Results 111 to 120 of about 4,939,313 (338)
U.S. Customs and Border Protection: Trade Facilitation, Enforcement, and Security [PDF]
, 2013 [Excerpt] This report describes and analyzes import policy and CBP’s role in the U.S. import process. (The report does not cover CBP’s role in the U.S. export control system.) The first section of the report describes the three overarching goals of U.S ...
Jones, Vivian C, Rosenblum, Marc R
core +2 more sources
Granular discharge and clogging for tilted hoppers
, 2009 We measure the flux of spherical glass beads through a hole as a systematic function of both tilt angle and hole diameter, for two different size beads.
C. Mankoc +29 more
core +1 more source
Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions
FEBS Letters, EarlyView.We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva +10 more
wiley +1 more source
Dynamic shear jamming in dense granular suspensions under extension
, 2016 Unlike dry granular materials, a dense granular suspension like cornstarch in water can strongly resist extensional flows. At low extension rates, such a suspension behaves like a viscous liquid, but rapid extension results in a response where stresses ...
Han, Endao +3 more
core +1 more source
FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
wiley +1 more source
The Mouride Trade Diaspora and the Making of a Vernacular Urbanism [PDF]
lo Squaderno, 2016 Global flows, multiple identities and cross-border activities represented by transnational migrant communities test prior assumptions critically regarding the nation-state functioning as a container of social, economic and political processes (Grille et ...
Peter Volgger
doaj
Two-dimensional turbulence dispersion in a closed domain: Influence of confinement and geometry
AIP Advances, 2019 The spreading of passive particles immersed in a two-dimensional turbulent flow confined within a closed domain is studied analytically and numerically. The primary goal is to investigate the effect of the confinement and the geometry of the container on
L. M. Flores Ramírez, L. Zavala Sansón
doaj +1 more source
Heat pipe thermionic diode power system Patent [PDF]
, 1970 Electric power system utilizing thermionic plasma diodes in parallel and heat pipes as ...
Byrd, A. W.
core +1 more source
FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
wiley +1 more source
Microgravity: A Teacher's Guide With Activities in Science, Mathematics, and Technology [PDF]
, 1997 The purpose of this curriculum supplement guide is to define and explain microgravity and show how microgravity can help us learn about the phenomena of our world.
Rogers, Melissa J. B. +2 more
core +1 more source