Relevant bibliographies by topics / PH Dependent delivery system

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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 'PH Dependent delivery system'

Author: Grafiati
Published: 7 June 2025
Last updated: 2 August 2025

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Journal articles on the topic "PH Dependent delivery system"

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Ambekar, Sakshi, Shrikant Gadhe, Aniket Shinde, Rushikesh Sonawane, Amit Kakad, and M. R. N. Shaikh. "Overview: Review on colon drug delivery system." Journal of Pharmaceutical and Biological Sciences 12, no. 2 (2025): 79–83. https://doi.org/10.18231/j.jpbs.2024.013.

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The goal of this review is to comprehend existing methods for colon-targeting dosage forms that use microbially triggered (such as prodrugs and polysaccharide-based systems), pressure-dependent, pH-sensitive, osmotically controlled, and timed release systems. Over the past 20 years, colonic-focused drug transfer has become more and more significant due to the capacity to transfer therapeutic peptides and proteins as well as medications for the treatment of various colon disorders. With varying degrees of effectiveness, a sort of traditional approach that takes into account prodrugs, pH, time-d
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Pawłowski, Łukasz. "pH-dependent composite coatings for controlled drug delivery system - Review." INŻYNIERIA MATERIAŁOWA 1, no. 3 (2019): 4–9. http://dx.doi.org/10.15199/28.2019.3.1.

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Yang, Mingshi, Fude Cui, Bengang You, et al. "A novel pH-dependent gradient-release delivery system for nitrendipine." Journal of Controlled Release 98, no. 2 (2004): 219–29. http://dx.doi.org/10.1016/j.jconrel.2004.04.022.

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Yang, Mingshi, Fude Cui, Bengang You, Liang Wang, Peng Yue, and Yoshiaki Kawashima. "A novel pH-dependent gradient-release delivery system for nitrendipine." International Journal of Pharmaceutics 286, no. 1-2 (2004): 99–109. http://dx.doi.org/10.1016/j.ijpharm.2004.08.007.

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Bi, Yu Shui, Xiao Xiao Zhang, Xiao Qun Cao, and Xian Feng Meng. "Research and Application of Oral Colon Targeted Drug Delivery System." Advanced Materials Research 1053 (October 2014): 456–60. http://dx.doi.org/10.4028/www.scientific.net/amr.1053.456.

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Oral colon targeted drug delivery system can be divided into pH dependent, time-dependent, enzymatic degradation etc. according to the ways of drug delivery. Mechanism of drug delivery, preparation method and application of oral colon targeted drug delivery system were introduced. In addition, it previewed the research direction of colon targeted drug delivery in the future, to provide a reference for the targeted new dosage form.
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Qi, Meiling, Peng Wang, and Dezheng Wu. "A Novel pH- and Time-Dependent System for Colonic Drug Delivery." Drug Development and Industrial Pharmacy 29, no. 6 (2003): 661–67. http://dx.doi.org/10.1081/ddc-120021315.

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Gvozdeva, Yana, and Radiana Staynova. "pH-Dependent Drug Delivery Systems for Ulcerative Colitis Treatment." Pharmaceutics 17, no. 2 (2025): 226. https://doi.org/10.3390/pharmaceutics17020226.

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Inflammatory bowel diseases (IBDs), such as ulcerative colitis (UC) or Crohn’s disease, are becoming a growing global problem due to the limitations of current treatments, which fail to address the needs of patients effectively. UC is characterized by the widespread inflammation of the mucosal lining, affecting both the rectum and the entire length of the colon. Over the past forty years, traditional treatments for IBDs have primarily relied on anti-inflammatory drugs and immunosuppressive medications. Treatment could be more effective if drugs could be specifically targeted to act directly on
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Gao, Ruijuan, Rajendra Narayan Mitra, Min Zheng, Kai Wang, Jesse Christine Dahringer, and Zongchao Han. "Developing Nanoceria-Based pH-Dependent Cancer-Directed Drug Delivery System for Retinoblastoma." Advanced Functional Materials 28, no. 52 (2018): 1806248. http://dx.doi.org/10.1002/adfm.201806248.

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Shelke Amruta P, Wagh Priti A, Nikam Sakshi M, and Bhosale Jaydeep J. "Pulsatile drug delivery system: A review." World Journal of Biology Pharmacy and Health Sciences 21, no. 2 (2025): 457–66. https://doi.org/10.30574/wjbphs.2025.21.2.0187.

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Pulsatile Drug Delivery Systems (PDDS) are increasingly recognized for their ability to deliver drugs at specific times, tailored to the pathophysiological needs of a disease. This approach enhances therapeutic efficacy and patient compliance. The core concept of PDDS involves a defined lag-time before a rapid drug release, which can be particularly beneficial for treatments requiring synchronization with the body’s natural circadian rhythms. By aligning peak plasma concentrations with these biological cycles, PDDS can improve both the safety and effectiveness of drugs over a 24-hour period. T
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Rabišková, Miloslava, Jiří Třináctý, Tomáš Sýkora, and Petr Doležal. "Post-ruminal delivery systems." Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis 52, no. 2 (2004): 143–48. http://dx.doi.org/10.11118/actaun200452020143.

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Livestock industry and organization for animal wellfare underlie the need for drug and nutrient delivery systems for ruminants that protect active ingredients from ruminal fermentation. To deliver drugs or nutrients directly to the small intestine for absorption, therapeutical systems must meet the safety and cost criteria. An effective post-ruminal delivery system is a prerequisite to implement some significant advances in animal nutrition and health in ruminants. Comparing with the products developed for human use, cost constraints have impeded the development of effective post-ruminal deliv
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Dissertations / Theses on the topic "PH Dependent delivery system"

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FERRAZ, Leslie Raphael de Moura. "Desenvolvimento e avaliação da liberação in vitro de drug delivery system pH-dependente à base de benznidazol e ZIF-8 visando a obtenção de uma terapia alternativa para a doença de Chagas." Universidade Federal de Pernambuco, 2017. https://repositorio.ufpe.br/handle/123456789/23771.

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Submitted by Rafael Santana (rafael.silvasantana@ufpe.br) on 2018-02-20T18:35:23Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Dissertacao TIAGO FRANCA BARRETO versao final revisada com ficha.pdf: 1881406 bytes, checksum: 12e01eebda9019e211cef41ad935a421 (MD5)<br>Made available in DSpace on 2018-02-20T18:35:23Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Dissertacao TIAGO FRANCA BARRETO versao final revisada com ficha.pdf: 1881406 bytes, checksum: 12e01eebda9019e211cef41ad935a421 (MD5) P
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Song, Lei. "Development of a targeted nanoscale drug delivery system using pH-responsive DNA-nanoparticle conjugate." Thesis, University of Leeds, 2013. http://etheses.whiterose.ac.uk/5270/.

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Cancer is one of the most devastating diseases facing society, accounting for some 8 millions deaths worldwide in 2008 alone, and, more alarmingly, the number is predicted to increase to 13.1 million in 2030. Although conventional cancer treatments, such as radiotherapy and chemotherapy, have provided profound beneficial effects for millions of cancer patients, serious side effects cannot be avoided, mostly due to the lack of specific targeting of these treatments. A long-term goal for the pharmaceutical and healthcare industries is to develop intelligent drug delivery systems that can selecti
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Fischel-Ghodsian, F. "Modelling and simulation in the development of a polymeric glucose-dependent insulin delivery system." Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.379989.

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Al-Mamari, Ahmed. "Biocontainment system for bacterial antigen delivery carriers." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/28793.

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Genetically modified organisms (GMOs) are confined physically in order to contain their spread in nature and to minimise chances of horizontal gene transfer. However, with the potential that GMOs hold as cheap, reliable and efficient micro-machines, their eventual uncontrolled release into the wider space is becoming more likely. Indeed, their application as environmental sensors is largely increasing. Nevertheless, the field of synthetic biology may also afford solutions to the problem. A major potential application of GMOs is the delivery of antigens to human and animal hosts, through the ut
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Pöhlmann, Christoph, Manuela Brandt, Dorothea S. Mottok, et al. "Periplasmic Delivery of Biologically Active Human Interleukin-10 in Escherichia coli via a Sec-Dependent Signal Peptide." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-137673.

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Interleukin-10 (IL-10) is a potent anti-inflammatory cytokine, with therapeutic applications in inflammatory bowel disease. For the in situ delivery of IL-10 by Escherichia coli as carrier chassis, a modified transporter was designed with the ability to secrete biologically active IL-10. De novo DNA synthesis comprised a 561-bp fragment encoding the signal sequence of the E. coli outer membrane protein F fused in frame to an E. coli codon-optimized mature human IL-10 gene under control of a T7 promoter. The construct was overexpressed in E. coli laboratory strains, E. coli BL21 (DE3) and E. co
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Pöhlmann, Christoph, Manuela Brandt, Dorothea S. Mottok, et al. "Periplasmic Delivery of Biologically Active Human Interleukin-10 in Escherichia coli via a Sec-Dependent Signal Peptide." Karger, 2012. https://tud.qucosa.de/id/qucosa%3A27748.

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Interleukin-10 (IL-10) is a potent anti-inflammatory cytokine, with therapeutic applications in inflammatory bowel disease. For the in situ delivery of IL-10 by Escherichia coli as carrier chassis, a modified transporter was designed with the ability to secrete biologically active IL-10. De novo DNA synthesis comprised a 561-bp fragment encoding the signal sequence of the E. coli outer membrane protein F fused in frame to an E. coli codon-optimized mature human IL-10 gene under control of a T7 promoter. The construct was overexpressed in E. coli laboratory strains, E. coli BL21 (DE3) and E. co
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Giret, Simon. "Nanoparticules de silice hybride à empreinte moléculaire comme transporteur pH-sensible de principes actifs." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2014. http://www.theses.fr/2014ENCM0006.

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Ce travail de thèse s'inscrit dans le cadre de la recherche contre le cancer, l'un des enjeux majeurs de notre société. L'objectif est d'optimiser l'action des principes actifs notamment en réduisant leurs effets secondaires chez le patient. Pour cela nous souhaitons développer des nanotransporteurs siliciques pH-sensibles capables de s'accumuler spécifiquement dans les tumeurs solides grâce à l'effet EPR.Les travaux présentés dans ce manuscrit décrivent donc la synthèse de nouveaux dérivés actifs du 5-Fluorouracile capables de former un complexe via liaisons H avec un précurseur de silice hyb
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Fonseca, Filipa Ribeiro da. "Establishment of bioengineered glucose-responsive nanoparticles for type 2 diabetes mellitus therapy." Master's thesis, Universidade Nova de Lisboa. Instituto de Tecnologia Química e Biológica António Xavier, 2019. http://hdl.handle.net/10362/130074.

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Dissertation presented to obtain the Master degree in Biochemistry for Health<br>"Type 2 diabetes mellitus (T2DM) is one of the biggest health problems in the world. Glucagon like peptide-1, an endogenous gastrointestinal incretin hormone that stimulates insulin secretion, is considered an attractive therapeutic agent for T2DM treatment. Nevertheless, its short half-life has led to the development of longer half-life GLP-1 analogues, as exenatide. Still, current dosage forms for exenatide delivery are not exempt of shortcomings. Nanotechnology-based systems may offer several advantages over co
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Bastos, Mônica Danielle Ribeiro. "Monitoramento do pH e dos níveis de inserção óssea antes e após tratamento com sistemas bioadesivos poliméricos para a liberação modificada de metronidazol intrabolsa periodontal." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/58/58131/tde-23022016-150459/.

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O objetivo deste estudo foi avaliar clinicamente em humanos sistemas semissólidos (géis) e filmes contendo sal de metronidazol e conjugado de benzoato de metronidazol associados à raspagem e alisamento radicular (RAR), para o tratamento de periodontite. Foram avaliados o pH do fluido crevicular, os níveis clínicos de inserção óssea de suporte aos dentes envolvidos no tratamento periodontal, antes e após os tratamentos, além do perfil de liberação dos fármacos por meio de cromatografia líquida de alta eficiência (CLAE). Participaram do estudo 45 pacientes da Faculdade de Odontologia de Ribeirão
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Bergström, David, and Jacob Heyle. "Förhindra förseningar i distributionscentraler : Med syfte att öka leveransprecision." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Industriell organisation och produktion, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-37813.

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Abstract  Purpose – The purpose of the study is to investigate how distribution centers can prevent delays to achieve higher on-time delivery.  To fulfill the purpose of the study three study questions have been conducted:  • What factors causes delays in distribution centers?  • Why do delays occur in distribution centers?  • How can distribution centers prevent delays to achieve higher on-time delivery?  Method – A qualitative approach has been used throughout the study to enable fulfilment of the study´s purpose. The study has implemented a case study at a distribution center to investigate
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Books on the topic "PH Dependent delivery system"

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Columb, Malachy O. Local anaesthetic agents. Edited by Michel M. R. F. Struys. Oxford University Press, 2017. http://dx.doi.org/10.1093/med/9780199642045.003.0017.

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Local anaesthetic agents cause a pharmacologically induced reversible neuropathy characterized by axonal conduction blockade. They act by blocking the sodium ionophore and exhibit membrane stabilizing activity by inhibiting initiation and propagation of action potentials. They are weak bases consisting of three components: a lipophilic aromatic ring, a link, and a hydrophilic amine. The chemical link classifies them as esters or amides. Local anaesthetics diffuse through the axolemma as unionized free-base and block the ionophore in the quaternary ammonium ionized form. The speed of onset of b
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Jacquemyn, Yves, and Anneke Kwee. Antenatal and intrapartum fetal evaluation. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780198713333.003.0006.

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Antenatal and intrapartum fetal monitoring aim to identify the beginning of the process of fetal hypoxia before irreversible fetal damage has taken place. Fetal movement counting by the mother has not been reported to be of any benefit. The biophysical profile score, incorporating ultrasound and fetal heart rate monitoring, has not been proven to reduce perinatal mortality in randomized trials. Doppler ultrasound allows the exploration of the perfusion of different fetal organ systems and provides data on possible hypoxia and fetal anaemia. Maternal uterine artery Doppler can be used to select
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Muders, Thomas, and Christian Putensen. Pressure-controlled mechanical ventilation. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199600830.003.0096.

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Beside reduction in tidal volume limiting peak airway pressure minimizes the risk for ventilator-associated-lung-injury in patients with acute respiratory distress syndrome. Pressure-controlled, time-cycled ventilation (PCV) enables the physician to keep airway pressures under strict limits by presetting inspiratory and expiratory pressures, and cycle times. PCV results in a square-waved airway pressure and a decelerating inspiratory gas flow holding the alveoli inflated for the preset time. Preset pressures and cycle times, and respiratory system mechanics affect alveolar and intrinsic positi
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Book chapters on the topic "PH Dependent delivery system"

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Shilpi, Satish, Khyati Saini, Pranali Chimaniya, et al. "Stimuli-Responsive Drug Delivery Systems: Magnetically, Thermally and pH Assisted Drug Delivery System." In Novel Carrier Systems for Targeted and Controlled Drug Delivery. Springer Nature Singapore, 2024. https://doi.org/10.1007/978-981-97-4970-6_17.

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Theis, J. G. W., H. Dellweg, E. Perzborn, and R. Groß. "pH-Dependent Binding of the TXA2/PGH2-Receptor of Human Platelet Membranes to Various Ligands." In Prostaglandins in the Cardiovascular System. Birkhäuser Basel, 1992. http://dx.doi.org/10.1007/978-3-0348-7262-1_31.

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Zardari, Noorul Hassan, Sharif Shirazi, Irena Naubi, and Siti Mariam Akilah Mohd Yusoff. "Is Farmer’s Agricultural Income Dependent on Type of Irrigation Delivery System?" In ISFRAM 2014. Springer Singapore, 2015. http://dx.doi.org/10.1007/978-981-287-365-1_14.

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Uthansakul, Phuwich, Pichchaya Petchsritong, and Adis Khetubol. "Development of a pH-Responsive Bio-robotics for Targeted Drug Delivery to Lung Cancer in the Vascular System." In Lecture Notes in Computer Science. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-97554-7_24.

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Tarannum, H. "Colon Targeted Nano Drug Delivery Systems." In Nanoparticle Toxicity and Compatibility. Materials Research Forum LLC, 2024. http://dx.doi.org/10.21741/9781644902998-5.

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The colon is the attractive target for the delivery of nano formulation due to distinct advantages such as near-neutral pH, longer transit time, and reduced enzymatic activity. Colon-specific drug delivery not only increases the bioavailability of the drug at the target site but also reduces the side effects and multiple dosing. In recent studies, colon-targeted drug delivery systems are gaining importance to treat local pathologies of the colon such as anorectal problems, Crohn’s disease, inflammatory bowel disease, and colonic cancer and also for the systemic delivery of protein and peptide
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Giri, Sanchari, Rajdeep Ganguly, and Howa Begam. "APPLICATIONS OF CALCIUM PHOSPHATE NANOPARTICLES IN DRUG DELIVERY SYSTEM." In Futuristic Trends in Chemical Material Sciences & Nano Technology Volume 3 Book 3. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3becm3ch8.

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Calcium phosphates (CaP), the major mineral composition of bone and teeth, are exceptionally biocompatible and frequently used in bone tissue engineering. The biodegradable calcium phosphates have a high affinity for nucleic acids and therapeutic prescription drugs. Calcium phosphate nanoparticles(CaPNPs) can also be employed as excellent delivery vehicles to transport therapy into tumor cells due to their high affinity for binding to therapeutic medicines and nucleic acids. CaPs' simplicity of manufacture and functionalization, as well as intrinsic features such as pH dependent solubility, of
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Moynihan, Humphrey A., and Abina M. Crean. "Pharmaceutical Disperse Systems." In The Physicochemical Basis of Pharmaceuticals. Oxford University Press, 2009. http://dx.doi.org/10.1093/hesc/9780199232840.003.0006.

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This chapter assesses the use of disperse systems as pharmaceutical drug-delivery systems (dosage forms). There are a wide range of dosage forms that can be classified as pharmaceutical disperse systems, and their properties can vary widely depending on the type of disperse system. These include pharmaceutical suspensions and gels. Pharmaceutical suspensions injected intramuscularly and subcutaneously can be designed with extended drug-release characteristics. Meanwhile, gels can be formed from dispersed lyophobic or lypophilic colloidal material. The main factors that influence the stability
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Mount, David B. "Electrolyte Disorders." In The Brigham Intensive Review of Internal Medicine. Oxford University Press, 2014. http://dx.doi.org/10.1093/med/9780199358274.003.0058.

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The regulation of acid–base balance in the body underlies the importance of pH in a variety of cellular and subcellular biological functions; for example, regulation of protein synthesis and intermediate carbohydrate metabolism are pH-sensitive processes. Clinically, this is apparent by the failure to grow normally in an acidemic environment and explains an increase in anaerobic glycolysis in alkalemia, due to an increase in a rate-limiting step of glycolysis phosphofructokinase-l. pH is important in numerous transport functions across membranes, such as increasing acid extrusion from cells wh
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Pahuja, Sanuj, Rohit Prasad, Utkarsh Diwakar, and Anil Kumar. "Synthesis of CMTKG Acrylamide-Urea Hydrogel and Its Application as a Fertilizer Delivery System." In Advances in Transdisciplinary Engineering. IOS Press, 2022. http://dx.doi.org/10.3233/atde220746.

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Nitrogen (N) is a macronutrient which is required for growth of plants. The most common way of providing nitrogen to the plants is through urea fertilizers. With the increasing demand for crops, the usage and demand of urea as a fertilizer has also been increasing. A lot of nitrogen that is supplied in form of fertilizers actually gets wasted. Almost 40–70 % nitrogen supplied through urea is not utilized by plants, generating environmental problems like eutrophication, therefore there is a need of developing a fertilizer that will stop this wastage. The aim of this study was to use natural pro
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"A study on the importance of controlling precursor concentration, pH, polymer concentration and molecular mass on obtaining well-defined magnetic iron oxide nanoparticles using γ-irradiation." In Book of Abstracts - RAD 2025 Conference. RAD Centre, Niš, Serbia, 2025. https://doi.org/10.21175/rad.abstr.book.2025.32.1.

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Magnetic iron oxide nanoparticles (NPs) are used in various applications, including magnetic storage devices, environmental remediation technologies, magnetic hyperthermia and drug delivery. Iron chemistry is highly diverse due to the versatile behavior of iron in aqueous media. The presence of two stable oxidation states (+2 and +3) and their relative concentrations influence the final product. Extensive research has been conducted on the synthesis of iron oxides. However, the radiolytic synthesis of iron oxide NPs remains much less explored. γ-irradiation is environmentally friendly, efficie
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Conference papers on the topic "PH Dependent delivery system"

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Yue, Zhiwei (David), Megan Westerman, Chunli Li, Ping Chen, and John Hazlewood. "Mitigation of Scaling Challenges for Long-term Well Shut-ins under Ultra-High Temperature." In CORROSION 2021. AMPP, 2021. https://doi.org/10.5006/c2021-16995.

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Abstract Long-term well shut-ins have become a common practice for operators to defer oil production in an oversupplied market. This paper discusses several scale challenges that are expected under such circumstances. Two specific cases were explored in detail in terms of product development and performance validation under various scenarios. The first category of wells had high-water production, featuring extreme levels of calcium and iron, as well as an ultra-high, bottom-hole temperature of 350°F. These wells began experiencing significant calcium carbonate scale precipitation when bottom-h
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Schutt, Hans U., and Peter R. Rhodes. "Corrosion in the Aqueous Hydrogen Sulfide, Ammonia, Oxygen System." In CORROSION 1995. NACE International, 1995. https://doi.org/10.5006/c1995-95331.

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Abstract Rotating cylinder experiments have demonstrated significant corrosion rates of steel exposed to oxygenated, hydrogen sulfide and ammonia containing aqueous solutions to be dependent on pH, presence of oxygen, hydrogen sulfide concentration and flow. Corrosion is more severe than expected basis a review of published reports (considering systems at relatively low ammonium hydrosulfide concentrations and above a pH of 6[1-10]). In particular, the dependence of carbon steel corrosion rates on pH and the impact of oxygen in this system can be strong, but only under conditions prior to reac
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Arrington, Steve, and Gary Bradley. "Service Water System Cleaning with Ammoniated Citric Acid." In CORROSION 1987. NACE International, 1987. https://doi.org/10.5006/c1987-87387.

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Abstract Chemical cleaning of service water systems with ammoniated citric acid has revealed the need for more precise monitoring and control of solvent parameters than normally required in other uses of this solvent. Precipitation was encountered in early attempts to utilize this solvent to remove the large amounts of iron oxide scale commonly encountered in these systems. Laboratory analysis of the precipitate formed in these solvents revealed it was most likely a hydrated iron citrate of approximate composition FeC6H6O7·H2O. Laboratory experiments designed to determine the cause of precipit
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Okafor, P. C., C. B. Liu, and Y. G. Zheng. "Corrosion Inhibition of Pipeline Steels in CO2-Saturate System by an Imidazoline Based Inhibitor." In CORROSION 2016. NACE International, 2016. https://doi.org/10.5006/c2016-07601.

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Abstract The corrosion inhibition characteristics of an imidazoline based inhibitor (IMI) on N80 and P110 pipeline steel in CO2-saturated simulated produced water and NaCl solutions was studied at pH 4 and at 25, 40 and 60°C using electrochemical methods. IMI was found to inhibit the corrosion of the carbon steels in the solution to a maximum of 98.8% for N80 in the simulated produce water and over 99% in the NaCl solution for both N80 and P110. Inhibition efficiency shows no significant dependence on the range of IMI concentration studied but dependent on the composition of the metal and corr
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Delwiche, Alex, and Patrick Lydon. "The Water pH and Gas Evolution Risks Associated with the Use of Aluminium and Zinc Anodes for the Internal Cathodic Protection of Offshore Monopiles." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-10494.

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Abstract In 2012, a cathodic protection (CP) trial was undertaken to establish the current requirements to protect the submerged and buried bare steel internal surfaces of monopiled windturbine structures in the North Sea. Aluminium alloy anodes were utilized for the CP trial system and a remote monitoring system was also installed to measure the time dependent variations in anode current, structure to seawater potential, cathode current density and monopile hydrogen gas concentration produced from operation of the CP system. Within a few weeks of the trial commencing, the seawater pH inside t
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Bernardo, Riky, J. Shanmugam, and Z. F. Hazos. "General and Localized Corrosion in a Tail Gas Treating Quencher Column." In CORROSION 2015. NACE International, 2015. https://doi.org/10.5006/c2015-05898.

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Abstract The quencher column is a part of Tail Gas Treating (TGT) section in Sulfur Recovery Unit (SRU). The column is used to cool the gas containing H2S, CO2 and SO2 by using direct counter-current contact with circulation water. Soda caustic (NaOH) is injected to the quench water to neutralize the acid in the solution. The quench water pH is one of the main parameters of maintaining the integrity of the whole quench water system. Failure to maintain the quench water pH within safe limits will cause negative effects to the system. pH neutralization is a complex issue since the required amoun
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Delwiche, Alex, Patrick Lydon, and Isaac Tavares. "Concerns over Utilizing Aluminium Alloy Anodes in Sealed Environments." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-08956.

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Abstract In 2012, a cathodic protection (CP) trial was undertaken to establish the current requirements to protect the submerged and buried bare steel internal surfaces of monopile windturbine structures in the North Sea. Aluminium alloy anodes were utilized for the CP system and a remote monitoring system was also installed to measure the time dependent variations in anode current, structure to seawater potential, cathode current density and monopile hydrogen gas concentration produced from operation of the CP system. The possibility of hydrogen production within a confined space from the ope
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Dugarte, M., and A. A. Sagüés. "Temperature Effects on a Galvanic Anode-Steel in Concrete System." In CORROSION 2014. NACE International, 2014. https://doi.org/10.5006/c2014-4479.

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Abstract Temperature changes affect current delivery and electrochemical assessment of galvanic anode - steel in concrete systems. Interfacial corrosion processes are thermally activated and hence temperature dependent. In addition, concrete resistivity varies with temperature with consequent change in any resistive polarization component that may be present. The present work explores temperature correction procedures. Galvanic current, electrode potentials and resistivity measurements were determined as a function of concrete temperature in outdoors reinforced concrete slabs where sacrificial
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He, Wenle, Leandro Finzetto, Katarina Persson, and Per Olsson-Artberger. "UNS N08029 and UNS N08825 Tubes for Chemical Injections." In CORROSION 2019. NACE International, 2019. https://doi.org/10.5006/c2019-13162.

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Absrract Pitting corrosion resistance by critical pitting temperature (CPT) has been determined per ASTM G150 on the full-size control line &amp; chemical line specimens of UNS N08029 and UNS N08825 in 1M NaCl solution. With outer- and inner tube surfaces in existing delivery conditions, the full-size tube sections of UNS N08029 showed similar CPT obtained from specimen coupons of cold worked UNS N08029 OCTG material. The CPT was 70°C for UNS N08029 and 30°C ~ 45°C for UNS N08825, which was mainly dependent on pitting resistant equivalent (PRE) of the materials. Effect of chloride concentratio
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Olsen, S., and A. Dugstad. "Corrosion Under Dewing Conditions." In CORROSION 1991. NACE International, 1991. https://doi.org/10.5006/c1991-91472.

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Abstract Experiments to study CO2 corrosion rate of carbon steel under water condensing conditions have been carried out. Carbon steel specimens were cooled under controlled conditions giving a defined condensing rate. The condensing water was rapidly saturated with iron ions from the corrosion process leading to an increased pH and formation of partly protective iron carbonate films. The films slow down the corrosion rate and at a certain temperature and CO2 partial pressure, the corrosion rate in a condensing system will mainly be dependent on the rate of condensation and transport of corros
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Reports on the topic "PH Dependent delivery system"

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McKenna, Patrick, and Mark Evans. Emergency Relief and complex service delivery: Towards better outcomes. Queensland University of Technology, 2021. http://dx.doi.org/10.5204/rep.eprints.211133.

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Emergency Relief (ER) is a Department of Social Services (DSS) funded program, delivered by 197 community organisations (ER Providers) across Australia, to assist people facing a financial crisis with financial/material aid and referrals to other support programs. ER has been playing this important role in Australian communities since 1979. Without ER, more people living in Australia who experience a financial crisis might face further harm such as crippling debt or homelessness. The Emergency Relief National Coordination Group (NCG) was established in April 2020 at the start of the COVID-19 p
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Elbaum, Michael, and Peter J. Christie. Type IV Secretion System of Agrobacterium tumefaciens: Components and Structures. United States Department of Agriculture, 2013. http://dx.doi.org/10.32747/2013.7699848.bard.

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Objectives: The overall goal of the project was to build an ultrastructural model of the Agrobacterium tumefaciens type IV secretion system (T4SS) based on electron microscopy, genetics, and immunolocalization of its components. There were four original aims: Aim 1: Define the contributions of contact-dependent and -independent plant signals to formation of novel morphological changes at the A. tumefaciens polar membrane. Aim 2: Genetic basis for morphological changes at the A. tumefaciens polar membrane. Aim 3: Immuno-localization of VirB proteins Aim 4: Structural definition of the substrate
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กาญจนทัต, อภิชาติ. โปรตีนไฮโดรไลเสตจากเมล็ดผลไม้ไทยเพื่อการบำบัดโรค : รายงานวิจัยฉบับสมบูรณ์ (ปีที่ 1). จุฬาลงกรณ์มหาวิทยาลัย, 2014. https://doi.org/10.58837/chula.res.2014.89.

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Blood pressure regulation is partially dependent on the renin-angiotensin system; renin acts on angiotensinogen to release angiotensin-I, which is further converted into the angiotensin II by the angiotensin I-converting enzyme (ACE). ACE plays a key physiological role in the regulation of blood pressure by virtue of two different reactions that it catalyzes: conversion of the inactive angiotensin I to the powerful vasoconstrictor angiotensin II, and inactivation of the vasodilator bradykinin. Crude extract and ammonium sulphate cut protein extracts, and their pepsin-pancreatin hydrolysates, f
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Bonnett, Michaela, Meaghan Kennedy, Odiraa Okala, and Teri Garstka. Precision Public Health: Empowering Communities with Hyperlocal Data for Targeted Interventions and Improved Outcomes. Orange Sparkle Ball, 2024. http://dx.doi.org/10.61152/sktq6431.

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Background Precision public health is an effective strategy for reaching the last mile in service delivery, but is frequently hampered by its dependence on unattainable data standards and the non-transferability of the solutions designed. This paper proposes a five-part system involving 1) dynamic data governance, 2) hyperlocal community data, 3) data synthesis and analysis, 4) the design and implementation of precision interventions, and 5) correlation between community data and traditional outcome data. Recent studies of community network data have found the connectedness of communities to b
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