Spectrum Analysis
Research News and Information

Saturday, November 21, 2009

Salt dependence of an alpha-helical peptide folding energy landscapes.

15 Nov 2009 We used CD, UV resonance Raman spectroscopy, and molecular dynamics simulation to examine the impact of salts on the conformational equilibria and the Ramachandran Psi angle (un)folding Gibbs free energy landscape coordinate of a mainly polyalanine ... Read more...

Redox potential of the primary plastoquinone electron acceptor Q(A) in photosystem II from Thermosynechococcus elongatus determined by spectroelectrochemistry.

15 Nov 2009 The redox potential of the primary plastoquinone electron acceptor Q(A), E(m)(Q(A)/Q(A)(-)), in an oxygen-evolving photosystem (PS) II complex from a thermophilic cyanobacterium Thermosynechococcus elongatus was determined to be -140 +/- 2 mV vs. ... Read more...

The second Cu(II)-binding site in a proton-rich environment interferes with the aggregation of amyloid-beta(1-40) into amyloid fibrils.

15 Nov 2009 The overall morphology and Cu(II) ion coordination for the aggregated amyloid-beta(1-40) [Abeta(1-40)] in N-ethylmorpholine (NEM) buffer are affected by Cu(II) ion concentration. This effect is investigated by transmission electron microscopy (TEM), ... Read more...

Latest indexed articles for 'Spectrum Analysis'

These are the very latest articles for this heading:

• Salt dependence of an alpha-helical peptide folding energy landscapes. 15 Nov 2009
• Redox potential of the primary plastoquinone electron acceptor Q(A) in photosystem II from Thermosynechococcus elongatus determined by spectroelectrochemistry. 15 Nov 2009
• The second Cu(II)-binding site in a proton-rich environment interferes with the aggregation of amyloid-beta(1-40) into amyloid fibrils. 15 Nov 2009
• Frequency-band coupling in surface EEG reflects spiking activity in monkey visual cortex. 27 Oct 2009
• Force and function: probing proteins with AFM-based force spectroscopy. 10 Oct 2009
• Rapid noninvasive optical imaging of tissue composition in breast tumor margins. 29 Sep 2009
• Biospecific protein immobilization for rapid analysis of weak protein interactions using self-interaction nanoparticle spectroscopy. 29 Sep 2009
• Non-linear dielectric spectroscopy of microbiological suspensions. 20 Sep 2009
• Frequency spectrum of transepithelial potential difference reveals transport-related oscillations. 14 Sep 2009
• Basal forebrain lactate release and promotion of cortical arousal during prolonged waking is attenuated in aging. 14 Sep 2009
• Use of gel-assembly to fabricate multi-component molecular gradient layers and the investigation of structure and electron transport therein. 12 Sep 2009
• Selective suppression of hippocampal ripples impairs spatial memory. 11 Sep 2009
• Modeling, structural, and spectroscopic studies of lanthanide-organic frameworks. 8 Sep 2009
• Coupling CP-MD simulations and X-ray absorption spectroscopy: exploring the structure of oxaliplatin in aqueous solution. 8 Sep 2009
• Orientation determination of protein helical secondary structures using linear and nonlinear vibrational spectroscopy. 8 Sep 2009
• The detection of cervical intraepithelial neoplasia by electrical impedance spectroscopy: the effects of acetic acid and tissue homogeneity. 7 Sep 2009
• Energy localization in molecules, bifurcation phenomena, and their spectroscopic signatures: the global view. 30 Aug 2009
• The preparation of Ag nanoparticle-modified single-walled carbon nanotubes and their antibacterial activity. 30 Aug 2009
• Duloxetine serum concentrations and clinical effects. Data from a therapeutic drug monitoring (TDM) survey. 30 Aug 2009
• Rapid freeze-drying cycle optimization using computer programs developed based on heat and mass transfer models and facilitated by tunable diode laser absorption spectroscopy (TDLAS). 30 Aug 2009

See a longer list of these articles.

Technical information about 'Spectrum Analysis'

Definition: The measurement of the amplitude of the components of a complex waveform throughout the frequency range of the waveform. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)

Descriptor UI: D013057

Alternative terms: Spectrum Analysis; Spectroscopy; Spectroscopies; Analysis, Spectrum; Analyses, Spectrum; Spectrum Analyses;

Allowable Qualifiers: classification; economics; history; instrumentation; methods; standards; trends; utilization; veterinary; statistics & numerical data; ethics;

Tree Number: E05.196.867;

Technical Notes: an anal chem technique; GEN or unspecified; prefer specifics; NIM; x-ray absorption spectroscopy goes here + X-RAYS (NIM)