Statistical appraisal of bed thickness patterns in turbidite successions, Andaman Flysch Group, Andaman Islands, India

The Andaman Islands, the central part of Burma–Java subduction complex, expose tectonostratigraphic units of an accretionary prism in an outer-arc setting and turbidites of a forearc setting. A number of N–S-trending dismembered ophiolite slices of Cretaceous age, occurring at different structural levels with Eocene trench-slope sediments, were uplifted and emplaced by a series of E–dipping thrusts. Subsequently, N–S normal and E–W strike-slip faults resulted in the development of a forearc basin with deposition of Oligocene and Mio-Pliocene sediments. Metapelites and metabasics of greenschist to amphibolite grade occur in a melange zone of ophiolites. The Eocene Mithakhari Group represents pelagic trench sediments and coarser clastics derived from ophiolites. Evidence of frequent facies changes, predominance of mass flow deposits, syn-sedimentary basinal disturbance and wide palaeogeographic variation indicate deposition of Eocene sediments in isolated basins of an immature trench-slope setting. Deposition of the Oligocene Andaman Flysch Group in a forearc setting is indicated by the large-scale persistence of beds, lack of small-scale lithological variation, bimodal provenance, less deformation, a well-defined submarine fan sequence and development predominantly on the eastern part of the outer arc. The Mio-Pliocene Archipelago Group includes alternations of siliciclastic turbidites and subaqueous pyroclastic flow deposits in the lower part and carbonate turbidites in the upper part, suggesting its deposition in the shallower forearc compared to the siliciclastic Oligocene sediments.

Download Full-text

Pharmacognostical and pharmacological activity of Justicia gendarussa burm.f.: a comprehensive review

International Journal of Research in Pharmaceutical Sciences ◽

10.26452/ijrps.v11i3.2475 ◽

2020 ◽

Vol 11 (3) ◽

pp. 3384-3390

Author(s):

Ashish ◽

Anjali ◽

Dixit Praveen K ◽

Nagarajan K ◽

Sahoo Jagannath

Keyword(s):

Pharmacological Activity ◽

Chemical Constituents ◽

Biological Action ◽

Andaman Islands ◽

Comprehensive Review ◽

Medicinal Value ◽

Anti Oxidant ◽

Phytochemical Constituents ◽

Pharmacologically Active ◽

Different Parts

Justicia gendarussa Burm .f. (family Acanthaceae) which is also known as willow-leaves and commonly known as Nili-Nirgundi, it is very commonly found nearby to China and its availability is very common in larger parts of India and Andaman islands. Traditionally it is used to treat various sorts of disorders such as wound healing, anti-inflammatory, anti-oxidant, antiproliferative, anti-arthritic etc. Justicia gendarussa is one of the crucial herbs which has been used in the Ayurveda. Majorly leaves parts of the plant shows the pharmacological activity but the root of the plant Justicia gendarussa is also have the important medicinal values. A large variety of pharmacologically active constituents i.e., alkaloids, flavonoids, saponin, carbohydrates, steroids, triterpenoids, carotenoids, aminoacids, tannins, phenolics, coumarines and anthaquinones are also present in this plant and they makes the plant pharmacologically important. The activity of the plant is also dependent on the solvent which is used for the extraction the various vital chemical constituents. The different- different parts of the plants having the different medicinal values also differ in the chemical values. This review is not only focused on the essential phytochemical constituents which is available in the plant but it also explains their necessary medicinal value to shows the essential biological action and phytopharmacological actions of various parts of the plant.

Download Full-text

Faculty Opinions recommendation of Comparison of residual stromal bed thickness measurement among very high-frequency digital ultrasound, intraoperative handheld ultrasound, and optical coherence tomography.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.13477033.14857144 ◽

2012 ◽

Author(s):

Jason Stahl ◽

Jason Philip Brinton

Keyword(s):

Optical Coherence Tomography ◽

High Frequency ◽

Thickness Measurement ◽

Optical Coherence ◽

Very High Frequency ◽

Handheld Ultrasound ◽

Bed Thickness ◽

Very High

Download Full-text

Doing Fieldwork in the Andamans

10.1093/oso/9780199469864.003.0003 ◽

2017 ◽

Author(s):

Philipp Zehmisch

Keyword(s):

Everyday Life ◽

Academic Discourse ◽

Andaman Islands ◽

Paradigm Shifts ◽

Political Space ◽

Anthropological Theory ◽

Local Perception ◽

The Everyday ◽

A Site

Chapter 2 contextualizes the Andaman Islands as a fieldwork location. It has two major objectives: First, it serves to introduce the reader to the Andamans as a geographical, ecological, and political space and as a site of imagination. This representation of the islands concentrates on the interplay of discourses and policies which have shaped their global, national, and local perception as well as the everyday life of the Andaman population. Second, the chapter underlines the conflation of anthropological theory, fieldwork, and biographical transformations. It demonstrates how recent theoretical trends and paradigm shifts in global and academic discourse have become enmeshed with the author’s experiences in and perceptions of the field. Elaborating on these intricate personal and professional ‘spectacles’ of the fieldworker, the author thus contextualizes the subjective conditions inherent in the production of ethnography as a type of literature.

Download Full-text