Results 21 to 30 of about 21,717,715 (348)

Functional Organization of Visual Cortex in the Owl Monkey [PDF]

open access: yes, 2004
In this study, we compared the organization of orientation preference in visual areas V1, V2, and V3. Within these visual areas, we also quantified the relationship between orientation preference and cytochrome oxidase (CO) staining patterns. V1 maps of
Bosking, W.   +5 more
core   +1 more source

High-Selectivity Bandpass Filter Based on Two Merged Ring Resonators [PDF]

open access: yesRadioengineering, 2021
A high-selectivity bandpass filter (BPF) based on two merged ring resonators is presented in this paper. The structure of this proposed BPF can be seen as the two one-wavelength ring resonators merged each other by sharing the common λg/2 microstrip line.
X. Y. Weng   +4 more
doaj  

A Low-Profile Dual-Band Filtering Hybrid Antenna With Broadside Radiation Based on Patch and SIW Resonators

open access: yesIEEE Open Journal of Antennas and Propagation, 2021
This paper presents a differentially fed dual-band hybrid antenna with broadside radiation, enhanced bandwidth, and high selectivity. The proposed antenna is constructed using a single- layer substrate based on rectangular patch resonator and substrate ...
Qianwen Liu, Lei Zhu
doaj   +1 more source

High-dimensional variable selection

open access: yesThe Annals of Statistics, 2009
This paper explores the following question: what kind of statistical guarantees can be given when doing variable selection in high-dimensional models? In particular, we look at the error rates and power of some multi-stage regression methods. In the first stage we fit a set of candidate models.
Wasserman, Larry, Roeder, Kathryn
openaire   +5 more sources

High selectivity of photocatalytic reduction of CO2 to CO based on terpyridine ligand supported CuI metal organic framework

open access: yesFrontiers in Chemistry, 2022
In this work, a 4’-(4-cynaophenyl)-4,2’:6′,4-terpyridine supported CuI MOFs photocatalyst (CuIMOF) was applied to the photocatalytic CO2 reduction for the first time.
Wen-Dong Zhang   +9 more
doaj   +1 more source

Z-Selective Homodimerization of Terminal Olefins with a Ruthenium Metathesis Catalyst [PDF]

open access: yes, 2011
The cross-metathesis of terminal olefins using a novel ruthenium catalyst results in excellent selectivity for the Z-olefin homodimer. The reaction was found to tolerate a large number of functional groups, solvents, and temperatures while maintaining ...
Endo, Koji   +3 more
core   +2 more sources

High‐Silica CHA Zeolite Membrane with Ultra‐High Selectivity and Irradiation Stability for Krypton/Xenon Separation

open access: yesAngewandte Chemie, 2021
Capture and storage of the long‐lived 85Kr is an efficient approach to mitigate the emission of volatile radionuclides from the spent nuclear fuel reprocessing facilities. However, it is challenging to separate krypton (Kr) from xenon (Xe) because of the
Xuerui Wang   +9 more
semanticscholar   +1 more source

High Selectivity Oxygen Delignification [PDF]

open access: yes, 2005
Project Objective: The objectives of this project are as follows: (1) Examine the physical and chemical characteristics of a partner mill pre- and post-oxygen delignified pulp and compare them to lab generated oxygen delignified pulps; (2) Apply the chemical selectivity enhancement system to the partner pre-oxygen delignified pulps under mill ...
Arthur Ragauskas   +2 more
openaire   +3 more sources

Bandpass Filter Based on Spoof Surface Plasmon Polaritons With a Switchable High-Selectivity Notch Band

open access: yesFrontiers in Physics, 2021
A substrate integrated waveguide (SIW) based spoof surface plasmon polariton (SSPP) is proposed for the design of bandpass filter (BPF). The left and right edge cutoff frequencies of the passband can be easily adjusted by changing the parameters of SIW ...
Longfei Tan   +4 more
doaj   +1 more source

Structural basis for high selectivity of a rice silicon channel Lsi1

open access: yesNature Communications, 2021
Silicon (Si), the most abundant mineral element in the earth’s crust, is taken up by plant roots in the form of silicic acid through Low silicon rice 1 (Lsi1).
Y. Saitoh   +10 more
semanticscholar   +1 more source

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