N′-[(1E,2E)-1-(2-Phenyl­hydrazin-1-yl­idene)-1-(phenyl­sulfon­yl)propan-2-yl­idene]benzohydrazide

The configuration about each C=N bond in the title compound, C22H20N4O3S, is E. While to a first approximation the phenyl­hydrazin-1-yl­idene and benzohydrazide residues are coplanar, in part due to the presence of an intra­molecular N—H⋯N hydrogen bond, significant twists are evident in the orientations of the hydrazine [N—N—C—C torsion angle = −170.74 (11)°] and benzoyl benzene [N—C—C—C = −21.72 (18)°] rings. The sulfonyl benzene ring occupies a position almost normal to the rest of the mol­ecule [C—S—C—N = −92.28 (10)°]. Centrosymmetric aggregates mediated by pairs of hydrazide–sulfonyl N—H⋯O hydrogen bonds are the predominant packing motif in the crystal. These are connected into linear supra­molecular chains via C—H⋯O inter­actions which are, in turn, linked into layers in the ac plane via C—H⋯π inter­actions. Connections between layers along the b-axis direction are of the π–π type and occur between centrosymmetrically related hydrazine-bound benzene rings [centroid–centroid separation = 3.7425 (9) Å]

1-(4-Bromo­phen­yl)-2-(phenyl­sulfon­yl)ethanone

The overall conformation of the title mol­ecule, C14H11BrO3S, is L-shaped, as seen in the value of the dihedral angle formed between the terminal benzene rings of 75.44 (13)°. The presence of C—H⋯O inter­actions leads to the formation of linear supra­molecular chains along the a-axis direction in the crystal structure. These are connected into supra­molecular arrays in the ab plane via C—H⋯π contacts

2-(6-Phenyl-7H-1,2,4-triazolo[3,4-b][1,3,4]thia­diazin-3-yl)-1,3-benzothia­zole

In the title compound, C17H11N5S2, the dihedral angles formed between the triazole ring and the benzene ring and the 1,3-benzothia­zole ring system are 8.67 (8) and 13.90 (9)°, respectively. The conformation of the triazolo-thia­diazin-3-yl fused ring system is a twisted half-chair. Overall, the mol­ecule adopts a flattened shape. Supra­molecular helical chains along the a axis sustained by C—H⋯N inter­actions are found in the crystal structure. These are linked via C—H⋯π contacts as well as π–π [centroid–centroid distance = 3.5911 (12) Å] inter­actions between the triazole and thia­zole rings

Ethyl 1-(4-methyl­phen­yl)-5-phenyl-4-phenyl­sulfon­yl-1H-pyrazole-3-carboxyl­ate

The title compound, C25H22N2O4S, features a tetra-substituted pyrazole ring. The dihedral angles formed between the five-membered ring (r.m.s. deviation = 0.007 Å) and the N- and C-bound phenyl rings are 48.10 (7) and 72.01 (7) °, respectively, indicating that the planes through the residues are significantly twisted from the plane through the heterocycle. The ester-CO2 group is also twisted out of this plane, with an O—C—C—N torsion angle of −29.04 (11)°. The sulfonyl-O atoms lie to one side of the pyrazole plane and the sulfonyl­phenyl ring to the other. The dihedral angle between the two ring planes is 70.63 (7) °. Supra­molecular arrays are formed in the crystal structure sustained by C—H⋯O and C—H⋯π(pyrazole) inter­actions and methyl-C—H⋯π(N-bound benzene) contacts

Bacteriological and Molecular Identification of Thermophilic Campylobacters of Animal and Human Origins in Beni-Suef Governorate, Egypt

Thermophilic species of the genus Campylobacter are generally considered commensals of livestock and the leading cause of bacterial food-borne zoonoses. The present study was delineated to clarify the role of Campylobacter species as a diarrheagenic pathogen in animals and man and to investigate the fecal carriage rate of Campylobacters in animals and in-contact humans. A total number of 78 fecal samples were collected from diarrheic and non-diarrheic cattle (n=26), sheep (n=28) and humans (n=24). Samples were enriched in Preston broth, followed by streaking on selective Campylobacter agar base medium. The suspected colonies were tested morphologically and biochemically. Campylobacter spp. was recovered from 29 (37.17%) out of 78 fecal samples (34.61%, 42.85% and 33.33%) for cattle, sheep and humans, respectively. Positive correlation between the occurrence of diarrhea and the isolation of Campylobacters was observed in samples of human origin while in adult ruminants particularly sheep, high fecal carriage rate was observed in non-diarrheic animals. The isolates were identified to genus and species levels by polymerase chain reaction targeting the 16S rRNA gene, the mapA gene and the ceuE gene which revealed that all of isolates were Campylobacter jejuni. These findings pose a significant epidemiological implication where cattle and sheep act as vehicles of, and excrete Campylobacter jejuni which is capable of causing disease in the local community in the area of investigation

The Impact of Corporate Governance on Agency Costs in Jordanian Service Companies

The objective of this study investigates the impact of corporate governance (CG) on agency costs (AC) in Jordanian service companies. The analysis is conducted using the random-effects model on a sample of (42) service companies listed in the Amman Stock Exchange, during the period (2012-2018). Independent variables are used (Board Size, CEO Duality, Audit Committee, Managerial Compensation, Dividend, & Leverage). AC are measured by Asset Turnover Ratio (AT), Selling, General & Administrative Expense Ratio (SG&A) & Free Cash Flow (FCF). This study also includes three control variables: firm size, firm growth & firm profitability. The results of this study, according to the AT index, leverage increases AC through decreasing AT ratio, and this indicates that management uses the borrowed funds in an ineffective manner. The results, according to the SG&A index, are that AC caused by squandering the companies resources on managerial privileges and discretionary expenses are low in large companies and in companies that have high profits. While the results, according to the FCF index, are that the separating of the positions of chairman of the board and CEO & dividend decrease AC through decreasing FCF available under management control, and we find AC caused by possible misuse of FCF are more existing in large companies and in companies that have high profits. This study recommends the Jordanian service companies pay a dividend to shareholders and recommends the Jordanian legislative bodies oblige companies to apply some CG mechanisms, instead of compliance or explain approach. An example includes separating the positions of chairman of the board and CEO for their effective role in reducing AC through reducing FCF available under management control

2-(1H-1,3-Benzodiazol-2-ylsulfan­yl)-1-(4-chloro­phen­yl)ethanone

The mol­ecule in the structure of the title compound, C15H11ClN2OS, displays two planar residues [r.m.s. deviation = 0.014 Å for the benzimidazole residue, and the ketone group is co-planar with the benzene ring to which it is attached forming a O—C—C—C torsion angle of −173.18 (14) °] linked at the S atom. The overall shape is based on a twisted V, the dihedral angle formed between the two planes being 82.4 (2) °. The amine-H atom is bifurcated, forming N—H⋯O and N—H⋯S hydrogen bonds leading to dimeric aggregates. These are linked into a supra­molecular chain along the c axis via C—H⋯π hydrogen bonds. Chains form layers in the ab plane being connected along the c axis via weak π–π inter­actions [3.9578 (8) Å] formed between centrosymmetrically related chloro-substituted benzene rings

1-[(Z)-2-Phenyl­hydrazin-1-yl­idene]-1-(piperidin-1-yl)propan-2-one

A Z configuration about the imine bond [1.3025 (18) Å] in the title compound, C14H19N3O, allows for the formation of an intra­moleclar N—H⋯N hydrogen bond between the hydrazone H and piperidine N atoms; the carbonyl group is disposed to lie over the piperidine residue, which is in a chair form. A twist between the terminal benzene ring and the hydrazine residue is seen [N—N—C—C torsion angle = 163.81 (12)°]. Helical supra­molecular chains along the c axis mediated by N—H⋯O hydrogen bonds are the most prominent feature of the crystal packing. The chains are connected into layers lying in the ac plane by weak C—H⋯π contacts involving two methyl­ene H atoms and an adjacent benzene ring