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Purpose: Purpose of the Paper Purpose To describe cases of pituitary macroadenoma during the follow-up to their primary ocular pathologies. Patient registries were collected in the Centre for Ophthalmic Specialized Care for many pathologies, and who had previously developed a pituitary macroadenoma were returned. From 2003 to 2020, 16/14 966 pituitary macroadenoma patients were reported in total, total. Mean difference from first suspicious visual field signs to diagnosis was 125 207. 93 days. Following surgical intervention, all patients' visual field has improved. Pituitary macroadenomas are likely to be missed or diagnosed with delay if ophthalmic patients are already undergoing another pathology that prevents the clinician from rigorously describing the disease. Despite severe visual field impairment, clinical recovery was almost complete in 4/6 patients, indicating that even diagnostic delay did not preclude recovery in our study.
Source link: https://doi.org/10.1055/a-1778-3249
Abstract A second order generalized integral-frequency locked loop with prefilter is used for surge detection in the surge detection problem of high-speed magnetic suspension centrifugal blower. This technique is used to normalize the amplitude and frequency of the surge signal by using the rotor radial displacement signal in the magnetic suspension blower. The frequency of the blower surge vibration signal is tracked adaptively, so that the response time of finding surge signal is not affected by the frequency and amplitude of detection is not affected by the frequency and amplitude. As a result, the surge signal detection's quick response time has been enhanced. Sogio-FLL has guessed the rotor speed, and SOGI-FLL has obtained the speed data for notch, which is sent to SOGI for notch. The experimental results show that the surge detection system based on rotor radial displacement signal is able to detect the surge signal immediately after its occurrence.
Source link: https://doi.org/10.1088/1361-6501/ac5a9a
Since the pandemic of COVID-19-infected patients, especially pneumonia patients whose lungs are infected with pneumonia, has largely increased since the pandemic of COVID-19 diseases began in December 2019. As a result, many biomedical engineers have been rushing to produce and produce emergency ventilators, using the Ambu-bag squeezing ventilator to compensate for the inadequate ventilators supply. This paper describes the development and construction of a blower-controlled ventilator for home-treatment COVID-19 patients, as well as our custom-built flow and pressure sensor, electronic peep valve, and proportional controlled valve. All ventilator parameters will be obtained and broadcasted for remote access of the health provider, according to a home ventilator server. The blower-based ventilator for home-treatment COVID-19 patients is safe for life support, assuaging with the FDA's stringent guidelines on life-support ventilators, and it's expected to be tested with animal subjects in the next phase.
Source link: https://doi.org/10.3390/electronics11050753
Many jurisdictions are debating whether or not to legislate to implement a whistleblower protection policy for releasing information regarding tax evasions or misconduct relating to an entity's tax dealings. This essay explores Australia's traditional and modern approach to whistleblower protection, provides an overview of the procedure that resulted in laws being drafted, and examines some of the key features of the proposed whistleblower protection scheme for tax purposes.
Source link: https://doi.org/10.54648/taxi2018044
Approval by ANSYS software creates a physical model of the air blower system consisting of these key components: collector, impeller, outlet flange, and volute casing. The calculation of blower performance parameters such as total pressure, availability, and flow rate is based on Reynolds averaged Navier-Stokes equations and k - turbulence flow model. Findings The numerical results show that the change in operating conditions has a significant effect on the blower's performance, and that the resistance maintained inside the blower is higher for a higher impeller rotational speed.
Source link: https://doi.org/10.1108/ijius-07-2021-0076
Then is used to synthesize a local robust controller. For every operational point, the LSDP technique is exploited to create a local robust controller. The nonlinear PT326 blower is controlled by the local robust controller who changed between the local robust controllers by exploiting the gain scheduling device later.
Source link: https://doi.org/10.37394/23205.2020.19.36
Abstract of this paper Abstract A new device is being designed to monitor the airflow field at the inlet of a centrifugal blower unit. The effects of two parameters and their influence on overall sound pressure levels and discrete tones, as well as sound quality, are shown to assist in optimizing the layout. Laser Doppler velocity measurements reveals its effect on the air velocity in a centrifugal fan's radial direction. The benefits of the system include the reduction of air-handling system SPL by 1–3dBA and electricity savings by reducing energy use by virtue of energy conservation, with no change in the system airflow rate.
Source link: https://doi.org/10.1115/imece1999-0189
As a renewable energy source, the use of palm oil empty fruit bunches in the gasification process adds value to the empty bunches as a renewable energy source. Diesel with coconut shell charcoal, diesel with acacia wood charcoal, and diesel with EFB charcoal were among the test findings comparing biomass waste in conjunction with diesel fuel to run a diesel power plant for 20 min at a load of 10,000 W: diesel with coconut shell charcoal, diesel with acacia wood charcoal, and diesel with EFB charcoal. Coconut shell charcoal is the most effective and most appropriate biomass in the gasification process, according to the results, because coconut shell charcoal has a dense structure, and, at the time of the experiment, the coconut shell charcoal was filled 15 cm below the gas outlet pipe hole.
Source link: https://doi.org/10.3390/pr9112094
Abstract An air blower in an electric power plant died unexpectedly when a roller bearing in the drive motor fractured along its outer ring. Using a microscope and photoelectric direct reading spectrometer, metallurgical structures and chemical compositions of the bearing's matrix materials were investigated. SEM/EDS was used to investigate fracture and contact surface morphology and composition at the local level. The bearing grease's chemical and thermal properties were also investigated. Fatigue cracks emerged in the corners of the outer ring's interiors and grew to a point where a fracture could have occurred.
Source link: https://doi.org/10.31399/asm.fach.v03.c9001831
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