Results 41 to 50 of about 73,566 (229)

Circular 32 [PDF]

open access: yes, 1979
Management objectives of some revegetation plantings encourage the use of native species. Where reinstatement of a native flora is desired, the inclusion of suitable native materials can hasten the process.
Mitchell, Wm. W.
core  

MXene‐Coated 3D Printed Horn Antennas for Ku Frequency Band

open access: yesAdvanced Materials Technologies, EarlyView.
An additive manufacturing approach to 3D printing horn antennas and coating them with Ti3C2Tx MXene is proposed. Rapid fabrication of lightweight, high‐performance antennas operating in the Ku‐band (12.4–18 GHz) has been demonstrated. The MXene‐coated antennas exhibit comparable electromagnetic performance to conventional, costly aluminum ones, with ...
Zahra Sarpanah Sourkouhi   +3 more
wiley   +1 more source

4,4´-[4,4´-(Perfluoropropane-2,2-diyl)-bis(4,1-phenyleneoxy)]dianiline [PDF]

open access: yes, 2009
In the title compound, C27H20F6N2O2, the dihedral angles between the planes of the aromatic rings connected by the ether O atoms are 84.13 (8) and 75.06 (9)°. The crystal structure is stabilized by N-H...O and N-H...F hydrogen bonds.
Nawaz, Haq   +3 more
core   +2 more sources

Bidirectional Photoswitching of a Tailored Azobenzene with Red and Far‐Red Light Involving Triplet Sensitization in an Aqueous System

open access: yesAdvanced Science, EarlyView.
The action spectrum of a tailored azobenzene is shifted toward bio‐optical window through the chemical modification of its singlet and triplet energy levels. Consequently, the bidirectional photo‐switching of azobenzene in physiological conditions is achieved when excited by red and far‐red light, which offers greater tissue penetration.
Mila Miroshnichenko   +11 more
wiley   +1 more source

Impact of refugee population on development: A comparative analysis for the case of host economies

open access: yesReview of Economic Perspectives, 2018
This study was carried out to investigate the relationship between refugees and development in host economies from a macroeconomic point of view. The results obtained show that this relationship is non-linear.
Kouni Mohamed
doaj   +1 more source

A replication of “A quasi-maximum likelihood approach for large, approximate dynamic factor models” (Review of Economics and Statistics, 2012)

open access: yesEconomics: Journal Articles, 2020
The authors replicate and extend the Monte Carlo experiment presented in Doz, Giannone and Reichlin (A Quasi-Maximum Likelihood Approach For Large, Approximate Dynamic Factor Models, Review of Economics and Statistics, 2012) on alternative (time-domain ...
Lucchetti Riccardo, Venetis Ioannis A.
doaj   +1 more source

World capital markets facing the first wave of COVID-19: Traditional event study versus sensitivity to new cases

open access: yesEconomics and Business Review, 2022
The aim of the paper is to analyse the impact of the new coronavirus on financial markets. The sample comprises returns from 80 countries, across all regions and incomes for the period known as the first wave.
Angosto-Fernández Pedro Luis   +1 more
doaj   +1 more source

Glycyl-L-proline hemihydrate at 298 K [PDF]

open access: yes, 2006
The crystal structure of glycyl-L-proline (GLY-PRO) hemihydrate, C(7)H(12)N(2)O(3)(.)0.5H(2)O, has two molecules of GLY-PRO in the asymmetric unit; one molecule adopts the cis configuration at the peptide bond and the other adopts the trans configuration.
Moggach, S A, Parsons, S, Sawyer, L
core   +1 more source

A Fast Method for Selecting Bio Sourced Materials of Interest in a Candle Formulation

open access: yesJournal of the American Oil Chemists' Society, EarlyView.
ABSTRACT As consumer demand shifts towards more sustainable and nontoxic alternatives, the candle industry is exploring unconventional bio‐based and recycled materials as substitutes for paraffin. Four raw materials, that is rice bran wax (RBW), sugarcane wax (SCW), hydrogenated rapeseed oil (HRO), and waste cooking oil (WCO) were assessed based on ...
Salma Daoufa   +4 more
wiley   +1 more source

Examining the Volatility of Oil Revenue and its Impact on Algeria’s Macroeconomic Stability

open access: yesFolia Oeconomica Stetinensia
Algeria heavily relies on its oil revenues, being one of the leading crude oil producers in Africa and a key member of OPEC. This dependency exposes its economy to the volatility of oil prices in international markets, which can have significant ...
Bouyacoub Brahim
doaj   +1 more source

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