• Title/Summary/Keyword: I.C.U.

Search Result 981, Processing Time 0.032 seconds

ON SUPER CONTINUOUS FUNCTIONS

  • Baker, C.W.
    • Bulletin of the Korean Mathematical Society
    • /
    • v.22 no.1
    • /
    • pp.17-22
    • /
    • 1985
  • B.M. Munshi and D.S. Bassan defined and developed the concept of super continuity in [5]. The concept has been investigated further by I. L. Reilly and M. K. Vamanamurthy in [6] where super continuity is characterized in terms of the semi-regularization topology. Super continuity is related to the concepts of .delta.-continuity and strong .theta.-continuity developed by T. Noiri in [7]. The purpose of this note is to derive relationships between super continuity and other strong continuity conditions and to develop additional properties of super continuous functions. Super continuity implies continuity, but the converse implication is false [5]. Super continuity is strictly between strong .theta.-continuity and .delta.-continuity and strictly between complete continuity and .delta.-continuity. The symbols X and Y will denote topological spaces with no separation axioms assumed unless explicity stated. The closure and interior of a subset U of a space X will be denoted by Cl(U) and Int(U) respectively and U is said to be regular open (resp. regular closed) if U=Int[Cl(U) (resp. U=Cl(Int(U)]. If necessary, a subscript will be added to denote the space in which the closure or interior is taken.

  • PDF

An Experimental Study on Flame Structure and Combustion Characteristics of Turbulent Diffusion Flame(I) (난류확산화염의 화염구조와 연소특성에 관한 실험적 연구)

  • Choe, Byeong-Ryun;Jang, In-Gap;Choe, Gyeong-Min
    • Transactions of the Korean Society of Mechanical Engineers B
    • /
    • v.20 no.3
    • /
    • pp.1028-1039
    • /
    • 1996
  • This study was focused on the examination of the flame structure and the combustion characteristics of diffusion flame which was formed the turbulent shear flow of a double coaxial air jet system. The shear flow was formed by the difference velocity of surrounding air jet(U$\_$s/) and center air jet (U$\_$c/). So experimental condition was divided S-type flame (.lambda. > 1) and C-type flame (.lambda. < 1) by velocity ratio .lambda. (=U$\_$s//U$\_$c/). For examination of the flame structure and the combustion characteristics in diffusion flame, coherent structure was observed in flame by schlieren photograph method. We measured fluctuating temperature and ion current simultaneously and accomplished the statistical analysis of its. According to schlieren photograph, the flame was stabilized in the rim of the direction of lower velocity air jet, coherent eddy was produced and developed by higher velocity air jet. The statistical data of fluctuating temperature and ion current was indicated that reaction was dominated by higher velocity air jet. The mixing state of burnt gas and non-burnt gas was distributed the wide area at Z = 100 mm of C-type flame.

Physicochemical and Textural Properties of Chestnut Starches (밤전분의 물리화학적 특성과 텍스쳐 특성)

  • 김세권;전유진;김용태;이병조;강옥주
    • Journal of the Korean Society of Food Science and Nutrition
    • /
    • v.24 no.4
    • /
    • pp.594-600
    • /
    • 1995
  • To efficiently utilize not only fresh chestnut(FC) but also wormy chestnut(WC), four types of chestnut starches which were fresh chestnut starch(FCS), fresh chestnut crude starch(FCCS), wormy crude starch(WCS) and wormy chestnut crude starch(WCCS) were extracted. Amylose content of FCS(46.5%) and water binding capacity of FCCS(103.0%) were higher than those of othe three, respectively. Swelling powers of all sample starches increased rapidly from 6$0^{\circ}C$ to 8$0^{\circ}C$. Solubilities showed the same pattern as the swelling powers. In the textural properteis investigated with IUTM(instron universal testing machine), hardnesses and elasticties of chestnut starches were 50~58I.U. and 14~16I.U., respectively. The results of textural evaluations showed that it was possible to prepare chestnut mook with FCS, FCCS and WCS.

  • PDF

Appropriate Drainage Position in Coir Bag Culture Using U-type Bed (U자형 베드에서 코이어 자루재배 시 적정 배액구 위치 구명)

  • Lee, Mun Haeng;Lee, Hee Keyung;Kim, Sung Eun;Lee, Hwan Gu;Lee, Sun Gye;Park, Guen Se;Chae, Young;Kim, Young Shik
    • Journal of Bio-Environment Control
    • /
    • v.22 no.4
    • /
    • pp.408-412
    • /
    • 2013
  • This study was carried out to investigate damp injury caused by tomato coir bag culture and prevent that. The tomato variety was used 'Minichal', and tomatoes were grown in greenhouse. The nutrient solution based on Yamazaki Tomato Standard Solution was irrigated from one hour after sunrise to two hour before sunset. The slits for darainage were made in three types; I, L, and bottom slit type. The coir bag of I and L type had six slits of 15cm length, that of bottom slit type had three slits of 15 cm length. The weight of coir bag in 24 hours after saturation was 14.2 kg in I type, 13.8 kg in L type, and 12.8 kg in bottom slit type, but there was not significant difference. The weight of coir bag after one day irrigation was 14.5 kg, 14.2 kg, and 13.3 kg at L, I, and bottm slit type, respectively. This means that the moisture content of coir bag during cultivation was lowest in bottom slit type. The number of adventitious root on stem was 160, 170, and 53 at I, L, and bottom slit type, respectively. The dry weight of root and root length were highest at bottom slit type, compared to other treatment. The marketable yield was highest 26.5 kg/20 plant in bottom slit type. For increasing yield and preventing damp injury, bottom slit type was most effective at U type bed coir bag culture.

Formation and Intergrowth of the Superconducting Phase in the Bi2Sr2Can-1CunOx (n=2~4) System

  • Cheon, Min-Woo;Park, Yong-Pil
    • Transactions on Electrical and Electronic Materials
    • /
    • v.5 no.5
    • /
    • pp.199-203
    • /
    • 2004
  • Superconducting B $i_2$S $r_2$C $a_{n-l}$C $u_{n}$ $O_{x}$(n=2~4) thin films were prepared by single target DC-magnetron sputtering. And, that was compared with the B $i_2$S $r_2$C $a_{n-l}$C $u_{n}$ $O_{x}$(n=1~3) thin film fabricated by using the ion beam sputtering. Phase intergrowth among n=2-3, 3-4 and 4-5 phases was observed. The molar fraction of each phase in the mixed crystal of the deposited films was determined by x-ray diffraction analyses and investigated as a function of $O_2$ gas pressure during sputtering. We investigated the changes of the superconducting properties by molar fraction of each phase. Also, the thin film surface observation was carried out by atomic force microscope. The images show the average particle size decreases, and the distribution density of particles on the film surface was to increase with lower gas pressures. The fabrication conditions for selective growth of the single n=2, 3 and 4 phases in BiSrC $a_{n-l}$C $u_{n}$ $O_{x}$(n=2~4) thin film are discussed.e discussed.ussed.


(34141) Korea Institute of Science and Technology Information, 245, Daehak-ro, Yuseong-gu, Daejeon
Copyright (C) KISTI. All Rights Reserved.