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윤영준,이명화,신학수,정현민,조정현,소광섭,Yoon Young-Jun,Lee Myeong-Hwa,Shin Hak-Soo,Johng Hyun-Min,Cho Johng-Hyun,Soh Kwang-Sup 대한예방한의학회 1999 대한예방한의학회지 Vol.3 No.1
압력을 증가시켜가며 맥파를 측정하여 맥파의 진동수와 푸리에 진폭이 가해준 압력에 따라 어떠한 양상을 보이는지 조사하였다. 맥파의 기본 진동수는 압력에 따른 변화를 거의 보이지 않았으며, 푸리에 진폭은 개인의 체질에 따라 몇 가지 유형으로 분류될 수 있음을 보였다. 이 유형들을 다시 푸리에 진폭이 최고점에 이를 때의 압력의 크기와 최고점에서의 상태를 유지할 수 있는 압력의 범위에 따라 맥상의 여러 형태와 연관지을 수 있음을 보였다. We investigate how the frequency and the Fourier amplitude of the pulse wave behave as the contact pressure of the sensor on the skin increases. The results are that the fundamental frequency of the pulse wave hardly changes and the Fourier amplitude has several different patterns depending on the personal constitution, and its patterns are classified. We also show that the classified patterns can be related to the different pulse types by the magnitude of the pressure required to reach the maximum Fourier amplitude and the range of the pressure at which the maximum Fourier amplitude is maintained.
( Jang-hyun Kang ),( Johng-hwa Ahn ) 한국폐기물자원순환학회(구 한국폐기물학회) 2019 ISSE 초록집 Vol.2019 No.-
This study investigated the effects of cobalt (Co) (0-5 mg/L) and iron (Fe) (0-100 mg/L) supplementations on the mesophilic (MD) and thermophilic (TD) anaerobic digestions (AD) of high-solid food waste in laboratory-scale batch anaerobic digesters. The maximum chemical oxygen demand (COD) removal efficiency was 94.6% (3.2% increase compared to control) with 0.05 mg Co/L (MD<sub>Co0.05</sub>) and 85.8% (8.6% increase compared to control) in TD with 0.5 mg Co/L (TD<sub>Co0.5</sub>). The maximum COD removal efficiency was 93.8% (8.9% increase compared to control) in MD<sub>Fe5</sub> and 94.6% (4.6% increase compared to control) in TD<sub>Fe100</sub>. The CH<sub>4</sub> content in biogas was 54.1-58.6% for MD<sub>Co</sub>, 55.7-64.6% for TD<sub>Co</sub>, 53.8-58.8 for MD<sub>Fe</sub>, and 57.5-66.9% for TD<sub>Fe</sub>. Regardless of the concentration of trace metals, TD had a higher CH<sub>4</sub> content than MD in all reactors. The CH<sub>4</sub> yield range was 0.22-0.26 Nm<sup>3</sup> CH<sub>4</sub>/kg COD<sub>removed</sub> in MD<sub>Co</sub>, 0.28-0.30 Nm<sup>3</sup> CH<sub>4</sub>/kg COD<sub>removed</sub> in TD<sub>Co</sub>, 0.29-0.34 Nm<sup>3</sup> CH<sub>4</sub>/kg COD<sub>removed</sub> in MD<sub>Fe</sub>, and 0.27- 0.32 Nm<sup>3</sup> CH<sub>4</sub>/kg COD<sub>removed</sub> in TD<sub>Fe</sub>. The maximum cumulative biogas production was 2,940 mL for MD<sub>Co0.01</sub> (7.4% increase compared to control), 3,096 mL for TD<sub>Co0.5</sub> (13.0% increase compared to control), 3,125 mL for MD<sub>Fe5</sub> (2.4% increase compared to control), and 2,985 mL for TD<sub>Fe100</sub> (18.7% increase compared to control). Final pH values were 7.7-8.2 in all MDs and 8.0-8.3 in all TDs, which presented that pH was higher in TD than in MD. The total volatile fatty acid value was lowest in MD<sub>Co0.01</sub> with 75 mg HAc/L among all digesters. Overall, the optimal range of trace metals concentration in this study was 0.01-0.05 mg/L for MD<sub>Co</sub>, 0.05-0.5 mg/L for TD<sub>Co</sub>, 5-10 mg/L for MD<sub>Fe</sub>, and 100 mg/L for TD<sub>Fe</sub>. During anaerobic conversion of food waste, the availability or lack of Co and Fe has a central function in maintaining a stable and an efficient conversion process.
Calcium glycerophosphate와 Flavonoid 및 Vitamin - E 배합세치제의 치면세균막제거효과 및 구취제거효과에 관한 실용실험적 연구
김종배,서현석,진보형,송연희,신승철,이건수 대한구강보건학회 1991 大韓口腔保健學會誌 Vol.15 No.1
In order to evaluate the effect of a therapeutic toothpaste containing calcium glycerophosphate flavonoid and vitamin-E on the inhibition of dental plaque formation, the authors had examined the oral status of 96 students aged twentieth, divided into two groups, 48 in one control group were given with cosmetic toothpaste, 48 students in the other experimental group with therapeutic toothpaste containing CGP, Flavonoid, Vitamin-E. At the same time, all students were given with straight handled medium bristled toothbrush and directed to brush teeth with toothpaste and toothbrush offered. The patient hygiene performance were repeatedly examined in the 7th day, and 14th day. On the other hands, to evaluate the malodor reducing efficiency, the authors and analysed the volatile sulfur compounds from the breath after ingestion of garlic powder. 5 adults aged twentieth were examined. To obtained adequate data, expirating breath were collected into sampling loop, after ingestion of garlic powder, the subjects cleansed the oral cavity by one of the designated methods and reevaluated at 2, 7, 12 and 17 minutes after ingestion of garlic powder. Gas chromatographic technic was employed for the evaluation of volatile sulfur compounds in mouth air. The percentage change in VSC concentration of air samples were calculated in relation to values of it after ingestion of garlic powder immediately. Thereafter, the data was compared statistically and discussed. The obtained results were as follows; 1. Calcium glycerophosphate, flavonoid and vitamin-E containing toothpaste inhibited plaque formation more effectively than control cosmetic toothpaste(p<0.05). 2. Methyl mercaptan and allyl mercaptan were detected in the breath after ingestion of garlic powder. 3. Calcium glycerophosphate, flavonoid and vitamin-E containing toothpaste reduced more methyl mercaptan than control cosmetic toothpaste(p<0.05). 4. Calcium glycerophosphate, flavonoid and vitamin-E containing toothpaste reduced more allyl mercaptan than control cosmetic toothpaste(p<0.05) 5. Therapeutic toothpaste containing calcium glycerophosphate, flavonoid and vitamin-E increased the effects of plaque formation inhibition & malodor elimination.
Triclosan 과 Pyrophosphate 및 Tranexamic acid 를 배합한 세치제의 치주질환원인균과 구취유발원인균에 대한 항균효과에 관한 연구
김종배,문혁수,백대일,윤정원,정세환,신미정,이기현 대한구강보건학회 1998 大韓口腔保健學會誌 Vol.22 No.3
The antimicrobial effects of dentifrice containing triclosan, pyrophosphate and tranexamic acid against the pathogens of periodontal disease and halitosis such as Streptococcus sanguis, Actinomyces viscosus, Candida albicans, Actinobacillus actinomycetemcomitans, Capnocytophaga ochracea, Fusobacterium nucleatum, Prevotela intermedius, Phopyromonas gingivalis were evaluated with the agar dilution and paper disc methods. The results obtained were as follows: 1. Both the experimental dentifrice containing triclosan, pyrophosphate and tranexamic acid and the control dentifrice showed the antimicrobial activities on all the microorganisms tested. 2. The experimental dentifrice containing triclosan, pyrophosphate and tranexamic acid showed more effective antimicrobial activities on Actinobacillus actinomycetemcomitans, Capnocytophaga ochracea, Phopyromonas gingivalis, relative to the control dentifrice.