53 research outputs found
Advances in the Krapcho Decarboxylation
No full text Po. S. Poon, who received her Doctorate degree in 2007 from Venezuelan Institute of Scientific Research (IVIC), is working at IVIC as an Investigator in the Department of Chemistry. Her research encompases the synthesis of terpenoid and bioactive compounds. She was received the Paula Prize from IVIC for her high academic achievement. Manuel S. Laya obtained his MSc degree in 1997 from IVIC and is now working as Research Associate in the Department of Organic Chemistry, IVIC. He has published more than 30 papers, most of which are related to synthetic studies on terpenoid compounds. Ajoy K. Banerjee, who received his PhD in 1965 from the University of Kolkata (India), joined IVIC in 1968. Since 1982 he has been working as Senior Research Scientist. Most of his work is related to synthetic studies on terpenoid compounds (diterpenes and sesquitepenes). He teaches organic chemistry and supervises students who join IVIC for MSc or PhD degrees. Dr Banerjee is the author of two books on organic chemistry, written in Spanish, and several papers. 1. Modifications 2. General features 3. Mechanism 4. Synthetic applications 5. Conclusion 6. References This review provides a brief description of the Krapcho dealkoxycarbonylation and its recent applications in the synthesis of organic compounds and natural products. The general features of the Krapcho reaction, its mechanism and several modifications of the Krapcho reaction are discussed. </jats:p
Implementation of Traditional Medicinal Knowledge Protection under the Biodiversity Legislation in India
No full textEffects of temperature on organic constituents of coffee beans, 1972
Full text linkCoffee beans of Angola, Brazil and Columbia varieties were selected for utilization in studies designed to determine whether differences existed among them relative to extractable organic polymers (i.e., proteins, deoxyribonucleic acid, sugars, ribonucleic acid), lipids and caffeine during heating at temperatures of 30, 40, 50, 60, 70, 80 and 90 C for a period of one hour. This investigation also was designed to explore differences in the behavior of these organic polymers which might exist among different varieties of beans when they were heated at 90 C (the roasting temperature). Colorimetric and spectrophotometrie assay procedures were employed for quantitative determination of these organic polymers. Column chromatography, using diethylaminoethyl (DEAE) cellulose as an absorbent, was used to fractionate the various organic polymers.The results indicated that the percentage of soluble organic components per fresh weight of beans increased almost proportionally with the increase in temperature for the heat treatment. The Angola variety showed a marked difference from Brazil and Columbia varieties both in amounts of soluble constituents and in the molecular character of these polymers on fractionation on a DEAE column. These data suggest that the Angola coffee bean is probably a better variety from a nutritional aspect. The loss in the fresh weight of beans was in linear relationship with increase in temperature and was about the same in all the experimental varieties
TRADITIONAL KNOWLEDGE – THE CHANGING SCENARIO IN INDIA
Full text linkIndia is a party to the CBD, which came into force on 29 December 1993. It has three main objectives, namely the conservation of biological diversity, the sustainable use of its components and fair and equitable sharing of benefits arising out of the utilization of genetic resources. CBD envisages that the benefits accruing from commercial use of TK have to be shared with the people responsible for creating, refining and using this knowledge. Art 8(j) of the CBD provides for respecting, protecting and rewarding the Knowledge, Innovations and Practices (KIP) of local communities. Realizing the need to ensure that the holders of TK, which is not still in the public domain should be able to get the benefits arising from the use of such knowledge, an enabling provision has been made for protecting the TK in the Biodiversity Act, 2002. Indian Patents (Amendment) Act, 2005 also deals indirectly with the protection of TK. The main objective of protection would be to obtain recognition and some compensation for the commercial use of TK outside the community or the society, which generated it, either by excluding the unauthorised use by third parties or by ensuring a right to remuneration (or benefit sharing) for such use
Detailed structural analysis of Mallorca Cathedral's structure on a global model
Full text linkMallorca cathedral, an outstanding Gothic building showing one of the more audacious structures built in Europe during the Middle Age, has been researched by the Department of Construction
Engineering of UPC for more than 10 years. The building includes very interesting structural innovations and some specific seismic resistant devices, such as diaphragmatic arches. However, previous structural analyses have pointed out that the structure might show only limited seismic strength due to the slenderness of the structural members and the large dimension of its vaults. A refined seismic analysis is needed to understand the true seismic performance of the building.
This dissertation is a continuation of a previous one done during course 2007-2008 (Ajoy Das, 2008), consisting of a FEM non-linear analysis of typical bay structure. For the present dissertation, we analyzed the results from an already available FEM model involving the entire structure, including the entire nave, chapels, façades and towers.
The used model analyzes the response of the structure under gravity loading and earthquake considering linear and nonlinear behavior of the material.
The dissertation included the following activities: (1) Inspection and understanding of the structure.
Review of previous works regarding historical research, inspection and structural analysis; (2) Characterization of the seismic actions based on some previous works; (3) Research on past seismic performance; (4) Validating the model and using it to carry out structural analysis by means of sophisticated computer tools. Computer codes DIANA were used for this purpose. (5) Conclusions on the performance of the structure in these conditions of analyses
Management of maxillofacial trauma in emergency: An update of challenges and controversies
No full textTrauma management has evolved significantly in the past few decades thereby reducing mortality in the golden hour. However, challenges remain, and one such area is maxillofacial injuries in a polytrauma patient. Severe injuries to the maxillofacial region can complicate the early management of a trauma patient owing to the regions proximity to the brain, cervical spine, and airway. The usual techniques of airway breathing and circulation (ABC) management are often modified or supplemented with other methods in case of maxillofacial injuries. Such modifications have their own challenges and pitfalls in an already difficult situation
Detailed structural analysis of Mallorca Cathedral's structure on a global model
No full textMallorca cathedral, an outstanding Gothic building showing one of the more audacious structures built in Europe during the Middle Age, has been researched by the Department of Construction
Engineering of UPC for more than 10 years. The building includes very interesting structural innovations and some specific seismic resistant devices, such as diaphragmatic arches. However, previous structural analyses have pointed out that the structure might show only limited seismic strength due to the slenderness of the structural members and the large dimension of its vaults. A refined seismic analysis is needed to understand the true seismic performance of the building.
This dissertation is a continuation of a previous one done during course 2007-2008 (Ajoy Das, 2008), consisting of a FEM non-linear analysis of typical bay structure. For the present dissertation, we analyzed the results from an already available FEM model involving the entire structure, including the entire nave, chapels, façades and towers.
The used model analyzes the response of the structure under gravity loading and earthquake considering linear and nonlinear behavior of the material.
The dissertation included the following activities: (1) Inspection and understanding of the structure.
Review of previous works regarding historical research, inspection and structural analysis; (2) Characterization of the seismic actions based on some previous works; (3) Research on past seismic performance; (4) Validating the model and using it to carry out structural analysis by means of sophisticated computer tools. Computer codes DIANA were used for this purpose. (5) Conclusions on the performance of the structure in these conditions of analyses
Detailed structural analysis of Mallorca Cathedral's structure on a global model
Full text linkMallorca cathedral, an outstanding Gothic building showing one of the more audacious structures built in Europe during the Middle Age, has been researched by the Department of Construction
Engineering of UPC for more than 10 years. The building includes very interesting structural innovations and some specific seismic resistant devices, such as diaphragmatic arches. However, previous structural analyses have pointed out that the structure might show only limited seismic strength due to the slenderness of the structural members and the large dimension of its vaults. A refined seismic analysis is needed to understand the true seismic performance of the building.
This dissertation is a continuation of a previous one done during course 2007-2008 (Ajoy Das, 2008), consisting of a FEM non-linear analysis of typical bay structure. For the present dissertation, we analyzed the results from an already available FEM model involving the entire structure, including the entire nave, chapels, façades and towers.
The used model analyzes the response of the structure under gravity loading and earthquake considering linear and nonlinear behavior of the material.
The dissertation included the following activities: (1) Inspection and understanding of the structure.
Review of previous works regarding historical research, inspection and structural analysis; (2) Characterization of the seismic actions based on some previous works; (3) Research on past seismic performance; (4) Validating the model and using it to carry out structural analysis by means of sophisticated computer tools. Computer codes DIANA were used for this purpose. (5) Conclusions on the performance of the structure in these conditions of analyses
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