there is a growing interest in food industry to replace the synthetic chemicals by the natural products with bioactive properties from plant origin. the aim of this study was to determine the chemical composition of mentha pulegium essential oil and to characterize the antimicrobial activities of the essential oil. the essential oil of mentha pulegium was analyzed by gc-ms. the evaluation of th...

abstract background: premature neonates’ feeding is of great importance due to its effective role in their growth. these neonates should reach an independent oral nutrition stage before being discharged from the neonatal intensive care unit. therefore, the researcher decided to conduct a study on the effect of palady and cup feeding on premature neonates’ weight gain and their reaching full ora...

Objective: Docking studies and synthesis of 4-aryl-5H-chromeno [4,3 -d]pyrimidine-2-amine derivatives to evaluate antimicrobial and in vitro cytotoxicity activity. Methods: Docking studies were performed on Autodock Vina. Computational work was carried out with UCSF Chimera, Argus lab, Marvin beans. Antimicrobial activity was carried out with the agar cup plate method on two gram-positive organ...

Aim: The present study was focused on the screening of the phytochemical, in vitro cytotoxic and antimicrobial activities of various flower extracts [ethanolic (ECG), Ethyl acetate (EACG) and aqueous (ACG)] of Couroupita guianensis Aubl. (Family: Lecythiadaceae). Method: Preliminary phytochemical analysis of extract revealed the presence of alkaloids, flavonoids, carbohydrates, glycosides, ster...

An ideal bone plate for internal fixation of bone fractures should have good biomechanical properties and biocompatibility. In this study, we prepared a new nondegradable bone plate composed of a ternary nano-hydroxyapatite/polyamide 66/glass fiber (n-HA/PA66/GF) composite. A breakage area on the n-HA/PA66/GF plate surface was characterized by scanning electron microscopy. Its mechanical proper...

Twelve bacterial strains isolated from shrimp farming ponds were screened for their growth activity on chitin as the sole carbon source. The highly chitinolytic bacterial strain was detected by qualitative cup plate assay and tentatively identified to be Cohnella sp. A01 based on 16S rDNA sequencing and by matching the key morphological, physiological, and biochemical characteristics. The culti...

BACKGROUND The Asian tiger mosquito, Aedes albopictus (Skuse), transmits important arboviral diseases and displaces native species. This peridomestic mosquito deposits eggs in natural and artificial containers. Container larval habitats tend to be cryptic and, therefore, difficult to reach by conventional insecticide treatments. We have developed an autodissemination station that transfers the ...

We evaluated 2 strategies to manage Aedes albopictus: 1) motorized backpack applications and 2) source reduction (coupled with hand-applied applications of larvicide). Backpack applications used a water-dispersible granular formulation (VectoBac WDG) of Bacillus thuringiensis var. israelensis (Bti), whereas source reduction used granular formulations of the insect growth regulator methoprene (A...

BACKGROUND Aedes aegypti is a primary vector of dengue virus (DENV), the causative agent of dengue fever, an arthropod-borne disease of global importance. Although a vaccine has been recommended for prevention, current dengue prevention strategies rely on vector control. Recently, volatile pyrethroids-spatial repellents-have received interest as a novel delivery system for adult Ae. aegypti con...

Field-collected 4th-instar Glyptotendipes paripes larvae from a natural lake in central Florida preferred small-sized (< 0.84-1.99-mm-diam) grains of sand to burrow in and make cases in the laboratory. The larvae buried or formed cases within 3 h of introduction into 120-ml paper cups containing 80 ml tap water and 20 g of the small-diameter sand. When placed in sand with grains of different si...