Browsing by Author "A.K. Agrawal"

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Angiography in peripheral artery aneurysms
(1975) S.K. Gupta; V. Mohan; A.K. Agrawal; K. Shashidharan
[No abstract available]
Choledochal cyst: A changing pattern of presentation
(2001) Vedant Kabra; Mudit Agarwal; Tarun K. Adukia; V.K. Dixit; A.K. Agrawal
Background: The aim of the present paper was to study the spectrum of choledochal cysts and analyse the results of various surgical procedures. Methods: A prospective study was undertaken, at University Hospital, Varanasi, India, of 10 patients with choledochal cyst who presented between January 1996 and June 2000. The patients had a median age at presentation of 16.0 years (interquartile range (IQR): 13.75 years). All patients underwent ultrasonography and endoscopic retrograde cholangiopancreaticography for confirmation of diagnosis. Cyst excision was performed in eight patients followed by reconstruction by hepaticoduodenostomy and Roux-en-Y hepaticojejunostomy in four patients each. Two patients underwent cystoduodenostomy. Results: One patient who underwent hepaticoduodenostomy had a minor leak that responded to conservative management. All patients were asymptomatic at a median follow up of 36.5 months (IQR: 31 months). Conclusions: There is a changing trend in the commonest mode and age of presentation; fewer patients are presenting with the classical triad and the mean age of presentation is higher. Reconstruction by hepaticoduodenostomy is equally effective, more physiological and less time consuming as compared to hepaticojejunostomy, if the anastomosis can be achieved without tension.
Clinical and biochemical profiles of young diabetics in North-Eastern India
(2002) V.P. Jyotsna; S.K. Singh; D. Gopal; A.G. Unnikrishnan; N.K. Agrawal; V.K. Dixit; A.K. Agrawal; J.K. Agrawal
Objective : We compared the clinical and biochemical profiles of young diabetics in North Eastern India. Methods : Seventy diabetics who were detected at less than 30 years of age were studied. Patients with ketoacidosis or ketonuria on insulin withdrawal were grouped as insulin dependent diabetes mellitus (IDDM), patients with history of chronic abdominal pain with or without exocrine pancreatic dysfunction who either on ultrasonography (USG) or endoscopic retrograde cholangiopancreaticoduodenography (ERCP) revealed pancreatic calcification and/or ductal dilatation were grouped as fibrocalculous pancreactic diabetes (FCPD), those having BMI < 19 kg/m2 with history or stigmata of childhood malnutrition and who were ketosis resistant were taken to be protein deficient diabetes mellitus (PDDM)/malnutrition modulated diabetes mellitus (MMDM) and those who neither had ketonuria nor history of chronic abdominal pain, malabsorption or stigmata of malnutrition were grouped as NIDDM of young (NIDDY). Results : Amongst the young diabetics studied FCPD constituted 32.9%, IDDM 28.6%, MMDM 21.4% and NIDDY 17.11%. USG abnormalities were observed in 21 of the 23 patients of FCPD. Seven out of these showed pancreatic head calcification on X-ray while 14 showed pancreatic duct dilatation and calcification or calculi on USG. In the two remaining patients, ERCP revealed tortuousity of main pancreatic duct and calcification which were not detected on USG. Majority of FCPD and MMDM patients revealed insulin resistance on insulin tolerance test (ITT). HDL was significantly lower in NIDDY, while VLDL and triglycerides were significantly higher in FCPD and MMDM as compared to controls. Microvascular complications of diabetes were seen in all these groups, with peripheral neuropathy being more common in FCPD (43.5%) and background diabetic retinopathy in NIDDY (41%). Conclusions : We conclude that FCPD and MMDM together form majority (54.29%) of young diabetics at our center and a sizeable proportion of them may have microvascular complications, even at the time of diagnosis.
Clinical, ultrasonographic and cholangiographic (PTC & ERCP) evaluation in obstructive jaundice
(1985) A.K. Jain; A.K. Agrawal; B.V. Tantry
[No abstract available]
Disseminated multicystic tuberculosis. (A case report)
(1980) V. Mohan; S.K. Gupta; A.K. Agrawal
A rare case of cystic tuberculosis, showing widespread multicyclic lesions in the long bones of the upper and lower limb is presented. The lesions were bilaterally symmetrical and associated with sclerosis of the bones. The primary focus was in the lungs. The cervical and mediastinal group of lymph nodes and the liver were also involved in the disease process. The uncommon findings included gross sclerosis of the involved bones and the diaphyseal location of the lesions.
Duodenal tuberculosis
(1988) S.K. Gupta; A.K. Jain; J.P. Gupta; A.K. Agrawal; K. Berry
The clinical and radiological features in 30 cases of duodenal tuberculosis are presented. The patients are divisible into two groups on the basis of their presenting features. Twenty-two had symptoms and signs of gastric or duodenal obstruction, and eight patients had dyspepsia suggesting peptic ulceration. In the first group, laporotomy showed that the duodenal obstruction was due to extrinsic compression by matted tuberculous lymph nodes in the majority; there was only five intrinsic strictures. In patients with dyspepsia there were bulbar and post-bulbar ulcers accompanied by more widespread mucosal changes, induration, and periduodenal lymphadenopathy. Bypass procedures were performed to relieve obstruction; no resection was possible because of the adherence of the lymph node masses. © 1988 The Royal College of Radiologists All rights reserved.
Duodenal tuberculosis
(2002) S.K. Gupta; A.K. Jain; J.P. Gupta; A.K. Agrawal; K. Berry
Pasteurization of milk and effective treatment of tuberculosis have greatly reduced the incidence of upper gastrointestinal tuberculosis. When it does occur, it is commonly mistaken for peptic ulcer disease, Crohn's disease or neoplasm, both clinically and radiologically. This paper reports a case of isolated duodenal tuberculosis; a very rare entity.
Effect of Piper longum Linn, Zingiber officianalis Linn and Ferula species on gastric ulceration and secretion in rats
(2000) A.K. Agrawal; Ch.V. Rao; K. Sairam; V.K. Joshi; R.K. Goel
Use of Dipaniya Mahakasaya, a group consisting of 10 herbal drugs, has been suggested in Charaka Samhita to improve digestion. Out of these 10 plants, three, viz. P. longum (water decoction), Z. officianalis (water decoction) and Ferula species (colloidal solution) were studied for their antiulcer and mechanism of antiulcer effects in rats. All the drugs in the dose of 50 mg/kg, po, 60 min prior to experiment, showed significant protection against gastric ulcers induced by 2 hr cold restraint stress, aspirin (200 mg/kg, 4 hr) and 4 hr pylorus ligation. The antiulcerogenic effect seemed to be due to the augmentation of mucin secretion and decreased cell shedding rather than offensive acid and pepsin secretion which however, were found to be increased by them.
Effects of MHD free convection and mass transfer on the flow past a vibrating infinite vertical circular cylinder
(Springer-Verlag, 1989) A.K. Agrawal; B. Kishor; A. Raptis
The effects of MHD free convection and mass transfer are taken into account on the flow past a vibrating infinite isothermal and constant heat flux vertical circular cylinder. The expressions for velocity, temperature, concentration and skin-friction of the fluid are obtained in closed form by using Laplace transform technique. The effects of Pr (Prandtl number), Sc (Schmidt number), Gr (Grashof number, Gr>0 implies cooling and Gr<0 heating of the cylinder), Gm (modified Grashof number), M (magnetic field parameter) and variation of time on velocity distribution have been studied graphically. The results presented in this paper agree with the results of Lien and Chen when magnetic parameter approaches zero. © 1989 Springer-Verlag.
Energy use pattern in rice milling industries—a critical appraisal
(Springer, 2014) S.K. Goyal; S.V. Jogdand; A.K. Agrawal
Rice milling industry is one of the most energy consuming industries. Like capital, labour and material, energy is one of the production factors which used to produce final product. In economical term, energy is demand-derived goods and can be regarded as intermediate good whose demand depends on the demand of final product. This paper deals with various types of energy pattern used in rice milling industries viz., thermal energy, mechanical energy, electrical energy and human energy. The important utilities in a rice mill are water, air, steam, electricity and labour. In a rice mill some of the operations are done manually namely, cleaning, sun drying, feeding paddy to the bucket elevators, weighing and packaging, etc. So the man-hours are also included in energy accounting. Water is used for soaking and steam generation. Electricity is the main energy source for these rice mills and is imported form the state electricity board grids. Electricity is used to run motors, pumps, blowers, conveyors, fans, lights, etc. The variations in the consumption rate of energy through the use of utilities during processing must also accounted for final cost of the finished product. The paddy milling consumes significant quantity of fuels and electricity. The major energy consuming equipments in the rice milling units are; boilers and steam distribution, blowers, pumps, conveyers, elevators, motors, transmission systems, weighing, etc. Though, wide variety of technologies has been evolved for efficient use of energy for various equipments of rice mills, so far, only a few have improved their energy efficiency levels. Most of the rice mills use old and locally available technologies and are also completely dependent on locally available technical personnel. © 2012, Association of Food Scientists & Technologists (India).
Enteroliths in tuberculous strictures of intestines
(1984) S.K. Gupta; O.P. Sharma; A.K. Agrawal; A.K. Singh; K. Sasibabu
Eight cases of opaque enteroliths associated with tuberculous strictures are described. Long history of chronic partial intestinal obstruction with occasional episodes of acute attacks managed by conservative treatment was the presenting feature in all cases. Plain X-ray revealed solitary (6 cases) or multiple (2 cases) radio-opaque densities showing wide mobility on successive roentgenograms. The enteroliths had a peripheral dense rim and in some X-rays 'coin on end' position indicating disc shaped configuration. Multiple enteroliths were either closeted or widely separated indicating free longitudinal mobility inside the dilated loop of intestines proximal to a stricture. Intra-luminal location was documented in three cases on barium studies. In three cases enteroliths were submerged in the barium filled dilated loop of intestines. One case had associated cholelithiasis and cholecystitis without any evidence of communication between the biliary and gastrointestinal tract.
Evaluation of Manning's criteria in the diagnosis of irritable bowel syndrome.
(1993) K.P. Rao; S. Gupta; A.K. Jain; A.K. Agrawal; J.P. Gupta
Six symptoms of Manning et al are widely used in clinical practice to diagnose irritable bowel syndrome (IBS). We studied 123 patients to evaluate the diagnostic value of Manning's criteria, using a preformed bowel symptom questionnaire which included these six symptoms. This study included 65 patients with IBS, 35 patients with non-ulcer dyspepsia, 23 patients with organic diseases of colon and 45 healthy controls. Sensitivity of presence of three or more symptoms of Manning's criteria discriminating irritable bowel syndrome from all other groups was 66.1%. Manning's criteria discriminated irritable bowel syndrome from organic diseases of colon with specificity and positive predictive value of 66.9% and 82.6%. When irritable bowel syndrome was compared with non-ulcer dyspepsia and healthy controls, specificities of Manning's criteria were 91.4% and 93.3% and positive predictive values 93.4% and 93.4% respectively.
Gastro-esophageal reflux disease (GERD): an appraisal of different tests for diagnosis.
(1990) J.P. Gupta; A. Kumar; A.K. Jain; S.K. Yadav; M. Kumar; A.K. Agrawal
Fifty symptomatic patients with GERD, 20 each of non ulcer dyspepsia (NUD) & duodenal ulcer (DU) and 10 healthy controls were subjected to various tests employed for diagnosis of GERD. Among these endoscopy and histology had highest sensitivities (92% & 91% respectively) followed by Bernstein's test (overall 88%; early positivity 72%) and oesophagography (70%). The specificities of various tests were: endoscopy (86%), histology (82%) and Bernstein's test (overall 80%; early positive 94%). The false positivity was mainly in DU subjects where majority (greater than 84%) had two or more of these tests offitive. Any two of the three tests (endoscopy, histology & Bernstein's test) in combination had a sensitivity of 80-91% and a specificity of 90-92%. Our observations suggest that these tests, particularly in combination, are useful in establishing the diagnosis of GERD and that subclinical oesophagitis in DU might be responsible for the false positivity of these tests.
Hall effects on convective hydromagnetic flow past a flat plate
(1984) H.L. Agrawal; P.C. Ram; V. Singh; A.K. Agrawal
Hydromagnetic free convective flow past an infinite vertical, porous plate in the presence of a uniform transverse magnetic field has been considered taking Hall effects into account. Approximate solutions for the mean velocity, mean temperature and their related quantities are obtained. The influence of various dimensionless parameters is discussed. © 1984.
Induced polarisation in search of lead-zinc mineralisation in Sawar belt, Ajmer district, Rajasthan
(2006) L.N. Singh; T. Lal; A.K. Agrawal; S.L. Singh; Narendra Singh
Lead-zinc mineralisation in Sawar metasedimentary belt is essentially sediment-hosted type. It is of Proterozoic age and occurs in the two-carbonate members of Sawar group. Induced Polarisation cum resistivity survey has delineated 22 anomaly zones located in lower marble, lower schist and upper marble and at the mutual contacts formed by these different litho-units of Sawar group. Out of these, eight zones have been drill tested proving mineralisation and the remaining 14 zones in the area are yet to be tested. Drilling results in the area have clearly indicated that there is a fair correlation between induced polarisation cum resistivity anomalies and mineralised zones intersected in the different boreholes. Induced Polarisation cum resistivity pseudo depth sections constructed in few zones located over different rock units have established depth persistence of inferred shallow conductors. The resistivity survey has demarcated the contact of different litho-units of Sawar group occurring in the area even under soil cover. The lithocontacts inferred from resistivity data coincide fairly accurate with extrapolated geological contacts. The interpretation of induced polarisation and resistivity pseudo sections by inversion technique has brought the model and its geometry, which compares well with the subsurface geology. The resistivity model correlates the measured and calculated apparent resistivity pseudo sections. The chargeability model also corroborates these inferences. © Geol. Soc. India.
Modeling the effect of toxicant on the deformity in a subclass of a biological species
(Springer Science and Business Media Deutschland GmbH, 2016) A. Kumar; A.K. Agrawal; A. Hasan; A.K. Misra
In this paper, a nonlinear mathematical model to study the effect of a toxicant on a biological population is proposed and analyzed. We have taken the case in which some members of a biological population get severely affected by the toxicant and show abnormal symptoms, like deformity, fecundity, necrosis, etc. It has been assumed that the toxicant is produced by the population itself. This model can be applied to the human population which creates pollution and affects itself. The analysis of the model suggests the need of a regulatory agency to control the emission of toxicant from manmade projects. The stability analysis of the equilibria of the proposed model and existence of Hopf-bifurcation are determined. We have also determined the direction and stability of bifurcating periodic solutions to clearly understand the effect of emission rate of the toxicant on the biological species. Finally, numerical simulation has been given to illustrate the mathematical results. © 2016, Springer International Publishing Switzerland.
Modeling the impact of cloud seeding to rescind the effect of atmospheric pollutants on natural rainfall
(Springer Science and Business Media Deutschland GmbH, 2024) Gauri Agrawal; A.K. Agrawal; Joydip Dhar; A.K. Misra
Water is an essential element for life on the planet Earth, which comes on the Earth naturally through precipitation. Continuous increase in human population has diminished the open land water sources and increased surface water pollution as well as atmospheric pollution. The increasing human population and the presence of atmospheric pollutants affect the natural formation of cloud droplets and their conversion into raindrops, respectively, and thus results in rainfall suppression, as observed in the last few decades. In this study, we formulate a nonlinear mathematical model to assess the influence of artificially introduced conducive aerosols in the regional atmosphere through a weather modification technique ‘cloud-seeding’ for rainfall enhancement to rescind the effect of atmospheric pollutants on natural rainfall. In the modeling phenomenon, it is assumed that atmospheric pollutants reduce the condensation and nucleation processes of cloud droplets to form raindrops, but the introduction of conducive aerosols in the regional atmosphere increases the condensation and nucleation processes of cloud droplets, thus increases the formation of raindrops. The local as well as global stability behavior of the feasible equilibria are discussed, and sensitivity analysis is performed for the key parameters. Along with the analytical findings, the numerical simulation is presented to corroborate the obtained analytical findings. The model analysis provides some interesting results to overcome rainfall suppression. © The Author(s), under exclusive licence to Springer Nature Switzerland AG 2023.
Non-specific arteritis (Takayasu's arteritis) angiographic study of ten patients
(1976) S.K. Gupta; A.K. Agrawal; T.K. Lahiri
[No abstract available]
Persistent primitive sciatic artery associated with Mullerian agenesis and solitary kidney
(1982) A.K. Agrawal; S.K. Gupta; S. Khanna; A.K. Goel
[No abstract available]
Proceedings of the international session of the 26th annual meeting October 18-20, 1984-Chiba, Japan
(Springer-Verlag, 1985) Y. Kato; H. Miyamori; M. Unoura; N. Ohmizo; N. Tanaka; K. Kobayashi; N. Hattori; Y. Arakawa; S. Amaki; T. Shikata; Bang-Hyun Liu; K. Kanai; S. Morioka; M. Nishida; H. Noto; K. Takahashi; K. Matsushita; R.P. Beasley; Lu-Yu Hwang; M. Yano; M. Shima; E. Tsunoda; M. Koga; T. Minamino; T. Tsuji; K. Kagawa; T. Okuno; T. Takino; Takeshi Kurihara; Hiroshi Obata; K. Okita; T. Konishi; Y. Kado; O. Yokosuka; M. Omata; F. Imazeki; M. Ryuu; K. Okuda; Keiji Mitamura; D.S. Chen; J.L. Sung; M.Y. Lai; J.C. Sheu; H.C. Hsu; T. Nakamura; T. Morizane; M. Tsuchiya; K. Kobayashi; K. Okawa; K. Kobayashi; A. Kitano; S. Kuwajima; H. Hashimura; T. Matsumoto; M. Hiki; S. Yamamoto; Y. Kinoshita; H. Nagura; Y. Shioda; Y. Tsutsumi; H. Hasegawa; K. Watanabe; T. Kanoh; O. Nishida; H. Uchino; T. Miyake; Y. Hishitani; D.K. Bhargava; B.N.Tandon Shriniwas; B.M.L. Kapur; T.C. Chawla; Usha Kiran; J.P. Gupta; A.K. Jain; B.K. Agrawal; Saroj Gupta; M. Chiba; M. Sasaki; M. Konn; Y. Yamanaka; T. Morita; T. Hashizume; K. Nara; H. Odagiri; M. Fujii; K. Ono; Y. Nio; T. Tsuchitani; T. Inamoto; H. Kodama; T. Tobe; Z.R. Shi; Y.S. Kim; H. Yamaoka; K. Nishiyama; S. Tajima; T. Fukushima; S. Tsuchiya; K. Kuroe; A. Kimura; Y. Suwa; H. Furukawa; T. Miyake; M. Watanabe; T. Yoshida; S. Aiso; H. Asakura; M. Tsuchiya; M. Miura; N. Hiwatashi; Y. Fujiyama; K. Kobayashi; T. Bamba; S. Hosoda; Y. Benno; Y. Wakashin; M. Wakashin; T. Mori; S. Ueda; H. Yoshida; Y. Mori; K. Okuda; Li You; Ye Wei-Fa; Guang-Xao Yang; Wei-Fa Ye; R.H.H. Nelwan; B.M. Gandhi; H. Gupta; M. Irshad; B.N. Tandon; Mong Cho; Xie-ning Wu; Rakesh K. Tandon; A.K. Srivastava; R.K. Misra; Shi-hu Jiang; Yan-zun Lin; S.A. Abdurachman; Sujono Hadi; K.R. Bhat; Wang Baoen; N. Madanagopalan; V. Solomon; V. Jayanthi; K. Raghuram; I. Kandasamy; S. Annapoorani; A. Gajarai; M. Panchanadam; Y.K. Joshi; A. Hassan; H. Guntur; R. Soemarto; S.H. Rahardja; W. Soemarto; Keun-Soo Park; G.B. Yao; L.M. Zhang; M.F. Wu; S.T. Tong; Y.F. Tian; N. Iwai; H. Kaneda; T. Tsuto; J. Yanagihara; T. Takahashi; Zhang Jinkun; Hamid A. Durrani; J.P. Gupta; A.K. Jain; A.K. Govil; V.N.P. Tripathi; Z.R. Shi; D.Y. Yin; F.Q. Wen; Jinkun Zhang; V.C. Balasubramania; P.S. Are; S.P. Thyagarajan; S. Mahadevan; S. Dravidamani; Pranesh Nigam; A.K. Agrawal; K.K. Kapoor; L. Lesmana; H. Sidharta; W. Marwoto; N. Akbar; A. Sulaiman; H.M. Sjaifoellah Noer; J.P. Gupta; B.V. Tantry; A.K. Jain; J.C. Sheu; D.S. Chen; J.L. Sung; C.N. Chuang; P.M. Yang; J.T. Lin; H.C. Hsu; J.C. Sheu; Y.H. Lin; D.S. Chen; C.S. Lee; L.Y. Hwang; A.K. Gupta
[No abstract available]