• 제목/요약/키워드: Dressing time

검색결과 266건 처리시간 0.023초

In-process Topographical Evaluation of CBN wheel surface

  • Lee, Joosang;Kim, Heenam;Minsung Hong
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 1998년도 춘계학술대회 논문집
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    • pp.507-513
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    • 1998
  • In surface grinding, the conditions of the grinding wheel has much more significant effect on the machined workpiece as compared to other metal removal processes. The contact between the grinding wheel and the workpiece introduce heat and resistance, which restrict the self-dressing of the grits and result in burrs cracks on the workpiece. Therefore, before or during the grinding operation, it is necessary to self-dressing the grinding wheel for more accurate performance. In general, however, the choice of the dressing time has made by the operator's own decision or the condition of the workpiece. In this paper, a new method for finding the optimal dressing time of the grinding wheel is proposed. In order to develop a more sophisticated methodology, a non-contacting in-process optical measurement method using a laser beam has been introduced to find the glazing, loading, and spilling of the grinding wheel Simultaneously, a three-dimensional computer simulation of the grinding operation has been attempted based on the contact mechanism between the grinding wheel and the workpiece. The grains of the grinding wheel are simulated and the optimal dressing time is determined based on the amount of grain wear and work surface roughness.

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1930-1990년대 영화 의상에 나타난 젠더 정체성(III) - 제 3의 성(the third sex)을 중심으로- (A Study on Gender Identity shown in Movie Costumes from 1930′s to 1990′s -Focused on the Third Sex -)

  • 정세희;양숙희
    • 대한가정학회지
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    • 제40권6호
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    • pp.21-37
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    • 2002
  • The third sex implying a mismatch between sex and gender has been regarded as an extreme socio-cultural violation. In its earlier version, such a violation was expressed by cross-dressing; Women's cross-dressing was thought to invoke eroticism, while men's cross-dressing was considered comic or delinquent. However, as feminism developed more with the homosexual identity expressed openly, the third sex began to be visual. Thus, in 1990's, some homosexual monies began to develop to be pluralized enough to suggest the third sex and thereby, change the negative sex into a positive one. In this study, such a pluralization is discussed in terms of invisibility, dichotomy and androgyny. The cross-dressing movies show females in male attire or males in female attire to reflect the third sex. The cross-dressing may be divided into men's playful cross-dressing, women's political cross-dressing and homosexuals'cross-dressing or 'drag'. Gender identity is not an attribute fixed by some physical characteristics, but it tends to be changed or expanded by some social factors over time. In short, it may be a flexible, plural, individual and self-introspective attribute. Movies present diverse types of gender identities, and in particular, the movie costumes specify them. In other words, the costumes may be model means expressing the gender identities, and the gender identities shown in the movies tend to be imitated, re-created or assumed by the audience.

갈고리와 고무밴드를 이용한 새로운 봉합고정드레싱법 (New Tie-over Dressing Method Using Hooks and Rubber Bands)

  • 김국진;이윤정;김남균;김준식;이경석
    • Archives of Plastic Surgery
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    • 제38권4호
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    • pp.552-554
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    • 2011
  • Purpose: Though its general usage, traditional tie-over dressing using suture has a few drawbacks such as difficulty in re-fixation after its opening especially when hematoma or seroma has occurred. It is rather difficult to maintain a stable dressing on curvy parts of body like flank, buttocks and that leads to unsatisfactory results of the surgery. Authors recommend a quick and repeatedly doable method, tie-over dressing that incorporates the usage of hooks and rubber bands. Methods: Debridement was done at a recipient site to be able to do skin graft. A right size of skin graft was prepared and placed upon the defect site with suture. Enough number of hooks were attached using Blue nylon at the normal skin of the edge of grafted area. We Applied dressing with ointment and fluffy gauze then fixed the dressing by attaching a rubber band at the hook to give a certain amount of tension. One or two days after the surgery, we opened the tie-over dressing and repeated the tie-over dressing by reusing the hooks and rubber band. Results: The skin grafts were all successfully taken and by repeating tie-over dressing using hooks and rubber, we could take the advantage of shortened the dressing time and eliminate the inconvenience of the patient and the surgeon by using bandages and fixing tapes. Conclusion: The advantage of tie over dressing using hooks and rubber bsnds are its easy re-doability early detection of probable complications, preventability of reoccurence of hematoma and seroma. Therefore, authors report this as considering the tie-over dressing using hooks and rubber bands is recommendable.

연삭가공에 있어 비가공 시간 단축에 관한 연구(II) (Reducing the Non Grinding Time in Grinding Operations(2nd report) -Decision of Dressing Chance and Depth by the Direct Measurement of Grinding Wheel Surface-)

  • 김선호;안중환
    • 한국정밀공학회지
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    • 제14권8호
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    • pp.101-107
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    • 1997
  • In general, grinding is one of the final machining processes which determines the surface quality of machined products. Since the ground surface is affected by the states of grains and voids on the grinding wheel surface, the wheel should be dressed before the machined surface deteriorates over a quality limit This paper describes a systematic approach to decide a proper dressing chance and an optimal dressing depth for the working grinding wheel. An eddy current sensor and a laser displacement sensor are used to measure the loading on the working wheel surface and the topography of the dressed wheel surface respec- tively. The dressing chance can be properly decided through the relational locus between the amount of handing and the machined surface roughness. An optimal dressing depth to guarantee the less wheel loss and the higher wheel surface quality is decided through the analysis of the variance of topography for the dressed wheel surface, which decreases at three different rates according to the accumulated dressing depth.

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전층식피술에 적용한 폴리우레탄 반밀봉드레싱 (Polyurethane Semi-occlusive Dressing for Full Thickness Skin Graft Application)

  • 이혁구;손대구;김현지;김준형;한기환
    • Archives of Plastic Surgery
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    • 제32권5호
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    • pp.607-612
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    • 2005
  • A traditional tie-over dressing may be applied to support the take of a skin graft. Although there are many advantage of this method, it has significant disadvantages, including time-consuming application. Furthermore, when the dressing is changed, the gauze becomes hard and can be stuck to the graft, causing damage and pain upon removal. The purpose of our study is to evaluate the effect of semi-occlusive dressing using polyurethane foam and film dressing($Allevyn^{(R)}$, $Opsite^{(R)}$) after full thickness skin graft. The authors treated 45 cases including burn scar contracture(n=38), syndactyly (n=1), absence of nipple-areolar complex(n=4), traumatic skin defect(n=1) and contact burn(n=1) with authors' method and 39 patients including burn scar contracture (n=39) with the tie-over dressing between 2000 and 2004. The patients in polyurethane foam and film dressing group ranged from 1 to 62 years of age (mean age, 15.1 years) and the patients in tie-over dressing group ranged from 2 to 60 years of age(mean age, 21.3 years). The postoperative results were analyzed according to the following measures: (1) the duration of graft-taking, (2) the admission period, (3) complications. Compared with the traditional tie-over dressing, polyurethane foam and film dressing was shown to be more successful in a reduced duration of graft-taking, in which was similar to the former in the rate of graft-taking, a reduced admission period and patient's discomfort. We concluded that semi-occlusive dressing using $Allevyn^{(R)}$ and $Opsite^{(R)}$ was an effective method after full thickness skin graft, which was easy to shape to difficult body locations, such as web spaces, fingers and maintains a moist environment for wound healing and does not stick to the wound.

대두(大豆)의 파종기별(播種期別) 질소추비량(窒素追肥量)과 추비시기(追肥時期)가 생육(生育) 및 수량(收量)에 미치는 영향(影響) (Effect of Amount and Time of Nitrogen Top-dressing at Seeding Dates on Growth and Grain Yield of Soybeans)

  • 이충렬;최창렬
    • 농업과학연구
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    • 제14권1호
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    • pp.1-15
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    • 1987
  • 본(本) 실험(實驗)은 대두(大豆)에 대한 질소(窒素)의 추비효과(追肥效果)를 구명(究明)하고자 1986년(年)에 장엽(長葉)콩을 공시(供試)하여 파종기(播種期)(단작(單作)- 5월(月) 15일(日) 파종(播種), 맥후작(麥後作)- 6월(月) 18일(日) 파종(播種))를 주구(主區), 추비량(追肥量)(0, 3, 6, 9 kg/10 a)을 세구(細區), 추비시기(追肥時期)(배토기(培土期), 개화기(開花期))를 세세구(細細區)로 하여 포장실험(圃場實驗)을 실시(實施)하였던 바 그 얻어진 결과(結果)를 요약하면 다음과 같다. 1. 개화(開花) 및 성숙일수(成熟日數)는 배토기(培土期) 추비구(追肥區)가 개화기추비구(開花期追肥區)보다 1일간(日間) 지연(遲延) 되었다. 2. 주경절수(主莖節數)와 절간장(節間長)은 처리간(處理間)에 변이폭(變異幅)이 작고 일정(一定)한 경향(傾向)이 나타나지 않아서 유의성(有意性)이 인정(認定)되지 않았으나 분지절수(分枝節數)는 맥후작(麥後作)에 비(比)하여 단작(單作)에서 많았으며 두 파종기(播種期) 공히 추비량(追肥量)이 증가할수록 개화기(開花期) 추비구(追肥區)에서 보다 배토기추비구(培土期追肥區)에서 그 경향(傾向)이 현저(顯著)하였는데 특히 10 a 당(當) 6 kg 추비구(追肥區)의 분지절수(分枝節數)가 가장 많아서 고도(高度)의 유의성(有意性)이 인정(認定)되었다. 3. 개화(開花) 10, 25 및 40 일후(日後)의 지상부(地上部) 생체중(生體重)과 건물중(乾物重)은 두 파종기(播種期)에 관계(關係)없이 추비량(追肥量)이 많을수록 무거워서 높은 유의성(有意性)이 인정(認定)되었는데 같은 파종기(播種期)에 있어서는 개화기(開花期) 추비구(追肥區)에서 보다 배토기(培土期) 추비구(追肥區)에서 그 경향(傾向)이 더욱 뚜렷하였다. 4. 근류수(根瘤數) 및 근류생(根瘤生) 건물중(乾物重)은 단작(單作)보다 맥후작(麥後作)에서 현저(顯著)히 감소(減少)하였고 파종기(播種期)에 관계(關係)없이 무추비구(無追肥區)에 비(比)하여 질소추비량(窒素追肥量)이 많을수록 감소(減少)되는 경향(傾向)이었으며 개화기(開花期) 추비구(追肥區)보다 배토기(培土期) 추비구(追肥區)에서 그 감소(減少) 경향(傾向)이 더욱 현저(顯著)하여 고도(高度)의 유의성(有意性)이 인정(認定)되었다. 5. 개체당(個體當) 내수(萊數), 입수(粒數) 및 자실중(子實重)은 맥후작(麥後作)보다 단작(單作)에서 많았고 질소(窒素) 추비량(追肥量)이 많을수록 현저(顯著)히 증가하는 경향(傾向)이었는데, 개화기(開花期) 추비구(追肥區)보다 배토기(培土期) 추비구(追肥區)에서 많았고 특히 배토기(培土期)의 10 a 당(當) 6 kg 추비구(追肥區)에서 가장 높았다. 또한 10 a 당(當) 수량(收量)도 처리간(處理間)에 높은 유의성(有意性)이 인정(認定)되었는데 파종기(播種期)에 관계(關係)없이 배토기(培土期)의 10 a 당(當) 6 kg 추비구(追肥區)에서 가장 많았다.

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파워드레싱(Power Dressing)에 대한 사회문화적 연구 (A Study on Power Dressing in Socio-culture)

  • 정미혜
    • 한국의상디자인학회지
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    • 제15권1호
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    • pp.31-45
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    • 2013
  • Fashion appears as a similar sense of form in a regularly cyclical way. The part highlighted in the female body also becomes that way. The social and cultural problem of fashion is also a matter about the selection of a wearer on how to wear in what environment. Power dressing means an attire that makes you feel dignity, intelligence or power and an attire that is needed to succeed in the business society. It is based on the fact that women started wearing tailored suits that were regarded as the exclusive item of men as the women's social activity was actively progressing. The purpose of the study is to analyze the problem of styles in the social and cultural perspectives. The power dressing was repeatedly appeared in 1930s, 1980s and 2000s. Therefore, this study collected photo data and literature documents to analyze and compare shoulders represented during these three periods, and to examine what social cultural environment was operated for each period and how the designers of each period expressed with clothes. Power dressing is characterized by the use of shoulder pad for the first time for 1930s, the extended shoulder for 1980s and the design the extended shoulder with the more decorative method for 2000s. Power dressing has been utilized as women's gain and improvement of social status, flaunting of economical status and a symbol of individuality and identity.

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식초 첨가량에 따른 마요네즈 드레싱의 유화 안정성 (The Effect of Vinegar Concentration the Emulsion Stability of Mayonnaise Dressing)

  • 양신철;한정열
    • 한국조리학회지
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    • 제8권3호
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    • pp.295-308
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    • 2002
  • The effect of vinegar concentration (+30%, 0% and -30%) on the emulsion stability of mayonnaise dressing was studied by the measurement of theological test and sensory evaluation. The emulsion stability of mayonnaise dressing increased with increase in vinegar concentration. The results of steady shear theological test indicated that C sample of the highest vinegar concentration (+30%) exhibited higher emulsion stability than other samples. The dynamic shear datas were similar to steady shear theological data. The mayonnaise dressing samples showed time dependence, which was quantitatively described by the Weltman model. Parameters A and B indicated that the structure of C sample exhibited more stable than that of A (-30%) and B (0%) samples. The amount of oil separation was less than that of A and B samples. The results of sensory evaluation were similar to those of theological and emulsion tests.

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하고초 추출물을 첨가한 샐러드드레싱의 품질 특성 (Quality Characteristics of Salad Dressing added with Prunella vulgaris L. Extract)

  • 류지혜;황영;박영희;김영
    • 한국식품영양학회지
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    • 제31권1호
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    • pp.202-211
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    • 2018
  • This study was conducted to develop a salad dressing using Prunella vulgaris L. (PV) extracts. In addition, the study was also aimed at evaluating the quality characteristics of the salad dressing containing various amounts of PV extracts. Salad dressing was prepared by adding 0% (PD-0), 9.4% (PD-20), 18.8% (PD-40), 28.2% (PD-60), 37.6% (PD-80), 47.0% (PD-100) of PV extract. The quality characteristics (sugar contents, salinity, color value, total phenol contents, total flavonoid contents, DPPH, ABTS+ radical scavenging activities, and sensory acceptability) of the dressing were analyzed. According to the results of the study, the sugar contents and salinity of salad dressing increased according to the added amount of PV extract (p<0.001). The color values of lightness and yellowness of salad dressing increased according to the added amount of PV extract, whereas color value of redness decreased (p<0.001). Antioxidant activities were improved depending on the amount of PV extracts (p<0.001). The sensory acceptability (flavor, medicinal flavor, saltiness, sourness, bitterness and viscosity) were significantly higher in the dressing added with 18.8% PV extracts than in the other samples. Based on this result, a storage experiment was conducted by comparing PD-40 and PD-C. After 4 weeks of storage at $4^{\circ}C$ and $24^{\circ}C$, the quality characteristics were observed and the pH was increased in the later stages of storage (p<0.05). The depicted that, viscosity increased with storage time at $4^{\circ}C$ (p<0.001). General bacteria and coliform were not detected during storage. These results indicated that salad dressing with the addition of 18.8% PV extracts has the best quality.

Wavelet 변환에 의한 숫돌로딩 진단과 노이즈 제거 (Wheel Loading Diagnosis and De-noising by Wavelet Transform)

  • 양재용;하만경;곽재섭;박후명;이상진
    • 한국기계가공학회지
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    • 제1권1호
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    • pp.29-37
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    • 2002
  • The wavelet transform is a popular tool for studying intermittent and localized phenomena in signals. In this study the wavelet transform of cutting force signals was conducted for the diagnosis of grinding conditions in grinding process. We used the Daubechies wavelet analyzing function to detect a sudden change in cutting signal level. STD11 workpiece was 85 times of machined pieces cut by the WA wheel and a tool dynamometer obtained cutting force signals. From the results of the wavelet transform, the obtained signals were divided into approximation terms and detailed terms. At dressing time, the approximation signals were slowly increased and 45 machined times noticed dressing time.

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