Bibliografie tematiche / Enriched environment

Indice

Articoli di riviste
Tesi
Libri
Capitoli di libri
Atti di convegni
Rapporti di organizzazioni

Letteratura scientifica selezionata sul tema "Enriched environment"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 6 luglio 2024

Cita una fonte nei formati APA, MLA, Chicago, Harvard e in molti altri stili

Scegli il tipo di fonte:

Consulta la lista di attuali articoli, libri, tesi, atti di convegni e altre fonti scientifiche attinenti al tema "Enriched environment".

Accanto a ogni fonte nell'elenco di riferimenti c'è un pulsante "Aggiungi alla bibliografia". Premilo e genereremo automaticamente la citazione bibliografica dell'opera scelta nello stile citazionale di cui hai bisogno: APA, MLA, Harvard, Chicago, Vancouver ecc.

Puoi anche scaricare il testo completo della pubblicazione scientifica nel formato .pdf e leggere online l'abstract (il sommario) dell'opera se è presente nei metadati.

Articoli di riviste sul tema "Enriched environment"

Natali, Fabrizio, Carla Difranco e Roberto Gatti. "Enriched environment or enriched therapy? Time for clarification". Physiotherapy Theory and Practice 36, n. 11 (12 ottobre 2020): 1175–78. http://dx.doi.org/10.1080/09593985.2020.1827706.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Nore??a, Arnaud Jean, e Sylviane Chery-Croze. "Enriched acoustic environment rescales auditory sensitivity". NeuroReport 18, n. 12 (agosto 2007): 1251–55. http://dx.doi.org/10.1097/wnr.0b013e3282202c35.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Butrimienë, Edita, e Nida Stankevièienë. "Enrichment of the educational environment with information and communication technologies: State of art at the Faculty of Pharmacy of Kaunas University of Medicine". Medicina 44, n. 2 (28 novembre 2006): 156. http://dx.doi.org/10.3390/medicina44020020.

Testo completo

Abstract (sommario):

Both traditional and new educational environments, the latter enriched with information and communication technologies, coexist in today’s university. The goal of this article is to present the concept of educational environment enriched with information and communication technologies, to reveal the main features of such environment, and to present the results of certain investigation on the application of information technologies in teaching/learning processes at the Faculty of Pharmacy of Kaunas University of Medicine. The discussion object of this paper is the educational environment enriched with information and communication technologies. In designing the environments of this type, positive aspects of traditional teaching models are being developed by integrating them into the new educational environment. The concept of educational environment enriched with information and communication technologies is reviewed in the first part of this paper. The structure and main features of educational environments enriched with information and communication technologies are highlighted in the second part. The results of the study on the application of information technologies in teaching/learning processes at the Faculty of Pharmacy of Kaunas University of Medicine are presented in the third part.

Gli stili APA, Harvard, Vancouver, ISO e altri

Beattie, V. E., N. Walker e I. A. Sneddon. "Effects of Environmental Enrichment on Behaviour and Productivity of Growing Pigs". Animal Welfare 4, n. 3 (agosto 1995): 207–20. http://dx.doi.org/10.1017/s0962728600017802.

Testo completo

Abstract (sommario):

AbstractThis study examined the effects of enriching the environment on the behaviour and productivity of pigs, in an attempt to assess changes in welfare. A total of 102 pigs were housed in either barren or enriched housing from birth to slaughter. The barren environments were defined as intensive housing and the enriched environments incorporated extra space, an area which contained peat and straw in a rack. Enriching the environment reduced both the amount of time pigs spent inactive and the time involved in harmful social and aggressive behaviour. Tail biting was absent from the enriched environment but four pigs were removed from barren pens with severe tail damage. Pigs housed in enriched environments spent longer durations in exploratory behaviour than those in barren housing, and young pigs in enriched environments performed locomotory behaviour more frequently than their counterparts in barren environments. Overall growth rates were similar in both treatments. These results indicate that welfare is improved by enrichment with substrates and suggest that barren pens should be modified to provide these facilities.

Gli stili APA, Harvard, Vancouver, ISO e altri

Mkwanazi, M. V., A. T. Kanengoni e M. Chimonyo. "Pen enrichment and sex interaction on growth performance and metabolite concentrations of autochthonous Windsnyer pigs kept in a high stocking density". Canadian Journal of Animal Science 98, n. 4 (1 dicembre 2018): 826–32. http://dx.doi.org/10.1139/cjas-2018-0019.

Testo completo

Abstract (sommario):

The objective of the study was to determine the interaction of pen enrichment and sex on growth performance and blood metabolite concentrations of Windsnyer pigs. Forty-eight growing Windsnyer pigs of both sexes, with an average initial body weight of 21.6 (±9.01) kg were used. Daily feed intake and weekly body weights for each pen were measured. Blood was collected at the end of the experiment. Pen environment did not affect average daily feed intake (ADFI) and average daily gain. There was a pen environment and sex interaction on ADFI. Females in barren pens had higher ADFI than enriched females but ADFI in barren and enriched pens was similar for male pigs. Pigs in enriched environment were more efficient in converting feed into body weight than those in barren environment. There was an interaction of pen environment and sex on glucose, blood urea nitrogen (BUN), and alkaline phosphatase. Enriched males had higher albumin than males in barren environment. Enriched females had higher BUN than females in barren environment. It was concluded that enriched Windsnyer pigs housed at a density of 0.39 m2 per pig, particularly females, perform better than those in barren environments.

Gli stili APA, Harvard, Vancouver, ISO e altri

González Fleitas, María F., Julián D. Devouassoux, Marcos L. Aranda, Juan S. Calanni, Monica S. Chianelli, Damián Dorfman e Ruth E. Rosenstein. "Enriched environment provides neuroprotection against experimental glaucoma". Journal of Neurochemistry 152, n. 1 (21 ottobre 2019): 103–21. http://dx.doi.org/10.1111/jnc.14885.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Crawford, L. E., L. E. Knouse, M. Kent, D. Vavra, O. Harding, D. LeServe, N. Fox et al. "Enriched environment exposure accelerates rodent driving skills". Behavioural Brain Research 378 (gennaio 2020): 112309. http://dx.doi.org/10.1016/j.bbr.2019.112309.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Wang, Juan, Longyi Shao e Xuetian Wang. "The Coal-Forming Environment at the End of the Late Permian and Its Control on Trace Elements: The Upper Xuanwei Formation in Eastern Yunnan, China". Processes 11, n. 10 (9 ottobre 2023): 2936. http://dx.doi.org/10.3390/pr11102936.

Testo completo

Abstract (sommario):

Forming environments have important effects on the dispersion and enrichment of trace elements in coal. The C3 coal seam of the Xuanwei Formation in eastern Yunnan was used as a case study to reconstruct the peat-forming environment based on coal facies parameters and geochemical characteristics, and its influence on trace element (including rare earth elements and yttrium, REY) enrichment was investigated. The C3 coal was classified as medium rank bituminous coal with an ultra-low moisture content, medium-high ash yield, and medium-low volatile content. Compared to the average values for Chinese coal, Cu and V were enriched and Co was slightly enriched in the C3 coal. Compared with the average values for world coal, Cu and V were enriched while several other trace elements were slightly enriched in the C3 coal, including Co, Hf, Nb, Sc, Ta, Zn, and Zr. The C3 coal was deposited in the limno-telmatic environment with fresh water, and reducing conditions. Trace elements, including Cu, V, Hf, Nb, Sc, Ta, Zr, Zn, Co, and REY, were typically enriched in the limno-telmatic environment with fresh water and reducing conditions. Additionally, REY and V were also significantly enriched in brackish water limno-telmatic conditions with the same depositional environment.

Gli stili APA, Harvard, Vancouver, ISO e altri

Grońska-Pęski, Marta, J. Tiago Gonçalves e Jean M. Hébert. "Enriched Environment Promotes Adult Hippocampal Neurogenesis through FGFRs". Journal of Neuroscience 41, n. 13 (26 febbraio 2021): 2899–910. http://dx.doi.org/10.1523/jneurosci.2286-20.2021.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Rosenstein, RuthE, MaríaF González Fleitas e Damián Dorfman. "A novel viewpoint in glaucoma therapeutics: enriched environment". Neural Regeneration Research 17, n. 7 (2022): 1431. http://dx.doi.org/10.4103/1673-5374.330594.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Più fonti

Tesi sul tema "Enriched environment"

Kuric, Enida. "The Impact of Enriched environment on Lipid metaboilsm after Experimental Stroke". Thesis, Mälardalen University, Mälardalen University, Department of Biology and Chemical Engineering, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-6530.

Testo completo

Abstract (sommario):

Stroke is the major cause of serious long-term disability with a sufficient acute treatment for only a very limited number of patients. Limited recovery of neurological functions occurs and can be elevated by a permissive post-stroke milieu. Housing animals in an enriched environment modulates regenerative mechanisms in the nonischemic peri-infarct area which might be an attractive target for pharmacological treatments to promote recovery.

Upon ischemia, cellular lipids are released due to massive cell damage and free lipids significantly contribute to the progression of acute and delayed cell death. The aim of this study was to evalute the effect of enriched environment on lipid metabolism. In particular we characterize the activation of the transcription factor liver X receptor (LXR) in glial scar formation and regulation of cholesterol balance of relevance for functional recovery following stroke. Brain tissues from animals subjected to permanent occlusion of middle cerebral artery (pMCAo) were analysed for LXRα and β protein expression. We found an upregulation and an increased transcriptional activity of LXRβ in the peri-infarct area of rats housing in an enriched environment following pMCAO. Our data anticipate that enriched environment may have positive effects on lipid recycling in the ischemic hemisphere following experimental stroke.

Gli stili APA, Harvard, Vancouver, ISO e altri

Rönnbäck, Annica. "The effect of enriched environment on gene expression and stroke recovery". Doctoral thesis, Umeå University, Public Health and Clinical Medicine, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-278.

Testo completo

Abstract (sommario):

Stroke is the third leading cause of death and the major course of long-term disabilities in industrialized countries. Most surviving stroke patients show some degree of spontaneous recovery, but persistent symptoms in sensorimotor and cognitive functions are common. The symptoms can be reproduced in experimental stroke models in rats by occlusion of the middle cerebral artery. Housing rats in an enriched environment (EE), i.e. group housing in a large cage with toys that are changed daily, increases neuronal plasticity in healthy rats and can also improve functional recovery after experimental stroke.

The present thesis investigates the effect of EE on the recovery of sensorimotor and cognitive functions one month after focal cerebral ischemia in rats, with emphasis on the underlying molecular mechanisms. Furthermore, EE-induced effect on gene expression in healthy rats was investigated after different periods of EE-housing and at different time points of the day.

We show an improved recovery of both sensorimotor and cognitive functions in rats housed in EE for one month after focal cerebral ischemia. The recovery of sensorimotor function correlated significantly to mRNA expression of the plasticity associated transcription factors NGFI-A and NGFI-B in hippocampus and cortical regions outside the infarct. Social interaction seems to be an important component for the beneficial effects of EE after focal cerebral ischemia. Microarray analysis of hippocampal gene expression after one month of postischemic environmental enrichment revealed no confirmable EE-induced changes that could explain the improved recovery in spatial memory. Interestingly, healthy rats housed in EE showed increased mRNA expression of NGFI-A and Krox-20 exclusively during the dark period of the day compared to rats housed in isolation. In addition, EE housed rats had a substantial diurnal variation in NGFI-A, Krox-20 and NGFI-B mRNA expression; this was absent in single-housed rats. EE-induced changes in gene expression are more evident during the dark period of the day, when rats are more active and can benefit from the stimulating environment. This is important to consider in future investigation of putative mediators of the EE-induced neuronal plasticity.

In summary, these findings may contribute to an increased understanding of the underlying molecular mechanisms behind improved functional recovery in rats housed in enriched environment after focal cerebral ischemia.

Gli stili APA, Harvard, Vancouver, ISO e altri

Pham, Therese M. "Effects of neonatal handling and enriched environment on neurotrophins and cognitive function /". Stockholm, 2000. http://diss.kib.ki.se/2000/91-628-4362-1/.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Adams, Richard. "Connecting and investing : the Senior Sister's role in, and experiences of, an enriched environment". Thesis, University of Sheffield, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.540601.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Dydowicz, Jaroslaw. "The development of TESOL teacher beliefs and knowledge in an ICT-enriched CPD environment". Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/10021752/.

Testo completo

Abstract (sommario):

This thesis investigates the professional development of TESOL teachers during a postgraduate peer-taught course in English Philology at the Pedagogical University in Krakow, Poland. The analysis, conducted on the basis of a Grounded Theory approach, examines how an ICT CPD course influenced the professional development of forty newly-qualified Polish teachers of English as a Foreign Language, who engaged in peer teaching as a central component of the course. The research uncovers and examines teacher beliefs and knowledge in a setting characterised by a high degree of autonomy. The study proposes that the participants, in order to present themselves as competent and self-assured ELT professionals, acted upon the notion of the ‘good teacher’ through both the tacit and the explicit CMC-based negotiation of a collaboratively structured teaching model consistent with their beliefs. In the process of designing ICT-rich English lessons, the participants, guided by their beliefs, ascribed value to subject-specific pedagogical knowledge and skills, foregrounding pedagogy and normalising the technology. The role of autonomy is confirmed as a prerequisite for the kind of practice which supports and enables the pedagogical development of teachers in such an ICT CPD. The thesis offers an original contribution in its presentation of a new construct for understanding teacher belief in the context of technology-related settings. The Technological Pedagogical and Content Beliefs construct (TPACB) attempts to capture the relationship between different types of teacher beliefs, and complements a parallel knowledge construction model - Technological Pedagogical and Content Knowledge – by offering a proposition which illuminates the nature of the interplay of the beliefs relevant to the field of TESOL and other areas of education. In addition, the study proposes a model for an ELT CPD practicum which encourages development in pedagogical knowledge and beliefs while promoting the integration of ICT into practice.

Gli stili APA, Harvard, Vancouver, ISO e altri

Zarif, Peyvandi Hadi. "Modulation de la plasticité hippocampique par l’enrichissement de l’environnement : rôle des lymphocytes T". Thesis, Université Côte d'Azur (ComUE), 2017. http://www.theses.fr/2017AZUR4058/document.

Testo completo

Abstract (sommario):

La plasticité cérébrale est une capacité remarquable des cellules du cerveau à adapter leur structure et fonction en réponse à l’expérience et l’environnement. Cette plasticité cérébrale est favorisée par des conditions de vie favorables qui peuvent être modélisées chez le rongeur par le modèle de l’Environnement Enrichi (EE). L’EE consiste à mettre un grand nombre de souris dans de grandes cages comprenant de nombreux objets (nids, tunnels, roues…) qui sont changés régulièrement. L’EE induit une activité physique volontaire accrue, des conditions optimales pour la stimulation des interactions sociales, du comportement exploratoire et des fonctions cognitives. L’EE exerce des effets bénéfiques sur les processus physiologiques au niveau de nombreux systèmes (hormonal, cardiovasculaire, immunitaire…). L’EE réduit les comportements anxio-dépressifs, améliore l'apprentissage et la mémorisation. Ces effets sont sous-tendus par des changements au niveau du cerveau et en particulier de l’hippocampe, où l’on observe en EE plus de neurogenèse et synaptogenèse. De manière intéressante, chez les souris immunodéficientes, les performances mnésiques et la neurogenèse sont très altérées, suggérant une interaction bidirectionnelle entre le système immunitaire et le cerveau. Parmi les cellules du système immunitaire, les lymphocytes T (LT) semblent jouer un rôle particulièrement important dans les mécanismes de plasticité neuronale. Notre objectif a été de caractériser le rôle des LT dans les effets de l’EE sur la plasticité cérébrale et de chercher si ces effets impliquent une modification des LT par l’EE
Cerebral plasticity is a remarkable ability of brain cells to adapt their structure and function in response to experience and the environment. This cerebral plasticity is enhanced by favorable living conditions that can be modeled in the rodent by the Enriched Environment (EE) model. The EE consists in large number of mice in large cages including numerous objects (nests, tunnels, wheels ...) which are changed frequently. EE induces increased voluntary physical activity, optimal conditions for stimulation of social interactions, exploratory behavior and cognitive functions. EE has beneficial effects on physiological processes in many systems (hormonal, cardiovascular, immune system...). EE reduces anxio-depressive behavior, improves learning and memory. These effects are underpinned by changes in the brain and particularly in the hippocampus, where EE induce more neurogenesis and synaptogenesis. Interestingly, in immunodeficient mice, memory performance and neurogenesis are highly impaired, suggesting a bidirectional interaction between the immune system and the brain. Among the cells of the immune system, T cells appear to play a major role in neuronal plasticity mechanisms. Our objective was to characterize the role of T cells in EE’s effects on cerebral plasticity and to investigate whether these effects imply a modification of T cells by EE

Gli stili APA, Harvard, Vancouver, ISO e altri

Hopson, Michael H. (Michael Hugh). "Effects of a Technology Enriched Learning Environment on Student Development of Higher Order Thinking Skills". Thesis, University of North Texas, 1998. https://digital.library.unt.edu/ark:/67531/metadc279055/.

Testo completo

Abstract (sommario):

The problem for this study was to enhance the development of higher order thinking skills and improve attitudes toward computers for fifth and sixth grade students. The purpose of this study was to determine the impact of a Technology Enriched Classroom on student development of higher order thinking skills and student attitudes toward the computer. A sample of 80 sixth grade and 86 fifth grade students was tested using the Ross Test of Higher Cognitive Processes. The Ross Test was selected because of its stated purpose to judge the effectiveness of curricula or instructional methodology designed to teach the higher-order thinking skills of analysis, synthesis and evaluation as defined by Bloom. The test consisted of 105 items grouped into seven subsections. In addition, the students were surveyed using the Computer Attitude Questionnaire developed by the Texas Center for Educational Technology. The questionnaire assessed sixty-five questions combined to measure eight attitudes.

Gli stili APA, Harvard, Vancouver, ISO e altri

Roomkham, Sirinthip. "Design a simulated multimedia enriched immersive learning environment (SMILE) for nursing care of dementia patient". Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/94175/1/Sirinthip_Roomkham_Thesis.pdf.

Testo completo

Abstract (sommario):

This thesis is to establish a framework to guide the development of a simulated, multimedia-enriched, immersive, learning environment (SMILE) framework. This framework models essential media components used to describe a scenario applied in healthcare (in a dementia context), demonstrates interactions between the components, and enables scalability of simulation implementation. The thesis outcomes also include a simulation system developed in accordance with the guidance framework and a preliminary evaluation through a user study involving ten nursing students and practicioners. The results show that the proposed framework is feasible and effective for designing a simulation system in dementia healthcare training.

Gli stili APA, Harvard, Vancouver, ISO e altri

Woodcock, Elizabeth Ann Psychology Faculty of Science UNSW. "Effects of environmental enrichment on fundamental cognitive processes in rats and humans". Awarded by:University of New South Wales. Psychology, 2004. http://handle.unsw.edu.au/1959.4/20488.

Testo completo

Abstract (sommario):

This thesis examined whether it is possible to enhance core elements of the information processing system with specific forms of environmental stimulation. The first series of experiments demonstrated that a preweaning environmental enrichment procedure that provided 60 minutes of daily multisensory stimulation accelerated the development of long-term contextual memory and enhanced inhibitory processing in young rats. That is, whilst stimulated and non-stimulated rats exhibited long-term memory of a context at 26 days of age, only stimulated rats showed this ability at 18 days of age. In addition, stimulated rats showed a faster rate of extinction of long-term contextual memory at 21 days of age, which was taken as evidence of enhanced inhibitory learning (i.e., context ??? no US) in these rats. Subsequent experiments with adult rats demonstrated that a combination of preweaning multisensory stimulation and postweaning rearing in an enriched environment improved the (1) specificity of long-term contextual memory, (2) speed of contextual information processing, and (3) availability of attentional resources. More specifically, enriched-reared rats demonstrated superior ability to discriminate between two similar contexts in comparison to standard-reared rats. In addition, enriched-reared rats showed superior memory of a context when there was limited time available to form a memory of that context. This finding was taken to indicate that rats that receive environmental enrichment are able to process contextual information more rapidly. Finally, standard-, but not enriched-, reared rats showed less conditioning to a discrete stimulus when it was presented in combination with a stronger stimulus during training compared to when it was presented by itself. The finding that enriched-reared rats did not show this overshadowing effect suggests that these rats have greater availability of attentional resources to divide between two stimuli that are competing for attention. The experiments with rats were followed by two experiments with children that investigated the effects of a computerised cognitive training procedure on information-processing speed. These experiments demonstrated that 30-minutes per weekday of training in rapid decision-making for three to five weeks improved children???s performance on two tests of processing speed (i.e., a choice reaction time and odd-man-out task). In addition, the speeded training improved children???s ability to sustain their attention and inhibit impulsive responses on a continuous performance test (Test of Variables of Attention). The cognitive training procedure had no effect on children???s performance on a measure of fluid intelligence (Raven???s Standard Progressive Matrices). The results of the experiments reported in this thesis suggest that a number of fundamental cognitive processes can be modified by environmental conditions that place increasing demands on the information-processing system. A neurobiological model, focusing on myelin, axon diameter, and the glutamatergic, glucocorticoid, noradrenergic, and cholinergic systems, was proposed in order to explain the observed effects of environmental stimulation on cognition in children and rats. The rationale for attempting to enhance fundamental cognitive processes was that improving these processes should ultimately improve general intellectual functioning. With respect to this aim, the correlational data from the present experiments with children revealed promising trends towards greater improvements on the tests of fundamental cognitive processes in those children in the training group with slower processing speed at the start of the intervention. This finding suggests that cognitive training may be even more effective at enhancing processing speed and other fundamental cognitive processes in children with intellectual impairments???who reportedly have slower processing speed than normal children. However, the extent to which training-related improvements in fundamental cognitive processes generalise to improvements in general cognitive functioning is unclear. That is, there is insufficient evidence that processing speed and other fundamental cognitive processes are causally related to intelligence. It is therefore essential that future cognitive training research is mindful of related developments within the intelligence and information processing literature.

Gli stili APA, Harvard, Vancouver, ISO e altri

Anderson, Kelly King. "Pretend Play at Home: Creating An Educationally Enriched Environment for Emergent Literacy Among Preschool-Aged Children". Diss., CLICK HERE for online access, 2005. http://contentdm.lib.byu.edu/ETD/image/etd962.pdf.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Più fonti

Libri sul tema "Enriched environment"

Renner, Michael J. Enriched and impoverished environments: Effects on brain and behavior. New York: Springer-Verlag, 1987.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Duquette, Georges. An Ethnographic study on language acquisition in a culturally enriched kindergarten environment. Buffalo, NY: State University of New York, 1985.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Solving the medical isotope crisis: Hearing before the Subcommittee on Energy and Environment of the Committee on Energy and Commerce, House of Representatives, One Hundred Eleventh Congress, first session, September 9, 2009. Washington: U.S. G.P.O., 2012.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Renner, Michael J., e Mark R. Rosenzweig. Enriched and Impoverished Environments. New York, NY: Springer New York, 1987. http://dx.doi.org/10.1007/978-1-4612-4766-1.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

United States. Dept. of Energy. Office of Fissile Materials Disposition., a cura di. Implementation plan, disposition of surplus highly enriched uranium environmental impact statement. Washington, DC: Office of Fissile Materials Disposition, U.S. Dept. of Energy, 1995.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

United States. Dept. of Energy. Highly Enriched Uranium Working Group. Highly Enriched Uranium Working Group report on environmental, safety, and health vulnerabilities associated with the Department's storage of highly enriched uranium. Washington, DC: U.S. Dept. of Energy, 1996.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Council, Wildlife Habitat, e United States. Natural Resources Conservation Service, a cura di. Mulching: Mulching enriches and protects soil, helping provide a better growing environment. Washington D.C.]: USDA Natural Resources Conservation Service, 1998.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

United States. Dept. of Energy. Office of Fissile Materials Disposition, a cura di. Disposition of highly enriched uranium obtained from the Republic of Kazakhstan: Environmental assessment. Washington, D.C. (1000 Independence Ave., SW, Washington 20585): Office of Fissile Materials Disposition, U.S. Dept of Energy, 1995.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Douthwaite, Richard. The growth illusion: How economic growth has enriched the few, impoverished the many, and endangered the planet. Dublin: Lilliput, 1992.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Annie, Makhijani, e Institute for Energy and Environmental Research (Takoma Park, Md.)., a cura di. Fissile materials in a glass, darkly: Technical and policy aspects of the disposition of plutonium and highly enriched uranium. 2^a ed. Takoma Park, Md: IEER Press, 1995.

Cerca il testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Più fonti

Capitoli di libri sul tema "Enriched environment"

Breithecker, Dieter. "Enriched Environment – Büroräume als heimliche Bewegungsverführer". In Active Office®, 113–65. Wiesbaden: Springer Fachmedien Wiesbaden, 2018. http://dx.doi.org/10.1007/978-3-658-18478-0_3.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Dari, Biswanath, e Debjani Sihi. "Future of Rice Crop Under Enriched CO2 Environment". In Advances in Crop Environment Interaction, 425–37. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-1861-0_17.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Talhada, Daniela, e Karsten Ruscher. "Performing Enriched Environment Studies to Improve Functional Recovery". In Methods in Molecular Biology, 355–66. New York, NY: Springer US, 2023. http://dx.doi.org/10.1007/978-1-0716-2926-0_24.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Torres, M. O., M. M. R. M. Neto, C. Marques Dos Santos e A. De Varennes. "Lead uptake and distribution in legume species grown on lead-enriched soils". In Fertilizers and Environment, 547–50. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-009-1586-2_96.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Sagar, Sadaraboina Moses Vidya, e Avinash Kumar Agarwal. "Hydrogen-Enriched Compressed Natural Gas: An Alternate Fuel for IC Engines". In Energy, Environment, and Sustainability, 111–34. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-7575-9_6.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Czakiert, T., e W. Nowak. "Kinetics of Coal Char Combustion in Oxygen-Enriched Environment". In Proceedings of the 20th International Conference on Fluidized Bed Combustion, 618–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02682-9_94.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Prasad, Rajesh Kumar, e Avinash Kumar Agarwal. "Laser-Ignited Engine Development for Adaptation to Hydrogen-Enriched Compressed Natural Gas (HCNG)". In Energy, Environment, and Sustainability, 185–211. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-13-3287-6_9.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Dias, Sofia B., José A. Diniz e Leontios J. Hadjileontiadis. "Towards an Enriched LMS for B-Learning Environment: Students’ Profiles". In Intelligent Systems Reference Library, 133–49. Cham: Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-02078-5_9.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Jardim-Goncalves, Ricardo, Adina Cretan, Carlos Coutinho, Moisés Dutra e Parisa Ghodous. "Ontology Enriched Framework for Cloud-based Enterprise Interoperability". In Concurrent Engineering Approaches for Sustainable Product Development in a Multi-Disciplinary Environment, 1155–66. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-4426-7_97.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Johansson, B. B., B. Mattsson e A. L. Ohlsson. "Functional Outcome After Brain Infarction: Effect of Enriched Environment and Amphetamine". In Maturation Phenomenon in Cerebral Ischemia II, 159–67. Berlin, Heidelberg: Springer Berlin Heidelberg, 1997. http://dx.doi.org/10.1007/978-3-642-60546-8_20.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Atti di convegni sul tema "Enriched environment"

Yang, Yan-hua, Neng-yun Deng e Sheng-qin Zhang. "Effects of coal oxygen-enriched combustion on energy saving and environment". In Environment (ICMREE). IEEE, 2011. http://dx.doi.org/10.1109/icmree.2011.5930629.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Poernomo, Iman, e Timur Umarov. "Business Process Development in Semantically-Enriched Environment". In 2008 Fifth International Conference on Information Technology: New Generations (ITNG). IEEE, 2008. http://dx.doi.org/10.1109/itng.2008.237.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Luning Tian, Hanping Chen, Haiping Yang, Xianhua Wang e Shihong Zhang. "Experimental study on the characteristics of coal combustion in oxygen-enriched environments". In Environment (ICMREE). IEEE, 2011. http://dx.doi.org/10.1109/icmree.2011.5930648.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Huang, Cuiting, e Noel Crespi. "Enriched SCIM for Service Composition within IMS Environment". In 2009 International Conference on Management and Service Science (MASS). IEEE, 2009. http://dx.doi.org/10.1109/icmss.2009.5303641.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Aoun, Rosy, Elias A. Doumith e Maurice Gagnaire. "Resource Provisioning for Enriched Services in Cloud Environment". In 2010 IEEE 2nd International Conference on Cloud Computing Technology and Science (CloudCom). IEEE, 2010. http://dx.doi.org/10.1109/cloudcom.2010.43.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Shipkova, Karine, e Irina Zhuravkina. "SPEECH RECOVERY IN APHASIA IN A SENSORY-ENRICHED ENVIRONMENT". In XV International interdisciplinary congress "Neuroscience for Medicine and Psychology". LLC MAKS Press, 2019. http://dx.doi.org/10.29003/m635.sudak.ns2019-15/471-472.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Venot, Tristan, Arthur Desbois, Marie Constance Corsi, Laurent Hugueville, Ludovic Saint-Bauzel e Fabrizio De Vico Fallani. "Exploring strategies for multimodal BCIs in an enriched environment". In 2022 IEEE International Conference on Metrology for Extended Reality, Artificial Intelligence and Neural Engineering (MetroXRAINE). IEEE, 2022. http://dx.doi.org/10.1109/metroxraine54828.2022.9967624.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Wang, Jing, Hanping Chen, Haiping Yang e Shihong Zhang. "Kinetic Characteristics of Coal Char Combustion in Oxygen-Enriched Environment". In 2011 Asia-Pacific Power and Energy Engineering Conference (APPEEC). IEEE, 2011. http://dx.doi.org/10.1109/appeec.2011.5747672.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Xiao, Run, Stephen M. Bergin, Michael A. Caligiuri e Lei Cao. "Abstract 2817: Enriched environment inhibits progression of acute myeloid leukemia". In Proceedings: AACR Annual Meeting 2017; April 1-5, 2017; Washington, DC. American Association for Cancer Research, 2017. http://dx.doi.org/10.1158/1538-7445.am2017-2817.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Fiaidhi, Jinan, Sabah Mohammed, David A. J. Thomas e Lyle F. Chamarette. "Securing AJAX-enriched mobile environment for exchanging SVG-based learning materials". In 2010 Fifth International Conference on Digital Information Management (ICDIM). IEEE, 2010. http://dx.doi.org/10.1109/icdim.2010.5664728.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Rapporti di organizzazioni sul tema "Enriched environment"

Gadd, M. G., J. M. Peter, T. A. Fraser e D. Layton-Matthews. Lithogeochemical and sulphur isotope indicators of environment of formation and genesis of the Moss hyper-enriched black shale showing, Yukon. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2019. http://dx.doi.org/10.4095/313648.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Gadd, M. G., J. M. Peter, T A Fraser e D. Layton-Matthews. Paleoredox and lithogeochemical indicators of the environment of formation and genesis of the Monster River hyper-enriched black shale showing, Yukon. Natural Resources Canada/CMSS/Information Management, 2022. http://dx.doi.org/10.4095/328004.

Testo completo

Abstract (sommario):

Northern Yukon hosts occurrences of Middle Devonian hyper-enriched black shale (HEBS) Ni-Mo-Zn-platinum-group element-Au-Re mineralization, including the Monster River showing in the Ogilvie Mountains. This mineralization has been documented predominantly in the Paleozoic Richardson trough; however, the Monster River showing is atypical, occurring within the Blackstone trough, more than 200 km to the west on the southern margin of the Yukon block. The ambient paleoredox conditions of the marine water column and sediments may be primary controlling factors in HEBS formation. We use major and trace element lithogeochemistry to better understand ambient paleoenvironmental redox conditions through the application of robust redox proxies to HEBS mineralization and host rocks. Uniformly negative Ce anomalies (0.6-0.9) indicate that the water column was predominantly suboxic throughout the deposition interval, even during HEBS mineralization. Although there is a strong terrigenous influence on the rare earth element-yttrium (REE-Y) abundances of the sedimentary rocks, superchondritic Y/Ho ratios (&gt;27) indicate that seawater contributed REE-Y to the host rocks and HEBS. High (&gt;10) authigenic Mo/U ratios indicate that a Fe-Mn particulate shuttle operated in the water column; this is corroborated by negative Ce anomalies and high Y/Ho ratios. The data indicate that metalliferous sedimentary rocks formed by hydrogenous metal enrichment (e.g. Ni, Mo, Pt) caused by ferromanganese oxyhydroxide particulate shuttling as chemical sediments; moreover, the REE- and Mo-based paleoenvironmental indicators suggest a complexly redox-stratified depositional environment with an abundant supply of metals, metalloids, and sulfur.

Gli stili APA, Harvard, Vancouver, ISO e altri

Tetzlaff, Sasha, Jinelle Sperry, Bruce Kingsburg e Brett DeGregorio. Captive-rearing duration may be more important than environmental enrichment for enhancing turtle head-starting success. Engineer Research and Development Center (U.S.), settembre 2021. http://dx.doi.org/10.21079/11681/41800.

Testo completo

Abstract (sommario):

Raising captive animals past critical mortality stages for eventual release (head-starting) is a common conservation tactic. Counterintuitively, post-release survival can be low. Post-release behavior affecting survival could be influenced by captive-rearing duration and housing conditions. Practitioners have adopted environmental enrichment to promote natural behaviors during head-starting such as raising animals in naturalistic enclosures. Using 32 captive-born turtles (Terrapene carolina), half of which were raised in enriched enclosures, we employed a factorial design to explore how enrichment and rearing duration affected post-release growth, behavior, and survival. Six turtles in each treatment (enriched or unenriched) were head-started for nine months (cohort one). Ten turtles in each treatment were head-started for 21 months (cohort two). At the conclusion of captive-rearing, turtles in cohort two were overall larger than cohort one, but unenriched turtles were generally larger than enriched turtles within each cohort. Once released, enriched turtles grew faster than unenriched turtles in cohort two, but we otherwise found minimal evidence suggesting enrichment affected post-release survival or behavior. Our findings suggest attaining larger body sizes from longer captive-rearing periods to enable greater movement and alleviate susceptibility to predation (the primary cause of death) could be more effective than environmental enrichment alone in chelonian head-starting programs where substantial predation could hinder success.

Gli stili APA, Harvard, Vancouver, ISO e altri

Borch, Thomas, Yitzhak Hadar e Tamara Polubesova. Environmental fate of antiepileptic drugs and their metabolites: Biodegradation, complexation, and photodegradation. United States Department of Agriculture, gennaio 2012. http://dx.doi.org/10.32747/2012.7597927.bard.

Testo completo

Abstract (sommario):

Many pharmaceutical compounds are active at very low doses, and a portion of them regularly enters municipal sewage systems and wastewater-treatment plants following use, where they often do not fully degrade. Two such compounds, CBZ and LTG, have been detected in wastewater effluents, surface waters, drinking water, and irrigation water, where they pose a risk to the environment and the food supply. These compounds are expected to interact with organic matter in the environment, but little is known about the effect of such interactions on their environmental fate and transport. The original objectives of our research, as defined in the approved proposal, were to: Determine the rates, mechanisms and products of photodegradation of LTG, CBZ and selected metabolites in waters exposed to near UV light, and the influence of DOM type and binding processes on photodegradation. Determine the potential and pathways for biodegradation of LTG, CBZ and selected metabolites using a white rot fungus (Pleurotusostreatus) and ADP, and reveal the effect of DOM complexation on these processes. Reveal the major mechanisms of binding of LTG, CBZ and selected metabolites to DOM and soil in the presence of DOM, and evaluate the effect of this binding on their photodegradation and/or biodegradation. We determined that LTG undergoes relatively slow photodegradation when exposed to UV light, and that pH affects each of LTG’s ability to absorb UV light, the efficiency of the resulting reaction, and the identities of LTG’sphotoproducts (t½ = 230 to 500 h during summer at latitude 40 °N). We observed that LTG’sphotodegradation is enhanced in the presence of DOM, and hypothesized that LTG undergoes direct reactions with DOM components through nucleophilic substitution reactions. In combination, these data suggest that LTG’s fate and transport in surface waters are controlled by environmental conditions that vary with time and location, potentially affecting the environment and irrigation waters. We determined that P. ostreatusgrows faster in a rich liquid medium (glucose peptone) than on a natural lignocellulosic substrate (cotton stalks) under SSF conditions, but that the overall CBZ removal rate was similar in both media. Different and more varied transformation products formed in the solid state culture, and we hypothesized that CBZ degradation would proceed further when P. ostreatusand the ᵉⁿᶻʸᵐᵃᵗⁱᶜ ᵖʳᵒᶠⁱˡᵉ ʷᵉʳᵉ ᵗᵘⁿᵉᵈ ᵗᵒ ˡⁱᵍⁿⁱⁿ ᵈᵉᵍʳᵃᵈᵃᵗⁱᵒⁿ. ᵂᵉ ᵒᵇˢᵉʳᵛᵉᵈ ¹⁴C⁻Cᴼ2 ʳᵉˡᵉᵃˢᵉ ʷʰᵉⁿ ¹⁴C⁻ᶜᵃʳᵇᵒⁿʸˡ⁻ labeled CBZ was used as the substrate in the solid state culture (17.4% of the initial radioactivity after 63 days of incubation), but could not conclude that mineralization had occurred. In comparison, we determined that LTG does not degrade in agricultural soils irrigated with treated wastewater, but that P. ostreatusremoves up to 70% of LTG in a glucose peptone medium. We detected various metabolites, including N-oxides and glycosides, but are still working to determine the degradation pathway. In combination, these data suggest that P. ostreatuscould be an innovative and effective tool for CBZ and LTG remediation in the environment and in wastewater used for irrigation. In batch experiments, we determined that the sorption of LTG, CBZ and selected metabolites to agricultural soils was governed mainly by SOM levels. In lysimeter experiments, we also observed LTG and CBZ accumulation in top soil layers enriched with organic matter. However, we detected CBZ and one of its metabolites in rain-fed wheat previously irrigated with treated wastewater, suggesting that their sorption was reversible, and indicating the potential for plant uptake and leaching. Finally, we used macroscale analyses (including adsorption/desorption trials and resin-based separations) with molecular- level characterization by FT-ICR MS to demonstrate the adsorptive fractionation of DOM from composted biosolids by mineral soil. This suggests that changes in soil and organic matter types will influence the extent of LTG and CBZ sorption to agricultural soils, as well as the potential for plant uptake and leaching.

Gli stili APA, Harvard, Vancouver, ISO e altri

Rudisill, T. S. Dissolution of Highly Enriched Uranium from the Idaho National Engineering and Environmental Laboratory. Office of Scientific and Technical Information (OSTI), gennaio 2004. http://dx.doi.org/10.2172/821175.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Lindow, Steven, Isaac Barash e Shulamit Manulis. Relationship of Genes Conferring Epiphytic Fitness and Internal Multiplication in Plants in Erwinia herbicola. United States Department of Agriculture, luglio 2000. http://dx.doi.org/10.32747/2000.7573065.bard.

Testo completo

Abstract (sommario):

Most bacterial plant pathogens colonize the surface of healthy plants as epiphytes before colonizing internally and initiating disease. The epiphytic phase of these pathogens is thus an important aspect of their epidemiology and a stage at which chemical and biological control is aimed. However, little is known of the genes and phenotypes that contribute to the ability of bacteria to grow on leaves and survive the variable physical environment in this habitat. In addition, while genes such as hrp awr and others which confer pathogenicity and in planta growth ability have been described, their contribution to other aspects of bacterial epidemiology such as epiphytic fitness have not been addressed. We hypothesized that bacterial genes conferring virulence or pathogenicity to plants also contribute to the epiphytic fitness of these bacteria and that many of these genes are preferentially located on plasmids. We addressed these hypotheses by independently identifying genes that contribute to epiphytic fitness, in planta growth, virulence and pathogenicity in the phytopathogenic bacterium Erwinia herbicola pv gypsophilae which causes gall formation on gypsophila. This species is highly epiphytically fit and has acquired a plasmid (pPATH) that contains numerous pathogenicity and virulence determinants, which we have found to also contribute to epiphytic fitness. We performed saturation transposon mutagenesis on pPATH as well as of the chromosome of E.h. gypsophilae, and identified mutants with reduced ability to grow in plants and/or cause disease symptoms, and through a novel competition assay, identified mutants less able to grow or survive on leaves. The number and identity of plasmid-borne hrp genes required for virulence was determined from an analysis of pPATH mutants, and the functional role of these genes in virulence was demonstrated. Likewise, other pPATH-encoded genes involved in IAA and cytokinin biosynthesis were characterized and their pattern of transcriptional activity was determined in planta. In both cases these genes involved in virulence were found to be induced in plant apoplasts. About half of avirulent mutants in pPATH were also epiphytically unfit whereas only about 10% of chromosomal mutants that were avirulent also had reduced epiphytic fitness. About 18% of random mutants in pPATH were avirulent in contrast to only 2.5% of random chromosomal mutants. Importantly, as many as 28% of pPATH mutants had lower epiphytic fitness while only about 10% of random chromosomal mutants had lower epiphytic fitness. These results support both of our original hypotheses, and indicate that genes important in a variety of interactions with plant have been enriched on mobile plasmids such as pPATH. The results also suggest that the ability of bacteria to colonize the surface of plants and to initiate infections in the interior of plants involves many of the same traits. These traits also appear to be under strong regulatory control, being expressed in response to the plant environment in many cases. It may be possible to alter the pattern of expression of such genes by altering the chemical environment of plants either by genetic means or by additional or chemical antagonists of the plant signals. The many novel bacterial genes identified in this study that are involved in plant interactions should be useful in further understanding of bacterial plant interactions.

Gli stili APA, Harvard, Vancouver, ISO e altri

Koven, William, Gordon Grau, Benny Ron e Tetsuya Hirano. Improving fry quality, survival and growth in commercially farmed fish by dietary stimulation of thyroid hormone production in premetamorphosing larvae. United States Department of Agriculture, 2004. http://dx.doi.org/10.32747/2004.7695856.bard.

Testo completo

Abstract (sommario):

There is a direct correlation between successful metamorphosis from larvae to post-larvae and the quality of the resultant juveniles or fry. Juvenile quality, in turn, is a major factor influencing fish production level and market price. However, following the profound morphological and physiological changes occurring during metamorphosis, the emerging juveniles in some species characteristically demonstrate heterotrophic growth, poor pigmentation, cannibalism and generally poor survival. The white grouper (Epinephelus aeneus) in Israel and the Pacific threadfin (Polydactylussexfilis) in Hawaii are two promising candidates for mariculture that have high market value but a natural fishery that has sharply declined in recent years. Unfortunately, their potential for culture is severely hampered by variable metamorphic success limiting their production. The main objective was to compare the efficacy and economic viability of dietary or environmental iodine on metamorphic success and juvenile quality in the white grouper and the pink snapper which would lead to improved commercial rearing protocols and increased production of these species both in Israel and the US. The Hawaii Institute of Marine Biology encountered problems with the availability of pink snapper brood stock and larvae and changed to Pacific threadfin or moi which is rapidly becoming a premier aquaculture species in Hawaii and throughout the Indo-Pacific. The white grouper brood stock at the National Center for Mariculture was lost as a result of a viral outbreak following the sudden breakdown of the ozone purification system. In addition, the NCM suffered a devastating fire in the fall of 2007 that completely destroyed the hatchery and laboratory facilities although the BARD project samples were saved. Nevertheless, by studying alternate species a number of valuable findings and conclusions that can contribute to improved metamorphosis in commercially valuable marine species resulted from this collaborative effort. The Israeli group found that exposing white grouper larvae to external TH levels synchronized and increased the rate of metamorphosis. This suggested that sub-optimal synthesis of TH may be a major factor causing size heterogeneity in the larval population and high mortality through cannibalism by their larger more metamorphosed cohorts. Two protocols were developed to enrich the larvae with higher levels of the TH precursor, iodine; feeding iodine enriched Artemia or increasing the level of seawater iodine the larvae are exposed to. Results of accumulated iodine in gilthead seabream larvae indicated that the absorption of iodine from the water is markedly more efficient than feeding iodine enriched Artemia nauplii. Samples for TH, which will be analyzed shortly, will be able to determine if another dietary factor is lacking to effectively utilize surplus tissue iodine for TH synthesis. Moreover, these samples will also clarify which approach to enriching larvae with iodine, through the live food or exposure to iodine enriched seawater is the most efficient and cost effective. The American group found that moi larvae reared in ocean water, which possessed substantially higher iodine levels than those found in seawater well water, grew significantly larger, and showed increased survival compared with well water reared larvae. Larvae reared in ocean water also progressed more rapidly through developmental stages than those in low-iodine well seawater. In collaboration with Israeli counterparts, a highly specific and precise radioimmunoassay procedure for thyroid hormones and cortisol was developed. Taken altogether, the combined Hawaiian and Israeli collaborative research suggests that for teleost species of commercial value, adequate levels of environmental iodine are more determinate in metamorphosis than iodine levels in the live zooplankton food provided to the larvae. Insuring sufficiently high enough iodine in the ambient seawater offers a much more economical solution to improved metamorphosis than enriching the live food with costly liposomes incorporating iodine rich oils.

Gli stili APA, Harvard, Vancouver, ISO e altri

Irving, John S. Environmental Assessment for Use of DOE-Owned High-Assay Low-Enriched Uranium Stored at Idaho National Laboratory. Office of Scientific and Technical Information (OSTI), gennaio 2019. http://dx.doi.org/10.2172/1498074.

Testo completo

Gli stili APA, Harvard, Vancouver, ISO e altri

Way, L., S. West, B. Swift, L. Whatford e C. Rymer. Learnings from the pilot Citizen Science and AMR project. Food Standards Agency, novembre 2023. http://dx.doi.org/10.46756/sci.fsa.axj107.

Testo completo

Abstract (sommario):

Antimicrobial resistance (AMR) is a global societal challenge which can be characterised as a ‘One Health’ problem as it has implications not only for human health but also that of animals, the environment and, ultimately, the economy. Despite the significance of this threat, there remain substantial knowledge gaps in relation to transmission pathways for AMR within the food system, and home-growing is a particularly understudied space. Citizen Science and Antimicrobial Resistance (CSAMR) was a pilot project designed to collate data on the cultivation and food preparation practices of home-growers which could enrich existing knowledge on how AMR bacteria move through the food system. CSAMR sought equally to prove the efficacy of citizen science methodology to contribute to the evidence base in this research area.

Gli stili APA, Harvard, Vancouver, ISO e altri

Desbarats, A. J., e J. B. Percival. Hydrogeochemistry of mine tailings from a carbonatite-hosted Nb-REE deposit, Oka, Quebec, Canada. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331256.

Testo completo

Abstract (sommario):

Environmental impacts associated with the mining of carbonatite deposits are an emerging concern due to the demand for critical metals. This study investigates the chemistry of tailings seepage at the former Saint Lawrence Columbium mine near Oka, Québec, Canada, which produced pyrochlore concentrate and ferroniobium from a carbonatite-hosted Nb-REE deposit. Its objectives are to characterize the mineralogy of the tailings and their pore water and effluent chemistries. Geochemical mass balance modeling, constrained by aqueous speciation modeling and mineralogy, is then used to identify reactions controlling the chemical evolution of pore water along its flow path through the tailings impoundment. The tailings are composed mainly of REE-enriched calcite (82 wt. %), biotite (12 wt. %) and fluorapatite (4 wt. %). Minor minerals include chlorite, pyrite, sphalerite, molybdenite and unrecovered pyrochlore. Secondary minerals include gypsum, barite and strontianite. Within the unsaturated zone, pore water chemistry is controlled by sulfide oxidation and calcite dissolution with acid neutralization. With increasing depth below the water table, pore water composition reflects gypsum dissolution followed by sulfate reduction and FeS precipitation driven by the oxidation of organic carbon in the tailings. Concomitantly, incongruent dissolution of biotite and chlorite releases K, Mg, Fe, Mn, Ba and F, forming kaolinite and Ca-smectite. Cation exchange reactions further remove Ca from solution, increasing concentrations of Na and K. Fluoride concentrations reach 23 mg/L and 8 mg/L in tailings pore water and effluent, respectively. At a pH of 8.3, Mo is highly mobile and reaches an average concentration of 83 µg/L in tailings effluent. Although U also forms mobile complexes, concentrations do not exceed 16 µg/L due to the low solubility of its pyrochlore host. Adsorption and the low solubility of pyrochlore limit concentrations of Nb to less than 49 µg/L. Cerium, from calcite dissolution, is strongly adsorbed although it reaches concentrations (unfiltered) in excess of 1 mg/L and 100 µg/L in pore water and effluent, respectively. Mine tailings from carbonatite deposits are enriched in a variety of incompatible elements with mineral hosts of varying reactivity. Some of these elements, such as F and Mo, may represent contaminants of concern because of their mobility in alkaline tailings waters.

Gli stili APA, Harvard, Vancouver, ISO e altri

Offriamo sconti su tutti i piani premium per gli autori le cui opere sono incluse in raccolte letterarie tematiche. Contattaci per ottenere un codice promozionale unico!