Using the sterile insect technique,in which sterile mosquitoes are released to reduce or eradicate the wild mosquito population,is an effective weapon to prevent transmission of mosquito-borne diseases. To study the impact of the sterile insect technique on the disease transmissions,we formulate stage-structured discrete-time mathematical models,based on difference equations,for the interactive...

266 eyes were examined by the slit lamp 24 hours after uncomplicated intracapsular cataract extraction. An unexpectedly high incidence of 15% macroscopic hypopyons was found with a further 13% showing a trace. Possible aetiological irritative factors were investigated by individual exclusion, but did not materially alter the incidence. All the hypopyons spontaneously and rapidly regressed witho...

BACKGROUND Many patients cannot afford sterile dressings. In St John, New Brunswick, clean dressings have been used instead of sterile dressings for years, with no apparent ill effects. No previous studies have compared the sterility and cost of clean versus sterile dressing materials. OBJECTIVES THE GOALS OF THE PRESENT STUDY WERE TO ANSWER THE FOLLOWING QUESTIONS: how much more sterile are ...

Light sterile neutrinos might mix with the active ones and be copiously produced in the early Universe. In the present paper, a detailed multi-flavor analysis of sterile neutrino production is performed. Making some justified approximations allows us to consider not only neutrino interactions with the primeval medium and neutrino coherence breaking effects, but also oscillation effects arising ...

The biodegradability ofN, N Octadecyldimethylamine, a long-chained aliphatic amine, was studied in a biotreatability system. The study serves as a precursor to the application ofcompost biofiltration to treat odorous waste gases containing long-chained alkyl amines (e.g., emitted by spray-painting operations). The biodegradability ofthe amine was determined by evaluating contaminant removal and...

The mechanism of floral organ specification is principally conserved in angiosperms, as demonstrated by the ABC model. By contrast, mechanisms that regulate the development of organs or structures specific to a group of species remain unclear. Grasses have unique inflorescence units, comprising spikelets and florets. In the genus Oryza (rice), the single spikelet consists of a fertile floret su...

The sterile insect technique may be implemented to control populations of the oriental fruit fly, Bactrocera dorsalis (Hendel) (Diptera: Tephritidae), when environmental concerns preclude widespread use of chemical attractants or toxicants. The goal of the present study was to evaluate whether the mating competitiveness of sterile B. dorsalis males could be increased via pre-release feeding on ...