Think it Over     

K. S. Bhanu  M. N. Deshpande 《Resonance》2014,19(2):190-190

This section of Resonance presents thought-provoking questions, and discusses answers a few months later. Readers are invited to send new questions, solutions to old ones and comments, to ‘Think It Over’, Resonance, Indian Academy of Sciences, Bangalore 560 080. Items illustrating ideas and concepts will generally be chosen.  相似文献   

How do wings generate lift?     

M. D. Deshpande  M. Sivapragasam 《Resonance》2017,22(1):61-77

How lift is generated by a moving wing is understood satisfactorily. But the rigorous explanation requires elaborate theoretical background, and hence there are many simpler explanations in the popular literature. In the first part of this article, some such popular models are discussed after briefly dealing with some required preliminary ideas. The concluding part of the article will deal with some simple quantitative models and then tie up many of these simple ideas and propositions together to the rigorous momentum conservation principle placing these popular models in perspective.  相似文献   

Tools of the profession submission (for AIAEE) European Seminar in Extension Education perspective of a first-time seminar participant     

Satish Verma 《The Journal of Agricultural Education and Extension》2013,19(4):255-258

Abstract

The threats to traditional cultural landscapes and the concomitant demands from society for remedial landscape management represent a new challenge for agricultural education. The research described here examined the extent to which relevant landscape management skills and knowledge are transferred to would-be farmers (if at all) within the Austrian agricultural school system. A plurilateral approach was taken, involving a standardised text evaluation of curricula (as defined in legislative documents), examination of further vocational training programmes for teachers, and investigation of the actual teaching situation in selected schools. This combination of methods produced a comprehensive overview of the situation in agricultural schools and academies with regard to landscape management teaching. The teaching programmes prescribed by law and the actual programmes carried out by teachers were compared with a theoretical ‘best-case’ programme for teaching landscape management, and this revealed considerable shortcomings in current teaching. The research also identified potential constraints to the integration of landscape management elements within the agricultural school system.  相似文献   

Diagnostic Value of PCR in Genitourinary Tuberculosis     

Narotam Sharma  Veena Sharma  Prem Raj Singh  Shivani Sailwal  Rajeev S. Kushwaha  Rajesh K. Singh  Satish C. Nautiyal  Pankaj Mishra  Tariq Masood  R. K. Singh 《Indian journal of clinical biochemistry : IJCB》2013,28(3):305-308

Genitourinary tuberculosis is a disease of the genitourinary system which includes the entire urinary tract and reproductive system. Genital tuberculosis is an important cause of female infertility, especially in developing nations like India. In the present study, a total of 257 clinical specimens comprising of endometrial biopsy (109), endometrial curetting (42), menstrual blood (8), semen (17), placenta (11) and urine (70) were collected from patients and subjected for PCR, Culture and AFB detection. The endometrial biopsy, endometrial curetting, menstrual blood, semen, placenta, urine showed 30.2, 45.2,12.5, 5.8, 27.2, 31.4 %, positivity rate for tuberculosis by PCR, 7.3, 9.5, 25.0, 0, 9, 8.5 % by culture and 1.8, 2.3, 0, 0, 0, 2.8 % respectively by AFB smear. Being a novel, rapid technique, PCR is the method of choice for rapid diagnosis and management of genitourinary tuberculosis shared with the other concerned tests. This study reveals that genital tuberculosis can occur in any age group, however, the majority of patients were from reproductive age (nearly 75 % of them were from 20–45 years of age) group.  相似文献   

Tsunamis     

Satish R. Shetye 《Resonance》2005,10(2):8-19

Tsunamis are surface gravity waves that are triggered due to perturbation of the ocean floor. The tsunamis that occurred in the Indian Ocean on 26 December 2004 were due to an earthquake off the coast of Sumatra. Sea level variations associated with this event are summarized after a brief introduction to tsunamis.  相似文献   

A Further Coin Tossing Experiment     

K. S. Bhanu  M. N. Deshpande 《Teaching Statistics》2004,26(3):92-93

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A Random Variable Related to the Inversion Vector of a Partial Random Permutation     

Kavita Laghate  M. N. Deshpande 《Teaching Statistics》2005,27(1):24-25

In this article, we define the inversion vector of a permutation of the integers 1, 2, . . . , n. We set up a particular kind of permutation, called a partial random permutation. The sum of the elements of the inversion vector of such a permutation is a random variable of interest.  相似文献   

Immunodiagnosis of tuberculosis: An update     

A. S. Bhatia  Satish Kumar  B. C. Harinath 《Indian journal of clinical biochemistry : IJCB》2003,18(2):1-5

Tuberculosis is still a major health problem in most developing countries and its incidence is rising in many developed countries. This resurgence has been attributed to the HIV epidemic and TB has been declared as a global health emergency by WHO in 1993. The diagnosis of tuberculosis mainly depends upon initial clinical suspicion and radiographic findings with subsequent bacteriological confirmation by sputum smear examination and culture. Lack of sensitivity in smear examination, non specificity of radiological findings, extended tum around time ofMycobacterium tuberculosis culture and difficulties in diagnosing paucibacillary, childhood and extrapulmonary tuberculosis has necessitated to explore the utility of immunodiagnosis of tuberculosis as a convenient and cost effective test to supplement clinical information for definite diagnosis. Many commercial tests are available in the market for diagnosis of TB. Most of these tests are based on the detection of IgG, IgA and IgM antibodies to specific mycobacterial antigen or mixture of antigens. Indigenous immunoassay systems have explored excretory-secretory ES-31 mycobacterial antigen for immunodiagnosis of TB. Many a time there is lack of consistent elevation in all the three Ig classes in active infection thus making it more important to determine the ideal antibody isotype assay for reliable diagnosis of tuberculosis and to save the costs of the patient for unnecessary investigations.  相似文献   

Serodiagnosis of tuberculosis using two ELISA systems     

Swati Banerjee  Sonika Gupta  Niraj Shende  Satish Kumar  Bhaskar C. Harinath 《Indian journal of clinical biochemistry : IJCB》2003,18(2):48-53

Serodiagnosis by ELISA has been widely explored over the years, in the diagnosis of tuberculosis. Two ELISA systems were evaluated for detection of mycobacterial antibodies in pulmonary and extra pulmonary tuberculosis. The two test assays explored were ERBA LISA (TB IgG) test (Anda Biologicals) which uses A60 antigen complex found in the cytosol of typical and atypical mycobacteria, and SEVA TB (IgG) ELISA, which uses a 31 kDa, glycoprotein antigen purified fromM. tb H₃₇Ra culture filtrate. Sera from 98 proven tuberculosis [pulmonary TB (48), tuberculous lymphadenopathy (30), tuberculous meningitis (15) & genitourinary TB (5)] were studied along with 32 healthy controls. The overall positivity obtained using ERBA LISA (TB IgG) test and SEVA TB (IgG) ELISA test was 72.9% and 91.6% in pulmonary tuberculosis, 43.3% and 76.6% in tuberculous lymphadenopathy respectively. The sensitivity of ERBA LISA test in tuberculous meningitis and genito-urinary TB was significantly low (26.6% & 40% respectively) compared to sensitivity obtained using SEVA TB ELISA (86.6% & 60% respectively) with overall specificity of 60% and 87.5%. Thus SEVA TB IgG ELISA test was found to be more sensitive than ERBA LISA in detecting IgG antibodies in tuberculous sera, in particular in extra pulmonary tuberculosis cases.  相似文献   

Intransitive Dice     

M. N. Deshpande 《Teaching Statistics》2000,22(1):4-5

In a recent issue of Teaching Statistics, an intransitive dice competition was published. In this article some further interesting results about such dice are presented.  相似文献