• Title/Summary/Keyword: SC200

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Biochemieal Effect on Methionine Metabolism to the Expperimental Rats on Rice Diet (백미사과(白米飼科)가 실험용백서(實驗用白鼠)의 Methionine대사(代謝)에 미치는 영향(影饗)에 대(對)한 생물화학적연구(生物化學的硏究))

  • Jung, Jee-Chang;Haw, Kum
    • Journal of Nutrition and Health
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    • v.1 no.3_4
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    • pp.197-200
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    • 1968
  • Using the $Methionine-2-C^{14}$, the metabolism of methionine to the experimental rats on rice diet was studied comparing with that to the rats on stock diet in this paper. The National Institute of Health strain of weaning albino rats were housed into the individual cages deviding into 2 groups, the rice diet (RD) group and the stock diet (SD) group, and fed on rice diet and stock diet respectively for 10 weeks. On the day of experiment, the rats were parenterally administered. the $methionine-2-C^{14}$ solution after fasting over night. And then the rats were sacrificed by ether anesthesia by time being of one, three, six, and twelve hours each and the organs, pituitary gland, pancreas, spleen, liver, and kidney, were taken out for the determinations of radioactivities. And also the excretion of radioactivities through urine were determined by time being. The radioactivities were determined by Autoscaler SC-51 using the planchets. The results of radioactivities of urine excretion were shown at table 3 and the results of radioactivities distibutions in the organs by time being after parenteral administration of $methionine-2-C^{14}$ were shown table 4 in the original paper. According to the results, the following are summarized; 1. The growth experiment result of rats on. rice diet and stock diet were same as shown by the previous workers indicating significant growth inhibition at the rice diet group. 2. Due to the result of radioactivity excretion through urine after administration of $methionine-2-C^{14}$, it might he considered that methionine in the rice diet seems to be limited. However, it seems to be not 주 mostly limited. 3. And due to the results of radioactivity distribution in the organs by time being, the radioactivity in the liver tissue showed appearently higher readings at this methionine study compared with the results at the lysine study shown by HAW and his co-worker. This might be interpreted, though it is not clear, that liver might require methionine as a deficient amino acid at the tissue because methionine is limited at the rice diet.

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Removal of Organic Wax and Particles on Final Polished Wafer by Ozonated DI Water

  • Yi, Jae-Hwan;Lee, Seung-Ho;Kim, Tae-Gon;Lee, Gun-Ho;Choi, Eun-Suck;Park, Jin-Goo
    • Korean Journal of Materials Research
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    • v.18 no.6
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    • pp.307-312
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    • 2008
  • In this study, a new cleaning process with a low cost of ownership (CoO) was developed with ozonated DI water ($DIO_3$). An ozone concentration of 40 ppm at room temperature was used to remove organic wax film and particles. Wax residues thicker than $200\;{\AA}$ remained after only a commercial dewaxer treatment. A $DIO_3$ treatment in place of a dewaxer showed a low removal rate on a thick wax layer of $8000\;{\AA}$ due to the diffusion-limited reaction of ozone. A dewaxer was combined with a $DIO_3$ rinse to reduce the wax removal time and remove wax residue completely. Replacing DI rinse with the $DIO_3$ rinse resulted in a surface with a contact angle of less than $5^{\circ}$, which indicates no further cleaning steps would be required. The particle removal efficiency (PRE) was further improved by combining a SC-1 cleaning step with the $DIO_3$ rinsing process. A reduction in the process time was obtained by introducing $DIO_3$ cleaning with a dewaxing process.

Computer simulation for the effects of inserting the textured ZnO and buffer layer in the rear side of ZnO/nip-SiC: H/metal type amorphous silicon solar cells (Zno/nip-SiC:H/금속기판 구조 비정질 실리콘 태양전지의 후면 ZnO 및 완충층 삽입 효과에 대한 컴퓨터 수치해석)

  • Jang, Jae-Hoon;Lim, Koeng-Su
    • Proceedings of the KIEE Conference
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    • 1994.07b
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    • pp.1277-1279
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    • 1994
  • In the structure of ZnO/nip-SiC: H/metal substrate amorphous silicon (a-Si:H) solar cells, the effects of inserting a rear textured ZnO in the p-SiC:H/metal interface and a graded bandgap buffer layer in the i/p-SiC:H have been analysed by computer simulation. The incident light was taken to have an intensity of $100mW/cm^2$(AM-1). The thickness of the a-Si:H n, ${\delta}$-doped a-SiC:H p, and buffer layers was assumed to be $200{\AA},\;66{\AA}$, and $80{\AA}$, respectively. The scattering coefficients of the front and back ZnO were taken to be 0.2 and 0.7, respectively. Inserting the rear buffer layer significantly increases the open circuit voltage($V_{oc}$) due to reduction of the i/p interface recombination rate. The use of textured ZnO markedly improves collection efficiency in the long wavelengths( above ${\sim}550nm$ ) by back scattering and light confinement effects, resulting in dramatic enhancement of the short circuit current density($J_{sc}$). By using the rear buffer and textured ZnO, the i-layer thickness of the ceil for obtaining the maximum efficiency becomes thinner(${\sim}2500{\AA}$). From these results, it is concluded that the use of textured ZnO and buffer layer at the backside of the ceil is very effective for enhancing the conversion efficiency and reducing the degradation of a-Si:H pin-type solar cells.

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(Implementation of Current-Mode CMOS Multiple-Valued Logic Circuits) (전류 모드 CMOS 다치 논리 회로의 구현)

  • Seong, Hyeon-Gyeong;Han, Yeong-Hwan;Sim, Jae-Hwan
    • Journal of the Institute of Electronics Engineers of Korea SC
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    • v.39 no.3
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    • pp.191-200
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    • 2002
  • In this paper, we present the method transforming the interval functions into the truncated difference functions for multi-variable multi-valued functions and implementing the truncated difference functions to the multiple valued logic circuits with uniform patterns using the current mirror circuits and the inhibit circuits by current-mode CMOS. Also, we apply the presented methods to the implementation of circuits for additive truth table of 2-variable 4-valued MOD(4) and multiplicative truth table of 2-variable 4-valued finite fields GF(4). These circuits are simulated under 2${\mu}{\textrm}{m}$ CMOS standard technology, 15$mutextrm{A}$ unit current, and 3.3V power supply voltage using PSpice. The simulation results have shown the satisfying current characteristics. Both implemented circuits using current-mode CMOS have the uniform Patterns and the regularity of interconnection. Also, it is expansible for the variables of multiple valued logic functions and are suitable for VLSI implementation.

A Study of Mobile Phone Interface Module Development for DGPS (GDPS를 위한 휴대전화 Interface Module 개발에 관한 연구)

  • 김창수;윤희철;이태오;정성훈;임재홍
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2002.05a
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    • pp.197-200
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    • 2002
  • The current Inn technique is many problems that is permission of radio station using RF Wireless Modem, that is influence of geographic obstacle using radio wave, that is frequency interference, that is finiteness of frequency resources. In this paper, we are solved many elements, IM replaces RF Wireless Modem, we suggest transmission technique of correction message using mobile phone, we researched Interface Module development which is linkage of DGPS receiver and mobile phone. IM can transmit correction message passing RS-232 port and modem communication control. IM of base station is initialized RS-232 port and modem to move station for correction message transmission, IM waited response mode. IM of move station is initialized RS-232 port and modem, IM requests hand shaking to base station, completed connection establishment. Users are worked Differential surveying using receiving correction message between mobile phones.

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Improvement of Charge Transfer Efficiency of Dye-sensitized Solar Cells by Blocking Layer Coatings (차단막 코팅에 의한 염료 태양전지의 전하전송효율 개선에 관한 연구)

  • Choi, Woo-Jin;Kim, Kwang-Tae;Kwak, Dong-Joo;Sung, Youl-Moon
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.60 no.2
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    • pp.344-348
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    • 2011
  • A layer of $TiO_2$ thin film less than ~200nm in thickness, as a blocking layer, was deposited by 13.56 MHz radio frequency magnetron sputtering method directly onto the anode electrode to be isolated from the electrolyte in dye-sensitized solar cells (DSCs). This is to prevent the electrons from back-transferring from the electrode to the electrolyte ($I^-/{I_3}^-$). The presented DSCs were fabricated with working electrode of F:$SnO_2$(FTO) glass coated with blocking $TiO_2$ layer, dye-attached nanoporous $TiO_2$ layer, gel electrolyte and counter electrode of Pt-deposited FTO glass. The effects of blocking layer were studied with respect to impedance and conversion efficiency of the cells. The, electrochemical impedances of DSCs using this electrode were $R_1$: 13.9, $R_2$: 15.0, $R_3$: 10.9 and $R_h$: $82{\Omega}$. The $R_2$ impedance related by electron movement from nanoporous $TiO_2$ to TCO showed lower than that of normal DSCs. The photo-conversion efficiency of prepared DSCs was 5.97% ($V_{oc}$: 0.75V, $J_{sc}$: 10.5 mA/$cm^2$, ff: 0.75) and approximately 1% higher than general DSCs sample.

Annual Intensities (2016-2017) Analysis of Energy Use and CO2 Emission by End Use based on Measurements of Sample Apartment Units (표본건물 계측에 의한 공동주택 세대에서의 용도별 에너지사용량 및 CO2 배출량 연간 원단위 (2016 - 2017) 분석)

  • Jin, Hye-Sun;Lim, Han-Young;Lee, Soo-Jin;Kim, Sung-Im;Lim, Jae-Han;Song, Seung-Yeong
    • Journal of the Architectural Institute of Korea Structure & Construction
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    • v.34 no.7
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    • pp.43-52
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    • 2018
  • In this study, annual site and primary energy use intensities (EUIs) and CO2 emission intensities (CEIs) per area by end use were estimated based on the measurement data from June 2016 to May 2017 of 50 sample apartment units in Seoul. In addition, estimated site EUIs by end use were compared to the U.S. Residential Energy Consumption Survey (RECS) 2009 data. Site EUIs by end use were found to be in the order of heating > electric appliance > domestic hot water > cooking > lighting > cooling > air movement. In the case of primary EUIs and CEIs by end use, electric appliance was found to be the largest. As results of comparison with the RECS 2009 data, it was found that site EUIs were very similar for heating, domestic hot water and electric appliance, etc., but slightly different for cooling. The number of sample apartment units will continue to increase until 2020 (total number of samples 200) and intensities data by end use will be continuously updated through continuous collection of measurement data.

Effect of Artemisiae Argyi Folium Extract on Alcohol-Induced Gastritis (애엽(艾葉) 추출물이 알코올성 위염에 미치는 효과)

  • Lee, Jin A;Seo, Jeong Bok;Kim, Jin Young;Shin, Mi-Rae;Park, Hae-Jin;Roh, Seong-Soo
    • The Journal of Internal Korean Medicine
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    • v.43 no.4
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    • pp.738-750
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    • 2022
  • Objective: Alcohol is known to cause inflammation in the stomach by decreasing the protective substances of the gastric mucosa and increasing oxidative stress. The purpose of this study was to investigate the anti-inflammatory effect of Artemisiae Argyi Folium extract (AF) on alcohol-induced gastritis. Methods: The total polyphenol and flavonoid contents of AF were confirmed through an in vitro experiment. Radical scavenging activities were confirmed using DPPH and ABTS assays. In vivo experiments were conducted on mice divided into 5 groups (n=8): a normal group (Nor), an alcohol-induced gastritis group (Con), an alcohol-induced gastritis group administered 10 mg/kg sucralfate (SC), an alcohol-induced gastritis group administered 100 mg/kg AF (AFL), and an alcohol-induced gastritis group administered 200 mg/kg AF(AFH). The serum levels of reactive oxygen species (ROS) were determined, and protein expressions were confirmed in gastric tissues. Results: In alcohol-induced gastritis, AF alleviated damage to the gastric mucosa caused by alcohol. AF also decreased the serum ROS levels. Western blots showed that AF decreased the expression of NADPH oxidase and decreased the expression of the NF-κB pathway associated with inflammation. AF also decreased the expression of adhesion molecules and chemokine proteins, and increased the expression of anti-inflammatory proteins. Conclusions: AF not only reduced oxidative stress in alcohol-induced gastritis, but it also relieved gastric mucosal inflammation by regulating the expression of the NF-κB pathway.

Protective Effect of Cotoneaster mongolicus Pojark. Extract in HCl/ethanol-induced Gastritis Mice (Cotoneaster mongolicus Pojark. 추출물의 HCl/ethanol로 유발된 위염 mice에 대한 보호효과)

  • Choi, Jeong Won;Lee, Jin A;Shin, Mi-Rae;Park, Hae-jin;Roh, Seong-Soo
    • Korean Journal of Pharmacognosy
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    • v.53 no.3
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    • pp.153-161
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    • 2022
  • Cotoneaster mongolicus Pojark. (CM), in the family Rosaceae is an endemic plant to the Mongolian region (its name: Moнroл чapraй). In Mongolia, Cotoneaster species as a crude drug is mainly used for inflammatory diseases, diarrhea, and stomach indigestion. In this study, we evaluated the gastro-protective activity underlying mechanism of CM. For in vivo experiments, mice were divided into 5 groups; normal mice (Normal), gastritis mice (Control), gastritis mice treated with sucralfate 10 mg/kg (SC), gastritis mice treated with CM 100 mg/kg (CML), gastritis mice treated with CM 200 mg/kg (CMH). Gastritis was provoked by HCl/ethanol (60% ethanol in 150 mM HCl). After oral administration of each drug, HCl/ethanol was orally administered 90 mins later to induce gastritis. CM alleviated the damage to the gastric mucosa caused. As a result of confirming the expression of protein in gastric tissue through western blot, CM significantly reduced the expression of NF-κB activated due to gastritis. Also, it significantly modulated the Nrf2-Keap1 pathway. These results indicate that CM not only inhibits the nuclear metastasis of NF-𝛋B but also modulates the Nrf2-Keap1 pathway to relieve inflammation of the gastric mucosa.

Elemental Composition of the Soils using LIBS Laser Induced Breakdown Spectroscopy

  • Muhammad Aslam Khoso;Seher Saleem;Altaf H. Nizamani;Hussain Saleem;Abdul Majid Soomro;Waseem Ahmed Bhutto;Saifullah Jamali;Nek Muhammad Shaikh
    • International Journal of Computer Science & Network Security
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    • v.24 no.6
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    • pp.200-206
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    • 2024
  • Laser induced breakdown spectroscopy (LIBS) technique has been used for the elemental composition of the soils. In this technique, a high energy laser pulse is focused on a sample to produce plasma. From the spectroscopic analysis of such plasma plume, we have determined the different elements present in the soil. This technique is effective and rapid for the qualitative and quantitative analysis of all type of samples. In this work a Q-switched Nd: YAG laser operating with its fundamental mode (1064 nm laser wavelength), 5 nanosecond pulse width, and 10 Hz repetition rate was focused on soil samples using 10 cm quartz lens. The emission spectra of soil consist of Iron (Fe), Calcium (Ca), Titanium (Ti), Silicon (Si), Aluminum (Al), Magnesium (Mg), Manganese (Mn), Potassium (K), Nickel (Ni), Chromium (Cr), Copper (Cu), Mercury (Hg), Barium (Ba), Vanadium (V), Lead (Pb), Nitrogen (N), Scandium (Sc), Hydrogen (H), Strontium (Sr), and Lithium (Li) with different finger-prints of the transition lines. The maximum intensity of the transition lines was observed close to the surface of the sample and it was decreased along the axial direction of the plasma expansion due to the thermalization and the recombination process. We have also determined the plasma parameters such as electron temperature and the electron number density of the plasma using Boltzmann's plot method as well as the Stark broadening of the transition lines respectively. The electron temperature is estimated at 14611 °K, whereas the electron number density i.e. 4.1 × 1016 cm-3 lies close to the surface.