Solvent-induced two Cu(II) complexes with 4-acyl pyrazolone derivative: From discrete structure to 1D helical chain

2014 ◽  
Vol 45 ◽  
pp. 36-39 ◽  
Author(s):  
Li-Jun Yi ◽  
Guan-Cheng Xu ◽  
Li Zhang ◽  
Dian-Zeng Jia
Keyword(s):  
Helical Chain ◽  
Discrete Structure ◽  
Pyrazolone Derivative

Homochiral 1D Helical Chain Based on an Achiral Cu(II) Complex

2012 ◽  
Vol 51 (14) ◽  
pp. 7502-7507 ◽  
Author(s):  
Chihiro Kachi-Terajima ◽  
Megumi Ishii ◽  
Toshiaki Saito ◽  
Chikahide Kanadani ◽  
Takunori Harada ◽  
...  
Keyword(s):  
Helical Chain

Phonological potentials and the lower vocal tract

2019 ◽  
pp. 1-35 ◽  
Author(s):  
Scott R. Moisik ◽  
Ewa Czaykowska-Higgins ◽  
John H. Esling
Keyword(s):  
Theoretical Approach ◽  
Vocal Tract ◽  
Speech Sound ◽  
Physical Nature ◽  
Discrete Structure ◽  
Complex Interactions

This paper outlines a theoretical approach to speech sound systems based on the notion of phonological potentials: physical ‘pressures’ or biases that give rise to discrete structure and the tendencies associated with this structure that arise from the physical nature of speech sound systems. We apply this approach to a poorly understood area of phonology – phenomena of the lower vocal tract (LVT) – through a schematic that encapsulates the complex interactions among the vocal tract structures responsible for producing LVT sounds. With the framework, we provide an account of a range of LVT phenomena from several languages, illustrating how tonal, phonatory, and vowel qualities interact. Finally, we consider how the idea of phonological potentials extends across various physical domains and might exhibit patterns of alignment across these domains, thereby serving to guide the formation of patterns found in speech sound systems.

Helical chain Ag(I) complexes with a tridentate N-donor ligand: syntheses, structural characterization, and properties

2015 ◽  
Vol 70 (12) ◽  
pp. 851-856 ◽  
Author(s):  
Chun-Hua Dai ◽  
Fu-Lin Mao
Keyword(s):  
Ir Spectroscopy ◽  
Single Crystal ◽  
Structural Characterization ◽  
Fluorescence Properties ◽  
Helical Chain ◽  
Donor Ligand ◽  
Thermogravimetric Analyses ◽  
X Ray

AbstractThe tridentate N-donor ligand 2,6-di(2-oxazolyl)pyridine (L) reacts with AgClO4 and AgPF6 to yield two new complexes, {[Ag5(L)5](ClO4)5}n (1) and {[Ag5(L)5](PF6)5}n (2), which have been characterized by single-crystal and powder X-ray diffractions, IR spectroscopy, and elemental and thermogravimetric analyses. Complexes 1 and 2 are isotypic, displaying helical chain structures. The fluorescence properties of 1 and 2 were investigated.

Potential barrier effect and discrete structure o between 40 and 120 Å in the Rb I absorption spectrum

1975 ◽  
Vol 344 (1637) ◽  
pp. 303-309 ◽  
Keyword(s):  
Absorption Spectrum ◽  
Absorption Maximum ◽  
Random Phase Approximation ◽  
Random Phase ◽  
Particle Model ◽  
Discrete Structure ◽  
Model Calculations ◽  
Hartree Fock ◽  
Independent Particle ◽  
Independent Particle Model

Investigation of the Rb I absorption spectrum between 40 and 120 Å has revealed a broad absorption maximum in the 3d photoionization continuum, as well as discrete features associated with the excitation of a 3d-subshell electron. The discrete structure is identified, Hartree-Fock calculations of the transition energies are given and the absorption maximum is discussed in relation to similar spectra and to recent random phase approximation with exchange (r.p.a.e.) and independent particle model calculations.

Helical chain observed under transmission electron microscope: Synthesis and structure refinement of lutetium disilicate Lu2Si2O7

CrystEngComm ◽  
2010 ◽  
Vol 12 (5) ◽  
pp. 1617 ◽  
Author(s):  
Chao Wang ◽  
Xiaoyang Liu ◽  
M. E. Fleet ◽  
Jixue Li ◽  
Shouhua Feng ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Transmission Electron Microscope ◽  
Structure Refinement ◽  
Helical Chain ◽  
Transmission Electron

Structural diversity and properties of four complexes with 4-acyl pyrazolone derivative

Polyhedron ◽  
2013 ◽  
Vol 55 ◽  
pp. 209-215 ◽  
Author(s):  
He Li ◽  
Guan-Cheng Xu ◽  
Li Zhang ◽  
Ji-Xi Guo ◽  
Dian-Zeng Jia
Keyword(s):  
Structural Diversity ◽  
Pyrazolone Derivative

Efficient terbium complex based on a novel pyrazolone derivative ligand used in solution-processed OLEDs

2019 ◽  
Vol 208 ◽  
pp. 57-62 ◽  
Author(s):  
Edivandro Girotto ◽  
Alessandra Pereira ◽  
Caroline Arantes ◽  
Marco Cremona ◽  
Adailton J. Bortoluzzi ◽  
...  
Keyword(s):  
Terbium Complex ◽  
Solution Processed ◽  
Pyrazolone Derivative

scholarly journals Trivial geometric heuristic for subset sum problem

2017 ◽  
Author(s):  
R U
Keyword(s):  
Greedy Algorithm ◽  
Dimensional Space ◽  
Approximate Solutions ◽  
Exact Algorithms ◽  
Approximation Schemes ◽  
Brute Force ◽  
Discrete Structure ◽  
Subset Sum Problem ◽  
Subset Sum ◽  
Hyper Plane

All exact algorithms for solving subset sum problem (SUBSET\_SUM) are exponential (brute force, branch and bound search, dynamic programming which is pseudo-polynomial). To find the approximate solutions both a classical greedy algorithm and its improved variety, and different approximation schemes are used.This paper is an attempt to build another greedy algorithm by transferring representation of analytic geometry to such an object of discrete structure as a set. Set of size $n$ is identified with $n$-dimensional space with Euclidean metric, the subset-sum is identified with (hyper)plane.

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