Search results for "Micro"
showing 10 items of 23412 documents
Collecting and preserving plant DNA for huanglongbing diagnosis in citrus samples from China
2016
Accurate and sensitive detection of Citrus Huanglongbing associated ‘Ca. Liberibacter’species, not currently reported in the European and Mediterranean area, is an imperative need to define certification programs, to prevent introduction of the bacteria and/or their vectors in the unaffected areas, and to delineate efficient management strategies in those areas where the disease has spread. In this study, we compared different citrus sample preparation procedures for PCR based detection methods of ‘Candidatus Liberibacter asiaticus’, in order to find out the best a way to transport and preserve samples of Shatangju mandarin and fingered citron obtained during a survey in citrus orchards in …
Three-dimensional crystallization of the light-harvesting complex from Mantoniella squamata (Prasinophyceae) requires an adequate purification proced…
1995
Abstract We present a new purification procedure for the light-harvesting complex of Mantoniella squamata whereupon three-dimensional crystallization succeeded. Previous purification methods were based on density centrifugations as the only separating principle. We have extended this preparation procedure by applying anion-exchange and molecular-sieve chromatography techniques. Purity and stability of the complex were proved by denaturing and non-denaturing polyacrylamide-gel electrophoresis, and spectroscopic measurements. With respect to contaminating lipids the purified pigment-protein complex was examined by thin-layer chromatography and the aggregation and/or oligomeric states were inv…
Integrative analysis of the mineralogical and chemical composition of modern microbialites from ten Mexican lakes: What do we learn about their forma…
2021
International audience; Interpreting the environmental conditions under which ancient microbialites formed relies upon comparisons with modern analogues. This is why we need a detailed reference framework relating the chemical and mineralogical compositions of modern microbialites to the physical and chemical parameters prevailing in the environments where they form. Here, we measured the chemical, including major and trace elements, and mineralogical composition of microbialites from ten Mexican lakes as well as the chemical composition of the surrounding waters. Saturation states of lakes with different mineral phases were systematically determined and correlations between solution and so…
Chemical Composition and Biological Activities of Prangos ferulacea Essential Oils
2022
Prangos ferulacea (L.) Lindl, which belongs to the Apiaceae family, is a species that mainly grows in the eastern Mediterranean region and in western Asia. It has been largely used in traditional medicine in several countries and it has been shown to possess several interesting biological properties. With the aim to provide new insights into the phytochemistry and pharmacology of this species, the essential oils of flowers and leaves from a local accession that grows in Sicily (Italy) and has not yet been previously studied were investigated. The chemical composition of both oils, obtained by hydrodistillation from the leaves and flowers, was evaluated by GC-MS. This analysis allowed us to …
Circular RNA in Exosomes
2018
Circular RNAs (circRNAs) are a novel family of non-coding endogenous RNAs discovered in all eukaryotic cells and generated through a particular mechanism of alternative splicing called “back-splicing”. These molecules show multiple functions, by acting as modulators of gene and miRNA expression, and may have a role in several biological processes, such as cell proliferation and invasion with, tumour development and progression, and in several mechanisms underlying other diseases. Their presence has been shown to be abundant in several body fluids such as blood and saliva. Based on their biogenesis mechanism, cir- cRNAs may be categorized into five classes: exonic circRNAs, intronic circRNAs…
Evaluating the Utilization of Innovative Electrochemical Methodologies for the Real Wastewater Treatment
2021
The Greenland shark Somniosus microcephalus—Hemoglobins and ligand-binding properties
2017
A large amount of data is currently available on the adaptive mechanisms of polar bony fish hemoglobins, but structural information on those of cartilaginous species is scarce. This study presents the first characterisation of the hemoglobin system of one of the longest-living vertebrate species (392 +/- 120 years), the Arctic shark Somniosus microcephalus. Three major hemoglobins are found in its red blood cells and are made of two copies of the same a globin combined with two copies of three very similar beta subunits. The three hemoglobins show very similar oxygenation and carbonylation properties, which are unaffected by urea, a very important compound in marine elasmobranch physiology.…
Atom-field dressed states in slow-light waveguide QED
2015
We discuss the properties of atom-photon bound states in waveguide QED systems consisting of single or multiple atoms coupled strongly to a finite-bandwidth photonic channel. Such bound states are formed by an atom and a localized photonic excitation and represent the continuum analog of the familiar dressed states in single-mode cavity QED. Here we present a detailed analysis of the linear and nonlinear spectral features associated with single- and multi-photon dressed states and show how the formation of bound states affects the waveguide-mediated dipole-dipole interactions between separated atoms. Our results provide a both qualitative and quantitative description of the essential strong…
IT projekta pārcelšana uz Microsoft Azure mākoņa platformu
2015
Pēdējo gadu laikā, strauji pieaugot interneta ātrumam un izplatībai, palielinās uzņēmumu interese par projektu izstrādi un uzturēšanu mākonī. Microsoft piedāvā produktu Azure, kas nodrošina ērtu un elastīgu risinājumu projektu uzturēšanai un izstrādei apvienojumā ar iespējām mainīt nepieciešamos datu apstrādes un skaitļošanas resursus, saglabājot salīdzinoši mazas izmaksas. Microsoft Azure piemērots visa izmēra projektiem. Darbā aplūkotas galvenās lietas, par ko jāpadomā pirms sākt projekta pārcelšanu uz Microsoft Azure un galvenās problēmas, kādas varētu rasties, pārceļot, izstrādē jau esošu projektu uz Microsoft Azure mākoņa platformu. Salīdzinātas priekšrocības un trūkumi projekta uzturē…
Ietvaru salīdzināšana tīmekļa lietotnes ģenerēšanai no datu modeļa
2018
Tīmekļa vietņu apjoms visā pasaulē arvien palielinās, tāpēc ir nepieciešams pēc dažādu sarežģītību veidu tīmekļa vietnēm. Lai ātri un ērti izveidotu tīmekļa vietni, ar vai bez noteiktām biznesa prasībām, nepieciešams ņemt vērā dažādi faktori kā tiks veidota tīmekļa vietne. Darba mērķis ir salīdzināt programmu ietvarus tīmekļa vietņu ģenerēšanai, balstoties uz iepriekš izveidotas datu bāzes. Tiks izpētīts ietvaru rīku funkcionālās iespējas un pielāgošana noteiktām vajadzībām. Svarīgs vērtēšanas kritērijs ir ietvaru piedāvātie palīgrīki izstrādes gaitas paātrināšanai. Pēc šiem kritērijiem izvēlētie ietvari tiks salīdzināti un iegūti secinājumi.