Among the various methods for enhancing heat transfer in a exchanger, passive method of inserting continuous swirler inside heated tube provides secondary flow along fluid that reduces thickness thermal boundary layer, thus increasing efficiency convection performance. The research’s primary goal is to conserve energy, materials, and money by operating efficient exchanger equipment. However, cr...

Drought control and resistance affect national food security. With this in mind, we studied five main grain-producing regions of China: Sanjiang Plain, Songnen Plain, Huang-Huai-Hai Plain, the middle Yangtze River and Jianghuai region and Sichuan Basin. Using GIS technology, we evaluated the comprehensive agricultural drought situation based on major crops, the basic drought resistance by integ...

In the present study, heat transfer characteristics, namely, coefficient, Nusselt number, pressure drop, friction factor and performance evaluation criteria are evaluated for water, Al2O3 Al2O3/Cu nanofluids. The effects of Reynolds volume fraction composition nanoparticles in hybrid nanofluid analyzed all characteristics. single particle nanofluids flowing through a plain straight tube which i...

Background: Hepatitis B virus is a DNA belonging to the Hepadnaviridae family attacking liver and can cause both acute chronic disease. The aim of this study was determine prevalence core antibody in Sudanese random blood donors.
 Materials methods: descriptive cross-sectional conducted at Ibn Sina Specialized Hospital, Khartoum, Sudan during period from May 2022 September 2022. Blood samp...

R daily chest radiography (CXR) is common in intubated and mechanically ventilated patients. A key justification is the belief that routine chest radiographs allow prompt detection of problems that could be missed by clinical evaluation, such as early pneumothoraxes, or malpositioned endotracheal tubes. Results of a previous study1 suggested that these abnormalities are relatively minor and unl...

BACKGROUND Thoracostomy tube (TT) placement constitutes primary treatment for traumatic hemopneumothorax. Practice patterns vary widely, and criteria for management and removal remain poorly defined. In this cohort study, we examined the impact of implementation of a practice guideline (PG) on improving management efficiency of thoracostomy tube. METHODS We developed a PG aimed at standardizi...

ActorsOnlyRule(v:ACViewClass) ::= §o:ObjectClass· o∈v ∧o∈find_all_abstract_actors () Query22 find_all_abstract_actors()::= §a:SpecifiedActorElementClass· (a in AbstractActorElementClass) 5.2.5 Plain-Actors-Only view Informal description A Plain-Actors-Only view presents plain actors, their direct specified actors, and the “specifies” links that connect them. master-thesis-v4.4.doc 93/231 9/1/20...

We introduce a technique for creating novel, enhanced thumbnails of Web pages. These thumbnails combine the advantages of plain thumbnails and text summaries to provide consistent performance on a variety of tasks. We conducted a study in which participants used three different types of summaries (enhanced thumbnails, plain thumbnails, and text summaries) to search Web pages to find several dif...