We review the role of stellar flybys and encounters in shaping planet-forming discs around young stars, based on published literature this topic last 30 years. Since most stars $$\le ~2$$ Myr old harbour protoplanetary discs, tidal perturbations affect planet formation. First, we examine probability experiencing or encounters: More than 50% with a typical star-forming environment should experie...

Regarding the importance of ring spinning method among spinning systems, great potentials exist for research about on the improvement of the quality and properties of ring spun yarn. This study aims to improve yarn quality by changing the shape and dimensions of spinning triangle through forming a groove in the middle zone of the front darfting roller with a curvature of 5 to 7 mm. For the to...

Machining of bulk Ti6Al4V is relatively difficult owing to low elastic modulus, high work hardening tendency, stickiness, poor thermal conductivity besides formation long continuous chips during machining. Near net shaping through green machining could be a viable alternative conventional milling procedure. Herein, fabrication dental root and spinal plate equivalents was successfully demonstrat...

Thin fiber reinforced polymer (FRP) composites are widely implemented in adaptive and morphing structures. However, realization of the necessary complex 3-dimensional FRP structures requires use expensive molds thereby limiting design space flexibility. Using elastic strain energy pre-stretched membranes holds potential for addressing this challenge. In work, a novel manufacturing technique fab...

One of the major motifs in collective or swarm intelligence is that, even though individuals follow simple rules, the resulting global behavior can be complex and intelligent. In artificial swarm systems, such as swarm robots, the goal is to use systems that are as simple and cheap as possible, deploy many of them, and coordinate them to conduct complex tasks that each individual cannot accompl...

RATIONALE L-type Ca(2+) (Ca(V)1.2) channels shape the cardiac action potential waveform and are essential for excitation-contraction coupling in heart. A gain-of-function G406R mutation in a cytoplasmic loop of Ca(V)1.2 channels causes long QT syndrome 8 (LQT8), a disease also known as Timothy syndrome. However, the mechanisms by which this mutation enhances Ca(V)1.2-LQT8 currents and generates...