The pandemic of arsenic poisoning due to contaminated groundwater in West Bengal, India, and all of Bangladesh has been thought to be limited to the Ganges Delta (the Lower Ganga Plain), despite early survey reports of arsenic contamination in groundwater in the Union Territory of Chandigarh and its surroundings in the northwestern Upper Ganga Plain and recent findings in the Terai area of Nepa...

Abstract This study is conducted to investigate the effect of off-center placement twisted tape on flow distribution and heat transfer in a circular tube. The width 20, 18, 16, 14 12 mm performance discussed under same twist ratio 2.0. numerical analysis field, average Nusselt number, friction factor thermo-hydraulic parameter tube are with Reynolds number ranged from 2600 8760. results indicat...

In this study, condensation heat transfer coefficients (HTCs) of HCFC22, HCFC123, HFC134a and HFC245fa are measured on a horizontal plain tube 19.0 mm outside diameter. All data are taken at the vapor temperature of 39 with a wall subcooling temperature 3-8 . Test results show the HTCs of newly developed alternative low vapor pressure refrigerant, HFC245fa, on a smooth tube are 9.5% higher than...

In this paper, first the governing parameters characterizing low-finned tubes are reviewed. Second, the more important of the available performance correlations are compared with the available experimental data. The most reliable one can be employed to develop a pressure drop relationship, which has already been used in an algorithm for exchanger sizing. Also a means for the identification of a...

Application of transition flow can be found in several processes and systems. It has been revealed through findings from various researchers that the values Reynolds numbers at which occurs vary. In current work, investigations were numerically conducted by Fluent on water three assorted plain tubes fitted with miscellaneous tape insertions. They are tube crossed-axes-circle-cut insert (C-C tub...

A 68-year-old male was admitted to the Gastroenterology department for elective percutaneous endoscopic gastrostomy (PEG) tube placement. The patient had neurologic dysphagia secondary to amiotrophic lateral sclerosis, recurrent low respiratory tract infections and was receiving nutricional support from a nasogastric tube since the previous four months. A 20Fr PEG tube (Covidien®) was placed by...

Neonatal acute gastric volvulus is rare and often associated with diaphragmatic anomalies. Patients usually present with vomiting and respiratory distress, but excessive salivation, failure to pass a nasogastric tube beyond 20 cms and the presence of a space occupying thoracic lesion should also prompt a search for the entity. The authors describe a case presenting with these atypical findings ...

Craniocervical bony pneumatization is a rare finding, with limited numbers of cases reported in the literature. It is thought to be linked to Eustachian tube dysfunction and a ball valve mechanism, and has a link with recurrent Valsalva maneuvers. We report a case of pneumatization of the occiput, atlas (C1) and axis (C2) in a patient with extensive ENT (Ear, Nose and Throat) surgical history w...