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Sökning: WFRF:(Rahman M)

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741.
  • Rahimi, Parastoo, et al. (författare)
  • Impact of the COVID-19 pandemic on food production and animal health
  • 2022
  • Ingår i: Trends in Food Science & Technology. - : Elsevier. - 0924-2244 .- 1879-3053. ; 121, s. 105-113
  • Tidskriftsartikel (refereegranskat)abstract
    • Background: Severe acute respiratory coronavirus syndrome 2 (SARS-CoV-2) is the etiological agent of coronavirus disease 2019 (COVID-19). SARS-CoV-2 was first detected in Wuhan, China and spread to other countries and continents causing a variety of respiratory and non-respiratory symptoms which led to death in severe cases.Scope and approach: In this review, we discuss and analyze the impact of the COVID-19 pandemic on animal production systems and food production of meat, dairy, eggs, and processed food, in addition to assessing the impact of the pandemic on animal healthcare systems, animal healthcare quality, animal welfare, food chain sustainability, and the global economy. We also provide effective recommendations to animal producers, veterinary healthcare professionals, workers in animal products industries, and governments to alleviate the effects of the pandemic on livestock farming and production systems.Key findings and conclusions: Port restrictions, border restrictions, curfews, and social distancing limitations led to reduced quality, productivity, and competitiveness of key productive sectors. The restrictions have hit the livestock sector hard by disrupting the animal feed supply chain, reducing animal farming services, limiting animal health services including delays in diagnosis and treatment of diseases, limiting access to markets and consumers, and reducing labor-force participation. The inhumane culling of animals jeopardized animal welfare. Egg smashing, milk dumping, and other animal product disruptions negatively impacted food production, consumption, and access to food originating from animals. In summary, COVID-19 triggered lockdowns and limitations on local and international trade have taken their toll on food production, animal production, and animal health and welfare. COVID-19 reverberations could exacerbate food insecurity, hunger, and global poverty. The effects could be massive on the most vulnerable populations and the poorest nations.
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744.
  • Rahman, Cheryl V., et al. (författare)
  • PLGA/PEG-hydrogel composite scaffolds with controllable mechanical properties
  • 2013
  • Ingår i: Journal of Biomedical Materials Research. Part B - Applied biomaterials. - : Wiley. - 1552-4973 .- 1552-4981. ; 101B:4, s. 648-655
  • Tidskriftsartikel (refereegranskat)abstract
    • Biodegradable polymer scaffolds have great potential for regenerative medicine applications such as the repair of musculoskeletal tissues. Here, we describe the development of scaffolds that blend hydrogel components with thermoplastic materials, combining the unique properties of both components to create mouldable formulations. This study focuses on the structural and mechanical properties of the composite scaffolds, produced by combining temperature-sensitive poly(DL-lactic acid-co-glycolic acid) (PLGA)/poly(ethylene glycol) (PEG) particles with a hydrogel component [Pluronic F127, fibrin or hyaluronic acid (HyA)]. The composite formulations solidified over time at 37 degrees C, with a significant increase (p 0.05) in compressive strength observed from 15 min to 2 h at this temperature. The maximum compressive strength was 1.2 MPa for PLGA/PEG-Pluronic F127 scaffolds, 2.4 MPa for PLGA/PEG-HyA scaffolds and 0.6 MPa for PLGA/PEG-fibrin scaffolds. Porosity for each of the PLGA/PEG-hydrogel formulations tested was between 50 and 51%. This study illustrates the ability to combine this thermoplastic PLGA/PEG system with hydrogels to fabricate composite scaffolds, and demonstrates that altering the particle to hydrogel ratio produces scaffolds with varying mechanical properties.
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749.
  • Rahman, Mahbubur, et al. (författare)
  • Direct measurement of NOx produced by lightning
  • 2006
  • Ingår i: EOS Trans. AGU, 87(52), Fall Meet. Suupl., Abstract AE53A-0289, 2006, San Francisco, USA.
  • Konferensbidrag (övrigt vetenskapligt/konstnärligt)
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  • Resultat 741-750 av 851
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