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Lichenoid Reaction - A Diagnostic Dilemma
Manas Bajpai 대한예방치과학회 2013 International Journal of Clinical Preventive Denti Vol.9 No.1
Oral lichenoid reactions are considered as a variant of Oral Lichen Planus (OLP) may be regarded as a disease by itself or as an exacerbation of an existing OLP, by the presence of medication and dental materials. The management of OLP and the Various OLLs may be different. Therefore, accurate diagnosis should be aimed at; here we are presenting a case of a white lesion in a fifty year old male patient shows histopathological features similar to with OLP. The diagnosis was made on the ground of the drug association.
Manas Bajpai 대한임상예방치과학회 2011 International Journal of Clinical Preventive Denti Vol.7 No.4
Ghost cell is a dead cell in which the cell outline remains is visible, but whose nucleus and cytoplasmic structures are not stainable Formerly, ghost cell have been considered to represent a form of true or aberrant keratinization simple cell degeneration or enamel matrix but the true nature of these cells has not been determined. Ghost cell maybe due to abnormal keratinization, related to ischemia, coagulative necrosis. Calcification may occur in some of the ghost cell and represent dystrophic calcification the aim of this paper is an attempt to describe in detail about the origin, microscopic appearance and histopathologic features of ghost cells.
Manas Bajpai 대한예방치과학회 2012 International Journal of Clinical Preventive Denti Vol.8 No.2
Myiasis is the infestation of live human and vertebrate animal with dipterous larvae which feed on the host’s dead or living tissue. The term myiasis is derived from Latin word ‘muia’ which means fly and ‘iasis’ means disease. It is a pathology caused by the larvae in human and animal tissue that evolve to a parasite. It is comparatively more often seen in South East Asian countries in comparison with western countries due to their subtropical climate which is favorable for the growth of flies. This paper presents a rare case of Oral myiasis in anterior maxillary region of 39 year old male, caused by larvae (maggots). The treatment consisted of surgical debridment of the wound.
Anticorrosion Performance of FCAW Cladding with Regard to the Influence of Heat Input
Manas Kumar Saha,Ajit Mondal,Ritesh Hazra,Santanu Das 대한용접·접합학회 2018 대한용접·접합학회지 Vol.36 No.5
Heat input plays a significant role in flux cored arc welding (FCAW) for producing quality welding. Weld cladding improves corrosion resistance and other mechanical properties. Selection of appropriate heat input is required to get optimum quality of the cladding. In this experiment, FCAW cladding of duplex stainless steel is done on low alloy steel under CO₂ gas shield. Three sets of heat input are chosen for experimentation in which each level of heat input comprised of three sets of current and voltage in such a way that the heat input level remained nearly constant. The output parameters like corrosion rate is measured and microstructures are evaluated. The relationship between heat input and corrosion rate is evaluated by means of polynomial regression analysis and the results matched with proposed model with small variations. The results showed that corrosion rate increases with increase in heat input within the experimental domain. Minimum corrosion rate is obtained in the present investigation at 0.49 kJ/mm heat input with 170A weld current, 27V weld voltage and 7.5 mm/s weld torch travel speed. For a particular heat input, corrosion rate is found to vary with different weld current. Microstructure of duplex stainless steel cladding shows presence of austenite phase, and ferrite phase. For an increase in heat input, the microstructure of clad part sacrifices more amount of ferrite phase that exhibits more amount of corrosion.
Quadcopter control using the viscoelastic control law
Manas Kumar Sahoo,J. K. Dutt,S. K. Saha 제어로봇시스템학회 2021 제어로봇시스템학회 국제학술대회 논문집 Vol.2021 No.10
Quadcopter is an unmanned aerial vehicle (UAV) with four rotors and generally, they are placed in a square formation with equal distance from the centre of mass. The thrust produced by each rotor is directed upward and the UAV is controlled by varying the magnitude and direction of the rotor speed with the help of DC motors. In this paper, a novel controller is proposed that imitate the behavior of four-element viscoelastic material. Some unmodelled disturbances was fed to the system to check the controller performance. The FE controller performance was compared with the classical PID controller. As in real world performances quadcopters are used in the presence of various sensors and other measuring devices, the time delay introduced by these instruments becomes very important for the stability of the system. Hence both the controllers were subjected to some designed time delay so that they can be compared in real-world scenario. The simulation of the above was carried out with the help of Simulink platform and from the simulation it was found that the FE controller is fast, accurate and precise in performance compared to the PID controller.
Inflammatory Myofibroblastic Tumor of the Urinary Bladder Managed by Laparoscopic Partial Cystectomy
Manas Ranjan Pradhan,Priyadarshi Ranjan,Ram Nawal Rao,Saurabh Sudhir Chipde,Krishna Pradhan,Rakesh Kapoor 대한비뇨의학회 2013 Investigative and Clinical Urology Vol.54 No.11
Inflammatory myofibroblastic tumor of the urinary bladder is a rare mesenchymal tumor with uncertain malignant potential. It often mimics soft tissue sarcomas both clinically and radiologically. Surgical resection in the form of partial cystectomy or transurethral resection remains the mainstay of treatment. Herein we report the case of an inflammatory myofibroblastic tumor in a young girl, which was managed by laparoscopic partial cystectomy. To the best of our knowledge, this is the first reported case of laparoscopic management of an inflammatory myofibroblastic tumor of the urinary bladder.
JNM : Original Article ; Defecation Frequency and Stool Form in a Coastal Eastern Indian Population
( Manas Kumar Panigrahi ),( Sanjib Kumar Kar ),( Shivaram Prasad Singh ),( Uday C Ghoshal ) 대한소화기기능성질환·운동학회(구 대한소화관운동학회) 2013 Journal of Neurogastroenterology and Motility (JNM Vol.19 No.3
Background/Aims Data on normal stool form and frequency, which are important for defining constipation, are scanty; hence, we studied these in an eastern Indian population. Methods One thousand and two hundred apparently healthy asymptomatic subjects were evaluated for predominant stool form (Bristol chart with descriptor) and frequency. Data on demographic and life-style (diet and physical activity) were collected. Results Of 1,200 subjects (age 42 ± 14.5 years, 711, 59% male), most passed predominantly Bristol type IV stool (699 [58.2%]; other forms were: type I (23 [1.9%]), type II (38 [3.2%]), type III (99 [8.2%]), type V (73 [6%]), type VI (177 [14.7%]), type VII (7 [0.6%]) and an irregular combination (84 [7%]). Weekly stool frequency was 12.1 ± 4.7 (median 14, range 2-42). Less than 3 stools/week was noted in 32/1,200 (2.6%). Female subjects (n = 489) passed stools less frequently than males (n = 711) (11.1 ± 5.6/week vs. 12.8 ± 3.8/week, P< 0.001) and tended to pass harder forms (type I: 17, type II: 20, type III: 39 vs. 6, 18 and 60, respectively, P = 0.061). Vegetarians (n = 252) and physically active (n = 379) subjects tended to pass stool more frequently than occasional (n = 553) and regular non-vegetarian (n = 395) (11.8 ± 4.5 and 12.8 ± 4.7 vs. 11.3 ± 4.7; P < 0.05) and sedentary (n = 464) and intermediately active (n = 357) subjects (13.4 ± 4.0 and 12.3 ± 4.5 vs. 10.9 ± 5.1, P = 0.080) in different age groups, respectively. Older age was associated with less frequent stool, particularly among female population. Female gender and age > 35 years were significant on multivariate analysis. Conclusions Median stool frequency in the studied population was 14/week (range 2-42) and predominant form was Bristol type IV. Older age was associated with lesser stool frequency, particularly among female subjects. (J Neurogastroenterol Motil 2013; 19:374-380)