• 제목/요약/키워드: Olfactory Sensitivity

검색결과 10건 처리시간 0.018초

사출성형 공정에서 유발되는 냄새의 후각 감성 특성 (Olfactory Sensitivity Characteristics of Odors from Injection Molding Processing)

  • 류영재;김보성;이예현;곽승현;서상혁;류태범;민병찬
    • 산업경영시스템학회지
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    • 제39권4호
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    • pp.67-71
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    • 2016
  • The purpose of this study was to explore olfactory sensitivity of odors from injection molding processing. To do this, the experiment was carried out in an injection molding factory, and participants were exposed to the environment where odor-substances (Formaldehyde, Benzene, Toluene, Ethylbenzene, Xylene, Styrene) exist. In addition, we used the subjective scale using semantic adjectives as an olfactory sensitivity. As a result, the assessment structure of olfactory sensitivity was composed of eight factors (irritant, thermal, tense, unique, like-dislike, active, stable, masculine), and the main factor which was irritant characteristics explained 20% of the total olfactory sensibility. These results suggested that odors from injection molding processing would cause more negative emotional responses than the flavor which is mainly used in olfactory sensitivity. This study, as a basic study of the improvement in a factory environment for the efficiency of work, has limits in that it was conducted to the extent of identifying the olfactory sensitivity structure of those who were at a laboratory and who were exposed to the environment of odor substance induced in the injection molding processing. Therefore, for the method of removing malodorous substance, the effect of materials which can neutralize it, and the comparison of a direct performance in the environment where negative sensitivity structure exists, a series of studies which aim to improve the environment of injection molding factories, such as performance assessment in the environment of a factory and an office need to be conducted. It is expected that when these studies are put together, the improvement guidelines will be provided as a type that can maximize the effectiveness of work in the factory environment where injection molding processing is done.

The Analysis of Sulfur Compounds of Odorous Material in Kunsan Industrial Complex

  • Kim, Seong-Cheon;Kim, Ki-Hyun;Choi, Yeo-Jin
    • 한국환경보건학회:학술대회논문집
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    • 한국환경보건학회 2005년도 국제학술대회
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    • pp.399-405
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    • 2005
  • In this study, we investigated the gas chromatography (GC) and pulsed flame photometric detection (PFPD) system for the analysis of four major reduced S compounds including hydrogen sulfide ($H_2S)$; methyl mercaptan ($CH_3SH$); dimethyl sulfide (DMS); and dimethyl disulfide(DMDS) contained in environmental samples. To analyze these compounds in high concentration range (above ppb level), we developed a high mode analytical setting with the loop-injection system. By contrast, we also established a low mode setting for the analysis of low concentration samples (ppt-level samples from ambient air) by the combination with thermal desorption unit(TDU). Comparative analysis of both settings revealed that relative detection properties of four S compounds are systematic enough. The results of high mode analysis indicated that the patterns were systematic among compounds: H2S exhibited the lowest sensitivity, while DMBS showed the strongest one. The results were also compared in terms of sensitivity reductions for all compounds by dividing slope ratios between low and high mode system. Although low mode system exhibited significant reductions on the order of a few tens times, their detection characteristics were highly consistent as it was shown in the high mode setting. To learn more about absolute and relative relations between two different modes of S analysis, future studies may have to be directed to cover more complicated nature of GC/PFPD performance. Hydrogen sulfide($H_2S$) was over in summer about low level of olfactory sense 410 ppt, Methyl mercaptan(C$H_3SH$) was over in apring and summer about low level of olfactory sense 70, Dimethyl sulfide(DMS) was not over in four season about low level of olfactory sense 2,200 ppt. Carbon disulfide($CS_2$) was not over in four deason about Tow level of olfactory sense 210,000, Dimethyl disulfide(DMDS) was not over in summer about low level of olfactory sense2,000.

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돌마자 Microphysogobio yaluensis(Cypriniformes, Cyprinidae) 후각기관의 구조 및 조직학적 특성 연구 (Structure and Histological Characters of the Olfactory Organ in Korean Endemic Fish, Microphysogobio yaluensis (Cypriniformes, Cyprinidae))

  • 김현태;이용주;김형수;박종영
    • 한국어류학회지
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    • 제30권3호
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    • pp.161-166
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    • 2018
  • 한국 고유종 돌마자 Microphysogobio yaluensis의 후각기관과 서식처 및 생태와의 연관성을 알아보기 위해 실체 현미경과 광학현미경을 이용하여 구조 및 조직학적 특징을 조사하였다. 후각기관은 외부적으로 전비공, 후비공 그리고 비경계판으로 구성되어 있으며, 내부는 22~24개의 후판들과 비선으로 구성되었다. 후판은 감각상피와 비감각상피로 이루어져 있는데, 감각상피는 후감각신경, 지지세포, 기저세포들로 구성되었으며, 비감각상피는 층상상피세포, 비감각섬모세포, 산성과 중성을 갖는 황점액소의 점액세포들로 구성되어 있다. 이러한 후각기관들의 특징들은 돌마자의 높은 후각능력과 의존성 그리고 서식처 환경에 밀접한 관계가 있을 것으로 생각되며 분류학적 연구에도 활용될 수 있을 것으로 생각된다.

화학분석 기반 폭발물 탐지 기술 동향 (Research Trends in Chemical Analysis Based Explosive Detection Techniques)

  • 문상현;이원주;이기영
    • 공업화학
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    • 제33권1호
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    • pp.1-10
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    • 2022
  • 본 논문은 주요 폭발물 탐지 기술에 대한 원리, 장단점 및 향후 필요한 연구 분야에 대한 총설이다. 폭발물 탐지 기술은 분광학적 방법(spectroscopic methods), 감지기 기술(sensor techniques), 후각 감지기(olfactory type sensors)로 분류할 수 있다. 이러한 탐지 기술은 많은 발전이 있었지만 폭발물 탐지를 위한 판별성, 휴대성, 감도에 관한 연구 가능성이 높은 것으로 보인다.

Effects of olfactory self- and cross-adaptation on perceiving odor in a moth

  • Qian, Kai;Chen, Haibin;Wan, Xinlong
    • International Journal of Industrial Entomology and Biomaterials
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    • 제32권2호
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    • pp.60-68
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    • 2016
  • Pheromone orientation in moths is an exemplar of olfactory sensitivity. To avoid cross mating, the responses of males to pheromone blends must be high specificity and temporal resolution. We tested the effects of olfactory self- and cross-adaptation of pheromone compounds and mixtures in Spodoptera litura moths by electroantennogram (EAG) recordings. The challenge of S. litura antennae to a pulse train of its own pheromone blends of Z9,E11-14:OAc and Z9,E12-14:OAc with 200 ms on/off and 1 s on/off indicated that the repetitive stimulation by 200 ms on/off with high dosages resulted in greater adaptation than that by 1 s on/off with low dosages and the adaptation index of Z9,E11-14:OAc in all treatments is significantly larger than that of Z9,E12-14:OAc, suggesting that high dosages with more frequent stimulation prefer to induce sensory adaptations and a different odor coding exist between the two components in the antennal periphery in this moth. The cross-adaptation EAG test among the two pheromone compounds and Z7-12:OAc and Z9-14:OH from congeneric species of S. litura showed that each of these compounds adapted the antenna more to that specific compound. The significantly higher adaptation to Z7-12:OAc and Z9-14:OH than to the pheromone components of S. litura induced by themselves suggested that both of them are coded by specific odor receptor neurons which are different from those tuned to the pheromone components of S. litura . Thus, we proposed that Z7-12:OAc and Z9-14:OH may play an important role in avoidance of heterospecific mating between S. litura and its sympatric moth species.

Correctum : Effects of olfactory self- and cross-adaptation on perceiving odor in a moth

  • Qian, Kai;Chen, Haibin;Wan, Xinlong
    • International Journal of Industrial Entomology and Biomaterials
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    • 제33권2호
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    • pp.149-149
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    • 2016
  • Pheromone orientation in moths is an exemplar of olfactory sensitivity. To avoid cross mating, the responses of males to pheromone blends must be high specificity and temporal resolution. We tested the effects of olfactory self-and cross-adaptation of pheromone compounds and mixtures in Spodoptera litura moths by electroantennogram (EAG) recordings. The challenge of S. litura antennae to a pulse train of its own pheromone blends of Z9,E11-14:OAc and Z9,E12-14:OAc with 200 ms on/off and 1 s on/off indicated that the repetitive stimulation by 200 ms on/off with high dosages resulted in greater adaptation than that by 1 s on/off with low dosages and the adaptation index of Z9,E11-14:OAc in all treatments is significantly larger than that of Z9,E12-14:OAc, suggesting that high dosages with more frequent stimulation prefer to induce sensory adaptations and a different odor coding exist between the two components in the antennal periphery in this moth. The cross-adaptation EAG test among the two pheromone compounds and Z7-12:OAc and Z9-14:OH from congeneric species of S. litura showed that each of these compounds adapted the antenna more to that specific compound. The significantly higher adaptation to Z7-12:OAc and Z9-14:OH than to the pheromone components of S. litura induced by themselves suggested that both of them are coded by specific odor receptor neurons which are different from those tuned to the pheromone components of S. litura. Thus, we proposed that Z7-12:OAc and Z9-14:OH may play an important role in avoidance of heterospecific mating between S. litura and its sympatric moth species.

학령전기 발달장애 아동의 라이프 케어를 위한 감각처리가 수면장애에 미치는 영향에 관한 연구 (A study of the Effect of Sensory Processing on Sleep Disturbance for Life care of Preschool Children with Developmental Disabilities)

  • 김희영
    • 한국엔터테인먼트산업학회논문지
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    • 제13권3호
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    • pp.203-211
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    • 2019
  • 이 연구는 4-7세의 발달장애 아동을 대상으로 하여 감각처리와 수면장애의 관계를 알아보고 감각처리가 수면장애에 미치는 영향을 파악하고자 하였다. 2017년 6월부터 8월까지 발달 클리닉 및 재활병원에 내원하는 전반적 발달장애 아동 110명을 대상으로 하여 최종 101명의 자료를 분석하였다. 감각처리와 수면장애를 평가하기 위해 단축형 감각 프로파일(SSP)과 한국형 아동 수면장애 척도(K-CSHQ)로 자료 조사하였다. 통계분석은 기술분석과 피어슨 상과분석, 다중회귀분석을 사용하였다. 연구결과, 발달장애 아동은 감각처리와 수면장애에 문제를 보이는 경우가 많았다. 감각처리는 수면장애와 관련이 있었으며 수면장애에 대한 감각처리의 최종 영향 요인은 맛/냄새 민감성, 청각필터링과 전반적인 감각처리인 것으로 나타났다. 발달장애 아동의 질 높은 수면을 돕기 위해서는 아동의 감각처리 능력을 중재에 고려할 필요가 있으며 특히 맛/냄새 민감성, 청각 필터링 영역을 중재하는 것이 도움이 될 것이다.

다공성 금속을 이용한 남성 신변장신구 활용 방안 (Porosity the Male Adornments Conjugation Plan which Uses the Metal)

  • 김민호
    • 한국콘텐츠학회논문지
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    • 제9권9호
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    • pp.191-198
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    • 2009
  • 21세기는 기술 발달로 인해 소재의 다양화와 학문적 연계를 통한 디자인 결합은 우리의 삶에 있어 다양한 욕구의 변화를 가져왔으며, 그로인해 시각적인 관심과 함께 기능적 역할의 조화로 자기 개성에 맞는 디자인 개발이 관심의 대상이 되고 있다. 최근 다양한 소재를 이용한 디자인 개발이 추세이고 이러한 디자인 경향은 개인의 감성과 취향을 존중하고 있으며, 이에 따라 다변화 되고 있다. 생활수준의 향상으로 건강과 개성에 대한 관심과 향기에 대한 관심이 높아지고 향(香)은 기억이나 감성 등 개인의 취향과 개성에 맞게 다양한 형태로 개발되고 있다. 이에 본 연구자는 향기 나는 소재를 사용하여 기계적인 특성과 미적 요소를 가미한 소재를 가지고 소비자의 감성적 욕구에 맞게 장신구 분야에 적용하고 시각적 디자인에 후각을 접목하면서 여성의 보조적 디자인에서 벗어나 남성만의 개성과 감성을 표현 할 수 있는 남성 신변장신구에 대한 활용 방안을 제시 하고자 한다.

뇌병변 장애 아동의 아동용 전산화 인지재활 프로그램(CoTras-C) 사용 전·후 비교 (Comparison Before and After the Application of the Computerized Cognitive Rehabilitation Program(CoTras-C) for Children with Cerebral Palsy)

  • 박소원
    • 대한통합의학회지
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    • 제9권3호
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    • pp.9-18
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    • 2021
  • Purpose : In this study, we applied a computerized cognitive rehabilitation program (CoTras-C) for children with cerebral palsy. Research was conducted to investigate the impact of upper limb function, sensory function, and activities of daily living. Methods : The study period lasted 10 weeks from October 2019 to December 2019. The study subjects were 12 subjects according to the selection criteria, and a computerized cognitive rehabilitation program (CoTras-C) was conducted twice a week for 30 minutes before and after the application of basic occupational therapy. Results : As a result of the computerized cognitive rehabilitation program, scores of upper limb function (QUEST), sensory function (SSP-2), and daily life activity (WeeFIM) were significantly improved (p>.05). From the result of examining the motor area, improvement in fine-motor function and protective extension through touch pad or controller operation was found. It also showed improvement in activities of daily living including motor and activities of daily living including social cognition. In the sensory function evaluation, it was not significant in movement sensitivity. Significant differences were shown in the items excluding olfactory/taste sensitivity. Conclusion : The application of the computerized cognitive rehabilitation program (CoTras-C) showed significant results in upper limb function, sensory function, and daily life activities of children with brain lesions. Based on these results, future studies need to generalize the study by expanding the age or population of children with brain lesions, or by expanding the diversity of diseases and environments.

기운(氣韻)의 현대적(現代的) 해석(解析)에 관한 연구(硏究) -기운(氣韻)의 시각화(視覺化)를 중심(中心)으로-

  • 이성영
    • 조형예술학연구
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    • 제10권
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    • pp.111-159
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    • 2006
  • The study is to examine the concept, origin, developmental process, and characteristics of 'Kioonsangdong,' or 'lively energy' to look into whether 'Kioon' maybe interpreted by modern sense and sensitivity and be applied to contemporary creative activities, and to explore whether the ideality of 'Kioon' may be transferred into visualization in pictures. The article defines the scope of 'Ki' as 'Ki(energy)' of artistry and sees the Wei, Chin and the South & North dynasties as its derived point. In Chapter I, before the examination of 'Kioon,' 'the relationship of Ki and Oon,' and 'interrelationship of Kioon (energy) and Sangdong (liveliness) are investigated. It is impossible to define Kioon in a word due to its being abstract. Thus, although it does not seem to be unlimited, focusing on putting a variety of concepts of Kioonsangdong in order, it classifies the subject, from which such Kioon reveals itself, into 'its former self,' things of the object,' 'character,' and 'brush and Chinese ink.' Then, with selected representative works for each category, it examines how Kioonsangdong is reflected in the works. In addition, it comprehensively argues on Kioon through presenting the points of Kioon theories by many an art critic and artist from the Wei, Chin and the South & North dynasties to modem China. In Chapter II, the study analyzes the Kioon-reflected works that have been examined in Chapter 1 in the light of the Kioon theories of 'blanks,' 'styles of brushmanship,' and 'techniques of Chinese ink,' and by selecting and analyzing representative artists and works in each era, it investigates how Kioon had been transformed as times had changed. In Chapter III, which is the core of the study, is on contemporary interpretations of Kioon. I intend to interpret Kioon as scent. In other words, through replacing abstract Kioon with the olfactory sense, actually realizing and forming it, and then visualizing it onto my own work, I attempt to grope for contemporary interpretations of Kioon. That is to say, I explain how Kioon is transformed into scent on the grounds that the origins of Kioon may be detected in literature and aesthetics. Besides, the study looks into the process that 'the scent of the olfactory sense' turns into 'the scent of art,' which I assert by contemporary interpretations, and shows in details that it may be visualized in pictures presenting quotes. In Chapter IV, it analyzes Kioonsangdong expressed visually as the scent of art in my own work in terms of the three techniques of blanks, brushmanship, and Chinese ink.

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