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Acta Geochimica 2024年第2期43卷 399-410页

作者： Salih M.Awadh Zinah S.Al-Ankaz Mohanad R.A.Al-Owaidi john S.Armstrong-Altrin Department of Geology College of ScienceUniversity of BaghdadBaghdadIraq Department of Geology College of ScienceUniversity of WasitWasit 52011Iraq Department of Applied Geology College of ScienceUniversity of BabylonBabylon 51001Iraq Unidad de Procesos Oceanicos y Costeros Instituto de Ciencias del Mar y LimnologíaUniversidad Nacional Autonoma de MexicoCiudad Universitaria04510 Mexico CityCDMXMexico Department of Marine Sciences Bharathidasan UniversityTiruchirapalliTamil Nadu 620024India

the sandstones of the Late miocene–Pliocene Dibdibba Formation in the Najaf–Karbala Plateau and Basra were examined to determine their source rocks and origin. the rare earth elements(REE) and trace elements(Sc, Co, v, and th) concentrations in these sandstones revealed that they likely derived from a single source. the steep light rare earth elements(LREE) and flat, heavy rare earth element(HREE) patterns, negative Eu anomaly, and high ΣREE contents in sandstones suggest its derivation from a suggests that a passive continental margin environment and originated from felsic source rocks. the average concentration of ΣREE is 93.5 ppm, which is lower than that of the average crustal compositions like Upper Continental Crust and Post Archean Australian Shale. the higher proportion of LREE compared to HREE implies that these sandstones were recycled and derived from a distal source. the th/Co, th/Sc, La/Sc, La/Co, Eu/Eu*and(La/Lu)cn elemental ratios indicated that these Late Miocene–Pliocene sandstones were derived from felsic rocks located in the marginal region of the Arabian Shield.

关键词： REE Dibdibba formation Clastic sediments Passive continental margin

氨基磺酸盐-硫酸盐混合溶液中锌-锰合金的电沉积(英文)

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电镀与涂饰 2003年第6期22卷 1-6,28页

作者： sm Silaimani S john S Sudharsana v S Muralidharan Central Electrochemical Research Institute Karaikudi 630006Tamilnadu Council Of Scientific&Industrial Research.IndiaCentral Electrochemical Research InstituteKaraikudi 630006Tamilnadu Council Of Scientific&Industrial Research.IndiaCentral Electrochemical Research InstituteKaraikudi 630006Tamilnadu Council Of Scientific&Industrial Research.IndiaCentral Electrochemical Research InstituteKaraikudi 630006Tamilnadu Council Of Scientific&Industrial Research.India

本文研究了氨基磺酸盐-硫酸盐混合溶液中锌-锰合金的电沉积机理。实验结果显示,在低电流密度区获得哑光镀层,锰离子的催化析氢作用降低了合金沉积效率.玻璃化炭黑上的伏安试验显示锌沉积过程中的第一个电子转移较慢,阳极溶出伏安试验显... 详细信息

本文研究了氨基磺酸盐-硫酸盐混合溶液中锌-锰合金的电沉积机理。实验结果显示,在低电流密度区获得哑光镀层,锰离子的催化析氢作用降低了合金沉积效率.玻璃化炭黑上的伏安试验显示锌沉积过程中的第一个电子转移较慢,阳极溶出伏安试验显示锌合金的异常共沉积导致富锌中间相的产生。

关键词：锌-锰合金电沉积异常沉积循环伏安法玻璃化炭黑

the petrogenesis of modern and ophiolitic lavas reconsidered:Ti-v and Nb-th

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Geoscience Frontiers 2022年第2期13卷 90-109页

作者： john W.Shervais Department of Geosciences Utah State UniversityLoganUT 84322-4500United States

Tectonic discrimination diagrams are a key tool for understanding ancient volcanic rock *** this contribution we compile over 15,000 whole rock compositions to re-evaluate the Ti-v discrimination diagram and compare it to another commonly used tool,the Nb/Yb-th/Yb *** have reformulated the Ti-v diagram into a log-log plot to distinguish samples more clearly at lower *** compilation shows that MORB are dominated by Ti/v=20-43,whereas juvenile arc tholeiites and boninites are characterized by Ti/vthough there is minor overlap at the boundary(Ti/v=20-22).Plume-related volcanic rocks(ocean island basalts,oceanic plateaux,and continental flood basalts)generally have Ti/v>43,although there may be significant overlap with MORB-like ratios for ridgecentered OIB and for some oceanic *** 56%of alkaline OIB have Ti/v>***-arc basins are dominantly *** models show that MORB and juvenile arc volcanics most likely formed under different fO;conditions,but are permissive of similar fO_(2)if the arc rocks form by much higher melt *** Nb/Yb ***/Yb plot clearly distinguishes most oceanic basalts(MORB,plateaux,OIB)from subduction-related volcanic rocks(boninite,juvenile arc tholeiite,calc-alkaline)and from flood *** propose here a new two-proxy diagram of Ti/v ***/Nb,which incorporates the advantages of both.

关键词： Ophiolite Discrimination diagrams Trace element geochemistry vanadium

Importance of Quaternary research to society

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Episodes 2008年第2期31卷 203-206页

作者： john J. Clague Cenlre for Natural Hazard Research Simon Fraser University Burnaby BC Canada V5A 1S6

the Quaternary Period, although only an instant in the 4.5 billion year expanse of geologic time, is disproportionately important because it is the interval during which humans evolved and because it includes the present. Events of the Quaternary are preserved in sediments, ice sheets, and landforms with a greater degree of completeness and temporal resolution than those of any earlier period of comparable length. Studies of these historical and environmental archives continue to provide the essential context that allows scientists to evaluate what is happening with Earth＇s climate today and to clarify our vulnerability to hazardous natural processes, for example earthquakes, tsunami, volcanic eruptions, floods, and landslides.

关键词：地质学科学研究第四纪地质年代

Incidental gallbladder cancer diagnosis confers survival advantage irrespective of tumour stage and characteristics

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World Journal of Gastroenterology 2022年第18期28卷 1996-2007页

作者： Moath Alarabiyat Syed Soulat Raza john Isaac Darius Mirza Ravi Marudanayagam Keith Roberts Manuel Abradelo David C Bartlett Bobby v Dasari Robert P Sutcliffe Nikolaos A Chatzizacharias HPB and Liver Transplant Unit Queen Elizabeth HospitalBirmingham B152GWUnited Kingdom Department of HPB and Liver Transplantation Queen Elizabeth HospitalUniversity Hospitals BirminghamBirmingham B152THUnited Kingdom

BACKGROUND Incidental gallbladder cancer(IGBC)represents 50%-60%of gallbladder cancer *** are conflicting on the role of IGBC diagnosis in oncological *** studies suggest that IGBC diagnosis does not affect outcomes,while others that overall survival(OS)is longer in these cases compared to non-incidental diagnosis(NIGBC).Furthermore,some studies reported early tumour stages and histopathologic characteristics as possible confounders,while others *** To investigate the role of IGBC diagnosis on patients’overall survival,especially after surgical treatment with curative *** Retrospective analysis of all patient referrals with gallbladder cancer between 2008 and 2020 in a tertiary hepatobiliary *** comparison of patient and tumour characteristics between IGBC and NIGBC subgroups was *** analysis for the whole cohort,surgical and non-surgical subgroups was done with the Kaplan-Meier method and the use of log rank *** analysis was performed with univariable and multivariable Cox regression *** the cohort included 261 patients with gallbladder cancer.65%of cases had NIGBC and 35%had IGBC.A total of 90 patients received surgical treatment(66%of IGBC cases and 19%of NIGBC cases).NIGBC patients had more advanced T stage and required more extensive resections than IGBC *** was longer in patients with IGBC in the whole cohort(29 vs 4 mo,Pthe non-surgical(14 vs 2 mo,Pvs 16.5 mo,P=0.001).Disease free survival(DFS)after surgery was longer in patients with IGBC(21.5 mo vs 8.5 mo,P=0.007).N stage and resection margin status were identified as independent predictors of OS and *** diagnosis was identified as an independent predictor of *** IGBC diagnosis may confer a survival advantage independently of the pathological stage and tumour *** studies are required to further investigate this,including detailed

关键词： Gallbladder cancer Incidental gallbladder cancer Non-incidental gallbladder cancer Gallbladder cancer survival

Synthesis,structure and magnetic properties of sm_(1.2)Ho_(0.8)Fe_(17)Hx(X=0;4.4)

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Journal of Rare Earths 2021年第9期39卷 1089-1094页

作者： S.v.veselova M.A.Paukov I.S.Tereshina v.N.verbetsky K.v.Zakharov D.I.Gorbunov A.N.vasiPev Faculty of Physics M.V.Lomonosov Moscow State UniversityMoscow 119991Russia Nuclear Fuel Cycle Department.Centrum vyzkumu Rez Hlavni 130Husinec-Rez 25068.Czech Republic Immanuel Kant Baltic Federal University Kaliningrad 236004Russia Faculty of Mathematics and Physics Charles UniversityPrague 12116Czech Republic Hochfeld-Magnetlabor Dresden(HLD-EMFL) Helmholtz-Zentrum Dresden-RossendorfDresden 07328Germany f National Research South Ural State UniversityChelyabinsk 454080Russia

Intermetallic compounds based on rare-earth metals and iron are by far the most promising materials for permanent mag *** this work,the multicomponent compound sm_(1.2)Ho_(0.8)Fe_(17)was prepared by in duction *** hydride sm_(1.2)Ho_(0.8)Fe_(17)H_(4.4)with a high hydrogen content was obtained by direct hydrogenation of the intermetallic *** rhombohedral th2Zn17-type of structure(space group R3^(-)m)is inhere nt to parent compound and hydride as *** effect of hydrogenation on the magneric properties of sm_(1.2)Ho_(0.8)Fe_(17)was *** temperature of the hydride sm_(1.2)Ho_(0.8)-Fe_(17)H_(4.4)is higher than that of parent compound by△Tc=138 *** hydrogen embedded in sm_(1.2)Ho_(0.8)Fe_(17)crystal lattice in creases the saturation magnetization(σs)at T=300 K,but does not significantly affect%at T=4.2 *** ferrimagnetic structure is retained in magnetic fields up to 58 T in the parent compound,while,in the hydride,there is a spin-reorie ntatio n phase transitio n observed at 55 *** is found that the parameter of the in tersublattice exchange interaction decreases significantly in the hydride sm_(1.2)Ho_(0.8)Fe_(17)Hg_(4.4)(and in the nitride sm_(1.2)Ho_(0.8)Fe_(17)N_(2.4))which is associated with boosting of the unit-cell volume and distances between magnetic ions.

关键词： Intermetallic compound Hydride Crystal structure Magnetization Magnetic phase transition Exchange interaction

Impacts of COvID-19 pandemic on urban park visitation:a global analysis

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Journal of Forestry Research 2021年第2期32卷 553-567页

作者： Dehui(Christina)Geng john Innes Wanli Wu Guangyu Wang Faculty of Forestry University of British Columbia2424 Main MallVancouverBC V6T 1Z4Canada

the COvID-19 pandemic has resulted in over 33 million confirmed cases and over 1 million deaths globally,as of 1 October *** the lockdown and restrictions placed on public activities and gatherings,green spaces have become one of the only sources of resilience amidst the coronavirus pandemic,in part because of their positive effects on psychological,physical and social cohesion and spiritual *** study analyzes the impacts of COvID-19 and government response policies to the pandemic on park visitation at global,regional and national levels and assesses the importance of parks during this global *** data we collected primarily from Google’s Community Mobility Reports and the Oxford Coronavirus Government Response *** results for most countries included in the analysis show that park visitation has increased since February 16th,2020 compared to visitor numbers prior to the COvID-19 *** on social gathering,movement,and the closure of workplace and indoor recreational places,are correlated with more visits to ***-at-home restrictions and government stringency index are negatively associated with park visits at a global *** from residents for parks and outdoor green spaces has increased since the outbreak began,and highlights the important role and benefits provided by parks,especially urban and community parks,under the COvID-19 *** provide recommendations for park managers and other decision-makers in terms of park management and planning during health crises,as well as for park design and *** particular,parks could be utilized during pandemics to increase the physical and mental health and social well-being of individuals.

关键词： COvID-19 COvID-19 response policies Parks visitation Stepwise regression analysis Urban parks

Severity of gastroesophageal reflux disease influences daytime somnolence: A clinical study of 134 patients underwent upper panendoscopy

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World Journal of Gastroenterology 2004年第12期10卷 1798-1801页

作者： Pái Demeter Katalin várdi visy Nóra Gyulai Róbert Sike Tamás G Tóth János Novák Pál Magyar Outpatient Clinic of Gastroenterology St.John's HospitalBudapestHungary Department of Pulmonology Semmelweis Medical UniversityBudapestHungary Dept.of

AIM: To asses the relationship between severity of gastroesophageal refluxe disease and Epworth sleepiness scale as an indicator of daytime somnolence. MEthODS: One hundred and thirty-four patients underwent an upper panendoscopy as indicated by the typical reflux symptoms and were also investigated with regard to somnolence. Sleepiness was evaluated by Epworth Sleepiness Scale, which was compared to the severity of endoscopic findings (Savary-Miller/modified by Siewert). Patients with psychiatric disorders or being on sedato-hypnotics as well as shift workers were excluded from the study. the relationship between the severity of the reflux disease and daytime somnolence was analyzed with the help of multivariate regression analysis. RESULTS: A positive tendency was found between the severity of the reflux disease and the corresponding Epworth Sleepiness Scale. In the case of the more severe type-Savary-Miller Ⅲ- at least a mild hypersomnia was found. For this group daytime somnolence was significantly higher than in the case of the non-erosive type of Gastroesophageal Reflux Disease representing the mildest stage of reflux disease. CONCLUSION: the severity of Gastroesophageal Reflux Disease influences daytime somnolence.

关键词： Severity of Illness Index Adult Aged Disorders of Excessive Somnolence Endoscopy, Digestive System Female Gastroesophageal Reflux Humans Linear Models Male Middle Aged Predictive value of Tests

Regional trauma system development in Shenzhen,China:an 8-year journey

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Military Medical Research 2022年第3期9卷 385-386页

作者： Gui-Xi Zhang Gilberto Ka Kit Leung Chung Mau Lo Richard Kwong-Yin Lo john Wong Ronald v. Maier Eileen M.Bulger Joe King Man Fan Xiao-Bing Fu Chinese PLA Medical School Beijing100853China University of Hong Kong-Shenzhen Hospital Shenzhen518000China Faculty of Medicine University of Hong Kong Li Ka ShingHong Kong999077China Harborview Medical Center SeattleWA98195USA Medical Innovation Research Department and 4th Medical Center Chinese PLA General Hospital and Chinese PLA Medical SchoolBeijing100853China

Dear Editor,Since the late 1980s, trauma in China has been identified as a major public health challenge, with trafic-related fatalities accounting for 80% of accidental deaths[1]. In 2019, Shenzhen had a total population of approximately 20 million, and from 2010 to 2017, both emergency medical services and the total number of trauma patients increased, with trauma accounting for 47.0% and 38.4% of all patients in 2010 and 2017, respectively[2,3]. this report describes the efforts to implement programs and establish a trauma system in Shenzhen, China.

关键词： system services accounting

Probing the scale of new physics in the ZZγ coupling at e^+e^- colliders

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Chinese Physics C 2020年第6期44卷 55-86页

作者： john Ellis Shao-Feng Ge Hong-Jian He Rui-Qing Xiao Department of Physics Kings College LondonStrandLondon WC2R 2LSUKTheoretical Physics DepartmentCERNCH-1211 Geneva 23SwitzerlandNICPBRävala 1010143 TallinnEstonia Tsung-Dao Lee Institute&School of Physics and Astronomy Shanghai Jiao Tong UniversityShanghai 200240China Institute of Modern Physics Tsinghua UniversityBeijing 100084China Center for High Energy Physics Peking UniversityBeijing 100871China

the Z Zγtriple neutral gauge couplings are absent in the Standard Model(sm)at the tree *** receive no contributions from dimension-6 effective operators,but can arise from effective operators of *** study the scale of new physics associated with such dimension-8 operators that can be probed by measuring the reaction e^+e^-→Zγ followed by Z→■■,vv decays,at future e^+e^- colliders including the CEPC,FCC-ee,ILC and *** demonstrate how angular distributions of the final-state mono-photon and leptons can play a key rôle in suppressing sm *** further demonstrate that using electron/positron beam polarizations can significantly improve the signal *** find that the dimension-8 new physics scale can be probed up to the multiTev region at such lepton colliders.

关键词： neutral triple gauge coupling beyond Standard Model e^+e^-colliders