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An SPH Framework for Earthquake-Induced Liquefaction Hazard Assessment of geotechnical structures

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 251-277页

作者： Sourabh Mhaski g.V.Ramana Department of Civil Engineering Indian Institute of Technology DelhiNew Delhi110016India

Earthquake-induced soil liquefaction poses significant risks to the stability of geotechnical structures *** understanding of the liquefaction triggering,and the post-failure large deformation behaviour is essential for designing resilient *** present study develops a Smoothed Particle Hydrodynamics(SPH)framework for earthquake-induced liquefaction hazard assessment of geotechnical *** coupled flowdeformation behaviour of soils subjected to cyclic loading is described using the PM4Sand model implemented in a three-phase,single-layer SPH framework.A staggered discretisation scheme based on the stress particle SPH approach is adopted to minimise numerical inaccuracies caused by zero-energy modes and tensile ***,non-reflecting boundary conditions for seismic analysis of semi-infinite soil domains using the SPH method are *** numerical framework is employed for the analysis of cyclic direct simple shear test,seismic analysis of a level ground site,and liquefaction-induced failure of the Lower San Fernando *** agreement for liquefaction triggering and post-failure behaviour demonstrates that the SPH framework can be utilised to assess the effect of seismic loading on field-scale geotechnical *** present study also serves as the basis for future advancements of the SPH method for applications related to earthquake geotechnical engineering.

关键词： Earthquake seismic liquefaction stress particle PM4Sand smoothed particle hydrodynamics(SPH)

Bioelectronic medicine in modulation of cortical spreading depolarization and beyond

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Neural Regeneration Research 2025年第2期20卷 481-482页

作者： Khaled Alok timothy g.White Chunyan Li Department of Neurosurgery Donald and Barbara Zucker School of Medicine at Hofstra/NorthwellHempsteadNYUSA translational Brain Research Laboratory The Feinstein Institutes for Medical ResearchManhassetNYUSA

Bioelectronic interventions,specifically trigeminal nerve st imulat ion(tNS),have attracted considerable attention in conditions where cortical spreading depolarizations(CSDs)accompanied by compromised cerebral perfusion may exacerbate neurological *** pharmacological interventions have demonstrated initial potential in addressing CSDs,a standardized treatment approach has not yet been *** objective of this perspective is to explore emerging bioelectronic methodologies for addressing CSDs,particularly emphasizing tNS,and to underscore tNS’s capacity to enhance neurovascular coupling and cerebral perfusion.

关键词： cerebral perfusion electronic

Impact of Zika virus non-structural protein mutations on hippocampal damage

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Neural Regeneration Research 2025年第8期20卷 2307-2308页

作者： Larissa M.g.Cassiano Roney S.Coimbra Neurogenômica/Imunopatologia Instituto RenéRachouFiocruzBelo HorizonteBrazil Departamento de Bioquímica e Imunologia Instituto de Ciências BiológicasUniversidade Federal de Minas GeraisBelo HorizonteBrazil

the Zika virus(ZIKV),a member of the Flaviviridae family,attracted worldwide attention for its connection to severe neurological effects,notably microcephaly in newborns,first reported during the 2015 epidemic in ***,its impact goes beyond fetal and neonatal abnormalities,also affecting the central nervous system(CNS)in both children and adults,leading to enduring cognitive and behavioral impairments.

关键词： damage fetal neonatal

Cultural and creative sectors at a crossroad:from a mainstream process towards an active engagement

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Built Heritage 2021年第3期5卷 49-64页

作者： Christian ost Ruba Saleh Raymond Lemaire International Conservation Centre KU Leuven UniversityKasteelpark Arenberg 1B-3001 HeverleeBelgium ICHEC Brussels Management School Brussels4 Boulevard Brand Whitlock1150 BrusselsBelgium

the COVID-19 pandemic has led to a current global health crisis with dreadful repercussions all over the world.A global economic recession is anticipated,with strong impacts in all economic and social sectors,including the cultural *** all sub sectors will be impacted(heritage sites,theatres,museums,operas,art galleries),the cultural built heritage is particularly at stake,as it relies on multiple stakeholders through a wide range of heritage-related activities(tourism,recreation,housing,real estate,construction,craftsmanship,etc.).Sites management and heritage conservation have not only been vulnerable to strong economic and social disruptions,like most of other cultural fields,but have been greatly challenged because heritage values and the paradigm of conservation(50 years after adoption of the UNESCO convention)are being themselves revisited in the perspective of the Sustainable Development *** paper aims also to consider cultural heritage as part of the Cultural and Creative Sectors(CCS)and how creativity and innovation contribute to post-COVID recoveries through Schumpeter-related creative destruction *** current crisis might be perceived in a perspective of long wave theory of innovations and economic *** economic history is filled with many examples of such transition period when inventions,innovations,and growth reactivate the economic development in an upward long-term *** such framework,crisis can trigger innovation and creativity and can be understood as opportunity to increase the CCS resilience and sustainability,as well as harness the universality and the power of ***,the paper aims to describe implications of such situation by providing to the CCS ways to learn and experience cultural entrepreneurship,resilient strategies,new sustainable and circular business models applied to the cultural heritage sector and its conservation.

关键词： Cultural and creative sectors(CCS) Cultural heritage Cultural entrepreneurship Long wave theory Sustainable and circular business model COVID-19 Cultural resilience

A kinetic model for a single step biodiesel production from a high free fatty acid (FFA) biodiesel feedstock over a solid heteropolyacid catalyst

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green Energy & Environment 2019年第3期4卷 328-341页

作者： Aashish gaurav stéphane Dumas Chau t.Q.Mai Flora t.t.Ng Department of Chemical Engineering University of Waterloo

Production of biodiesel from yellow grease(waste cooking oil and waste animal fats) is fast emerging as a promising alternative to address the twin challenges before the biodiesel industry today-fluctuation in prices of vegetable oil and the food versus fuel debate. Yellow grease has a high percentage of free fatty acids(FFA) and proves to be an unsuitable feedstock for biodiesel production from commercially viable alkalicatalyzed production systems due to saponification problems.'green' methodologies based on heterogeneous solid acid catalyzed reactions have the potential to simultaneously promote esterification and transesterification reactions of yellow grease to produce biodiesel without soap formation and offer easy catalyst separation without generation of toxic streams. this paper presents kinetic studies for the conversion of model yellow grease feeds to biodiesel using a heteropolyacid supported on alumina(HSiW/Al2O3) using a batch autoclave. three model yellow grease feeds were prepared using canola oil with added FFA such as palmitic, oleic and linoleic acid. A pseudo homogeneous kinetic model for the parallel esterification and transesterification was developed. the rate constants and activation parameters for esterification and transesterification reactions for the model yellow grease feeds were determined. the rate constants for esterification are higher than the transesterification rate constants. the kinetic model was validated using the experimental biodiesel data obtained from processing a commercial yellow grease feed. the kinetic model could be used to design novel processes to convert various low-value waste oils, fats and non-food grade oils to sustainable biodiesel.

关键词： Yellow grease Canola oil Free fatty acids Heteropolyacid Kinetics for esterification and transesterification

Impact of Pollutant Concentration and Particle Deposition on the Radiative Flow of Casson-Micropolar Fluid between Parallel Plates

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Computer Modeling in Engineering & Sciences 2025年第1期142卷 665-690页

作者： ghaliah Alhamzi Badr Saad t.Alkahtani Ravi Shanker Dubey Vinutha Kalleshachar Neelima Nizampatnam Department of Mathematics and statistics College of ScienceImam Mohammad Ibn Saud Islamic University(IMSIU)Riyadh11564Saudi Arabia Department of Mathematics College of ScienceKing Saud UniversityRiyadh11989Saudi Arabia Department of Mathematics Amity School of Applied SciencesAmity University RajasthanJaipur302002RajasthanIndia Department of studies in Mathematics Davangere UniversityDavangere577002India Department of Electronics and Communication Engineering Amrita School of EngineeringAmrita Vishwa VidyapeethamBengaluru560035India

Assessing the behaviour and concentration of waste pollutants deposited between two parallel plates is essential for effective environmental *** the effectiveness of treatment methods in reducing pollution scales is made easier by analysing waste discharge *** waste discharge concentration analysis is useful for assessing how effectively wastewater treatment techniques reduce pollution *** study aims to explore the Casson micropolar fluid flow through two parallel plates with the influence of pollutant concentration and thermophoretic particle *** explore the mass and heat transport features,thermophoretic particle deposition and thermal radiation are *** governing equations are transformed into ordinary differential equations with the help of suitable similarity *** Runge-Kutta-Fehlberg’s fourthfifth order technique and shooting procedure are used to solve the reduced set of equations and boundary *** integration of a neural network model based on the Levenberg-Marquardt algorithm serves to improve the accuracy of predictions and optimize the analysis of *** outcomes are displayed to analyze the characteristics of the relevant dimensionless parameters in the current *** reveal that concentration upsurges as the micropolar parameter *** concentration reduces with an upsurge in the thermophoretic *** upsurge in the external pollutant source variation and the local pollutant external source parameters enhances mass *** surface drag force declines for improved values of porosity and micropolar parameters.

关键词： Micropolar fluid thermal radiation porous medium thermophoretic particle deposition waste discharge concentration

Hepatoprotective activity of brown alga Padina boergesenii against CCl_4 induced oxidative damage in Wistar rats

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Asian Pacific Journal of tropical Medicine 2010年第9期3卷 696-701页

作者： Rajamani Karthikeyan st Somasundaram t Manivasagam t Balasubramanian P Anantharaman Centre of Advanced study in Marine Biology Annamalai UniversityParangipettai-608 502Tamil NaduIndia Department of Bio-chemistry and Bio-technology Annamalai UniversityChidambaram-608 002Tamil NaduIndia

Objective:to investigate the protective effects of brown alga Padina boergesenii（***） against carbon tetrachloride（CCl4） induced oxidative damage and liver fibrosis in ***: to assess the hepatic damage liver weight,the activities of tBARS level,glutathione,SOD,CAt and gPx in circulation and ***:the group of rats induced with CCl4 alone（2 mL/kg body weight）,showed noticeable increase in the liver weight and tBARS *** by, the level of antioxidant enzymes glutathione peroxidase,Superoxide dismutase and catalase was also significantly（P<0.01） *** as,the rats pretreated with ***（150 mg/ kg body weight） modulated the CCl4 induced liver *** level of antioxidant enzymes and lipid peroxidation products was found to be significandy（P<0.01） attenuated to near normal level, when compared with rats induced with CCL,*** order to assess the role of carotenoids in the relevant activity,total carotenoid content of the extract was analysed and found to be 0.59 mg/g fresh weight（FW）.Further,the histopathogical studies provide a supportive evidence for this study to show the protective nature of ***:the protective role of brown alga *** extract has confirmed its potential activity through its antioxidant sparing actions against CCl4 induced free radical ***,the possible mechanism of hepatoprotection is rather speculative at this stage and investigations are underway to isolate and characterize the bioactive compounds from ***.

关键词： Hepatotoxicity Padina boergesenii Carbon tetrachloride Liver fibrosis Carotenoids

Percutaneous liver biopsy complicated by hemobilia-associated acute cholecystitis

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World Journal of gastroenterology 2006年第27期12卷 4435-4436页

作者： Yair Edden Hugo st Hilaire Keith Benkov Michael t Harris Department of Surgery Mount Sinai School of Medicine New YorkNYUnited States Department of Pediatrics Division of GastroenterologyMount Sinai School of Medicine New YorkNYUnited States

Liver biopsy is generally considered a safe and highly useful procedure. It is frequently performed in an outpatient setting for diagnosis and follow-up in numerous liver disorders. Since its introduction at the end of the 19th century, broad experience, new imaging techniques and special needles have significantly reduced the rate of complications associated with liver biopsy. Known complications of percutaneous biopsy of the liver include hemoperitoneum, subcapsular hematoma, hypotension, pneumothorax and sepsis. Other intra-abdominal complications are less common. Hemobilia due to arterio-biliary duct fistula has been described, which has only rarely been clinically expressed as cholecystitis or pancreatitis. We report a case of a fifteen year-old boy who developed severe acute cholecystitis twelve days after a percutaneous liver biopsy performed in an outpatient setting. the etiology was clearly demonstrated to be hemobilia-associated, and the clinical course required the performance of a laparoscopic cholecystectomy. the post operative course was uneventful and the patient was discharged home. Percutaneous liver biopsy is a safe and commonly performed procedure. However, severe complications can occasionally occur. Both medical and surgical options should be evaluated while dealing with these rare incidents.

关键词： Hemobilia Liver biopsy Cholecystitis

statistical physics in QCD evolution towards high energies

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Science China(Physics,Mechanics & Astronomy) 2015年第8期58卷 1-32页

作者： MUNIER stphane Centre de physique thorique ′Ecole PolytechniqueCNRS Palaiseau France

the concepts and methods used for the study of disordered systems have proven useful in the analysis of the evolution equations of quantum chromodynamics in the high-energy regime: Indeed, parton branching in the semi-classical approximation relevant at high energies and at a fixed impact parameter is a peculiar branching-diffusion process, and parton branching supplemented by saturation effects(such as gluon recombination) is a reaction-diffusion process. In this review article, we first introduce the basic concepts in the context of simple toy models, we study the properties of the latter, and show how the results obtained for the simple models may be taken over to quantum chromodynamics.

关键词： quantum chromodynamics color dipole model color glass condensate stochastic fronts traveling waves reaction-diffusion