Results 11 to 20 of about 87,352 (306)
Johnson Matthey Technology Review, 2023 Johnson Matthey’s annual review of the platinum group metal (pgm) markets was published on 15th May 2023, providing an outlook for pgm supply and demand for 2023.
A. Cowley
semanticscholar +1 more source
Energy Materials, 2023 Exploring high-activity, low-cost platinum group metal-free (PGM-free) oxygen reduction reaction (ORR) electrocatalysts to replace precious metal Pt is critical for large-scale fuel cell applications. Owing to their wide source, controllable composition,
Kai Wei, Xian Wang, J. Ge
semanticscholar +1 more source
Proton Exchange Membrane (PEM) Fuel Cells with Platinum Group Metal (PGM)-Free Cathode
Automotive Innovation, 2021 Proton exchange membrane (PEM) fuel cells have gained increasing interest from academia and industry, due to its remarkable advantages including high efficiency, high energy density, high power density, and fast refueling, also because of the urgent ...
L. Du, Gaixia Zhang, Shuhui Sun
semanticscholar +1 more source
Are geometric morphometric analyses replicable? Evaluating landmark measurement error and its impact on extant and fossil Microtus classification. [PDF]
, 2020 Geometric morphometric analyses are frequently employed to quantify biological shape and shape variation. Despite the popularity of this technique, quantification of measurement error in geometric morphometric datasets and its impact on statistical ...
Adams D. C. +8 more
core +1 more source
Advances in Materials, 2020 Increasing catalytic activity and durability of atomically dispersed metal–nitrogen–carbon (M–N–C) catalysts for the oxygen reduction reaction (ORR) cathode in proton‐exchange‐membrane fuel cells remains a grand challenge.
Yanghua He +17 more
semanticscholar +1 more source
The pgm locus and pigmentation phenotype in Yersinia pestis
Genetics and Molecular Biology, 2006 The pigmentation (pgm) locus is a large unstable area of the Yersinia pestis chromosome composed of a segment of iron acquisition (HPI) linked to a pigmentation segment. In this work we examined the mobility of HPI and the pigmentation segment in three Y.
Tereza Cristina Leal-Balbino +5 more
doaj +1 more source
Color Confinement in Perturbation Theory from a Topological Model, [PDF]
, 1995 Color confinement by the mechanism of Kugo and Ojima can treat confinement of any quantized color carrying fields including dynamical quarks. However, the non-perturbative condition for this confinement has been known to be satisfied only in the pure ...
Hata, Hiroyuki, Taniguchi, Yusuke
core +3 more sources
On the distinguishability of random quantum states [PDF]
, 2006 We develop two analytic lower bounds on the probability of success p of identifying a state picked from a known ensemble of pure states: a bound based on the pairwise inner products of the states, and a bound based on the eigenvalues of their Gram matrix.
Ashley Montanaro +19 more
core +5 more sources
Energy & Environmental Science, 2020 Establishing new reactivity map descriptor of TOF–SD for PGM-free Fe–N–C catalysts ORR activity.
Mathias Primbs +16 more
semanticscholar +1 more source
Rheological properties of saliva substitutes containing mucin, carboxymethylcellulose or polyethylenoxide [PDF]
, 1984 Apparent viscosities at different shear rates were measured for 3 types of saliva substitutes: (a) mucin-containing saliva; (b) substitutes based upon carboxymethylcellulose (CMC), and (c) solution of polyethylenoxide (PEO). The apparent viscosities were
's-Gravenmade, E.J. +4 more
core +11 more sources