Giant clams form a symbiosis with photosynthetic algae of the genus Symbiodinium that reside in clam mantle tissue. The allometry of symbiont photosynthetic performance was investigated as a mechanism for the increasing percentage of giant clam carbon respiratory requirements provided by symbionts as clam size increases. Chlorophyll fluorescence measurements of symbionts of the giant clam Trida...

Introduction Light response curves are widely used to quantify phenotypic expression of photosynthesis by measuring a single sample and sequentially altering light intensity within chamber (sequential method) or different samples that each acclimated level (non-sequential method). Both methods often conducted in controlled environments achieve steady-state results, neither method involves equil...

Dunaliella salina and Dunaliella bardawil are well known for carotenogenesis, the overproduction of carotenoids, under stress conditions. The effect of high light (HL) and low light (LL) on the growth, morphology, photosynthetic efficiency, and the β-carotene and zeaxanthin production of D. salina CCAP 19/18 and D. bardawil was investigated and compared. Both strains showed similar growth kinet...

Aspirin, one of the oldest and most widely used anti-inflammatory drugs, has lately been found to lessen incidence cancer. The main pharmacological effects aspirin are thought be generated by its covalent alteration cyclooxygenase-2 (COX-2) via acetylation Ser530. However, exact biochemical mechanism specificity how it works have yet figured out. In modern times, there a lot research done on qu...

BACKGROUND Light emitting diode (LED) fluorescence microscopy (FM) is an affordable, technology targeted for use in resource-limited settings and recommended for widespread roll-out by the World Health Organization (WHO). We sought to compare the operational performance of three LED FM methods compared to light microscopy in a cohort of HIV-positive tuberculosis (TB) suspects at an urban clinic...

The upper thermal tolerance (CT(max)) of beachfleas Orchestia gammarellus (Pallas) collected from a number of different locations in Iceland was determined. Differences were recorded between field populations associated with thermal springs and those from non-thermal sites. A number of reciprocal acclimation experiments (where animals from thermal and non-thermal sites were acclimated to the me...

This study evaluates, for the first time, the influence of biofilms on single and double optical window (SOW and DOW, respectively) fast repetition rate fluorometer (FRRF) measurements of microalgal photosystem-II initial fluorescence (F0), maximum fluorescence (Fm), variable fluorescence (Fv = Fm - F0), quantum yield (Fv/Fm) and functional absorption cross section (σPSII)]. Biofilms with chlor...