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Influence of Nanohelical Shape and Periodicity on Stem Cell Fate
ACS Nano, 2013Microenvironments such as protein composition, physical features, geometry, and elasticity play important roles in stem cell lineage specification. The components of the extracellular matrix are known to subsequently assemble into fibrillar networks in vivo with defined periodicity. However, the effect of the most critical parameter, which involves the
Rajat K, Das +4 more
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Stresses in, and the shape of, tree stems in forest monoculture
Journal of Theoretical Biology, 1989The mechanistic theory of the shape of tree stems, that is the variation in stem radius with height, assumes that the stem is a tapered vertical beam of circular cross-section fixed rigidly at ground level and subjected to vertical forces due to the weight of the stem and crown and horizontal forces due to wind.
P.W. West, D.R. Jackett, S.J. Sykes
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stem5: An initiative shaping the STEM narrative in Pakistan
2016 IEEE Integrated STEM Education Conference (ISEC), 2016stem5 is a STEM education initiative based at University of Engineering & Technology (UET) at Lahore, Pakistan. The initiative aims to rejuvenate STEM education in Pakistan by engaging university faculty and students in outreach activities targeted towards underprivileged students studying in the public school system.
Syed M. Imaad +3 more
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Factors Shaping Female Representation in STEM Career in Nigeria
African Journal of Economics, Politics and Social StudiesThe underrepresentation of females in Science, Technology, Engineering, and Mathematics (STEM) disciplines remains a significant concern in many parts of the world and Nigeria is not an exception. This paper investigates the multifaceted factors influencing the representation of females in STEM disciplines within the Nigerian context by drawing upon ...
Chioma Masi Onoshakpor +3 more
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Engineering the shape of stem cell tissues
2023A main challenge in biology is to understand the development of the human body, namely how cell and tissue shape transitions occur. Our organism is riddled with curved cell layers that withstand stress and react to it depending on their function, and this is where physics plays an important role, trying to unveil the forces and mechanical properties of
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Robust Segmentation and Tracking of Generic Shapes of Neuro-stem Cells
2011 IEEE First International Conference on Healthcare Informatics, Imaging and Systems Biology, 2011Given the time lapse images of human Neuro Stem Cells (hNSC) marked by fluorescent proteins, that are obtained from a confocal laser microscope, we present algorithms to identify, segment, track, and estimate statistical parameters of the cells. The structure of these cells are quite complex and irregular, which makes segmentation and tracking even ...
Ishwar Kulkarni +4 more
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Decoding the forces that shape muscle stem cell function
Skeletal muscle is a force-producing organ composed of muscle tissues, connective tissues, blood vessels, and nerves, all working in synergy to enable movement and provide support to the body. While robust biomechanical descriptions of skeletal muscle force production at the body or tissue level exist, little is known about force application on ...Jo, Nguyen, Penney M, Gilbert
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Shape of tree stems--a re-examination of the uniform stress hypothesis
Tree Physiology, 1994The transfer matrix method of structural analysis was used to examine the hypothesis that tree stems grow to a shape that tends to equalize the average bending plus axial stresses to which they are subjected along their length. The method and computational procedures were checked by comparing computed height-diameter profiles with those calculated ...
J, Morgan, M G, Cannell
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Shaping STEM Education: From Hesitation to Enthusiasm
Volume 7: Engineering Education; Fluids EngineeringAbstract A strong STEM foundation is essential for sustaining innovation, driving economic resilience, and preserving national competitiveness. Despite the United States’ longstanding leadership in science and technology, domestic participation in STEM fields—particularly in Engineering and Technology continues to face persistent ...
Ragavanantham Shanmugam +3 more
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Mouse embryo models built from stem cells take shape in a dish
Nature, 2022Neal D Amin +2 more
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