The conventional solvent extraction (CSE) method is commonly used to extract oil from oilseeds. Even though the of soybean seeds using CSE has been studied extensively, application response surface methodology (RSM) not yet widely explored. In this paper, was employed three different types solvents – ethanol (Eth), n-hexane (Hex), and a mixture Hex:Eth in ratio 2:1 optimized RSM Cambodian seeds...

Complexes of Co(iii) containing mixed chelating diimine and o-quinone ligand sets are of fundamental interest on account of their fascinating magnetic and electronic properties. Whilst complexes of this type containing one diimine and two o-quinone ligands have been studied extensively, those with the reverse stoichiometry (two diimines and one o-quinone) are much rarer. Herein, we describe a r...

High-precision nitrogen NMR shieldings, bulk susceptibility corrected, are reported for dimethyl-N-nitrosamine (I) and diethyl-N-nitrosamine (II) in a variety of solvents which represent a wide range of solvent properties from the point of view of polarity as well as hydrogen bond donor and acceptor strength. The observed range of solvent-induced nitrogen shielding variations of (I) and (II) is...

Implicit solvation is a mean force approach to model solvent forces acting on a solute molecule. It is frequently used in molecular simulations to reduce the computational cost of solvent treatment. In the first instance, the free energy of solvation and the associated solvent-solute forces can be approximated by a function of the solvent-accessible surface area (SASA) of the solute and differe...

This paper describes the development of a method to calculate the overall "greenness" of a pharmaceutical process that uses multiple solvents. This calculation is made by taking into account various environmental parameters and determining an overall greenness index. Through this method a scientist or engineer can effectively determine alternative, "greener" solvents or processes based on the u...

Abstract An integrally skinned organic solvent-resistant membrane with asymmetric structure for solvent nanofiltration (OSN) application was developed via thermally induced phase separation (TIPS) of nanocomposite polyamide 6. The 6 contains intercalated silicate sheets, which could improve the mechanical properties resultant membrane, as well mitigate swelling after exposure in solvent. influe...

the equilibrium constant of adduct formation between some triorganotin chloride of the type r3sncl (r=c6h5, p-ch3c6h4, n-ch3)ch2)3, c6h5-ch2 and lewis bases cl¯, br¯, and i¯, were measured in 50% v/v ethanol-water solvent spectrophotometrically. the average equilibrium constant values for the systems studied shows the following acceptor trend of tin(iv) in the triorganotin chlorides: p-tolyl > ...

the oil content of the wax produced in a dewaxing process is the key economic parameter thatshould be reduced as much as possible. some factors such as the type of solvents, cooling rate,temperature, and solvent to oil ratio influence the dewaxing process. due to the fact that crude oildiffers from place to place and since the operational conditions for wax extraction vary for differenttypes of...

We study the photodetachment of electrons from sodium anions in room temperature liquid tetrahydrofuran (THF) using a new type of three-pulse pump-probe spectroscopy. Our experiments use two variably-time-delayed pulses for excitation in what is essentially a resonant 1+1 two-photon ionization: By varying the arrival time of the second excitation pulse, we can directly observe how solvent motio...