نتایج جستجو برای: canal gate
تعداد نتایج: 75610 فیلتر نتایج به سال:
Dentists and dental professional are constantly in contact with round, sharp, hot, and rotating instruments such as burs, scalpel blades, files, etc., in daily practice. Gate Glidden is one of the mentioned instruments used for removing gutta percha from root canal- treated teeth. In this article, a rare case of penetration of a fractured Gate Gildden bur into a dentist's elbow is reported and ...
The first rule regarding irrigation district canal automation is that there is no single "best" method of automation. As an example, the cost of automating a small lateral structure with a computerized gate is similar to the cost of automating a regulating gate on a large canal, although the respective justifiable budgets may be $1000 versus $100,000 per structure. The locations of buffer reser...
Automated openand closed-loop control systems can enhance the performance of irrigation delivery systems. This paper examines the response of the canal test cases developed by the ASCE task committee on canal automation algorithms to a particular anticipatory open-loop control technique, gate stroking. The performance of the ideal gate-stroking solution is compared with the performance of an ap...
This paper examines the problem of routing known water demands through gate-controlled, open-channel irrigation delivery systems. Volume-compensation principles were used to route multiple demands in multiple-pool canal systems. The volume-compensation method schedules each demand change individually under the assumption of a series of steady states and superimposes the individual results. Volu...
In this paper a two-input, two-output (TITO) fractional order mathematical model of a laboratory prototype of a hydraulic canal is proposed. This canal is made up of two pools that have a strong interaction between them. The inputs of the TITO model are the pump flow and the opening of an intermediate gate, and the two outputs are the water levels in the two pools. Based on the experiments deve...
the treatment of in completely formed pulpless teeth has presented considrable problems. these teeth have wide open apexes and the walls of the root canal diverge toward the apical tissues. mechanical preparation cannot be done in the normal manner beacause of the large initial size and the taper of apical part of the canal , a mechanical stop cannot be produced at the apex of the canal and , t...
Voltage-gated EAG K+ channels switch between fast and slow gating modes in a Mg2+-dependent manner by an unknown mechanism. We analyzed molecular motions in and around the voltage-sensing S4 in bEAG1. Using accessibility and perturbation analyses, we found that activation increases both the charge occupancy and volume of S4 side chains in the gating canal. Fluorescence measurements suggest that...
The paper reviews several methods to convert discharge into gate opening. A control algorithm for one or several reaches of an irrigation canal sometimes uses a discharge as the control action variable even though the device to be manipulated is a gate or a weir. In this case a slave controller has to convert the discharge into a gate opening or a sill elevation in case of a weir. This is usual...
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