌즈)의 권장착용시간을 초과하여 하루 이상 착용하였을 때 나타나는 자각적 및 타각적 변화와 렌즈 가시광선투과율의 변화에 대하여 알아보고자 하였다. 방법: 서로 다른 재질(hilafilcon B, nelfilcon A 및 etafilcon A)의 3가지 일회용 써클렌즈를 눈물량이 정상보다 적은 20대의 건성안(30안)에게 착용시키고 자각적 불편감, 착용자의 순목횟수, 각막에서의 렌즈중심안정위치 및 렌즈 가시광선투과율을 렌즈 착용직후와 착용자가 자각적 불편감의 증가로 더 이상 렌즈를 착용하지 못하였을 때에 각각 측정한 후 비교하였다. 결과: 일회용 써클렌즈의 재질에 따라 차이는 존재하였지만 10시간 이상 착용하였을 때부터 자각적 불편감을 호소하며 렌즈착용을 중단하였다. 그러나 비이온성 써클렌즈의 경우는 40시간 이상을 착용하는 건성안도 20% 정도로 나타났다. 건성안은 세 가지 재질 가운데 etafilcon A 재질 써클렌즈의 초과착용 시 가장 민감하게 자각적 불편감을 느끼는 것으로 나타났다. 써클렌즈 착용중단시점에서 대표적인 자각적인 불편감은 이물감, 뻑뻑함, 건조감 및 피곤함이었다. 일회용 써클렌즈를 초과착용하였을 때 순목횟수는 착용직후와 비교하여 렌즈재질에 관계없이 약 20~30%정도 통계적으로 유의하게 증가하였다. 렌즈착용 직후보다 착용 마지막 날에서 수직방향의 렌즈중심안정위치는 동공중심에 가까워졌으나 수평방향은 그 분포가 넓게 나타났으며, 특히 etafilcon A 재질 렌즈의 경우는 중심잡기가 불안정하였다. 또한 새 렌즈와 비교했을 때 초과착용한 후 렌즈의 가시광선투과율은 세 종류 렌즈 모두에서 평균적으로 15%가량 감소하였다. 결론: 이상의 결과에서 건성안에서 일회용 써클렌즈의 초과착용은 건조감과 뻑뻑함을 증가시켜 과도한 이물감을 느끼게 되며, 이는 가시광선투과율의 감소와 더불어 순목횟수의 유의한 증가를 유발하고 궁극적으로는 렌즈중심안정위치의 이탈을 초래함을 알 수 있었다. 또한 개인 및 렌즈재질에 따라서 정도의 차이는 있었으나 건성안은 정상안보다 고함수, 이온성렌즈의 초과착용에 자, 타각적으로 예민하게 반응함을 밝혔다. 따라서 본 연구결과는 건성안의 써클렌즈 착용으로 유발될 수 있는 문제점 및 부작용의 교육을 위한 기초 자료로 제시될 수 있다.

• 사상체질의학회지
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• 제24권4호
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• pp.28-39
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• 2012

Objectives : This study is aimed to develop the algorithm to diagnose Taeeumin's symptomology, by the method of literature research on Sasang Constitutional Medicine. Methods : Applying the sequential differentiations of Taeeumin's symptomology, or exterior-interior disease differentiation, favorable-unfavorable pattern differentiation, and mild-severe-dangerous-urgent pattern differentiation, "Donguisusebowon" and related literatures have been reviewed. Results and Conclusions : 1) 1st step: Taeeumin's exterior pattern and interior pattern are differentiated by the indexes of whole-body cold or heat pattern, sweating, and facial complexion. 2) 2nd step: The favorable pattern of the Taeeumin's exterior disease can be detected by indexes of the existence of fever, generalized pain while the unfavorable one by indexes of the abnormal condition of digestion and feces, and fearful throbbing. The favorable pattern of the Taeeumin's interior disease can be diagnosed based on indexes of eye pain, dry nose, dry throat, and heat symptoms that occur in various parts of the body, while the unfavorable one by indexes of thirsty, urination, feces and specific symptoms which can be induced by dryness. And in the both unfavorable patterns the dark complexion on the faces is revealed. 3) 3rd step: The mild-severe patterns of the favorably exterior disease are differentiated in terms of the condition of fever, while the mild-severe patterns of the favorably interior disease are in differentiated based on whether abnormal symptoms are revealed in the gastrointestinal tract. Both of the unfavorably dangerous-urgent patterns in exterior and interior diseases are differentiated by the symptoms such as tinnitus, dim vision, weakness of legs and back pain, and lack of strength in legs and thighs.

• 한국전기전자재료학회논문지
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• 제18권1호
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• pp.62-67
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• 2005

Recently, polymer insulators that are used for high voltage applications have some advantages such as light weight, small size, vandalism resistance, hydrophobicity and easy making process. During outdoor service of polymer insulators, the surface of the insulating material is frequently subjected to moisture and contamination that lead to dry band arcing. Their tracking resistance, erosion resistance, end sealing and shed design are very important because dry band arcing causes degradation of polymer surface. Aging test to estimate life property of polymer insulator is executed through several international standard such as IEC 61109 and CEA tracking wheel test, but is not getting clear conclusion yet. There are two methods in the diagnosis method of polymer insulator such as off-line and on-line. The diagnosis methods in off-line are external condition analysis by the eye, contaminant analysis on surface, surface analysis, pollution withstand voltage test, power frequency flashover voltage test, lightning impulse flashover test, tensile fracture load test and flexural load test. Polymer material is also investigated it's tracking resistance by adding surface active agent in IEC 587. In this paper, the tracking performance of polymer insulator with salt solution which is added surface active agent. The diagnosis of insulator sample has been analyzed by leakage current and visual examination, STRI guide and thermal image camera.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.156-158
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• 2007

Laser wave length can have evaporation effect by absorption because outer skin or tissue of focus is consisted of water almost though absorption of water occurs more than 90% almost in formation thickness of very thin floor Can operate outer skin, steam by floor and correct incision of formation is available. Suture surgical operation is avaliable to vein or lymph system and surgical operation region can dry and see as eye and radish bleeding surgical operation is avaliable Specially, stability of tube both end output about pulse by weight very, this research can cause various curative effect because can reduce bulk and control easily current wave style of medical laser using electric power conversion device of high frequency way. If introduce ZVS (Zero Voltage Switching) or ZVZCS (Zero Voltage and Zero Current Switching), is more profitable because can reduce switching damage Because electric power department of proposed medical laser can do stable soft-switching in wide subordinate extent introducing ZVZCS technique by the first help and control department composes microcontroller, output current waveform user have free form make. Result that experiment because design and manufacture, brought result that improve of 20% than existing equipment, and will be bought to get into superior result if supplement as systematic late.

• Asian-Australasian Journal of Animal Sciences
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• 제14권1호
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• pp.123-135
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• 2001

Application of growth promoters by means of implantation or supplementation to the diets has been routine in the beef cattle industry of many countries for the better performance in growth and improvement of feed efficiency. Anabolic implants (zeranol, trenbolone acetate, and estradiol with testosterone or progesterone) have generated various positive effects. Zeranol implantation, in general, improved average daily gain (ADG), feed conversion (FC), dressing percentage (DP) and yield grade (YG) of cattle, and increased dry matter intake (DMI). Trenbolone acetate with or without estradiol also increased mean values of ADG and loin eye area (LEA) but reduced DMI and improved FC of cattle. Estradiol with testosterone or progesterone increased ADG and DMI. Anabolic implants, however, had minimal or negative effects on marbling or quality grade. The magnitude of the response to these anabolic implants in performance of beef cattle has varied depending on the type of implants, amount and duration of exposure, age of animals and combination of implants. Administration of bovine somatotropin improved ADG and FC, and decreased fat deposition. Ionophores improved FC in cattle from reduced DMI without great response to ADG. Supplementation of monensin and lasalocid reduced molar proportion of propionate. Monensin and lysocellin increased apparent absorption and retention of some minerals in cattle. Despite the improved cattle performance in growth and FC, results in beef quality from the application of the growth promoters appeared to vary or in conflict under a variety of environmental conditions.

• 환경위생공학
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• 제21권4호
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• pp.1-10
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• 2006

This research is based on self-filling survey which 220 dental hygienists who work in seoul participated on July 2006 through August 2006. This survey was analyzed the experience item and occurred time of the symptoms and the time of acute and vanish of the symptoms that dental office's working environment effects on physical subjective symptom. We suggest a plan to minimizing physical subjective symptom for health manage of dental hygienist. We found out the fact that dental hygienists were unsatisfied with hospital air condition and this polluted air condition cause them physical subjective symptom in work place. As follows analyzed results ventilation time is below the 3-times a day, this may be have some trouble in indoor air quality. The experience the symptoms level is higher then non-experience level in "Fatigue and sleepiness", "Dorsalgia, omarthralgia, cervicodynia", "Hypersensitivity", "Dry eye, itch, smarting", "Headaches" and a subjective symptom is occurred at after 11:00(am) more then 60%, 50% of the dental hygienist. This experience the symptom' pain is vanished after the work and reduced when go out the office and building, respectively. The ratio of the experience the symptoms and starting time the symptoms is anywhere from 12 noon to 4 pm (73.2%) in a day. The time of acute pain the symptoms is anywhere from 12 noon to 4 pm (78.7%) refer to the individual characteristics and work environment.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 심포지엄 논문집 정보 및 제어부문
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• pp.52-54
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• 2007

Laser wave length can have evaporation effect by absorption because outer skin or tissue of focus is consisted of water almost though absorption of water occurs more than 90% almost in formation thickness of very thin floor. Can operate outer skin, steam by floor and correct incision of formation is available. Suture surgical operation is available to vein or lymph system and surgical operation region can dry and see as eye and radish bleeding surgical operation is available. Specially, stability of tube both end output about pulse by weight very, this research can cause various curative effect because can reduce bulk and control easily current wave style of medical laser using electric power conversion device of high frequency way. If introduce ZVS (Zero Voltage Switching) or ZVZCS (Zero Voltage and Zero Current Switching), is more profitable because can reduce switching damage. Because electric power department of proposed medical laser can do stable soft-switching in wide subordinate extent introducing ZVZCS technique by the first help and control department composes microcontroller, output current waveform user have free form make. Result that experiment because design and manufacture, brought result that improve of 20% than existing equipment, and will be bought to get into superior result if supplement as systematic late.

• Archives of Plastic Surgery
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• 제47권4호
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• pp.290-296
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• 2020

In many aging individuals, dermatochalasis and involutional ptosis appear together. Therefore, for functional and aesthetic purposes, ptosis correction and upper blepharoplasty are performed together. The aim of this article is to investigate factors that should be considered in order to achieve good results when simultaneously performing involutional ptosis correction and upper blepharoplasty in aging patients. Involutional ptosis is usually corrected through aponeurosis advancement in mild cases. In moderate or severe ptosis, the Muller muscle and aponeurosis are used together to correct ptosis. Using the two muscles together has the advantages of reducing lagophthalmos and increasing the predictability of outcomes after surgery. Broadly speaking, the surgical method used for involutional ptosis varies depending on the specific case, but unlike congenital ptosis, it is often not necessary to perform overcorrection. In particular, if there are problems such as severe dry-eye symptoms or risk of lagophthalmos, undercorrection should be considered. When performing ptosis correction, the surgeon should be careful not to overdo skin excision; instead, limited excision should be performed. After ptosis surgery, the brow may descend and the double fold may look too small. However, in order to make the double eyelids look larger, the surgeon should consider making the double eyelid design high rather than excising an excessive amount of skin. In some cases, to obtain more natural double eyelids and favorable results, it may be necessary to perform a sub-brow lift or forehead lift before or after involutional ptosis surgery.