in this note we consider the notion of intuitionistic fuzzy (weak) dual hyper k-ideals and obtain related results. then we classify this notion according to level sets. after that we determine the relationships between intuitionistic fuzzy (weak) dual hyper k-ideals and intuitionistic fuzzy (weak) hyper k-ideals. finally, we define the notion of the product of two intuitionistic fuzzy (weak) du...

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In recent years, the field of dual photocatalysis has become an increasingly popular tool for functionalization organic substrates under mild operative conditions. Single-atom heterogeneous catalysts (SACs), where metal atoms are stabilized by means properly structured photoactive supports, currently one frontiers this research field. To end, Carbon Nitrides (CNs) have emerged as ideal two-dime...

Dinuclear gold complexes have the ability to interact with one or more substrates in a dual-activation mode, leading to different reactivity and selectivity than their mononuclear relatives. In this contribution, this difference was used to control the catalytic properties of a gold-based catalytic system by site-isolation of mononuclear gold complexes by selective encapsulation. The typical du...

Single and Dual feed Antennas with dual frequencies have been demonstrated. Varactor diodes are used for independent tuning. The PIFA (Planar Inverted F-Antenna) has two frequencies from 0.7 to 1.1 GHz and from 1.7 to 2.3GHz. Impedance match of about -10dB an isolation greater than 13dB is obtained. The single feed antenna can be tuned from 1.2 to 1.6GHz and 1.6 to 2.3 GHz. The antenna volumes ...

A Dual band reconfigurable microstrip antenna with frequency diversity for satellite communication is proposed. In this paper a reconfigurable antenna with stacked structure is used. The two patches are arranged by two substrates i.e.. one R04003 dielectric substrate and another Rohacell Foam substrate with the dielectric constant 1.04 and loss tangent 0.0027. By varying the height of foam subs...

Copper-catalyzed asymmetric allylation of chiral N-tert-butanesulfinyl imines has been described. Dual stereocontrol, through the combination of a chiral auxiliary and a chiral copper complex, has played an important role in achieving the nearly perfect diastereoselectivities (all dr > 99 : 1), especially for ketimine substrates.

Triethylamine (Et3N) mediates esterification reactions between the title reagent (1) and carboxylic acids. Alcohols, phenols, amides, and other sensitive functionality are not affected; a dual role for Et3N as a promoter and a scavenger is postulated. Benzyl esters are obtained from substrates including amino acid and sugar derivatives.

The dual activation of simple substrates by the combination of organocatalysis and palladium catalysis has been successfully applied in a variety of different asymmetric transformations. Thus, the asymmetric a-allylation of carbonyl compounds, a-fluorination of acyl derivatives, decarboxylative protonation of β-dicarbonyl compounds, cyclization reactions of alkynyl carbonyl compounds and β-func...

The design of an unequal-length 3-dB hybrid branchline coupler with center-tapped open stubs on series arms is described. The design has been implemented for GSM (900 MHz) and ISM (2.45 GHz) dual-band operation. Simulation results have been verified against experimental results. The agreement between the two sets of results is found to be quite satisfactory. The size reduction, compared to the ...