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Showing 1 to 12 of 229 entries
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Rhenium Complexes with Red-Light-Induced Anticancer Activity.

European journal of inorganic chemistry

Wähler K, Ludewig A, Szabo P, Harms K, Meggers E.
PMID: 25050081
Eur J Inorg Chem. 2014 Feb 01;2014(5):807-811. doi: 10.1002/ejic.201301474.

Rhenium(I) pyridocarbazole complexes with photoinduced antiproliferative activity are reported. The substitutionally inert complexes induce cell death by singlet oxygen generation upon irradiation with red light (

Fabrication of ultra-thin polyrotaxane-based films via solid-state continuous assembly of polymers.

Chemical communications (Cambridge, England)

Tan S, Nam E, Cui J, Xu C, Fu Q, Ren JM, Wong EH, Ladewig K, Caruso F, Blencowe A, Qiao GG.
PMID: 25487812
Chem Commun (Camb). 2015 Feb 07;51(11):2025-8. doi: 10.1039/c4cc08759c.

Surface-confined ultra-thin polyrotaxane (PRX)-based films with tunable composition, surface topology and swelling characteristics were prepared by solid-state continuous assembly of polymers (ssCAP). The PRX-based films supported cell attachment, and their degradation in biological media could be tuned. This study...

Natural Genetic Variation of Seed Micronutrients of Arabidopsis thaliana Grown in Zinc-Deficient and Zinc-Amended Soil.

Frontiers in plant science

Chen X, Yuan L, Ludewig U.
PMID: 27507976
Front Plant Sci. 2016 Jul 26;7:1070. doi: 10.3389/fpls.2016.01070. eCollection 2016.

The quality of edible seeds for human and animal nutrition is crucially dependent on high zinc (Zn) and iron (Fe) seed concentrations. The micronutrient bioavailability is strongly reduced by seed phytate that forms complexes with seed cations. Superior genotypes...

Bernal random loose packing through freeze-thaw cycling.

Physical review. E, Statistical, nonlinear, and soft matter physics

Ludewig F, Vandewalle N, Dorbolo S, Pakpour M, Lumay G.
PMID: 26274104
Phys Rev E Stat Nonlin Soft Matter Phys. 2015 Jul;92(1):010202. doi: 10.1103/PhysRevE.92.010202. Epub 2015 Jul 23.

We study the effect of freeze-thaw cycling on the packing fraction of equal spheres immersed in water. The water located between the grains experiences a dilatation during freezing and a contraction during melting. After several cycles, the packing fraction...

Cluster growth in driven granular gases.

Physical review. E

Noirhomme M, Ludewig F, Vandewalle N, Opsomer E.
PMID: 28297928
Phys Rev E. 2017 Feb;95(2):022905. doi: 10.1103/PhysRevE.95.022905. Epub 2017 Feb 23.

We investigate numerically and theoretically the internal structures of a driven granular gas in cuboidal cell geometries. Clustering is reported and particles are classified as gaseous or clustered via a local packing fraction criterion based on a Voronoi tessellation....

Insect Herbivory-Elicited GABA Accumulation in Plants is a Wound-Induced, Direct, Systemic, and Jasmonate-Independent Defense Response.

Frontiers in plant science

Scholz SS, Reichelt M, Mekonnen DW, Ludewig F, Mithöfer A.
PMID: 26734035
Front Plant Sci. 2015 Dec 22;6:1128. doi: 10.3389/fpls.2015.01128. eCollection 2015.

The non-proteinogenic amino acid γ-aminobutyric acid (GABA) is present in all organisms analyzed so far. In invertebrates GABA acts as a neurotransmitter; in plants different functions are under discussion. Among others, its involvement in abiotic stress reactions and as...

The Life Span Model of Suicide and Its Neurobiological Foundation.

Frontiers in neuroscience

Ludwig B, Roy B, Wang Q, Birur B, Dwivedi Y.
PMID: 28261051
Front Neurosci. 2017 Feb 14;11:74. doi: 10.3389/fnins.2017.00074. eCollection 2017.

The very incomprehensibility of the suicidal act has been occupying the minds of researchers and health professionals for a long time. Several theories of suicide have been proposed since the beginning of the past century, and a myriad of...

The Effects of Sulfonated Poly(ether ether ketone) Ion Exchange Preparation Conditions on Membrane Properties.

Membranes

Yee RS, Zhang K, Ladewig BP.
PMID: 24956945
Membranes (Basel). 2013 Aug 13;3(3):182-95. doi: 10.3390/membranes3030182.

A low cost cation exchange membrane to be used in a specific bioelectrochemical system has been developed using poly(ether ether ketone) (PEEK). This material is presented as an alternative to current commercial ion exchange membranes that have been primarily...

Reliable coupling of orthodontic elements to mini-implants: An in-vitro study.

Journal of orthodontic science

Ludwig B, Zipprich H, Gebel B, Piller B, Antoszewska J.
PMID: 24987620
J Orthod Sci. 2012 Jan;1(1):16-22. doi: 10.4103/2278-0203.94774.

OBJECTIVES: To investigate the reliability of mechanical and adhesive methods of fixing rectangular wires in the cross-slot of a mini-implant.MATERIALS AND METHODS: A twin-hooked wire element was placed and fixed in the slot of a mini-implant via a NiTi...

A comparison of skinfolds and leg-to-leg bioelectrical impedance for the assessment of body composition in children.

Dynamic medicine : DM

Goss F, Robertson R, Williams A, Sward K, Abt K, Ladewig M, Timmer J, Dixon C.
PMID: 14498990
Dyn Med. 2003 Aug 26;2(1):5. doi: 10.1186/1476-5918-2-5.

BACKGROUND: This field-based investigation examined the congruence between skinfolds and bioelectrical impedance in assessing body composition in children. METHODS: Subjects were 162 female and 160 male children 10-15 years of age. Skinfold measures obtained at the triceps and medial...

Effect of friction in a toy model of granular compaction.

Physical review. E, Statistical, nonlinear, and soft matter physics

Ludewig F, Dorbolo S, Vandewalle N.
PMID: 15600600
Phys Rev E Stat Nonlin Soft Matter Phys. 2004 Nov;70(5):051304. doi: 10.1103/PhysRevE.70.051304. Epub 2004 Nov 10.

A toy model of granular compaction which includes some resistance due to granular arches is proposed. In this model, the solid/solid friction of contacting grains is a key parameter and a slipping threshold omega(c) is defined. Realistic compaction behaviors...

Oxidation of alkylsilane-based monolayers on gold.

Langmuir : the ACS journal of surfaces and colloids

Owens TM, Ludwig BJ, Schneider KS, Fosnacht DR, Orr BG, Holl MM.
PMID: 15491197
Langmuir. 2004 Oct 26;20(22):9636-45. doi: 10.1021/la0496385.

The oxidation of alkylsilane monolayers on Au has been studied by X-ray photoelectron spectroscopy, reflection-absorption infrared spectroscopy, contact-angle measurements, and scanning tunneling microscopy. Exposure of the monolayers at 298 K to pure O(2) or H(2)O (>5 x 10(-5) Torr...

Showing 1 to 12 of 229 entries