The dynamic configuration of reduced graphene oxide (rGO) in an aqueous dispersion is revealed by several characterization methods, showing a spontaneous and seemingly irreversible configuration transition from flat to highly corrugated sheets over time. Such dynamic behaviour of rGO leads to a tailored porous structure of graphene-based thin films. This affects their permeation and electrochem...

In the title compound, C21H19ClN2O2, the benzene ring and the naphthalene ring system are oriented at a dihedral angle of 65.24 (10)°. In the crystal, N-H⋯O, C-H⋯N and C-H⋯O hydrogen bonds link the mol-ecules, forming chains along the b-axis direction. Further C-H⋯O hydrogen bonds link the chains, forming corrugated sheets lying parallel to (10-1).

The complete mol-ecule of the title compound, C(17)H(22)N(2)O(4)S(2), is generated by crystallographic twofold symmetry, with one C atom lying on the rotation axis. The dihedral angle between the benzene rings is 44.04 (7)° and the conformation of the central N-C-C-C group is gauche. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds, generating corrugated (010) sheets, and weak C-H⋯...

The complete mol-ecule of the title compound, C24H28N4O4, is generated by crystallographic inversion symmetry. The ethyl side chain is disordered over two sets of sites in a 0.57 (4):0.43 (4) ratio. The dihedral angles between the methyl-idene group and the phenyl ring and ester side chain (major conformation) are 7.61 (8) and 86.95 (8)°, respectively. In the crystal, mol-ecules are linked via ...

In the title mol-ecule, C(7)H(6)ClNO(2), the plane of the nitro group and the direction of the chloro-methyl group are twisted away from the benzene ring, forming dihedral angles of 8.2 (3) and 67.55 (12)°, respectively. In the crystal structure, weak inter-molecular C-H⋯O inter-actions link the mol-ecules into corrugated sheets parallel to the bc plane.

In the title compound, C(5)H(4)BrNO(2), the non-H atoms of the pyrrole ring and the Br atom are approximately coplanar, with an r.m.s. deviation from the best fit plane of 0.025 (6) Å;. The dihedral angle between the plane of the carb-oxy group and this plane is 14.1 (2)°. In the crystal, O-H⋯O hydrogen bonds link the mol-ecules together, forming corrugated sheets parallel to the bc plane.

Sinusoidal corrugated steel web has gradually gained attention over trapezoidal web. The design of shear buckling capacity for the is governed by interactive which normally lowest value among global, local and failures. It was discovered in some studies that a sinusoidal section found to be either or global failures, where there lack study this area. purpose determine effect thickness, height, ...

Timely and extensive space spraying has been widely used to prevent the spread of dengue fever/dengue hemorrhagic fever (DF/DHF). Field evaluations on its effectiveness have been rarely reported. This study aimed to evaluate the timeliness, coverage, and effectiveness of space spraying for DF/DHF control using a geographic information system (GIS). Longitudinal monitoring of DF/DHF cases and sp...