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RISS 인기검색어
- 검색키워드
- 저자 : Tahir Fazal (검색결과 3 건)
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Raziq Fazal,Hussain Jibran,Ahmad Sohail,Asif Hussain Muhammad,Khan Muhammad Tahir,Ullah Assad,Qumar Muhammad,Wadood Fazal,Gull-e-Faran 아세아·태평양축산학회 2024 Animal Bioscience Vol.37 No.3
Objective: Due to current selection practices for increased egg production and peak persistency, the production profile, age at maturity, and body weight criteria for commercial layers are constantly changing. Body weight and age at the time of photostimulation will thus always be the factors that need to be adequately addressed among various production systems. The current study was carried out to determine the effects of pullets' body weight (low, medium, and heavy) on their performance, welfare, physiological response, and hormonal profile. Methods: With regard to live weight, 150 16-week-old pullets were divided into three groups using a completely randomized design (CRD) and held until the 50th week. One-way analysis of variance was used to evaluate the data under the CRD, and the least significant difference test was used to distinguish between treatment means. Results: In comparison to the medium and light birds, the heavy birds had higher body weight at maturity, an earlier age at maturity, and higher egg weight, eggshell weight, eggshell thickness, egg yolk index, breaking strength, egg surface area, egg shape index, egg volume, and hormonal profile except corticosterone. However, the medium and light birds had lower feed consumption rates per dozen eggs and per kilogram of egg mass than the heavy birds. Light birds showed greater body weight gain, egg production, and egg specific gravity than the other categories. At 20 weeks of age, physiological response, welfare aspects, and catalase were non-significant; however, at 50 weeks of age, all these factors—aside from catalase—were extremely significant. Conclusion: The findings of this study indicate that layers can function at lower body weights during photostimulation; hence, dietary regimens that result in lighter pullets may be preferable. Additionally, the welfare of the birds was not compromised by the lighter weight group.
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Muhammad Amir,Tahir Fazal,Javed Iqbal,Aamir Alaud Din,Ashfaq Ahmed,Asim Ali,Abdul Razzaq,Zulfiqar Ali,Muhammad Saif Ur Rehman,박영권 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.115 No.-
The expensive carbonaceous substrates including graphene, reduced graphene oxide, carbon nanotubeshave been coupled with ZnO to improve the properties and photocatalytic performance of carbon basedZnO photocatalysts. To replace these expensive materials, biochar offers as a low-cost alternative to preparebiochar-based photocatalysts. In this study, Calotropis gigantea leaves derived biochar-ZnO (BC-ZnO)composites were synthesized to overcome the ZnO related problems (charge recombination, wider bandgap, and poor visible light absorption). Different BC-ZnO (BCZ-1–3) composites were characterized toevaluate their intrinsic properties and composites were employed to degrade ciprofloxacin (CIP). BCZ-3composite exhibited slower recombination of electron-hole pairs, lower band gap (2.97 eV), and betterlight absorption in visible region than ZnO. The enhanced adsorptive-photocatalytic degradation efficiencywas attained up to 98.5% using BCZ-3 than BC (46.2%) and ZnO (41.4%). The O2 and OH radicalswithin BCZ-3 are dominant reactive species indulged in CIP photocatalytic degradation. BCZ-3 photocatalystexhibits 80% degradation of CIP after four regeneration cycles. The maximum adsorption capacitywas achieved 54.18 mg g1 for BCZ-3 than BC (46.20 mg g1) and ZnO (15.55 mg g1). The results showthat BCZ-X composites can be used as stable, efficient, economical, and sustainable composite for therecovery of pharmaceutical wastewater.
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Current developments in esterification reaction: A review on process and parameters
Zarmeena Khan,Fahed Javed,Zufishan Shamair,Ainy Hafeez,Tahir Fazal,Ambreen Aslam,William B. Zimmerman,Fahad Rehman 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.103 No.-
Esters are among the highest volume of industrial organic compounds produced. They are frequentlyemployed in various domestic and industrial processes. Fischer esterification regarded as the most commonand widely practiced process of ester synthesis, faces serious limitations of low conversion and highreaction time attributed largely to establishment of equilibrium. Ester hydrolysis, reverse reaction toesterification, starts by supply of a byproduct- water. Several approaches have been developed to avoidequilibrium establishment and to improve overall conversion and rate of reaction, a significant differenceexists between the current industrial practices and optimum esterification process/conditions. In the currentreview, a critical analysis of esterification techniques is conducted. Catalytic, non-catalytic thermalesterification, enzymatic esterification, along with factors affecting their productivity are discussed indetail. The current barriers, future challenges and potential of the esterification technologies are analyzed. Based on the comprehensive-data analysis, a novel technology-based solution is proposed.
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