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Zioga, Georgia. "Studies on the reaction of pyrrolobenzodiazepines with nucleophiles". Thesis, University of Portsmouth, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298374.
Pełny tekst źródłaNarayanaswamy, Mathangi. "An Assay combining HPLC and MS to Evaluate the DNA-Interaction of Pyrrolobenzodiazepines (PBDs) with Oligonucleotides". Thesis, University College London (University of London), 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509315.
Pełny tekst źródłaNandigam, Harika. "Capability of the Tumor Microenvironment to Attract a Precursor of B-cells and Dendritic Cells from Bone Marrow". Ohio University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1307108043.
Pełny tekst źródłaSöderström, Gunilla. "On the combustion and photolytic degradation products of some brominated flame retardants". Doctoral thesis, Umeå University, Chemistry, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-107.
Pełny tekst źródłaMany modern products, especially electronic goods, are protected by brominated flame retardants (BFR). Some of the most common flame retardants are polybrominated diphenylethers (PBDE), tetrabromobisphenol-A (TBBP-A) and hexabromocyclododecane (HBCD). These compounds have been found in environmental samples and shown to have physiological effects on experimental animals. This thesis considers end-of-life aspects of brominated flame retardants. When spread in the environment, these compounds may be degraded into other forms. For example, if sludge contaminated with PBDE is used as an agricultural fertilizer, the PBDE could be degraded by sunlight to species of PBDE with lower degree of bromination and, to some extent, also form polybrominated dibenzofurans (PBDF). In addition, PBDF and polybrominated dibenzo-p-dioxins (PBDD) are formed during combustion of brominated flame retardants. When waste products with brominated flame retardants are co-combusted with household waste or other chlorinated fuel, polybrominated- chlorinated dibenzo-p-dioxins (PBCDD) and polybrominated- chlorinated dibenzofurans (PBCDF)will be formed. The bromin/chlorine composition of dioxins and furans is dependent on the bromine/chlorine ratio in the fuel, but the types of brominated flame retardants that are being combusted is less important. In the studies reported here, bromine levels higher than "normal" for household waste has been used. The results show that there is a pronounced increase in total dioxin levels in fluegas when when bromine is present, implying that waste containing brominated flame retardants should only be incinerated at combustion plants with effecient air pollution control devices.
Maxwell, Megan Amanda, i n/a. "PEX1 Mutations in Australasian Patients with Disorders of Peroxisome Biogenesis". Griffith University. School of Biomolecular and Biomedical Science, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040219.100649.
Pełny tekst źródłaMaxwell, Megan Amanda. "PEX1 Mutations in Australasian Patients with Disorders of Peroxisome Biogenesis". Thesis, Griffith University, 2004. http://hdl.handle.net/10072/366184.
Pełny tekst źródłaThesis (PhD Doctorate)
Doctor of Philosophy (PhD)
School of Biomolecular and Biomedical Sciences
Full Text
Löfstrand, Karin. "Trends and exposure of naturally produced brominated substances in Baltic biota - with focus on OH-PBDEs, MeO-PBDEs and PBDDs". Doctoral thesis, Stockholms universitet, Institutionen för material- och miljökemi (MMK), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-54421.
Pełny tekst źródłaAt the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 3: In press. Paper 4: Manuscript.
Ortuño, García Nuria. "Descomposición térmica de residuos de aparatos eléctricos y electrónicos: estudio cinético y formación de contaminantes". Doctoral thesis, Universidad de Alicante, 2014. http://hdl.handle.net/10045/41605.
Pełny tekst źródłaHroch, Martin. "Studium distribuce halogenovaných difenyletherů do složek životního prostředí". Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2012. http://www.nusl.cz/ntk/nusl-233346.
Pełny tekst źródłaKhan, Simeen. "Colloidal PbS and PbS/CdS Core/Shell Nanosheets". Bowling Green State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1447955111.
Pełny tekst źródłaVondráčková, Ilona. "Zhodnocení obsahu PCB a PBDE v rostlinných bioindikátorech". Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2009. http://www.nusl.cz/ntk/nusl-216534.
Pełny tekst źródłaCrosse, John D. "PBDEs in predatory birds from the UK". Thesis, Lancaster University, 2012. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.658319.
Pełny tekst źródłaSasaki-Skopp, Amanda. "Development of a Culturally Responsive PBIS Toolkit". Thesis, University of Oregon, 2018. http://hdl.handle.net/1794/23097.
Pełny tekst źródłaKhan, Anastassiya. "Synthesis and characterization of defective PBAs electrode material". Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21015/.
Pełny tekst źródłaBakari, Heather. "Evaluation of an Elementary PBIS Bully Prevention Program". TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1329.
Pełny tekst źródłaMoreira, Bastos Patricia. "Comparison of experimentally and theoretically determined oxidation and photochemical transformation rates of some organohalogens to promote prediction of persistence". Doctoral thesis, Stockholms universitet, Institutionen för miljökemi, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-26040.
Pełny tekst źródłaPhillips, Terrie Davis. "Teacher Assessments of Positive Behavior Support in School". ScholarWorks, 2014. https://scholarworks.waldenu.edu/dissertations/24.
Pełny tekst źródłaSundvall, Börje, i Linda Johansson. "Metodutveckling för analys av PBDE och HBCD i sediment". Thesis, Halmstad University, School of Business and Engineering (SET), 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-870.
Pełny tekst źródłaBrominated flame retardants (BFRs) has for many years been used in products to reduce their
flammability, mainly in electronic products, textiles and construction materials.
In 2003, Sweden imported 300 tons of brominated flame retardants.
Leakage of these compounds has polluted natural environments. Fishes has shown increased
contents of these substances, especially fat fish, since brominated flame retardants tends to
accumulate in fatty tissues.
They are also regarded as persistent and that gives them the ability to travel long distances.
What also is really scary is that increased levels of brominated flame retardants have been
detected in human breast milk.
The knowledge of the brominated flame retardants is limited and not so much research has been
done in this field. There are many reasons though, to keep the research going. Partly their
structural resemblance to well-known toxics as PCB, but also their ability to accumulate in
biological systems and enrich in food chains.
In which way they affect humans we really don’t know yet. Experiments on mice have been done
and behavioural disturbances were observed as well as a decrease in learning capacity.
The BRFs chosen for this study are hexabromocyclododecan (HBCD) and a polybrominated
diphenyl ether (PBDE) called pentabromodiphenylether (BDE 99).
About 25 % of the flame retardants produced in the world every year, consists of the brominated
ones. If we look at the PBDEs it’s mainly tetrabromodiphenylether (BDE 47),
pentabromodiphenylether (BDE 99), octabromodiphenylether (BDE 205) and
decabromodiphenylether (BDE 209) that are common flame retardants.
As from July 1st 2006, PBDE was forbidden in electric and electronic products (15).
January 1st 2007, a Swedish prohibition concerning the use of BDE-209 was established. BDE-
209 is not allowed on the Swedish market if the content of substance exceed 0,1 percent of weight
(23).
BDE-99 is classified as environmentally dangerous and a healthrisk. It´s not only toxic for
waterliving organisms but also for humans if exposed during a long time (19).
We shall develop a well functioning, reproducible and economic method to analyse HBCD and
PBDE in sediment. It includes extraction, cleanup and sample analyses with a ECD (electron
capture detector) equipped capillary gas chromatograph.
Several analyses of adequate diluted standards has been analysed in a GC-ECD to find suitable
temperature gradients. Then we produced spiked sediment samples with known amounts of
standards. To homogenize the spiked samples we used a mixer. As a first step in the extraction we
used acetone as a solvent. Then we used cyclohexane and NaCl (2%) to separate the nonpolar and
polar substances from each other. Cleanup with concentrated sulphuric acid was done and for
some samples we also used Florisil. To concentrate the extract it was evaporated with N2(g).The
extract was then analysed in a GC-ECD and then the results was compared with the standards.
The result of this project showed that our method of extraction is useful. We managed to extract
50 % HBCD, 30 % BDE-99 and 60 % BDE-99 (dried sediment).
Muenhor, Dudsadee. "Polybrominated diphenyl ethers (PBDEs) in indoor and outdoor environments". Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/2854/.
Pełny tekst źródłaVondráčková, Ilona. "Studium průniku PBDE a perfluorovaných sloučenin do vodních ekosystémů". Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2015. http://www.nusl.cz/ntk/nusl-233409.
Pełny tekst źródłaAnnunciação, Daniel Luiz Rodrigues da. "Éteres difenílicos polibromados (PBDE) em sedimentos do Lago Paranoá, DF". reponame:Repositório Institucional da UnB, 2017. http://repositorio.unb.br/handle/10482/24184.
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Esse estudo buscou investigar a ocorrência de PBDE em sedimentos do Lago Paranoá - DF. Para tanto, um método analítico foi desenvolvido, validado e aplicado para determinação de nove congêneres (BDE-28, BDE-47, BDE-66, BDE-85, BDE-99, BDE-100, BDE-138, BDE-153 e BDE-154) em amostras de sedimento. O método consistiu na extração sólido-líquido assistida por ultrassom, seguido de etapas de clean-up e análise por cromatografia gasosa com detecção por captura de elétrons. O método se mostrou seletivo, linear (R > 0,9967), tendo valores de LOD (0,03 a 0,32 ng g-1 ) e LOQ (0,1 a 1,1 ng g-1 ) compatíveis com níveis de PBDE encontrados na literatura, recuperações entre 87,7±6,6% (BDE-138) e 98,7±1,4% (BDE-28) e boa precisão. Sete amostras de sedimento do Lago Paranoá foram investigadas onde foi possível verificar níveis de PBDE variando entre 0,143±0,005 (BDE-28) e 8,1±0,4 ng g-1 (BDE- 66). Níveis mais elevados para ƩPBDE foram observados nas imediações das estações de tratamento de esgoto Sul (19±2 ng g-1 ) e Norte (8,79±0,03 ng g-1 ), corroborando com o papel do lançamento de esgotos como uma das principais fontes de aporte de PBDE. Verificou-se semelhança entre os perfis de concentração dos congêneres nos sedimentos com a proporção de PBDE na formulação comercial pentaBDE (DE-71). A distribuição dos PBDE no ambiente, estimada pelo modelo de fugacidade do software EQC Model (level 1), sugeriu sua presença no ar (0,009 a 0,5 ng m-3 ), no aerossol (0,001 a 0,012 ng m-3 ), na coluna de água (0,004 a 0,2 ng L-1 ), nos sólidos suspensos aquáticos (0,7 a 40,5 ng g-1 ), em solos (0,07 a 4,1 ng g-1 ) e em peixes (0,437 a 24,7 ng g-1 ). Tais resultados foram compatíveis com aqueles descritos na literatura para estes compartimentos. Estimou-se, por meio do software EQC Model, um aporte de cerca de 220 toneladas de PBDE para o Lago Paranoá. A concentração de PBDE na água intersticial dos sedimentos foi estimada e comparada com valores de PNEC (predicted no-effect concentration) indicando provável risco a biota referente aos congêneres (BDE-47, BDE-66 e BDE-99) e evidenciado a necessidade de maiores investigações. Para a coluna de água, esta abordagem não evidenciou risco provavelmente em função da elevada hidrofobicidade dos PBDE aliada à sua tendência à bioconcentração. Este trabalho é um dos primeiros registros da presença de PBDE em sedimentos coletados no Brasil, servindo com suporte à geração de indicadores de ii qualidade mais autênticos com o cenário atual, à medida que as informações sobre a presença de PBDE em vários compartimentos ambientais ainda são escassos em nosso país.
This study investigated the occurrence of PBDE in sediments of Paranoá Lake, in the Brazilian Federal District. An analytical method was developed, validated and applied for the determination of nine congeners (BDE-28, BDE-47, BDE-66, BDE-85, BDE-99, BDE-100, BDE- BDE-154) in sediment samples. The method was based on ultrasonic solid-liquid extraction, followed by clean-up and analysis by gas chromatography coupled to electron capture detection. The method was selective, presented good linearity (R > 0.9967) and values of LOD (0.03 to 0.32 ng g-1 ) and LOQ (0.1 to 1.1 ng g-1 ) compatible with PBDE levels of found elsewhere. Recoveries were between 87.7 ± 6.6% (BDE-138) and 98.7 ± 1.4% (BDE-28) with good precision. Seven sediment samples from Paranoá Lake were investigated and PBDE levels ranged from 0.143 ± 0.005 (BDE-28) to 8.1 ± 0.4 ng g-1 (BDE-66). Higher levels of ƩPBDE were observed in points located nearby South (19 ± 2 ng g-1 ) and North (8.79 ± 0.03 ng g-1 ) sewage treatment plants, corroborating with the role of wastewater disposal as one of the main sources of PBDE. A similarity between the concentration profiles in sediments and the proportion of PBDE in the commercial pentaBDE formulation (DE-71) was observed. The distribution of PBDEs in the environment, estimated by the fugacity model of the EQC Level 1 software, suggested their presence in the air (0.009 a 0.5 ng m-3 ), in the aerosol (0.001 a 0.012 ng m-3 ), at the water column (0.004 a 0.2 ng L-1 ), at the aquatic suspended solids (0.7 a 40.5 ng g-1 ), in soils (0.07 a 4.1 ng g-1 ) and in fishes (0.437 a 24.7 ng g-1 ). These results were comparable with those described in the literature for these compartments. It was estimated, through the EQC Model software, a contribution of about 220 tons of PBDE to Lake Paranoá. The concentration of PBDE in the interstitial water was estimated and compared to predicted no-effect concentration (PNEC) values indicating a probable risk for the congeners (BDE-47, BDE-66 and BDE-99) as well as evidencing the need for further investigations. Risk was not evidenced for the water column probably due to the high hydrophobicity of the PBDEs and their tendency for bioconcentration. This work is one of the first reports of the presence of PBDE in sediments collected in Brazil, supporting the generation of more authentic quality indicators considering the current scenario, as the information about the presence of PBDE in several environmental compartments is still scarce in our country.
Mauch, Abbey L. "PBIS Strategies and Support After Training: A Follow-Up Study". Miami University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=miami1562157130532644.
Pełny tekst źródłaChikh, Amirouche. "Étude des mélanges PHBV/PBS et des mélanges hybrides PHBV/PBS/sépiolite : préparation, caractérisation physico-mécanique et durabilité". Thesis, Lorient, 2018. http://www.theses.fr/2018LORIS496/document.
Pełny tekst źródłaThe main objective of this work was to study the structure-properties relationships of biopolymerblends based on poly (3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and polybutylene succinate (PBS). The work was devised into three parts. The first part was devoted to the study of the properties of PHBV/PBS blends prepared by melt compounding at different weight ratio in terms of morphology and properties. The results obtained were discussed in terms of properties and compared with the neat polymers. The second part was devoted to the study of compatibility of PHBV/PBS blends aiming to improve the interactions at the interface between the two components. The effects of both sepiolite (5% wt.) and PHBV-g-MA (5% wt.) were studied in terms of properties. The results showed a synergistic effect between the compatibilizer PHBV-g-MA and the nanofiller sepiolite though an increase in thermal, mechanical and rheological properties. The last part dealing with the recyclability of PHBV/PBS through the study of the effects of repeated extrusion cycles on the properties of materials. The results showed that after 6 reprocessing cycles the thermo-mechanical degradation of PHBV is significantly reduced in the presence of PBS
Bourkou, Mohamed Elhaddi. "Les retardateurs de flammes bromés : effet sur les concentrations d'hormones thyroidiennes chez la femme enceinte". Mémoire, Université de Sherbrooke, 2010. http://savoirs.usherbrooke.ca/handle/11143/4050.
Pełny tekst źródłaSubedi, Kamal. "Synthesis and Characterization of PbS Nano Sheets". Bowling Green State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1403097151.
Pełny tekst źródłaLiyanage, Geethika Kaushalya. "Infrared Emitting PbS Nanocrystals through Matrix Encapsulation". Bowling Green State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1403953924.
Pełny tekst źródłaLeopold, Matthew. "Förster Resonance Energy Transfer in PbS Films". Bowling Green State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1408656943.
Pełny tekst źródłaJežková, Zuzana. "Komplexní zhodnocení výkonnosti společnosti PBS Industry, a.s". Master's thesis, Vysoká škola ekonomická v Praze, 2010. http://www.nusl.cz/ntk/nusl-76097.
Pełny tekst źródłaGonçalves, Renato Miani. "Poluentes orgânicos persistentes (POPs) em toninhas, Pontoporia blainvillei (Mammalia: Cetacea), coletadas no complexo estuarino-lagunar de Cananéia-Iguape, Sudeste do Brasil". Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/21/21133/tde-20042012-101302/.
Pełny tekst źródłaForty eight samples of subcutaneous fat (blubber) of Pontoporia blainvillei were analyzed for the quantitation of persistent organic pollutants (POPs). This marine mammal lives in the estuarine complex of Cananéia-Iguape, São Paulo-BR. The average concentration values of POPs was: PCBs (1532 ng g-1); DDTs (537 ng g-1); Chlordanes (64.0 ng g-1); PBDEs (38.4 ng g-1); Mirex (30.7 ng g-1); Drins (25.2 ng g-1); HCB (9.51 ng g-1); HCHs (7.59 ng g-1) e Endosulfan (6.22 ng g-1). Adult male were those with the highest concentrations of POPs. The DDT/PCBs ratio was equal to 0.35, showing an increase in concentration of PCBs in this area (compared with earlier studies). The concentrations of POPs were different (except for HCH) for mature males and immature males. Between males mature and immature females, the data were significantly (except for DDT and mirex) equal. Between immature males and immature females, data groups were significantly equal for all POPs. Moderate correlation was found between POPs and age, as well as strong correlation between PCB x PBDE, PCB x DDT and PBDE x DDT.
Letcher-Boeve, Debra Dennet. "Positive Behavior Intervention and Supports (PBIS) and School Culture| A Mixed Method Study on the Effects of Implementation of PBIS in an Urban K-8 School". Thesis, Concordia University Irvine, 2017. http://pqdtopen.proquest.com/#viewpdf?dispub=10601909.
Pełny tekst źródłaSchool culture develops as staff members interact with each other, the students, and the community. It becomes the guide for behavior shared among members of the school at large. School culture is a self-repeating cycle; culture is shaped by the interactions of the personnel, and the actions of the personnel become directed by culture (Hinde, 2004). The culture of a school can be a positive influence on student learning or it can inhibit the functioning of the school. Stakeholders in any environment prefer to be in a situation that is appealing and welcoming. When students attend school, the expectation is that it is a place where they like to be, a place that offers support and encouragement, and a place where physical comfort levels are optimal (MacNeil, Prater, & Busch, 2009). Research indicates school culture plays a significant role in educational reform efforts (Gruenert & Whitaker, 2015).
This study investigated how perceptions of teachers, support staff, and administrators affect school culture and academic achievement, and aimed to define how Social-Emotional Learning (SEL) impacts school culture. The data collected and the statistical tests performed included Correlations, a Mann-Whitney Test, and a One-way Analysis of Variance (ANOVA). The SCS-FF Open-ended responses were coded and synthesized, and interviews with six certificated employees were coded and categorized into nine themes divided into four meta-codes. Lack of implementation with fidelity and consistent progress monitoring of the PBIS program suggests that there is a lack of cohesiveness shared among staff members at XYZ K-8 School. Consistent expectations for all stakeholders, set forth by administration, emerged as imperative to program success and a positive school culture.
Rydén, Andreas. "Synthesis of organobromines as a tool for their characterisation and environmental occurrence assessment". Doctoral thesis, Stockholms universitet, Institutionen för material- och miljökemi (MMK), 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-95649.
Pełny tekst źródłaAt the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 2: Manuscript. Paper 3: Submitted. Paper 4: Manuscript.
Buettner, Denise A. "The Effect of PBIS on the School Environment and Test Scores". Thesis, Lindenwood University, 2013. http://pqdtopen.proquest.com/#viewpdf?dispub=3598020.
Pełny tekst źródłaSince the beginning of the Positive Behavior Interventions and Support (PBIS) program in the Study School District there has not been an evaluation of its effectiveness in reducing student discipline referrals and student suspensions and its success in promot-ing a positive learning environment leading to improved academic achievement.
This study determined the effectiveness of the Positive Behavior Interventions System (PBIS) in the Study School District. It focused on determining the fidelity and consistency of implementation of PBIS in the District, the effect of PBIS on reduction of office discipline referrals and student suspensions from school, teacher attitudes toward implementation of PBIS, teacher morale since inception of PBIS, and parent perceptions of the effectiveness of PBIS in promoting positive student behavior.
The results of this mixed methods study determined that there was a difference in the number of office discipline referrals during the four years since implementation of PBIS. The study also determined there was a difference in the percentage of referrals in the three major types of categories of office discipline referrals; school regulations, violent, and nonviolent. When the study analyzed the standardized test scores grades third through seventh and high school, did not evidence a measureable difference in student academic achievement based on ISAT performance during the four years following the implementation of PBIS. However, eighth grade did evidence a measureable difference in student academic achievement. Finally, the study determined there was not a measureable positive perception by staff and parents of PBIS with the exception of one statement on a Likert Scale survey.
Chow, Ka Lai. "Combined photocatalysis and phytoremediation for efficient treatment of polybromodiphenyl ethers (PBDES)". HKBU Institutional Repository, 2013. https://repository.hkbu.edu.hk/etd_oa/63.
Pełny tekst źródłaCott, Andrew. "An examination of analysis and optimization procedures within a PBSD framework". Manhattan, Kan. : Kansas State University, 2009. http://hdl.handle.net/2097/2318.
Pełny tekst źródłaMistry, Bhavesh V. "Analysis of SEDS proteins and their cognate PBPs in Streptomyces coelicolor". Thesis, Swansea University, 2008. https://cronfa.swan.ac.uk/Record/cronfa42448.
Pełny tekst źródłaOtten, Frank. "Strukturierung und elektrische Eigenschaften von Gasphasen-generierten PbS Nanokristall-Filmen / Structuring and electronic properties of gasphase-generated PbS nanocrystal films". Gerhard-Mercator-Universitaet Duisburg, 2005. http://www.ub.uni-duisburg.de/ETD-db/theses/available/duett-10032005-145159/.
Pełny tekst źródłaMeneses, Lady Virginia Traldi. "Aspectos institucionais, legais, políticos e técnicos para a implementação da Convenção de Estocolmo sobre Poluentes Orgânicos Persistentes: os éteres difenilícos polibromados". Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/6/6134/tde-05052017-100647/.
Pełny tekst źródłaAdditional new Persistent Organic Pollutants (POPs) have been included to the list of Stockholm Convention, in the research exemplified by means of polybrominated diphenyl ethers (PBDEs) which resist degradation, are transported far from their place of release, where they accumulate in terrestrial and aquatic ecosystems and possess toxic properties, since they are classified as endocrine disruptive chemicals. They were used as brominated flame retardants and applied in many articles/consumer products such as electronics, textiles, vehicles, furniture and building materials. The signatories countries must comply with obligations and measures taken by Convention however they are facing many challenges in order to implement them, once few countries submitted the updated National Implementation Plans (NIPs) to the Convention. This research aims at identifying the institutional, legal, technical and politics aspects in order to transpose those measures to the national level, conducting a systematized research of literature on consumer products that may contain c-BDE put in the market besides recycling units of articles upon becoming wastes, consisting of, containing or contaminated with a chemical PBDEs and presenting the experience of two countries in implementing PBDEs actions plans of the NIPs. The comparative case studies was used as the research method, improved by the most different cases and most similar outcomes, designed for two countries as Czech Republic and Sweden, supported by the congruence analyses. Standardized interviews were applied to professionals involved in elaborating and implementing the Stockholm Convention in the countries. The systematized research indicated the increase from 2008 of the scientific number articles related to PBDEs which presented the occurrence of PBDEs in indoor house, office and recycling units dust and air internal and outdoor environments nearby waste electronic and electric equipment recycling units, with human exposure analyses related to and the researches must be continued, accordingly the conclusions. The comparative case studies of two countries revealed the requirement of a complex chemical substances management approach in order to transpose the PBDEs obligations to the national level, including the industrial chemical and environmental legislations, especially on POP-BDEs in products, a integrated institutional arrangement with the scientific institutional support, environmental monitoring programs and chemical control of the spread of POP-BDEs substances present in a number of consumer products put on the market; as the main challenges are the segregation of plastics containing PBDE in order to avoid recycled articles containing PBDEs and the importance of dialogue with the industrial sector in order to identify the PBDEs content in articles in use and to evaluate technology alternatives to PBDEs as well as promote technical capacities to raise awareness of chemicals to importers and private sector. The benefits generated by the Convention implementation are protection on healthy and environmental, the governance improvement, technical assistance promotion, POPs visibility, science and politics integration and the increase of scientific research.
Elfurawi, Umaima. "Optical and electronic properties of PbS colloidal nanocrystals". Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/12542/.
Pełny tekst źródłaGoodenough, M. R. "Electrohydrometallurgical processing of covelite (CuS) and Galena (PbS)". Thesis, Imperial College London, 1987. http://hdl.handle.net/10044/1/38336.
Pełny tekst źródłaUprety, Prakash. "Plasmonic Enhancement in PbS Quantum Dot Solar Cells". Bowling Green State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1403022047.
Pełny tekst źródłaAntu, Antara Debnath. "Morphology and Surface Passivation of Colloidal PbS Nanoribbons". Bowling Green State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1499383746861722.
Pełny tekst źródłaNeupane, Chandra Prasad Neupane. "Time Resolved Optical Spectroscopy of Colloidal PbS Nanosheets". Bowling Green State University / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1530805332385177.
Pełny tekst źródłaPremathilaka, Shashini M. "Synthesis and Optical Properties of Colloidal PbS Nanosheets". Bowling Green State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1561463157379607.
Pełny tekst źródłaSaloniemi, Heini. "Electrodeposition of PbS, PbSe and PbTe thin films /". Espoo [Finland] : Technical Research Centre of Finland, 2000. http://www.vtt.fi/inf/pdf/publications/2000/P423.pdf.
Pełny tekst źródłaHortová, Miluše. "Řízení nákladů v podniku PBS Velká Bíteš, a.s". Master's thesis, Vysoké učení technické v Brně. Fakulta podnikatelská, 2012. http://www.nusl.cz/ntk/nusl-223678.
Pełny tekst źródłaSchrimpel, Michal. "Parovzduchová turbína s využitím přeplňovacích turbodmychadel PBS Turbo". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2008. http://www.nusl.cz/ntk/nusl-227963.
Pełny tekst źródłaDunbar, Michael Nathan. "Identifying Critical Incidents That Helped or Hindered the Sustainment of Positive Behavior Interventions and Supports in Schools (PBIS) with Five Years or more of Implementation in One School Division". Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/98787.
Pełny tekst źródłaDoctor of Education
Identifying Critical Incidents That Helped or Hindered the Sustainment of Positive Behavior Interventions and Supports in Schools (PBIS) with Five Years or more of Implementation in One School Division Michael N. Dunbar General Abstract The purpose of this qualitative study was to identify critical incidents that helped or hindered the sustainment of Positive Behavior Interventions and Supports (PBIS) in schools with five years or more of implementation in one school division. For purposes of this study, critical incidents are those key factors – both positive or negative – that impact the sustainment of PBIS. Educators often times adopt new practices that fail because the root of the concerns were never identified and addressed. PBIS' comprehensive approach to behavior adds value to the school climate, however, there is not much research about sustaining PBIS. The researcher sought to identify these incidents as a means of helping educators sustain PBIS beyond a five-year period. The data from this study could be used to develop guidelines for sustaining PBIS. The researcher interviewed one building-based leadership team member from five different schools to gain an understanding of what constituted sustaining PBIS, key components of fidelity, purpose of the Tiered Fidelity Inventory (TFI) score, and challenges of implementing PBIS with fidelity. This study sought to answer the following research questions: 1. What critical incidents do building-based leadership team members indicate have helped the sustainment of PBIS? 2. What critical incidents do building-based leadership team members indicate have hindered the sustainment of PBIS? Participants of this study included one representative from five different building-based PBIS leadership teams from a school division in the Commonwealth of Virginia. Data were collected and analyzed to determine building-based PBIS leadership team members' perception of what constituted the sustainment of PBIS, connection between a school's TFI score and sustainment, key components of implementing PBIS with fidelity, importance of implementing PBIS with fidelity, most challenging sustainable elements of fidelity, and least challenging sustainable elements of PBIS. The TFI is an assessment tool used to determine the level of fidelity school personnel are applying the core features of PBIS (VTSS, 2018). This research will further contribute to the existing body of literature through a thorough description of critical incidents that have helped or hindered the sustainment of PBIS. Matthews et al. (2013) stated fidelity is the degree to which a new initiative is delivered as intended in order for PBIS to be sustained. This research found a stronger understanding of core components of fidelity needed to be established. Participants also indicated the essentialness of consistency in establishing and utilizing school-wide expectations. Leadership team members emphasized the importance of administrative support from initial stages of implementation through sustainment. In addition, this study found resources to be a vital component to the reward system of PBIS. Participants discussed struggles they endured without proper resources. Continuous training was also designated as critical component of sustaining PBIS. Participants similarly indicated consistent use of data was essential to setting goals and action planning. These identified critical incidents could be used to create guidelines to help educators sustain PBIS beyond a five-year period.
Cazaunau, Mathieu. "Oxydation atmosphérique hétérogène de HAP et de PBDE : cinétique, produits et génotoxicité". Thesis, Bordeaux 1, 2009. http://www.theses.fr/2009BOR13907/document.
Pełny tekst źródłaThis work deals with the heterogeneous degradation of polycyclic aromatic hydrocarbons (PAH) and polybromo diphenyls ethers (PBDE) with various atmospheric oxidants. The reactivity of Benzo[a]pyrene (BaP) and dibenzo[a,l]pyrene (DalP) for PAH and BDE 153 and BDE 209 for PBDE, had been studied when they are adsorbed on a model of mineral particles (silica particles) and exposed to ozone, nitrogen dioxide and hydroxyl radical. Extraction and analyse of compounds were optimised. For all studied reactions, kinetic parameters were obtained following the remaining concentration of compound for different exposure times. Influence of the particle loading and molecular structure on the reactivity had been evaluated and discussed. Identification of the main degradation products was made for the reaction of PAH with nitrogen dioxide and hydroxyl radical and for the reaction of PBDE with hydroxyl radical. Then, the genotoxicity of the particle extracts was made for different exposure times. This study talks about kinetics, mechanistic and genotoxicity
Ferrari, Raíssa Santos. "Quantificação de PBDEs em amostras de sedimentos de Ribeirão Preto e avaliação da toxicidade do BDE-209 em células HepG2 sob influência de indução autofágica". Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/59/59138/tde-17012017-092455/.
Pełny tekst źródłaThe polybrominated diphenyl ethers (PBDEs) are compounds widely used as flame retardants, introduced around 1970, in a diversity of industrial products especially electronics. However, in contrast to its beneficial role as a safety device, these compounds have a chemical structure, which provides to humans worrisome toxic effects, because according to several studies, they are responsible for triggering neurotoxic and hormonal problems, as well as influence in the development of some diseases. Moreover, its chemical composition allows them to be bioaccumulated, which gives potential effects, since they are persistent in the environment. Given these factors, studies that can better describe these compounds action mechanism are important. Therefore, the proposal of this project was to analyze the effect of 2, 2\' ,3, 3\' ,4, 4\' ,5, 5\' ,6, 6\'-decabromodiphenyl ether (BDE-209) using as model the human hepatocellular carcinoma cells, HepG2, applying cytotoxicity assays during autophagic induction. The results showed that BDE-209, as observed in other studies of our group, induced no severe toxicity like other congeners as it showed significant results only in higher concentrations. The autophagic induction had no protective effects against the BDEs cytotoxicity, on the contrary, it was able to affect cells homeostasis and cause necrosis in the presence of 25 mol.L-1 of the congener. Additionally, sediment samples were collected from a recharge point of Guaraní aquifer in Ribeirão Preto for quantification of these compounds to determine the level of contamination in this environment. These samples were analyzed by gas chromatography with electron capture detector (CG-ECD) after a process of extraction, clean up and preconcentration. The results showed the presence of six BDEs with total concentration of 4.03 ng.g-1 and 5.38 ng.g-1 in two samples collected, which the main congener was 2, 2\', 4, 4\' tetrabromodiphenyl ether (BDE-47).
Lundgren, Magnus. "Coxsackievirus B3 Infection and Host Defence Responses Change the Metabolism of PBDE". Doctoral thesis, Uppsala universitet, Institutionen för medicinska vetenskaper, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-108849.
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