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Showing 1 to 12 of 105 entries
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Adhesion of the iron-chromium oxide interface from first-principles theory.

Journal of physics. Condensed matter : an Institute of Physics journal

Punkkinen MP, Kokko K, Levämäki H, Ropo M, Lu S, Delczeg L, Zhang HL, Delczeg-Czirjak EK, Johansson B, Vitos L.
PMID: 24184730
J Phys Condens Matter. 2013 Dec 11;25(49):495501. doi: 10.1088/0953-8984/25/49/495501. Epub 2013 Nov 01.

We determine the interface energy and the work of separation of the Fe/Cr2O3 interface using first-principles density functional theory. Starting from different structures, we put forward a realistic interface model that is suitable to study the complex metal-oxide interaction....

Higher resource level promotes virulence in an environmentally transmitted bacterial fish pathogen.

Evolutionary applications

Kinnula H, Mappes J, Valkonen JK, Pulkkinen K, Sundberg LR.
PMID: 28515779
Evol Appl. 2017 Mar 30;10(5):462-470. doi: 10.1111/eva.12466. eCollection 2017 Jun.

Diseases have become a primary constraint to sustainable aquaculture, but remarkably little attention has been paid to a broad class of pathogens: the opportunists. Opportunists often persist in the environment outside the host, and their pathogenic features are influenced...

Contrast-Enhanced Micro-Computed Tomography in Evaluation of Spontaneous Repair of Equine Cartilage.

Cartilage

Kulmala KA, Pulkkinen HJ, Rieppo L, Tiitu V, Kiviranta I, Brünott A, Brommer H, van Weeren R, Brama PA, Mikkola MT, Korhonen RK, Jurvelin JS, Töyräs J.
PMID: 26069636
Cartilage. 2012 Jul;3(3):235-44. doi: 10.1177/1947603511424173.

OBJECTIVE: Contrast-enhanced computed tomography (CECT) has been introduced for the evaluation of cartilage integrity. Furthermore, CECT enables imaging of the structure and density of subchondral bone. In this laboratory study, we investigate the potential of microCECT to simultaneously image...

Characteristics of normal-crowned and pendula spruce (Picea abies (L.) Karst.) examined with reference to the definition of a crop tree ideotype.

Tree physiology

Pöykkö VT, Pulkkinen PO.
PMID: 14972917
Tree Physiol. 1990 Dec;7(1):201-207. doi: 10.1093/treephys/7.1-2-3-4.201.

Sixty-four 19-year-old Norway spruce trees were felled and the roots excavated during 1987 and 1988. The trees were open-pollinated progenies from a small stand located in southern Finland. Several characteristics of stem, crown, and roots were measured and analyzed...

Viability and seasonal distribution patterns of Scots pine pollen in Finland.

Tree physiology

Pulkkinen P, Rantio-Lehtimäki A.
PMID: 14965936
Tree Physiol. 1995 Jul-Aug;15(7):515-518. doi: 10.1093/treephys/15.7-8.515.

Germination ability and airborne counts of Scots pine (Pinus sylvestris L.) pollen were studied during the spring of 1993 at Turku in southern Finland (60 degrees 32' N, 22 degrees 28' E) and at Utsjoki in northern Finland (69...

Harvest index in northern temperate cultivated conifers.

Tree physiology

Pulkkinen P, Pöykkö T, Tigerstedt PM, Velling P.
PMID: 14973001
Tree Physiol. 1989 Mar;5(1):83-98. doi: 10.1093/treephys/5.1.83.

Harvest index is defined and its relationship with primary production, biomass partitioning and yield components in forest trees examined. As stand density has been found to have a major effect on harvest index, it is concluded that further development...

Cluster size distributions in particle systems with asymmetric dynamics.

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

Pulkkinen O, Merikoski J.
PMID: 11736021
Phys Rev E Stat Nonlin Soft Matter Phys. 2001 Nov;64(5):056114. doi: 10.1103/PhysRevE.64.056114. Epub 2001 Oct 23.

We present exact and asymptotic results for clusters in the one-dimensional totally asymmetric exclusion process (TASEP) with two different dynamics. The expected length of the largest cluster is shown to diverge logarithmically with an increasing system size for ordinary...

Translation and reorientation of CD4 molecules in nanoscale cages of zeolites as studied by deuteron spin-lattice relaxation.

The Journal of chemical physics

Birczyński A, Punkkinen M, Szymocha AM, Lalowicz ZT.
PMID: 18052453
J Chem Phys. 2007 Nov 28;127(20):204714. doi: 10.1063/1.2790903.

Deuteron spin-lattice relaxation was applied to study translational and rotational mobility of CD(4) molecules trapped in the cages of zeolites. Tetrahedral methane molecules are treated as quantum rotators. Relaxation rates related to the intraquadrupole interaction are derived for the...

Dynamics of hydroxyl deuterons and bonded water molecules in NaDY(0.8) zeolite as studied by means of deuteron NMR spectroscopy and relaxation.

Solid state nuclear magnetic resonance

Lalowicz ZT, Stoch G, Birczyński A, Punkkinen M, Krzystyniak M, Góra-Marek K, Datka J.
PMID: 20561770
Solid State Nucl Magn Reson. 2010 May-Jun;37(3):91-100. doi: 10.1016/j.ssnmr.2010.04.004. Epub 2010 Jun 08.

Deuteron spin-lattice relaxation and spectra were measured for NaDY (0.8) zeolite containing some heavy water. Two subsystems of deuterons with different mobility were disclosed at low temperatures with their respective relaxation rates differing by two orders of magnitude. Spectra...

Dynamics of proton spin-lattice relaxation in glycerol.

Physical review. B, Condensed matter

Koivula E, Punkkinen M, Tanttila WH, Ylinen EE.
PMID: 9937637
Phys Rev B Condens Matter. 1985 Oct 01;32(7):4556-4564. doi: 10.1103/physrevb.32.4556.

No abstract available.

Correlation effects in the M4,5N4,5O Auger spectra of Xe.

Physical review. A, General physics

Aksela H, Aksela S, Pulkkinen H.
PMID: 9897378
Phys Rev A Gen Phys. 1986 Aug;34(2):1195-1199. doi: 10.1103/physreva.34.1195.

No abstract available.

Shake processes in the Auger decay of resonantly excited 3d94s24p6np states of Kr.

Physical review. A, General physics

Aksela H, Aksela S, Pulkkinen H, Yagishita A.
PMID: 9902017
Phys Rev A Gen Phys. 1989 Dec 01;40(11):6275-6280. doi: 10.1103/physreva.40.6275.

No abstract available.

Showing 1 to 12 of 105 entries