Abstract In this paper, convective heat transfer of Fe 3 O 4 –carbon nanotubes (CNTs) hybrid nanofluid was studied in a horizontal small circular tube under influence annular magnets. The pipe has an inner diameter mm and length 1.2 m. Heat characteristics the –water were examined for many parameters, such as nanoparticle volume fraction range 0.4–1.2% Reynolds number 476–996. order to increase...

BACKGROUND More than 60,000,000 Bangladeshis are drinking water with unsafe concentrations of one or more elements. OBJECTIVES Our aims in this study were to evaluate and improve the drinking water testing and treatment plans for western Bangladesh. METHODS We sampled groundwater from four neighborhoods in western Bangladesh to determine the distributions of arsenic, boron, barium, chromium...

BACKGROUND Magnetized water has made many improvements in industry, agriculture and medicine. However its utilization in medicine still remains controversial. OBJECTIVE In this study we aimed to investigate the effects of magnetized water on height of epithelial cells in pre-implantation stage endometrium and fallopian tube and number of corpus lutea in female mice. MATERIALS AND METHODS Ei...

The wear of the focusing tube is a very important feature of the abrasive water jet machining. Of all rejected focusing tubes, 85% are worn. Similary, the age of focusing tube influences the cut geometry and quality of machined surface. With regard to the stated, wearing of the focusing tube is subject of this paper. Focusing tube outlet diameter was measured as well as its influence on the sur...

Abstract: The diameter and configuration of tubes are important design parameters of power condensers. If a proper tube diameter is applied during the design of a power unit, a high energy efficiency of the condenser itself can be achieved and the performance of the whole power generation unit can be improved. If a tube assembly is to be replaced, one should verify whether the chosen condenser ...

Addition of nanoparticles into a fluid can improve the heat transfer performance base in exchangers. In this work, preparation method and process nanofluids are introduced, thermal properties nanofluids, such as conductivity viscosity, discussed deeply. This paper summarizes various theoretical models viscosity nanofluids. A comprehensive literature survey on applications limitations has been c...

We assessed health risks related to Arsenic (As) in contaminated drinking water in Hanam, applying the Australian Environmental Health Risk Assessment Framework, which promotes stakeholder involvement in risk assessments. As concentrations in 300 tube-well water samples, before and after filtration, were analyzed and the water consumption levels in 150 households were estimated. Skin cancer ris...

The heart begins simply as a bilateral field within the lateral plate mesoderm (Figure 1.1, Table 1.1). As the early embryo undergoes formation of the gut-tube, these bilateral fields migrate toward the midline, where the cranial-most aspect of the fields will fuse ventrally to form the outer curvature of the heart tube.1 These fields will continue to migrate together, with more of the heart fi...

an isolated fusarium anthophilum (a. braun) wollenweber (isolate 16c) has been considered as a candidate for microbial control of barnyard grass [echinochloa crus-galli (l.) p. beauv]. the effects of nutrition on conidiation, germination rate and germ-tube elongation of conidia of the fungus were evaluated. conidia yield, conidial germination and conidial germ-tube elongation of the fungus grow...

BACKGROUND Prior animal and human studies of prenatal exposure to solvents including tetrachloroethylene (PCE) have shown increases in the risk of certain congenital anomalies among exposed offspring. OBJECTIVES This retrospective cohort study examined whether PCE contamination of public drinking water supplies in Massachusetts influenced the occurrence of congenital anomalies among children ...