• Title/Summary/Keyword: color sensitivity

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Chemical Mutagenesis of Ulva Pertusa Kjellman by Ethylmethanesulphonate (Ethylmethanesulphonate에 의한 구멍갈파래(Ulva Pertusa Kjellman)의 돌연변이유기)

  • SONG Sang-Ho;KOH Nam-Pyo;CHUNG Gyu-Hwa
    • Journal of Aquaculture
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    • v.4 no.1
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    • pp.67-71
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    • 1991
  • Sensitivity to ethylmethanesulphonate(EMS) on Ulva Pertusa Kjellman thalli was investigated as preliminary studies aimed at mutation breeding of seaweeds. When the thalli were grown in medium containing the mutagen no growth and about $20{\%}$ growth inhibition occurred at $0.05{\%}$ and $0.025{\%}$ EMS-mixed medium respectively. In the case the thalli were treated short time at high concentration mutagen solution followed by culture in control medium no growth and about $10{\%}$ growth inhibition occurred at 40 min. in $1.0{\%}$ and 80 min. in $0.5{\%}$ EMS solution respectively. Among the mutagenized tissues, some showed variation in growth from and cell color contrast to the mother tissue. The mutagenized tissue polypeptide pattern using sodium dodecyl sulphate-polyacrylamide gel electrophoresis was simiiar that of the mother tissue except about 6.6 kD polypeptides.

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A Literature Review for an Emotion Evaluation Protocols Based on Skin Temperature for Home Appliances (피부온을 기반으로 한 가전제품의 감성 평가 프로토콜 수립을 위한 문헌 조사)

  • Jeon, Eun-Jin;Lee, Seung-hoon;Kim, Hee-Eun;You, Hee-Cheon
    • Fashion & Textile Research Journal
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    • v.22 no.2
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    • pp.240-249
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    • 2020
  • This study reviews studies that used skin temperature in order to establish an emotion evaluation protocol based on skin temperature for home appliances. A survey of skin temperature evaluation papers was conducted by the following five stages: (1) keyword search, (2) title screening, (3) abstract screening, (4) full paper screening, and (5) relevance evaluation. Selected papers were reviewed for: purpose, recruitment criteria of participants, the number of participants, apparatus, procedure, measures, analysis methods, and major findings. Thermistor sensors and thermography are used for the measurement of skin temperature. Skin temperature sensors are attached to 4 - 10 locations on the body and their mean of skin temperature is calculated by Ramanatan's 4-point or Hardy & Dubois's 7-point method. Semantic differential (SD) method and thermography measuring facial surface temperature have been used for emotion evaluation. The SD method provides a set of adjective pairs related to a product and evaluates changes in emotion from the use of the product. The range of facial surface analyzed is defined in the thermal image and temperature changes before and after the evaluation are analyzed. The evaluation items of home appliances include form, color, material, aesthetics, satisfaction, novelty, convenience, pleasantness, and excellence. Many existing emotion studies using skin temperature do not apply physiological and psychological methods. This study provides basic data to establish a skin temperature and emotion evaluation protocol by examining literature for skin temperature and evaluation of sensitivity.

Histopathological Observations of the Natural Case and Experimental Occurence of Perirenal Edema in Pig (돼지의 Perirenal Edema의 자연발생예(自然發生例)와 실험적발생예(實驗的發生例)의 병리학적소견(病理學的所見))

  • Cho, Sung-whan;Lee, Cha-soo
    • Korean Journal of Veterinary Research
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    • v.24 no.2
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    • pp.173-181
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    • 1984
  • This paper dealt with the histopathological observations of the perirenal edema in pigs and rabbits administered with Amaranthus retroflexus, based on the clinical and pathological observations of the porcine perirenal edema naturally occurred in Korea. The results observed are summarized as follows; In the natural case, clinical signs were trembling, weakness and incoordination of the hindquarters, followed by sternal recumbency, coma and death. Death usually occurred within 24 hours after the signs of illness appeared. In gross findings, the grayish yellow fluid in the perirenal area was observed in each case. In some cases, the amount of fluid in the thoracic and abdominal cavities was increased and the yellowish red color of the hydrothorax and ascites was seen. When the renal capsule was incised, the kidneys were enlarged and congested and petechiae on the cortical surface and blood clots on the capsule appeared. In microscopical findings, there were cloudy swelling, hyaline droplets and necrosis of the convoluted tubules containing proteinaceous casts and a few oxalate crystals. In addition, interstitial and perivascular edema, distention of the Bowman's space and the convluted tubules and hemorrhages were recognized. In the weanling pigs and the adult pig fed various weeds, including Amaranthus retroflexus, Euxolus blitum and Portulaca oleracea, the pigs fed Amaranthus retroflexus appeared clinical signs and pathological findings of perirenal edema usually seen in the pigs of natural cases. In the pigs fed Euxolus blitum or fed Portulaca oleracea, neither clinical signs nor pathological changes were seen. It was regarded that this disease was affected with Amaranthus retroflexus, but there was no sensitivity in the adult pigs.

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Investigation of Degradation Mechanism of Rabeprazole with Solid State Pharmaceutical Excipients

  • Ren, Shan;Tran, Thao Truong-Dinh;Tran, Phuong Ha-Lien;Rhee, Yun-Seok;Lee, Beom-Jin
    • Journal of Pharmaceutical Investigation
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    • v.40 no.6
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    • pp.367-372
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    • 2010
  • Rabeprazole sodium (RPN) is known to be very unstable at acidic condition or some acidic pharmaceutical excipients such as acrylic acid polymer (carbomer 934) with carboxylic acids. Thus, degradation mechanism of binary blends of rabeprazole with pharmaceutical excipients in a solid state without using solvents at three different ratios (3:1, 1:1 and 1:3) was investigated using Fourier transform infrad (FTIR) spectroscopy. Alkalizer (MgO), neutral hydroxypropymethylcellulose (HPMC 4000) were also tested for comparison. The binary blends were stored under accelerated conditions ($40^{\circ}C$/75% relative humidity) for two weeks. The concentration of thioether rabeprazole from the binary blends with acidic carbomer 934 increased as the rabeprazole concentration decreased. In addition, the degradation half-life of rabeprazole as well as the relative peak area ratios obtained from FTIR spectra of S=O stretching at $1094.1\;cm^{-1}$ decreased consistently as the fraction of carbomer 934 increased due to its sensitivity between the basic benzimidazole nitrogen and carboxylic acid group of carbomer 934. The physical appearance also turned into strong brown color in the presence of carbomer 934. In contrast, there were no significant changes in the degradation kinetics of rabeprazole with MgO and HPMC 4000 in a solid state. This present study demonstrated that the solid-state compatibility test with the aid of HPLC chromatographic and FTIR spectral analyses could offer a valuable methodology to select suitable pharmaceutical excipients and to elucidate the degradation mechanism of RPN for drug formulations at the early formulation stages.

Systematic review on urination and defecation-related pathophysiological symptoms of each Sasang types (사상 체질별 대소변 소증에 대한 체계적 고찰 연구)

  • PARK, Yu-Gyeong;HAN, Sang Yun;CHAE, Han;BAE, Nayoung
    • Journal of Sasang Constitutional Medicine
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    • v.30 no.3
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    • pp.24-39
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    • 2018
  • Introduction The purpose of this study was to systematically review previous studies on Sasang type-specific pathophysiological symptoms in urination and defecation. Methods Peer-reviewed articles on type-specific pathophysiological symptoms of urination and defecation published until September 2016 were extracted from domestic and international six databases. Clinical characteristics from thirteen extracted articles were categorized into three urination domains of appearance of urine, capacity of bladder and urinary discomfort, and three defecation domains of irritability of bowel movement, functional constipation and discomfort from irregularity. Results As for the urination, Tae-Eum type showed dark color with foam, however So-Eum type had frequent urination and sensitivity to dysuria but no nocturia and residual urine sense. As for the defecation, So-Yang type showed frequent urgency and constipation, however So-Eum type reported loose stool. So-Yang type showed varied level of health status depending on defecation irregularity. There were disparities with rectal tenesmus among Sasang types. Discussion Six domains of urination and defecation related type-specific pathophysiological clinical symptoms were provided in this study. This study would contribute to the standardized clinical measures of Sasang typology in the near future.

A Visual Expression in Fashion Illustration using 2D Graphics (2D 그래픽스를 활용한 패션 일러스트레이션의 시각적 표현 양상)

  • Choi Jung-Hwa
    • The Research Journal of the Costume Culture
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    • v.13 no.4 s.57
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    • pp.550-563
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    • 2005
  • These days, photoshop and illustrator program can make a fashion illustration express easily and speedily, And they can also express a feeling and sensitivity of fashion illustrator by a tool and effect more than a manual work's media. The purpose of this study was to analyze a visual expression and characteristics in fashion illustration using 2D graphics. The method of this study was to analyze the fashion illustration books using 2D graphics. The visual expressions in fashion illustration using 2D graphics were as follows: Fashion illustration was based on a sketch or photography, and used a composition, drawing, mapping, painting, and manual work's re-touching. Characteristics of visual expression were as follows: First, a image composition was showed discontinuity and heterogeneity of image, new context and composition, and allowance of reality. Second, image transform was showed image overlap, body transformation by image recomposition, and deformed transformation by vector drawing. Third, hyper-real was showed precise touching, mechanical and neutral image, omission of background and focus of an object's characteristic and information. Fourth, following a realistic expression was showed simplified color, shading, dominant view point of fashion illustrator by omission, and daily lift style. Fifth, following a pictorial expression was showed non-fixed and irregular line, natural painting, and drawing and painting by conventional pictorial media. In conclusion, a photoshop and illustrator in 2D graphics will serve as a new media far fashion illustration with a manual work. And they will not only intensify a capacity as a commercial role of fashion illustration but also present a positive motive for students learning a fashion illustration.

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GC/MS and its applications for the analysis of cosmetic produtcts (GC/MS와 화장품 분석의 응용)

  • 노경원
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.19 no.1
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    • pp.1-19
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    • 1993
  • Gas chromatography serves to separate the mixtures into its components, and mass spectrometer is used to analyzing of unknown compounds. But there are many problems the identification of horn compounds using by GC only. As this reason GC/MS a very powerful analyzing technique. Mass spectrometer consists of 1) inlet stem 2) ion source 3) Bass filter 4) detectors and 5) data system. There are two analyzing modes in the GC/MS, those are scan and SIM(selected ion mom toping) modes. Scan mode is used when analyzing unknown compounds and SIM mode al lows the mass spectrometer to detect specific compound with very high sensitivity. As GC/MS applications for the analysis of cosmetic products, volatile compounds in lotion, earn foundation and hair color, and carbon distribution of fatty acids in soap were performed. Also as a new sample pre-treatment technique, head space sampler/GC/MS introduced in order to analyze the volatile compounds in a toothpaste.

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Development of Estimation Methods of Skin Oxidation and Evaluation of Anti-Oxidative Effects of Genistein in Topical Formulations

  • Kim, Seong-Yeon;Na, Yeon-Joo;Kim, Dong-Ju;Kim, Yeong-Seok;Kim, Hyeong-Min;Hwang, Sung-Ha;Kwak, Ji-Yeon;Kuh, Hyo-Jeong;Lee, Jae-Hwi
    • The Korean Journal of Physiology and Pharmacology
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    • v.16 no.3
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    • pp.205-209
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    • 2012
  • The objective of the present study was to establish the method of measurement of hydrogen peroxide and to estimate the anti-oxidative effect of genistein in the skin. UVB induced skin oxidation and anti-oxidative effect of genistein formulations were evaluated by determining levels of hydrogen peroxide. The mechanism involved in the determination of hydrogen peroxide is based on a color reaction between ferric ion ($Fe^{3+}$) and xylenol orange, often called FOX assay and subsequent monitoring of absorbance values of the reactant at 540 nm. The reaction was to some extent pH-dependent and detection sensitivity was greatest at pH 1.75. Genistein liposomal gel demonstrated better anti-oxidative effect with regard to lowering hydrogen peroxide levels elevated by UVB irradiation compared to genistein-suspended gel. A linear relationship has been observed between anti-oxidative effect of genistein and drug deposition in the skin tissue. Genistein liposomal gel resulting in the localization of the drug in the deeper skin led to improved anti-oxidative effect compared to genistein gel. The suggested method for evaluation of oxidation of the skin can be used as a tool to screen effective anti-oxidative agents and their delivery systems acting on the skin.

Proposal on the Severity Scoring System of Rhinitis ; Comparison, Analysis and Establishment (비염의 평가 방법에 대한 제언 ; 비교 분석 및 설립)

  • Hwang Sun-Yi;Hwang Min-Bo;Lim Jin-Ho;Jee Seon-Young;Kim Sang-Chan;Baek Jung-Han;Lee Sang-Gon
    • Journal of Physiology & Pathology in Korean Medicine
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    • v.20 no.1
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    • pp.235-244
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    • 2006
  • There is much confusion in the field of Rhinitis regarding how to best measure disease severity objectively, Therefore, we aimed to establish a new adequate scoring system for Rhinitis, that should be based on comparison analysis of various scoring systems. We report as follows. We researched for data relating to severity scoring systems for rhinitis in Entrez PubMed from 1995 to 2005 and in Kiss Kstudy. Results and Conclusions: Properties of severity scoring systems were validity, sensitivity of change and ease of use. The essential items of severity scoring systems were subjective symptoms. The criterion of severity were divided into subjective symptoms and complication and Quality of Life. Intensity items are nasal obstruction, rhinorrhea, sneezing, itching, Postnasal drip, nasal mucosa swelling, nasal mucosa color, complication. Subjective symptoms is difficulty of Life. The significant items of severity scoring system are nasal symptoms. The whole score does with the maximum 30 scores. As it were, we assumed nasal symptoms accounted for around 80% of each total score, with complication and difficulty of Life representing 20%.

Development of PKNU3: A small-format, multi-spectral, aerial photographic system

  • Lee Eun-Khung;Choi Chul-Uong;Suh Yong-Cheol
    • Korean Journal of Remote Sensing
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    • v.20 no.5
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    • pp.337-351
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    • 2004
  • Our laboratory originally developed the compact, multi-spectral, automatic aerial photographic system PKNU3 to allow greater flexibility in geological and environmental data collection. We are currently developing the PKNU3 system, which consists of a color-infrared spectral camera capable of simultaneous photography in the visible and near-infrared bands; a thermal infrared camera; two computers, each with an 80-gigabyte memory capacity for storing images; an MPEG board that can compress and transfer data to the computers in real-time; and the capability of using a helicopter platform. Before actual aerial photographic testing of the PKNU3, we experimented with each sensor. We analyzed the lens distortion, the sensitivity of the CCD in each band, and the thermal response of the thermal infrared sensor before the aerial photographing. As of September 2004, the PKNU3 development schedule has reached the second phase of testing. As the result of two aerial photographic tests, R, G, B and IR images were taken simultaneously; and images with an overlap rate of 70% using the automatic 1-s interval data recording time could be obtained by PKNU3. Further study is warranted to enhance the system with the addition of gyroscopic and IMU units. We evaluated the PKNU 3 system as a method of environmental remote sensing by comparing each chlorophyll image derived from PKNU 3 photographs. This appraisement was backed up with existing study that resulted in a modest improvement in the linear fit between the measures of chlorophyll and the RVI, NDVI and SAVI images stem from photographs taken by Duncantech MS 3100 which has same spectral configuration with MS 4000 used in PKNU3 system.