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ChatGPT in transforming communication in seismic engineering: Case studies, implications, key challenges and future directions

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Earthquake science 2024年第4期37卷 352-367页

作者： partha Pratim Ray Department of Computer Applications Sikkim UniversityGangtokIndia

seismic engineering,a critical field with significant societal implications,often presents communication challenges due to the complexity of its *** paper explores the role of Artificial Intelligence(AI),specifically OpenAI’s ChatGPT,in bridging these communication *** study delves into how AI can simplify intricate seismic engineering terminologies and concepts,fostering enhanced understanding among students,professionals,and *** also presents several intuitive case studies to demonstrate the practical application of ChatGPT in seismic ***,the study contemplates the potential implications of AI,highlighting its potential to transform decision-making processes,augment education,and increase public *** acknowledging the promising future of AI in seismic engineering,the study also considers the inherent challenges and limitations,including data privacy and potential oversimplification of *** advocates for the collaborative efforts of AI researchers and seismic experts in overcoming these obstacles and enhancing the utility of AI in the *** exploration provides an insightful perspective on the future of seismic engineering,which could be closely intertwined with the evolution of AI.

关键词： AI ChatGPT seismic engineering decision making earthquake science

Role of intestinal ultrasound in ulcerative colitis: A systematic review

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World Journal of Meta-Analysis 2024年第3期12卷 42-67页

作者： partha Pal Mohammad Abdul Mateen Kanapuram Pooja Nandhakumar Rajadurai Rajesh Gupta Manu Tandan Nageshwar Reddy Duvvuru Department of Medical Gastroenterology Asian Institute of GastroenterologyHyderabad 500082India Department of Diagnostic Radiology and Imaging Asian Institute of GastroenterologyHyderabad 500082India

BACKGROUND Intestinal ultrasound(IUs)is an emerging,non-invasive,and highly sensitive diagnostic tool in inflammatory bowel disease(IBD),including ulcerative colitis(UC).Despite its potential,its adoption in clinical practice is limited due to a lack of standardization and *** To perform a comprehensive scoping review based on a systematic literature review on IUs in UC to inform current *** Ninety-nine original articles about ultrasonography in UC were identified among 7608 citations searching PubMed and EMBAsE databases for systematic *** IUs can be useful as an initial diagnostic strategy in patients with suspected IBD/*** UC,IUs can predict endoscopic response,histologic healing,and steroid responsiveness in acute severe *** can predict response to biologics/small molecules(as early as 2 wk).IUs correlates well with ileocolonoscopy,but IUs could miss rectal,jejunal,and upper GI lesions in suspected IBD and colon polyps or extra-intestinal manifestations in known *** is useful in special situations(children,pregnancy,and postoperative Crohn's disease).Inter-observer agreement is acceptable and trained physicians have comparable diagnostic ***-of-care ultrasound impacted management in 40%-60%of ***-held IUs has excellent agreement with conventional *** IUs is a non-invasive,highly sensitive tool in the diagnosis and monitoring of UC,offering excellent patient ***-of-care ultrasound by IBD physicians can significantly impact clinical decision-making.

关键词： Ulcerative colitis Intestinal ultrasound Inflammatory bowel disease Diagnosis Monitoring

Recent progress in developing ballistic and anti-impact materials:Nanotechnology and main approaches

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Defence Technology（防务技术） 2023年第3期21卷 33-61页

作者： shuangyan Wu partha sikdar Gajanan s.Bhat Department of Textiles Merchandising and InteriorsUniversity of GeorgiaAthensGA30602USA

With increasing international and civilian conflicts,developing advanced body armor has become an emerging field in academia and ***,by means of,incorporating nanomaterials,is considered a highly effective technique to achieve this *** has been widely studied in defense applications owing to high strength-to-weight ratios and excellent energy absorption capability of ***,this review encompasses the latest application of nanotechnology involving nanomaterials and nanocomposites in ballistic and anti-impact ***,this paper outlines fiber materials utilized,and alternative approaches adopted to develop robust non-metal bullet-proof *** approaches include shear thickening fluids(sTFs)incorporation,sandwich structures,polymer matrix composites(PMCs),and textile structure ***,ballistic-related performances of various materials developed using single or hybrid techniques are collected and compared.

关键词： materials composites impact

Possibility of Classical Entanglement at LIGO

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International Journal of Astronomy and Astrophysics 2018年第3期8卷 267-274页

作者： partha ghose A. K. Rajagopal National Academy of sciences India Allahabad India Inspire Institute Inc. Alexandria USA

It is now established that entanglement in the sense of local non-factorizability of two or more degrees of freedom of a system occurs in classical polarization optics. We extend the idea to weak gravitational waves which are strikingly similar to optical waves. It is shown that a linearized classical gravity wave can in principle get entangled in the sense mentioned with the vibrational modes of an array of test masses in a plane perpendicular to its direction of propagation. A Bell-CHsH inequality based on the requirement of noncontextuality for classical realism is derived, and it is shown that the putative nonfactorizable state violates this inequality. The idea is therefore empirically falsifiable.

关键词： Entanglement Classical Optics Gravitational Waves

Influence of second phase precipitates on mechanical and in-vitro corrosion behaviour of Mg-4Zn-0.5Ca-0.8Mn alloy in optimum homogenized conditions

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Journal of Magnesium and Alloys 2023年第4期11卷 1343-1366页

作者： Darothi Bairagi partha Duley Manas Paliwal sumantra Mandal Department of Metallurgical and Materials Engineering Indian Institute of Technology Kharagpur721302India

The present study investigates the mechanical and in-vitro corrosion behavior of Mg-4Zn-0.5Ca-0.8Mn alloy in optimum homogenized *** optimization of the homogenization parameters has been carried out employing thermodynamic calculations and kinetic *** model utilizes the inter-diffusivity of the solute elements and predicts that∼6–24 h of homogenization at 633 K effectively redistributes the elements in the Mg *** on the insights obtained from the simulations,the as-cast Mg-4Zn-0.5Ca-0.8Mn alloy was subjected to homogenization heat treatment process for 6–*** microstructural study through optical microscopy and scanning electron microscopy(sEM)revealed that the interconnected network of second phase precipitates substantially dissolve within 24 h,implying adequate ***,fine Mg-Zn based precipitates with varied morphology and phase fractions also evolved during homogenization treatment,as confirmed through sEM and transmission electron *** the 12 h homogenized specimen,the highest fraction of uniformly dispersed fine precipitates resulted in the highest strength(∼225 MPa).On the other hand,a substantial disruption in coarse precipitate network and lower aspect ratio of fine Mg-Zn precipitates led to the highest ductility(∼8%)in this *** the 24 h homogenized specimen,the ductility reduced marginally owing to higher aspect ratio of fine *** immersion and electrochemical tests(viz.,potentiodynamic polarization and electrochemical impedance spectroscopy)carried out in Hank’s solution revealed that the 24 h homogenized specimen exhibits the best corrosion *** least fraction of Ca_(2)Mg_(6)Zn_(3)phase with maximum disruption in interconnectivity,in combination with a small fraction of fine equilibrium MgZn_(2)precipitates,resulted in suppression of localized corrosion in this *** promotes the formation of the most stable and compact product layer over the specimen,result

关键词： Mg alloy Thermodynamic-kinetic calculation Homogenization EIs Passive film

Testing the intraplate origin of mega-earthquakes at subduction margins

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Geoscience Frontiers 2012年第4期3卷 473-481页

作者： Prosanta K.Khan partha Pratim Chakraborty G.Tarafder s.Mohanty Department of Applied Geophysics Indian School of MinesDhanbadIndia Department of Geology University of DelhiDelhiIndia National Geophysical Research Institute HyderabudIndia Department of Applied Geology Indian School of MinesDhanbadIndia

The disastrous Mw 9.3 （seismic moment 1.0 × 10^30 dyn/cm） earthquake that struck northwest sumatra on 26 December 2004 and triggered -30 m high tsunami has rejuvenated the quest for identi- fying the forcing behind subduction related earthquakes around the world. studies reveal that the stron- gest part （elastic core） of the oceanic lithosphere lie between 20 and 60 km depth beneath the upper （- 7 km thick） crustal layer, and compressive stress of GPa order is required to fail the rock-layers within the core zone. Here we present evidences in favor of an intraplate origin of mega-earthquakes right within the strong core part （at the interface of semi-brittle and brittle zone）, and propose an alternate model exploring the flexing zone of the descending lithosphere as the nodal area for major stress accumulation. We believe that at high confining pressure and elevated temperature, unidirectional cyclic compressive stress loading in the flexing zone results in an increase of material yield strength through strain hardening, which transforms the rheology of the layer from semi-brittle to near-brittle state. The increased compres- sive stress field coupled with upward migration of the neutral surface （of zero stress fields） under non- coaxial deformation triggers shear crack. The growth of the shear crack is initially confined in the near-brittle domain, and propagates later through the more brittle crustal part of the descending oceanic lithosphere in the form of cataclastic failure,

关键词： Flexing zone Non-coaxial deformation shear crack Neutral surface Rheology Compressive stress

Geochemistry and hydrocarbon source rock potential of shales from the Palaeo-Mesoproterozoic Vindhyan supergroup, central India

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能源地球科学(英文) 2023年第3期4卷 276-295页

作者： Arvind Kumar singh partha Pratim Chakraborty Birbal sahni Institute of Palaeosciences 53 University RoadLucknow226007India Department of Geology University of DelhiNew Delhi110007India Hiroshima Institute of Plate Convergence Region Research Hiroshima UniversityHigashi-Hiroshima7398526Japan

With increase in shale gas exploration, inorganic and organic geochemical investigations of shale have become extremely important. Here, we explore the six argillaceous (shale) intervals (Arangi, Koldaha, Rampur, Bijaygarh, Rewa and sirbu shale) from son valley sector, Vindhyan Basin with an aim to understand provenance conditions, palaeoclimate, tectonic setting and hydrocarbon generation potential. Whole rock geochemistry indicates Vindhyan sediments derived from felsic source(s) except for sirbu shale that indicates additional influx of mafic rocks with differentiated felsic source. A comparative study of Vindhyan shale rare earth elements (REEs) points to Mahakoshals and Chhotanagpur gneissic complex (CGC) as probable sediment provenance for Vindhyan sediments. CIA analysis, after necessary corrections for K-metasomatism, suggests evolution in weathering and palaeoclimate indicating a transformation from moderate weathering conditions with warm and humid climate during lower Vindhyan deposition to intense weathering conditions with hot and humid climate during upper Vindhyan deposition. Trace (La/Y vs. sc/Cr) and REE analysis indicates passive margin setting for Vindhyan sediments whereas a wide range spanning passive to active continental margin setting is also inferred using (Th-sc-Zr/10) and (Th–La-sc) ternary diagrams. However, these tectonic discriminant diagrams lack in explaining rift- or sag-related origin of any intracratonic basin such as the Vindhyan Basin. The total organic carbon (TOC) content in Vindhyan shales ranges from 0.29% to 8.44%. The thermally liberated hydrocarbon (s1) values range from 0.01 to 0.18 mg HC/g rock (milligram hydrocarbon per gram of rock sample), whereas hydrocarbon from cracking of the kerogen (s2) shows values ranging from 0.04 to 0.47 mg HC/g rock. Based on modified Van Krevelen correlation (HI vs. Tmax) diagram, organic matter from Arangi and Bijaygarh shales is characterized as thermally mature, Type III kerogen of gas

关键词： shale geocheristry Provenance Organic matter Hydrocarbon potential VIndhyan basin

Did weekly economic index and volatility index impact Us food sales during the first year of the pandemic?

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Financial Innovation 2023年第1期9卷 1502-1524页

作者： Narasingha Das partha Gangopadhyay Economists for Peace and security-Australia Chapter SydneyAustralia Western sydney University SydneyAustralia

We explore the impacts of economic and financial dislocations caused by COVID-19 pandemic shocks on food sales in the United states from January 2020 to January *** use the Us weekly economic index(WEI)to measure economic dislocations and the Chicago Board Options Exchange volatility index(VIX)to capture the broader stock market *** validate the NARDL model by testing a battery of models using the autoregressive distributed lags(ARDL)methodology(ARDL,NARDL,and QARDL specifications).Our study postulates that an increase in WEI has a significant negative long-term effect on food sales,whereas a decrease in WEI has no statistically significant(long-run)***,policy responses that ignore asymmetric effects and hidden cointegration may fail to promote food security during pandemics.

关键词： COVID-19 Food sales Us weekly economic index CBOE’s volatility index ARDL model Bewley transformation NARDL model QARDL model

statistical Modeling studies of Iron Recovery from Red Mud Using Thermal Plasma

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Plasma science and Technology 2013年第5期15卷 459-464页

作者： swagat s. RATH Archana PANY K. JAYAsANKAR Ajit K. MITRA C. sATIsH KUMAR partha s. MUKHERJEE Barada K. MIsHRA Institute of Minerals and Materials Technology (CsIR) Vedanta Alumina Limited Lanjigarh

Optimization studies of plasma smelting of red mud were carried out. Reduction of the dried red mud fines was done in an extended arc plasma reactor to recover the pig iron. Lime grit and low ash metallurgical （LAM） coke were used as the flux and reductant, respectively. 2level factorial design was used to study the influence of all parameters on the responses. Response surface modeling was done with the data obtained from statistically designed experiments. Metal recovery at optimum parameters was found to be 79.52%.

关键词： plasma response surface modeling red mud design of experiments optimiza-tion