Results 61 to 70 of about 3,058,814 (268)

Optical trapping with a perfect vortex beam

, 2014
The authors would like to thank the UK Engineering and Physical Sciences Research Council (EPSRC) for funding.Vortex beams with different topological charge usually have different profiles and radii of peak intensity.
Arita, Yoshihiko, Ewan M. Wright, Wright, Ewan M., Michael Mazilu, Chen, Mingzhou, Mazilu, Michael, Dholakia, Kishan, Yoshihiko Arita, Mingzhou Chen, Kishan Dholakia   +9 more
core   +1 more source

Earth Observation, Remote Sensing, and Geoscientific Ground Investigations for Archaeological and Heritage Research

Geosciences, 2019
Building upon the positive outcomes and evidence of dissemination across the community of the first Special Issue “Remote Sensing and Geosciences for Archaeology„, the second edition of this Special Series of Geosciences dedicated to “ ...
Deodato Tapete
doaj   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Processing ultrafast optical signals in broadband telecom systems by means of cascaded quadratic nonlinearities [PDF]

, 2006
Quadratic optical nonlinearities offer several attractive features for the implementation of ultra-fast, low-noise and transparent telecom devices.
David Richardson, Gallo, Katia, Richardson, David, Richardson, David J., Prawiharjo, Jerry, Francesca Parmigiani, Paulo Almeida, Parmigiani, Francesca, Jerry Prawiharjo, Gallo, Katia,, Periklis Petropoulos, Almeida, Paulo, Katia Gallo, Petropoulos, Periklis   +13 more
core   +1 more source

Non-Contact Heart Rate and Respiration Rate Monitoring for Elderly Care

Current Directions in Biomedical Engineering
As the nursing shortage in Germany continues to intensify, the necessity for user-friendly assistance systems is becoming increasingly important. This paper describes an approach for the automatic and regular recording of vital signs using consumer-grade
Kobel Svenja Nicola, Önel Hüseyin, Reßing Caroline, Wiede Christian, Seidl Karsten   +4 more
doaj   +1 more source

Effect of Au Nanoparticles Doping on The Properties of TiO2 Thin Films

Medžiagotyra, 2014
In this study, pure and gold (Au) nanoparticles doped TiO2 thin films (Au/Ti = 10, 20, 30, 40 and 50 at%) were prepared by sol-gel method and the impact of Au nanoparticles doping on the optical, structural and morphological properties of these thin ...
Aytaç GÜLTEKİN
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

THE EFFECT OF C u AND Sn ON SOME PHYSICAL PROPERTIES OF CdS THIN FILMS PREPARED BY SPRAY PYROLYSIS [PDF]

مجلة جامعة الانبار للعلوم الصرفة, 2012
In this investigation, thin films of CdS doped with Cu and Sn were prepared on glass substrate using spray pyrolysis techniques. The X-ray diffraction results obtained that the films are polycrystalline and having many phases depends on the doping type ...
HAMID S. AL- JUMAILI
doaj   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

FEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Force measurements with optical tweezers inside living cells

, 2014
The force exerted by optical tweezers can be measured by tracking the momentum changes of the trapping beam, a method which is more general and powerful than traditional calibration techniques as it is based on first principles, but which has not been ...
Farre, A., Martin-Badosa, E., Josep Mas, Jordi Sancho-Parramon, Arnau Farré, Sancho-Parramon, J., Montes-Usategui, M., Mario Montes-Usategui, Mas, J., Estela Martín-Badosa   +9 more
core   +1 more source