Academic literature on the topic 'Drain sequences'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Drain sequences.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Journal articles on the topic "Drain sequences"
1
Charles, Jermilia, Chandra S. Tangudu, and Bradley J. Blitvich. "Complete nucleotide sequences of the large RNA genome segments of Main Drain and Northway viruses (family Peribunyaviridae)." Archives of Virology 163, no. 8 (April 3, 2018): 2253–55. http://dx.doi.org/10.1007/s00705-018-3826-6.
Full text
2
Chaudhary, Anita, Sheridan Kidd Haack, Joseph W. Duris, and Terence L. Marsh. "Bacterial and Archaeal Phylogenetic Diversity of a Cold Sulfur-Rich Spring on the Shoreline of Lake Erie, Michigan." Applied and Environmental Microbiology 75, no. 15 (June 19, 2009): 5025–36. http://dx.doi.org/10.1128/aem.00112-09.
Full textAbstract:
ABSTRACT Studies of sulfidic springs have provided new insights into microbial metabolism, groundwater biogeochemistry, and geologic processes. We investigated Great Sulphur Spring on the western shore of Lake Erie and evaluated the phylogenetic affiliations of 189 bacterial and 77 archaeal 16S rRNA gene sequences from three habitats: the spring origin (11-m depth), bacterial-algal mats on the spring pond surface, and whitish filamentous materials from the spring drain. Water from the spring origin water was cold, pH 6.3, and anoxic (H2, 5.4 nM; CH4, 2.70 μM) with concentrations of S2− (0.03 mM), SO4 2− (14.8 mM), Ca2+ (15.7 mM), and HCO3 − (4.1 mM) similar to those in groundwater from the local aquifer. No archaeal and few bacterial sequences were >95% similar to sequences of cultivated organisms. Bacterial sequences were largely affiliated with sulfur-metabolizing or chemolithotrophic taxa in Beta-, Gamma-, Delta-, and Epsilonproteobacteria. Epsilonproteobacteria sequences similar to those obtained from other sulfidic environments and a new clade of Cyanobacteria sequences were particularly abundant (16% and 40%, respectively) in the spring origin clone library. Crenarchaeota sequences associated with archaeal-bacterial consortia in whitish filaments at a German sulfidic spring were detected only in a similar habitat at Great Sulphur Spring. This study expands the geographic distribution of many uncultured Archaea and Bacteria sequences to the Laurentian Great Lakes, indicates possible roles for epsilonproteobacteria in local aquifer chemistry and karst formation, documents new oscillatorioid Cyanobacteria lineages, and shows that uncultured, cold-adapted Crenarchaeota sequences may comprise a significant part of the microbial community of some sulfidic environments.
3
Smith, B. Y., S. J. Turner, and K. A. Rodgers. "Opal-A and associated microbes from Wairakei, New Zealand: the first 300 days." Mineralogical Magazine 67, no. 3 (June 2003): 563–79. http://dx.doi.org/10.1180/0026461036730118.
Full textAbstract:
AbstractAll samples of silica sinter, <2 y old taken from the discharge drain of the Wairakei geothermal power station and the Rainbow Terrace of Orakei Korako, consist of non-crystalline opal-A. This silica phase deposits directly upon the concrete drain wall and filamentous templets, extending from this wall, afforded by the microbial community present in the drain, whose nature was determined by a culture- independent strategy that entailed construction, fingerprinting and sequencing of a 16S clone library. The bacterial community is dominated by five major groups of organisms, present in approximately equal proportions, and which account for ∼50% of the community. None of the 16S sequences from these dominant groups yielded a perfect match with 16S sequences for named organisms in the international databases. However one dominant group clusters withHydrogenophilus thermoluteus,a thermophilic filamentous bacterium, and two cluster with putatively thermophilic members of theCyanobacteriaand green non-sulphur bacteria respectively. Initial opal-A deposits rapidly as agglomerations of silica nanospheres that, in turn, form chains of coalesced, oblate, microspheres <0.4 x 0.2 mm about the barbicel-like filaments, to produce a mat of fine woven strands. The majority of individual filaments are <8 μm long and 0.8 mm wide but may be up to 55 mm long by 1 mm wide. Where laminar flow dominates, most strands develop parallel to the drain current but some strands crisscross while others protrude above the mat surface. Where flow is turbulent, strands lack preferred orientation and some adopt a helical form. In general, following deposition, the values of the scattering broadband at half (FWHM) and three quarters (FWTM) of the maximum intensity decrease with increasing sample age. The behaviour of the band at one quarter maximum intensity (FWQM) is less consistent, but, in general, the youngest sinters possess the highest FWQM, FWHM and FWTM values that prove independent of fabric type. Opal-A silica matures following its removal from the parent fluid, especially where the sinter surface is filmed by water. A continual movement of silica is shown by a second generation of microspheres formed on the silica mat surface, by an increase in size of the initial microspheres, and by an increase in maximum intensity of the X-ray scattering broadbands. Similar silica aging behaviour occurs among young sinters developed upon microbial mats at Orakei Korako. The deposition and aging processes accord with the known behaviour of juvenile opaline silica in both natural and artificial systems whose pH, temperature and dissolved salt content are similar to Wairakei and Rainbow terrace: gelling of silica is favoured by the high pH (∼8.3) and temperature (∼60°C) of the Wairakei discharge fluid but the high dissolved salt content of the water (Na+= 930 μg/g, Ca2+= 12 μg/g, Cl = 1500 μg/g) and abundant microbial community facilitate rapid and copious flocculation of solid silica within the drain, in contrast to the slower accumulation on the natural sinter terrace at lower temperature (30—45°C) from less saline dilute bicarbonate-chloride waters (Na+= 180 μg/g, Ca2+= 0.2 μg/g, Cl = 400 μg/g, pH = 8.1).
4
Harris, R. H., G. J. Scammell, W. J. Müller, and J. F. Angus. "Crop productivity in relation to species of previous crops and management of previous pasture." Australian Journal of Agricultural Research 53, no. 11 (2002): 1271. http://dx.doi.org/10.1071/ar02021.
Full textAbstract:
An experiment at Rutherglen in north-eastern Victoria compared 5 grass-removal methods in subterranean clover-based pastures that were grown before cropping sequences of canola–wheat–lupin–wheat or wheat–wheat–lupin–wheat. The cropping sequences were started in 3 successive years to provide replication in time. Grass removal from the pasture was more effective in winter than in spring and led to yield increases by the first and second crops. The largest increase (80%) was by the first canola crop after winter-cleaned pasture. The yield increase by the equivalent wheat crop was 42%. Since annual grasses and canola do not host the same root pathogens, we conclude that the yield responses were not due to root-disease control but probably to increased N supply. Assays of wheat roots confirmed that root disease was negligible throughout the experiment. Wheat growing in the year after canola yielded 11% more than wheat growing after wheat. The most surprising result was a 17% increase in the yield of wheat growing 3 years after canola compared with wheat growing 3 years after wheat, with wheat–lupin sequences in the intervening years for both systems. We suggest that canola and lupin, both of which are non-hosts of arbuscular mycorrhizal fungi, reduced mycorrhizal root colonisation in the fourth-year wheat crop, leading to less drain on assimilates.
5
Liu, Sheng, Shuang Song, Ning Xie, Hai Chen, Xiaobo Wu, and Menglian Zhao. "Miller Plateau Corrected with Displacement Currents and Its Use in Analyzing the Switching Process and Switching Loss." Electronics 10, no. 16 (August 20, 2021): 2013. http://dx.doi.org/10.3390/electronics10162013.
Full textAbstract:
This paper reveals the relationship between the Miller plateau voltage and the displacement currents through the gate–drain capacitance (CGD) and the drain–source capacitance (CDS) in the switching process of a power transistor. The corrected turn-on Miller plateau voltage and turn-off Miller plateau voltage are different even with a constant current load. Using the proposed new Miller plateau, the turn-on and turn-off sequences can be more accurately analyzed, and the switching power loss can be more accurately predicted accordingly. Switching loss models based on the new Miller plateau have also been proposed. The experimental test result of the power MOSFET (NCE2030K) verified the relationship between the Miller plateau voltage and the displacement currents through CGD and CDS. A carefully designed verification test bench featuring a power MOSFET written in Verilog-A proved the prediction accuracy of the switching waveform and switching loss with the new proposed Miller plateau. The average relative error of the loss model using the new plateau is reduced to 1/2∼1/4 of the average relative error of the loss model using the old plateau; the proposed loss model using the new plateau, which also takes the gate current’s variation into account, further reduces the error to around 5%.
6
Gaboury, M. N., R. A. Janusz, and K. E. Broughton. "Stream Channel and Riparian Zone Rehabilitation in the Dauphin Lake Watershed, Manitoba." Water Quality Research Journal 32, no. 2 (May 1, 1997): 257–72. http://dx.doi.org/10.2166/wqrj.1997.019.
Full textAbstract:
Abstract An extensive program of drain construction, stream channelization and diversion, begun in the early 1900s, expanded the area of cultivated, arable land within the Dauphin Lake basin. The developed drainage network altered flows, shortened natural streams, eliminated aquatic habitats, and caused channel erosion. The Stream Rehabilitation Program was developed in 1992 to rehabilitate riparian zones and unstable stream reaches within the seven major tributaries of the watershed. The rehabilitation strategy included stream condition assessments, improvement of the channel stability and aquatic habitats by reintroducing pool and riffle sequences, and involvement of landowners in the design and implementation of their on-farm riparian rehabilitation plans. Between 1993 and 1996, 36 km of straightened channels were rehabilitated using pool and riffle sequences, and 14 cooperating livestock producers implemented new farm layouts and practices. Under a signed stewardship agreement, landowners committed to maintain the project works and a minimum 10-m riparian corridor for at least 10 years. The Stream Rehabilitation Program has been adopted as a model for other watershed level management programs throughout Manitoba. The program has raised public awareness of fisheries, wildlife, recreation, agriculture and land stewardship issues.
7
Schwalbe, E., R. Koschitzki, and H. G. Maas. "RECOGNITION OF DRAINAGE TUNNELS DURING GLACIER LAKE OUTBURST EVENTS FROM TERRESTRIAL IMAGE SEQUENCES." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B8 (June 23, 2016): 537–43. http://dx.doi.org/10.5194/isprsarchives-xli-b8-537-2016.
Full textAbstract:
In recent years, many glaciers all over the world have been distinctly retreating and thinning. One of the consequences of this is the increase of so called glacier lake outburst flood events (GLOFs). The mechanisms ruling such GLOF events are still not yet fully understood by glaciologists. Thus, there is a demand for data and measurements that can help to understand and model the phenomena. Thereby, a main issue is to obtain information about the location and formation of subglacial channels through which some lakes, dammed by a glacier, start to drain. The paper will show how photogrammetric image sequence analysis can be used to collect such data. <br><br> For the purpose of detecting a subglacial tunnel, a camera has been installed in a pilot study to observe the area of the Colonia Glacier (Northern Patagonian Ice Field) where it dams the Lake Cachet II. To verify the hypothesis, that the course of the subglacial tunnel is indicated by irregular surface motion patterns during its collapse, the camera acquired image sequences of the glacier surface during several GLOF events. Applying tracking techniques to these image sequences, surface feature motion trajectories could be obtained for a dense raster of glacier points. Since only a single camera has been used for image sequence acquisition, depth information is required to scale the trajectories. Thus, for scaling and georeferencing of the measurements a GPS-supported photogrammetric network has been measured. <br><br> The obtained motion fields of the Colonia Glacier deliver information about the glacier’s behaviour before during and after a GLOF event. If the daily vertical glacier motion of the glacier is integrated over a period of several days and projected into a satellite image, the location and shape of the drainage channel underneath the glacier becomes visible. The high temporal resolution of the motion fields may also allows for an analysis of the tunnels dynamic in comparison to the changing water level of the lake.
8
Schwalbe, E., R. Koschitzki, and H. G. Maas. "RECOGNITION OF DRAINAGE TUNNELS DURING GLACIER LAKE OUTBURST EVENTS FROM TERRESTRIAL IMAGE SEQUENCES." ISPRS - International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences XLI-B8 (June 23, 2016): 537–43. http://dx.doi.org/10.5194/isprs-archives-xli-b8-537-2016.
Full textAbstract:
In recent years, many glaciers all over the world have been distinctly retreating and thinning. One of the consequences of this is the increase of so called glacier lake outburst flood events (GLOFs). The mechanisms ruling such GLOF events are still not yet fully understood by glaciologists. Thus, there is a demand for data and measurements that can help to understand and model the phenomena. Thereby, a main issue is to obtain information about the location and formation of subglacial channels through which some lakes, dammed by a glacier, start to drain. The paper will show how photogrammetric image sequence analysis can be used to collect such data. <br><br> For the purpose of detecting a subglacial tunnel, a camera has been installed in a pilot study to observe the area of the Colonia Glacier (Northern Patagonian Ice Field) where it dams the Lake Cachet II. To verify the hypothesis, that the course of the subglacial tunnel is indicated by irregular surface motion patterns during its collapse, the camera acquired image sequences of the glacier surface during several GLOF events. Applying tracking techniques to these image sequences, surface feature motion trajectories could be obtained for a dense raster of glacier points. Since only a single camera has been used for image sequence acquisition, depth information is required to scale the trajectories. Thus, for scaling and georeferencing of the measurements a GPS-supported photogrammetric network has been measured. <br><br> The obtained motion fields of the Colonia Glacier deliver information about the glacier’s behaviour before during and after a GLOF event. If the daily vertical glacier motion of the glacier is integrated over a period of several days and projected into a satellite image, the location and shape of the drainage channel underneath the glacier becomes visible. The high temporal resolution of the motion fields may also allows for an analysis of the tunnels dynamic in comparison to the changing water level of the lake.
9
Armstrong, William H., and Robert S. Anderson. "Ice-marginal lake hydrology and the seasonal dynamical evolution of Kennicott Glacier, Alaska." Journal of Glaciology 66, no. 259 (June 11, 2020): 699–713. http://dx.doi.org/10.1017/jog.2020.41.
Full textAbstract:
AbstractGlacier basal motion is responsible for the majority of ice flux on fast-flowing glaciers, enables rapid changes in glacier motion and provides the means by which glaciers shape alpine landscapes. In an effort to enhance our understanding of basal motion, we investigate the evolution of glacier velocity and ice-marginal lake stage on Kennicott Glacier, Alaska, during the spring–summer transition, a time when subglacial drainage is undergoing rapid change. A complicated record of > 50 m fill-and-drain sequences on a hydraulically-connected ice-marginal lake likely reflects the punctuated establishment of efficient subglacial drainage as the melt season begins. The rate of change of lake stage generally correlates with diurnal velocity maxima, both in timing and magnitude. At the seasonal scale, the up-glacier progression of enhanced summer basal motion promotes uniformity of daily glacier velocity fluctuations throughout the 10 km study reach, and results in diurnal velocity patterns suggesting increasingly efficient meltwater delivery to and drainage from the subglacial channel system. Our findings suggest the potential of using an ice-marginal lake as a proxy for subglacial water pressure, and show how widespread basal motion affects bulk glacier behavior.
10
Yumoto, Isao, Kikue Hirota, Hideyuki Kimoto, Yoshinobu Nodasaka, Hidetoshi Matsuyama, and Kazuaki Yoshimune. "Psychrobacter piscatorii sp. nov., a psychrotolerant bacterium exhibiting high catalase activity isolated from an oxidative environment." International Journal of Systematic and Evolutionary Microbiology 60, no. 1 (January 1, 2010): 205–8. http://dx.doi.org/10.1099/ijs.0.010959-0.
Full textAbstract:
A Gram-negative, non-motile, psychrotolerant bacterium exhibiting high catalase activity, designated strain T-3-2T, was isolated from a drain of a fish-processing plant. Its catalase activity was 12 000 U (mg protein)−1, much higher than the activity of the other Psychrobacter strains tested. The strain grew at 0–30 °C and in the presence of 0–12 % NaCl. The predominant isoprenoid quinone was ubiquinone-8 (Q-8), and C16 : 1 ω9c and C18 : 1 ω9c were the predominant cellular fatty acids. The DNA G+C content of strain T-3-2T was 43.9 mol%. 16S rRNA gene sequence phylogeny suggested that strain T-3-2T is a member of the genus Psychrobacter, with the closest relatives being the type strains of Psychrobacter nivimaris (99.2 % similarity), P. aquimaris (98.7 %) and P. proteolyticus (98.5 %). DNA–DNA hybridization showed less than 65 % relatedness with these strains. A phylogenetic tree based on gyrB gene sequences was more reliable, with higher bootstrap values than the 16S rRNA gene sequence-based tree. The result also differentiated the isolate from previously reported Psychrobacter species. Owing to the significant differences in phenotypic and chemotaxonomic characteristics and the phylogenetic and DNA–DNA relatedness data, the isolate merits classification within a novel species, for which the name Psychrobacter piscatorii sp. nov. is proposed. The type strain is T-3-2T (=JCM 15603T =NCIMB 14510T).
Dissertations / Theses on the topic "Drain sequences"
1
Allen, Christopher T. "Global Optimization of an Aircraft Thermal Management System through Use of a Genetic Algorithm." Wright State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=wright1220969610.
Full text
2
Stejskal, Luboš. "Výroba součásti "Kroužek" plošným tvářením." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2012. http://www.nusl.cz/ntk/nusl-230005.
Full textAbstract:
This thesis elaborated within a master degree in 23-03-T002 line, introduces a suggestion of production technology of part „Ring“ by sheet metal forming out of deep-drawing steel W.Nr. 1.0338. Supposed production amount is 250 000 pieces per year. Based on a literary study of problematic of sheet forming for this required part regarding production series, technologies of this of deep drawing and cutting were chosen. According to performed technological calculations, a production process of seven operations was designed. A sequence automatic machine Paust 40 (VVB WMW), was cousin for this suggested process. This machine is particularly appointed for big series and wholesale production of impressions of sheet metal. It is equipped with mechanization and therefore creates a fully automatic line. A tool was designed for this chosen type of machine. Project includes economical evaluations of elaborated of production technology.
3
Chun-YunChiu and 邱俊運. "Generating Variable Animation Sequences for Line drawn Cartoon Faces." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/50453908312598318636.
Full textAbstract:
碩士國立成功大學
資訊工程學系
104
Comics and animations are the well-known art creation. Most people have seen or known about it. One of them is the most popular in Taiwan that is manga and anime. Many people buy or rent manga from rental manga shop and go to movie theater to see animations. A lot of public facility are propaganda by simple anime or manga. They are easier understanding than using text, because they include image. In our work, we focus on manga, line-drawn and anime human face. There are a large number of manga and line-drawn nowadays. Animator create multiple line-drawn images, known as frame, and use illusion to generate animation. They turned to colorful animation by coloring. In our paper, we propose a idea. If we have many manga or line-drawn of the same character. We want to generate a animation automatically. It could be a interesting application and also be a assistant tool for creator. In our paper, our input are several line-drawn face of the same character and a few sample vector graphics. And it can find feature from input face by sample graphics. Next, we map image to 2-dimension space by features. Finally, we can create animation automatically or assign frame by user.
4
Smit, Joukje Anneke. "Koliha–Drazin invertibles form a regularity." Diss., 2010. http://hdl.handle.net/10500/4905.
Full textAbstract:
The axiomatic theory of ` Zelazko defines a variety of general spectra where specified axioms
are satisfied. However, there arise a number of spectra, usually defined for a single element
of a Banach algebra, that are not covered by the axiomatic theory of ` Zelazko. V. Kordula and
V. M¨uller addressed this issue and created the theory of regularities. Their unique idea was
to describe the underlying set of elements on which the spectrum is defined. The axioms of a
regularity provide important consequences. We prove that the set of Koliha-Drazin invertible
elements, which includes the Drazin invertible elements, forms a regularity. The properties of
the spectrum corresponding to a regularity are also investigated.Mathematical Sciences
M. Sc. (Mathematics)
Books on the topic "Drain sequences"
1
Klimenko, Irina, Nikolay Kozlov, Sergey Kostenko, Anastasia Shamustakimova, and Yulian Mavlyutov. Identification and certification of forage grasses (meadow clover, alfalfa, sowing and hop) based on DNA markers. ru: Federal Williams Research Center of Forage Production and Agroecology, 2020. http://dx.doi.org/10.33814/978-5-6043194-9-9.
Full textAbstract:
A technology has been developed for DNA identification and certification of varieties of meadow clover (Trifolium pratense L.), alfalfa (Medicago varia Mart.), Sowing (M. sativa L.) and hop (M. lupuli-na L.) based on molecular analysis with using SSR and SRAP markers. The recommendations contain a description of the sequence of experiments and protocols for DNA typing procedures. The presented methods were developed by the authors on the basis of their own experimental research and using the data available in the literature. A characteristic of informative primers for each marking system is given, a set of DNA identification markers is proposed, and unique molecular genetic formulas of varieties are drawn up as the basis for a reference genetic passport. Methodological recommendations were prepared with the aim of mastering the technology of DNA certification of forage grasses in practice. Designed for managers and specialists of research and control laboratories, can serve as a textbook for students and postgraduates in specialized specialties.
2
Levinson, Stephen C. Speech Acts. Edited by Yan Huang. Oxford University Press, 2016. http://dx.doi.org/10.1093/oxfordhb/9780199697960.013.22.
Full textAbstract:
The essential insight of speech act theory was that when we use language, we perform actions—in a more modern parlance, core language use in interaction is a form of joint action. Over the last thirty years, speech acts have been relatively neglected in linguistic pragmatics, although important work has been done especially in conversation analysis. Here we review the core issues—the identifying characteristics, the degree of universality, the problem of multiple functions, and the puzzle of speech act recognition. Special attention is drawn to the role of conversation structure, probabilistic linguistic cues, and plan or sequence inference in speech act recognition, and to the centrality of deep recursive structures in sequences of speech acts in conversation.
3
Beed, Martin, Richard Sherman, and Ravi Mahajan. Common emergency procedures. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199696277.003.0017.
Full textAbstract:
Transfers and retrievalsRapid sequence intubationLaryngeal mask airway insertionNeedle cricothyroidotomyNeedle thoracocentesisIntercostal chest drain insertionArterial line insertionCentral venous accessIntravenous cutdownIntraosseous accessExternal pacingPericardiocentesisFibreoptic bronchoscopyIntra-abdominal pressure measurementLumbar punctureSengstaken–Blakemore tube insertionProne positioning• Intrahospital transfer (e.g. to ICU or to CT scan)....
4
Clarke, Katherine. Mapping Out the World. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780198820437.003.0002.
Full textAbstract:
Starting from the well-known episode in which Aristagoras presents a map of the world to Cleomenes of Sparta in a bid to persuade him to collaborate against Persia, this chapter explores Herodotus’ presentation of different ‘layers’ of geographical space, ranging from the edges of the earth and the encircling Ocean, through the vast scope of continents and geographical symmetries, through patterning sequences such as the interconnected seas stretching from Asia to the Atlantic, then down through various types of ‘travelled space’. First of these is the world as experienced by armies on the march, then the world of recreational travellers in search of enlightenment or pleasure. Lastly, the geographical picture evoked by lists within the narrative is considered. Throughout, the focus is on illuminating the detailed picture drawn by Herodotus from his authorial distance, but incorporating many different viewpoints to create a complex and subtle sense of geography.
5
Wang, Jason T. L., Bruce A. Shapiro, and Dennis Shasha, eds. Pattern Discovery in Biomolecular Data. Oxford University Press, 1999. http://dx.doi.org/10.1093/oso/9780195119404.001.0001.
Full textAbstract:
Finding patterns in biomolecular data, particularly in DNA and RNA, is at the center of modern biological research. These data are complex and growing rapidly, so the search for patterns requires increasingly sophisticated computer methods. Pattern Discovery in Biomolecular Data provides a clear, up-to-date summary of the principal techniques. Each chapter is self-contained, and the techniques are drawn from many fields, including graph theory, information theory, statistics, genetic algorithms, computer visualization, and vision. Since pattern searches often benefit from multiple approaches, the book presents methods in their purest form so that readers can best choose the method or combination that fits their needs. The chapters focus on finding patterns in DNA, RNA, and protein sequences, finding patterns in 2D and 3D structures, and choosing system components. This volume will be invaluable for all workers in genomics and genetic analysis, and others whose research requires biocomputing.
6
Idris, Murad. Policing Humanity. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190658014.003.0009.
Full textAbstract:
This chapter examines the opposition between productive war and purposeless violence through Immanuel Kant’s and Sayyid Quṭb’s writings on peace. Kant criticizes colonialism, but he passively sanctions its historical structures, and his ambiguities about intervention and statehood open to imperial action. Kant’s discussions of Arabian Bedouins, political economy, and hospitality, and his construction of the globe through imagery drawn from Orientalism, reframe how his peace plan produces an unjust enemy. Meanwhile, Quṭb’s theorizations of empire and postcolonialism diagnose Euro-American empires as unjust enemies. In his neglected peace plan, he proposes reforming the legal order of states in the “Islamic world,” creating a federation, and policing the globe against imperial aggression. The shared sequence of state, law, and federation provides a grammar for determining who polices the globe and for diagnosing whose political form and legal order are wrong. The idea of universal peace anticipates a lawless enemy of peace.
7
Caps, John. Back to Television? University of Illinois Press, 2017. http://dx.doi.org/10.5406/illinois/9780252036736.003.0011.
Full textAbstract:
This chapter details Mancini's return to television. Mancini was offered his own TV series, to be called The Mancini Generation, on which he would discuss and demonstrate film music to a syndicated audience. Undertaking the series was a colossal commitment. The music materials were drawn from his whole backlog of arrangements alongside some new charts, but in addition to the musical rehearsals there were camera rehearsals and host-segment preparations all of which were shot together during one four-week period and then sliced up for insertion into the shows. Unique to each show was a sequence during which Mancini invited one college student enrolled in a film course at some university across the country to take a past Mancini recording and conceive, shoot, and edit an experimental film based on the music. The short films, then, were shown on the program, and Mancini used the opportunity to push support for film and film-scoring study courses in schools of the future. The Mancini Generation was eventually seen on 150 stations nationwide and also led to an RCA album sporting the series title, his first jazz-pop album since the 1960s.
Book chapters on the topic "Drain sequences"
1
Murphet, Julian, and Julian Murphet. "The Law of Diminishing Returns." In Todd Solondz, 1–137. University of Illinois Press, 2019. http://dx.doi.org/10.5622/illinois/9780252042768.003.0001.
Full textAbstract:
This chapter tracks Todd Solondz's canny cinematic homeopathy with the nation's overarching economic decline under several rubrics. The first is the built environment of his films, interested as they are in the aesthetically valueless architecture of “junkspace.” Next, the chapter examines his stylistic posture of “left classicism,” which borrows key aesthetic principles from the dominant industry, only to drain them of their usual affirmative functions. His several ontological gestures of “eternal recurrence,” offered with the twist of a general decline in standards, are then explored. Afterward, the chapter discusses his determined interest in the dynamic opposition between playful sequences of fantasy and escape and unendurable long takes of truly intolerable material. Finally, his thematic preoccupation with the excremental function of the “gift of shit,” which he analyzes in an exhaustive fashion, is studied.
2
Annamalai, E. "The matrix of verb-verb sequences in Tamil." In Verb-Verb Complexes in Asian Languages, 300–326. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780198759508.003.0012.
Full textAbstract:
Verb-Verb sequences characterize many types of grammatical constructions in Tamil. A subset of these sequences, called V-V sequences, characterize a predicate construction which is known otherwise as a complex predicate or compound verbs or serial verbs, though these are not identical. This predicate construction is shared by most Indian languages and found also in languages outside India such as Japanese. One of the verbs in the V-V sequence does not have lexical status referentially, or often even structurally. The comparison of Tamil and Japanese shows that the grammatical functions and the structural features of the verb sequence differ from language to language. An interesting conclusion drawn from this comparison is that specific members of each type of the sequence may be distributed differently across a matrix of types. In other words, an instance of a V-V sequence of Type 1 in one language may belong to Type 3 in another language.
3
Berman, Jules J. "Inferences drawn from temporal sequences." In Logic and Critical Thinking in the Biomedical Sciences, 95–129. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-821364-3.00004-8.
Full text
4
Navarro, Gonzaloz. "Text Databases." In Encyclopedia of Database Technologies and Applications, 688–94. IGI Global, 2005. http://dx.doi.org/10.4018/978-1-59140-560-3.ch113.
Full textAbstract:
A text is any sequence of symbols (or characters) drawn from an alphabet. A large portion of the information available worldwide in electronic form is actually in text form (other popular forms are structured and multimedia information). Some examples are natural language text (e.g., books, journals, newspapers, jurisprudence databases, corporate information, the Web), biological sequences (e.g., ADN and protein sequences), continuous signals (e.g., audio and video sequence descriptions, time functions), and so on. Recently, due to the increasing complexity of applications, text and structured data are being merged into so-called semistructured data, which is expressed and manipulated in formats such as XML (out of the scope of this review).
5
A. Ahmed, Rayan. "Whole Genome Sequencing: A Powerful Tool for Understanding the Diversity of Genotypes and Phenotypes among COVID-19 Infected Patients to Help in Controlling Outbreaks." In Biotechnology to Combat COVID-19 [Working Title]. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96260.
Full textAbstract:
In Wuhan, China (December 2019), viral pneumonia cases of uncertain origin have been reported. The emergency has drawn global attention. To determine the pathogenic potential, joint efforts were conducted by Chinese Multidisciplinary Task Forces. An integral component of wide range of research applications is not only determining the causative agent but also the nucleic acid bases order in biological samples. Research techniques determining genetic material features and its order is called “sequencing”, classified into three generations. Moreover, the first sequencing attempt was conducted and a genetic link identified between samples isolated from China and other previously sequenced Coronaviruses. However, there was patient to patient diversity in terms of clinical and laboratory manifestations and diseases severity. After the genetic material of the causative agent was successfully sequenced, it was named the novel coronavirus causing COVID-19. Here, we review the genome sequences of novel coronavirus infected patients from different countries such as India, Bangladesh and Ecuador compared to China (first reported case), seeking not only to recognize similarities and differences between genome sequences of novel coronavirus, but also to compare them with other forms of coronaviruses family. Utilizing this data will assist in making right decisions minimizing negative consequences of the outbreak.
6
O'Connor, Anne. "Swanscombe: A Standard Stone-Age Sequence for Britain?" In Finding Time for the Old Stone Age. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780199215478.003.0016.
Full textAbstract:
In the early twentieth century, Palaeolithic research seemed to be flourishing on the Continent. Commont was carrying out groundbreaking work in the Somme, and rich hauls were being recovered from the reindeer-caves of France and Spain. France could also boast a research centre: the Institute of Human Palaeontology, where Boule, Breuil, and Obermaier held posts. Britain, though, was weighed down by nostalgia: unfavourable contrasts were being drawn between current research and the glorious decades of the past when Evans and Prestwich had brought such renown to British investigations. This apparent loss of impetus was noted abroad. Boule considered the British to have sunk into insularity after 1875, never to regain their early brilliance; in 1912, Breuil remarked at a luncheon party in Cambridge that no one in England knew anything about prehistory. The British Museum’s Guide to the Antiquities of the Stone Age, published in 1911 at the height of Commont’s work, declared: ‘the French system has now been revised in the light of recent discoveries, and is the basis of all Continental classifications’. It was regretted that the English river drifts had still not received any systematic excavations, and that the implements in these sediments still lay in confusion. This Guide was produced by Reginald Smith of the British Museum under the direction of Charles Hercules Read (1857–1929). In 1912, the same year that Breuil made his disparaging comment, Read arranged for Smith to excavate in one of the most productive Palaeolithic localities of the Thames Valley: Swanscombe village. Smith was assisted by Henry Dewey (1876–1965) of the Geological Survey, but the negotiations that gained Dewey’s help would also reveal differences of opinion between their two respective institutions about the value of Palaeolithic research. The connections drawn by Smith to the Continental sequence after working at Swanscombe would lift the gloom about British backwardness. These connections would also help draw the Palaeolithic and geological sequences closer together.
7
Hobson, R. Peter. "Therapeutic dialogues I." In Brief Psychoanalytic Therapy, 80–94. Oxford University Press, 2016. http://dx.doi.org/10.1093/med:psych/9780198725008.003.0006.
Full textAbstract:
In this chapter the focus moves away from stories of patients who enter treatment, to the nature of interpersonal transactions within particular sessions of Brief Psychoanalytic Therapy. Patient–therapist transactions are represented through succinct segments of dialogue drawn from transcripts of audiotaped sessions. A running commentary is interpolated among these brief sequences of verbal exchange. Special attention is paid to features of the two therapists’ styles of intervention, as well as the nature of shifts in the patients’ communicative stance. All this material anchors aspects of technique in the details of what actually transpires in episodes of Brief Psychoanalytic Therapy.
8
"Researching a Unique CLD Population." In Learning Challenges for Culturally and Linguistically Diverse (CLD) Students With Disabilities, 132–65. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-2069-7.ch006.
Full textAbstract:
Chapter 6 informs the reader of the process of conducting valid, unbiased research. This process begins with a research question or theoretical construct related to the study's purpose and moves the researcher, step by step, through a sequence of activities beginning with the identification of a target population, drawing from that population a representative sample, selecting and applying a research methodology from which relevant data can be drawn, and analyzing those data to arrive at research-based conclusions commensurate with the study's initial question. The chapter connects this process to the central purpose of this work, as presented in foregoing and subsequent chapters.
9
Narahari, Saravu, Madhur Guruprasad Aggithaya, and Terence J. Ryan. "Research-Based Applied Psychophysiology." In Complementary and Alternative Medicine, 492–515. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7039-4.ch023.
Full textAbstract:
The lymphedema is a disfiguring and disabling disease caused by dysfunction of lymphatic system due to damage/block or by lymph overload. Breast Cancer Related Lmyphedema and elephantiasis due to Lymphatic Filariasis are most prevalent world over. This chapter describes the yoga protocols used as a part of integrative medicine treatment, to treat lymphedema. Patients perform yoga in two sessions. It includes warm up, breathing, prolonged exercise with appropriate rests and relaxation. Yoga helps to drain lymph though various mechanisms. Asanas focus on dermal stretch, joint movement, muscle pumps and muscle stretch and pranayamas on lung expansion. Yoga also provides knee strengthening, gait correction and improves shoulder movement. Joint movements and muscle contractions are designed to mimic nodal drainage. Yoga sequence is arranged to achieve a similar role of manual lymph drainage as that of Foldi's Complex Decongestive Therapy. Yoga as a self-care in lymphedema is an effective treatment in endemic communities albeit not supported by randomized controlled trials.
10
Narahari, Saravu, Madhur Guruprasad Aggithaya, and Terence J. Ryan. "Research-Based Applied Psychophysiology." In Research-Based Perspectives on the Psychophysiology of Yoga, 241–62. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-2788-6.ch014.
Full textAbstract:
The lymphedema is a disfiguring and disabling disease caused by dysfunction of lymphatic system due to damage/block or by lymph overload. Breast Cancer Related Lmyphedema and elephantiasis due to Lymphatic Filariasis are most prevalent world over. This chapter describes the yoga protocols used as a part of integrative medicine treatment, to treat lymphedema. Patients perform yoga in two sessions. It includes warm up, breathing, prolonged exercise with appropriate rests and relaxation. Yoga helps to drain lymph though various mechanisms. Asanas focus on dermal stretch, joint movement, muscle pumps and muscle stretch and pranayamas on lung expansion. Yoga also provides knee strengthening, gait correction and improves shoulder movement. Joint movements and muscle contractions are designed to mimic nodal drainage. Yoga sequence is arranged to achieve a similar role of manual lymph drainage as that of Foldi's Complex Decongestive Therapy. Yoga as a self-care in lymphedema is an effective treatment in endemic communities albeit not supported by randomized controlled trials.
Conference papers on the topic "Drain sequences"
1
Caillon, Didier, Benjamin Groschaus, Wilfried Matsiona, Theben Boumba, Manfred Bledou, Nicolas Dupouy, Robert Ilyasov, et al. "Successful Implementation of a Modified Carbonate Emulsion Acid System Combined with an Engineered Diversion Approach Delivers Outstanding Results – A Case Study from the Moho Nord Deep Offshore Field in Congo." In IADC/SPE Asia Pacific Drilling Technology Conference. SPE, 2021. http://dx.doi.org/10.2118/201054-ms.
Full textAbstract:
Abstract Moho Nord deep offshore field is located 80 kilometers offshore Pointe-Noire in the Republic of the Congo. The wells produce crude from the Albian age reservoir and lithology consists of alternating sequences of carbonates and sandstone layers with high heterogeneity and permeability contrast, including the presence vacuolar layers called "hyperdrains". This paper describes the application of a novel acid system and the methodology successfully applied to effectively acid stimulate the Albian drain. The combination of long perforation intervals with lithology and permeability contrasts, natural fractures, and the potential for asphaltene deposition resulted in adoption of a Modified Carbonate Emulsion Acid (MCEA) fluid system containing a solvent to provide asphaltene deposition prevention. The MCEA stimulation treatments were bullheaded from a stimulation vessel and an engineered diversion process was implemented for effective acid diversion using a combination of mechanical ball sealers and a degradable particle system (DPS). The selection of number of ball sealers and the DPS diverter design depended upon the interpretation of zone permeability profile from the logs, and the final distribution of perforations selected along the drain. A fluid placement simulator indicated low sealing efficiency of the ball sealers would lead to an overstimulation of the highest permeability areas. Subsequent simulations indicated that the DPS would provide better acid coverage with lower skin (S). Results and observations presented indicate that the decision to improve the acid diversion design and combine ball sealers with a DPS diversion technique to improve zonal coverage was validated. During the stimulation treatment execution, the high stimulation treatment efficiency was clearly apparent from the pressure responses to the acid and the diverter system which sealed off perforations and diverted the treatment to other layers with lower permeability. The MCEA also has proven to have self-diverting properties due to its high viscosity and low reaction rate which creates a better coverage of the drain, even with limited pumping rate, allowing live acid penetrating deeper into the formation. The production results reported from the 15 wells stimulation campaign (10 producers, 5 injectors) indicated that the productivity indexes (PI) exceeded expectations and resultant post-stimulation skin values ranged from −2.5 to −4.1. The Moho Nord deep offshore stimulation campaign yielded outstanding production results and showed significant validation for use of the MCEA system and the diversion methodology applied. On the producer wells the use of both chemical and mechanical diversion was valuable, as the DPS proved to complement the Ball Sealers for layers with lower injectivity and also at the high injection rates. High injectivity gain coupled with effective diversion was crucial for enhanced wormholing and good drain coverage.
2
Serry, Amr M., Sultan D. Al-Hassani, Shafiq N. Ahmed, Owais A. Khan, Hassan F. Aboujmeih, Hasan Zakaria, Olivier P. Pippi, Israa A. Salim, Amro Abdel-Halim, and Adam Donald. "UTILIZING NEAR AND FAR FIELD BOREHOLE MEASUREMENTS FOR A COMPREHENSIVE CARBONATE FRACTURE CHARACTERIZATION." In 2021 SPWLA 62nd Annual Logging Symposium Online. Society of Petrophysicists and Well Log Analysts, 2021. http://dx.doi.org/10.30632/spwla-2021-0020.
Full textAbstract:
The lower cretaceous carbonate sequence, offshore Abu Dhabi is represented by the third to forth order sequences. Limestone is the dominant lithology for this group of ramp to intrashelf basin sediments. Fracture intensity and density vary vertically along the sequences, controlled by rock texture contrast. Dense layers are heavily fractured compared to the porous bodies throughout these Formations. Two dominant sets of fractures are observed throughout the field, NW-SE and NNE-SSW. Historical well test data indicate strong preferential flow in that same direction compared to less flow in the NW-SE trend (anisotropic drainage behavior). The objective of this study is to demonstrate the capabilities of simultaneously acquired near and far field borehole sonic reflection logging measurements to characterize the present fractures along a dedicated horizontal drain for data gathering. Borehole image log interpretation and other well logs are integrated. Understanding fracture systems using resistivity imaging solely could be challenging due to the limited depth of investigation of the measurement (at the well location). Well trajectory, (open) fracture density and orientation can cause uncertainties in the number of fractures that intersect the borehole. Primary fractures could be abundant away from the borehole but still contributing to flow and reservoir pressure behavior. With a unique extended depth of investigation as well as azimuthal sensitivity, dipole sonic imaging is able to reach tens of meters into the formation and provide fracture intensity and extension information in the far field. A new scale of data integration using near field measurements from monopole sonic imaging, Stoneley wave reflectivity analysis and borehole image interpretation for a comprehensive fractures characterization is accomplished. A set of structural incidents could be detected tens of feet away from the borehole, some seemed to be extending towards the borehole wall itself as seen by the Stoneley reflectivity and the sonic-resistivity borehole imagers. Open fractures are clearly characterized in terms of orientation and aperture, extension inside the reservoir could be recognized, small-scale fractures near the borehole could be discriminated, as well as the closed ones, in addition to the dense stylolite markers. Comparisons with offset cores, seismic and offset well data shows a range of coherence. Most of the fracture clusters were observed at the stylolite boundaries. The main orientation of these fractures are consistent with the present day in-situ stress orientation. The integration of data with respect to resistivity, sonic borehole image and Stoneley wave data from sonic monopole processing are in coherence. Far-field dipole shear sonic imaging adds valuable information to investigate the major carbonate reservoir structural incidents away from the borehole. The value is maximized by integration with the high-resolution borehole image that drew some conclusions on the presence of different sets of fractures distribution and their nature.
3
Reich, Alton. "System and Solenoid Valve Interaction Leading to Spurious Opening." In ASME 2018 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/pvp2018-84118.
Full textAbstract:
In a pressurized water reactor the high pressure system vent lines from the pressurizer and reactor are routed to a common header that can be emptied to the refueling water storage tank or a drain tank. During plant testing the valves are operated in the following sequence: the pressurizer isolation valve is opened to pressurize the common header, the pressurizer isolation valve is closed, then the drain tank isolation valve is opened. This sequence of valve operation verifies that the valves open and close properly — opening the pressurizer isolation valve allows steam to enter the common header and is verified by pressure indication via a pressure transducer, and opening the drain tank isolation valve decreases the pressure in the common header and verifies that the pressurizer isolation valve closed properly. During this sequence of valve actuation, the other solenoid valves in the system are subject to transient steam pressures. During one test sequence an isolation valve to the refueling water storage tank indicated that it was not closed for a period of several seconds. Since there is only one pressure transducer in the common header, a systemlevel analysis was performed to obtain a more detailed understanding of the transient pressures in the common header, and how that might affect solenoid valve performance.
4
Zhang, Y. H., and S. J. Maddox. "Fatigue Testing of Full Scale Girth Welded Pipes Under Variable Amplitude Loading." In ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/omae2012-83054.
Full textAbstract:
In the fatigue design of steel catenary risers there are concerns regarding the fatigue damage to girth welds from low stresses, below the constant amplitude fatigue limit, in the loading spectrum and the validity of Miner’s cumulative damage rule. In both cases there is increasing evidence that current design methods can be non-conservative. These fundamental issues were addressed in a recent JIP. A key feature was development of the resonance fatigue testing rigs to enable them to test full-scale pipes under variable amplitude loading. Such tests were performed under a loading spectrum representative of that experienced by some risers, with many tests lasting over 100 million cycles to investigate the fatigue damage due to small stresses as well as the validity of Miner’s rule. However, the resonance rigs are only capable of producing spectrum loading by gradually increasing or decreasing the applied load, whereas more ‘spiky’ random load sequences may be relevant in practice. Therefore the programme also included fatigue tests in conventional testing machines on strip specimens cut from pipes to compare the two types of loading sequence. This paper presents the results of these tests, conclusions drawn and recommendations for changes to current fatigue design guidance for girth welded pipes regarding the definition of the fatigue limit, allowance for the damaging effect of low stresses and the validity of Miner’s rule.
5
Chen, Shiang-Fong, and Xiao-Yun Liao. "Stable Assembly Sequence Planning Using a Genetic Algorithm." In ASME 1999 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/detc99/dfm-8912.
Full textAbstract:
Abstract Stability problems in assembly sequence planning have drawn great research interest in recent years. Most proposed methodologies are based on graph theory and involve complex geometric and physical analyses. As a result, even for a simple structure, it is difficult to take all the criteria into account and to implement real world solutions. This paper uses a genetic algorithm (GA) to synthesize different criteria fo generating a stable assembl plan. Three matrices (Connection Matrix, Supporting Matrix, and Interference-Free Matrix) are generated from an input B-rep file to represent the CAD information of a given product. The stability of a given assembly plan and reorientation numbers are incorporated into the fitness function of the genetic assembly planner. The proposed planning algorithm has been successfull implemented. This paper also presents implemented planne performance as measured for two industry-standard structures.
6
Ko, Seung Hwan, Inkyu Park, Heng Pan, Nipun Misra, and Costas P. Grigoropoulos. "Low Temperature, All-Inorganic Nanoparticle Solution Process for ZnO Nanowire Network Transistor Fabrication on a Polymer Substrate." In ASME 2009 Heat Transfer Summer Conference collocated with the InterPACK09 and 3rd Energy Sustainability Conferences. ASMEDC, 2009. http://dx.doi.org/10.1115/ht2009-88062.
Full textAbstract:
All-solution processed, low-temperature zinc oxide nanowire network transistor fabrication was demonstrated by combining 1) source-drain electrode fabrication by direct nanoimprinting of metal nanoparticle solution and 2) zinc oxide nanowire network based channel synthesized by a simple hydrothermal approach in water. This simple process can produce high resolution metal contact transistors with inorganic semiconductor nanowire active material in a fully maskless sequence, eliminating the need for lithographic and vacuum processes. The temperature throughout the processing was under 140°C, which will enable further applications to electronics on low-cost, large-area flexible polymer substrates.
7
Tolentino, R. E., C. J. Roderos, N. J. Ballesteros, M. R. Papag, A. V. Tengco, and A. P. Sunglao. "Recognition of Air-Drawn Alphanumeric Characters by Applying Slope Orientation Sequence Matching Algorithm Using Leap Motion Controller." In 2019 IEEE 11th International Conference on Humanoid, Nanotechnology, Information Technology, Communication and Control, Environment, and Management ( HNICEM ). IEEE, 2019. http://dx.doi.org/10.1109/hnicem48295.2019.9072879.
Full text
8
Rappard, A. V., and A. Wicki. "Modular Concept of a Gas Turbine Power Plant." In ASME 1985 Beijing International Gas Turbine Symposium and Exposition. American Society of Mechanical Engineers, 1985. http://dx.doi.org/10.1115/85-igt-1.
Full textAbstract:
A modular concept of a power plant has been developed on the basis of a modern 45 MW gas turbine. The most important aspects of this design concept described in this paper, such as layouts, cooling system and electrical equipment, take into consideration the requirements in different countries. In general, a customer demands short delivery and erection times, quick commissioning and good quality. Examples of plant layout planning, the mechanical equipment drawn upon and the sequence of assembly are outlined.
9
Kong, Tony X., Chunrui Deng, Ivan Vrbanic, and Ivica Basic. "PSA Conservatism Analysis and Quantification for the LOFW Accident." In 2013 21st International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/icone21-15299.
Full textAbstract:
The conservatism was introduced in the probabilistic safety analysis (PSA) while successes criteria for the event tree were determined. The conservatism has strong relation with the uncertainty but independent with the uncertainty, and the conservatism could significantly influence the CDF results, contribution of dominant sequence, and sensitivity analysis. For methodology, the conservatism in PSA was identified, conservative numbers were defined to quantify the conservatism. Addressing the loss of feed water (LOFW) accident at the PWR, the probability distributions for the function events of the event tree were defined, and the conservatism was quantified based on the PSA insights and sensitivity analysis. The methodology and the application of the conservative numbers were discussed and conclusions were drawn.
10
Maleki, Amir, and Ian Frigaard. "Using Lightweight or Low Viscosity Preflushes for Primary Cementing of Surface Casing." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77615.
Full textAbstract:
Preflushes are often used as part of the sequence of fluids pumped in primary cementing. Usually two functions are served by preflushes: I) to wash the drilling fluid ahead, by a combination of turbulence and chemical reaction; II) to provide a chemically compatible spacer between the lead slurry and the drilling mud. In some cases a wash precedes a spacer, but often only a single preflush is used. We consider well parameters typical of surface casing cementing in North Eastern British Columbia. Using a two-dimensional model of annular displacement flows, we show that the wash concept is flawed. In particular, in a sequence of simulations varying from intermediate density to low density we show that the wash progressively advances ahead of the lead slurry, channeling rapidly up the wide side of the annulus. Even when fully turbulent, it is ineffective at displacing mud from around the annulus, invalidating the motivation of chemical cleaning through contact time. Furthermore, the advance along the wide side of the annulus drains the volume of fluid separating the cement from drilling mud. Thus, the idea that the wash provides a barrier between slurry and and mud is invalid.