한국인 얼굴의 편평도 : 얼굴깊이를 이용한 연구 using Facial Depth

송우철,윤관현,고기석 대한해부학회 2003 Anatomy & Cell Biology Vol.36 No.6

사과의 열과원인에 관한 조사연구

권병규,강영호,이우승,성민웅,이상윤,조화석 慶北大學校 生産技術硏究所 1970 生産技術 Vol.4 No.-

It is very important to eliminate the immense economic loss caused by cracking in apples through examining the causes of cracking and divising a possible method of prevention of it. Several investigators published their findings on the causes of the cracking of apples which develop on the skin of Ralls apples. However, no definite conclusions or established methods of prevention have been published to this date. Therefore, in this study the causes of the cracking of apples are examined through the use of several methods: (a) the histological and physiological, (b) the microelemental, and (c) the natural environmental. The results are as follows: 1). At the early stage of growth, the thicknesses of the cuticle, as well as of the subepidermis, were the same in Ralls apples without envelopes, Ralls with envelopes, and Jonathan. However. at maturity. the thicknesses differed in the following manner; Ralls apples without envelopes were thickest: Ralls envelopes were less thick than those without envelopes; while Jonathan apples were thinest. 2). Although in the Ralls without envelopes the epidermis is arranged in a brick wall like layer during maturity, in the middle of August the brick wall like epidermis begins to collapse and is surrounded by the cuticle. The process of cracking seems to start with the lenticle and the fruit spot. 3). The rate of cracking was slowed by application of a mixture of IAA and Bordeaux mixture solution, but cracking was not completely halted by this treatment. 4). The stem of a branch laden with apples was put into a solution containing Mn-54, and after absorption took place the distribution of Mn-54 was measured. The results of the measurements were as follows; the bark contained the most Mn-54; the leaves contained the second largest quantitiy; and the apples has the least. 5). The two orchards which were tested tended to have a low soil pH, and a high concentration of soil-solution Mn. 6). The soil with a high rate of cracking tended to have a high pH, which the soil with a low rate had a low pH. 7). In trees with a high rate of cracking, the amount of Mn in the leaves was equal to the amount in the stalk. However, in trees with a low rate of cracking, the amount of Mn in the leaves tended to be high compared with that found in the stalk. 8). The epidermis of the Ralls had a high Ca content than the epidermis of the Johnathan. 9). The epidermis of cracked apples tended to have a higher content of Ca, K,P, Cu and Fe than the epidermis of sound apples. 10). Amoug the apples tested, 11% cracked during the course of the year, with the cracking starting in the middle of Sept. 1969, This low percentage of cracking can be attributed to the small amount of rain during harvest time (late Sept. and October). The total of the added temperature during May, June, and July was 1962℃. 11). Cracking occurred more frequently in apples on the periphery of the tree, in well-colored apples, on the south side of the apples, and on the cheeks of the apples. These occurrances can perhaps be attributed to the amount of sunlight. 12). In the trees tested with newspaper envelops, cracking occurred in 1.9% of the apples with envelopes, and in 11.9% of the apples without envelopes. In the trees tested with Polysteron paper envelopes, cracking occurred in 2.5% of the apples with envelops, and 13.4% of the apples without envelopes. The apples with Polysteron paper envelopes were less infected by insects than the apples with newspaper envelopes. 13). Cracking occurred in 2.4% of the apples covered with vinyl, while in trees not covered with vinyl, 16.6% of the apples crack. The Artificial precipitation produced during harvest time increased the rate of cracking.

수력발전기술의 신개발과 조력발전 프로젝트 제안

Wu-Xin Yun 한국수자원학회 2003 한국수자원학회논문집 Vol.36 No.1

시화 조력발전소용으로는 벌브식 수차발전기가 가장 경제적인 수차형식이다. 본 고에서는, 하얼빈 전기기기 제작(주)의 수력발전 기기 설계를 포함한 전반적인 사항을 제안한다. 예비적으로 시화 조력발전소에 적용 가능한 벌브형 수차발전기에 대한 주요 인자와 일반적인 사항을 기술하고자 한다.

Voltammetric Investigation of Vitamin B_6 at a Glassy Carbon Electrode and Its Application in Determination

Wu, Yun-Hua,Song, Fa-Jun Korean Chemical Society 2008 Bulletin of the Korean Chemical Society Vol.29 No.1

The voltammetic behavior of Vitamin B6 (VB6) was studied at a glassy carbon electrode in phosphate buffers using cyclic, linear sweep and differential pulse voltammetry. The oxidation process was shown to be irreversible over the entire pH range studied (4.0-10.0) and was adsorption controlled. The adsorption amount of VB6 on the glassy carbon electrode was examined by chronocoulometry and the value of n, product of transfer coefficient and number of electrons transferred in the rate determining step, was determined from Tafel plot. VB6 was determined by differential pulse voltammetry and the peak current was found linearly with its concentration in the range of 3 10-7-2 10-4 mol L-1. The detection limit was 1 10-7 mol L-1. The procedure was successfully applied for the assay of VB6 in tablets.

ZNF552, a novel human KRAB/C2H2 zinc finger protein, inhibits AP-1- and SRE-mediated transcriptional activity

( Yun Deng ),( Bi Sheng Liu ),( Xiong Wei Fan ),( Yue Qun Wang ),( Ming Tang ),( Xiao Yang Mo ),( Yong Qing Li ),( Zao Chu Ying ),( Yong Qi Wan ),( Na Luo ),( Jun Mei Zhou ),( Xiu Shan Wu ),( Wu Zhou 한국생화학분자생물학회 (구 한국생화학회) 2010 BMB Reports Vol.43 No.3

In this study, we report the identification and characterization of a novel C2H2 zinc finger protein, ZNF552, from a human embryonic heart cDNA library. ZNF552 is composed of three exons and two introns and maps to chromosome 19q13.43. The cDNA of ZNF552 is 2.3 kb, encoding 407 amino acids with an amino-terminal KRAB domain and seven carboxyl-terminal C2H2 zinc finger motifs in the nucleus and cytoplasm. Northern blotting analysis indicated that a 2.3 kb transcript specific for ZNF552 was expressed in liver, lung, spleen, testis and kidney, especially with a higher level in the lung and testis in human adult tissues. Reporter gene assays showed that ZNF552 was a transcriptional repressor, and overexpression of ZNF552 in the COS-7 cells inhibited the transcriptional activities of AP-1 and SRE, which could be relieved through RNAi analysis. Deletion studies showed that the KRAB domain of ZNF552 may be involved in this inhibition. [BMB reports 2010; 43(3): 193-198]

Biosorption of Zn2+ and Pb2+ from aqueous solutions using native and microwave treated Flammulina velutipes stipe

Yun Wu,Zhongze Zhou,Ruiwen Yan,Jun Zheng 한국화학공학회 2014 Korean Journal of Chemical Engineering Vol.31 No.8

Native stipe (NS) and microwave treated stipe (MTS) of Flammulina velutipes were utilized for the biosorptionof Zn2+ and Pb2+ ions from aqueous solution. The effects of pH, contact time, and initial concentration on thebiosorption were studied for each metal separately. The desired pH of aqueous solution was found to be 6.0 for theremoval of Zn2+ ions and 5.0 for the removal of Pb2+ ions. The percent removal of both metals was found to increasewith the increase in contact time; biosorption equilibrium was established in about 60min. The maximum biosorptionof Zn2+ and Pb2+ ions from single component systems can be successfully described by Langmuir and Freundlich models;the biosorption kinetics can be accurately described by a second-order kinetic model. The present data from these studiesconfirms that the native and microwave treated forms of Flammulina velutipes stipe have the potential to be used forthe biosorption of Zn2+ and Pb2+ ions from aqueous solution. The metal biosorption capacities of NS for Zn2+ and Pb2+were 58.14 and 151.51 mg g−1, respectively, while the biosorption capacities of MTS for the both metals were 95.24and 172.41 mg g−1, respectively.

Unified Parametric Approaches for Observer Design in Matrix Second-order Linear Systems

Yun-Li Wu,Guang-Ren Duan 대한전기학회 2005 International Journal of Control, Automation, and Vol.3 No.2

Low temperature fabrication of (001) FePt on amorphous substrates

Yun-Chang Wu,Liang-Wei Wang,Chih-Huang Lai 한국자기학회 2007 한국자기학회 학술연구발표회 논문개요집 Vol.- No.-

Seismic behavior of composite walls with encased steel truss

Yun-tian Wu,Dao-yang Kang,Yi-ting Su,Yeong-Bin Yang 국제구조공학회 2016 Steel and Composite Structures, An International J Vol.22 No.2

This paper studies the seismic behavior of reinforced concrete (RC) walls with encased cold-formed and thin-walled (CFTW) steel truss, which can be used as an alternative to the conventional RC walls or steel reinforced concrete (SRC) composite walls for high-rise buildings in high seismic regions. Seven one-fourth scaled RC wall specimens with encased CFTW steel truss were designed, manufactured and tested to failure under reversed cyclic lateral load and constant axial load. The test parameters were the axial load ratio, configuration and volumetric steel ratio of encased web brace. The behaviors of the test specimens, including damage formation, failure mode, hysteretic curves, stiffness degradation, ductility and energy dissipation, were examined. Test results indicate that the encased web braces can effectively improve the ductility and energy dissipation capacity of RC walls. The steel angles are more suitable to be used as the web brace than the latticed batten plates in enhancing the ductility and energy dissipation. Higher axial load ratio is beneficial to lateral load capacity, but can result in reduced ductility and energy dissipation capacity. A volumetric ratio about 0.25% of encased web brace is believed cost-effective in ensuring satisfactory seismic performance of RC walls. The axial load ratio should not exceed the maximum level, about 0.20 for the nominal value or about 0.50 for the design value. Numerical analyses were performed to predict the backbone curves of the specimens and calculation formula from the Chinese Code for Design of Composite Structures was used to predict the maximum lateral load capacity. The comparison shows good agreement between the test and predicted results.

수력발전기술의 신개발과 조력발전 프로젝트 제안

Yun, Wu-Xin 한국수자원학회 2003 물과 미래(한국수자원학회지) Vol.36 No.1

시화 조력발전소용으로는 벌브식 수차발전기가 가장 경제적인 수차형식이다. 본 고에서는, 하얼빈 전기기기 제작(주)의 수력발전 기기 설계를 포함한 전반적인 사항을 제안한다. 예비적으로 시화 조력발전소에 적용 가능한 벌브형 수차발전기에 대한 주요 인자와 일반적인 사항을 기술하고자 한다.