A5031381014- Wireless Networks and Protocols
- Cholesterol and Lipid Metabolism
- Hepatitis C virus research
- Indoor and Outdoor Localization Technologies
- Hepatitis B Virus Studies
- Energy Efficient Wireless Sensor Networks
- Antenna Design and Analysis
- Cognitive Radio Networks and Spectrum Sensing
- Cloud Computing and Resource Management
- Robotics and Sensor-Based Localization
- Millimeter-Wave Propagation and Modeling
- Software-Defined Networks and 5G
- Drug Transport and Resistance Mechanisms
- UAV Applications and Optimization
- Advanced MIMO Systems Optimization
- Microwave Engineering and Waveguides
- Distributed Control Multi-Agent Systems
- Network Traffic and Congestion Control
- Advanced Image and Video Retrieval Techniques
- Cooperative Communication and Network Coding
- Monoclonal and Polyclonal Antibodies Research
- Interconnection Networks and Systems
- Advanced Wireless Network Optimization
- Advanced Optical Network Technologies
- Mobile Ad Hoc Networks
Georgia Institute of Technology
2014-2024
Al-Azhar University
2023
Park Plaza Hospital
2023
Einstein Center Digital Future
2023
Technische Universität Berlin
2023
Atlanta Technical College
2023
Alexandria University
2022-2023
Karlstad University
2023
Qatar University
2014-2022
Massachusetts Institute of Technology
2019-2021
We have analysed the pattern of nucleotide sequence variability in 5' non-coding region (5' NCR) geographically dispersed variants hepatitis C virus (HCV). Phylogenetic analysis sequences this indicated existence a new type, provisionally termed type 4, identity which was confirmed by further more variable part HCV core protein coding region. The geographical distribution 4 distinct from that other types, it being particularly widespread Africa and absent or rare Europe Far East. Much NCR...
A method is described for identifying different genotypes of hepatitis C virus (HCV) by restriction endonuclease cleavage sequences amplified PCR from the 5′ non-coding region. Using enzymes HaeIII-RsaI and HinfI-MvaI, followed with BstU1 or ScrFI, it was possible to identify distinguish HCV 1a, 1b, 2a, 2b, 3a, 3b, 4, 5 6. The used investigate prevalence these in 723 blood donors 15 countries, largest survey date, one which covered a wide range geographical regions (Europe, America, Africa...
The widespread usage of WLANs and mobile devices has fostered the interest in localization systems for wireless environments. majority research context wireless-based focused on device-based active localization, which are attached to tracked entities. Recently, device-free passive (DfP) been proposed where entity is neither required carry nor participate actively process. Previous studies have small areas and/or controlled In this paper, we present design, implementation, analysis Nuzzer, a...
Hepatitis C virus (HCV) type 4 is the predominant genotype found throughout Middle East and parts of Africa, often in association with high population prevalence as Egypt. To investigate more fully its evolutionary relationship other genotypes HCV, to study overall genome organization, we have determined entire sequence encompassing coding region 4a isolate ED43, obtained from an HCV- infected individual The ED43 contained a single open reading frame encoding polyprotein 3008 amino acids...
WLAN Device-free passive (DfP) indoor localization is an emerging technology enabling the of entities that do not carry any devices nor participate actively in process using already installed wireless infrastructure. This useful for a variety applications such as intrusion detection, smart homes and border protection. We present design, implementation evaluation RASID, DfP system human motion detection. RASID combines different modules statistical anomaly detection while adapting to changes...
WLAN Device-free passive (DfP) indoor localization is an emerging technology enabling the of entities that do not carry any devices nor participate actively in process using already installed wireless infrastructure. Current state-of-the-art DfP systems require a large overhead to construct RF profile for environment, then used as reference either motion detection or tracking. These profiles are also robust changes requiring frequent manual maintenance reconstruction. In this paper, we...
Traffic shaping, including pacing and rate limiting, is fundamental to the correct efficient operation of both datacenter wide area networks. Sample use cases include policy-based bandwidth allocation flow aggregates, rate-based congestion control algorithms, packet avoid bursty transmissions that can overwhelm router buffers. Driven by need scale millions flows apply complex policies, traffic shaping moving from network switches into end hosts, typically implemented in software kernel...
The 5' end of the NS-4 protein different genotypes hepatitis C virus (HCV) is highly variable in nucleotide and inferred amino acid sequence, with frequent predicted substitutions between all six major HCV described to date. This region has been shown be antigenic by epitope mapping, elicits antibody HCV-infected individuals a detectable type-specific component. We have used this sequence data specify branched peptides for an indirect binding/competition assay detect each genotype. A total...
Anaemia during pregnancy can lead to adverse maternal and perinatal outcomes. The WHO recommends that all pregnant women in areas where anaemia is prevalent receive supplements of iron folic acid. However, due many factors, the use acid supplementation still low countries. This study was conducted assess rates iron-folic associated factors effects taking on birth weight (LBW) infants. A cross-sectional at Khartoum Hospital, Sudan. Enrolled answered a questionnaire socio-demographics...
We previously described a heterozygous mouse model overexpressing human HA-tagged 24S-hydroxylase (CYP46A1) utilizing ubiquitous expression vector. In this study, we generated homozygotes of these mice with circulating levels 24OH 30-60% higher than the heterozygotes. Female homozygous CYP46A1 transgenic mice, aged 15 months, showed an improvement in spatial memory Morris water maze test as compared to wild type mice. The N-Methyl-D-Aspartate receptor 1, phosphorylated-N-Methyl-D-Aspartate...
Cloud services are deployed in datacenters connected though high-bandwidth Wide Area Networks (WANs). We find that WAN traffic negatively impacts the performance of datacenter traffic, increasing tail latency by 2.5x, despite its small bandwidth demand. This behavior is caused long round-trip time (RTT) for combined with limited buffering switches. The RTT forces to take full burden reacting congestion. Furthermore, changes on a faster time-scale than RTT, making it difficult congestion...
Objective: To validate high AIMS 65 score for predicting 30-day mortality in patients with variceal bleed presenting to a tertiary care hospital. Study Design: Prospective longitudinal study. Place and Duration of Study: Department Gastroenterology, Liaquat National Hospital Karachi, Pakistan from Aug 2021 Apr 2022. Methodology: Cirrhotic having bleeding requiring hospital admission, aged 18-60 years either gender, history hematemesis and/or melena were assessed clinically enrolled into the...
WLAN Device-free Passive (DfP) localization is an emerging technology that uses the widely deployed WiFi networks for detecting and localizing human presence within indoor environments. This paper presents accurate low-overhead technique based on non-parametric statistical anomaly detection. constructs profiles capturing signal strength characteristics when no present area of interest these to identify any anomalies in due motion activity. To adapt changes environment, constructed are...
The liver X receptors Lxrα/NR1H3 and Lxrβ/NR1H2 are ligand-dependent nuclear critical for midbrain dopaminergic (mDA) neuron development. We found previously that 24(S),25-epoxycholesterol (24,25-EC), the most potent abundant Lxr ligand in developing mouse midbrain, promotes mDA neurogenesis vitro In this study, we demonstrate 24,25-EC an Lxr-dependent manner vivo also prevents toxicity induced by inhibitor geranylgeranyl pyrophosphate. Furthermore, using MS, show overexpression of human...
There is a continuous flux of the oxysterol 27-hydroxycholesterol (27-OHC) from circulation across blood-brain barrier (BBB) into brain. The major metabolite 27-OHC in brain 7α-hydroxy-3-oxo-4-cholestenoic acid (7-HOCA). We confirm recent report describing presence this cerebrospinal fluid (CSF) at relatively high concentration. A simple and accurate method was developed for assay 7-HOCA CSF based on isotope dilution-mass spectrometry use 2H4-labeled internal standard. concentration found to...
Low-cost mini-drones with advanced sensing and maneuverability enable a new class of intelligent visual systems. This potential motivated several research efforts to employ drones as standalone surveillance systems or assist legacy deployments. However, fundamental challenges remain unsolved including: 1) Adequate coverage sizable targets; 2) Target orientation that render effective only from certain directions; 3) Occlusion by elements in the environment, including other targets.
Smart devices are becoming more powerful with faster processors, larger storage, and different types of communication modalities (e.g., WiFi, Bluetooth, cellular). In the predominant view Internet Things (IoT) architecture, all smart expected to communicate cloud services and/or user-held mobile for processing, user interaction. This architecture heavily taxes bandwidth by moving large volumes data from edge cloud, presumes availability low-cost, high-performance that satisfy needs. We...
White spaces are portions of the TV spectrum that allocated but not used locally. Ifaccurately detected, white offer a valuable new opportunity for highspeed wireless communications. We propose method space detection allows node to actlocally, based on centrally constructed model, and at low cost, whiledetecting more opportunities than best known approaches. Weleverage two ideas. First, we demonstrate low-cost monitoringhardware can "good enough" capabilities. Second, develop amodel combines...