• Title/Summary/Keyword: 화학사

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Effect of Anesthesia Killing and non-Bleeding on Physicochemical Properties of Plaice, Paralichthys olivaceus Muscle at early Period after Death. (마취사 및 무방혈이 넙치육의 사후조기의 물리${\cdot}$화학적변화에 미치는 영향)

  • CHO Young-Je;CHO Min-Sung;KIM Sang-Moo;CHOI Young-Joon
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.30 no.4
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    • pp.589-594
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    • 1997

  • This study was performed to clarify the effect of anesthesia killing and non-bleeding on the physicochemical and rheological properties of plaice, Paralichthys olivaceus muscle at early period after death. Live plaice was killed by the two different methods: spiking at the brain instantly with bleeding and dipping In seawater containing anesthetic (2,000 ppm ethyl-aminobenzoate) for 10 min without bleeding. These samples were stored at $0^{\circ}C$ and used in checking rigor-mortis, ATP breakdown, the content of ATP and its related compounds, breaking strength, and lactate accumulation through storage. The rigor-mortis, ATP breakdown, and lactate accumulation was faster in samples killed by spiking than in samples killed by anesthesia. ATP in samples killed by anesthetic showed little breakdown until 22.5 hrs, but it was decomposed completely after 30 hrs storage. Breaking strength of samples killed by spiking at the brain instantly with bleeding decreased steadily and showed the maximum value over 10 hrs $(2207.3{\pm}60.2g)$. However, in case of the dipping fresh flesh without bleeding in seawater containing anesthetic, the value and time reached around the maximum breaking strength were $2147.8{\pm}29.0g$ and 13 hrs respectively, but it maintained constantly until 20 hrs passed. From these results, it could be suggested that anesthesia killing and non-bleeding is more effective in maintaining firmness of fresh plaice muscle than spiking killing with bleeding at the early period after death.

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Reviews in Infrared Spectroscopy and Computational Chemistry to Reveal Rhizospheric Interactions among Organic Acids, Oxyanions and Metal oxides: Fundamental Principles and Spectrum Processing (유기산, 산화음이온 및 금속 산화물 간의 근권 내 상호작용 연구를 위한 계산화학과 적외선 분광학에 관한 총설: 기본적인 원리와 스펙트럼 처리)

  • Han, Junho;Ro, Hee-Myong
    • Journal of Korean Society of Environmental Engineers
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    • v.39 no.7
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    • pp.426-439
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    • 2017

  • This review summarizes advantage and limitation in infrared spectroscopy and computational chemistry to understand rhizospheric interaction among organic acids, oxyanions and metal oxides. Since organic acids and metal oxides determine dynamics of oxyanions in the soil environment, knowledge of fundamental mechanisms is a prerequisite for understanding the interactions at soil-water interface. Attenuated total reflectance-fourier transform infrared spectroscopy (ATR-FTIR) is a powerful tool to measure the interfacial reactions. However, the ATR-FTIR measurements are abstruse, because the optical characteristics for measurements are variable depending on the experimental setup. In addition, spectral overlapping is a primary obstacle to the analysis of the interfacial reaction; thus, it is essential to detect and to deconvolute bands for signal interpretation. In this review, we expained the fundamental principle for spectrum processing, and four band identification methods, such as derivative spectroscopy, two-dimension correlation spectroscopy, multivariate curve resolution, and computational chemistry with example of aqueous phosphate speciation. As a result, spectrum processing and computational chemistry improved interpretation and spectral deconvolution of overlapped spectra in relatively simple systems, but it was still unsatisfactory for the problems in more complexed system like nature. Nevertheless, we believed that our challenge would contribute practically to develop adequate analytical procedure, signal processing and protocols that could help to improve interpretation and to understand the interfacial interactions of oxyanions in natural systems.

  • https://doi.org/10.4491/KSEE.2017.39.7.426 인용 KSCI

Owners' assessments of their dog's quality of during palliative chemotherapy for lymphoma (화학요법으로 lymphoma 치료를 받은 애견의 삶의 질에 대한 보호자들의 평가)

  • MELLANBY R.J.;HERRTAGE M.E.;DOBSON J.M.
    • Journal of the korean veterinary medical association
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    • v.39 no.6
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    • pp.517-522
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    • 2003

  • Multicentric lymphoma에 걸쳐 화학요법치료를 받은 25case의 보호자들에게 그들 애견의 삶의 질의 평가를 조사했다. 이에 보호자들은 자기 애견의 삶의 질에 대한 68$\%$의 보호자가 lymphoma가 발생하기 전과 같이 좋았다고 이야기했고 나머지 32$\%$의 보호자들은 발병하기 전보다 더 좋진 않지만 만족한다는 답을 얻었다. 합병증은 52$\%$의 애견에서 발생되었다고 한다. 92$\%$의 보호자들은 그들 애견의 화학요법 치료선택에 대해서 후회가 없다고 했다. 이 결과는 화학요법 치료가 합병증을 유발함에도 불구하고 많은 보호자들이 그들 애견이 화학요법 치료를 받음으로써 그들 애견의 삶의 질이 좋았다고 생각한다는 것이다.

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Evaluation of Textile Images by Multidimensional Scaling Method (다차원 척도법을 이용한 의류소재 이미지의 평가)

  • 이정순;신혜원
    • Proceedings of the Korean Society for Emotion and Sensibility Conference
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    • 2002.05a
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    • pp.295-299
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    • 2002

  • 본 연구에서는 피륙의 물리화학적 특성에 의해 결정되는 촉감, 태 이외에도 색채, 무의 등 여러 요소들의 영향을 받아 복합적으로 표현되는 의류소재의 총체적인 개념인 의류소재 이미지는 어떤 것들이 있으며 이러한 이미지들은 어떻게 분류될 수 있는지를 알아보기 위하여 의류소재 이미지의 평가를 위한 축을 개발해 보았다. 1995년부터 2000년까지의 Texjournal과 인터패션플래닝에서 발간되는 98/99FW부터 0255까지 트렌드 북에서 소재를 설명하는 형용사를 조사하여 유사한 형용사를 통합 처리하여 87개의 형용사를 최종 추출하여 형용사쌍을 만들고 소재 자극 없이 형용사쌍이 주는 소재이미지만을 가지고 쌍비교법을 통해 유사성을 7점 척도로 표시하도록 하였다. 얻어진 결과를 다차원척도법을 이용하여 분석하여 87개의 형용사의 평가차원을 살펴보았다. 의류소재 이미지를 평가하는 축을 다차원 척도법을 이용하여 개발한 결과 '남성적-여성적', '새로운-낡은 듯한', '캐주얼-클래식', '모호한-정돈된'의 4가지 차원의 8개축이 개발되었다.

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