(1) Proton induced X-ray emission (PIXE) analyses were performed on single hair fibers in triplicate from 103 individuals in order to determine sulfur, zinc, calcium, and chlorine content.
(2) quinone complex (X) was chemically reduced (state [PIX-]; P is the reaction center bacteriochlorophyll dimer, I is the long wavelength bacteriopheophytin), and compares these with the fluorescence observed when all the traps are open (state [PIX]) and with the fluorescence observed when all the traps are closed (state [P+IX]).
(3) The effect of dietary zinc deficiency on the mossy fiber zinc content of the rat hippocampus was investigated using PIXE (Particle Induced X-Ray Emission) spectroscopy.
(4) The great advantage of PIXE analysis in studying physiologically important trace elements such as Zn, Mg, Fe, and Cu is underlined.
(5) These viruses are the Eastern Equine Encephalitis (EEE), Western Equine Encephalitis (WEE), St. Louis Encephalitis (SLE), Mucambo (MUC) and Pixuna (PIX).
(6) A microwave acid digestion method for the preparation of biological samples for PIXE analysis is presented.
(7) The trace elements of both calcified atherosclerotic plaques and plaque-free vessel walls of the carotid bifurcation from 31 autopsies were investigated using the proton-induced X-ray emission (PIXE) method.
(8) In contrast, efficient transcription was observed in the cells transfected with a replicating plasmid containing the pIX gene.
(9) Antioxidant status can be evaluated by blood selenium, vitamins A and E. The level of selenium was determined in whole blood, erythrocytes and plasma of 170 French people (70-95 years old) healthy and with intercurrent illness, by using PIXE (proton-induced X-ray emission analysis).
(10) Deletion of either the sequence between positions -45 and -70 or the TATA box abolished the initiation of pIX gene transcription in vivo and transcription with HeLa cell nuclear extracts in vitro.
(11) Large samples of tissue and biopsy specimen were taken from a single human liver, homogenized or paraffin-embedded, then analyzed by PIXE.
(12) Plasmid constructs containing the pIX gene with deletions in the SP1 or TATA sites were defective in pIX mRNA production in transient expression assays.
(13) Particle-induced X-ray emission (PIXE) allows accurate determination of various elements including iron in cells and biological fluids.
(14) Particle-induced x-ray emission (PIXE) was used to determine the trace element content of bovine retinal disk membranes.
(15) A minor capsid protein, pIX, was unable to substitute in assembly of the heterologous phage.
(16) The femoral bone from the 18-day pregnancy embryo and an rib cartilage of mature mice have been investigated using PIXE (proton induced X-ray emission) in combination with a proton microprobe on snap frozen cryosectioned material.
(17) The PIX virus has the lowest prevalence and, it was isolated in only a few cases, one being from a laboratory infection.
(18) The spatial distribution of platinum (Pt) in the kidney was studied by an autoradiographic technique, in which cisplatin (CDDP) was replaced by 195mPt-labeled CDDP, and by proton-induced X-ray emission (PIXE).
(19) The multielemental capability of PIXE allows the analysis time per element to be very low if a number of elements are detected in each sample.
(20) Apart from studies on aerosols, the majority of applications of proton induced X-ray emission (PIXE) with a normal beam or a microprobe (micro-PIXE) is found in biology and medicine.
Pyx
Definition:
(n.) The box, case, vase, or tabernacle, in which the host is reserved.
(n.) A box used in the British mint as a place of deposit for certain sample coins taken for a trial of the weight and fineness of metal before it is sent from the mint.
(n.) The box in which the compass is suspended; the binnacle.
(n.) Same as Pyxis.
(v. t.) To test as to weight and fineness, as the coins deposited in the pyx.
Example Sentences:
(1) The amino acid sequence of the active center hexapeptide has been determined to be: H2NLys(Pyx)Pro-Gly-Met-Thr-Arg-COOH.
(2) After PVN injection of PYX-2 (50-900 pmoles) alone, a strong dose-dependent reduction in spontaneous carbohydrate intake at the onset of the dark cycle was observed in freely-feeding rats.
(3) This study examined the behavioral effects of a newly synthesized NPY antagonist, PYX-2.
(4) After screening a series of mixtures of NPY analogs by using an NPY antagonist assay, two potent receptor antagonists, designated PYX-1 and PYX-2, were isolated from an antagonist-containing mixture.
(5) Amino acid analysis of the peptide demonstrated the presence of N6-pyridoxyl-L-lysine (Lys(Pyx)), establishing the existence of an essential lysing residue in the active center of malate dehydrogenase.
(6) Moreover, at even lower doses (12.5 and 25.0 pmoles), PYX-2 also blocked the stimulatory action of PVN NPY (100 pmoles) on carbohydrate ingestion.
(7) Chronic conditioning by the NPY antagonist PYX-2 blocked the effect of innervation.