The hypothalamic-pituitary-gonadal axis and the enigma of Alzheimer disease sex differences.

Alzheimer disease has a sex bias, with women twice as likely as men to be affected. Studies have linked elevated follicle-stimulating hormone (FSH) levels to worsened Alzheimer disease pathology and cognitive decline in mice. FSH interacts with APOE4, uncovering new aspects of Alzheimer disease.

Elaboration of geopolymer binders from poor kaolin and dam sludge waste.

The aim of this study is to synthesize geopolymer binders as an ecological alternative for conventional cement. It is intended to have geopolymer binders with molecular composition close to (4SiO.AlO.

Synthesis of alpha'L-C2S cement from fly-ash using the hydrothermal method at low temperature and atmospheric pressure.

The objective of this study was the synthesis of alpha'(L)-C(2)S (Ca(2)SiO(4)) belite cement, starting from fly-ash of system CaO-SiO(2)-Al(2)O(3)-SO(3), and using the hydrothermal method in alkaline solution. The lime deficit in these ashes was compensated by the addition of slaked lime from lime bagging workshops. The hydrothermal treatment of the mixture was carried out in demineralized water, NaOH or KOH solution, continually stirred at a temperature below 100 degrees C and atmospheric pressure.

Reduction of clinkerization temperature by using phosphogypsum.

Valorization of phosphogypsum as mineralizer in the burning of Portland cement clinker was studied in our laboratory. X-ray fluorescence, optical microscope technique and powder X-ray diffraction were then used to characterize the synthesized clinker and its raw mixture in terms of chemical composition and clinker mineralogical composition. The effects of phosphogypsum on structural and morphological properties of clinker minerals and on the presence of alite were followed by scanning electron microscopy combined with microprobe analysis.