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Barriers and Challenges to the Sustainability Requirements Implementation in Public Procurement of Engineering Works and Services

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Open Journal of Civil Engineering 2017年第1期7卷 1-13页

作者： Clézio Thadeu de Souza Dutra Ubiratan Rohan Robson Rosa Branco Christine Kowal Chinelli alexandre jose vianna barbosa de araujo Carlos Alberto Pereira Soares Graduate Program in Civil Engineering Fluminense Federal University Niterói Brazil

The environmental damage arising from the construction and engineering services was responsible for the appearance of several norms and resolutions regulating and directing the sector’s performance. In this article, we research how professionals with experience in public bids assess the difficulty degree of the implementation of those requirements and how they assess the environmental legislation regarding the protection and conservation of the environment, impact on costs, deadlines and the solution to environmental problems. The results show that industry professionals consider as “high” the level of difficulty to implement the addressed sustainability requirements, and that the Brazilian environmental legislation does not comply with its environmental protection role, increases the possibility of delays and costs of projects and services and hampers the emergence of solutions that could solve environmental problems.

关键词： Environmental Sustainability Requirements Environmental Protection Sustainable Procurement Construction and Engineering Services

What is the effect of Tribulus terrestris on testicular morphology and sperm production?An experimental 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 Sampaio 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 impact on the testicular morphology 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 experiment,the animals were submitted to euthanasia;epididymal tail spermatozoa were collected;and spermatozoa concentration,motility,and viability were *** addition,testicles were collected and processed for histomorphometrical *** were compared using the Student's t-test and considered significant when Pdensity,seminiferous epithelium surface density,and intertubular compartment surface density were statistically similar between the ***,seminiferous epithelium height and tubular lumen surface density were augmented in animals treated with *** with Tt does not cause a major impact on testicular morphology,promoting only subtle *** difference on spermatozoa parameters was observed.

关键词： morphometry testicle Tribulus terrestris

A Family of Methods of the DG-Morley Type for Polyharmonic Equations

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Advances in Applied Mathematics and Mechanics 2010年第3期2卷 303-332页

作者： Vitoriano Ruas jose Henrique Carneiro de araujo UPMC-Univ.Paris 6 UMR7190 Inst.Jean Le Rond d’Alembert/CNRSParisFrance Visiting Professor at Graduate School of Computer ScienceUniversidade Federal FluminenseNiteròiRJBrazil department and Graduate School of Computer Science Universidade Federal FluminenseNiteròiRJBrazil

Discontinuous Galerkin methods as a solution technique of second order elliptic problems,have been increasingly exploited by several authors in the past ten *** is generally claimed the alledged attractive geometrical flexibility of these methods,although they involve considerable increase of computational effort,as compared to continuous *** work is aimed at proposing a combination of DGM and non-conforming finite element methods to solve elliptic m-harmonic equations in a bounded domain of R^(n),for n=2 or n=3,with m≥n+1,as a valid and reasonable alternative to classical finite elements,or even to boundary element methods.

关键词： Discontinuous Galerkin finite elements Hermite tetrahedrons Morley triangle non-conforming polyharmonic equations

Current status and future perspectives of radiomics in hepatocellular carcinoma

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World Journal of Gastroenterology 2023年第1期29卷 43-60页

作者： Joao Miranda Natally Horvat Gilton Marques Fonseca jose de Arimateia Batista araujo-Filho Maria ClaraFernandes Charlotte Charbel Jayasree Chakraborty Fabricio Ferreira Coelho Cesar Higa Nomura Paulo Herman department of Radiology University of Sao PauloSao Paulo 05403-010Brazil department of Radiology Memorial Sloan-Kettering Cancer CenterNew YorkNY 10065United States department of Gastroenterology University of Sao PauloSao Paulo 05403-000Brazil department of Radiology Hospital Sirio-LibanesSao Paulo 01308-050Brazil department of Surgery Memorial Sloan-Kettering Cancer CenterNew YorkNY 10065United States department of Radiology University of Sao PauloSao Paulo 05403-000Brazil

Given the frequent co-existence of an aggressive tumor and underlying chronic liver disease,the management of hepatocellular carcinoma(HCC)patients requires experienced multidisciplinary team ***,imaging plays a key role in the diagnosis,staging,restaging,and surveillance of ***,imaging assessment of HCC entails the assessment of qualitative characteristics which are prone to inter-reader *** is an emerging field that extracts high-dimensional mineable quantitative features that cannot be assessed visually with the naked eye from medical *** main potential applications of radiomic models in HCC are to predict histology,response to treatment,genetic signature,recurrence,and *** the encouraging results to date,there are challenges and limitations that need to be overcome before radiomics implementation in clinical *** purpose of this article is to review the main concepts and challenges pertaining to radiomics,and to review recent studies and potential applications of radiomics in HCC.

关键词： Radiomics Hepatocellular carcinoma Texture analysis Radiology

Combination of WRF Model and LSTM Network for Solar Radiation Forecasting—Timor Leste Case Study

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Computational Water, Energy, and Environmental Engineering 2020年第4期9卷 108-144页

作者： jose Manuel Soares de araujo Electrical and Electronic Engineering Division Graduate School of Natural Science and Technology Gifu University Gifu Japan

A study of a combination of Weather Research and Forecasting (WRF) model and Long Short Term Memory (LSTM) network for location in Dili Timor Leste is introduced in this paper. One calendar year’s results of solar radiation from January to december 2014 are used as input data to estimate future forecasting of solar radiation using the LSTM network for three months period. The WRF model version 3.9.1 is used to simulate one year’s solar radiation in horizontal resolution low scale for nesting domain 1 × 1 km. It is done by applying 6-hourly interval 1º × 1º NCEP FNL analysis data used as Global Forecast System (GFS). LSTM network is applied for forecasting in numerous learning problems for solar radiation forecasting. LSTM network uses two-layer LSTM architecture of 512 hidden neurons coupled with a dense output layer with linear as the model activation to predict with time steps are configured to 50 and the number of features is 1. The maximum epoch is set to 325 with batch size 300 and the validation split is 0.09. The results demonstrate that the combination of these two methods can successfully predict solar radiation where four error metrics of mean bias error (MBE), root mean square error (RMSE), normalized MBE (nMBE), and normalized RMSE (nRMSE) perform small error distribution and percentage in three months prediction where the error percentage is obtained below the 20% for nMBE and nRMSE. Meanwhile, the error distribution of RMSE is obtained below 200 W/m

Improvement of Coding for Solar Radiation Forecasting in Dili Timor Leste—A WRF Case Study

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Journal of Power and Energy Engineering 2021年第2期9卷 7-20页

作者： jose Manuel Soares de araujo Electrical and Electronic Engineering Division Graduate School of Natural Science and Technology Gifu University Gifu Japan

This paper investigates the accuracy of weather research and forecasting by improving coding for solar radiation forecasting for location in Dili Timor Leste. Weather Research and Forecasting (WRF) model version 3.9.1 is used in this study for improvement purposes. The shortwave coding of WRF is used to improve in order to decrease error simulation. The importance of improving WRF coding at a specific region will reduce the bias and root mean square root when comparing to the observed data. This study uses high resolution based on the WRF modeling to stabilize the performance of forecasting. The decrease in error performance will be expected to enhance the value of renewable energy. The results show the root mean square error of the WRF default is 233 W/m2 higher compared to 205 W/m2 from the WRF improvement model. In addition, the Mean Bias Error (MBE) of the WRF default is obtained value 0.06 higher than 0.03 from the WRF improvement in rainy days. Meanwhile, on sunny days, the performance Root Mean Square Error (RMSE) of WRF default is 327 W/m2 higher than 223 W/m2 from the WRF improvement. The MBE of WRF improvement obtained 0.13 lower compared to 0.21 of WRF default coding. Finally, this study concludes that improving the shortwave code under the WRF model can decrease the error performance of the WRF simulation for local weather forecasting.

关键词： Shortwave Radiation Solar Radiation Timor Leste WRF Code Improvement

A Case Study: Performance Comparison of Solar Power Generation between GridLAB-D and SAM in Dili Timor Leste

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Journal of Power and Energy Engineering 2020年第8期8卷 1-22页

作者： jose Manuel Soares de araujo Electrical and Electronic Engineering Division Graduate School of Natural Science and Technology Gifu University Gifu Japan

Study of comparison of solar power generation between the GridLAB-D tool and System Advisor Model (SAM) in Dili, Timor Leste is presented in this paper. Weather Research and Forecasting (WRF) model is used to simulate solar radiation for one calendar year from January to december 2014 using six-hourly interval 1° × 1° NCEP FNL analysis data. The one calendar year results from the WRF model will be used as input data for GridLAB-D and SAM to estimate the solar power generation. GridLAB-D is an open-source and analysis tool designed to operate the distribution power systems with a high-performance algorithm. System Advisor Model version SAM 2017.9.5 is used to estimate solar power performance with Photovoltaics (PVWatts)- Commercial Distributed model. This model is designed to analyze the performance and the financing of renewable energy for electricity generation. The results show the lowest solar radiation is 512 W/m2 obtained in June with an average monthly power of 20.6 kW and 30.55 kW generated from the SAM model and the GridLAB-D simulator, respectively. Meanwhile, the highest solar radiation is 1100 W/m2, 1112 W/m2, 1046 W/m2, and 1077 W/m2 obtained in October, November, December, and January with an average monthly power of 55.72 kW, 62.44 kW, 56.65 kW, and 56.97 kW from the SAM model, in the other hand, 48.89 kW, 51.31 kW, 55.51 kW, and 57.18 kW generated by the GridLAB-D. Finally, the results show that the performance of the GridLAB-D and the SAM model was quite good because both model precisely presented values are almost closest to each other. This study proposes that the results of solar output power from both methods, GridLAB-D and SAM can be used to design grid-connected or stand-alone electric power projects to increase the quality of electricity generation in Dili, Timor Leste.

关键词： GridLAB-D System Advisor Model Solar Power Generation Timor Leste WRF

CFD predictions for hazardous area classification

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Chinese Journal of Chemical Engineering 2019年第1期27卷 21-31页

作者： Andrey Oliveira de Souza Aurélio Moreira Luiz Ant?nio Tavernard Pereira Neto Ant?nio Carlos Brandao de araujo Heleno Bispo da Silva Sidinei Kebler da Silva jose Jailson Nicacio Alves Federal Institute of Education Science and Technology of Paraiba Petrobras-Petróleo Brasileiro S.A. Federal University of Campina Grande

This study aimed to describe a Computational Fluid Dynamics(CFD) procedure using the ANSYS CFX software 16.1 and design of Experiments for the determination of volume and extension of explosive atmospheres due to fugitive emissions of flammable *** multidimensional statistical sampling technique Latin Hypercube was used, which defined 100 simulations of random methane gas leak *** CFD model proved to be robust in predicting the extension and volume of the explosive atmosphere for orifice diameters from 0.1 to2.5 mm, pressure from 0.1 MPa to 12 MPa and temperatures from 0 ℃ to 400 ℃.It was found that the calculation domain must be parameterized 8 m in length for each millimeter of the diameter of the source of release to ensure the *** order not to lose precision for very small diameters, the mesh was parameterized with 50 elements along the orifice *** was proved that gravity does not influence the extension and volume of the explosive atmosphere at sonic *** deviation from the ideal gas behavior in the reservoir,achieved by applying the Soave–Redlich–Kwong equation of state, also has not significantly influenced the extension and volume of the explosive *** results showed that the size of the explosive atmosphere varies directly with the diameter of the source emission and reservoir pressure, and inversely with the temperature of the *** diameter of the source is the parameter that has the major effect on the extension of the explosive atmosphere, followed by the pressure and lastly the temperature of the reservoir.

关键词： Computational Fluid Dynamics Computer simulation Safety Fugitive emissions Classified area Flammable gas cloud

Vibrio *** Macrobrachium amazonicum prawn farming are inhibited by Moringa oleifera extracts

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Asian Pacific Journal of Tropical Medicine 2015年第11期8卷 899-902页

作者： Raimunda Samia Nogueira Brilhante Jamille Alencar Sales Celia Maria de Souza Sampaio Francisco Geraldo barbosa Manoel de araujo Neto Paiva Glaucia Morgana de Melo Guedes Lucas Pereira de Alencar Yago Brito de Ponte Tereza de Jesus Pinheiro Gomes Bandeira jose Luciano Bezerra Moreira debora de Souza Collares Maia Castelo-Branco Waldemiro de Aquino Pereira-Neto Rossana de Aguiar Cordeiro jose Julio Costa Sidrim Marcos Fabio Gadelha Rocha department of Pathology and Legal Medicine Postgraduate Program in Medical MicrobiologySpecialized Medical Mycology CenterFederal University of Ceara School of Veterinary Medicine Postgraduate Program in Veterinary SciencesState University of Ceara department of Organic and Inorganic Chemistry Federal University of Ceara

Objective:To investigate the in vitro antimicrobial potential of extracts of stem,leaves,flowers,pods and seeds of Moringu okifera(***) against Vibrio *** hatchery water and the prawn Mmrobrachium ***:The ethanol extracts of stem,leaves,pods and seeds and chloroform extract of flowers of *** were tested against Vibrio cholerue(***) serogroups non-O1/non-O139(n=4).Vibrio vulnificus(n=l) and Vibrio mimicus(n=1).Escherichia coli(***)(ATCC(?) 25922) was used as quality *** species were obtained from Macmbrachium amazonicum prawns and from hatchery water from prawn *** Minimum Inhibitory Concentration(MIC) was determined by broth microdilution ***:The best result was obtained with the ethanol extract of pods,which inhibited three strains of the ***,Vibrio vulnificus,Vibrio minimis and ***(MIC range 0.312-5.000 mg/mL).The chloroform extract of flowers was effective against all *** strains and ***(MIC range 0.625-1.250 mg/mL).However,the ethanol extracts of stem and seeds showed low effectiveness in inhibiting the bacterial ***:The extracts of pods,flowers and leaves of *** have potential for the control of Vibrio *** studies are necessary to isolate the bioaetive compounds responsible for this antimicrobial activity.

关键词： Prawn Macrobrachium amazonicum Moringa oleifera Vi