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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
41

Captage du CO2 en post combustion par procédé de perméation gazeuse / Gas permeation process for post combustion CO2 capture

Pfister, Marc 05 April 2017 (has links)
La technologie de Captage et Stockage du CO2 (CSC) est considérée comme une des principales solutions pour limiter les rejets de gaz à effet de serre (CO2) et lutter contre le réchauffement climatique. L’étape de captage fait appel à un procédé de séparation des fumées de post combustion qui a pour fonction l’extraction sélective du CO2 des autres composés. Les principales performances visées sont un taux de capture et une pureté du CO2 supérieurs à 90%, ainsi qu’une consommation énergétique minimale afin de ne pas générer un niveau trop élevé d’émissions secondaires de CO2. La perméation gazeuse par membrane dense est une technologie de séparation potentiellement applicable au captage du CO2 en post combustion. Sur la base de différents types de matériaux et mécanisme de transport associés (processus physique ou chimique) une large plage de valeurs de perméabilité et de sélectivité peut être atteinte. Une des dernières familles de membrane ayant démontrée des performances de séparation pouvant être intéressantes pour le captage du CO2 sont les membranes à transport facilité dites ‘’réactives ‘’. Une analyse systématique des performances de séparation de modules membranaires basés sur des membranes physiques (polymères denses) et sur des membranes réactives (transport facilité) pour le traitement de fumées de post combustion a été réalisée. La simulation d’un procédé de captage complet, incluant un ou deux étages de séparation membranaire, une étape de séchage et une étape de compression a ensuite été effectuée. L’ensemble des résultats, en particulier la pénalité énergétique globale du système et l’estimation des surfaces membranaires nécessaires, permet de positionner la technologie de perméation gazeuse comparativement aux autres procédés de captage / CO2 Capture and Storage (CCS) is a promising solution to separate CO2 from flue gas, to reduce the CO2 emissions in the atmosphere, and hence to reduce global warming. In CCS, one important constraint is the high additional energy requirement of the different capture processes. That statement is partly explained by the low CO2 fraction in the inlet flue gas and the high output targets in terms of CO2 capture and purity (>90%).Gas permeation across dense membrane can be used in post combustion CO2 capture. Gas permeation in a dense membrane is ruled by a mass transfer mechanism and separation performance in a dense membrane are characterized by component’s effective permeability and selectivity. One of the newest and encouraging type of membrane in terms of separation performance is the facilitated transport membrane. Each particular type of membrane is defined by a specific mass transfer law. The most important difference to the mass transfer behavior in a dense membrane is related to the facilitated transport mechanism and the solution diffusion mechanism and its restrictions and limitations.Permeation flux modelling across a dense membrane is required to perform a post combustion CO2 capture process simulation. A CO2 gas permeation separation process is composed of a two-steps membrane process, one drying step and a compression unit. Simulation on the energy requirement and surface area of the different membrane modules in the global system are useful to determine the benefits of using dense membranes in a post combustion CO2 capture technology
42

Modeling the Biota Population Impact on Polychlorinated Biphenyls Transport and Simulating PCBs Anaerobic Biodegradation in the Lake System

Sun, Xiangfei 01 April 2018 (has links)
No description available.
43

The impact of anti-money laundering legislation on the legal profession in South Africa

Hamman, Abraham John January 2015 (has links)
Doctor Legum - LLD / This thesis investigates the legislative measures employed in South Africa to combat the implication of lawyers in money laundering schemes. Criminals make use of sophisticated technological means to transfer money and launderers routinely approach lawyers to assist them in their illegal endeavours. The legal profession is almost tailor-made for abuse by launderers, because lawyers work with huge amounts of money, clients are entitled to legal professional privilege and the right to legal representation is guaranteed constitutionally. The South African anti-money laundering regime, for the most part, is contained in two statutes, the Financial Intelligence Centre Act (FICA) and the Prevention of Organised Crime Act (POCA). Whilst FICA and POCA require the legal profession to be vigilant and accountable in the fight against money laundering, unfortunately they also infringe on hard-won rights, such as legal professional privilege, the right to legal representation and attorney-client confidentiality. The study considers South Africa’s efforts to fulfil its international anti-money laundering obligations whilst upholding the criminal procedural rights guaranteed in the Constitution. It is suggested that certain sections of FICA and POCA fail to find the required balance between protecting citizens from the harms of money laundering and protecting the fundamental rights of attorneys and their clients. Lawyers are in a unique position of trust and in some instances have access to information that may incriminate their clients. Unfortunately, in its quest to combat money laundering, Parliament did not consider seriously enough the position of lawyers and took the easy option of criminalising fees paid with tainted funds, as well as the non-submission of suspicious transaction reports (STRs) and cash transaction reports (CTRs). As a result, the South African legal profession is saddled with unacceptable constraints.
44

Využití hiporehabilitace v rezidenční léčbě závislostí v psychiatrické nemocnici. / Use of Equine Facilitated Activities and Therapies (hippo-rehabilitation) in Addiction Treatment in a Psychiatric Hospital

Bartoňová, Michaela January 2021 (has links)
Background: The diploma thesis deals with the method of equine facilitated psychiatry and psychology and its use in the treatment of addictions. The theoretical part is the starting point of the whole work. It presents the basic methods of treatment used, the method of Equine facilitated activities and therapies itself and its inclusion in traditional methods of addiction treatment. The research part is based on qualitative data collection. Aims: The aim of the diploma thesis is to describe the use of equine facilitated activities and therapies in residential addiction treatment. Find out how patients and therapists evaluate this method, what areas of life are affected by equine facilitated activities and therapies and how it fits into current treatment methods. Data: The research group consists of eight patients from the addiction treatment department at a psychiatric hospital who met the selection criteria. And two therapists who work with the method of equine facilitated psychiatry and psychology in addicted clients / patients and met the selection criteria. Methods: The chosen type of research was process evaluation. Patients were focused on the focus using a semi-structured interview and a semi-structured interview on the therapists. Results and Conclusion: Research has shown that horses have...
45

Developing discourse structure analysis for use on conversations that include people with aphasia

Gulick, Eleanor 28 August 2020 (has links)
No description available.
46

Dating App Facilitated Sexual Violence: The Prevalence and Mental Health Effects

Echevarria, Samantha G 01 January 2021 (has links)
Dating apps are in growing popularity, with 48% of dating app users in the United States being adults under 30 (Pew Research Center, 2020, Figure 5). While dating apps can provide a faster and easier way to meet or message a potential partner, they are also a relatively new platform to experience sexual violence. This thesis aims to explore the frequency of sexual violence experienced via dating apps as well as the specific effects this subtype of sexual violence has on the mental health of college students. Technology facilitated sexual violence (TFSV) includes unwanted sexual advances, sexual harassment, gender/sexuality-based abuse, sexual coercion, and rape that a person may experience due to technology that connected the victim to the perpetrator (Henry & Powell, 2018). While there is limited research on the physical and mental health effects of TFSV, past research includes all forms of technology. By focusing on dating apps, a widely used online platform, this research hopes to fill a gap in the research. The study conducted was of 230 college students at the University of Central Florida. Of all study participants, 144 reported current or past use of dating apps, and 88.8% of users reported at least one instance of sexual violence via dating apps. Overall, greater frequency of TFSV on dating apps was associated with more symptoms of depression, anxiety, PTSD, greater loneliness, less perceived self-control, and lower self-esteem.
47

A Theoretical Study of Carriers in Polymeric Facilitated Transport Membranes for Post-combustion Carbon Capture

Deng, Xuepeng January 2021 (has links)
No description available.
48

Composite Materials of Reactive Ionic Liquids for Selective Separation of CO2 at Low Concentration

Lee, Yun-Yang 27 January 2023 (has links)
No description available.
49

CO<sub>2</sub> facilitated transport membranes for hydrogen purification and flue gas carbon capture

Tong, Zi, Tong January 2017 (has links)
No description available.
50

POLYMER MEMBRANES FOR FLUE GAS CARBON CAPTURE AND FUEL CELL APPLICATION

Chen, Yuanxin January 2015 (has links)
No description available.

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