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진행된 HIV 감염 환자에서 십이지장의 미란성 병변으로 발현한 Mycobacterium genavense 감염 1예
진상만,박종선,김홍빈,오명돈,최강원,김희연,국윤호,김남중 대한감염학회 2007 감염과 화학요법 Vol.39 No.4
Mycobacterium genauense는 최근에 알려진 미코박테륨으로서, 식욕 부진, 체중 감소, 설사, 림프절 병증 등 파종성 Myocobacterium avium-intracellulare complex 감염과 유사한 임상상을 보이며, 위장관 침범을 잘 하는 것으로 알려져 있으나 아직 국내에서 증례는 보고된 바가 없다. 저자들은 진행된 HIV 감염 환자에서 십이지장의 미란성 병변으로 발현한 Mycobacterium genavense 감염 1예를 경험하였기에 문헌 고찰과 함께 보고하는 바이다. 환자는 상복부 동통과 발열, 설사로 내원하였다. 십이지장의 미란성 병변에서 시행한 조직검사에서 항산균이 가득 차있는 거품세포가 관찰되었으며, 이 검체에서 16S rRNA 유전자의 중합연쇄반응 검사를 시행하여 Mycobacterium genavense를 확인하였다. Mycobacterium genavense, first identified in 1990, is known as a pathogen that mimics disseminated Myocobacterium avium-intracellulare complex (MAC) infection with particular propensity for the gastrointestinal tract. In Korea, no case with the organism has been reported. Herein we report a case of Mycobacterium genavense infection that manifested with erosive lesion of duodenum in a patient with acquired immune deficiency syndrome. The patient presented with epigastric pain and fever, diarrhea. Duodenal biopsy showed histiocytic infiltration with numerous acid-fast bacilli. Identification of the mycobacterial isolate by the polymerase chain reaction restriction analysis of 16S rRNA gene revealed Mycobacterium genavense.
간이식 환자에서 발생한 Aspergillus fumigatus에 의한 고관절염 1예
김탁,이상록,조오현,박기호,오련,이상오,김양수,우준희,김미나,최상호 대한감염학회 2008 감염과 화학요법 Vol.40 No.3
저자들은 간이식을 받은 환자에서 조직 배양 검사를 통하여 진단된 A. fumigatus에 의한 화농성 고관절염을 경험하였기에, 문헌 고찰과 함께 보고하는 바이다. Septic arthritis is an uncommon finding of invasive Aspergillosis. It can be caused by direct inoculation, Post-surgical infection, and hematogenous spread. Articular aspergillosis often involves the knee. A 49-year-o1d man who received a liver transplant in China on two months ago, due to liver cirrhosis caused by hepatitis B virus was admitted because of left side hip pain. Hip MRI showed joint effusion and bony destruction of the left hip and acetabulum. Incision and drainage was done and Aspergillus fumigatus was isolated from the resected tissue. After eight weeks of amphotericin B therapy, total hip replacement arthroplasty was done. Oral itraconazole 400mg/day was prescribed for six months after operation. The patient is now doing well without physical restriction.
Optimal Design of Piecewise Linear Companding Transforms for PAPR Reduction in OFDM Systems
( Sana Mazahir ),( Shahzad Amin Sheikh ) 한국인터넷정보학회 2016 KSII Transactions on Internet and Information Syst Vol.10 No.1
Orthogonal frequency division multiplexing (OFDM) signals suffer from the problem of large peak-to-average power ratio (PAPR) which complicates the design of the analog front-end of the system. Companding is a well-known PAPR reduction technique that reduces the PAPR by transforming the signal amplitude using a deterministic function. In this paper, a novel piecewise linear companding transform is proposed. The design criteria for the proposed transform is developed by investigating the relationships between the compander and decompander`s profile and parameters with the system`s performance metrics. Using analysis and simulations, we relate the companding parameters with the bit error rate (BER), out-of-band interference (OBI), amount of companding noise, computational complexity and average power. Based on a set of criteria developed thereof, we formulate the design of the proposed transform. The main aim is to preserve the signal`s attributes as much as possible for a predetermined amount of PAPR reduction. Simulations are carried out to evaluate and compare the proposed scheme with the existing companding transforms to demonstrate the enhancement in PAPR, BER and OBI performances.
Numerical modeling of non-capacity model for sediment transport by central upwind scheme
Sanae Jelti,Ayoub Charhabil,Jalila El Ghordaf 한국전산응용수학회 2023 Journal of applied mathematics & informatics Vol.41 No.1
This work deals with the numerical modeling of dam-break flow over erodible bed. The mathematical model consists of the shallow water equations, the transport diffusion and the bed morphology change equations. The system is solved by central upwind scheme. The obtained results of the resolution of dam-beak problem is presented in order to show the performance of the numerical scheme. Also a comparison of central upwind and Roe schemes is presented.
Sana Bakari,Marwa Ncir,Samir Felhi,Hafedh Hajlaoui,Mongi Saoudi,Neji Gharsallah,Adel Kadri 한국식품과학회 2015 Food Science and Biotechnology Vol.24 No.6
Total phenolic and flavonoid contents and antioxidant properties of extracts and essential oils of the aerial parts of Teucrium polium growing in Tunisia were evaluated. Total phenolic and flavonoid contents of extracts ranged from 48.88±0.01 to 400.00±0.01 mg of GAE/g and from 2.75±0.01 to 38.85±0.04mg of QE/g, respectively. GC/MS analysis of essential oils led to identification of 71 compounds representing 89.66% of the total composition. Antioxidant activities were assessed using the DPPH. (1,1-diphenyl-2-picrylhydrazyl) radical scavenging activity, β-carotene bleaching, and reducing power. The best overall antioxidant activity was recorded for acetone extracts, with a strong positive correlation between the total phenolic content and the IC50 value of DPPH (R²=0.9999), attributed to the polyphenolic content.
The Role of Tourism in Economic Growth
Sana NASEEM 한국유통과학회 2021 The Journal of Asian Finance, Economics and Busine Vol.8 No.6
This research investigates the role of tourism in promoting economic growth in the Kingdom of Saudi Arabia. Annual data were collected from the World Bank for 2003–2019. Tested by basic statistics, correlation coefficient, unit root test by augmented Dickey-Fuller test and Phillips-Perron unit. Followed by Johansen co-integration test and finally, the co-integration regression test by fully modified ordinary least square (FMOLS), dynamic ordinary least square (DOLS) and Canonical co-integration regression (CCR). The stationarity test shows that tourism receipts, tourism expenditure, number of tourist arrivals, and economic growth become stationary at zero, and the first-order difference. Johansen co-integration test reveals long-run relationship among the parameters where economic growth is endogenous and others are exogenous variables. The FMOLS finding reveals that all the exogenous variables have a significant relationship, but the DOLS model reveals that two are significant out of three exogenous variables. Simultaneously, the CCR depicts that all the exogenous variables have a significant relationship with the endogenous variable. All the three co-integration models are significant and stable as predict by the Hansen Instability test and Jarque-Bera normality test. Hence, hypothesis 1 is accepted, and for hypothesis 2, the number of tourist arrivals has a strong relationship with economic growth compared to other parameters.
Sana Sheik,K. R. Chandrashekar 경희대학교 융합한의과학연구소 2018 Oriental Pharmacy and Experimental Medicine Vol.18 No.2
Endophytic fungi associated with leaf and stem samples of Humboldtia brunonis Wall, a dominant myrmecophyte, commonly known as ‘hasige mara’, endemic to the South Western Ghats of India were enumerated from two sites viz. Charmadi and Mangalore University arboretum and tested for antimicrobial activity. Aspergillus sp., Curvularia clavata, Curvularia pallescens, Debaromyces hansenii, Guignardia sp., Hypoxylon anthochroum, Meyerozyma caribbica, Paecilomyces lilacinus were found in leaf samples of H. brunonis. Alternaria alternata, Cunninghamella echinulata, Fusarium fusarioides, Fusarium oxysporum, Phanerochaete sp. were found in stem samples. Lasiodiplodia theobromae was commonly present in both the samples. The zone of inhibition by the endophytic fungi Curvularia pallescens isolated from H. brunonis for Candida albicans was up to 24 mm diameter, which is comparable to the inhibition by the antifungal standard Nystatin (24 mm). In seven endophytic fungi possessed free radical scavenging activity at 10 μg/ml, the highest being in C. pallescens extracts. In the present study, C. pallescens exhibited better antimicrobial and antioxidant activity compared to the other extracts. The presence of mycotoxin curvularin was reported in the partially purified fraction of C. pallescens.