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Showing 1 to 12 of 511 entries
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Dynamics of high-speed micro-drop impact: numerical simulations and experiments at frame-to-frame times below 100 ns.

Soft matter

Visser CW, Frommhold PE, Wildeman S, Mettin R, Lohse D, Sun C.
PMID: 25607820
Soft Matter. 2015 Mar 07;11(9):1708-22. doi: 10.1039/c4sm02474e.

Technologies including (3D-) (bio-)printing, diesel engines, laser-induced forward transfer, and spray cleaning require optimization and therefore understanding of micrometer-sized droplets impacting at velocities beyond 10 m s(-1). However, as yet, this regime has hardly been addressed. Here we present...

Forces encountered by a sphere during impact into sand.

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

Joubaud S, Homan T, Gasteuil Y, Lohse D, van der Meer D.
PMID: 25615033
Phys Rev E Stat Nonlin Soft Matter Phys. 2014 Dec;90(6):060201. doi: 10.1103/PhysRevE.90.060201. Epub 2014 Dec 15.

We describe direct measurements of the acceleration of an object impacting on a loosely packed granular bed under various pressures, using an instrumented sphere. The sphere acts as a noninvasive probe that measures and continuously transmits the acceleration as...

Electrolysis-Driven and Pressure-Controlled Diffusive Growth of Successive Bubbles on Microstructured Surfaces.

Langmuir : the ACS journal of surfaces and colloids

van der Linde P, Moreno Soto Á, Peñas-López P, Rodríguez-Rodríguez J, Lohse D, Gardeniers H, van der Meer D, Fernández Rivas D.
PMID: 29041778
Langmuir. 2017 Nov 14;33(45):12873-12886. doi: 10.1021/acs.langmuir.7b02978. Epub 2017 Oct 31.

Control over the bubble growth rates forming on the electrodes of water-splitting cells or chemical reactors is critical with respect to the attainment of higher energy efficiencies within these devices. This study focuses on the diffusion-driven growth dynamics of...

How a Surface Nanodroplet Sits on the Rim of a Microcap.

Langmuir : the ACS journal of surfaces and colloids

Peng S, Dević I, Tan H, Lohse D, Zhang X.
PMID: 27183892
Langmuir. 2016 Jun 14;32(23):5744-54. doi: 10.1021/acs.langmuir.6b01153. Epub 2016 Jun 03.

The location and morphology of femtoliter nanodroplets that nucleate and grow on a microcap-decorated substrate in contact with a liquid phase were investigated. We experimentally examined four different wetting combinations of the flat area and the microcaps. The results...

Protocol for a scoping review to identify and map the global health personnel considered skilled attendants at birth in low and middle-income countries between 2000 and 2015.

BMJ open

Hobbs AJ, Moller AB, Carvajal-Aguirre L, Amouzou A, Chou D, Say L.
PMID: 29038182
BMJ Open. 2017 Oct 15;7(10):e017229. doi: 10.1136/bmjopen-2017-017229.

INTRODUCTION: Despite progress towards the Millennium Development Goals (MDG), maternal mortality remains high in countries where there are shortages of skilled personnel able to manage and provide quality care during pregnancy and childbirth. The 'percentage of births attended by...

Type III chaperones & Co in bacterial plant pathogens: a set of specialized bodyguards mediating effector delivery.

Frontiers in plant science

Lohou D, Lonjon F, Genin S, Vailleau F.
PMID: 24319448
Front Plant Sci. 2013 Nov 22;4:435. doi: 10.3389/fpls.2013.00435.

Gram-negative plant pathogenic bacteria possess a type III secretion system (T3SS) to inject bacterial proteins, called type III effectors (T3Es), into host cells through a specialized syringe structure. T3Es are virulence factors that can suppress plant immunity but they...

Toward 3D Printing of Pure Metals by Laser-Induced Forward Transfer.

Advanced materials (Deerfield Beach, Fla.)

Visser CW, Pohl R, Sun C, Römer GW, Huis in 't Veld B, Lohse D.
PMID: 26045211
Adv Mater. 2015 Jul 15;27(27):4087-92. doi: 10.1002/adma.201501058. Epub 2015 Jun 05.

3D printing of common metals is highly challenging because metals are generally solid at room conditions. Copper and gold pillars are manufactured with a resolution below 5 μm and a height up to 2 mm, using laser-induced forward transfer...

Effects of the two carvone enantiomers on soil enzymes involved in the C, P, and N cycles.

Journal of biological research (Thessalonike, Greece)

Papatheodorou EM, Margariti C, Vokou D.
PMID: 25984490
J Biol Res (Thessalon). 2014 May 20;21(1):7. doi: 10.1186/2241-5793-21-7. eCollection 2014 Dec.

BACKGROUND: Essential oils exert stimulatory or inhibitory effects on the size and activity of the soil microbial communities. Given that microbial biomass is the main source of soil enzymes, in this study, we examined how R-(-)- and S-(+)-carvone affect...

Development and Validation of a Preoperative Ultrasound Staging System for Predicting Level of Laparoscopic Endometriosis Surgery Required.

Journal of minimally invasive gynecology

Gerges B, Lu C, Reid S, Menakaya U, Nadim B, Chou D, Condous G.
PMID: 27679191
J Minim Invasive Gynecol. 2015 Nov-Dec;22(6):S26-S27. doi: 10.1016/j.jmig.2015.08.076. Epub 2015 Oct 15.

No abstract available.

Therapeutic drug monitoring and tyrosine kinase inhibitors.

Oncology letters

Herviou P, Thivat E, Richard D, Roche L, Dohou J, Pouget M, Eschalier A, Durando X, Authier N.
PMID: 27446421
Oncol Lett. 2016 Aug;12(2):1223-1232. doi: 10.3892/ol.2016.4780. Epub 2016 Jun 24.

The therapeutic activity of drugs can be optimized by establishing an individualized dosage, based on the measurement of the drug concentration in the serum, particularly if the drugs are characterized by an inter-individual variation in pharmacokinetics that results in...

Dynamic Leidenfrost Effect: Relevant Time and Length Scales.

Physical review letters

Shirota M, van Limbeek MA, Sun C, Prosperetti A, Lohse D.
PMID: 26918994
Phys Rev Lett. 2016 Feb 12;116(6):064501. doi: 10.1103/PhysRevLett.116.064501. Epub 2016 Feb 10.

When a liquid droplet impacts a hot solid surface, enough vapor may be generated under it to prevent its contact with the solid. The minimum solid temperature for this so-called Leidenfrost effect to occur is termed the Leidenfrost temperature,...

Formation of surface nanodroplets under controlled flow conditions.

Proceedings of the National Academy of Sciences of the United States of America

Zhang X, Lu Z, Tan H, Bao L, He Y, Sun C, Lohse D.
PMID: 26159418
Proc Natl Acad Sci U S A. 2015 Jul 28;112(30):9253-7. doi: 10.1073/pnas.1506071112. Epub 2015 Jul 09.

Nanodroplets on a solid surface (i.e., surface nanodroplets) have practical implications for high-throughput chemical and biological analysis, lubrications, laboratory-on-chip devices, and near-field imaging techniques. Oil nanodroplets can be produced on a solid-liquid interface in a simple step of solvent...

Showing 1 to 12 of 511 entries