We review current astrophysical bounds on MeV sterile neutrinos, and then we discuss why a sterile keV neutrino is a natural warm dark matter candidate.

measurement of availability and mobility of heavy metals in river sediments is required in order to understand the behavior of these metals and to prevent potential toxic hazards. leaching column experiments were conducted for four sediment samples to determine the degree of mobility and the distribution of zn, cd, ni, cu, and pb because of an application of spiked heavy metals in sediments. se...

Organization scholars have highlighted the value of relationships in fostering effective exchange, suggesting that repeated exchange creates a relational asset with latent value derived from elevated social connections, norms, and simple expectations of exchange continuity. Yet the empirical evidence supporting such claims remains largely indirect. As a consequence, few studies have been able t...

Annually, over 30 million dry tonnes of biosolids are produced worldwide, most which disposed into landfills or discharged waterbodies, exacerbating eutrophication and water-borne diseases. Bioconversion using Black Soldier Fly larvae (BSFL) can produce high-value biomass (protein, lipids, chitin) while reducing the volume waste that requires disposal. We aimed to determine bioconversion perfor...

Phthalates, or phthalic acid ethers, are hazardous for human health as they produce negative effects on the endocrine system and liver when entering a body. Alimentary introduction into a body with food products is priority phthalates. Phthalates contents in milk of particular interest since most popular product among population. It vital to assess whether ph...