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Showing 1 to 12 of 30 entries
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Photoluminescence excitation measurements using pressure-tuned laser diodes.

The Review of scientific instruments

Bercha A, Ivonyak Y, Mędryk R, Trzeciakowski WA, Dybała F, Piechal B.
PMID: 26133822
Rev Sci Instrum. 2015 Jun;86(6):063101. doi: 10.1063/1.4921859.

Pressure-tuned laser diodes in external cavity were used as tunable sources for photoluminescence excitation (PLE) spectroscopy. The method was demonstrated in the 720 nm-1070 nm spectral range using a few commercial laser diodes. The samples for PLE measurements were...

Pressure tuning of laser diodes in the near-infrared up to 1850 nm: operational characteristics and reliability studies.

The Review of scientific instruments

Bercha A, Dybala F, Piechal B, Ivonyak Y, Klimczak M, Trzeciakowski WA.
PMID: 24985799
Rev Sci Instrum. 2014 Jun;85(6):063107. doi: 10.1063/1.4881607.

Wavelength tuning of infrared laser diodes in the high-hydrostatic pressure setup is demonstrated and its reliability is discussed in detail. Major reliability issues concern the photochemical reactions on the laser facet and the presence of strong absorption bands above...

Overexpression of MMP-7 Increases Collagen 1A2 in the Aging Kidney.

Physiological reports

Oelusarz A, Nichols LA, Grunz-Borgmann EA, Chen G, Akintola AD, Catania JM, Burghardt RC, Trzeciakowski JP, Parrish AR.
PMID: 24273653
Physiol Rep. 2013 Oct;1(5). doi: 10.1002/phy2.90.

The percentage of the U.S. population over 65 is rapidly increasing, as is the incidence of chronic kidney disease (CKD). The kidney is susceptible to age-dependent alterations in structure, specifically tubulointerstitial fibrosis, that lead to CKD. Matrix metalloproteinases (MMPs)...

Gradient index collimator lens for high pressure applications.

The Review of scientific instruments

Piechal B, Bercha A, Dybala F, Trzeciakowski W.
PMID: 24985797
Rev Sci Instrum. 2014 Jun;85(6):063105. doi: 10.1063/1.4880457.

A modified gradient index (GRIN) lens is optimised for use in a liquid-type high pressure cell. It was found that high pressure changes the optical power of the gradient-index lenses by changing the index profile of the glass. In...

Hypoxia and extracellular matrix proteins influence angiogenesis and lymphangiogenesis in mouse embryoid bodies.

Frontiers in physiology

Foskett AM, Ezekiel UR, Trzeciakowski JP, Zawieja DC, Muthuchamy M.
PMID: 22194726
Front Physiol. 2011 Dec 20;2:103. doi: 10.3389/fphys.2011.00103. eCollection 2011.

Regulatory mechanisms for angiogenesis are relatively well established compared to lymphangiogenesis. Few studies have shown that a combination of vascular endothelial growth factor VEGF-A/C with hypoxia or collagen matrix promotes lymphatic structures along with blood vessel development in mouse...

Shallow donors in magnetic fields in zinc-blende semiconductors. I. Theory.

Physical review. B, Condensed matter

Baj M, Brunel LC, Huant S, Trzeciakowski W.
PMID: 9938010
Phys Rev B Condens Matter. 1986 May 15;33(10):6846-6862. doi: 10.1103/physrevb.33.6846.

No abstract available.

Shallow donors in magnetic fields in zinc-blende semiconductors. II. Magneto-optical study of InSb under hydrostatic pressure.

Physical review. B, Condensed matter

Baj M, Brunel LC, Huant S, Trzeciakowski W.
PMID: 9938011
Phys Rev B Condens Matter. 1986 May 15;33(10):6863-6873. doi: 10.1103/physrevb.33.6863.

No abstract available.

Vascular Smooth Muscle Contractile Function Declines With Age in Skeletal Muscle Feed Arteries.

Frontiers in physiology

Seawright JW, Sreenivasappa H, Gibbs HC, Padgham S, Shin SY, Chaponnier C, Yeh AT, Trzeciakowski JP, Woodman CR, Trache A.
PMID: 30108507
Front Physiol. 2018 Jul 31;9:856. doi: 10.3389/fphys.2018.00856. eCollection 2018.

Aging induces a progressive decline in vasoconstrictor responses in central and peripheral arteries. This study investigated the hypothesis that vascular smooth muscle (VSM) contractile function declines with age in soleus muscle feed arteries (SFA). Contractile function of cannulated SFA...

Effective-mass approximation in semiconductor heterostructures: One-dimensional analysis.

Physical review. B, Condensed matter

Trzeciakowski W.
PMID: 9946194
Phys Rev B Condens Matter. 1988 Dec 15;38(17):12493-12507. doi: 10.1103/physrevb.38.12493.

No abstract available.

Reinventing Biostatistics Education for Basic Scientists.

PLoS biology

Weissgerber TL, Garovic VD, Milin-Lazovic JS, Winham SJ, Obradovic Z, Trzeciakowski JP, Milic NM.
PMID: 27058055
PLoS Biol. 2016 Apr 08;14(4):e1002430. doi: 10.1371/journal.pbio.1002430. eCollection 2016 Apr.

Numerous studies demonstrating that statistical errors are common in basic science publications have led to calls to improve statistical training for basic scientists. In this article, we sought to evaluate statistical requirements for PhD training and to identify opportunities...

Note: Coupling of multiple laser diodes into a multi-mode fiber.

The Review of scientific instruments

Ivonyak Y, Piechal B, Mrozowicz M, Bercha A, Trzeciakowski W.
PMID: 24689634
Rev Sci Instrum. 2014 Mar;85(3):036106. doi: 10.1063/1.4868598.

Diode lasers are coupled to a multi-mode fiber (with 100-400 μm core) using a reflector in the form of a regular pyramid. The optimization of the optical setup allows to couple 60%-90% of light into the fiber. The demonstrator...

Blue Laser (450 nm) in the Treatment of Port Wine Stains and Telangiectasia.

Journal of clinical medicine

Szymańczyk J, Trzeciakowski W, Ivonyak Y, Tuchowski P, Szymańczyk J.
PMID: 33803723
J Clin Med. 2021 Mar 18;10(6). doi: 10.3390/jcm10061258.

This study aimed to test a blue light source for the treatment of port wine stains (PWS) and telangiectasia and to compare this with the application of green and yellow lasers based on data in the literature. A total...

Showing 1 to 12 of 30 entries