• 한국농업기계학회:학술대회논문집
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• 한국농업기계학회 2017년도 춘계공동학술대회
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• pp.157-157
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• 2017

To minimize the damage by wild birds and acquire the benefits such as protection against weeds and maintenance of water content in soil, the mulching black color vinyl after seeding should be carried out. Non-contact and non-destructive methods that can continuously determine the locations are necessary. In this study, a crop position detection method was studied that uses infrared thermal image sensor to determine the cotyledon position under vinyl mulch. The moving system for acquiring image arrays has been developed for continuously detecting crop locations under plastic mulching on the field. A sliding mechanical device was developed to move the sensor, which were arranged in the form of a linear array, perpendicular to the array using a micro-controller integrated with a stepping motor. The experiments were conducted while moving 4.00 cm/s speed of the IR sensor by the rotational speed of the stepping motor based on a digital pulse width modulation signal from the micro-controller. The acquired images were calibrated with the spatial image correlation. The collected data were processed using moving averaging on interpolation to determine the frame where the variance was the smallest in resolution units of 1.02 cm. Non-linear integral interpolation was one of method for analyzing the frequency using the normalization image and then arbitrarily increasing the limited data value of $16{\times}4pixels$ in one frame. It was a method to relatively reduce the size of overlapping pixels by arbitrarily increasing the limited data value. The splitted frames into 0.1 units instead of 1 pixel can propose more than 10 times more accurate and original method than the existing correction method. The non-integral calibration method was conducted by applying the subdivision method to the pixels to find the optimal correction resolution based on the first reversed frequency. In order to find a correct resolution, the expected location of the first crop was indicated on near pixel 4 in the inversion frequency. For the most optimized resolution, the pixel was divided by 0.4 pixel instead of one pixel to find out where the lowest frequency exists.

• 한국의류산업학회지
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• 제20권5호
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• pp.583-591
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• 2018

This study investigated the current production of women's sportswear tights among a total of 813 yoga, gym and training tights on the market to provide basic data for the development of women's sportswear tight tops. The results found the following: First, according to the analysis of women's sportswear tight tops by brand, polyester, nylon and polyurethane were most used. In addition, elastic, breathable and quick-dry, sweat absorbent products were commonly found. In terms of design, crew neck and sleeveless styles were popular. In addition, mesh was frequently applied to the top of the chest and upper part of the back. The size was mostly marked in S, M and L, and the size range was very large by brand. For color, achromatic color was most common. In terms of price, 'KRW 50,000-100,000' was frequently found. Second, yoga tights were compared to gym & training wear. In the case of yoga tights, elastic, various products in diverse design (e.g., crew neck, sleeveless, long sleeve, etc.) and colors (e.g., red, black, etc.) made of breathable and water-absorbing fabric were most produced. In particular, a combination of mesh materials was common. In gym and training wear, crew neck and short-sleeve styles in achromatic color made of elastic, breathable and quick-dry, seat absorbing fabric were most produced.

• 한국의류산업학회지
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• 제17권4호
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• pp.646-656
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• 2015

This study investigates the conditions of Korean naval duty and combat uniforms to develop a new design. Survey participants consisted of, 723 Sailors ($25.3{\pm}6.9yr$ in age, $43{\pm}53$ months in work experience, $174{\pm}6cm$ in height, $71{\pm}9kg$ in body mass) serving in the Korean Navy for over 12 months. The questionnaire consisted of 72 questions about anthropometric characteristics, preferred design, textiles, wear mobility, and subjective perceptions. The results showed that the preferred colors for future naval duty uniforms were blue in summer (69%) and black in winter (62%). Digital camouflage pattern (60%) and darker colors on the inside of shirt collar (87%) and the edge of sleeves (84%) were preferred. They favored more than one pocket on the upper arm and chest of the shirts (58%), narrower width around pant legs and hems than the current clothing (63%), self-controlled elastic waist (55%) and no cargo type pocket on the pants (45%). There were requirements to alleviate excessive heat stress in summer and to protect from the cold and wind in winter. Wrinkle-free (85%), anti-bacterial (78%), water-proof (75%), oil-proof (90%), and elastic (67%) textiles were preferred for Korean navy uniforms. These results will be applied to develop the next generation Korean navy uniforms.

• 한국식생활문화학회지
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• 제26권1호
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• pp.39-52
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• 2011

This study examined the types and cooking methods for dasik (traditional pressed sweet), as recorded in 16 old Joseon dynasty (1392-1909) studies. The ingredients used in dasik during the Joseon dynasty were categorized into cereal powders, tree fruits, flower powders, root clods, dry-fish beef powders, and vegetables. In the early, middle, and late eras of the Joseon dynasty, $1^{st}$ set (two, five, and 70 kinds of dasik), $2^{nd}$ set (two, four, and 16 kinds of dasik) were prepared using cereal powders, and during the middle and late eras of the Joseon dynasty one and 22 kinds of dasik were prepared using tree fruits. During the late eras of the Joseon dynasty, seven kinds of dasik were prepared using flower powders, 11 kinds of dasik were prepared using root clods, 12 kinds of dasik were prepared using dry-fish beef powders, and two kinds of dasik were prepared using vegetables. The frequency of the ingredients were in the order of Huek-im (黑荏), Hwang-yul (黃栗), Jin-mal (眞末), Song-wha (松花), and Nok-mal (菉末) during the Joseon dynasty. To prepare dasik, the ingredients were mixed with honey, soy sauce, sesame oil, pepper, and water or ground and shredded to prepare for pressing and for abstract dasik, respectively. The appearance and taste of dasik varied, thereby resulting in nutrient supplementation, as the types of ingredients increased throughout the Joseon dynasty. This observation may be associated with the commercial industrial development that prevailed during the late Joseon dynasty. Further investigation will be conducted on the recipes and ingredients recorded in these old studies to develop a standardized recipe for the globalization of dasik.

• 한국광물학회지
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• 제10권2호
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• pp.126-138
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• 1997

Serpentinite of the Yesan-Gongju-Cheongyang area has been formed by serpentinization of ultramafic rocks. The ultramafic rock might be composed mainly of oilvine with minor pyroxene and amphibole. Olivine has a considerably restricted chemical compositional ranging from Fo90 to Fo93. Fresh serpentinite containing large amount of oilvine is usually massive in occurrence and dark green to black in color. Serpentine minerals occur not only as major mineral of serpentinite, but also as remnants in the talc ore which was formed from serpentinite. XRD study indicates that antigorie is the most abundant serpentine mineral of the serpentinite. Serpentinite consisting of antigorite usually shows non-pseudomorphic texture, whereas that consisting of lizardite shows pseudomorphic texture. Antigorite is found along the margins or fractures of olivine grains resulting in the formation of network of magnetite which was formed at the time of serpentinization. Lizardite, subordinate constituent mineral of serpentinite, frequently shows pseudomorphic mesh-texture after olivine. The chemical differences between antigorite and lizardite/chrysotile are small, so both minerals are not easily discernible with the electron microprobe. Antigorite occuers as elongate blades, flakes, or plates forming interpenetrating texture to obliterate previous textures. SEM study also shows that most serpentine minerals occur in platy or tabular form rather than in asbestiform. Fractures formed after main serpentinization are observed within the pseudomorphic central olivine grain. Careful observation of the serpentine pseudomorphs gives a great deal of data on the pre-serpentinization nature of the serpentine pseudomorphs gives a great deal of data on the pre-serpentinization nature of the ultramafic rocks. It is inferred that the serpentinization took place after the emplacement of ultramafic body into the relatively wet environment ceased and the cooling intrusive body crossed into the stability field of serpentine. It is inferred that the final pervasive serpentinization took place over a long time, by hydrothermal water supplied through the fracture system produced during emplacement of ultramafic rock.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2005년도 Proceedings of ISRS 2005
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• pp.538-541
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• 2005

Tidal flats develop along the south coast ofthe Korean peninsula. These areas are famous for sea farming. Specially, strong and coherent radar backscattering signals are observed over oyster sea farms that consist of artificial structures. Tide height in oyster farm is possible to measure by using interferometric phase and intensity of SAR data. It is assumed that the radar signals from oyster farm could be considered as double-bouncing returns by vertical and horizontal bars. But, detailed backscattering mechanism and polarimetric characteristics in oyster farm had not been well studied. We could not demonstrate whether the assumption is correct or not and exactly understand what the properties of back scattering were in oyster farm without full polarimetric data. The results of AIRSAR L-band POLSAR data, experiments in laboratory and JERS-l images are discussed. We carried out an experiment simulating a target structure using vector network analyser (Y.N.A.) in an anechoic chamber at Niigata University. Radar returns from vertical poles are stronger than those from horizontal poles by 10.5 dB. Single bounce components were as strong as double bounce components and more sensitive to antenna look direction. Double bounce components show quasi-linear relation with height of vertical poles. As black absorber replaced AI-plate in bottom surface, double bounce in vertical pole decreased. It is observed that not all oyster farms are characterized by double bounced scattering in AIRSAR data. The image intensity of the double bounce dominant oyster farm was investigated with respect to that of oyster farm dominated by single bounce in JERS-l SAR data. The image intensity model results in a correlation coefficient (R2 ) of 0.78 in double bounce dominant area while that of 0.54 in single bouncing dominant area. This shows that double bounce dominant area should be selected for water height measurement using In8AR technique.

• 한국식품영양과학회지
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• 제22권4호
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• pp.470-475
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• 1993

대구피 젤라틴을 효소적으로 가수분해하여 얻어진 가수분해물의 분자량 분포 및 아미노산 조성을 살펴보고 이 가수분해물을 이용해 조미간장을 제조하였고 그 품질을 시판 간장과 관능적으로 비교, 검토하였다. 가수분해물의 분자량은 5,800Da영역이 주종이었으며 분자량 1,100Da, 1,500Da및 2,700Da정도의 펩티드성 분자도 존재하였다. 아미노산은 단맛을 내는 아미노산(glycine, proline, serine, alanine 및 hydroxypro-line)과 감칠맛, 신맛을 내는 아미노산(glutamic acid, aspartic acid)이 전체의 65.9%를 차지하고 있었다. 반면 쓴맛을 내는 아미노산(arginine, tyrosine, phenylala-nine, valine, leucine, methionine 및 histidine)은 전체의 26.65%에 불과하였다. 가수분해물 10.0g,식염 10.0g, 설탕 3.0g, MSG 0.5g, 카라멜분말 0.1g, 양조식초 3.0$m\ell$, 마늘분말 0.05g, 검은 후추분말 0.1g 및 감초분말 0.2g을 물 100.0$m\ell$에 용해하여 열처리한 다음 여과하여 얻어진 원액과 시판 양조간장을 8 : 2(v:v)의 비율로 혼합하여 제조한 조미간장은 시판 3종류의 화학간장과 비교해 관능적으로 손색이 없었다.

• 한국의류학회지
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• 제13권3호
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• pp.207-222
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• 1989

New process for the preparation of the artificially soild cloth (ASC) used for detergency evaluation was developed and its detergency was also studied. ASC was prepared by the dipping of cotton cloth in the water in which oily soil, protein (gelatine), carbon black and clay had been dispersed. The clay used for this ASC was red yellowish soil around Mt. Kumjung and was a typical soil in Pusan area. Adhesive status of soil at prepared ASc was examined by an electron microscope, and crystallyzation and color change of used clay were evaluated with the determination of X-ray diffraction and surface reflectance. For the evaluation of detergency by the washing with commercial and model detergents, the behavior of soil removal from this ASC comparing with naturally soiled collar cloth was examined. Those results are summerized as followings; 1) Adhesive ststus of soil at prepared ASc was very similar to that of naturally soiled collar cloth. 2) A crystalline of clay calcined at $800^{\circ}C$ was disappeared in part and color of calcined clay changed into reddish yellow by the decomposition of organic matters. 3) More uniform ASc was prepared with clay calcined at $800^{\circ}C\;that\;200^{\circ}C$ however its detergency prepared from clay calcined at $800^{\circ}C$ was poor 4) A significant relationship between the content of inorganic matter in ASc and K/S value was found, however no significant result between the content of protein contaminated and K/S value was observed. 5) Detergency of prepared ASc had a very similar to that of naturally soiled collar cloh.

• 보존과학회지
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• 제28권3호
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• pp.229-233
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• 2012

본 연구에서는 상아 시편에 습식 세척과 약산을 통한 색상 회복 처리를 실시하고, 이에 대한 안정성 평가를 실시하였다. 사용된 상아 시편은 블랙라이트와 능형무늬 분석을 통해 진위여부를 확인하였다. 습식 세척제로는 상아 및 골각류 유물 처리에 주로 사용되는 증류수, 에틸알코올, 아세톤으로 처리하였으며, 세척 결과 표면관찰, 중량 측정, 색도 측정에서 특별한 변화가 관찰되지 않았다. 약산을 통한 색상 회복 실험에서는 UV-A, UV-B, UV-C 세 가지 파장 하에서 1주일간 인공 열화 시킨 시편을 대상으로 약산 용액인 2%와 5%로 희석된 아세트산 용액과 레몬즙을 이용해서 처리하였다. 처리 결과, 모든 시편에서 표면에 균열과 공극이 관찰되었으며, 레몬즙을 사용한 경우 시편의 색이 붉게 변색되어 유물에 적용이 불가능하다고 판단된다.

• 한국수산과학회지
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• 제14권3호
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• pp.158-164
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• 1981

식품 저장용 옹기유의 납 용출양의 변화에 대하여 여러 가지 조건에서 검토한 결과를 요약하면 다음과 같다. 1) 옹기유의 납 용출양은 pH가 낮을수록 용출양이 많았으며, pH4이하에서는 저장기간이 경과함에 따라 기간당용출양도 증가하였으나, pH6 이상에서는 검출되지 않았다. 2) 외관상의 색채로 볼 때 붉고 광택이 있는 것이 검은 것 보다 납이 많이 용출되었으며 이것은 산화납을 사용하여 저온소성한 것으로 추정되었다. 3) 용출온도에 따라 용출양을 비교해 보면 $100^{\circ}C$에서 6시간 정도의 가열로써는 납은 검출되지 않았다. 4) 김치를 포함한 각종 산성 식품을 저장하는 경우 모두 3주 이상 경과하면 납의 용출양이 증가하였다. 5) 시판되고 있는 식기류를 $4\%$(v/v)아세트산용액으로 24시간 실온에서 용출시키면 납은$ND\sim171.1ppb$, 구리 $ND\sim4.71ppb$ 및 카드뮴 $ND\sim5.92ppb$의 범위로 검출되었다.