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Choudhary, Ashish
- Anti-Oxidant Activity of Novel 5-Substituted Arylidene-3-Substituted- Benzyl-Thiazolidine-2, 4-Diones
Abstract Views :192 |
PDF Views:1
Authors
Affiliations
1 Faculty of Pharmacy, Babu Banarasi Das National Institute of Technology and Management, Lucknow 227105 (UP), IN
1 Faculty of Pharmacy, Babu Banarasi Das National Institute of Technology and Management, Lucknow 227105 (UP), IN
Source
Asian Journal of Research in Chemistry, Vol 4, No 1 (2011), Pagination: 120-122Abstract
A series of 5-substituted-arylidene-3-substituted-benzyl-thiazolidine-2, 4-dione derivatives were synthesized from thaizolidinedione and substituted benzyl chloride followed by the addition of substituted aromatic aldehydes. All the compounds 1(a)-1(e) and 2(a)-2(c) were screened for their in vitro antioxidant activity using DPPH method. The anisaldehyde based thiazolidinedione compounds 1(a) and 2(a) displayed good activity comparable to those of standard.
Keywords
Thiazolidine-2, 4-Dione, Heterocyclic Compounds, Antioxidant Activity.
- Assessment of Heavy Metal Toxicity in Four Species of Freshwater Ciliates (Spirotrichea:Ciliophora) from Delhi, India
Abstract Views :265 |
PDF Views:62
Authors
Jeeva Susan Abraham
1,
S. Sripoorna
1,
Ashish Choudhary
1,
Ravi Toteja
1,
Renu Gupta
2,
Seema Makhija
1,
Alan Warren
3
Affiliations
1 Acharya Narendra Dev College, University of Delhi, Delhi 110 019, IN
2 Maitreyi College, University of Delhi, Delhi 110 021, IN
3 Department of Life Sciences, Natural History Museum, London, SW7 5BD, GB
1 Acharya Narendra Dev College, University of Delhi, Delhi 110 019, IN
2 Maitreyi College, University of Delhi, Delhi 110 021, IN
3 Department of Life Sciences, Natural History Museum, London, SW7 5BD, GB
Source
Current Science, Vol 113, No 11 (2017), Pagination: 2141-2150Abstract
In vitro laboratory experiments were conducted to determine the toxicity (per cent survival and LC50) of essential and non-essential heavy metals (cadmium, copper, nickel, lead and zinc) in four spirotrich ciliates: Euplotes sp., Notohymena sp., Pseudourostyla sp. and Tetmemena sp. isolated from three different freshwater ecosystems in the Delhi region, India. The toxicity of the heavy metals was found to vary among the different ciliates. Copper was most toxic (24 h-LC50 value ranged between 0.125 and 0.74 mg/l) and zinc was least toxic (24 h LC50 value ranged between 46.98 and 144.32 mg/l) to each of the ciliates. Of the four ciliates, Notohymena sp. had the highest tolerance limit to three heavy metals (Cu, Cd and Pb) out of the five tested. This study shows the high potentiality of using freshwater ciliates for monitoring the intensity and potency of ecological damage caused by heavy metals in aquatic ecosystems.Keywords
Ciliates, Freshwater, Heavy Metals, Toxicity.Full Text
References
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- Self-Perceived Competence of Contemporary Restorative Practices of Dental Students in North India
Abstract Views :207 |
PDF Views:104
Authors
Affiliations
1 Department of Conservative Dentistry and Endodontics, IGGDC JAMMU, Jammu, Jammu & Kashmir – 180005, IN
2 Registrar, Department of Conservative Dentistry and Endodontics, IGGDC JAMMU, Jammu, Jammu & Kashmir – 180005, IN
3 Private Practitioner, General Dentistry, New Delhi –100008, Delhi, IN
4 Department of Periodontology, Teerthanker Mahaveer Dental College and Research Centre, Moradabad–244003, Uttar Pradesh, IN
1 Department of Conservative Dentistry and Endodontics, IGGDC JAMMU, Jammu, Jammu & Kashmir – 180005, IN
2 Registrar, Department of Conservative Dentistry and Endodontics, IGGDC JAMMU, Jammu, Jammu & Kashmir – 180005, IN
3 Private Practitioner, General Dentistry, New Delhi –100008, Delhi, IN
4 Department of Periodontology, Teerthanker Mahaveer Dental College and Research Centre, Moradabad–244003, Uttar Pradesh, IN
Source
International Journal of Medical and Dental Sciences, Vol 10, No 1 (2021), Pagination: 1938-1944Abstract
Background: There has been a paradigm shift in the restorative dentistry practiced in the clinics with an increased share of resin-composites in contrast to dental amalgam due to various factors, however, this has not found its way into the Indian dental school curriculum. Aim: To evaluate the self-perceived competence of contemporary restorative practices of dental students in North India. Materials and Methods: 232 dental students from 4 colleges in North India completed a survey comprising 11 polar questions about their perception of contemporary restorative dental practice and their curriculum update regarding the same. Further, the collected data was tabulated and finally extracted data was subjected to descriptive analysis using Chi-square test. Results: All 11 questions showed statistically significant responses. Only 15.5% of students thought that the current curriculum of restorative dentistry was adequate. Moreover, only 20.7% of the respondents were confident about using rubber dam for isolation. About 93.1% felt that the quality of their composite restorations was not at par with those seen on social media. A clear majority of 91.4% felt that the maximum uploads of restorative dentistry involved composite restorations. A huge number of 91.45% did not use rubber dam for isolation in composite restorations. 79.3% students felt that the current curriculum is not teaching them about the various instruments, and developing their skills about instrumentation and operative procedures of composite restorations matching the trending composite practices. Conclusion: Considering the results of this study as the student’s mandate will help shape the guidelines for possibly a new curriculum of conservative dentistry in India.
Keywords
Conservative dentistry, restorations, dental education, teachingConservative dentistry, restorations, dental education, teaching, resin-base composites, dental amalgam.Full Text
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