Search Results - "Leandro, Carvalho"

Poverty and Economic Decision-Making: Evidence from Changes in Financial Resources at Payday by Carvalho, Leandro S., Meier, Stephan, Wang, Stephanie W.

“…We study the effect of financial resources on decision-making. Lowincome US households are randomly assigned to receive an online survey before or after…”
Get full text

Child Gender and Parental Investments In India: Are Boys and Girls Treated Differently? by Barcellos, Silvia Helena, Carvalho, Leandro S., Lleras-Muney, Adriana

“…Previous research has not always found that boys and girls are treated differently in rural India. However estimates of the effect of gender on parental…”
Get full text

Education can reduce health differences related to genetic risk of obesity by Barcellos, Silvia H., Carvalho, Leandro S., Turley, Patrick

“…This work investigates whether genetic makeup moderates the effects of education on health. Low statistical power and endogenous measures of environment have…”
Get full text

Using learning analytics in the Amazonas: understanding students’ behaviour in introductory programming by Pereira, Filipe D., Oliveira, Elaine H. T., Oliveira, David B. F., Cristea, Alexandra I., Carvalho, Leandro S. G., Fonseca, Samuel C., Toda, Armando, Isotani, Seiji

“…Tools for automatic grading programming assignments, also known as Online Judges, have been widely used to support computer science (CS) courses. Nevertheless,…”
Get full text

Nickel–palladium electrocatalysts for methanol, ethanol, and glycerol oxidation reactions by Carvalho, Leandro L., Colmati, Flavio, Tanaka, Auro A.

“…Carbon-supported Pd and PdNi electrocatalysts with different Ni contents were prepared by metal ion chemical reduction with borohydride. XRF analyses showed…”
Get full text

The effect of saving on risk attitudes and intertemporal choices by Carvalho, Leandro S., Prina, Silvia, Sydnor, Justin

“…We investigate whether access to savings accounts affects choices individuals make about financial risk and intertemporal tradeoffs. We exploit a field…”
Get full text

Living on the edge: Youth entry, career and exit in drug-selling gangs by Carvalho, Leandro S., Soares, Rodrigo R.

“…•We use data from a survey of members of drug gangs in favelas of Rio de Janeiro.•We estimate selection and wage regressions and examine careers in the…”
Get full text

Simultaneous determination of Ba, Co, Fe, and Ni in nuts by high-resolution continuum source atomic absorption spectrometry after extraction induced by solid-oil-water emulsion breaking by Rovasi Adolfo, Franciele, Cícero do Nascimento, Paulo, Brudi, Letícia, Bohrer, Denise, Machado de Carvalho, Leandro

“…[Display omitted] •A simple, low-cost and fast extraction method was developed;•Extraction of Ba, Co, Fe and Ni was achieved by breaking a solid-oil-water…”
Get full text

A new method based on extraction induced by emulsion breaking for determination of Co and Ni in chocolate bars by graphite furnace atomic absorption spectrometry by Rovasi Adolfo, Franciele, Balczareki Lucena, Nicoly, Trombe Do Valle, Lucas, Machado De Carvalho, Leandro, Noremberg Kunz, Simone

“…This paper describes a new experimental configuration of extraction induced by emulsion breaking method to extract and determine Ni and Co in chocolate bars by…”
Get full text

A liquid chromatography-atmospheric pressure photoionization tandem mass spectrometric (LC-APPI-MS/MS) method for the determination of triterpenoids in medicinal plant extracts by Gobo, Luciana Assis, Viana, Carine, Lameira, Osmar Alves, de Carvalho, Leandro Machado

“…An analytical method using liquid chromatography‐atmospheric pressure photoionization tandem mass spectrometry with toluene as a dopant was developed for the…”
Get full text

Palladium-platinum electrocatalysts for the ethanol oxidation reaction: comparison of electrochemical activities in acid and alkaline media by Carvalho, Leandro L., Tanaka, Auro A., Colmati, Flavio

“…Carbon-supported Pd, Pt, Pt 1 Pd 1 , and Pt 3 Pd 1 electrocatalysts were prepared by metal ion chemical reduction with borohydride. The electrocatalysts were…”
Get full text

Obstacles to validating professional experience and the productive integration of refugees: a study among recruiters in the Metropolitan Region of São Paulo by CARVALHO, LEANDRO DE

“…Abstract In recent years, the hundreds of thousands of people arriving in Brazil seeking refuge have been welcomed. After their emergency needs are met, they…”
Get full text

An immunoproteomic approach revealing peptides from Sporothrix brasiliensis that induce a cellular immune response in subcutaneous sporotrichosis by de Almeida, José Roberto Fogaça, Jannuzzi, Grasielle Pereira, Kaihami, Gilberto Hideo, Breda, Leandro Carvalho Dantas, Ferreira, Karen Spadari, de Almeida, Sandro Rogério

“…Sporothrix brasiliensis is the most virulent fungus of the Sporothrix complex and is the main species recovered in the sporotrichosis zoonotic hyperendemic…”
Get full text

Capillary electrophoretic methods for the screening and determination of pharmacologic adulterants in herbal-based pharmaceutical formulations by Moreira, Ana Paula L., Martini, Mariele, de Carvalho, Leandro M.

“…This review aims to describe the CE methods utilized for the determination of adulterants in herbal‐based formulations marketed for different therapeutic…”
Get full text

Gamification suffers from the novelty effect but benefits from the familiarization effect: Findings from a longitudinal study by Rodrigues, Luiz, Pereira, Filipe D., Toda, Armando M., Palomino, Paula T., Pessoa, Marcela, Carvalho, Leandro Silva Galvão, Fernandes, David, Oliveira, Elaine H. T., Cristea, Alexandra I., Isotani, Seiji

“…There are many claims that gamification (i.e., using game elements outside games) impact decreases over time (i.e., the novelty effect). Most studies analyzing…”
Get full text

Neutrophil-suppressive activity over T-cell proliferation and fungal clearance in a murine model of Fonsecaea pedrosoi infection by Breda, Leandro Carvalho Dantas, de Souza Breda, Cristiane Naffah, Kaihami, Gilberto Hideo, de Almeida, José Roberto Fogaça, Jannuzzi, Grasielle Pereira, Ferreira, Lucas Gonçalves, de Almeida, Sandro Rogério

“…Neutrophils are essential to control several fungal infections. These cells are commonly known for their pro-inflammatory activities. However, some studies…”
Get full text

Determination of Ascorbic Acid in Commercial Tablets Using Pencil Drawn Electrochemical Paper-based Analytical Devices by OLIVEIRA, Virgilio X. G., DIAS, Anderson A., CARVALHO, Leandro L., CARDOSO, Thiago M. G., COLMATI, Flavio, COLTRO, Wendell K. T.

“…This study describes the use of electrochemical paper-based analytical devices (ePADs) drawn with graphite pencil for the determination of ascorbic acid (AA)…”
Get full text

Explaining Individual and Collective Programming Students' Behavior by Interpreting a Black-Box Predictive Model by Pereira, Filipe Dwan, Fonseca, Samuel C., Oliveira, Elaine H. T., Cristea, Alexandra I., Bellhauser, Henrik, Rodrigues, Luiz, Oliveira, David B. F., Isotani, Seiji, Carvalho, Leandro S. G.

“…Predicting student performance as early as possible and analysing to which extent initial student behaviour could lead to failure or success is critical in…”
Get full text

Kinetics of Martensite Reversion to Austenite during Overaging in a Maraging 350 Steel by Carvalho, Leandro Gomes de, Plaut, Ronald Lesley, Lima, Nelson Batista de, Padilha, Angelo Fernando

“…The present work has studied the kinetics of partial reversion of martensite into austenite, which occurred during overaging between 520 and 600°C in a…”
Get full text

Extraction induced by emulsion breaking for simultaneous determination of Co, Fe and Ni in petroleum asphalt cement by high-resolution continuum source atomic absorption spectrometry by Rovasi Adolfo, Franciele, Cícero do Nascimento, Paulo, Bohrer, Denise, Viana, Carine, Machado de Carvalho, Leandro, Coutinho Cravo, Margareth C., Nascimento, Luis

“…[Display omitted] •New extraction method for Co, Fe and Ni determination in asphalt is proposed.•Method simpler and faster than methods of total digestion of…”
Get full text