Results 91 to 100 of about 839,062 (317)

What is moving in silica at 1 K? A computer study of the low-temperature anomalies

, 2005
Though the existence of two-level systems (TLS) is widely accepted to explain low temperature anomalies in many physical observables, knowledge about their properties is very rare.
A. Heuer, J. Reinisch, P. W. Anderson, V. G. Karpov   +3 more
core   +1 more source

Biocatalytic preparation and absolute configuration of enantiomerically pure fungistatic anti-2-benzylindane derivatives. Study of the detoxification mechanism by Botrytis cinerea [PDF]

, 2010
Enantiomerically pure 2-benzylindane derivatives were prepared using biocatalytic methods and their absolute configuration determined. (1R,2S)-2-Benzylindan-1-ol ((1R,2S)-2) and (S)-2-benzylindan-1-one ((S)-3) were produced by fermenting baker’s yeast.
Aleu, Bustillo, Bálint, Cristina Pinedo-Rivilla, Cui, De Gonzalo, Florey, Fronza, Isidro G. Collado, Josefina Aleu, Kokubun, Lamarche, Lorentzen, Manuel Grande Benito, Martínez, Nakamura, Osbourn, Petrignet, Pezet, Prost, Shieh, Smith, Snatzke, Stamb   +23 more
core   +2 more sources

Effect of Foot Orthoses on Midfoot Pain and the Volume of Bone Marrow Lesions in the Midfoot: A Randomized Mechanism of Action Study

Arthritis Care &Research, EarlyView.
Objective Foot orthoses are thought to improve pain by potentially modifying internal mechanical forces. To test this, we explored whether foot orthoses can modify patterns of bone marrow lesions (BMLs) in people with midfoot pain. Methods Forty‐two people were recruited with midfoot pain, and magnetic resonance imaging–confirmed midfoot BMLs ...
Jill Halstead, Anne‐Maree Keenan, Philip G. Conaghan, Dennis McGonagle, Anthony C. Redmond   +4 more
wiley   +1 more source

Absolute radiometric calibration of the EUNIS-06 170-205 A channel and calibration update for CDS/NIS

, 2009
The Extreme-Ultraviolet Normal-Incidence Spectrograph sounding-rocket payload was flown on 2006 April 12 (EUNIS-06), carrying two independent imaging spectrographs covering wave bands of 300-370 A in first order and 170-205 A in second order ...
Andretta, Brosius, Brosius, Brosius, Brosius, Brosius, Brosius, Brosius, Brosius, Del Zanna, Douglas M. Rabin, Jeffrey W. Brosius, Jess, Joseph M. Davila, Lang, Neupert, Rabin, Roger J. Thomas, Thomas, Thomas, Thompson, Tongjiang Wang   +21 more
core   +1 more source

Assessment of Pain Types in Recently Diagnosed Patients With Inflammatory Arthritis

Arthritis Care &Research, EarlyView.
Objective Up to 40% of patients with inflammatory arthritis (IA) experience persistent pain, traditionally thought to be associated with a shift from peripherally to centrally mediated pain during the disease course in some patients. We assessed sensory profiles of recently diagnosed individuals with IA, hypothesizing that pain reported at this early ...
Zoe Rutter‐Locher, Sam Norton, Joseph L. Taylor, Bina Menon, Tom Esterine, Ruth Williams, Leonie S. Taams, Kirsty Bannister, Bruce W. Kirkham   +8 more
wiley   +1 more source

Three New Highly Oxygenated Germacranolides from Carpesium Divaricatum and Their Cytotoxic Activity

Molecules, 2018
Three new highly oxygenated (2–4), and two known (1 and 5) germacranolides, were isolated from the whole plant of Carpesium divaricatum.
Tao Zhang, Jin-Guang Si, Qiu-Bo Zhang, Jia-Huan Chen, Gang Ding, Hong-Wu Zhang, Hong-Mei Jia, Zhong-Mei Zou   +7 more
doaj   +1 more source

Accuracy of spike-train Fourier reconstruction for colliding nodes

, 2015
We consider Fourier reconstruction problem for signals F, which are linear combinations of shifted delta-functions. We assume the Fourier transform of F to be known on the frequency interval [-N,N], with an absolute error not exceeding e > 0.
Akinshin, Andrey, Batenkov, Dmitry, Yomdin, Yosef   +2 more
core   +1 more source

Hopfield Neural Networks for Online Constrained Parameter Estimation With Time‐Varying Dynamics and Disturbances

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley   +1 more source

Crystal structure of akuammicine, an indole alkaloid from Catharanthus roseus

Acta Crystallographica Section E: Crystallographic Communications, 2017
The title compound, C20H22N2O2, an alkaloid isolated from the Madagascar periwinkle, crystallizes in P1 with two independent but closely similar molecules in the unit cell. The molecules are linked into pairs by two N—H...O=C hydrogen bonds. The absolute
Mahdi Yahyazadeh, Gerold Jerz, Dirk Selmar, Peter Winterhalter, Peter G. Jones   +4 more
doaj   +1 more source

Current Tracking Adaptive Control of Brushless DC Motors

International Journal of Adaptive Control and Signal Processing, EarlyView.
In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García, Axel Coronado‐Andrade, Gerardo Espinosa‐Pérez, Luis Alvarez‐Icaza   +3 more
wiley   +1 more source