The emerging of single‐atom catalysts (SACs) offers a great opportunity for the development advanced energy storage and conversion devices due to their excellent activity durability, but actual mass production high‐loading SACs is still challenging. Herein, facile green boron acid (H 3 BO )‐assisted pyrolysis strategy put forward synthesize by only using chitosan, cobalt salt H as precursor, ef...

In the present study, the effects of red and blue LED lights on the accumulation of ascorbic acid (AsA) were investigated in the juice sacs of three citrus varieties, Satsuma mandarin, Valencia orange, and Lisbon lemon. The results showed that the blue LED light treatment effectively increased the AsA content in the juice sacs of the three citrus varieties, whereas the red LED light treatment d...

Emphysema and influenza directly affect alveolar sacs and cause problems in lung performance during the breathing cycle. In this study, the effects of Emphysema and Influenza on alveolar sac’s air flow characteristics are investigated through Computational Fluid Dynamics (CFD) simulation. Both normal and Emphysemic alveolar sac models with varying collapsed volumes resulting from influenza viru...

AIM To evaluate whether passive ultrasonic irrigation (PUI) of 2.5% NaOCl would dissolve necrotic pulp tissue from simulated accessory root canals (SACs) better than passive placement of the irrigant, when temperature was equilibrated between the two treatments. METHODOLOGY Transparent root canal models (n = 6) were made from epoxy resin. SACs of 0.2 mm diameter were placed at defined angles ...

The lungs of birds move air in only one direction during both inspiration and expiration through most of the tubular gas-exchanging bronchi (parabronchi), whereas in the lungs of mammals and presumably other vertebrates, air moves tidally into and out of terminal gas-exchange structures, which are cul-de-sacs. Unidirectional flow purportedly depends on bellowslike ventilation by air sacs and ma...

Changes in swimbladder morphology in an Atlantic herring Clupea harengus with pressure were examined by magnetic resonance imaging of a dead fish in a purpose-built pressure chamber. Swimbladder volume changed with pressure according to Boyle's Law, but compression in the lateral aspect was greater than in the dorsal aspect. This uneven compression has a reduced effect on acoustic backscatterin...

background: secretory proteins of ige receptor activated mast cells and basophils play a pivotal role in the generation of immediate and long term immune responses in allergy and type i hypersensitivity. objective: the present study aims to generate a 2-d map and profile of proteins secreted from a high secretory variant of the rat basophilic leukemia cell line, rbl-2h3.1, which in view of the ...

Portable electrochemical synthesis of H2O2, which is widely used for disinfection, sterilization, and waste treatment, has attracted increasing attention. However, low atomic utilization efficiency by-product disposal during the electrocatalysts are inevitable. Based on advantages single-atom catalysts (SACs) towards H2O2 via a 2e− transfer oxygen reduction reaction, this work presents ZnNC SAC...

Singe-atom catalysts (SACs), as heterogeneous catalysts, have attracted increasing attention in recent years owing to their numerous advantages the field of electrocatalysis, such a high atom-utilization rate and unique structural characteristics. In this review, we introduce various preparation methods for obtaining SACs based on top-down bottom-up synthesis strategies corresponding research p...

The acoustic properties of natural fiber-reinforced composites should be identified before using these materials in various engineering applications including sound and vibration isolation. This study investigates the effects sample thickness fiber/resin ratio on performance jute luffa biocomposites. For this purpose, composite samples with different thicknesses fiber/epoxy ratios are manufactu...