Stannoxanes and phosphonates: new approaches in organometallic and transition metal assemblies

Phosphonate ligands, [RPO3]2-, are extremely versatile in the assembly of multi-tin and multi-copper architectures. We have used organostannoxane cores for supporting multi-ferrocene and multi-porphyrin peripheries. The copper-metalated multi-porphyrin compound is an excellent reagent for facile cleavage of DNA, even in the absence of a co-oxidant. Reaction oft-BuPO3H2 with Cu(C104)2. 6H2O in the presence of 2-pyridylpyrazole (2-Pypz) leads to the synthesis of a decanuclear copper (II) assembly

TARGETED DRUG DELIVERY PLATFORM COMPRISING MESOPOROUS SILICA NANOPARTICLE AND BIODEGRADABLE COPOLYMER

??? ????????? ?????? ?????? ???????????? ??????????????? ??????????????? ????????? ?????? ????????? ?????? ?????? ?????? ?????? ????????? ????????????. ??????, ??????????????? ??????????????? ????????? ????????? ???????????? ????????? ???????????? ??????????????? ???????????? ??????, ?????? ???????????? ??????????????? ???????????? ???????????? ????????? ????????? ????????????????????? ???????????? ?????? ????????? ??????????????? ????????? ?????? ?????? ????????????????????? ??????????????? ???????????? ????????? ??? ??????.clos

An Experimental Study on the Performance, Combustion, and Emission Characteristics of a Direct-Injection Diesel Engine Fueled with Various Blends of Camelina Sativa Biodiesel

Recently, the utilization and research of biodiesel has become increasingly popular due to its reduced emissions, lower cost, and potential for achieving energy independence. A promising application of biodiesel is in diesel engines, where it can be used as a substitute for traditional petroleum-based diesel fuel. Camelina sativa is an oil seed crop with prospective uses in biodiesel extraction due to its high crop harvest in a year, good net energy ratio, the considerable oil content in its seed, and lower oil extraction expenses. Biodiesel derived from camelina sativa L. is prepared via transesterification. In this study, the prepared biodiesel is blended with diesel at various proportions and is used in an engine to investigate its combustion performance and emission characteristics. From the results, it is evident that the CMB 20 blend (20% of camelina biodiesel and 80% of diesel) shows the better performance among all of the blends used. The brake thermal efficiency of CMB 20 is 23.45%, its specific fuel consumption is 0.355 kW/kg hr, and it also produced less emissions when compared to other blends

Mononuclear metal phosphinates with ancillary pyrazole ligands. Synthesis and X-ray crystal structures of [M(Ph<SUB>2</SUB>PO<SUB>2</SUB>)<SUB>2</SUB>(3,5-DMPZ)<SUB>2</SUB>] (M = Co, Zn)

The reaction of diphenylphosphinic acid, [Ph<SUB>2</SUB>P(O)(OH)], with CoCl<SUB>2</SUB> or ZnCl<SUB>2</SUB> and 3,5-dimethylpyrazole (DMPZ) in the presence of triethylamine affords the mononuclear phosphinates, M(Ph<SUB>2</SUB>PO<SUB>2</SUB>)<SUB>2</SUB>(DMPZ)<SUB>2</SUB> (M= Co(1), Zn(2)). The molecular structures of 1 and 2 reveal a tetrahedral environment around the metal. The phosphinate ligands are monoanionic and bind to the metal in a monodentate manner, while the pyrazole ligands act as neutral monodentate ligands. Intermolecular C-H-O and p-p interactions in 1 and 2 result in the generation of two dimensional supramolecular polymeric sheets in the solid state