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Copyright of Journal of Soil Sciences & Agricultural Engineering is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Soil Sciences & Agricultural Engineering is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Soil Sciences & Agricultural Engineering is the property of Egyptian National Agricultural Library (ENAL) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

This study sought to assess patient and operator eye lens doses in diagnostic coronary angiography (DCA) and percutaneous coronary interventions (PCI) in a University hospital in Oman. Kerma area product (P kA), cumulative air kerma (CAK) and fluoroscopic time (FT) were retrospectively recorded from the DICOM header for 264 patients. The median (interquartile range) of FT, P KA and CAK were: 5.3 min (2.6–10.5), 60.9 Gy cm2 (41.3–91.4) and 0.86 Gy (0.61–1.29), respectively, for DCA procedures, and they were 20.2 min (13.3–30.1), 174.0 Gy cm2 (113.7–253.3) and 2.6 Gy (1.8–3.9), respectively, for PCI procedures. The results revealed wide variability in patient doses among individual patients. Monitoring and recording patient dose data can be valuable for quality assurance and patient safety purposes. Feedback to the operator may help optimize radiation doses to patients and prompt further action, as needed. [ABSTRACT FROM AUTHOR]

In this paper, we present a proper quantum system to perform different tasks of quantum information processing with optimal conditions. We study the populations, entanglement, and nonclassical properties of a system consisting of three level atom interacting with a nonlinear Kerr medium field constructed in the framework of generalized Heisenberg algebra. We quantify these quantities in terms of different parameters involved in the whole system considering the case of moving and stationary atom in the real experimental meaning of the coupling constant. The nonlinearity introduced by these kinds of fields play a useful role to create high amount of entanglement during the time evolution. Interestingly, the relationship between the degree of nonlinearity and robust of entanglement is explored in this present model. [ABSTRACT FROM AUTHOR]

This study was conducted to investigate the effect of the internal size and thermal insulation of the hive on bee colonies strength (sealed brood area) and productivity (honey area, pollen area). Hives from Langstroth type were used containing honeybee colonies of equal strength from the species of hybrid carniolan. This study included three internal sizes of bee hives (0.024, 0.031 and 0.038 m³); three insulation cases (without, with sackcloth and with foam); and three hive entrance direction (East, Southeast and South). The lowest mean hive temperatures recorded in the middle of January to be 18.3, 16.8 and 11.8°C with foam, sackcloth and without insulation, respectively. Average lower temperature were 20, 16.7 and 13.6 °C for internal hive sizes of 0.024, 0.031and 0.038 m³, respectively. Average temperature were 17.3, 16.9 and 16.6 °C for hive entrance direction South, Southeast and East, respectively. The mean area of honey, pollen and sealed brood at the end of March were 826, 652 and 3561 cm², respectively when using foam insulator. And 884, 716 and 3626 cm2, respectively at the end of March and with internal hive size 0.024 m³. In case of south entrance direction the above areas were 845, 658 and 3542 cm², respectively at the end of March. Significant increase in hive temperature, honey area, pollen area, sealed brood area was detected When using the lowest internal beehives size and foam insulator. [ABSTRACT FROM AUTHOR]

In this work, a simple, facile and economical solid state method was used to produce ZnO nanopowder. The method is based on the thermal decomposition of zinc acetate dehydrate at 900 °C for one hour. The ZnO nanopowder studied by means of X-ray diffraction(XRD), Fourier transform infrared spectroscopy(FT-IR), Fluorescence spectrometer and scanning electron Microscopy(SEM). The result obtained revealed that the synthesized ZnO nanopowder was wurtzite type with a crystallite size of 54.79 nm. [ABSTRACT FROM AUTHOR]

The current study explores the effectiveness of an iron slag nanopowder (ISNP), which prepared from local iron steel industry, against gamma/neutron shielding. The structural and physical characteristics were experimentally determined. The crystal structure, morphology and elemental composition of the ISNP were studied using X-ray diffraction, scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX). On the other hand, a comprehensive experimental and theoretical study on the γ-ray shielding effectiveness of the ISNP was performed. In which, the experimental results have been validated by comparison with theoretical data which obtained by using the WinXcom program. This paper uses the well-known mathematical relationships to derive many shielding and dosimetry parameters such as effective atomic number and, effective electron density, for photon interaction and photon energy absorption as well as the γ-ray kerma coefficient from the mass attenuation coefficient. The exposure and energy absorption buildup factors have been also calculated. Furthermore, the shielding effectiveness against thermal and fast neutrons has been tested in terms of total macroscopic cross-sections. The results have revealed that the produced ISNP, with crystallite size of 24.5 nm, exhibits good shielding characteristics. Finally, based on this preliminary study, we can have concluded that the iron slag nanoparticles can be suitably used as an effective and safe (lead - free) component for radiation shielding., (Copyright © 2021 Elsevier Ltd. All rights reserved.)

Parathyroid hormone (PTH) has attracted considerable interest as a bone anabolic agent. PTH plays a central role in regulating calcium phosphate metabolism and its increases in production in response to low serum calcium levels. A continuous hypersecretion of PTH, as occurs in primary hyperparathyroidism, leads to bone resorption. In this study, the effect of different doses of parathyroid hormone (PTH) on bone mineral content (BMC) in rats was investigated by particle-induced X-ray emission (PIXE). This study will help in investigating further the toxicity of extremely high doses of PTH on BMC. For this study, PTH at doses of 15, 45, or 135μg/kg/day were applied to 9-month-old male and female Sprague Dawley (SD) rats. The concentrations of calcium (Ca), phosphorus (P), strontium (Sr), and zinc (Zn) were measured for bone treatment of PTH. From the results of the research, it was revealed that the biomechanical characteristics of the bone as well as the bone mass were enhanced after the treatment. It was further found that the concentrations of other elements also increased, excluding Zn. This research proved that PTH assists in the treatment of osteoporosis as revealed by the characteristics of different elements. PIXE can be used to determine the concentrations of bone mineral content., (Copyright © 2016 Associazione Italiana di Fisica Medica. Published by Elsevier Ltd. All rights reserved.)