Results 221 to 230 of about 249,250 (259)

Tandem solid-phase extraction of atrazine ozonation products in water

Journal of Chromatography A, 2000
The preconcentration of aqueous solutions containing atrazine degradation products was investigated using solid-phase extraction on octadecyl and cation-exchanger silica phases. The retention and elution steps were studied and evaluated separately in order to define and optimize the critical experimental parameters involved.
Nelieu, Sylvie, Stobiecki, M., Einhorn, Jacques   +2 more
openaire   +3 more sources

Efficient Solid-Phase-Based Total Synthesis of the Bisintercalator TANDEM

The Journal of Organic Chemistry, 2005
[reaction: see text] In this article, the first solid-phase-based total synthesis of TANDEM, a synthetic analogue of triostin A, is described. In initial studies, the synthesis incorporated depsipeptide formation, introduction of chromophores, and disulfide bond formation on the solid phase, prior to a final solution-phase macrolactamization, to give ...
Malkinson, J. P., Anim, M. K., Zloh, M., Searcey, M., Hampshire, A. J., Fox, K. R.   +5 more
openaire   +3 more sources

MicroRNA Pools Synthesized Using Tandem Solid-Phase Oligonucleotide Synthesis

The Journal of Organic Chemistry, 2023
Herein, we describe a new approach to make pools of microRNA targeting breast cancer cells. The microRNA pools were synthesized at once on the same solid support using the "Tandem Oligonucleotide Synthesis" strategy. We make up to four consecutive microRNAs (miR129-1-5p, miR31, miR206, and miR27b-3p) using 2'/3'OAc nucleotide phosphoramidites, with the
Sofie Slott, Kira Astakhova
openaire   +2 more sources

A simultaneously phase-matched tandem optical parametric oscillator

IEEE Journal of Quantum Electronics, 1998
We report the theoretical analysis of a simultaneously phase-matched tandem optical parametric oscillator (STOPO) in which the principal OPO generates a signal which pumps a secondary OPO. Both OPO interactions are assumed to be phase-matched in a single crystal. The cavity has high Q for the signal produced by the principal OPO and has lower Q for the
G.T. Moore, K. Koch, M.E. Dearborn, M. Vaidyanathan   +3 more
openaire   +1 more source

Wake symmetry impacts the performance of tandem hydrofoils during in-phase and out-of-phase oscillations differently

Physical Review E, 2020
The hydrodynamics of two oscillating foils in side-by-side configuration is numerically investigated for in-phase and out-of-phase pitching at Reynolds number of 4000 and Strouhal numbers of St=0.25-0.5. The effects of phase difference (in-phase and out-of-phase) and Strouhal number on symmetric attributes of the wake and unsteady propulsive ...
Ahmet Gungor, Arman Hemmati
openaire   +2 more sources

Phasing of tandem crystals for nonlinear optical frequency conversion

Optics Communications, 1996
Abstract We point out that tandem nonlinear crystals for optical frequency conversion made of the same material can in most cases be oriented to obtain walk-off reversal, as well as the same sign and magnitude of the nonlinear coefficient. This is always possible when there are two o-rays, and in most cases is possible when there are two e-rays.
Gerald T. Moore, Karl Koch
openaire   +1 more source

Tandem-phase-modulator-based optical isolator in silicon

39th European Conference and Exhibition on Optical Communication (ECOC 2013), 2013
Disclosed are structures and methods for optical isolation based on tandem phase modulators in a long interferometer that advantageously provides low-loss, broadband isolation in a photonic integrated circuit without requiring special materials or fabrication steps.
C.R. Doerr, L. Chen, D. Vermeulen
openaire   +1 more source

Polarization Modulator Base On Amplitude And Phase MZM Tandem

2018Systems of Signal Synchronization, Generating and Processing in Telecommunications (SYNCHROINFO), 2018
The development of fiber-optic telecommunication and sensory systems with polarization multiplexing is restrained by the possibility of complete suppression of one of the side bands or carrier frequency respectively, which affects the errors in the recovery of information telecommunications signals, as well as the accuracy and range of measurements ...
I. M. Gabdulkhakov, O. G. Morozov, L. M. Faskhutdinov, A. Zh. Sakhabutdinov, I. I. Nureev   +4 more
openaire   +1 more source

Endovascular management of extracranial occlusions at the hyperacute phase of stroke with tandem occlusions

Journal of Neuroradiology, 2018
The management of cervical artery occlusions in hyperacute stroke with tandem cervical/intracranial occlusions has not yet become standardized, especially when the circle of Willis is effective.We retrospectively analyzed the safety and accuracy of current approaches to manage the cervical occlusion in consecutive patients with tandem occlusions ...
M-A, Labeyrie, C, Ducroux, V, Civelli, P, Reiner, E, Cognat, A, Aymard, A, Bisdorff, J-P, Saint-Maurice, E, Houdart   +8 more
openaire   +2 more sources

ERS2-ENVISAT cross-validation during the tandem phase

2014
ERS2 and ENVISAT have been flying in tandem over the same orbit with 30min delay for about 1 year. We use the data from the 2 satellites for this period. We have reprocessed the ERS2 data from waveform altimeter product over all surfaces. We developed a number of corrections to be used in conjunction and computed homogeneously for the 2 satellites.
LEGRESY, Benoit, BLAREL, Fabien, Niño, Fernando   +2 more
openaire   +1 more source