For kinetic studies of protein nitration reactions, we have developed a method for the quantification of nitrotyrosine residues in protein molecules by liquid chromatography coupled to a diode array detector of ultraviolet-visible absorption. Nitrated bovine serum albumin (BSA) and nitrated ovalbumin (OVA) were synthesized and used as standards for the determination of the protein nitration deg...

The Climate Research Facility of the US Department of Energy’s Atmospheric Radiation Measurement (ARM) Program operates a network of ground-based microwave radiometers. Data and retrievals from these instruments have been available to the scientific community for almost 20 yr. In the past five years the network has expanded to include a total of 22 microwave radiometers deployed in various loca...

New diode structures without the field-oxide boundary across the p/n junction for ESD protection are proposed. A NMOS (PMOS) is especially inserted into the diode structure to form the NMOS-bounded (PMOS-bounded) diode, which is used to block the field oxide isolation across the p/n junction in the diode structure. The proposed N(P)MOSbounded diodes can provide more efficient ESD protection to ...

Introduction: During radiotherapy, high accuracy in the dose delivery is required because there is a strong  relationship between the absorbed dose, local tumor control and particularly the normal tissue damage. In  many institutions, in vivo dosimetry using diodes is performed to check the actual dose delivered. In general,  the uncertainty in the dose delivered should fall within  ± 5% of the...

this article is a report of calculation and measurements of a p+-n insb photo-diode leakage current fabricated by mesa on the basis of the calculation and measurement of different leakage currents in insb photo-diode along with its variation it shows that at relatively low reverse biases (up to about 300 mv) g-r and shunt current are dominant. but at high reverse biases the tunneling current do...

Background: A syringe to syringe dispersive liquid phase micro-extraction-floating organic drop was applied and used for the simultaneous extraction and pre-concentration of trace amounts of amphetamine (AMP) and methamphetamine (MAMP) in urine samples. The extracted analytes were determined by high performance liquid chromatography along with diode array detection. Materials & Methods: In thi...

High sensitivity detectors for radon in air and in water have been developed. We use electrostatic collection and a PIN photodiode for these detectors. Calibration systems have been also constructed to obtain collection factors. As a result of the calibration study, the absolute humidity dependence of the radon detector for air is clearly observed in the region less than about 1.6 g/m3. The cal...

Due to the high sensitivity, nearly linear response, and easy availability, we will use a 1N4148 diode for the temperature transducer in our measurements. The current conducted through an ideal diode is described by the Shockley ideal diode equation: I D = I S exp q V D n k B T − 1 where q is the electron charge, k B is Boltzmann's constant, T is the temperature of the diode junction, and V D i...

Due to the high sensitivity, nearly linear response, and easy availability, we will use a 1N4148 diode for the temperature transducer in our measurements. The current conducted through an ideal diode is described by the Shockley ideal diode equation: I D = I S exp q V D n k B T − 1 where q is the electron charge, k B is Boltzmann's constant, T is the temperature of the diode junction, and V D i...

Due to the high sensitivity, nearly linear response, and easy availability, we will use a 1N4148 diode for the temperature transducer in our measurements. The current conducted through an ideal diode is described by the Shockley ideal diode equation: I D = I S exp q V D n k B T − 1 where q is the electron charge, k B is Boltzmann's constant, T is the temperature of the diode junction, and V D i...