ChemInform Abstract: Synthesis Based on Cyclohexadienes. Part 16. Synthesis of Methyl 2,7-Dimethyltricyclo (5.2.2.01,5)undec-5-ene-6-carboxylates

Synthesis of methyl 2, 7-dimethyltricyclo{5.2.2.0(1,5}undec-5-en-6-carboxylates, the tricyclic skeleton present in (+)-allo-cedrol (1) is described using the Diels-Alder strategy. Thus, Birch reduction of the aromatic acid 8 gives 5, the methyl ester of which is isomerised with DBU to a 1:1 mixture of the dienes 6 and 4. Cycloaddition of this mixture with 2-chloroacrylonitrile followed by hydrolysis yields the ketone 60 having the tricyclo{5.2.2.0(1.5)}undec-5-ene framework. Similar reaction with methyl vinyl ketone affords the regioisomeric adducts 61 and 62.

Mossbauer study of La1-xCaxMn1-y (57)FeyO(3) with x = 0, 0.25; y=0.01

Temperature dependent Mossbauer measurements are done on the samples of La1- xCaxMn1-y (FeyO3)-Fe-57 with x=0 and 0.25, and y=0.01. With decreasing temperature, the specimen with x=0.25 shows a paramagnetic to ferromagnetic transition around 175 K. In the specimen x=0.0, the temperature dependence of both the center shift (delta) and the recoilless fraction (f) can be fitted very well with the Debye theory with a theta(D)=320+/-50 K. But for the specimens with x=0.25, f and delta show distinct deviations from the Debye behavior in the temperature range in which the resistivity shows a sharp decrease. Dips observed in both the f and delta around the transition temperature suggest that the Jahn-Teller distortion observed in these systems is dynamic in nature.

Study of pulsed laser ablated CaBi2Ta2O9 thin films

Polycrystalline CaBi2Ta2O9 thin films were grown on Pt/TiO2/SiO2/Si (100) substrates using a pulsed laser deposition technique. The influence of substrate temperature and oxygen pressure on crystallization and orientation of the films was studied. In-situ films deposited under a combination of higher substrate temperature and lower oxygen pressure exhibited a preferred c-axis orientation. Micro-Raman spectroscopy was used for complete understanding of phase evolution of CBT films. Thin films deposited at higher substrate temperatures showed larger grain size and higher surface roughness, observed by atomic force microscopy. The values of maximum polarization (2Pmnot, vert, similar13.4 μC/cm2), remanent polarization (2Prnot, vert, similar4.6 μC/cm2) and the coercive field Ec was about 112 kV/cm obtained for the film deposited at 650°C and annealed at 750°C. The room temperature, dielectric data revealed a dependence on the grain size.

Activation of Lattice Oxygen of TiO2 by Pd2+ Ion: Correlation of Low-Temperature CO and Hydrocarbon Oxidation with Structure of Ti1-xPdxO2-x (x=0.01-0.03)

Lattice oxygen of TiO2 is activated by the substitution of Pd ion in its lattice. Ti1-xPdxO2-x (x = 0.01-0.03) have been synthesized by solution combustion method crystallizing in anatase TiO2 structure. Pd is in +2 oxidation state and Ti is in +4 oxidation state in the catalyst. Pd is more ionic in TiO2 lattice compared to Pd in PdO. Oxygen storage capacity defined by ``amount of oxygen that is used reversibly to oxidize CO'' is as high as 5100 mu mol/g of Ti0.97Pd0.03O1.97. Oxygen is extracted by CO to CO2 in absence of feed oxygen even at room temperature which is more than 20 times compared to pure TiO2. Rate of CO oxidation is 2.75 mu mol g(-1) s(-1) at 60 degrees C over Ti0.97Pd0.03O1.97 and C2H2 gets oxidized to CO2 and H2O at room temperature. Catalyst is not poisoned on long time operation of the reactor. Such high catalytic activity is due to activated lattice oxygen created by the substitution of Pd ion as seen from first-principles density functional theory (DFT) calculations with 96 atom supercells of Ti32O64, Ti31Pd1O63, Ti30Pd2O62, and Ti29Pd3O61. The compounds crystallize in anatase TiO2 structure with Pd2+ ion in nearly square planar geometry and TiO6 octahedra are distorted by the creation of weakly bound oxygens. Structural analysis of Ti31Pd1O63 which is close to 3% Pd ion substituted TiO2 shows that oxygens associated with both Ti and Pd ions in the lattice show bond valence sum of 1.87, a low value characteristic of weak oxygen in the lattice compared to oxygens with valence 2 and above in the same lattice. Exact positions of activated oxygens have been identified in the lattice from DFT calculations.

Memory effect in SrRu(1-x)O3 (0.01 < x < 0.07)

SrRuO3 is widely known to be an itinerant ferromagnet with a T-C similar to 160 K. It is well known that glassy materials exhibit time dependent phenomena such as memory effect due to their generic slow dynamics. However, for the first time, we have observed memory effect in SrRu(1-x)O3 (0.01

Aza-induced cardiomyocyte differentiation of P19 EC-cells by epigenetic co-regulation and ERK signaling

Stem cells in cell based therapy for cardiac injury is being potentially considered. However, genetic regulatory networks involved in cardiac differentiation are not clearly understood. Among stem cell differentiation models, mouse P19 embryonic carcinoma (EC) cells, are employed for studying (epi)genetic regulation of cardiomyocyte differentiation. Here, we comprehensively assessed cardiogenic differentiation potential of 5-azacytidine (Aza) on P19 EC-cells, associated gene expression profiles and the changes in DNA methylation, histone acetylation and activated-ERK signaling status during differentiation. Initial exposure of Aza to cultured EC-cells leads to an efficient (55%) differentiation to cardiomyocyte-rich embryoid bodies with a threefold (16.8%) increase in the cTnI(+) cardiomyocytes. Expression levels of cardiac-specific gene markers i.e., Isl-1, BMP-2, GATA-4, and alpha-MHC were up-regulated following Aza induction, accompanied by differential changes in their methylation status particularly that of BMP-2 and alpha-MHC. Additionally, increases in the levels of acetylated-H3 and pERK were observed during Aza-induced cardiac differentiation. These studies demonstrate that Aza is a potent cardiac inducer when treated during the initial phase of differentiation of mouse P19 EC-cells and its effect is brought about epigenetically and co-ordinatedly by hypo-methylation and histone acetylation-mediated hyper-expression of cardiogenesis-associated genes and involving activation of ERK signaling.

Dielectric relaxation and anti-ferromagnetic coupling of BiEu03 and BiGd03

BiEuO3 (BE) and BiGdO3 (BG) are synthesized by the solid-state reaction technique. Rietveld refinement of the X-ray diffraction data shows that the samples are crystallized in cubic phase at room temperature having Fm3m symmetry with the lattice parameters of 5.4925(2) and 5.4712(2) A for BE and BG, respectively. Raman spectra of the samples are investigated to obtain the phonon modes of the samples. The dielectric properties of the samples are investigated in the frequency range from 42 Hz to 1.1 MHz and in the temperature range from 303 K to 673 K. An analysis of the real and imaginary parts of impedance is performed assuming a distribution of relaxation times as confirmed by the Cole-Cole plots. The frequency-dependent maxima in the loss tangent are found to obey an Arrhenius law with activation energy similar to 1 eV for both the samples. The frequency-dependent electrical data are also analyzed in the framework of conductivity formalism. Magnetization of the samples are measured under the field cooled (EC) and zero field cooled (ZFC) modes in the temperature range from 5 K to 300 K applying a magnetic Field of 500 Oe. The FC and ZFC susceptibilities show that BE is a Van Vleck paramagnetic material with antiferromagnetic coupling at low temperature whereas BG is an anti-ferromagnetic system. The results are substantiated by the M-11 loops of the materials taken at 5 K in the ZFC mode. (C) 2014 Elsevier B.V. All rights reserved

Evaluación de dosis del herbicida Pyribenxozim (Pyanchor 5 ec) aplicados en post emergencia temprana, para el control de arvenses en época seca en el cultivo de arroz (Oryza sativa L) Timal, Tipitapa, 2006

El presente estudio se realizó en febr ero del año 2006, en Tipi tapa, municipio del departamento de Managua, Km 26 carretera norte. En la zona arrocera el Timal, finca del pivote 34, del señor Freddy González, con el objetivo de ev aluar la eficiencia de tres dosis del herbicida Pyribenxozim (pyanc hor 5 EC) aplicado en post emergencia temprana para el control de arvenses en el cultivo de arroz (Oryza sativa L), de riego en época seca. El experimento se estableció en un lote comercial, en un Diseño de Bloque Completo al Azar (BCA), con cinco tratamientos y cuatro repeticiones. Las variables evaluadas en este estudio fueron: composición florística, cobertura, Efectividad del herbicida sobre las arvenses selectividad (Fitotoxicidad) y rendimiento. Las dosis del producto evaluado en el ensayo fueron: T1- (Pyribenxozim 5 EC 0.8 l/ha), T2 - (Pyribenxozim 5 EC 1.0 l/ha), T3 - (Pyribenxozim 5 EC 1.2 l/ha), T4 - (Testigo comercial Bispiribac Sodico (Nominee) 40 SC 1.0 l/ha) (muy utilizado en la zona) y T5 - (Testigo absoluto). En los resultados, se identificaron las arvenses que predominaban en el cultivo, las principales familias predominantes fueron las Poaceae. Los mayores porcentajes de c obertura se encontraron en T1- (Pyribenxozim 5 EC 0.8 l/ha) y el T5 - (Testigo absoluto). Los tres tratamientos evaluados de pyanchor 5 EC controlaron eficientemente las principales arvenses presentes. Sin embargo el mejor resultado sobre el detrimento de las arvenses fue la dosis de 1.2 l/ ha de Pyanchor 5 EC en la que se encontró un 97 % de control. En cuanto a la efectividad sobre el tipo de especies, se observó, que ninguna de las dosis estudiadas logro afectar a las especies Leptochloa filiformis L y Eclipta alba L mismo efecto se observó en el tratamiento en el que se uso el producto comercial Bispir ibac Sodico (Nominee) 40 SC 1.0 l/ha. El herbicida Pyribenxozim (pyanchor 5 EC), es un producto selectivo con respecto al cultivo de arroz. Según esto s resultados, en el rendimien to del cultivo ninguno de los tratamientos afecto su calidad y cantidad según características de la variedad. En cuanto a la probación y registro del producto por el MAG FOR, basado en los resultados obtenidos este actualmente fue aceptado y esta siendo aplicado por los productores de arroz.

Assessing the road-damaging potential of heavy vehicles

The relative influence of various heavy vehicle design features on road-damaging potential is discussed. Testing procedures that could be used to measure the road-damaging potential of heavy vehicles are examined. A validated vehicle simulation is used to examine some of the characteristics of dynamic tyre forces generated by typical leaf sprung and air sprung articulated heavy vehicles for typical highway conditions. The proposed EC suspension test is simulated and the results compared with dynamic tyre forces generated under highway conditions. It is concluded that the road-damaging potential of a vehicle cannot be assessed by the simplistic parametric measurement of the proposed EC test. It is questionable whether a vehicle that passes the test will be any more 'road friendly' than one that fails.

Calidad bromatológica del ensilaje de hoja de plátano (Musàcea: variedad FHIA-01) con dos niveles de inclusión de levadura de torula (Candida utilis) más melaza

El presente estudio se realizó con el objetivo de determinar la calidad bromatológica (materia seca MS, proteína bruta PB, fibra neutro detergente FND), ácidos grasos volátiles AGV (ácido láctico, ácido acético, acido butírico) y pH del ensilaje de hoja de plátano (Musácea; variedad, FHIA-01), con dos niveles de inclusión de levadura de Torula (Candida utilis). El muestreo se realizó en la granja porcina y en los laboratorios de bromatología y microbiología de la Facultad de Ciencia Animal de la UNA. Los micro silos fueron conservados por 30 días. Los tratamientos evaluados fueron dos niveles de inclusión de levadura de Torula (Candida utilis al 0.5 y 1%). Los tratamientos se distribuyeron en un diseño completamente al azar (DCA) con tres repeticiones. El tratamiento uno (T1) consistió en hoja de plátano; el tratamiento dos (T2) en hoja de platano+melaza+0.5%levadura de Torula y el tratamiento tres (T3) en hoja de platano+melaza+1% levadura de Torula. Los resultados de la calidad bromatológica para MS por tratamiento fueron para T3:17.68%, T2: 17.22% y para T1: 16.46%. La PB alcanzó valores de: 14.08%, 13.50%, 13.12% para T3, T1 y T2, respectivamente. La FND presentó valores por tratamiento de T1: 67.80%, T3: 61.32% y T2: 56.39. Para los AGV, los resultados fueron para ácido láctico: T2 con 1.25%, T3 con 1.19% y T1 con 0.74%; para ácido acético T1 con 2.46%, T2 con 1.44% y T3 con 1.40; para ácido butírico no hubo presencia en ninguno de los tratamientos. Los resultados para el pH fueron para T1: 6.75%, para T3: 4.17% y para T2: 4.07. Con base en estos resultados, el T3 presentó mejor resultado en la calidad bromatológica y pH, superando al resto de los tratamientos, aunque obtuvo mejor resultado el T2 para el caso del ácido láctico. El uso de levaduras y melaza en el ensilaje mejora su calidad bromatológica.

Implicações da não aprovação da lei complementar, a que se refere o § 3º do art. 198 da Constituição Federal (EC Nº 29/2000), nos gastos federais com saúde

Nome do autor na folha de rosto: Sidney A. Bittencourt.

Alguns comentários sobre alterações da lei nº 10.267/01

Consultoria Legislativa - Área VI - Direito Agrário e Política Fundiária.

Alteração do art. 2.031 do Código civil pela Medida provisória n. 234, de 11.01.2005

Consultoria Legislativa - Área II - Direito Civil e Processual Civil, Direito Penal e Processual Penal, de Família, do Autor, de Sucessões, Internacional Privado.

Sobre as alterações no crédito imobiliário e outras referentes à política habitacional contidas na MP 2.212 de 30/8/01 e nas MPs 2.221 e 2.223 de 4/9/01

Consultoria Legislativa - Área VII - Finanças, Direito Comercial, Direito Econômico, Defesa do Consumidor - Área XI - Meio Ambiente, Geografia, Urbanismo, Arquitetura.

[Discurso do Deputado Daso Coimbra : Sessão da Câmara dos Deputados de 01 de julho de 1964]

Discussão do Projeto de Lei nº 1.042/63 (dispõe sobre a elaboração de um Plano Diretor Regional, ao qual ficará subordinada a utilização das áreas que constituem o Distrito Federal). Afirmação das condições de Habitalidade de Brasília. Defesa da sua consolidação absoluta como Capital do País.