Results 71 to 80 of about 112,401 (267)

MRI Epicenters Differentiate Spatiotemporal Patterns of Neurodegeneration in Parkinson's Disease

Advanced Science, EarlyView.
A connectivity‐based MRI epicenter model identifies two Parkinson's disease subtypes: subtype 1 with infratentorial‐dominant epicenters, severe motor symptoms, and rapid progression; and subtype 2 with supratentorial‐dominant epicenters with mild progression.
Xiaojie Duanmu, Zihao Zhu, Jiaqi Wen, Jianmei Qin, Qianshi Zheng, Weijin Yuan, Yingni Jin, Nan Lu, Lu Wang, Cheng Zhou, Tao Guo, Haoting Wu, Chenqing Wu, Ziyi Zhu, Lifang Wang, Jingwen Chen, Jingjing Wu, Bingting Zhu, Yuelin Fang, Yaping Yan, Baorong Zhang, Minming Zhang, Xiaojun Guan, Xiaojun Xu   +23 more
wiley   +1 more source

Carboxyl-modified single-wall carbon nanotubes improve bone tissue formation in vitro and repair in an in vivo rat model. [PDF]

, 2014
The clinical management of bone defects caused by trauma or nonunion fractures remains a challenge in orthopedic practice due to the poor integration and biocompatibility properties of the scaffold or implant material. In the current work, the osteogenic
Barrientos-Durán, Antonio, Carpenter, Ellen M, Malinin, Theodore I, Rodríguez-Manzaneque, Juan Carlos, Zanello, Laura P, Zur Nieden, Nicole I   +5 more
core   +2 more sources

Volumetric Additive Manufacturing of Dormant Catalytic Chemistries to Generate Silicone Micro‐ and Millifluidic Devices and Instant Molds

Advanced Science, EarlyView.
We describe use of a novel zero‐dose approach to tomographic volumetric additive manufacturing that has enabled us to print silicone micro‐ and millifluidic devices and instant molds within minutes. The silicones are polymerized using photoactivated dormant platinum photohydrosilylation catalysts that would traditionally be difficult to access in ...
Johanna A. Vandenbrande, Martin P. De Beer, Erika J. Fong, Aftab Bhanvadia, Massimiliano Ferrucci, Wilson Kong, Daniel Wang, Ryan M. Hensleigh, Michell Marufu, James S. Oakdale, Fangyou Xie, Maxim Shusteff, Johanna J. Schwartz   +12 more
wiley   +1 more source

Realization of a single-chip, SiGe:C-based power amplifier for multi-band WiMAX applications [PDF]

, 2010
A fully-integrated Multi-Band PA using 0.25 μm SiGe:C process with an output power of above 25 dBm is presented. The behaviour of the amplifier has been optimized for multi-band operation covering, 2.4 GHz, 3.6 GHz and 5.4 GHz (UWB-WiMAX) frequency bands
Gurbuz, Yasar, Gürbüz, Yaşar, Kaynak, Mehmet, Tekin, İbrahim, Tekin, Ibrahim   +4 more
core  

Commensurability oscillations in the rf conductivity of unidirectional lateral superlattices: measurement of anisotropic conductivity by coplanar waveguide

, 2012
We have measured the rf magnetoconductivity of unidirectional lateral superlattices (ULSLs) by detecting the attenuation of microwave through a coplanar waveguide placed on the surface. ULSL samples with the principal axis of the modulation perpendicular
Adachi S., Ando T., Appleyard N. J., Chen Y. P., Chen Y. P., Chen Y. P., Chen Y. P., Chow E., Chow E., Davies J. H., Endo A., Endo A., Endo A., Endo A., Endo A., Engel L. W., Hirakawa K., Isihara A., Karpus V., Karpus V., Karpus V., Lewis R. M., Lewis R. M., Lewis R. M., Lewis R. M., Liao S. Y., Lyo S. K., Lyo S. K., Ma Y., Mittal A., Mittal A., Neudecker B., Peeters F. M., Price P. J., Proetto C. R., Rendell R. W., Sambandamurthy G., Schliewe R. R., Skuras E., Wakabayashi J., Weiss D., Wen C. P., Wennberg A. K. M., Ye P. D., Zhang C., Zhu H., Zhu H., Zhu H.   +47 more
core   +1 more source

Narrow line width frequency comb source based on an injection-locked III–V-on-silicon mode-locked laser [PDF]

, 2016
In this paper, we report the optical injection locking of an L-band (similar to 1580 nm) 4.7 GHz III-V-on-silicon mode-locked laser with a narrow line width continuous wave (CW) source. This technique allows us to reduce the MHz optical line width of the
Duan, Guang-Hua, Keyvaninia, Shahram, Kuyken, Bart, Lelarge, Francois, Roelkens, Günther, Uvin, Sarah   +5 more
core   +1 more source

Ultra‐Thin Oxide‐Based Double‐Layer Architecture Achieves Wide‐Temperature Broadband Microwave Absorption by Synergizing Lorentz Resonance and Thermionic Transport

Advanced Science, EarlyView.
Developing ultrathin wide‐temperature adaptive microwave absorption materials (MAMs) is crucial for enhancing the survival of military devices under alternating high‐temperature environment. Here, a double‐layer La2Zr2O7/Eu2Zr2O7 architecture is employed, with rare‐earth zirconates featuring with one‐eighth anion‐site vacancies, successfully achieving ...
Zewen Duan, Ruopeng Cui, Yi Li, Lu Gao, Xuefei Zhang, Lingfeng Yuan, Biao Zhao, Chunlei Wan   +7 more
wiley   +1 more source

A 23 GHz Active Mixer with Integrated Diode Linearizer in SiGe BiCMOS Technology [PDF]

, 2003
Active mixers operating at 23 GHz are designed and fabricated in SiGe technology.An integrated diode linearizer is used to improve the linearity of the mixer.Measurement and simulation show excellent agreement.Typically,10 dB double-sideband noise figure,
Bao, Mingquan, Cathelin, Andreia, Li, Yinggang   +2 more
core   +1 more source

All‐Optical Logic Gates and Programmable Photonic Organo‐Polymer Devices

Advanced Electronic Materials, EarlyView.
Four PDMS‐based photonic devices imitating the shapes of Y‐structure, hexagonal mesh, dual in‐phase quadrature, and cascaded MZI array are demonstrated and shown to function as all‐optical OR gates. Furthermore, a PDMS hexagonal mesh, containing dye‐doped regions, is shown to enable performance as a programmable photonic device, where its ...
Coral Raz, Alexandra Inberg, Amir Handelman   +2 more
wiley   +1 more source

Screw‐Based Pill for Intelligent Robotic Extraction of Viscous Fluids in Medical Applications

Advanced Intelligent Systems, EarlyView.
Screw‐based pill for intelligent robotic extraction (S‐PIRE) is a magnetically actuated smart capsule with a motorized screw, 3‐axis sensor, and Bluetooth control for site‐specific and minimally invasive remote sampling of viscous fluids, overcoming passive diffusion limitations.
Prima Dewi Sinawang, Victor Garcia‐Gradilla, Fernando Soto, Demir Akin, Margaret Braunreuther, Gerald G. Fuller, Utkan Demirci   +6 more
wiley   +1 more source