Browsing MIT Open Access Articles by Title
Now showing items 4839-4858 of 55760
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Calcium Causes a Conformational Change in Lamin A Tail Domain that Promotes Farnesyl-Mediated Membrane Association
(Elsevier, 2013-05)Lamin proteins contribute to nuclear structure and function, primarily at the inner nuclear membrane. The posttranslational processing pathway of lamin A includes farnesylation of the C-terminus, likely to increase membrane ... -
Calcium Dynamics of Ex Vivo Long-Term Cultured CD8+ T Cells Are Regulated by Changes in Redox Metabolism
(Public Library of Science, 2016-08)T cells reach a state of replicative senescence characterized by a decreased ability to proliferate and respond to foreign antigens. Calcium release associated with TCR engagement is widely used as a surrogate measure of ... -
Calcium Ion Gradients Modulate the Zinc Affinity and Antibacterial Activity of Human Calprotectin
(American Chemical Society, 2012-10)Calprotectin (CP) is an antimicrobial protein produced and released by neutrophils that inhibits the growth of pathogenic microorganisms by sequestering essential metal nutrients in the extracellular space. In this work, ... -
Calcium ions tune the zinc-sequestering properties and antimicrobial activity of human S100A12
(Royal Society of Chemistry, 2015-10)Human S100A12 is a host-defense protein expressed and released by neutrophils that contributes to innate immunity. Apo S100A12 is a 21 kDa antiparallel homodimer that harbors two Ca(II)-binding EF-hand domains per subunit ... -
Calcium Regulation of an Actin Spring
(Elsevier, 2009-08)Calcium is essential for many biological processes involved in cellular motility. However, the pathway by which calcium influences motility, in processes such as muscle contraction and neuronal growth, is often indirect ... -
Calcium-Antimony Alloys as Electrodes for Liquid Metal Batteries
(Electrochemical Society, 2014-09)The performance of a calcium-antimony (Ca-Sb) alloy serving as the positive electrode in a Ca∥Sb liquid metal battery was investigated in an electrochemical cell, Ca(in Bi) | LiCl-NaCl-CaCl[subscript 2] | Ca(in Sb). The ... -
Calcium-based multi-element chemistry for grid-scale electrochemical energy storage
(Nature Publishing Group, 2016-03)Calcium is an attractive material for the negative electrode in a rechargeable battery due to its low electronegativity (high cell voltage), double valence, earth abundance and low cost; however, the use of calcium has ... -
Calcium-dependent molecular fMRI using a magnetic nanosensor
(Nature Publishing Group, 2018-04)Calcium ions are ubiquitous signalling molecules in all multicellular organisms, where they mediate diverse aspects of intracellular and extracellular communication over widely varying temporal and spatial scales1. Though ... -
Calcium-induced tetramerization and zinc chelation shield human calprotectin from degradation by host and bacterial extracellular proteases
(Royal Society of Chemistry, The, 2015-11)Calprotectin (CP, S100A8/S100A9 oligomer, MRP-8/14 oligomer, calgranulins A and B) is a protein component of the innate immune system that contributes to the metal-withholding response by sequestering bioavailable transition ... -
Calcium-triggered fusion of lipid membranes is enabled by amphiphilic nanoparticles
(National Academy of Sciences, 2020-07)Lipid membrane fusion is an essential process for a number of critical biological functions. The overall process is thermodynamically favorable but faces multiple kinetic barriers along the way. Inspired by nature's ... -
Calculating Expectation Shift
(Institute of Electrical and Electronics Engineers (IEEE), 2011)This paper concerns the problem of calculating expectation shift due to variability which tends to occur whenever the function of a random variable is nonlinear and especially tends to occur in the neighborhood of a local ... -
Calculating phase-coherent quantum transport in nanoelectronics with ab initio quasiatomic orbital basis set
(American Physical Society, 2010-11)We present an efficient and accurate computational approach to study phase-coherent quantum transport in molecular and nanoscale electronics. We formulate a Green’s-function method in the recently developed ab initio ... -
Calculating the band structure of 3C-SiC using sp[superscript 3]d[superscript 5]s* + ∆ model
(Springer Berlin Heidelberg, 2019-02)We report on a semiempirical tight-binding model for 3C-SiC including the effect of sp[superscript 3]d[superscript 5]s* orbitals and spin–orbit coupling (∆). In this work, we illustrate in detail the method to develop such ... -
Calculating the band structure of 3C-SiC using sp[superscript 3]d[superscript 5]s* + ∆ model
(Springer Berlin Heidelberg, 2019-02)We report on a semiempirical tight-binding model for [subscript 3]C-SiC including the effect of sp[superscript 3]d[superscript 5]s* orbitals and spin–orbit coupling (∆). In this work, we illustrate in detail the method to ... -
Calculating track thrust with track functions
(American Physical Society, 2013-08)In e[superscript +]e[superscript -] event shapes studies at LEP, two different measurements were sometimes performed: a “calorimetric” measurement using both charged and neutral particles and a “track-based” measurement ... -
Calculating Track-Based Observables for the LHC
(American Physical Society, 2013-09)By using observables that only depend on charged particles (tracks), one can efficiently suppress pileup contamination at the LHC. Such measurements are not infrared safe in perturbation theory, so any calculation of ... -
Calculation and measurement of higher order mode losses in ITER ECH transmission lines
(Institute of Electrical and Electronics Engineers, 2009-11)The ITER transmission lines (TLs) must be designed to deliver 20 MW from a 24 MW, 170 GHz gyrotron system. Miter bends are the main source of loss for these highly overmoded, corrugated, cylindrical waveguide TLs. Previous ... -
Calculation of Air Temperatures above the Urban Canopy Layer from Measurements at a Rural Operational Weather Station
(American Meteorological Society, 2013-02)Urban canopy models (UCMs) are being used as urban-climate prediction tools for different applications including outdoor thermal comfort and building energy consumption. To take advantage of their low computational cost, ... -
Calculation of B[superscript 0] → K[superscript *0]μ[superscript +]μ[superscript -] and B[0 over s] → φμ[superscript +]μ[superscript -] Observables Using Form Factors from Lattice QCD
(American Physical Society, 2014-05)We calculate the differential branching fractions and angular distributions of the rare decays B[superscript 0] → K[superscript *0]μ[superscript +]μ[superscript -] and B[0 over s] → φμ[superscript +]μ[superscript -], using ... -
Calculation of Generalized Polynomial-Chaos Basis Functions and Gauss Quadrature Rules in Hierarchical Uncertainty Quantification
(Institute of Electrical and Electronics Engineers (IEEE), 2014-04)Stochastic spectral methods are efficient techniques for uncertainty quantification. Recently they have shown excellent performance in the statistical analysis of integrated circuits. In stochastic spectral methods, one ...