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Oldest Asian Record of Snapping Shrimps(Malacostraca:Alpheidae)from the Kutch Basin,Western India and Associated Biota:Biostratigraphic,Paleoenvironmental and Paleoecological Significance

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Acta Geologica Sinica(English Edition) 2022年第6期96卷 1867-1883页

作者： Vivesh V.KAPUR Kamlesh KUMAR Pranav J.PANDYA Amit KGHOSH Arindam CHAKRABORTY anupam sharma Gaurav CHAUHAN M.G.THAKKAR Birbal Sahni Institute of Palaeosciences 53University RoadLucknow 226007India Department of Biology Shri R.R.Lalan CollegeBhujKachchh DistrictGujaratIndia Institute of Earth Sciences Academia SinicaTaipeiTaiwan 11529China Department of Earth and Environmental Science K.S.K.V.Kachchh UniversityBhujKachchh DistrictGujaratIndia

The oldest Asian record of alpheid shrimps,assigned to genus Alpheus,based on snapping claw fingertips from the Miocene Khari Nadi Formation in the Kutch Basin,western India reported herein,extends the fossil record of the family Alpheidae from Asia by~22 million years.An early Miocene(Aquitanian)age is estimated based on the associated assemblage of calcareous nannofossils,Sphenolithus disbelemnos,Cyclicargolithus floridanus,and Reticulofenestra haqii.The co-occurring microbiota includes bony fish otolith remains,identified as“genus Gobiidarum”,isolated teeth of Dasyatis rays,Sphyrna sharks,and teleosts,ctenoid and placoid scales,ostracods,belonging to the genera Paractinocythereis,Alocopocythere,Ruggieria,Aglaiocypris,Bairdoppilata,and echinoid spines.Taken together,the microfossil assemblage and data from chemical analyses using Energy Dispersive Spectroscopy,X-Ray Diffraction and Wavelength Dispersive X-Ray Fluorescence of host and associated lithologies suggests prevalence of a shallow(neritic)to coastal marine(intertidal)depositional paleoenvironment.The present investigation also provides the oldest fossil evidence on the co-occurrence of Alpheus and gobiids(based on otoliths)that strongly advocates that the mutualistic association between these animal groups had developed by the Aquitanian.

关键词： biostratigraphy Crustacea Caridea Elasmobranchs Gobiidae invertebrate and vertebrate paleontology nannofossils Oligocene-Miocene Indian subcontinent

Role of Different Moisture Sources in Driving the Western Himalayan Past-glacier Advances

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Journal of Atmospheric Science Research 2023年第3期6卷 1-19页

作者： Prachita Arora Sheikh Nawaz Ali anupam sharma Birbal Sahni Institute of Palaeosciences Lucknow226007India Academy of Scientific and Innovative Research Ghaziabad201002India

The fragmented pattern and the rapidly declining preservation of older glacial features/evidences limits the precision,with which glacial chronologies can be established.The challenge is exacerbated by the scarcity of datable material and limitations of dating methods.Nevertheless,the preserved glacial landforms have been fairly utilized to establish glacial chronologies from different sectors of the Indian Himalayas.The existing Himalayan glacial chrono-stratigraphies have revealed that in a single valley,past glacial advances rarely surpass four stages.Thus,local and regional glacial chronologies must be synthesized to understand glacial dynamics and potential forcing factors.This research presents an overview of glacier responses to climate variations revealed by glacial chrono-stratigraphies in the western Indian Himalayan region over the Quaternary(late).The synthesis demonstrated that,although the glacial advances were sporadic,glaciers in western Himalayas generally advanced during the Marine isotope stage(MIS)-3/4,MIS-2,late glacial,Younger Dryas(YD)and Holocene periods.The Holocene has witnessed multiple glacial advances and the scatter is significant.While previous glacial research revealed that Himalayan glaciers were out of phase with the global last glacial maximum(gLGM),weak Indian Summer Monsoon(ISM)has been implicated(ISM was reduced by roughly 20%).Recent research,however,has shown that gLGM glaciation responded to the global cooling associated with the enhanced mid-latitude westerlies(MLW).Further,the magnitude of gLGM glacier advance varied along and across the Himalayas particularly the transitional valleys located between the ISM and MLW influence.It is also evident that both the ISM and MLW have governed the late Quaternary glacial advances in the western Himalayan region.However,the responses of glaciers to ISM changes are more prominent.The insights gained from this synthesis will help us understand the dynamics of glacier response to climate change,which will be valuable for future climat

关键词： Glacial chrono-stratigraphy Dating technique limits Climate drivers Western Himalaya India

Textural Characteristics and Depositional Environment of a Late Quaternary Alluvial Plain of Haryana

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Open Journal of Geology 2022年第11期12卷 870-882页

作者： Tarasha Chitkara O. P. Thakur anupam sharma Department of Geology Kurukshetra University Kurukshetra Haryana India Birbal Sahni Institute of Palaeosciences Lucknow Uttar Pradesh India

The present study deals with the textural characteristics of the sediments from the exposed palaeochannel situated at Dhyangla village near Ladwa, district of Kurukshetra in north-western Haryana. It is a part of vast alluvial plains of India. Samples were taken from a 3 m thick exposed section. Grain size distribution and Palynofacies analyses of these sediments were carried out to study their textural parameters and the organic matter content respectively. Sediments are mostly fine to medium grained sand with silt percentage increasing upwards in the section. These sediments are mostly unimodal showing the grain size population controlled by a single type of grain size, mostly sand. Further the sand samples are moderately well sorted and mesokurtic in nature. Samples with silt are poorly sorted and leptokurtic with positive skewness, denoting those sediments have already sorted elsewhere in the high energy environment and are now transported and modified by the low energy environment. Palynofacies analysis also shows the presence of amorphous particles in the silt samples which indicate low energy environment of the sequence while presence of black debris in the sand samples indicates high energy depositions environment.

关键词： Alluvial Plains Palaeoenvironment Palynofacies Textural Analysis

Correlation between tear fluid and serum vitamin D levels

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Eye and Vision 2016年第1期3卷 178-182页

作者： Swaminathan Sethu Rohit Shetty Kalyani Deshpande Natasha Pahuja Nandini Chinnappaiah Aarti Agarwal anupam sharma Arkasubhra Ghosh GROW Research Laboratory Narayana Nethralaya Foundation#258/A Hosur RoadNarayana Health CityBommasandra560099 BangaloreIndia Cornea and Refractive Surgery Division Narayana NethralayaBangaloreIndia

Background:Vitamin D deficiency is associated with a range of systemic diseases including ocular disorders.The objective of this study is to measure tear vitamin D levels and investigate the correlation between serum and tear vitamin D levels.Methods:A total of 48 healthy volunteers without any systemic and ocular disease were recruited for this observational cohort study.Serum was collected using clot activator coated Vacutainer®Plus tubes.Tear fluid was collected using Schirmer’s strips.Serum and tear total 25-hydroxyvitamin D levels were measured by competitive chemiluminescent ELISA and the correlation between the levels were studied.Results:The measured serum 25-hydroxyvitamin D level ranged between 3.3 and 27.5 ng/ml(Mean±SEM,9.4±0.7 ng/ml;Median 8.4 ng/ml).Significantly(p<0.0001)higher level of 25-hydroxyvitamin D was detected in the tears(Mean±SEM,17.0±1.6 ng/ml;Range 3.2–45.8 ng/ml;Median,16.3 ng/ml)compared to serum.An average of~2 fold(Mean±SEM,1.9±0.2;Range 0.4–5.8;Median,1.7)higher 25-hydroxyvitamin D was observed in tears compared to serum in the subjects.In addition,a positive correlation was observed between serum and tear 25-hydroxyvitamin D levels(r=0.5595;p<0.0001).Conclusions:A higher level of 25-hydroxyvitamin D was observed in the tear fluid compared to that of the serum.It would be beneficial to consider tear vitamin D levels to study its role with reference to ocular surface diseases.

关键词： Vitamin D 25-hydroxyvitamin D 1,25-dihydroxyvitamin D Tears Serum

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维普期刊数据库

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关于草药标准化的研究综述(英文)

中西医结合学报 2012年第10期10卷 1077-1083页

作者： Vandana Garg Vir Ji Dhar anupam sharma Rohit Dutt Department of Pharmaceutical Sciences Maharshi Dayanand UniversityRohtak 124001 Haryana India Swift School of Pharmacy Village Ghaggar Sarai Tehsil RajpuraPunjab 140401 India University Institute of Pharmaceutical Sciences Panjab UniversityChandigarh 160014 India Guru Gobind Singh College of Pharmacy Yamunanagar 135003 Haryana India

由于自然产品有化学多样性的特点,使之具有很高的实用性,无论是作为纯天然化合物或是标准化植物提取物,它们都为新药的开发提供了很多可能。与现代西药比较,草药通常被用于治疗慢性疾病。规范化操作可保证植物的一个或多个活性成分及化... 详细信息

由于自然产品有化学多样性的特点,使之具有很高的实用性,无论是作为纯天然化合物或是标准化植物提取物,它们都为新药的开发提供了很多可能。与现代西药比较,草药通常被用于治疗慢性疾病。规范化操作可保证植物的一个或多个活性成分及化合物的含量。在新药研发方面,植物药的开发成本较低且资源丰富,但植物的生长环境和基因等因素会在很大程度上影响植物提取物的生物化学成分。植物药的生产要求源植物在基因方面的单种栽培完全符合标准条件,以保证其生物化学指标的一致性,并可以优化植物药的安全性和有效性。本文旨在讨论如何改进植物药提取的规范化操作方法以及如何有效制备质量及效果稳定的植物药。

关键词：地道药材植物药植物提取物综述

Mineralogical and Geochemical Evidence of Fluid-rock Interaction at the Shallow Crustal Level in Koyna Seismogenic Region, Maharashtra, India: Impact and Implications

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Acta Geologica Sinica(English Edition) 2021年第S1期95卷 40-43页

作者： Halder PIYAL Kumar Shukla MATSYENDRA Kumar KAMLESH sharma anupam Birbal Sahni Institute of Palaeosciences(DST Govt.of India)LucknowU.P.India Govt.of India Ministry of Earth SciencesBorehole Geophysics Research LaboratoryKaradMaharashtraIndia

The Koyna region of Maharashtra located in the western part of the~65 Myr old Deccan traps province,overlying the Neoarchean cratonic granitoid basement of peninsular India,has been experiencing recurring seismicity s... 详细信息

关键词： Continental Deep Drilling Programme artificial reservoir triggered seismicity fluid-rock interaction shallow crustal level geophysical anomaly clay mineral hydrothermal alteration

Damming of River Indus during Late Quaternary in Ladakh Region of Trans-Himalaya, NW India: Implications to Lake formation-climate and tectonics

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科学通报 2013年第S1期58卷 142-155页

作者： PHARTIYAL Binita sharma anupam KOTHYARI Girish Ch Birbal Sahni Institute of Palaeobotany School of Earth and Environmental Sciences Central University of Himachal Pradesh Institute of Seismological Research

Indus river valley basin in Northwest Indian Himalaya is tectonically unstable, exhibiting a complex topography, landscape relief and varied Quaternary sedimentation. A 422 km transact along the Indus river valley from Nyoma to Batalik in Ladakh(Trans Himalayas) reveals the damming of the river four places and existence of four major palaeolakes in the Late Quaternary Period. The commencement and breeching of the palaeolake sequences and the seismites preserved therein mark of the tectonic pluses in the area but the contribution of climate cannot be ruled out. The major geomorphic landforms are alluvial fans, debris cones, unsorted pedestals, fluvio-lacustrine deposits, scree, talus cone etc. Ubiquitous mass movements and catastrophic land sliding, due to tectonic activity and abnormally high precipitation has transported the material from steep slopes to valley bottoms, was responsible of forming lakes(preserved as thick piles of fine sediment), while the outburst floods redistributed the sediment down valley. Chronologies of two lakes are available which reveal the presence of one during post LGM times around 17000 a BP which breached out prior to Older Dryas indicating of warmer and congenial rainfall and melt water supply between these two globally marked cold episode. Other lake was formed after the Younger Dryas and existed till ~1000 a BP indicative of the Holocene warming responsible for its sustenance.

关键词： Late Quaternary Holocene Trans Himalaya Indus Palaeolake deposits climate

Organic bulk heterojunction enabled with nanocapsules of hydrate vanadium pentaoxide layer for high responsivity self-powered photodetector

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Journal of Semiconductors 2022年第9期43卷 39-45页

作者： Hemraj Dahiya anupam Agrawal Ganesh D.sharma Abhishek Kumar Singh The LNM Institute of Information Technology Department of PhysicsJaipurRajasthan 302031India Bhilai Institute of Technology DurgChhattisgarh491001India Rajiv Gandhi Institute of Petroleum Technology Department of Electronics EngineeringAmethiU.P.229304India

This article demonstrates the fabrication of organic-based devices using a low-cost solution-processable technique.A blended heterojunction of chlorine substituted 2D-conjugated polymer PBDB-T-2Cl,and PC71BM supported nanocapsules hy-drate vanadium penta oxides(HVO)as hole transport layer(HTL)based photodetector fabricated on an ITO coated glass sub-strate under ambient condition.The device forms an excellent organic junction diode with a good rectification ratio of~200.The device has also shown excellent photodetection properties under photoconductive mode(at reverse bias)and zero bias for green light wavelength.A very high responsivity of~6500 mA/W and high external quantum efficiency(EQE)of 1400%have been reported in the article.The proposed organic photodetector exhibits an excellent response and recovery time of~30 and~40 ms,respectively.

关键词： self-powered detector green light sensor HVO PBDB-T-2Cl detector processable solution sensor

Drainage of pancreatic fluid collections in acute pancreatitis:A comprehensive overview

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World Journal of Clinical Cases 2022年第20期10卷 6769-6783页

作者： Akash Bansal Pankaj Gupta anupam K Singh Jimil Shah Jayanta Samanta Harshal S Mandavdhare Vishal sharma Saroj Kant Sinha Usha Dutta Manavjit Singh Sandhu Rakesh Kochhar Department of Radiodiagnosis Postgraduate Institute of Medical Education and ResearchChandigarh 160012India Department of Gastroenterology Postgraduate Institute of Medical Education and ResearchChandigarh 160012India

Moderately severe and severe acute pancreatitis is characterized by local and systemic complications.Systemic complications predominate the early phase of acute pancreatitis while local complications are important in the late phase of the disease.Necrotic fluid collections represent the most important local complication.Drainage of these collections is indicated in the setting of infection,persistent or new onset organ failure,compressive or pressure symptoms,and intraabdominal hypertension.Percutaneous,endoscopic,and minimally invasive surgical drainage represents the various methods of drainage with each having its own advantages and disadvantages.These methods are often complementary.In this minireview,we discuss the indications,timing,and techniques of drainage of pancreatic fluid collections with focus on percutaneous catheter drainage.We also discuss the novel methods and techniques to improve the outcomes of percutaneous catheter drainage.

关键词： Pancreatitis,Acute necrotizing Drainage Catheters Stents Therapeutic irrigation Debridement Collections