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Bioerosion on Late Pleistocene Marine Mollusks:A Paleoclimatological and Paleoecological Comparison of MIS 7 and MIS 5e with Modern Beaches(Río Negro,Argentina)

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Acta Geologica Sinica(english edition) 2022年第4期96卷 1181-1198页

作者： Melisa P.charO Gisela D.charÓ Guillermo ACeÑOLAZA Jose L.CAVALLOTTO Instituto Superior de Correlación Geológica(INSUGeO/CONICeT-UNT)Miguel Lillo 205 4000 TucumánArgentina Laboratorio de Fluidodinámica Departamento de Ingeniería MecánicaFacultad de IngenieríaUniversidad de Buenos AiresPaseo Colón 850C1063ACVCiudad Autónoma de Buenos AiresArgentina Servicio de Hidrografía Naval Av.Montes de Oca 2124C1270ABW Buenos AiresArgentina

The Late Pleistocene littoral ridges of southern South America,especially those of the north of Argentinean Patagonia,contain remains of mollusk shells with bioerosion *** sites from marine isotope stages(2 from MIS 7,4 from MIS 5 e)and five sites from modern beaches from northern Río Negro Province,with 40 taxa(17 bivalves and 23 gastropods)were analyzed,in the area between west of Baliza San Matías and Las Grutas(41°S).Three ichnogenera were identified in deposits of MIS 7:entobia,Gastrochaenolites(Domichnia)and Oichnus(Praedichnia)with one ichnospecies(***).Six ichnogenera were identified in deposits of MIS 5 e:entobia,Meandropolydora,Pinaceocladichnus,Iramena,Caulostrepsis and Oichnus with one ichnospecies(***).Seven ichnogenera were identified from modern beaches:entobia,Meandropolydora,Iramena,Caulostrepsis,Pinaceocladichnus,Gastrochaenolites(Domichnia)and Oichnus(Praedicnia),with two ichnospecies(*** and ***).On this basis,it is inferred that Pleistocene benthic communities were constituted from cheilostome bryzoans and polychaete annelids,together with drilling bivalves,predatory gastropods and overall warm-water species of *** these,Chama iudicai was found on Plicatula gibbosa from MIS 7 and MIS 5 *** record of warm temperature species suggests a higher sea surface temperature(SST)than the present one and/or the influence of the warm southward Brazilian Current affecting the waters of Golfo San Matí*** the modern beaches surveyed,there is an increase in polychaete annelids,cheilostome bryzoans,temperate-cold species and drilling bivalves,as well as sandy substrate species,which together with an increase of Gastrochaenolites and Caulostrepsis,suggest a colder climate due to the greater influence of the Malvinas Current during the Holocene.

关键词： invertebrate paleontology ichnology Bivalvia Gastropoda Polyplacophora bioerosion paleoclimatology paleoecology Quaternary/Holocene Argentina

Human papillomavirus in squamous cell carcinoma of esophagus in a high-risk population

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World Journal of Gastroenterology 2005年第8期11卷 1200-1203页

作者： Mohammad Farhadi Zahra Tahmasebi Shahin Merat farin Kamangar Dariush Nasrollahzadeh Reza Malekzadeh Digestive Disease Research Center Department of Molecular Biology Cancer Prevention Studies Branch

AIM: To investigate the relation of human papillomavirus (HPV) and esophageal squamous cell carcinoma (eSCC) in Iranian patients as compared to normal controls. MeTHODS: Using MY09/MY11 consensus primers, we compared the prevalence of a HPV L1 gene in tumor tissues from 38 eSCC cases and biopsied tissues from 38 endoscopically normal Iranian individuals. We also compared the presence of HPV16 and HPVA18 in the same samples using type-specific e6/e7 primers. ReSULTS: Fourteen (36.8%) of the 38 eSCC samples but only 5 (13.2%) of the 38 control samples were positive for the HPV L1 gene (P= 0.02). Five (13.2%) of the eSCC samples but none of the control samples were positive for the HPV16 e6/e7 gene (P= 0.05). Three (7.9%) of the eSCC samples and 5 (13.2%) of the control samples were positive for the HPV18 e6/e7 gene (P= 0.71). CONCLUSION: Our data are consistent with HPV DNA studies conducted in other high-risk areas for eSCC. HPV should be considered as a potential factor contributing to the high incidence of eSCC in Iran and other high-incidence areas of the world.

关键词： Papillomavirus Squamous cell carcinoma of esophagus Population

Riemann Hypothesis, Catholic Information and Potential of events with New Techniques for Financial and Other Applications

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Advances in Pure Mathematics 2021年第5期11卷 524-572页

作者： Prodromos char. Papadopoulos Aristotle University National Hellenic Research Foundation Giannitsa (or Yiannitsa) Greece

In this research we are going to define two new concepts: a) “The Potential of events” (eP) and b) “The Catholic Information” (CI). The term CI derives from the ancient Greek language and declares all the Catholic (general) Logical Propositions (edit_***" width="33" height="21" alt="" />) which will true for every element of a set A. We will study the Riemann Hypothesis in two stages: a) By using the eP we will prove that the distribution of events e (even) and o (odd) of Square Free Numbers (SFN) on the axis Ax(N) of naturals is Heads-Tails (H-T) type. b) By using the CI we will explain the way that the distribution of prime numbers can be correlated with the non-trivial zeros of the function em>ζem>(em>sem>) of Riemann. The Introduction and the Chapter 2 are necessary for understanding the solution. In the Chapter 3 we will present a simple method of forecasting in many very useful applications (e.g. financial, technological, medical, social, etc) developing a generalization of this new, proven here, theory which we finally apply to the solution of RH. The following Introduction as well the Results with the Discussion at the end shed light about the possibility of the proof of all the above. The article consists of 9 chapters that are numbered by 1, 2, …, 9.

关键词： Twin Problem Twin’s Problem Unsolved Mathematical Problems Prime Number Problems Millennium Problems Riemann Hypothesis Riemann’s Hypothesis Number Theory Information Theory Probabilities Statistics Management Financial Applications Arithmetical Analysis Optimization Theory Stock exchange Mathematics Approximation Methods Manifolds economical Mathematics Random Variables Space of events Strategy Games Probability Density Stock Market Technical Analysis Forecasting

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扰动系统的稳定性检测

应用数学 1996年第2期9卷 199-202页

作者： char.,CK 钟乐凡北京大学数学系

该文给出了一种对于扰动系统的Ｅ一稳定检测方法，对于离散时间系统，这种稳定性检测还可以通过有限步的代数运算完成．

关键词：扰动系统稳定性检测离散时间系统 Shur型检测

Synthesis and surface modification of nanophosphorous-based flame retardant agent by continuous flow hydrothermal synthesis

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Particuology 2015年第5期13卷 82-88页

作者： Sherif elbasuney Hosam e.Mostafa School of Chemical engineering Military Technical College

Nanoparticles can provide flame retardance to hosting polymers and act as nano fire extinguishers. Hydroxyapatite （Ca5（OH）（PO4）3）（HA） is not hygroscopic, and is thermally stable up to 800℃, with 18.5 wt% phosphorous content. It is this high phosphorous content that can provide HA with flame retardant properties. In this paper, we report on the continuous synthesis of ultrafine HA using a hydrothermal synthesis technique. The HA surface properties were changed from hydrophilic to hydrophobic by post-synthesis surface modification. The ratio of the HA nanoparticles and an intumescent agent known as exolit AP750 was investigated to yield a self-extinguishing multi-component epoxy nanocomposite for extended application under extreme fire conditions. The HA/AP750/epoxy nanocomposite was able to resist a flame at 1700 oc and self-extinguish after the flame had been removed. The nanocomposite showed an enhanced flammability performance in standard cone calorimetry testing and formed a compact and cohesive protective char layer with a 50% decrease in peak heat released compared with virgin epoxy. Our aim was to establish the use of HA as an effective nanofiller with phosphorous-based flame retardant properties. The surface of this nano fire extinguisher was modified effectively with different surfactants for enhanced compatibility with different polymeric matrices.

关键词： Flame retardancy Phosphorous-based agent Nanocomposites Hydrothermal synthesis Hydroxyapatite

CONGeNITAL SOLITARY KIDNeY

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Chinese Medical Journal 1936年第6期50卷

作者： H.e.SHIH G.Y.char Division of Urology Department of SurgeryPeiping Union Medical College.

*** solitary kidney is a rare but important urologiccondition which merits careful *** there is no sugges-tion of its presence until an associated anomaly or urinary symptomsarising from disease of the single kidney prompt a careful and thoroughurological *** etiology,diagnosis,prognosis and treatment of this condi-tion are *** cases of congenital solitary kidney are *** operations on a solitary kidney,when undertaken,should be most conservative.

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An overview of biomass solid fuels:Biomass sources,processing methods,and morphological and microstructural properties

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Journal of Bioresources and Bioproducts 2023年第4期8卷 333-360页

作者： Segun e.Ibitoye Rasheedat M.Mahamood Tien-Chien Jen Chanchal Loha esther T.Akinlabi Department of Mechanical engineering Science Faculty of Engineering and the Built EnvironmentUniversity of JohannesburgAuckland Park2006524South Africa Department of Mechanical engineering Faculty of Engineering and TechnologyUniversity of IlorinIlorin P.M.B.1515Nigeria energy Research and Technology Group CSIR-Central Mechanical Engineering Research InstituteWest BengalDurgapur-713209India Department of Mechanical and Construction engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle NE18STUnited Kingdom

Biomass solid fuel(BSF)has emerged as a promising renewable energy source,but its morphological and microstructural properties are crucial in determining their physical,mechanical,and chemical *** paper provides an overview of recent research on *** focus is on biomass sources,BSF processing methods,and morphological and microstructural properties,with a special emphasis on energy-related *** inclusion and exclusion criteria were established for the study to ensure *** inclusion criteria encompassed studies about BSFs and studies investigating the influence of biomass sources and processing methods on the morphological and microstructural properties of solid fuels within the past five *** technologies for converting biomass into usable energy were discussed,including gasification,torrefaction,carbonization,hydrothermal carbonization(HTC),and *** has advantages and disadvantages in energy performance,techno-economics,and climate *** is efficient but requires high *** produces bio-oil,char,and gases based on feedstock *** generates low-cost biochar for solid fuels and carbon sequestration *** increases energy density for co-firing with *** processes wet biomass efficiently with lower energy *** treatment affects BSF durability and strength,often leading to less durability due to voids and gaps between *** carbonization alters surface morphology,creating cavities,pores,and distinctive *** pyrolysis generates biochar with better morphological properties,while fast pyrolysis yields biochar with lower porosity and surface *** constitutes 67%of the biomass sources utilized for bioenergy generation,followed by wood residues(5%),agro-residues(4%),municipal solid wastes(3%),energy crops(3%),livestock wastes(3%),and forest residues(1%).each source has advantages and drawbacks,such as avail

关键词： Biomass feedstock Microstructural property Morphological property Renewable energy Thermal treatment

Influence of temperature and Ca(OH)2 on releasing tar and coal gas during lignite coal pyrolysis and char gasification

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Chinese Journal of Chemical engineering 2019年第11期27卷 2788-2798页

作者： Sunel Kumar Zhihua Wang Zhang Kang Jun Xia Ronald Whiddon Yong He Jaffri Gul-e-Rana Zain Ali Saleh Bairq Kefa Cen State Key Laboratory of Clean energy Utilization Zhejiang UniversityHangzhou 310027China Department of Mechanical Aerospace and Civil EngineeringBrunel University LondonUxbridge UB83PHUK Fuel Research Centre PCSIRKarachi 75280Pakistan College of Chemistry and Chemical engineering Hunan UniversityChangsha 410082China

The yield of tar and syngas has been investigated by catalytic pyrolysis of Pingzhuang lignite(PZL)over Ca(OH)2 catalyst in temperature range of 600℃-1000℃in a tube *** results show that the yield of volatile pyrolysis increases and char decreases with rising temperature for both raw and catalyzed Pingzhuang *** hydrogen fraction(H2)increased from 20%to 40%for the PZL sample;but,for the PZL-Ca(OH)2 sample,H2 fraction fluctuated randomly between 35%to 42%,with the maximum H2 fraction found at 1000℃.The Gaschromatography mass-spectroscopic(GC-MS)analysis revealed that the maximum tar yield at 800℃and 700℃was obtained for PZL and PZL-Ca(OH)2,*** surface morphology of PZL and PZL-Ca(OH)2 chars underwent different transformation in the presence of catalyst as illustrated by SeM/eDX,FTIR,and BeT ***,char sample was investigated for the carbon conversion and reactivity index using TGA analysis under N2 and CO atmosphere.

关键词： Catalyzed coal pyrolysis Release volatiles of tar and coal gas Surface area Pore volume

Column Analyses of Chloride Breakthrough and Lead Retention in Amended Sandy Soils

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Journal of environmental Science and engineering(A) 2012年第4期1卷 503-513页

作者： Mark e. Grismer Michael P. Hogan Dave e. Steinfeld Department of Hydrologic Sciences and Biological ＆ Agricultural engineering Davis CA 95616 USA Integrated environmental Resource Services Tahoe City CA 96145 USA USDA- Forest Service Portland OR 97204 USA

Stormwater quality design manuals lack scientifically creditable bases for many novel LID （Low-Impact Development） designs presently proposed to meet stormwater runoff management requirements. Potential stormwater pollutant adsorption and infiltration enhancement capabilities of forest-derived by-products （e.g. woodchips, bio-char） provide an opportunity to combine these readily availability materials into stormwater quality designs. On-site stormwater runoff treatment through determination of the soil-water transport and lead （Pb） retention capacity of two sandy soils from Oregon is considered. Using synthetic stormwater （-120 mg CI/L and -5 mg Pb/L） displacement tests in pairs ofABS （Acrylonitrile butadiene styrene） soil columns （75 mm dia by 0.46 m tall） with upward flow （to minimize air entrapment） saturated hydraulic conductivity, chloride dispersion and Pb retention by plain and amended soils is evaluated. Generally, soil amendment incorporation （woodchips, compost or biochar） as compared to an amendment layer resulted in improved hydraulic conductivities as compared to that of the soil alone. Chloride breakthrough curves verified that resident soil-water displacement occurred with 0.9 to 1.6 pore volumes and residence times for most columns were 15-30 minutes. No synthetic stormwater Pb ＂breakthrough＂ within the displaced or replaced soil-water was found, rather most Pb was adsorbed within the first 150 mm of soil.

关键词： Revegetation chloride dispersion stormwater bioretention LID.