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When It Strikes,Are We Ready?Lessons Identified at the 7th Planetary Defense Conference in Preparing for a Near-Earth Object Impact Scenario

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International Journal of Disaster Risk Science 2022年第1期13卷 151-159页

作者： shirish ravan Tom De Groeve Lara Mani Einar Bjorgo Richard Moissl Jose Miguel Roncero Katherine Rowan David Schuld Leviticus A.Lewis Romana Kofler United Nations Office for Outer Space Affairs(UNOOSA) United Nations1220 ViennaAustria European Commission Joint Research Centre 21027 IspraItaly Centre for the Study of Existential Risk University of CambridgeCambridge CB21SBUK Division for Satellite Analysis United Nations Institute for Training and Research(UNITAR)1202 GenevaSwitzerland European Space Agency/European Space Research and Technology Centre(ESA/ESTEC) 2201 AZ NoordwijkThe Netherlands Security and Situational Awareness Unit European Commission's Directorate-General for European Civil Protection and Humanitarian Aid Operations1049 BrusselsBelgium Department of Communication George Mason UniversityFairfaxVA 22030USA Hagerty Consulting EvanstonIL 60201USA Response Operations Division Federal Emergency Management AgencyWashingtonDC 20024USA

Near-Earth object(NEO)impact is one of the examples of high impact and low probability(HILP)event,same as the Covid-19 pandemic the world faces since the beginning of *** 7 th Planetary Defense Conference held by the International Academy of Astronautics(IAA)in April 2021 included an exercise on a hypothetical NEO impact event,allowing the planetary defense community to discuss potential *** the span of the 4-day conference this exercise connected disaster response and management professionals to participate in a series of panels,providing feedback and perspective on the unfolding crisis *** hypothetical but realistic asteroid threat scenario illustrated how such a short-warning threat might *** scenario utilized during the conference indicates a need to prepare now for what might come in the future,because even with advance notice,preparation time might be *** scenario chose Europe for the impact,which may likely cope with such a disaster,through the Union Civil Protection Mechanism(UCPM)and other solidarity and support mechanisms within the European Union(EU),as well as with potential support from international *** short article raises concern about other areas in the world on how they may access NEO impact information and cope with such *** also provides an idea on vast scale of such disaster vis-a-vis the current capacity of response systems to cope with a larger event in Europe or *** scenario showed that planetary defense is a global *** engagement of the planetary defense and disaster response communities is essential in order to keep the world safe from potential disasters caused by NEO impacts.

关键词： Asteroid threats Disaster risk reduction Planetary defense Risk management and prevention

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Statistical prediction of waterflooding performance by K-means clustering and empirical modeling

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Petroleum Science 2022年第3期19卷 1139-1152页

作者： Qin-Zhuo Liao Liang Xue Gang Lei Xu Liu Shu-Yu Sun shirish Patil Department of Petroleum Engineering King Fahd University of Petroleum and MineralsDhahranSaudi Arabia Department of Petroleum Engineering China University of Petroleum-BeijingBeijing102240China Faculty of Engineering China University of GeosciencesWuhan430074HubeiChina Center for Integrative Petroleum Research King Fahd University of Petroleum and MineralsDhahranSaudi Arabia Department of Petroleum Engineering King Abdullah University of Science and TechnologyThuwalSaudi Arabia

Statistical prediction is often required in reservoir simulation to quantify production uncertainty or assess potential *** existing uncertainty quantification procedures aim to decompose the input random field to independent random variables,and may suffer from the curse of dimensionality if the correlation scale is small compared to the domain *** this work,we develop and test a new approach,K-means clustering assisted empirical modeling,for efficiently estimating waterflooding performance for multiple geological *** method performs single-phase flow simulations in a large number of realizations,and uses K-means clustering to select only a few representatives,on which the two-phase flow simulations are *** empirical models are then adopted to describe the relation between the single-phase solutions and the two-phase solutions using these ***,the two-phase solutions in all realizations can be predicted using the empirical models *** method is applied to both 2D and 3D synthetic models and is shown to perform well in the P10,P50 and P90 of production rates,as well as the probability distributions as illustrated by cumulative density *** is able to capture the ensemble statistics of the Monte Carlo simulation results with a large number of realizations,and the computational cost is significantly reduced.

关键词： Waterflooding Statistical prediction K-means clustering Empirical modeling Uncertainty quantification

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A cross-sectional study on coronary artery disease diagnosis in patients with peripheral artery disease

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Journal of Interventional Medicine 2022年第4期5卷 184-189页

作者： Jai Bharat Bhalke shirish Hiremath C.N.Makhale Om Multispeciality Hospital OmergaMaharashtraIndia Ruby Hall Clinic PuneIndia

Purpose:Compared with healthy individuals,patients with peripheral artery disease(PAD)generally have a very high risk of subclinical Coronary artery disease(CAD)and cardiovascular *** determine the correlation between CAD in PAD patients,thereby promoting the lifetime of PAD patients and reducing the serious impacts of ***:This clinical-based cross-sectional study comprised 100 consecutive patients in India from 2014 to *** this research,PAD patients were screened for CAD by treadmill stress test and cardiac colour Doppler *** addition,this study performed coronary angiography followed by peripheral angiography for patients who could not perform the treadmill ***:With the statistical results,the study observed a high prevalence of CAD in PAD patients that can be detected only with ***,30.93%of asymptomatic CAD prevalence was observed in PAD *** study strengthens the need for coronary angiography in all symptomatic lower limb PAD cases to detect early CAD,particularly in patients with diabetes and ***:There exists a strong correlation between PAD and ***,precise diagnosis followed by supervision of PAD patients is significant for avoiding local progression of cardiovascular risk.

关键词： Peripheral artery disease Coronary artery disease Angiography Cardiovascular risk ABI index

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Low-salinity-based enhanced oil recovery literature review and associated screening criteria

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Petroleum Science 2019年第6期16卷 1344-1360页

作者： Mukul Chavan Abhijit Dandekar shirish Patil Santanu Khataniar Department of Petroleum Engineering University of Alaska FairbanksFairbanksAKUSA

A thorough literature review is conducted that pertains to low-salinity-based enhanced oil recovery(EOR).This is meant to be a comprehensive review of all the refereed published papers,conference papers,master’s theses and other reports in this *** review is specifically focused on establishing various relations/characteristics or"screening criteria"such as:(1)classification/grouping of clays that have shown or are amenable to low-salinity benefits;(2)clay types *** of residual oil saturations;(3)API gravity and down hole oil viscosity range that is amenable for low salinity;(4)salinity range for EOR benefits;(5)pore sizes,porosity,absolute permeability and wettability range for low-salinity EOR;(6)continuous low-salinity injection ***-wise injection;(7)grouping of possible low-salinity mechanisms;(8)contradictions or similarities between laboratory experiments and field evidence;and(9)compositional variations in tested low-salinity waters.A proposed screening criterion for low-salinity waterflooding is *** can be concluded that either one or more of these mechanisms,or a combination thereof,may be the case-specific mechanism,i.e.,depending on the particular oil–brine–rock(OBR)system rather than something that is"universal"or universally ***,every OBR system that is unique or specific ought to be individually investigated to determine the benefits(if any)of low-salinity water injection;however,the proposed screening criteria may help in narrowing down some of the dominant responsible *** this review primarily focuses on sandstones,given the prominence of carbonates containing^60%of the world’s oil reserves,a summary of possible mechanisms and screening criteria,pertaining to low-salinity waterflooding,for carbonates is also ***,the enhancement of polymer flooding by using low-salinity water as a makeup water to further decrease the residual oil saturation is also discussed.

关键词： Low salinity Waterflooding EOR Clays Screening criteria Mechanism

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Release rate kinetics of corrosion inhibitor loaded halloysite nanotube-based anticorrosion coatings on magnesium alloy AZ91D

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Journal of Magnesium and Alloys 2021年第1期9卷 202-215页

作者： Swapnil H.Adsul Uday D.Bagale shirish H.Sonawane R.Subasri Centre for Sol-Gel Coatings International Advanced Research Centre for Powder Metallurgy and New Materials(ARCI)BalapurHyderabad 500005Telangana StateIndia Department of Food and Biotechnology South Ural State UniversityChelyabinsk 454080Russia Department of Chemical Engineering National Institute of TechnologyWarangal 506004Telangana StateIndia

Halloysite nanotubes were used as nanocontainers to hold corrosion inhibitors such as Ce^(3+)-Zr^(4+),2-mercaptobenzothiazole and 8-hydroxyquinoline in their *** acid assisted etching of the nanotubes was carried out with a view to increase the lumen diameter and thereby,increase the amount of loading of the corrosion *** morphology of as-received and etched halloysite nanotubes was ob-served using TEM *** loading of corrosion inhibitors was confirmed using SEM-EDS and BET *** microcapsules were used as capping agents for the ends of the loaded HNTs following which,they were dispersed into a hybrid sol-gel silica *** coating method was used to generate coatings on AZ91D substrates followed by heat treatment at 130℃ for 1 *** release rate kinetics of corrosion inhibitors from as-received and etched nanotubes was investigated in buffer solutions of 3.5 wt%NaCl at different *** release mechanism of corrosion inhibitors from the HNT lumen was validated using various semi-empirical *** were also evaluated for their corrosion protection ability using electrochemical techniques after exposure to 3.5 wt%NaCl solution for 120 *** generated using Ce^(3+)-Zr^(4+)loaded into as-received halloysite nanotubes have shown more effective corrosion protection when compared to other corrosion inhibitors after 120 h exposure to the corrosive medium.

关键词： Sol-gel coating Halloysite nanotubes Corrosion inhibitors Release rate Magnesium alloy AZ91D

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Bell’s palsy workup:Does audiometry add value?

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Journal of Otology 2021年第2期16卷 61-64页

作者： Jing Yuan shirish Johari Aruni Seneviratna Yaw Khian Chong Department of Otorhinolaryngology Tan Tock Seng HospitalSingapore Clinical Research&Innovation Office Tan Tock Seng HospitalSingapore

Objective:To investigate if routine audiometry in Bell’s palsy patients has prognostic ***:Retrospective case review was conducted on all Bell’s palsy patients(n紏191)seen at the tertiary otolaryngology specialist outpatient clinic from 2015 to *** of ipsilesional audiometric thresholds with patients’time-to-recovery and initial clinical severity(measured by House-Brackmann(HB)scoring)were used for the prognostic outcome *** results were analyzed using three contiguous frequency pure-tone average(1kHz,2kHz,4kHz).Statistical analysis was done via Stata(v13.1),significance tests were 2-sided at 5%significance ***:There was no significant difference between audiometric thresholds between the ipsilesional ear and the contralateral ear(p=0.87).Time-to-recovery was significantly longer for patients with severe initial presentation as compared to mild and moderate severity(p<0.01).There was no correlation found between the audiometry results and HB score at presentation(p=0.39).There was no correlation found between ipsilesional audiometric thresholds and time-to-recovery(p=0.58).Conclusion:Our study suggests that routine audiometry has limited prognostic value in Bell’s palsy patients.

关键词： Audiometry Bell’s palsy Audit Facial nerve Audiology Prognostic Outcomes

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Pt-CeO2/SiO2催化剂用于室温湿空气中CO氧化反应(英文)

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Chinese Journal of Catalysis 2017年第3期38卷 475-488页

作者： shirish S.Punde Bruce J.Tatarchuk 奥本大学化学工程系美国亚拉巴马州奥本市

开发室温CO氧化催化剂的主要挑战是CO自中毒和慢的表面动力学,同时湿气的存在也可导致催化剂失活.本文开发了高活性CeO_2促进的Pt基催化剂4%Pt-12%CeO_2/Si O_2,用于室温湿气(湿度10%–90%,25°C)中CO氧化反应,在低CO浓度(2500 ppm)时,C... 详细信息

开发室温CO氧化催化剂的主要挑战是CO自中毒和慢的表面动力学,同时湿气的存在也可导致催化剂失活.本文开发了高活性CeO_2促进的Pt基催化剂4%Pt-12%CeO_2/Si O_2,用于室温湿气(湿度10%–90%,25°C)中CO氧化反应,在低CO浓度(2500 ppm)时,CO转化率高于99%.优化了催化剂制备变量,如Pt和CeO_2负载量、CeO_2沉积方法、CeO_2和Pt前驱体的干燥和焙烧条件.采用CO/H_2化学吸附、O_2-H_2滴定、X射线衍射和BET比表面积测定表征了催化剂的表面特性,并将其与催化剂活性相关联.结果表明,CeO_2沉积方法对催化剂活性影响显著,当用浸渍法沉积CeO_2时,所得催化剂的反应速率(5.77μmol/g/s)比用沉积沉淀法(1.96μmol g^(-1)s^(-1))或CeO_2嫁接法(1.31μmol g^(-1)s^(-1))制得催化剂的高3倍.O_2-H_2滴定结果表明,当用浸渍法沉积CeO_2时,CeO_2和Pt的紧密结合导致了催化剂的高活性.催化剂载体的选择也非常重要,硅胶负载的催化剂活性(5.77μmol g^(-1)s^(-1))是氧化铝负载的(1.05μmol g^(-1)s^(-1))5倍.当反应受内扩散控制时,催化剂载体的粒径和孔结构影响非常大.另外,CeO_2和Pt前驱体的干燥和焙烧条件对催化剂活性的影响至关重要.当Pt和CeO_2含量分别大于2.5和15 wt%时,所得催化剂在室温条件下活性高(TOF>0.02 s^(-1)),稳定性好(反应15 h,CO转化率≥99%).

关键词：一氧化碳氧化催化剂铂二氧化铈二氧化硅前驱体氢氧滴定化学吸附程序升温还原

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Histone modifications and alcohol-induced liver disease:Are altered nutrients the missing link?

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World Journal of Gastroenterology 2011年第20期17卷 2465-2472页

作者： Akshata Moghe Swati Joshi-Barve Smita Ghare Leila Gobejishvili Irina Kirpich Craig J McClain shirish Barve University of Louisville Alcohol Research Center Department of Pharmacology and Toxicology University of Louisville Department of Internal Medicine Division of GastroenterologyHepatology and NutritionUniversity of Louisville Robley Rex Veterans Affairs Medical Center

Alcoholism is a major health problem in the United States and worldwide,and alcohol remains the single most significant cause of liver-related diseases and *** is known to influence nutritional status at many levels including nutrient intake,absorption,utilization,and excretion,and can lead to many nutritional disturbances and *** can dramatically affect gene expression and alcohol-induced nutrient imbalance may be a major contributor to pathogenic gene expression in alcohol-induced liver disease(ALD).There is growing interest regarding epigenetic changes,including histone modifications that regulate gene expression during disease ***,modifications of core histones in the nucleosome regulate chromatin structure and DNA methylation,and control gene *** review highlights the role of nutrient disturbances brought about during alcohol metabolism and their impact on epigenetic histone modifications that may contribute to *** review is focused on four critical metabolites,namely,acetate,S-adenosylmethionine,nicotinamide adenine dinucleotide and zinc that are particularly relevant to alcohol metabolism and ALD.

关键词：组蛋白修饰酒精性营养物质肝病烟酰胺腺嘌呤二核苷酸 DNA甲基化代谢产物相关疾病

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Evaluation of formation damages during filter cake deposition and removal process:The effect of primary damage on secondary damage

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Petroleum Science 2021年第4期18卷 1153-1162页

作者： Jaber Al Jaberi Badr S.Bageri Abdulrauf R.Adebayo shirish Patil Assad Barri Rahul B.Salin Department of Petroleum Engineering King Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia Center for Integrative Petroleum Research King Fahd University of Petroleum&MineralsDhahran31261Saudi Arabia

The properties of oil and gas formation could be significantly damaged during drilling and completion operations as a result of mud invasion,fluid incompatibility and interaction with rock *** paper presents a systematic method for evaluating formation damage during filter cake deposition(primary damage)and removal process(secondary damage).The role of primary damage in the evolution of secondary damage was also *** interaction of the filter cake solvent(chelating agent solution)with the rock samples was implemented through core flooding *** Magnetic Resonance(NMR)was used to evaluate the properties of the rock sample,pre and post filter cake deposition and removal *** results show that secondary damaged is a strong function of the location and the intensity of the primary *** rock type and its pore structure also play important roles in both primary and secondary *** extent of secondary damage depends on the amount of barium sulphate deposited during primary *** chelating agent used to dissolve the barites in sandstones,deposited the barite in the small pores while it enlarges the bigger *** contrast,the chelating agent in the carbonate samples had multiple barite deposition points.

关键词： Formation damage Filter cake removal Filter cake deposition Chelating agents Solid invasion Filtration process

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Ultrasound Assisted Synthesis of Starch Nanocrystals and It’s Applications with Polyurethane for Packaging Film

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Journal of Renewable Materials 2020年第3期8卷 239-250页

作者： Vikas S.Hakke Uday D.Bagale Sami Boufi G.Uday Bhaskar Babu shirish H.Sonawane Department of Chemical Engineering National Institute of TechnologyWarangal(TS)506004India University of Sfax Sfax Faculty of ScienceLMSESfaxTunisia

Starch nanocrystals(SNC)were prepared from maize starch using ultrasound assisted acid *** process takes less time for the generation of SNC,which is advantageous over conventional acid *** synthesized SNC were characterized using X-ray diffraction,dynamic light scattering,zeta potential and transmission electron microscopy(TEM).Particle size and TEM data show that the particles were near to 150 nm,with oval *** SNC with higher surface charge are obtained with this innovative approach as compared to conventional acid *** of high surface charge and oval like morphology,the SNC performed well in reinforcing a polyurethane *** rise in crystallinity by 16%was observed due to ultrasound *** the lower concentration of SNC in nanocomposite film,dynamic mechanical analysis demonstrated meaningful increment in mechanical properties of polyurethane nanocomposite *** decrease in chain slippage over the glass transition temperature was observed because of the SNC reinforcement in polyurethane *** to the conventional acid hydrolysis,the present approach for the synthesis of starch nanocrystals is much faster and easier.

关键词： Starch nanocrystal ultrasound acid-hydrolysis nanocomposite TEM

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