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Dates for AuthorCall for Research Paper/Thesis Publication Call for PapersDec 2024 Volume 14, Issue 12 Send us manuscripts to: [email protected] ___________________ For UGC CARE, Scopus and Web of Science Publication: Whatsapp No.:+1 469-844-0367 |
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ISSN: 2320-0294 |
Volume 7, Issue 4(3) (April 2018 Special issue FBSA )
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Quantum Mechanical Behaviour of Fractional Harmonic
Oscillator in the Time Independent DomainMintu Debnath
Abstract: Quantum mechanical harmonic oscillators have been used to explain different complex phenomenon in physics. In this paper, fractional dimensional harmonic oscillator has been studied. We have considered nonlinear variation of potential with space. The time independent fractional Schrodinger equation has been investigated. Solutions of the fractional Schrodinger equation for different plausible fractional parameter are also critically examined. Download full Lenght Paper...... |
1-5 |
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Continuous Variation of Critical Exponents Out of Universality
Hypothesis
Prosenjit Sarkar
Abstract: We have shown, from magnetization measurements, that the critical exponents, β, γ and δ, associated with ferromagnetic to paramagnetic phase transition in (Sm1-yNdy)0.52Sr0.48MnO3 (0.5 ≤ y ≤ 1) single crystals vary continuously with Nd concentration. The critical exponents for y = 0.5 crystal were come out to be (β = 0.16, γ = 1.27 and δ = 9.30), which vary continuously with y and became (β = 0.36, γ = 1.38 and δ = 4.72) for y = 1. The critical exponents for y = 1 are very close to the exponents of Heisenberg model for three dimension. The simultaneous variation of all three critical exponents violated both universality and weak universality hypothesis, suggesting a novel critical behaviour Download full Lenght Paper...... |
6-10 |
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Derivation of pair correlation function from an equation of
weakly correlated plasma
Anirban Bose
Abstract: Plasma can be thought of as a many body system where coulomb interaction holds the key to determine its statistical nature . Lowering the temperature and raising the density of plasma gradually shifts the balance in a continuous manner so that the individual effects in the form of binary collision becomes important and drifts the system to the so called 'correlated plasma systems'. This is the regime where discrete nature of plasma begins to take effect. Consequently detail kinetic theory is needed to explore the system under consideration. In this context, an equation of pair correlation function has been derived from the Bogoliubov-Born-Green-Kirkwood-Yvon (BBGKY) hierarchy for inhomogeneous dusty plasma under certain approximations. A solution of this equation has been obtained under certain conditions Download full Lenght Paper...... |
11-16 |
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Origin of Hysteresis in Zinc Oxide Based Metal Oxide
Semiconductor Films
S. K. Nandi
Abstract: Zinc oxide is a unique material that exhibits semiconducting and piezoelectric dual properties. Interfacing of oxide and semiconductor materials provides a means of coupling unique properties associated with oxide materials to high performance semiconductor devices. To function at low biases to minimize power consumption, such devices must also contain a high-mobility semiconductor and/or a high-capacitance gate oxide. In this work we ovserve the crystal quality and composition of the deposited films with atomic force microscopy (AFM), scanning electron microscopy (SEM), Rutherford backscattering (RBS) and X-ray photoelectron spectroscopy (XPS) and electrical properties of SiO2/ZnO heterostructure, where SiO2 is used as oxide. Metal–Oxide–Semiconductor structures demonstrate hysteresis characteristic. The metal–SiO2–ZnO capacitor structures demonstrate a characteristic metal–insulator–semiconductor capacitance–voltage (C-V) behaviour with a hysteretic memory window of approximately 0.12 V. The appearance of a broad hysteresis and the significant shift in the flatband voltage indicate the presence of a large number of trapped charges at the interfaces. Download full Lenght Paper...... |
17-27 |
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DETECTION OF SOLAR BURSTS BY USING LPDA
Sankha Das
Abstract: The Log Periodic Dipole Array (LPDA), a broadband, multi-element narrow-beam antenna, is used conveniently for the reception of solar bursts over Kalyani (22°58´N, 88°46´E), W.B., India. Detection capability and use of Fast Fourier Transform (FFT) indicate the method as a decent alternative for categorizing solar bursts from a separation of radio frequency interferences. The dynamic pattern of solar corona is formed by condensed tubes of solar plasma and it is extremely structured. There are various kinds of transient phenomena happening on numerous time scales from hours to few milliseconds accompanying with the development of these condensed tubes of solar plasma. Observed from ~20 MHz up to near 10 GHz these bursts with characteristic time less than one second contain spikes, spike like, very small period regular or irregular pulsations, dips in radio emission, eruptions, zebra – pattern structures, etc. and this can be associated with some kind of procedure of energy release fragmentation. Specially solar flares are one of the classic active phenomena where magnetic energy deposited in these structures is converted into kinetic energy of highly accelerated charged particles through magnetic reconnection. Unique characteristic parameters of solar flares are its duration. Solar flares detected at radio frequencies (called bursts) within period less than one second can be a key to comprehend the elementary energy release procedure in flares Download full Lenght Paper...... |
28-35 |
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Design of High Q Fano Resonance Sensor in THz range
Amit Chandra Das
Abstract: A sharp Fano resonance in planar terahertz metamaterial is achieved by introducing a cut-wire resonator asymmetrically inside an annular ring resonator. The interference between the resonances arising from the cut-wire and annular ring gives rise to the high quality factor (Q=59) Fano type resonance enabling sensitive sensing (at 2.14 THz) in between 0.1 to 3 THz. Full wave EM simulations show frequency sensitivity of 0.08 THz per refractive index unit (RIU). Tuning of this Fano resonance has done by minute structural variations. The Fano peak can be efficiently modulated because of strong coupling between the incident THz wave and asymmetric ring resonator. Such sharp resonances could be exploited for chemical and biological sensing and detectors in Terahertz regime. Download full Lenght Paper...... |
36-40 |
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Micro-structure Selection in Solid-solid Transitions: A Review
Jayee Sinha
Abstract: Solid – solid phase transitions are invariably associated with group of particles whose deformations cannot be expressed as an affine strain about a reference configuration. Using molecular dynamics simulations, we study the nucleation dynamics and microstructure selection in a model two-dimensional solid undergoing a square to rhombic transformation. The microstructure selection depends on the depth and rate of quenching. The nucleation process is initiated by the appearance of distinct dynamical heterogeneities. It is observed that the dynamics of the non - affine zones (NAZs) determine the subsequent growth of the microstructure within the parent solid. The nature of particle trajectories in the active regions show an abrupt transition from ballistic to diffusive behaviour which remarkably coincides with the sharp and discontinuous transition from a twinned martensite to a ferrite microstructure. The active particles exhibit intermittent jamming and un-jamming. At low temperatures, single particle diffusion is suppressed and the transformation proceeds through string – like correlated excitations, giving rise to the twinned martensite nuclei. These excitations flow along ridges in the potential energy topography set up by the inactive particles. At higher temperatures, the trajectories of the particles show the transition from ballistic to diffusive nature giving rise to the ferrite nuclei. Download full Lenght Paper...... |
41-48 |
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Magnetic Barkhausen Noise in amorphous Fe73.5Cu1Nb3Si13.5B9
nanocrystalline ribbons
Suman Sinha
Abstract: Magnetic Barkhausen Noise (MBN) measurements were performed on the as-quenched and annealed (heated at 540oC for 1 hour) Fe73.5Cu1Nb3Si13.5B9 nanocrystalline ribbons. These amorphous nanocrystalline ribbons (commercially named FINEMET) gradually change from amorphous to nanocrystalline phase on heat treatment around their crystallization temperature. We have studied this phase transformation in these ribbons using MBN technique. The two peaks of the MBNenvelope (which characterizes the MBN activity) for the annealed sample corresponds to the nanocrystalline and amorphous phase. The axial hysteresis loops of the samples were measured up to a maximum field of 2000 Oe. The phase structure of both as-quenched and annealed samples was verified by XRD measurements. Download full Lenght Paper...... |
49-53 |
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The study of non-maximally entangled mixed states(NMEMS)
in atom-photon interactions
Biplab Ghosh
Abstract: The arena of atom-photon interactions is a vast and potentially useful physical domain for implementing quantum information protocols. Entanglement has been widely observed in quantum optical systems such as cavity quantum electrodynamics. The study of several facets of quantum entanglement generated in atom-photon interactions is very important with the viewpoint of obtaining interesting and useful applications in real physical processes and devices. In this paper we investigate the non-maximally entangled mixed states and the entanglement properties of a pair of two-level atoms going through a cavity environment one after another. The initial joint state of two successive atoms that enter the cavity is separable. Interactions mediated by the cavity photon field environment result in the final two-atom state being of a non-maximally mixed entangled type which are known as entangled mixed states (NMEMS). We consider the Fock state field and thermal field inside the cavity, and calculate the entanglement of formation EF, the well known measure appropriate for mixed states, of the joint two-atom state as a function of the Rabi-angle gt. The utilities of such generated NMEMS in quantum information processing tasks can be very important and studied further. Download full Lenght Paper...... |
54-61 |
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Influence of Rate Constant on TF Regulated Gene Expression
and Effect of Noise
Enakshi Guru
Abstract: Simple mathematical model of gene expression had been studied thoroughly in this paper. It was assumed that protein synthesis and protein decay were deterministic in nature whereas transition from active to inactive state was totally stochastic. The probability distribution function of TF regulated gene was calculated and evidence of binary and graded response had been observed for different reaction rates. Slow and fast kinetics had been studied explicitly for diierent values of rate constants. Different rate constants played a significant role in calculating distribution function (PDF) and mean value of protein expression in TF regulated gene expression. A small change in the value of the rate constant gave a significant change in average protein value. It was seen that rate constants control the variance as well. The randomness of gene expression was reduced with increasing value of one of the rate constants. Download full Lenght Paper...... |
62-69 |
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Relativistic Accretion and Wind Flows around Rotating Black
Holes
Soumen Mondal
Abstract: In this communication, we study the relativistic hydrodynamics of accretion and wind flows around rotating black holes and investigate the possibilities of shocks in the flows. We find that shocks are possible in the presence of the two saddle type sonic points in the flow. This happens for the choice of constant ultra-relativistic adiabatic index γ = 4/3 or close to it. However, employing the relativistic equation of state(EOS) [7] in which the adiabatic index γ varies smoothly from 5/3 to 4/3 the non relativistic to relativistic regime with temperature we notice that number of the saddle type sonic point reduces to one [1][2] indicating that the possibilities of formation of shocks in the flow becomes rare [1][ 8]. Download full Lenght Paper...... |
70-73 |
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Elongation Factor-1 from Leishmania donovani in liposomes
promotes protective immunity against visceral leishmaniasis via
polarized Th1 response
Sudipta Bhowmick
Abstract: TVisceral leishmaniasis (VL) is life-threatening, and development of a safe and effective vaccine has been an essential aim for controlling the disease. In the present study, Elongation factor-1 (EF-1) of Leishmania donovani was purified from soluble leishmanial antigens. EF-1 adjuvanted with cationic liposomes exhibited significant resistance against L. donovani in both livers and spleens of BALB/c mice challenged 10 days after last vaccination. Analysis of cytokines in protected mice revealed induction of Th1 cytokines IFN- with IL-12 with a down-regulation of Th2 cytokines IL-4 along with immunosuppressive IL-10, hinted toward a Th1 polarized immune response instrumental for protection. Thus, EF-1, a vaccine candidate antigen from L. donovani can be a potential component of future antileishmaniasis vaccines. Download full Lenght Paper...... |
74-79 |
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Identifying causal genes for Amyotrophic Lateral Sclerosis
(ALS) by Meta Analysis of Gene Expression Data
Uttiyo Silroy,Ankur Bhowal
Abstract: Amyotrophic lateral sclerosis (ALS) is an idiopathic, fatal neurodegenerative disease characterized by progressive muscular paralysis reflecting degeneration of upper andlowers motor neurones in the primary motor cortex, corticospinal tracts, brainstemand spinal cord. Analysing multiple microarray data from multiple studies available in public database such as GEO (Gene Expression Omnibus) database is more effective and will give hint to more detailed gene-gene interaction patterns that is particularly more helpful in Identifying novel genes as disease biomarker or identifying regulatory pathways for further in depth functional study. Present study attemps to identify genes associated with ALS by meta analysis of published gene expression data. Download full Lenght Paper...... |
80-83 |
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PARENTAL CARE OF STRAY DOGS IN SOUTH PART OF
ASANSOL CITY UNDER PASCHIM BARDHAMAN
DISTRICT OF WEST BENGAL
Tushar Banerjee
Abstract: Parental care assumes an essential part in the advancement of the youthful in mammals. Indeed, even in species where mothers don't give care as lairs and security, mothers suckle their posterity, from birth to weaning. Stray dogs in India have a dynamic social framework and, not at all like their agreeably rearing progenitors, the dim wolves, have all grown-ups in a dog bunch had parallel mating openings. This on occasion prompts the introduction of different litters inside the stray dog gatherings. In this paper, we report the primary field perceptions of parental care made on a stray dog bunches where in the south part of Asansol city of West Bengal. The parental care went about as a supplement to the care gave by the mother, and was along these lines gainful to the pups. This study reaffirms the fact that quality of time spent in active parental care goes in south direction as the pups grew between 8 to 12 weeks and started supporting themselves Download full Lenght Paper...... |
84-90 |
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Exposure to isoflavones in diet is not good for reproductive
health of premenopausal women ---- A short review.
Indraneel Saha
Abstract: Isoflavones, plant secondary metabolite, abundant in Soy (Glycine max) are genistein, daidzein and glycitein. They bind to and activate intracellular estrogen receptors: ERα and ERβ mimicking the effects of estrogen. Estrogen-like effects have raised concern regarding soy/isoflavones consumption particularly in the case of postmenopausal women at high risk of breast cancer. It causes an increase in estrogen which stimulates the uterus in a continuous manner and inhibits implantation which can lead to sub fertility or infertility. Increased estrogen signaling in ovary would most likely result in the negative feedback action of estrogen which reduces ovulation. It has been found that soy intake in human causes a decrease in midcycle gonadotropins, increased cycle length, abnormal uterine bleeding, endometrial pathology, dysmenorrheal, lower estradiol and progesterone and serum hormone binding globulin (SHBG). The review dealt with the effect of isoflavones on female reproductive system particularly Download full Lenght Paper...... |
91-93 |
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Unusual Binding Properties of B-ring Analogs of Colchicine
Controlled by B-ring Side Chain
Lalita Das,Bhabatarak Bhattacharyya
Abstract: In this study, we have shown that quantum yield, fluorescence property, activation energy and pH dependence of aminocolchicinoids binding with tubulin are controlled at different points of B-ring and its side chain at C-7 position. The substituent at the C-7 position of the B-ring seems to dictate the relative quantum yield of the colchicinoid-tubulin complexes. We synthesized two compounds, NHCSCH3-DAAC and in NHCH2COCH3- DAAC. Mechanism of induction of fluorescence was elaborately discussed with these compounds. From the X-ray structure of tubulin-damacolchicine complex, it is known that A- and C-ring of colchicine bind at -tubulin whereas C-7 side chain of B-ring interacts with -tubulin. Here we have shown that although the colchicinoid molecules bind essentially at -tubulin, -C-terminus has no role on colchicinoids binding with tubulin. But binding is significantly less for both C-termini depleted tubulin (ss), which can be explained by a inter-subunit communication through the ‘tail-body’ interaction. Moreover, we observed that the activation energy of NHCSCH3- DAAC and NHCH2COCH3-DAAC are low and independent of pH. Under identical conditions, the activation energy of N(Me)COCF3-DAAC is high, like colchicine and shows pH dependency. The addition of acetyl group in colchicine causes dramatic decrease in off-rate constant from DAAC. These results indicate that the oxygen atom plays a very significant role which is still unknown to us. It may also possible that the amino and carbonyl groups of B-ring side chain are involved in making important contacts with protein in complex form. Download full Lenght Paper...... |
94-104 |
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Assessment of reproductive toxicity in Monocrotophos
(organophosphate pesticide) - exposed Nile tilapia (Oreochromis
niloticus) sperm using Biochemical assays and CASA-based
sperm kinematics Dr. Silpi Acharyya
Abstract: The invention of persistent organic pesticides proved to be a great boon for human civilization by controlling harmful disease vectors and increasing agricultural yield many folds. However, in recent years, scientists have become increasingly worried about the way these harmful chemicals have affected the environment posing great threats to millions of non-target animals, plants and even humans. Amongst these chemicals the organophosphorus pesticides have made the ecotoxicologists more anxious because of their persistent nature and fast rate of absorption in tissues of living organisms. In this study, one such non-target organism – Nile tilapia (Oreochromis niloticus) was used to assess the reproductive toxicity of one the most extensively used organophosphate pesticides – Monocrotophos. This study focuses on the impact of Monocrotophos exposure on two of the most important sperm quality parameters – sperm viability and sperm membrane integrity. Results of these biochemical analyses were confirmed with sperm motility assessment data obtained from kinematic study using Computer Aided Semen Analysis (CASA). Statistical analysis of the result obtained from the biochemical study indicates a strong positive linear correlation (r = 0.968) between these two sperm parameters (viability and membrane integrity), moreover significant deviations were also observed in the mean values of percent viability (P < 0.001), as well as percent membrane integrity (P < 0.001) following exposure to sub lethal dose (4mg/l) of Monocrotophos for a fixed duration (15 mins.), when compared with the control set. Among all the parameters considered in CASA results, only curvilinear velocity (VCL) exhibited a significant decline (P < 0.001) in the mean values of Monocrotophos - exposed group when compared with the unexposed group. The other parameters did not show significant changes in either group. Viability, overall membrane integrity and motility are some of the most important sperm parameters required for the sperm to successfully fertilize the egg. Monocrotophos exposure not only seemed to affect viability and sperm membrane-integrity but sperm motility parameters were also shown to be affected as analyzed by sperm motion kinetics Download full Lenght Paper...... |
105-111 |
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Bioremediation of phosphate solubilising bacteria isolated from
the nearby areas of Sundarban
Biswajit Saha,Aparna Sen
Abstract: Phosphate solubilizing bacteria (PSB) enhances phosphorous availability in soils through dissolving inorganic P pool. Microbial biodegradation is the use of bioremediation & biotransformation methods to harness the naturally occurring ability of microbial xenobiotic metabolism to degrade, transform or accumulate environmental pollutants, including hydrocarbons such as oil, polyaromatic hydrocarbon (PAH), metals etc. Biological processes play a major role in the removal of contaminants & take advantage of the catabolic versatility of microorganisms to degrade or convert such compounds. In this study we have isolated three prominent phosphate solubilising bacteria that also have different hydrocarbon degrading property. PSB were screened on Pikovskaya Agar media. The efficiency of different PSB isolates for phosphate solubilization was evaluated from the zone they formed on agar plates of PVK by solubilising the tri calcium phosphate of the medium. Hydrocarbons of different origin like petrol, diesel, kerosene etc were used in 1% concentration in Bushnell Hass media to determine their degradation capabilities. Different microbiological & biochemical test were performed to determine the optimum condition required for microbial growth. The results of this phosphate solubilization & hydrocarbon degradation are encouraging & need to be confirmed under field condition Download full Lenght Paper...... |
112-119 |
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A Cattle Pathogen Mycoplasma bovis : A Review
Sonali Saha,Gargi Saha Kesh
Abstract: Mycoplasma bovis was first isolated in the USA from the milk of a mastitic cow in 1961. It is the most important pathogenic bovine mycoplasma mainly causing pneumonia, arthritis, mastitis. The organism is usually transmitted by close and repeated contact over short distances; untreated infected milk can also be a source of infection to calves. Transmission may also be via shedding of the pathogen through external mucosal surfaces of an infected animal. They are quite resistant to environmental conditions thus, can transmit through fomites and milking equipments. Classically diagnosis was depended on the use of selective culture media and prolonged incubation in an environment enriched with CO2. Recently, some alternative to culture methods, like, PCR based techniques have evolved. Disease associated with M. bovis is often chronic, enfeebling, and poorly responding to antimicrobial therapy. Thus this cattle born disease causes significant economic loss. Till now, vaccines for M. bovis are unavailable. So, the remaining approaches to control these infections are sanitary control measures and antimicrobial treatment. The aim of this review is to summarize the current knowledge regarding the clinical signs of the diseases caused by M. bovis . Various diagnostic approaches used in detection of M. bovis, the prevention and the controlled measures are discussed. Download full Lenght Paper...... |
120-124 |
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Antimicrobial potential of marine cyanobacteria collected from
the West Bengal coastal region of India against multiresistant
microorganisms
Prasenjit Das
Abstract: This study focuses on some cyanobacteria collected from the Bakkhali, a coastal town of West Bengal, India. The aim of this study was to investigate the antimicrobial potential of some marine cyanobacteria against some standard microorganisms. The sample extracts were tested against four standard multiresistant bacteria and a fungi such as Escherichia coli, Staphylococcus aureus, Pseudomonas aeruginosa, Bacillus subtilis, Klebsiella pneumoniae and Aspergillus niger. Cyanobacterial extracts have shown varied levels of antimicrobial properties with Calothrix sp. being the most effective as evidenced from MIC and MBC values. These findings are encouraging for further investigation for discovery of new therapeutic agents. Such information may also be of great use in disclosing new sources of already known biologically active compounds Download full Lenght Paper...... |
125-128 |
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The non-biting midge species, Chironomus striatipennis Kieffer
(Diptera: Chironomidae) as a potent bio-indicator in water
quality assessment
Parantap Sarkar
Abstract: The non-biting midge species occupy several aquatic habitat including lakes, ponds, rivers and man-made habitats e.g. sewage and water treatment plants etc. Majority of the species exhibits tolerance to pollution. Several heavily polluted aquatic habitats encompassing industrial establishments in West Bengal were explored for pollution considering the presence of heavy metals as Pb, Cd, As and Cu. All the habitats were inhabited by Chironomus striatipennis Kieffer. The fourth instar larvae of the species collected from the sites were investigated for their morphological features and salivary gland polytene chromosomes. The studies indicated that deformities appeared in several phenotypic characters and polytene chromosome of the larvae. These abnormal features of Chironomus larvae were in response to the heavy metal pollution in their habitats. C. Striatipennis larvae were reared in the artificially created polluted laboratory environment. Investigation revealed that the appearance of deformities of various structure and the aberrations along polytene chromosome arms. Thus the response of C. striatipennis Kieffer larvae in polluted habitats appeared to be in consistency with the response of the larvae of the species in the laboratory. Therefore, the larvae of the species of Chironomus acted as potent bio-indicator to detect the presence of heavy metals in the environment Download full Lenght Paper...... |
129-138 |
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© 2011 All Rights Reserved to International Journals of Multidisciplinary Research Academy ijmra.us.
This work is licensed under a Creative Commons Attribution- 3.0 Unported License.