Browsing by Title
Now showing items 1650-1669 of 49842
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Active Power Filter
( John Wiley & Sons, Ltd , 2014 , Book chapter)The proliferation of power electronics-based devices and equipment has significantly affected the power quality of the grid, which changes its sinusoidal nature through adding harmonic distortion. Power electronics ... -
Active vibration control of flexible cantilever plates using piezoelectric materials and artificial neural networks
( Academic Press , 2016 , Article)The study presented in this paper introduces a new intelligent methodology to mitigate the vibration response of flexible cantilever plates. The use of the piezoelectric sensor/actuator pairs for active control of plates ... -
Active Vibration Isolation System (AVIS) using a Voice Coil Actuator to improve Free Space Optics Communication
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)In Free Space Optic communication (FSOC), transmitter and receiver's alignment is vital to maintain the line of sight during the whole communication period. This is critical in data transmission over a long-distance. ... -
Activity of Antibiotic Producing Bacteria Isolated from Rhizosphere Soil Region of Different Medicinal Plants
( Qatar University Press , 2020 , Poster)The rhizosphere soil of medicinal plants is rich in microorganisms that develop antibiotics as natural mechanism of protection against other microbes that live in their vicinity. The present study aims to explore the ... -
Actuator fault detection and isolation of differential drive mobile robots using multiple model algorithm
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)An actuator fault detection and isolation (FDI) scheme is proposed in this paper for differential drive mobile robots based on the concept of multiple model approach. The nonlinear kinematic model of the mobile robot is ... -
Actuator Fault Diagnosis in Multi-Zone HVAC Systems using 2D Convolutional Neural Networks
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)This paper presents a novel supervised on-line fault diagnosis strategy in Heating, Ventilation, and Air conditioning (HVAC) systems for actuator faults using 2D Convolutional Neural Networks. It is based on an efficient ... -
Actuator Fault Estimation for Multi-agent Systems: A Sliding-mode Observer-based Approach
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)This study is concerned with the design of a distributed fault estimation scheme for linear multi-agent systems subject to actuator faults. For each agent, a sliding-mode observer-based estimator module is proposed that ... -
Actuator Fault Tolerant Control in a Team of Mobile Robots
( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)In this paper, a fault tolerant controller is developed for loss of effectiveness actuator faults in differential drive mobile robots. Based on the extended Kalman filter technique, a joint parameter and state estimation ... -
Acupuncture vs Noninsertive Sham Acupuncture in Aging Patients with Degenerative Lumbar Spinal Stenosis: A Randomized Controlled Trial
( Elsevier , 2020 , Article)Background: Acupuncture is commonly used to treat degenerative lumbar spinal stenosis in Asian countries. However, rigorous data regarding the efficacy and safety of acupuncture for aging patients are currently lacking. ... -
Acute effect of toe cap choice on toe deviation angle and perceived pain in female professional ballet dancers
( Hindawi Limited , 2019 , Article)Several classical dance complex movements, such as pointe, require body weight to be supported properly to avoid risk of foot injury. Regarding the choice of toe cap for pointe shoes, it is unclear which type can better ... -
Acute Effects of Caffeine on Strength Performance in Trained and Untrained Individuals
( SciTechnol , 2015 , Article)Objective: The primary aim of this study was to compare the acute effects of a caffeine based supplement on the strength performance of trained and untrained individuals with a secondary investigation into the effects ... -
Acute exposure to cigarette smoking followed by myocardial infarction aggravates renal damage in an in vivo mouse model
( Hindawi Limited , 2017 , Article)Cigarette smoking (S) is a risk factor for progressive chronic kidney disease, renal dysfunction, and renal failure. In this study, the effect of smoking on kidney function was investigated in a mouse model of myocardial ... -
Acute glans ischemia after circumcision successfully treated with low-molecular-weight heparin and topical dihydrotestosterone: A case report
( Wolters Kluwer Health , 2020 , Article)Circumcision like any other surgical procedure is not devoid of complications. Serious complications are rare and include iatrogenic hypospadias, glans ischemia/necrosis, and glans amputation, all of which require an ... -
Acute mercury toxicity modulates cytochrome P450, soluble epoxide hydrolase and their associated arachidonic acid metabolites in C57Bl/6 mouse heart
( Elsevier Ireland Ltd. , 2014 , Article)Mercury exposure is associated with increased risk of cardiovascular disease and profound cardiotoxicity. However, the correlation between Hg2+-mediated toxicity and alteration in cardiac cytochrome P450s (Cyp) and their ... -
Acute perforated appendicitis after blunt abdominal trauma: A report from a 7-year-old
( WB Saunders , 2019 , Article)Individually, trauma and appendicitis are some of the most common conditions in clinical practice, particularly in emergency medicine. In rare cases, trauma and appendicitis may co-exist, imposing a dilemma of whether these ... -
Acute psychosis and concurrent rhabdomyolysis unveiling diagnosis of hypothyroidism
( BMJ Publishing Group , 2019 , Article)Neuropsychiatric and muscular symptoms can develop as part of hypothyroidism. However, frank psychosis or rhabdomyolysis due to hypothyroidism are uncommon and have been reported rarely as the first presenting features of ... -
Acute spontaneous spinal subdural hematoma: A case report
( International Scientific Information, Inc. , 2020 , Article)BACKGROUND: Spontaneous spinal subdural hematoma is a rare condition that can lead to devastating neurologic deficits, usually caused by coagulation abnormalities, trauma, underlying neoplasm, or arteriovenous malformation. ... -
Acute Toxicity Of Some Oil Dispersants To Mullet Fry ( Liza Macrolepis) Of The Arabian Gulf
( Qatar University , 1986 , Article)The acute toxicity of Shell LTX, Shell Concentrate, Servo CD 2000 and Exxon OSD 9217 were used to calculate 72 - hr. LC ci\ and toxicity curves to the Mullet Fry ( Liza macrolepis) under the Arabian Gulf conditions (Temp. ... -
Acutodesmus obliquus as a benchmark strain for evaluating methane production from microalgae: Influence of different storage and pretreatment methods on biogas yield
( Elsevier , 2015 , Article)Acutodesmus obliquus (SAG 276-1), a microalga with a resistant cell wall, was chosen as a benchmark strain for testing the effect of storage and pretreatment methods on methane yields during anaerobic digestion. A. obliquus ... -
Adaptability of 9-switch inverter configurations for multiphase induction motors with phase reconfiguring techniques
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)The 9 switch inverter (9SI) configuration is capable to control the power for two independent 3-phase loads simultaneously. However, this 9SI has the limitation on modulation index (M.I) since each inverter leg is controlled ...
