نتایج جستجو برای: kbr

تعداد نتایج: 750  

2010
Kris De Brabanter Peter Karsmakers Jos De Brabanter Kristiaan Pelckmans Bart De Moor

It is well-known that Kernel Based Regression (KBR) with a least squares loss has some undesirable properties from robustness point of view. KBR with more robust loss functions, e.g. Huber or logistic losses, often give rise to more complicated computations and optimization problems. In classical statistics, robustness is improved by reweighting the original estimate. We study reweighting the K...

Journal: :Physical review letters 2005
S A Burke J M Mativetsky R Hoffmann P Grütter

Noncontact atomic force microscopy has been applied to the prototypical molecule-insulator system C60 on KBr to study nucleation and submonolayer growth. Overview images reveal an island growth mode with unusual branching structures. Simultaneous molecular and atomic resolution on the C60 and KBr surfaces, respectively, was obtained revealing a coincident 8x3 superstructure. Also, a 21+/-3 pm a...

1999
A. K. Speck A. M. Hofmeister M. J. Barlow

Pre-solar grains of silicon carbide found in meteorites and interpreted as having had an origin around carbon stars from their isotopic composition, have all been found to be of the β-SiC polytype. Yet to date fits to the 11.3-µm SiC emission band of carbon stars had been obtained only for α-SiC grains. We present thin film infrared (IR) absorption spectra measured in a diamond anvil cell for b...

2007
A. Caló S. Aksela

The valence photoelectron spectrum has been measured for molecular KBr. Experimental energies of the main and satellite structures have been ompared with the results of ab initio calculations based on molecular orbital theory including configuration and multiconfiguration interaction pproaches. Comparison between the experimental KBr spectrum and previously reported Kr valence photoelectron spe...

2006
Michiel Debruyne Andreas Christmann Mia Hubert

Recently it was shown that Kernel Based Regression (KBR) with a least squares loss function may have some undesirable properties from a robustness point of view: even very small amounts of outliers can dramatically affect the estimates. KBR with other loss functions is much more robust, but often gives rise to complicated computations (e.g. for Huber or logistic losses). In classical statistics...

2004
L Nony R Bennewitz O Pfeiffer E Gnecco A Baratoff

The adsorption of two kinds of porphyrin (Cu-TBPP) and perylene (PTCDA) derived organic molecules deposited on KBr and Al2O3 surfaces has been studied by non-contact force microscopy in ultra-high vacuum, our goal being the assembly of ordered molecular arrangements on insulating surfaces at room temperature. On a Cu(100) surface, well ordered islands of Cu-TBPP molecules were successfully imag...

Journal: :Applied spectroscopy 2010
S H Gordon A Mohamed R E Harry-O'kuru S H Imam

Mid-infrared (mid-IR) analysis of solid biomaterials by the familiar KBr disc technique is all too often frustrated by water interference in the very important protein (amide) and carbohydrate (hydroxyl) regions of their spectra. A method was therefore devised that overcomes the difficulty and corrects IR spectra of solid biomaterials in KBr discs by mathematically eliminating the interference ...

Journal: :Cardiovascular research 2004
Yoshihiko Ichikawa Tetsuji Miura Atsushi Nakano Takayuki Miki Yuichi Nakamura Kazufumi Tsuchihashi Kazuaki Shimamoto

OBJECTIVE The aim of this study was to determine the role of an a disintegrin and metalloprotease (ADAM) in tyrosine kinase-mediated mechanisms of ischemic preconditioning (PC). METHODS AND RESULTS In isolated rabbit hearts, PC was performed with two cycles of 5 min ischemia/5 min reperfusion and infarction was induced by 30 min global ischemia/2 h reperfusion. Translocation of protein kinase...

Journal: :Physical chemistry chemical physics : PCCP 2016
Qian Jia Zhi-Xin Hu Wei Ji Sarah A Burke Hong-Jun Gao Peter Grütter Hong Guo

The adsorption of functional molecules on insulator surfaces is of great interest to molecular and organic electronics. Here, we present a systematic investigation of the geometric and electronic properties of perylene-3,4,9,10-tetracarboxylic-3,4,9,10-dianhydride (PTCDA) and C60 on KBr(001) using density functional theory and non-contact atomic force microscopy to reveal the interplay of inter...

Journal: :Inorganics (Basel) 2023

In this paper, we have reported a low-concentration active electrolyte of KBrO3 for the supercapacitor’s application. The electrochemical processes were carried out in two concentrations with 0.2 and 0.4 M. Additionally, novel strategy doping graphene during its fabrication process potassium bromide (KBr) solution. chemical KBr improved properties used as supercapacitors. HRTEM images confirmed...

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