One of the main targets of future 5G cellular networks is enlarging the Internet of Things (IoT) devices’ connectivity while facing the challenging requirements of the available bandwidth, power and the restricted delay limits. Unmanned aerial vehicles (UAVs) have been recently used as aerial base stations (BSs) to empower the line of sight (LoS), throughput and coverage of wireless networks. Moreover, non-orthogonal multiple access (NOMA) has become a bright multiple access technology. In this paper, NOMA is combined with UAV for establishing a high-capacity IoT uplink multi-application network, where the resource allocation problem is formulated with the objective of maximizing the system throughput while minimizing the delay of IoT applications. Moreover, power allocation was investigated to achieve fairness between users. The results show the superiority of the proposed algorithm, which achieves 31.8% delay improvement, 99.7% reliability increase and 50.8% fairness enhancement when compared to the maximum channel quality indicator (max CQI) algorithm in addition to preserving the system sum rate, spectral efficiency and complexity. Consequently, the proposed algorithm can be efficiently used in ultra-reliable low-latency communication (URLLC).
The aim of this research is to study the some chemical, microbial and sensory changes in infant formula (IF) sample were studied in conditions similar to those used by mothers when they prepare baby milk bottles at their houses. The obtained results showed that moisture content, free fatty acid%, peroxide value and р-anisidine value increased with increase the consumption or storage period in IF at ambient and cold storage, but all results obtained within the limits allowed for standards specifications up to 30 days. Determination of vitamin C by HPLC and the results of the analysis showed that vitamin C content in IF sample was approximately stable during consumption and storage at ambient (25±5°C) and cold (7±2°C) temperature. The range of vitamin C was (72.6 to 75.1mg/100g) in the IF sample stored during consumption at ambient and cold temperature up to 30 days. Sensory evaluation in this study showed that all samples had highly score, which means that they have good sensory characteristics and are acceptable up to 30 days of consumption and storage at ambient and cold temperature up to 30 days. The total count of aerobic bacteria showed that all samples conform to the Codex Stan. 72-(1981) and Egyptian standards (No. 2072/2013) and within the permissible limits at the end of storage at ambient and cold storage for 30 days. Also, all samples were free of pathogenic microbes.
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