scholarly journals Simulation of Powder Behavior Based on Discrete Model Taking Account of Adhesion Force between Particles (First Report)-Two-dimensional Simulations-

2006 ◽  
Vol 53 (7) ◽  
pp. 559-564 ◽  
Author(s):  
Fujio Tsumori ◽  
Keiichiro Hayakawa
Keyword(s):  
Discrete Model ◽  
Adhesion Force ◽  
Two Dimensional ◽  
First Report ◽  
Behavior Based

scholarly journals Two-Dimensional Discrete Model for Buckling of Helical Springs

2019 ◽  
Vol 24 ◽  
pp. 28-39 ◽  
Author(s):  
Francesco De Crescenzo ◽  
Pietro Salvini
Keyword(s):  
Discrete Model ◽  
Two Dimensional ◽  
Helical Springs

scholarly journals SUPERLOOP EQUATIONS AND TWO-DIMENSIONAL SUPERGRAVITY

1992 ◽  
Vol 07 (21) ◽  
pp. 5337-5367 ◽  
Author(s):  
L. ALVAREZ-GAUMÉ ◽  
H. ITOYAMA ◽  
J.L. MAÑES ◽  
A. ZADRA
Keyword(s):  
Partition Function ◽  
Discrete Model ◽  
Continuum Limit ◽  
Basic Assumption ◽  
Scaling Limit ◽  
Integrable Hierarchy ◽  
Two Dimensional ◽  
Virasoro Constraints ◽  
Double Scaling Limit ◽  
The Continuum

We propose a discrete model whose continuum limit reproduces the string susceptibility and the scaling dimensions of (2, 4m) minimal superconformal models coupled to 2D supergravity. The basic assumption in our presentation is a set of super-Virasoro constraints imposed on the partition function. We recover the Neveu-Schwarz and Ramond sectors of the theory, and we are also able to evaluate all planar loop correlation functions in the continuum limit. We find evidence to identify the integrable hierarchy of nonlinear equations describing the double scaling limit as a supersymmetric generalization of KP studied by Rabin.

THE FEASIBLE DOMAINS AND THEIR BIFURCATIONS IN AN EXTENDED LOGISTIC MODEL WITH AN EXTERNAL INTERFERENCE

2007 ◽  
Vol 17 (03) ◽  
pp. 877-889 ◽  
Author(s):  
EN-GUO GU
Keyword(s):  
Discrete Model ◽  
Logistic Model ◽  
Focal Point ◽  
Basins Of Attraction ◽  
Two Dimensional ◽  
External Interference ◽  
Feasible Set ◽  
Coexistence Of Attractors

This paper is devoted to the study of the properties of basins of attraction and the domains of feasible trajectories (discrete trajectories having an ecological sense) generated by a family of two-dimensional map T related to a discrete model of populations generation. The inverse of T has vanishing denominator giving rise to nonclassical singularities: a nondefinition line, a focal point and a prefocal line. Furthermore, the differences and relations between the feasible set, the feasible domains and the basins of attraction are presented. A phenomena of coexistence of attractors is shown. The structure of a chaotic repellor is interpreted by use of the singularities.

Quasisoliton states in a two-dimensional discrete model

1995 ◽  
Vol 52 (21) ◽  
pp. 15273-15278 ◽  
Author(s):  
A. La Magna ◽  
R. Pucci ◽  
G. Piccitto ◽  
F. Siringo
Keyword(s):  
Discrete Model ◽  
Two Dimensional

scholarly journals Determination of the structure of a novel acidic oligosaccharide with blood-group activity isolated from bovine submaxillary-gland mucin

1989 ◽  
Vol 260 (2) ◽  
pp. 389-393 ◽  
Author(s):  
S M D'Arcy ◽  
C M Donoghue ◽  
C A M Koeleman ◽  
D H Van den Eijnden ◽  
A V Savage
Keyword(s):  
Blood Group ◽  
Submaxillary Gland ◽  
Two Dimensional ◽  
Methylation Analysis ◽  
One Dimensional ◽  
First Report ◽  
Novel Structure ◽  
Blood Group H

In this study we investigated the structure of an acidic fucose-containing pentasaccharide released from bovine submaxillary-gland mucin by alkaline-borohydride treatment. The structure, determined by a combination of one-dimensional and two-dimensional 1H-n.m.r. spectroscopy at 270 MHz and methylation analysis involving g.l.c.-m.s., was as follows: Fuc alpha(1-2)Gal beta(1-4)GlcNAc beta(1-3)[NeuAc alpha(2-6)]GalNAcol This pentasaccharide is a novel structure and is the first report of a blood-group-H type 2 determinant on a submaxillary-gland mucin.

scholarly journals CHEMICAL CONSTITUENTS FROM THE LEAVES OF Uvaria boniana Fin. & Gagnep IN VIETNAM

2019 ◽  
Vol 57 (5) ◽  
pp. 538
Author(s):  
Nguyen Thanh Tam ◽  
Nguyen Ngoc Tuan ◽  
Hoang Van Trung ◽  
Le Thi My Chau ◽  
Dinh Thi Trung Anh ◽  
...  
Keyword(s):  
Molecular Modeling ◽  
Secondary Metabolites ◽  
National Park ◽  
Structure Elucidation ◽  
Chemical Constituents ◽  
Two Dimensional ◽  
Phytochemical Study ◽  
First Report

Abstract HCTN_12A phytochemical study of extracts of Uvaria boniana Fin. & Gagnep collected at Vũ Quang National park, Nghe An province leaves led to the isolation of five secondary metabolites, including uvaridacol G (1); 4-methyl-4-[(2Z)-3’-phenylprop-2’-en-1’-yl]cyclohex-2-en-1-one (2); 3,7- dimethoxy quercetin 4’- O- [α-L- rhamnopyranosyl-(12) -β-D- glucopyranoside (3); b-sitosterol (4) and stigmasterol (5). Their structure elucidation were determined on the basis of one and two-dimensional NMR and spectrometric methods in combination with molecular modeling. This is the first report on the chemical constituents of Vietnamese Uvaria boniana.

A New Cucurbitacin Glycoside from Kageneckia oblonga (Rosaceae)

2000 ◽  
Vol 55 (3-4) ◽  
pp. 141-145 ◽  
Author(s):  
Orlando Muñoz ◽  
Carla Delporte ◽  
Nadine Backhouse ◽  
Silvia Erazo ◽  
Rosa Negrete ◽  
...  
Keyword(s):  
Cell Culture ◽  
2D Nmr ◽  
Two Dimensional ◽  
First Report ◽  
Aerial Parts ◽  
Nmr Techniques

Abstract A novel cucurbitacin glycoside has been isolated from aerial parts of Kageneckia oblonga R. et P. and shown to be 3β-(β-D-glucosyloxy)-16α,23α-epoxycucurbita-5,24-dien-11-one. The structure was established by usual spectroscopic and two-dimensional (2D ) NMR techniques. This compound has found to be nontoxic when tested in-vivo cell culture assays. In previous investigations we reported 23,24-dihydrocucurbitacin F and prunasine. This was the first report on cucurbitacins from the genus Kageneckia (Rosaceae).

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