Earth’s life may have originated as self-replicating RNA, and it has been argued that RNA viruses and viroid-like elements are remnants of such pre-cellular RNA world. RNA viruses are defined by linear RNA genomes encoding an RNA-dependent RNA polymerase (RdRp), whereas viroid-like elements...
(compounds)orsingleelementmicronutrients.Allinchelatedaswellasinsulphateform.Mainlyusedfornourishingplantsinfertigationsystems,andasaningredientforNPKs.EDTAchelateswillnotinjureleaftissue,whichmakesthelineofPremiumMixtraceelementsisalsoidealforfoliarspraying.TheVanIperenEDTAlineofphysicalmixedtraceelementsareproducedusinga...
of two functionally different tree species, the N-fixing, broadleaf, deciduous black locust (Robinia pseudoacaciaL.), and the Mediterranean black pine (Pinus nigraArn.), planted on recent unconsolidated volcanic deposits.
Bioremediation is an increasingly popular alternative to conventional methods for treating waste compounds and media with the possibility to degrade contaminants using natural microbial activity mediated by different consortia of microbial strains. Many studies about bioremediation have been reported and the ...
The foundations of stable isotope geochemistry were laid in 1947 by Urey’s classic paper on the thermodynamic properties of isotopic substances and by Nier’s development of the isotope ratio mass spectrometer (IRMS).
Zhang X, Zhang D, Zhang H, Luo Z, Yan C (2012) Occurrence, distribution, and seasonal variation of estrogenic compounds and antibiotic residues in Jiulongjiang River, South China. Environ Sci Pollut Res 19:1392–1404 ArticleCASGoogle Scholar ...
Arsenic (As) toxicity is a global phenomenon, and it is continuously threatening human life. Arsenic remains in the Earth’s crust in the forms of roc
The drafting of standards is thematically divided into rare earth terms and definitions (minerals, oxides and other compounds in part 1, and rare earth metals and their alloys, in part 2), as well as into rare earth elements recycling (communication formats for providing recycling information on...
The experiments reviewed here commence from mixtures of the elements. Alternatives, such as using precursors, may be required to obtain meta-stable structures, but this approach is not established for the synthesis of the compounds of interest here. While fine grained graphite and boron are readily...
Occurrences of compounds of Se and the iridium subgroup of the PGE (IPGE: Ir, Os, and Ru), or of phases of the PGE selenides in ophiolitic or other primitive ultramafic rocks, must be extremely rare. One such occurrence, i.e., members of the RuS2 (laurite)—unnamed RuSe2 series, ...