Think it over     

Mohan Delampady  Milind Watve 《Resonance》1997,2(10):69-71

This section of Resonanceis meant to raise thoughtprovoking, interesting, or just plain brainteasing questions every month, and discuss answers a few months later. Readers are welcome to send in suggestions for such questions, solutions to questions already posed, comments on the solutions discussed in the journal, etc. to ResonanceIndian Academy of Sciences, Bangalore 560 080, with “Think It Over” written on the cover or card to help us sort the correspondence. Due to limitations of space, it may not be possible to use all the material received. However, the coordinators of this section (currently R Nityananda and C S Yogananda) will try and select items which best illustrate various ideas and concepts, for inclusion in this section.  相似文献   

Assessment of Oxidative Stress Markers and Carotid Artery Intima-Media Thickness in Elderly Patients Without and with Coronary Artery Disease     

Murali Krishna Madisetty  Konda Kumaraswami  Shivakrishna Katkam  Kankanala Saumya  Y. Satyanarayana Raju  Naval Chandra  Maddury Jyotsna  Sujatha Patnaik  Vijay Kumar Kutala 《Indian journal of clinical biochemistry : IJCB》2016,31(3):278-285

We aimed to assess whether measuring carotid intima-media thickness (CIMT) and oxidative stress markers such as protein carbonyls, malondialdehyde, nitrate and glutathione in plasma of elderly patients without and with coronary artery disease (CAD) identifies early risk for CAD. A total of 50 cases with cardiovascular risk factors over the age of 60 years without CAD, and 50 patients with angiographically documented CAD over the age of 60 years were included in the study. Control group consists of 200 healthy individuals without the risk factors. Demographic details were obtained from all the subjects and CIMT measured by high frequency ultrasound and oxidative stress markers such protein carbonyls, malondialdehyde and total glutathione were determined in plasma by spectrophotometric methods. The distribution of cardiovascular risk factors in without CAD and CAD cases were smokers (16 vs 56 %), hypertension (26 vs 64 %), diabetes (16 vs 56 %) and dyslipidemia (18 vs 58 %) and positive family history (4 vs 38 %). None of the control group had any cardiovascular risk factors. Among the CAD cases, 16 % had single vessel disease, 44 % had double vessel disease and 40 % had triple vessel disease. The CIMT was significantly increased in CAD cases as compared to cases without CAD and healthy controls. On the other hand, CIMT was significantly increased in cases without CAD as compared to healthy controls. CIMT also increased with the duration of diabetes in patients without CAD and severity of disease in CAD cases. The levels of oxidants like plasma malondialdehyde, protein carbonyls, were significantly elevated and antioxidant glutathione levels and nitrate levels were significantly reduced in cases with and without CAD as compared to healthy controls. Oxidative stress markers and CIMT was found to be significantly increased in patients with cardiovascular risk factors like diabetes, family history of CAD, dyslipidemia, hypertension and smoking when compared to patients without risk factors. In patients with diabetes, CIMT increased as duration of disease increases and also in poorly controlled diabetes. In CAD group, when number of vessel involvement (severity of coronary disease) increases, the CIMT also increases confirming that CIMT is a quantifiable risk factor for CAD.  相似文献   

Homocysteine status and acute myocardial infarction among Tamilians     

T. Angeline  Rita Mary Aruna  K. Ramadevi  G. Mohan  Nirmala Jeyaraj 《Indian journal of clinical biochemistry : IJCB》2005,20(1):18-20

Myocardial infarction is a major consequence of coronary artery disease. Apart from the traditional risk factors of myocardial infarction, recently many reports have suggested that hyperhomocysteinemia plays important role in myocardial infarction. Plasma homocysteine level was determined in 60 myocardial infarction patients and in 35 age matched healthy individuals. Statistically significant differences (p<0.01) were observed in the mean of plasma homocysteine concentrations between the acute myocardial infarction patients (24.59±6.14 mM/L) and in normal healthy individuals (13.73 ±3.54 mM/L). The level of homocysteine in myocardial infarction patients is significantly high (p <0.01) among myocardial infarction patients when compared to that of the controls. The the present study indicates a strong association between plasma homocysteine and acute myocardial infarction among Tamilians, thus implying plasma homocysteine as a possible risk factor for myocardial infarction.  相似文献   

Platelet mono amine oxidase and plasma dopamine beta hydroxylase activity in patients with Schizophrenia     

B. S. Sridhara Rama Rao  K. S. Mohan  M. K. Sapru  P. Lakshmi Reddy  P. S. Gopinath 《Indian journal of clinical biochemistry : IJCB》1989,4(1):47-49

The activity of monoamine oxidase in platelets and of dopamine beta hydroxylase in plasma was determined in patients with schizophrenia. The activity of both the enzymes was found to be considerably decreased in patients with schizophrenia when compared to the levels noted in healthy subjects.  相似文献   

Markov Chain Monte Carlo methods     

K. B. Athreya  Mohan Delampady  T. Krishnan 《Resonance》2003,8(12):18-32

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E-learning services acceptance in higher educational institutes: A case study in Brunei     

Aqilah Nawwarah H.A. Rajak  Dk. Nurul Najiah Pg Abu Bakar  Nur Dina Azyyati Lajim  Nurul Hikmatull Su’aidah Haji Kamarulzaman  Siti Nur Fakhrinah Haji Karim  Mohammad Nabil Almunawar 《Education and Information Technologies》2018,23(6):2341-2361

This research studies on the e-learning services acceptance in higher education institutions in Brunei Darussalam. This research has seven hypotheses, relating to independent, intermediary, and dependent variables. The independent variables include lecturer’s characteristics, design of learning contents, teaching materials, and playfulness; while the intermediary variables are perceived benefits and perceived ease of use. On the other hand, the dependent variable in this research is the intention to use e-learning. Multiple regression analysis were conducted to test the hypotheses proposed. Data analysis from this research has confirmed that the lecturer’s characteristics, teaching materials, perceived ease of use and the intention to use e-learning corresponds to the perceived benefits. Meanwhile, the design of learning content and the intention to use e-learning are positively related to the perceived ease of use and lastly, the variable playfulness is positively related to the intention to use e-learning.  相似文献   

Electron Paramagnetic Resonance imaging     

Sankaran Subramanian  Murali C. Krishna 《Resonance》2016,21(7):597-619

EPR (Electron Paramagnetic Resonance) imaging is particularly useful in monitoring hypoxic zones in tumors which are highly resistant to radiation and chemotherapeutic treatment. This first part of the article covers aspects of CW (continuous wave) imaging with details of FT (pulsed Fourier Transform)-EPR imaging covered in Part 2, to be published in the next issue of Resonance.  相似文献   

!Pressure melting and skating     

Ravi Divakaran  G. S. Ranganath  Mohan Devadas  J. Chandrasekhar  Rajaram Nityananda 《Resonance》1996,1(5):71-78

In this section of Resonance, we invite readers to pose questions likely to be raised in a classroom situation. We may suggest strategies for dealing with them, or invite responses, or both. “Classroom” is equally a forum for raising broader issues and sharing personal experiences and viewpoints on matters related to teaching and learning science.  相似文献   

Family planning (re)defined: how young Nepalese women understand and negotiate contraceptive choices     

Iccha Basnyat  Mohan J. Dutta 《亚洲交流杂志》2013,23(4):338-354

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(2) Libraries in Jordan     

Kamel Asali 《International Information and Library Review》2013,45(2):171-183

Abstract

Library automation assumed a great deal of importance in libraries in the mid 1960’s. Since then it has become a household word in librarianship. Library automation in university libraries in Ghana is a relatively new concept. Even though computers have been installed in the three university libraries in Ghana, computerization has not had much impact on the services provided by these libraries. This paper reviews the computerization projects in the university libraries in Ghana, with a particular reference to the Balme Library of the University of Ghana. Reasons for automation, areas of application and problems associated with automation are discussed. Also highlighted are barriers militating against successful university library automation, like financial problems, attitudinal problems, lack of co-operation among university libraries, hardware and software problems and personnel problems. Recommendations are made for the improvement of automation at the university libraries in Ghana. These include evaluation of existing systems, properly planned automation project, financial support and co-operation among the university libraries.  相似文献