existence of capacity drop phenomenon, as the difference between pre-queue and queue discharge flow rates, has been one of the controversial concepts of traffic engineering. several researches have focused on capacity drop existence and also its estimation issues. this paper aims to estimate capacity drop based not only on a comparison between breakdown and queue discharge flow rates, but also ...

background: it is clear that helicobacter pylori (h. pylori) is a spiral bacterium that infects human and causes gastritis and peptic ulcer. the aim of this study was to determine the relationship between h .pylori infection and the iron status of the body. methods: this study was conducted in shahid beheshti hospital of babol university of medical sciences, babol, iran from august 2007 to july...

background: hyperbilirubinemia is considered one of the most prevalent problems in newborns. phototherapy, exchange transfusion, and herbal medicine are common therapeutic approaches for preventing any neurologic damage in infants with neonatal jaundice. however, herbal medicine is less commonly used. aim: this study aimed to investigate the effect of bilineaster drop on neonatal hyperbilirubin...

Molten iron temperature prediction during hot metal transportation plays a key role in reducing energy consumption and improving the quality of steel-making products. In this paper, first, mechanism model based on physical laws drop principle heat transfer relationship is established. Aiming at problems difficult detection molten torpedo tank incomplete measurement information caused by limited...

This paper presents an algorithm for rapidly creating and rendering soft shadows on a plane. It has the advantages of rapid generation on current hardware, as well as high quality and a realistic feel on a perceptual level. The algorithm renders the soft shadow to a texture. It begins with a hard drop shadow, then uses the object’s silhouette edges to generate penumbrae in a single pass. Though...

This paper uses a labor supply model that incorporates waiting for health care to derive an empirical specification for sick leave and to estimate the impact of waiting for health care on the duration of sick leave. In the estimations, we use the 2002 sample of the RFV-LS register database, supplemented with information from questionnaires. The results indicate that almost all waiting for healt...

among the all parameters affecting the performance of a downhole de-oiling hydrocyclone, the investigation of internal flow field deserves more attempts especially in the petroleum industry. in this study, the effects of inlet flow rate, inlet oil volume fraction, and oil droplet diameter on the separation efficiency and pressure drop ratio have been investigated along the hydrocyclone body. al...

a canola seed pneumatic conveyor was designed and constructed to convey canola seed at a 90 g/hr mass flow rate through a 58 mm diameter pipe. physical and aerodynamic properties of the canola seed that are critical to the design process were measured. system pressure drop, comprising air pressure drop and solid pressure drop and which is the most important aspect of pneumatic conveyor design, ...

We consider the enstrophy cascade in forced two-dimensional turbulence with a linear drag force. In the presence of linear drag, the energy wave-number spectrum drops with a power law faster than in the case without drag, and the vorticity field becomes intermittent, as shown by the anomalous scaling of the vorticity structure functions. Using previous theory, we compare numerical simulation re...

Аннотация: Статья о новой форме торговли в сети Интернет. Преимущества дропшиппинга открывают для российских производителей и предпринимателей новые горизонты в международной торговле и маркетинге. Автор рассматривает особенности развития и роль дропшиппинга в электронной коммерции нового тысячелетия. Ключевые слова: дропшиппинг, электронная коммерция, интернет-маркетинг, электронная торговля. ...