Mimicking biomineralization under microgravity (2009)
Sinha, A, Gupta, A K, Pramanick, A K, Nayar, S, Gunjan, M K, Mishra, T, ...
Polymer matrix mediated synthesis of hydroxyapatite nanoparticles under microgravity has been carried out on-board during the flight of first recoverable space capsule (SRE-1) launched by Indian...
Extraction of PCR-usable DNA from trees adapted to arid environment (2009)
P Gahlot, A.K.Gupta, K Pareek, N.S.Shekhawat
Genetic conservation programs in arid natural repertoire rely on molecular methods for diversity assessments. Molecular characterization involves the use of high molecular weight genomic DNA as...
Vandana Dixit, Paramanand Baghel, A.K. Gupta, P.S. Bisen
Background & objectives: Bionomics and transmission dynamics of vector population are profoundlyinfluenced by local climatic conditions. The study monitored variations in density, infection...
Study on Optimal Buffer Size vs. Channel Width for On-Chip Interconnection Networks (2008)
A. K. Gupta, F. Labonte, P. W. Lee, A. Solomatnikov
Abstract. On-chip interconnection networks have different design constraints from traditional interconnection networks. Whereas channel bandwidth is highly available, the area, dominated by buffer...
Endovascular treatment of scalp cirsoid aneurysms (2008)
Gupta, A.K., Purkayastha, S., Bodhey, N.K., Kapilamoorthy, T.R., Krishnamoorthy, T., Kesavadas, C., ...
Background: Scalp is the most common site of soft tissue arteriovenous fistulae and surgical excision has been the primary mode of treatment. Endovascular treatment has evolved as an alternative to...
Analysis of 1/f Noise in Fully Depleted n-channel Double Gate SOI MOSFET (2008)
Kushwaha, Alok, Pandey, Manoj Kumar, Pandey, Sujata, Gupta, A.K.
An analysis of the 1/f or flicker noise in FD n-channel Double Gate SOI MOSFET is proposed. In this paper, the variation of power spectral density (PSD) of the equivalent noise voltage and noise...
Shear-strain-induced Spatially Varying Super-lattice Structures on Graphite studied by STM (2007)
Choudhary, S. K., Gupta, A. K.
We report on the Scanning Tunneling Microscope (STM) observation of linear fringes together with spatially varying super-lattice structures on (0001) graphite (HOPG) surface. The structure, present...
The role of tissue oxygen monitoring in patients with acute brain injury (2006)
Cerebral ischaemia is implicated in poor outcome after brain injury, and is a very common post-mortem finding. The inability of the brain to store metabolic substrates, in the face of high oxygen and...
Cretinon, L., Gupta, A. K., Sellier, H., Lefloch, F., Faure, M., Buzdin, A., ...
We studied the proximity effect between a superconductor (Nb) and a diluted ferromagnetic alloy (CuNi) in a bilayer geometry. We measured the local density of states on top of the ferromagnetic...
K. Singh, N. Jindal, S.L. Gupta, A.K. Gupta, D. Mittal
A total of 30 field samples (27 tissue samples comprising of either trachea, lungs or brain; and 3 allantoic fluid samples) were collected from broiler chickens for detection of Newcastle disease...
Use of RAPD and AFLP Markers to Identify Inter- and Intraspecific Hybrids of Mentha (2005)
Shasany, A. K., Darokar, M. P., Dhawan, S., Gupta, A. K., Gupta, S., Shukla, A. K., ...
Three controlled crosses were carried out involving Mentha arvensis and Mentha spicata [M. spicata CIMAP/C30 × M. spicata CIMAP/C33 (cv. Neera); M. arvensis CIMAP/C18 × CIMAP/C17 (cv. Kalka); and...
Use of RAPD and AFLP Markers to Identify Inter- and Intraspecific Hybrids of Mentha (2005)
Shasany, A. K., Darokar, M. P., Dhawan, S., Gupta, A. K., Gupta, S., Shukla, A. K., ...
Three controlled crosses were carried out involving Mentha arvensis and Mentha spicata [M. spicata CIMAP/C30 x M. spicata CIMAP/C33 (cv. Neera); M. arvensis CIMAP/C18 x CIMAP/C17 (cv. Kalka); and M....
The concept of drug delivery using magnetic nanoparticles greatly benefit from the fact that nanotechnology has developed to a stage that it makes possible not only to produce magnetic nanoparticles...
Sukumaran, D., Parashar, B. D., Gupta, A. K., Jeevaratnam, K., Prakash, Shri
The molluscicidal effect of nicotinanilide was evaluated and compared with niclosamide (2',5-dichloro-4'-nitrosalicylanilide, ethanolamide salt) against different stages of the freshwater snail...
Vein of galen malformations: Review (2004)
Vein of Galen malformations are unique congenital malformations of the cerebral vasculature that result in persistence and ‘aneurysmal’ dilatation of the venous structures. The varied clinical...
Moosa, A., Kishore, A., Gupta, A. K., Radhakrishnan, K.
Isolated intracranial hypertension is a common manifestation of intracranial sino-venous thrombosis (ISVT). Markedly elevated intracranial tension presents with unusual features including cranial...
Anomalous density of states in a metallic film in proximity with a superconductor (2003)
Gupta, A. K., Cretinon, L., Moussy, N., Pannetier, B., Courtois, H.
We investigated the local electronic density of states in superconductor-normal metal (Nb-Au) bilayers using a very low temperature (60 mK) STM. High resolution tunneling spectra measured on the...
Gupta, A.K., Berry, C., Gupta, M., Curtis, A.S.G.
Superparamagnetic iron oxide nanoparticles have been used for many years as magnetic resonance imaging contrast agents or in drug delivery applications. Tissue and cell-specific drug targeting by...
A. K. Gupta, R. Sinha, D. Koradia, R. Patel, M. Parmar, P. Rohit, ...
The Honey Bee Network has helped provide a sort of loose platform to converge creative, but uncoordinated individuals across not only Indian states having varying cultural, linguistic and social...
On a zonal polynomial integral (2003)
A certain multiple integral occurring in the studies of Beherens-Fisher multivariate problem has been evaluated by Mathai et al. (1995) in terms of invariant polynomials. However, this paper...
Effects of propofol on cerebral oxygenation and metabolism after head injury (2003)
Johnston, A. J., Steiner, L. A., Chatfield, D. A., Coleman, M. R., Coles, J. P., Al-Rawi, P. G., ...
Background. Flow‐metabolism coupling is thought to be deranged after traumatic brain injury, while the effects of propofol on flow‐metabolism coupling are controversial. We have used a step...
Cerebral oxygen vasoreactivity and cerebral tissue oxygen reactivity{dagger} (2003)
Johnston, A. J., Steiner, L. A., Gupta, A. K., Menon, D. K.
There has long been an appreciation that cerebral blood flow is modulated to ensure adequate cerebral oxygen delivery in the face of systemic hypoxaemia. There is increasing appreciation of the...
Jauhari, H., Chowey, P.K., Narani, K.K., Gupta, A.K.
Introduction &c Objective: A 34 yrs. old male on conservative management for many years for refractory ITP 8c Chronic Renal Failure (CRF), reached ESRD in early 2001. He now needed a Renal Transplant...
Infrasellar Craniopharyngioma Mimicking a Clival Chordoma : A Case Report (2002)
Kachhara, R., Nair, S., Gupta, A. K., Radhakrishnan, V. V., Bhattacharya, R. N.
An unusual case of entirely infrasellar craniopharyngioma mimicking a clival chordoma is described. Only 22 cases of craniopharyngioma with nasopharyngeal extension have been reported in the...
Effect of hypothermia on brain tissue oxygenation in patients with severe head injury (2002)
Gupta, A. K., Al-Rawi, P. G., Hutchinson, P. J., Kirkpatrick, P. J.
Background. There is renewed interest in the use of induced hypothermia as a method of neuroprotection both intraoperatively and in the intensive care management of severe brain injury. In this study...
Retention of foetal membranes in a female camel (2000)
Sharma, Rajiv, Purohit, G.N., Garg, N., Duggal, G.P., Gupta, A.K., Vyas, S., ...
A case report of retention of after birth (Placenta)in female camel aged six years have been reported. The female had history of normal parturition twenty hours back, birth of a live male calf and...
Search for Quark-Lepton Compositeness at Tevatron and LHC (2000)
Jain, S, Gupta, A K, Mondal, N K
We make a Monte Carlo study on compositeness of first generation quarks and leptons using the Drell-Yan distribution in the high dielectron mass region at the Tevatron and LHC energies. The current...
To every integer monic polynomial of degree m can be associated a `replacement rule' that generates a word W* from another word W consisting of symbols belonging to a finite `alphabet' of size 2m....
Non-invasive measurement of cerebral blood volume in volunteers (1997)
Gupta, A. K., Menon, D. K., Czosnyka, M., Smielewski, P., Kirkpatrick, P. J., Jones, J. G.
MELLUSO, L., BECCALUVA, L., BROTZU, P., GREGNANIN, A., GUPTA, A. K., MORBIDELLI, L., ...
The late Cretaceous-early Tertiary flood basalts in the Gujarat area of the northwestern Deccan Traps (Kathiawar peninsula, Pavagadh hills and Rajpipla) exhibit a wide range of compositions, from...
Epidemiology of Pseudomonas aeruginosa Infections in a Neonatal Intensive Care Unit (1993)
Gupta, A. K., Shashi, Shiv, Mohan, Man, Lamba, I. M. S., Gupta, R.
During the 19-month study period, 48 (2 per cent) of the 2177 neonates admitted to the neonatal intensive care unit (NICU) yielded Pseudomonas aeruginosa growths in blood cultures. All these neonates...
Effects of Sandimmun on T lymphocyte and dendritic cell subpopulations in psoriasis (1990)
Fry, L., Ellis, Charles N., Gupta, A. K., Baadsgaard, Ole, Powles, A. V., Baker, B. S., ...
Peer Reviewed
Gupta, A. K., Cooper, Kevin D., Ellis, Charles N., Baadsgaard, Ole, Voorhees, John J.
Since cyclosporin A (CsA) is an immuno-suppressive agent, its beneficial effect in psoriasis suggests that immune cells may play a role in the pathogenesis and resolution of psoriasis. To determine...
Distribution of LRC for testing sphericity of a complex multivariate Gaussian model (1985)
D. K. Nagar, S. K. Jain, A. K. Gupta
In this paper, exact null distribution of the likelihood ratio criterion for testing sphericity structure in a complex multivariate normal covariance matrix is obtained in computable series form. The...
Distribution of LRC for testing sphericity of a complex multivariate Gaussian model (1985)
D. K. Nagar, S. K. Jain, A. K. Gupta
In this paper, exact null distribution of the likelihood ratio criterion for testing sphericity structure in a complex multivariate normal covariance matrix is obtained in computable series form. The...
In this paper the exact distribution of the likelihood ratio statistic for testing equality of covariance matrices of multivariate Gaussian models has been derived. Percentage points of the test...
Phi-divergences and polytomous logistic regression models: An overview (0000)
In this paper we assume that the categorical data are distributed according to a multinomial distribution whose probabilities follow a polytomous logistic regression model and we present some...
Residual analysis and outliers in loglinear models based on phi-divergence statistics (0000)
In this paper we consider new families of residuals and influential measures, under the assumption of multinomial sampling, for loglinear models. These new families are based on @f-divergence test...
Summerbell, R. C., Haugland, R. A., Li, A., Gupta, A. K.
The ribosomal region spanning the two internal transcribed spacer (ITS) regions and the 5.8S ribosomal DNA region was sequenced for asexual, anthropophilic dermatophyte species with morphological...
Chakrabarti, A., Singh, K., Narang, A., Singhi, S., Batra, R., Rao, K. L. N., ...
An outbreak of nosocomial fungemia due to the unusual yeast, Pichia anomala occurred in the pediatric wards of our hospital over a period of 23 months (April 1996 to February 1998). A total of 379...
The nucleocapsid protein (N) and phosphoprotein (P) genes of vesicular stomatitis virus (VSV), Indiana serotype, were coexpressed in Escherichia coli BL21(DE3) by using the expression vector pET-3a....
Gupta, A K, Kirchner, K A, Nicholson, R, Adams, J G, Schechter, A N, Noguchi, C T, ...
A defect in urine concentrating ability occurs in individuals with sickle cell trait (HbAS). This may result from intracellular polymerization of sickle hemoglobin (HbS) in erythrocytes, leading to...
Pathology of tropical appendicitis.
Gupta, S C, Gupta, A K, Keswani, N K, Singh, P A, Tripathi, A K, Krishna, V
Over the past 25 years, 2921 appendicectomies were performed at this hospital. All were subjected to routine histopathological examination. In 95% of cases, histopathological examination did not add...
Onychomycosis. New therapies for an old disease.
Gupta, A K, Scher, R K, De Doncker, P, Sauder, D N, Shear, N H
The newer generation of antifungal agents such as itraconazole and terbinafine are more effective than the older therapies, griseofulvin and ketoconazole, in the treatment of dermatophyte pedal...
Sapru, R P, Ganguly, N K, Sharma, S, Chandani, R E, Gupta, A K
Cell-mediated immunity and blood complement activities were studied in 35 patients with chronic rheumatic heart disease (RHD) and 17 normal subjects. The T-cell population in patients with RHD was...
Cholestasis in amoebic liver abscess.
Nigam, P, Gupta, A K, Kapoor, K K, Sharan, G R, Goyal, B M, Joshi, L D
Two hundred and thirty six patients with amoebic liver abscess were investigated for cholestasis, its mechanism and the natural course of the disease. Cholestasis was seen in 29% of cases and it...
Toal, S C, Vajifdar, B U, Gupta, A K, Vora, A M, Lokhandwala, Y Y
Objective: To evaluate the efficacy of single dose intravenous adenosine in differentiating atrioventricular nodal re-entrant tachycardia (AVNRT) from concealed pathway mediated atrioventricular...
Kirkpatrick, J N, Manivannan, A, Gupta, A K, Hipwell, J, Forrester, J V, Sharp, P F
AIMS--An investigation was carried out to compare the image quality of the ocular fundus obtained clinically, photographically, and with the scanning laser ophthalmoscope (SLO) at visible and...
Serum and tear immunoglobulin levels in acute adenovirus conjunctivitis.
Tear and serum IgG, IgA, and IgM levels were measured in 35 healthy subjects and 31 patients with acute conjunctivitis due to adenovirus 2, 7, and 8 infections. Serum IgG and IgM levels were found to...
Immunoassay of serum alpha-1 antitrypsin level in uveitis.
The serum alpha-1 antitrypsin level was measured in 60 patients with endogenous uveitis, 27 patients with phacoallergic endophthalmitis, 12 patients with phacolytic glaucoma, and 58 healthy subjects....
Serum complement component depression during acute adenovirus conjunctivitis.
Serum C1q, C3, C4, and C5 components of complement levels were measured in 35 healthy subjects and 29 patients with acute conjunctivitis due to adenovirus type 2, 7, and 8 infections. Serum C1q and...
Immunoassay of tear lysozyme in acute adenovirus conjunctivitis.
Gupta, A. K., Sarin, G. S., Lamba, P. A., D'Souza, P.
The tear lysozyme levels were measured by immunoassay in 92 healthy subjects and 98 patients with acute adenovirus conjunctivitis. They were found to be significantly decreased during the acute phase...
Alpha 1-antitrypsin and serum albumin in tear fluids in acute adenovirus conjunctivitis.
Gupta, A. K., Sarin, G. S., Mathur, M. D., Ghosh, B.
The alpha 1-antitrypsin and serum albumin levels in tear fluids were measured by electroimmunodiffusion in 76 healthy subjects and 63 patients with acute adenovirus conjunctivitis. They were found to...
Dacryocystography of normal and pathological lacrimal passages.
Malik, S R, Gupta, A K, Chaterjee, S, Bhardwaj, O P, Saha, M
Epilepsy patients treated with vigabatrin exhibit reduced ocular blood flow
Hosking, S L, Roff Hilton, E J, Embleton, S J, Gupta, A K
Background/aim: Reduced cerebral blood flow and decreased glucose metabolism have been identified in epilepsy patients receiving vigabatrin. It is likely that such a change may extend to the eye and...
Gupta, A.K., Berry, C., Gupta, M., Curtis, A.S.G.
Superparamagnetic iron oxide nanoparticles have been used for many years as magnetic resonance imaging contrast agents or in drug delivery applications. Tissue and cell-specific drug targeting by...
The concept of drug delivery using magnetic nanoparticles greatly benefit from the fact that nanotechnology has developed to a stage that it makes possible not only to produce magnetic nanoparticles...
Onychomycosis. Going for cure.
OBJECTIVE: To review onychomycosis with an emphasis on the traditional and newer antifungal agents available to treat onychomycosis. QUALITY OF EVIDENCE: We searched MEDLINE for the years 1966 to...
Gupta, A.K., Berry, C., Gupta, M., Curtis, A.S.G.
Superparamagnetic iron oxide nanoparticles have been used for many years as magnetic resonance imaging contrast agents or in drug delivery applications. Tissue and cell-specific drug targeting by...
The concept of drug delivery using magnetic nanoparticles greatly benefit from the fact that nanotechnology has developed to a stage that it makes possible not only to produce magnetic nanoparticles...
Aura in temporal lobe epilepsy: clinical and electroencephalographic correlation.
Gupta, A K, Jeavons, P M, Hughes, R C, Covanis, A
Patients with temporal lobe epilepsy were evaluated for their aura and the site of EEG abnormality. Autonomic and psychic auras were more frequently associated with right-sided temporal lobe lesions...
Complex partial seizures: EEG foci and response to carbamazepine and sodium valproate.
The EEG and clinical records were reviewed of 85 subjects who had been treated for complex partial seizures with carbamazepine alone or with a combination of carbamazepine and sodium valproate. There...
The frequency, characteristics and prognosis of epileptic seizures at the onset of stroke.
Shinton, R A, Gill, J S, Melnick, S C, Gupta, A K, Beevers, D G
In a series of 230 patients admitted to hospital with a stroke, the frequency and significance of epileptic seizures at onset was assessed. Thirteen (5.7%) suffered single or multiple witnessed...
Characterization ofp-Generalized Normality
In this paper some characterization results ofLp-norm spherical distributions are obtained. It is proved that ifX=(X1, ..., Xn)' has aLp-norm spherical distribution having certain independence...
Estimation of Multinomial Probabilities under a Model Constraint
In this paper estimation of the probabilities of a multinomial distribution has been studied. The five estimators considered are: unrestricted estimator (UE), restricted estimator (RE) (under model...
Characterization of matrix variate normal distributions
In this paper, it is shown that two random matrices have a joint matrix variate normal distribution if, conditioning each one on the other, the resulting distributions satisfy certain conditions. A...
Moments of ratios of quadratic forms
A method is described to obtain the exact moments of ratios of quadratic forms x1 Ax/x1 x, where x is normally distributed with mean [mu] and covariance matrix [Sigma]. The moments of the serial...
Linear restrictions and two step multivariate least squares with applications
Some univariate normal linear regression model results of Pino (1984) are generalized to the multivariate normal linear regression model Y = X[beta] + E. The effect of transferring the information Y...
Testing for Poissonity-normality vs. other infinite divisibility
Gupta, A. K., Móri, T. F., Székely, G. J.
A new test for Poissonity--normality is proposed based on the characterization that for Poisson and normal distributions the squared skewness is the same as the kurtosis, and no other infinitely...
Rank of a quadratic form in an elliptically contoured matrix random variable
In this paper it is shown that the quadratic form in an elliptically contoured matrix variate has a constant rank and its nonzero eigenvalues are distinct with probability one if the matrix...
On a multiple correlation ratio
A squared multiple correlation ratio of a random vector y on another random vector x is defined by [eta]2(y,x)=V(E(yx))/V(y). The advantages of the present multiple correlation ratio over the one...
On the distribution of the product of independent beta random variables
In this paper, exact distribution of the product of independent beta random variables has been derived and its structural form is given together with recurrence relations for the coefficients of this...
Estimation of the eigenvalues of noncentrality parameter matrix in noncentral Wishart distribution
Gupta, A. K., Sheena, Y., Fujikoshi, Y.
We consider the problem of estimating the eigenvalues of noncentrality parameter matrix in noncentral Wishart distribution when the scale parameter is known. A decision theoretic approach is taken...
Testing for affine equivalence of elliptically symmetric distributions
Gupta, A. K., Henze, N., Klar, B.
Let X and Y be d-dimensional random vectors having elliptically symmetric distributions. Call X and Y affinely equivalent if Y has the same distribution as AX+b for some nonsingular dxd-matrix A and...
The distribution of symmetric matrix quotients
Phillips (J. Multivariate Anal. 16 (1985) 157) generalizes Cramer's (Mathematical Methods of Statistics, Princeton University Press, Princeton, NJ, 1946) inversion formula for the distribution of a...
Multi-objective scheduling of two-job families on a single machine
This paper presents a preliminary analysis of the typical scheduling environment in semiconductor manufacturing involving multiple job families, and where more than one objective such as cycle time,...
Phi-divergences and polytomous logistic regression models: An overview
In this paper we assume that the categorical data are distributed according to a multinomial distribution whose probabilities follow a polytomous logistic regression model and we present some...
Residual analysis and outliers in loglinear models based on phi-divergence statistics
In this paper we consider new families of residuals and influential measures, under the assumption of multinomial sampling, for loglinear models. These new families are based on @f-divergence test...