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Double Retroperitoneal Hydatid Localization: A Case Report
Ramzi Mejri,Kays Chaker,Mokhtar Bibi,Sami Ben Rhouma,Yassine Nouira 대한비뇨기종양학회 2021 대한비뇨기종양학회지 Vol.19 No.4
The hydatid cyst is a parasitic pathology which is endemic in Tunisia and presents a public health problem. Hydatid cysts located in the retroperitoneum, especially around or in the kidney, are rare and only represent 5% of visceral locations. The kidney is the most commonly affected organ of the urinary tract. The psoas muscle is an uncommon location and not less than 70 cases have been cited. We report the case of an unusual presentation of a right kidney hydatid cyst associated with a psoas muscle location. To our knowledge, this association of double retroperitoneal location has not been reported in the literature.
Propagation Loss Model for Neighborhood Area Networks in Smart Grids
Muhammad Babar Ali,Wolfgang Endemann,R¨udiger Kays 한국통신학회 2022 Journal of communications and networks Vol.24 No.3
Currently the power sector is striving for theefficient utilization of its generation capabilities in existingdistributed energy networks. In future smart grids, applicationslike automated meter reading, direct load control with demandside management, and charging points for electric vehicles inmultistory parking plazas will pose a strong communicationchallenge to the RF planners. One of the main objectives isto design a realistic link budget for outdoor-to-deep-indoorwireless communication scenarios while utilizing the existinggrid infrastructure. This paper presents a realistic two-slopeempirical path loss model to predict power requirements for thewireless link between smart meters in prosumer premises andremote utility/grid devices presumably available in near vicinity. The proposed model is based on measurements performed overthree sub-gigahertz frequency bands (200 MHz, 434 MHz, and868 MHz) and the 2.4 GHz band. It supports outside, inside andin-basement deployment of the smart meter communication unit.
Kim, Kwang Jin,Jung, Hyun Hwan,Seo, Hyo Won,Lee, Jung A.,Kays, Stanley J. American Society for Horticultural Science 2014 HortScience Vol.49 No.2
<P>Phytoremediation of volatile organic compounds in indoor air involves both the plant and microbes in the media; however, removal rate is typically expressed on a leaf area basis. We determined the effect of root media volume on phytoremediation rate of volatile toluene and xylene to determine if there is a change in phytoremediation efficiency. Phytoremediation rate was calculated based on the aboveground space occupied by the plant and on the leaf area. Foliage plants of <I>Fatsia japonica</I> and <I>Draceana fragrans</I> ‘Massangeana’ were grown in different-sized pots (1, 2, 4, 6, and 12 L) that gave aerial plant to root zone volume ratios of 21:1, 21:2, 21:3, and 21:6. Total root volume and root fresh weight increased in <I>D. fragrans</I> with increasing media volume, whereas root density per unit of media volume decreased in both species. The efficiency of volatile toluene and xylene removal by the plants was increased as the root zone volume increased, whereas removal efficiency per unit media volume increased and then decreased. The highest volatile toluene and xylene removal efficiency was at a ratio of 21:3 (aerial plant:root zone volume) in <I>F. japonica</I> and 21:2 in <I>D. fragrans</I>. When phytoremediation efficiency was expressed on a leaf area basis, the phytoremediation rate for toluene and xylene increased progressively for both species with increasing media volume and as root volume increased. Calculating the amount of plant material needed within a home or office to obtain sufficient volatile organic compound (VOC) removal cannot be accurately predicted base solely on a leaf area (LA) or aboveground volume basis.</P>