• 한국잠사곤충학회지
• /
• 제39권1호
• /
• pp.67-72
• /
• 1997

As a condition for obtaining the silk I type crystal that has stability and high reproducibility, after dissolving silk fibroin crystalline part (Fcp), the changes of recrystallized crystal structure according to dialytic pH were examined by x-ray diffraction and differential thermal analysis. The Fcp was obtained from the aqueous solution of silk fibroin enzymatic proteolyzed by chymotrypsin. The crystal structure of Fcp showed silk II type. When the Fcp was dissolved by 10M LiBr aqueous solution, the Fcp1 showed the silk II type at pH 9. However, besides the silk II type, the silk I type structure begins to appear at pH 8 and only the silk I type structure was found below pH 6. On the other hand, the Fcp2 that calcium chloride was used in the dissolution found only the silk I type crystal structure below pH8.

• Journal of Power Electronics
• /
• 제14권6호
• /
• pp.1157-1165
• /
• 2014

The T-type topology is a three-level topology that has an advantage in terms of its number of switching device and its efficiency when compared to the neutral-point clamped (NPC)-type topology. With the recent increase in the usage of the T-type topology, the interest in its reliability has also increased. Therefore, a tolerance control for a T-type rectifier is necessary to improve the reliability of applications when an open-switch fault occurs. NPC-type rectifiers cannot eliminate input current distortion completely. However, the T-type rectifier is able to restore distorted current. In this paper, a tolerance control for the $S_{x2}$ and $S_{x3}$ open-switch faults of a T-type rectifier is proposed where it is advantageous in terms of efficiency when compared with other tolerance controls. The performance of the proposed tolerance control is verified through simulation and experimental results.

• 한국전기전자재료학회:학술대회논문집
• /
• 한국전기전자재료학회 2002년도 하계학술대회 논문집 Vol.3 No.2
• /
• pp.674-677
• /
• 2002

In this paper, two kinds of windmill type motors which have a disk shape and a ring shape piezoelectric ceramics were studied. And characteristics of two models were compared with each others. A windmill type ultrasonic motor is composed of a stator, a rotor, and a ball bearing. The stator is made of a piezoelectric ceramics and two metals endcaps. When the piezoelectric ceramics vibrate, displacement of torsonal vibration appear at metal endcaps. The motor with 11.0[mm] diameter was studied by finite element analysis. The voltage of 100[V] was supplied at each model. Resonance frequency of 206.875[KHz] was obtained at the disk type, but ring type was 137.562[KHz]. The maximum torsonal displacement of $1.112[{\mu}m]$ was obtained at the disk type, but ring type was $1.698[{\mu}m]$.

• 미생물학회지
• /
• 제13권3호
• /
• pp.123-137
• /
• 1975

Sexual reproduction of paramecia have been accomplished through conjugation between individuals which have opposite mating type substances on their cilia when they were starved. Using selfing clone in which mating takes place, I examined whether a mating type change in indicidual cells required new protein and new mRNA synthesis or not and also shether there is a precursor relationship between both of the complementary mating type substances in their synthetic pathway. I found that 1. Mating type change needs new protein(s) and new mRNA synthesis. 2. Mating type substances are synthesized sequentially from mating type XIII to XIV 3. There might be a common precursor pool from which the mating type XIII substnace is synthesized and then complementary mating type XIV is fromed by addition of small group to the mating type XIII substance.

• 대한간호학회지
• /
• 제38권4호
• /
• pp.522-532
• /
• 2008

Purpose: The purpose of this study was to identify the types of anger expression in adolescent women. Methods: The Q-Methodology which provides a method of analyzing the individual's subjectivity was used. The 32 subjects classified 50 selected Q-statements on a 9 point scale to make a normal distribution. The collected data was analyzed by a PC-QUANL program. Results: Five types of anger expression in adolescent women were identified. Type I: Direct attacking expression type, Type II: Mature consideration type, Type III: Passive indirect expression type, Type IV: Avoidance conversion type, and Type V: Expression control type. Conclusion: This study revealed that different approaches of nursing intervention strategies are recommended based on the five types of anger expression and their characteristics.

• 기본간호학회지
• /
• 제5권2호
• /
• pp.167-180
• /
• 1998

The purpose of this study was to explore the subjective opinions related to the weight control by using Q-methodology. Forty four adults were selected for P-sample from July to August, 1998. The collected data were analyzed by PC Quanl program. The results were as follows : There were 5 types of the adult's opinions about the weight control. Type I(Concern about weight control) : This type believes that there is a problem with general social attitudes, but the weight control it self is necessary. Type II(Health conscious) : This type believes that good health is very important and weight control is way of maintaining and improving good health. Type III(Obsessive) : This type believes that weight control is absolutely necessary no matter what it takes including extreme dietary change. Type IV(Influence by social pressure) : This type believes that the external stimulation and help is needed to motivate weight control. Type V(Self control) : This type believes that self determination is necessary regardless of social pressure.

• 한국보건간호학회지
• /
• 제31권1호
• /
• pp.109-120
• /
• 2017

Purpose: This study examined the relationships among type D personality, self-efficacy, health promoting behaviors and mediating effects, as well as type D personality and health promoting behaviors of college students. Methods: From 10 May to 24 May 2013, a convenience sample of 223 subjects was recruited from a college in G city. Data analysis consisted of Pearson's correlation coefficient, followed by regression analysis. Results: The prevalence of type D personality was 21.4%. Type D individuals showed lower self-efficacy and interpersonal relationships than non-type D individuals. Type D personality (NA*SI) had signigicant negative correlations with self-efficacy and HPLP-II. Self-efficacy fully mediated the relationship between type D personality(NA*SI) and HPLP-II. Conclusion: One reason why type D individuals have maladaptive health behaviors is low self-efficacy.

• 여성건강간호학회지
• /
• 제21권4호
• /
• pp.272-283
• /
• 2015

Purpose: The purpose of this study was to identify the type of sexual assertiveness of female adolescents. Methods: A Q methodology which provided a method of analyzing the subjectivity of each type was used. Thirty-three female high school students classified 40 selected Q statements into 9 points standard. The collected data was analyzed by using the PC-QUNAL program. Results: Four types of sexual assertiveness manifested by female adolescents were identified: Type 1: Self-normative line-drawing type, Type 2: Pleasure-seeking negotiation type, Type 3: Passive relationship maintenance type, Type 4: future-oriented satisfaction-delay type. Conclusion: This study is meaningful because it provides empirical information necessary for the development of theories by verifying integrated attributes related to the female adolescents' sexual assertiveness. Results also induced the measuring tools and succeeding studies, and presented educational material for sex education that is tailored to the developmental level and characteristics of female adolescents.

• Journal of international Conference on Electrical Machines and Systems
• /
• 제2권1호
• /
• pp.1-8
• /
• 2013

Surface permanent magnet-type vernier motors with three magnet array-type rotors (parallel magnetized type, repulsion type, and Halbach type) are compared based on the pull-out torque. It was clarified that increasing the rotor radius increases the pull-out torque at a fixed three-phase alternating voltage. The mechanism for the pull-out torque increase on each magnet array type was different, when the effects of the increase were analyzed based on an induced electromotive force and a synchronous reactance. As a result, the design of the Halbach-type rotor was found to be especially effective for achieving high pull-out torque, because this array type achieves a large induced electromotive force $E_0$ and a small synchronous reactance $x_s$.

• Transactions on Electrical and Electronic Materials
• /
• 제8권5호
• /
• pp.222-225
• /
• 2007

In this paper, we compared the current limiting characteristics of both the hybrid type and the flux-lock type superconducting fault current limiters(SFCLs), which have a magnetic coupling structure between a primary winding and several secondary windings. The limiting impedances of two SFCLs were derived from each equivalent circuit considering the design parameters of SFCL such as the self-inductance of secondary winding and the resistance of $high-T_C$ superconducting(HTSC) element. Through the comparison for the limiting impedances of two SFCLs considering the dependence of the HTSC element's resistance on the applying voltage into the SFCL, the hybrid type SFCL was confirmed to have larger limiting impedance with smaller resistance of HTSC element than the flux-lock type SFCL. It was expected from the analysis that the hybrid type SFCL was more advantageous than the flux-lock type SFCL from the viewpoint of the fault current limiting level.