Spectrophotometric determination of vanadium(V) with methoxypromazine maleate and its application to vanadium steels and minerals

The reagent in 8-fold excess forms a violet species with vanadium(V) instantaneously in 1–3 M phosphoric acid. The absorption maximum is at 565 nm; the molar absorptivity is 1.65 × 104 l mol−1 cm−1. Beer's law is obeyed over the range 0.1–6.5 mg l−1 vanadium (V); the optimum range is 0.3–6.0 mg l−1; the Sandell sensitivity is 3.1 ng cm−2. The method is simple and selective. The method is applicable for the determination of vanadium in vanadium steels and minerals

Spectrophotometric method for the determination of thallium(III) with chlorpromazine hydrochloride

A simple, sensitive and rapid spectrophotometric method for the determination of thallium(III) is described, based on the reaction between chlorpromazine hydrochloride and thallium(III) in 4-7 M orthophosphoric acid at room temperature to form a pink species with an absorption maximum at 526 nm. Beer's law is obeyed over the concentration range 0.1-11.5 μg ml-1 of thallium(III), the optimum range being 1.0-10.0 μg ml-1. The Sandell sensitivity of the reaction is 0.0096 μg cm-2 and the molar absorptivity is 2.1 à 104 l mol-1 cm -1. The tolerance limit of the method towards various cations and anions usually associated with thallium has been determined. The method can be used for the determination of thallium in its alloys

Potassium N-bromo-4-chloro-2-methylbenzenesulfonamidate monohydrate

In the title compound, K+·C7H6BrClNO2S -·H2O, the K+ cation is heptacoordinated by two water O atoms, four sulfonyl O atoms of four different N-bromo-4-chloro-2- methylbenzenesulfonamidate anions, and one Br atom of one of the anions. The S - N distance of 1.584 (3) à is consistent with an S=N double bond. In the crystal, the anions are linked into layers by O - H...Br and O - H...N hydrogen bonds

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A Review of the Effectiveness of Neuroimaging Modalities for the Detection of Traumatic Brain Injury

The incidence of traumatic brain injury (TBI) in the United States was 3.5 million cases in 2009, according to the Centers for Disease Control and Prevention. It is a contributing factor in 30.5% of injury-related deaths among civilians. Additionally, since 2000, more than 260,000 service members were diagnosed with TBI, with the vast majority classified as mild or concussive (76%). The objective assessment of TBI via imaging is a critical research gap, both in the military and civilian communities. In 2011, the Department of Defense (DoD) prepared a congressional report summarizing the effectiveness of seven neuroimaging modalities (computed tomography [CT], magnetic resonance imaging [MRI], transcranial Doppler [TCD], positron emission tomography, single photon emission computed tomography, electrophysiologic techniques [magnetoencephalography and electroencephalography], and functional near-infrared spectroscopy) to assess the spectrum of TBI from concussion to coma. For this report, neuroimaging experts identified the most relevant peer-reviewed publications and assessed the quality of the literature for each of these imaging technique in the clinical and research settings. Although CT, MRI, and TCD were determined to be the most useful modalities in the clinical setting, no single imaging modality proved sufficient for all patients due to the heterogeneity of TBI. All imaging modalities reviewed demonstrated the potential to emerge as part of future clinical care. This paper describes and updates the results of the DoD report and also expands on the use of angiography in patients with TBI