Search results for "palm"

Local Spatial Log-Gaussian Cox Processes for seismic data

2022

AbstractIn this paper, we propose the use of advanced and flexible statistical models to describe the spatial displacement of earthquake data. The paper aims to account for the external geological information in the description of complex seismic point processes, through the estimation of models with space varying parameters. A local version of the Log-Gaussian Cox processes (LGCP) is introduced and applied for the first time, exploiting the inferential tools in Baddeley (Spat Stat 22:261–295, 2017), estimating the model by the local Palm likelihood. We provide methods and approaches accounting for the interaction among points, typically described by LGCP models through the estimation of th…

Investigation of Temperature-Induced Phase Transitions in DOPC and DPPC Phospholipid Bilayers Using Temperature-Controlled Scanning Force Microscopy

2004

Under physiological conditions, multicomponent biological membranes undergo structural changes which help define how the membrane functions. An understanding of biomembrane structure-function relations can be based on knowledge of the physical and chemical properties of pure phospholipid bilayers. Here, we have investigated phase transitions in dipalmitoylphosphatidylcholine (DPPC) and dioleoylphosphatidylcholine (DOPC) bilayers. We demonstrated the existence of several phase transitions in DPPC and DOPC mica-supported bilayers by both atomic force microscopy imaging and force measurements. Supported DPPC bilayers show a broad L(beta)-L(alpha) transition. In addition to the main transition …

Fluorescence microscopy studies of layer/substrate interaction during the Langmuir-Blodgett transfer: Fractional condensation and local layer modific…

1991

Transfer fluorescence microscopy reveals the substrate-mediated fractional condensation and phase-selective deposition of dipalmitoylphosphatidylcholine (DPPC) and dimyristoylphosphatidylethanolamine (DMPE) monolayers during the LB-transfer. Preferentially the higher ordered liquid-condensed (LC) state is transferred onto the substrate during the transfer of a monolayer in the LC/LE (liquid/expanded) coexistence state on the water subphase. This is manifested in the directly observable attraction of LC-domains towards the three-phase line and observation of a domain-free gap as consequence of the segregation of the fluorescent probe into the floating monolayer adjacent to the three-phase li…

Deletion of beta-fructofuranosidase (invertase) genes is associated with sucrose content in Date Palm fruit

2019

AbstractThe fruit of date palm trees are an important part of the diet for a large portion of the Middle East and North Africa. The fruit is consumed both fresh and dry and can be stored dry for extended periods of time. Date fruits vary significantly across hundreds of cultivars identified in the main regions of cultivation. Most dried date fruit are low in sucrose but high in glucose and fructose. However, high sucrose content is a distinctive feature of some date fruit and affects flavor as well as texture and water retention. To identify the genes controlling high sucrose content we analyzed date fruit metabolomics for association with genotype data from 121 date fruits. We found signif…

Size influences the effect of hydrophobic nanoparticles on lung surfactant model systems

2013

Item does not contain fulltext The alveolar lung surfactant (LS) is a complex lipid protein mixture that forms an interfacial monolayer reducing the surface tension to near zero values and thus preventing the lungs from collapse. Due to the expanding field of nanotechnology and the corresponding unavoidable exposure of human beings from the air, it is crucial to study the potential effects of nanoparticles (NPs) on the structural organization of the lung surfactant system. In the present study, we investigated both, the domain structure in pure DPPC monolayers as well as in lung surfactant model systems. In the pure lipid system we found that two different sized hydrophobic polymeric nanopa…

Taipalmaa

1673

An experimental investigation on the long-term compatibility of preheated crude palm oil in a large compression ignition diesel engine

2018

An experimental study was carried out on a large stationary compression ignition engine to evaluate the long-term compatibility and durability issues associated with the use of crude palm oil as fuel. Two different preheating temperatures (60 and 80 °C) were adopted to assess the potential improvements related to lower fuel viscosity. The results obtained, in terms of in-cylinder carbon deposits and engine wear, were compared with the results obtained using ordinary diesel fuel. For each fuel and preheating temperature, the engine was operated for 300 consecutive h, during which several engine lubricant samples were collected and analysed to determine soot and fuel contaminations, viscosity…

The species Phoenix excelsior Cav., its typification and diversity of complex Ph. dactylifera L. (Arecaceae)

2019

Se analiza y discute la diversidad y nomenclatura dentro del complejo de Phoenix dactylifera valorando la importancia de Phoenix excelsior Cav. para la caracterización del grupo occidental de palmeras datileras cuyo núcleo más definido lo constituye la palmera datilera española. Ante la ausencia de holotipo y de material original de Ph. excelsior se designa un neótipo. The diversity and nomenclature within the Phoenix dactylifera complex is analyzed and discussed, assessing the importance of Phoenix excelsior Cav. for the characterization of the western group of date palms whose most defined core is the Spanish date palm. In the absence of holotype and original material of Ph. excelsior a n…

AKT I / ACTO I / CT I Männer / Hombres / Men Chopins Männer / Los hombres de Chopin / Chopin?s Men

2021

Este ensayo se centra en la vida privada y amorosa del compositor polaco-francés Frédéric Chopin. Además de la bibliografía secundaria reciente, como algunas biografías, el texto se basa principalmente en un análisis de la correspondencia de Chopin, una parte importante de la cual ha sido publicada en muchas ediciones y traducida del polaco o el francés a varios idiomas. Mi investigación muestra que muchas de estas ediciones traducidas contienen irregularidades, como pronombres masculinos polacos originales que han sido traducidos como pronombres femeninos, o notas a pie de página que carecen de referencias. Esto ha obstaculizado una biografía completa de Chopin durante décadas. Esta invest…

Los orígenes del Museo Provincial de Bellas Artes de Palma (Mallorca) y sus inventarios iniciales: 1820-1850

2012

Una de las consecuencias de la desamortización de Mendizabal fue la creación de la red estatal de Museos Provinciales. Aquí se considera el origen del Museo de Bellas Artes de Palma en sus dos etapas iniciales: la primera es la que se vincula con la Sociedad Económica de Amigos del País, la cual realizó la primera recopilación de los fondos; la segunda, entre 1844 y 1850, discurre bajo el signo de la Comisión provincial de monumentos. Estos períodos llevan a cabo la selección de las obras, la instalación provisional del Museo y elaboraron una serie de inventarios de los bienes museísticos, de los cuales presentamos los realizados durante los años cuarenta. One of the consequences of the Spa…