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Patel, Pooja
- Semi-Strong Form of Market Efficiency for Dividend and Bonus Announcements:An Empirical Study of India Stock Markets
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Authors
Affiliations
1 S.R. Luthra Institute of Management, MTB College Campus, Athwalines, Surat-395001, Gujarat, IN
2 S.R. Luthra Institute of Management, MTB College Campus, Athwalines, Surat–395001, Gujarat, IN
1 S.R. Luthra Institute of Management, MTB College Campus, Athwalines, Surat-395001, Gujarat, IN
2 S.R. Luthra Institute of Management, MTB College Campus, Athwalines, Surat–395001, Gujarat, IN
Source
ANVESHAK-International Journal of Management, Vol 6, No 1 (2017), Pagination: 108-121Abstract
Efficient Market Hypothesis (EMH) is predominantly a research area in the field of finance. EMH is studied worldwide to understand the share price behaviour and the same can be predicted by any means in future. Prediction of this share price behaviour helps a rational investor to earn abnormal returns from the markets. Symmetry of public information is associated with the semi-strong form of efficient market hypothesis which implies that the publicly available information is known to all the investors in the market and share prices fully reflect this information.The favourable news tends to bring a positive impact on the stock price behaviour and vice versa. Hence, the study of such corporate events can lead to predictability in the stock market which can help investors to earn abnormal returns. The present research paper has employed the event study and cross-sectional data analysis for validating the existence of semi-strong form of market efficiency in Indian stock markets pertaining to two major corporate events; 'dividend and bonus announcement'. The results of the study reveal that dividend and bonus announcements have significant impact on share prices only on 1 day pre announcement.Keywords
Efficient Market Hypothesis, Semi Strong From, Dividend, Bonus.
References
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- Influence of a Mono-Frequency Sound on Bacteria can be a Function of the Sound-Level
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Authors
Vijay Kothari
1,
Chinmayi Joshi
1,
Pooja Patel
1,
Milan Mehta
1,
Sashikant Dubey
1,
Brijesh Mishra
1,
Niral Sarvaiya
1
Affiliations
1 Institute of Science, Nirma University, Ahmedabad – 382481, Gujarat, IN
1 Institute of Science, Nirma University, Ahmedabad – 382481, Gujarat, IN
Source
Indian Journal of Science and Technology, Vol 11, No 4 (2018), Pagination:Abstract
Objectives: To investigate the effect of a mono-frequency (300 Hz) sound on the bacterium Chromobacterium violaceum at different sound levels. Methods: Chromobacterium violaceum was subjected to sonic stimulation with 300 Hz sound, at five different levels of loudness in the range of 70–89.5 dB. Effect of sound treatment was studied on cell yield and pigment production of this bacterium. Findings: Sonic stimulation was found to affect bacterial growth and quorum sensing regulated pigment (violacein) production significantly. Magnitude of this effect was found to be dependent on sound-level. The minimum critical difference required to cause any statistically significant change in bacterial response with respect to sound-level was found to be 13 dB. Growth of C. violaceum was affected more at lower sound intensity, whereas pigment production was affected more at higher sound intensity. Additional experiments with C. violaceum and Serratia marcescens indicated that even a silent speaker emitting no sound can alter bacterial growth and/or pigment production up to a minor extent. Size of the test tube in which bacteria are exposed to sonic stimulation was not found to affect the results much. Application: This study has shown that C. violaceum does respond to sonic stimulation and that the intensity of sound is an important determinant affecting magnitude of this response.Keywords
sonic stimulation, violacein, prodigiosin, quorum sensing, sound level, magnetic field effectFull Text
- Frequency-Dependent Response of Chromobacterium violaceum to Sonic Stimulation and Altered Gene Expression Associated with Enhanced Violacein Production at 300 Hz
Abstract Views :273 |
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Authors
Affiliations
1 Institute of Science, Nirma University, Ahmedabad 382 481, IN
1 Institute of Science, Nirma University, Ahmedabad 382 481, IN
Source
Current Science, Vol 115, No 1 (2018), Pagination: 83-90Abstract
In this study, Chromobacterium violaceum was subjected to sonic (100–2000 Hz) stimulation. Sound waves of 300 Hz frequency promoted bulk production of the quorum-regulated pigment, violacein. Whole transcriptome analysis indicated that a total of 342 genes (i.e. 4.63% of the whole genome) were significantly upregulated in the sonic stimulated culture. Enhanced violacein production in the sound-stimulated culture seems to have stemmed from enhanced expression of the genes involved in pentose phosphate pathway, resulting in an increased availability of erythrose-4-phosphate to be used in the synthesis of tryptophan – the precursor of violacein synthesis. This study is a good demonstration of the ability of sound waves to alter bacterial metabolism.Keywords
Altered Gene Expression, Chromobacterium violaceum, Sonic Stimulation, Violacein.Full Text
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- Effects of Aqueous Extract of Tulsi and Cardamom on Elderly Depressive Subjects - A Preliminary Clinical Study
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Authors
Affiliations
1 Sumandeep Nursing College, Sumandeep Vidyapeeth, Pipariya, Vadodara – 391760, Gujarat, IN
2 Department of Pharmacy, Sumandeep Vidyapeeth, Pipariya, Vadodara – 391760, Gujarat, IN
3 Department of Pharmacy Practice, Parul Institute of Pharmacy and Research, Parul University, Waghodia, Vadodara – 391760, Gujarat, IN
1 Sumandeep Nursing College, Sumandeep Vidyapeeth, Pipariya, Vadodara – 391760, Gujarat, IN
2 Department of Pharmacy, Sumandeep Vidyapeeth, Pipariya, Vadodara – 391760, Gujarat, IN
3 Department of Pharmacy Practice, Parul Institute of Pharmacy and Research, Parul University, Waghodia, Vadodara – 391760, Gujarat, IN
Source
Journal of Natural Remedies, Vol 21, No 3 (2021), Pagination: 245-249Abstract
An aqueous extract of Ocimum sanctum (Tulsi) and Elettaria cardamomum (Cardamom) was administered to elderly subjects suffering from depression living in selected old age home. Geriatric Depression Assessment Scale was used to assess the level of depression; based on the scale, 40 subjects were selected for the study. The subjects were divided into two groups of twenty each. Experimental group received aqueous extracts of Ocimum sanctum and cardamom for eight weeks, similarly, control group received aqueous extract of green tea leaves. Post assessment was done after eight weeks of treatment in both the control and experimental groups. Aqueous extracts of Ocimum sanctum and cardamom were found to have a significant anti depressive effect on experimental group after 8 weeks, while control group did not show any significant change. Preliminary data of the study showed a significant antidepressive activity of Ocimum sanctum and cardamom extracts.Keywords
Antidepression, Elettaria cardamomum, Ocimum sanctumFull Text