Bibliografie tematiche / PH

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Letteratura scientifica selezionata sul tema "PH"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 29 luglio 2024

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Articoli di riviste sul tema "PH"

1

Machihara, Fumiaki. "FIRST PASSAGE TIMES OF PH/PH/1/K AND PH/PH/1 QUEUES". Journal of the Operations Research Society of Japan 30, n. 1 (1987): 1–26. http://dx.doi.org/10.15807/jorsj.30.1.

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Jaques, D., J. R. Clark, D. E. Chebi, P. E. Fanwick e I. P. Rothwell. "[Mo{P(Ph)2OC6H3(Ph)(η6-Ph)}(CO)2]". Acta Crystallographica Section C Crystal Structure Communications 50, n. 6 (15 giugno 1994): 898–99. http://dx.doi.org/10.1107/s0108270193011746.

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Sharma, Brahama D. "Myths about pH and pH meters". Journal of Chemical Education 73, n. 6 (giugno 1996): 598. http://dx.doi.org/10.1021/ed073p598.3.

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Alper, Seth L., Marina N. Chernova e Andrew K. Stewart. "How pH Regulates a pH Regulator". Cell Biochemistry and Biophysics 36, n. 2-3 (2002): 123–36. http://dx.doi.org/10.1385/cbb:36:2-3:123.

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Gustafsson, T. K., e K. V. Waller. "Myths about pH and pH control". AIChE Journal 32, n. 2 (febbraio 1986): 335–37. http://dx.doi.org/10.1002/aic.690320226.

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Reddy, R. R., Y. Nazeer Ahammed, A. Srinivasa Rao e T. V. R. Rao. "Dissociation energies of PH and PH+". Journal of Quantitative Spectroscopy and Radiative Transfer 54, n. 6 (dicembre 1995): 1035–38. http://dx.doi.org/10.1016/0022-4073(95)00121-z.

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SHIN, YANG WOO, e DUG HEE MOON. "APPROXIMATION OF PH/PH/c RETRIAL QUEUE WITH PH-RETRIAL TIME". Asia-Pacific Journal of Operational Research 31, n. 02 (aprile 2014): 1440010. http://dx.doi.org/10.1142/s0217595914400107.

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Abstract (sommario):
We consider the PH/PH/c retrial queues with PH-retrial time. Approximation formulae for the distribution of the number of customers in service facility, sojourn time distribution and the mean number of customers in orbit are presented. We provide an approximation for GI/G/c retrial queue with general retrial time by approximating the general distribution with phase type distribution. Some numerical results are presented.
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Oelßner, W., H. Kaden e H. Bellée. "ISFET-pH-Meßsonde zur Kontrolle des vaginalen pH-Wertes - ISFET pH Measuring Probe for Vaginal pH Monitoring". Biomedizinische Technik/Biomedical Engineering 38, n. 3 (1993): 38–41. http://dx.doi.org/10.1515/bmte.1993.38.3.38.

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KATO, AKIHIKO, YUKO KONNO, YOSHIKI YANAGIDA, MASAHARU YANASATO, TOMIO TAGUCHI, RYOICHI MOTOHASHI e TERUAKI KATSUBE. "“ETOX pH SENSOR” AS pH MEASURING ELECTRODE". Analytical Sciences 7, Supple (1991): 1577–80. http://dx.doi.org/10.2116/analsci.7.supple_1577.

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DOBKIN, ERIC D., ANDRE VALCOUR, CAROL ROHER McCLOSKEY, LISA ALLEN, JOSEPH C. KAMBE, ELLEN GLEASON, ROCCO ORLANDO III, ROBERT BERGER e NEIL S. YESTON. "Does pH paper accurately reflect gastric pH?" Critical Care Medicine 18, n. 9 (settembre 1990): 985–88. http://dx.doi.org/10.1097/00003246-199009000-00016.

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Tesi sul tema "PH"

1

Chinnam, Krishna Chytanya. "Capacitive pH-Sensors using pH sensitive polymer". Thesis, Department of Physics, Chemistry and Biology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-16279.

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This project aims in building a new experimental setup for capacitive measurements of a pH-Sensor. PAA-IOA (Poly Acrylic Acid co – Iso Octyl Acrylate) is the dielectric material over the in-plane interdigitated gold electrodes where PAA IOA acts as an H+ ion sensing layer. The changes in the capacitance of the sensor when the sensor is dipped into different pH solutions will be quantized accordingly. The dipping setup is built in such a way that the electrodes (containing the polymer layer) can be easily dipped into different pH liquids and to eliminate any contact between the polymer and set-up (e.g. pressure effects on the sensor). From the setup it is visible that the gold electrodes are not subjected to any external force as in the case of the setup used previously. Three phases of experiments have been used in this project to get a clear view on the working principle of the polymer. The effect of pH is only considered in this project, as we already have the evidences for the salt sensitiveness of PAA IOA from the work done in the past. The influence of various pH on polymer is observed as capacitance measurements. Response time is more than 5 minutes for PAA IOA. ∆C decreases with frequency and frequency choice depends on application/electronics. The degree of other ions influence is not clear but they have a minor influence in the resistance.

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Backhus, Ralf. "Hygienestatus frisch erlegter Fasanen (Phasianus colchicus, Ph. torquatus, Ph. mongolicus, Ph. versicolor) aus verschiedenen Revieren in Deutschland /". Hannover : [s.n.], 2000. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=009476449&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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Rueda, Javier Eduardo. "The Ph(t)/Ph(t)/s/c Queueing Model and Approximation". Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/9637.

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Time-dependent queueing models are important since most of real-life problems are time-dependent. We develop a numerical approximation algorithm for the mean, variance and higher-order moments of the number of entities in the system at time t for the Ph(t)/Ph(t)/s/c queueing model. This model can be thought as a reparameterization to the G(t)/GI(t)/s. Our approach is to partition the state space into known and identifiable structures, such as the M(t)/M(t)/s/c or M(t)/M(t)/1 queueing models. We then use the Polya-Eggenberger distribution to approximate certain unknown probabilities via a two-moment matching algorithm. We describe the necessary steps to validate the approximation and measure the accuracy of the model.
Master of Science
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Kulkarni, Aditya Umesh. "Approximating Deterministic Changes to Ph(t)/Ph(t)/1/c and Ph(t)/M(t)/s/c Queueing Models". Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/33460.

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A deterministic change to a time-varying queueing model is described as either changing the number of entities, the queue capacity, or the number of servers in the system at selected times. We use a surrogate distribution for N(t), the number of entities in the system at time t, to approximate deterministic changes to the Ph(t)/Ph(t)/1/c and the Ph(t)/M(t)/s/c queueing models. We develop a solution technique to minimize the number of state probabilities to be approximated.
Master of Science
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Rivinoja, A. (Antti). "Golgi pH and glycosylation". Doctoral thesis, University of Oulu, 2009. http://urn.fi/urn:isbn:9789514292699.

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Abstract Glycans, as a part of glycoproteins, glycolipids and other glycoconjugates, are involved in many vital intra- and inter-cellular tasks, such as protein folding and sorting, protein quality control, vesicular trafficking, cell signalling, immunological defence, cell motility and adhesion. Therefore, their correct construction is crucial for the normal functioning of eukaryotic cells and organisms they form. Most cellular glycans are constructed in the Golgi, and abnormalities in their structure may derive, for instance, from alkalinization of the Golgi lumen. In this work we show that Golgi pH is generally higher and more variable in abnormally glycosylating, i.e. strongly T-antigen (Gal-β1,3-GalNAc-ser/thr) expressing cancer cells, than in non-T-antigen expressing cells. We also confirmed that the Golgi pH alterations detected in cancer cells have the potential to induce glycosylation changes. A mere 0.2 pH unit increase in Golgi pH is able to induce T-antigen expression and inhibit terminal N-glycosylation in normally glycosylating cells. The mechanism of inhibition involves mislocalization of the corresponding glycosyltransferases. We also studied potential factors that can promote Golgi pH misregulation in health and disease, and found that cultured cancer cells, despite variation and elevation in Golgi pH, are fully capable of acidifying the Golgi lumen under the normal Golgi pH. Moreover, we introduce a Golgi localized Cl-/HCO3- exchanger, AE2a, that participates in Golgi pH regulation by altering luminal bicarbonate concentration and thus also buffering capacity. Participation of AE2a in Golgi pH regulation is especially intriguing, because it also provides a novel mechanism for expelling protons from the Golgi lumen.
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Shin, John J. H. "Lipids as pH biosensors". Thesis, University of British Columbia, 2013. http://hdl.handle.net/2429/45704.

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Ighoroje, Ahbor Dolly Awani. "pH and vascular tone". Thesis, University of Glasgow, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293493.

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Marshall, Alexander James. "pH-sensitive holographic sensors". Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615895.

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Barman, Dipti Narayan. "pH sensitive fluorescent sensors". Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/4972.

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Thesis (M.S.)--University of Missouri-Columbia, 2007.
The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on April 3, 2009) Includes bibliographical references.
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Shave, Evan Eric. "pH-biased isoelectric trapping separations". Diss., Texas A&M University, 2005. http://hdl.handle.net/1969.1/4184.

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The classical isoelectric trapping (IET) technique, using the multicompartment electrolyzer (MCE), has been one of the most successful electrophoretic techniques in preparative-scale protein separations. IET is capable of achieving high resolution discrimination of proteins, by isolating proteins in between buffering membranes, in their isoelectric state. However, due to the inherent nature of the IET process, IET has suffered several shortcomings which have limited its applicability. During a classical IET separation, a protein gets closer and closer to its pI value, thus the charge of the protein gets closer and closer to zero. This increases the likelihood of protein precipitation and decreases the electrophoretic velocity of the protein, thus making the separation very long. Furthermore, the problems are aggravated by the fact that the instrumentation currently used for IET is not designed to maximize the efficiency of electrophoretic separations. To address these problems, a new approach to IET has been developed, pH-biased IET. By controlling the solution pH throughout the separation, such that it is not the same as the protein’s pI values, the problems of reduced solubility and low electrophoretic migration velocity are alleviated. The pH control comes from a novel use of isoelectric buffers (also called auxiliary isoelectric agents or pH-biasers). The isoelectric buffers are added to the sample solution during IET and are chosen so that they maintain the pH at a value that is different from the pI value of the proteins of interest. Two new pieces of IET instrumentation have been developed, resulting in major improvements in protein separation rates and energy efficiency. A variety of separations, of both small molecules and proteins, have been successfully performed using the pH-biased IET principle together with the new instrumentation.
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Libri sul tema "PH"

1

Henningsen, Poul. PH. A cura di Jørstian Tina, Nielsen Poul Erik Munk e Danske kunstindustrimuseum. København: Louis Poulsen & Co., 1994.

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Bruyère, Gérard. Fragile mémoire: Catalogue illustré des clichés sur verres, sous-séries 3 Ph, 10 Ph, 15 Ph, 38 Ph. Lyon: Les Archives, 1997.

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1818-1892, Hostrup C. (Christian), Bjarnhof Karl, Christensen Bernhard 1906-2004, Find Mikkel, Kjær Torben, Kristensen Sven Møller 1909-, Normann Andersen Kai et al., a cura di. PH--77 viser. 2a ed. [Frederiksberg]: Thaning & Appel, 2009.

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Hertel, Hans Christian. PH--en biografi. København]: Gyldendal, 2012.

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1950-, Arsovska Ljubica, e Reid Peggy 1939-, a cura di. pH neutral history. Port Townsend, Wash: Copper Canyon Press, 2012.

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1946-, McMillan Gregory K., a cura di. pH measurement and control. 2a ed. Research Triangle Park, NC: Instrument Society of America, 1993.

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Fontanarosa, Phil B., e Stacy Christiansen. pH. Oxford University Press, 2009. http://dx.doi.org/10.1093/jama/9780195176339.022.566.

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ph. 1985.

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Molter, Carey. Ph. ABDO Publishing Company, 2001.

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Ph. Edina, Minn: Abdo Pub. Co., 2001.

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Capitoli di libri sul tema "PH"

1

Kobayashi, Kensei. "pH". In Encyclopedia of Astrobiology, 1222–23. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-11274-4_1176.

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Webb, Nadia, e John C. Courtney. "pH". In Encyclopedia of Clinical Neuropsychology, 1930–31. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-0-387-79948-3_1745.

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Hasan, Ashfaq. "pH". In Handbook of Blood Gas/Acid-Base Interpretation, 143–63. London: Springer London, 2013. http://dx.doi.org/10.1007/978-1-4471-4315-4_5.

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Webb, Nadia, e John C. Courtney. "pH". In Encyclopedia of Clinical Neuropsychology, 1–2. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56782-2_1745-2.

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Webb, Nadia, e John C. Courtney. "pH". In Encyclopedia of Clinical Neuropsychology, 2668–69. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-57111-9_1745.

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Kobayashi, Kensei. "pH". In Encyclopedia of Astrobiology, 1849. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-662-44185-5_1176.

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Gooch, Jan W. "pH". In Encyclopedic Dictionary of Polymers, 529. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_8622.

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Elgamal, Ayman A. "pH". In Encyclopedia of Estuaries, 480–81. Dordrecht: Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-017-8801-4_159.

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Gooch, Jan W. "pH". In Encyclopedic Dictionary of Polymers, 914. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_14467.

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Kobayashi, Kensei. "pH". In Encyclopedia of Astrobiology, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-27833-4_1176-5.

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Atti di convegni sul tema "PH"

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Brandwajn, Alexandre, e Thomas Begin. "An approximate solution for Ph/Ph/1 and Ph/Ph/1/N queues". In the third joint WOSP/SIPEW international conference. New York, New York, USA: ACM Press, 2012. http://dx.doi.org/10.1145/2188286.2188297.

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Zhang, Sifu, Peter J. Rolfe e Yappa A. Wickramasinghe. "Optical pH sensor for physiological pH measurement". In Europto Biomedical Optics '93, a cura di Otto S. Wolfbeis. SPIE, 1994. http://dx.doi.org/10.1117/12.168757.

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Yang, Xuesong, Khengdauliu Chawang e J. C. Chiao. "Wearable Iridium Oxide pH Sensors for Sweat pH Measurements". In 2019 IEEE SENSORS. IEEE, 2019. http://dx.doi.org/10.1109/sensors43011.2019.8956832.

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Zäschke, Tilmann, Christoph Zimmerli e Moira C. Norrie. "The PH-tree". In SIGMOD/PODS'14: International Conference on Management of Data. New York, NY, USA: ACM, 2014. http://dx.doi.org/10.1145/2588555.2588564.

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Bhadra, S., G. E. Bridges, D. J. Thomson e M. S. Freund. "A wireless passive pH sensor based on pH electrode potential measurement". In 2010 Ninth IEEE Sensors Conference (SENSORS 2010). IEEE, 2010. http://dx.doi.org/10.1109/icsens.2010.5690888.

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Guenther, Derek A., e Mahmoud R. Shahriari. "Smart pH cuvette for optical monitoring of pH of biological samples". In BiOS, a cura di Samuel Achilefu e Ramesh Raghavachari. SPIE, 2010. http://dx.doi.org/10.1117/12.840670.

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Ipuy, Martin, Cyrielle Billon, Guillaume Micouin, Jacques Samarut, Chantal Andraud e Yann Bretonnière. "Novel pH-sensitive probes with a ratiometric detection for intracellular pH". In SPIE NanoScience + Engineering, a cura di Norihisa Kobayashi, Fahima Ouchen e Ileana Rau. SPIE, 2014. http://dx.doi.org/10.1117/12.2066132.

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Hotra, Zenon, Olena Aksimenteva, Iryna Hlushyk, Vladyslav Cherpak e Pavlo Stakhira. "Fibre-Optic pH Sensor". In 2006 International Conference - Modern Problems of Radio Engineering, Telecommunications, and Computer Science. IEEE, 2006. http://dx.doi.org/10.1109/tcset.2006.4404682.

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Tarchanidis, Kostas N., John N. Lygouras, Theodore Pachidis, Vassilis Kodogiannis e Christos G. Chatziandreoglou. "pH Neutralization Through Internet". In 2006 IEEE Conference on Virtual Environments, Human-Computer Interfaces and Measurement Systems. IEEE, 2006. http://dx.doi.org/10.1109/vecims.2006.250782.

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Chang, Pai-Chun, Jian-Shan Ye, Fwu-Shan Sheu e Jia Grace Lu. "Nanoscale antimony pH probe". In Optics East 2006, a cura di Nibir K. Dhar, Achyut K. Dutta e M. Saif Islam. SPIE, 2006. http://dx.doi.org/10.1117/12.690388.

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Rapporti di organizzazioni sul tema "PH"

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Dickson, Robert B. Combined MD/PH D and PH D Training Program in Breast Cancer Prevention. Fort Belvoir, VA: Defense Technical Information Center, luglio 2003. http://dx.doi.org/10.21236/ada418614.

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Wagonner, R. C. Carbon Dioxide for pH Control. Office of Scientific and Technical Information (OSTI), agosto 2001. http://dx.doi.org/10.2172/785010.

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Hedberg, R., e P. Pomes. The CCSO Nameserver (Ph) Architecture. RFC Editor, settembre 1998. http://dx.doi.org/10.17487/rfc2378.

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Tarlov, M., K. Kreider, S. Semancik e P. Huang. pH sensors based on iridium oxide. Office of Scientific and Technical Information (OSTI), marzo 1990. http://dx.doi.org/10.2172/7154189.

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Warren, Charlotte. Ending Eclampsia: PHC PH/E_plus Model. Population Council, 2018. http://dx.doi.org/10.31899/rh6.1013.

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McMullen, Larry. Sensory Preferences of Consumers for High pH, Low pH Commodity Pork Loins and Berkshire Pork Loins. Ames (Iowa): Iowa State University, gennaio 2006. http://dx.doi.org/10.31274/ans_air-180814-986.

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Fessler. L52040 The Mechanisms of High-pH and Near-Neutral pH SCC-Unresolved Issues and Experimental Techniques. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), marzo 2005. http://dx.doi.org/10.55274/r0011285.

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Key unresolved issues related to the mechanisms of high-pH and near-neutral-pH stress-corrosion cracking (SCC) were identified based upon a review of the technical literature. It was determined that the mechanism of high-pH SCC is well understood, the key outstanding issue being related to the factors that affect the micro-creep properties of a steel, which seem to be the primary determinant of its susceptibility to SCC. The mechanism of near-neutral-pH SCC is not so well understood. Both dissolution and hydrogen appear to be involved, but their relative roles remain to be determined. Some experimental methods that have been used to study near-neutral-pH SCC may have produced misleading results, in that they may have introduced other failure mechanisms such as corrosion fatigue or hydrogen embrittlement, which would not be expected under normal operating conditions for a gas pipeline. Additional research into the liquid environment responsible for near-neutral-pH SCC, the time dependence of crack growth rates, and metallurgical factors influencing the susceptibility of a steel would be useful.
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Carranza, R., e R. Rebak. Notes on the Measurement of pH Values. Office of Scientific and Technical Information (OSTI), maggio 2005. http://dx.doi.org/10.2172/15016344.

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Taylor, P. A., e D. R. McTaggart. Segregation of metals-containing wastewater by pH. Office of Scientific and Technical Information (OSTI), ottobre 1990. http://dx.doi.org/10.2172/6460486.

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Taiz, Lincoln. Regulation of Vacuolar pH in Citrus limon. Office of Scientific and Technical Information (OSTI), giugno 2005. http://dx.doi.org/10.2172/841076.

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