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Indirect determination of shear wave velocity in slow formations using full-wave sonic logging technique

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Journal of Rock Mechanics and Geotechnical Engineering 2020年第6期12卷 1226-1233页

作者： francisco Beltran Alvaro Yañez-Gonzalez María J.Crespo Belgar Engineering Consultants Gabriel García Márquez 9Collado-Villalba28400Spain ESTEYCO Menéndez Pidal 17Madrid28036Spain Principia Engineering Consuxltants Velázquez 94Madrid28006Spain

This article presents a case study concerning a seismic characterization ***-wave sonic logging was used to characterize the shallow compressional wave and shear wave velocity profiles in the *** values of the Poisson’s ratio derived from the velocity profiles suggested that the boreholes might have traversed slow formations(*** shear wave velocity smaller than the borehole fluid compressional wave velocity or“mud-wave speed”)and that conventional processing of the sonic logs might have misinterpreted the direct arrivals of fluid acoustic waves as arrivals caused by shear wave propagation in the ***,the shear wave velocity profiles provided by the contractor were considered to be unreliable by the project *** address these problems,a non-conventional determination of the shear wave velocity was implemented,based on the relationship between the Poisson’s ratio of the rock formation and the shape of the first train of sonic waves which arrived to the receivers in the sonic *** relationship was determined based on several hundreds of finite element simulations of the acoustic wave propagation in boreholes with the same diameter as used in the *** present article describes how this non-conventional approach was developed and implemented to obtain the shear wave velocity profiles from the raw sonic *** approach allows an extension of the range of applicability of full-wave sonic logging to determination of shear wave velocity profiles in formations with low compressional wave *** method could be used to obtain shear wave velocity profiles where compressional wave velocity is as low as slightly larger than the mud-wave speed.A sample sonic log in Log ASCII Standard(LAS)format is provided as supplementary material to this paper via Mendeley Data,together with the FORTRAN source code used to process the log following the approach described in this study.

关键词： Sonic logging Slow formation Shear wave velocity Poisson’s ratio P-wave packet

Efficacy of Afoxolaner Alone or in Combination with Milbemycin Oxime against Rhipicephalus sanguineus Lato Sensu in Naturally Infested Dogs in Colombia

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Open Journal of Veterinary Medicine 2022年第4期12卷 27-36页

作者： Victor molina Diego Pérez Jorge Prada Luis Carlos Perez Cogollo Natalia Pedraza francisco Perozo Frederic Beugnet Boehringer Ingelheim Animal Health Bogotà Colombia University of Medellín Medellín Antioquia Colombia University of Córdoba Montería Colombia University of the Llanos Villavicencio Meta Colombia

The brown dog tick (Rhipicephalus sanguineus lato sensu) is the tick that most affects dogs worldwide and is therefore the main blood pathogen vector in dogs. The efficacy of afoxolaner 2.7 to 7.1 mg/kg NexGard® (group A) and afoxolaner plus milbemycin oxime 2.5 to 5.4 mg/kg and 0.5 to 1.1 mg/kg respectively NexGard Spectra® (Group B) against R. sanguineus, was evaluated in naturally infected sheltered dogs under high challenging conditions in four different areas of Colombia (Antioquia, Córdoba, Santander, and Meta). Tick counts (alive, dead, attached, and unattached) were performed on treated dogs, the average was calculated for the different areas to evaluate the efficacy of each treatment at six different times post-treatment (24 h, 48 h, 7 d, 14 d, 21 d, 30 d). None of the dogs showed adverse events related to the treatments. The average tick number pre-treatment was 68 in group A and 78.3 for group B indicating a strong natural infection of the dogs and their environment. Efficacy after 24 h against R. sanguineus was always above 90% with ≥97.4% for NexGard® and ≥93.7% for NexGard Spectra®. Consistent results were observed along all the observation periods with final efficacies (day 30) of ≥99.8% and 98.3% for NexGard® and NexGard Spectra®, respectively. In conclusion, both NexGard® and Nexgard Spectra® provided a curative effect and sustained efficacy against Rhipicephalus sanguineus for at least 30 days in highly contaminated shelter environments.

关键词： Afoxolaner Milbemycin Oxime Rhipicephalus sanguineus Dogs Shelter

Combined grafts and flaps in urethral stricture repair

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Plastic and Aesthetic Research 2022年第1期9卷 213-224页

作者： francisco Dávila Tiago Rosito Borko Stojanovic francisco E.Martins Department of Urology Hospital de Clínicas de Porto AlegreUFRGSPorto Alegre 90035-903Brazil Department of Urology Belgrade Center for Urogenital Reconstructive SurgerySchool of MedicineUniversity of BelgradeBelgrade 11000Serbia Department of Urology School of MedicineUniversity of LisbonCHULNLisbon 1649-028Portugal

Although urethral strictures have been known since antiquity,the surgical management of urethral strictures has undergone a great(re)evolution over the last six decades,both in the perception of the disease and in the surgical repair techniques,always presenting itself as a challenge for the surgeon and *** of urethral stricture disease involving a combination of grafts and flaps consists of a group of complex procedures with specific clinical *** knowledge of these procedures by reconstructive urologists is both necessary and relevant.A thorough understanding of the anatomy,including blood supply,is a crucial proviso for the correct evaluation and successful management of urethral stricture *** discuss the main techniques and indications in combined graft and flap urethroplasties.

关键词： Urethral stricture urethral stenosis genital flap penile flap reconstructive urology combined urethral surgery

Searching for the earliest galaxies in the 21cm forest

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Science China(Physics,Mechanics & Astronomy) 2010年第6期53卷 1124-1129页

作者： Andrea FERRARA francisco S. KITAURA Scuola Normale Superiore Piazza dei Cavalieri 756126 PisaItaly

We use a model developed by Xu,Ferrara,and Chen(Mon Not Roy Astron Soc,submitted) to compute the 21 cm line absorption signatures imprinted by star-forming dwarf galaxies(DGs) and starless minihalos(MHs). The method,based on a statistical comparison of the equivalent width(W ν ) distribution and flux correlation function,allows us to derive a simple selection criteria for candidate DGs at very high(z ≤ 8) redshift. We find that ≈18% of the total number of DGs along a line of sight to a target radio source(GRB or quasar) can be identified by the condition W ν0.37 kHz instead selects ≈11% of MHs. Selected candidate DGs could later be re-observed in the near-IR by the JWST with high efficiency,thus providing a direct probe of the most likely reionization sources.

关键词： cosmology dwarf galaxies high-redshift galaxies radio absorption lines

Search for desisn intellisence： A field study on the role of emotional intellisence in architectural design studios

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Frontiers of Architectural Research 2014年第4期3卷 413-423页

作者： Sajjad Nazidizaji Ana Tome francisco Resateiro ICIST DECivil Instituto Superior Tecnico Universidade de Lisboo Avenida Rovisco Pais 1Lisboa 1049-001 Portugal CESUR DECivil Instituto Superior Tecnico Universidade de Lisboa Avenida Rovisco Pais ILisboa 1049-001 Portugal

The design studio is the core of the architecture curriculum. Interpersonat interactions have a key rote during the processes of design and critique. The influence of emotional intelligence （EQ） on interpersonal communication skirts has been widely proven. This study examines the correlation between EQ and architecturat design competence, To achieve this, 78 architecture students were setected via a simple random sampling method and tested using an EO. test questionnaire developed by Bradbury and Greaves （2006）. The scores of five architectural design studio courses （ADS-1, ADS-2, ADS-3, ADS-4, and ADS-5） were used as indicators of the progress in design of the students. Descriptive and inferential statistics methods were both employed to anatyze the research data. The methods inctuded corretation analysis, mean comparison t-test for independent samptes, and single sample t-test. Findings showed no significant relationship between EQ and any of the indicators.

关键词： Emotional intelligence (EQ) Architectural education Design competence Design studio

Clinical variants of pityriasis rosea

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World Journal of Clinical Cases 2017年第6期5卷 203-211页

作者： francisco Urbina Anupam Das Emilio Sudy Dermatologists in Private Practice Dermatology KPC Medical College and Hospital

Pityriasis rosea(PR) is a common erythemato-squamous dermatosis which almost always, is easily diagnosed. Mostly the disease presents in its classical form. However, clinical dermatology is all about variations and PR is not an exception. Variants of the disease in some cases may be troublesome to diagnose and confuse clinicians. Prompt diagnosis and treatment of the condition becomes necessary to avoid unnecessary investigations. We hereby review and illustrate atypical presentations of the disease, including diverse forms of location and morphology of the lesions, the course of the eruption, and its differential diagnoses.

关键词： Pityriasis Pityriasis rosea Pityriasis rosea of Gibert Herald patch Papulo-squamous dermatosis

Does the smartest designer design better？ Effect of intelligence quotient on students＇ design skills in architectural design studio

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Frontiers of Architectural Research 2015年第4期4卷 318-329页

作者： Sajjad Nazidizaji Ana Tome francisco Regateiro CERIS DECivil Instituto Superior Tecnico Universidude de Lisboa Lisboa 1049-001 Portugal

Understanding the cognitive processes of the human mind is necessary to further learn about design thinking processes. Cognitive studies are also significant in the research about design studio. The aim of this study is to examine the effect of designers intelligence quotient （lOJ on their designs. The statistical population in this study consisted of all Deylaman Institute of Higher Education architecture graduate students enrolled in 2011. Sixty of these students were selected via simple random sampling based on the finite population sample size calculation formula. The students＇ IQ was measured using Raven＇s Progressive Matrices. The students＇ scores in Architecture Design Studio （ADS） courses from first grade （ADS-l） to fifth grade （ADS-5） and the mean scores of the design courses were used in determining the students＇ design ability. Inferential statistics, as well as correlation analysis and mean comparison test for independent samples with SPSS, were also employed to analyze the research data. Results indicated that the students＇ IQ ADS-1 to ADS-4 scores, and the mean scores of the students＇ design courses were not significantly correlated. By contrast, the students＇ IQ and ADS-5 scores were significantly correlated. As the complexity of the design problem and designers＇ experience increased, the effect of IQ on design seemingly intensified.

关键词： Architectural designstudio Intelligence quotient(IQ) Design education Human factors Design thinking

Autologous bone marrow mononuclear cells as neuroprotective treatment of amyotrophic lateral sclerosis

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Neural Regeneration Research 2016年第4期11卷 568-569页

作者： francisco José Ruiz-López Miguel Blanquer pneumology service virgen de la arrixaca hospitalmurcia universityimibMurciaSpain hematopoietic progenitors transplant and cell therapy unit virgen de la arrixaca hospitalmurcia universityimibMurciaSpain

Amyothrophic lateral sclerosis（ALS）is a disorder characterized by the progressive degeneration of motoneurons and subsequent weakness of the skeletal *** insufficiency is the most common cause of death for these pat... 详细信息

关键词： bone GDNF

AN IMPLEMENTATION OF THE COLLOCATION METHOD FOR INITIAL VALUE PROBLEMS

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International Journal of Modeling, Simulation, and Scientific Computing 2013年第2期4卷 142-154页

作者： RAFAEL G.CAMPOS francisco DOM´INGUEZ MOTA Facultad de Ciencias Fısico-Matematicas Universidad Michoacana 58060 MoreliaMich.Mexico

An implementation of the standard collocation method based on polynomial interpolation is presented in a matrix framework in this *** underlying differentiation matrix can be partitioned to yield a superconvergent implicit multistep-like method to solve the initial value problem *** first-and second-order versions of this method are L-stable.

关键词： IVP ODE collocation differentiation matrix interpolation superconvergence stability