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Displaying 16701 - 16725 of 74178

Novel Microporous Metal?Organic Framework Exhibiting High Acetylene and Methane Storage Capacities

June 1, 2015
Author(s)
Xing Duan, Chuande Wu, Shengchang Xiang, Wei Zhou, Taner N. Yildirim, Yuanjing Cui, Yu Yang, Banglin Chen, Guodong Qian
A new organic hexacarboxylic acid, 5,5',5"-(9H-carbazole-3,6,9-triyl) triisophthalic acid (H 6CTIA), was developed to construct its first microporous metal-organic framework Cu 6(CTUIA)d2^ (ZJU-70). With open metal sites and suitable pore sizes, this MOF

PASSING THE BATON: Message FROM THE INCOMING EDITOR-IN-CHIEF

June 1, 2015
Author(s)
Hamid Gharavi
This incoming Editor In Chief's (EIC) message is expected to appear in the next issue of the IEEE wireless communications. The editorial team will be under the leadership of the new EIC for a period of three years.

Progress on the Optical Lattice Clock

June 1, 2015
Author(s)
Andrew D. Ludlow, Jun Ye
We summarize recent research in the development of the optical lattice clock, with particular focus on the ytterbium and strontium lattice clocks being developed at NIST and JILA. We highlight recent progress in improving the stability and uncertainty of

Small-Angle X-ray Scattering of Ionic Liquids

June 1, 2015
Author(s)
Fan Zhang, Joshua A. Hammons, Jan Ilavsky
Small angle X-ray scattering (SAXS) is a powerful technique that is used to resolve the size and structure of phases on the nanometer scale, within a sample. While these features may also be observed with other techniques, such as: electron microscopy or

SOLID PHASE MICROEXTRACTION SORBENTS

June 1, 2015
Author(s)
Thomas J. Bruno, Paris D. Svoronos Cambanas
While trapping sorbents have been used for many years in headspace analysis (most commonly with gas chromatography), the modern techniques of solid phase microanalysis (SPME) are particularly applicable to survey analyses [1]. In the following tables, we

STATIONARY PHASES FOR POROUS LAYER OPEN TUBULAR COLUMNS

June 1, 2015
Author(s)
Thomas J. Bruno, Paris D. Svoronos Cambanas
The practical application of solid adsorbents in capillary chromatography typically makes use of porous layer open tubular (PLOT) columns. Early capillary PLOT columns suffered from detector spiking due to particulates becoming dislodged and entering the

The Redefinition of the SI: Impact on Calibration Services at NIST

June 1, 2015
Author(s)
Neil M. Zimmerman, Jon R. Pratt, Michael R. Moldover, David B. Newell, Gregory F. Strouse
As most readers are probably at least vaguely aware, it is likely that the SI system of units will be redefied in 2018. This redefinition would fundamentally change the logical structure of the SI, with one result being a substantial change in how mass is

Transportation Effect and Basic Characteristics of Ni-Cr Based Metal-Foil Standard Resistors Examined in a Trilateral Comparison Pilot Study between KRISS, NIST and NMIJ

June 1, 2015
Author(s)
Marlin E. Kraft, Randolph E. Elmquist, Nobu-hisa Kaneko, Wan-Seop Kim, Dong Hun Chae, Takehiko Oe
The transportation effect and other important characteristics of 100-Ω standard resistors of a new construction have been studied. For transportation effect, four resistors have been transported by air between three national metrology institutes: the Korea

Dynamics of Magnetic Nanoparticles and Nanodevices

May 31, 2015
Author(s)
Stephen E. Russek, Eric R. Evarts, Robert J. Usselman
Nanoscale magnetic devices and particles are being developed for a wide variety of applications including magnetic memory, nanoscale sensors, magnetic resonance imaging (MRI) agents, and therapeutic agents. Magnetic nanoparticles are also endogenous to the
Displaying 16701 - 16725 of 74178