The topic of this research is to the study the feasibility of a machine vision prototype for the control of metallic tubes (used in water pomp). Nine different kinds of defects located everywhere on the tube have to be detected: The defects are: on the top: little hollows, bumps, and excesses of material on the body: horizontal bumps, vertical bumps, vertical scratches and finally on the bottom...

Experiments on the flow boiling heat transfer of almost pure CO2 and CO2-oil mixtures in horizontal smooth and micro-fin tubes have been carried out. The smooth tube is a stainless steel tube with an inside diameter of 3mm, and the micro-fin tube is a copper tube with a mean inside diameter of 3.04mm. Experiments were carried out at mass velocities from 190 to 1300kg/(ms), saturation temperatur...

ment of a T-tube, which is a common procedure following exploration of the common bile duct, has been extended to the management of large duodenal perforations/injuries as well as esophageal perforations when primary repair is considered inappropriate [1–3]. In addition to providing controlled drainage (enterocutaneous fistula), the rationale behind this use of the T-tube is to reduce suture li...

To obtain representative data, particle loss in sampling tubes must be minimal; otherwise, the magnitude of losses known so it can corrected. Since sample occurs through various mechanisms and depends on size, airflow velocity, Reynolds number, there is no simple method to predict multitudinous configurations tubes. This study aims present a for experimentally determining as function sizes. Mor...

Steel-tube grouting technology has been widely applied in the slope control engineering. While anti-sliding performances of different connection modes grouted steel tubes still needs further investigation. In this paper, a large-scale model test was used to study influence three types pile connections, namely whole without connection, with reinforcement welded and casing on performance multi-st...

Over a decade, coal-based thermal power plants are upgraded to operate at supercritical pressure conditions due its high efficiency and low emissions. Water wall panels of typical boiler structured spirally in the lower furnace vertically placed upper furnace. The spiral tubes inclined 19 22 degrees which fluid behaves as horizontal tubes. design water plays key role designing boiler. present w...

Effective growth of multiwalled boron nitride nanotubes (BNNTs) has been obtained by thermal chemical vapor deposition (CVD). This is achieved by a growth vapor trapping approach as guided by the theory of nucleation. Our results enable the growth of BNNTs in a conventional horizontal tube furnace within an hour at 1200 °C. We found that these BNNTs have an absorption band edge of 5.9 eV, appro...

An experimental investigation has been carried out to study the cooling of a hot horizontal Stainless Steel surface of 3mm thickness, which has 800±10°C initial temperature. A round water jet of 22 ± 1C temperature was injected over the hot surface through straight tube type nozzles of 2.5-4.8mm diameter and 250mm length. The experiments were performed for the jet exit to target surface spacing...

An error was found in the paper ‘‘A Turbulent Diffusion Model for Particle Dispersion and Deposition in Horizontal Tube Flow’’ by Mols and Oliemans (1998). The error affected the results presented in the first part of the paper, namely, Figs. 6–11. The objective of this Brief communication is to correct the error providing the proper solution, and to present the main results with the corrected ...