The crude oil in pipelines should remain at high temperature and pressure to satisfy the fluidity requirement of deep-sea transportation consequently lead global buckling pipelines. Uncontrolled is accompanied by pipeline damage leakage; therefore, active control needed. Pipe-in-pipe (PIP) systems have been widely used because protection insulation characteristics outer pipe inner pipe. In this...

We provide a novel achromatic design in the illumination system for a mini projector with an LED light source. The lateral color aberration at the corners of the DMD active area can be reduced to 0.48 μm by our compact ATIR prism. The total prism size is 4091 mm(3). The spot sizes at the corner and the edge are also controlled under 198 μm. Moreover, we use a light pipe for color uniformity at ...

The importance of lateral pipe flow on runoff generation in wet steep hillslopes has been described in many case studies from around the world. However, most hillslope studies are done in isolation and usually focus on the idiosyncrasies of individual hillslope characteristics and pipe flow response at a single site. Consequently, the first order controls on pipe flow responses remain poorly un...

INTRODUCTION Gutta-percha is the most commonly used material for root canal obturation; it has been recently manufactured with different tapers. The aim of this in vitro study was to compare microleakage of canals obturated with standard gutta-percha (0.02 taper) or the new 0.04 taper gutta-percha master cone using the cold lateral condensation technique. MATERIALS AND METHODS Forty-four extr...

Aims and Objectives Root canal preparation and obturation are of great importance in endodontics. Its purpose is to eliminate pulpal and periradicular disease. The aim of this study was to compare coronal bacterial microleakage in prepared root canals using Neoniti A1 and Reciproc files that obturated with lateral compaction, single cone gutta-percha, and hybrid (tapered cone/lateral compaction...

The pressure changes in the liquid-filled fluid circuits of Hydraulically Interconnected Suspensions (HIS) often lead to vibration of the whole pipeline and associated structures and hence become a source of structural noise, which degrades ride comfort. This paper presents the numerical and experimental investigation into the vibration of this kind of hydraulic circuit. The one-dimensional wav...

Tapered columns are a type of column that is used for different purposes, including architectural purposes or structural needs to take into account the changes occur moments along with height column. For example, in highway bridges, tapered reduce number transmitted base and from there foundation. This research studied analysis short reinforced concrete variable cross-sections linear manner by ...

[1] One of the greatest challenges in the field of hillslope hydrology is conceptualizing and parameterizing the effects of lateral preferential flow. Our current physically based and conceptual models often ignore such behavior. However, for addressing issues of land use change, water quality, and other predictions where flow amount and components of flow are imperative, dominant runoff proces...

An inexpensive and radiolucent elbow can be built with a PVC pipe available at any home center or hardware store for less than $25 that allows elbow arthroscopy or open elbow surgery such as open reductions and internal fixation to be performed in the prone, "sloppy" lateral, or decubitus position.