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Showing 25 to 36 of 579 entries
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Sub-picosecond time resolved infrared spectroscopy of high-spin state formation in Fe(ii) spin crossover complexes.

Physical chemistry chemical physics : PCCP

Wolf MM, Gross R, Schumann C, Wolny JA, Schünemann V, Døssing A, Paulsen H, McGarvey JJ, Diller R.
PMID: 18633547
Phys Chem Chem Phys. 2008 Aug 07;10(29):4264-73. doi: 10.1039/b802607f. Epub 2008 Jun 09.

The photoinduced low-spin (S = 0) to high-spin (S = 2) transition of the iron(ii) spin-crossover systems [Fe(btpa)](PF(6))(2) and [Fe(b(bdpa))](PF(6))(2) in solution have been studied for the first time by means of ultrafast transient infrared spectroscopy at room temperature....

Comparison of imaging geometries for diffuse optical tomography of tissue.

Optics express

Pogue B, McBride T, Osterberg U, Paulsen K.
PMID: 19396284
Opt Express. 1999 Apr 12;4(8):270-86. doi: 10.1364/oe.4.000270.

Images produced in six different geometries with diffuse optical tomography simulations of tissue have been compared using a finite element-based algorithm with iterative refinement provided by the Newton-Raphson approach. The source-detector arrangements studied include (i) fan-beam tomography, (ii) full...

Single chain magnet behaviour in an enantiopure chiral cobalt(II)-copper(II) one-dimensional compound.

Chemical communications (Cambridge, England)

Pardo E, Train C, Lescouëzec R, Journaux Y, Pasán J, Ruiz-Pérez C, Delgado FS, Ruiz-Garcia R, Lloret F, Paulsen C.
PMID: 20234946
Chem Commun (Camb). 2010 Apr 07;46(13):2322-4. doi: 10.1039/b920231e. Epub 2010 Jan 18.

The self-assembly of an enantiomerically pure, chiral dianionic oxamatocopper(II) complex with cobalt(II) ions leads to neutral oxamato-bridged heterobimetallic chains that combine chirality and slow magnetic relaxation, providing thus the first example of "chiral single chain magnets" (CSCMs).

Zooming in on microscopic flow by remotely detected MRI.

Science (New York, N.Y.)

Bajaj VS, Paulsen J, Harel E, Pines A.
PMID: 20929729
Science. 2010 Nov 19;330(6007):1078-81. doi: 10.1126/science.1192313. Epub 2010 Oct 07.

Magnetic resonance imaging (MRI) can elucidate the interior structure of an optically opaque object in unparalleled detail but is ultimately limited by the need to enclose the object within a detection coil; acquiring the image with increasingly smaller pixels...

Morphology and physiology of an alpha-amylase producing strain of Aspergillus oryzae during batch cultivations.

Biotechnology and bioengineering

Carlsen M, Spohr AB, Nielsen J, Villadsen J.
PMID: 18623577
Biotechnol Bioeng. 1996 Feb 05;49(3):266-76. doi: 10.1002/(SICI)1097-0290(19960205)49:3<266::AID-BIT4>3.0.CO;2-I.

The microscopic morphology, that is, total hyphal length and total number of tips, has been characterized during batch cultivations of Aspergillus oryzae. The specific growth rate estimated by measuring the total hyphal length (mu(h)) corresponds well with the specific...

Fe(II) complex with the octadentate btpa ligand: a DFT study on a spin-crossover system that reveals two distinct high-spin states.

Physical chemistry chemical physics : PCCP

Wolny JA, Paulsen H, McGarvey JJ, Diller R, Schünemann V, Toftlund H.
PMID: 19950494
Phys Chem Chem Phys. 2009 Sep 21;11(35):7562-75. doi: 10.1039/b905328j.

Density functional theory calculations (DFT) were performed for the spin-crossover system [Fe(btpa)]2+ (btpa = N,N,N',N'-tetrakis(2-pyridylmethyl)-6,6'-bis(aminomethyl)-2,2'-bipyridine), and for the predominantly low-spin [Fe(b(bdpa))]2+ complex (in the solid state) (b(bdpa) = N,N'-bis(benzyl)-N,N'-bis(2-pyridylmethyl)-6,6'-bis(aminomethyl)-2,2'-bipyridine). The calculations confirmed that the former complex exhibits two high-spin...

Development of infectious cDNA clones of Salmonid alphavirus subtype 3.

BMC research notes

Karlsen M, Villoing S, Ottem KF, Rimstad E, Nylund A.
PMID: 20858233
BMC Res Notes. 2010 Sep 21;3:241. doi: 10.1186/1756-0500-3-241.

BACKGROUND: Salmonid alphavirus (SAV) is a widespread pathogen in European aquaculture of salmonid fish. Distinct viral subtypes have been suggested based on sequence comparisons and some of these have different geographical distributions. In Norway, only SAV subtype 3 have...

Carcass and meat quality traits of wild boar (Sus scrofa s. L.) with 2n=36 karyotype compared to those of phenotypically similar crossbreeds (2n=37 and 2n=38) raised under the same farming conditions 2 Fatty acid profile and cholesterol.

Meat science

Skewes O, Morales R, Mendoza N, Smulders FJ, Paulsen P.
PMID: 20416761
Meat Sci. 2009 Oct;83(2):195-200. doi: 10.1016/j.meatsci.2009.04.017. Epub 2009 May 06.

The aim of this study was to compare European wild boar (Sus scrofa) with chromosomal number 2n=36 to phenotypically similar animals with 2n=37 and 2n=38 chromosomes (crossbreeds) with respect to fatty acid (FA) profile and cholesterol content. According to...

Sampling of time- and frequency-domain signals in monte carlo simulations of photon migration.

Applied optics

Testorf M, Osterberg U, Pogue B, Paulsen K.
PMID: 18305609
Appl Opt. 1999 Jan 01;38(1):236-45. doi: 10.1364/ao.38.000236.

We compare two fundamentally different ways to evaluate the time dependence in Monte Carlo simulations of photon migration: estimating the pulse response in time versus evaluating the transfer function at discrete points in the frequency domain. We show that...

Shikonin directly targets mitochondria and causes mitochondrial dysfunction in cancer cells.

Evidence-based complementary and alternative medicine : eCAM

Wiench B, Eichhorn T, Paulsen M, Efferth T.
PMID: 23118796
Evid Based Complement Alternat Med. 2012;2012:726025. doi: 10.1155/2012/726025. Epub 2012 Oct 15.

Chemotherapy is a mainstay of cancer treatment. Due to increased drug resistance and the severe side effects of currently used therapeutics, new candidate compounds are required for improvement of therapy success. Shikonin, a natural naphthoquinone, was used in traditional...

Restriction fragment patterns of chloroplast and mitochondrial DNA of Dasypyvum villosum (L.) candargy and wheats.

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik

Shu G, Muthukrishnan S, Liang GH, Paulsen GM.
PMID: 24190190
Theor Appl Genet. 1993 Oct;87(1):44-8. doi: 10.1007/BF00223742.

To elucidate the phylogenetic relationships and cytoplasmic types, restriction endonuclease fragment patterns of chloroplast (cp) and mitochondrial (mt) DNAs isolated from two different accessions of Dasypyrum villosum (L.) candargy were compared with those of tetraploid wheat (Triticum durum Desf.,...

Highly anisotropic rhenium(IV) complexes: new examples of mononuclear single-molecule magnets.

Journal of the American Chemical Society

Martínez-Lillo J, Mastropietro TF, Lhotel E, Paulsen C, Cano J, De Munno G, Faus J, Lloret F, Julve M, Nellutla S, Krzystek J.
PMID: 23957361
J Am Chem Soc. 2013 Sep 18;135(37):13737-48. doi: 10.1021/ja403154z. Epub 2013 Sep 09.

The rhenium(IV) complex (NBu4)2[ReBr4(ox)] (1) (ox = oxalate and NBu4(+) = tetra-n-butylammonium cation) has been prepared and its crystal structure determined by X-ray diffraction. The structure is made up of discrete [ReBr4(ox)](2-) anions and bulky NBu4(+) cations. Each [ReBr4(ox)](2-)...

Showing 25 to 36 of 579 entries