• Title/Summary/Keyword: 티트리

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Telemetry Standard 106-17 LDPC Decoder Design Using HLS (HLS를 이용한 텔레메트리 표준 106-17 LDPC 복호기 설계)

  • Gu, Young Mo;Kim, Seongjong;Kim, Bokki
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.49 no.4
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    • pp.335-342
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    • 2021
  • By using HLS when developing a communication system FPGA, HDL code can be automatically generated from a little modified C/C++ source code used for performance verification, which has the advantage of shortening the development period. In this paper, a method of designing a telemetry standard 106-17 LDPC decoder in C language is proposed using Xilinx's Vivado HLS, and by synthesizing Spartan-7 and Kintex-7 as target devices, throughput and FPGA utilization rate was compared.

Antimicrobial Effects of Essential Oils for Multidrug-Resistant Acinetobacter baumanii (다제내성 아시네토박터 바우마니의 에센셜 오일에 대한 항균효과)

  • Park, Chang-Eun;Kwon, Pil Seung
    • Korean Journal of Clinical Laboratory Science
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    • v.50 no.4
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    • pp.431-437
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    • 2018
  • Acinetobacter baumannii is categorized as a red alert pathogen that is increasingly associated with a high mortality rate in infected patients because of its resistance to extensive antibiotics. This study evaluated the antibacterial activities of some essential oils (tee tree, rosemary, and lavender oils) against 18 clinical isolates of multidrug-resistant A. baumannii (MRAB). The carbapenemase screening Hodge test showed that all 20 strains of A. baumannii were resistant to imipenem. The identification of multidrug-resistant microbes was carried out using the VITEK system. The antimicrobial activity of essential oils was tested by a disk diffusion method against MRAB. In the disk diffusion method, tea tree showed the largest increase in inhibition size compared to lavender oil, and rosemary had no antibacterial effect. These results proved the antimicrobial effect of multidrug resistance A. baumannii. Tee tree oil would be a useful alternative natural product for the treatment and prevention of most common human pathogens and MRAB infections. This is expected to be used as an antimicrobial agent, such as hand disinfectant using natural essential oil in the future.

Telemetry Standard 106-17 LDPC Encoder Design Using HLS (HLS를 이용한 텔레메트리 표준 106-17 LDPC 부호기 설계)

  • Gu, Young Mo;Lee, Woonmoon;Kim, Bokki
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.48 no.10
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    • pp.831-835
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    • 2020
  • By automatically generating HDL codes from C/C++ source codes, HLS makes it possible to shorten FPGA system developing period through easy timing control and structure change. We designed LDPC encoder for telemetry standard 106-17 with Xilinx Vivado HLS and showed hardware structure can be easily adapted for different purposes through minor C code modification. Synthesis results targeting Spartan-7 xc7s100 device are presented for throughput and hardware complexity comparison.

Insecticidal toxicities of essential oils extracted seven plants against Ricania sp. nymphs and adults (돌발 해충, 갈색날개매미충에 대한 7종 식물체 오일성분의 살충)

  • Jeon, Ye-Jin;Choi, Byeong-Ryeol;Lee, Hoi-Seon
    • Journal of Applied Biological Chemistry
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    • v.59 no.3
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    • pp.243-245
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    • 2016
  • The insecticidal toxicities of seven essential oils against Ricania sp. nymph and adults, newly recorded pest, were evaluated using leaf-dipping and spray methods. At 72 h exposure time, the $LC_{50}$ values of the essential oils of Artemisia vulgaris, Anethum graveolens, Citrus paradisi, Melaleuca alternifolia, Melaleuca leucadendron, Neroli bigarade and Tagetes erecta were 251.02, 387.31, 286.21, 353.54, 275.64, 424.55, $165.68mg/cm^2$ when using the leaf dipping method against Ricania sp. nymphs, and 278.31, 402.11, 306.11, 379.64, 298.22, 459.56, $183.21mg/cm^2$ when using the spray method against Ricania sp. adults, respectively. These results indicate that the essential oil of the Tagetes erecta can be potentially used as new natural insecticidal agents against Ricania sp. nymph and adults.

Major Compound Analysis and Assessment of Natural Essential Oil on Anti-Oxidative and Anti-Microbial Effects (천연 에센셜 오일의 주요 구성물질 분석과 항산화 및 항균 효과에 관한 연구)

  • Shin, Yu-Hyeon;Kim, Hyun-Jung;Lee, Jin-Young;Cho, Young-Je;An, Bong-Jeun
    • Journal of Life Science
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    • v.22 no.10
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    • pp.1344-1351
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    • 2012
  • We studied the physical, chemical, biological, and antimicrobial effects of eight types of essential oils used in the cosmetics industry: lavender, tea tree, rosemary, juniper berry, Chamaecyparis obtusa, cypress, cedar wood, and pine. Lavender oil had a linalyl acetate (an ester chemical compound) content of 48% and radical scavenging activity of 22.36% at 5,000 ppm. Tea tree oil had radical scavenging activity of 43.94% at 5,000 ppm and antimicrobial activity against S. aureus, S. epidermidis, S. mutans, and C. albicans in each 6, 3.5, 6.5, and 5 mm, respectively. Chamaecyparis obtusa oil had the highest acidity (pH 2.64) compared with the other oils, and sesquiterpene compounds were found to have 19.20%. Cedar wood oil had the highest specific gravity and refractive index compared to the other oils and had a sesquiterpene content of 99.73%. The radical scavenging activity of cedar wood essential oil exceeded 39.68% at 5,000 ppm. The clear zone, indicating antimicrobial activity against P. acnes, P. ovale, and C. albicans, was 3.5, 6, and 6 mm, respectively, at a concentration of 1% cedar wood oil. Results showed that with a high sesquiterpene content, the antioxidant effect was generally, but not always, high, suggesting that this is determined according to composition of the compound rather than presence of each antioxidant. The results indicate that antimicrobial activity is determined by the existence of each antimicrobial ingredient rather than terpene composition.

Improvement of Service Location Discovery and Download Protocol in Wide Area Network (광역망에서의 서비스 위치 탐색 및 다운로드 프로토콜의 개선)

  • Huh, Duck-Haing;Kim, Han-Kyoung
    • Journal of Internet Computing and Services
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    • v.12 no.2
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    • pp.55-62
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    • 2011
  • To make service location protocol of IETF which is to be used in the wide area network to discover the location of desired service when computing resources are connected to the network, and to support simless connectivity between wired and wireless network in service viewpoint, to support the diversity trend of service agents in WIF, it needs to improve SLP, so as to add Liaison Agent and Forwarding Agent with FAAdvert message that is to communicate in between those entities. LA entity confirms the location of service located in wide area network, and FA transfers service information. The usage of existing messages such as SrvRqst, SrvRply, AttrRqst, AttrRply, DAAdvert, SrvReg, SrvAck, SrvDeReg is same as ever in wide area service network. The behaviors of improved protocol is modeled into petri-net and prove that it is free of deadlock and live-lock by execution of the model.

Anti-photoaging Effects of Fermented Soybean (Bio-Peptone®) (대두 발효물(Bio-Peptone®)의 광노화 억제 효과)

  • Kim, Eun Ju;Shim, Myeong Kuk;Jeong, A Ram;Kim, Ae Jung
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.45 no.1
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    • pp.27-36
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    • 2019
  • Soybean (Glycine max), as one of the foods with high plant proteins, contains a large amount of bioactive compounds and known to be effective in cardiovascular disease and obesity as well as in improving skin condition. The purpose of this study was to investigate the anti-photoaging effects of soybean fermented with Lactobacillus Rhamnosus ($Bio-Peptone^{(R)}$) by assessment of cytotoxicity against UVB, collagen synthesis after UVB-irradiation, tyrosinase activity, and melanin synthesis. Results showed that $Bio-Peptone^{(R)}$ protected skin fibroblasts against UVB-induced cytotoxicity and increased type I collagen synthesis. Furthermore, $Bio-Peptone^{(R)}$ significantly inhibited tyrosinase activity and reduced melanin contents. This study suggests that $Bio-Peptone^{(R)}$ has protective effects against UVB-induced skin damage. Thus, it is concluded that $Bio-Peptone^{(R)}$ is able to prevent skin damage against UVB and thus acts as anti-photoaging materials by protecting skin forming wrinkles and skin pigments.

Effects of A-solution on Halitosis and Oral Status in Preoperative NPO Patients (A-solution을 이용한 구강 가글링이 수술 전 금식 환자의 구취와 구강 상태에 미치는 효과)

  • Song, Ji-Ah;Hur, Myung-Haeng
    • Journal of Korean Academy of Nursing
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    • v.42 no.3
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    • pp.405-413
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    • 2012
  • Purpose: The aim of this study was to explore the effects of A-solution on halitosis and oral status in preoperative NPO patients. Methods: A nonequivalent control group, non-synchronized pretest-posttest design was used in this study. The participants in this study were 66 patients who were admitted for gynecologic surgery. The experimental treatment was to give oral gargling with A-solution, blended essential oils and diluted with distilled water. To identify the experimental treatment effects, halitosis, salivary pH, and oral status were measured by a portable halitosis detector, visual analogue scale, Bromo Thymol Blue (BTB), Bromo Cresol Purple (BCP) test paper and oral assessment guide. Data were analyzed using $X^2$-test, t-test with PASW 18.0 version. Results: Participants were homogeneous before experimental treatment. Objective halitosis in the experimental group, measured by a portable halitosis detector (t=-8.34, p<.001) was significantly lower than the control group. Subjective halitosis was significantly lower in the experimental group (t=-9.29, p<.001). Salivary pH was significantly different between two groups (t=8.81, p<.001). Oral status was significantly better in the experimental group (t=-13.31, p<.001). Conclusion: These findings indicate that oral gargling using A-solution is effective in reducing patient halitosis, and improving oral status.

The Effects of Teatree Oil Gargling on Oral Cavity Micro-Organism Growth and Perceived Discomfort of Patient Receiving Chemotherapy (티트리 오일을 이용한 구강함수가 화학요법을 받는 암 환자의 구강상태와 불편감 및 구강세균집락에 미치는 효과)

  • Kim, Nam Cho;Kim, Hee Jung
    • Korean Journal of Adult Nursing
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    • v.17 no.2
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    • pp.276-286
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    • 2005
  • Purpose: The study is to investigate the effects of tea tree oil gargling on oral cavity micro-organism growth and on the perceived discomfort of patients receiving chemotherapy. Methods: A nonequivalent control group non-synchronized design was used to determine the effects of tea tree oil gargling on oral cavity for 20 second after using it for one week, twice a day. The sample consisted of two groups of patients receiving chemotherapy : 19 patients in experimental and 20 patients in control group. The instruments used in the study were Oral Assessment Guide(OAG), a measure of perceived symptoms on oral cavity, and a test of oral mucosal micro-organism culture. The data were analyzed using chi-square test, repeated measure of ANOVA, and Pearson correlation coefficient. Results: There was no significant difference between the two groups in micro-organism culture test of oral mucosa. The experimental group showed a lower number and fewer kinds of micro-organisms than the control group. Conclusion: It is considered that use of tea tree oil is effective in infection control of the oral cavity.

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A Study on Efficiency of Essential Oil for Dandruff Symptoms Relief - Focused on Tea tree oil - (비듬 증상 완화를 위한 에션셜 오일의 유효성 연구 - 티트리 오일을 중심으로 -)

  • Park, Eun-Ha
    • Journal of the Korean Society of Fashion and Beauty
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    • v.3 no.3 s.3
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    • pp.31-40
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    • 2005
  • The reason that aromatherapy began to draw attention again as the alternative therapy is because the essential oils that are used for aromatherapy not only allow the human body to maintain homeostasis but also have an effect on curing a mental feeling of fatigue and because these efficacies and effects are proceeding with being proved scientifically. Also, with coming to be high in a voice of concern about severally side effects that the modern medicine and the synthetic chemistry have, the aromatherapy came to be paid attention as the replacement therapy that can substitute for and supplement this. In particular, at the time of requiring a study on a substance to substitute for this after having been announced in Japan for 1998 a risk of Zincpyrithione that is being used as a component of dandruff treatment, it is thought that the aroma oil that was known for having an anti-dandruff effect has a merit of being easy in a user's access, thus it will be effective in curing the symptom of dandruff. Accordingly, this study conducted the following experiment in a bid to examine whether the aroma oil has the anti-microbial effect on the actual malassezia. First of all, it measured the minimum concentration of aroma oil in which the growth of malassezia is inhibited, by carrying out MIC(Minimum Inhibition Concentration) test in terms of anti-microbial activity against Malassezia furfur KCTC 7744 while using oils of Patchouli, Rosemary, Lavender, and Tea tree among aroma oils that are being used for dandruff treatment. As a result of that, Tea tree oil has the most excellent anti-microbial activity, and the measurement result of anti-microbial activity was shown in order of Lavender oil>Rosemary oil>Patchouli oil. Next, it carried out the is actually eased by applying Tea tree oil directly to the scalp of dandruff. In consequence of the experiment, the massage of Tea tree oil indicated the result of relieving the symptoms of dandruff such as scale, itch, pain, inflammation, and sebum, and among these symptoms of dandruff, it was shown to be most effective in easing itch. Especially, this clinical experiment was indicated that the massage of Tea tree oil has the most effect on relieving itch of targets with a dry-skin type who had no experience of dandruff treatment.

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