• 한국기계가공학회지
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• 제9권4호
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• pp.59-65
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• 2010

This paper presents the study on the contact stress analysis of a pair of mating spur gears during rotation. Contact stress analysis is performed between two spur gear teeth at different contact positions during rotation. An example is presented to investigate the variation of contact stress on a pair of mating gears with contact positions. The variation of contact stress during rotation is compared with the contact stress at lowest point of single tooth contact(LPSTC) and AGMA Equation for contact stress. The results show that contact stress varies along the contact position and gets maximum values in the beginning and end of the contact. In this study, the gear design considering the contact stress on a pair of mating gears is more severe than that of AGMA standard.

• 한국해양학회지
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• 제21권3호
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• pp.184-192
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• 1986

1982년 2월부터 1986년 2월까지 한국 연안역에서 출현한 부유성 규조류중 Thalassiosira속의 소형종에 대하여 주사전자현미경 등을 이용한 미세구조를 연구하 였다. 이 결과 Thalassiosira속 4종을 동정하여 기재하였으며, 그중에서 Thalassiosira weissfiogii, T. minina, 및 T. oestrupii var. venrickae 등 3종을 한국 산 미기록종으로 보고한다.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2015년도 제46회 하계학술대회
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• pp.790-791
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• 2015

본 논문에서는 Radial flux density($B_r$)를 고려하여 매입형 영구자석 동기 전동기(Interior Permanent Magnet Synchronous Motor, IPMSM)에서 진동, 소음 발생의 원인이 되는 코깅토크를 최적화하는 방법을 제시한다. Maxwell Stress Method에 의하면 토크는 $B_r$에 비례한다. 따라서 $B_r$과 토크의 상관관계를 이용하여 코깅토크를 저감시켰다. 코깅토크가 가장 큰 회전자의 위치에서 회전자 표면의 $B_r$을 확인한 후 에 노치(Notch)를 적용할 위치를 선정하였다. 그리고 제안한 방법이 매입형 영구자석 동기 전동기 모델에서 효과적으로 코깅토크를 저감시키는 것을 유한요소법을 통해 검증하였다.

• Journal of Pharmaceutical Investigation
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• 제5권4호
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• pp.24-31
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• 1975

This paper attempts to investigate the effect of proteolytic enzyme on the absorption and excretion of pyrazinamide. The rat small intestinal absorption of pyrazinamide in the presence of proteolytic enzyme such as chymotrypsin and compounding enzyme (chymotrypsin and trypsin) are increasingly absorbed, but in the trypsin are similar to that of control. Blood levels of pyrazinamide after rabbit's duodenum injection are significantly enhenced to correspond to 112-120% by proteolytic enzymes concentration respectively, but both on the high concentration of chymotrypsin and the low concentration of trypsin are insignificantly enhenced. Proteolytic enzymes do not give the effect on clearance of pyrazinamide. Proteolytic enzymes give the effect on absorption of pyrazinamide, but do not give the effect on excretion of pyrazinamide.

• Journal of Pharmaceutical Investigation
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• 제13권4호
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• pp.183-190
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• 1983

The interaction between probencid and nalidixic acid was studied pharmacokinetically in rabbits infused with or without acidic soiution (5% $NH_4Cl$). The results were as fellows. The blood level and the area under the blood concentration curve of nalidixic acid administered intravenously was elevated by coadministration of probenecid and more elevated in rabbits infused with acidic solution. Probenecid inhibited the urinary excretion of nalidixic acid in rabbits infused with adidic solution. Therefore, biolgcal half-life of nalidixic acid was prolonged by coadministration of probencid.

• Journal of Pharmaceutical Investigation
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• 제19권1호
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• pp.15-20
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• 1989

The displacement of protein bound sulfonamides (sulfisoxazole, sulfamethoxazole, sulfisomidine) by furosemide was investigated in bovine serum albumin by equilibrium dialysis method. Furosemide $(2{\times}10^{-4}M)$ in bovine serum albumin ($7.24{\times}10^{-5}$, $1.45{\times}10^{-4}$, $2.89{\times}10^{-4}M$). Sulfisoxa캐1e and furosemide were bound reversibly to bovine serum albumin and competitive for the same binding sites when administered together. Consequently, dosage regimen of sulfisoxazole should be adjusted carefully when sulfisoxazole is administered along with furosemide.

• 동의신경정신과학회지
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• 제20권2호
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• pp.177-186
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• 2009

Objectives : We investigated if korean traditional treatment and psychotherapy is effective in patients with depression and menopausal symptoms. Methods : We treated two patients with typical korean traditional medical treatment( Acupuncture, Giungoroen therapy(至言高論療法), Moxibustion ) and progressive muscle relaxation. Results : After treatment, the chief complaint and accompanying symptoms were subsided and improved. BDI score and Kupperman's index were decreased. Conclusions : We may conclude that korean traditional treatment and psychotherapy is effective in patients with depression and menopausal symptoms.

• 약학회지
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• 제11권3_4호
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• pp.17-21
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• 1967

At present, quarternary ammonium salts(cationic surfactant) and Tego compounds (amphoteric surfactant) are used as germicidal agent. In this paper, it was investigated whether their germicidal activities are influenced or not by some suspending agents which are added to them 0.005% benzalkonium chloride aq. solution and 0.05% dodecyl diaminoethyl glycine aq. solution sterilized respectively against Staphylococcus aureus and Escherichia coli within a minute. The solutions aded acacia, carboxymethyl cellulose, sodium alginate solutions to make to 0.005% to above surfactants solution decreased the germicidal activity, not being sterilized bacteria for more than 2 hours however, the solutions decreased the germicidal activity by addition of suspending agents such as acacia, carboxymethyl cellose, sodium alginate and bacteria were survival for more than 2 hrs, 0.05% of benzalkonium chloride and 0.1% dodecyl diaminoethyl glycine respectively would be sterilized within 10 minutes, when added to 5% suspending agents. This result show that bactericidal action of dodecyl diaminoethyl glycine is affected by suspending agents less than that of benzalkonium chloride.

• 한국해양학회지
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• 제22권3호
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• pp.179-190
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• 1987

1983년 9월부터 1987년 3월까지 韓國沿岸域에서 출현한 浮游性 주조류 중 Thalassiosira 屬의 소형종에 대하여 走査電氣顯微鏡을 이용하여 微細構造를 연구하 였다. 第2부로서 Thalassiosira aestivalis, T.allenii, T.binata, T. Conferta, T. pacifica 및 T. rotula 등 6종을 同定.記載하였으며, 이중 Thalassiosira allenii, T.binata와 T. Conferta는 韓國産 未記錄種으로 보고 한다.

• Journal of Pharmaceutical Investigation
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• 제9권2호
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• pp.1-10
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• 1979

The purpose of this paper was to investigate the bioavailability of oxytetracycline in pathological rats and rabbits pretreated with carbon tetrachloride and mercuric chloride. The results are as follows: The blood level of oxytetracycline administered orally was mostly decreased significantly in rabbits damaged kidney and liver, and in rabbits severely damaged kidney, the blood level of oxytetracycline was not significant at 4 to 6 hours. Urinary clearance of oxytetracycline in rabbits severely damaged kidney was inhibited at 5 to 6 hours but in rabbits damaged liver. Hepatic clearance of oxytetracycline was accelerated in rabbits damaged kidney but in rabbits damaged liver. AUC of oxytetracycline orally administered in rabbits damaged liver and kidney was largely decreased. The absorption of oxytetracycline was decreased in rats damaged liver and kidney as compared with that of normal rats. Especially, absorption of oxytetracycline in rats damaged liver was more decreased than that of rats damaged kidney. The absorption of oxytetracycline was inhibited by combinated administration of carbon tetrachloride and mercuric chloride.