Results 101 to 110 of about 340,877 (291)

Light‐Actuated Fiber‐Climbing Inchworm Robot Toward Endoluminal Navigation

Advanced Functional Materials, EarlyView.
A kirigami‐inspired soft inchworm robot harnesses optical energy from a customized side‐emitting optical fiber, guaranteeing its propulsion along the fiber body. The wavelength‐selective responsiveness of dye‐functionalized liquid crystal elastomers and the application of temporal illumination patterns enable sequential control of robot components. The
Antonio Lobosco, Leilei Song, Fan Liu, Yu‐Hsiang Lin, Venkatasubramanian Kalpathy Venkiteswaran, Hao Zeng, Sarthak Misra   +6 more
wiley   +1 more source

Quadrupole shapes

Physical Review Special Topics. Accelerators and Beams, 2012
The usual practice of constructing quadrupoles from truncated cylindrical hyperbolae is put into question. A new shape is proposed. This shape has an analytic potential function.
R. Baartman
doaj   +1 more source

Star formation rate indicators in the Sloan Digital Sky Survey

, 2003
The Sloan Digital Sky Survey (SDSS) first data release provides a database of 106000 unique galaxies in the main galaxy sample with measured spectra.
A. J. Connolly, A. M. Hopkins, Brocklehurst M., Buat V., C. A. Tremonti, C. J. Miller, Chi X., D. Q. Lamb, de Jong T., Fioc M., Goto T., J. Brinkmann, M. Bernardi, P. L. Gomez, R. C. Nichol, T. Goto, Tresse L., Ž. Ivezić   +17 more
core   +1 more source

SiO2‐CaOCME/Poly(Tetrahydrofuran)/Poly(Caprolactone) 3D‐Printed Scaffolds Drive Human‐Bone Marrow Stromal Cell Osteogenic Differentiation

Advanced Healthcare Materials, EarlyView.
3D printed hybrid scaffolds combining bioactive silica–calcium chemistry with elastic polymers guide human bone stem cells to form bone. The scaffolds support cell survival, organization, and invasion while releasing osteogenic ions. Together, architecture and composition drive bone‐specific gene expression, extracellular matrix organization, and ...
David R. Sory, Agathe C.M. Heyraud, Julian R. Jones, Sara M. Rankin   +3 more
wiley   +1 more source

DESIGN OF MULTILAYER APERTURE COUPLED STACKED MICROSTRIP PATCH ANTENNA FOR WLAN APPLICATIONS [PDF]

ICTACT Journal on Communication Technology, 2015
One of the major drawbacks of microstrip patch antenna is its narrow bandwidth. The solution of this problem is to use aperture coupled stacked micro strip patch antenna.
P. Jothilakshmi, J. Bharanitharan, V. Ramkumar   +2 more
doaj  

Long-term variability of the optical spectra of NGC 4151: I. Light curves and flux correlations

, 2008
Results of a long-term spectral monitoring of the active galactic nucleus of NGC 4151 are presented (11 years, from 1996 to 2006). High quality spectra (S/N>50 in the continuum near Halpha and Hbeta) were obtained in the spectral range ~4000 to 7500 \AA,
A. I. Shapovalova, A. Kovačević, A. Mercado, A. N. Burenkov, Antonucci, Bentz, Bochkarev, Bochkarev, Clavel, Collin-Souffrin, D. Dultzin, Dumont, E. Benítez, Edelson, Evans, Gaskell, Gaskell, J. León-Tavares, J. R. Valdes, Kaspi, Korista, L. Carrasco, L. Č. Popović, Lyuty, Malkov, Maoz, Martel, Metzroth, Murray, N. Borisov, N. G. Bochkarev, Nazarova, Oknyanskij, Penston, Peterson, Peterson, Peterson, Peterson, S. Collin, Sergeev, Shapovalova, Shapovalova, Ulrich, Ulrich, Ulrich, Ulvestad, V. E. Zhdanova, V. H. Chavushyan, V. V. Vlasuyk, Van Groningen, Vlasyuk, Yaqoob   +51 more
core   +2 more sources

Optoelectrical Devices for Neural Interfacing: Engineering Integration, Stability, and Multimodal Sensing

Advanced Healthcare Materials, EarlyView.
Implantable optoelectrical devices are an effective resource for the modulation and monitoring of neural activity with high spatiotemporal resolution. This review discusses current challenges faced by these devices and outlines future perspectives for the development of next‐generation neural interfaces targeting chronic, multisite, and multimodal ...
Stella Aslanoglou, Barbara Spagnolo, Antonio Balena, Massimo De Vittorio, Ferruccio Pisanello   +4 more
wiley   +1 more source

The Impact of Nonlinear Flow Regime on the Flow Rate in Fractal Fractures

Fluids
Geometric properties of fractures, such as aperture and width, among others, significantly affect the fluid flow behaviors in fractured media. Previous studies have shown that fractures exhibit fractal properties.
Jianting Zhu
doaj   +1 more source

Optimizing the G/T ratio of the DSS-13 34-meter beam-waveguide antenna [PDF]

, 1992
Calculations using Physical Optics computer software were done to optimize the gain-to-noise-temperature (G/T) ratio of Deep Space Station (DSS)-13, the Deep Space Network's (DSN's) 34-m beam-waveguide antenna, at X-band for operation with the ultra-low ...
Esquivel, M. S.
core   +1 more source

Weak lensing mass reconstructions of the ESO Distant Cluster Survey

, 2005
We present weak lensing mass reconstructions for the 20 high-redshift clusters i n the ESO Distant Cluster Survey. The weak lensing analysis was performed on deep, 3-color optical images taken with VLT/FORS2, using a composite galaxy catalog with ...
A. Aragón-Salamanca, B. Milvang-Jensen, B. Poggianti, Bertin, Bolzonella, Bruzual, C. Halliday, Clowe, Clowe, Clowe, Clowe, Clowe, D. Clowe, D. Zaritsky, Dahle, Eke, Evrard, Fahlman, Fontana, Frenk, G. De Lucia, G. Rudnick, Gioia, Gonzalez, Halliday, Henry, Henry, Henry, Kaiser, Kneib, L. Simard, Luppino, M. Bremer, Navarro, Oukbir, P. Jablonka, P. Schneider, R. Pelló, R. Saglia, Rudnick, Rudnick, S. White, Schlegel, Schneider, Schneider, Seitz, van den Bosch, van Waerbeke, Wechsler, White   +49 more
core   +4 more sources