Protein acetylation is a common modification that plays a central role in several cellular processes. The most widely used methods to study these modifications are either based on the detection of radioactively acetylated oligopetide products or an enzyme-coupled reaction measuring conversion of the acetyl donor ...

... in Amperometric Biosensors. UNCLASSIFIED 12. ... Elimination of Electrooxidizable Interferant-Produced Currents in Amperometric Biosensors ...

... BANDPASS FILTERS, ELIMINATION, FILTERS, SIGNALS, BROADBAND, INTERFERENCE, PIPELINES. Subject Categories : ELECTRICAL AND ...

...Telecommunication 1 2010-10-01 2010-10-01 false Elimination and investigation of harmful interference. 18.115 ...AND MEDICAL EQUIPMENT General Information § 18.115 Elimination and investigation of harmful interference. (a)...

The increased threat of radio interference on ships because of the ever increasing sensitivity of receiving equipment and the great number of onboard electric installations is discussed, including measures to eliminate interference. If interference levels...

... Abstract : Electrooxidizable ascorbate, urate and acetaminophen, that interfere with amperometric glucose assays are completely and rapidly ...

Practice can, in some cases, largely eliminate measured dual-task interference. Does this absence of

sources of radio frequency interference (RFI) inside the stations. ... eliminate or minimize the impact of ' interference on Deep Space Network support of ...

A method and apparatus for removing porphyrins from a fluid sample which are unrelated to the number

The basic principles underlying the elimination of electrical interference from circuits, which is necessary in order that their sensitivities can approach the fundamental Johnson noise limit, are presented. Eliminating all possible sources of extraneous interference is vital for the successful performance of ...

The synthesis of styrene momomer p-vinylbenzoylacetophenone (monomer i) has been carried by the acetylation of 2- chloroethylbenzene and base elimination of the resulting 4-acetyl-2-chloroethylbenzene to give 4- acetylstyrene. This monomer was benzoylated...

These experiments document the presence of enzymatic activities in extracts of commonly used cell lines which interfere with the determination of CAT activity. We suspect that the deacetylase activity is the most important, as the extract of the H4IIE C3 cells was capable of completely deacetylating the mono- and diacetylchloramphenicol formed during a 2-hr incubation of CAT ...

Synthetic Aperture Radar (SAR) often suffers from interference signal from various radio sources. In general, notch filters or band elimination filters have been utilized to eliminate such interference signal; however, if the bandwidth of the interference signal is relatively wide, the gap in ...

Two methods for eliminating luminol interference materials are described. One method eliminates interference from organic material by pre-reacting a sample with dilute hydrogen peroxide. The reaction rate resolution method for eliminating inorganic forms ...

... Abstract : The development is described of the AN/GPX-27 interference blanker or defruiting equipment that uses storage tubes to eliminate ...

... of Impulse Noise Interference from Communications Receivers by the RF Blanker Method. ... An improvement in S/N ratio of up to 60 db is obtained ...

Electrooxidizable ascorbate, urate and acetaminophen, that interfere with amperometric glucose assays are completely and rapidly oxidized by hydrogen peroxide in a multilayer electrode. The multilayer electrode is composed of an immobilized, but not elect...

Mercapturic acid formation, an established pathway in the detoxication of xenobiotics, is demonstrated for cysteinyl leukotrienes generated in rats in vivo after endotoxin treatment. The mercapturate N-acetyl-leukotriene E4 (N-acetyl-LTE4) represented a major metabolite eliminated into bile after injection of (/sup 3/H)LTC4 as shown by ...

Time-resolved fluorescence spectrometry is used to eliminate bilirubin interference in the fluorometric determination of fluorescence. Despite complete spectral overlap of the excitation and emission of these two species, a difference in fluorescence life...

The effectiveness of thiosemicarbazide, tellurium, and potassium iodide as masking agents to eliminate interferences was assessed. Thiosemicarbazide was found to be effective in eliminating or reducing the interferences on arsenic, antimony, and bismuth, ...

A method was developed for automatically and rapidly making determinations of the total number of bacteria, alive and dead, present in a fluid sample, by using the iron porphyrin assay method. The method provides for eliminating luminescent interference c...

Annual progress report for the period July 1972 through June The interference of mercury, platinum and palladium in the NBL titrimetric method for uranium can be eliminated by a copper colunm technique. (auth)

A nonaqueous titration procedure is described for determining aminoacetic acid and nicotinic acid in mixtures and elixirs. The effect of acetylated aminoacetic acid on the potentiometric titration of nicotinic acid is discussed. Above a 2:1 ration of aminoacetic acid to nicotinic acid, the former interferes with titration. The titration curve of nicotinic ...

... 1,2]. The nonlinear interaction of the ... by the interference between the resonant and nonresonant ... or elimination of the nonresonant background and ...

Feb 27, 2003 ... design change has been approved that will eliminate the potential for interference with the ET separation mechanism. ...

... The first receiver to be considered is the zero-forcing equalizer which totally eliminates intersymbol interference (ISI) but may attenuate the signal ...

Apr 3, 2002 ... This short residence time, large diameter flow system "effectively eliminates" the possibility of interferences from wallcatalyzed ...

Radionuclides currently used in clinical medicine were evaluated for their possible interference with radioenzymatic assays of aminoglycoside antibiotics. Of the radiopharmaceuticals tested, only ⁶⁷Ga citrate interfered with the radioenzymatic assay of gentamicin. Radioenzymatic assay of serum samples obtained from patients receiving ...

Resonance ionization mass spectroscopy (RIMS) is used to eliminate isobaric interference when determining the isotopic abundances of an element. In this application, RIMS is applied to the determination of promethium with the removal of samarium interference. In particular, promethium-147 is separated form samarium-147 and ...

Interferences of autoionizing lines may reduce or eliminate absorption of lower level atoms. Stimulated emission shows no such interferences, thereby allowing laser gain without population inversion.

This report takes a cursory look at the possibility of using signal cancellation techniques as an alternate method for eliminating interference in these cases. The technique is particularly suited to interference from the proposed solar-power satellite wh...

Post-translational modifications (PTM) corresponding to a gain in mass of 42 Da are of increasing interest. It has been widely recognized that acetylation and trimethylation on Lys regulates gene transcription and silencing. In addition, it was recently discovered that acetylation of Ser and Thr residues on a signaling kinase can block its activation. In ...

The development of morphological neuronal polarity starts by the formation and elongation of an axon. At the same time the axon initial segment (AIS) is generated and creates a diffusion barrier which differentiate axon and somatodendritic compartment. Different structural and functional proteins that contribute to the generation of neuronal action potential are concentrated at the axon initial ...

Histone acetylation constitutes an epigenetic mark for transcriptional regulation. Here we developed a fluorescent probe to visualize acetylation of histone H4 Lys12 (H4K12) in living cells using fluorescence resonance energy transfer (FRET) and the binding of the BRD2 bromodomain to acetylated H4K12. Using this probe designated as ...

Recent studies have established that the highly condensed and transcriptionally silent heterochromatic domains in budding yeast are virtually dynamic structures. The underlying mechanisms for heterochromatin dynamics, however, remain obscure. In this study, we show that histones are dynamically acetylated on H4K12 at telomeric heterochromatin, and this ...

Acetylated and methylated lysine residues in histone H3 play important roles in regulating yeast gene expression and other cellular processes. Previous studies have suggested that histone H3 acetylated and methylated lysine residues may functionally interact through interdependent pathways to regulate gene transcription. A common genetic test for ...

The pyrogallol method for Ta was improved in two ways. First, the addition of boric acid eliminates the interference from fluoride. Second, incorporation of an extraction with ethyl acetate, in the presence of a long- chain quaternary ammonium ion, eliminates the interference from V/sup 5+? and decreases ...

This paper reports on a selective filter that is capable of eliminating positive interference in the coulometric measurement of ambient concentrations of total reduced sulfur gases which has been successfully developed and field tested. Most of the interference was found to be caused by terpenes, which react with bromine, the active ...

A formal optimization method for eliminating the potential of Boiling Water Reactor channel-blade interference is presented within the context of fuel cycle design. The method is based on the use of threshold constraints on blade force as penalty terms within an objective function that are employed as part of a search algorithm. Results demonstrate the ...

This paper presents the interference effect of two intersecting waves on a surface acoustic wave(SAW) devices. The SAW interference device consists of input-output interdigital transducers(IDTs) to transmit and receive a Rayleigh wave and two interference IDTs to transmit shear-horizontal(SH) waves. The SH-waves intersects ...

Access to the article is free, however registration and sign-in are required. The plague-causing bacterium Yersinia pestis injects toxic proteins into its hosts' cells. One of these interferes with the host's secretion of a protective factor by adding acetyl groups to a signaling kinase, blocking its activation.

We report the deacylation of (20R)-20-acetyl-23,24-dinorcholanic lactones by hydrazine hydrate, under microwave irradiation in high yields. The elimination of the 20-acetyl group proceeded with retention of configuration which contrast with other proved deacylation methods that yield a mixture of diastereoisomers. In this way, ...

NADH or succinate oxidation and malate oxidation were differentially affected in mitochondria from both susceptible and resistant corn by a purified and chemically characterized preparation of host-specific toxin from Bipolaris (Helminthosporium) maydis, race T. NADH and succinate oxidation by susceptible T corn mitochondria were stimulated 50 to 200% with apparent uncoupling from the cytochrome ...

The long-established Folin-Ciocalteu (F-C) assay for total phenolics can have limitations due to interference by ascorbic acid (AsA). For common fruit juices this interference can easily exceed the magnitude of the total phenolic signal itself. Approaches to eliminating the AsA interference are brie...

When Ss had to indicate if the colors of pairs of items from the Stroop test were the same or different, the usual interference effect was completely eliminated. However, when the verbal information consisted of SAME and DIFF rather than color names, inte...

Airborne laser fluorosensor measurements of fluorophore concentrations in surface waters are highly sensitive to interference from changes in optical attenuation. This interference can be eliminated by normalizing the fluorescence signal with the concurrent water Raman signal. In...

Pulsed laser single color 2 + 1 multiphoton ionization is used to eliminate isobaric interferences for lead and bismuth mixtures detected via resonance ionization mass spectrometry.

Annual progress report for the period July 1972 through June Fluoride above certain concentrations was shown to interfere with the NBL titrimetric method for uranium. The interference can be eliminated by an evaporation step or by complexing prior to the determination of uranium. (auth)

A modified Klein-Weissman chromotropic acid assay technique is described for the determination of soluble and insoluble glucose oligomers. A procedure is presented for applying the method to the enzymatic hydrolysis products of cellulose, and the interference of lignin and a method for the elimination of this interference are ...

Design information is presented concerning the possible piping interferences in FFTF cells 489, 422E, 529A, and 529B.

A noise coded communications system which eliminates continuous wave (CW) interference while providing no loss or degradation of the desired signal includes the variable delay line and a linear adder coupled to the output of the front end section of a mul...

The interference of metals with the determination of arsenic by the silver diethyldithiocarbamate (SDDC) Method was investigated. Low recoveries of arsenic are obtained when cobalt, chromium, molybdenum, nitrate, nickel or phosphate are at concentrations of 7 mg/l or above (indiv...

... residues from the edible fillet of rainbow trout ( Oncorhynchus mykiss ) Stehly, G. R., Meinertz, J. R., and Gingerich, ... residues from the edible fillet of rainbow trout ( Oncorhynchus myki...

Polyethylene vacuum windows that are suitable for use in far-infrared optics are described. Interference fringes are eliminated by making windows wedge shaped.

That work suggests that when quantum mechanical effects are included, the paradoxes become self-canceling, eliminated by destructive interference within the ...

Two simple tests proved that more sophisticated filtering on a system designed for plasma arc welding will eliminate any optical interference completely. ...

Noise that interferes with sleep (although most machines are quiet) Nosebleeds Upper respiratory infections Many of these problems can be helped or eliminated by the following...

Nov 27, 1979 ... Title: Method and apparatus for eliminating luminol interference material. Author(s): Jeffers, E. L.. Abstract: A method and apparatus for ...

shape, eliminating or reducing the wall effects on the model. The combination of flight. Reynolds number capability and minimal wall interference makes the ...

Endocrine disrupter compounds (EDCs) are exogenous agents that interfere with the production, release, transport, metabolism, binding action, or elimination of the natural hormones in the body responsible for the maintenance of homeostasis and regulation of developmental processe...

The purpose of their study was to determine the conditions necessary for eliminating the interference from molybdate and silicon as well as developing a controlled-potential coulometric method for the determination of phosphorus.

1. Branchial and urinary elimination of benzocaine residues was evaluated in adult rainbow trout, oncorhynchus mykiss, given a single dorsal aortic dose of c-14-benzocaine hydrochloride.^2. Branchial elimination of benzocaine residues was rapid and accounted for 59.2% Of the dose during the first 3 h after dosing. Renal elimination ...

1. Branchial and urinary elimination of benzocaine residues was evaluated in adult rainbow trout, Oncorhynchus mykiss, given a single dorsal aortic dose of 14C-benzocaine hydrochloride. 2. Branchial elimination of benzocaine residues was rapid and accounted for 59.2% of the dose during the first 3 h after dosing. Renal elimination of ...

A number of serious interferences in the determination of the noble metals by atomic-absorption spectrophotometry have been investigated, and ways of eliminating them considered. The use of the nitrous oxide and acetylene flame reduced many of the interferences but also reduced the sensitivity. Additions of lanthanum, copper sulphate, ...