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magnetism 2

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belt transmission 1

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Synthesis of iron(II) complexes with asymmetric N

Wolfgang Bauer, Tanja Ossiander, Birgit Weber

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3, Pages 400-408 doi: 10.1007/s11705-018-1753-4

Abstract:

The synthesis of new Schiff base-like ligands with asymmetric substituents pattern and their iron complexes with pyridine as axial ligand is described. Two of the ligands and one of the iron(II) complexes were characterized by single crystal X-ray structure analysis. One of the the iron(II) complexes shows spin crossover behavior while the others remain in the high spin state. The influence of the reduced symmetry of the ligand on the properties of the complexes is discussed.

Keywords： iron Schiff base-like ligands magnetism spin crossover X-ray structures

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Analysis of Influencing Factors on Transmission Ratio in Magnetic Metal Belt Transmission

Luo Shanming,Miao Xiexing

Strategic Study of CAE 2002, Volume 4, Issue 3, Pages 73-77

Abstract:

Magnetic metal belt transmission is a new one in which the initial tension no longer solely, but together with the magnetic attraction force produces the friction force. The influencing factors on transmission ratio are analyzed and numerically simulated in this paper, such as effective haulage force, initial tension, magnetic induction intensity, center distance, diameter of the smaller belt pulley and angle of contact. The change laws of transmission ratio along with these influencing factors are studied. The results show that the transmission ratio of magnetic metal belt transmission increases when magnetic induction density, initial tension and center distance increases, and decrease when angle of contact and diameter of the smaller belt pulley increases. It is pointed out that the angle of contact and diameter of the smaller belt pulley can be reduced accordingly because of the effect of magnetic force, and therefore the transmission ratio can increase by 3〜4 times compared with general belt transmission.

Keywords： belt transmission magnetism metal belt transmission ratio