• 한국자기학회지
• /
• 제5권5호
• /
• pp.519-523
• /
• 1995

The Fe-TM-C-N nanocrystalline films (TM : Hf, Zr and Nb) are investigated to examine the relation between microstructure and soft magnetic properties. In these films, as the atomic radius of TM element increases, $P_{N2}$ which was added to get good soft magnetic properties was decreased and the maximum value of the permeability shifted to the high Fe range in the composition diagram. The best soft magnetic properties achieved in these films are : Hc of 0.15 Oe, $\mu_{eff}$ of 7800 (1MHz) and $4{\pi}M_{s}$ of 17.5 kG in Fe-Hf-C-N film ; Hc of 0.06 Oe, $\mu_{eff}$ of 2750 (1MHz) and $4{\pi}M_{s}$ of 16.8 kG in Fe-Zr-C-N film and Hc of 0.31 Oe; $\mu_{eff}$ of 2100 (1MHz) and $4{\pi}M_{s}$ of 15.5 kG in Fe-Nb-C-N film. It was considered that the stronger the bonding force between TM and C(N), the finer TM(C,N) phase is precipitated and therefore, the finer $\alpha$-Fe grains are formed. The effective permeability of the Fe-Zr-C-N films and Fe-Nb-C-N films remains nearly constant up to 10 MHz.

• 대한수학회지
• /
• 제33권1호
• /
• pp.121-136
• /
• 1996

Met $\tilde{M} = (\tilde{M}, \tilde{J}, <>)$ be an almost Hermitian manifold and M a submanifold of $\tilde{M}$. According to the behavior of the tangent bundle TM with respect to the action of $\tilde{J}$, we have two typical classes of submanifolds. One of them is the class of almost complex submanifolds and another is the class of totally real submanifolds. In 1990, B. Y. Chen [4], [5] introduced the concept of the class of slant submanifolds which involve the above two classes. He used the Wirtinger angle to measure the behavior of TM with respect to the action of $\tilde{J}$.

• Journal of Magnetics
• /
• 제15권1호
• /
• pp.29-31
• /
• 2010

We studied the magnetic properties of $TmFe_2O_4$. The magnetization measurements revealed the magnetic ordering of Fe spins at around 240 K. The difference between zero-field-cooled (ZFC) and field-cooled (FC) magnetization was close to the thermoremanent magnetization (TRM), indicating the glass behavior exhibited by this material.

• 대한치과보철학회지
• /
• 제52권2호
• /
• pp.97-104
• /
• 2014

연구 목적: 본 연구의 목적은 현재 시판되는 4종의 레진계 임플란트 전용 임시 시멘트를 디지털 방사선 사진을 분석하여 방사선 불투과성을 비교 평가 하는 것이다. 연구 재료 및 방법: 주문 제작한 분할형 금속몰드에 4종의 레진계 임플란트 시멘트(Estemp $Implant^{TM}$ (Spident, Incheon, Korea), $Premier^{(R)}$Implant (Premier, Pennsylvania, USA), $Cem-Implant^{TM}$ (B.J.M lab, Or-yehuda, Israel), $InterCem^{TM}$ (SCI-PHARM, California, USA))와 대조군인 Elite Cement$100^{TM}$ (GC, Tokyo, Japan)를 각각의 제조사의 지시에 따라 혼합하여 경화시킨다. 시멘트당 두께에 따라 각 10개씩 총 150개의 시편을 제작하고 각 시편을 순수(99%이상) aluminum으로 제작한 step wedge와 나란히 위치시켜 Intraoral X-ray unit (Esx, Vatech, Korea)와 디지털 X-ray sensor (EzSensor, Vatec. Korea)를 사용하여 촬영하였다. 디지털 방사선 이미지를 Image J 1.47m (Wayne Rasband, National Institutes of Health, USA)과 Color inspector 3D Ver 2.0 (Interaktive Visualisierung von Farbr$\ddot{a}$umen, Berlin, Germany)의 프로그램을 이용하여 aluminum wedge equivalent thickness (mm Al)를 평가하였다. 결과: 본 연구에서 사용된 5종의 시멘트 중 방사선 불투과성은 Elite Cement$100^{TM}$이 모든 두께에서 가장 높았으며 레진계 임플란트용 시멘트중에서 $InterCem^{TM}$이 가장 높았고, $Premier^{(R)}$ Implant $Cement^{TM}$, $Cem-Implant^{TM}$, Estemp $Implant^{TM}$순으로 나타났다. 레진계 임플란트용 시멘트 중 $InterCem^{TM}$은 모든 두께에서 ISO Standard No. 4049에 맞는 방사선 불투과성을 보였고, $Cem-Implant^{TM}$는 0.5 mm 두께에서만 ISO Standard No. 4049에 적합한 방사선 불투과도를 나타냈다. 결론:이번 연구에 사용된 레진계 임플란트 시멘트중 방사선 불투과도는 전반적으로 높지 않았고, $InterCem^{TM}$ 만이 연구조건 및 기준에 만족하는 방사선 불투과도를 보였다.

• 대한치과보존학회:학술대회논문집
• /
• 대한치과보존학회 2001년도 추계학술대회(제116회) 및 13회 Workshop 제3회 한ㆍ일 치과보존학회 공동학술대회 초록집
• /
• pp.576.1-576
• /
• 2001

The objective of this study was to evaluate the effect of configuration of cavity on the mechanical properties such as flexural strength and elastic modulus of resin composites. The materials used were $Clearfil^{TM}$ AP-X(Kuraray, Japan) and $Esthet-X^{TM}$(Dentsply, USA) as resin composite. Dentin-bonding systems used in the study were $Clearfil^{TM}$ SE Bond(Kuraray, Japan) and Prime ＆ Bond $NT^{TM}$(Dentsply, USA). The specimens were prepared as 6 groups with 2 control groups and 4 experimental groups.(omitted)

• 한국통신학회논문지
• /
• 제22권4호
• /
• pp.605-610
• /
• 1997

An analysis method for the electromagnetic scattering of a Tm polarized plane wave from a periodic strip grating over a grounded dielectric slab is considered from the viewpoint of reflection grating problem. The parameters of strip gratings showing Bargg and Off-Bragg blazing phenomena at the frequency of 10GHz are derived teoretically. The strip grating structure is implemented using Aluminum plate(groung conductor), paraffin(dielectric material.epsilon.$_{r}$=2.24), and copper(strip conductor0.08m thickness). The experimental results(reflection power) of Bragg as well as Off-Bragg blazing phenomenon for TM polarized plane wave have been compared with the theoretical results and fairly good agreements between theory and experiment have been observed.d.

• Molecules and Cells
• /
• 제38권12호
• /
• pp.1037-1043
• /
• 2015

The TAZ activator 2-butyl-5-methyl-6-(pyridine-3-yl)-3-[2'-(1H-tetrazole-5-yl)-biphenyl-4-ylmethyl]-3H-imidazo[4,5-b]pyridine] (TM-25659) inhibits adipocyte differentiation by interacting with peroxisome proliferator-activated receptor gamma. 1 TM-25659 was previously shown to decrease weight gain in a high fat (HF) diet-induced obesity (DIO) mouse model. However, the fundamental mechanisms underlying the effects of TM-25659 remain unknown. Therefore, we investigated the effects of TM-25659 on skeletal muscle functions in C2 myotubes and C57BL/6J mice. We studied the molecular mechanisms underlying the contribution of TM-25659 to palmitate (PA)-induced insulin resistance in C2 myotubes. TM-25659 improved PA-induced insulin resistance and inflammation in C2 myotubes. In addition, TM-25659 increased FGF21 mRNA expression, protein levels, and FGF21 secretion in C2 myotubes via activation of GCN2 pathways (GCN2-$phosphoelF2{\alpha}$-ATF4 and FGF21). This beneficial effect of TM-25659 was diminished by FGF21 siRNA. C57BL/6J mice were fed a HF diet for 30 weeks. The HF-diet group was randomly divided into two groups for the next 14 days: the HF-diet and HF-diet + TM-25659 groups. The HF diet + TM-25659-treated mice showed improvements in their fasting blood glucose levels, insulin sensitivity, insulin-stimulated Akt phosphorylation, and inflammation, but neither body weight nor food intake was affected. The HF diet + TM-25659-treated mice also exhibited increased expression of both FGF21 mRNA and protein. These data indicate that TM-25659 may be beneficial for treating insulin resistance by inducing FGF21 in models of PA-induced insulin resistance and HF diet-induced insulin resistance.

• 한국IT서비스학회:학술대회논문집
• /
• 한국IT서비스학회 2003년도 추계학술대회
• /
• pp.589-605
• /
• 2003

• 대한지역사회영양학회지
• /
• 제8권4호
• /
• pp.584-594
• /
• 2003

The lactose, total nitrogen and total lipid contents of human breast milk were determined longitudinally after protein and term deliveries. Milk samples were obtained from day 2 to 5, on weeks 1, 2, 4, and 6 after preform (PM : n = 24) and term (TM : n = 22) deliveries. The lactose contents of PM and TM increased from 5.28 g/dl and 5.93 g/dl at days 2 to 5, to 7.95 g/dl,7.87 g/dl at 6 weeks, respectively. The total nitrogen contents of PM and TM decreased significantly during the first 6 weeks after birth (from 374 to 220 mg/dl versus 382 to 220 mg/dl respectively). However the total lipid contents of the PM and TM increased during the same periods. Significant differences in the total lipid contents between the PM and TM were 2.15 versus 3.27 g/dl at 2 weeks, and 3.26 versus 2.52 g/dl at 6 weeks, respectively. The energy intakes of preform infants was 134.8 ㎉/kg/d during the 6 weeks of lactation, which satisfied with energy requirements (85-130 ㎉/kg/d) of the preform infants. (Korean J Community Nutrition 8(4) : 584-594, 2003)

• Journal of the Optical Society of Korea
• /
• 제19권1호
• /
• pp.7-12
• /
• 2015

Up to ${\sim}520{\mu}J$ broadband mid-infrared (IR) supercontinuum (SC) generation in telecommunication multimode fiber (MMF) directly pumped by a $2.054{\mu}m$ nanosecond Q-switched Tm, $Ho:YVO_4$ laser is demonstrated. An average output power of 3.64 W is obtained in the band of ~1900 to ~2600 nm, and the corresponding optic-to-optic conversion efficiency is 67% by considering the coupling efficiency. The spectrum has extremely high flatness with negligible intensity variation (<2%) in the wavelength interval of ~2070 to ~2475 nm. The SC long-wavelength edge is limited by the silicon glass material loss, and by optimizing the MMF length, the SC spectrum could extend out to ${\sim}2.6{\mu}m$. The output SC pulse shapes are measured at different output powers, and no splits are found. The SC laser beam is nearly diffraction limited with an $M^2=1.15$ in $2.1{\mu}m$ measured by the traveling knife-edge method, and the laser beam spot is monitored by an infrared vidicon camera.