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Mostrando 13-24 de 3481 artigos, teses e dissertações.
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13. Development of Analytical Method for Determination of Inorganic Constituents in Powder Refreshment Using Dilute Mineral Acids and Detection by ICP OES
An analytical method for multi-elementary determination in powder refreshment, based on sample digestion using dilute mineral acids and detection by inductively plasma coupled optical emission spectrometry (ICP OES) is proposed. Chemometric tools, such as fractional factorial design and principal component analysis (PCA) and hierarchical cluster analysis (HC
J. Braz. Chem. Soc.. Publicado em: 2021-07
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14. Postural balance, handgrip strength and mobility in Brazilian children and adolescents with osteogenesis imperfecta
Abstract Objective To describe postural balance, handgrip strength and mobility in children and adolescents with different types of osteogenesis imperfecta. Methods Cross-sectional study. Fifty selected subjects diagnosed with types I (n = 11), III (n = 21), and IV (n = 18), followed up at Brazilian reference center for osteogenesis imperfecta in the Midwe
J. Pediatr. (Rio J.). Publicado em: 2021-06
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15. Surgical Treatment for a Super-Giant Right Coronary Artery Aneurysm Induced by Kawasaki Disease
Abstract A 32-year-old man diagnosed with Kawasaki disease at the age of three years presented with coronary artery aneurysm (CAA). The aneurysm increased in size, and the patient was referred to our hospital for surgery. Preoperative computed tomography scan showed a super-giant right CAA and giant left CAAs; surgery was performed. The super-giant right CAA
Braz. J. Cardiovasc. Surg.. Publicado em: 2021-06
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16. Robot-assisted vesico-vaginal fistula repair: technical nuances
ABSTRACT Introduction: Vesico-vaginal fistula (VVF) is a rare event in Western countries and are mainly consequent to iatrogenic injuries (1, 2). When conservative management fails, surgical repair is needed, although timing and surgical approach (open or minimally invasive (3)) are still controversial (4, 5). Herein we present a step-by-step description of
Int. braz j urol.. Publicado em: 2021-06
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17. Ataulpho de Paiva Foundation on the stage of BCG
ABSTRACT Introduction: Vesico-vaginal fistula (VVF) is a rare event in Western countries and are mainly consequent to iatrogenic injuries (1, 2). When conservative management fails, surgical repair is needed, although timing and surgical approach (open or minimally invasive (3)) are still controversial (4, 5). Herein we present a step-by-step description of
Int. braz j urol.. Publicado em: 2021-06
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18. Microwave-Assisted Acid Digestion: Evaluation of Reaction Vessel Design and Performance
Nowadays, microwave-assisted procedures using closed vessels with thermal, chemical, and mechanical resistance are the state-of-the-art for efficient digestion of samples. Safety issues related to sample reactivity should be considered and analytical throughput is also a critical parameter. The choice of a specific vessel for a target application is not triv
J. Braz. Chem. Soc.. Publicado em: 2021-04
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19. Efeitos do Hydrosalpinx no Falho de Implantação Endometrial: Avaliar a salpingectomia nas mulheres em curso de Fertilização in vitro
Abstract Hydrosalpinx is a disease characterized by the obstruction of the salpinx, with progressive accumulation in the shape of a fluid-filled sac at the distal part of the tuba uterina, and closed to the ovary. Women with hydrosalpinges have lower implantation and pregnancy rates due to a combination of mechanical and chemical factors thought to disrupt t
Rev. Bras. Ginecol. Obstet.. Publicado em: 2021-04
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20. PEACH PIT CHEMICALLY TREATED BIOMASS AS A BIOSORBENT FOR METFORMIN HYDROCHLORIDE REMOVAL: MODELING AND SORPTION MECHANISMS
ABSTRACT In this work, the potential of peach pit biosorption in the removal of the drug metformin hydrochloride from water is evaluated. Experiments are carried out in a closed batch system to evaluate the effect of the solution pH (2–10), temperature (25, 35 and 45 °C), stirring (100, 150 and 200 rpm) and chemical treatments. During the study, biosorben
Eng. Agríc.. Publicado em: 2021-04
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21. Multi-Step-Ahead Spectrum Prediction for Cognitive Radio in Fading Scenarios
Abstract This paper analyzes multi-step-ahead spectrum prediction for Cognitive Radio (CR) systems using several future states. A slot-based scenario is used, and prediction is based on the Support Vector Machine (SVM) algorithm. The aim is to determine whether multi-step-ahead spectrum prediction has gains in terms of reduced channel-switching and increased
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2020-12
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22. OTIMIZAÇÃO DO PROCESSO NÃO INVASIVO E NÃO DESTRUTIVO DE EXTRAÇÃO E ANÁLISE DE METABÓLITOS VOLÁTEIS DE MAMÃO PAPAIA POR SPME-GC-MS
The analysis of volatiles is an alternative in the routine of quality control of fruits, since the volatile metabolites can change in the presence of microorganisms. A well-established method for extracting volatiles is the solid phase microextraction (SPME). This work aims to define some parameters (fiber coating, conditioning time and fiber exposure time)
Quím. Nova. Publicado em: 2020-09
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23. Conservation of crisp lettuce in different post-harvest storage conditions
ABSTRACT The objective of this work was to evaluate the post-harvest quality and the final storage time of the hydroponic crisp lettuce ‘Brida’, conditioned in different types of plastic packaging and environments. The statistical design was a completely randomized 3x2 factorial design, with 3 types of packages (control (without plastic packaging), perf
Rev. Ceres. Publicado em: 2020-08
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24. Prevalence and associated factors with depression and anxiety in prisoners in South of Brazil
Abstract Background Brazil has the third largest prison population in the world. Research in the world has confirmed a high prevalence of mental disorders in this population. Objective To identify prevalence and associated factors with depression and anxiety in prisoners of the closed prison system. Methods This is a cross-sectional study with 643 pris
Arch. Clin. Psychiatry (São Paulo). Publicado em: 2020-08