Power Molding Inductors Prepared Using Amorphous FeSiCrB Alloy Powder, Carbonyl Iron Powder, and Silicone Resin.

In this study, amorphous FeSiCrB alloy powder, carbonyl iron powder, and high-temperature heat-resistant silicone resin were used to prepare power molding inductors, and the effects of different heat treatment procedures on the magnetic properties were investigated. Two heat treatment procedures were used. Procedure 1: Amorphous FeSiCrB alloy powder was pre-heat-treated, then mixed with carbonyl iron powder and silicone resin and uniaxially pressed to prepare power inductors.

Synthesis and Bioassay of Neurogenically Potent Gangliosides DSG-A, Hp-s1 and Their Analogues.

In the search of a potent candidate for neurotherapy, we designed and synthesized various analogues of ganglioside Hp-s1. The modification includes the change in hydrophobicity by varying the carbon chain length, altering the number of hydrogen bonds, and replacing the anomeric atom. The chemical synthesis was carried out by using various methods and discussed in details.

A practical background correction method for an immediately repeated first-pass radionuclide angiography.

Background: A satisfactory bolus injection is essential for a successful first-pass radionuclide angiography (FPRNA). Rescheduling the FPRNA study is usually needed due to high background interference caused by an unsatisfactory bolus injection. We developed a protocol to correct the pre-existing background activity subsequent to immediately repeating the study.

Effects of the Acute and Chronic Ethanol Intoxication on Acetate Metabolism and Kinetics in the Rat Brain.

Background: Ethanol (EtOH) intoxication inhibits glucose transport and decreases overall brain glucose metabolism; however, humans with long-term EtOH consumption were found to have a significant increase in [1- C]-acetate uptake in the brain. The relationship between the cause and effect of [1- C]-acetate kinetics and acute/chronic EtOH intoxication, however, is still unclear.

Methods: [1- C]-acetate positron emission tomography (PET) with dynamic measurement of K and k rate constants was used to investigate the changes in acetate metabolism in different brain regions of rats with acute or chronic EtOH intoxication.

Persistent Left Superior Vena Cava Demonstrated by First-Pass Radionuclide Angiography.

Persistent left superior vena cava (PLSVC) is a development variation of the embryonic thoracic venous system. It can be isolated or associated with congenital heart disease combined with shunting problems. Many image findings of PLSVC have been reported, but few mentioned findings in a first-pass radionuclide angiography.

Quantification method in [18F]fluorodeoxyglucose brain positron emission tomography using independent component analysis.

Objective: To extract accurate image-derived input functions from dynamic brain positron emission tomography images (DBPIs) using independent component analysis (ICA).

Methods: A modified linear model with haematocrit correction was used to improve the accuracy of input functions estimated by independent component analysis and to reduce the error of quantitative analysis. Two types of material were examined: (1) a simulated dynamic phantom with a three-compartment, four-parameter model; (2) clinical 2-h DBPIs with a standard plasma sampling procedure.

Estimating the input function non-invasively for FDG-PET quantification with multiple linear regression analysis: simulation and verification with in vivo data.

A novel statistical method, namely Regression-Estimated Input Function (REIF), is proposed in this study for the purpose of non-invasive estimation of the input function for fluorine-18 2-fluoro-2-deoxy- d-glucose positron emission tomography (FDG-PET) quantitative analysis. We collected 44 patients who had undergone a blood sampling procedure during their FDG-PET scans. First, we generated tissue time-activity curves of the grey matter and the whole brain with a segmentation technique for every subject.