3,3-Dimethyl-cis-2,6-di-p-tolyl­piperidin-4-one

In the title mol­ecule, C21H25NO, the piperidine ring adopts a chair conformation. The benzene rings and one of the methyl groups attached to the piperidine ring have equatorial orientations. The dihedral angle between the two benzene rings is 72.53 (9)°. In the crystal, mol­ecules are linked by N—H⋯O hydrogen bonds. Weak C—H⋯π inter­actions involving the benzene rings are also present in the crystal structure

Antidiabetic potential of Lantana aculeata root extract in alloxan-induced diabetic rats

The present study investigates the antidiabetic potential of dried mature roots of Lantana aculeata, a weed belonging to verbenaceae family on biochemical profile in alloxan-induced diabetic rats. The effects of an ethanolic extract of the dried mature roots of Lantana aculeata on serum glucose, total cholesterol, triglycerides, plasma insulin and liver glycogen were examined in control and experimental groups. Lantana aculeata root extract reduced the serum glucose concentration at 24, 48 and 72 hours. To verify the activity sub-chronically, the extract administered orally in the doses of 25, 50 and 100 mg/kg to diabetic rats for 30 days, that significantly reduced the level of glucose, total cholesterol and triglycerides with an increase in insulin and glycogen concentration to near normal levels in a dose-dependent manner. The results indicate that roots of Lantana aculeata possess antidiabetic potential in alloxan-induced diabetic rats. The activity might be due to high concentration of oleanolic acid present in the roots.Keywords: Antidiabetic activity, Lantana aculeata roots, Oleanolic aci

SVPWM CONTROLLED PERMANENT MAGNET SYNCHRONOUS MOTOR

Multilevel inversion is a power conversion strategy in which the output voltage is obtained in steps. In recent years, the multilevel inverters have drawn tremendous interest in the area of high-power medium-voltage energy control. Several modulation and control strategies have been developed or adopted for multilevel inverters including the following multilevel Sinusoidal Pulse Width Modulation (SPWM), and Space Vector Modulation. In this paper simulation of SVPWM are applied for performance analysis of PMSM using voltage source inverter. The THD and speed torque analysis for PMSM are simulated using MATLAB simulink

A special schedule of foliar application of nutrients for the tea fields under extensive mechanized harvesting

To overcome the problem of acute shortage of work force faced by the south Indian tea industry, UPASI Tea Research Institute recommends mechanized harvesting to cover large areas with high worker productivity. While adopting extensive mechanized harvesting, total leaf area of the maintenance foliage on the plucking surface is reduced. As a result growth of the crop shoots has been adversely affected leading to reduction in productivity. Excessive banji shoot formation and nutrient deficiency symptoms were also noticed. To overcome all these adverse impacts of extensive mechanization, foliar application of primary, secondary and micro-nutrients has been attempted. The practical utility of foliar feeding of all these nutrients when applied as a mixture after every harvest, except during continuous heavy rainy months, showed an increase in yield up to 21% compared to the current recommended practice, in spite of extensive harvesting using shears and machines. The problem of dwarfing of crop shoots due to extensive shear/machine harvesting could be minimized due to increase in internodal length by 0.87 cm and the dry weight of the crop shoots increased by 0.09 g/shoot. Excessive production of banji shoots also came down from 65 to 52%