Absorbance

Water temperature increases as the turbidity increase. This is caused by the absorbance of heat by the suspended particles within the water body. This reduces the concentration of dissolved oxygen (DO) in the water since warm water holds less DO compared to cold water. Higher turbidity also reduces the amount of light that can penetrate…

Cigarettes should be illegal in public places in the United States to help optimize America's standard of health. Secondhand smoke is a serious health hazard, non-smokers being exposed to secondhand smoke regularly will ultimately result in the absorbance of harmful chemicals. Smoking patients who are ill may and are being turned down by doctors because of their inability to eliminate the elective problem. Banning cigarettes in public should be the ideal conception to businesses in order to…

The Marvels of Spain‒and America “The Marvels of Spain—and America” portion of “Beginnings to 1700” by Wayne Franklin portrays various point of views between the Old and New World. The Natives experienced “a colonial imitation of Europe developing before their eyes, complete with fortresses, horses... and much else that… could have only been found in Europe” while the settlers from Spain saw the land as opportune as they established slavery, tools, textiles, churches, and new foods as a…

All measurements were carried out at room temperature with a 1.0 cm × 1.0 cm quartz glass cuvette. Prior to measurements, each sample was diluted accordingly such that absorbance fall within linear range of the calibration curve (R2 = 0.9999). All the data presented represent the mean of, at least, three determinations. 3.5 High Performance Liquid Chromatography Monitoring of stability of L-NNA was performed using HPLC…

cell death. The IC 50 assay is used to determine the potency of the drugs which used as treatment of cancers (1). In the previous experiments, 20,000 cells/mL was the optimal number of leukemia cells, which was the concentration of cells given the absorbance values between 0.75 and 1.25 in MTT assay. Moreover, compounds were tested for their possible effect on the reduction of the proliferation of leukemia cells. Compound 3, 5, 8 and…

INTRODUCTION Thermoregulation is a complicated process requiring the sensing of surroundings condition and processing of that information so that animals can regulate their core temperature based on the change in environmental temperature (Seebacher & Franklin, 2005) to carry out metabolism and allow the functions of biologically sensitive enzymes and cells. Thus, allowing animals to survive in different environments including some extreme ones i.e. desert. Ectotherms such as lizards which have…

of the carvone-hexane solution were added to the hexane using a micro pipette. This solution was moved into the crystal container for UV spectroscopy. The UV spectra was taken from 200 to 400 nm and the concentration of the sample was 2.0E-4. The absorbance was recorded at 232 nm and 273 nm. Results The carvone product was weighed to be 1.88 g and appeared to be a mostly clear liquid. The starting mass of spearmint oil was 2.81 g and the percent recovery for the carvone product was 66.9%.…

capacity (TAC) level evaluation can be classified into a direct method and indirect method. Indirect method or in vitro method consists of DPPH radical scavenging activity assay, Trolox equivalent antioxidant capacity (TEAC) and oxygen radical absorbance capacity (ORAC) while direct method or in vivo method usually using ferric ion reducing antioxidant power (FRAP) assay. The most common assay has been used for antioxidant analysis is by using DPPH radical scavenging activity assay. This…

The marvelous laboratory manner to study bacterial infection by cytotoxicity assay Bacteria are one of the most diverse living organisms, which enable adapted to a great variety of environments including the human body(1). As we know, the Scientists are classified the bacteria to two classes: non- pathogenic bacteria or commensal organisms and pathogenic bacteria. Researchers are predominantly shed light on pathogenic bacteria due to these bacteria use a number of different virulence…

using an emulsion liquid membrane technique. Figure(10). The best concentration of Cd(II) ion factor at 4.56 but separation factor of Ni(II) ion at pH= 1.85. After infiltrating emulsion liquid membrane and the stripping phase determine by Atomic Absorbance Spectroscopy (AAS). It was obtained separation factor of…