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Register a new userCalculation the Best Pressure of Material Filling in liquid Filling systems
حساب أفضل ضغط لتعبئة المواد في أنظمة تعبئة السوائل
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في انظمة تعبئة السوائل غير القابلة للانضغاط التي تستخدم مكبس ترددي ضمن اسطوانة و مقاد بأسطوانة هوائية مع دارة تحكم كهروهوائية, هناك العديد من البارامترات التي لها تأثير على هذه الأنظمة و من هذه البارامترات ضغط المادة المعبأة في المكبس. تم في هذا البحث تبيان تأثير ضغط المادة السائلة المعبأة في المكبس على سرعة المكبس بهدف الوصول للضغط المثالية لعملية التعبئة و بالتالي الحصول على أقل ضغط و أكبر سرعة ضمن الحدود المقبولة.
During the study of liquid filling systems’ performance using a piston driven by a pneumatic piston, all parameters having an influence should be considered. One of these parameters is the piston pressure and its influence on the velocity of the piston. This influence will be explained in this paper.
References used
CENCEL Y and CIMBALA J, 2006 - Fluid Mechanics . McGraw-Hill Companies, Inc. USA, 933
CROWE T, AND ELGER F AND WILLIAM C ROBERSON A, 2009 - Engineering Fluid Mechanics. John Wiley & Sons, Inc.USA, 580
SSHOBEIRI M.T, 2010 - Fluid Mechanics for Engineers. Springer-Verlag Berlin.Germany,504
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In liquid filling systems using a cylinder with a reciprocating piston driven by
pneumatic cylinder,
In the filling stroke there are a lot of parameters affecting these systems and their
performances ,one of these parameters is a piston stroke len
gth.
In this paper the influences of a piston stroke length and their parameters on the
velocity of the piston has been studied in order to reach the optimum piston stroke length.
First the mathematical module of velocity of the piston and the length of the stroke
and other parameters is extracted, then experiments are done using a special testing stand
equipped by all control and measuring tools.
All reading data are converted into graphs.
The results show that In liquid filling systems there is an ideal value range for the
piston stroke length.
Aim of the study was To Compare the efficiency of R
ProTaper and R-Endo retreatment files in the removal of
conventional gutta-percha and resin coated gutta-percha and
time required. 60 extracted single root premolars were selected,
and then divi
ded into two groups according to the obturation
material. Next, each group was divided into two groups
according to the methods of retreatment.
Table filling based relational triple extraction methods are attracting growing research interests due to their promising performance and their abilities on extracting triples from complex sentences. However, this kind of methods are far from their f
ull potential because most of them only focus on using local features but ignore the global associations of relations and of token pairs, which increases the possibility of overlooking some important information during triple extraction. To overcome this deficiency, we propose a global feature-oriented triple extraction model that makes full use of the mentioned two kinds of global associations. Specifically, we first generate a table feature for each relation. Then two kinds of global associations are mined from the generated table features. Next, the mined global associations are integrated into the table feature of each relation. This generate-mine-integrate'' process is performed multiple times so that the table feature of each relation is refined step by step. Finally, each relation's table is filled based on its refined table feature, and all triples linked to this relation are extracted based on its filled table. We evaluate the proposed model on three benchmark datasets. Experimental results show our model is effective and it achieves state-of-the-art results on all of these datasets. The source code of our work is available at: https://github.com/neukg/GRTE.
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information. Such systems help individuals by providing recommendation through the use of various personalization
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This research aims to study the effect of addition the filling materials (sodium aluminosilicate, Talc) to the unsaturated polyester(unsaturated polyester resign)(UPR) first, and unsaturated polyester reinforced by fiberglass (20%) secondly, Number o
f mechanical tests were done, they included (Tensile, Flexural Strength). The effect of addition of filling materials sodium aluminosilicate (SAS), Talc, and a mixture of sodium aluminosilicate and Talc to the unreinforced polyester with fiberglass was studied in the first step of the research, and the results showed that the best values were gotten when adding a mixture of ((SAS) and Talc) at ratio (10% SAS,5% Talc), where the tensile strength value raised up from (31.2 MPa) to (33 MPa), and the elastic module value also raised up from (2330 MPa) to (2750.5 MPa) , and the flexural strength value also raised up from (0.057 GPa) to (0.0729 GPa). The effect of addition of filling materials (sodium aluminosilicate, Talc, and a mixture of sodium aluminosilicate and Talc ) to the reinforced polyester with fiberglass (20%) was studied in the second step of the research, and the results showed that the best values were gotten when adding a mixture of ((SAS) and Talc) at ratio (5% SAS,5% Talc), where the tensile strength value raised up from (101.7 MPa) to (108.8 MPa), and the elastic module value also raised up from (5616 MPa) to (6367.9 MPa), and the flexural strength value raised up from (0.1203 GPa) to (0.1597 GPa).
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