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Tidal drag and westward drift of the lithosphere

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Geoscience Frontiers 2023年第6期14卷 102-116页

作者： Vincenzo nesi Oscar Bruno Davide Zaccagnino Corrado Mascia Carlo Doglioni Dipartimento di Matematica Guido Castelnuovo Piazzale Aldo Moro5Roma 00185Italy Istituto Nazionale di Geofisica e Vulcanologia Via di Vigna Murata605Roma 00143Italy Computing and Mathematical Sciences Department Caltech1200 E.California Blvd.MC 305-16Pasadena 91125CAUSA Dipartimento di Scienze della Terra Piazzale Aldo Moro5Roma 00185Italy

Tidal forces are generally neglected in the discussion about the mechanisms driving plate tectonics despite a worldwide geodynamic asymmetry also observed at subduction and rift *** tidal drag could theoretically explain the westerly shift of the lithosphere relative to the underlying ***,viscosity in the asthenosphere is apparently too high to allow mechanical decoupling produced by tidal ***,we propose a model for global scale geodynamics accompanied by numerical simulations of the tidal interaction of the Earth with the Moon and the *** provide for the first time a theoretical proof that the tidal drag can produce a westerly motion of the lithosphere,also compatible with the slowing of the Earth’s rotational *** results suggest a westerly rotation of the lithosphere with a lower bound ofω≈(0.1-0.2)°/Myr in the presence of a basal effective shear viscosityη≈10^(16)Pa-s,but it may rise toω>1°/Myr with a viscosity ofη≈≤3×10^(14)Pa-s within the Low-Velocity Zone(LVZ)atop the *** faster velocity would be more compatible with the mainstream of plate motion and the global asymmetry at plate *** on these computations,we suggest that the super-adiabatic asthenosphere,being vigorously convecting,may further reduce the viscous coupling within the LVZ Therefore,the combination of solid Earth tides,ultra-low viscosity LVZ and asthenospheric polarized small-scale convection may mechanically satisfy the large-scale decoupling of the lithosphere relative to the underlying *** plate motions are explained because of lateral viscosity heterogeneities at the base of the lithosphere,which determine variable lithosphere-asthenosphere decoupling and plate interactions,hence plate tectonics.

关键词： Tidal drag Plate motions Polarized plate tectonics Lithosphere-asthenosphere interaction

Growth of Variable Aspect Ratio ZnO Nanorods by Solochemical Processing

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Journal of Materials Science & Technology 2015年第1期31卷 10-15页

作者： Marivone Gusatti Daniel A.R.Souza Nivaldo C.Kuhnen Humberto G.riella Departamento de Engenharia Química e Engenharia de Alimentos Programa de Pós-Graduacao em Engenharia Química LABMAC Universidade Federal de Santa Catarina (UFSC) Campus UniversitárioCP 476 Florianópolis Santa Catarina 88040-900 Brazil

In this work,variable aspect ratio（length divided by diameter） zinc oxide nanorods were synthesized through a simple solochemical method by reacting a Zn2+precursor with sodium hydroxide at low reaction *** analysis of the X-ray diffraction data indicated that the samples had hexagonal wurtzite structure and nanometric size *** transmission electron microscopy（TEM） images of the products prepared at60 and 80 ℃ exhibited rod-like architecture,showing that the reaction temperature did not affect the ZnO *** average aspect ratio of the ZnO nanorods decreased from 3.4 to 2.4 when the reaction temperature was raised from 60 to 80 ℃.The samples presented a blue shift in the excitonic absorption compared to ZnO bulk that increased alongside with reaction *** addition,this research investigated the results obtained by varying the concentration of zinc chloride *** the same temperature,it could be verified that when the zinc concentration was increased,the diameter of the ZnO nanorods also slightly increased,and much shorter nanorods were achieved,especially in the reactions performed at 50 and 70 ℃.Finally,the growth mechanism of the ZnO nanostructures was proposed based on the results obtained by changing the zinc precursor concentration and reaction temperature.

关键词： Chemical synthesis ZnO nanorods Growth mechanism

The Adaptation of Chinese Split-Site Business Students to British Classrooms:A Cross-Cultural Perspective

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Frontiers of Education in China 2018年第3期13卷 401-425页

作者： WANG Liyuan Hilary nesi Foreign Languages School Jiangxi University of Finance and EconomicsNanchang 330013China School of Humanities Coventry UniversityCoventry CV15FBEngland

Chinese business education differs from British business education in many *** the whole,it focuses on the acquisition of theoretical knowledge,whereas British business education places far more emphasis on soft management skills and *** paper examines a split-site business degree program offered by a Chinese international school and a British business school,and explores the attitudes and expectations of the Chinese participants and their Chinese and British lecturers from an“English for specific purposes”*** study conducted classroom observation,semi-structured interviews,and a questionaire survey,and identifies areas of difficulty for Chinese business students in the UK,in particular regarding their beliefs about teacher and student roles,their learning priorities and learning strategies,and their“goal-oriented”approach to discussion,which is at odds with the more collaborative and exploratory Western discussion *** findings have implications for pre-sessional and in-sessional English course design,the management of split-site business degree programs,the teaching of Chinese students,and the enhancement of learning experiences generally in international business programs.

关键词： Chinese students tertiary business education cultures of learning English for specific purposes

Characterization of PetM cytochrome b6f subunit 7 domain-containing protein in tomato

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Horticulture Research 2023年第12期10卷 14-25页

作者： Mustafa Bulut Adriano Nunes-nesi Alisdair R.Fernie Saleh Alseekh Root Biology and Symbiosis Max-Planck-Institute of Molecular Plant PhysiologyAm Mühlenberg 114476 PotsdamGermany Departamento de Biologia Vegetal Universidade Federal de ViçosaViçosa 36570-900 MGBrazil Plant Metabolomics The Center for Plant Systems Biology and Biotechnology4000 PlovdivBulgaria

In recent years,multiple advances have been made in understanding the photosynthetic machinery in model *** transfer to horticultural important fruit crops is challenging and time-consuming due to restrictions in gene editing tools and prolonged life ***,we characterize a gene encoding a PetM domain-containing protein in *** CRISPR/Cas9 knockout lines of the PetM showed impairment in the chloroplastic electron transport rate(ETR),reduced CO_(2) assimilation,and reduction of carotenoids and chlorophylls(Chl)under several light ***,growth-condition-dependent elevation or repression of Chl a/b ratios and de-epoxidation states were identified,underlining possible impairment compensation ***,under low light and glasshouse conditions,there were basal levels in CO_(2) assimilation and ETR,indicating a potential role of the PetM domain in stabilizing the cytochrome b6f complex(Cb6f)under higher light irradiance and increasing its quantum *** suggests a potential evolutionary role in which this domain might stabilize the site of the Cb6f regulating ratios of cyclic and linear electron transport and its potential importance during the conquest of terrestrial ecosystems during which plants were exposed to higher ***,the results are discussed with regard to metabolism and their implication to photosynthesis from an agronomic perspective.

关键词： assimilation metabolism consuming

World Kidney Day 2011：Protect Your Kidneys, Save Your Heart

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肾脏病与透析肾移植杂志 2011年第1期20卷 3-6,28页

作者： William G Couser MD Miguel C riella MD For the Joint International Society of Nephrology (WGC) and International Federationof Kidney Foundations (MCR) World Kidney Day 2011 Steering Committee

Introduction to World Kidney Day2011 March10,2011will mark the celebration of the6th World Kidney Day(WKD),an annual event jointly sponsored by the International Society of Nephrology and the International Federation of Kidney Foundations. Since its inception in2006,WKD has grown dramatically to become the most widely celebrated event associated with kidney disease in the world and the most successful effort to raise awareness among both

关键词：肾形矿脉肾脏病临床治疗患者

Biliary tree gastrinomas in multiple endocrine neoplasia type 1 syndrome

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World Journal of gastroenterology 2013年第45期19卷 8312-8320页

作者： Francesco Tonelli Francesco Giudici ga.riella.nesi Giacomo Batignani Maria Luisa Brandi Department of Surgery and Translational Medicine University of Florence50014 Florence Italy

AIM:To describe our patients affected with ectopic biliary tree gastrinoma and review the literature on this ***:Between January 1992 and June 2012,28 patients affected by duodenopancreatic endocrine tumors in multiple endocrine neoplasia type 1(MEN1)syndrome underwent surgery at our *** retrospective review article analyzes our experience regarding seventeen of these patients subjected to duodenopancreatic surgery for Zollinger-Ellison syndrome(ZES).Surgical treatment consisted of duodenopancreatectomy(DP)or total pancreatectomy(TP).Regional lymphadenectomy was always *** hepatic tumoral lesions found were removed during *** MEN1 patients,removal of duodenal lesions can sometimes lead to persistence or recurrence of *** possible explanation for this unfavorable outcome could be unrecognized ectopic localization of gastrin-secreting *** study described three cases among the seventeen patients who were found to have an ectopic gastrinoma located in the biliary ***:Seventeen MEN1 patients affected with ZES were *** mean age was 40 *** patients underwent DP and two *** histopathological examination,duodeno pancreatic endocrine tumors were found in all 17 ***-one gastrinomas were detected in the first three portions of the *** one gastrinoma was found in the *** mean number of gastrinomas per patient was 5(range 1-16).Malignancy was established in 12 patients(70.5%)after lymph node,liver and omental metastases were *** patients exhibited biliary tree gastrinomas as well as duodenal gastrinoma(s).In two cases,the ectopic gastrinoma was removed at the same time as pancreatic surgery,while in the third case,the biliary tree gastrinoma was resected one year after DP because of recurrence of ***:These findings suggest the importance of checking for the presence of ectopic gastrinomas in the biliary tree in MEN1 patients undergoing Z

关键词： gastrinoma Multiple endocrine neoplasia type 1 Zollinger-Ellison Syndrome Ectopic gastrinoma Biliary tree Duodenopancreatectomy

A Note on Solutions for Asymptotically Linear Elliptic Systems

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Acta Mathematicae Applicatae Sinica 2008年第3期24卷 511-522页

作者： Lei-ga Zhao Department of Mathematics Beijing University of Chemical Technology 100029 Beijing China Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China Department of Mathematics Yunnan Normal University Kunming 650092 China

In this paper, we are concerned with the elliptic system of{ -△u＋V（x）u=g（x,v）, x∈R^N, -△v＋V（x）v=f（x,u）, x∈R^N, where V（x） is a continuous potential well, f, g are continuous and asymptotically linear as t→∞. The existence of a positive solution and ground state solution are established via variational methods.

关键词： Elliptic system ground state solution variational methods concentration-compactness principle

Failure behavior of soil-rock mixture slopes based on centrifuge model test

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Journal of Mountain Science 2019年第8期16卷 1928-1942页

作者： WANG Teng ZHANG ga State Key Laboratory of Hydroscience and Engineering Tsinghua University

The stability of soil-rock mixtures(SRMs) that widely distributed in slopes is of significant concern for slope safety evaluation and disaster prevention. The failure behavior of SRM slopes under surface loading conditions was investigated through a series of centrifuge model tests considering various volumetric gravel contents. The displacement field of the slope was determined with image-based displacement system to observe the deformation of the soil and the movement of the block during loading in the tests. The test results showed that the ultimate bearing capacity and the stiffness of SRM slopes increased evidently when the volumetric block content exceeded a threshold value. Moreover, there were more evident slips around the blocks in the SRM slope. The microscopic analysis of the block motion showed that the rotation of the blocks could aggravate the deformation localization to facilitate the development of the slip surface. The high correlation between the rotation of the key blocks and the slope failure indicated that the blocks became the dominant load-bearing medium that influenced the slope failure. The blocks in the sliding body formed a chain to bear the load and change the displacement distribution of the adjacent matrix sand through the block rotation.

关键词： Soil rock mixture Slope stability Slope failure Centrifuge model test

Chronic kidney disease and the aging population

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肾脏病与透析肾移植杂志 2014年第1期23卷 1-5页

作者： Marcello Tonelli Miguel riella University of Alberta.Alberta Canada Catholic University of Parana CuritibaBrazil

"Youth,which is forgiven everything,forgives itself nothing:age,which forgives itself everything,is forgiven nothing."George Bernard ShawThe proportion of older people in the general population is steadily increasing worldwide,with the most rapid growth in low-and middle-income countries[1].This demographic change is to be celebrated,because it is the consequence of socioeconomic development and better life ***,population aging also

关键词：摘要编辑部编辑工作读者