• 제목/요약/키워드: Functional Division

검색결과 2,496건 처리시간 0.028초

확률집합의 구간치 용적 범함수에 대한 쇼케이 약 수렴성에 관한 연구 (Choquet weak convergence for interval-valued capacity functionals of random sets)

  • 장이채;김태균;김영희
    • 한국지능시스템학회논문지
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    • 제18권6호
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    • pp.837-841
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    • 2008
  • In this paper, we consider interval probability as a unifying concept for uncertainty and Choquet integrals with resect to a capacity functional. By using interval probability, we will define an interval-valued capacity functional and Choquet integral with respect to an interval-valued capacity functional. Furthermore, we investigate Choquet weak convergence of interval-valued capacity functionals of random sets.

목격 여부에 따른 배가쪽 이마앞 영역의 활성화 차이: Functional Near-Infrared Spectroscopy Study 연구 (Increased Ventrolateral Prefrontal Cortex Activation during Accurate Eyewitness Memory Retrieval: An Exploratory Functional Near-Infrared Spectroscopy Study)

  • 함근수;김기평;정호진;유성호
    • The Korean Journal of Legal Medicine
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    • 제42권4호
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    • pp.146-152
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    • 2018
  • We investigated the neural correlates of accurate eyewitness memory retrieval using functional near-infrared spectroscopy. We analyzed oxygenated hemoglobin ($HbO_2$) concentration in the prefrontal cortex during eyewitness memory retrieval task and examined regional $HbO_2$ differences between observed objects (target) and unobserved objects (lure). We found that target objects elicited increased activation in the bilateral ventrolateral prefrontal cortex, which is known for monitoring retrieval processing via bottom-up attentional processing. Our results suggest bottom-up attentional mechanisms could be different during accurate eyewitness memory retrieval. These findings indicate that investigating retrieval mechanisms using functional near-infrared spectroscopy might be useful for establishing an accurate eyewitness recognition model.

COVID-19 팬데믹과 식품의 면역조절 기능 (COVID-19 pandemic and the immune regulatory function of foods)

  • 김근동;이소영;신희순
    • 식품과학과 산업
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    • 제55권3호
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    • pp.244-263
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    • 2022
  • Coronavirus, known as one of the causes of colds including mild upper respiratory tract disease in humans, has mutated into the infectious severe disease, COVID-19 through SARS and MERS. The mortality and symptoms of COVID-19 are related to the ability to regulate innate immunity, which acts as the first barrier against microorganisms and viruses. During the COVID-19 pandemic, the demand for food that helps to strengthen immunity is rapidly increasing. Functional foods promote general health and alleviate the risk of disease symptoms by activating multiple biological functions. A recent, there is an interest in discovering functional substances that can induce enhancement of immunity and prevent viral infection as well as relieve disease symptoms. Therefore, this article focus to understand the concept of immune response and highlights the recent status of functional foods and research trends that can help prevent and treat viral infections by inducing the enhancement of immune function.

벼 microarray를 이용한 유전자발현 profiling 연구동향 (Current status on expression profiling using rice microarray)

  • 윤웅한;김연기;김창국;한장호;이태호;김동헌;이강섭;박수철;남백희
    • Journal of Plant Biotechnology
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    • 제37권2호
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    • pp.144-152
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    • 2010
  • As the International Rice Genome Sequencing Project (IRGSP) was completed in 2005 and opened to the public, many countries are making a lot of investments in researches on the utilization of sequence information along with system development. Also, the necessity of the functional genomics researches using microarray is increased currently to secure unique genes related with major agricultural traits and analyze metabolic pathways. Microrarray enables efficient analysis of large scale gene expression and related transcription regulation. This review aims to introduce available microarrays made based on rice genome information and current status of gene expression analysis using these microarrays integrated with the databases available to the public. Also, we introduce the researches on the large scale functional analysis of genes related with useful traits and genetic networks. Understanding of the mechanism related with mutual interaction between proteins with co-expression among rice genes can be utilized in the researches for improving major agricultural traits. The direct and indirect interactions of various genes would provide new functionality of rice. The recent results of the various expression profiling analysis in rice will promote functional genomic researches in plants including rice and provide the scientists involved in applications researches with wide variety of expression informations.

Capsule Endoscopy in Refractory Diarrhea-Predominant Irritable Bowel Syndrome and Functional Abdominal Pain

  • Valero, Manuel;Bravo-Velez, Gladys;Oleas, Roberto;Puga-Tejada, Miguel;Soria-Alcivar, Miguel;Escobar, Haydee Alvarado;Baquerizo-Burgos, Jorge;Pitanga-Lukashok, Hannah;Robles-Medranda, Carlos
    • Clinical Endoscopy
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    • 제51권6호
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    • pp.570-575
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    • 2018
  • Background/Aims: Capsule endoscopy is a diagnostic method for evaluating the small bowel lumen and can detect undiagnosed lesions. The aim of this study was to evaluate the diagnostic yield and clinical impact of capsule endoscopy in patients with refractory diarrhea-predominant irritable bowel syndrome and functional abdominal pain. Methods: This study involved a retrospective analysis of prospectively collected data, maintained in a database. Patients with refractory diarrhea-predominant irritable bowel syndrome and functional abdominal pain within the period of March 2012 to March 2014 were included. Capsule endoscopy was used to detect small bowel pathologies in both groups. Results: Sixty-five patients (53.8% female) fulfilled the inclusion criteria and had a mean (${\pm}$standard deviation) age of $50.9{\pm}15.9$ years. Clinically significant lesions were detected via capsule endoscopy in 32.5% of the patients in the abdominal pain group and 54.5% of the patients in the diarrhea group. Overall, 48% of patients had small bowel pathologies detected during the capsule endoscopy study. Inflammatory lesions and villous atrophy were the most frequent lesions identified in 16.9% and 15.3% of patients in the abdominal pain and the diarrhea groups, respectively. Conclusions: Routine use of capsule endoscopy in patients with irritable bowel syndrome should not be recommended. However, in patients with refractory conditions, capsule endoscopy may identify abnormalities.

Industry and Consumers Awareness for Effective Management of Functional Animal-based Foods in South Korea

  • Wi, Seo-Hyun;Park, Jung-Min;Wee, Sung-Hwan;Park, Jae-Woo;Kim, Jin-Man
    • Preventive Nutrition and Food Science
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    • 제18권4호
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    • pp.242-248
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    • 2013
  • In recent years, manufacturers of animal-based foods with health claims have encountered difficulties in the labeling of their products because of a lack of regulation on defining the functionality of animal-based foods. Therefore, this study was conducted to establish the basic requirements for the development of a definition for functional animal-based foods by investigating consumer and industry awareness. Survey data were collected from 114 industry representatives and 1,100 consumers. The questions of the survey included items on production status and future production plans, functionality labeling, promotion plans, establishment of definition, the role of the government, consumer perception, and selection of products. The results show that both industry representatives and consumers believe that legislation and the provision of scientific evidence should be improved for the development of a functional animal-based foods market. The results obtained from this study will contribute to consumer trust by supplying correct information and can be utilized in the industry as basic data for the development of functional animal-based food products.

참취 추출물과 용매분획물의 항산화 활성 (Antioxidant Activity of Extracts and Fractions from Aster scaber)

  • 전상민;이진영;김헌웅;이영민;장환희;황경아;김행란;박동식
    • 한국식품영양과학회지
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    • 제41권9호
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    • pp.1197-1204
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    • 2012
  • 본 연구는 참취 에탄올 추출물과 용매분획물의 항산화 활성과 총 폴리페놀 함량 및 총 플라보노이드 함량을 측정하고, 생리활성과 항산화 성분 간의 상관관계를 비교 분석하였다. 총 폴리페놀 함량은 70% 에탄올 추출물 99.6 mg GAE eq/g으로 나타났으며, ethyl acetate 분획물 141.9 mg GAE eq/g으로 다른 분획물보다 높은 함량을 나타내었다(p<0.05). 또한 총 플라보노이드 함량도 ethyl acetate 분획물에서 105.6 mg QUE eq/g으로 높은 함량을 나타내었다(p<0.05). DPPH 라디칼 소거능과 ABTS 라디칼 소거능의 경우 ethyl acetate 분획물 1,000 ${\mu}g/mL$ 농도에서 97.1% 및 98.7%를 보여 대조군인 ascorbic acid, ${\alpha}$-tocopherol 및 BHT와 유사한 소거능을 나타내었다(p<0.05). SOD 유사활성은 ethyl acetate 분획물 1,000 ${\mu}g/mL$ 농도에서 42.8%의 활성을 나타내어 DPPH, ABTS 라디칼 소거능보다 비교적 낮은 활성을 나타내었다(p<0.05). FRAP에 의한 환원력 측정 결과에서도 ethyl acetate 분획물에서 높은 활성을 나타내었다(p<0.05). 그러나 $Fe^{2+}$ chelating 활성 측정은 chloroform 분획물 1,000 ${\mu}g/mL$ 농도에서 81.8%로 높게 나타났으며, 오히려 ethyl acetate 분획물에서는 6.2%로 가장 낮게 나타났다(p<0.05). 이상의 결과 참취 70% 에탄올 추출물과 용매 분획물 중 ethyl acetate 분획물이 다량의 폴리페놀과 플라보노이드를 함유하고 있으며, 항산화 효과가 높게 나타났다. 따라서 참취는 천연 항산화 소재 및 기능성식품으로의 활용 가능한 약용 식물자원인 것으로 판단된다.