Magnetic resonance imaging (MRI) is a powerful clinical imaging technique that allows for non-invasive tomographic visualization of anatomic structures with high spatial resolution and soft tissue contrast. However, its application in molecular imaging of cancer has been limited due to the lack of sensitivity and detection accuracy in identifying the biological processes of this disease. Recent...

Coprecipitation with iron (Fe) plays an essential role in the biogeochemical cycles of organic carbon (OC) and phosphorus (P) lakes. The sources composition matter (OM) mediate its association iron, which could thus influence immobilization phosphorus. In this study, water-soluble from sediments two typical states shallow lakes, macrophyte-dominated zones (M-WSOM) algae-dominated (A-WSOM), was ...

Introduction: Iron oxide nanoparticles, owing to their very small size and superparamagnetic properties, have been considered a potential candidate for several medical applications such as magnetic cell separation, magnetic resonance imaging (MRI), magnetic targeted drug delivery magnetichyperthermia. The present study aimed to synthesize and evaluate the characteristics of super...

A sensitive and simple method for the determination of trace amounts of indium in water samples by graphite furnace atomic absorption spectrometry (GFAAS) after coprecipitation with chitosan was investigated. Indium was quantitatively preconcentrated from water samples by coprecipitation with chitosan at pH 7.0-9.0. The coprecipitant was easily dissolved with acetic acid, and indium in the resu...

We have determined the electrochemical characteristics of the high voltage, high capacity Li-ion battery cathode material Li[Li2/12Ni3/12Mn7/12]O2 prepared using three different synthesis routes: sol-gel, hydroxide coprecipitation, and carbonate coprecipitation. Each route leads to distinct morphologies and surface areas while maintaining the same crystal structures. X-ray photoelectron spectro...

Lead measurementsby direct AAS at 217 nm on a pooled urine sample gave values of 57 pg/i by the method of standard additions. In contrast, dithizone procedures gave values of 15-20 pg/i. Studies demonstrated that various urine salts and organic compoundscontributed to the absorbance at 217 nm. These native urine materials also give a similar absorbancevalue at 220 nm, a line not related to lead...

This method was developed for the determination of trace amounts of aluminum(III) in dialysis concentrates using atomic absorption spectrometry after coprecipitation with lanthanum phosphate. The analytical parameters that influenced the quantitative coprecipitation of analyte including amount of lanthanum, amount of phosfate, pH and duration time were optimized. The % recoveries of the analyte...

We present evidence that in a very thin regime the magnetic layers become discrete islands and superparamagnetic in multilayered CoNi 1–17 nm /Cu 4.2 nm nanowires grown by pulsed electrodeposition using a hole pattern of anodized alumina templates. Magnetic hysteresis loops measured at room temperature using a vibrating sample magnetometer show that superparamagnetism appears at t CoNi 1.7 nm, ...