Hislop College

Nāgpur, India

Hislop College

Nāgpur, India
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Kadoo M.R.,Hislop College | Badere R.S.,Hislop College
Physiological and Molecular Plant Pathology | Year: 2017

Present paper reports induction of chitinases and β-1,3 glucanase in cucumber and chilli by the aqueous extract of the aerial parts of Azadirachta indica and Cleistanthus collinus. Efficacy of these extracts to induce the activity of chitinases and β-1,3 glucanase was concentration dependent. Similarly, magnitude of the enzyme activities also depended on the crop species and seedling part. Besides induction of enzyme activity, the extract of C. collinus and its fraction eluted with 90% methanol over silica gel 60–120 column modulated the expression of chitinase and β-1,3 glucanase isoforms. Phytochemical characterization of the extract of C. collinus and its 90% methanol fraction revealed several bioactive secondary metabolites, which might be active in influencing the activity of chitinases and β-1,3 glucanase. © 2017 Elsevier Ltd

Talwar G.J.,Hislop College | Moharil S.V.,R K N Engineering College | Joshi C.P.,Rashtrasant Tukadoji Maharaj Nagpur University
AIP Conference Proceedings | Year: 2016

Silicate phosphors doped with Eu2+ find application in solid state lighting, plasma display panel, liquid crystal display and long after glow. In present work long lasting silicate phosphors are prepared by a modified combustion synthesis. The photoluminescence spectra and long lasting decay curves are measured. The Emission wavelength of Ba2MgSi2O7: Eu2+ is observed at 500?nm for excitation 345?nm.The emission wavelength of Ba2ZnSi2O7: Eu2+ is obtained at 496?nm at excitation 350?nm. Decay constants are calculated for both the phosphors. © 2016 Author(s).

Andrew R.J.,Hislop College | Foerster S.,Barnard College
Zoologischer Anzeiger | Year: 2015

A highly specialized form of egg deposition occurs in the dragonfly Micrathyria dictynna, which attaches egg-masses onto the underside of leaves high above shallow streams in Central American rainforests. Here, we describe the ultrastructure of the egg chorion of M. dictynna to reveal structural adaptations related to this unusual form of oviposition. We find that the egg chorion is generally divided into a thin, sticky exochorion and a tough, hard, smooth endochorion. The exochorion of eggs collected from the peripheral region of egg masses, however, shows a separation into outer and inner exochorionic layers. The space formed between these layers develops numerous pillars. In eggs collected from the area between the periphery and central region of an egg mass, the exochorion exhibits irregular interconnected patches of elevated areas containing very fine superficial linear reticulations. We propose that the exochorion of peripheral eggs is functionally modified to form a plastron that regulates respiration and restricts water loss of eggs in the inner layers of the egg mass. © 2014 Elsevier GmbH.

A total of 611 exuviae were collected within a period of 45 days during April-May, 2004 from the walls of an open cement drain at Nagpur, India. The daily record of this collection revealed that 50% of the total emergence was completed by the 14thday and the sex ratio is considerably in favour of o♂ o♂(1.4:1). The ♀ ♀ emerge earlier (protogyny) and the ME50 for ♀ and o♂ was observed on the 10th and 18th day, respectively. Protogyny probably provides adequate time for the 9 to develop her ovaries. 194 exuviae (31.75%) were collected from the north wall, which was completely in shade, and 417 (68.25%) from the south wall, which receives sunlight throughout the day. On the north wall, 44.7% exuviae were collected at a height of 30-45 cm from the water level, while from the south wall, 57.2% exuviae were collected at a height up to 15 cm and 28.4% between 15-30 cm. The present findings indicate that sunlight and temperature not only determine the choice of direction of the emerging larva but also initiate an early commencement of Stage I of metamorphosis (shortening the time between the surfacing of the larva and splitting its thoracic cuticle), which results in the shorter distance climbed by the larvae on the south wall for the final moult.

The egg of A. guttatus is endophytic and is cylindrical with a pointed anterior and a rounded posterior end. The chorion is divided into 2 layers, a thin, outer exochorion and a tough, thick, inner endochorion. The exochorion is modified anteriorly into a collar which is sculptured with 18-20 tiers of rectangular hexagonal impressions. Profound morphological and structural modifications are found in the eggs incubated in paper mill effluent for 5 days. The eggs became distorted due to swelling and the posterior rounded end became angular. The membranous exochorion degraded and transformed into thin, plate-like flakes which are shed, exposing the endochorion. The non-laminated, uniformly thick endochorion is converted into a laminated structure of overlapping plates with uneven thickness. The collar became pitted with minute perforations and started to disintegrate and detach from the egg and the hexagonal impressions became obliterated. 100% mortality was found in paper mill effluent treated eggs for 5 days, whereas eggs kept in pond water only had 10-13% mortality.

Longvah T.,National Institute of Nutrition | Toteja G.S.,Indian Council of Medical Research | Upadhyay A.,Hislop College
Food Chemistry | Year: 2013

Iodine deficiency disorders (IDD) is still a major public health problem and iodized salt remains the most effective means to control IDD in India. Few reports indicate that vegans have inadequate iodine intake while at the same time concerns are being raised on the implementation of universal salt iodization in the country. Therefore, we investigated the iodine content in bread, milk and commonly used Indian recipes prepared without iodized salt and the retention of inherent iodine therein. Results showed considerable iodine content in bread (25 μg/100 g) and milk (303 μg/L) as a positive fallout of universal salt iodization. Iodine content in 38 vegetarian recipes prepared without iodized salt was very low (2.9 ± 2.4 μg/100 g). Retention of inherent iodine (65.6 ± 15.4%) and iodine from iodized salt (76.7 ± 10.3%) in the same recipes was comparable. Thus, universal salt iodization programme remains the single most important source of dietary iodine for the Indian population. © 2012 Elsevier Ltd. All rights reserved.

Muktibodh P.S.,Hislop College
AIP Conference Proceedings | Year: 2013

The classical treatment of antimatter cannot be under taken by conventional mathematics as charge conjugation is anti-homomorphic at quantum level. Thus, anti-homomorphism or better anti-isomorphism is the basic requirement for new mathematics to be able to deal with antimatter. In this paper we introduce units, numbers and fields of Isodual mathematics from which all remaining formulations can be uniquely and unambiguously, derived via simple compatibility arguments. Isodual Functional analyses, Isodual differential and Integral Calculus are covered. It is found that Special Relativity is inapplicable for the classical treatment of anti-particles. Special relativity is also afflicted by the historical inability to represent irreversible processes. We have also considered the application of Isodual Mathematics in the field of Special Relativity. © 2013 AIP Publishing LLC.

Agrawal P.S.,Hislop College
European Journal of Scientific Research | Year: 2010

Densities, speed of sound and viscosity were measured for substituted isoxazole in different cosolvents like 70% DMF-water as well as 70% DMSO-water and 70% Chloroform-water medium at 293.15 K. A quantitative relationship has been established among the thermodynamic properties like acoustical impedance, sound velocity, internal pressure, adiabatic compressibilityetc. The results so obtained are very much comparable and are in good agreement. A molecular interaction study has also been made successfully in the light of these acoustical properties. © 2010 EuroJournals Publishing, Inc.

Longvah T.,National Institute of Nutrition | Toteja G.S.,Indian Council of Medical Research | Bulliyya G.,Regional Medical Research Center | Raghuvanshi R.S.,Gb Pant University | And 3 more authors.
Food Chemistry | Year: 2012

Universal salt iodisation programme is recognised as an economical, convenient and effective means of preventing iodine deficiency disorders (IDD). However, information on the retention of iodine during cooking is scant. Therefore this study was undertaken to investigate the retention of iodine from iodised salt when added to the most commonly used Indian recipes. The Mean ± SD retention of iodine in 140 of the most common Indian recipes was 60 ± 21%. The frequency distribution showed low retention (<20%) of iodine in 5.7% of the recipes, moderate retention (20-40%) in 15.7% while very high retention (>80%) was observed in 20%. Significant correlation (r = -0.194, P < 0.05) was observed between iodine retention and the time of iodised salt addition to the recipe. The retention of iodine was observed to be a minimum in shallow frying with oil (52 ± 23%) and a maximum in pressure cooking (82.2 ± 6.2%). The data generated in this study would usefully augment the negligible information regarding iodine retention in recipes. © 2011 Elsevier Ltd. All rights reserved.

Mortality during emergence was studied at an open drain in the city of Nagpur (central India). The total mortality rate (MR) was 10.92% (n = 686). Failure to moult (incomplete emergence state, MR = 4.8%) and failure to expand abdomen and harden wings for flight (complete emergence state, MR = 6.12%) were the two major reasons of mortality. The emerging dragonflies failed to moult and were found dead in the following conditions: cuticle of the thorax split and head and thorax of the pharate partly out of the exuviae (MR = 2.04%), head, thorax and wings out but the entire abdomen trapped in the exuviae (MR = 2.76%). After complete moulting some pharates were found floating, dead or completely exhausted in the water body. Some of the dead pharates had a curved telescopic abdomen and crumpled (MR = 0.44%), or stretched wings (MR = 2.33%), while others exhibited a straight, expanded abdomen and stretched overlapping (MR = 1.75%) or stretched spread wings (MR = 1.60%). Death due to overcrowding and predation was negligible. Statistical analysis revealed that mortality is independent of stage of emergence (P = 0.25).

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