P A College of Engineering

About: P A College of Engineering is a based out in . It is known for research contribution in the topics: Dihedral angle & Ring (chemistry). The organization has 298 authors who have published 594 publications receiving 4888 citations.

(2E)-1-(3-bromo-2-thienyl)-3-(4-methoxy-2,3,6-trimethylphenyl)prop-2-en- 1-one

Abstract: In the title mol­ecule, C17H17BrO2S, the central C=C double bond is trans configured and geometric parameters are in the normal ranges.

A Decomposition of Continuity in Ideal by Using Semi-Local Functions

Abstract: In this paper we introduce and investigate the notion of α-Is-open, semi-Is-open and pre-Is-open sets via idealization by using semi-local functions and we obtained new decomposition of continuity.

FLD-SIFT: Class Based Scale Invariant Feature Transform for Accurate Classification of Faces

Abstract: In this paper, a new model called FLD-SIFT is devised for compact representation and accurate recognition of faces. Unlike scale invariant feature transform model that uses smoothed weighted histogram and massive dimension of feature vectors, in the proposed model, an image patch centered around the keypoint has been considered and linear discriminant analysis (FLD) is employed for compact representation of image patches. Contrasting to PCA-SIFT model that employs principal component analysis (PCA) on a normalized gradient patch, we employ FLD on an image patch exists around the keypoints. The proposed model has better computing performance in terms of recognition time than the basic SIFT model. To establish the superiority of the proposed model, we have experimentally compared the performance of our new algorithm with (2D)2-PCA, (2D)2-FLD and basic SIFT model on the AT&T face database.

3-[(Z)-(4-Diethyl-amino-6-oxocyclo-hexa-2,4-dien-1-yl-idene)methyl-amino]benzoic acid.

Abstract: The title compound, C18H20N2O3, crystallizes as the keto tautomer, unlike the vast majority of similar structures that have been reported that contain the hydr­oxy tautomer There are two strong hydrogen bonds in the crystal structure, both accepted by the same carbonyl group: one intra­molecular N—H⋯O and one inter­molecular O—H⋯O As a result, the carbonyl C=O distance is long, at 1310 (2) A, which may suggest the mol­ecule has a significant zwitterionic character The dihedral angle between the benzene ring planes is 1505 (7)° As a result of the intramolecular hydrogen bond, the bridging C—C=N—C group is almost coplanar with the benzene ring that has the diethylamino substituent [dihedral angle 235 (15)°]

2,3‐Dibromo‐3‐(5‐bromo‐2‐methoxyphenyl)‐1‐(2,4‐dichlorophenyl)propan‐1‐one

Abstract: In the title mol­ecule, C16H11Br3Cl2O2, the chain Br atoms are in trans positions [Br—C—C—Br torsion angle is 179.0 (2)°]. The two benzene rings make a dihedral angle of 39.54 (15)°. The crystal packing is determined by van der Waals forces; some weak π–π inter­actions between the benzene rings of neighbouring mol­ecules are also possible [the distance between their centroids is 3.753 (5) A]. Intermolecular C—H⋯Br interactions are also present.