Browsing by Title
Now showing items 79995-80014 of 143540
-
Metal homeostasis in infectious disease: recent advances in bacterial metallophores and the human metal-withholding response
(Elsevier BV, 2016-12)A tug-of-war between the mammalian host and bacterial pathogen for nutrients, including first-row transition metals (e.g. Mn, Fe, Zn), occurs during infection. Here we present recent advances about three metal-chelating ... -
Metal impurities in n-type crystalline silicon for photovoltaics : simulation, synchrotron-based characterization, and mitigation
(Massachusetts Institute of Technology, 2016)Crystalline silicon is the dominant technology in the rapidly-growing photovoltaics (PV) industry, but significant cost reduction is still required before widespread grid parity is achieved. One-quarter of the cost of a ... -
Metal metaphosphate complexes for redox flow batteries
(Massachusetts Institute of Technology, 2016)In this thesis, possibility of using anionic metal complexes to limit crossover of active species in redox flow batteries was explored. A series of first row transition metal trimetaphosphate complexes as bis(triphenylph ... -
Metal oxide-oxygen electrodes and fuel cells
(Massachusetts Institute of Technology, 1960) -
Metal Poker
(1979-02)Can two potentially dishonest players play a fair game of poker without using any cards (e.g. over the phone)? This paper provides the following answers: 1. No. (Rigorous mathematical proof supplied. 2. Yes. (Correct & ... -
Metal price volatility : a study of informative metrics and the volatility mitigating effects of recycling
(Massachusetts Institute of Technology, 2011)Metal price volatility is undesirable for firms that use metals as raw materials, because price volatility can translate into volatility of material costs. Volatile material costs and can erode the profitability of the ... -
Metal production requirements for rapid photovoltaics deployment
(Royal Society of Chemistry, 2015-03)As global photovoltaics (PV) deployment grows, the required input materials need to be supplied at an increasing rate. In this paper, we quantify the effect of PV deployment levels on the scale of metal production. For ... -
Metal Sequestration and Antimicrobial Activity of Human Calprotectin Are pH-Dependent
(American Chemical Society (ACS), 2020)© 2020 American Chemical Society. Human calprotectin (CP, S100A8/S100A9 oligomer) is an abundant innate immune protein that sequesters transition metal ions in the extracellular space to limit nutrient availability and the ... -
Metal sequestration of the host-defense protein human calprotectin
(Massachusetts Institute of Technology, 2017)Transition metals are essential nutrients for all organisms. Microbial pathogens must acquire first-row transition metals such as manganese (Mn), iron (Fe), and zinc (Zn) to colonize the mammalian host and to cause disease. ... -
Metal to nonmetallic brazing
(Massachusetts Institute of Technology, Research Laboratory of Electronics, 1949) -
Metal transfer in gas metal arc welding
(Massachusetts Institute of Technology, 1989) -
Metal transport in the Aberjona river system : monitoring, modeling, and mechanisms
(Massachusetts Institute of Technology, 1995) -
Metal vapor vacuum arc switching
(Massachusetts Institute of Technology, 1984) -
Metal- and covalent-organic frameworks as solid-state electrolytes for metal-ion batteries
(The Royal Society, 2019-05)Society's long-standing energy demands have fuelled for centuries the quest for power-dense, portable and economically viable energy carriers. Since the birth of the first rechargeable battery in 1860, emerging battery ... -
Metal-Based Optical Probes for Live Cell Imaging of Nitroxyl (HNO)
(American Chemical Society (ACS), 2015-11)Nitroxyl (HNO) is a biological signaling agent that displays distinctive reactivity compared to nitric oxide (NO). As a consequence, these two reactive nitrogen species trigger different physiological responses. Selective ... -
Metal-based turn-on fluorescent probes for nitric oxide sensing
(Massachusetts Institute of Technology, 2006)Chapter 1. Metal-Based Turn-On Fluorescent Probes for Sensing Nitric Oxide. Nitric oxide, a reactive free radical, regulates a variety of biological processes. The absence of tools to detect NO directly, rapidly, specifically ... -
Metal-catalyzed reactions.
(Massachusetts Institute of Technology, 1998)A variety of organotransition metal complexes (M=Rh, Fe, and Ru) were synthesized and their use in catalysis investigated. Our two principal areas of interest were in the directed, catalytic hydroboration of olefins and ... -
Metal-coordination: using one of nature's tricks to control soft material mechanics
(Royal Society of Chemistry, 2013-11)Growing evidence supports a critical role of dynamic metal-coordination crosslinking in soft biological material properties such as self-healing and underwater adhesion. Using bio-inspired metal-coordinating polymers, ... -
Metal-dielectric antennas for efficient photon collection from diamond color centers
(The Optical Society, 2018)© 2018 Optical Society of America. A central challenge in quantum technologies based on atom-like defects is the e cient collection of the emitter’s fluorescence. Optical antennas are appealing as they o er directional ... -
Metal-enriched, subkiloparsec gas clumps in the circumgalactic medium of a faint z = 2.5 galaxy
(Oxford University Press, 2014-11)We report the serendipitous detection of a 0.2 L*, Lyα emitting galaxy at redshift 2.5 at an impact parameter of 50 kpc from a bright background QSO sightline. A high-resolution spectrum of the QSO reveals a partial ...
