Search results for "inorganic chemicals"

showing 10 items of 489 documents

Phosphorous doping and drawing effects on the Raman spectroscopic properties of O=P bond in silica-based fiber and preform.

2012

International audience; We report an experimental study of the doping and drawing effects on the Raman activities of phosphorus (P)-doped silica-based optical fiber and its related preform. Our data reveal a high sensitivity level in the full width at half maximum value of the 1330 cm−1 (O = P) Raman band to the P-doping level. Its increase with the P doping level does not clash with an increase in the disorder of the O = P surrendering matrix. In addition, we observe that in the central core region of the sample (higher doping level), the drawing process decreases the relative band amplitude. We tentatively suggest that this phenomenon is due to the change in the first derivate of the bond…

(060.2310) Fiber optics; (300.6450) Spectroscopy Raman; (160.2750) Glass and other amorphous materials; (060.2280) Fiber design and fabrication; (060.2290) Fiber materials.inorganic chemicalsMaterials scienceOptical fiberAnalytical chemistryChemical vapor depositionlaw.inventionCondensed Matter::Materials Sciencesymbols.namesakeOpticslawPolarizabilityCondensed Matter::SuperconductivityFiber[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]business.industryDopingtechnology industry and agricultureFiber optics Spectroscopy Raman Glass and other amorphous materials Fiber design and fabrication Fiber materialsElectronic Optical and Magnetic MaterialsFull width at half maximumsymbolsbusinessRaman spectroscopyhuman activitiesRaman scattering
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Effect of Selenium Enrichment and Type of Application on Yield, Functional Quality and Mineral Composition of Curly Endive Grown in a Hydroponic Syst…

2019

Selenium (Se) is an essential element for humans&rsquo

0106 biological sciencesinorganic chemicalsFertigationSettore AGR/13 - Chimica Agrariachemistry.chemical_elementSettore AGR/04 - Orticoltura E FloricolturaMineral compositionsoilless culture01 natural sciencesSelenatelcsh:Agriculturebiofortificationchemistry.chemical_compound<i>Cichorium endivia</i>Dry weightYield (wine)lcsh:Sfood and beverages04 agricultural and veterinary sciencesAscorbic acidHydroponicsCichorium endiviaHorticulturenutritionchemistry040103 agronomy & agriculture0401 agriculture forestry and fisheriesascorbic acidAgronomy and Crop ScienceSelenium010606 plant biology & botanyAgronomy
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Effect of Molybdenum Rate on Yield and Quality of Lettuce, Escarole, and Curly Endive Grown in a Floating System

2018

Molybdenum (Mo) is required in enzymes involved in a number of different metabolic processes, and is crucial for the survival of plants and animals. The influence of nutrient solutions containing four levels of molybdenum (0, 0.5, 1.5, and 3.0 &micro

0106 biological sciencesinorganic chemicalsvitamin CSettore AGR/04 - Orticoltura E Floricoltura01 natural scienceslcsh:Agriculturechemistry.chemical_compoundHuman fertilizationNutrientmolybdenumNitratenitrateleafy vegetablesHydroponicChemistryCrop yieldLeafy vegetablelcsh:Shydroponics04 agricultural and veterinary sciencesAscorbic acidHydroponicsHorticultureenzymes and coenzymes (carbohydrates)Plant morphology040103 agronomy & agriculture0401 agriculture forestry and fisheriesbacteriaPlant nutritionAgronomy and Crop Science010606 plant biology & botanyAgronomy
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Melatonin Targets Metabolism in Head and Neck Cancer Cells by Regulating Mitochondrial Structure and Function.

2021

This study was funded by grants from the Ministerio de Economia, Industria y Competitividad y por el Fondo de Desarrollo Regional FEDER, Spain nº SAF2013-49019, SAF2017-85903-P, and from the Consejería de Innovación, Ciencia y Empresa, Junta de Andalucía (P07- CTS- 03135, P10- CTS- 5784, and CTS- 101), Spain. J.F. and L.M. have FPU fellowships from the Ministerio de Educación Cultura y Deporte, Spain. C.R.S. was a schorlarship holder from the Plan Propio de Investigación of the University of Granada.

0301 basic medicine:Phenomena and Processes::Chemical Phenomena::Biochemical Phenomena::Biochemical Processes::Phosphorylation::Oxidative Phosphorylation [Medical Subject Headings]PhysiologyClinical BiochemistrymelatoninMitochondrionBiochemistryMelatonina:Organisms::Eukaryota::Animals::Chordata::Vertebrates::Mammals::Primates::Haplorhini::Catarrhini::Hominidae::Humans [Medical Subject Headings]0302 clinical medicine:Anatomy::Cells::Cells Cultured::Cell Line [Medical Subject Headings]head and neck cancer cells:Phenomena and Processes::Physiological Phenomena::Pharmacological Phenomena::Drug Resistance::Drug Resistance Neoplasm [Medical Subject Headings]MitophagyMitocondriasChemistryapoptosisglycolysisOXPHOSmitochondria030220 oncology & carcinogenesishormones hormone substitutes and hormone antagonistsmedicine.drug:Phenomena and Processes::Chemical Phenomena::Biochemical Phenomena::Biochemical Processes::Carbohydrate Metabolism::Glycolysis [Medical Subject Headings]Neoplasias de cabeza y cuello:Diseases::Neoplasms::Neoplasms by Site::Head and Neck Neoplasms [Medical Subject Headings]:Chemicals and Drugs::Inorganic Chemicals::Free Radicals::Reactive Oxygen Species [Medical Subject Headings]Mitofagiafree radicalsOxidative phosphorylationArticleMelatonin03 medical and health sciencesmedicine:Phenomena and Processes::Cell Physiological Phenomena::Cell Physiological Processes::Cell Growth Processes::Cell Proliferation [Medical Subject Headings]Molecular BiologyRadicales libresCell growth:Chemicals and Drugs::Amino Acids Peptides and Proteins::Proteins::DNA-Binding Proteins::Receptors Cytoplasmic and Nuclear::Receptors Melatonin [Medical Subject Headings]:Chemicals and Drugs::Chemical Actions and Uses::Pharmacologic Actions::Therapeutic Uses::Antineoplastic Agents [Medical Subject Headings]lcsh:RM1-950:Anatomy::Cells::Cellular Structures::Subcellular Fractions::Mitochondria [Medical Subject Headings]Cell Biologymedicine.diseaseHead and neck squamous-cell carcinoma:Phenomena and Processes::Cell Physiological Phenomena::Cell Physiological Processes::Cell Death::Apoptosis [Medical Subject Headings]Glucólisis030104 developmental biologylcsh:Therapeutics. PharmacologymitophagyApoptosisCancer cellCancer research:Chemicals and Drugs::Hormones Hormone Substitutes and Hormone Antagonists::Hormones::Melatonin [Medical Subject Headings]
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The Interplay between Genes and Psychosocial Home Environment on Physical Activity

2018

Introduction Genetic factors contribute to individual differences in physical activity, but it remains uncertain whether the magnitude of the genetic effects is modified by variations in home environments. We aimed to examine to what extent the psychosocial home environment in childhood and adolescence modifies the genetic influences on leisure time physical activity in young adulthood. Methods Participants were Finnish twins (N = 3305) who reported their leisure time physical activity at age 24 yr. The psychosocial home environment was assessed by twins at ages 12, 14, and 17 yr, as well as by their parents when the twins were age 12 yr. Gene–environment interaction modeling was performed …

0301 basic medicineParentsDevelopmental psychology0302 clinical medicineSurveys and QuestionnairesOrthopedics and Sports Medicine030212 general & internal medicineLongitudinal StudiesGene–environment interactionta315Childta515Finlandexerciseta3142twinsFamily Relationsgeneettiset tekijätPsychologyPsychosocialfyysinen aktiivisuusinorganic chemicalsAdolescentlongitudinalPhysical activityMEDLINEPhysical Therapy Sports Therapy and Rehabilitationpsykososiaaliset tekijätpitkittäistutkimushome atmospherecomplex mixturesArticle03 medical and health sciencesFamily relationsLeisure ActivitiesHumansExercisechildhoodnuoret aikuisetkaksostutkimusHome environmentExtramuralfungilapsuusequipment and suppliesTwin studykotiympäristökaksoset030104 developmental biologybacteriaGene-Environment Interactionadolescence
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Prenatal Ambient Air Pollution, Placental Mitochondrial DNA Content, and Birth Weight in the INMA (Spain) and ENVIRONAGE (Belgium) Birth Cohorts

2016

The research leading to these results was funded by the Spanish Ministry of Health (FIS-PI11/00610, FIS-PI041436, FIS-PI081151, FIS-PI042018, and FIS-PI09/02311), the European Union (EU) (FP7-ENV-2011 cod 282957 and HEALTH.2010.2.4.5-1), the Instituto de Salud Carlos III (Red INMA G03/176, CB06/02/0041, FIS-FEDER 03/1615, 04/1509, 04/1112, 04/1931, 05/1079, 05/1052, 06/1213, 07/0314, 09/02647, 11/01007, 11/02591, CP11/00178, FIS-PI06/0867, and FIS-PS09/00090), the Conselleria de Sanitat Generalitat Valenciana, the Generalitat de Catalunya-CIRIT (1999SGR 00241), the Obre Social Cajastur, the Universidad de Oviedo, the Department of Health of the Basque Government (2005111093 and 2009111069),…

0301 basic medicinePediatrics:Phenomena and Processes::Physiological Phenomena::Body Constitution::Body Weights and Measures::Body Size::Body Weight::Birth Weight [Medical Subject Headings]:Phenomena and Processes::Physiological Phenomena::Physiological Processes::Growth and Development::Morphogenesis::Embryonic and Fetal Development::Fetal Development [Medical Subject Headings]Health Toxicology and MutagenesisPlacentaEspañaPhysiology:Diseases::Pathological Conditions Signs and Symptoms::Pathologic Processes::Growth Disorders::Fetal Growth Retardation [Medical Subject Headings]ADN mitocondrial010501 environmental sciencesMitochondrion01 natural sciencesFetal DevelopmentBélgicaPregnancyBirth Weightskin and connective tissue diseasesPeso al nacerNews | Science SelectionsMitocondrias:Phenomena and Processes::Reproductive and Urinary Physiological Phenomena::Reproductive Physiological Phenomena::Reproductive Physiological Processes::Reproduction::Pregnancy [Medical Subject Headings]:Anatomy::Cells::Cellular Structures::Intracellular Space::Cytoplasm::Cytoplasmic Structures::Organelles::Mitochondria [Medical Subject Headings]2. Zero hunger:Geographicals::Geographic Locations::Europe::Spain [Medical Subject Headings]Air PollutantsAmbient air pollutionAire -- ContaminacióFemenino3. Good healthmedicine.anatomical_structureMaternal ExposureFemaleBirth cohort:Health Care::Environment and Public Health::Public Health::Environmental Pollution::Air Pollution [Medical Subject Headings]Mitochondrial DNAmedicine.medical_specialtyModelos LinealesEmbarazoBirth weightInfants -- DesenvolupamentBiology:Chemicals and Drugs::Inorganic Chemicals::Gases::Nitrogen Oxides::Nitrogen Dioxide [Medical Subject Headings]DNA Mitochondrial:Phenomena and Processes::Genetic Phenomena::Genetic Structures::Genome::Genome Components::Genes::Genes Mitochondrial [Medical Subject Headings]03 medical and health sciencesAir pollutantsPlacentaAir PollutionmedicineHumans:Geographicals::Geographic Locations::Europe::Belgium [Medical Subject Headings]:Analytical Diagnostic and Therapeutic Techniques and Equipment::Investigative Techniques::Epidemiologic Methods::Statistics as Topic::Models Statistical::Linear Models [Medical Subject Headings]Contaminación del aire0105 earth and related environmental sciencesRetardo del crecimiento fetal:Chemicals and Drugs::Nucleic Acids Nucleotides and Nucleosides::Nucleic Acids::DNA::DNA Circular::DNA Mitochondrial [Medical Subject Headings]Genes mitocondrialesPregnancyPublic Health Environmental and Occupational HealthDesarrollo fetalmedicine.disease:Anatomy::Embryonic Structures::Placenta [Medical Subject Headings]030104 developmental biology:Check Tags::Female [Medical Subject Headings]13. Climate actionSpainsense organsDióxido de nitrógeno
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Arsenic exposure, diabetes-related genes and diabetes prevalence in a general population from Spain.

2018

Inorganic arsenic exposure may be associated with diabetes, but the evidence at low-moderate levels is not sufficient. Polymorphisms in diabetes-related genes have been involved in diabetes risk. We evaluated the association of inorganic arsenic exposure on diabetes in the Hortega Study, a representative sample of a general population from Valladolid, Spain. Total urine arsenic was measured in 1,451 adults. Urine arsenic speciation was available in 295 randomly selected participants. To account for the confounding introduced by non-toxic seafood arsenicals, we designed a multiple imputation model to predict the missing arsenobetaine levels. The prevalence of diabetes was 8.3%. The geometric…

0301 basic medicineinorganic chemicalsAdultMaleRiskDiabetes riskHealth Toxicology and MutagenesisPopulationPhysiologychemistry.chemical_elementUrine010501 environmental sciencesToxicology01 natural sciencesArsenicalsArticleArsenic03 medical and health scienceschemistry.chemical_compoundYoung AdultDiabetes mellitusDiabetes MellitusOdds RatioPrevalenceMedicineHumanseducationArsenic0105 earth and related environmental scienceseducation.field_of_studyintegumentary systembusiness.industryConfoundingGeneral MedicineOdds ratioEnvironmental ExposureMiddle Agedmedicine.diseasePollution030104 developmental biologychemistrySeafoodSpainEnvironmental PollutantsFemaleArsenobetainebusinessEnvironmental pollution (Barking, Essex : 1987)
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Optimization of Bacillus cereus Fermentation Process for Selenium Enrichment as Organic Selenium Source

2020

Selenium is an essential trace element and micronutrient for human health. Application of organic selenium in plants and microorganisms as trace element supplement is attracting more and more attention. In this study, Bacillus cereus, an important probiotic, was used for selenium enrichment with sodium selenite as selenium source. The growth curve of B. cereus was investigated, and 150 μg/ml was selected as the concentration of selenium for B. cereus fermentation. With application of response surface methodology, the optimal fermentation conditions were obtained as follows: inoculation quantity of 7%, culture temperature of 33°C, and shaking speed of 170 rpm, leading to the maximal selenium…

0301 basic medicineinorganic chemicalsEndocrinology Diabetes and MetabolismMicroorganismBacillus cereusselenium enrichmentchemistry.chemical_element030209 endocrinology & metabolismlcsh:TX341-641response surface methodology03 medical and health sciences0302 clinical medicineBacillus cereusFood sciencefermentationchemistry.chemical_classification030109 nutrition & dieteticsNutrition and DieteticsbiologyTrace elementfood and beveragesMicronutrientbiology.organism_classificationorganic seleniumchemistryCereusFermentationSelenoproteinlcsh:Nutrition. Foods and food supplySeleniumFood ScienceFrontiers in Nutrition
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Histidine tracts in human transcription factors: insight into metal ion coordination ability

2017

Consecutive histidine repeats are chosen both by nature and by molecular biologists due to their high affinity towards metal ions. Screening of the human genome showed that transcription factors are extremely rich in His tracts. In this work, we examine two of such His-rich regions from forkhead box and MAFA proteins—MB3 (contains 18 His) and MB6 (with 21 His residues), focusing on the affinity and binding modes of Cu2+ and Zn2+ towards the two His-rich regions. In the case of Zn2+ species, the availability of imidazole nitrogen donors enhances metal complex stability. Interestingly, an opposite tendency is observed for Cu2+ complexes at above physiological pH, in which amide nitrogens part…

0301 basic medicineinorganic chemicalsMaf Transcription Factors LargeStereochemistryMetal ions in aqueous solutionPeptideNerve Tissue Proteins010402 general chemistry01 natural sciencesBiochemistryInorganic ChemistryMetal03 medical and health scienceschemistry.chemical_compoundCoordination ComplexesAmideImidazoleHomeostasisHumansHistidineAmino Acid SequenceTranscription factorHistidineLigand bindingchemistry.chemical_classificationOriginal PaperMass spectrometryForkhead Transcription FactorsHydrogen-Ion ConcentrationPeptide Fragments0104 chemical sciencesZinc030104 developmental biologyBinding affinitychemistryvisual_artPeptidevisual_art.visual_art_mediumThermodynamicsHuman genomeCopperProtein BindingJournal of Biological Inorganic Chemistry
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The Use of Frozen-Thawed Platelet-Derived Phospholipids as a Confirmatory Test for the Diagnosis of Lupus Anticoagulants. Comparison with Two Commerc…

1999

Lupus anticoagulants (LAs) belong to acquired circulating anticoagulants interfering with phospholipid-dependent coagulation tests. Owing to the remarkable variability among patients, SSC guidelines recommend more than one test to detect and confirm the presence of LAs. However, this is an expensive procedure and greatly raises the work load of the laboratory. A standardised platelet-derived phospholipid preparation was obtained and platelet neutralisation (PNP) procedures with APTT and DRVVT reagents were performed on plasmas from 16 patients with LAs and from 41 control subjects. In comparisons, STAclot-PNP and DVVconfirm clotting assays were conducted. PNP by using APTT or DRVVT reagents…

AdultBlood PlateletsMaleinorganic chemicalsAdolescentmedicine.drug_classCoefficient of variationCoagulation testingHumansMedicineheterocyclic compoundsPlateletPhospholipidsAgedBlood coagulation testCryopreservationLupus anticoagulantChromatographySystemic lupus erythematosusbusiness.industryAnticoagulantHematologyMiddle Agedmedicine.diseaseControl subjectsenzymes and coenzymes (carbohydrates)Freeze DryingLupus Coagulation InhibitorImmunologyFemaleBlood Coagulation TestsbusinessThrombosis Research
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