Category: 6. Chemistry

Sustainable by design solutions in adhesives usually compromise on strength and stickiness. Now, a group of chemists has created a reversible adhesive, using molecules that quickly ‘click’ and cure with visible light and easily unstick in the…

Selection of sample morphology

For flake samples, the influence of two sample morphologies (4 mm × 4 mm cuboid and powdered) on the extraction efficiency of target compounds using methanol as the extraction solvent under oscillatory…

Expression and purification of Recombinant PRELP proteins

Recombinant human full-length PRELP was prepared as described previously¹⁷. Briefly, human full-length PRELP (amino acid residues 21–382 corresponding to the numbering in the Uniprot…

This study introduces a new method for estimating inhalation doses that incorporates aerosol residence time T_R and effective impact time T_ef, improving the accuracy of exposure assessment during radiological events.

Figure 1 shows the dynamic of…

Structural elucidation of of ME, QF and nBF samples

GC-MS analysis of ME, QF and nBF samples are performed using Trace GC-TSQ mass spectrometer, the retention time (RT), concentrations (% peak area) and molecular formula for the main…

The presented method makes only a few recommendations for variables. The only variables were the Tinopal CBS-X volume and the acid phthalate buffer volume.

Optimum pH and solubility conditions

Zuranolone is a lipophilic compound with poor aqueous…

Approximate analysis of Sidr pulp from Egypt and Saudi Arabia on a dry-weight basis

Based on dry weight, the estimated chemical composition of Saudi Sidr (SS) and Egyptian Sidr (ES) was examined (Table 2). Compared to the 83.63% total carbs in SS…

Characterization of CA-MNP

The absorption spectra of as-synthesized CA-MNP are shown in Fig. 1a the hump at 378 nm confirms the presence of the carboxylate. In contrast, the uplifting of the absorption spectra from the range of 600–450 nm…

US approval of Gilead’s six-month HIV preventive injection, Yeztugo (lenacapavir), marks a significant advance in the global struggle against HIV–Aids. Two injections a year to provide near-total protection from infection is a huge step up…

Since ortho-quinodimethane was first proposed in 1957, it has remained an elusive yet valuable molecule for the creation of complex compounds found in natural products and medicines. But two chemists from Japan have now found a simpler way to…