7 results match your criteria: "Tajik Technical University[Affiliation]"

Analysis of pedestrian second crossing behavior based on physics-informed neural networks.

Sci Rep

September 2024

Faculty of Transport and Road Infrastructure, Tajik Technical University, Dushanbe, 734042, Republic of Tajikistan.

Article Synopsis
  • Pedestrian two-stage crossings are designed to improve safety and efficiency at busy intersections by allowing pedestrians to cross in two separate stages, handling one direction of traffic at a time.
  • This paper introduces a new model using Physics-Informed Neural Networks (PINNs) to analyze pedestrian behavior during these crossings, leveraging fluid dynamics principles to assess aspects like speed and density.
  • The study reveals that PINNs provide better predictions of pedestrian flow compared to traditional methods, offering valuable insights for enhancing pedestrian safety and facilitating interactions with autonomous vehicles in smart transportation systems.
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Effect of Essential Oils and Dried Herbs on the Shelf Life of Fresh Goat Lump Cheese.

Foods

June 2024

Faculty of Horticulture and Landscape Engineering, Institute of Horticulture, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra, Slovakia.

In recent years, the use of natural preservatives in food products has gained significant attention due to their potential health benefits and effectiveness. A standardized microbiological analysis was conducted on Slovak farm-produced lump goat cheese samples to determine the antibacterial activity of dry herbs and essential oils added to vacuum-packed goat cheese. We employed five dried herbs and five essential oils derived from the same plants.

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In this research work, a protection and automation solution is developed, encompassing SEL751 and SEL751A protection relays that communicate through the IEC-61850 Generic Object-Oriented Substation Event (GOOSE) protocol to deliver high-speed detection and clearance of a 3-phase (3P) fault. The study case is a standard IEEE 13-bus grid including the main system generator (G1), power lines, loads, distributed generation (DG), bus bars, and feeders, equipped with protection relays for detecting over-current faults based on time and current. Two protection relays, B in the main system and B on the DG side, are integrated with a GOOSE protocol communication system.

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In this study, we considered the structural stability, electronic properties, and phonon dispersion of the cubic (c-ZrO), tetragonal (t-ZrO), and monoclinic (m-ZrO) phases of ZrO. We found that the monoclinic phase of zirconium dioxide is the most stable among the three phases in terms of total energy, lowest enthalpy, highest entropy, and other thermodynamic properties. The smallest negative modes were found for m-ZrO.

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Quality Assessment of Wild and Cultivated Green Tea from Different Regions of China.

Molecules

June 2021

Department of Agricultural and Environmental Chemistry, Faculty of Agriculture and Economics, University of Agriculture in Krakow, Al. Mickiewicza 21, 31-120 Krakow, Poland.

Natural products have always enjoyed great popularity among consumers. Wild tea is an interesting alternative to tea from intensive plantations. The term "wild tea" is applied to many different varieties of tea, the most desirable and valued of which are native or indigenous tea plants.

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Magnetoimpedance (MI) in Co-based microwires with an amorphous and partially crystalline state was investigated at elevated frequencies (up to several GHz), with particular attention paid to the influence of tensile stress on the MI behavior, which is called stress-MI. Two mechanisms of MI sensitivity related to the DC magnetization re-orientation and AC permeability dispersion were discussed. Remarkable sensitivity of impedance changes with respect to applied tensile stress at GHz frequencies was obtained in partially crystalline wires subjected to current annealing.

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Cu@FeO MNPs as novel nanomagnetic reagents were prepared to investigate their catalytic behavior in the preparation of tetrahydrobenzimidazo[2,1-]quinazolin-1(2)-ones, as important biologically active compounds. Then, characterization of the synthesized nanoparticles was performed using different methods including Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD) analysis, thermogravimetric analysis (TGA), vibrating sample magnetometer (VSM), energy dispersive X-ray (EDX), and scanning electron microscopy (SEM). All reactions were performed with small amounts of the Cu@FeO MNPs under solvent-free conditions.

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