Results 101 to 110 of about 380,078 (313)

Positive solutions of a third-order three-point boundary-value problem

open access: yesElectronic Journal of Differential Equations, 2008
We obtain upper and lower estimates for positive solutions of a third-order three-point boundary-value problem. Sufficient conditions for the existence and nonexistence of positive solutions for the problem are also obtained.
Bo Yang
doaj  

A Systematic Study of GelMA‐Carbopol Bioinks for High‐Fidelity Extrusion 3D Bioprinting at Physiological Temperatures

open access: yesAdvanced Healthcare Materials, EarlyView.
Gonzalez Martinez and collaborators develop a strategy to formulate high performance GelMA‐based bioinks with low solids contents. The resulting bioinks enable 3D bioprinting at 37 °C of high‐fidelity structures with tunable mechanical properties that support high cell viability and function.
David A. González‐Martínez   +8 more
wiley   +1 more source

Resonance in a Cone-Topped Tube

open access: yesInternational Scholastic Journal of Science, 2011
The relationship between ratio of the upper opening diameter of a cone-topped cylinder to the cylinder diameter,and the ratio of the length of the air column to resonant period was examined. Plastic cones with upper openings ranging from 1.3 cm to 3.6 cm
Angus Cheng-Huan Chia   +1 more
doaj  

Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing

open access: yesAdvanced Materials, EarlyView.
This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long   +26 more
wiley   +1 more source

Interview with Paul J. Cone

open access: yes, 1975
An interview with Paul J. Cone about his experiences during World War II.
Cone, Nancy L.
core  

SIMPLE AND COMPLEX IN THE APPLICATIONS [PDF]

open access: yesFiabilitate şi Durabilitate, 2012
In descriptive geometry teaching, mean of thought training and plane representation ofthe space, the theoretical base of the technical design, there are some specific aspects which,because a short time of the educational plans of the students, in ...
Ivona PETRE, Carmen POPA
doaj  

CONSIDERATIONS ON THE SHAPE OF DISCHARGING CHAMBERS FOR THE ELECTRO-HYDRAULIC DEFORMING METHOD

open access: yesJournal of Industrial Design and Engineering Graphics, 2022
The electro-hydraulic plastic deforming method belongs to non-conventional plastic deforming techniques class. The shape of the discharging chamber and of the energy concentrators influences workpiece machining, along with the other parameters of the ...
Vanda – Ligia DANAILA   +1 more
doaj  

Bioinspired Adaptive Sensors: A Review on Current Developments in Theory and Application

open access: yesAdvanced Materials, EarlyView.
This review comprehensively summarizes the recent progress in the design and fabrication of sensory‐adaptation‐inspired devices and highlights their valuable applications in electronic skin, wearable electronics, and machine vision. The existing challenges and future directions are addressed in aspects such as device performance optimization ...
Guodong Gong   +12 more
wiley   +1 more source

Mitochondrion in a cone photoreceptor pedicle: movie

open access: yes, 2011
Presents movie showing the three-dimensional details of cone pedicle mitochondria generated using electron tomography. Pedicles averaged five medium-sized mitochondria clustered far from the active zones.
Perkins, Guy A.   +3 more
core   +1 more source

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