• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 하계종합학술대회 논문집 Ⅳ
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• pp.2208-2211
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• 2003

In this paper, a variable bandwidth filter(VBF) is realized with the purpose of the decomposition of speech signals with time-varying instantaneous of frequencies. The proposed VBF can extract AM-FM components of a speech signal whose time-frequency representations(TFRs) are not overlapped in time-frequency domain

• Journal of Acupuncture Research
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• 제29권2호
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• pp.107-113
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• 2012

Objectives : The purpose of this study was to evaluate the effects of $Sa-am$ acupuncture treatment on an interstitial cystitis patient. Methods : A 51 year-old woman who diagnosed as interstitial cystitis, was enrolled in this study. The clinical data was analyzed on a patient with interstitial cystitis due to $Shinheo$(腎虛). The patient had visited Korean medicine department of Yangsan public health care center, and was treated with a $Sa-am$ acupuncture($Sinjeongkyeok$) for 4 weeks. Results : After 4 weeks of $Sa-am$ acupunture treatment($Sinjeongkyeok$), improvement was seen in the subsection of the international prostate symptom score and the part of qualiveen questionnaire score. Conclusions : This clinical case indicates that acupuncture treatment is significantly effective in treatment of a interstitial cystitis.

• Journal of Microbiology
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• 제33권2호
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• pp.165-170
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• 1995

The 356 amino acid long lambda integrase protein of bacteriophage .lambda. constains two autonomous DNA binding domains with distinct sequence specificities. The amino terminal domain of integrase is implicated to bind to the arm-type sequences and the carboxyl domain interacts with the coretype sequencess. As a first step to understand the molecular mechanism of the integrase-DNA interaction at the arm-type site, the int(am)94 gene carrying an amber mutation at the 94th codon of the int was cloned under the control of the P$\_$tac/ promoter and the lacI$\_$q/ gene. The Int(am)94 mutant protein of amino terminal 93 amino acid residues can be produced at high level from a suppressor free strain harboring the plasmid pInt(am)94. The arm-type binding activity of Int(am)94 were measured in vivo and in vitro. A comparison of the arm-type binding properties of the wild-type integrase and the truncated Int(am)94 mutant indicated that the truncated fragment containing 93 amino acid residues carry all the determinants for DNA binding at the arm-type sites.

• The Korean Journal of Ecology
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• 제27권3호
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• pp.179-184
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• 2004

The diversity of arbuscular mycorrhizal fungi (AM) was investigated in cultivated and natural fold sites or chungbuk, Korea. soils were collected from rhizosphere or Sorghum bicolor, Fagopyrum esculentum and Glycine max in cultivated sites, and of Miscanthus sinensis, Glycine soja and Lespedeza cuneata in natural sites. Total 20 species of Glomalean fungi were found in this study. Species richness, species diversity and density of AM fungi were significantly lower in the arable sites. While only AM fungal spores belong to Glomus and Acaulospora were found in arable fold sites, more diverse fungal spores including Gigasporaceae were found in natural grasslands. AM fungal spore composition did not significantly differ among crop plant species. Results suggest that the agricultural practices were significantly influenced on AM fungal community structures and mycorrhizal developments.

• 조명전기설비학회논문지
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• 제18권5호
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• pp.151-155
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• 2004

본 논문은 밀리미터파 OFDM 무선 랜 시스템의 ACPR(Adjacent Channel Power Ratio)영향을 모델링을 통하여 분석하였다. 전력 증폭기, 시스템 시뮬레이션기술을 분석하기 위하여 AM-to-PM 모델링을 사용하였다. 전력 증폭기 ACPR은 OFDM 변조(modulation)를 이용하여 시뮬레이션하였다. 증폭기의 back-off 값은 요구되는 ACPR을 만족시키며, ACPR감소치는 모델링한 AM-to-PM의 왜곡과 측정한 AM-to-PM의 왜곡을 이용하여 예측이 가능하였다.

• Advances in Traditional Medicine
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• 제7권5호
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• pp.569-572
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• 2008

The root of Astragalus membranaceous (AM) has been used to treat edema and arthritis in the traditional Korean medicine. To elucidate the anti-inflammatory and anti-nociceptive effects of ethanol extract of AM, the carrageenan-induced paw edema using a plethysmometer and thermal hypersensitivity using the plantar test were measured. Ibuprofen was used as a control drug. Pretreatment with AM (400 mg/kg p.o.) significantly reduced paw edema, compared to the carrageenan-treated rats. In the plantar test, the thermal withdrawal latency in AM-treated group was significantly increased than the carrageenan-treated group. The results indicate that AM could have be the anti-inflammatory and anti-nociceptive properties.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2002년도 추계학술대회 논문집 Vol.15
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• pp.557-561
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• 2002

본 논문에서는 전자식 형광등의 직류구동과 AM 변조시 빛의 주파수 특성에 관하여 다루고 있다. 전자식 형광등을 구동하는 안정기 회로는 상용전원을 직류로 정류시켜 고주파로 변환하여 형광등을 구동시킨다. 형광동의 구동에 사용되는 안정기 회로의 내부 평활 컨덴서의 유.무와 각각 공급되는 전원을 상용전원인 경우, 상용전원을 정류한 경우, 상용전원을 정류하고 정현파를 AM 변조한 경우에 대해서 측정하였으며, 변조하여 입력되어진 정현파가 빛을 통해서 송신되는 것을 확인할 수가 있었다.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 1995년도 춘계학술발표회논문집(2)
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• pp.853-858
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• 1995

$^{152}$EU, $^{241}$Am 및 $^{241}$Np를 선정하여 추출제 di-(2-ethylhexyl)phosphoric acid (DEHPA)로 이들 세가지 핵종의 상호 분리공정에 대해 연구하였다. 추출공정에서 질산농도는 0.IM이고 추출 제DEHPA/n-dodecane 농도가 IM 일때, $^{152}$Eu 및 $^{241}$Am, $^{241}$Np 핵종 모두 99.9% 이상 추출되었다. $^{241}$Am 핵종의 역추출을 위한 제 1 역추출공정에서 역추출제인 0.05M di-ethylenetriamine pentaacetic acid (DTPA)와 1.5M 젖산 (lactic acid) 혼합용액의 pH가 3.6 일때 $^{152}$Eu과 $^{241}$Am의 상호분리비와 역추출율이 가장 좋았다. $^{152}$Eu의 역추출을 위한 제 2 역추출단계에서 역추출제인 질산용액의 최적농도는 6M이며, 이때 $^{152}$Eu은 99%가 역추출되었다.$^{241}$Np 핵종의 역추출을 위한 제 3 역추출공정에서 역추출제는 0.5M 옥살산이며, 이때 $^{241}$Np은 92%가 역추출되었다.

• 혜화의학회지
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• 제13권2호
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• pp.259-265
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• 2004

Objective; This study was designed to investigate the effect of Sa-am acupuncture and Arctii Fructus water extract on Post-herpetic Neuralgia. Method: We have treated them with acupuncture treatment of Sa-am acupuncture and Arctii Fructus water extract and evaluated the effect by Pain Rating Score(P.R.S.) and Visual Analogue Scale(V.A.S.) scale. Result: Before theraphy, the grades of Song's scale were P.R.S. 80 and V.A.S. 100, Kim's sclae's P.R.S. 77 and V.A.S. 100. After theraphy, the grades of song's scale were P.R.S. 5 and V.A.S. 10, Kim's scales's P.R.S. 10 and V.A.S. 10 Conclusion: The treatment of Sa-am-acupuncture and Arctii Fructus water extract on Post-herpetic Neuralgia was effective and will be attempted to the patients with it.

• 음성과학
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• 제8권4호
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• pp.45-58
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• 2001

Modulated components of a speech signal are frequently used for speech coding, speech recognition, and speech synthesis. Time-frequency representation (TFR) reveals some information about instantaneous frequency, instantaneous bandwidth and boundary of each component of the considering speech signal. In many cases, the extraction of AM-FM components corresponding to instantaneous frequencies is difficult since the Fourier spectra of the components with time-varying instantaneous frequency are overlapped each other in Fourier frequency domain. In this paper, an efficient method decomposing speech signal into AM-FM components is proposed. A variable bandwidth filter is developed for the decomposition of speech signals with time-varying instantaneous frequencies. The variable bandwidth filter can extract AM-FM components of a speech signal whose TFRs are not overlapped in timefrequency domain. Also, amplitude and instantaneous frequency of the decomposed components are estimated by using Hilbert transform.