Search results for "Organic Chemical"

showing 10 items of 733 documents

Biodeterioration of cardboard-based liquid containers collected for fibre reuse.

1999

Liquid packaging board (LPB) collected in Germany is processed in Finland as recycled fibre and as plastic reject for incineration. The chemical, biological and physical changes occurring in recycled LPB bales were monitored during storage of six and 18 months. The moisture content in the core of the bales ranged from 7% to 53%, and pH values varied from 6.0 to 8.5. The average amount of mesophilic bacteria per container was 1.5 x 10(7) - 5 x 10(8), which means that recycled LPB pulp cannot be recommended for sanitary use. The concentration of CO2 inside the bale is an indicator of the activity of aerobic microorganisms and might be suitable for identifying deteriorated bales and removing t…

PaperConservation of Natural ResourcesEnvironmental EngineeringInsectaHealth Toxicology and MutagenesisIncinerationengineering.materialLiquid packaging boardchemistry.chemical_compoundProduct PackagingEnvironmental ChemistryHumic acidAnimalsOrganic matterCelluloseOrganic ChemicalsSanitationCelluloseWater contentHumic Substanceschemistry.chemical_classificationWaste managementBacteriaPulp (paper)Public Health Environmental and Occupational HealthcardboardGeneral MedicineGeneral ChemistryPulp and paper industryPollutionRefuse DisposalBiodegradation Environmentalchemistryvisual_artvisual_art.visual_art_mediumengineeringPublic HealthMesophileChemosphere
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Pyrolysis-GC-MS and CuO-oxidation-HPLC in the characterization of HMMs from sediments and surface waters downstream of a pulp mill

1998

Abstract High molecular mass fractions of lignin and humic compounds in sediments and waters downstream of a pulp mill were characterized applying pyrolysis-gas chromatography-mass spectrometry. The results were compared to those obtained using reversed phase HPLC on the cupric oxide oxidation products. The chromatographic data of both pyrolysis and cupric oxide oxidation were also subjected to the principal component analysis (PCA). The sediment samples and fractions obtained by ultrafiltration of river water samples were freeze dried prior to characterization. The sediment samples were also extracted using 2 M sodium hydroxide solution. The extracts were ultrafiltrated, freeze dried and c…

PaperEnvironmental EngineeringHealth Toxicology and MutagenesisUltrafiltrationFresh WaterHigh-performance liquid chromatographyGas Chromatography-Mass SpectrometryGel permeation chromatographychemistry.chemical_compoundSoil PollutantsEnvironmental ChemistryHumic acidOrganic ChemicalsFuransChromatography High Pressure LiquidFinlandchemistry.chemical_classificationChromatographyExtraction (chemistry)Public Health Environmental and Occupational HealthGeneral MedicineGeneral ChemistryReversed-phase chromatographyPollutionMolecular WeightchemistrySodium hydroxideGas chromatographyCopperWater Pollutants ChemicalChemosphere
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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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Outcome of Refractory Anemia with Ringed Sideroblasts Associated with Marked Thrombocytosis (RARS-T) In a Large Cohort of Patients

2010

Abstract Abstract 4113 Introduction: Most of the data related to RARS-T, a rare disorder, involve small cohorts of patients. We aimed to analyze more patients also considering a variety of myelodysplastic or myeloproliferative disorders. Objective: To compare a large cohort of patients with RARS-T to refractory anemia with ringed sideroblasts (RARS), refractory anemia with ringed sideroblasts and multilineage dysplasia (RARS-MD) or essential thrombocythemia (ET) at the time of diagnosis and during disease evolution, in terms of survival and complications. Materials: Data of a European multi-center study was used including 199 cases of RARS-T 173 cases of RARS, 102 cases of RARS-MD and 431 c…

Pediatricsmedicine.medical_specialtyThrombocytosisbusiness.industryEssential thrombocythemiaorganic chemicalsMyelodysplastic syndromesImmunologyCell BiologyHematologyRefractory anemia with ringed sideroblastsmedicine.diseaseBiochemistryGastroenterologybiological factorsbody regionsLeukemiaMyeloproliferative DisordersDysplasiaInternal medicineembryonic structuresmedicineHemoglobinbusinessneoplasmsBlood
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Linezolidtherapie bei zwei Frühgeborenen mit nekrotisierender Enterokolitis und Infektion durch Vancomycin-resistente Enterokokken

2004

The use of the antibiotic Linezolid in two premature babies with necrotizing enterocolitis and infection with vancomycin-resistant enterococcus is described. Therapy with Linezolid in cause of necrotizing enterocolitis is an exception. Actually there are no proven recommendations for the use in this age group. Despite the successfully results more investigations for the use of linezolid in newborns and prematures are necessary.

Pediatricsmedicine.medical_specialtymedicine.drug_classAntibioticsDrug resistancemedicine.disease_causechemistry.chemical_compoundPharmacotherapymedicineheterocyclic compoundsVancomycin-resistant EnterococcusEnterocolitisbiologybusiness.industryorganic chemicalsbiochemical phenomena metabolism and nutritionbacterial infections and mycosesmedicine.diseasebiology.organism_classificationEnterococcuschemistryPediatrics Perinatology and Child HealthNecrotizing enterocolitisLinezolidbacteriamedicine.symptombusinessKlinische Pädiatrie
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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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Inflammation in the Human Periodontium Induces Downregulation of the α1- and β1-Subunits of the sGC in Cementoclasts

2021

Nitric oxide (NO) binds to soluble guanylyl cyclase (sGC), activates it in a reduced oxidized heme iron state, and generates cyclic Guanosine Monophosphate (cGMP), which results in vasodilatation and inhibition of osteoclast activity. In inflammation, sGC is oxidized and becomes insensitive to NO. NO- and heme-independent activation of sGC requires protein expression of the &alpha

Periodontium0301 basic medicinealveolar bonecementoclastslcsh:Chemistrychemistry.chemical_compound0302 clinical medicineCathepsin Kheterocyclic compoundsperiodontitisCyclic GMPlcsh:QH301-705.5SpectroscopyGeneral MedicineComputer Science ApplicationsResorptionCell biologymedicine.anatomical_structurecardiovascular systemOxidation-Reductioncementuminorganic chemicalsPeriodontal LigamentIronAntigens Differentiation MyelomonocyticHemeArticleCatalysisNitric oxideInorganic Chemistry03 medical and health sciencesstomatognathic systemAntigens CDnitric oxideOsteoclastmedicineAnimalsHumansddc:610CementumPhysical and Theoretical ChemistryMolecular BiologyCyclic guanosine monophosphateInflammationOrganic Chemistrysoluble guanylyl cyclase030206 dentistryPeriodontiumcGMPosteoclasts030104 developmental biologyGene Expression Regulationlcsh:Biology (General)lcsh:QD1-999chemistrySoluble guanylyl cyclaseInternational Journal of Molecular Sciences
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Application of Organic Monolithic Materials to Enantioseparation in Capillary Separation Techniques.

2017

This review article is primarily focused on the state-of-the-art of enantioseparations on organic monolithic materials. The article gives an overview of the chiral stationary phases and its application in capillary electrochromatography (CEC), and capillary- and nano-liquid chromatography (cLC and nLC). Since thousands of publications have been emerged from 2000’s and citing all these papers would extend the scope of this review; then, recent developments from last 10 years (2006 to 2016) will be mentioned. Mostly, stationary phases based on copolymers obtained from chiral functional monomers and surface modifications of organic monoliths with chiral ligands will be discussed. The effective…

PharmacologyCapillary electrochromatographyMaterials scienceOrganic chemicalsCapillary action010401 analytical chemistryOrganic ChemistryAnalytical chemistryNanotechnologyStereoisomerism010402 general chemistry01 natural sciencesBiochemistry0104 chemical sciencesFunctional monomerDrug DiscoveryMicroscopy Electron ScanningMolecular MedicineOrganic ChemicalsChromatography Micellar Electrokinetic CapillaryCurrent medicinal chemistry
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Organic carbonates as alternative solvents for asymmetric hydrogenation

2009

Organic carbonates like propylene carbonate (PC) or butylene carbonate (BC) belong to the class of aprotic, highly dipolar solvents (AHD). Interestingly, their potential as solvents for asymmetric catalysis has been overlooked for a long time. The aim of this work is to evaluate organic carbonates and other organic solvents like THF, CH2Cl2, and acetonitrile as well as members of the AHD-family (DMF, DMSO, etc.) as media for homogeneous asymmetric hydrogenation. For this reason cationic Rh-complexes based on chiral phosphine ligands were tested in the hydrogenation of typical benchmark substrates. In several trials, significant advantages of organic carbonates were found. In contrast to DMS…

PharmacologyGreen chemistryChemistryOrganic ChemistryAsymmetric hydrogenationEnantioselective synthesisGreen Chemistry TechnologyStereoisomerismCatalysisSubstrate SpecificityAnalytical Chemistrychemistry.chemical_compoundCarbonic AcidDrug DiscoveryPropylene carbonateSolventsOrganic chemistryRhodiumHydrogenationOrganic ChemicalsSolvent effectsAcetonitrileChirality (chemistry)SpectroscopyPhosphineChirality
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Oral metamizol (1 g and 2 g) versus ibuprofen and placebo in the treatment of lower third molar surgery pain: randomised double-blind multi-centre st…

1998

Objective: To assess the efficacy of metamizol 1 g and 2 g in the relief of pain after surgical extraction of the lower third molar, and to compare the therapeutic effect with that of ibuprofen 600 mg or placebo.

PharmacologyMolarmedicine.medical_specialtybusiness.industryorganic chemicalsAnalgesicTherapeutic effectGeneral MedicinePlaceboIbuprofenSurgerylaw.inventionClinical trialRandomized controlled triallawOral administrationAnesthesiamedicinePharmacology (medical)businessmedicine.drugEuropean Journal of Clinical Pharmacology
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