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Research Article
Transport of Polystyrene Polymer with DC Motor Having Rollers
Nandigana Venkata Raghavendra Vishal*
Issue:
Volume 11, Issue 2, April 2026
Pages:
48-64
Received:
16 February 2026
Accepted:
9 March 2026
Published:
19 March 2026
Abstract: In this paper, we study the transport of polystyrene polymer. They are transported using non contact method. We use DC motor having rollers. The motor is connected to switched mode power supply (SMPS) and controller. The voltage of the SMPS is 12 V. The controller controls the voltage of the motor. We study voltage of the motor from 1 V to 8 V. The motor have capacity of 12 V. The current of the motor at 12 V are 1.2 A. The switched mode power supply have electrical plug. We supply 220 V AC supply to SMPS. They have AC to DC converter. Here, the length of the polystyrene is 2 cm, width 2 cm and thickness is 0.082 mm. The mass is measured. We observe the polystyrene do not move from 1 V to 4 V. The transport is from 0.2 cm to 3 cm under the application of 5 V to 8 V, respectively. Further movement are not observed. The multimeters are used to measure the current-voltage characteristics of the motor. They are used to measure the voltage of the SMPS. In this paper, we develop theory to understand the transport of polystyrene under the action of DC motor. We develop two neural network models. The data driven neural network and physics from theory informed in the neural network. The neural network model match the experiments. The accuracy is good. Our simulations use less computer power and time. The training time is 30 s and predict time is 0.07 s. Our work can find applications in printing, packaging, decor, energy, sensors and material handling industries.
Abstract: In this paper, we study the transport of polystyrene polymer. They are transported using non contact method. We use DC motor having rollers. The motor is connected to switched mode power supply (SMPS) and controller. The voltage of the SMPS is 12 V. The controller controls the voltage of the motor. We study voltage of the motor from 1 V to 8 V. The...
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Research Article
Assessment of Occupational Noise Exposure in Local Grain Mills in Jalingo, Taraba State, Nigeria
Ogwuche Christian Ike,
Paul Ushiki Adamu,
Agidike Lawrence Ochonu,
Julius Thaddeus,
Agbu Joseph,
Imurana Dan Asebe
Issue:
Volume 11, Issue 2, April 2026
Pages:
65-70
Received:
2 March 2026
Accepted:
12 March 2026
Published:
26 March 2026
Abstract: The assessment of occupational health hazard of noise generated from grain mills in Bera, Karaofi and Magami areas of Jalingo metropolis of Taraba state in North-East region of Nigeria has been carried out. The objective of the study was to evaluate the level of occupational noise exposure among grain mill workers and customers and to determine compliance with recommended occupational safety standards. A total of 45 grain mill workers were interviewed, comprising 15 workers each from Bera, Karaofi, and Magami, to obtain information on working hours, exposure duration, and the availability of personal protective equipment (PPE). A descriptive statistical tool (Simple percentage) was used to analyse the results. The results indicate that the mean noise generated from Bera, Karaofi and Magami grain mills are 100.3 dB, with exposure of 12 h per day, 89.35 dB with exposure of 12 hours per day and 99.8 dB with exposure of 7 hours per day respectively. The noise generated from these grain mills exceed the permissible exposure limit recommended by national institute of occupational health association and occupational health safety administration of 85 dB The implication of the results is that all the grain mills workers in jalingo metropolis are susceptible to Noise-induced hearing loss (NIHL). The results of the noise at grinding, packaging and conveyors at each location also exceed the recommended exposure limit which makes the customers also vulnerable to health hazards. The findings also show that almost all the grain mill workers in the selected areas work over eight hours per day. The result also indicates that 86.7% of the grain mills workers were not provided with personal protective equipment (PPE) such as ear mufflers, vibrator dampers. The results also reveal that most of the machines used in grain mill are obsolete thereby making them to generate more noise than necessary. It was also discovered that none of the site visited uses noise damper in their grain mills. This placed the workers on high risk of noise- induce hearing loss and other health hazard associated with prolonged noise exposure such as high blood pressure, stress, hypertension, fatigue, reduced productivity, and difficulties in communication.
Abstract: The assessment of occupational health hazard of noise generated from grain mills in Bera, Karaofi and Magami areas of Jalingo metropolis of Taraba state in North-East region of Nigeria has been carried out. The objective of the study was to evaluate the level of occupational noise exposure among grain mill workers and customers and to determine com...
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Review Article
Empirical Data-Based Analysis and Countermeasures for the Safe Operation of Reservoirs in Pingliang City
Issue:
Volume 11, Issue 2, April 2026
Pages:
71-77
Received:
17 March 2026
Accepted:
27 March 2026
Published:
14 April 2026
DOI:
10.11648/j.eas.20261102.13
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Abstract: Reservoirs are core water conservancy infrastructure for regional water resource regulation, flood control, disaster reduction, irrigation and water supply. Their safe and stable operation is a key support for ensuring the sustainable development of regional economy and society, maintaining ecological environment balance and avoiding water disaster risks. Taking 35 small and medium-sized reservoirs in Pingliang City as the research object, relying on official statistical data, reservoir safety appraisal reports and engineering operation and maintenance (O&M) ledgers from 2016 to 2025, this paper systematically judges the current characteristics and core bottlenecks of the safe operation of reservoirs in Pingliang City by means of literature research, empirical analysis and induction, and analyzes the causes of problems from four dimensions: natural endowment, engineering construction, O&M management and fund guarantee. Combined with the objective needs of regional water resource endowment and water conservancy development, a targeted optimization path is constructed. The research shows that Pingliang City has achieved remarkable results in improving flood control capacity and promoting standardized O&M of reservoirs, but problems such as aging and attenuation of engineering facilities, insufficient regulation and storage capacity, and low level of information monitoring are still prominent. The collaborative measures proposed in this study, including engineering renovation, intelligent empowerment, management improvement and fund expansion, can effectively build a strong line of defense for the safe operation of reservoirs, and provide theoretical reference and practical paradigm for the safety governance of small and medium-sized reservoirs in arid and semi-arid areas of Northwest China.
Abstract: Reservoirs are core water conservancy infrastructure for regional water resource regulation, flood control, disaster reduction, irrigation and water supply. Their safe and stable operation is a key support for ensuring the sustainable development of regional economy and society, maintaining ecological environment balance and avoiding water disaster...
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