Results 191 to 200 of about 54,782 (257)
β‐Catenin/c‐Myc Axis Modulates Autophagy Response to Different Ammonia Concentrations
Ammonia, detoxified by the liver into urea and glutamine, impacts autophagy differently at varying levels. Low ammonia activates autophagy via c‐Myc and β‐catenin, while high levels suppress it. Using Huh7 cells and Spf‐ash mice, c‐Myc's role in cytoprotective autophagy is revealed, offering insights into hyperammonemia and potential therapeutic ...
S. Sergio +11 more
wiley +1 more source
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt +8 more
wiley +1 more source
In this review, the current state of light‐assisted 3D printing as it pertains to engineering musculoskeletal tissues including bone, cartilage, skeletal muscle, tendon, and ligaments is summarized. Common printing techniques, photoreactive materials, and study design choices are compiled and reviewed.
Meagan Morgan, Bin Zhang, Roger Narayan
wiley +1 more source
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth +6 more
wiley +1 more source
Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu +10 more
wiley +1 more source
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Design of A 0.8GHz-3GHz Duty-Cycle Corrector With a 20%-80% Input Duty Cycle
2019 IEEE International Conference on Consumer Electronics - Taiwan (ICCE-TW), 2019An analog duty cycle correction circuit using a novel pulsewidth modification cell. We correct the duty-cycle by changing the phase of the voltage. Our calibration allows the input duty cycle to range from 20% to 80%, and the circuit corrects the duty cycle to 50%.
Chien Yu Lin, Heng Shou Hsu
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A voltage-controlled duty-cycle oscillator
IEEE Journal of Solid-State Circuits, 1990A voltage-controlled duty-cycle oscillator (VCDCO) developed for use with integrated silicon sensors is described. The circuit's transfer function is, to first order, completely independent of component values. Measured results indicate that the circuit is capable of resolving input voltage changes as small as 6 mu V in a 2000- mu s period and has a ...
Richard R. Spencer, James B. Angell
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