Relevant bibliographies by topics / Hole cleaning

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Hole cleaning'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Hole cleaning"

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Ahmed, Ramadan M., and Nicholas E. Takach. "Fiber Sweeps for Hole Cleaning." SPE Drilling & Completion 24, no. 04 (2009): 564–73. http://dx.doi.org/10.2118/113746-pa.

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Carpenter, Chris. "Hole-Cleaning Fibers Improve Cuttings-Carrying Capacity." Journal of Petroleum Technology 73, no. 05 (2021): 63–64. http://dx.doi.org/10.2118/0521-0063-jpt.

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This article, written by JPT Technology Editor Chris Carpenter, contains highlights of paper SPE 203147, “Investigating Hole-Cleaning Fibers’ Mechanism To Improve Cutting Carrying Capacity and Comparing Their Effectiveness With Common Polymeric Pills,” by Mohammad Saeed Karimi Rad, Mojtaba Kalhor Mohammadi, SPE, and Kourosh Tahmasbi Nowtarki, International Drilling Fluids, prepared for the 2020 Abu Dhabi International Petroleum Exhibition and Conference, Abu Dhabi, held virtually 9–12 November. The paper has not been peer reviewed. Hole cleaning in deviated wells is more challenging than in vertical wells because of the boycott effect or the eccentricity of the drillpipe. Poor hole cleaning can result in problems such as borehole packoff or excessive equivalent circulating density. The complete paper investigates a specialized fibrous material (Fiber 1) for hole-cleaning characteristics. The primary goal is to identify significant mechanisms of hole-cleaning fibers and their merits compared with polymeric high-viscosity pills. Hole-Cleaning Indices Based on a review of the literature, most effective parameters regarding hole cleaning in different well types were investigated. These parameters can be classified into the following five categories: - Well design (e.g., hole angle, drillpipe eccentricity, well trajectory) - Drilling-fluid properties (e.g., gel strength, mud weight) - Formation properties (e.g., lithology, cutting specific gravity, cuttings size and shape) - Hydraulic optimizations (e.g., flow regime, nozzle size, number of nozzles) - Drilling practices (e.g., drillpipe rotation speed, wellbore tortuosity, bit type, rate of penetration, pump rate) In this research, rheological parameters and parameters of the Herschel-Bulkley rheological model are considered to be optimization inputs to increase hole-cleaning efficiency of commonly used pills in drilling operations. The complete paper offers a detailed discussion of both the importance of flow regime and the role of the Herschel-Bulkley rheological model in reaching a better prognosis of drilling-fluid behavior at low shear rates. The properties of the fibrous hole-cleaning agent used in the complete paper are provided in Table 1. Test Method Two series of tests were performed. The medium of the first series is drilling water, with the goal of evaluating the efficiency of Fiber 1 in fresh pills. The second series of tests was per-formed with a simple polymeric mud as a medium common in drilling operations. Formulations and rheological properties of both test series are provided in Tables 4 and 5 of the complete paper, respectively.
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Satiyawira, Bayu. "EVALUASI HOLE CLEANING SUMUR PANAS BUMI TERHADAP PRODUKSI UAP PADA SUMUR Z DI LAPANGAN S." PETRO 7, no. 3 (2019): 93. http://dx.doi.org/10.25105/petro.v7i3.3815.

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<p align="center"><strong>ABSTRAK</strong></p><p>Sumur Z adalah sumur panasbumi dengan fluida produksi berjenis dominan uap (steam dominated) yang telah mulai berproduksi dari Tahun 1988 dengan kapasitas produksi uap sebesar 19 kg/s, seiring berjalannya waktu di awal Tahun 2015 Sumur Z mengalami penurunan produksi menjadi 7 kg/s sehingga kondisi ini menyebabkan Sumur harus ditutup. Dalam usaha untuk memperbaiki Sumur Z diperlukan analisis untuk menemukan terlebih dahulu penyebab terjadinya penurunan produksi dimana hasil analisis ini akan menentukan apakah sumur Z masih bisa diperbaiki atau tidak, karena apabila penyebab penurunan produksi bukan disebabkan oleh lubang sumur maka sumur ini tidak dapat diperbaiki karena pada saat penulisan ini dibuat belum ditemukan metode untuk perbaikan reservoir dominasi uap. Penelitian ini akan menunjukan efektifitas dari hole cleaning bagian dalam sumurterhadap produktifitas Sumur Z. Data-data yang akan dipergunakan diperoleh dari Perusahaan X, berupa data produksi harian dan data pressure-temperature-spinner sebelum serta setelah hole cleaning sumur. Metode yang akan dipergunakan untuk analisis kondisi lubang sumur Zdalah persamaan derivatif uap (Jorge A. Acuna, 2008) yang akan memperlihatkan penyebab dari terjadinya penurunan produksi dan untuk melihat efektivitas dari hole cleaning sumur terhadap penurunan produksi Sumur Z akan dilakukan dengan metode analisis pressure-temperatur-spinner sebelum dan sesudah dilakukan proses hole cleaning sumur yang akan menghasilkan perubahan produksi hasil dari hole cleaning Sumur Z. Hasil dari evaluasi ini akan menunjukan kemampuan analisis dari persamaan derivatif uap dalam penentuan kondisi sumur, dan efektivitas dari hole cleaning sumur pada sumur dengan produksi dominan uap. Hasil hole cleaning sumur pada sumur dengan jenis dominasi uap juga akan berpengaruh pada fluida yang terproduksikan oleh Sumur Z.</p>
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Tatosov, Alexey V., and Artem I. Varavva. "Cleaning the Bottom-Hole Zone of Wells." Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy 2, no. 3 (2016): 85–93. http://dx.doi.org/10.21684/2411-7978-2016-2-3-85-93.

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Sifferman, T. R., and T. E. Becker. "Hole Cleaning in Full-Scale Inclined Wellbores." SPE Drilling Engineering 7, no. 02 (1992): 115–20. http://dx.doi.org/10.2118/20422-pa.

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Bybee, Karen. "Drilling-Fluids Displacement and Cased-Hole Cleaning." Journal of Petroleum Technology 58, no. 11 (2006): 60–63. http://dx.doi.org/10.2118/1106-0060-jpt.

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Iyoho, A. W., J. M. Horeth II, and R. L. Veenkant. "A Computer Model for Hole-Cleaning Analysis." Journal of Petroleum Technology 40, no. 09 (1988): 1183–92. http://dx.doi.org/10.2118/16694-pa.

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Hemphill, A. T., and Tom Pogue. "Field Applications of ERD Hole Cleaning Modeling." SPE Drilling & Completion 14, no. 04 (1999): 247–53. http://dx.doi.org/10.2118/59731-pa.

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Allawi, Raed H., and Faleh H. M. Almahdawi. "Better Hole Cleaning In Highly Deviated Wellbores." IOP Conference Series: Materials Science and Engineering 579 (August 16, 2019): 012007. http://dx.doi.org/10.1088/1757-899x/579/1/012007.

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Goh, Felicia, Tjin Tjin Tjoa, Kwee Liang Yeo, and Zainab Ismail. "Challenges in Sub-Micron Contact Hole Cleaning." ECS Transactions 11, no. 2 (2019): 267–74. http://dx.doi.org/10.1149/1.2779388.

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Dissertations / Theses on the topic "Hole cleaning"

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Gao, Erhu. "Annular flow of Herschel-Bulkley non-Newtonian fluids and mathematical modelling of efficient hole cleaning at various hole angles." Thesis, Heriot-Watt University, 1994. http://hdl.handle.net/10399/2128.

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The work detailed in this thesis has formed a major part of an industry sponsored project entitled "Drilled Cuttings Transport in Deviated Wells" in the Department of Petroleum Engineering, Heriot-Watt University. The contributions by the author to the project form the basis of this thesis, which includes both the theoretical and experimental investigations into drilled cuttings transport at various hole angles. It is composed of the following major areas: [1] Annular flow of Herschel-Bulkley t1uids: The various flow equations including the fluid velocity profile, viscosity profile, shear stress/shear rate profile for fluid flow of Herschel-Bulkley fluids through concentric annuli without pipe rotation were derived and numerically solved by the author. [2] Theoretical modelling of the minimum transport velocity (MTV) required for adequate cuttings transport in deviated wells: Two classic concepts - fluid drag force and fluid lift force were successfully used to model the complicated cuttings transport process. Two MTV models were developed by the author for cuttings removal in concentric annuli without pipe rotation. One is the MTV model for cuttings rolling and the other is the MTV model for cuttings suspension. [3] Development of a new model for cuttings settling velocity in dynamic non- Newtonian drilling fluids: A new technique was proposed by the author to derive the cuttings settling velocity in dynamic non-Newtonian fluids based on the measured MTV for vertical hole cleaning. The cuttings settling velocity data were then used for the development of a new model for cuttings settling velocity at dynamic flow conditions. As well as the predictions of cuttings settling velocity profile and cuttings transport velocity profile across the annulus, this model was also used for the predictions of the MTV for vertical hole cleaning in concentric annuli without pipe rotation.[4] Cuttings transport/Annular now experiments: The author contributed to the design and the implementation of an extensive experimental programme to investigate cuttings transport at various hole angles. The experiments were designed to provide the data base required for the development and validation of the MTV models by the author. Annular flow experiments were also designed and conducted to validate the various annular flow equations derived by the author. [5] Extension of the MTV models: A new method was devised by the author so that the MTV models were able to be extended from concentric annuli without pipe rotation into concentric annuli with pipe rotation and eccentric annuli with/without pipe rotation using the annular flow modelling by Larrucia'f?'. The effect of drill pipe orbital motion on the MTV, which was from the team work(88), was also incorporated into the MTV models. [6] The development of the MTV package: The author has developed all the source codes for the development of a new MTV package for hole cleaning design and analysis and has also supervised the detailed development of the package. [7] Field guidelines: Field guidelines on how to improve drilled cuttings transport in actual drilling operations were developed by the author based on both the theoretical modelling and the experimental results.
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Mishra, Nekkhil. "Investigation of hole cleaning parameters using computational fluid dynamics in horizontal and deviated wells." Morgantown, W. Va. : [West Virginia University Libraries], 2007. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5111.

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Thesis (M.S.)--West Virginia University, 2007.<br>Title from document title page. Document formatted into pages; contains x, 65 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 58-60).
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Sorgun, Mehmet. "Modeling Of Newtonian Fluids And Cuttings Transport Analysis In High Inclination Wellbores With Pipe Rotation." Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12612385/index.pdf.

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This study aims to investigate hydraulics and the flow characteristics of drilling fluids inside annulus and to understand the mechanism of cuttings transport in horizontal and deviated wellbores. For this purpose, initially, extensive experimental studies have been conducted at Middle East Technical University, Petroleum &amp<br>Natural Gas Engineering Flow Loop using water and numerous drilling fluids for hole inclinations from horizontal to 60 degrees, flow velocities from 0.64 m/s to 3.05 m/s, rate of penetrations from 0.00127 to 0.0038 m/s, and pipe rotations from 0 to 120 rpm. Pressure loss within the test section and stationary and/or moving bed thickness are recorded. New friction factor charts and correlations as a function of Reynolds number and cuttings bed thickness with the presence of pipe rotation for water and drilling fluids in horizontal and deviated wellbores are developed by using experimental data. Meanwhile empirical correlations that can be used easily at the field are proposed for predicting stationary bed thickness and frictional pressure loss using dimensional analysis and the effect of the drilling parameters on hole cleaning is discussed. It has been observed that, the major variable influencing cuttings transport is fluid velocity. Moreover, pipe rotation drastically decreases the critical fluid velocity that is required to prevent the stationary cuttings bed development, especially if the pipe is making an orbital motion. A decrease in the pressure loss is observed due to the bed erosion while rotating the pipe. Cuttings transport in horizontal annulus is modeled using a CFD software for different fluid velocities, pipe rotation speeds and rate of penetrations. The CFD model is verified by using cuttings transport experiments. A mathematical model is also proposed to predict the flow characteristics of Newtonian fluids in concentric horizontal annulus with drillpipe rotation. The Navier-Stokes equations of turbulent flow are numerically solved using finite differences technique. A computer code is developed in Matlab 2007b for the proposed model. The performance of the proposed model is compared with the experimental data which were available in the literature and gathered at METU-PETE Flow Loop as well as Computational Fluids Dynamics (CFD) software. The results showed that the mechanistic model accurately predicts the frictional pressure loss and the velocity profile inside the annuli. The model&rsquo<br>s frictional pressure loss estimations are within an error range of &plusmn<br>10%.
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Benjamin, Michael L. "Cleaning Product Chemical Exposures Measured in a Simulated Home Healthcare Work Environment." University of Cincinnati / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1573224213774289.

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Gericke, Adine. "A comparison of the effect of the mechanical wash action on textile fabric deterioration and soil removal efficiency." Thesis, Stellenbosch : Stellenbosch University, 2001. http://hdl.handle.net/10019.1/52065.

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Thesis (MSc )--University of Stellenbosch, 2001.<br>ENGLISH ABSTRACT: Washing and cleansing in an aqueous washing solution is a complex process involving the interaction of numerous physical and chemical processes. Investigations indicate that various factors present during repeated laundering might have an adverse effect on textile fabrics. Little is known, however, about the effect of the different mechanical wash actions on the deterioration of textiles. The automatic washing machines commonly used in South African households are often broadly classified as top loaders and front loaders. On closer inspection, however, it becomes clear that marked differences exist between the horizontal drum machines (H), vertical drum agitator type (V(A)) and vertical drum impeller type machines (V(/)). The effect of laundering on the wear life of textile fabrics has been extensively investigated, but a serious need for research on the effect of the different mechanical washing actions of the different washing machines on textile fabrics exists on both national and international level. A number of factors have an effect on textile deterioration during washing, e.g. number of washes, temperature of wash liquid, detergent type as well as fabric finishes and water quality. Fabric properties like changes in tensile strength, print deterioration and fraying, as well as electron microscope photographs, were used as indicators of mechanical deterioration to textiles. The broad aim of this exploratory study was firstly, to compare the effect of repeated washing in different domestic automatic washing machines (commonly used in South Africa) on the possible mechanical damage to textile fabrics and, secondly, to compare the soil removal efficiency of the mechanical wash actions of the different machines. An experimental study was therefore decided on. The washing of the test fabrics, as well as the testing, was carried out under controlled conditions in a laboratory. Apart from the different mechanical wash actions of the individual machines, the effect of the variables wash temperature, level of detergent and number of washes, was also investigated. This was done by measuring tensile strength, print deterioration and fraying propensity on samples laundered repeatedly at 40°C or 60°C, with and without detergent in the washing liquid, and comparing the colour change measured on laboratory-soiled test fabrics after washing. Analysis of the mechanical wash actions of the seven washing machines compared in this study indicated conspicuous differences among machines. It can be concluded that the mechanical wash action in the category V(A) machines is the most severe, and causes the highest reduction in tensile strength, the greatest print deterioration and the highest degree of fraying. These machines did not, however, exhibit greater soil removal efficiency than the other two categories of washing machines. The machines from category H did not exhibit a significantly different soil removal efficiency than those from category V(A), but their mechanical wash action proved to be less severe. Category V(/) machines seem to have the most delicate wash action and will probably cause the slightest fabric deterioration over the long term, but unfortunately produces poor soil removal efficiency results. This study also confirmed that washing fabrics in water alone causes more deterioration of tensile strength in fabrics than washing with detergent in the wash solution. Due to the limited scope and exploratory nature of this research/study, certain aspects of automatic washing machine processes could not be tested empirically. Recommendations for future research and implications for consumers were formulated.<br>AFRIKAANSE OPSOMMING: Was en skoonmaak in 'n waterige oplossing is 'n komplekse proses wat 'n interaksie tussen verskeie fisiese en chemiese prosesse behels. Ondersoeke dui aan dat verskeie van die faktore teenwoordig tydens herhaalde wasprosesse 'n nadelige effek op tekstielstowwe mag he. Baie min is egter bekend oor die effek van die verskillende meganiese wasaksies op die degenerasie van tekstiele. Die outomatiese wasmasjiene wat algemeen in Suid-Afrikaanse huishoudings gebruik word, word dikwels breedweg geklassifiseer as bolaaiers en voorlaaiers. By nadere ondersoek word dit egter duidelik dat daar opvallende verskille bestaan tussen die horisontale drom masjiene (H), die vertikale drom roerder tipe ((V)A)) en die vertikale drom stuwer tipe (V(/)) masjiene. Die effek van was op die draleeftyd van tekstielstowwe is uitvoerig ondersoek, maar daar bestaan op beide nasionale en internasionale vlak In ernstige behoefte aan navorsing oor die effek van die verskillende meganiese wasaksies van die verskillende wasmasjiene op tekstielstowwe. Faktore 5005 die aantal wasse, temperatuur van die wasoplossing, detergent tipe, water kwaliteit en tekstielstoftipe en -afwerking(s) het In effek of tekstieldegenerasie gedurende was. Tekstielstofeienskappe 5005 veranderinge in die breeksterkte van die tekstielstof of die tekstielstofmassa per eenheidsarea, agteruitgang van bedrukking, rafeling, sowel as elektronmikroskoop foto's word as aanduiding van meganiese degenerasie t.o.v. tekstiele beskou. Die oorkoepelende doe I van hierdie eksploratiewe studie was eerstens, om die effek te vergelyk van herhaalde was in verskillende outomatiese wasmasjiene (algemeen in gebruik in Suid-Afrika) op die moontlike meganiese beskadiging aan tekstielstowwe, en tweedens, om die doeltreffendheid van vuilverwydering op die wasaksies van die verskillende masjiene te vergelyk. Daar is gevolglik op In eksperimentele studie besluit. Die was van die tekstielstowwe, sowel as die laboratoriumtoetse, is onder gekontroleerde atmosferiese toestande in In laboratorium uitgevoer. Afgesien van die verskillende meganiese wasaksies van die individuele masjiene, is die effek van die veranderlikes westemperetuur, detergentv!ak en aanta! wasse ook ondersoek. Dit is gedoen deur die bepaling van breeksterkte en die meting van die mate van agteruitgang van bedrukking en mate van geneigdheid tot rafeling van kledingstowwe na herhaalde was by 40°C en 60°C, met en sonder detergent in die wasvloeistof. Die kleurverandering na was is ook gemeet op laboratorium gevlekte monsters. Die analise van die meganiese wasaksie van die sewe wasmasjiene wat in hierdie studie vergelyk is, het opvallende verskille tussen masjiene uitgewys. Daar kan tot die gevolgtrekking gekom word dat die meganiese wasaksie in kategorie V(A) masjiene die ergste is, wat gevolglik die grootste verlaging in breeksterkte en die meeste afieruitgang van bedrukking en rafeling veroorsaak het. Hierdie masjiene het egter nie meer doeltreffende vuilverwydering tot gevolg gehad in vergelyking met die ander kategoriee van wasmasjiene nie. Die masjiene in kategorie H het nie 'n betekenisvolle verskil in doeltreffenheid van vuilverwydering van die van kategorie V(A) getoon nie, maar die meganiese wasaksie was minder straf. Kategorie V(/) masjiene het blykbaar die mees delikate wasaksie en sal moontlik die minste tekstielstof degenerasie oor die langtermyn toon, maar ongelukkig is die resultate t.o. v. die doeltreffendheid van vuilverwydering swak. Die studie bevestig dat die was van tekstielstowwe in water aileen 'n groter verlaging in breeksterkte van tekstielstowwe veroorsaak as wat die geval is wanneer met 'n detergent in die wasvloeistof gewas word. Weens die beperkte omvang en eksploratiewe aard van die studie kon sekere aspekte van die outomatiese wasprosesse nie empiries getoets word nie. Aanbevelings vir toekomstige navorsing en implikasies vir verbruikers is geformuleer.
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Erlank, Lara. "Understanding South African herbicide workers’ residual take-home exposure risks from personal protective equipment cleaning and storing practices." Master's thesis, University of Cape Town, 2018. http://hdl.handle.net/11427/29322.

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Exposure to pesticides has been associated with several adverse health effects. When workers who spray pesticides take contaminated Personal Protective Equipment (PPE) and work clothes home, those items pose a risk of cross-contamination. Agriculture employers are recommended to make facilities available for workers to clean and store contaminated items at the workplace to reduce the risk of cross-contamination. However, little research has been conducted on forestry workers, for whom at-work cleaning and storage facilities may be less feasible. Working for Water (WfW) is a South African programme that focuses on removing invasive alien vegetation and alleviating poverty through providing job opportunities to unemployed individuals in low-income settings. WfW forestry workers use herbicides to remove the invasive vegetation. Unlike agricultural workers, WfW forestry workers undertake projects that are transient and tend to be on mountainous or steep terrain. The work environment poses challenges for at-work access to amenities or facilities to clean and store contaminated PPE. Workers have few alternatives but to take contaminated items home. WfW safety protocols do not currently address the risks associated with take-home residues or indicate how workers should clean and store contaminated items. This study is part of a larger project focusing on developing protocols to reduce the risks of cross-contamination and exposure to residues. This dissertation provides baseline data for improved WfW safety protocols through the exploration of workers’ at-home risks of cross-contamination, and the role that worker perceptions and access to amenities have on cleaning and storing behaviors for contaminated items. The Protocol (Part A) describes the methods used to collect and analyze the data. The Literature Review (Part B) presents the risks of take-home residues associated with cross-contamination and the importance of exploring workers’ perceptions and access to amenities to promote safety compliance. The Article (Part C) explores WfW workers’ cleaning and storing behaviors, what contaminated items are taken home, the workers’ access to amenities in the home, and the workers’ perceived risk of exposure. Questionnaires were administered to 27 WfW workers across three excavation sites (Tokai, Citrusdal and Hermanus) that were selected based on convenience sampling. Findings showed that most of the participants took contaminated items home daily. Many participants (55.2%) did not have access to running water. Access to running water and type of housing influenced whether the contaminated items were washed indoors or outdoors, and how they were washed. WfW participants who lived in a shack were more likely to leave contaminated items on the couch or bed or with other clothing items than those living in permanent dwellings. Those workers were more likely to keep them in a non-permeable transport bag, outside, or separate drawers away from clean items. The majority of subjects (65.5%) perceived exposure to herbicides as dangerous to their health. The participants’ perceived risk was associated with whether they took contaminated PPE items home, but not how they were cleaned or stored. WfW Safety protocols should emphasize the importance of keeping contaminated items contained and reducing contact with household surfaces or clean clothes. Workers’ cleaning and storing practices and their associated risk of crosscontamination are largely determined by the amenities they have access to. For new safety protocols to be effective, they need to be realistic and take into account the constraints workers face.
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Nilsson, Malin, and Sanna Munkbo. "Nanoteknik i textilier : För framtidens arbetskläder i hemtjänsten." Thesis, Högskolan i Borås, Institutionen Textilhögskolan, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:hb:diva-20931.

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Det har blivit allt vanligare att sjukvården i Sverige flyttas ut till vårdtagarnas hem. De kan med hjälp av hemtjänst få bo kvar i sina egna hus längre men samtidigt få den hjälp de behöver. År 2007 använde sig totalt 153 723 personer av dessa tjänster runt om i Sverige. De plagg som personalen bär utsätts för många olika typer av yttre påfrestningar vid hembesök hos vårdtagarna. Smittspridning inom vården sker främst via personalens händer och kläder.Nanoteknologi är en framväxande teknik som gått på högvarv inom många olika områden under det senaste årtiondet. Forskning pågår som involverar nanoteknologi för att förbättra egenskaper eller för att skapa funktionella textilier som kan få egenskaper som antibakteriella, lättrengörliga, vatten- och fläckavvisande samt luktfria. Syftet är att underska om nanoteknik kan användas i det textila materialet i arbetskläder inom hemtjänsten för att bättre stå emot yttre påfrestningar. Det finns idag många problem inom området arbetskläder och hygien, vi vill därför undersöka om denna teknik kan vara en av lösningarna.Nanoteknik för textilier har två inriktningar. Den ena strävar främst efter att använda nanostorleken för att skapa nanostrukturer under själva tillverkningsprocessen, medan den andra är inriktad mot ytbehandlingsprocesser. I rapporten ligger fokus på beläggningsmetoden och de självrengörande och antibakteriella egenskaperna som kan skapas hos ett material.Vi kom fram till att det bästa alternativet för dessa typer av plagg skulle vara att tillföra antibakteriella egenskaper. De kan då beläggas med antingen titandioxid, zinkoxid eller silver då det är väl beprövade ämnen som är bevisade att fungera och ger just dessa egenskaper.Med hjälp av empiriska undersökningar kunde vi ge svar på vad arbetskläder utsätts för under en arbetsdag. Utifrån dessa resultat kunde vi rikta in vår teoretiska referensram på de områden som skulle kunna vara intressanta för att uppnå syftet. Tillslut kom vi fram till att nanoteknik kan bidra till att skapa kläder som bättre står emot yttre påfrestningar och ger bättre hygieniska förhållandeIt is increasingly common for healthcare in Sweden to move out to the residents&apos; homes. They can use homecare to continue living in their own house, but at the same time get the help they need. In 2007 the total of 153 723 people were in use of these services across Sweden.The garments that the staff is wearing get exposed to many different types of external shocks on home visits. Spread of infection in health care is primarily through the staff&apos;s hands and clothes.Nanotechnology is an emerging technology that has been booming in many areas over the past decade. Research is underway involving nanotechnology to improve properties or to create functional fabrics that can have antibacterial properties, easy to clean, water- and stain resistant and odor-free. The aim is to investigate whether nanotechnology can be used in the textile material in assisted living to better withstand external shocks. Today there are many problems in the field of workwear and hygiene, we therefore wish to consider whether this technology can be one of the solutions. Nanotechnology for textiles has two directions. On one striving primarily for the use of nanosize to create nanostructures during the manufacturing process, while the other is focused on finishing processes. The report focuses on the coating method and the self-cleaning and antibacterial properties that can be created in a material.We concluded that the best thing for these types of garments would be that they had antibacterial properties. They are then coated with either titaniumdioxide, zincoxide or silver when it is proven substances which are proven to work and provide these same qualities. With help from our empirical studies, we could provide answers to what the clothes get exposed to during a day of work. Based on these results, we could focus our theoretical framework in the areas that could be relevant to the objectives. Eventually, we concluded that nanotechnology could help to create cloths that better withstand external shocks and improves the hygienic conditions.<br>Program: Textil produktutveckling med entreprenörs- och affärsinriktning
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Boskovitz, Agnes, and abvi@webone com au. "Data Editing and Logic: The covering set method from the perspective of logic." The Australian National University. Research School of Information Sciences and Engineering, 2008. http://thesis.anu.edu.au./public/adt-ANU20080314.163155.

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Errors in collections of data can cause significant problems when those data are used. Therefore the owners of data find themselves spending much time on data cleaning. This thesis is a theoretical work about one part of the broad subject of data cleaning - to be called the covering set method. More specifically, the covering set method deals with data records that have been assessed by the use of edits, which are rules that the data records are supposed to obey. The problem solved by the covering set method is the error localisation problem, which is the problem of determining the erroneous fields within data records that fail the edits. In this thesis I analyse the covering set method from the perspective of propositional logic. I demonstrate that the covering set method has strong parallels with well-known parts of propositional logic. The first aspect of the covering set method that I analyse is the edit generation function, which is the main function used in the covering set method. I demonstrate that the edit generation function can be formalised as a logical deduction function in propositional logic. I also demonstrate that the best-known edit generation function, written here as FH (standing for Fellegi-Holt), is essentially the same as propositional resolution deduction. Since there are many automated implementations of propositional resolution, the equivalence of FH with propositional resolution gives some hope that the covering set method might be implementable with automated logic tools. However, before any implementation, the other main aspect of the covering set method must also be formalised in terms of logic. This other aspect, to be called covering set correctibility, is the property that must be obeyed by the edit generation function if the covering set method is to successfully solve the error localisation problem. In this thesis I demonstrate that covering set correctibility is a strengthening of the well-known logical properties of soundness and refutation completeness. What is more, the proofs of the covering set correctibility of FH and of the soundness / completeness of resolution deduction have strong parallels: while the proof of soundness / completeness depends on the reduction property for counter-examples, the proof of covering set correctibility depends on the related lifting property. In this thesis I also use the lifting property to prove the covering set correctibility of the function defined by the Field Code Forest Algorithm. In so doing, I prove that the Field Code Forest Algorithm, whose correctness has been questioned, is indeed correct. The results about edit generation functions and covering set correctibility apply to both categorical edits (edits about discrete data) and arithmetic edits (edits expressible as linear inequalities). Thus this thesis gives the beginnings of a theoretical logical framework for error localisation, which might give new insights to the problem. In addition, the new insights will help develop new tools using automated logic tools. What is more, the strong parallels between the covering set method and aspects of logic are of aesthetic appeal.
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Kubátová, Veronika. "Domov jako místo rituálů / Nevstupovat prosím! / Zóna domova." Master's thesis, Vysoké učení technické v Brně. Fakulta výtvarných umění, 2019. http://www.nusl.cz/ntk/nusl-396093.

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I have been dealing with the themes of prefabricated houses and housing estates until recently. I was especially interested in their aesthetics. Order, grid and certain regularity and repeatability. At the same time, I was always interested in his social connotations, mainly because I live in these places. Gradually I became more interested in topics related to my own home. So I moved from the general themes to my own experience. But what is my home? Home is a place of utmost importance in our society. Home is made up of people, family. People have it associated with many rituals that accompany their lives often without actually being considered for them. Thanks to these rituals, we manage, among other things, the everyday influx of positive and negative influences of the surroundings and deal with them in various ways. Morning coffee, brushing your teeth, lighting a candle, wiping dust, filling a bath, scattering water on flowers, etc. Balance is the key to everything we do. And I would like to analyze, document and process these home and personal rituals in this work. The final thesis will consist of a free series of paintings with possible interventions and overlaps into video or installation, etc.
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Arnold, Amanda Suzanne. "Shift." Digital Archive @ GSU, 2007. http://digitalarchive.gsu.edu/english_theses/26.

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The following is a collection of original poetry. The manuscript consists of an introduction explaining influences and style, and four chapters of poems categorized by subject matter: object/nature, writing/creativity, relationships, and family/figures. INDEX WORDS: Poetry, Poem
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Books on the topic "Hole cleaning"

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Tanner, Gill. Cleaning. Black, 1994.

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The cleaning encyclopedia. Dell Pub., 1993.

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Cleaning Our School: Graphs. Shell Education, 2010.

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Rosemary, Haley, ed. Haley's cleaning hints: A compilation. 3H Productions, 2000.

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Salt, lemons, vinegar, and baking soda: Hundreds of earth-friendly houshold projects, solutions, and formulas. Metro Books, 2009.

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Shitov, Viktor. Technology cleaning houses and apartments. INFRA-M Academic Publishing LLC., 2020. http://dx.doi.org/10.12737/1023167.

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The textbook describes the types and content of the work of cleaning and maintaining order of premises, care of furniture, care of household items and everyday life, technology and modern means of cleaning, household chemicals, equipment for cleaning of premises. In detail we considered six practical work and independent work in studying the discipline of MDK.01.02 "Technology of homemaking".&#x0D; Can be used in the development of the discipline "Technology of homemaking" module PM.01 "Management of housekeeping" for specialty 43.02.08 "home Services and utilities".&#x0D; For students of institutions of secondary professional education.
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1969-, Formichelli Linda, ed. The complete idiot's guide to cleaning. Alpha Books, 2005.

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Findley, Mary. The Complete Idiot's Guide to Cleaning. Penguin USA, Inc., 2009.

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Findley, Mary. The complete idiot's guide to cleaning. Alpha Books, 2007.

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Cleaning & Stain Removal for Dummies. For Dummies, 2004.

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Book chapters on the topic "Hole cleaning"

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Park, Jae Yong, Jong Kook Song, Han Mil Kim, et al. "A Study of a Single-Wafer Process in Metal Contact Hole Cleaning." In Solid State Phenomena. Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-46-9.177.

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Langelier, Valérie, Derek Santangelo, René Provost, Stéphane Caron, and Philippe Noreau. "The Steps to Optimize and Implement an Anode Stub Hole Cleaning Machine Modification." In The Minerals, Metals & Materials Series. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-65396-5_128.

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Boskovitz, Agnes, Rajeev Goré, and Markus Hegland. "A Logical Formalisation of the Fellegi-Holt Method of Data Cleaning." In Advances in Intelligent Data Analysis V. Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-45231-7_51.

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Chen, Yongfu, Chunlei Qu, Qifu Wang, Zhiyong Jin, Mengzhu Shen, and Jiaqi Shen. "TVSLAM: An Efficient Topological-Vector Based SLAM Algorithm for Home Cleaning Robots." In Intelligent Robotics and Applications. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-65298-6_16.

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Körükcü, Öznur, and Kamile Kabukcuoğlu. "Health Promotion Among Home-Dwelling Elderly Individuals in Turkey." In Health Promotion in Health Care – Vital Theories and Research. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-63135-2_22.

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AbstractAlthough the social structure of Turkish society has changed from a broad family order to a nuclear family, family relations still hold an important place, where traditional elements dominate. Still, elderly people are cared for by their family in their home environment. Thus, the role of family members is crucial in taking care of elderly individuals. In Turkey, the responsibility of care is largely on women; the elderly’s wife, daughter, or daughter-in-law most often provides the care. Family members who provide care need support so that they can maintain their physical, psychological and mental health. At this point, Antonovsky’s salutogenic health model represents a positive and holistic approach to support individual’s health and coping. The salutogenic understanding of health emphasizes both physical, psychological, social, spiritual and cultural resources which can be utilized not only to avoid illness, but to promote health.With the rapidly increasing ageing population globally, health expenditures and the need for care are increasing accordingly. This increase reveals the importance of health-promoting practices in elderly care, which are important for the well-being and quality of life of older individuals and their families, as well as cost effectiveness. In Turkey, the emphasis on health-promoting practices is mostly focused in home-care services including examination, treatment, nursing care, medical care, medical equipment and device services, psychological support, physiotherapy, follow-up, rehabilitation services, housework (laundry, shopping, cleaning, food), personal care (dressing, bathroom, and personal hygiene help), 24-h emergency service, transportation, financial advice and training services within the scope of the social state policy for the elderly 65 years and older, whereas medical management of diseases serves elderly over the age of 85. In the Turkish health care system, salutogenesis can be used in principle for two aims: to guide health-promotion interventions in health care practice, and to (re)orient health care practice and research. The salutogenic orientation encompasses all elderly people independently of their position on the ease-/dis-ease continuum. This chapter presents health-promotion practices in the care of elderly home-dwelling people living in Turkey.
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Ducrey, M., and J. Toth. "Effect of cleaning and thinning on height growth and girth increment in holm oak coppices (Quercus ilex L.)." In Quercus ilex L. ecosystems: function, dynamics and management. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-017-2836-2_38.

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Ramsey, Mark S. "Hole Cleaning." In Practical Wellbore Hydraulics and Hole Cleaning. Elsevier, 2019. http://dx.doi.org/10.1016/b978-0-12-817088-5.00003-4.

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"(bore)hole cleaning air." In Dictionary Geotechnical Engineering/Wörterbuch GeoTechnik. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-41714-6_22562.

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Cheng, Peng. "Optimizing method of hole cleaning." In Advances in Energy Equipment Science and Engineering. CRC Press, 2015. http://dx.doi.org/10.1201/b19126-434.

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Ramsey, Mark S. "Introduction." In Practical Wellbore Hydraulics and Hole Cleaning. Elsevier, 2019. http://dx.doi.org/10.1016/b978-0-12-817088-5.00001-0.

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Conference papers on the topic "Hole cleaning"

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Nwagu, Chike, Toyin Awobadejo, and Keith Gaskin. "Application of Mechanical Cleaning Device: Hole Cleaning Tubulars, To Improve Hole Cleaning." In SPE Nigeria Annual International Conference and Exhibition. Society of Petroleum Engineers, 2014. http://dx.doi.org/10.2118/172403-ms.

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Ahmed, Ramadan Mohammed, and Nicholas E. Takach. "Fiber Sweeps for Hole Cleaning." In SPE/ICoTA Coiled Tubing and Well Intervention Conference and Exhibition. Society of Petroleum Engineers, 2008. http://dx.doi.org/10.2118/113746-ms.

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O'Brien, T. B., and M. Dobson. "Hole Cleaning: Some Field Results." In SPE/IADC Drilling Conference. Society of Petroleum Engineers, 1985. http://dx.doi.org/10.2118/13442-ms.

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Hemphill, Terry, and Tom Pogue. "Field Applications of ERD Hole Cleaning Modeling." In SPE/IADC Drilling Conference. Society of Petroleum Engineers, 1997. http://dx.doi.org/10.2118/37610-ms.

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Iyoho, A. W., J. M. Horeth, and R. L. Veenkant. "A Computer Model for Hole-Cleaning Analysis." In SPE Annual Technical Conference and Exhibition. Society of Petroleum Engineers, 1987. http://dx.doi.org/10.2118/16694-ms.

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Lim, Kien Ming, and G. A. Chukwu. "Bit Hydraulics Analysis for Efficient Hole Cleaning." In SPE Western Regional Meeting. Society of Petroleum Engineers, 1996. http://dx.doi.org/10.2118/35667-ms.

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Cheung, Erik, Nicholas Takach, Evren Ozbayoglu, Reza Majidi, and James Benjamin Bloys. "Improvement of Hole Cleaning Through Fiber Sweeps." In SPE Deepwater Drilling and Completions Conference. Society of Petroleum Engineers, 2012. http://dx.doi.org/10.2118/154759-ms.

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Guild, G. J., I. M. Wallace, and M. J. Wassenborg. "Hole Cleaning Program for Extended Reach Wells." In SPE/IADC Drilling Conference. Society of Petroleum Engineers, 1995. http://dx.doi.org/10.2118/29381-ms.

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Rasi, Marco. "Hole Cleaning in Large, High-Angle Wellbores." In IADC/SPE Drilling Conference. Society of Petroleum Engineers, 1994. http://dx.doi.org/10.2118/27464-ms.

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Berg, Erik, Stian Sedberg, Havard Kaarigstad, Tor Henry Omland, and Kare Svanes. "Displacement of Drilling Fluids and Cased-Hole Cleaning: What Is Sufficient Cleaning?" In IADC/SPE Drilling Conference. Society of Petroleum Engineers, 2006. http://dx.doi.org/10.2118/99104-ms.

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