Experimental investigation on dish solar distiller with modified absorber and phase change material under various operating conditions

Environmental Science and Pollution Research - The shortage of potable water is a global problem. One of the techniques used to participate solving this problem is the solar distiller. The main...     

Preparation,characterization and toxic activity of oxovanadium(IV) mixed-ligand complexes

New oxovanadium(IV) mixed-ligand complexes of the general composition [VO(L)(A)], where KHL?=?potassium salt of salicylideneglycine, A¹?=?bis(benzylidene)ethylenediamine, A²?=?bis (acetophenone)ethylenediamine, A³?=?di(2-pyridyl)amine, A⁴?=?bis(benzylidene)-1,8-diaminonaphthalene, A⁵?=?thiophene-o-carboxaldene-aniline, A⁶?=?thiophene-o-carboxaldene-p-anisidine, have been synthesized by the interaction of these ligands with vanadyl sulphate. The mixed-ligand complexes have been characterized on the basis of elemental analysis, magnetic measurements, electronic and infrared spectra. An octahedral structure has tentatively been assigned to all of the mixed-ligand complexes. The mixed-ligand complexes show higher toxic activity against the Salmonella typhi, Escherichia coli and Serratia mercescen as compared to the ligands, vanadyl sulphate and control (dimethyl sulphoxide). The mixed-ligand complexes were also tested against a standard drug (tetracycline).     

Synthesis,structural elucidation,electro-chemical behaviour and fungitoxic activity of transition metal(II) mixed-ligand complexes with some Schiff bases

The Schiff bases, potassium salt of salicylidene-β-alanine [KHL], bis(benzylidene)ethylenediamine [SB¹] and thiophene-o-carboxaldene-p-toluidine [SB²], and mixed-ligand complexes with Mn(II), Co(II), Ni(II), Cu(II), Zn(II), and Cd(II) have been prepared. They were characterized by elemental analyses, magnetic susceptibility measurements, thermogravimetric analyses (t.g.a.), infrared spectra and electronic spectra. The mixed-ligand complexes were found to have the general composition [M(L)(SB)(H₂O)]. All the mixed-ligand complexes were found to have six-coordinated octahedral geometry. The fungitoxic activity of the ligands, metal salts, control (DMSO), bavistin, emcarb, and mixed-ligand complexes were screened against Aspergillus niger, Fusarium oxysporum and Aspergillus flavus. All the mixed-ligand complexes show higher fungitoxic activity as compared to the Schiff bases, metal nitrate and control (dimethyl sulphoxide, DMSO), and moderate fungitoxic activity as compared to the fungicides (bavistin and emcarb).     

Microcontroller PIC 16F877A standard based on solar cooker using PV—evacuated tubes with an extension of heat integrated energy system

Environmental Science and Pollution Research - The unavailability of sunlight during nighttime and cloudy weather condition has limited the usage of solar cookers throughout the day. This study...     

Performance evaluation of using evacuated tubes solar collector,perforated fins,and pebbles in a solar still – experimental study and CO2 mitigation analysis

Environmental Science and Pollution Research - The combination of various methods of increasing evaporation rate can highly impact the performance of solar desalination. This investigation aims to...