An Overview of Management Control Theory

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Communication: Transient Anion States Of Phenol…(h₂o)n (n = 1, 2) Complexes: Search For Microsolvation Signatures.

We report on the shape resonance spectra of phenol-water clusters, as obtained from elastic electron scattering calculations. Our results, along with virtual orbital analysis, indicate that the well-known indirect mechanism for hydrogen elimination in the gas phase is significantly impacted on by microsolvation, due to the competition between vibronic couplings on the solute and solvent molecules. This fact suggests how relevant the solvation effects could be for the electron-driven damage of biomolecules and the biomass delignification [E. M. de Oliveira et al., Phys. Rev. A 86, 020701(R) (2012)]. We also discuss microsolvation signatures in the differential cross sections that could help to identify the solvated complexes and access the composition of gaseous admixtures of these species.14105110

Óxidos de ferro e suas aplicações em processos catalíticos: uma revisão

A review of most of the reported studies on the use of iron oxides as catalyst in specific processes, namely Haber-Bosch reaction, Fischer-Tropsch synthesis, Fenton oxidation and photolytic molecular splitting of water to produce gaseous hydrogen, was carried out. An essential overview is thus presented, intending to address the fundamental meaning, as well as the corresponding chemical mechanisms, and perspectives on new technological potentialities of natural and synthetic iron oxides, more specifically hematite (α-Fe2O3), goethite (α-FeOOH), magnetite (Fe3O4) and maghemite (γ-Fe2O3), in heterogeneous catalysis

Transport of fertilzed eggs : influence of breeder age, storage period and road

Propôs-se, com esta pesquisa, avaliar a influência de diferentes idades das matrizes e tempos de estocagem no número de ovos trincados durante a operação de transporte em diferentes estradas. A pesquisa foi conduzida na empresa integradora avícola em Mogi-Mirim - SP, por meio do acompanhamento de três carregamentos em diferentes estações do ano (primavera, verão e outono). Foi utilizado um caminhão climatizado do tipo baú com capacidade para 592 caixas de ovos. Foram registrados, por meio de quatro acelerômetros, os níveis de vibração (m s-2) e choques em percursos realizados nas estradas de terra e asfalto. O número de ovos trincados foi obtido por meio da contabilização de 18 caixas de ovos transportadas que apresentavam três idades de matrizes e três tempos de estocagem, pelo método visual. Foi utilizado o delineamento experimental inteiramente aleatorizado com esquema fatorial 3 x 3. Conclui-se que as matrizes velhas e intermediárias apresentaram o maior número de ovos trincados; os maiores níveis de vibração e choques da carga ocorreram no sentido horizontal enquanto a estrada de asfalto ofereceu as piores condições para o transporte de ovos.The aim of this study was to assess the influence of age of breeder hens and storage periods on number of cracked eggs during transportation on different types of roads. The study was conducted in a poultry farm located in Mogi-Mirim, State of São Paulo, Brazil, through tracking of three loads in different seasons of the year (spring, summer and autumn). An environmentally controlled truck was used, with total capacity of 592 egg boxes. Vibration levels (m s-2) and shocks during asphalt and land track were registered by accelerometers (n = 4). The number of cracked eggs was obtained through visual accounting of 18 egg boxes, which showed three breeder ages and three storage periods. A completely randomized experimental design was adopted, with a 3 x 3 factorial design. It is concluded that old and intermediate broiler breeders showed a higher number of cracked eggs. The higher vibration levels and load shocks were observed towards horizontally. The asphalt road offered harsh conditions for egg transportation

Levels of vibration and shock on different roads during transportation of fertile eggs

Os níveis de vibração e choques podem, devido ao transporte, afetar a qualidade dos ovos férteis. O objetivo desta pesquisa foi caracterizar e avaliar a influência das estradas sobre os níveis de vibração e choques no transporte dos ovos férteis. A pesquisa foi conduzida na empresa integradora avícola no estado de São Paulo, por meio do acompanhamento de três carregamentos em diferentes estações do ano (primavera, verão e outono). Um caminhão climatizado do tipo baú foi utilizado, com capacidade para 592 caixas de ovos, totalizando em média 90.840 ovos. As avaliações dos níveis de vibração (m s-2) e choques nas estradas de terra e asfalto foram registradas por meio de quatro acelerômetros da marca Hobo. Para o nível de vibração o delineamento utilizado foi inteiramente aleatorizado com esquema fatorial 3 x 2 x 4. Para o número de choques o delineamento utilizado foi inteiramente aleatorizado com esquema fatorial 3 x 2. Os piores níveis de vibração e choques da carga ocorreram no sentido vertical. A estrada de asfalto ofereceu as piores condições para o transporte de ovos. As perdas no transporte ultrapassaram 1% e são atribuídas às trincas e quebra dos ovos.The levels of vibration and shock due to transport can affect the quality of fertile eggs. The aim of this study was to characterize and to evaluate the influence of roads on the levels of vibration and shock in the transport of fertile eggs. The survey was conducted in the poultry integrator company in the State of São Paulo, by tracking shipments in three different seasons (spring, summer and autumn). An air-conditioned trunk was used, with a capacity of 592 boxes of eggs, totaling an average of 90,840 eggs. The evaluation of vibration levels (m s-2) and shocks on unpaved and asphalt roads were recorded by four accelerometers brand Hobo. For the vibration level, the experimental design was completely randomized in a 3 x 2 x 4 factorial. For the number of shocks the experimental design was completely randomized with a factorial 3 x 2. The worst levels of vibration and shock load occurred in the vertical direction. The asphalt road provided the worst conditions for the transport of eggs. The transport losses exceeded 1%, which are attributed to cracks and breakage of eggs

Magnesium and manganese induced changes on chemical, nutritional, antioxidant and antimicrobial properties of the pansy and Viola edible flowers

composition was determined using standard methods. Free sugars, fatty acids, organic acids, tocopherols, and phenolic compounds were analyzed using various HPLC and GC devises. The extract’s antimicrobial, antioxidant, cytotoxicity, and anti-inflammatory activity were assessed. The results indicated that Mg enrichment negatively affected plant growth and mineral accumulation but improved photosynthetic performance. The edible flowers contained significant amounts of protein, low levels of fat, and varying sugar contents, such as glucose and fructose. Various fatty acids and phenolic compounds were identified, with different concentrations depending on the treatment. The flowers exhibited antioxidant potential, antimicrobial activity, cytotoxic effects, and antiinflammatory properties. The correlations between the investigated parameters not only expand knowledge on Mg and Mn interaction but also catalyze significant advancements in sustainable agriculture and food health, fostering a healthier and more conscious future.The authors are grateful to the Foundation for Science and Technology (FCT, Portugal) for financial support through national funds FCT/MCTES (PIDDAC) to CIMO (UIDB/00690/2020 and UIDP/00690/ 2020) and SusTEC (LA/P/0007/2020). L. Barros, Ricardo C. Calhelha, S. A. Heleno and T. C. Finimundy thank the national funding by FCT through the institutional scientific employment program-contract for her contract, while M. Carocho thanks FCT through the individual scientific employment program-contract (CEECIND/00831/2018). I. Oliveira thanks FCT for her PhD grant (BD/06017/2020).info:eu-repo/semantics/publishedVersio

Structural and paragenetic analysis of swarms of bubble like pegmatites in a miarolitic granite from Assunção South – Viseu – Central Portugal

Publicado em "PEG 2013 : Contributions to The 6th International Symposium on Granitic Pegmatites

Human papillomavirus in oral squamous cells carcinoma in a population of 75 Brazilian patients

Purpose In the present study, we investigated the presence of human papillomavirus (HPV) DNA and viral types in 75 cases of oral squamous cells carcinoma from Brazil to obtain data that would contribute to a better understanding of the role of HPV in the pathogenesis of this tumor. Materials and methods DNA was extracted from paraffin-embedded tissue and amplified by polymerase chain reaction using a pair of primers designated PCO3+ and PCO4+ for the detection of a fragment of the human β-globin gene, followed by polymerase chain reaction for the detection of HPV DNA using a pair of generic primers, GP5+ and GP6+. Viral typing was performed by dot blot hybridization. Results Human papillomavirus DNA was detected in 18 (24%) of the 75 cases positive for the human β-globin gene. No significant association was observed between HPV and age, sex, or anatomical location of the tumor. The most prevalent viral type was HPV-18 (77,8%). Conclusion The low frequency of detection of HPV DNA in oral epidermoid carcinomas suggests a possible participation of the virus in the development and progression of only a subgroup of these tumors

Controle, exigências, apoio social no trabalho e efeitos na saúde de trabalhadores adolescentes

OBJETIVO: Avaliar as dimensões físicas e psicológicas do trabalho de adolescentes (demanda de trabalho, controle no trabalho e apoio social e ambiental), relacionando-os a relatos de: dores no corpo, acidentes de trabalho, duração de sono e duração diária da jornada de trabalho. MÉTODOS: Participaram do estudo 354 estudantes do período noturno de escola pública no Município de São Paulo, entre abril e maio de 2001. Esses, responderam a questionário sobre condições de vida, trabalho (escalas Karasek de controle no trabalho) e estado de saúde. Foram feitas análises de regressão logística múltipla a fim de determinar a relação entre variáveis. RESULTADOS: As exigências psicológicas mostraram-se associadas aos relatos de dores no corpo (OR=3,3), maiores riscos de ocorrência de acidentes de trabalho (OR=3,0) e redução da duração do sono durante os dias de semana (segunda a quinta-feira) (pOBJECTIVE: To evaluate physical and psychological dimensions of adolescent labor (such as job demands, job control, and social support in the work environment), and their relation to reported body pain, work injuries, sleep duration and daily working hours. METHODS: A total of 354 adolescents attending evening classes at a public school in São Paulo, Brazil, answered questionnaires regarding their living and working conditions (Karasek's Job Content Questionnaire, 1998), and their health status. Data collection took place in April and May 2001. Multiple logistic regression analysis was used to determine relations among variables. RESULTS: Psychological job demands were related to body pain (OR=3.3), higher risk of work injuries (OR=3.0) and reduced sleep duration in weekdays (Monday to Thursday) (

Revisiting the male-produced aggregation pheromone of the lesser mealworm, Alphitobius diaperinus (Coleoptera, Tenebrionidae): identification of a six-component pheromone from a Brazilian population

The lesser mealworm, Alphitobius diaperinus Panzer 1797 (Coleoptera: Tenebrionidae), is a cosmopolitan insect pest affecting poultry production. Due to its cryptic behavior, insecticide control is usually not efficient. Thus, sustainable and effective methods would have an enormous and positive impact in poultry production. The aim of this study was to confirm the identity of the male-produced aggregation pheromone for a Brazilian population of A. diaperinus and to evaluate its biological activity in behavioral assays. Six male-specific compounds were identified: (R)-limonene (1), (E)-ocimene (2), 2-nonanone (3), (S)-linalool (4), (R)-daucene (5), all described before in an American population, and a sixth component, (E,E)-α-farnesene (6), which is apparently exclusive to a Brazilian population. Y-Tube bioassays confirmed the presence of a male-produced aggregation pheromone and showed that all components need to be present in a similar ratio and concentration as emitted by male A. diaperinus to produce a positive chemotactic response