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Showing 1 to 12 of 172 entries
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Nanoelectronic primary thermometry below 4 mK.

Nature communications

Bradley DI, George RE, Gunnarsson D, Haley RP, Heikkinen H, Pashkin YA, Penttilä J, Prance JR, Prunnila M, Roschier L, Sarsby M.
PMID: 26816217
Nat Commun. 2016 Jan 27;7:10455. doi: 10.1038/ncomms10455.

Cooling nanoelectronic structures to millikelvin temperatures presents extreme challenges in maintaining thermal contact between the electrons in the device and an external cold bath. It is typically found that when nanoscale devices are cooled to ∼ 10 mK the...

Methods, units and quality requirements for the analysis of haemoglobin A1c in diabetes mellitus.

World journal of methodology

Penttilä I, Penttilä K, Holm P, Laitinen H, Ranta P, Törrönen J, Rauramaa R.
PMID: 27376018
World J Methodol. 2016 Jun 26;6(2):133-42. doi: 10.5662/wjm.v6.i2.133. eCollection 2016 Jun 26.

The formation of glycohemoglobin, especially the hemoglobin A1c (HbA1c) fraction, occurs when glucose becomes coupled with the amino acid valine in the β-chain of Hb; this reaction is dependent on the plasma concentration of glucose. Since the early 1970s...

Degradation and Crystallization of Cellulose in Hydrogen Chloride Vapor for High-Yield Isolation of Cellulose Nanocrystals.

Angewandte Chemie (International ed. in English)

Kontturi E, Meriluoto A, Penttilä PA, Baccile N, Malho JM, Potthast A, Rosenau T, Ruokolainen J, Serimaa R, Laine J, Sixta H.
PMID: 27761976
Angew Chem Int Ed Engl. 2016 Nov 07;55(46):14455-14458. doi: 10.1002/anie.201606626. Epub 2016 Oct 20.

Despite the structural, load-bearing role of cellulose in the plant kingdom, countless efforts have been devoted to degrading this recalcitrant polysaccharide, particularly in the context of biofuels and renewable nanomaterials. Herein, we show how the exposure of plant-based fibers...

Total Absorption Spectroscopy Study of (92)Rb Decay: A Major Contributor to Reactor Antineutrino Spectrum Shape.

Physical review letters

Zakari-Issoufou AA, Fallot M, Porta A, Algora A, Tain JL, Valencia E, Rice S, Bui VM, Cormon S, Estienne M, Agramunt J, Äystö J, Bowry M, Briz JA, Caballero-Folch R, Cano-Ott D, Cucoanes A, Elomaa VV, Eronen T, Estévez E, Farrelly GF, Garcia AR, Gelletly W, Gomez-Hornillos MB, Gorlychev V, Hakala J, Jokinen A, Jordan MD, Kankainen A, Karvonen P, Kolhinen VS, Kondev FG, Martinez T, Mendoza E, Molina F, Moore I, Perez-Cerdán AB, Podolyák Z, Penttilä H, Regan PH, Reponen M, Rissanen J, Rubio B, Shiba T, Sonzogni AA, Weber C.
PMID: 26382674
Phys Rev Lett. 2015 Sep 04;115(10):102503. doi: 10.1103/PhysRevLett.115.102503. Epub 2015 Sep 04.

The antineutrino spectra measured in recent experiments at reactors are inconsistent with calculations based on the conversion of integral beta spectra recorded at the ILL reactor. (92)Rb makes the dominant contribution to the reactor antineutrino spectrum in the 5-8...

Endoscopic dacryocystorhinostomy as treatment for lower lacrimal pathway obstructions in adults: Review article.

Allergy & rhinology (Providence, R.I.)

Penttilä E, Smirnov G, Tuomilehto H, Kaarniranta K, Seppä J.
PMID: 25860166
Allergy Rhinol (Providence). 2015 Jan;6(1):12-9. doi: 10.2500/ar.2015.6.0116.

Obstruction of the lacrimal pathway is manifested by epiphora, infection, and blurred vision as well as ocular and facial pain. Conservative treatments only achieve temporary relief of symptoms, thus surgery is the treatment of choice. Dacryocystorhinostomy (DCR) is recognized...

On-chip magnetic cooling of a nanoelectronic device.

Scientific reports

Bradley DI, Guénault AM, Gunnarsson D, Haley RP, Holt S, Jones AT, Pashkin YA, Penttilä J, Prance JR, Prunnila M, Roschier L.
PMID: 28374845
Sci Rep. 2017 Apr 04;7:45566. doi: 10.1038/srep45566.

We demonstrate significant cooling of electrons in a nanostructure below 10 mK by demagnetisation of thin-film copper on a silicon chip. Our approach overcomes the typical bottleneck of weak electron-phonon scattering by coupling the electrons directly to a bath...

Circulating nucleosomes as predictive markers of severe acute pancreatitis.

Journal of intensive care

Penttilä AK, Rouhiainen A, Kylänpää L, Mustonen H, Puolakkainen P, Rauvala H, Repo H.
PMID: 26893906
J Intensive Care. 2016 Feb 17;4:14. doi: 10.1186/s40560-016-0135-6. eCollection 2016.

BACKGROUND: The components of nucleosomes, which contain DNA and histones, are released into the circulation from damaged cells and can promote inflammation. We studied whether the on-admission levels of circulating nucleosomes predict the development of severe acute pancreatitis (AP),...

Diagnosis of Knee Osteochondral Lesions With Ultrasound Imaging.

Arthroscopy techniques

Penttilä P, Liukkonen J, Joukainen A, Virén T, Jurvelin JS, Töyräs J, Kröger H.
PMID: 26697300
Arthrosc Tech. 2015 Sep 14;4(5):e429-33. doi: 10.1016/j.eats.2015.04.002. eCollection 2015 Oct.

Evaluation of articular cartilage and subchondral bone is essential in the diagnosis of joint diseases and injuries. Interobserver and intraobserver reproducibilities of arthroscopic grading are only poor to moderate. Thus, for quantitative and objective evaluation of cartilage and subchondral...

Evolution of the N=50 shell gap energy towards 78Ni.

Physical review letters

Hakala J, Rahaman S, Elomaa VV, Eronen T, Hager U, Jokinen A, Kankainen A, Moore ID, Penttilä H, Rinta-Antila S, Rissanen J, Saastamoinen A, Sonoda T, Weber C, Aystö J.
PMID: 18764386
Phys Rev Lett. 2008 Aug 01;101(5):052502. doi: 10.1103/PhysRevLett.101.052502. Epub 2008 Jul 31.

Atomic masses of the neutron-rich isotopes (76-80)Zn, (78-83)Ga, (80-85)Ge, (81-87)As, and (84-89)Se have been measured with high precision using the Penning trap mass spectrometer JYFLTRAP at the IGISOL facility. The masses of (82,83)Ga, (83-85)Ge, (84-87)As, and 89Se were measured...

Neutron beam effects on spin-exchange-polarized 3He.

Physical review letters

Sharma M, Babcock E, Andersen KH, Barrón-Palos L, Becker M, Boag S, Chen WC, Chupp TE, Danagoulian A, Gentile TR, Klein A, Penttila S, Petoukhov A, Soldner T, Tardiff ER, Walker TG, Wilburn WS.
PMID: 18764610
Phys Rev Lett. 2008 Aug 22;101(8):083002. doi: 10.1103/PhysRevLett.101.083002. Epub 2008 Aug 20.

We have observed depolarization effects when high intensity cold neutron beams are incident on alkali-metal spin-exchange-polarized 3He cells used as neutron spin filters. This was first observed as a reduction of the maximum attainable 3He polarization and was attributed...

[Not Available].

Duodecim; laaketieteellinen aikakauskirja

Penttilä J, Appel H, Rintahaka P, Heikkinen R, Syvälahti E.
PMID: 17612114
Duodecim. 2007;123(7):812-8.

No abstract available.

Light-scattering efficiency of starch acetate pigments as a function of size and packing density.

Applied optics

Penttilä A, Lumme K, Kuutti L.
PMID: 16708095
Appl Opt. 2006 May 20;45(15):3501-9. doi: 10.1364/ao.45.003501.

We study theoretically the light-scattering efficiency of paper coatings made of starch acetate pigments. For the light-scattering code we use a discrete dipole approximation method. The coating layer is assumed to consists of roughly equal-sized spherical pigments packed either...

Showing 1 to 12 of 172 entries