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Littérature scientifique sur le sujet « Pit depth »

Auteur : Grafiati

Publié le 3 juin 2025

Mis à jour le 31 juillet 2025

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Articles de revues sur le sujet "Pit depth"

Wang, Yan, Yongjun Zhang, Mingfei Li, Yi Qi, and Tianhui Ma. "A Numerical Investigation of the Deformation Mechanism of a Large Metro Station Foundation Pit under the Influence of Hydromechanical Processes." Geofluids 2021 (March 11, 2021): 1–16. http://dx.doi.org/10.1155/2021/5536137.

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Considering the unique conditions of deep and large subway foundation pit excavation affected by heavy rainfall in soil-rock composite strata, this paper employs finite element numerical simulation methods to study foundation pit instability under the influence of heavy rainfall. According to the hydraulic coupling conditions caused by rainfall, a fluid-solid coupling numerical model for a deep and large subway foundation pit in soil-rock composite strata is established in this paper. By selecting the Anshan road station of Qingdao subway line 4 as the engineering background, various parameter

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Qian, Tian Ping, Xiao Nan Gong, and Ying Li. "Analysis of Braced Excavation with Pit-in-Pit Based on Orthogonal Experiment." Applied Mechanics and Materials 71-78 (July 2011): 4549–53. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.4549.

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In order to study the supporting structure under different distances between inner pit-in-pit and foundation pit, width and depth of pit-in-pit and general excavation depth of external foundation pit, PLAXIS is adopted to simulate the whole process of pit-in-pit excavation in a foundation pit of Shanghai. The factors which influence wall deflection are analyzed using orthogonal experimental design software. The results show that the factors which influence deformation of pit-in-pit and supporting structure of foundation pit are sorted with range value or sensitivity descending: depth of pit-in

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Lin, Ming Qiang, Feng Juan Dai, and Shi Yan Song. "The Mechanical Performance Degradation of Steels Effected by Corrosion." Advanced Materials Research 774-776 (September 2013): 519–22. http://dx.doi.org/10.4028/www.scientific.net/amr.774-776.519.

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Corrosion of the steel affects seriously its mechanical performance. Based on the finite element methods, strength tensile properties of corroded steel were studied. Pit shapes and pit depths, pit locations, etc on the mechanical behavior of steel were studied mainly. Pit depth is major cause of produce rust steel mechanical performance degradation, because there is an obvious stress concentration phenomenon around pit, cause steel mechanics performance degraded significantly. Pit shapes and lengths may also be affected steel mechanical properties.

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Smith, Savanna K., Benjamin B. Risk, Rochelle H. Holm, et al. "Microbial community function and bacterial pathogen composition in pit latrines in peri-urban Malawi." PLOS Water 2, no. 10 (2023): e0000171. http://dx.doi.org/10.1371/journal.pwat.0000171.

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Despite the widespread global reliance on pit latrines as improved sanitation systems, the decomposition of waste within pit latrines is poorly understood. One area needing elucidation is the characterization and function of microbial communities within pit latrines. To address this gap, we characterized the microbial communities of 55 lined pit latrines at three sampling layers from two communities in peri-urban Malawi. The microbial communities of the fecal sludge samples were analyzed for beta diversity, pathogen presence, and functional profiling. Household surveys were conducted and used

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Afanas'ev, A. M., M. N. Babaitsev, A. V. Krayshkin, and A. V. Kubarev. "Iodine pit depth in LBWRs." Soviet Atomic Energy 71, no. 3 (1991): 780–81. http://dx.doi.org/10.1007/bf01123804.

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Alipour, S., and Hassan Farhangi. "Effects of Simulated Pit Distribution Parameters on Tensile Properties of a Structural Steel Plate." Advanced Materials Research 83-86 (December 2009): 537–44. http://dx.doi.org/10.4028/www.scientific.net/amr.83-86.537.

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Degradation of tensile properties resulting from geometrical discontinuities due to localized pitting is usually evaluated in terms of the reduced section thickness associated with pit geometry which lowers the load carrying capacity of the structure. However, the effects of finer parameters associated with pit distributions such as pit area percent (PAP) are not usually taken into account. In this research, the effects of spacing, depth and PAP on tensile properties of a structural steel are investigated. Simulated pit distributions were produced on the gage sections of flat tensile specimens

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Valor, A., F. Caleyo, L. Alfonso, J. C. Velázquez, and J. M. Hallen. "Markov Chain Models for the Stochastic Modeling of Pitting Corrosion." Mathematical Problems in Engineering 2013 (2013): 1–13. http://dx.doi.org/10.1155/2013/108386.

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The stochastic nature of pitting corrosion of metallic structures has been widely recognized. It is assumed that this kind of deterioration retains no memory of the past, so only the current state of the damage influences its future development. This characteristic allows pitting corrosion to be categorized as a Markov process. In this paper, two different models of pitting corrosion, developed using Markov chains, are presented. Firstly, a continuous-time, nonhomogeneous linear growth (pure birth) Markov process is used to model external pitting corrosion in underground pipelines. A closed-fo

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Long, Zhao, Yilei Shi, Weili Li, and Shuaihua Ye. "Soil Pressure and Deformation Analysis of Small Size Deep Foundation Pit." Journal of Physics: Conference Series 2148, no. 1 (2022): 012061. http://dx.doi.org/10.1088/1742-6596/2148/1/012061.

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Abstract In this paper, the influence of space effect on soil pressure and deformation of deep foundation pit was considered, and the finite soil pressure calculation model was established. The soil pressure of deep foundation pit was calculated by assuming the slip surface and using the finite soil limit equilibrium theory. Then, PLAXIS 3D finite element software was used to establish finite element models of different plane sizes and depths. The distribution regulation of side wall soil pressure and deformation of deep foundation pit was calculated. Finally, the results of finite soil pressu

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Liu, Yiao, Changming Wang, Xiaoyang Liu, Ruiyuan Gao, Bailong Li, and Kaleem Ullah Jan Khan. "Determination of Embedded Depth of Soldier Piles in Pile-Anchor Supporting System in Granite Residual Soil Area." Geofluids 2021 (February 18, 2021): 1–12. http://dx.doi.org/10.1155/2021/5518233.

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Reasonable depth of pile embedment is one of the key factors for the success of deep foundation pit projects. This paper has taken a deep foundation pit project in a granite residual soil area in Shenzhen as an example and used physical model tests to study the deformation law of the piles and the surrounding soil during the excavation of the deep foundation pit, revealing the variation law of earth pressure in time and space in the pit and then verified it by numerical simulation. The influence of the embedded depth of the pile on the deformation and earth pressure of the deep foundation pit

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Shumakov, I., V. Basanskyi, Yu Fursov, S. Bratishko, and O. Savchenko. "DETERMINATION OF THE IMPACT ZONE OF ENABLING WORKS OF A NEW CONSTRUCTION ON THE SURROUNDING BUILDINGS." Scientific Bulletin of Building 1, no. 109 (2023): 17–22. http://dx.doi.org/10.33042/2311-7257.2023.109.1.3.

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For modern urban construction in the compacted conditions of new sites, the question of the stability of soil massifs under existing buildings is relevant. The intensity of development of possible deformations largely depends on the mutual location of the base of the previously erected foundation and the pit for the new building. The article provides a methodology for determining the area of influence of the pit on the soil foundations of adjacent buildings, depending on the type of enclosing structures and the depth of the pit used. The impact zone was calculated for the pit using protective

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Thèses sur le sujet "Pit depth"

Hofsetz, Christian. "Image-based rendering of range data with depth uncertainty /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2003. http://uclibs.org/PID/11984.

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Baydak, Martha A. "Human grief on the death of a pet." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ53087.pdf.

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Bölke, Kristofer. "IRONARC; a New Method for Energy Efficient Production of Iron Using Plasma Generators." Thesis, KTH, Materialvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-173357.

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The most widely used process to reduce iron ore and to produce pig iron is the blast furnace. The blast furnace is a large source of CO2 emissions since it is a coal based process and due to that the main energy source and reducing agent is coke, it is difficult to reduce these further. IRONARC is a new method used to produce pig iron by reducing iron ore and all the energy used for heating comes from electricity, which gives the opportunity to use renewable resources. The process uses plasma generators that inject gas at high temperature and velocity into a slag that consists of iron oxides.

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St, James Sara. "The effect of changing gamma-ray interaction depth on the "block effect" in PET /." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=84076.

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The block effect in Positron Emission Tomography (PET) is the degradation in spatial resolution that is seen when there are more scintillation crystals than photomultiplier tubes in a detector.<br>We measured the block effect in detectors from three PET scanners: the Siemens-CTI HR+, the GE Advance, and the Siemens-CTI HI-REZ. In the CTI HR+ the block effect was 0.7 mm in the central crystals, and negligible for the edge crystals. In the GE Advance the block effect was 0.6 mm for the central crystals, and 0.5 mm for the edge crystals. In the CTI HI-REZ detector the block effect varied f

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Yu, Haiming. "Analog ASICs for a Depth of Interaction (DOI) Positron Emission Tomography (PET) dectector module /." Thesis, Connect to this title online; UW restricted, 1999. http://hdl.handle.net/1773/6066.

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Nigh, Adam. "The depth dimension : scripture and hermeneutics in the theology of T.F. Torrance." Thesis, University of Aberdeen, 2013. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=202785.

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This thesis examines the theology of T. F. Torrance as it relates to scripture and hermeneutics, areas in which he has been neglected in the midst of otherwise great interest and activity surrounding his work. Torrance's doctrine of scripture is shown to exhibit what he calls a “dimension of depth” in which God is seen to reveal himself through it as it testifies to the person and work of Jesus Christ, the Son of one being with the Father incarnate as a human being, while retaining a perpetual distinction between its words and the divine Word that speaks through them. This then leads to a theo

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Harvey, Jagger J. W. "Investigations into the nature and regulation of plant programmed cell death /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2005. http://uclibs.org/PID/11984.

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Morris, Gerard Michael. "Epidermal cell kinetics in normal and X-irradiated pig skin." Thesis, University of London, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337454.

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Fitzgerald, Heather Anne. "Isolation and characterization of rice genes regulating disease resistance and cell death /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2003. http://uclibs.org/PID/11984.

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Grammatopoulou, Eleanna. "Investigating the Resource Accumulation Depth hypothesis of the sediments of the Mariana and Kermadec trenches." Thesis, University of Aberdeen, 2018. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=239877.

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Livres sur le sujet "Pit depth"

Planer, Nigel. Death of Long Pig. Nick Hern, 2009.

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Planer, Nigel. Death of Long Pig. Nick Hern, 2009.

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Wild, Margaret. Old Pig. Dial Books for Young Readers, 1996.

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Short, Sharon Gwyn. Death by deep dish pie. Wheeler Pub., 2004.

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Wild, Margaret. Old Pig. Dial Books for Young Readers, 1996.

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Wild, Margaret. Old pig. Allen & Unwin, 2009.

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Wild, Margaret. Old pig. Viking, 1996.

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Greenberg, Judith E. Sunny: The death of a pet. F. Watts, 1986.

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Nicholson, Jill. Pet loss and support for bereaved pet owners. Society for Companion Animal Studies, 1993.

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Jim, Judkis, ed. When a pet dies. Putnam, 1988.

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Chapitres de livres sur le sujet "Pit depth"

Yang, Yongming, Xiwen Li, and Yao Chen. "The Influence of Different Excavation Methods on Deep Foundation Pit and Surrounding Environment." In Lecture Notes in Civil Engineering. Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-1260-3_11.

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AbstractTaking a deep foundation pit in Shijiazhuang, Beijing as the background of the project, combined with the excavation range of the deep foundation pit and the spatial location and geometry of the surrounding engineering bodies, FLAC3D software is used to establish a numerical model of the deep foundation pit excavation containing the deep foundation pit, surrounding buildings and underground tunnels and other engineering bodies. The numerical model truly reflects the geometric size and spatial location relationship between deep foundation pit and surrounding engineering bodies. Based on

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Ma, Lili, Yun Chen, Liang Zhang, et al. "Cases Study on Foundation Pit Design in Complex Environment of Urban Core Area." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2532-2_5.

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AbstractWith the degree of urban underground space developing in China, the scale and excavation depth of foundation pit is much larger, and the surrounding environment is also more and more complex. Therefore, five cases of foundation pit design in complex environment have been studied in this paper. Then combined with local engineering experience, a design scheme of foundation pit adjacent to important facilities which is suitable for Qianjiang New Town has been summarized. Finally, based on the five cases, a simple model to assessment the complexity of the surrounding environment is propose

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Dagdelen, K., and I. Traore. "Open Pit Transition Depth Determination Through Global Analysis of Open Pit and Underground Mine Production Scheduling." In Advances in Applied Strategic Mine Planning. Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-69320-0_19.

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Franceschini, Lorenzo, Francesca Vecchi, Francesco Tondolo, Beatrice Belletti, Javier Sánchez Montero, and Paolo Minetola. "Variability in Section Loss and Maximum Pit Depth of Corroded Prestressing Wires." In Lecture Notes in Civil Engineering. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-91877-4_56.

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Nguyen, Hong Nam. "Analysis of the Effect of the Deep Excavation of a High-Rise Building on the Deformation of the Ground Surface and Diaphragm Wall." In Lecture Notes in Civil Engineering. Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-2532-2_52.

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AbstractStudy on the influence of the deep excavation by top-down construction method on the deformation of the adjacent ground surface and diaphragm wall has been analyzed in detail for a deep foundation pit of a high-rise building at 27 Lang Ha, Hanoi. The analysis was implemented by the finite element method. The influencing factors such as wall stiffness, wall depth, ground surface load, and initial groundwater level were carefully investigated by applying a parametric study, taking two cases of short-term and long-term working conditions. The simulated results show that the settlement of

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Rakishev, Bayan Rakishevich, Serik Kurashovich Moldabayev, and Yeldos Aben. "Minimizing the Time of Reaching the Final Depth in the Pit of the First Train When Extracting the Elongated Steep-Dipping Deposits." In Mine Planning and Equipment Selection. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-02678-7_21.

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Feng, Yiyuan, Wenbin Zhou, Ziya Xu, Yi Yu, and Laingyu Wu. "Study on the Effect of Multiple Excavation Depth Pit Excavation on the Deformation of Enclosure Structure and Surrounding Buildings under Asymmetric Loading." In Atlantis Highlights in Engineering. Atlantis Press International BV, 2025. https://doi.org/10.2991/978-94-6463-726-7_11.

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Singh, Gurmit, Omar Alqawi, and Myrna Espiritu. "Metronomic PDT and Cell Death Pathways." In Methods in Molecular Biology. Humana Press, 2010. http://dx.doi.org/10.1007/978-1-60761-697-9_5.

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Zhu, Wenlong, Ran Jing, Ahmed H. Ghonaim, and Wentao Li. "Porcine Hemagglutinating Encephalomyelitis Virus: An In-Depth Exploration." In Veterinary Virology of Domestic and Pet Animals. Springer Nature Switzerland, 2024. https://doi.org/10.1007/978-3-031-54690-7_83-1.

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Redmalm, David. "To Make Pets Live, and To Let Them Die: The Biopolitics of Pet Keeping." In Death Matters. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-11485-5_12.

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Actes de conférences sur le sujet "Pit depth"

Lee, J. S., R. I. Ray, and B. J. Little. "Lifetime Predictions for Carbon Steel in Natural Fresh Water." In CORROSION 2011. NACE International, 2011. https://doi.org/10.5006/c2011-11220.

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Abstract Corrosion rates of carbon steel in Duluth-Superior Harbor (DSH) were measured over a 3-year period using weight loss, pit depth measurements and linear polarization resistance (LPR). Corrosion coupons were placed in racks throughout the harbor and removed periodically for weight loss and pit depth measurements. LPR measurements were made at rack locations. Estimated corrosion rates varied among the techniques and there were no obvious relationships between predicted rates from the three techniques. Penetration rates estimated from pit depths were not linear with time. Pit depth varied

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Turnbull, A., and S. Zhou. "Impact of Pitting Corrosion on the Benefit of Shot Peening." In CORROSION 2018. NACE International, 2018. https://doi.org/10.5006/c2018-10630.

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Abstract Shot peening is used in many industrial applications, e.g. steam turbine blades, to induce near-surface compressive residual stresses and reduce the likelihood of failure by fatigue, corrosion fatigue and stress corrosion cracking. On the whole, shot peening has proven to be very successful in increasing the life of structures and components. However, the depth of the compressive stress layer is typically only about 250 μm and this poses the question as to the retained benefit when corrosion pits develop to varying depth. In the first stage to addressing this issue we show that the fa

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Christman, Timothy K. "Relationships between Pitting, Stress and Stress-Corrosion Cracking of Line Pipe STEELS." In CORROSION 1991. NACE International, 1991. https://doi.org/10.5006/c1991-91100.

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Abstract This paper presents observations about the results of an investigation into the relationships between pitting, stress, and stress-corrosion cracking of line pipe steels. This work showed that the number of stress-corrosion cracks varied exponentially with specimen stress. The cracks generally nucleated from pits, whose depths followed a lognormal distribution. A mathematical analysis of the crack number and pit depth data supports the hypothesis that a crack nucleates from the bottom of a pit when the stress concentration at the bottom of the pit reaches a critical value. The increase

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Baker, Brian A., and Gaylord D. Smith. "Metal Dusting Behavior of High-Temperature Alloys." In CORROSION 1999. NACE International, 1999. https://doi.org/10.5006/c1999-99054.

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Abstract The corrosion behavior of ferritic, stainless steel, iron-nickel-chromium and nickel-base alloys was investigated in H2-80%CO at 621 °C. Mass change and rate of mass loss, pit depth progression rate and pit distribution were monitored and recorded. It was found that wastage rates and pit depth progression rates were generally much lower for nickel-base alloys than iron-base alloys. Pit depth did not necessarily correlate with area averaged mass change rate. Chromium, silicon and aluminum additions were found to be beneficial in producing an oxide scale which reduced or prevented wasta

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Bogaert-Alvarez, Ricardo J., Yonghyun Kim, Jaclyn M. Sekula, and James LaBuz. "Relationships between Electrochemical Noise, Pit Depth, and Pit Density in Metallic Alloys Exposed to 3.5 Wt% Nacl Solutions." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02332.

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Abstract Electrochemical noise experiments with pairs of electrodes were performed in 3.5 wt % NaCl aqueous solutions using four alloys: 430 stainless steel (SS) (UNS 43000), 304L SS (UNS 30403), 316L SS (UNS 31603), and alloy 276 (UNS N10276). With a zero-resistance ammeter (ZRA), data were collected on the following parameters: root-mean-square (RMS) current and the absolute maximum current. Through microscopic observations, the following surface results were recorded: pit average depth, pit maximum depth, pit density, and differences in pit densities. Except for the latter result, the surfa

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Pensado, Osvaldo, Pavan K. Shukla, and Jay Fisher. "Application of Adaptive-Predictive Probabilistic Methodology for Forecasting Localized-Corrosion-Induced Damage." In CORROSION 2014. NACE International, 2014. https://doi.org/10.5006/c2014-4346.

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Abstract This paper presents an application of an adaptive-predictive probabilistic model for forecasting localized-corrosion-induced pit population and pit depth distributions. The application involves predicting pitting corrosion damage, under sea salt deposits, in 304 stainless steel (UNS number S30400). Pitting corrosion was induced on several rectangular 304 stainless steel coupons by depositing the simulated sea salt, and placing the coupons at 50 °C and 30 g/m3 absolute humidity environment. One by one, the coupons were removed from the environment. These coupons were used to gather ini

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Shukla, Pavan K., and Osvaldo Pensado. "Development of Adaptive-Predictive Probabilistic Methodology for Forecasting Localized-Corrosion-Induced Damage." In CORROSION 2013. NACE International, 2013. https://doi.org/10.5006/c2013-02615.

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Abstract This paper presents development of an adaptive-predictive probabilistic methodology for forecasting localized-corrosion-induced pit population and pit depth distributions. Nuclear power plant (NPP) operators are required to periodically inspect components by visual and volumetric examinations to maintain integrity and ensure safety. However, as NPPs age, more frequent inspections would be needed to maintain component integrity. To define inspection schedules, a framework is needed that balances risk and cost and ensures safety. This paper presents a methodology, including a model that

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Wallace, Jon, Ramani Reddy, Dylan Pugh, and Jorge Pacheco. "Sour Service Pit Growth Predictions of Carbon Steel Using Extreme Value Statistics." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07657.

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Abstract The deepest pits formed during pitting corrosion of stainless steels have previously been shown to follow a Type III extreme value distribution, where a statistical upper bound on pit depth exists for a given point in time. In this study the Joint Generalized Extreme Value model parameterized with respect to both time and area is applied to predict pit growth of carbon steel under sour service conditions. Measurements of the most extreme pit depths were taken at different time durations to estimate model parameters and several statistical measures were used to assess the model goodnes

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Sundararajan, Guruprasad, Rebecca Hefner, and Vijay Kumar Narasaiah. "Assessment of Coupled Multi-Electrode Array Technique for Monitoring Corrosion Performance of a Martensitic Stainless Steel under Salt-fog Environments." In CORROSION 2017. NACE International, 2017. https://doi.org/10.5006/c2017-09396.

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Abstract Coupled Multi-Electrode Array Sensor (CMEAS) have been used for monitoring performance of 17-4PH stainless steel under Salt-fog conditions. Temperature, pH and Salt-concentrations and pH were varied at 2 levels for understanding the effects of these parameters on localized corrosion performance. Specific sets of experiments were done with also two levels of electrode diameters. Average localized corrosion rates and maximum pit-depths were monitored as a function of time. Coupons of 17-4PH and GTD450 stainless steels were also placed in the same environment to compare the results with

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Kiefner, John F., and Kolin M. Kolovich. "Calculation of a Corrosion Rate Using Monte Carlo Simulation." In CORROSION 2007. NACE International, 2007. https://doi.org/10.5006/c2007-07120.

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Abstract This document describes a means of calculating a credible corrosion rate for establishing integrity reassessment intervals for a pipeline that has sustained corrosion-caused metal loss. The method uses corrosion pit depths determined at a point in time by either direct measurement or inferred indirectly from inspection data or a combination of both. The history of the pipeline can be used to determine logical points in time for the corrosion to have initiated. Probability density functions are used to represent the time of corrosion initiation and pit depth data, and through a Monte C

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Rapports d'organisations sur le sujet "Pit depth"

Kaufeld, Kimberly, Elizabeth Kelly, and James Wendelberger. Pit depth analysis using automated software for three containers with complete imaging. Office of Scientific and Technical Information (OSTI), 2022. http://dx.doi.org/10.2172/1846879.

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Wendelberger, James, Elizabeth Kelly, and Timothy Duffy. Pit and Crack Detection Summary Report CurrentVersionTS20230629082254 Clean File Parameter 2 Micron Depth. Office of Scientific and Technical Information (OSTI), 2023. http://dx.doi.org/10.2172/1989153.

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Karns, Tristan, Jonathan Gigax, Gabriel Longoria, et al. An Investigation of Critical Corrosion Pit Depth in SAVY-4000 Nuclear Material Storage Containers. Office of Scientific and Technical Information (OSTI), 2025. https://doi.org/10.2172/2564609.

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Kiefner and Vieth. L51688 RSTRENG2 (DOS Version) User's Manual. Pipeline Research Council International, Inc. (PRCI), 1993. http://dx.doi.org/10.55274/r0011339.

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The RSTRENG 3.0 (Windows Version) software program and users manual were developed to enhance the usability and options available in the original program RSTRENG. RSTRENG was developed as part of AGA PR-3-805, "A Modified Criterion for Evaluating the Remaining Strength of Corroded Pipe." Like the original version of RSTRENG, RSTRENG 3.0 can be used by pipeline operators to evaluate the remaining strength of corroded pipe. The required user inputs are pipe diameter, wall thickness, grade of the pipe material, and a series of pit depth and length measurements. The new version of the software act

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Kiefner and Vieth. L51688B A Modified Criterion for Evaluating the Remaining Strength of Corroded Pipe. Pipeline Research Council International, Inc. (PRCI), 1989. http://dx.doi.org/10.55274/r0011347.

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The RSTRENG software program and users manual were developed to enhance the usability and options available in the original program RSTRENG. RSTRENG was developed as part of AGA PR-3-805, "A Modified Criterion for Evaluating the Remaining Strength of Corroded Pipe." RSTRENG can be used by pipeline operators to evaluate the remaining strength of corroded pipe. The required user inputs are pipe diameter, wall thickness, grade of the pipe material, and a series of pit depth and length measurements. The new version of the RSTRENG software actually produces the same results as the first version; th

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Unknown, Author. L51658 Subsea Pig Recovery Concepts. Pipeline Research Council International, Inc. (PRCI), 1991. http://dx.doi.org/10.55274/r0010603.

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The technology and procedures for the inspection of pipelines from offshore production and process facilities to shore or other offshore installations has developed rapidly in recent years. This rapid development can be attributed to several factors including pipeline operators protecting their investment in their lines, heightened environmental protection concerns, and increasing regulatory requirements. A limited number of the offshore pipeline systems in the U.S. currently include the ability to inspect the trunkline using either an ultrasonic or magnetic particle inspection pig. This pig i

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Withers, Clare, Diana Dill, Jeanann Haas, Kathy Haines, and Berenika Webster. Library Impact Research Report: A Toolkit for Demonstrating and Measuring Impact of Primary Sources in Teaching and Learning. Association of Research Libraries, 2022. http://dx.doi.org/10.29242/report.pitt2022b.

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As part of ARL’s Research Library Impact Framework initiative, a team from the University of Pittsburgh Library System addressed how special collections support teaching, learning, and research. This project developed a toolkit that allows measurement of impact of engagement with primary sources. The University of Pittsburgh (Pitt) initially worked with University of California, Irvine (UCI) to develop student learning outcomes based on the ACRL/RBMS–SAA Guidelines for Primary Source Literacy and used a logic model framework to identify three types of outcomes: initial (attainment of new skill

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Barker, Amanda, Taylor Sullivan, W. Baxter, et al. Iron oxidation–reduction processes in warming permafrost soils and surface waters expose a seasonally rusting Arctic watershed. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/48714.

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Landscape-scale changes from climate change in the Arctic affect the soil thermal regime and impact the depth to permafrost in vulnerable tundra watersheds. When top-down thaw of permafrost occurs, oxygen and porewaters infiltrate deeper in the soil column exposing fresh, previously frozen material and altering redox conditions. A gap remains in understanding how redox stratifications in thawing permafrost impact the geochemistry of watersheds in response to climate change and how investigations into redox may be scaled by coupling extensive geophysical mapping techniques. In this study, we co

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Chauhan. L52134 Development of Methods For Assessing Corrosion Metal Loss Defects In Casing Strings. Pipeline Research Council International, Inc. (PRCI), 2003. http://dx.doi.org/10.55274/r0010892.

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An industry survey, dominated by PRCI member companies, was undertaken to gather key information regarding the design, operation and inspection of well bore casing strings. The aim of the survey was to gather information regarding the design standards, fields, gas composition, completion configuration, operational details, inspection methods and type of damage found. Survey results representing 67 storage facilities with a total of 4724 wells were received. This represents approximately 16% of US gas storage facilities. Facilities with initial completion dates between 1920 and 1990 were repres

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Ayele, Seife, and Wei Shen. Renewable Energy Procurement by Private Suppliers in Ethiopia. Institute of Development Studies (IDS), 2022. http://dx.doi.org/10.19088/ids.2022.008.

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Auction-based renewable electricity procurement has the potential to attract private investment and lower prices, but its design and implementation can be challenging. Since 2018, Ethiopia has organised auctions to procure new capacity from independent power producers (IPPs). Based on an in-depth study of the political economy, this policy briefing explores factors impeding the design and implementation of IPPs’ projects, including the shortage of foreign currency and convertibility of the Ethiopian birr to repatriate profits. It proposes measures to overcome these obstacles and mitigate risks

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