87 research outputs found
Quasi-elastic and inelastic inclusive electron scattering from an oxygen jet target
The results of an experiment on inclusive electron scattering from an oxygen
jet target, performed in a wide range of energy and momentum transfer covering
both quasi-elastic and (1232) resonance regions, are reported. In the
former region the theoretical predictions, obtained including effects of
nucleon-nucleon correlations in both initial and final states, give a good
description of the experimental data. In the inelastic region a broadening as
well as a damping of the resonant part of the cross section with respect to the
free nucleon case is observed. The need of more detailed calculations including
nuclear structure effects on the electroproduction cross section of nucleon
resonances is highlighted.Comment: to appear in Nucl. Phys.
Inverse Association between Dietary Iron Intake and Gastric Cancer: A Pooled Analysis of CaseâControl Studies of the Stop Consortium
Background: Inconsistent findings have been reported regarding the relationship between dietary iron intake and the risk of gastric cancer (GC). Methods: We pooled data from 11 caseâcontrol studies from the Stomach Cancer Pooling (StoP) Project. Total dietary iron intake was derived from food frequency questionnaires combined with national nutritional tables. We derived the odds ratios (ORs) and 95% confidence intervals (CIs) for quartiles of dietary iron through multivariable unconditional logistic regression models. Secondary analyses stratified by sex, smoking status, caloric intake, anatomical subsite and histological type were performed. Results: Among 4658 cases and 12247 controls, dietary iron intake was inversely associated with GC (per quartile OR 0.88; 95% CI: 0.83â0.93). Results were similar between cardia (OR = 0.85, 95% CI = 0.77â0.94) and nonâcardia GC (OR = 0.87, 95% CI = 0.81â0.94), and for diffuse (OR = 0.79, 95% CI = 0.69â0.89) and intestinal type (OR = 0.88, 95% CI = 0.79â0.98). Iron intake exerted an independent effect from that of smoking and salt intake. Additional adjustment by meat and fruit/vegetable intake did not alter the results. Conclusions: Dietary iron is inversely related to GC, with no difference by subsite or histological type. While the results should be interpreted with caution, they provide evidence against a direct effect of iron in gastric carcinogenesis. © 2022 by the authors. Licensee MDPI, Basel, Switzerland.This study was supported by the Fondazione AIRC per la Ricerca sul Cancro, Project no. 21378 (Investigator Grant). The Unidade de Investigação em EpidemiologiaâInstituto de SaĂșde PĂșblica da Universidade do Porto (EPIUnit; UIDB/04750/2020) and the LaboratĂłrio para a Investigação Integrativa e Translacional em SaĂșde Populacional (ITR; LA/P/0064/2020) were funded by the Foundation for Science and TechnologyâFCT (Portuguese Ministry of Science, Technology and Higher Education). SM was supported by the project âNEONâPCâNeuroâoncological complications of prostate cancer: longitudinal study of cognitive declineâ (POCIâ01â0145âFEDERâ032358; ref. PTDC/SAUâEPI/32358/2017), which is funded by FEDER through the Operational Programme competitiveness and Internationalization, and national funding from FCT and the EPIUnitâJunior ResearchâProg Financing (UIDP/04750/2020). The authors thank the European Cancer Prevention (ECP) Organization for providing support for the StoP Project meetings and all MCCâSpain study collaborators (CIBERESP, ISCIII, ISGlobal, ICO, University of Huelva, University of Oviedo, University of Cantabria, ibs.Granada, Instituto Salud PĂșblica de Navarra, FISABIO, Murcia Regional Health Authority and cols)
Inverse Association between Dietary Iron Intake and Gastric Cancer: A Pooled Analysis of CaseâControl Studies of the Stop Consortium
Background: Inconsistent findings have been reported regarding the relationship between dietary iron intake and the risk of gastric cancer (GC). Methods: We pooled data from 11 caseâcontrol studies from the Stomach Cancer Pooling (StoP) Project. Total dietary iron intake was derived from food frequency questionnaires combined with national nutritional tables. We derived the odds ratios (ORs) and 95% confidence intervals (CIs) for quartiles of dietary iron through multivariable unconditional logistic regression models. Secondary analyses stratified by sex, smoking status, caloric intake, anatomical subsite and histological type were performed. Results: Among 4658 cases and 12247 controls, dietary iron intake was inversely associated with GC (per quartile OR 0.88; 95% CI: 0.83â0.93). Results were similar between cardia (OR = 0.85, 95% CI = 0.77â0.94) and nonâcardia GC (OR = 0.87, 95% CI = 0.81â0.94), and for diffuse (OR = 0.79, 95% CI = 0.69â0.89) and intestinal type (OR = 0.88, 95% CI = 0.79â0.98). Iron intake exerted an independent effect from that of smoking and salt intake. Additional adjustment by meat and fruit/vegetable intake did not alter the results. Conclusions: Dietary iron is inversely related to GC, with no difference by subsite or histological type. While the results should be interpreted with caution, they provide evidence against a direct effect of iron in gastric carcinogenesis
Comparison of five organic wastes regarding their behaviour during composting: Part 1, biodegradability, stabilization kinetics and temperature rise
Occurrence, Distribution, and Ecological Risk of Fluoroquinolones in Rivers and Wastewaters
The use of fluoroquinolones for the treatment of infections in humans and animals has increased in Argentina, and they can be found in large amounts in water bodies. The present study investigated the occurrence and associated ecological risk of 5 fluoroquinolones in rivers and farm wastewaters of San Luis, Santa Fe, CĂłrdoba, Entre RĂos, and Buenos Aires provinces of Argentina by high-performance liquid chromatography coupled to fast-scanning fluorescence detection and ultraâhigh-performance liquid chromatography coupled to triple quadrupole mass spectrometry detection. The maximum concentrations of ciprofloxacin, enrofloxacin, ofloxacin, enoxacin, and difloxacin found in wastewater were 1.14, 11.9, 1.78, 22.1, and 14.2 ÎŒg Lâ1, respectively. In the case of river samples, only enrofloxacin was found, at a concentration of 0.97 ÎŒg Lâ1. The individual risk of aquatic organisms associated with water pollution due to fluoroquinolones was higher in bacteria, cyanobacteria, algae, plants, and anurans than in crustaceae and fish, with, in some cases, risk quotients >1. The proportion of samples classified as high risk was 87.5% for ofloxacin, 63.5% for enrofloxacin, 57.1% for ciprofloxacin, and 25% for enoxacin. Our results suggest that the prevalence of fluoroquinolones in water could be potentially risky for the aquatic ecosystem, and harmful to biodiversity.Fil: Teglia, Carla Mariela. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de BioquĂmica y Ciencias BiolĂłgicas. Laboratorio de Desarrollo AnalĂtico y QuimiometrĂa; ArgentinaFil: Perez, Florencia Antonella. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de BioquĂmica y Ciencias BiolĂłgicas. Laboratorio de Desarrollo AnalĂtico y QuimiometrĂa; ArgentinaFil: Michlig, NicolĂĄs. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de IngenierĂa QuĂmica. Programa de InvestigaciĂłn y AnĂĄlisis de Residuos y Contaminantes QuĂmicos; ArgentinaFil: Repetti, MarĂa Rosa. Universidad Nacional del Litoral. Facultad de IngenierĂa QuĂmica. Programa de InvestigaciĂłn y AnĂĄlisis de Residuos y Contaminantes QuĂmicos; ArgentinaFil: Goicoechea, Hector Casimiro. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de BioquĂmica y Ciencias BiolĂłgicas. Laboratorio de Desarrollo AnalĂtico y QuimiometrĂa; ArgentinaFil: Culzoni, Maria Julia. Consejo Nacional de Investigaciones CientĂficas y TĂ©cnicas. Centro CientĂfico TecnolĂłgico Conicet - Santa Fe; Argentina. Universidad Nacional del Litoral. Facultad de BioquĂmica y Ciencias BiolĂłgicas. Laboratorio de Desarrollo AnalĂtico y QuimiometrĂa; Argentin
The pp elastic scattering analyzing power measured with the polarized beam and the unpolarized target between 1.98 and 2.80 GeV
Improvement in the Safety of Use of Hand Dishwashing Liquids Through the Addition of Hydrophobic Plant Extracts
Compostage de digestat de méthanisation
International audienceAnaerobic digestion of organic wastes is encouraged by European regulation. It allows energy supply and recycling of organic matter and nutrients. But digestates are not fully stabilized, are rich in ammonium which can lead to ammonia emissions, and can also be odorous, too wet or too concentrated in phytotoxic volatile fatty acids, preventing a direct land application and agricultural use. Composting can be an adequate post-treatment for digestates as it can stabilize their residual organic matter. The composting behavior of different raw and digested organic wastes was studied in 300-liter pilot in order to study the influence of anaerobic digestion on the composting post-treatment. Total oxygen consumption, temperature rise and nitrogen gaseous emissions were monitored. Three types of wastes were studied: agricultural wastes, source sorted organic fraction of municipal solid wastes and mechanically sorted organic fraction of municipal solid wastes. Anaerobic digestion led logically to a decrease in organic wastes biodegradability: total oxygen consumption measured during composting was divided by three after digestion while temperature rise was limited to a maximum of 40°C for digestates. The conversion of organic nitrogen during digestion led to significant gaseous emissions during the composting of digested wastes. On conclusion, the composting of digestates must be carefully conducted. Indeed their aerobic post-treatment could lead to significant nitrogen emissions: ammonia and nitrous oxide. If it appears necessary to compost anaerobic digestion residues in order to assure their full valorization, the composting process needs to be optimized in order to achieve a minimal environmental impact
Characterization of Solid Digestates: Part 2, Assessment of the Quality and Suitability for Composting of Six Digested Products
International audienceThe aim of this research was to characterize six organic solid digestates in order to discuss their potential direct agricultural utilisation or their further valorization through an aerobic post-treatment. The studied digestates came from four different sources: waste water treatment sludge, food-processing wastes, agricultural solid wastes and source-selected organic fraction of municipal solid wastes. Physico-chemical, biochemical and biological characteristics showed that a direct use of digestates and application on land as soil amendment or fertilizer is not recommended according to current standards. A posttreatment appeared thus to be necessary in order to obtain commercial amendments or fertilizers. A composting posttreatment of these digestates would assure their full biological stabilization as these organic residues still contain residual biodegradability and present sometimes phytotoxic risks. The prediction of operational parameters showed that the composting post-treatment of these digestates will probably lead to a limited rise in temperature, require moderate aeration supply and last less than a typical composting treatment of organic wastes
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