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Showing 1 to 12 of 189 entries
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Ligand dependent topology and spontaneous resolution in high-spin cyano-bridged Ni3W2 clusters.

Dalton transactions (Cambridge, England : 2003)

Nowicka B, Reczyński M, Rams M, Wasiutyński T, Nitek W, Sieklucka B.
PMID: 27431481
Dalton Trans. 2016 Aug 02;45(31):12423-31. doi: 10.1039/c6dt02119k.

Two high-spin pentanuclear NiW clusters with diimine blocking ligands have been obtained: {[Ni(4,4'-MeObpy)2]3[W(CN)8]2}·12H2O (1) and {[Ni(phen)2(H2O)][Ni(phen)2]2[W(CN)8]2}·7H2O (2) (4,4'-MeObpy = 4,4'-dimethoxy-2,2'-bipyridine, phen = 1,10-phenanthroline). Despite the similarity of the building blocks and synthetic conditions the compounds show different topologies of...

Retroperitoneal Ganglioneuroma Mimicking a Kidney Tumor. Case Report.

Polish journal of radiology

Dąbrowska-Thing A, Rogowski W, Pacho R, Nawrocka-Laskus E, Nitek Ż.
PMID: 28607627
Pol J Radiol. 2017 May 25;82:283-286. doi: 10.12659/PJR.899633. eCollection 2017.

BACKGROUND: Ganglioneuroma (GN) is a rare benign tumor arising from the neural crest cells. The reported incidence of GN is one per million population. As a primary retroperitoneal tumor, it constitutes only a small percentage of 0.72 to 1.6%....

Excitons in Core-Shell Nanowires with Polygonal Cross Sections.

Nano letters

Sitek A, Urbaneja Torres M, Torfason K, Gudmundsson V, Bertoni A, Manolescu A.
PMID: 29578727
Nano Lett. 2018 Apr 11;18(4):2581-2589. doi: 10.1021/acs.nanolett.8b00309. Epub 2018 Mar 29.

The distinctive prismatic geometry of semiconductor core-shell nanowires leads to complex localization patterns of carriers. Here, we describe the formation of optically active in-gap excitonic states induced by the interplay between localization of carriers in the corners and their...

Optical Activity and Dehydration-Driven Switching of Magnetic Properties in Enantiopure Cyanido-Bridged Co(II)3W(V)2 Trigonal Bipyramids.

Inorganic chemistry

Chorazy S, Podgajny R, Nogaś W, Buda S, Nitek W, Mlynarski J, Rams M, Kozieł M, Juszyńska Gałązka E, Vieru V, Chibotaru LF, Sieklucka B.
PMID: 26020445
Inorg Chem. 2015 Jun 15;54(12):5784-94. doi: 10.1021/acs.inorgchem.5b00470. Epub 2015 May 28.

The unique enantiopure {[Λ-Co(II)((R)-mpm)2]3[W(V)(CN)8]2}·9H2O [(R)-1] and {[Δ-Co(II)((S)-mpm)2]3[W(V)(CN)8]2}·9H2O [(S)-1], where mpm = α-methylpyridinemethanol, magnetic spongelike materials, crystallizing in the chiral P21 space group, are constructed of cyanido-bridged {Co3W2} trigonal bipyramids with three cis-[Co(II)(mpm)2(μ-NC)2] moieties in equatorial sites and two [W(V)(CN)8](3-)...

Nanosecond control and optical pulse shaping by stimulated emission depletion in a liquid crystal.

Optics express

Vitek M, Muševič I.
PMID: 26191703
Opt Express. 2015 Jun 29;23(13):16921-32. doi: 10.1364/OE.23.016921.

We study anisotropic Stimulated Emission Depletion (STED) from dye molecules, which are collectively ordered in a host liquid crystal. Due to the ordering of fluorescent emitters, the STED efficiency depends on the polarization of the depletion beam and time-delay...

Assay of phagocyte activation by means of malondialdehyde and luminol-enhanced chemiluminescence during uneventful wound healing following trauma surgery.

Redox report : communications in free radical research

Kukovetz EM, Hofer HP, Egger G, Khoschsorur GA, Bratschitsch G, Petek W, Quehenberger F, Schaur RJ.
PMID: 27405711
Redox Rep. 1995 Aug;1(4):247-54. doi: 10.1080/13510002.1995.11746994.

The purpose of the study was the assessment of the acute inflammatory response in patients (N = 12) with comparable trauma severity and uneventful wound healing courses in the postsurgical period as a contribution to the search for objectifiable...

Analytic environment-dependent tight-binding bond integrals: application to MoSi2.

Physical review letters

Nguyen-Manh D, Pettifor DG, Vitek V.
PMID: 11056643
Phys Rev Lett. 2000 Nov 06;85(19):4136-9. doi: 10.1103/PhysRevLett.85.4136.

We present the first derivation of explicit analytic expressions for the environmental dependence of the sigma, pi, and delta bond integrals within the orthogonal two-center tight-binding approximation by using the recently developed bond-order potential theory to invert the nonorthogonality...

Utilization of ultrasound to enhance high-speed water jet effects.

Ultrasonics sonochemistry

Foldyna J, Sitek L, Svehla B, Svehla S.
PMID: 15081969
Ultrason Sonochem. 2004 May;11(3):131-7. doi: 10.1016/j.ultsonch.2004.01.008.

Continuous high-speed water jets are presently used in many industrial applications such as cutting of various materials, cleaning and removal of surface layers. However, there is still a need for further research to enhance the performance of pure water...

Rehabilitation following revision hip arthroplasty using morselized bone grafts.

Ortopedia, traumatologia, rehabilitacja

Siwek W, Kwiatkowski K.
PMID: 17986967
Ortop Traumatol Rehabil. 2001 Jan-Mar;3(1):71-4.

For over 25 years, arthroplasty has been in general use as a means of treating degenerative changes in the coxofemoral joint. Loosening of the hip prosthesis is often observed, accompanied by bone defects in the area enveloping the prosthesis....

Uptake of Phenylalanine into Isolated Barley Vacuoles Is Driven by Both Tonoplast Adenosine Triphosphatase and Pyrophosphatase : Evidence for a Hydrophobic l-Amino Acid Carrier System.

Plant physiology

Homeyer U, Litek K, Huchzermeyer B, Schultz G.
PMID: 16666714
Plant Physiol. 1989 Apr;89(4):1388-93. doi: 10.1104/pp.89.4.1388.

The uptake of phenylalanine was studied with vacuole isolated from barley mesophyll protoplasts. The phenylalanine transport exhibited saturation kinetics with apparent K(m)-values of 1.2 to 1.4 millimolar for ATP- or PPi-driven uptake; V(max app) was 120 to 140 nanomoles...

Letter to the editor.

Interventional neuroradiology : journal of peritherapeutic neuroradiology, surgical procedures and related neurosciences

Vitek J.
PMID: 20678377
Interv Neuroradiol. 1997 Mar 30;3(1):93. doi: 10.1177/159101999700300111. Epub 2001 May 15.

No abstract available.

Iron(II)-octacyanoniobate(IV) ferromagnet with T(C) 43 K.

Dalton transactions (Cambridge, England : 2003)

Pinkowicz D, Podgajny R, Pełka R, Nitek W, Bałanda M, Makarewicz M, Czapla M, Zukrowski J, Kapusta C, Zajac D, Sieklucka B.
PMID: 19759952
Dalton Trans. 2009 Oct 07;(37):7771-7. doi: 10.1039/b908486j. Epub 2009 Aug 10.

We have synthesized the octacyanoniobate-based cyano-bridged 3D ferromagnet {[Fe(II)(H(2)O)(2)](2)[Nb(IV)(CN)(8)].4H(2)O}(n) and characterized structurally, spectroscopically (XANES/EXAFS, IR, UV-Vis, Resonance Raman, (57)Fe Mössbauer spectroscopy) and magnetically. crystallizes in the tetragonal system, space group I4/m, a = 11.989(5) A, c = 13.237(5) A,...

Showing 1 to 12 of 189 entries