Academic literature on the topic 'Canal'

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Journal articles on the topic "Canal"

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Kim, D.-K., D.-R. Kim, S. H. Jeong, G. J. Kim, K.-H. Chang, and B.-C. Jun. "Analysis of the coplanarity of functional pairs of semicircular canals using three-dimensional images reconstructed from temporal bone magnetic resonance imaging." Journal of Laryngology & Otology 129, no. 5 (March 3, 2015): 430–34. http://dx.doi.org/10.1017/s0022215115000201.

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AbstractObjectives:This study was conducted to investigate the angles and orientation of semicircular canals, and the coplanarity of functional canal pairs.Methods:Fluid signals in semicircular canals were reconstructed with three-dimensional reconstruction software using 20 temporal bone magnetic resonance images of normal subjects. The angles between each pair of semicircular canals were measured.Results:The mean angles between the anterior and horizontal semicircular canal plane, the horizontal and posterior semicircular canal plane, and the anterior and posterior semicircular canal plane were 83.7°, 82.5° and 88.4°, respectively. Pairs of contralateral synergistic canal planes were formed 15.1° between the right and left horizontal semicircular canal planes, 21.2° between the right anterior and left posterior semicircular canal, and 21.7° between the left anterior and right posterior semicircular canal.Conclusion:Each semicircular canal makes an almost right angle with other canals, but synergistically acting functional canal pairs of both ears do not lie in exactly the same plane.
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Tartuk, GA, and S. Kaya. "Incidence of Missed Middle Mesial Canal in Endodontically treated Mandibular Molar Teeth: A Cone-Beam Computed Tomography Study." Nigerian Journal of Clinical Practice 26, no. 6 (June 2023): 756–59. http://dx.doi.org/10.4103/njcp.njcp_743_22.

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ABSTRACT Background: In endodontic treatment, the aim is to completely determine, shape, and fill all root canals in a three-dimensional way. Missed canals lead to treatment failure. In mandibular molars, there may be an extra canal called the middle mesial canal between the mesiobuccal and mesiolingual canals. Aim: The aim of this study was to evaluate the prevalence of missed middle mesial canals in root canal-treated mandibular molar teeth. Materials and Methods: In this study, cone-beam computed tomography (CBCT) images of 1054 patients were analyzed. We identified 121 endodontically treated mandibular molars and evaluated the prevalence of missed canals. Results: Although 33.05% of the root canal-treated teeth did not have a middle mesial canal, this canal was detected in the other 66.94%; 97.53% of teeth with a middle mesial canal could not be detected by clinicians. Conclusion: Clinicians performing endodontic treatment of mandibular molar teeth should not ignore the presence of the middle mesial canal. Thus, it is very important for clinicians to have sufficient information about the localization, morphology, and variations of the middle mesial canal.
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Shafqat, Amira, Bader Munir, and Mustafa Sajid. "MAXILLARY SECOND MOLAR." Professional Medical Journal 25, no. 07 (July 10, 2018): 981–86. http://dx.doi.org/10.29309/tpmj/2018.25.07.103.

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Introduction: It is important for a dental practitioner to have a clear understandingof the root canal morphology and its variations to perform successful root canal treatment.The inability to identify and adequately treat all canals of root canal system may contribute tothe failure of root canal treatment. Objectives: Clinically determine the frequency or numbersof root canals per tooth in the maxillary second molar teeth in the local population. Setting:Department of Operative Dentistry in Punjab Dental Hospital / de`Montmorency College ofDentistry, Lahore. Study Design: Randomized Control Trial. Study Period: 25th May 2013 to24th November 2013 (6 months). Results: This was a Cross sectional survey of 80 patients withsymptomatic irreversible pulpitis in maxillary second molar teeth in patients undergoing rootcanal treatment. The results showed that five (6.25%) patients had single root canal, seventeen(21.25%) patients had 2 root canals, forty (50%) patients had 3 root canals, seventeen (21.25%)patients had 4 root canals and one (1.25 %) patient had 5 root canals per tooth. In patientwith five canals, single root canal was present in distobuccal and palatal root each while threeroot canals were present in mesiobuccal root as MB-1, MB-2 and MB-3 canal. Conclusion:Local population have a lot of variations in root canal anatomy in second molar. So preclinicalknowledge can increase the success rate of root canal treatment.
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Çoban Kanyılmaz, Ata Nisa, Özlem Okumuş, and Hakkı Sunay. "Assessment of root canal anatomy of mandibular incisors using cone-beam computed tomography in a Turkish subpopulation." International Dental Research 11, no. 1 (April 30, 2021): 46–53. http://dx.doi.org/10.5577/intdentres.2021.vol11.no1.8.

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Aim: The achievement of root canal treatment is influenced by the status of the root canals. The aim of this study was to investigate the frequency of second root canals in mandibular incisors and the prevalence of root canal separation in the cervical, middle and apical thirds of cases with 2 root canals. Methodology: Retrospective cone-beam computed tomography (CBCT) datas of 500 patients seen between 2016 and 2018 were evaluated. A total of 300 patients, 134 males and 166 females, aged 13-71 years (mean age 39.34±13.44) were included in this study. A total of 587 central mandibular incisors and 582 lateral mandibular incisors were examined. The number of roots and root canal morphology based on the Vertucci’s classification were analyzed. The effect of gender on the prevalence of root canal anatomy was also evaluated. Results: The occurence of more than 1 root canal in mandibular lateral and mandibular central was 41.2% and 40.4% respectively and all teeth had a single root. Type I (59.2%) was the most common type, followed by Type III (31.4%), Type II (5.8%), Type VII (2.1 %), Type VI (0.8%) and Type V (0.7%). Type IV and Type VIII were not observed. The root canal separation in two root canaI of central and lateral mandibular incisors was found in the middle third of the root in 65.4% and 74.6%, respectively. The incidence of Type III in males (39%) was higher than that of females (25.4%), while the incidences of Type I in females (67.7%) were significantly higher than that of males (48.3%). The prevalence of second canals in mandibular incisors were detected more frequently in men than in women. Conclusion: The prevalence of second canal in total mandibular incisors is 40.8% (Type III was observed the most frequently). CBCT is an appropriate method for identifying of canal morphologies of mandibular incisors. How to cite this article: Çoban Kanyılmaz AN, Okumuş Ö, Sunay H. Assessment of root canal anatomy of mandibular incisors using cone-beam computed tomography in a Turkish subpopulation. Int Dent Res 2021;11(1):46-53. https://doi.org/10.5577/intdentres.2021.vol11.no1.8 Linguistic Revision: The English in this manuscript has been checked by at least two professional editors, both native speakers of English.
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Madakwade, Sangham Dinkar, Chetana Sachin Makade, and Pratima Ramkrishana Shenoi. "Ambiguity of lateral canals." Journal of Advances in Dental Practice and Research 1 (June 30, 2022): 24–26. http://dx.doi.org/10.25259/jadpr_12_2022.

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For successful endodontic therapy, clinicians must have a thorough understanding of the complexities present in the root canal system such as accessory canals, lateral canals, furcal canals, and apical ramifications. It has been reported in the literature that lateral canals and/or apical canals are likely to be associated with pulp disease and canal reinfection. As a result, this emphasizes the importance of infection control not only in the main canal but also throughout the root canal system and its variations. The current article presents with an insight into the clinical aspects of lateral canals.
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Hassam Anjum Mir, Asad-ur-Rahman, Mussab Irfan, Inamullah Jan Khattak, Akhla Nadeem Ahmed, and Fawad Ali Shah. "ROOT CANAL MORPHOLOGY OF MANDIBULAR INCISORS IN PAKISTANI POPULATION USING CBCT." Journal of Khyber College of Dentistry 10, no. 03 (September 30, 2020): 7–10. http://dx.doi.org/10.33279/jkcd.v10i03.201.

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Objective: To find the incidence of two canals, and root canal morphology of mandibular incisors in Pakistani population thus preventing missed canals during endodontic procedures. Materials and Methods: 100 CBCT scans taken in Armed Forces Institute of Dentistry, Rawalpindi, Pakistan were studied to determine the presence of second canal as well as determining the root canal morphology according to Vertucci’s classification, in mandibular incisors. The data was analyzed using SPSS 20.0. Results: Images of 400 mandibular incisors were observed. 73.8% of the incisors had one canal (Vertucci’s Type I) and 26.2% had two canals (Vertucci’s Type II 4%, Type III 20.4% and Type IV 1.7%). Conclusion: Overall, 26.2% incisors had two canals, so the dentists performing root canal treatment of mandibular incisors must be aware of this fact to avoid missed canal. CBCT can be used successfully to determine root canal configurations.
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Kyaw Moe, M. M., H. J. Jo, J. H. Ha, and S. K. Kim. "Root Canal Configuration of Burmese (Myanmar) Maxillary First Molar: A Micro-Computed Tomography Study." International Journal of Dentistry 2021 (November 30, 2021): 1–8. http://dx.doi.org/10.1155/2021/3433343.

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Aim. To investigate the root canal anatomy of Burmese (Myanmar) permanent maxillary first molar (BMFM) with micro-computed tomography. Methodology. One hundred and one extracted BMFMs were scanned by a SkyScan 1272 scanner (Bruker microCT, Belgium) and reconstructed with NRecon software (Bruker microCT). CTAn software (Bruker microCT) was used to create 3D models of root and internal canal anatomy, while CTVol software (Bruker microCT) was used to visualize 3D models. In each root, Vertucci’s canal types, incidence and location of the lateral canal, incidence, location, and type of isthmus, and number and position of foramina were examined. Results. In 101 specimens, 83 (82.18%) mesiobuccal roots had multiple canals. The most common canal type is type IV (45.5%), followed by type II (17.8%) and I (17.8%) canals. Type III, V, VI, VII, and VIII canals are less than 10% in total. Seven additional canal types were seen for 10% in total. Fourteen (13.86%) distobuccal roots had multiple canals, and the predominant canal type is type I (86.1%), followed by type II (5.9%) and V (4%) canals. Three additional canal types were observed for 4% in total. All palatal roots possessed the simplest type I canal. Apical ramification occurred in 69 mesiobuccal roots (68.3%), 36 distobuccal roots (35.6%), and 37 palatal roots (36.6%). A total of 240 lateral canals were observed in 101 specimens. Each specimen had 2.38 ± 2.22 lateral canals on average. The highest incidence, 136 (56.67%) lateral canals, occurred in the mesiobuccal root, followed by 57 (23.75%) and 47 (19.58%) lateral canals from the distobuccal root and the palatal root, respectively. Each specimen had 6.17 ± 2.42 foramina. Mesiobuccal root had the highest incidence of apical foramina compared to other roots. Seventy-two mesiobuccal roots (71.29%) had isthmus, while only 7 distobuccal roots (6.93%) had isthmus somewhere along the root. Conclusions. The root canal anatomy of BMFM was quite complex, especially in the mesiobuccal root. The predominant canal type was Vertucci type IV in the mesiobuccal root and type I in the distobuccal and palatal roots. In addition, this micro-computed tomography study disclosed complemented canal types and a higher prevalence of lateral canal than the previous studies.
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Shrestha, Sushmita, Navin Agrawal, Mannu Vikram, Vimmi Singh, Ashok Ayer, and Arbind Rai. "C shaped canal: Variation and Recommendations." Journal of College of Medical Sciences-Nepal 14, no. 1 (March 30, 2018): 62–64. http://dx.doi.org/10.3126/jcmsn.v14i1.19125.

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Root canal morphology is not uniform, variations of root canals are routinely encountered by endodontists making the root canal treatment more challenging. C shaped canal is a variation commonly encountered in mandibular second molars. The main identifying feature of such canals is presence of fins or webs interconnecting with the main canals. Such canal systems require meticulous mechanical and rigorous chemical preparation to ensure desired outcome of the treatment. Proper assessment of tooth morphology, preoperative radiograph along with consideration towards racial predilection will greatly help in accurate identification of such canals pre-operatively. This paper reports a case of C shaped canal in mandibular second molar diagnosed and treated taking all the precautions and adapting necessary modifications in the steps of conventional root canal treatment steps where required thus increasing the likelihood of success.
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Shrestha, Sandhya, Manish Raj Sapkota, Ankit Shah, Santosh Rajbhandari, and Pratyush Sapkota. "Occurrence of Second Mesio-buccal Canal in Maxillary First Permanent Molar: A CBCT Study." Orthodontic Journal of Nepal 7, no. 1 (June 30, 2017): 39–43. http://dx.doi.org/10.3126/ojn.v7i1.18901.

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Introduction: Complexity in root canal morphology leads to chances of failure in endodontic treatment due to missed canal. Availability of Cone-beam Computed Tomography (CBCT) has contributed to assess second mesiobuccal canals in maxillary first molars.Objective: To study the presence of second mesiobuccal (MB2) canals, classify morphology of canals according to Vertucci’s classification and to measure the distance between MB1 and MB2 canals.Materials & Method: 72 CBCT scans including 115 permanent maxillary first molars were evaluated by endodontist and oral radiologist separately using Dicom software to study the mesiobuccal root canal morphology. Oral radiologist and endodontist individually evaluated the scans through coronal, axial and oblique views to study canal configurations. Vertucci’s Classification was used to classify the canal configurations. Statistical tests were done to assess the gender variation and arch side difference.Result: Among 115 images evaluated; 30.4% samples had second mesiobuccal canal. The most common canal configuration was Type I (60.9 %) in mesiobuccal root. The mean distance between MB1 and MB2 canals was 2.39 mm in female and 2.56 mm in male.Conclusion: The occurrence of second canal in mesiobuccal root of maxillary permanent molar is considerable in Nepali patients. CBCT can be an effective tool to detect MB2 canal and other complexities of root canal system to achieve clinical success
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Joshi, Neera, Suraj Shrestha, Kranti Prajapati, Sharada Devi Wagle, Rinky Nyachhyon, and Sunanda Sundas. "PRESENCE OF EXTRA CANAL IN PERMANENT MANDIBULAR FIRST MOLAR." Journal of Chitwan Medical College 12, no. 4 (December 31, 2022): 8–11. http://dx.doi.org/10.54530/jcmc.1206.

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Background: The success of root canal therapy depends on proper knowledge of root canal system, presence of extra canals, complete debridement and three-dimensional obturation of the entire root canal system. Previous studies have reported three to five canals in mandibular first molars. There might be chance of missing the canal that may lead to root canal failure, because of the variability in the number of root canals. The objective of this study was to determine the percentage of extra canal in the permanent mandibular first molar in patients undergoing root canal treatment. Methods: This cross-sectional study was conducted in the Department of Conservative Dentistry and Endodontics of Peoples Dental College and Hospital over a period of ten months from 6th September 2021 to 31st July 2022 after receiving ethical clearance from Institutional review Committee (IRC) Peoples dental college on 5th September 2021 (ref no1/ch no 5,2078/2079). About 350 mandibular first molar was selected by convenient sampling. After access preparation, all canal orifices were located and data were recorded. Data were analyzed using Statistical Package for the Social Sciences (SPSS) version 22.0 with frequency table. Results: Out of 350 patients, the percentage of three canals, four canals and five canals were respectively 273(78%), 76(21.7%) and 1(0.3%). Conclusions: The finding of this study supports the presence of extra canals in mandibular first molar. Thus, the clinicians require more diagnostic approaches, access modifications, and skills to locate, clean and shape the entire root canal system.
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Dissertations / Theses on the topic "Canal"

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Campbell, Andrew John. "The politics of canal construction : the Ashby Canal, 1781-1804." Thesis, University of Leicester, 2012. http://hdl.handle.net/2381/27794.

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Between 1781-1804 the residents of a number of parishes in Derbyshire, Leicestershire and Warwickshire found themselves on the receiving end of the promotion and construction of the Ashby Canal. As with most new developments, especially those that have an impact on the landscape, the local inhabitants had to decide whether they supported or opposed it, while outsiders had to consider what gains could be made from any involvement in the project. In this instance those in favour of the waterway won the day and the building process began in 1794. However, this was by no means an end to the negotiations as the canal company had to deal with continual internal disagreements and disputes with landowners over various issues such as damage, route changes and late payments for their land. Using sources which include contemporary newspapers, canal company records, a Parliamentary Act, and the diary of a local constable this thesis provides a micro-study of the complex politics of canal construction. It examines the considerations affecting participation in the process, the numbers of people who were involved, the workings and internal structures of the canal company and the exchanges of opinions within the organisation and between its supporters and opponents. Its findings reveal that the Ashby Canal had a significant and variable effect not only on the residents of the parishes the canal cut through, but also on people who were considered outsiders, such as non-local investors, Members of Parliament and the engineers, contractors and labourers who relocated to gain employment.
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Maurin, Bruno. "Pharmacologie du canal CFTR : développement de molécules activatrices du canal." Thesis, Grenoble, 2012. http://www.theses.fr/2012GRENV085.

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PHARMACOLOGIE DU CANAL CFTR : SYNTHESE DE NOUVEAUX COMPOSES ACTIVATEURS DE L'EFFLUX DES IONS CHLORURE.Après la découverte dans notre laboratoire d'une nouvelle réaction entre le méthylglyoxal et les α-aminoazahétérocycles aromatiques, une nouvelle famille de modulateurs de l'activité de la protéine CFTR (« Cystic Fibrosis Transmembrane conductance Regulator ») a été mise en évidence en collaboration avec l'équipe de F. Becq à Poitiers. Les dysfonctionnements de cette protéine transmembranaire résultent de différentes mutations du gène correspondant et sont responsables de plusieurs pathologies dont la mucoviscidose. Les perspectives thérapeutiques de cette maladie grave impliquent l'utilisation et la recherche d'activateurs du canal CFTR.En nous basant sur la structure des composés ayant présenté les meilleurs effets activateurs de la protéine, nous avons conçu et synthétisé une série d'analogues du composé activateur le meilleur mis en évidence précédemment, GPact-11a. Les nouveaux composés préparés sont issus des réactions du méthylglyoxal ou de nouvelles voies de synthèse utilisant des acides aminés. La réactivité de GPact-11a a ensuite été étudiée et exploitée pour préparer des prodrogues potentielles et réaliser la séparation des quatre énantiomères formés lors de la préparation de GPact-11a. Un travail de modélisation des interactions des modulateurs synthétisés avec un modèle de la protéine CFTR construit par homologie de séquences par I. Callebaut, J.-P. Mornon et P. Lehn a également été développé afin de concevoir rationnellement de nouveaux activateurs et de comprendre les effets observés
PHARMACOLOGY OF CFTR CHANNEL: SYNTHESIS OF NEW ACTIVATORS OF CHLORIDE ION EFFLUX.After the discovery in our laboratory of a new reaction of methylglyoxal with α-aromatic aminoazaheterocycles, a novel family of CFTR modulators (“Cystic Fibrosis Transmembrane conductance Regulator”) has been identified in collaboration with the group of F. Becq in Poitiers. The dysfunctions of this transmembranar protein that result from different genetic mutations lead to several pathologies and among them to the genetic disease Cystic Fibrosis. In the search for more efficient CFTR activators from the structure of the best activator GPact-11a identified previously, a series of GPact-11a analogues was designed and synthesised through reaction of adenine derivatives with methylglyoxal or amino acids. The GPact-11a reactivity was also studied and used for the preparation of potential prodrugs and for the separation of the four enantiomers formed in the reaction leading to GPact-11a. Works were also developed to model the interactions between the synthesised derivatives and a CFTR model built through sequence by I. Callebaut, J.-P. Mornon and P. Lehn in order to design more rationally new activators and understand the biological effects
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Madarati, Ahmad A. "Analysis and management of intra-canal fracture of root canal instruments." Thesis, University of Manchester, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509729.

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Martin, Morgan. "Observation du canal canal B⁰s → ηc φ avec le détecteur LHCb." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0244.

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L'interférence entre la désintégration du méson B⁰s vers un état final propre de CP, directement ou via le mélange B⁰s- ̄B⁰s, donne lieu à une phase violant CP mesurable φ_{s}, dont la valeur dans le Modèle Standard est φs^{MS}=(-0.0370 ± 0.0006)rad. Cependant, des contributions de Nouvelle Physique peuvent intervenir dans ce processus et modifier la valeur de φs. À l'heure actuelle, la mesure la plus précise de φs est donnée par l'expérience LHCb et la valeur moyenne mondiale est φs^{exp}=(-0.021 ± 0.032)rad, dominée par l'incertitude statistique. Dans ce contexte, l'étude de la désintégration B⁰s→ηcφ est effectuée en utilisant les données de collisions pp correspondant à une luminosité intégrée de ~3.0fb⁻¹, collectées avec le détecteur LHCb avec le Run~1 du LHC. La première observation de la désintégration B⁰s→ηcφ est obtenue, avec le méson ηc reconstruit dans les quatres modes de désintégration p ̄p, K⁺K⁻π⁺π⁻, π⁺π⁻π⁺π⁻ et K⁺K⁻K⁺K⁻ et φ(1020) reconstruit dans le mode K⁺K⁻. La désintégration B⁰s→J/ψφ est utilisée comme canal de normalisation.Le rapport de branchement mesuré est B(B⁰s→ηcφ)=(5.01 ± 0.53 ± 0.27 ± 0.63) x 10⁻⁴, où la première incertitude est statistique, la seconde est systématique et la troisième incertitude est due à la connaissance limitée des rapports d'embranchement externes
The interference between B⁰s meson decay amplitudes to CP final state directly or via mixing gives rise to a measurable CP-violating phase φs, which is predicted to be φs^{MS}=(-0.0370 ± 0.0006)rad in the Standard Model. However, such process may receive contributions from New Physics and change the value of φs. At present, the most precise measurement of φs is given by the LHCb experiment and the world average is φs^{exp}=(-0.021 ± 0.032)rad, with uncertainty still dominated by the statistics.In this context, a study of B⁰s→ηcφ decays is performed using pp collision data corresponding to an integrated luminosity of ~3.0fb⁻¹, collected with the LHCb detector during the Run~1 of the LHC. The observation of the decay B⁰s→ηcφ is reported, where the ηc meson is reconstructed in the p ̄p, K⁺K⁻π⁺π⁻, π⁺π⁻π⁺π⁻ and K⁺K⁻K⁺K⁻ decay modes and the φ(1020) in the K⁺K⁻ decay mode. The decay B⁰s→J/ψφ is used as a normalisation channel.The measured branching fraction is B(B⁰s→ηcφ)=(5.01 ± 0.53 ± 0.27 ± 0.63) x 10⁻⁴, where the first uncertainty is statistical, the second systematic and the third uncertainty is due to the limited knowledge of the external branching fractions
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Jackoby, Joanna C. "Panama: owning the canal." Thesis, Monterey, California: Naval Postgraduate School, 2014. http://hdl.handle.net/10945/41395.

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Approved for public release; distribution is unlimited.
It is rare that Americans wonder about what happened to the Panama Canal after the United States turned it over to Panama in 1999. Since 2000, the Panamanians have been able to transform the canal into a profitable enterprise and successfully revert a good deal of Canal Zone infrastructure to public use through a combination of positive political decision-making, fiscally beneficial economic policies, and constructive management. The United States created the nation of Panama, built and managed the canal, and finally begrudgingly handed over sovereignty. To this extent, Panama's success is our success. Yet there has been surprising little real analysis of the changes in Panama that have resulted from a decade of ownership of the canal and the land surrounding it. It is time to appraise the results so far.
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Gomes, Miguel Ferreira Pereira. "Canal SCADA na Web." Master's thesis, Universidade do Porto. Reitoria, 2002. http://hdl.handle.net/10216/10358.

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Sohraby, Sarah. "Le canal sodium épithélial." Doctoral thesis, Universite Libre de Bruxelles, 1988. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/213399.

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Gomes, Miguel Ferreira Pereira. "Canal SCADA na Web." Dissertação, Universidade do Porto. Reitoria, 2002. http://hdl.handle.net/10216/10358.

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Carmigniani, Rémi. "Canal redresseur de vagues." Thesis, Paris Est, 2017. http://www.theses.fr/2017PESC1049/document.

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Comment générer des courants à partir des vagues ? En s'inspirant de la nature et particulièrement des pompes à impédance, deux systèmes permettant de pomper avec des vagues sont étudiés : la pompe à résonance et les vagues au dessus d'une plaque submergée. Dans cette étude, l'origine de l'écoulement est reliée au terme de transport de masse des vagues dans la couche de surface. Il correspond à la quantité de masse déplacée par les vagues entre la crête et le creux au cours d'une période. Ce terme peut-être amplifié par des changements de bathymétrie et par résonance. Cela permet de créer des zones d'aspiration et donc de générer un courant. Le problème est modélisé par une simple description linéaire potentielle. Un modèle avec dissipation est aussi présenté afin de prendre en compte les effets de dissipation dus au déferlement et au frottement visqueux. Le modèle est comparé à des expériences et des simulations. Il permet de prédire les fréquences intéressantes et la dynamique globale. Ceci permet de comprendre l'origine d'un phénomène de pompage par vague, mais aussi de dimensionner le système à partir d'une théorie simple
How to generate currents from water waves? Inspired by nature original way of pumping in the embryonic heart, two wave pumps are studied in the present thesis: the resonance wave pump directly inspired by the Liebau's pump and the waves above a submerged plate pump. The origin of the observed circulation is linked to the wave mass transport term: it corresponds to the amount of mass advected by the waves in the surface layer. The latter is the domain between the crest and the trough of the waves and is a part of the flow that is not always submerged. It is possible to amplify this surface term by resonance and by varying the bathymetry. The latter enables to generate local suction toward the surface layer and leads to mean circulation. The problem is described using a simple potential theory and a dissipative model is proposed to take into account wave dissipation due to friction and wave breaking. The simplified model is compared to experiments and simulations in both cases. It provides a simple framework to predict the pumps behavior: the interesting frequency range and the strength of the flow. It is also a tool for the design of real life applications
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Waltham, Nathan John. "Fish in Artificial Urban Waterways: Ecology, Feeding and Contamination." Thesis, Griffith University, 2009. http://hdl.handle.net/10072/365979.

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To maximise opportunities for coastal land with waterfrontage, property developers have claimed natural wetlands (saltmarsh, mangroves) for construction of artificial urban waterway developments in many places. These created habitats differ from nearby shallow estuarine habitats; they lack the macrophytes common in natural estuaries, they receive untreated urban stormwater runoff, and typically comprise a highly ramified network of narrow and deep channels. Few studies of these habitats exist and there is no clear understanding of their ecological value and role as coastal fish habitat. Managers are therefore faced with the challenge of managing existing systems, and of selecting coastal wetland habitats for protection from new waterway developments. Artificial urban waterways are an obvious feature of the coastal landscape in southeast Queensland, Australia. Because of the extensive network of these systems, many suffer hydraulic problems, and in response, legislation forced property developers to shift waterway design to estuarine lakes with restricted tidal exchange. This hydraulic restriction seemed to solve increases to the tidal compartment imposed with further artificial urban housing waterway developments, however, no consideration has been given to connectivity with downstream waterways for fish. My research demonstrates that these lakes, like open flow through canals, support many of the same fish species of economic importance that occur in natural wetlands and that there is no apparent trapping of fish in lakes. Salinity is lower in lakes because of their tidal restrictions, and while this is only weakly correlated with fish abundance, even in massive lake developments (280 ha surface area), it is the environmental factor that best explains fish assemblages. Recruitment of young fish is also influenced by lake design, with their arrival in lakes slightly delayed behind that in open canals. Few studies have tested whether the ecological processes supporting fisheries production in artificial urban waterways are different to those in natural habitat. I used stomach content analysis and stable isotopes (carbon and nitrogen) of snub-nosed garfish (Arrhamphus sclerolepis) to examine their nutrition in artificial and natural wetlands. A. sclerolepis in natural wetlands have enriched carbon isotope values (-13.9‰) because they consume large amounts of seagrass during the day and night, and at night also ingest small quantities of crustacean prey. A. sclerolepis in artificial urban waterways have depleted values (-19.1‰) because they consume macroalgae during the night, and switch in the day to terrestrial insects washed from gardens lining the waterways. This means that fish show remarkable plasticity in the new wetland habitat, retaining the same feeding strategy from natural wetlands of bulk herbivory with the inclusion of smaller amounts of animal prey. It also suggests minimal exchange of fish populations between natural and artificial habitats over the period of weeks to months, Mathematical modelling of the carbon and nitrogen isotope signatures of A. sclerolepis and all feasible source mixtures confirmed that this diet switching is part of a feeding strategy requiring multiple food sources in each habitat.
Thesis (PhD Doctorate)
Doctor of Philosophy (PhD)
Griffith School of Environment
Science, Environment, Engineering and Technology
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Books on the topic "Canal"

1

Maguire, Tim. Canal. London: Chisenhale Gallery, 1992.

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Williams, Deborah. Erie Canal: Exploring New York's great canals. Woodstock, Vt: Countryman Press, 2009.

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Williams, Deborah. Erie Canal: Exploring New York's great canals. Woodstock, Vt: Countryman Press, 2009.

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Greene, Julie. The Canal Builders. New York: Penguin USA, Inc., 2009.

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Company, Welland Canal. Report of the Welland Canal, for 1829. [Toronto?: s.n.], 1987.

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Company, Shubenaccadie Canal, ed. Subscription list for the Shubenaccadie canal. [S.l: s.n., 1986.

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Mann, Elizabeth. The Panama Canal. New York: Mikaya Press, 1998.

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Wajda, Andrzej. Kanał: Canal. S.l.]: Home Vision, 1990.

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Banks, Iain M. Canal dreams. New York: Doubleday, 1991.

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Oliver, Carl R. Panama's Canal. New York: Franklin Watts, 1990.

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Book chapters on the topic "Canal"

1

Davis, Jack. "Canal." In Aesthetic and Reconstructive Otoplasty, 461–93. New York, NY: Springer New York, 1987. http://dx.doi.org/10.1007/978-1-4613-9999-5_20.

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Statman, Alexander. "Canal." In Natural Things in Early Modern Worlds, 86–108. London: Routledge, 2023. http://dx.doi.org/10.4324/9781003351054-6.

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Spanier, Benny. "Freedom of Navigation in the Suez Canal and the Channels: Law of the Sea." In Palgrave Studies in Maritime Politics and Security, 117–33. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-15670-0_6.

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AbstractThe chapter examines the status of international canals and straits connecting Two Parts of the High Seas under the Law of the Sea. Strait is a natural phenomenon, while a canal is artificial. At the same time, having a similar role and designation—a passage between seas—one could assume that their legal status, as far as freedom of navigation is concerned, would be the same. Straits have been extensively and comprehensively dealt with over the years by littoral nations, and today there is a complete and innovative chapter on this subject in the 1982 United Nations Convention on the Law of the Sea. However, the Convention is silent on canals. In the first part of the chapter, the terms “strait” and “canal” will be defined with an emphasis on the Suez Canal with regard to the right to freedom of navigation. The second part will describe the development of the right to freedom of navigation in the Suez Canal and the straits. One can see that while with straits there has been, over the years, a process of development with regard to navigation rights in the Law of the Sea, this is not the case with regard to canals subject to specific conventions, and specifically, the Suez Canal. The third part of the chapter will be devoted to a discussion leading to some conclusions on the differences between the two passages, which will assess whether these differences have future significance in the particular context of the Suez Canal.
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Frank, J. Howard, J. Howard Frank, Michael C. Thomas, Allan A. Yousten, F. William Howard, Robin M. Giblin-davis, John B. Heppner, et al. "Pore Canal." In Encyclopedia of Entomology, 3007. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6359-6_3079.

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Singh, Ranjodh, and Gary J. Lelli. "Zygomaticofacial Canal." In Encyclopedia of Ophthalmology, 1–2. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-642-35951-4_1352-1.

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Singh, Ranjodh, and Gary J. Lelli. "Zygomaticotemporal Canal." In Encyclopedia of Ophthalmology, 1–2. Berlin, Heidelberg: Springer Berlin Heidelberg, 2017. http://dx.doi.org/10.1007/978-3-642-35951-4_1353-1.

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Singh, B. Ranjodh, and Gary Joseph Lelli. "Zygomaticofacial Canal." In Encyclopedia of Ophthalmology, 1951–52. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-540-69000-9_1352.

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Singh, B. Ranjodh, and Gary Joseph Lelli. "Zygomaticotemporal Canal." In Encyclopedia of Ophthalmology, 1953–54. Berlin, Heidelberg: Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-540-69000-9_1353.

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Mehlhorn, Heinz. "Gynecophoric Canal." In Encyclopedia of Parasitology, 1191. Berlin, Heidelberg: Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-43978-4_4982.

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Mehlhorn, Heinz. "Gynecophoric Canal." In Encyclopedia of Parasitology, 1. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-27769-6_4982-1.

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Conference papers on the topic "Canal"

1

Viswanath, Bimal, Mainack Mondal, Krishna P. Gummadi, Alan Mislove, and Ansley Post. "Canal." In the 7th ACM european conference. New York, New York, USA: ACM Press, 2012. http://dx.doi.org/10.1145/2168836.2168867.

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Dong, J., and H. Everett. "The Development of Endodontic Micro Robot." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-41562.

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Endodontic therapy, better known as root canal treatment, is a procedure performed to remove damaged and/or infected tissue from the inner canals of teeth and seal the canals to prevent the teeth from being a source of infection. Each year more than 24 million teeth receive endodontic treatment in the United States. A typical procedure includes access preparation (opening crown with drills), root canal shaping and cleaning, and then root canal filling. This treatment is expensive, time-consuming, and prone to human error. The outcome relies on the clinician’s skill, which is gained through years of training and practice. The success quotient of this treatment is 60–65% for general dentists and 90% for specialists (endodontists). There is a need for advanced endodontic technology innovation. This paper will describe the process of mechanical design of computer-controlled micro machine, which will perform the automatic probing, drilling, cleaning, and filling of the root canal. The paper will also discuss the innovations involved from the traditional way endodonticsts treat root canal to science and technology based automation.
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Dong, Janet, Shane Y. Hong, and Gunnar Hasselgren. "Non Destructive Diagnosis for Minimum Invasive Access Preparation in Endodontic Treatment." In ASME 2002 International Mechanical Engineering Congress and Exposition. ASMEDC, 2002. http://dx.doi.org/10.1115/imece2002-33484.

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Root canal treatment of infected root canals represents a large percentage of business in general dental practice. It is an expensive process and often prone to failure. During root canal treatment, destructive access preparation by removing parts of tooth crown and dentin is usually needed even before a clinician’s inspection and diagnosis. This paper presents a non-destructive method for accessing the internal tooth geometry by building a 3-D tooth model from 2-D radiograph. The geometry of root canals is then formulated into a mathematical model. Based on this mathematical model, the treatment procedures utilizing the dental tools/instruments are planned by a computer aided prescription system, which yields the tool selection and tool path for the root canal preparation by an intelligent micro drilling machine with on-line monitoring. To minimize the removal of healthy tooth crown and dentin, thus protecting the strength of the patient’s infected tooth, an optimization algorithm is utilized for planning the access preparation in the root canal treatment. Although an opening of a tooth crown is still needed so that dental instruments can reach the root canal, the non-destructive 3-D modeling and the optimization of the access preparation in the new approach makes the root canal treatment minimally invasive compared to present techniques.
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Beaupied, Johanne, Maxime Luère, Léon Bérelle, Dominique Boidin, and Rémi Kozyra. "Canal kitchen." In SIGGRAPH '17: Special Interest Group on Computer Graphics and Interactive Techniques Conference. New York, NY, USA: ACM, 2017. http://dx.doi.org/10.1145/3078280.3101045.

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Beaupied, Johanne. "Canal kitchen." In SA '17: SIGGRAPH Asia 2017. New York, NY, USA: ACM, 2017. http://dx.doi.org/10.1145/3145631.3145653.

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Sugahara, Ryo, and Akio Kuroyanagi. "Research on the Trend Toward Public Access to Canals in the Tokyo Waterfront Area." In ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/omae2016-54393.

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In recent years, great regard has been given to the participation of various administrative organizations, NPOs and local residents in coastal zone management. Following the formulation of the “Canal Renaissance Project (Tokyo Metropolitan Gov. Bureau of Port and Harbor, 2005)” as a step towards easing restrictions to vitalize canal spaces in the Tokyo waterfront area, local organizations are developing commercial and recreational uses of canal spaces. In this report, we have conducted field research and hearings with managers and business people in five regions of the Tokyo waterfront where the Canal Renaissance Project is being implemented. Through this research, we have observed the usage conditions of the canal spaces and how multiple organizations cooperate with each other, and attempt to identify problems associated with the use of canal spaces by local organizations. The results show that eased regulations on water area usage permissions have created new opportunities for local businesses, store associations and NPOs to utilize canals. By establishing floating restaurants and floating piers, waterfront areas have been developed with consideration for the spatial structure and surrounding area of canals in each region. We have observed a large variety of interactions between organizations and groups, and the establishment of a system centered on a committee made up of local businesses and residents in each region. However, we have also noted that due to the strong individuality of the projects carried out in each region, they have not lead to any inter-regional cooperation, thus not necessarily successfully utilizing the inherent spatial continuity of the canals. There have also been examples of complication of the committees that connect the local residents involved in the projects and the government. This is an issue in the management and operation of canal usage. From the aforementioned results, it is clear that the projects observed in canal usage under the eased regulations are organized such that they are directly carried out by committees, in a so-called “committee-based model.” There is no “local coordinator” present to handle the tasks of reconciling opinions between project leaders, applying for water area usage permission, maintenance of facilities, acceptance of new participants, and the like.
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Echevarria, Victor. "Engineering Solutions to the Problem of Hypersalinity in Florida Power & Light’s Turkey Point Cooling Canals." In SNAME Maritime Convention. SNAME, 2010. http://dx.doi.org/10.5957/smc-2010-stu01.

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The aim of this project is to investigate engineering methods to reduce salinity in the cooling canals at the Florida Power & Light (FP&L) Turkey Point Power Plant. In order to stop discharging hot water from the plant into the adjacent Biscayne Bay, a cooling canal system was made operational in 1972 that occupies an area 3.2 km wide by 8.0 km long extending south of the plant. The 5,900 acre canal system has been measured at twice the salinity of the adjacent Biscayne Bay at as high as 68 ppt [Appendix i]. Florida Power & Light added a canal along the western perimeter of the cooling canal system to intercept seepage. The interceptor ditch enables FP&L to pump seepage back into the canal system during the dry season thus reducing the groundwater flow of hypersaline water to the west. The Florida Department of Environmental Protection (FDEP) and the South Florida Water Management District (SFWMD) are monitoring a saltwater plume migrating west of FP&L property (FDEP/SFWMD Miami-Dade Saltwater Intrusion Presentation pg 3). Tidal influences have a profound effect on saltwater intrusion, so it is difficult to quantify the influence of the canals on this plume. To ensure that FP&L has no culpability in the contamination of ground water, the cooling canals should either operate at a lower level of salinity or be isolated to restrict flow to underground sources of water. Isolation, however, is not an appealing option as the methods which have been conceptualized are highly invasive. Environmental concerns are abundant as the ecosystem within the cooling canals supports at least 17 protected species of birds and animals of South Florida. Over 25% of the world’s population of the American crocodile resides in the Turkey Point cooling canals. Very few organisms require a hypersaline condition to thrive; therefore, lowering the salt concentration of the canal system is not expected to have adverse effects upon the ecosystem. Careful attention must be paid to ensure wildlife survival during treatment and/or disposal system development and operation.
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Lockhart, Calum, and Edmund Metters. "Ghosts of the Erie Canal Past Present and Future." In Footbridge 2022 (Madrid): Creating Experience. Madrid, Spain: Asociación Española de Ingeniería Estructural, 2022. http://dx.doi.org/10.24904/footbridge2022.249.

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<p>In 1825, amidst the industrial revolution taking place in the United States of America, the Erie Canal was constructed bringing industry and wealth to the communities along with it. Almost 200 years later, the governor of New York announced a 300-million-dollar plan to Reimagine the Canals and bring new economic and social development to those communities along the canal.</p><p>Of the 57 locks and 19 guard gates along the Erie Canal, lock E11, and guard gate 12 are examples that offer the ability to use their heritage value to bring economic value to the areas around them by pairing them with a footbridge, due to their location. These pieces of infrastructure, still performing critical functions to prevent flooding, often fall forgotten and sit in the backdrop. As part of the Reimagine the Canals initiative these historic structures will become a centrepiece, showcasing their heritage value.</p><p>Along the canal network also sit many derelict old road bridges. One in the community of Waterloo on Locust Street has been closed for several years, having been through cycles of rebirth before- we looked at how this bridge could again become the centre of the local community.</p>
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Dong, J., S. Y. Hong, and G. Hasselgren. "Tool Selection and Path Control for Automated Posterior Teeth Coronal Canal Treatment Preparation." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-62519.

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This paper represents a part of research plan of “Advanced Endodontic Technology Development.” In order to aid endodontic treatment a 3-D computer model of root canals has been created which shows the geometrical characteristics. The extent of work needed for root canal treatment is obtained from this 3-D model. The objective of this paper is to convert the geometrical characteristics into automatic treatment procedure planning. This computer-aided process planning for endodontic treatment determines tool selection and process method. It also calculates tool path and optimum tool movement distance. The output of this planning system is a numerical controlled program. Because of paper size limitation, only tool selection and path control during coronal canal treatment preparation for posterior teeth are discussed in the paper. The computer-aided treatment procedure planning system provides transformation from a 3-D canal model to a machine-controlled program that will yield a treated root canal ready for filling. It serves as a bridge between design (3-D canal model) and manufacturing (canal treatment). Unlike conventional methods for root canal treatment, the computer-aided treatment process planning system emphasizes a non-destructive internal tooth geometry examination and less invasive access preparation.
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Dong, J., S. Y. Hong, and G. Hasselgren. "Tool Selection and Path Control for Automated Anterior Teeth Coronal Canal Treatment Preparation." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80473.

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This paper represents a part of research plan of “Advanced Endodontic Technology Development”. In order to aid endodontic treatment a 3-D computer model of root canals has been created which shows the geometrical characteristics. The extent of work needed for root canal treatment is obtained from this 3-D model. The objective of this paper is to convert the geometrical characteristics into automatic treatment procedure planning. This computer-aided process planning for endodontic treatment determines tool selection and process method. It also calculates tool path and optimum tool movement distance. The output of this planning system is a numerical controlled program. Because of paper size limitation, only tool selection and path control during coronal canal treatment preparation for anterior teeth are discussed in the paper. The computer-aided treatment procedure planning system provides transformation from a 3-D canal model to a machine-controlled program that will yield a treated root canal ready for filling. It serves as a bridge between design (3-D canal model) and manufacturing (canal treatment). Unlike conventional methods for root canal treatment, the computer-aided treatment process planning system emphasizes a non-destructive internal tooth geometry examination and less invasive access preparation.
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Reports on the topic "Canal"

1

Salazar, Jennifer. Canal Park. Landscape Architecture Foundation, 2015. http://dx.doi.org/10.31353/cs0870.

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Hill, Kristina, and Michael Geffel. Richmond Canal Walk. Landscape Architecture Foundation, 2011. http://dx.doi.org/10.31353/cs0070.

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McAlpin, Tate O., Rutherford C. Berger, and Amena M. Henville. Bush Canal Floodgate Study. Fort Belvoir, VA: Defense Technical Information Center, July 2009. http://dx.doi.org/10.21236/ada538125.

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Sanchez, Mario, S. Keith, and Morgan Johnston. Houma Navigation Canal Lock Complex (TE-113) study, Louisiana : Houma Navigation Canal ship simulation results. Engineer Research and Development Center (U.S.), November 2019. http://dx.doi.org/10.21079/11681/34582.

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Swetz, Frank J. Mathematical Treasure: Problems fromZibaldone da Canal. Washington, DC: The MAA Mathematical Sciences Digital Library, August 2012. http://dx.doi.org/10.4169/loci003905.

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Vander Velde, E. J. Tubewells in Pakistan distributary canal commands. International Irrigation Management Institute (IIMI), 1992. http://dx.doi.org/10.5337/2013.022.

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Maddox, William T. Panama Canal Beyond the Year 2000. Fort Belvoir, VA: Defense Technical Information Center, April 1994. http://dx.doi.org/10.21236/ada276578.

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Parchure, T. M., Steven C. Wilhelms, Soraya Sarruff, and William H. McAnally. Salinity Intrusion in the Panama Canal. Fort Belvoir, VA: Defense Technical Information Center, April 2000. http://dx.doi.org/10.21236/ada378475.

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Aguayo Ulloa, Lorena. Componente socioeconómico: calidad de la canal y de la carne. Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA, 2022. http://dx.doi.org/10.21930/agrosavia.infografia.2022.14.

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La canal, es el producto primario en el proceso de producción de carne. La canal, es la pieza de transición más importante entre el animal vivo y la carne siendo la unidad fundamental para el comercio del sector cárnico formal. Para evaluar la canal de manera comercial, los parámetros objetivos comúnmente usados son: el peso y el rendimiento centesimal.
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Hite, John E., and Jr. Inner Harbor Navigation Canal Replacement Lock Filling and Emptying System, Inner Harbor Navigation Canal, New Orleans, Louisiana. Fort Belvoir, VA: Defense Technical Information Center, March 2003. http://dx.doi.org/10.21236/ada413187.

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