• 제목/요약/키워드: whole

검색결과 21,915건 처리시간 0.044초

인체 진동모델의 진동 전달특성에 관한 조사 (Survey on the Vibration Transfer Characteristics of thw Whole-Body Vibration Models)

  • 우춘규;정완섭;김수현;곽윤근
    • 소음진동
    • /
    • 제6권5호
    • /
    • pp.625-633
    • /
    • 1996
  • This paper addresses a systematic way of understanding the transfer characteristics of whole-body vibration due to the external excitation. Amirouche's and Tamaoki's models are considered, whose analysis shows a new result that resonant frequencies related to the head vibration are well coincided with those of the body. This point reveals that the improvement of the ride quality of passenger cars can be achieved by isolating only external vibration components transfered to the body. Finally, this paper points out the limitation of previous whole-body vibration models, which gives the motivations of setting up more 'practical and generalized' whole-body vibration models of interest in this study.

  • PDF

황기의 혈압강하 작용에 관한 연구 (A Study on the Hypotensive Action of Astragali Radix Water Extract in the Rabbit)

  • 임동윤
    • 약학회지
    • /
    • 제23권2호
    • /
    • pp.69-80
    • /
    • 1979
  • Effects of Astragali Radix Water Extract (ARWE) on the blood pressure were investigated in the whole rabbit and the spinalized rabbit. ARWE, when administered into the ear-vein or lateral ventricle, produced a fall in the blood pressure in the whole rabbit, but intravenous ARWE in the spinalized rabbit did not elicite the hypotensive action. Pretreatments with chlorisondamine, guanethidine, phentolamine and cyproheptadine in the whole rabbit weakened the depressor action of ARWE. The hypotensive action of the whole rabbit to ARWE was not influenced by the pretreatment of the animals with diphennylhydramine, propranolol, and vagotomization, whereas inhibited by atropine. ARWE did not affect the pressor response by angiotensin. However, it enhanced the hypertensive action by norepineprine and reduced the elevation in the blood pressure by carotid occlusion in the whole rabbit. These experimental observations suggest that ARWE may cause the depressor response via mechanisms of the central sympathetic blocking action, cholinergic action by peripheral origin and serotonin-like action.

  • PDF

Whole Life Performance Bid Evaluation in the Korean Public Sector

  • Park, Kenneth Sungho;Lim, Hyoung-Chul
    • 한국건축시공학회지
    • /
    • 제12권6호
    • /
    • pp.682-700
    • /
    • 2012
  • Over the last several years, Korea has increasingly adopted design-build for public construction projects. There is a much greater awareness of the need to change to a system based on 'Value for Money', which is high on the government's agenda. A whole life performance bid evaluation model is proposed to aid decision makers in the selection of a design-builder. This is based on the integration of a framework using an analytic hierarchy process, as the bid awarding system is being changed from one based on the lowest price to one based on best value over the life-cycle. Key criteria such as whole life cost, service life planning and design quality are important through the key stages of the evaluation process. The model uses a systematic and holistic approach, which enables the public sector client to make better decisions in design-builder selection, which will deliver whole life benefits based on long-term cost-effectiveness.

뽕나무자원의 새로운 한지제조 특성 (A New Hanji Manufacturing from Morus Resources)

  • 이일로;최태호;조남석
    • 펄프종이기술
    • /
    • 제38권3호
    • /
    • pp.38-46
    • /
    • 2006
  • This study was carried out to investigate the sheet properties of Morus Hanji, made by different pulping methods, such as alkali, alkali-peroxide and sulfomethylated pulping, and different stocks composed to bast and whole stalk fibers. Two species of Morus, M. alba and M. lhou, were used. Pulp yield of the whole stalk parts, its brightness and opacity were higher than those of bast part. In particular sulfomethylated pulp has higher brightness of $62{\sim}63%$, than other pulps(average brightness $30{\sim}40%$). In mechanical properties, paper made of bast fiber has higher strength than those of the whole stalks. Hanji made from M. lhou, whole stalk, and sulfomethylated pulp gave better sheet formation and higher strength than those of the others. Hanji from M. alba bast fiber and whole stalk pulps were not so good sheet properties.

공동주택 리모델링을 위한 수익모델의 기능성 평가 연구 (A Study on Functionality Evaluation of Profit Model for Remodeling of Apartment House)

  • 안민재;표지명;김의식
    • 한국건축시공학회지
    • /
    • 제5권2호
    • /
    • pp.107-113
    • /
    • 2005
  • This study analyzes remaining repair rate and applied repair rate with the presentation of profit model for the purpose of pursuing maximization of added value through remodeling of apartment house. Objects of remodeling and item applying the whole replacement of functionality evaluation items include exterior of building (3 items maintaining the current conditions, 8 items requiring the whole replacement), water supply/sanitary/gas/ventilation facilities (6 items maintaining the current conditions, 6 items requiring the whole replacement, electric/fire fighting/elevator facilities (8 items maintaining the current conditions, 20 items requiring the whole replacement) and heating/water heater facilities (2 items requiring the whole replacement).

Investigations on Genetic Architecture of Hairy Loci in Dairy Cattle by Using Single and Whole Genome Regression Approaches

  • Karacaoren, B.
    • Asian-Australasian Journal of Animal Sciences
    • /
    • 제29권7호
    • /
    • pp.938-943
    • /
    • 2016
  • Development of body hair is an important physiological and cellular process that leads to better adaption in tropical environments for dairy cattle. Various studies suggested a major gene and, more recently, associated genes for hairy locus in dairy cattle. Main aim of this study was to i) employ a variant of the discordant sib pair model, in which half sibs from the same sires are randomly sampled using their affection statues, ii) use various single marker regression approaches, and iii) use whole genome regression approaches to dissect genetic architecture of the hairy gene in the cattle. Whole and single genome regression approaches detected strong genomic signals from Chromosome 23. Although there is a major gene effect on hairy phenotype sourced from chromosome 23: whole genome regression approach also suggested polygenic component related with other parts of the genome. Such a result could not be obtained by any of the single marker approaches.

목통(木通) Ethanol Extract의 혈압강하작용(血壓降下作用)에 관(關)한 연구(硏究) (A Study on the Hypotensive Action of Akebiae Lignum Ethanol Extract in Rabbits)

  • 강호연
    • Journal of Pharmaceutical Investigation
    • /
    • 제9권2호
    • /
    • pp.22-30
    • /
    • 1979
  • Effects of Akebiae Lignum, whose scientific name is Akebia quinata Decaisne, on the blood pressure were investigated with EtOH extract in whole and spinal rabbits. Akebia Lignum EtOH extract (AEE), when given intravenously, produced a fall in blood pressure not only in whole rabbit but also in spinal rabbit and AEE administered into a lateral cerebral ventricle of whole rabbit did not elicit a fall in blood pressure. The depressor responses of the whole rabbit to intravenous AEE were weakened by treatment of the animals with atropine and chlorisondamine but not by vagotominijation, phentolamine avil, and then the depressor action causing by AEE in the whole rabbit was not affected by pretreatment of physostigmine which is cholinesterase inhibitor and of hemicholinium which blocks acetylcholine synthesis by interfering with choline uptake in nerves. These observations suggest that the hypotensive action of AEE of which component is not affected by cholinesterase is due to direct action at parasympathetic receptor.

  • PDF

A Study on the Measurement of Whole-Body Vibration in Some Coal-fired Power Plant Workers

  • Heo, Seung-Moo;Lee, Yun Keun;Park, Hee Sok
    • 대한인간공학회지
    • /
    • 제32권4호
    • /
    • pp.341-344
    • /
    • 2013
  • Objective: This study measured and evaluated the characteristics of the whole body vibration experienced in some coal-fired power plant in Korea. Background: Few studies have been carried out in Korea about the effects of whole body vibration of power plants on humans. Method: The evaluation scheme suggested by the Law of Noise and Vibration Control was applied. Results: It was found that 28.9% of total measurement points were above the limit suggested by the law. Conclusion: Many workers are exposed to whole body vibration during their job completion, and more efforts should be applied to prevention and control of the plat vibration.

Application of Variable Selection for Prediction of Target Concentration

  • 김선우;김연주;김종원;윤길원
    • Bulletin of the Korean Chemical Society
    • /
    • 제20권5호
    • /
    • pp.525-527
    • /
    • 1999
  • Many types of chemical data tend to be characterized by many measured variables on each of a few observations. In this situation, target concentration can be predicted using multivariate statistical modeling. However, it is necessary to use a few variables considering size and cost of instrumentation, for an example, for development of a portable biomedical instrument. This study presents, with a spectral data set of total hemoglobin in whole blood, the possibility that modeling using only a few variables can improve predictability compared to modeling using all of the variables. Predictability from the model using three wavelengths selected from all possible regression method was improved, compared to the model using whole spectra (whole spectra: SEP = 0.4 g/dL, 3-wavelengths: SEP=0.3 g/dL). It appears that the proper selection of variables can be more effective than using whole spectra for determining the hemoglobin concentration in whole blood.

Utilization of whole genome treasure for the library construction of industrial enzymes

  • Kim, Won-Ho;Cho, Kyoung-Won;Jung, In-Su;Choi, Keum-Hwa;Hur, Byung-Ki;Kim, Geun-Joong
    • 한국생물공학회:학술대회논문집
    • /
    • 한국생물공학회 2003년도 생물공학의 동향(XIII)
    • /
    • pp.815-820
    • /
    • 2003
  • A huge database resulted from whole genome sequencing has provided a possibility of new information that is likely to extent the scope and thus changes the way of approach for the functional assigning of putative open reading frames annotated by whole genome sequence analyses. These are mainly realized by ease, one-step identification of putative genes using genomics or proteomics tools. A major challenge remained in biotechnology may translate these informations into better ways to screen or select a gene as a representative sequence. Further attempts to mine the related whole genes or partial DNA fragment from whole genome treasure, and then the incorporation of these sequences into a representative template, will result in the use of putative genes that can be translated into functional proteins or allowed the generation of new lineages as a valuable pool. Such screens enable rapid biochemical analysis and easy isolation of the target activity, thereby accelerating the screening of novel enzymes from the expanded library with related sequences. Information-based PCR amplification of whole genes and reconstitution of functional DNA fragments will provide a platform for expanding the functional spaces of potential enzymes, especially when used mixed- or metagenome as gene resources.

  • PDF