Texas Journal of Engineering and Technology
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Determination of Gas Pressure Distribution in a Pipeline Network Using the Broyden Method
Get PDFA potential problem in natural gas pipeline networks is bottlenecks occurring in the flow system due to unexpected high pressure at the pipeline network junctions resulting in inaccurate quantity and quality (pressure) at the end user outlets. The gas operator should be able to measure the pressure distribution in its network so the consumers can expect adequate gas quality and quantity obtained at their outlets. In this paper, a new approach to determine the gas pressure distribution in a pipeline network is proposed. A practical and userfriendly software application was developed. The network was modeled as a collection of node pressures and edge flows. The steady state gas flow equations Panhandle A, Panhandle B and Weymouth to represent flow in pipes of different sizes and a valve and regulator equation were considered. The obtained system consists of a set of nonlinear equations of node pressures and edge flowrates. Application in a network in the field involving a large number of outlets will result in a large system of nonlinear equations to be solved. In this study, the Broyden method was used for solving the system of equations. It showed satisfactory performance when implemented with field data
Investigating the Performance Dynamics and Stability Boundaries of Machine Tool Spindle and Cutting Tool Assembly
Get PDFOptimizing cutting operations to minimize costs has become crucial in the competitive manufacturing industry. This study combines experimental and analytical modeling to understand the dynamic properties of machine tool spindle and cutting tool assembly. By characterizing the system and employing finite element analysis, the research aims to enhance cutting tool development, process planning, and productivity while minimizing dynamic testing. The focus is on achieving stability, reliability, and efficiency in cutting operations
Study of Hybrid Cognitive Radio Networks Based On Access to the Frequency Spectrum and Their Ability to Succeed
Get PDFIn this research, we will study the performance of the network and users in light of accessing the hybrid spectrum in the large (huge) cognitive radio network (CRN) so that we have primary users and secondary users when a primary user transmits on the same channel and at a uniform time (the same time) the user units are eclipsed Sub-state the channel through the sensing channel and draws the appropriate scheme for accessing the channel (it can be an overlay) for transmissions based on the results of the sensing channel. Controlled in order to produce less interference (the interference in the first network is less than the interference in the preceding), and when we don't have primary users, the secondary user units do it = a transmission process under the overlay channel and thus increase the flow based on random geometry
Corrosion Inhibitors Based on Imidozoline
Get PDFIn the article, it is proved that the C=H bond intensive absorption characteristic for the imidozoline family is more in the sample obtained by acid catalysis. In this, C= H - and C=O- we see that the absorption intensities for the bonds are interrelated, as the intensity of one bond increases, that of the other decreases. It is possible to prove the existence of imidazaline derivatives as a result of comparison of C=H bond intensities in the IR spectra of the studied samples under different conditions
Developing a ML-Based Model for Detecting Diabetes
Get PDFAs technology progresses, data grows exponentially and is produced quickly from a wide variety of sources. Data storage, analysis, and interpretation become challenging due to data's variety and complexity. Despite the fact that we can now store such enormous amounts of data, much progress has to be made in terms of analyzing and making sense of that data. Better clinical routes to detect and predict diabetes at early stages are essential for reducing complications and delaying the onset of diabetes. The worldwide rise in the prevalence of diabetes is one of the most concerning trends in modern medicine. A high blood glucose level, caused by insufficient insulin synthesis or improper insulin response by body cells, characterizes the metabolic illnesses known together as diabetes mellitus. Organs as diverse as the brain, nervous system, heart, kidney, eyes, skin, and limbs may all suffer harm from diabetes mellitus. In this study, we used machine learning to differentiate between type 1 and type 2 diabetes trend
Euroasian economic union: specifics and development perspectives
Get PDFThis article examines perspectives and specifics of development of Euroasian economic unio
Analysis of the Impact of Vyurok's Various Speed Ratios On Thread Quality Indicators Used In Modified Assembly Mode
Get PDFOne factor that affects the quality of the threads collected in modified ring collection mode is the vyurok speed. To determine the speed of the alternative vyurok, the ratio of the vyurok speed to the speed of the ringed assembly machine has been studied. Speed ratio is 0.99; When it was 0.89 and 0.81, the quality of the threads collected was compared comparatively. According to the results, the quality indicators of the threads collected at a speed of 0.89 were found to be goo
Effects of Steel Fiber and Compaction Process on the Flexural Strength of Reinforced Concrete Beams with Longitudinal Cold Joints
Get PDFDue to many reasons, concrete may not be poured in a single connected operation and therefore joints are formed in locations of old-new concreting. This study discusses the behavior of Reinforced Concrete (RC) and Fiber Reinforced Concrete (FRC) beams containing longitudinal cold joints under two compaction scenarios. The first layer in the first scenario is compacted prior pouring of the second layer, while the other scenario investigates the effects of leaving the first layer uncompacted. It is believed the compaction of the first layer has an important effect on the bonding characteristics between both concrete layers as it may affect the roughness of the joint interface. The study also investigates the time elapsed before pouring of the second layer. The cold joint was located at compression fiber at 0.7h from bottom. Under the four-point load testing, ten 100×160×1000 mm RC beams have been tested and evaluated. Three groups of beams were separated from one another. Four beams make up the first group; one uses as a control, while the other three have horizontal cold joints, the second group consists of three beams with horizontal cold joint and without compacted first layer. whereas the third group consists of three beams with horizontal cold joint adding steel fiber to strengthen the samples that have the least load. The results showed a decrease in ultimate load, ductility and energy absorption capacities for specimen B1.5-RC-NC, B3.0-RC-NC and B4.5-RC-NC, ultimate load, ductility and energy absorption capacities were decreased (9.03%,50.5%,50.9%), (23.4%,31.5%,33.3%) and (27.7%,84.0%, 85.6%) respectively in comparison with control beam. While the decrease in ultimate load, ductility, energy absorption capacities for specimen with steel fiber B1.5-FRC-NC, B3.0-FRC-NCand B4.5-FRC-NC were (5.02%,37.0%, 38.3%), (19.2%,21.1%,21.6%) and (26.5%,58.4%, 58.5
Creating an Inclusive Educational Environment for Children with Special Educational Needs
Get PDFThe article discusses the issue of the conditions for providing accessible education for children with special educational needs, the development of special education in Uzbekistan and its situation at this stage of developmen
Analysis of Automobile Mufflers
Get PDFSilencers and cleaning methods in the exhaust system of automobile engines are analyzed. The processes of liquid, thermal and catalytic decontamination of exhaust gases have been tested. The efficiency of the design of the catalytic converter has been determined and it has been established that the closer it is located to the combustion chamber, the more efficient it will work