Chapter 1 The attempted syntheses of molybdenum imido alkylidene complexes of the type Mo(NArc,)(CH-t-Bu)[Biphen] and Mo(N-2-CF 3C6H4)(CHCMe 2Ph)[Biphen] (Biphen2 = 3,3'-di-t-butyl-5,5',6,6'-tetramethyl1,1'-biphenyl-2,2'-diolate) from Mo(NArcl)(CH-tBu)(OTf)2(dme) and [Biphen]K2 have sporadically afforded mixtures containing the desired products along with the corresponding amido alkylidyne comp...

Soil use and occupation alter the physicochemical biological processes of aquatic ecosystems. Urban streams are fundamental components macro-drainage system cities; however, with advance urbanization, most modified to point that they no longer recognized as but sewage receptors. Physical diagnosis monitoring water quality essential understand trophic state these ecosystems in relation environme...

Abstract The physico-chemical and microbial examination of Ajali River in Ezeagu Local Government Area (LGA) Enugu State, South-eastern Nigeria, were carried out to assess the characteristics water for potability. Water samples collected from three sampling points, including one close brewery effluent discharge into river two different points that affected by non-point sources. Altogether, eigh...

Ground water demand in India has significantly increased as a result of the country's fast population development, industrialization, and urbanization. Using quality index, or WQI helpful numerical instrument for deriving complex information from any body reporting analyzing it. is essentially mathematical method calculating single value set test results. Any model can explain degree contaminat...

Abstract This study aimed to evaluate the water quality of Darbandikhan Reservoir for different purposes by using an integrated approach index (WQI), heavy metal pollution (HPI) and (MI). The samples were collected from twenty sampling stations across reservoir in December 2021, selected GPS. Seven physicochemical parameters examined determine (WQI) including: (pH, turbidity, TDS, NO 3 -2 , DO,...

صخلملا Seasonal variation of zooplankton biomass has been carried out at two selected sites on Greater Zab River. Monthly samples of water were collected during period from January to December 2008. Some physico-chemical properties of water were studied including water temperature (from 8 to 30.5 C), hydrogen ion concentration (from 6.3 to 8), EC (from 255 to 821 μs.cm), turbidity (1085 NTU), d...

Water quality in the Dawu water source area is primarily studied through traditional assessment method that measures chemical parameters of against existing standards, which simple but cannot accurately describe quality. Although index (WQI) proposed by Horton widely used for comprehensive evaluation, parameter selection and weight determination are based on Delphi method, subjective random. Mo...