90 research outputs found
Caste and Nature
No full textRarely do Indian environmental discourses examine nature through the lens of caste. Whereas nature is considered as universal and inherent, caste is understood as a constructed historical and social entity. Mukul Sharma shows how caste and nature are intimately connected. He compares Dalit meanings of environment to ideas and practices of neo-Brahmanism and certain mainstreams of environmental thought. Showing how Dalit experiences of environment are ridden with metaphors of pollution, impurity, and dirt, the author is able to bring forth new dimensions on both environment and Dalits, without valourizing the latter’s standpoint. Rather than looking for a coherent understanding of their ecology, the book explores the diverse and rich intellectual resources of Dalits, such as movements, songs, myths, memories, and metaphors around nature. These reveal their quest to define themselves in caste-ridden nature and building a form of environmentalism free from the burdens of caste. The Dalits also pose a critical challenge to Indian environmentalism, which has, until now, marginalized such linkages between caste and nature.</p
Evaluating levy flight parameters for random searches in a 2D space
No full textThesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2013.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Cataloged from student-submitted PDF version of thesis.Includes bibliographical references (pag 23).It is experimentally known that the flight lengths of random searches by foragers such as honey bees statistically belong to a power law distribution. Optimality of such random searches has been a topic of extensive research because knowing their optimal parameters may help applied sciences. Viswanathan et al. have shown the inverse-square power law to be the optimal law for such random searches. This thesis explores the capability of the model presented in such that it can be applied to Unmanned Autonomous Vehicles (UAVs). The thesis also identifies the minimum flight length, lmin, as an important factor that needs to be controlled based on the UAV's sensor range. We present a theoretical lmin as an explicit function of the sensor range, rv, and an estimated target density, p.by Mukul Kumar Singh.S.B
Concha Bullosa Osteoma: An Unusual Cause of Headache
No full textABSTRACT
Aim and background
Osteomas are common benign tumors of the paranasal sinuses, but are usually asymptomatic and found as a coincidental finding during routine radiological investigations. The aim is to demonstrate typical radiological findings of osteomas and demonstrate rare occurrence of osteoma in middle turbinate.
Case report
Patient presenting with recurrent headaches, left-sided facial pain, and intermittent nasal obstruction was evaluated using Philips Brilliance 40-multislice computed tomography scanner, which showed bilateral maxillary and ethmoid sinusitis with bilateral fluid-filled concha bullosa with left-sided concha bullosa showing a well-defined lesion of bone attenuation suggestive of osteoma.
Conclusion
Osteomas can rarely occur in nasal turbinates and may be symptomatic requiring endoscopic/surgical removal.
Clinical significance
Radiological investigations are diagnostic for osteomas and play an important role in preoperative planning. Osteomas arising from the turbinates are more easily accessible by endoscopy than sinus osteomas; hence, removal carries less risk. Therefore, it is important to diagnose nasal osteoma when it is small in size, follow it up, and resect it when its size is appropriate for endoscopic surgery.
How to cite this article
Singh P, Mittal MK, Mathur NN, Sinha M. Concha Bullosa Osteoma: An Unusual Cause of Headache. Clin Rhinol An Int J 2017;10(1):25-27.
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Phytohormonal regulation of S-adenosylmethionine synthetase and S-adenosylmethionine levels in dwarf pea epicotyls
No full textAbstractA significant stimulation (2- to 2.5-fold) of AdoMet synthetase was witnessed in glibberellicd acid (GA3, 1μM)-treated epicotyls of the dwarf pea (Pisum sativum). This was accompanied by a 2.4-fold increase in the endogenous pool of S-adenosylmethionine. Both abscisic acid (10 μM) and cycloheximide (20 μgml) inhibited the GA3-mediated enhancement of AdoMet synthetase activity. Three isozymes of AdoMet synthetase were detected in GA3-treated epicotyls, whereas a single activity peak was observed in controls. Thus, GA3 seems to control the induction of two new isozymes of AdoMet synthetase in the dwarf pea. By contrast, the tall pea exhibited three isozymes of AdoMet synthetase even in the absence of GA3 treatment. High concentration of L-methionine (2 mM) mimicked the GA3-elicited induction of two new isozymes of AdoMet synthetase in dwarf pea epicotyls
Author Correction: Native diversity buffers against severity of non-native tree invasions (Nature, (2023), 621, 7980, (773-781), 10.1038/s41586-023-06440-7)
No full textCorrection to: Nature Published online 23 August 2023 In the version of the article initially published, Stanislaw Miscicki’s name incorrectly appeared as Miscicki Stanislaw. Additionally, the affiliation for Thomas T. Ibanez has been updated to “AMAP, University of Montpellier, CIRAD, CNRS, INRAE, IRD, Montpellier, France”, and the second affiliation for Sharif A. Mukul has been updated to “Department of Environment and Development Studies, United International University, Dhaka, Bangladesh”. The corrections have been made to the HTML and PDF versions of the article. © 2023, The Author(s)
Full transcript: Agyeya and the multitudes he contained
No full textAuthor and journalist Akshaya Mukul has recently published a book about the Hindi writer Sachchidananda Hirananda Vatsyayan, better known as Agyeya, titled Writer, Rebel, Soldier, Lover: The Many Lives of Agyeya. The following is a transcript of an interview with Mukul, conducted by Trisha Gupta, journalist, critic and professor at the Jindal School of Journalism and Communication”?. They discuss the book and the ‘multitudes’ that the writer contained. The following is a transcript of the interview. It has been edited for style and clarity
Problems in Task Scheduling in Multiprocessor System
No full textThis Contemporary computer systems are multiprocessor or multicomputer machines. Their efficiency depends on good methods of administering the executed works. Fast processing of a parallel application is possible only when its parts are appropriately ordered in time and space. This calls for efficient scheduling policies in parallel computer systems. In this work deterministic problems of scheduling are considered. The classical scheduling theory assumed that the application in any moment of time is executed by only one processor. This assumption has been weakened recently, especially in the context of parallel and distributed computer systems. This monograph is devoted to problems of deterministic scheduling applications or tasks according to the scheduling terminology requiring more than one processor simultaneously. We name such applications multiprocessor tasks. In this work the complexity of open multiprocessor task scheduling problems has been established. Algorithms for scheduling multiprocessor tasks on parallel and dedicated processors are proposed. For a special case of applications with regular structure which allow for dividing it into parts of arbitrary size processed independently in parallel, a method of finding optimal scattering of work in a distributed computer system is proposed. The applications with such regular characteristics are called divisible tasks. The concept of a divisible task enables creation of tractable computation models in a wide class of computer architectures such as chains, stars, meshes, hypercubes, multistage networks. Divisible task method gives rise to the evaluation of computer system performance. Examples of such performance evaluation are presented. This work summarizes earlier works of the author as well as contains new original results. Mukul Varshney | Jyotsna | Abhakiran Rajpoot | Shivani Garg "Problems in Task Scheduling in Multiprocessor System" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017, URL: https://www.ijtsrd.com/papers/ijtsrd2198.pd
Tubular duplication of colon and terminal ileum in a female child, case report, review of literature and proposal of a new classification
No full textAbstractA case of a four and a half years old girl with total colon and terminal ileal duplication with a normally situated anus, vestibular fistula, double bladder and urethra with a unique feature of loop duplication of terminal ileum and part of the colon is reported. A proposal is made for a new simplified classification
Author Correction: Native diversity buffers against severity of non-native tree invasions.
No full textCorrection to: Nature Published online 23 August 2023 In the version of the article initially published, Stanislaw Miscicki’s name incorrectly appeared as Miscicki Stanislaw. Additionally, the affiliation for Thomas T. Ibanez has been updated to “AMAP, University of Montpellier, CIRAD, CNRS, INRAE, IRD, Montpellier, France”, and the second affiliation for Sharif A. Mukul has been updated to “Department of Environment and Development Studies, United International University, Dhaka, Bangladesh”. The corrections have been made to the HTML and PDF versions of the article
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