In the field of PHC pile joints, it is important that prestressed high-strength concrete pipe piles are referred to as piles. conventional hoops, bamboo-like joints protrude from joint position at surface pile. Driving in, disturbing soil around pile, and affecting frictional resistance serious issues. To address such issues, herein, a new type clamping proposed. A method presented determine si...

In the present study, an unlooped pulating heat pipe has been considered with two liquid slugs and three neighboirng vapor plugs.The governing equations such as momentum, energy and mass equations are solved explicitly except the energy equation of liquid slugs.The aim of the present study is to calculate the entropy generation through the performance of a pulsating heat pipe. Additionally, the...

We study the Riemann problem for isothermal ow of a gas in a thin pipe with a kink in it. This is modeled by a 22 system of conservation laws with Dirac measure sink term concentrated at the location of the bends in the pipe. We show that the Riemann problem for this system of equations always has a unique solution, given an extra condition relating the speeds on both sides of the kink. Further...

What trajectory in the laboratory frame does a marble follow if it is held inside a freely rotating pipe and then suddenly released so that it can slide frictionlessly outward along the pipe? A previously published solution is only valid for a pipe of small moment of inertia (so that it is either low in mass or short in length). IOP

INTRODUCTION Although water pipe tobacco smoking is common in Lebanon and Syria, prevalence in neighboring Jordan is uncertain. The purposes of this study were (a) to assess the prevalence of water pipe tobacco smoking among university students in Jordan and (b) to determine associations between sociodemographic variables and water pipe tobacco smoking in this population. METHODS A trained in...

BACKGROUND The objective of this study was to examine the association between tobacco smoking, in particular water pipe smoking, and periodontal health. METHODS A total of 262 citizens of Jeddah, Saudi Arabia in the age range from 17 to 60 years volunteered to participate in the study. The clinical examinations were carried out at King Faisal Specialty Hospital and Research Center in Jeddah a...

To compare the effect of various pipe materials on biofilm formation, surface water was used as the test water source; plastic-based pipe materials (polyvinyl chloride-PVC, unplasticised polyvinyl chloride-UPVC, medium density polyethylene-MDPE) and cement-based pipe materials (cement and asbestos cement) are commonly used in drinking water distribution systems in South Africa as test pipe mate...

The splicing pipe is an important hardware on multi-split transmission lines. quality of its crimping and internal structure directly affects the normal stable operation line. online flaw detection robot for means to realize automatic pipe. This paper basis proposing a mechanism configuration suitable line detection, aiming at matching relationship between imaging plate movement joint driving t...

In the present study, non-Newtonian flow in annular pipe is considered. The analytical solution for velocity and temperature fields is presented while entropy generation due to fluid friction and heat transfer is formulated. The third grade fluid with constant properties is accommodated in the analysis. It is found that reducing non-Newtonian parameter increases maximum velocity magnitude and m...