The pyrolysis of Cu(CF3COO)2·nH2O at temperatures up to 1000 °C, under flowing pure Ar, O2 and O2 saturated with water vapour, was extensively analysed. Decomposition reaction paths in all three media are proposed and various solid intermediates and gaseous products are identified. Cu2(CF3COO)...
The densities, refractive indices and compositions of solutions of electrolyte mixtures in quaternary system LiCl + RbCl + MgCl2 + H2O at 323 K were determined by isothermal evaporation method. The stereo phase diagram, the metastable phase diagram, the water content diagram, and the diagrams of...
In the current study, a novel precipitant, sodium metasilicate nonahydrate, was investigated as a new magnesium precipitant for separating lithium from magnesium in brine with a high Mg/Li mass ratio. Various parameters and relative mechanisms of the precipitation process such as reaction time, ...
Enthalpies of solution of LiCl and of LiCl · H2O in water at 298.15 K were measured. Results with different procedures of sample handling are discussed, including the use of the equilibrium between LiCl · H2O and its aqueous saturated solution as a hygrostat. The molar enthalpies of solution e...
Lithium is one of the most important raw materials for the production of glass, ceramics, nuclear materials, pharmaceuticals, and batteries. Almost 80% of total land-based lithium reserves globally are salt-lake brines. Therefore, lithium should be extracted from salt-lake brines to meet the dem...
Organic 4-Dimethylaminopyridine inorganic Lithium chloride (4-DMAPLC) has been taken in stoichiometric ratio and synthesized 4-dmethylaminopyridine lithium chloride crystal by slow evaporation solution growth technique using water as a solvent. Customizable size 4-DMAPLC crystals were harvested ...
In the actual context of climate change threats, lithium batteries fulfil lot of expectations in order to achieve a cleaner and more sustainable solution for transports, embodied by electric vehicles. According to different studies that identified a noticeable discrepancy between consumption and...
Due to lithium’s high energy along with other exceptional characteristics, lithium demand across many industries is rising, specifically for Li-batteries. Therefore, a sufficient supply of high purity lithium is vital in order for these significant technologies to develop. In the current work, ...
Using density functional theory (DFT), a systematic study of structure, bonding, vibration, excitation energies and non-linear optical properties has been carried out for noncentrosymmetric l-proline lithium chloride monohydrate and l-proline lithium bromide monohydrate for the first time. The c...
l-Proline Lithium Chloride Monohydrate single crystal has been successfully synthesized and grown by slow evaporation solution technique. The lattice dimensions have been calculated by single crystal XRD. The presence of strain inside the crystal has been evaluated by powder X-ray diffraction. I...
ObjectiveChanges in cholesterol ester (CE) content regulate the progression of atherosclerosis. However, the spatial dynamics of CE subsets and their quantitative changes during lesion progression are not well understood due to a lack of appropriate imaging techniques. In this study, we develope...
A general method for the preparation of mixed allyl vinyl dimethylsilanes uses the sequential coupling of two different alkenylmetallics to (chloromethyl)dimethylchlorosilane. This method is applied to synthesize the 12-dimethylsila analog of squalene.
A carbon quantum dots (CQDs) based ratiometric nanosensor exhibiting dual emission fluorescence was developed. The spherical fluorescent carbon nanoparticles were obtained from lactose using a hydrothermal method. Under a single excitation at 355 nm they showed the typical blue emission at 417 n...
The main objective of this investigation was to test the hypothesis that brain serotonin (5-HT) synthesis, as measured by trapping of α-[11C]methyl-l-tryptophan (α-MTrp) using positron emission tomography (PET), can be modulated by changes in blood oxygen. The study involved six healthy partic...
The antidepressant selective serotonin transporter inhibitors (SSRIs) are clinically active after a delay of several weeks. Indeed, the rapid increase of serotonin (5-HT) caused by SSRIs, stimulates the 5-HT1A autoreceptors, which exert a negative feedback on the 5-HT neurotransmission. Only whe...
Alpha-[11C]methyl-l-tryptophan (AMT) has been synthesized by stereoselective methylation with [11C]methyl iodide of the lithium-enolate generated by treating dimethyl 2(S),3a(R),8a(S)-(+)-hexahydro-8(phenylsulfonyl) pyrrolo[2,3-b]indole-1,2-dicarboxylate (2) with lithium diisopropyl amide (LDA) ...
A practical method for the preparation of large amounts of enantiomerically pure α-[14C]methyl-L-tryptophan using the enzymatic resolution of the corresponding D,L-methyl ester is reported. The radiolabelled α-methyl group was introduced using the α-methylation of the lithium enolate of the S...
Low serotonin neurotransmission is thought to increase vulnerability to suicidal behavior. To test this hypothesis, we measured brain regional serotonin synthesis, as indexed by PET and α-[11C]methyl-l-tryptophan trapping, in 10 patients who had made a high-lethality suicide attempt and 16 heal...
Lumped constant (LC) is a constant used to convert brain trapping constant of α-methyl-l-tryptophan (using α-14C-methyl-l-tryptophan) into the constant for conversion of tryptophan into serotonin (5-hydroxytryptamine, 5-HT), which can be then used with certain assumptions in the calculation of...
Preliminary studies suggest that alpha[11C]methyl-l-tryptophan positron emission tomography can detect the epileptic focus within malformations of cortical development. We determined the sensitivity and specificity of alpha-[11C]methyl-l-tryptophan positron emission tomography in identifying epi...
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