• 제목/요약/키워드: decrease

검색결과 35,719건 처리시간 0.058초

기화혼합장치를 사용한 스파크 점화기관의 기관성능 및 배기성능에 관한 연구 (A Study on the Power Output and Exhaust Emission using the Fuel Vaporizing Device in Spark-Ignition Engine)

  • 이성열
    • 오토저널
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    • 제9권6호
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    • pp.53-59
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    • 1987
  • The effect of the three types of fuel vaporizing device on the engine torque and exhaust emission was investigated. Among the three types of fuel vaporizing device designed for the experiments, a 88mm long device with mesh around the inside pipe showed stable lean mixture combustion up to 21:1 air-fuel ratio and reduced the exhaustion of CO and HC. Compared with the general trend in the decrease of engine torque it was observed that the decrease of engine torque in this lean mixture combustion with the new device was small.

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탄화수소 가스 첨가가 PPCP 장치에 의한 NOx 및 SOx 저감에 미치는 영향 (Effect of Adding Hydrocarbon Gases for Reduction of NOx and SOx Using PPCP)

  • 김홍석;강형수;정태용
    • 한국자동차공학회논문집
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    • 제7권5호
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    • pp.73-80
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    • 1999
  • To decrease NOx and SOx using PPCP(Pulse-induced Plasma Chemical Process). This study is tried to obtain the relation and the basic data under the various conditions such the initial concentrations of NOx and SOx. The additional amount of hydrocarbon gases. The concentration of oxygen and input power etc. Especially, this study is focused on the effects of the additional hydrocarbon gases on the decrease of NOx and SOx.

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전기설비의 절연파괴 특성에 미치는 감압 특성

  • 박동화
    • 한국조명전기설비학회:학술대회논문집
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    • 한국조명전기설비학회 1989년도 추계학술발표회논문집
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    • pp.37-40
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    • 1989
  • In the thesis reserch on the C.T.I. in phenolic resin as a parameter of atmospheric (IEC publication 112) 1) In according as one's decrease atmosph-eric, A number of drops with this as the start for a formative dry band and be pro-duced scintillation increased in a voltage over 300[V]. 2) In a 900[mb] increased this best a num-ber of drops for tracking. In accoding as one's decrease atmospheric increased C.T.I. value.

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Enzymatic and/or chemical dosages coupled with the clarification of the sample applied to the screening evaluation of heat load in commercial milks

  • Humbert, Gerard
    • 한국유가공학회:학술대회논문집
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    • 한국유가공기술과학회 2005년도 제61회 국제 유가공 심포지움
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    • pp.11-19
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    • 2005
  • Heat treatment is essential for hygienic safety and for extending shelf-life of milk. Heating of milk affects principally its physicochemical, nutritional and organoleptic properties. The most important changes are the decrease in whey protein solubility and the decrease in stability of casein micelles. Maillard reactions are also important and undesirable consequences.

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불확실한 환경 하에서의 정량발주 시스템

  • 최성희;양광모;박재현;강경식
    • 대한안전경영과학회:학술대회논문집
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    • 대한안전경영과학회 2004년도 추계학술대회
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    • pp.447-451
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    • 2004
  • Generally, Fixed Quantity ordering system (Q-system) uses linear model in inventory decrease. This paper focuses on that Fixed Quantity ordering system (Q-system) is based on a continuous review system. To use a continuous review system is because of an inventory decrease ration is not constant. Therefore, this paper introduces a method to select a model which is proper to virtual data under conditions which are inconstant.

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상대위상 현미경을 이용한 양파 표피세포의 상대위상 측정 (Measurement of Relative Phase Distribution of Onion Epidermal cells by using Relative Phase Microscope)

  • 신인희;김덕영
    • 한국광학회:학술대회논문집
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    • 한국광학회 2006년도 하계학술발표회 논문집
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    • pp.147-148
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    • 2006
  • Relative phase distribution of onion epidermal cells was measured by using the relative phase microscope with inverse linear polarizing method. Decrease of relative phase distribution of onion epidermal cells was also investigated as the elapse of time. In decrease of relative phase distribution, relative phase of cell membrane in onion epidermal cells decreased radically as compared with that of cytoplasm.

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A Novel Statistical Feature Selection Approach for Text Categorization

  • Fattah, Mohamed Abdel
    • Journal of Information Processing Systems
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    • 제13권5호
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    • pp.1397-1409
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    • 2017
  • For text categorization task, distinctive text features selection is important due to feature space high dimensionality. It is important to decrease the feature space dimension to decrease processing time and increase accuracy. In the current study, for text categorization task, we introduce a novel statistical feature selection approach. This approach measures the term distribution in all collection documents, the term distribution in a certain category and the term distribution in a certain class relative to other classes. The proposed method results show its superiority over the traditional feature selection methods.

A study on Propulsion Fuel consumption rate for orbit maintenance of LEO

  • 정도희;공창덕
    • 한국추진공학회:학술대회논문집
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    • 한국추진공학회 2000년도 제15회 학술강연회논문초록집
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    • pp.10-10
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    • 2000
  • For low Earth orbit, the atmosphere causes orbit altitude to decrease, If this decrease is not corrected by the satellite propulsive unit, the orbit decoys continuously unit reaches the dense atmosphere and satellite life ends. If active orbit maintenance is mode by satellite propulsive unit then fuel consumption is necessary, which must be considered in the satellite design. Especially interesting is the method for evaluating the fuel consumption role for maintenance of elliptical orbit developed in this paper.(omitted)

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Synthesis of 2-(3'-azido-and 3'-amino-3'-deoxy-$\beta$-D-ribofuranosyl)-thiazole-4- carboxamide

  • Shin, Ji-Hye;Liang, Cheng-Wu;Chun, Moon-Woo
    • 대한약학회:학술대회논문집
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    • 대한약학회 2003년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2-2
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    • pp.184.3-185
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    • 2003
  • Inosine 5'-monophosphate dehydrogenase (IMPDH) is a critical enzyme in the regulation of cell proliferation and differentiation. This enzyme catalyzes the $NAD^+$-dependent oxidation of IMP to XMP, the rate limiting step in de novo biosynthesis of guanine nucleotides. Therefore, the biochemical effect of IMPDH inhibition in sensitive cell types is decrease in intracellular guanine nucleotide levels, and the decrease in cellular GTP and deoxy GTP pool levels blocks DNA and RNA synthesis in rapidly proliferating tumor cells. (omitted)

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Mechanisms Controlling Feed Intake in Large-type Goats Fed on Dry Forage

  • Sunagawa, K.;Ooshiro, T.;Murase, Y.;Hazama, R.;Nagamine, I.
    • Asian-Australasian Journal of Animal Sciences
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    • 제20권8호
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    • pp.1182-1189
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    • 2007
  • An intracerebroventricular (ICV) infusion of somatostatin 1-28 (SRIF) was used as a thirst-controlling peptide antagonist to investigate whether or not thirst-controlling peptides are involved in the significant decrease in feed intake during the initial stages of feeding large-type goats on dry forage. A continuous ICV infusion of SRIF was conducted at a small dose of $4{\mu}g$ ml/h for 27 h from day 1 to day 2. Goats (n = 5) were fed roughly crushed alfalfa hay cubes for 2 h twice daily and water was given ad libitum. Feed intake was measured during ICV infusion of artificial cerebrospinal fluid (ACSF) and SRIF. The feed intake during SRIF infusion increased significantly compared to that during ACSF infusion. In comparison to the ACSF treatment, plasma osmolality during the SRIF treatment significantly decreased during the first half of the 2 h feeding period. The factor causing the decrease in plasma osmolality during the ICV infusion of SRIF was a decrease in plasma Na, K, Cl, and Mg concentrations. In comparison to the ACSF infusion treatment, parotid saliva secretion volumes during the 2 h feeding period in the SRIF infusion treatment were significantly larger. While there was no significant difference in cumulative water intake (thirst levels) between the SRIF and the ACSF treatments upon conclusion of the 2 h feeding period, based on the plasma osmolality results it is thought that thirst level increases brought about by alfalfa hay cube feeding in the first half of the feeding period were reduced. It is thought that the somatostatin-induced increases in feed intake during the 2 h feeding period in the present experiment were caused by decreases in plasma osmolality brought about by the somatostatin infusion. As a result, it is suggested that the significant decrease in feed intake during the initial stages of feeding in large-type goats given roughly crushed alfalfa hay cubes, was due to the actions of thirst-controlling peptides.