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Showing 265 to 276 of 289 entries
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Fragmentation of protonated O,O-dimethyl O-aryl phosphorothionates in tandem mass spectral analysis.

Journal of the American Society for Mass Spectrometry

Kuivalainen T, Kostiainen R, Björk H, Uggla R, Sundberg MR.
PMID: 24214301
J Am Soc Mass Spectrom. 1995 Jun;6(6):488-97. doi: 10.1016/1044-0305(95)00188-J.

A study was carried out on the fragmentation of 12 protonated O,O-dimethyl O-aryl phosphorothionates by tandem quadrupole mass spectrometry. Some of the studied compounds are used in agriculture as pesticides. Energy-resolved and pressure-resolved experiments were performed on the [M...

Integration of a Droplet-Based Microfluidic System and Silicon Nanoribbon FET Sensor.

Micromachines

Afrasiabi R, Soderberg LM, Joensson HN, Björk P, Andersson Svahn H, Linnros J.
PMID: 30404306
Micromachines (Basel). 2016 Aug 05;7(8). doi: 10.3390/mi7080134.

We present a novel microfluidic system that integrates droplet microfluidics with a silicon nanoribbon field-effect transistor (SiNR FET), and utilize this integrated system to sense differences in pH. The device allows for selective droplet transfer to a continuous water...

Evaluation Challenges in the Validation of B7-H3 as Oral Tongue Cancer Prognosticator.

Head and neck pathology

Sieviläinen M, Wirsing AM, Hyytiäinen A, Almahmoudi R, Rodrigues P, Bjerkli IH, Åström P, Toppila-Salmi S, Paavonen T, Coletta RD, Hadler-Olsen E, Salo T, Al-Samadi A.
PMID: 32959211
Head Neck Pathol. 2021 Jun;15(2):469-478. doi: 10.1007/s12105-020-01222-3. Epub 2020 Sep 21.

B7-H3 was the only molecule identified with prognostic potential from a recent systematic review of the prognostic value of immune checkpoints in oral cancer. We aimed to validate this finding in a multicenter international cohort. We retrospectively retrieved 323...

Occupational trajectories of working conditions in Sweden: Development trends in the workforce, 1997-2015.

Scandinavian journal of work, environment & health

Corin L, Pousette A, Berglund T, Dellve L, Hensing G, Björk L.
PMID: 33778895
Scand J Work Environ Health. 2021 Jul 01;47(5):335-348. doi: 10.5271/sjweh.3955. Epub 2021 Mar 29.

OBJECTIVE: This study aimed to explore the development of working conditions within and between occupations in the Swedish labor market from 1997 to 2015 and whether any polarization in working conditions concurrently occurred between occupations.METHODS: Cross-sectional data from ten...

Inter-annual variation in prevalence of Borrelia burgdorferi sensu stricto and Anaplasma phagocytophilum in host-seeking Ixodes scapularis (Acari: Ixodidae) at long-term surveillance sites in the upper midwestern United States: Implications for public health practice.

Ticks and tick-borne diseases

Foster E, Burtis J, Sidge JL, Tsao JI, Bjork J, Liu G, Neitzel DF, Lee X, Paskewitz S, Caporale D, Eisen RJ.
PMID: 34929604
Ticks Tick Borne Dis. 2021 Dec 05;13(2):101886. doi: 10.1016/j.ttbdis.2021.101886. Epub 2021 Dec 05.

The geographic range of the blacklegged tick, Ixodes scapularis, and its associated human pathogens have expanded substantially over the past 20 years putting an increasing number of persons at risk for tick-borne diseases, particularly in the upper midwestern and...

A new SARS-CoV-2 lineage that shares mutations with known Variants of Concern is rejected by automated sequence repository quality control.

bioRxiv : the preprint server for biology

Thornlow B, Hinrichs AS, Jain M, Dhillon N, La S, Kapp JD, Anigbogu I, Cassatt-Johnstone M, McBroome J, Haeussler M, Turakhia Y, Chang T, Olsen HE, Sanford J, Stone M, Vaske O, Bjork I, Akeson M, Shapiro B, Haussler D, Kilpatrick AM, Corbett-Detig R.
PMID: 33851162
bioRxiv. 2021 Apr 06; doi: 10.1101/2021.04.05.438352.

We report a SARS-CoV-2 lineage that shares N501Y, P681H, and other mutations with known variants of concern, such as B.1.1.7. This lineage, which we refer to as B.1.x (COG-UK sometimes references similar samples as B.1.324.1), is present in at...

Revival of ecological studies during the COVID-19 pandemic.

European journal of epidemiology

Björk J, Modig K, Kahn F, Ahlbom A.
PMID: 34951671
Eur J Epidemiol. 2021 Dec;36(12):1225-1229. doi: 10.1007/s10654-021-00830-9. Epub 2021 Dec 24.

No abstract available.

Observation of a laserlike transition in a microcavity exciton polariton system.

Physical review. A, Atomic, molecular, and optical physics

Björk G, Cao H, Imamoglu A, Jacobson J, Pau S, Yamamoto Y.
PMID: 9913765
Phys Rev A. 1996 Sep;54(3):R1789-R1792. doi: 10.1103/physreva.54.r1789.

No abstract available.

Direct creation of quantum well excitons by electron resonant tunneling.

Physical review letters

Björk G, Cao H, Klimovitch G, Yamamoto Y.
PMID: 10060217
Phys Rev Lett. 1995 Aug 07;75(6):1146-1149. doi: 10.1103/PhysRevLett.75.1146.

No abstract available.

Experimental realization of a semiconductor photon number amplifier and a quantum optical tap.

Physical review letters

Björk G, Goobar E, Karlsson A.
PMID: 10054558
Phys Rev Lett. 1993 Sep 27;71(13):2002-2005. doi: 10.1103/PhysRevLett.71.2002.

No abstract available.

On-Surface Synthesis of Ethynylene-Bridged Anthracene Polymers.

Angewandte Chemie (International ed. in English)

Sánchez-Grande A, de la Torre B, Santos J, Cirera B, Lauwaet K, Chutora T, Edalatmanesh S, Mutombo P, Rosen J, Zbořil R, Miranda R, Björk J, Jelínek P, Martín N, Écija D.
PMID: 30761719
Angew Chem Int Ed Engl. 2019 May 13;58(20):6559-6563. doi: 10.1002/anie.201814154. Epub 2019 Mar 12.

Engineering low-band-gap π-conjugated polymers is a growing area in basic and applied research. The main synthetic challenge lies in the solubility of the starting materials, which precludes advancements in the field. Here, we report an on-surface synthesis protocol to...

Intermolecular Hybridization Creating Nanopore Orbital in a Supramolecular Hydrocarbon Sheet.

Nano letters

Zhang YQ, Björk J, Barth JV, Klappenberger F.
PMID: 27253516
Nano Lett. 2016 Jul 13;16(7):4274-81. doi: 10.1021/acs.nanolett.6b01324. Epub 2016 Jun 07.

Molecular orbital engineering is a key ingredient for the design of organic devices. Intermolecular hybridization promises efficient charge carrier transport but usually requires dense packing for significant wave function overlap. Here we use scanning tunneling spectroscopy to spatially resolve...

Showing 265 to 276 of 289 entries