A Novel High Quality High Capacity Image Hiding Scheme Based on Image Compression and an Optical Pixel Adjustment Process Lo'ai A. Tawalbeh a , Omar Banimelhem b & Mohammed Al-Batati b a Department of Computer Engineering, Jordan University of Science and Technology (JUST), Irbid, Jordan b Department of Network Engineering and Security, Jordan University of Science and Technology (JUST), Irbid,...

A commutative loop is Jordan if it satisfies the identity x2(yx) = (x2y)x. Using an amalgam construction and its generalizations, we prove that a nonassociative Jordan loop of order n exists if and only if n ≥ 6 and n 6= 9. We also consider whether powers of elements in Jordan loops are well-defined, and we construct an infinite family of finite simple nonassociative Jordan loops.

This is the first survey of bryophyte diversity in mangroves Panama. The study was done Bocas del Toro Province, Panama, September 2016 and, July, May and August 2017. Bryophytes were collected from prop or stilt roots mangroves, mid-lower part trunks lower branches. In areas inundated at high tide, additional samples on cortex palms, its rootlets, other angiosperm trees decomposing logs. Twent...

background: the control of spread of hiv takes concerted efforts at both national and international levels. education is an important component of preventing the spread of hiv. this study aimed to assess the attitudes of parents, teachers and students towards informing children about hiv/aids, attitudes concerning 'proper' age to learn about hiv/aids, possible differences in attitudes relating ...

Anopheles malefactor Dyar and Knab is elevated from synonymy with An. punctimacula Dyar and Knab, and both species are described and illustrated. Primary morphological differences in the adult, pupal, and larval stages are provided for the separation and recognition of these species. An. punctimacula occurs from Mexico to northern Colombia and Venezuela, whereas An. malefactor is restricted to ...

New distribution records of 22 braconid species belonging to Agathidinae, Braconinae, Helconinae, Homolobinae and Rogadinae subfamilies from Brazil, Chile, Costa Rica, Guatemala, Mexico and Panama are presented. Agathirsia ninesevenci Pucci & Sharkey is reported for the first time from Mexico; Homolobus acares van Achterberg, H. antefurcalis van Achterberg and H.infumator (Lyle) from Costa Rica...

The new genus Ampliphax, assigned to the Delphacini, is described and illustrated with a single new species A. grandis from Costa Rica and Panama. Ampliphax grandis is a large species with a projected head. DNA barcode data suggest, among currently barcoded taxa, an affinity to the genus Bostaera. A checklist of the delphacid species from Costa Rica, Panama, and Nicaragua based on literature an...

Quillaia extracts (synonyms: quillaja extracts, bois de Panama, Panama bark extracts, quillai extracts, Quillay bark extracts, soapbark extracts; C.A.S. no. 68990-67-0, INS no. 999) are obtained by aqueous extraction of the milled inner bark or whole wood of Quillaja saponaria Molina (family Rosaceae), which is a large evergreen with shiny, leathery leaves and a thick bark, native to China and ...