Search results for "chord"

showing 10 items of 237 documents

A secure architecture for P2PSIP-based communication systems

2009

Today, Peer-to-Peer SIP based communication systems have attracted much attention from both academia and industry. The decentralized nature of P2P might provide the distributed peer-to-peer communication system without help of the traditional SIP server. However, it comes to the cost of reduced manageability and therefore causes security problems, e.g. distrust, privacy leaks, unpredictable availability, etc. In this paper, we investigate on P2PSIP security issues and propose a proxy-based system architecture that improves security during P2PSIP session initiation. The main issues considered in this architecture include Source inter-working, Encryption & Decryption, Policy Management, Desti…

PastryComputer sciencebusiness.industryComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSComputer securitycomputer.software_genreCommunications systemEncryptionDistributed hash tableContent addressable networkDistributed System Security ArchitectureSystems architecturebusinessChord (peer-to-peer)computerComputer networkProceedings of the 2nd international conference on Security of information and networks - SIN '09
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Exposure to trihalomethanes through different water uses and birth weight, small for gestational age, and preterm delivery in Spain

2011

Background: Evidence associating exposure to water disinfection by-products with reduced birth weight and altered duration of gestation remains inconclusive. Objective: We assessed exposure to trihalomethanes (THMs) during pregnancy through different water uses and evaluated the association with birth weight, small for gestational age (SGA), low birth weight (LBW), and preterm delivery. Methods: Mother–child cohorts set up in five Spanish areas during the years 2000–2008 contributed data on water ingestion, showering, bathing, and swimming in pools. We ascertained residential THM levels during pregnancy periods through ad hoc sampling campaigns (828 measurements) and regulatory data (264 me…

PediatricsFetus -- CreixementBathingHealth Toxicology and MutagenesisEspaña:Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans [Medical Subject Headings]Cohort Studies:Analytical Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Models Theoretical [Medical Subject Headings]small for gestational agePregnancynewbornFemeninosExposición a Riesgos Ambientales:Phenomena and Processes::Reproductive and Urinary Physiological Phenomena::Reproductive Physiological Phenomena::Reproductive Physiological Processes::Reproduction::Pregnancy [Medical Subject Headings]:Geographicals::Geographic Locations::Europe::Spain [Medical Subject Headings]water pollutionInfeccions respiratòries -- EpidemiologiaAdultodisinfection by-products:Named Groups::Persons::Age Groups::Infant::Infant Newborn::Infant Low Birth Weight [Medical Subject Headings]Modelos TeóricosEnvironmental exposurepremature birthNacimiento PrematuroHumanos:Health Care::Environment and Public Health::Public Health::Environmental Pollution::Environmental Exposure [Medical Subject Headings]:Analytical Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Statistics as Topic::Models Statistical::Logistic Models [Medical Subject Headings]Premature birthInfant Small for Gestational AgeGestation:Named Groups::Persons::Age Groups::Infant::Infant Newborn::Infant Low Birth Weight::Infant Small for Gestational Age [Medical Subject Headings]Femaleepidemiologymedicine.symptomAigua -- DepuracióAdultmedicine.medical_specialtytrihalomethanesContaminantes Químicos del AguaEmbarazoBirth weight:Named Groups::Persons::Age Groups::Infant::Infant Newborn [Medical Subject Headings]Embaràs -- Aspectes nutricionalsRecién nacidoRecién Nacido Pequeño para la Edad GestacionalEnvironmental healthmedicine:Named Groups::Persons::Age Groups::Adult [Medical Subject Headings]cohort studyModelos LogísticosHumanslow birth weightEpidemiologiaRecién Nacido de Bajo Peso:Chemicals and Drugs::Organic Chemicals::Hydrocarbons::Hydrocarbons Halogenated::Trihalomethanes [Medical Subject Headings]Pregnancybusiness.industryTrihalometanoResearchPublic Health Environmental and Occupational HealthInfant Newbornbirth weightEnvironmental ExposureInfant Low Birth WeightModels Theoreticalmedicine.diseaseLow birth weightLogistic Models:Check Tags::Female [Medical Subject Headings]Spain:Analytical Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Epidemiologic Study Characteristics as Topic::Epidemiologic Studies::Cohort Studies [Medical Subject Headings]Small for gestational age:Chemicals and Drugs::Chemical Actions and Uses::Toxic Actions::Environmental Pollutants::Water Pollutants::Water Pollutants Chemical [Medical Subject Headings]:Diseases::Female Urogenital Diseases and Pregnancy Complications::Pregnancy Complications::Obstetric Labor Complications::Obstetric Labor Premature::Premature Birth [Medical Subject Headings]businessEstudios de CohortesWater Pollutants Chemical
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Jaw osteonecrosis management around a dental implant inserted 2 years before starting treatment with zoledronic acid

2015

Journal Article; Bisphosphonates (BP) are a type of drug known to inhibit bone resorption through complex interventions. Their primary mechanism of action is aimed at the cellular level, inhibiting osteoclast activity and so bone resorption. BPs are widely used, with many patients receiving continuous treatment for years. But it is well known that these drugs can produce osteonecrosis of the jaw (ONJ). Zoledronic acid (ZA) is an intravenous BP used in the treatment and prophylaxis of bone disease in patients with malignant tumors with bone implication. ZA is the most potent BP in clinical development. This report describes the case of a 62-year-old woman with breast cancer antecedents which…

Peri-implantitisBone diseasemedicine.medical_treatmentDifosfonatosDentistryCase Report:Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans [Medical Subject Headings]Peri-implantitisDental implant:Chemicals and Drugs::Organic Chemicals::Organophosphorus Compounds::Diphosphonates [Medical Subject Headings]Implantes dentales:Anatomy::Cells::Connective Tissue Cells::Macrophages::Osteoclasts [Medical Subject Headings]ImidazolesOsteonecrosisBisphosphonates:Diseases::Neoplasms [Medical Subject Headings]:CIENCIAS MÉDICAS [UNESCO]Ciencias de la saludNeoplasiasHumanosmedicine.anatomical_structureNeoplasias de la mama:Chemicals and Drugs::Biomedical and Dental Materials::Dental Materials::Dental Implants [Medical Subject Headings]UNESCO::CIENCIAS MÉDICASMaxillectomy:Diseases::Stomatognathic Diseases::Mouth Diseases::Peri-Implantitis [Medical Subject Headings]Oral SurgeryResorción óseamedicine.drugmedicine.medical_specialtyOdontología:Diseases::Musculoskeletal Diseases::Bone Diseases::Osteonecrosis [Medical Subject Headings]Bone resorptionBreast cancerOsteoclast:Chemicals and Drugs::Heterocyclic Compounds::Heterocyclic Compounds 1-Ring::Azoles::Imidazoles [Medical Subject Headings]medicinePeriimplantitisGeneral DentistryZoledronic acid:Diseases::Neoplasms::Neoplasms by Site::Breast Neoplasms [Medical Subject Headings]Osteonecrosis of the jawbusiness.industry:Phenomena and Processes::Musculoskeletal and Neural Physiological Phenomena::Musculoskeletal Physiological Phenomena::Musculoskeletal Physiological Processes::Bone Remodeling::Bone Resorption [Medical Subject Headings]Osteoclastosmedicine.diseaseSurgeryZoledronic acid:Check Tags::Female [Medical Subject Headings]Osteonecrosis of the jawbusinessJournal of Clinical and Experimental Dentistry
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In vitro release of lectins by Phallusia mamillata hemocytes.

1991

Abstract α-Lactose specific lectins are released from Phallusia mamillata hemocytes during short-term cultures. The molecular weight of the subunits, the immunological cross-reaction and the sugar specificity suggest that the released lectins are similar to those isolated from the sonicated hemocytes. Because lectin release appears to take place independently of active protein synthesis, the possibility exists that lectins are pre-formed, stored in hemocytes and released when in vitro conditions stimulate the cells.

PhallusiaAmanitinsHemocytesHemocyteImmunologyBiologyTunicateLectinsAnimalsUrochordataCycloheximideCells Culturedchemistry.chemical_classificationLectinActive proteinbiology.organism_classificationIn vitroCulture MediaBiochemistrychemistryReleasebiology.proteinDactinomycinLiberationGlycoproteinSecretory RateLectinDevelopmental BiologyDevelopmental and comparative immunology
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Sugar specific cellular lectins of Phallusia mamillata hemocytes: Purification, characterization and evidence for cell surface localization

1989

Cellular lectins (CLs) of Phallusia mamillata were demonstrated in protein preparations obtained by salt fractionation from hemocytes sonicated in a suitable medium. Since the lectins from the precipitated fraction bind sugars containing D-galactosyl groups, they were purified by affinity chromatography on Sepharose. SDS-PAGE under reducing conditions showed that CLs are formed of two components of apparent MWs approximately 36,900 and 35,090 and thus differ from serum lectins (SLs) (MW about 62,200). The "shrinkage" observed when SLs were examined under nonreducing conditions suggest the presence of intrachain disulphide bonds which can affect the molecular structure of the SLs. CL-SL diff…

PhallusiaHemocytesImmunologyLactoseHemocyteImmunoelectrophoresisTunicateChromatography AffinitySepharoseAffinity chromatographyLectinsmedicineAnimalsUrochordatachemistry.chemical_classificationGel electrophoresisBlood Cellsbiologymedicine.diagnostic_testCell MembraneLectinHemagglutination Inhibition Testsbiology.organism_classificationImmunodiffusionMolecular WeightchemistryBiochemistrybiology.proteinGlycoproteinLectinDevelopmental Biology
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On the action of chromomycin on the eggs and embryos of Ciona intestinalis.

1964

E stata studiata l'azione della cromomicina sulle uova diCiona intestinalis (Ascidie) in diversi stadi di sviluppo. Essa non esercita alcun effetto sull'uovo vergine o appena fecondato; modifica invece notevolmente la morfogenesi se il trattamento e portato sulle uova in gastrulazione. I risultati vengono spiegati ammettendo che la cromomicina esercita la stessa azione che la actinomicina D e cioe inibisce la sintesi del MRNA.

PharmacologyEmbryo NonmammalianbiologyEmbryoCell BiologyIn Vitro Techniquesbiology.organism_classificationMolecular biologyAnti-Bacterial AgentsToxicologyCellular and Molecular NeuroscienceChordata NonvertebrateMolecular MedicineAnimalsRNACiona intestinalisFemaleMolecular BiologyCell DivisionOvumExperientia
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Single giant larvae ofAscidia malaca from double eggs

1969

E stata operata la fusione due a due di uova vergini diAscidia malaca. Le uova giganti cosi ottenute, sono state successivamente fecondate e il loro sviluppo e stato seguito. Da esse sono state ottenute in numerosi casi delle larve giganti che mostravano unicita in tutti i loro organi. L'osservazione dell'uovo gigante, dopo fecondazione, permette di asserire che le larve giganti sono triploidi.

PharmacologyLarvaZoologyCell BiologyBiologybiology.organism_classificationAscidiaCellular and Molecular NeuroscienceChordata NonvertebrateFertilizationAnimalsMolecular MedicineFemaleMolecular BiologyOvumExperientia
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Erythrocyte agglutinins in the blood of certain Ascidians

1975

Plasma from Ciona intestinalis, Phallusia mamillata and Ascidia malaca possess hemagglutinin for a variety of erythrocytes. Results obtained by physical and chemical treatments suggest that hemagglutinin for Phallusia mamillata and Ascidia malaca may be a protein or a protein-like substance.

PharmacologyPhallusiaErythrocytesSheepbiologyA proteinCell BiologyHemagglutininbiology.organism_classificationPepsin ACiona intestinalisRatsMicrobiologyCellular and Molecular NeuroscienceHemagglutininsAgglutininsAnimalsHumansMolecular MedicineRabbitsUrochordataMolecular BiologyMercaptoethanolExperientia
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Incorporation of phenylalanine-H3 in the fragments of the fertilized ascidian egg

1972

E'stata studiata l'incorporazione di fenilalanina-H3 nelle meta animali e vegetative delle uova fecondate di Ascidie tagliate subito dopo l'emissione del 1° e del 2° globulo polare, allo scopo di vedere se le potenzialita di sviluppo delle meta vegetative fossero legate con un diverso metabolismo proteico. I risultati hanno mostrato che entrambe le meta incorporano fenilalanina-H3.

PharmacologyPhenylalaninePhenylalanineCell BiologyBiologyTritiumCellular and Molecular NeuroscienceChordata NonvertebrateFertilizationProtein BiosynthesisBotanyAnimalsAutoradiographyMolecular MedicineFemaleMolecular BiologyCell DivisionOvumExperientia
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A light and electron microscope study of spherical structures in the test cells of an ascidianCiona intestinalis L.

1984

Spherical structures in the test cells that surround the embryos of the ascidianCiona intestinalis L. (Tunicata, phylum Chordata) were studied by both light and electron microscope. Our data support the view that these structures are microorganism-like cells living in symbiosis with the test cells. Their possible role is discussed.

Pharmacologyanimal structuresbiologyCell BiologyAnatomyTest (biology)Phylum Chordatabiology.organism_classificationlaw.inventionCellular and Molecular NeurosciencelawTransmission electron microscopyUltrastructureBiophysicsMolecular MedicineCiona intestinalisElectron microscopeMolecular BiologyExperientia
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