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Dissertations / Theses on the topic 'Characterization of ammonium chloride'

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Published: 3 June 2025

Last updated: 31 July 2025

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1

Gudgel, Katherine Ann. "Growth of ammonium chloride dendrites." Diss., The University of Arizona, 2001. http://hdl.handle.net/10150/289878.

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The ammonium chloride-water system has been used extensively as a transparent metal analog to model solidification in binary metal alloys. In this work, the growth rate and morphology of NH₄Cl dendrites grown from aqueous solutions were studied. Since an accurate knowledge of the materials parameters is essential to predicting the growth behavior, the equilibrium segregation coefficient was measured and a detailed analysis of the other NH₄Cl-H₂O materials properties cited in the literature was conducted. Isothermal experiments on bulk NH₄Cl-H₂O samples confirmed that the previously reported di

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2

Yang, Jeongwoo. "Fate and effect of alkyl benzyl dimethyl ammonium chloride in mixed aerobic and nitrifying cultures." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19871.

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Thesis (M. S.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2008.<br>Committee Chair: Spyros G. Pavlostathis; Committee Member: Ching-Hua Huang; Committee Member: John A. Pierson.

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3

Dorreyatim, Mohammad. "Cyclic Polarization of AA 3102 in Corrosive Electrolytes Containing Sodium Chloride and Ammonium Sulfate." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc955069/.

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Corrosion of all aluminum microchannel heat exchangers present a challenge in automotive and heating, ventilation, and air conditioning (HVAC) industries. Reproducibility of Salt Water Acetic Acid Test (SWAAT) has been questioned and a need to new corrosion tests with better reproducibility has risen. Cyclic polarization, that is an electrochemical test, was explored for its suitability for the assessment of AA 3102 tube material that is currently a popular aluminum alloy used in manufacturing of heat exchanger. Corrosive electrolytes containing 3.5 % sodium chloride with 0.5 % ammonium sulf

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4

Li, Wenjing. "Characterization of the ammonium transporter family AMF1 in maize." Thesis, The University of Sydney, 2017. http://hdl.handle.net/2123/18646.

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Ammonium is an important inorganic nitrogen source utilized by plants. The uptake of ammonium by plant roots involves two types of ammonium transport pathways, the high-affinity ammonium transporters (HATS) and the low-affinity ammonium transporters (LATS). Genes encoding HATS proteins have been studied well in plants while the LATS pathway is not sufficiently understood. Recently, through a transcriptional linkage to a membrane bound transcription factor, bHLHm1, a novel family of ammonium transporters, AMF1 (ammonium facilitator 1) were discovered. Heterologous expression of yeast and soybea

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5

Zell, Elizabeth T. "A Novel Synthesis and Characterization of Copper Chloride Nanocrystals in a Sodium Chloride Matrix." Youngstown State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1387281922.

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6

Duggirala, Ravi Kumar. "Double diffusive convection during solidification of ammonium chloride - water (NH4CL-H20) mixture in a trapezoidal cavity." FIU Digital Commons, 2004. http://digitalcommons.fiu.edu/etd/3095.

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The effect of the initial concentration of ammonium chloride (sub eutectic: C < 19.8 wt. % and eutectic Ce= 19.8 wt. %) and boundary temperatures (Tcold = -30 0C to -10 0C) on the solidification process is examined. Particle Image Velocimetry (PIV) is used in this study to measure the velocity fields in the melt during the solidification process. The distributions of temperatures at discrete locations in the solution and the boundary walls were measured. This study focuses on the solidification of an ammonium chloride-water (NH4Cl- H2O) solution in a trapezoidal cavity with one and two incline

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7

Wills, Peter. "Novel biocidal formulation." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/novel-biocidal-formulation(776ed624-6717-496f-9b31-ad2edce8e24b).html.

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In this modern age, society has become much more aware of the danger bacteria can have on people's health. Personal and household antimicrobial formulations are commonly used within the home to lower the levels of harmful bacteria such as E. Coli, Salmonella and Pseudomonas. The active which kills the bacteria within the formulation is described as a biocide. This research looks at the often neglected potential of cationic polyelectrolyte as a biocide, firstly within solution and secondly in creating an antimicrobial surface. The solution properties and antimicrobial activity for a range of co

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8

Schäfer, Arne. "Characterization of ammoniumtransporters in Arabidopsis thaliana." Phd thesis, Universität Potsdam, 2005. http://opus.kobv.de/ubp/volltexte/2005/593/.

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Nitrogen is often a limiting factor for plant growth due to its heterogenous distribution in the soil and to seasonal and diurnal changes in growth rates. In most soils, NH4+ and NO3 – are the predominant sources of inorganic nitrogen that are available for plant nutrition. In this context, plants have evolved mechanisms that enable them to optimize nitrogen acquisition, which include transporters specialized in the uptake of nitrogen and susceptible to a regulation that responds to nitrogen limiting or excess conditions. Although the average NH4+ concentrations of soils are generally 100 to 1

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9

Wacker, Tobias [Verfasser], and Susana [Akademischer Betreuer] Andrade. "Electrophysiological characterization of Ammonium transport proteins = Elektrophysiologische Charakterisierung von Ammoniumtransportproteinen." Freiburg : Universität, 2015. http://d-nb.info/1115813951/34.

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10

Tamami, Mana. "Synthesis and characterization of ammonium ionenes containing hydrogen bonding functionalities." Diss., Virginia Tech, 2013. http://hdl.handle.net/10919/19234.

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Ammonium ionenes are polycations that have quaternary nitrogens in their macromolecular backbone and are synthesized via step-growth polymerization technique. They offer interesting coulombic properties, and the synthetic design provides control over charge density. Non-covalent interactions including nucleobase hydrogen bonding and electrostatics were studied in ammonium ionenes. The non-covalent interactions are expected to increase the effective molecular weight of polymeric precursors and induce microphase separation due to intermolecular associations. The influence of non-covalent interac

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11

Oh, Seung Dae. "Metagenomic and metatranscriptomic investigation of microorganisms exposed to benzalkonium chloride disinfectants." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/52928.

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Benzalkonium chlorides (BACs) are widely used, broad-spectrum disinfectants and frequently detected in the environment, even at toxic levels for life. Since such disinfectants can induce broad resistance capabilities, BACs may fuel the emergence of antibiotic resistance in the environment. A substantial body of literature has reported that exposure to BACs causes antibiotic resistance; yet, other studies suggest that the resistance linkage is rare, unsystematic, and/or clinically insignificant. Accordingly, whether or not disinfectant exposure mediates antibiotic resistance and, if so, what mo

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12

Svensson, David. "Synthesis and characterisation of polyelectrolytes based on polymers of diallyldimethyl ammonium chloride and poly(styrene-co-butadiene)." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-82344.

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In printed electronics there are many polyelectrolytes to choose from. While polyelectrolytes such as polystyrene sulfonic acid can fulfill many ofthe desired functionalities of a semiconductor, there is a need for other polyelectrolytes with other functionalities, such as functionality at low airhumidity and better cross-linking possibilities, while still functioning as a good semiconductor.Within this thesis, there is a description of general polyelectrolytes, as well as various usages.The synthesis and characterization of new polyelectrolytes that have been developed, based upon diallyldime

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13

Galbraith, S. D. "The response of potassium chloride (KCl), ammonium nitrate (AN) solutions and emulsion explosives to plate impact loading." Thesis, University of Cambridge, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599271.

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The aim of this study was to investigate the dynamic properties of potassium chloride, AN solutions and a commercial emulsion explosive and to understand their response in terms of shock theory and material properties. A plate impact facility was used to shock the KCl, subjecting it to a uni-axial strain state for the duration of the measurements. Stress and strain histories were recorded using piezo-resistive gauges. KCl is an ionic crystal which, when subject to shocks above 2.2 GPa, has a martensitic phase transformation. The stress histories were explained in terms of the shock and release

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14

Craig, Matthew Rankin. "RT-PCR Localization of Phosphoenolpyruvate Carboxykinase (PEPCK) mRNA in Rat Proximal Tubule Segments During Ammonium Chloride Acidosis." VCU Scholars Compass, 1999. http://scholarscompass.vcu.edu/etd/4493.

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In metabolic acidosis, the early increase in PEPCK mRNA and enzyme protein content contributes to the accelerated rates of ammonium and glucose formation. In situ hybridization demonstrated that expression of PEPCK was confined to medullary rays of rat kidney cortex in controls and spread throughout the cortex 10 hours following NH4Cl feeding (Am.J. Physiol., 267: F400, 1994). To identify the specific nephron segments expressing PEPCK in control and acidotic conditions, the mRNA for PEPCK along the nephron of the rat kidney was localized using the technique of reverse transcription and polymer

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15

Field, R. J. "Preparation and characterization studies of hydroxo aluminium chloride solutions." Thesis, University of Bristol, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373736.

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16

Wise, Lynn V. "Characterization of sludges produced when using polyaluminum chloride coagulants." Thesis, Virginia Tech, 1991. http://hdl.handle.net/10919/41514.

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The dewatering characteristics of polyaluminum chloride (Hyper⁺Ion 1050A) sludges were investigated using lab-scale tests including specific resistance to filtration (r*), capillary suction time (CST), and sludge pH. The effects of chemical conditioning (lime and cationic polymer) and mixing intensity (Gt) upon the sludge dewatering characteristics in a pilot-scale plate and frame press were also studied. The dewatering characteristics of the Hyper⁺Ion sludges were found to be dependent upon the influent water turbidity conditions; specifically, the ratio of aluminum coagulant to total dry s

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17

Borgerding, Erika Michelle. "Synthesis, Molecular Weight Characterization and Structure-Property Relationships of Ammonium Ionenes." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/35613.

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Ammonium ionenes are macromolecules with quaternized nitrogen groups in the main chain. Ionenes are commonly referred to as x,y-ionene, where x and y represent the number of methylene groups between quaternized nitrogens. Synthesis of aliphatic ammonium ionenes has been studied since the early twentieth centuryÍ¾ however, absolute molecular weight characterization has only been performed using extensive light scattering and viscosity experiments. Performing aqueous size exclusion chromatography (SEC) on ammonium ionenes provides absolute molecular weight determinations while eliminating the

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18

Tsai, Tsung-hsun 1961. "Hydrodynamical instability of the mushy layer during directional solidification of ammonium chloride solution in a Hele-Shaw cell." Diss., The University of Arizona, 1996. http://hdl.handle.net/10150/282278.

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Experiments of directional solidification in a Hele-Shaw cell, 240 mm x 245 mm x 1 mm, were carried out to study the effects of convective flows and the evolution of structure in the "mushy layer", consisting of fluid and crystallites. Three different concentrations of ammonium chloride (NH₄Cl) solution, 26%, 27% and 28%, with a constant bottom cooling temperature ranging from 5°C to -20°C were used as an analogue model for metallic alloy systems. The experimental design included techniques using Peltier heat pumps along with PID feedback control for temperature regulation. A shadowgraphic vis

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19

Thompson, Christopher Hal. "Identification and characterization of a peptide toxin inhibitor of ClC-2 chloride channels." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26604.

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Thesis (Ph.D)--Biology, Georgia Institute of Technology, 2009.<br>Committee Chair: McCarty, Nael; Committee Co-Chair: Harvey, Stephen; Committee Member: Hartzell, Criss; Committee Member: Kubanek, Julia; Committee Member: Lee, Robert. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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20

Ellerbeck, Matthias [Verfasser], and Martin [Akademischer Betreuer] Parniske. "Identification and characterization of glomeromycotan ammonium transporters / Matthias Ellerbeck. Betreuer: Martin Parniske." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2013. http://d-nb.info/1098130812/34.

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21

Fuska, Jana. "The effect of ammonium chloride and leupeptin on the concentration of prosaposin in endosomes and lysosomes of Marshall cells." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0025/MQ50770.pdf.

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22

Hajaya, Malek Ghaleb. "Fate and effect of quaternary ammonium antimicrobial compounds on biological nitrogen removal within high-strength wastewater treatment systems." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/41113.

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High strength wastewater (HSWW) generated in food processing industries is characterized by high organic carbon and nitrogen content, and thus high oxygen demand. Biological nitrogen removal (BNR) is a technology widely used for the treatment of HSWW. Food processing facilities practice sanitation to keep food contact surfaces clean and pathogen-free. Benzalkonium chlorides (BACs) are cationic quaternary ammonium antimicrobial compounds (QACs) common in industrial antimicrobial formulations. BAC-bearing wastewater generated during sanitation applications in food processing facilities is combin

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23

Damron, Fredrick Heath. "Characterization of vinyl chloride degrading bacteria from a serial anaerobic chloroethene bioreactor." Huntington, WV : [Marshall University Libraries], 2006. http://www.marshall.edu/etd/descript.asp?ref=662.

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24

Rao, Vijayaraghava. "Characterization of novel ligand-gated chloride channel subunits from «Haemonchus contortus»." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=95130.

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Ligand-gated chloride channels (LGCCs) are key components that form the inhibitory neurotransmission system in animals. Nematodes possess LGCCs that are gated by unique ligands such glutamate, serotonin and acetylcholine. Higher living forms such as mammals are not known to possess similar receptors. Hence nematodes can be deemed to comprise a phylum with a divergent inhibitory neurotransmission system. Based on this premise, the current project aimed to better understand the inhibitory nervous system of the parasitic nematode, Haemonchus contortus through the characterization of novel LGCC su

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25

Lang, Christopher M. "Development of quaternary ammonium based electrolytes for rechargeable batteries and fuel cells." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-10262006-140639/.

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Thesis (Ph. D.)--Chemical and Biomolecular Engineering, Georgia Institute of Technology, 2007.<br>Kohl, Paul, Committee Chair ; Bottomley, Lawrence, Committee Member ; Eckert, Charles, Committee Member ; Fuller, Tom, Committee Member ; Teja, Amyn, Committee Member.

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26

Meng, Lingyu. "Development of an Analytical Method for Distinguishing Ammonium Bicarbonate from the Products of an Aqueous Ammonia Co2 Scrubber and the Characterization of Ammonium Bicarbonate." TopSCHOLAR®, 2004. http://digitalcommons.wku.edu/theses/243.

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The link between anthropogenic emissions of CO2 with increased atmospheric CO2 levels and, in turn, with increased global temperature has been well established and accepted. Using aqueous ammonia to capture CO2 and produce an inexpensive nitrogen fertilizer, ammonium bicarbonate (ABC) has been thought as a feasible approach to CO2 sequestration. Due to the different concentrations of reactants and reaction conditions, different carbon-ammonium composites can be produced. In view of achieving a maximum of NH3 utilization in the capture of CO2, the product of ABC will be ideal. Hence the ABC in

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27

Stroyan, Jared James. "Processing and characterization of PVDF, PVDF-TrFE, and PVDF-TrFE-PZT composites." Online access for everyone, 2004. http://www.dissertations.wsu.edu/Thesis/Fall2004/j%5Fstroyan%5F121704.pdf.

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28

Gaspar, Kimberly Jayne. "Cloning and characterization of a cDNA involved in porcine exocrine chloride conductance." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ27409.pdf.

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29

Dufour, Vanessa. "Molecular characterization of novel glutamate-gated chloride channel subunits from «Schistosoma mansoni»." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=123127.

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Flatworms of the genus Schistosoma are wide-spread and clinically significant parasites of humans in the tropics and sub-tropics. In evolutionary terms, they are representatives of the earliest metazoans to have evolved separate sexes, and to possess anatomically distinct central and peripheral nervous systems. Schistosome infections are currently controlled by a single drug, praziquantel (PZQ), but the emergence of schistosome strains resistant to PZQ is a growing concern.A deeper understanding of the basic biology of schistosomes is the first step towards target-based drug discovery. Neurona

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Vaishnav, Shuchi. "Structural characterization of sulphate and chloride doped glasses for radioactive waste immobilisation." Thesis, Sheffield Hallam University, 2018. http://shura.shu.ac.uk/23343/.

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Silicate and borosilicate glasses are of great importance for both the commercial and nuclear waste glass industries. Anionic species such as chloride and, more famously, sulphate are known to play a role in melting, fining and homogenization of commercial silicate glasses. At the same time, these anions can be present in abundance in several kinds of nuclear wastes destined for confinement in a multi-oxide borosilicate glass matrix (the most widely employed glass for radioactive waste immobilisation). Beyond a certain extent, it is difficult to incorporate the anionic species in commercially

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31

Hernández, Frederick Camila José [Verfasser], and Susana [Akademischer Betreuer] Andrade. "Structural and functional characterization of a novel Ammonium Transport protein from “Candidatus Kuenenia stuttgartiensis” = Strukturelle und funktionelle Charakterisierungeines neuartigen Ammonium Transport Proteins aus"Candidatus Kuenenia stuttgartiensis"." Freiburg : Universität, 2011. http://d-nb.info/1123472424/34.

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32

Marcotte, Tracy Dawn. "Characterization of chloride-induced corrosion products that form in steel-reinforced cementitious materials." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/NQ65251.pdf.

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33

Forrester, Sean Geritt. "Characterization of a macrocyclic lactone receptor subunit from Haemonchus contortus." Thesis, McGill University, 2002. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82872.

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Glutamate-gated chloride channels (GluCls) are the proposed site of action for macrocyclic lactone anthelminthics, such as IVM, and the milbemycins, such as MOX. The objective of this thesis was to determine whether Haemonchus contortus GluCls are important targets for these anthelminthics. To begin to address this we cloned a full length GluCl alpha-subunit cDNA from H. contortus (HcGluCla). This subunit shares a high homology with GluCl subunits from Caenhorhabditis elegans that have been shown to be important targets for IVM, suggesting that HcGluCla is also an IVM target. However, i

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34

Gu, Zhongchun April. "Assessment of reductive dechlorination of vinyl chloride and characterization of enrichments that grow on vinyl chloride as the sole carbon and energy source /." Thesis, Connect to this title online; UW restricted, 2003. http://hdl.handle.net/1773/10169.

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Basgorenay, Burcu. "Preparation And Characterization Of Hydroxyapatite Containing Acrylic Bone Cements." Master's thesis, METU, 2004. http://etd.lib.metu.edu.tr/upload/12605675/index.pdf.

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Acrylic bone cements are one of the most important biomaterials used in orthopaedic surgery and dental applications to fill the cavities or provide mechanical interlock between prosthesis and the bone. Their biocompatibility can be increased by addition of different materials into the formulation, such as hydroxyapatite. Besides all the advantages, bone cements have several drawbacks including tissue necrosis, chemical necrosis, shrinkage of the cement and aseptic loosening. Therefore painstaking research and study are carried out on development of new formulations to improve mechanical and th

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Awobusuyi, Tolulope David. "Concentration of Ammonium from Dilute Aqueous Solutions using Commercially Available Reverse Osmosis Membranes." Thesis, Université d'Ottawa / University of Ottawa, 2016. http://hdl.handle.net/10393/34642.

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Several commercially available reverse osmosis (RO) membranes were characterized with aqueous solutions of ammonium sulfate, potassium triphosphate, and mixtures of these two salts at different feed concentrations, compositions and pressures. The objective of this study was to investigate the rejection of these solutes, in particular the ammonium ion (NH4+), by different RO membranes. The aqueous solutions were assumed to come from an anaerobic digester via a process, currently under investigation by CHFour Biogas Inc., to maintain low concentrations of ammonia in the digester in order to maxi

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Yim, King Fai Evelyn. "Platelet compatibility and surface characterization of amidine surface-modified poly(acrylonitrile-co-vinyl chloride)." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq58718.pdf.

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Rocca, Francesco. "Engineering & characterization of a gfp-based biosensor for ph and chloride intracellular measurements." Doctoral thesis, Università degli studi di Trento, 2014. https://hdl.handle.net/11572/368532.

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ClopHensor, a new fluorescent ratiometric GFP-based biosensor, is a powerful tool for non-invasive pH and chloride quantification in cells. ClopHensor is a chimeric construct, with the pH- and chloride-sensing E2GFP linked to the reference red protein DsRed-monomer, whose fluorescence is used as reference signal. E2GFP dissociation constant of about 50 mM (at pH=7.3) makes it ideal for quantifying physiological chloride concentration. However, chloride affinity of E2GFP strongly depends on pH value in solution: precise chloride measurement requires also a pH measurement. By ratio-imaging techn

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Rocca, Francesco. "Engineering & characterization of a gfp-based biosensor for ph and chloride intracellular measurements." Doctoral thesis, University of Trento, 2014. http://eprints-phd.biblio.unitn.it/1225/1/Tesi_FR.pdf.

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ClopHensor, a new fluorescent ratiometric GFP-based biosensor, is a powerful tool for non-invasive pH and chloride quantification in cells. ClopHensor is a chimeric construct, with the pH- and chloride-sensing E2GFP linked to the reference red protein DsRed-monomer, whose fluorescence is used as reference signal. E2GFP dissociation constant of about 50 mM (at pH=7.3) makes it ideal for quantifying physiological chloride concentration. However, chloride affinity of E2GFP strongly depends on pH value in solution: precise chloride measurement requires also a pH measurement. By ratio-imaging tech

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Pantazis, Antonios. "Characterization of two novel histamine-gated chloride channels from the visual system of Drosophila melanogaster." Thesis, University of Cambridge, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614187.

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Brito, Ana Sofia. "Characterization of the Mep2 transceptor role in yeast filamentation induction." Doctoral thesis, Universite Libre de Bruxelles, 2020. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/313512.

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The dimorphic transition from the yeast to the filamentous form of growth allows cells to explore their environment for more suitable niches and is often crucial for the virulence of pathogenic fungi. In contrast to their Mep1/3 paralogues, fungal Mep2-type ammonium transport proteins of the conserved Mep-Amt-Rh family have been assigned an additional receptor role required to trigger the filamentation signal in response to ammonium scarcity. Here, genetic, kinetic, expression and structure-function analyses were used to shed light on the poorly characterized signaling role of Saccharomyces ce

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Rinaldi, Gino. "An X- and Q-band electron paramagnetic resonance study of Mn²§+ in a single crystal of ammonium chloride-iodide in the temperature range 77--295 K." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/MQ64048.pdf.

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Grigonis, Aidas. "Benzalkonio ir metenamino analogų antimikrobinio aktyvumo nustatymas in vitro ir jo priklausomybė nuo aerozolio dalelių krūvio." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2007. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2007~D_20070214_152534-59492.

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Antibacterial effectiveness in vitro of the original quaternary ammonium compounds that were synthesized in the Laboratory of Biologically active substances was determined and the dependence of this activity upon chemical structure of the compound was established. Also generalisations have been made concerning the regularity of this dependency, the effectiveness of the compounds was compared to benzalkonium chloride, their advantages and disadvantages were discussed. Acute toxicity of the most effective compound was established and compared to that of benzalkonium chloride. It was found that

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ABU-DAABES, MALYUBA ALI. "SYNTHESIS AND CHARACTERIZATION OF NANO-STRUCTURED CHELATING ADSORBENTS FOR THE DIRECT REMOVAL OF MERCURY VAPOR FROM FLUE-GASES." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1108417592.

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Moussa, Mariam. "Loading of dendrimer nanoparticles into layer-by-layer assembled Poly(diallyl dimethyl ammonium) chloride-(Poly(acrylic acid))n Multilayer Films : Particle Electrokinetics, Film Structure Dynamics and Elasticity." Thesis, Université de Lorraine, 2017. http://www.theses.fr/2017LORR0383/document.

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Une analyse détaillée des propriétés physico-chimiques des nanoparticules (NP) anthropogéniques est nécessaire pour comprendre à un niveau mécanistique leurs interactions/toxicité potentielle avec/envers les composants biotiques des systèmes aquatiques naturels. Une telle analyse est également requise pour réaliser une évaluation complète et une optimisation de la performance des méthodes d’(ultra)filtration développées pour circonscrire le relargage des NPs dans les milieux aquatiques. Dans ce contexte, l'objectif de cette thèse de doctorat était de déchiffrer les processus physico-chimiques

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Droschke, Sonja. "X-Ray Photoemission Spectroscopy Characterization of Fe(II)- and Fe(III)-Phthalocyanine Molecular Films." Thesis, Uppsala universitet, Molekyl- och kondenserade materiens fysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-257183.

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This thesis investigates the electronic structure of iron phthalocyanine (Fe(II)Pc) andiron phthalocyanine chloride (Fe(III)PcCl) immobilized on surfaces. For this purposetwo different deposition methods are used and compared: smearing the molecularpowder under atmosphere condition and evaporation of a molecular layer inultra-high vacuum. The electronic states of FePc and FePcCl are probed withphotoelectron spectroscopy (PES) and compared in relation to the ionic state of thecentral metal (Fe). The PE spectra show that evaporation of FePcCl at around 350°Cresults in dissociation of the chlorin

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Bezerra, Roseane Madeira. "NÃveis de cloro para codornas japonesas (Coturnix coturnix japonica) nas fases de crescimento e produÃÃo." Universidade Federal do CearÃ, 2010. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=5909.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>Com o objetivo de avaliar os efeitos dos nÃveis de cloro da raÃÃo nas fases de crescimento e produÃÃo de codornas japonesas foram realizados dois experimentos, nos quais, foram avaliados os nÃveis de 0,07; 0,12; 0,17; 0,22; 0,27 e 0,32% de cloro. No primeiro experimento (fase de crescimento), 384 codornas com um dia de idade distribuÃdas em um delineamento inteiramente casualizado, com seis tratamentos de oito repetiÃÃes de oito aves cada. Conforme os resultados, no perÃodo de 1 a 42 dias, com o acrÃscimo do nÃvel de cloro na raÃÃo

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Mdhlovu, Johan. "Optimisation of water-in-oil microemulsion formulation stabilised by nonylphenol ethoxylated phosphate ester." Diss., Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-03062006-093400.

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Ma, Aihui. "Synthesis and characterization of miniaturized fluorescence sensors for aqueous and cellular measurements." ScholarWorks@UNO, 2005. http://louisdl.louislibraries.org/u?/NOD,240.

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Thesis (Ph. D.)--University of New Orleans, 2005.<br>Title from electronic submission form. "A thesis ... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Chemistry."--Dissertation t.p. Vita. Includes bibliographical references.

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Siddiqui, Salma. "Molecular characterization of GABA receptor subunits from the parasitic nematode Haemonchus contortus." Thesis, UOIT, 2009. http://hdl.handle.net/10155/31.

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Haemonchus contortus is a parasitic nematode that is controlled by several nematocides which target ion channels. We have identified two H. contortus ion channel genes, Hcounc- 49B and C that encode two GABA-gated chloride channel subunits. Electrophysiological analysis shows that the Hco-UNC-49B subunit forms a functional homomeric channel in Xenopus laevis oocytes that produces a robust response to GABA and is highly sensitive to picrotoxin. In contrast, Hco-UNC-49C alone does not respond to GABA but can assemble with Hco-UNC-49B to form a heteromeric channel with an increased sensitivity to

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