نتایج جستجو برای: optical density
تعداد نتایج: 658578 فیلتر نتایج به سال:
Evaluation of Human Serological Response to Recombinant TB10.4 Antigen of Mycobacterium tuberculosis
Introduction: Development of effective immunodiagnostic methods for detection of Mycobacterium tuberculosis infection is crucial. Serodiagnostic methods, based on antibody response to specific antigens could provide promising approaches for rapid, economical and easy to perform diagnostic tests which are crucial for tuberculosis (TB) control. In this study, the level of IgG antibody responses...
In this research, the electronic and optical properties of the (001) surface of SbNSr3 with SbSr and NSr2 terminations and surface passivation impact on electronic properties were investigated. The calculations were done within density functional theory and using pseudo-potential method. HSE hybrid functional was used for exchange correlation potential. The surface calculations were performed t...
for the evaluation of autoantibodies in pemphigus vulgaris (pv), an indirect elisa assay was developed by using a semi-purified human epidermal skin extracted with approximately a molecular weight (m.w.) of 130-160 kda. the evaluation of pemphigus igg, igm and iga autoantibodies in 75 patients and 50 control sera indicated that this indirect elisa assay was a useful method for the detection of ...
while the application of optical and photonic technologies in the communications, computing, medicine and industrial manufacturing has been growing rapidly, the miniaturization of these technologies has been slow due to the limitation on the diffraction. however, the developments of nanoscale components and guiding methods are continuing with a rapid pace. since waveguiding is a fundamental iss...
At 30 minutes after intravenous administration of the glomerular renal agent TC-99m-DTPA, both right and left lateral views were obtained. We analyzed the ratio of optical densities (behind the ureter/In front of the ureter). In patients without gross renal failure or retroperitoneal disease, the ratio was always less than 1 (range 0.38 to 0.95, mean 0.68). This represents greater perfusi...
ing the full potential linearized augmented plan wave in framework density functional theory(DFT) with wien2k code. The band structure and energy gap of the bulk structures are calculated with GGA-PBE, GGA+U and GGA+MBJ approximations, and results obtained from the MBJ function are more consistent with the reported experimental results. The optical properties such as real and imaginary parts...
When Wavelengths Collide: Bias in Cell Abundance Measurements Due to Expressed Fluorescent Proteins.
The abundance of bacteria in liquid culture is commonly inferred by measuring optical density at 600 nm. Red fluorescent proteins (RFPs) can strongly absorb light at 600 nm. Increasing RFP expression can falsely inflate apparent cell density and lead to underestimations of mean per-cell fluorescence by up to 10%. Measuring optical density at 700 nm would allow estimation of cell abundance unaff...
Reflection densitometry has been widely used to measure the density difference of the bleachable cone photopigments in human eyes. Most such measurements make a series of assumptions concerning the amount of scattered light to derive an estimate of the true cone photopigment density from the density difference measurements. The current study made three types of measurements of the light returni...
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