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Ground-borne vibrations induced by imp.ct p.le driving: exp.rimental assessment and mitigation measures

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Earthquake Engineering and Engineering Vibration 2023年第1期22卷 105-115页

作者： A.Colaço A.M.Abouelmaty p.alves Costa CONSTRUCT-FEUp University of PortoRua Dr.Roberto FriasPorto 4200-465Portugal Arab Academy for Science Technology&Maritime TransportCollege of Engineering and TechnologyAlexandriaEgypt

Imp.ct p.le driving is an interesting technique for the construction of deep.foundations from a p.actical and economical p.int of ***,the generalization of this technique can be restricted due to the excessive vibration levels that can be generated,which can be esp.cially p.oblematic in residential ***,different mitigation measures can be ap.lied to p.event excessive vibration levels inside buildings located near construction *** comp.re its efficiency through a numerical p.ediction tool,two exp.rimental test sites are first p.esented and *** the results obtained,it was found that the construction of an op.n trench near the imp.ct source can be used as an efficient mitigation measure to reduce the maximum vibration levels evaluated in this study.

关键词： imp.ct p.le driving ground-borne vibrations exp.rimental and numerical analysis mitigation measures

p.ediction of ground-borne vibration induced by imp.ct p.le driving:numerical ap.roach and exp.rimental validation

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Earthquake Engineering and Engineering Vibration 2023年第4期22卷 921-935页

作者： A.Colaço p.alves Costa C.Ferreira C.p.rente J.Fernandez-Ruiz CONSTRUCT-FEUp University of PortoRua Dr.Roberto Frias4200-465 PortoPortugal University of La Coruña Department of Civil EngineeringCampus de Elviña 15071La CoruñaSpain

Deep.foundations are currently used in engineering p.actice to solve p.oblems caused by weak geotechnical characteristics of the *** p.le driving is an interesting and viable solution from economic and technical p.ints of ***,it is necessary to ensure that the environmental drawbacks,namely ground-borne vibration,are adequately *** this p.rp.se,the authors p.op.se an axisymmetric finite element method-p.rfectly matched layer(FEM-p.L)ap.roach,where the nonlinear behavior of the soil is addressed through an equivalent linear *** the comp.exity of the p.oblem,an exp.rimental test site was develop.d and fully *** exp.rimental work comp.ised in-situ and laboratory soil characterization,as well as the measurement of vibrations induced during p.le *** comp.rison between exp.rimental and numerical results demonstrated a very good agreement,from which it can be concluded that the p.op.sed numerical ap.roach is suitable for the p.ediction of vibrations induced by imp.ct p.le *** exp.rimental database is available as sup.lemental data and may be used by other researchers in the validation of their p.ediction models.

关键词： p.le driving ground-borne vibrations numerical modeling exp.rimental validation

Crystal structure and magnetic p.op.rties of YbZn_(0.7)In_(1.3)

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Journal of Rare Earths 2011年第10期29卷 943-945页

作者： Yu.Verbovytskyy L.C.J.p.reira A.p.Gon alves Dep.rtment of Chemistry Nuclear and Technological InstituteNational Rd.102686-953SacavémPortugal

The new ternary YbZn0.7Inl.3 comp.und was synthesized in evacuated quartz amp.ules at 900 ℃, followed by annealing at 400 ℃. It crystallized in the UHg2 structure typ. with a=0.47934（5） nm, c=0.36955（5） nm, V=0.073535（15） nm3. The shortest distances between the atoms in this structure were equal to 0.3696 nm （Yb-Yb）, 0.3328 nm （Yb-M） and 0.2767 nm （M M）, resp.ctively. Magnetization measurements indicated that the title comp.und exhibited a p.ramagnetic behavior down to 2 K, with antiferromagnetic-like interactions. Calculated magnetic moment for YbZn0.7inl.3 （μeft =3.86μB/Yb） could indicate mixed valence state of Yb.

关键词： ytterbium intermetallics crystal structure magnetic measurements rare earths

Influence of biological maturation on cardiac autonomic recovery in female volleyball p.ayers during&after rep.ated sp.ints training:An exp.rimental trial

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Sp.rts Medicine and Health Science 2024年第3期6卷 279-286页

作者： p.ulo Francisco de Almeida-Neto Fernanda Cristina Silva de Oliveira Jose Marcondes de Oliveira-Júnior Júlio Cesar Medeiros alves Matheus de Lima Rocha Iago Medeiros da Silva Roberto Felip. C^amara Rocha p.ulo Moreira Silva Dantas Breno Guilherme de Araújo Tin^oco Cabral Health Sciences Center Federal University of Rio Grande do NorteCCS-UFRNNatal59012-570RNBrazil Dep.rtment of p.ysical Education Federal University of Rio Grande do NorteDEF-UFRNNatal59078-970RNBrazil

p.eviously,it was suggested that biological maturation(BM)could be linked to cardiac autonomic recovery(CAR)in the p.diatric ***,this influence hasn’t been confirmed *** aim was to investigate the imp.ct of BM on CAR in female volleyball *** study with a samp.e of 38 volleyball p.ayers,comp.ising 20 girls(age:[11.62.1]years)and 18 women(age:[24.55.5]years),we analyzed BM,comp.ring maturing subjects(girls)with mature subjects(women).Additionally,we assessed p.ak height velocity(p.V)in *** conducted a training session involving rep.ated sp.ints(3 rounds of 6 sp.ints intersp.rsed by 5 min[min]of p.ssive rest).Using short-range radio telemetry,we analyzed CAR during(at the end of the 1st and 2nd rounds)and after(following the 3rd round)the training session of rep.ated sp.ints by ap.lying the 60-s to 300-s heart rate recovery index(HRR-Index).Girls exhibited sup.rior CAR comp.red to women(round 2:60-s,120-s,240-s,and 300-s,p.0.005).Subgroup.analyses of BM indicated that individuals in the Late-p.V stage demonstrated sup.rior CAR comp.red to those in the Early-p.V and During-p.V group..(60-s to 300-s,η2p.0.4,p.0.05).Subjects in the During-p.V stage were sup.rior to those in the Early-p.V stage(240-sa 300-s,η2 p.0.4,p.0.05).We have concluded that biological maturation has a significant imp.ct on cardiac autonomic recovery.

关键词： Exercise Sp.rt Volleyball Heart rate p.diatric

Hydrocarbons in p.rticulate samp.es from wildfire events in central p.rtugal in summer 2010

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Journal of Environmental Sciences 2017年第3期29卷 122-131页

作者： Ana Vicente Ana Calvo Ana p.Fernandes Teresa Nunes Cristina Monteiro Casimiro p.o Célia alves Centre for Environmental and Marine Studies (CESAM) Department of EnvironmentUniversity of Aveiro Dep.rtment of p.ysics IMARENABUniversity of León

In summer 2010, twenty eight （14 p.=2.5 samp.es p.us 14 samp.es p.2.5-10） smoke samp.es were collected during wildfires that occurred in central p.rtugal. A p.rtable high-volume samp.er was used to p.rform the samp.ing, on quartz fibre filters of coarse （p.=2.5-10） and fine （p.2.5） smoke samp.es. The carbonaceous content （elemental and organic carbon） of p.rticulate matter was analysed by a thermal-op.ical technique. Subsequently, the p.rticulate samp.es were solvent extracted and fractionated by vacuum flash chromatog- rap.y into three different classes of organic comp.unds （alip.atics, p.lycyclic aromatic hydrocarbons （p.Hs） and carbonyl comp.unds）. The organic sp.ciation was p.rformed by gas chromatograp.y-mass sp.ctrometry （GC-MS）. Emissions were dominated by the fine p.rticles, which rep.esented around 92% of the p.10. A clear p.edominance of carbonaceous constituents was observed, with organic to elemental carbon （OC/EC） ratios ranging between 1.69 and 245 in both size fractions. The isop.enoid ketone 6,10,14-trimethyl-2-p.ntadecanone, a tracer for secondary organic aerosol formation, was one of the dominant constituents in both fine and coarse p.rticles. Retene was the most abundant comp.und in all samp.es. Good correlations were obtained between OC and both alip.atic and p.H comp.unds. p.rogenic p.ocesses, thermal release of biogenic com- p.unds and secondary p.ocessing accounted for 97% of the ap.ortioned p.2.5 levels.

关键词： WildfiresOrganic carbonOrganic comp.undsBiomarkersp.rticulate matterp.rtugal

What is the effect of Tribulus terrestris on testicular morp.ology and sp.rm p.oduction?An exp.rimental study in the rat model

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Asian Journal of Andrology 2024年第1期26卷 67-70页

作者： Marcello Henrique Araujo Da Silva Gabriela Faria Buys-Goncalves Joao Henrique Duque Reis Estrada Francisco Jose Barcellos Samp.io Diogo Benchimol de Souza Urogenital Research Unit Rio de Janeiro State UniversityRio de Janeiro 20551-030RJBrazil

The objective of this study was to investigate whether treatment with Tribulus terrestris(Tt)has any imp.ct on the testicular morp.ology and function in a rodent *** male rats were divided into a control group.and a group.receiving 100 mg kg^(-1) body weight of Tt *** 4o days of exp.riment,the animals were submitted to euthanasia;ep.didymal tail sp.rmatozoa were collected;and sp.rmatozoa concentration,motility,and viability were *** addition,testicles were collected and p.ocessed for histomorp.ometrical *** were comp.red using the Student's t-test and considered significant when p.*** concentration,motility,and viability showed no difference between the ***,testicular weight and volume,seminiferous tubule diameter,tunica p.op.ia surface density,seminiferous ep.thelium surface density,and intertubular comp.rtment surface density were statistically similar between the ***,seminiferous ep.thelium height and tubular lumen surface density were augmented in animals treated with *** with Tt does not cause a major imp.ct on testicular morp.ology,p.omoting only subtle *** difference on sp.rmatozoa p.rameters was observed.

关键词： morp.ometry testicle Tribulus terrestris

Remaining p.osp.orus Estimate Through Multip.e Regression Analysis

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p.dosp.ere 2006年第5期16卷 566-571页

作者： M.E.alves A.LAVORENTI Dep.rtamento de Ciencias Exatas Escola Superior de Agriculture‘Luiz de Queiroz’-ESALQ/USPPiracicaba (SP) 13418-900 (Brazil)

The remaining p.osp.orus (p.em), p.concentration that remains in solution after shaking soil with 0.01 mol L-1 CaCl2 containing 60μg mL-1 p. is a very useful index for studies related to the chemistry of variable charge soils. Although the p.em determination is a simp.e p.ocedure, the p.ssibility of estimating accurate values of this index from easily and/or routinely determined soil p.op.rties can be very useful for p.actical p.rp.ses. The p.esent research evaluated the p.em estimation through multip.e regression analysis in which routinely determined soil chemical data, soil clay content and soil p. measured in 1 mol L-1 NaF (p.NaF) figured as p.em p.edictor variables. The p.em can be estimated with accep.able accuracy using the above-mentioned ap.roach, and p.NaF not only substitutes for clay content as a p.edictor variable but also confers more accuracy to the p.em estimates.

关键词： anionic adsorp.ion p.NaF p.dotransfer functions trop.cal soils

可自动校准距离的智能手机视力测试Ap.(WHOeyes)的真实世界应用

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眼科学报 2024年第9期 431-442页

作者：吴怡 Stuart Keel Vera Lúcia alves Carneiro 张释然王伟刘驰汤璇璋韩晓彤何明光中山大学中山眼科中心眼病防治全国重点实验室广东省眼科与视觉科学重点实验室广东省眼科疾病临床研究中心 WHO非传染性疾病司视觉和眼健康项目组中国澳门特别行政区澳门城市大学数据科学学院香港理工大学眼科视光学院香港理工大学SHARp.觉研究中心

目的：开发一款可自动校准测试距离的智能手机视力检测Ap.(WHOeye的iOS版本)，并评估其实用性。方法：WHOeyes在经过验证的视力检测Ap. “V@home”的基础上新增自动距离校准(automatic distance calibration, ADC)功能。研究招募了3组... 详细信息

目的：开发一款可自动校准测试距离的智能手机视力检测Ap.(WHOeye的iOS版本)，并评估其实用性。方法：WHOeyes在经过验证的视力检测Ap. “V@home”的基础上新增自动距离校准(automatic distance calibration, ADC)功能。研究招募了3组不同年龄(≤20岁、20～40岁、>40岁)的中国受试者，分别使用糖尿病视网膜病变早期治疗研究(Early Treatment Diabetic Retinop.thy Study, ETDRS)视力表和WHOeyes进行远距离和近距离的视力检测。ADC功能用于确定WHOeyes的测试距离。红外测距仪用于确定ETDRS的测试距离以及WHOeyes的实际测试距离。通过问卷调查评估用户满意度。结果：WHOeyes ADC确定的实际测试距离在3个年龄组中均与预期测试距离总体上表现出良好的一致性(p. 0.50)。在远距离和近距离视力检测方面，WHOeyes的准确性与ETDRS相当。WHOeyes与ETDRS之间的平均视力差异范围为–0.084～0.012 logMAR，各组的二次加权卡帕系数(quadratic weighted kap.a, QWK)均大于0.75。WHOeyes在近距离和远距离视力检测中的重测信度高，平均差异范围为–0.040～0.004 logMAR,QWK均大于0.85。问卷调查显示WHOeyes具有较好的用户体验和接受度。结论：与金标准ETDRS视力表方法相比，WHOeyes测试距离较为准确，可以提供准确的远距离和近距离视力测量结果。

关键词：智能手机视力检查 WHOeyes V@home ETDRS

Red deer as a disp.rser of native,but not invasive p.ants’seeds

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Integrative Zoology 2023年第5期18卷 859-866页

作者： Fernanda GARCIA António alves DA SILVA Ruben HELENO Josép.ulo SOUSA Joana alves Centre for Functional Ecology(CFE) TERRA Associate LaboratoryDepartment of Life SciencesUniversity of CoimbraCoimbraPortugal

INTRODUCTION Seed disp.rsal is a key p.ocess in the life cycle of most p.ants,with ecological and evolutionary consequences that go beyond vegetation dynamics and cascade to entire ecosystem functioning and stability(Traveset et al.2014).Seed disp.rsal largely constrains p.ant recruitment and the distribution of future p.ant cohorts,thus p.aying a critical role in the restoration of disturbed sites(Cain et al.2000;Higgins et al.2003).It can also threaten p.ant diversity by facilitating p.ant invasions(Vavra et al.2007;Heleno 2020).

关键词： consequences disp.rse disturbed