Modal parameters identification of heavy-haul railway RC bridges - experience acquired

Sampaio, Regina,Chan, Tommy H.T. Techno-Press 2015 Structural monitoring and maintenance Vol.2 No.1

Traditionally, it is not easy to carry out tests to identify modal parameters from existing railway bridges because of the testing conditions and complicated nature of civil structures. A six year (2007-2012) research program was conducted to monitor a group of 25 railway bridges. One of the tasks was to devise guidelines for identifying their modal parameters. This paper presents the experience acquired from such identification. The modal analysis of four representative bridges of this group is reported, which include B5, B15, B20 and B58A, crossing the Caraj$\acute{a}$s railway in northern Brazil using three different excitations sources: drop weight, free vibration after train passage, and ambient conditions. To extract the dynamic parameters from the recorded data, Stochastic Subspace Identification and Frequency Domain Decomposition methods were used. Finite-element models were constructed to facilitate the dynamic measurements. The results show good agreement between the measured and computed natural frequencies and mode shapes. The findings provide some guidelines on methods of excitation, record length of time, methods of modal analysis including the use of projected channel and harmonic detection, helping researchers and maintenance teams obtain good dynamic characteristics from measurement data.

Root Biomass under Stem Bases and at Different Distances from Trees in the Brazilian Caatinga

Everardo Sampaio,Eliza Albuquerque,Frans Pareyn,Elcida Araujo 한국토양비료학회 2014 한국토양비료학회 학술발표회 초록집 Vol.2014 No.6

로랑 드 라 이르의 <안느 도트리슈의 섭정 알레고리> : 알레고리 언어의 회화적 수용방식에 관하여

( Raúl Sampaio Lopes ) 한국프랑스고전문학회 2012 프랑스고전문학연구 Vol.15 No.-

본고는 알레고리를 다룬 회화작품을 분석하기 위해 미술사에서 참고로삼는 자료들을 소개하는 것을 목적으로 삼는다. 그 대상이 되는 작품으로 로랑 드 라 이르의 1648년 회화작품인 <안느 도트리슈의 섭정 알레고리>를 선정하였고, 이 작품의 분석에 필요한 자료로 세자레 리파의 저서, 화가들의 알레고리 사용에 대한 당대의 증언들을 참고자료로 삼았다. 로랑 드 라이르의 이 작품은 1648년에 제작된 것으로 루브르미술관의 소장 작품임에도 현재는 베르사이유궁에 전시되어 있다. 작품의 출처에 대해서는 정확히 밝혀지지 않았으나 아마도 보다 더 규모가 큰 장식의 일부였을 것으로 추정된다. 로랑 드 라 이르(1606-1656)는 일반대중에게는 잘 알려지지 않은 프랑스화가이지만 17세기 회화사에서 차지하는 중요성은 결코 간과할 수 없다. 제2세대 퐁텐블로 학파의 계승자인 라 이르는 자신의 방대한 예술적, 문학적, 학문적 소양에 힘입어 퐁텐블로 학파의 영향을 뛰어넘기에 이른다. 그렇게 해서 환한 색채의 회화, 정연한 회화를 고안해 내면서 인간과 자연에 대한 시(詩)에 자리를 내어준다. 본고에서 필자가 하나의 예시로 삼은 <안느 도트리슈의 섭정 알레고리>에서, 라 이르는 리파에 의해 코드화된 알레고리 규범들을 참고로 하면서 자기 작품 안에 그 요소들을 구성하며, 때로는 여러 가지알레고리의 교차된 의미들을 중복시킴으로써 리파의 코드들을 자신이 얼마나 능숙하게 다루는지 보여준다. 이 작품의 분석을 통해서 알 수 있는 것은 다음 세 가지이다. 첫째, 작품의 주제 면에서, 평화와 풍요의 원천인 왕권이야 말로 프랑스에 영향력을 행사하는 권력이라는 점, 둘째, 라 이르는 자신이 참고한 자료들의 규범에 제약받지 않고 자유롭게 활용할 수 있었다는 점, 셋째, 작품 주문자가 누구였는지 밝힐 수는 없으나 궁정의 인물이었을 것임을 추정할 수 있게 한다는 점이다.

L’Allégorie de la Régence d’Anne d’Autriche peinte en 1648 par Laurent de La Hyre (1606-1656), ou comment négocier picturalement le langage allégorique

Raul Sampaio Lopes 한국프랑스고전문학회 2012 프랑스고전문학연구 Vol.15 No.-

본고는 알레고리를 다룬 회화작품을 분석하기 위해 미술사에서 참고로 삼는 자료들을 소개하는 것을 목적으로 삼는다. 그 대상이 되는 작품으로 로랑 드 라 이르의 1648년 회화작품인 <안느 도트리슈의 섭정 알레고리>를 선정하였고, 이 작품의 분석에 필요한 자료로 세자레 리파의 저서, 화가들의 알레고리 사용에 대한 당대의 증언들을 참고자료로 삼았다. 로랑 드 라 이르의 이 작품은 1648년에 제작된 것으로 루브르미술관의 소장 작품임에도 현재는 베르사이유궁에 전시되어 있다. 작품의 출처에 대해서는 정확히 밝혀지지 않았으나 아마도 보다 더 규모가 큰 장식의 일부였을 것으로 추정된다. 로랑 드 라 이르(1606-1656)는 일반대중에게는 잘 알려지지 않은 프랑스 화가이지만 17세기 회화사에서 차지하는 중요성은 결코 간과할 수 없다. 제2세대 퐁텐블로 학파의 계승자인 라 이르는 자신의 방대한 예술적, 문학적, 학문적 소양에 힘입어 퐁텐블로 학파의 영향을 뛰어넘기에 이른다. 그렇게 해서 환한 색채의 회화, 정연한 회화를 고안해 내면서 인간과 자연에 대한 시(詩)에 자리를 내어준다. 본고에서 필자가 하나의 예시로 삼은 <안느 도트리슈의 섭정 알레고리>에서, 라 이르는 리파에 의해 코드화된 알레고리 규범들을 참고로 하면서 자기 작품 안에 그 요소들을 구성하며, 때로는 여러 가지 알레고리의 교차된 의미들을 중복시킴으로써 리파의 코드들을 자신이 얼마나 능숙하게 다루는지 보여준다. 이 작품의 분석을 통해서 알 수 있는 것은 다음 세 가지이다. 첫째, 작품의 주제 면에서, 평화와 풍요의 원천인 왕권이야말로 프랑스에 영향력을 행사하는 권력이라는 점, 둘째, 라 이르는 자신이 참고한 자료들의 규범에 제약받지 않고 자유롭게 활용할 수 있었다는 점, 셋째, 작품 주문자가 누구였는지 밝힐 수는 없으나 궁정의 인물이었을 것임을 추정할 수 있게 한다는 점이다.

Importance of Free-Throw Performance in Game Outcome During the Final Series of Basketball Play-offs

( Jaime Sampaio ),( Manuel Janeira ) 한국스포츠정책과학원(구 한국스포츠개발원) 2003 International Journal of Applied Sports Sciences Vol.15 No.2

This study was conducted to identify the contribution of free-throw performance to the game final outcome (winning or losing) in the final series of play-off games regarding three competition levels: superior (NBA league from USA), intermediate (ACB league from Spain) and inferior (LPB league from Portugal). The studied sample was 12 games from the 2000-2001 play-off final series of the NBA (5 games), ACB (3 games) and LPB (4 games). A two-way analysis of variance (ANOVA) with independent measures (outcome × league) was used to analyze the data. Results confirmed that winning teams scored a higher percentage of their points through free-throws; these differences became stronger in the last minute of the game. Average free-throw percentages ranged from 70% to 75% in the three leagues and the percentage of points scored by free throws ranged from 19% to 25%. Results seem to support the hypothesis that free-throw performance was a deciding factor in NBA`s third period and in ACB`s last minute of the game.

Mathematics Learning in an Informal Environment at a Portuguese Kindergaten

( Maia Joao Sampaio ),( Menino Conceicao ) 한국수학교육학회 2011 수학교육 학술지 Vol.2011 No.-

Instead of prepare specific activities for teach mathematical ideas, some kindergarten teachers prefer to promote mathematics knowledge in an informal environment, assuming this is the best way to develop children creativity. In this paper, we present activities where children learn mathematics in non-mathematical situations and use their knowledge to solve their problems in daily kindergarten life. In each situation, children must accomplish some tasks where they have to count and to write their counting. They show what they have learned and they show their creativity using their knowledge in different actions.

Carbohydrate-electrolyte drinks exhibit risks for human enamel surface loss

Mary Anne Sampaio de Melo,Vanara Florencio Passos,Juliana Paiva Marques Lima,Sergio Lima Santiago,Lidiany Karla Azevedo Rodrigues 대한치과보존학회 2016 Restorative Dentistry & Endodontics Vol.41 No.4

Objectives: The aim of this investigation was to give insights into the impact of carbohydrate-electrolyte drinks on the likely capacity of enamel surface dissolution and the influence of human saliva exposure as a biological protective factor. Materials and Methods: The pH, titratable acidity (TA) to pH 7.0, and buffer capacity (β) of common beverages ingested by patients under physical activity were analyzed. Then, we randomly distributed 50 specimens of human enamel into 5 groups. Processed and natural coconut water served as controls for testing three carbohydrate-electrolyte drinks. In all specimens, we measured surface microhardness (Knoop hardness numbers) and enamel loss (profilometry, μm) for baseline and after simulated intake cycling exposure model. We also prepared areas of specimens to be exposed to human saliva overnight prior to the simulated intake cycling exposure. The cycles were performed by alternated immersions in beverages and artificial saliva. ANOVA two-way and Tukey HDS tests were used. Results: The range of pH, TA, and β were 2.85 - 4.81, 8.33 - 46.66 mM/L and 3.48 - 10.25 mM/L × pH, respectively. The highest capacity of enamel surface dissolution was found for commercially available sports drinks for all variables. Single time human saliva exposure failed to significantly promote protective effect for the acidic attack of beverages. Conclusions: In this study, carbohydrate-electrolyte drinks usually consumed during endurance training may have a greater capacity of dissolution of enamel surface depending on their physicochemical proprieties associated with pH and titratable acidity.

예술비평에 감추어진 예술 : 18세기 예술비평에 의해 왜곡된 예술 형태들에 관한 고찰

( Raúl C. Sampaio Lopes ) 한국프랑스고전문학회 2022 프랑스고전문학연구 Vol.25 No.-

L’art que connaît le grand public ou même le public éclairé se réduit en général à celui que lui a rendu accessible le genre essentiellement littéraire de la critique d’art, qui ne se développe en Europe qu’à partir du dix-huitième siècle avec l’importance prise par les expositions publiques. Or celle-ci a développé une connivence avec la peinture et des réflexions théoriques menées sans souci excessif de la réalité de l’art en train de se faire autour d’elle qui ont considérablement biaisé notre image de l’art. Après avoir fait ce constat, l’article défend l’idée qu’il faut se défaire de ces préjugés pour regarder les arts d’avant le romantisme, notamment en France, et se rappeler qu’alors la décoration était une catégorie noble de la théorie architecturale et que les artistes qui s’y adonnaient étaient reconnus à leur juste mérite par leurs contemporains. Aujourd’hui, les études se développent et les éditeurs commencent à redonner de l’importance à ce qu’on appelle désormais l’art décoratif et en particulier à tous les arts du meuble, qui ont connu une floraison en France au XVIIIe siècle au moins aussi belle que celle de la peinture ou de la sculpture.

Nitrogen supply associated with rhizobacteria in the first productive cycle of Marandu grass

Fernando Antônio Rebouças Sampaio,Marcelo Carvalho Minhoto Teixeira Filho,Carlos Eduardo da Silva Oliveira,Arshad Jalal,Eduardo Henrique Marcandalli Boleta,Bruno Horschut de Lima,Poliana Aparecida Leo 한국작물학회 2021 Journal of crop science and biotechnology Vol.24 No.4

The rhizobacteria of genus Azospirillum and Bacillus are efective at fxing atmospheric nitrogen, promote plant growth and can largely contribute to benefcial recovery from degraded pastures. This study aimed to evaluate the development and nutritional status of Urochloa brizantha cv. Marandu in response to nitrogen doses along with inoculation of Azospirillum brasilense and Bacillus subtilis. The experiment was carried in a completely randomized design in a greenhouse with four replications and in factorial scheme 4×5. The treatments were consisted of seeds inoculation (without inoculation, A. brasilense (strains Ab-V5, Ab-V6), B. subtilis (strain CCTB04) and co-inoculation with strains of A. brasilense+strain of B. subtilis, and nitrogen doses (0, 50, 100, 150 and 200 kg ha−1, equivalent to 0, 25, 50, 75 and 100 mg dm−3 N) from urea. The sole inoculation of A. brasilense and B. subitilis promoted plant height of Marandu grass along with nitrogen fertilization. The co-inoculation of these bacteria increased potassium accumulation in Marandu grass along with nitrogen doses. Regardless of bacterial inoculation, number of tillers, leaves, dry matter accumulation, crude protein and accumulations of N, P, Ca, S and Mg were increased with increasing nitrogen doses in the frst forage cycle.

Carbohydrate-electrolyte drinks exhibit risks for human enamel surface loss

de Melo, Mary Anne Sampaio,Passos, Vanara Florencio,Lima, Juliana Paiva Marques,Santiago, Sergio Lima,Rodrigues, Lidiany Karla Azevedo The Korean Academy of Conservative Dentistry 2016 Restorative Dentistry & Endodontics Vol.41 No.4

Objectives: The aim of this investigation was to give insights into the impact of carbohydrate-electrolyte drinks on the likely capacity of enamel surface dissolution and the influence of human saliva exposure as a biological protective factor. Materials and Methods: The pH, titratable acidity (TA) to pH 7.0, and buffer capacity (${\beta}$) of common beverages ingested by patients under physical activity were analyzed. Then, we randomly distributed 50 specimens of human enamel into 5 groups. Processed and natural coconut water served as controls for testing three carbohydrate-electrolyte drinks. In all specimens, we measured surface microhardness (Knoop hardness numbers) and enamel loss (profilometry, ${\mu}m$) for baseline and after simulated intake cycling exposure model. We also prepared areas of specimens to be exposed to human saliva overnight prior to the simulated intake cycling exposure. The cycles were performed by alternated immersions in beverages and artificial saliva. ANOVA two-way and Tukey HDS tests were used. Results: The range of pH, TA, and ${\beta}$ were 2.85 - 4.81, 8.33 - 46.66 mM/L and 3.48 - $10.25mM/L{\times}pH$, respectively. The highest capacity of enamel surface dissolution was found for commercially available sports drinks for all variables. Single time human saliva exposure failed to significantly promote protective effect for the acidic attack of beverages. Conclusions: In this study, carbohydrate-electrolyte drinks usually consumed during endurance training may have a greater capacity of dissolution of enamel surface depending on their physicochemical proprieties associated with pH and titratable acidity.