0.1. Related results. Krstić-McCool proved that GL3(A) is not finitely presented if there is an epimorphism from A to F [t] for some field F [Krs-Mc]. Suslin proved that SLn(A[t1, . . . , tk]) is generated by elemetary matrices if n ≥ 3, A is a regular ring, and K1(A) ∼= A× [Su]. GrunewaldMennicke-Vaserstein proved that Sp2n(A[t1, . . . , tk]) is generated by elementary matrices if n ≥ 2 and A ...

Asphaltene adsorption on reservoir rock minerals causes wettability alteration and pore plugging which subsequently reduces crude oil production. Also, it has a negative effect the efficiency of production enhanced recovery operations. In this study, extracted asphaltenes two samples Iranian fields dolomite, quartz, magnetite was investigated in two-and three-phase systems both static dynamic flow...

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Mycotoxins are fungal secondary metabolites that if ingested can cause a variety of adverse effects on both humans and animals.Aflatoxins are cancerogenic compounds produced predominantly by certain strains of the Aspergillus genus. They have immunosuppressive, mutagenic, teratogenic and carcinogenic effects, especially on the liver. A variety of physical, chemical and biological methods have b...

Chronic kidney disease (CKD) is a global health burden of growing incidence and prevalence. As renal function declines disturbances in mineral metabolism, such as hyperphosphatemia and secondary hyperparathyroidism, inevitably develop. These metabolic changes are closely associated with poor prognosis and survival. The bonederived hormone fibroblast growth factor-23 (FGF23) and its co-receptor ...