Structural regulation of alginate-based adsorbents based on different coordination configurations of metal ions and selective adsorption of copper ion.

To tackle the problem of developing efficient adsorbents for the selective removal of copper ions from wastewater, this investigation focused on the synthesis of Fe-GO/MMT/SA and Al-GO/MMT/SA copper ion adsorbent materials (Fe-GMS and Al-GMS), respectively, by merging two distinct metal ions (Fe(III) and Al(III)) with sodium alginate (SA), graphene oxide (GO), and montmorillonite (MMT). By introducing metal ions with different coordination configurations, the slit structure and pore density of the adsorbents can be effectively controlled, thereby enhancing the selectivity for copper ion adsorption. The results show that Fe-GMS has excellent adsorption capacity for Cu(II) compared with Al(III), and the adsorption capacity and distribution coefficient are 116.

A high titer antibody response against P22 protein immunocomplex is not correlated with protection in naturally tuberculosis-infected goats.

Caprine livestock are significant reservoirs of the complex (MTBC), contributing to tuberculosis (TB) transmission among animals and humans. The P22 protein immunocomplex (P22PI), derived from bovine tuberculin, shows immunostimulating capacity and is used for TB diagnosis. This study assessed the immunogenicity and protective efficacy of P22PI in two groups of goats: 24 naïve goats (12 immunised, 12 controls) from a TB-free herd, and 24 infected goats (12 immunised, 12 controls), referred to as pre-infected animals, from a -infected herd.

Au(I)/Au(III)-Catalyzed Sulfonylation of Aryl Iodides for the Synthesis of Various Functionalized Aryl Sulfones.

A gold-catalyzed sulfonylation reaction of aryl iodides with different sodium sulfinates facilitated by the ligand-enabled Au(I)/Au(III) redox catalysis was developed. In the reaction of gold-catalyzed C-S coupling, a variety of functionalized sodium sulfinates, such as CF, CHF, CH, and alkyl groups, can react smoothly with aryl iodides to directly construct diversely functionalized aryl sulfones. This gold-catalyzed sulfonylation offers a complementary method for synthesizing functionalized aryl sulfones with electron-donating groups.

Tunable Rh(III)-Catalyzed C(sp)-H Bond Functionalization of Aryl Imidates with Cyclic 1,3-Diones: Strategic Use of Directing Groups.

A tunable Rh(III)-catalyzed C(sp)-H bond functionalization of aryl imidates with cyclic 1,3-diones was developed. With suitable and straightforward reaction condition adjustments, the C-H bond functionalization of diverse aryl imidates with cyclic 1,3-diones occurred smoothly and precisely at room temperature. Accompanied by different directing group transformations, a series of corresponding aryl nitriles, hydrophenanthridin-1(2)-ones, spiro isoindoles, or hydrophenanthridine-1,6(2,5)-diones were synthesized in good yields to provide a rational directing group utilization strategy for the Rh(III)-catalyzed C(sp)-H bond activation.

Hydrogen sulfide inhibits skeletal muscle ageing by up-regulating autophagy through promoting deubiquitination of adenosine 5'-monophosphate (AMP)-activated protein kinase α1 via ubiquitin specific peptidase 5.

Background: Hydrogen sulfide (HS), the third gasotransmitter discovered, regulates a variety of physiological functions. Whether HS alleviates skeletal muscle ageing by regulating autophagy has not been reported.

Methods: Mice were administered 150 mg/kg/day of D-galactose (D-gal), and C2C12 myotubes were cultured in 20 g/L D-gal to induce ageing.