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Effect of calcination temperature on steam reforming activity of Ni-based pyrochlore catalysts

Journal of Rare Earths 2020年第7期38卷 711-718,I0002页

作者： Daniel J.Haynes Dushyant Shekhawat david berry Amitava Roy James J.Spivey National Energy Technology Laboratory U.S.Department of Energy3610 Collins Ferry RdMorgantownWV26507 USA Louisiana State University Cain Department of Chemical Engineering3307 Patrick Taylor HallBaton RougeLA70803USA

This work served as the second part of a study evaluating the effect of calcination temperature(700-1000℃) on Ni-based lanthanum zirconate pyrochlore catalysts for methane steam reforming.A previous study(Haynes et ***.2017(43) 16744) provided a thorough characterization of the material properties for the catalysts used here,and this study focuses on the evaluation of catalytic *** activity was assessed by two different experimental studies:the effect of reaction temperature using a temperature programmed surface reaction(TPSR),and the effect of reaction *** results demonstrate a complex interaction between the Ni particles and surface LaOx species under the methane steam reforming ***,the material calcined at the lowest temperature(700℃) possesses the highest activity and selectivity,which is attributed to smaller and more welldispersed Ni particles on the surface,and,more importantly,a lesser degree La enrichment at the *** catalysts were deactivated by steam to NiO under all conditions tested,but at certain low reaction pressure(p=0.23 MPa) conditions the materials calcined at 700-900℃ are able to completely recover equilibrium activity in-situ that is then robust and stable under both low and high reaction pressures(p=1.8 MPa) suggesting the formation of a synergistic relationship between Ni and La for syngas ***,exposure of a fresh material to high reaction pressures leads to a rapid and irreversible loss in both CH4 conversion and syngas selectivity whether in the fresh(no pretreatment),or pretreated(steam,H2 or Ar only at 800℃) form for any *** mechanism for deactivation appears to be due to the presence of LaOx species that become mobile,possibly by the formation of La-OH,and covers the active Ni particles and inhibits sites responsible for the CH4 decomposition.

关键词： Nickel Pyrochlore Methane Steam reforming Catalyst Lanthanum enrichment

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Oxidative stress in humans following the Pringle manoeuvre

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Hepatobiliary & Pancreatic Diseases International 2006年第2期5卷 210-214页

作者： Giuseppe Garcea Andreas Gescher William Steward Ashley Dennison david berry University Department of Oncology 5th Floor The Robert Kilpatrick Clinical Sciences Building The Leicester Royal Infirmary Leicester LE2 7LX UK

BACKGROUND: Oxidative stress is induced in the liver by application of the Pringle manoeuvre. Malondialdehyde is a carbonyl compound formed during lipid peroxidation and prostaglandin biosynthesis, which combines with DNA to form a number of adducts. Among them is the DNA ad-duct; 3-(2-deoxybeta-dierythropentafuranosyl) pyr [1,2-alpha]-purin-10(3H) one or M1G. This study was undertaken to determine the suitability of M1G as a novel marker of ischemia-reperfusion injury in the liver and its correlation with both the length of Pringle clamp application and the overall length of the operation. METHODS: Normal and colorectal liver metastatic tissues were obtained in 12 patients before and after application of the Pringle manoeuvre. All samples were snap-frozen in liquid nitrogen at -80 ℃. DNA was extracted and M1G quantification was performed by immunoslotblot analysis. RESULTS: M1G levels in normal liver tissue were 4.0 + 1.0 per 107 nucleotides before the Pringle manoeuvre and 7.4 ± 1.0 per 10 nucleotides after the Pringle manoeuvre (mean ± standard deviation) (P<0.05 by ANOVA). M1G levels in malignant liver tissue were 2.5 ±1.4 per 107 nucleotides before the Pringle manoeuvre and 6. 5 ±1.9 adducts per 10 nucleotides after the Pringle manoeuvre (P <0. 05). Ad-duct levels in normal liver tissue showed a significant correlation with cumulative period of Pringle application. CONCLUSIONS: This is the first time that the tissue levels of M1G before and after application of the Pringle manoeuvre have been studied. The results show that the Pringle manoeuvre exerts significant oxidative stress in human hepa-tocytes, which is Pringle-time dependent. The results highlight the potential for oxidative DNA adducts levels as a tool for measuring the severity of ischemia-reperfusion injury.

关键词： Pringle liver oxidative stress M1G

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Association between baseline levels of muscular strength and risk of stroke in later life:The Cooper Center Longitudinal Study

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Journal of Sport and Health Science 2024年第5期13卷 642-649页

作者： Stephen W.Farrell david Leonard Qing Li Carolyn E.Barlow Kerem Shuval Jarett D.berry Andjelka Pavlovic Laura F.DeFina Research Division The Cooper InstituteDallasTX 75230USA Department of Internal Medicine University of Texas at Tyler School of MedicineTylerTX 75799USA

Background:Muscular strength is an important component of physical *** evaluated the relationship between baseline muscular strength and risk of stroke among adults who were aged≥65 years during ***:We included 7627 healthy adults(mean age=43.9 years,86.0%male)underwent a baseline physical examination between 1980 and *** strength was determined by 1-repetition maximum measures for bench press and leg press and categorized into age-and sex-specific tertiles for each *** fitness(CRF)was assessed via a maximal treadmill exercise *** enrolled in fee-for-service Medicare from 1999 to 2019 were included in the *** between baseline strength and stroke outcomes were estimated using a modified Cox proportional hazards *** a secondary analysis,we examined stroke risk by categories of CRF where Quintile 1=low,Quintiles 2-3=moderate,and Quintiles 4-5=high CRF based on age and ***:After 70,072 person-years of Medicare follow-up,there were 1211 earliest indications of incident *** multivariable analyses,the hazard ratio(95%confidence interval(95%CI))for stroke across bench press categories were 1.0(referent),0.96(0.83-1.11),and 0.89(0.77-1.04),respectively(p trend=0.14).The trend across categories of leg press was also non-significant(p trend=0.79).Adjusted hazard ratio(95%CI)for stroke across ordered CRF categories were 1.0(referent),0.90(0.71-1.13),and 0.72(0.57-0.92)(p trend<0.01).Conclusion:While meeting public health guidelines for muscular strengthening activities is likely to improve muscular strength as well as many health outcomes in older adults,performing such activities may not be helpful in preventing ***,meeting guidelines for aerobic activity is likely to improve CRF and lower stroke risk.

关键词： Cardiorespiratory fitness Medicare Muscular strength Stroke

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Perceived barriers and facilitators of day-case surgery for major foot and ankle procedures?A cross-sectional survey of United Kingdom surgeons

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World Journal of Orthopedics 2023年第4期14卷 248-259页

作者： Amber berry Linzy Houchen-Wolloff Natalie Crane david Townshend Robert Clayton Jitendra Mangwani Department of Physiotherapy Spire HospitalLeicester LE22FFUnited Kingdom Department of Physiotherapy University Hospitals of Leicester NHS TrustLeicester LE39QPUnited Kingdom Department of Orthopaedics Northumbria Healthcare NHS Foundation TrustNorth Sheilds NE298NHUnited Kingdom Department of Orthopaedics Victoria HospitalKirkcaldy KY25AHUnited Kingdom Academic Team of Musculoskeletal Surgery University Hospitals of Leicester NHS TrustLeicester LE54PWUnited Kingdom

BACKGROUND Advances in minimally invasive surgery and improved post-operative pain management make it possible to consider performing even major foot/ankle operations as *** could have significant benefits for patients and the health *** there are theoretical concerns about post-operative complications and patient satisfaction due to *** To scope the current practice of foot and ankle surgeons on day-case surgery for major foot and ankle procedures in the United Kingdom(UK).METHODS An online survey(19 questions)was sent to UK foot and ankle surgeons via the British Orthopaedic Foot&Ankle Society membership list in August *** foot and ankle procedures were defined as surgery that is usually performed as an inpatient in majority of centres and day-case as same day discharge,with day surgery as the intended treatment *** 132 people responded to the survey invitation with 80%working in Acute NHS *** 45%of respondents perform less than 100 day-case surgeries per year for these procedures.78%felt that there was scope to perform more procedures as day-case at their ***-operative pain(34%)and patient satisfaction(10%)was not highly measured within their *** of adequate physiotherapy input pre/post-operatively(23%)and lack of out of hours support(21%)were the top perceived barriers to performing more major foot and ankle procedures as *** There is consensus among UK surgeons to do more major foot/ankle procedures as *** of hours support and physiotherapy input pre/post-op were perceived as the main *** theoretical concerns about post-operative pain and satisfaction this was only measured by a third of those *** is a need for nationally agreed protocols to optimise the delivery of and measurement of outcomes in this type of *** a local level,the provision of physiotherapy and out of hours support should be explored at sites where this is a percei

关键词： Day-case Foot Ankle Physiotherapy Survey

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Significance of the balance between intracellular glutathione and polyethylene glycol for successful release of small interfering RNA from gold nanoparticles

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Nano Research 2015年第10期8卷 3281-3292页

作者： Mark McCully Yulan Hernandez Joao Conde Pedro V. Baptista Jesus M. de la Fuente Andrew Hursthouse david Stirling Catherine C. berry CentreforCellEngineering UniversityofGlasgowGlasgowG128QQScotlandUK InstituteofNanoscienceofAragon UniversityofZaragozaZaragoza50018Spain MassachusettsInstituteofTechnology InstituteforMedicalEngineeringandScienceHarvard-MITDivisionforHealthSciencesandTechnologyCambridgeMassachusetts02139USA UCIBIO DepartamentodeCienciasdaVidaFaculdadedeCienciaseTecnologiaUniversidadeNovadeLisboaCampusdeCaparicaCaparica2829-516Portugal InstitutodeCienciadeMaterialesdeAragon(ICMA) CSIC-UniversidaddeZaragozac/PedroCerbuna12Zaragoza50009Spain InstituteofNanoBiomedicineandEngineering KeyLaboratoryforThinFilmandMicrofabricationTechnologyoftheMinistryofEducationResearchInstituteofTranslationMedicineShanghaiJiaoTongUniversityDongchuanRoad800Shanghai200240China SchoolofScience UniversityoftheWestofScotlandPaisleyPA12BEScotlandUK

The therapeutic promise of small interfering RNAs （siRNAs） for specific gene silencing is dependent on the successful delivery of functional siRNAs to the cytoplasm. Their conjugation to an established delivery platform, such as gold nanoparticles, offers tremendous potential for treating diseases and advancing our understanding of cellular processes. Their success or failure is dependent on both the uptake of the nanoparticles into the cells and subsequent intracellular release of the functional siRNA. In this study, utilizing gold nanoparticle siRNA-mediated delivery against C-MYC, we aimed to determine if we could achieve knockdown in a cancer cell line with low levels of intracellular glutathione, and determine the influence, if any, of polyethylene glycol （PEG） ligand density on knockdown, with a view to determining the optimal nanoparticle design to achieve C-MYC knockdown. We demonstrate that, regardless of the PEG density, knockdown in cells with relatively low glutathione levels can be achieved, as well as the possible effect of steric hindrance of PEG on the availability of the siRNA for cleavage in the intracellular environment. Gold nanoparticle uptake was demonstrated via transmission electron microscopy and mass spectroscopy, while knockdown was determined at the protein and physiological levels （cells in S-phase） by in-cell westerns and BrdU incorporation, respectively.

关键词： gold nanoparticles PEG glutathione siRNA drug delivery

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中国妇女妊娠前后单纯服用叶酸对神经管畸形的预防效果

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中华医学杂志 2000年第7期80卷 493-498页

作者：李竹 RobertJ berry 李松 J david Erickson 王红 Cynthia A Moore 赵平 Joseph Mulinare 洪世欣 Lee-Yang C Wong 呼和牧人 Jacqueline Gindler 郝玲 Adolfo Correa 朱慧萍 Elaine Gunter 北京医科大学中国妇婴保健中心保健流行病学研究室100083 National Centers for Environmental Health Centers for Disease Control and Prevention

目的　评价妇女在妊娠前后服用单纯 40 0 μg叶酸增补剂对胎 /婴儿神经管畸形 (NTDs)的预防效果。方法　 1993～ 1995年在中国北方的NTDs高发地区和南方的NTDs低发地区妇女增补叶酸的推广项目中 ,共募集从孕前或孕后任何时间开始服药的... 详细信息

目的　评价妇女在妊娠前后服用单纯 40 0 μg叶酸增补剂对胎 /婴儿神经管畸形 (NTDs)的预防效果。方法　 1993～ 1995年在中国北方的NTDs高发地区和南方的NTDs低发地区妇女增补叶酸的推广项目中 ,共募集从孕前或孕后任何时间开始服药的妇女 130 142名 ,未服药的妇女 1176 89名 ;设计的服药方法从婚检时开始到孕满 3个月为止 ,每天服用单纯叶酸片 40 0 μg ;最后对妇女的分娩结局进行监测并进行预防效果的对比评价研究。结果　服药组妇女生育的胎婴儿中共发现 10 2例NTDs ,对照组胎婴儿中共发现 173例NTDs。末次月经前募集的未服药妇女在孕 2 0周以后分娩的胎婴中NTDs发生率 ,北方为 4 8‰ (16 / 3 318) ,南方为 1 0‰ (2 8/ 2 82 6 5 ) ,而妊娠前后服药妇女组则分别为1 0‰ (13/ 13 0 12 )和 0 6‰ (34/ 5 86 38)。与末次月经前募集的未服药妇女组相比 ,北方服药妇女NTDs发生率明显降低 ,其中依从性大于 80 %的服药组妇女预防率达 85 % (95 %CI为 6 2 %～ 94% ) ,南方地区服叶酸的预防率为 41% (95 %CI为 3 %～ 6 4% )。结论　妇女在妊娠前后每天服用单纯叶酸 40 0

关键词：妊娠叶酸神经管缺损预防

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EXACT MAXIMUM LIKELIHOOD ESTIMATOR FOR DRIFT FRACTIONAL BROWNIAN MOTION AT DISCRETE OBSERVATION

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Acta Mathematica Scientia 2011年第5期31卷 1851-1859页

作者：胡耀忠 Nualart david 肖炜麟张卫国 Department of Mathematics University of Kansas 405 Snow Hall Lawrence Kansas 66045-2142 USA School of Business and Administration South China University of Technology

This paper deals with the problems of consistency and strong consistency of the maximum likelihood estimators of the mean and variance of the drift fractional Brownian motions observed at discrete time instants. Both the central limit theorem and the berry-Ess′een bounds for these estimators are obtained by using the Stein’s method via Malliavin calculus.

关键词： maximum likelihood estimator fractional Brownian motions strong consistency central limit theorem berry-Ess′een bounds Stein’s method Malliavin calculus

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Mediterranean Berries as Inhibitors of Lipid Oxidation in Porcine Burger Patties Subjected to Cooking and Chilled Storage

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Journal of Integrative Agriculture 2013年第11期12卷 1982-1992页

作者： Rui Ganho Mario Estévez Mónica Armenteros david Morcuende Food Science Department ESTMPolytechnic Institute of Leiria Animal Production and Food Science University of ExtremaduraAv.de la Universidad s/n Animal Production and Food Science University of ExtremaduraAv.de la Universidad s/nCáceres 10003Spain

The efifciency of extracts from Arbutus unedo L. （AU）, Crataegus monogyna L. （CM）, Rosa canina L. （RC）, and Rubus ulmifolius Schott. （RU） to inhibit lipid oxidation in raw, cooked and cooked and chilled （2°C/12 d） porcine burger patties, was investigated. The modiifcation of the fatty acid proifle during processing treatments （cooking and chilling）, the quantitative measurements of thiobarbituric acid reactive substances （TBA-RS）, and lipid-derived volatiles, were used as indicators of lipid oxidation. Polyunsaturated fatty acids （PUFA） gradually decreased during cooking and the subsequent storage of cooked burger patties with this decrease being signiifcantly greater （P〈0.05） in control patties than in those with added berry extracts. In accordance, the control patties showed signiifcantly higher TBA-RS numbers and counts of lipid-derived volatiles in all treatments when compared to the berry-added counterparts （P〈0.05）. Results from the present work show, for the ifrst time, that extracts from A. unedo, C. monogyna, R. canina, and R. ulmifolius are promising antioxidants which could enhance the nutritional, safety and sensory properties of porcine burger patties.

关键词： berries lipid oxidation meat pattiesm TBA-RSm polyunsaturated fatty acids lipid-derived volatiles

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An international survey of classification and treatment choices for group D retinoblastoma

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International Journal of Ophthalmology(English edition) 2017年第6期10卷 961-967页

作者： Christina Scelfo Jasmine H Francis Vikas Khetan Thomas Jenkins Brian Marr david H Abramson Carol L Shields Jacob Pe’er Francis Munier Jesse berry J.William Harbour Andrey Yarovoy Evandro Lucena Timothy G Murray Pooja Bhagia Evelyn Paysse Samuray Tuncer Guillermo L Chantada Annette C Moll Tatiana Ushakova david A Plager Islamov Ziyovuddin Carlos A Leal Miguel A Materin Xun-Da Ji Jose W Cursino Rodrigo Polania Hayyam Kiratli Charlotta All-Ericsson Rejin Kebudi Santosh G Honavar Vicktoria Vishnevskia-Dai Sidnel Epelman Anthony B Daniels Jeanie D Ling Fousseyni Traore Marco A Ramirez-Ortiz Ophthalmic Oncology Service Department of Surgery Memorial Sloan Kettering Cancer Center New York 10065 USA Department of Ophthalmology Weill-Cornell Medical Center New York 10065 USA Department of Vitreoretinal and Ocular Oncology Sankara Nathralaya Chennai 600066 India Ocular Ontology Service Wills Eye Hospital Thomas Jefferson University Pennsylvania 19107 USA Hadassah - Hebrew University Medical Center Jerusalem 91120 Israel jules-Gonin Eye Hospital Lausanne 1004 Switzerland USC Roski Eye Institute Children＇s Hospital of Los Angeles California 90033 USA Ocular Oncology Service Bascom Palmer Eye Institute University of Miami Miller School of Medicine Florida 33136 USA Ocular Oncology Department S.N. Fyodorov Eye Microsurgery Federal State Institution Moscow 127486 Russia Department of Ocular Oncology Instituto Nacional de Cancer Rio de Janeiro 1122 Brazil Murray Ocular Oncology and Retina Miami Children＇s Hospital Florida 33143 USA St. Joseph＇s Children＇s Hospital New Jersey 07504 USA Department of Ophthalmology Baylor College of Medicine Texas 77030 USA Department of Ophthalmology Ocular Oncology Istanbul Medical Faculty Istanbul University Istanbul 34452 Turkey Oncology Department Hospital JP Garrahan Buenos Aires 1245 Argentina Department of Ophthalmology VU University Medical Center Amsterdam 1081 the Netherlands Department of Head and Neck Tumors Science Research Institute of Pediatric Oncology and Hematology N.N. Blokhin Russian Cancer Research Center Moscow 115478 Russia Pediatric Ophthalmology and Adult Strabismus Riley Hospital for Children Indiana University Medical Center Indiana 46202 USA National Oncology Center of Uzbekistan Tashkent 110508 Uzbekistan nstituto Nacional de Pediatria Coyoacan 04530 Mexico Department of Ophthalmology and Visual Science Smilow Cancer Hospital at Yale New Haven CT 06520 USA Xin Hua Hospital Shanghai Jiao Tong University School of Medicine Shanghai 200092 China Department of Ophthalmology Santa Casa Mi

AIM： To determine which IIRC scheme was used by retinoblastoma centers worldwide and the percentage of D eyes treated primarily with enucleation versus globe salvaging therapies as well as to correlate trends in treatment choice to IIRC version used and geographic region. METHODS： An anonymized electronic survey was offered to 115 physicians at 39 retinoblastoma centers worldwide asking about IIRC classification schemes and treatment patterns used between 2008 and 2012. Participants were asked to record which version of the IIRC was used for classification, how many group D eyes were diagnosed, and how many eyes were treated with enucleation versus globe salvaging therapies. Averages of eyes per treatment modality were calculated and stratified by both IIRC version and geographic region. Statistical significance was determined by Chi-square, ANOVA and Kruskal-Wallis tests using Prism. RESULTS： The survey was completed by 29% of physicians invited to participate. Totally 1807 D eyes were diagnosed. Regarding IIRC system, 27% of centers used the Children＇s Hospital of Los Angeles （CHLA） version, 33% used the Children＇s Oncology Group （COG） version, 23% used the Philadelphia version, and 17% were unsure. The rate for primary enucleation varied between 0 and 100% and the mean was 29%. By IIRC version, primary enucleation rates were： Philadelphia, 8%; COG, 34%; and CHLA, 37%. By geographic region, primary enucleation rates were： Latin America, 57%; Asia, 40%; Europe, 36%; Africa, 10%, US, 8%; and Middle East, 8%. However, systemic chemoreduction was used more often than enucleation in all regions except Latin America with a mean of 57% per center （P〈0.0001）. CONCLUSION： Worldwide there is no consensus on which IIRC version is used, systemic chemoreduction was the most frequently used initial treatment during the study period followed by enucleation and primary treatment modality, especially enucleation, varied greatly with regards to IIRC version used and geographic r

关键词： retinoblastoma oncology retina enucleation chemotherapy intra-arterial chemotherapy ophthalmic arterychemosurgery cancer

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Social and Behavioral Determinants of Health in the Era of Artificial Intelligence with Electronic Health Records:A Scoping Review

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Health Data Science 2021年第1期2021卷 41-59页

作者： Anusha Bompelli Yanshan Wang Ruyuan Wan Esha Singh Yuqi Zhou Lin Xu david Oniani Bhavani Singh Agnikula Kshatriya Joyce(Joy)E.Balls-berry Rui Zhang Department of Pharmaceutical Care&Health Systems University of MinnesotaUSA Department of Health Information Management University of PittsburghUSA Department of Computer Science University of MinnesotaUSA Institute for Health Informatics and College of Pharmacy University of MinnesotaUSA Carlson School of Business University of MinnesotaUSA Department of Computer Science and Mathematics Luther CollegeUSA Center for Digital Health Mayo ClinicUSA Department of Neurology Washington University in St.LouisUSA Institute for Health Informatics Department of Pharmaceutical Care&Health SystemsUniversity of MinnesotaUSA

*** is growing evidence that social and behavioral determinants of health(SBDH)play a substantial effect in a wide range of health *** health records(EHRs)have been widely employed to conduct observational studies in the age of artificial intelligence(AI).However,there has been limited review into how to make the most of SBDH information from EHRs using AI ***.A systematic search was conducted in six databases to find relevant peer-reviewed publications that had recently been *** was determined by screening and evaluating the *** on selected relevant studies,a methodological analysis of AI algorithms leveraging SBDH information in EHR data was *** synthesis was driven by an analysis of SBDH categories,the relationship between SBDH and healthcare-related statuses,natural language processing(NLP)approaches for extracting SBDH from clinical notes,and predictive models using SBDH for health *** associations between SBDH and health outcomes are complicated and diverse;several pathways may be *** NLP technology to support the extraction of SBDH and other clinical ideas simplifies the identification and extraction of essential concepts from clinical data,efficiently unlocks unstructured data,and aids in the resolution of unstructured data-related *** known associations between SBDH and diseases,SBDH factors are rarely investigated as interventions to improve patient *** knowledge about SBDH and how SBDH data can be collected from EHRs using NLP approaches and predictive models improves the chances of influencing health policy change for patient wellness,ultimately promoting health and health equity.

关键词： spite policy publications

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