1,989 research outputs found
Lateralidade e desempenho no teste de reflexo cognitivo: um estudo de economia comportamental
TCC (graduação) - Universidade Federal de Santa Catarina. Centro Sócio-Econômico. Economia.Utilizando questionários, o presente estudo verifica como gênero e lateralidade dos participantes estão relacionados a seu reflexo cognitivo. Em conformidade com estudos prévios, encontramos que o desempenho no teste do reflexo cognitivo depende do gênero do participante. Também descobrimos que o desempenho no teste não depende da característica do participante de ser destro ou canhoto, como se poderia em princípio pensar o contrári
Experimental and Numerical Investigation of Post-Flutter Limit Cycle Oscillations on a Cantilevered Flat Plate
Futuristic aircraft designs and novel aircraft such as High Altitude Long Endurance (HALE) involve a higher level of structural flexibility than in conventional aircraft. Even at present, the trends in the aviation industry are to increase wing length (to reduce induced drag) and maxi- mize use of composites, which lead to increased structural flexibility. This necessitates a rethink of conventional (linear) aeroelastic analysis, since the increased flexibility results in coupling between the flight dynamic and aeroelastic dynamics, and consequently, limit-cycle oscillations of the structure. In this paper, a new three-dimensional low-order model for unsteady aerody- namics that accounts for large oscillation amplitudes and nonplanar wakes is developed. An experiment with a cantilevered flat plate at low Reynolds number is set up and used to validate the low-order model, as well as to study post-flutter limit-cycle oscillations. Results from the low-order model are promising, but show that aerodynamic nonlinearities such as flow sepa- ration and leading-edge vortex shedding must also be modeled in order to predict all possible limit-cycle oscillations of the aeroelastic system
Avaliação de inseticidas via tratamento de sementes de soja para o controle de pragas iniciais.
O uso da tecnologia da informação por acadêmicos do Curso de Administração do CECIESA/UNIVALI – Itajaí.
O atual panorama educacional e econômico vem sendo moldado por duas poderosas forças, tecnologia e informação. A sucessora da sociedade industrial – a sociedade de informação – penetrará e moldará quase todos os aspectos da vida diária. A revolução digital alterou, de maneira fundamental, nossos conceitos de espaço, tempo e massa. Mensagens podem ser enviadas e recebidas simultaneamente. Tais expressões digitais exigem da sociedade não apenas infra-estrutura material, mas também uma evolução nos padrões de aprendizagem - ensino e conceitos humanos. Nesse sentido, as universidades representam um modelo ímpar de gestão e disseminação de conhecimentos, uma vez que utilizam a informação como um fator estratégico, o homem como agente receptor e gerador de idéias e a tecnologia para valorização do trabalho.Foi aplicada uma pesquisa tipo estudo de caso explicativo sobre a tecnologia de informação utilizada no ambiente universitário, especificamente no Curso de Administração do CECIESA/UNIVALI, por meio de um questionário e posterior análise qualitativa e descritiva, torna-se um poderoso instrumento capaz de diagnosticar e propor significativas melhorias no processo ensino e aprendizagem. No caso estudado, concluiu-se que o uso dos recursos da TI está cada vez mais comum no meio acadêmico, sendo que os softwares tipo Word/Excel são os mais usados pelos alunos bem como o E-mail é a ferramenta preferida pelos acadêmicos para comunicação com seus colegas
Synthesis of Nanofiltration Membrane Developed from Triethanolamine (TEOA) and Trimesoyl Chloride (TMC) for Separation of Xylose from Glucose
Synthesis of thin film composite (TFC) nanofilt
ration (NF) membrane has experienced tremendous
development since the concept of interfacial polymerisation (IP) was first introduced. One of its new application is on the separation of xylose from glucos
e in biomass hydrolysate. In this present study, NF TFC
membrane has been produced through interfacial poly
merisation by manipulation the concentration of
triethanolamine (TEOA) at 35 min reaction time with 0.
15 % w/v of trimesoyl chloride (TMC). The membrane
was then characterised in term of their chemical and physical properties, and separation performance
between xylose and glucose. The growth of thin layer f
ilm depends on concentration of TEOA as the monomer
and reaction time. As concentration of TEOA and re
action time increased, the layer of the TFC becomes
thicker thus decreases the permeability of the membrane. Contradicted to this study, the lowest and the highest permeability were recorded at 4 % w/v of TEOA and 8 % w/v of TEOA at reaction time of 35-min in TMC. The TFC membrane prepared with 4 % w/v TEOA has high in permeate flux, resultant in high xylose separation of 1.3. Low permeate flux but moderate xylose separation factor of 0.93 was obtained for the TFC membrane prepared with 8 % w/v TEOA
Hubungan antara Keterampilan Sosial dan Kecanduan Situs Jejaring Sosial pada Masa Dewasa Awal
Hadirnya situs jejaring sosial semakin mempermudah penggunanya untuk berkomunikasi secara virtual. Kemudahan yang diberikan melalui situs jejaring sosial disadari dapat memenuhi kebutuhan akan kehidupan sosial individu. Namun akan menjadi masalah apabila penggunaan situs jejaring sosial dilakukan secara terus-menerus dan berlebihan hingga berdampak negatif pada kehidupan individu, seperti kecanduan situs jejaring sosial. Salah satu hal yang diduga menyebabkan individu dewasa awal mengalami kecanduan situs jejaring sosial adalah keterampilan sosial yang rendah. Situs jejaring sosial, secara tidak langsung dapat menjadi sarana bagi individu yang memiliki keterampilan sosial yang rendah dan mengalami kesulitan dalam menjalin hubungan sosial secara face to face menjadi beralih ke dunia maya. Tujuan penelitian ini adalah untuk meneliti adanya hubungan antara keterampilan sosial dan kecanduan jejaring sosial pada masa dewasa awal. Metode yang digunakan yaitu metode kuantitatif. Sampel penelitian ini berjumlah 200 orang. Pengambilan sampel terhadap subjek penelitian menggunakan metode non random sampling. Berdasarkan analisa data yang dilakukan dengan menggunakan teknik korelasi Spearman (1-tailed) diketahui nilai koefisien korelasi sebesar r = -0,167 dengan nilai signifikansi sebesar 0.009 (p<0.05). Hasil tersebut menunjukkan bahwa hipotesis diterima, yang artinya adanya hubungan antara keterampilan sosial dan kecanduan jejaring sosial pada masa dewasa awal dengan arah hubungan negatif, dimana semakin tinggi keterampilan sosial yang dimiliki seseorang maka semakin rendah kecanduan situs jejaring sosial, dan sebaliknya apabila semakin rendah keterampilan sosial yang dimiliki seseorang maka semakin tinggi kecanduan situs jejaring sosial
UNIVERSIDADES EMPREENDEDORAS: PANORAMA DOS ESTUDOS BRASILEIROS SOBRE O TEMA
Este trabalho tem como objetivo conhecer a evolução dos estudos nacionais sobre as universidades empreendedoras, como uma forma de identificar lacunas e oportunidades de pesquisa. O procedimento metodológico empregado foi a revisão sistemática da literatura. A revisão sistemática foi realizada no banco de dados SCIELO, entre os anos de 1990 a 2012. Dentre os resultados obtidos, verificou-se que o a temática que envolve as universidades empreendedoras manifesta-se como um campo profícuo de estudos, e que há uma ascendência exponencial de estudos voltados para o tema. O presente estudo mostrou ainda que há lacunas e oportunidades de pesquisa a serem aprofundadas. Nesse sentido, conclui-se que a discussão da consolidação do papel e importância das universidades empreendedoras vem ganhando espaço nos estudos nacionais, em virtude do amadurecimento desse campo de estudo permitir uma releitura do conceito tradicional de educação superior
Pengaruh saluran distribusi, keunggulan produk, dan persediaan produk, melalui keputusan pembelian pada PT. Tasya Gasindo Medan
Natural gas is used by the public because it is more efficient and cheaper than others. but the 3 kg gas cylinder often leaks, the weight of the gas cylinder is not as expected, then the 3kg gas cylinder is often empty of stock. this study aims to determine the effect of distribution channels, product advantages, and product supplies through purchasing decisions. This type of research uses descriptive research. The research aims to determine the effect of distribution channels, product advantages, and product supplies through purchasing decisions. The population in the company as many as 70 and taken 30 populations from similar companies so that the population amounted to 100, the number of samples studied in this study were 100 samples. The study used multiple linear analysis shows distribution channels, product advantages, and product suppliesseffect spositive sand ssignificant sto purchasing sdecisions. The t-test of the distribution channel obtained tcount < ttable the sig value Fcount> Ftable means that the distribution channel has no effect and is not significant towards purchasing decisions, product excellence is obtained tcount > ttable then the sig value Fcount<Ftable means that product excellence has a significant effect on purchasing decisions, and value product inventory obtained tcount> ttable then the sig value Fcount < Ftable means that product inventory has a significant effect on purchasing decisions.
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Adenosine kinase inhibition selectively promotes rodent and porcine islet β-cell replication
Diabetes is a pathological condition characterized by relative insulin deficiency, persistent hyperglycemia, and, consequently, diffuse micro- and macrovascular disease. One therapeutic strategy is to amplify insulin-secretion capacity by increasing the number of the insulin-producing β cells without triggering a generalized proliferative response. Here, we present the development of a small-molecule screening platform for the identification of molecules that increase β-cell replication. Using this platform, we identify a class of compounds [adenosine kinase inhibitors (ADK-Is)] that promote replication of primary β cells in three species (mouse, rat, and pig). Furthermore, the replication effect of ADK-Is is cell type-selective: treatment of islet cell cultures with ADK-Is increases replication of β cells but not that of α cells, PP cells, or fibroblasts. Short-term in vivo treatment with an ADK-I also increases β-cell replication but not exocrine cell or hepatocyte replication. Therefore, we propose ADK inhibition as a strategy for the treatment of diabetes.Stem Cell and Regenerative Biolog
Relationship Between Personal Protective Equipment Use and Contact Dermatitis in Palm Oil Pesticide Workers
Contact dermatitis is the most common occupation-related dermatological disease. Skin contact with chemicals that are irritants or allergens continuously cause vulnerability in workers. Among the chemicals that can cause contact dermatitis are pesticides, which are often used in the community, particularly by palm oil plantation companies. The use of personal protective equipment (PPE) is one risk control for contact dermatitis. This study aimed to determine the relationship between PPE usage and contact dermatitis among palm oil plantation workers who dispense pesticides. Using a cross-sectional research design and a total sampling technique, the study analysed data on contact dermatitis obtained from workers’ medical records and PPE usage through random observations for three days. The results showed that 62.2% of pesticide workers had experienced contact dermatitis within the past three months, and there was a significant relationship between insufficient PPE usage and contact dermatitis (p-value < 0.001). Therefore, the occurrence of contact dermatitis can be reduced by increasing PPE usage.
Keywords: contact dermatitis, pesticide, personal protective equipment, palm oi
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