The new Schiff bases are synthesis from various and aldehyde and amine under magnetic stirrer method .The synthesized Schiff base were characterized by spectral techniques (UV-Spectra & IR-Spectra). And the Schiff base are yellow colour solid and having sharp melting point and insoluble in organic solvents.

The introduction of the digestion method (the magnetic stirrer type) resulted directly in the reduction of Trichinella sp. infection among people in Poland. Pork and its products are still the main cause of human trichinellosis in Poland. However, epidemics caused by eating wild boar meat suggested that this way of the transmission of Trichinella sp. larvae to humans might be of considerable im...

A magnetohydrodynamic (MHD) stirrer that exhibits chaotic advection is investigated experimentally and theoretically. The stirrer consists of a circular cavity with an electrode (C) deposited around its periphery. Two additional electrodes (A) and (B) are deposited eccentrically inside the cavity on the bottom. The cavity is positioned in a uniform magnetic field that is parallel to the cylinde...

Cartesian Diver (1) and manometric (2) techniques have frequently been used to measure the respiration rates of nematodes. However, the sensitivity and ease of operation of the polarographic oxygen-sensing equipment currently available offers a technique of great future value to plant nema-tologists. Our recent experience with the YSI Model 53 Biological Oxygen Monitor (Yellow Springs Instrumen...

The significant characteristics of the electromagnetic environment in an ideal reverberation chamber are uniformity, isotropy and random polarization. Stirrer performance in a reverberation chamber is crucial to these characteristics. In this paper, based on the statistical theory, the uncertainty due to the number of independent samples is given. The key mechanism that causes the fields in a r...

Ferrite magnets have a long history. They are used in motors, magnetic fluids, drug delivery systems, etc. Herein we report a mesoscopic ferrite bar magnet based on rod-shaped ε-Fe2O3 with a large coercive field (>25 kOe). The ε-Fe2O3-based bar magnet is a single crystal with a single magnetic domain along the longitudinal direction. A wide frequency range spectroscopic study shows that the cry...

Microbial cells were disintegrated in a new type of rotary disintegrator with a disc stirrer by a combination of shear force layers, collisions, and rolling of glass beads which were brought into motion by the stirrer. The rate of disintegration at a given dry bed volume of Ballotini beads and a given volume of cell suspension is proportional to the peripheral velocity of the stirrer up to 18 m...

In this study, effective and easily accessible cheap catalysts that assist converting heavy oil residue to lighter products with high yield are investigated. Hydrocracking experiments were carried out in a 10 ml stainless steel bomb-type reactor up down stirrer at 200 times of reciprocation per minute. The catalyst mixture provided the minimum coke was FeSO4.H2O, binary mixtures FeSO4.H2O metal...