Pulses of darkness shift the phase of a circadian rhythm in an insectivorous bat

The circadian rhythm of a tropical insectivorous bat, Taphozous melanopogon, free-runs in dim light and responds to dark breaks of a few hours' duration with 'advances' and 'delays' as a function of the phase experiencing the "black out". Similarly phase shifts also follow perturbations by light breaks. The time course and the wave form of the phase response curves obtained from experiments using pulsed light and pulsed darkness are mirror images of each other

Equilibrium Studies on Cu(II) & UO2(II) Complexes of Isobutyric, β,β-Dibromoisobutyric & 4-Aminobutyric Acids

451-45

On Relativistic Wave Equation for Particles of Integer Spins

The representation given by Mathews to describe particles of integer spins is modified in such a way that the Hamiltonian does not contain the matrix Co which is a null matrix. An extreme relativistic limit of the modified Hamiltonian is also obtained

CONTROLLED ONBOARDING OF DEVICES IN A HIERARCHICAL TOPOLOGY THROUGH DETERMINISTIC IP ASSIGNMENT

Techniques are presented herein that support the controlled onboarding of switches that are arranged in a daisy chain or hierarchical topology. Aspects of the presented techniques support a deterministic Dynamic Host Configuration Protocol (DHCP)-based Internet Protocol (IP) address assignment based on the location of a client or device, thus making possible, and allowing the necessary control for, a hop-by-hop DHCP assignment paradigm. Further aspects of the presented techniques leverage elements of a zero-touch provisioning (ZTP) process in support of the onboarding of devices in a hierarchical topology

Psychopharmacological characterization of effects of Ferula asafoetida linn. formulation in mouse on a Y-maze, EPM, and open field apparatus

Background: Asafoetida is an herbal food supplement that has numerous peripheral pharmacological actions. Its central nervous system effects have not yet been completely elucidated in both animals and human participants. The study focuses on deciphering the effects of this Herbaceutical with that of Donepezil and vitamin C in mouse models of short term novelty object recognition memory and open field test.Methods: The study was conducted in two stages - a pilot stage which assessed the most effective dose of asafoetida on cognition, followed by a post-pilot study phase wherein its effects at that dose were compared with those of Donepezil and vitamin C. Novelty Preference Test (NPT) on y-maze and Open field test on Open field box were used to evaluate the effects of the formulation on memory and motor activity in mice.Results: A dose of 400mg/day of asafoetida orally was found to improve memory significantly in comparison to 200mg/day in mice. Asafoetida showed a greater potency in improving memory than Donepezil and vitamin C. After 11 days of daily treatment with Asafoetida commercial powder, more than fifty percent of the mice showed an increase in recognition index of 0.7-0.8 as compared to 0.55 at baseline.Conclusions: Asafoetida powder has nootropic efficacy in mouse model - this has to be explored mechanistically and pharmaceutically to enable the psychopharmacological characterization of the active principles and its pharmacological effects in the central nervous system

Thin Layer Chromatography of Pesticides and Their Residues

Recent progress in the analysis of organo-phosphorus, organo-chlorine, carbamate, urea, uracil pesticides and their residues by thin layer chromatorgraphic methods employing chemical and enzymatic methods is reviewed

Evaluation of sanguineous and crystalloid cardioplegic solutions during total heart-lung bypass in dogs

Twenty-four mongrel dogs were subjected to sanguineous and crystalloid cardioplegia for a period of thirty minutes at 20°C and 25°C systemic hypothermia during cardiopulmonary bypass. Cardioplegic solutions were administered at 4°C to induce cardioplegia. Physiological functions of the myocardium revealed that the cardiac function returned to normal sinus rhythm without any loss when blood cardioplegic solution was used at both hypothermic temperatures. The time taken for cardioplegia and cardiac electrical quiescence was achieved earlier at 20°C. Animals in sanguineous cardioplegic group revealed better functional return and revival of cardiac musculature in terms of lesser applications of defibrillator, lesser requirement of inotropic support and early cardiac contraction. This study revealed that sanguineous cardioplegic solution at a systemic temperature of 20°C was found to afford better myocardial protection during an arrest period of 30 minutes

Chlorophyll deficiencies in rice (Oryza sativa)

Nine types of Mendelian chlorophyll deficiencies consisting of both unicoloured and variegated forms have been described and their inheritance discussed. Some of these like the “zebra-marked”, lutescent and certain variegated forms are recorded for the first time in rice. A beginning was made to study the inter-relationships of these types and all possible crosses were made with the albino, virescent yellow and the green and white striped as the parents and studied up to the F3 generation. It was found that while each of the three different types behaved as a simple recessive to the normal green, crosses between any two of them gave green F1 plants segregating in F2 into green and the parental types in the ratio of 9:3:4 showing the interaction of two factors. The crosses have further shown that three pairs of factors (Ww, Vv and Gw gw) are concerned in the

Gratings and waveguides

Our immediate objective is to understand the limitations of guided-wave and grating coupler devices in their application to optical data storage. Our long-range goal is to develop and validate design codes for integrated optic devices. The principal research activity was in the development of numerical models for the design of a blue wavelength integrated optical source for data storage applications

Efficacy of indigenous Trichoderma isolates for the management of cumin wilt (Fusarium oxysporum f. sp. cumini) in Rajasthan

Sixteen Trichoderma isolates from soils under cumin, identified as Trichoderma harzianum, T. koningiopsis and T. asperllum showed variation in their colony morphology as well as degree of inhibition of Fusarium oxysporum f.sp. cumini. In the field experiment, all Trichoderma isolates were tested as seed treatment and soil application on cumin cultivar RZ 209. The result showed that T. asperllum (CuTa7-02, CuTa3-01), T. koningiopsis (CuTk7-01) and T. harzianum (CuTh9-02, CuTh3-03, CuTh8-01) significantly reduced wilt incidence (58-85%) and can be used as biological components in integrated management of cumin Fusarium wilt. &nbsp