Advanced Search
Display options
Filter resources
Text Availability
Article type
Publication date
Species
Language
Sex
Age
Showing 25 to 36 of 508 entries
Sorted by: Best Match Show Resources per page
Phytochemical reinvestigation of Xysmalobium undulatum roots (Uzara).

Planta medica

Ghorbani M, Kaloga M, Frey HH, Mayer G, Eich E.
PMID: 17252392
Planta Med. 1997 Aug;63(4):343-6. doi: 10.1055/s-2006-957697.

Four major cardenolide glycosides of Xysmalobium undulatum (L.) R. Br. roots (Uzara) have been isolated for the first time in pure form. The structures were elucidated by spectral analyses and determined as sophorosides and their 17-epimers, respectively. Thus, the...

Dispersion-cancelled and dispersion-sensitive quantum optical coherence tomography.

Optics express

Nasr M, Saleh B, Sergienko A, Teich M.
PMID: 19474956
Opt Express. 2004 Apr 05;12(7):1353-62. doi: 10.1364/opex.12.001353.

Quantum optical coherence tomography (QOCT) makes use of an entangled twin-photon light source to carry out axial optical sectioning. We have probed the longitudinal structure of a sample comprising multiple surfaces in a dispersion-cancelled manner while simultaneously measuring the...

Intrinsic viscosities of polyelectrolytes: determination and modeling of the effects of extra salt.

Chemphyschem : a European journal of chemical physics and physical chemistry

Eich A, Wolf BA.
PMID: 21919181
Chemphyschem. 2011 Oct 24;12(15):2786-90. doi: 10.1002/cphc.201100439. Epub 2011 Sep 14.

Based on early measurements of J. J. Hermans and co-workers (D. T. F. Pals, J. J. Hermans, Recl. Trav. Chim. Pays-Bas 1952, 71, 513-520; D. T. F. Pals, J. J. Hermans, J. Polym. Sci. 1950, 5, 733-734; D. T....

Photodarkening kinetics as a function of Yb concentration and the role of Al codoping.

Applied optics

Jetschke S, Unger S, Leich M, Kirchhof J.
PMID: 23142886
Appl Opt. 2012 Nov 10;51(32):7758-64. doi: 10.1364/AO.51.007758.

We investigated the photodarkening (PD) kinetics of two fiber series with variation of the Yb content for constant Al concentration or constant ratio of Al/Yb, respectively. The results show the outstanding importance of the absolute value of Al concentration...

Importance of innate mucosal immunity and the promises it holds.

International journal of general medicine

Dwivedy A, Aich P.
PMID: 21556316
Int J Gen Med. 2011 Apr 12;4:299-311. doi: 10.2147/IJGM.S17525.

The body defense mechanism has evolved to protect animals from invading pathogenic microorganisms and cancer. It is able to generate a diverse variety of cells and molecules capable of specifically recognizing and eliminating a limitless variety of foreign invaders....

Facile deposition of YSZ-inverse photonic glass films.

ACS applied materials & interfaces

do Rosário JJ, Dyachenko PN, Kubrin R, Pasquarelli RM, Petrov AY, Eich M, Schneider GA.
PMID: 25036409
ACS Appl Mater Interfaces. 2014 Aug 13;6(15):12335-45. doi: 10.1021/am502110p. Epub 2014 Jul 31.

An alternative all-colloidal and single-step deposition method of yttrium-stabilized zirconia (YSZ)-infiltrated polymeric photonic glass films is presented. Heterocoagulation of oppositely charged polystyrene (PS) microspheres and YSZ nanocrystals in aqueous dispersions created PS/YSZ core-shell spheres. These composite particles were deposited...

Optical spectroscopy of single Si nanocylinders with magnetic and electric resonances.

Scientific reports

Evlyukhin AB, Eriksen RL, Cheng W, Beermann J, Reinhardt C, Petrov A, Prorok S, Eich M, Chichkov BN, Bozhevolnyi SI.
PMID: 24535224
Sci Rep. 2014 Feb 18;4:4126. doi: 10.1038/srep04126.

Resonant electromagnetic properties of nanoparticles fabricated from high-index semiconductor or dielectric materials are very promising for the realization of novel nanoantennas and metamaterials. In this paper we study optical resonances of Si nanocylinders located on a silica substrate. Multipole...

Polarization-assisted transverse and axial optical superresolution.

Optics express

Whiting A, Abouraddy A, Saleh B, Teich M, Fourkas J.
PMID: 19466051
Opt Express. 2003 Jul 28;11(15):1714-23. doi: 10.1364/oe.11.001714.

The superposition of two coaxial Gaussian beams with offset foci and orthogonal linear polarizations can be used to produce a right- or leftcircular polarization component with a focal spot of volume smaller than that of the Gaussian beam. This...

Phylogenetic study of the evolution of PEP-carboxykinase.

Evolutionary bioinformatics online

Aich S, Delbaere LT.
PMID: 19461981
Evol Bioinform Online. 2007 Dec 11;3:333-40.

Phosphoenolpyruvate carboxykinase (PCK) is the key enzyme to initiate the gluconeogenic pathway in vertebrates, yeast, plants and most bacteria. Nucleotide specificity divided all PCKs into two groups. All the eukaryotic mammalian and most archaeal PCKs are GTP-specific. Bacterial and...

Odors Pulsed at Wing Beat Frequencies are Tracked by Primary Olfactory Networks and Enhance Odor Detection.

Frontiers in cellular neuroscience

Tripathy SJ, Peters OJ, Staudacher EM, Kalwar FR, Hatfield MN, Daly KC.
PMID: 20407584
Front Cell Neurosci. 2010 Mar 16;4:1. doi: 10.3389/neuro.03.001.2010. eCollection 2010.

Each down stroke of an insect's wings accelerates axial airflow over the antennae. Modeling studies suggest that this can greatly enhance penetration of air and air-born odorants through the antennal sensilla thereby periodically increasing odorant-receptor interactions. Do these periodic...

Optimization of a bolometer detector for ITER based on Pt absorber on SiN membrane.

The Review of scientific instruments

Meister H, Eich T, Endstrasser N, Giannone L, Kannamüller M, Kling A, Koll J, Trautmann T, Detemple P, Schmitt S.
PMID: 21061487
Rev Sci Instrum. 2010 Oct;81(10):10E132. doi: 10.1063/1.3499637.

Any plasma diagnostic in ITER must be able to operate at temperatures in excess of 200 °C and neutron loads corresponding to 0.1 dpa over its lifetime. To achieve this aim for the bolometer diagnostic, a miniaturized metal resistor...

Genetics: A New Landscape for Medical Geography.

Annals of the Association of American Geographers. Association of American Geographers

Carrel M, Emch M.
PMID: 24558292
Ann Assoc Am Geogr. 2013;103(6):1452-1467. doi: 10.1080/00045608.2013.784102.

The emergence and re-emergence of human pathogens resistant to medical treatment will present a challenge to the international public health community in the coming decades. Geography is uniquely positioned to examine the progressive evolution of pathogens across space and...

Showing 25 to 36 of 508 entries