Ultrastructure of secretory and senescence phase in colleters of Bathysa gymnocarpa and B. stipulata (Rubiaceae)

(Ultrastructure of secretory and senescence phase in colleters of Bathysa gymnocarpa and B. stipulata (Rubiaceae)). Colleters are secretory structures formed by a parenchymatic axis with vascular bundles, bound by a layer of secretory palisade-like epidermis. Some studies regarding the structure of colleters have focused on secretory cells structure, but not distinguished the secretory and senescent phases. Generally, in mucilage-secreting cells such as colleters, the endoplasmic reticulum and Golgi apparatus are involved in secretion production and transport. In these study, colleters structure of Bathysa gymnocarpa K. Schum. and B. stipulata (Vell.) C. Presl. (Rubiaceae) were determined in two phases: a secretory phase and a senescence one. Samples were collected and processed by usual light and electron microscopy techniques. Studied colleters are constituted by an epidermal palisade layer and a central axis formed by parenchymatic cells with rare vascular traces. During the secretory phase, epidermal cells presented a dense cytoplasm, small vacuoles, enhanced rough and smooth endoplasmic reticulum, and a Golgi apparatus close to large vesicles. During the senescence phase epidermal cells presented a disorganized membrane system. No intact organelles or vesicles were observed. The outer cell wall exhibited similar layers to that observed during the secretory phase. The senescent phase is easily defined by the morphology of the colleters, but not well defined at subcellular level. Our research suggests that programmed cell death starts on secretory phase. However, more evidences are needed to evaluate the phenomena.

Human T-cell lymphotropic virus type I (HTLV-I) proviral DNA viral load among asymptomatic patients and patients with HTLV-I-associated myelopathy/tropical spastic paraparesis

To evaluate the human T-cell lymphotropic virus type I (HTLV-I) proviral DNA load among asymptomatic HTLV-I-infected carriers and patients with HTLV-I-associated myelopathy/tropical spastic paraparesis (HAM/TSP), real time PCR using TaqMan probes for the pol gene was performed in two million peripheral blood mononuclear cells (PBMC). The albumin gene was the internal genomic control and MT2 cells were used as positive control. The results are reported as copies/10,000 PBMC, and the detection limit was 10 copies. A total of 89 subjects (44 HAM/TSP and 45 healthy HTLV-I-infected carriers) followed up at the Institute of Infectious Diseases "Emilio Ribas" and in the Neurology Division of Hospital of Clínicas were studied. The asymptomatic HTLV-I-infected carriers had a median number of 271 copies (ranging from 5 to 4756 copies), whereas the HAM/TSP cases presented a median of 679 copies (5-5360 copies) in 10,000 PBMC. Thus, HAM/TSP patients presented a significantly higher HTLV-I proviral DNA load than healthy HTLV-I carriers (P = 0.005, one-way Mann-Whitney test). As observed in other persistent infections, proviral DNA load quantification may be an important tool for monotoring HTLV-I-infected subjects. However, long-term follow-up is necessary to validate this assay in the clinical setting.

Gengibre (zingiber officinale roscoe) brasileiro: aspectos gerais, óleo essencial e oleoresina. parte 2 - secagem, óleo essencial e oleoresina

A partir de amostras de gengibre (Zingiber officinale Roscoe) do tipo "Gigante", oriundas das diversas localidades produtoras do Brasil, procurou-se estabelecer as melhores condições de processamento e verificar a qualidade do óleo essencial e da oleoresina obtidos. A composição do óleo essencial de gengibre gigante varia de acordo com a técnica de extração e o estado do rizoma. Os óleos essenciais de rizomas frescos e secos foram comparados através de seus índices físico-químicos e composição por CG. São apresentadas as características do óleo essencial do rizoma seco obtido por arraste direto a vapor. Nas oleoresinas obtidas com diferentes solventes determinou-se o teor de óleo essencial. O gengibre comercial brasileiro fornece óleo essencial num rendimento de 2,2% e oleoresina em rendimentos que variam de 6,91-10,90% (etanol), 2,53-5,62% (acetona) e 3,35-3,91% (dicloroetano), sendo alternativas interessantes de utilização.

Construction of 2D transparent micromodels in polyester resin with porosity similar to carrots

Microscopic visualization, especially in transparent micromodels, can provide valuable information to understand the transport phenomena at pore scale in different process occurring in porous materials (food, timber, soils, etc.). Micromodels studies focus mainly on the observation of multi-phase flow, which presents a greater proximity to reality. The aim of this study was to study the process of flexography and its application in the manufacture of polyester resin transparent micromodels and its application to carrots. Materials used to implement a flexo station for micromodels construction were thermoregulated water bath, exposure chamber to UV light, photosensitive substance (photopolymer), RTV silicone polyester resin, and glass plates. In this paper, data on size distribution of a particular kind of carrot we used, and a transparent micromodel with square cross-section as well as a Log-normal pore size distribution with pore radii ranging from 10 to 110 µm (average of 22 µm and micromodel size of 10 × 10 cm) were built. Finally, it stresses that it has successfully implemented the protocol processing 2D polyester resin transparent micromodels.

Antioxidant activity and prevention of pork meat lipid oxidation using traditional Mexican condiments (pasilla dry pepper, achiote, and mole sauce)

Considering the extensive use of hot peppers and spicy sauces in the Mexican cuisine, in the present paper, three widely consumed Mexican condiments (mole sauce, achiote, and pasilla hot pepper) were analyzed for their total phenols, flavonoids and proanthocyanidins, antioxidant activity, and protective effect against lipid oxidation in chopped pork meat. All samples were extracted first with methanol and then with acetone, and the extracts were compared. Pasilla pepper showed the highest phenolic and flavonoid content in both solvents, followed by mole and achiote. Achiote showed the highest proanthocyanidin concentration. All samples showed high antioxidant activity, and good correlations with phenolic compounds and flavonoids, while no correlation was observed in the case of condensed tannins. Mole sauce methanolic extract showed the highest inhibition of pork meat oxidation, followed by pasilla pepper, and finally achiote paste extracts. These results suggest that these condiments are useful to prevent meat lipid oxidation during storage.

Evaluating the wage differential between public and private sectors in Brazil

This paper uses a rotating panel of households to analyze wage differentials between public and private sectors in Brazil. Focusing on the transition of individuals between jobs available in the public and private sectors and controlling for individual time invariant characteristics, we find evidence of small wage differentials in favor of the public sector.

Fiscal policy and private investment: latin america in a comparative perspective

The main objective of the paper is to assess the impact of fiscal variables on private investment comparing some Latin-American economies to other advanced ones. For such purposes, the authors carry out an econometric analysis for the period 1990-2008. They make use of two dynamic panel models in which they group countries with similar characteristics and development levels. In one of them, they include Mexico, Brazil, Chile, Colombia and Uruguay; whereas in the second one the countries accounted for are the U.S., Canada, Spain, Korea, Ireland and Japan. They specify in both models an investment function using as arguments a wide range of variables, including those related with fiscal policy. From their results the authors infer that governments can, with higher spending, boost up the economy even when they finance spending with higher taxes. In Latin America, where income concentration is enormous, a proposal to boost up the economy through higher government expenditure financed with a progressive income tax, is even more justified.

Revue du XIXe siècle / L. Guérin, directeur-gérant

1854/12/15 (T2,VOL2).

Revue du XIXe siècle (Paris. 1854)

Variante(s) de titre : Revue du dix-neuvième siècle

Revue du XIXe siècle / L. Guérin, directeur-gérant

1854/04 (A1,T1)-1854/10 (A1,T1).

Revue du XIXe siècle / L. Guérin, directeur-gérant

1855/02/15 (T1,VOL1).

Recueil de pièces originales et de copies de pièces indiquées comme telles dans le dépouillement qui suit.

Contient : 1 « Instruction pour le reglement et entretenement des galleres du roy et armées de mer es partyes de Levant... Faict à Marseille, le vingtiesme jour d'aoust mil cinq cens soixante et dix » ; 2 « Description au vray de la construction du corps d'une gallere neufve, subtile ou bastardelle, qu'on pourra armer à galoche, c'est à dire quatrirame, et l'ordre qu'il convyent observer en ladicte construction » ; 3 « Estat abregé de la recepte et despense faicte pour le faict de l'advitaillement de l'armée de mer que le roy avoit deliberé mettre sus pour son service au pays et duché de Normendie... 1559 et 1560 » ; 4 « Advertissement à monseigneur de Biron, chevalier de l'ordre du roy, grand maistre et cappitaine general de son artillerye, de ce qui seroit bien necessaire pour le service dudict seigneur au faict de son artillerye au païs de Piedmont... Faict à Pignerolle, le quatreieme jour de janvier mil cinq cens soixante et douze ». Signé : « DE CARONDELET » ; 5 « Estat au vray du payement faict par Me François de La Gorse, conseiller du roy et tresorier de l'extraordinaire de ses guerres, de l'ordonnance et commandement de monseigneur le duc de Nivernois, pair de France, gouverneur et lieutenant general pour Sa Majesté au païs de Piemont et marquisat de Salusse, pour les estatz, pensions et entretenemens tant de luy que de plusieurs gentilz hommes, cappitaines, gouverneurs de places et autres entretenus pour le service de Sa Majesté au païs de Piemont et marquisat de Salusse, pour huict mois entiers, commencés le premier jour de janvier M.V.C. soixante treize et finis le dernier jour d'aoust ensuivant » ; 6 « Confessions de POLTROT sur les interrogatz à luy faicts de l'assasinat commis par luy en la personne de feu François de Lorraine, duc de Guise, au camp de St Hilaire pres St Mesmin... Du XXe jour de febvrier, l'an mil cinq cens soixante deux ». Copie ; 7 « Coppie de l'arrest donné au conseil privé du roy, le 29 janvier mil cinq cens soixante cinq, à la poursuitte de la maison de Guise, pour l'assassinat commis en la personne de feu monsieur le duc de Guise, François de Lorraine » ; 8 Mémoire sur la tactique militaire, à propos des guerres de religion en France. En italien ; 9 « Ligue faicte entre le roy Charle neufviesme et la royne d'Angletere » Elizabeth. En latin. Copie ; 10 « Instruction au sieur de Malras, ambassadeur pour le roy à Rome, sur le fait de l'abbaye de Vaucelles, scituée au pais de Cambresis... Signé : CHARLES,... Le dernier jour d'octobre mil cinq cens soixante et unze ». Copie ; 11 « Memoire touchant ladite abbaye de Vaucelles ». Copie ; 12 « Instruction à monseigneur d'Oisel, envoyé de la part du roy vers le roy d'Espagne. 1563. » Copie ; 13 « Extraict de l'instruction du sieur de Laubespine le jeune, envoyé par le roy en Espagne en 1564 » ; 14 « Memoire envoyé par le roy au sieur de Schomberg, estant de la part de Sa Majesté vers les princes de la Germanie, pour faire entendre ausdictz princes sur la mort de l'admiral... Fait à Paris, le 25e aoust 1572, signé : CHARLES » ; 15 Mémoire du duc DE NEVERS, contenant copie d'un état des deniers perçus par lui de 1549 à 1578 ; 16 « L'Ordre et reigle que anciennement se gardoit aux armées pour le faict et distribution des vivres de munition ». Copie ; 17 « Memoire » sur « des feux d'artifice de guerre » ; 18 « Discours sur les fortificacions... par LA TRUILLE, commissaire de l'artillerie du roy... 8 novembre 1566 » ; 19 « Reglement » fait par ceux de la religion réformée. 20 juillet 1567. Copie ; 20 « Ordonnances des cent Suisses de la garde du roy, en langaige d'allemant et françois... Signé : Guillaume Tonguiner,... Faict le seiziesme jour de janvier 1567 ». Copie ; 21 « Memoria di quello che EMILIO CAVRIANI,... ha visto... in cinque asedii dove s'e trovato in Italia ». En italien

Seminarios talleres y foros

Archivo Fotográfico

Sistemas de recuperación de energía en motores de inducción de rotor devanado con regulación de velocidad

Tesis (Maestría en Ciencias de la Ingeniería Eléctrica con Especialidad en Potencia) UANL