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High-resolution structure of a new crystal form of BamA POTRA4-5 from Escherichia coli.
In Escherichia coli, the BAM complex is employed to mediate correct folding of the outer membrane (OM) proteins into β-barrels and their insertion into the OM. BamA, which is an essential componentExpand
P-wave tomography and dynamics of the crust and upper mantle beneath western Tibet
Abstract The continental collision between the Indian and Asian plates plays a key role in the geologic and tectonic evolution of the Tibetan plateau. In this article we present high-resolutionExpand
Colorimetric and bare eye determination of urinary methylamphetamine based on the use of aptamers and the salt-induced aggregation of unmodified gold nanoparticles
AbstractMethamphetamine (METH) is second only to marijuana as a widely used illicit drug. We are presenting a simple colorimetric assay for sensitive and visual detection of METH in human urine usingExpand
Assortment Optimization under the Paired Combinatorial Logit Model
We consider uncapacitated assortment problems under the paired combinatorial logit model, where the goal is to fi nd a set of products to maximize the expected revenue obtained from each customer. Expand
Preparation, mechanical and anti-friction performance of MXene/polymer composites
Abstract In this study, a Ti 3 C 2 nanomaterial and Ti 3 C 2 /UHMWPE (ultrahigh molecular weight polyethylene) nanocomposites were prepared. The morphology, structure and properties of the Ti 3 C 2Expand
Origin of DC voltage in type II superconducting flux pumps: field, field rate of change, and current density dependence of resistivity
Superconducting flux pumps are the kind of devices which can generate direct current into superconducting circuit using external magnetic field. The key point is how to induce a dc voltage across theExpand
Moisture recovery from gas-fired boiler exhaust using membrane module array
Abstract: Many studies on the moisture recovery of flue gas by the membrane method use a single ceramic membrane tube to recover the simulated flue gas. In this paper, a membrane module arrayExpand
Pricing under the Generalized Extreme Value Models with Homogeneous Price Sensitivity Parameters
We consider pricing problems when customers choose according to the generalized extreme value (GEV) models and the products have the same price sensitivity parameter. First, we consider the staticExpand
A method for pre-determining the optimal remanufacturing point of lithium ion batteries
Abstract A new way to determine the optimal remanufacturing point of lithium ion batteries for electric vehicle has been proposed in this paper. The proposed optimal remanufacturing point can avoidExpand
Base-induced mechanistic variation in palladium-catalyzed carbonylation of aryl iodides.
  • Yanhe Hu, J. Liu, +4 authors A. Lei
  • Chemistry, Medicine
  • Journal of the American Chemical Society
  • 9 February 2010
A mechanism, which is distinct from the traditional one when sodium alkoxide was used instead of tertiary amines, was proposed for the alkoxycarbonylation of aryl iodides. The catalytic cycle wasExpand