Results 21 to 30 of about 42,262 (295)

Employing a fan to improve the wintery heating performance of solar air collectors with phase-change material: An experimental comparison

open access: yesCase Studies in Thermal Engineering, 2023
Solar Air Collectors integrated with Phase-Change Material (SAC-PCM) were widely used for wintery heating with the superiority of overcoming the mismatch shortcoming between supply and demand time from solar heating.
Renfei Bo, Wenkai Fu, Xi Meng, Ge Zhang
doaj   +1 more source

MORPHOLOGICAL STUDY OF AIR SACS (Sacci pneumatici) IN WHITE CHEEKED BULBUL(Pycnonotus leucotis) [PDF]

open access: yesBasrah Journal of Veterinary Research, 2016
The study was designed to observed the anatomical features of the air sacs (Sacci pneumatici)inWhite Cheeked Bulbul (Pycnonotus leucotis) Ten healthy birds from white cheeked bulbul used,five birds extract the part of trachea and incision it after ...
Shaymaa K. Jaifar, Alaa A. Sawad
doaj   +1 more source

On the occurrence of lateral openings and fossae (pleurocoels) in the thoracic vertebrae of neornithine birds and their functional significance [PDF]

open access: yesVertebrate Zoology, 2021
The occurrence of lateral openings and pleurocoels (lateral fossae) in the corpus of the thoracic vertebrae of extant and fossil neornithine birds is reviewed, with both features having been identified as osteological correlates of the avian pulmonary ...
Gerald Mayr
doaj   +3 more sources

Eco-Cost Analysis of Split Air-Conditioner Using Activity-Based Costing Method

open access: yesIEEE Access, 2020
Split air conditioner (SAC) plays a critical role for temperature control of buildings. In recent years, the manufacturing process of SAC tends to consider energy-saving and environmental protection factors to reduce air pollution and alleviate energy ...
Guoyin Fu   +5 more
doaj   +1 more source

Influence of nocturnal thermal insulation on thermal performance improvement of solar air collector with phase-change material

open access: yesCase Studies in Thermal Engineering, 2023
Solar air collectors (SAC) are widely used for the wintery heating, but they have a mismatch shortcoming between supply and demand periods of heat quantity.
Renfei Bo   +4 more
doaj   +1 more source

Effect of a System Air Conditioner on Local Air Quality in a Four-bed Ward

open access: yesAerosol and Air Quality Research, 2020
In a ward where many patients are hospitalized, effective ventilation is important because airborne viruses may cause secondary infection. This study investigates the changes in the air quality in a four-bed ward according to the use of a ventilation ...
Jungsuk Lee   +4 more
doaj   +1 more source

Autonomous air combat decision‐making of UAV based on parallel self‐play reinforcement learning

open access: yesCAAI Transactions on Intelligence Technology, 2023
Aiming at addressing the problem of manoeuvring decision‐making in UAV air combat, this study establishes a one‐to‐one air combat model, defines missile attack areas, and uses the non‐deterministic policy Soft‐Actor‐Critic (SAC) algorithm in deep ...
Bo Li   +6 more
doaj   +1 more source

Modeling of a solar air collector heat transfer coefficient with regression algorithms

open access: yesFirat University Journal of Experimental and Computational Engineering, 2022
Solar air collectors (SAC) are thermodynamic systems that convert solar energy into useful fluid energy. SACs are very common in heating, cooling, food drying, and many other low-temperature applications.
Mehmet Daş, Ebru Kavak Akpınar
doaj   +1 more source

Exploration of the effect of two-axis PLC solar tracking system on the thermal performance of solar air collector

open access: yesCase Studies in Thermal Engineering, 2021
In the present study, the effects of a solar tracking system on the thermal performance of the solar air collector (SAC) were investigated in detail. Two SACs of equal size were designed to reveal the effect of the solar tracking system.
Mehmet Das
doaj   +1 more source

Relationship of the anterior ethmoid sinus to the lacrimal sac: a computed tomography study

open access: yesBrazilian Journal of Otorhinolaryngology, 2022
Objective: To analyze the anatomical relationship between the lacrimal sac and the agger nasi cell on Computed Tomography (CT); to correlate the right and left sides on each scan.
Beatriz de Costa Remor   +6 more
doaj   +1 more source

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