Relevant bibliographies by topics / PCDs

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'PCDs'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "PCDs"

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Quinn, Tyler, Jung-Hyun Kim, Yongsuk Seo, and Aitor Coca. "Comparison of Thermal Manikin Modeling and Human Subjects’ Response During Use of Cooling Devices Under Personal Protective Ensembles in the Heat." Prehospital and Disaster Medicine 33, no. 3 (April 19, 2018): 279–87. http://dx.doi.org/10.1017/s1049023x18000328.

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AbstractIntroductionPersonal protective equipment (PPE) recommended for use in West Africa during the Ebola outbreak increased risk for heat illness, and countermeasures addressing this issue would be valuable.Hypothesis/ProblemThe purpose of this study was to examine the physiological impact and heat perception of four different personal cooling devices (PCDs) under impermeable PPE during low-intensity exercise in a hot and humid environment using thermal manikin modeling and human testing.MethodsSix healthy male subjects walked on a treadmill in a hot/humid environment (32°C/92% relative humidity [RH]) at three metabolic equivalents (METs) for 60 minutes wearing PPE recommended for use in West Africa and one of four different personal cooling devices (PCDs; PCD1, PCD2, PCD3, and PCD4) or no PCD for control (CON). The same ensembles were tested with thermal manikin modeling software in the same conditions to compare the results.ResultsAll PCDs seemed to reduce physiological heat stress characteristics when worn under PPE compared to CON. Both the manikin and human testing provided similar results in core temperature (Tc) and heat sensation (HS) in both magnitude and relationship. While the manikin and human data provided similar skin temperature (Tsk) characterization, Tskestimation by the manikin seemed to be slightly over-estimated. Weight loss, as estimated by the manikin, was under-estimated compared to the human measurement.ConclusionPersonal cooling device use in conjunction with impermeable PPE may be advantageous in mitigating physiological and perceptual burdens of heat stress. Evaluation of PCDs worn under PPE can be done effectively via human or manikin testing; however, Tskmay be over-estimated and weight loss may be under-estimated. Thermal manikin testing of PCDs may provide fast and accurate information to persons recommending or using PCDs with PPE.QuinnT,KimJH,SeoY,CocaA.Comparison of thermal manikin modeling and human subjects’ response during use of cooling devices under personal protective ensembles in the heat.Prehosp Disaster Med.2018;33(3):279–287.
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Palomino-Durand, Carla, Marco Lopez, Frédéric Cazaux, Bernard Martel, Nicolas Blanchemain, and Feng Chai. "Influence of the SolubleInsoluble Ratios of Cyclodextrins Polymers on the Viscoelastic Properties of Injectable ChitosanBased Hydrogels for Biomedical Application." Polymers 11, no. 2 (January 26, 2019): 214. http://dx.doi.org/10.3390/polym11020214.

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Injectable pre-formed physical hydrogels provide many advantages for biomedical applications. Polyelectrolyte complexes (PEC) formed between cationic chitosan (CHT) and anionic polymers of cyclodextrin (PCD) render a hydrogel of great interest. Given the difference between water-soluble (PCDs) and water-insoluble PCD (PCDi) in the extension of polymerization, the present study aims to explore their impact on the formation and properties of CHT/PCD hydrogel obtained from the variable ratios of PCDi and PCDs in the formulation. Hydrogels CHT/PCDi/PCDs at weight ratios of 3:0:3, 3:1.5:1.5, and 3:3:0 were elaborated in a double–syringe system. The chemical composition, microstructure, viscoelastic properties, injectability, and structural integrity of the hydrogels were investigated. The cytotoxicity of the hydrogel was also evaluated by indirect contact with pre-osteoblast cells. Despite having similar shear–thinning and self-healing behaviors, the three hydrogels showed a marked difference in their rheological characteristics, injectability, structural stability, etc., depending on their PCDi and PCDs contents. Among the three, all the best above-mentioned properties, in addition to a high cytocompatibility, were found in the hydrogel 3:1.5:1.5. For the first time, we gained a deeper understanding of the role of the PCDi/PCDs in the injectable pre-formed hydrogels (CHT/PCDi/PCDs), which could be further fine-tuned to enhance their performance in biomedical applications.
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Eljarrat, Ethel. "Effects of Sewage Sludges Contaminated with Chlorinated Aromatic Hydrocarbons on Sludge-Treated Areas (Soils and Sediments)." Scientific World JOURNAL 2 (2002): 1729–33. http://dx.doi.org/10.1100/tsw.2002.880.

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The fate of PCDDs, PCDFs, and PCBs in sewage sludges after different management techniques — such as agricultural application, land restoration, and marine disposal — was studied. Changes observed in the concentrations, in the ratio between PCDD and PCDF levels, and in the isomeric distribution suggest the influence of the sewage sludge on the sludge-treated areas (soils and sediments). Whereas land application techniques seem to produce no serious environmental consequences, marine disposal practices produce considerable increases in the levels of contamination in marine sediments.
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Du, Han, Hu Xu, Yun Zhao, Dan Li, and Yuhong Wang. "Mercury Ions Mediated Phosphorus Containing Carbon Dots as Fluorescent Probe for Biothiols Screening." Nano 13, no. 10 (October 2018): 1850116. http://dx.doi.org/10.1142/s1793292018501163.

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In this study, we report the mercury ions (Hg[Formula: see text]) mediated phosphorus-containing carbon dots (PCDs) as a selective “off–on” fluorescence probe for glutathione (GSH), cysteine (Cys) and homocysteine (Hcys). PCDs obtained by hydrothermal reaction are sensitive to Hg[Formula: see text] ions and its fluorescence can be significantly quenched owing to the electron transfer from the lowest unoccupied molecular orbital (LUMO) of PCDs to Hg[Formula: see text]. Interestingly, the weak fluorescence of Hg[Formula: see text]-mediated PCDs could be gradually recovered with the addition of GSH, Cys and Hcys. This can be attributed to the formation of Hg[Formula: see text]–S complex due to the super affinity of Hg[Formula: see text]–sulfydryl bond. The formation of Hg[Formula: see text]–S complex extremely reduces the oxidation ability of Hg[Formula: see text] that inhibits the electron transfer from LUMO of PCDs to Hg[Formula: see text] and re-opens the native electron transition from LUMO to the highest occupied molecular orbital (HOMO) of PCDs. Thus, the green fluorescence of PCDs is switched on. Furthermore, the present Hg[Formula: see text]-mediated PCDs assay exhibits a high selectivity for GSH, Cys and Hcy and has been successfully used to detect the total biothiols content in human urine samples.
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Ávila-Vitor, Maria Regina do Carmo, and Maria Nivalda de Carvalho-Freitas. "Valores organizacionais e concepções de deficiência: a percepção de pessoas incluídas." Psicologia: Ciência e Profissão 32, no. 4 (2012): 792–807. http://dx.doi.org/10.1590/s1414-98932012000400003.

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O objetivo deste estudo foi verificar, do ponto de vista das pessoas com deficiência (PcDs) inseridas no trabalho, se havia relação entre a percepção que elas tinham dos valores organizacionais e as formas como viam a deficiência no trabalho. O estudo foi realizado em uma empresa referência em inclusão. Foram utilizados o Inventário de Concepções de Deficiência em Situações de Trabalho e o Inventário de Valores Organizacionais. Também foram feitas entrevistas com PcDs, seus gestores e coordenadores do programa de inclusão. Verificou-se que existe uma correlação negativa entre a percepção que as PcDs têm sobre o prestígio e a forma como é vista a normalidade pela empresa, isto é, as PcDs relacionam o prestígio da empresa a uma concepção de deficiência que não as coloca como um desviante de um padrão normal de ser humano. Além disso, foi possível identificar aspectos considerados importantes no processo de inserção de PcDs, como o reconhecimento da inclusão como valor organizacional, a necessidade de adequação das condições de trabalho, o papel das PcDs no processo de inclusão e a importância da convivência com PcDs em um cenário favorável ao seu desempenho.
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Wong, Sophia Isako. "Justice and Cognitive Disabilities." Essays in Philosophy 9, no. 1 (2008): 21–40. http://dx.doi.org/10.5840/eip20089117.

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The question of how to treat people with cognitive disabilities (PCDs) poses an important problem for Rawlsian theories of justice because it is unclear whether PCDs are included within the scope of moral personhood. Rawls’s Standard Solution focuses on nondisabled adults as the fundamental case, while later addressing PCDs as marginal cases. I claim that the Standard Solution has two weaknesses. First, it relies on a dichotomy between nondisabled and disabled that is tenuous and difficult to defend. Second, it makes the theory circular in a vicious way.I argue that Rawls’s theory can be revised so that it solves the problem of how to treat PCDs while avoiding the two weaknesses of the Standard Solution. There are three constraints on any successfully revised Rawlsian theory: 1) it must be resourcist rather than welfarist; 2) it must provide some principled basis for limiting our obligations to PCDs; and 3) it must address the whole range of PCDs, including the most severely disabled individuals.
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Campin, D. N., S. J. Buckland, D. J. Hannah, and J. A. Taucher. "The Identification of Dioxin Sources in an Integrated Wood Processing Facility." Water Science and Technology 24, no. 3-4 (August 1, 1991): 65–74. http://dx.doi.org/10.2166/wst.1991.0463.

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A study was undertaken of the PCDD and PCDF export vectors from a major facility that comprises a bleached kraft pulp mill, paper mills, and previously, a timber processing sawmill. The PCDD and PCDF levels in pulps, untreated effluent, the final effluent, sludges, and discharge to the receiving waters, were studied. The total toxic equivalents were calculated, and the individual PCDD and PCDF profiles showed that there were several contributing sources of dioxins. The various effluent streams that contribute to the final effluent were studied, including the bleached effluent, the other kraft mill effluents, and site effluents from other processing areas. Mass balances of PCDDs and PCDFs from the effluent treatment systems are presented. The paper outlines the use of full PCDD and PCDF profile measurements as a means of identifying the point sources of dioxin contamination from within the facility, and outlines the procedures that are being implemented to control the emission of dioxins in the final effluent.
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Chmil, V. D., O. V. Golokhova, D. Yu Vydrin, and V. I. Kruk. "Relevance of the problem of dioxins and polychlorinated biphenyls (PCBs) determination in baby food products." One Health and Nutrition Problems of Ukraine 52, no. 1 (June 24, 2020): 32–39. http://dx.doi.org/10.33273/2663-9726-2020-52-1-32-39.

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The Aim of the Article. Analysis of the current state of the problem of the dioxins and polychlorinated biphenyls (PCBs) determination in baby food products and the development of sample preparation methods for determining these xenobiotics in food products for infants and young children. Dioxins form a group of structurally and chemically related chlorinated tricyclic oxygen-containing aromatic compounds (congeners), which includes 75 polychlorinated dibenzo-para-dioxins (PCDDs) and 135 polychlorinated dibenzofurans (PCDFs). The most toxic congeners of dioxins, in which chlorine atoms along with other positions are necessarily in 2,3,7,8 positions of benzene rings. Their total number is 17:7 PCDD congeners and 10 PCDF congeners. A group of polychlorinated biphenyls (PCBs) – chlorinated bicyclic aromatic compounds, which consists of 209 different congeners, 12 of which have a spatial and electronic structure and exhibit toxicological properties similar to dioxins, therefore, they are called dioxin-like PCBs (DL-PCBs). In addition, when monitoring food products as a marker, a group of 6 PCBs was selected that did not exhibit dioxin-like toxicity and therefore did not belong to dioxin-like PCBs (NDL-PCBs). Thus, of the total number of 419 PCDDs, PCDFs and PCBs, only 35 are toxicologically significant, therefore, these compounds are subject to control in baby food products. To control the content of the amount of dioxins, the amount of dioxins and DL-PCBs and the amount of NDL-PCBs in foods for infants and children from one to three years in Ukraine, the maximum levels of these compounds on the basis of the order of the Ministry of Health of Ukraine No. 368 of 05/13/2013 were harmonized with the maximum allowable levels in foods for infants and young children in accordance with Commission Regulation (EU) No. 1259/2011. Methods for the analysis of dioxins and PCBs. Two instrumental analysis methods are used to determine dioxins and dioxin-like PCBs in foods for baby food: 1) a combination of high-resolution (capillary) gas chromatography with high-resolution mass spectrometry (GC/MS); 2) a combination of GCHR with tandem mass spectroscopy (GC/MS/MS). High-resolution (capillary) gas chromatography is used to determine non-dioxin-like (marker) PCBs. The stage of sample preparation, including the stages of extraction and purification, is key in determining dioxins and PCBs. Conclusions. The stage of sample preparation using automatic devices (liquid extraction under pressure, an automated extract purification system) and chromatographic columns was developed to further determine the mass concentration of dioxins and PCBs in baby food products. The developed procedures using devices for the automatic extraction and purification of the obtained extracts from baby food samples will make it possible in the future to determine PCDDs/PCDFs, ortho-unsubstituted, mono-ortho-substituted and marker PCBs in one sample. Key Words: dioxins, polychlorinated biphenyls, baby food.
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Wu, Jing, Wenjing Wang, and Zonghua Wang. "Porphin-Based Carbon Dots for “Turn Off–On” Phosphate Sensing and Cell Imaging." Nanomaterials 10, no. 2 (February 14, 2020): 326. http://dx.doi.org/10.3390/nano10020326.

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Porphin-based carbon dots (denoted as PCDs) are prepared through a one-step hydrothermal method by using meso-tetra (4-carboxyphenyl) porphin (TCPP), citric acid, and ethanediamine as precursor. PCDs give rise to the optimal photoluminescence at λex/λem = 375/645 nm, exhibit an excitation-independent property, excellent water solubility, and good biocompatibility, which provide red emission and avoid the autofluorescence as an efficient fluorescent imaging probe. On the other hand, when Eu3+ is added into PCDs, the carboxylate groups located on the surface of PCDs exhibit high affinity to Eu3+, resulting in the fluorescence of PCDs turning off via static quenching. In the presence of phosphate, owing to the strong coordination with Eu3+, the fluorescence of PCDs turns on. Based on this performance, a novel “turn off–on” phosphate sensing system is developed. The detection limit of this sensing system can attain 3.59 × 10−3 μmol L−1. This system has been utilized for the detection of phosphate in real samples successfully, which further demonstrates potential applications in biological diagnostic and environmental analysis.
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Craig, Kate, and Ruth Glover. "CPD for PCDs." Vital 1, no. 2 (February 2004): 32. http://dx.doi.org/10.1038/vital079.

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Dissertations / Theses on the topic "PCDs"

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Silva, Joice de Oliveira Epif?nio da. "A inser??o de pessoas com defici?ncia no mercado de trabalho: os sentidos da Lei de Cotas para os gestores de Recursos Humanos da regi?o metropolitana do Rio de Janeiro." Universidade Federal Rural do Rio de Janeiro, 2017. https://tede.ufrrj.br/jspui/handle/jspui/2456.

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Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior - CAPES
Law No. 8213/91, known as the Quota Law was formulated as a tool to implement the National Policy on Employment Dues for Persons with Disabilities. This law today is one of the main means for the insertion of PCDs (Persons with Disabilities) into the labor market. However, the implementation of this law occurs in the face of some difficulties, such as accessibility, for example, in addition to prejudice regarding PCDs in the social environment, which ultimately interferes with its effectiveness. The purpose of this paper is to understand the meanings attributed to the Quota Law by HR Managers who act or have acted in organizations that apply the Quota Law. In order to achieve this goal, nine interviews were conducted, of which eight interviews were conducted with managers, some of whom were in full exercise until the date of the interview, and others who had recently left the organization in which they performed HR functions, and was also interviewed the coordinator of the State Nucleus for Assistance to the Disabled (NEAD). Besides the interviews, this work made use of the technique of observation and the analysis of the collected material occurred through the Nuclei of Meaning. The results show that the managers interviewed still perceive the Quota Law as a merely punitive Law, however, they understand the Quota Law also, as an important one, if not unique, tool for the insertion of PCDs into the labor market. With this, it can be said that the meanings that managers attribute to the Quota Law are loaded with prejudice and the way the Quota Law is signified by these managers reflects in the way they execute this Law, and it can be affirmed that the issue is cultural.
A lei n? 8213/91, conhecida como Lei de Cotas foi formulada como ferramenta para implementar a Pol?tica Nacional de Cotas Empregat?cias para Portadores de Defici?ncia. Esta lei hoje ? um dos principais meios para a inser??o das PCDs (Pessoas com Defici?ncia) no mercado de trabalho. Contudo, a implementa??o desta lei ocorre diante de algumas dificuldades, como a acessibilidade, por exemplo, al?m do preconceito no que tange ?s PCDs no meio social, o que acaba interferindo na efetividade da mesma. Este trabalho tem como objetivo, compreender os sentidos atribu?dos ? Lei de Cotas pelos Gestores de RH que atuam, ou atuaram, em organiza??es que se aplica a Lei de Cotas. Para atingir este objetivo foram realizadas nove entrevistas, sendo oito entrevistas realizadas com gestores, dos quais alguns estavam em pleno exerc?cio da fun??o at? a data da entrevista e outros que haviam sa?do recentemente da organiza??o em que exercia a fun??o de gestor de RH, e ainda, foi entrevistada a coordenadora do N?cleo Estadual de Atendimento ao Deficiente (NEAD). Al?m das entrevistas este trabalho fez uso da t?cnica de observa??o e a an?lise do material levantado ocorreu por meio dos N?cleos de Significa??o. Os resultados mostram que os gestores entrevistados ainda percebem a Lei de Cotas como uma Lei meramente punitiva, entretanto, entendem a Lei de Cotas tamb?m, como uma importante, sen?o ?nica, ferramenta para a inser??o das PCDs no mercado de trabalho. Com isso, pode-se afirmar que os sentidos que os gestores atribuem a Lei de Cotas s?o carregados de preconceito e a forma como a Lei de Cotas ? significada por esses gestores reflete na forma como executam essa Lei, e ainda, pode-se afirmar que a quest?o ? cultural
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Xu, Weiguang. "Risk assessment of dietary exposure to PCDD/PCDFs, DL-PCBs and NDL-PCBs of Hong Kong residents." HKBU Institutional Repository, 2012. https://repository.hkbu.edu.hk/etd_ra/1407.

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Matos, Norberto. "Os desafios da capacitação técnica das Pessoas com Deficiência (PcDs) no mercado de trabalho: um estudo de caso CEFET-RJ." Universidade Federal Fluminense, 2017. https://app.uff.br/riuff/handle/1/4108.

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Apesar do relativo avanço no sentido de manter a igualdade entre os cidadãos, a sociedade brasileira ainda não atende às necessidades específicas de alguns grupos, como: idosos, enfermos, crianças, gestantes e pessoas com deficiência (PcDs). Porém, no caso das PcDs, atualmente existem leis que visam incluí-las no mercado de trabalho, o que vem contribuindo para a sua contratação. Este trabalho objetivou investigar os principais desafios encontrados no processo de capacitação de PcDs pertencentes ao quadro efetivo do Centro Federal de Educação Tecnológica Celso Suckow da Fonseca (Cefet-RJ), que é uma instituição pública destinada ao ambiente educacional com formação humana, científica e tecnológica. Foi realizada uma pesquisa bibliográfica a partir dos conceitos-chave que auxiliaram na identificação de publicações da temática estudada. A metodologia utilizada foi o estudo de caso com aplicação de questionários, os quais foram respondidos por grupos de funcionários com deficiência, de seus gestores, e também do setor de capacitação, sendo todos servidores públicos pertencentes ao quadro de profissionais do Cefet-RJ. O tratamento dos dados foi realizado através da análise de conteúdo. O trabalho de campo mostrou o envolvimento do profissional PcD com a instituição. Os objetivos almejados nesta pesquisa foram atingidos e direcionados para propostas de melhorias nos processos de inserção, contratação e adaptação das PcDs em seu ambiente de trabalho.
Despite relative efforts in order to sustain citizen equality, Brazilian society still remains inattentive to some groups’ especial needs, such as the elderly, children, pregnant, sick and people with disability (PwD). However, concerning the PwDs, a current legislation aiming to insert them in the labor market actually exists and have been contributing to their hiring. This paper focused on the main challenges found during the PwDs capacitation process in the Centro Federal de Educação Tecnológica Celso Suckow da Fonseca (Cefet-RJ) full-time staff. Cefet-RJ is a public institution destined to be an education environment for human, scientific and technological formation. From key concepts that helped identify publications for this studied theme, a bibliographical research was achieved. We used the case study methodology, in addition of questionnaires, answered by groups of employees with disability, their managers and also by the resource and training center. All questioned employees are from Cefet’s full-time staff. The data handling was done by analyzing the content. The fieldwork showed PwDs’ involvement with the Institution. The targets were achieved and the results directed as improvement proposals for insertion, hiring and adaptation processes in the working environment.
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Gaus, Caroline, and n/a. "Dioxins in the Marine Environment: Sources, Pathways and Fate of Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in Queensland, Australia." Griffith University. School of Public Health, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20030624.144111.

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Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans(PCDFs) are two groups of lipophilic, persistent organic pollutants that are produced as by-products of various anthropogenic and industrial processes. Due to their relatively high toxic potencies and potential to bioaccumulate and biomagnify in organisms and through the food chain, the contemporary widespread distribution of these compounds is a concern to the health of the environment, wildlife and humans. This study determined the distribution, pathways and fate of PCDD/Fs in the coastal zone of Queensland, Australia, including the inshore marine environment of the World Heritage Great Barrier Reef Marine Park. This ecosystem supports unique fauna and flora such as the marine herbivorous mammal dugong (Dugong dugon) and its food source, seagrass. Elevated PCDD/Fs were present in soils and sediments along the entire Queensland coastline. Highest concentrations were found in soil from agricultural irrigation drains and in sediments near the mouths of major rivers. Elevated concentrations were associated with rural and urban types of land-use, and PCDD/Fs were present even in locations remote from anthropogenic activities. PCDD/F congener-specific analysis revealed an unusual profile in all samples, dominated by OCDD, with PCDFs present in low concentrations or below the limit of detection. Distinct HxCDD isomer patterns were observed, with the 1,2,3,7,8,9-HxCDD/1,2,3,4,6,7-HxCDD isomer pair dominating the 2,3,7,8-substituted HxCDDs. Similar congener and isomer characteristics were reported in sediments, soil and clay samples from other continents, but could not be attributed to any known source. Possible PCDD/F sources in Queensland were assessed using segmented estuarine sediment cores, for which radiochemical chronologies were established for each depth. Variations of PCDD/F concentrations in the sediment cores over several centuries of depositional history were relatively small. Elevated PCDD levels were still present in sediment slices from the early 17th century. PCDD/F homologue profiles in sediments deposited during the last 350 years were almost identical and correlated well to the characteristic profiles observed in surface sediments and soils from the entire Queensland coastline. These results suggested the presence of an unidentified PCDD source prior to the production of commercial organochlorine products. To investigate the formation of the unusual PCDD/F profiles, congener and isomer specific analyses were undertaken in soils, sediments and dated sediment cores. The results demonstrated that specific transformation processes in the environment have resulted in the observed PCDD profile characteristics. Dechlorination of OCDD was proposed to result in distinct 1,4-pattern characteristics (i.e. formation of isomers chlorinated in the 1,4,6,9-positions). Consequently, the environmental samples do not reflect the signatures of the original source. An alternative hypothesis to natural formation is discussed evaluating these processes and their implications for possible source contributions. This hypothesis explores the potential for the influence of anthropogenic PCDD precursors (e.g. pentachlorophenol) during the 1940s to 1990s. Transport of PCDD/Fs from the land-based source via impacted tributary river systems, and subsequent deposition processes are proposed to result in PCDD/F accumulation in the inshore marine ecosystem. The extent of the sediment PCDD/F contamination governs the concentrations in the extensive inshore marine seagrass meadows of Queensland. Partitioning processes in the sediment-seagrass system lead to increased toxic equivalency (TEQ) in the seagrass, compared to sediment.The relationship between contaminated inshore sediments, seagrass and dugongs were evaluated using six dugong habitat regions along the coastline. PCDD/F body burdens in dugongs are governed by sediment (and seagrass) PCDD/F concentrations in their habitat. High seagrass (and incidental sediment) ingestion rates, selective retention of toxicologically potent congeners and relatively low PCDD/F elimination capacities in dugongs are proposed to result in elevated PCDD/F concentrations and TEQ levels in adult animals. Transfer efficiencies of 4 and 27% of maternal TEQ levels to foetuses and calves (respectively) during gestation and lactation result in relatively high exposure potentials to offspring. Compared to no-observed-adverse-effect-levels in other mammals, and based on the results of this study, a tolerable daily intake (TDI) of 10-24 pg TEQ kg-1 day-1 was estimated for dugongs. The results of the present study found that dugongs from some regions along the coastline of Queensland exceed this TDI by up to 20 fold, suggesting that these populations may be at risk from PCDD/F contamination in their habitat. These results have important implications for the health of the environment, wildlife and humans and were used to develop a conceptual understanding of the sources, pathways and fate of dioxins in Queensland, Australia.
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Yang, Yun. "Temperature dependent PCDD/PCDF product distributions from phenols." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/20182.

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Sewart, Andrew Paul. "The fate and behaviour of polychlorinated dibenzo-p-dioxins, dibenzofurans and polychlorinated biphenyls in sewage sludge : amended agricultural soils and their potential transfer into terrestrial foodchain via lactating cattle." Thesis, Lancaster University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261004.

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Harrad, Stuart J. "Levels and sources of PCDDs and PCDFs in UK soils." Thesis, University of East Anglia, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327955.

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Del, Rio Gomez Iliana Maria. "Reproductive outcomes in people contaminated by PCBs/PCDFs, organohalogens in the Yucheng accident." Thesis, London School of Hygiene and Tropical Medicine (University of London), 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.407767.

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Hess, Philipp. "The determination and environmental significance of planar aromatic compounds in the marine environment." Thesis, Robert Gordon University, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388494.

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Prange, Joelle, and n/a. "Origin of Dioxins in Queensland: Investigations into the Distribution and Sources of Polychlorinated Dibenzo-P-Dioxins in the Queensland Terrestrial Environment." Griffith University. School of Public Health, 2004. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20040615.161651.

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Polychlorinated dibenzo-p-dioxins and polychlorinated dibenzofurans (PCDD/Fs) are persistent organic pollutants of global concern as they are persistent, toxic and can biomagnify through the food chain. PCDD/Fs are generally regarded as trace contaminants in a number of chemical products and they are formed as by-products from various industrial, chemical and combustion processes. The pollution with PCDD/Fs occurs with the release of these chemicals into the environment, resulting in the contamination of various compartments including; air, soil, sediment and biota. Studies that have investigated the distribution of PCDD/Fs in the environment suggest that the highest concentrations of these pollutants are found in locations with a history of industrial or chemical PCDD/F sources. Queensland is the north-eastern state of Australia. Queensland has a low population density, few industrial activities and is considered predominantly rural. Therefore it was somewhat surprising that elevated concentrations of PCDD/Fs (in particular the higher chlorinated PCDDs) have been observed in soil and sediments samples collected from various locations along the Queensland coast. The concentrations of PCDDs in Queensland samples were comparable to or higher than concentrations in similar matrices from highly polluted regions elsewhere. To investigate the origin of PCDDs in Queensland, the geographical distribution of PCDD/Fs in topsoil was investigated in the coastal and inland environments to provide information on the potential sources and to estimate the extent of the PCDD contamination. Distinct east-west gradients were detected in topsoil collected from bushland areas across the state with elevated PCDD concentrations confined to the coastal region. Within the coastal region, the contamination could not be associated with specific land uses. In fact, the PCDD/F congener profile was similar in the majority of samples from the coastal region, with a dominance of the higher chlorinated PCDDs (in particular OCDD), whereas PCDFs were low or below the limit of detection. The similarity in the PCDD/F congener profiles in the soils along the coastal region indicated that a source of PCDDs of similar origin has resulted in the contamination of soil extending more than 3000 km and estimations suggest that more than 50 tonnes of OCDD is stored in the topsoil of Queensland.s coastal region. Investigation into the vertical distribution of PCDDs in Queensland coastal soils revealed elevated concentrations of PCDDs, (in particular OCDD) in soils to at least 3.5 m. These results indicated that the extent of the PCDD contamination is significantly greater than anticipated and it was estimated that there is in the order of 3 000 tonnes of OCDD stored in Queensland's coastal soils. The specific PCDD/F congener profile in Queensland coastal soils is unlike known PCDD/F source profiles which led to the suggestion that some yet unidentified formation mechanism may have resulted in the contamination. Potential natural sources of PCDD/Fs, including forest fires, geogenic and biogenic processes were assessed as possible origins for the PCDD contamination in Queensland. Elevated concentrations of PCDDs were detected in the atmosphere during a 'prescribed burn'. This study demonstrated that although forest fires influence atmospheric PCDD/F concentrations substantially, forest fires are not the source of PCDDs in Queensland; rather they are an important mechanism for the redistribution of PCDDs and may have attributed to the widespread PCDD contamination. In this study geological materials (oil shale and kaolin) were analysed as a proxy to assess a geogenic origin of PCDDs. Elevated concentrations of PCDDs were observed in the kaolin samples, however similar and higher concentrations were detected in surface and sub-surface soils, suggesting that specific geogenic formation processes investigated are not the source of PCDDs in Queensland. A preliminary indication for a biogenic origin of PCDDs was identified during the anaerobic incubation of sugarcane irrigation sediments. An increase in the concentration of OCDD in the anaerobic treatment, compared to the control was observed after incubation for 90 days. In these same experiments, a dechlorination of OCDD to lower chlorinated (1,4,6,9-substituted) PCDDs was also observed. Similar transformation processes were observed in other anaerobic environments in Queensland, which led to the suggestion that a biogenic formation of PCDDs (possibly from a precursor) may be responsible for the origin of PCDDs in Queensland.
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Books on the topic "PCDs"

1

Mujica, Javier. Herramientas jurídicas para la defensa de los Derechos Humanos de las PCDs. Jesús María, Lima: CEDAL, Centro de Asesoría Laboral del Perú, 2005.

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Harrad, Stuart. Levels and sources of PCDDs and PCDFs in UK soils. Norwich: University of East Anglia, 1989.

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Lee, Anthony. Assessment of PCDDs and PCDFs from PCB transformer and capacitor fires. Cincinnati, OH: U.S. Environmental Protection Agency, Hazardous Waste Engineering Research Laboratory, 1985.

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Sheffield, Arthur. Polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs): Sources and releases. Ottawa: Environmental Protection Service, 1985.

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Carbonneau, Jean M. Fires in electrical equipment containing PCBs: Recommendations to prevent contamination by PCDFs. Ottawa, Ont: Environment Canada, Environmental Protection Service, 1985.

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Steer, P. Ambient air sampling for PCDD/PCDF near two pulp mills in northern Ontario. [Toronto]: Ontario Environment, 1992.

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Serdar, Dave. Polychlorinated Dibenzo-P-Dioxins (PCDDS) and Dibenzofurans (PCDFS) in Snake River suspended particulate matter. Olympia, Wash: Washington State Dept. of Ecology, 1997.

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Serdar, Dave. Polychlorinated Dibenzo-P-Dioxins (PCDDs) and Dibenzofurans (PCDFs) in Snake River suspended particulate matter. Olympia, Wash: Washington State Dept. of Ecology, 1997.

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Campbell, Beverly. Characterization of PCB transformer/capacitor fluids and correlation with PCDDs and PCDFs in soot. Cincinnati, OH: U.S. Environmental Protection Agency, Hazardous Waste Engineering Research Laboratory, 1987.

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Campbell, Beverly. Characterization of PCB transformer/capacitor fluids and correlation with PCDDs and PCDFs in soot. Cincinnati, OH: U.S. Environmental Protection Agency, Hazardous Waste Engineering Research Laboratory, 1987.

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Book chapters on the topic "PCDs"

1

Safe, S., and O. Hutzinger. "PCDDs and PCDFs: Sources and Environmental Impact." In Environmental Toxin Series, 1–20. Berlin, Heidelberg: Springer Berlin Heidelberg, 1990. http://dx.doi.org/10.1007/978-3-642-70556-4_1.

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Deng, Lifen, Roger Nilen, and Serdar Ozbayraktar. "The Effects of Diamond Grit Characteristics on the Microstructure and Abrasion Resistance of PCDs Sintered by HPHT." In Proceedings of the 41st International Conference on Advanced Ceramics and Composites, 1–9. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2018. http://dx.doi.org/10.1002/9781119474678.ch1.

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Roth, Rolf, Günther Scholz, and H. J. Jürgens. "Process for PCDD and PCDF Removal from Contaminated Soil." In Contaminated Soil ’88, 819–25. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2807-7_129.

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Neumann, G., A. Hülster, and H. Marschner. "Identifizierung PCDD/PCDF-Mobilisierender Verbindungen in Wurzelexsudaten von Zucchini." In Rhizosphärenprozesse, Umweltstreß und Ökosystemstabilität, 167–75. Wiesbaden: Vieweg+Teubner Verlag, 1997. http://dx.doi.org/10.1007/978-3-322-83429-4_20.

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Bordajandi, Luisa R., Belén Gómara, and María José González. "Analysis of Dioxins and Furans (PCDDs and PCDFs) in Food." In Analysis of Endocrine Disrupting Compounds in Food, 49–73. Oxford, UK: Wiley-Blackwell, 2012. http://dx.doi.org/10.1002/9781118346747.ch3.

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Monzo, Ana M., Nikolaos Prapas, and Artemis Karkanaki. "PCOS." In Ultrasound Imaging in Reproductive Medicine, 91–109. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-16699-1_6.

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Stracquadanio, Mariagrazia, and Lilliana Ciotta. "PCOS Therapy." In Metabolic Aspects of PCOS, 89–137. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-16760-2_6.

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Warren, John-David, Josh Adams, and Harald Molle. "Making PCBs." In Arduino Robotics, 203–56. Berkeley, CA: Apress, 2011. http://dx.doi.org/10.1007/978-1-4302-3184-4_6.

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Först, C., L. Stieglitz, and G. Zwick. "Isomer-Specific Determination of PCDD/PCDF in Water Leachate of a Waste Landfill." In Organic Micropollutants in the Aquatic Environment, 52–58. Dordrecht: Springer Netherlands, 1988. http://dx.doi.org/10.1007/978-94-009-2989-0_6.

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Braun-Falco, Markus, Henry J. Mankin, Sharon L. Wenger, Markus Braun-Falco, Stephan DiSean Kendall, Gerard C. Blobe, Christoph K. Weber, et al. "PCD." In Encyclopedia of Molecular Mechanisms of Disease, 1592. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-29676-8_6932.

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Conference papers on the topic "PCDs"

1

Kimis, Thabata Regina Prosdos, and Nelson Alexandre Paulino. "Mobilidade Autônoma para PCDs." In XXVIII SIMPÓSIO INTERNACIONAL DE ENGENHARIA AUTOMOTIVA. São Paulo: Editora Blucher, 2021. http://dx.doi.org/10.5151/simea2021-pap126.

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Telles, Marcelo Josué, Jorge Luis Victória Barbosa, and Rodrigo Da Rosa Righi. "Um Modelo Computacional para Acessibilidade em Cidades Inteligentes." In XII Simpósio Brasileiro de Sistemas de Informação. Sociedade Brasileira de Computação, 2016. http://dx.doi.org/10.5753/sbsi.2016.5953.

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Este artigo apresenta o MASC, que é um modelo computacional para acessibilidade em cidades inteligentes. A utilização da computação ubíqua na área da acessibilidade oportuniza soluções para suporte a pessoas com deficiências (PcDs). Diferente das abordagens propostas, o MASC utiliza as interações das PcDs para composição de trilhas que serão oferecidas como serviço. Além disso é genérico pois suporta diferentes tipos de deficiências e é indicado para aplicações massivas. Foi desenvolvido um protótipo para avaliar desempenho e funcionalidade. Esta avaliação foi realizada com dados gerados por um simulador de contextos em uma região localizada no centro da cidade São Leopoldo - RS. Os resultados apresentados nos testes indicam que os serviços oferecidos pelo modelo podem ser implantados nas cidades inteligentes para colaborar com acessibilidade, auxiliando PcDs, profissionais da saúde e administração pública.
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Kimbrough, Joseph R., A. G. MacPhee, P. M. Bell, S. R. Burns, and J. M. Parker. "Performance improvements of PCDs for measuring x-ray bang time." In SPIE Optical Engineering + Applications, edited by Perry Bell and Gary P. Grim. SPIE, 2012. http://dx.doi.org/10.1117/12.930551.

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Liu, Wei, Lin Shi, Yingcao Zhou, Ying Wang, and Hongwei Jiang. "Development and Application of Pressure Control Drilling System (PCDS) for Drilling Complex Problem." In International Petroleum Technology Conference. International Petroleum Technology Conference, 2013. http://dx.doi.org/10.2523/iptc-17143-ms.

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Liu, Wei, Lin Shi, Yingcao Zhou, Ying Wang, and Hongwei Jiang. "Development and Application of Pressure Control Drilling System (PCDS) for Drilling Complex Problem." In International Petroleum Technology Conference. International Petroleum Technology Conference, 2013. http://dx.doi.org/10.2523/17143-ms.

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Scarborough, Patrick T., Howard L. Hendrix, Matt D. Davidson, Xiaofeng Guan, Robert S. Dahlin, and E. Carl Landham. "Power Systems Development Facility: High Temperature, High Pressure Filter System Operations in a Combustion Gas." In ASME 1999 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/99-gt-343.

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The Power Systems Development Facility (PSDF) is a Department of Energy (DOE) sponsored engineering scale demonstration of two advanced coal-fired power systems. Particulate cleanup is achieved by several High Temperature, High Pressure (HTHP) gas filtration systems. The PSDF was designed at sufficient scale so that advanced power systems and components could be tested in an integrated fashion to provide confidence and data for commercial scale-up. This paper provides an operations summary of a Siemens-Westinghouse Particulate Control Device (PCD) filtering combustion gas from a Kellogg Brown & Root (KBR) transport reactor located at the PSDF. The transport reactor is an advanced circulating fluidized bed reactor designed to operate as either a combustor or a gasifier. Particulate cleanup is achieved by using one of two PCDs, located downstream of the transport reactor. As of the end of 1998, the transport reactor has operated on coal as a combustor for over 3500 hours. To date, filter elements from 3M, Blasch, Coors, Allied Signal (DuPont), IF&P, McDermott, Pall, Schumacher and Specific Surface have been tested up to 1400°F in the Siemens-Westinghouse PCD. The PSDF has a unique capability for the collection of samples of suspended dust entering and exiting the PCD with Southern Research Institute’s (SRI) in-situ particulate sampling systems. These systems have operated successfully and have proven to be invaluable assets. Isokinetic samples using a batch sampler, a cascade impactor and a cyclone manifold have provided valuable data to support the operation of the transport reactor and the PCD. Southern Research Institute has also supported the PSDF by conducting filter element material testing.
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Marolt, Daniel, Matthias Greif, Jurgen Scheible, and Goran Jerke. "PCDS: A new approach for the development of circuit generators in analog IC design." In 2014 Austrian Workshop on Microelectronics (Austrochip). IEEE, 2014. http://dx.doi.org/10.1109/austrochip.2014.6946310.

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Hunt, Gary T. "PCDDs/PCDFs in MSW Emissions: Pre and Post Mercury Control — A Comparison of Profiles." In 15th Annual North American Waste-to-Energy Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/nawtec15-009.

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In recent years since enactment of the NSPS, carbon injection has significantly reduced mercury emissions from MSW units. What is not well known is that carbon injection has also resulted in further unintentional reductions in PCDDs/PCDFs emissions from MSW emissions. These emissions reductions have taken place on a mass basis as well as a TEF weighted basis. The latter have been more pronounced on a percent reduction basis owing to changes in the PCDDs/PCDFs profile directly attributable to preferential adsorption of selected 2,3,7,8-substituted congeners on activated carbon injected in the gas stream for mercury removal. These lower molecular weight congeners are typically present in the gas phase and contribute more significantly to the TEF weighted sum.
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Tata, Melissa, and Anna C. Thornton. "Process Capability Database Usage in Industry: Myth vs. Reality." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/dfm-8968.

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Abstract Process capability data (PCD) is used during design to assess manufacturability, allocate tolerances, and evaluate robustness. Process capability databases (PCDBs)1 have been developed by many design/manufacturing industries to capture their process capability and communicate it to the entire organization. While these databases are being used to monitor quality, they are not being effectively utilized by design. A survey of design and manufacturing companies was used to determine both how PCD is being used and the barriers preventing design from fully utilizing PCD. Two key barriers were identified: lack of a company-wide vision for PCD usage and poor communication between manufacturing and design. Management support, training, database population, common databases, and common indexing schemes were identified as solutions to these barriers.
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Gao, Zhengyang, and Peng Ji. "The Reactivities In Different HgCl Substitution Sites Of PCDDs/PCDFs." In 2016 5th International Conference on Environment, Materials, Chemistry and Power Electronics. Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/emcpe-16.2016.124.

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Reports on the topic "PCDs"

1

Lugar, R. M. Results of monitoring for PCDDs and PCDFs in ambient air at McMurdo Station, Antarctica. Office of Scientific and Technical Information (OSTI), September 1993. http://dx.doi.org/10.2172/10192134.

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Mar, Alan. PCSS/VCSEL Update. Office of Scientific and Technical Information (OSTI), April 2018. http://dx.doi.org/10.2172/1527305.

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Rodriguez, Giselle. PCBs in Caulk and Paint. Fort Belvoir, VA: Defense Technical Information Center, June 2010. http://dx.doi.org/10.21236/ada566851.

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Elbers, I. J. W., Guillaume ten Dam, D. P. K. H. Pereboom, and W. C. M. de Nijs. Proficiency test for dioxins, dioxin-like PCBs and non-dioxin-like PCbs in feed oil. Wageningen: RIKILT Wageningen University & Research, 2018. http://dx.doi.org/10.18174/462577.

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Klasson, K. T., and D. A. Abramowicz. Bioremediation of PCBs. CRADA final report. Office of Scientific and Technical Information (OSTI), June 1996. http://dx.doi.org/10.2172/671963.

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Brown, K. G., and M. A. Pickett. DWPF PCCS version 2. 0 test case. Office of Scientific and Technical Information (OSTI), August 1992. http://dx.doi.org/10.2172/6745310.

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Waisner, Scott A., Agnes B. Morrow, Catherine C. Nestler, Charles Coyle, and Victor F. Medina. Chemical Degradation of PCBs in Alaskan Soils. Fort Belvoir, VA: Defense Technical Information Center, April 2011. http://dx.doi.org/10.21236/ada541875.

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Lindquist, Timothy E. PCIS-2: Distributed Component-based Software Engineering. Fort Belvoir, VA: Defense Technical Information Center, May 1999. http://dx.doi.org/10.21236/ada363579.

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Sutton, Jacob O. FIBER LASER CONSTRUCTION AND THEORY INCLUDING FIBER BRAGG GRATINGS Photonic Crystal Fibers (PCFs) and applications of gas filled PCFs. Office of Scientific and Technical Information (OSTI), March 2017. http://dx.doi.org/10.2172/1346829.

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Seegal, Richard F. PCBs Alter Dopamine Mediated Function in Aging Workers. Fort Belvoir, VA: Defense Technical Information Center, January 2009. http://dx.doi.org/10.21236/ada501075.

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