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Journal articles on the topic 'Bevelen'
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Kumar, Bholu, Suresh Kant Verma, and Shantanu Srivastava. "Mixing Characteristics of Supersonic Jet from Bevelled Nozzles." International Journal of Heat and Technology 39, no. 2 (April 30, 2021): 559–72. http://dx.doi.org/10.18280/ijht.390226.
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The present study focuses on the effect of nozzle exit inclination on the mixing characteristics of Mach 2.17 overexpanded jets at the NPR 5, NPR 6 and NPR 7, using commercial software package ANSYS Fluent. The convergent-divergent nozzles, investigated are circular nozzle and bevel nozzle with bevel angle 300, and bevel angel 450. The nozzles are constructed with equal throat-to-exit area ratio, in order to maintain uniform Mach number at the nozzle exit. From the results, it was found that, the bevelled nozzles effectively reduce the jet core as much as 46%, indicating enhanced jet mixing. It was also observed that at lower NPR, i.e., at NPR 5, the Bevel30 nozzle is found superior over Bevel45 and circular nozzle and at the intermediate NPR, both of the Bevel30 and Bevel45 nozzle reduces the jet core with the same rate. However, at highest NPR of the present study, the Bevel45 nozzle exhibits the highest mixing enhancement. An early axis switching is seen for the Bevel30 jet at NPR 5 and for the Bevel45 jet at NPR 7.
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Kacarska, Marina. "Clinical Evaluation of Root End Resection Bevel in Periapical Surgery." PRILOZI 38, no. 1 (March 1, 2017): 113–18. http://dx.doi.org/10.1515/prilozi-2017-0015.
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Abstract Root end resections play an important role in the success of periapical surgery. Beveling of the root end resections can vary significantly depending on the surgical technique, the root and canal morphology. The intention of this article was to clinically assess the root resections bevels and to estimate their relation to applied periapical surgeries. A prospective clinical study consisted of sixty periapical surgeries performed on teeth with chronic periapical lesions. Thirty periapical surgeries were performed in a conventional manner, while thirty were contemporary ultrasonic surgeries. Following the completion of strictly planned and performed intraoperative procedures, the resection bevels were assessed. To obtain the real bevel angles a compass was used. Root resections were significantly less beveled in all teeth operated with contemporary ultrasonic surgery, with mean values between 2.1° to 7.8°. The number of roots and their dilacerations didn’t influence the root resection bevel. For comparison, root resections were significantly beveled in all conventionally operated teeth, with mean values of 46°. Due to the technical limitations of the conventional periapical surgery, mandibular premolars were exclusively operated with ultrasonic periapical surgery, with mean values of resection bevel not exceeding 20.7°. Significantly lesser resection bevel associated with ultrasonic periapical surgery contributes to root preservation and favorable surgical outcome.
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DESMET W. "De in de huisartsenpraktijk aan te bevelen acties bij een myocardinfarct." Tijdschrift voor Geneeskunde 60, no. 6 (January 1, 2004): 451–52. http://dx.doi.org/10.2143/tvg.60.6.5001831.
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Reimers, H. K. O. "De jaarrekeningprocedure na Hoge Raad inzake Spyker." Maandblad Voor Accountancy en Bedrijfseconomie 84, no. 5 (May 1, 2010): 237–43. http://dx.doi.org/10.5117/mab.84.16930.
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Het oordeel van de Hoge Raad over de jaarrekening van Spyker biedt belangrijke inzichten voor het toezicht op de financiële verslaggeving en de jaarrekeningprocedure. Hoe de rechter omgaat met het IFRS-toetsingskader, de ruimte voor de Ondernemingskamer om een herziening van de jaarrekening te bevelen, de rol van de Ondernemingskamer en van de accountant in de procedure worden besproken. De beschikking van de Hoge Raad legt diverse knelpunten in het toezicht op verslaggeving en de jaarrekeningprocedure bloot, maar geeft ook duidelijkheid.
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van der Wurff, Peter. "Welke tests zijn aan te bevelen bij problematiek van het SI-gewricht?" Stimulus 22, no. 2 (June 2003): 97–101. http://dx.doi.org/10.1007/bf03063004.
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Kamp, Bart, and Victor van Pelt. "De mededeling omtrent gebleken fundamentele fouten." Maandblad Voor Accountancy en Bedrijfseconomie 88, no. 9 (September 9, 2014): 349–57. http://dx.doi.org/10.5117/mab.88.31349.
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Zodra na het vaststellen van een jaarrekening wordt ontdekt dat de jaarrekening in ernstige mate tekortschiet in het geven van inzicht, verplicht de wet het bestuur om hiervan mededeling te doen bij het Handelsregister. Deze mededelingen komen in de praktijk echter relatief weinig voor. Een mogelijke verklaring hiervoor is dat men in het zicht van het publiceren van de volgende jaarrekening waarin deze fout al wordt vermeld, afziet van deze mededeling. Indien de jaarrekening inderdaad op zeer korte termijn wordt gepubliceerd past dit bij het doel van deze wettelijke bepaling. Een snelle publicatie van de volgende jaarrekening is bovendien aan te bevelen omdat het opvragen van désaveuverklaringen in de praktijk moeizaam blijkt.
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. "2005/8 Gynaecoloog; patiënte vordert schadevergoeding; verjaringstermijn gestuit door verzoek tot bevelen van voorlopig deskundigenbericht." Tijdschrift voor Gezondheidsrecht 29, no. 3 (March 2005): 196–98. http://dx.doi.org/10.1007/bf03056129.
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Coelho-de-Souza, Fabio Herrmann, Celso Afonso Klein-Júnior, Junara Cristina Camargo, Tiago Beskow, Matheus Dalmolin Balestrin, and Flávio Fernando Demarco. "Double-Blind Randomized Clinical Trial of Posterior Composite Restorations with and without Bevel: 6-Month Follow-up." Journal of Contemporary Dental Practice 11, no. 2 (2010): 1–8. http://dx.doi.org/10.5005/jcdp-11-2-1.
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Abstract Aim This double-blind randomized clinical trial compared the performance of posterior composite restorations with and without bevel. Methods and Materials Thirteen volunteers requiring at least two posterior Class II restorations were selected. Twenty-nine cavity preparations were performed, comprising 14 without bevel (butt joint) and 15 with marginal beveling. All cavities were restored with a simplified adhesive system (Adper Single Bond, 3M ESPE, St. Paul, Minnesota, USA) and composite resin (Filtek P60, 3M ESPE, St. Paul, Minnesota, USA). A halogen light-curing unit (XL 3000, 3M ESPE, St. Paul, Minnesota, USA) was used throughout the study. Restorations were polished immediately. Analysis was carried out at baseline and after six months by a calibrated evaluator (kappa), according to FDI criteria. Results The results were statistically analyzed by Kruskal-Wallis and Mann-Whitney tests (p<0.05). Beveled and nonbeveled restorations performed similarly after six months in relation to fractures and retention, marginal adaptation, postoperative hypersensitivity, recurrence of caries, surface luster, and anatomic form. However, for surface and marginal staining, beveled restorations showed significantly better performance than butt joint restorations (p<0.05). Conclusion Restorations performed were acceptable after six months, but beveled restorations showed less marginal staining than nonbeveled restorations. Clinical Significance Bevel used in posterior composite restorations decreased the surface and marginal staining, in six-month evaluations. Citation Coelho-de-Souza FH, Klein-Júnior CA, Camargo JC, Beskow T, Balestrin MD, Demarco FF. Double-Blind Randomized Clinical Trial of Posterior Composite Restorations with and without Bevel: 6-Month Follow-up. J Contemp Dent Pract [Internet]. 2010 March; 11(2):001-008. Available from: http://www.thejcdp.com/journal/view/ volume11-issue2-souza.
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De Oliveira, Pâmella Tomazi Godoy, Rodrigo Monteiro Vieira, Patrícia Dos Santos Jardim, Celso Afonso Klein Júnior, Ewerton Nochi Conceição, Maria Carolina Guilherme Erhardt, and Fábio Herrmann Coelho de Souza. "Influence of filling technique and bevel preparation on marginal sealing of conventional and low shrinkage composite restorations." Journal of Research in Dentistry 2, no. 6 (June 11, 2015): 474. http://dx.doi.org/10.19177/jrd.v2e62014474-485.
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AIM: The aim of this study was to evaluate two composite restorations (conventional methacrylate-based and low shrinkage-based silorane), associated or not to beveling and incremental technique, in relation to the microleakage and marginal gap formation tests. MATERIAL AND METHODS: 30 sound human molars had their mesial and distal surfaces prepared with and without bevel. The teeth were divided into six groups according to the type of resin (conventional nanofilled or silorane resin), and restorative filling technique (incremental technique or builk). Microleakage and marginal gap formation data were statistically analyzed by Kruskal-Wallis and Chi-Square tests, with a significance level set at 5%. RESULTS: Group 1 (Z350 XT, without bevel, incremental technique) presented highest rate of microleakage and marginal gap in most of the restorations, with statistically significant differences. Groups 4 and 6 (P90, beveled, builk and P90, beveled and incremental technique) had lower rates of microleakage and absence of marginal gaps in most of the restorations. CONCLUSION: It’s concluded that the silorane showed lower rates of marginal gaps and microleakage, when compared to the conventional methacrylate-based resin. Bevel preparation was effective in reducing microleakage and marginal gaps for both resins used. Incremental technique was not necessary when associated with low shrinkage composite resin.
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Lipo, Carl P., Robert C. Dunnell, Michael J. O’Brien, Veronica Harper, and John Dudgeon. "Beveled Projectile Points and Ballistics Technology." American Antiquity 77, no. 4 (October 2012): 774–88. http://dx.doi.org/10.7183/0002-7316.77.4.774.
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AbstractExplanations for beveled blade edges on projectile points have been debated in North America archaeology since the first systematic description oflithic assemblages in the nineteenth century. Debate has centered around two opposing perspectives. One views beveled edges as features of projectile points that cause them to spin during flight. The other views beveling as a product of edge resharpening that is done unifacially to conserve scarce resources. Here we use a fluid-dynamics model to simulate the effect beveling has on projectiles. Expectations derived from this modeling are evaluated using windtunnel experiments. Our findings indicate that beveling produces in-flight rotation that serves as a means of increasing accuracy in relatively low-velocity flight paths.
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Verkruijsse, J. P. J. "Bedrijfsrisico’s: de nieuwe insteek van de controle van de jaarrekening." Maandblad Voor Accountancy en Bedrijfseconomie 76, no. 10 (October 1, 2002): 440–46. http://dx.doi.org/10.5117/mab.76.11768.
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Het Audit Risk Model is begin jaren negentig in het MAB onderwerp geweest van een uitgebreide discussie. Momenteel zijn de internationale regelgevers bezig om in dit model het element bedrijfsrisico’s op te nemen. In dit artikel wordt nader ingegaan op de relatie tussen bedrijfsrisico’s en jaarrekeningrisico’s, met als doelstelling de discussie over het model van risicoanalyse verder te voeren. Risicoanalyse is een fase in het controleproces dat veelal complexe oordeelsvorming met zich meebrengt. De auteurs bevelen aan om bij zowel de interne als de externe reviews van uitgevoerde controlewerkzaamheden de aandacht specifiek te richten op het proces van oordeelsvorming en de uitkomst daarvan, alsmede op de wijze waarop de voor de uitkomst verkregen deugdelijke grondslag is gedocumenteerd. Gelet op de voor het uitvoeren van risicoanalyse benodigde sectorspecifieke kennis mag worden verwacht dat accountantsorganisaties hun kennis en kunde meer en meer gaan structureren langs de weg van business-sectorspecialisatie. Nader onderzoek is dan ook nodig naar het ondersteunend gebruik van business models. Ten slotte is van belang dat ook de reguliere accountantsopleidingen voorzien in gericht onderwijs van aankomende accountants op het gebied van de moderne controlebenadering.
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Pettigrew, Devin B., John C. Whittaker, Justin Garnett, and Patrick Hashman. "How Atlatl Darts Behave: Beveled Points and the Relevance of Controlled Experiments." American Antiquity 80, no. 3 (July 2015): 590–601. http://dx.doi.org/10.7183/0002-7316.80.3.590.
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Beveled retouch on stone projectile points has often been considered as a device to spin and stabilize a projectile. A recent paper showed that a beveled point will spin a small shaft under tightly controlled laboratory conditions. However, this experiment has little relevance for real projectiles such as atlatl darts, which flex dramatically and spin unevenly inflight, quite independent of point form. The spinning is related to the flexibility of the dart, which is necessary for spearthrower functión. A beveled point cannot spin a dart in the air, but is likely to cause some rotation when encountering a solid target like flesh. Beveled points are probably not related to spinning either darts or arrows inflight and present a good example of why we need to have both theoretical understanding and experimental observations of details of projectile behavior before interpreting artifacts. Spinning in a carcass could make beveled points more lethal, but the suggestion that beveling mostly results from sharpening and other modification of stone points remains the best explanation.
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James Stemp, W., Jaime J. Awe, Keith M. Prufer, and Christophe G. B. Helmke. "Design and Function of Lowe and Sawmill Points from the Preceramic Period of Belize." Latin American Antiquity 27, no. 3 (September 2016): 279–99. http://dx.doi.org/10.7183/1045-6635.27.3.279.
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To date, 81 stemmed and barbed preceramic (Archaic) points (8000–900 B.C.) have been identified in Belize. Fifty-four are Lowe points; 21 are Sawmill points. Four more are provisionally classified as Allspice and two as Ya’axche’ points. These stemmed bifaces are frequently beveled on alternate-opposite edges and demonstrate variable degrees of resharpening and reworking, which affects blade shape and tool size. Numerous functions have been attributed to these artifacts; specifically, they have been called spear points, dart points, harpoons, and knives. Metric data from these bifaces, limited macrowear and microwear analyses, and design features, such as barbs and alternate-opposite edge beveling, have been used to interpret likely tool functions. Results suggest that Lowe points were affixed to throwing/thrusting spears and also served as knives, whereas the Sawmill points were used as spear-thrower dart points and as knives. New dating information suggests that alternate-opposite edge beveling and consequently beveled bifaces may be much older than 2500–1900 B.C., which is the date currently assigned to these specimens.
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Hardeman, Erwin. "De RJ-richtlijnen als verslaggevingsstandaard in de toelichting van de jaarrekening." Maandblad Voor Accountancy en Bedrijfseconomie 93, no. 9/10 (October 28, 2019): 265–73. http://dx.doi.org/10.5117/mab.93.35761.
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Volgens art. 2:362 lid 10 BW dient in de toelichting op de jaarrekening vermeld te worden volgens welke wettelijke verslaggevingsstandaard de jaarrekening is opgesteld. De RJ-richtlijnen van de Raad voor de Jaarverslaggeving zijn geen wettelijk erkende verslaggevingsstandaard. Hoewel het wettelijk aanknopingspunt ontbreekt is het een rapporterende rechtspersoon niet verboden om in aanvulling op de vermelding van een wettelijk toegestane verslaggevingsstandaard een verwijzing naar deze richtlijnen in de jaarrekening op te nemen. Resultaten uit dit empirisch onderzoek onder middelgrote controleplichtige rechtspersonen over verslagjaar 2016 laten zien dat het geheel niet vermelden van een verslaggevingsstandaard in de jaarrekening voorkomt (8%). Verder blijkt dat er in bijna de helft van de jaarrekeningen gecontroleerd door accountantsorganisaties zonder een OOB-vergunning een verwijzing naar de RJ-richtlijnen als verslaggevingstandaard plaatsvindt (49%). Bij rechtspersonen die worden gecontroleerd door accountantsorganisaties met een OOB-vergunning wijkt de mate van verwijzing af van niet-OOB-vergunninghouders. ‘Next 5-accountantsorganisaties’ – zijnde niet-Big 4 OOB-vergunninghouders – verwijzen meer naar de RJ-richtlijnen (57%). In jaarrekeningen met betrokkenheid van de ‘Big 4-accountantsorganisaties’ komt een verwijzing naar de RJ-richtlijnen beduidend minder vaak voor (28%). De meest voorkomende type verwijzing naar de RJ-richtlijnen is deze naar de ‘stellige uitspraken’ van de Raad voor de Jaarverslaggeving (72%). De onderzoeksbevindingen zijn voor mij aanleiding om aan te bevelen een bovenwettelijke verwijzing, zoals de RJ-richtlijnen, niet te verantwoorden in de jaarrekening omdat daar geen wettelijke verplichting voor bestaat en complicerend werkt voor zowel gebruikers van de jaarrekening als controlerend accountants.
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Tsai, Y. C., and P. C. Chin. "Surface Geometry of Straight and Spiral Bevel Gears." Journal of Mechanisms, Transmissions, and Automation in Design 109, no. 4 (December 1, 1987): 443–49. http://dx.doi.org/10.1115/1.3258815.
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The fundamental geometrical characteristics of bevel gears have been discussed in this study. The mathematical modeling of the tooth surface geometry of bevel gears can be developed based on the basic gearing kinematics and involute geometry along with the tangent planes geometry. The parametric representations of the spherical involute and the involute spiraloid, which are the tooth surface geometry of straight bevels and spiral bevels, respectively, have been derived in this paper. This study may provide some fundamentals for computer numerical controlled manufacturing of bevel gears.
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Synarellis, Athanasios, Pantelis Kouros, Elisabeth Koulaouzidou, Dimitrios Strakas, and Eugenia Koliniotou-Koumpia. "In Vitro Microleakage of class V Composite Restorations prepared by Er,Cr:YSGG Laser and Carbide BUR." Balkan Journal of Dental Medicine 21, no. 1 (March 1, 2017): 24–31. http://dx.doi.org/10.1515/bjdm-2017-0004.
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SummaryBackground: The aim of this in vitro study was to compare the degree of microleakage on enamel and dentin margins of class V cavities prepared with either a high-speed drill or an Er,Cr:YSGG laser (2780 nm) and to associate their use with a beveling method for the margin.Method and Materials: Sixty bovine incisors were randomly distributed into three groups. Group 1 (G1) cavities were laser prepared and bur beveled, group 2 (G2) cavities were bur prepared and beveled, while cavities of group 3 (G3) were laser prepared and beveled. Cavities were restored with selective enamel etching, using the same bonding agent and nano-hybrid resin composite for all groups. After thermocycling, microleakage was assessed using a methylene blue dye penetration method.Results: Statistical analysis (Mann-Whitney, Kruskal-Wallis and post-hoc Dunn’s multiple comparison tests) demonstrated significantly higher microleakage for dentin compared to enamel margins in G1. Enamel margin microleakage was found to be significantly higher at G3 compared to G1 (p=0.032) and G2 (p=0.001), while no significant differences were found between G1 and G2 (p=0.850). Regarding dentin margins, G2 group performed significantly better than G1 and G3 (p<<0.001), while there was no significant difference among G1 and G3 scores (p=1.000).Conclusions: The conventional cavity preparation method seems to perform better in terms of microleakage than the Er,Cr;YSGG laser. Laser-prepared cavities could perform better in terms of microleakage if an additional step of enamel bur-beveling is performed prior to restoration.
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Cooney, Thomas F., H. Trey Skinner, and S. M. Angel. "Comparative Study of Some Fiber-Optic Remote Raman Probe Designs. Part I: Model for Liquids and Transparent Solids." Applied Spectroscopy 50, no. 7 (July 1996): 836–48. http://dx.doi.org/10.1366/0003702963905592.
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We have developed models describing the sensitivity and sampling volume of various remote fiber-optic Raman probes—single-fiber, lensed, dual-fiber beveled-tip, dual-fiber flat-tipped, and multi-fiber flat-tipped. The models assume clear samples and incorporate radii, separation, bevel angle, and numerical aperture of the fibers; overlap geometry of illumination and excitation light cones; and refractive index of immersion medium. For the Raman spectra of solid samples in air, single-fiber and lensed probes are predicted to yield the highest Raman signal. Beveled probes should provide greater Raman signal strength than do flat-tipped probes because beveled probes can collect light from a restricted volume closer to the probe end. Although multiple collection fibers improve Raman signal strength, progressively distant concentric fiber rings contribute less and sample material further from the probe.
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Ameri, Hamideh, Marjaneh Ghavamnasiri, and Ehsan Abdoli. "Effects of Load Cycling on the Microleakage of Beveled and Nonbeveled Margins in Class V Resin-Based Composite Restorations." Journal of Contemporary Dental Practice 11, no. 5 (2010): 25–32. http://dx.doi.org/10.5005/jcdp-11-5-25.
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Abstract Aim This study evaluated the influence of mechanical loading and thermocycling on microleakage of class V resin-based composite restorations with and without enamel bevel. Methods and Materials Sixty class V cavity preparations measuring 3.0 mm wide (mesiogingivally) x 2.0 mm high (occluso-gingivally) x 1.5 mm deep with the occlusal margin in enamel and the gingival margin in cementum were prepared on the buccal surfaces of human premolars using a #12 diamond round bur (Drendel & Zweiling Diamant GmbH, Lemgo, Germany) in a high-speed, water-cooled handpiece. The specimens were then divided into two groups of 30 specimens each, based on the type of enamel cavosurface margin configuration as beveled or nonbeveled (butt joint). After restoring the preparations with a flowable resin-based composite (Tetric Flow, Ivoclar Vivadent-AG, Schaan, Liechtenstein) and finishing and polishing with sequential discs (Sof-Lex Pop-on, 3M-ESPE, St. Paul, MN, USA), the teeth were stored at 37°C and 100 percent humidity. Twenty-four hours later, half of the specimens in each group (nonbeveled “N” or beveled “B”) were exposed to a cycling loading for 250,000 cycles to simulate occlusal loading and assigned to two subgroups (NL+ or BL+), while the remainder of the specimens in each group were only maintained in a 100-percent-humidity environment, without any cyclical loading, until tested (NL– or BL–). The specimens were sealed with sticky wax (Kemdent, Associated Dental Products, Swindon, UK) and nail polish. The apical foramen of each tooth was sealed with sticky wax and the rest of the tooth was covered with nail varnish, except for an area within 1.0 mm around the composite restoration. To detect marginal leakage, all of the samples were stored in a 0.5 percent basic fuchsine solution for 24 hours. The specimens were then sectioned longitudinally using a low-speed diamond blade (IsoMet, Buehler Ltd., Lake Bluff, IL, USA), machined, and evaluated under 25X magnification using a stereomicroscope (M9, Wild Heerbrugg, Switzerland). The specimens were scored on a scale from 1 to 4 on the degree of dye penetration. The qualitative data were analyzed by the Mann- Whitney U test at a 5 percent significance level (p<0.05). The null hypothesis of this study was that there is no difference in microleakage between beveled and nonbeveled class V buccal preparations in premolar teeth restored with resinbased composite and subjected to simulated occlusal loading and thermocycling. Results In each group the gingival margin showed significantly more microleakage than the enamel margin (p<0.05). Load cycling did not result in an increase in microleakage in nonbeveled (p=0.259) or in beveled (p=0.053) occlusal margins. However, the gingival margins showed a statistically significant difference in microleakage after load cycling whether in cavities with enamel occlusal bevel (p=0.004) or in groups without a bevel. This means the enamel margin configuration of the enamel occlusal margin had no effect on decreasing microleakage in the gingival aspect of class V composite restorations. In general, the nonbeveled preparations in this study had significantly less microleakage than the bevel specimens whether they were loaded occlusally or not (p=0.001). Clinical Significance Within the limitations of this in vitro study, no benefit was derived from placing an enamel cavosurface bevel on the occlusal margin of a standardized class V composite restoration located at the cementoenamel junction. The most important consideration is to prevent microleakage along the gingival margin regardless of whether the occlusal enamel margin is beveled. Citation Ameri H, Ghavamnasiri M, Abdoli E. Effects of load cycling on the microleakage of beveled and nonbeveled occlusal margins in class V resin-based composite restorations. J Contemp Dent Pract [Internet]. 2010 October; 11(5):025- 032. Available from: http://www.thejcdp.com/ journal/view/volume11-issue5-ghavamnasiri
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Pattison, Gary. "Soldier self-defence: the theoretical and legal bases for command-imposed restrictions." Military Law and the Law of War Review 59, no. 1 (June 2, 2021): 23–43. http://dx.doi.org/10.4337/mllwr.2021.01.02.
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This article confronts what has been described as the ‘ongoing self-defence controversy’ within the international military community over the legitimacy of commanders issuing orders that have the practical effect of restricting soldiers’ use of force in self-defence. Within this controversy, some argue that soldier self-defence is legally sacrosanct, a right that must invariably take precedence over any command-imposed restrictions. This article explores whether there is any legal basis for this view. It finds that there is not, and that such an absolutist approach misconstrues the basic theoretical and legal origins of self-defence. What is more, the article forewarns that reasoning in such absolute terms might actually serve to devalue rather than promote soldiers’ safety by failing to properly account for the longstanding military tradition of commands such as ‘hold fire’ orders, the central importance of these directives to the ordered application of military force and military effectiveness, and the interrelationship of the military and the state’s responsibility for national security. Cet article se penche sur la controverse qui entoure la légitime défense au sein de la communauté militaire internationale, quant à la légitimité du commandement de donner des ordres ayant pour effet, dans la pratique, de restreindre l’emploi de la force des soldats à des fins de légitime défense. Dans le cadre de cette controverse, certains soutiennent que la légitime défense des soldats est sacro-sainte d’un point de vue juridique et que ce droit doit toujours l’emporter sur toute restriction imposée par le commandement. Cet article cherche à déterminer si ce point de vue repose sur un fondement juridique. L’article conclut que non, et qu’une telle approche absolutiste dénature les origines théoriques et juridiques à la base de la légitime défense. Qui plus est, l’article met en garde qu’un raisonnement en de tels termes absolus pourrait en fait nuire à la sécurité des soldats, au lieu de l’améliorer, parce qu’il ne tient pas suffisamment compte de la longue tradition militaire d’ordres tels que «halte au feu», de l’importance de ces directives pour l’application ordonnée de la force militaire et pour l’efficacité militaire, et de l’interaction entre l’armée et la responsabilité de l’État pour la sécurité nationale. Dit artikel gaat in op wat is omschreven als de ‘voortdurende controverse over zelfverdediging’ binnen de internationale militaire gemeenschap over de legitimiteit van commandanten die bevelen uitvaardigen waarbij het gebruik van geweld door soldaten uit zelfverdediging praktisch wordt beperkt. Binnen deze controverse betogen sommigen dat de zelfverdediging van soldaten wettelijk onaantastbaar is, een recht dat altijd voorrang moet hebben op alle beperkingen die door het commando worden opgelegd. Dit artikel gaat na of er een wettelijke basis is voor dit standpunt. De conclusie is dat die er niet is en dat een dergelijke absolutistische benadering de theoretische en juridische grondslagen van zelfverdediging miskent. Bovendien waarschuwt het artikel dat een redenering in dergelijke absolute termen de veiligheid van de soldaten eerder zou kunnen aantasten dan bevorderen, doordat niet naar behoren rekening wordt gehouden met de gevestigde militaire traditie van bevelen zoals ‘staakt het vuren’-bevelen, het centrale belang van deze richtlijnen voor de bevolen toepassing van militair geweld en militaire doeltreffendheid, en de onderlinge relatie tussen het leger en de verantwoordelijkheid van de staat voor de nationale veiligheid. Este artículo aborda lo que se ha venido a llamar la ‘controversia existente en torno a la autodefensa’ dentro de la comunidad militar internacional sobre la legitimidad de los comandantes que emiten órdenes que tienen el efecto práctico de restringir el uso de la fuerza en defensa propia por parte de los soldados. Dentro de esta controversia, algunos argumentan que la autodefensa de los soldados es legalmente sacrosanta, un derecho que invariablemente debe prevalecer sobre cualquier restricción impuesta por el mando. Este artículo explora si existe alguna base legal para este punto de vista. Se llega a la conclusión de que no existe base alguna y que tal enfoque absolutista malinterpreta los orígenes teóricos y legales básicos de la autodefensa. A mayor abundamiento, el artículo advierte que el razonamiento en términos tan absolutos podría servir para devaluar, en lugar de promover, la seguridad de los soldados al no tener en cuenta adecuadamente la tradición militar inmemorial de órdenes como las órdenes de ‘mantener el fuego’, la importancia central de estas directivas para la aplicación ordenada de la fuerza militar y la eficacia militar, y la interrelación de las fuerzas armadas y la responsabilidad del Estado por la seguridad nacional. Questo articolo affronta quella che è stata descritta come la ‘continua controversia di autodifesa’ all'interno della comunità militare internazionale sulla legittimità dei comandanti che emettono ordini che hanno l'effetto pratico di limitare l'uso della forza da parte dei soldati nell'autodifesa. All'interno di questa controversia, alcuni sostengono che l'autodifesa dei soldati sia giuridicamente sacrosanta, un diritto che deve invariabilmente avere la precedenza su qualsiasi restrizione imposta dal comando. Questo articolo esamina se vi sia una base giuridica per questa interpretazione. Trova che non esiste, e che un tale approccio rigido fraintenda le origini teoriche e giuridiche di base di autodifesa. Inoltre, l'articolo ammonisce che ragionare in termini così assoluti potrebbe effettivamente sminuire piuttosto che promuovere la sicurezza dei soldati, non riuscendo a tenere adeguatamente conto della lunga tradizione militare di comandi come ‘non aprire il fuoco’, dell'importanza centrale di queste direttive per l'ordinata applicazione della forza militare e dell'efficacia militare e l'interrelazione tra la responsabilità militare e quella dello Stato per la sicurezza nazionale. Dieser Artikel befasst sich mit dem, was innerhalb der internationalen Militärgemeinschaft bezeichnet wird als ‘andauernde Selbstverteidigungskontroverse’ (‘ongoing self-defence controversy’) in Bezug auf die Legitimität von Befehlshabern, die Befehle erteilen, wobei die Gewaltanwendung aus Selbstverteidigung durch Soldaten praktisch beschränkt wird. Im Rahmen dieser Kontroverse argumentieren manche, dass die Selbstverteidigung von Soldaten rechtlich als sakrosankt gilt und dass dieses Recht immer vor jeder vom Kommando auferlegten Beschränkung Vorrang haben muss. Dieser Artikel prüft, ob es irgendeine gesetzliche Basis für diese Auffassung gibt. Der Autor stellt fest, dass dies nicht der Fall ist, und dass eine solche absolutistische Sichtweise die theoretischen und gesetzlichen Grundlagen der Selbstverteidigung verkennt. Darüber hinaus erteilt der Artikel eine Warnung, auf diese absolute Weise zu argumentieren könnte eigentlich dazu beitragen, die Sicherheit der Soldaten zu beeinträchtigen statt sie zu fördern, indem der althergebrachten militärischen Tradition von Befehlen, wie ‘Feuer einstellen’, der zentralen Bedeutung dieser Richtlinien für die geordnete Anwendung von Militärgewalt und für die Militäreffizienz sowie der Wechselbeziehung zwischen der Armee und der Verantwortung des Staates für die nationale Sicherheit nicht gebührendermaßen Rechnung getragen wird.
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Zhou, Hai, Xiao Ming Xu, Xiang Gao, and Huan Feng. "Research on Subsurface Damage Layer Detection during Substrate Processing." Advanced Materials Research 797 (September 2013): 673–78. http://dx.doi.org/10.4028/www.scientific.net/amr.797.673.
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Double-substrate angle polishing is presented for detecting depth of sub-surface damage layer during sapphire substrate grind process. Bimorph overlap bond is used in the double-substrate angle polishing, and when measuring the beveled corrosion crack, measurement errors caused by the traditional angle polish which results in fussy boundaries between polished bevel and the edge of the original wafer plane is avoided. Also digital length measurement is used to measure specimens polished bevel machining contours, then calculate accurate slant angles, eliminate errors of inaccurate angle values and improve measurement accuracy. This experiment has tested the length of mono-crystal polished bevel crack is 175um, the angle of slant is 4.85°. According to theoretical calculation, the double-sided grinding substrate subsurface damage layer is 15um, and the depth of double-sided crystal surface is about 30um. Grinding parameters: 320# boron carbide aqueous solution, lapping pressure 110g/cm2, grinding speed 30r/min.
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Gad, Mohammed Moustafa Ahmed, Reem Abualsaud, Ahmad M. Al-Thobity, Danah F. Almaskin, Zahra A. AlZaher, Tahani H. Abushowmi, Masoumah S. Qaw, Sultan Akhtar, and Fahad A. Al-Harbi. "Effect of SiO2 Nanoparticles Addition on the Flexural Strength of Repaired Acrylic Denture Base." European Journal of Dentistry 14, no. 01 (January 19, 2020): 019–23. http://dx.doi.org/10.1055/s-0039-1701076.
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Abstract Objective The objective of this study was to evaluate the effect of nano-SiO2 addition on the flexural strength (FS) of repaired acrylic denture base. Materials and Methods Heat-polymerized acrylic resin specimens were fabricated in dimensions of (65 × 10 × 2.5 ± 0.1 mm3 ) and then sectioned and prepared, creating repair gap with butt (90 degrees) and bevel (45 degrees) repair surface designs forming two main groups according to joint design. Further subdivision was done into four groups (n = 10) according to nano-SiO2 concentration: one unmodified group and three modified groups (0.25, 0.5, and 0.75 wt %) in the autopolymerized repair resin. Each pair of a specimen was assembled in a mold and repaired according to manufacturer’s recommendations. Statistical Analysis Three-point bending test was done to measure FS, followed by scanning electron microscope (SEM) examination for fracture surface analysis. Data were analyzed using ANOVA and Tukey’s post hoc test (α = 0.05). Results The addition of nano-SiO2 significantly improved FS of repaired acrylic resin in comparison to the unmodified group (p ˂ 0.05). For butt joint, significant differences between nano-SiO2 reinforced groups were noticed (p ˂ 0.05), while reinforced beveled groups did not differ significantly (p ˃ 0.05). Bevel design remarkably increased FS compared with butt design per respective filler concentration. From the SEM images, improved FS was presented with a homogeneous distribution of nano-SiO2 within polymethyl methacrylate. Conclusion Nano-SiO2 addition to repair resin and 45 degree-beveled repair surface increased FS of repaired acrylic resin.
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Maruyama, Masaaki. "Long-Tapered Double Needle Used to Reduce Needle Stick Nerve Injury." Regional Anesthesia: The Journal of Neural Blockade in Obstetrics, Surgery, & Pain Control 22, no. 2 (March 1997): 157–60. http://dx.doi.org/10.1136/rapm-00115550-199722020-00009.
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Background and ObjectivesNeedle trauma may cause peripheral nerve injuries during performance of peripheral nerve block.MethodsFour types of 21-gauge needles for regional anesthesia were compared: a beveled nerve block needle (Quincke type); a short-tapered needle with a side orifice (Whitacre type); a long-tapered needle with a side orifice (Sprotte type); and a long-tapered double needle combining an inner pencil-point fine needle with an outer truncated conical needle (a new type). This new needle was developed to reduce the potential for nerve injury while retaining a suitable flow rate of anesthetic solution and the ability to inject the solution precisely at the point of paresthesia elicited by the tip. Each type of needle was used to produce puncture injuries to rabbit sciatic nerves. Eighteen specimens were studied within each needle group. The beveled needle was used to produce two different types of nerve injuries by inserting it either transverse or longitudinal to the nerve fibers. Each histologic specimen of the nerve with the needle puncture was surfacestained with hematoxylin-eosin and Bodian's method. Subsequently, the number of damaged axons was histomorphologically counted and statistically evaluated.ResultsBoth long-tapered needles produced significantly fewer transected axons than the beveled needle inserted with the bevel longitudinal to the nerve fibers.ConclusionThe long-tapered needles produced the least number of transected nerve fibers after sciatic nerve puncture.
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Ghavamnasiri, Marjaneh, and Mahshid Bagheri. "Effect of Cavosurface Margin Configuration of Class V Cavity Preparations on Microleakage of Composite Resin Restorations." Journal of Contemporary Dental Practice 9, no. 2 (2008): 122–29. http://dx.doi.org/10.5005/jcdp-9-2-122.
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Abstract Aim The aim of this study was to compare the marginal leakage of hybrid and microfilled composite resin in Class V restorations with and without an enamel bevel. Methods and Materials Fifty-six cavities were prepared on the buccal and lingual surfaces of 28 extracted human molars using a round bur with the dimensions of 3×2×1.5 mm. The specimens were divided into two groups of 28 based on the cavosurface margin configuration (beveled and non- beveled). Each group was then divided into two subgroups (n=14) based on the type of composite resin (microfilled and hybrid) used for restoration. After completing restorative procedure, specimens were thermocycled and immersed in 0.5% basic fuchsine. Samples were embedded in polyester and then sectioned both mesiodistally and buccolingually. Dye penetration was observed with a stereomicroscope at 25x magnification. Statistical nonparametric analysis Kruskal-Wallis and Mann-Whitney tests were performed to compare the data (a=0.05). Results There was no statistically significant difference between the two types of composites and two types of enamel margins with respect to microleakage (P>5%). The degree of microleakage at the gingival margin located in dentin of each group was more than that of the enamel margin (P<5%). Conclusion An enamel bevel in a Class V cavity preparation had no effect on the reduction of marginal leakage using either hybrid or microfilled composite resin. Citation Bagheri M, Ghavamnasiri M. Effect of Cavosurface Margin Configuration of Class V Cavity Preparations on Microleakage of Composite Resin Restorations. J Contemp Dent Pract 2008 February; (9)2:122-129.
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Titiyal, Jeewan S., Manpreet Kaur, Farin Shaikh, and Aafreen Bari. "‘Acute-angled bevel’ sign to assess donor lenticule orientation in ultra-thin descemet stripping automated endothelial keratoplasty." BMJ Case Reports 12, no. 2 (February 2019): e227927. http://dx.doi.org/10.1136/bcr-2018-227927.
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A 6.5-year-old boy with congenital hereditary endothelial dystrophy underwent clear corneal ultra-thin descemet stripping automated endothelial keratoplasty (DSAEK). After graft insertion, it was difficult to assess graft orientation due to hazy cornea. Intraoperative optical coherence tomography (iOCT) showed a well-attached graft and the bevelled edge of donor lenticule made an acute angle with the overlying stroma. Postoperative anterior segment OCT confirmed the presence of acute-angled bevel sign. A wetlab experiment was performed with experimental corneoscleral tissues to confirm the findings. Donor lenticule was injected in the artificial chamber with stromal-side up as well as stromal side-down. ‘Acute-angled bevel sign’ was observed on iOCT in the experimental cases with stromal-side up. In inverse graft, the acute-angled bevel was not observed, instead the configuration was obtuse angled. Identifying the ‘acute-angled bevel sign’ on iOCT confirms correct graft orientation after unfolding and is extremely useful for hazy corneas and ultrathin DSAEK lenticules.
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VALENTE, Lisia Lorea, Eliseu Aldrighi MÜNCHOW, Sonia Luque PERALTA, and Niélli Caetano de SOUZA. "Conservative dentistry: non-beveled esthetic restorations in anterior teeth." RGO - Revista Gaúcha de Odontologia 62, no. 4 (December 2014): 443–48. http://dx.doi.org/10.1590/1981-8637201400040000142488.
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The pursuit of esthetic excellence in dentistry today requires dental practitioners to enhance their knowledge and technique in restorations of the anterior teeth. Due to the high incidence and prevalence of fractures in this dental area, mimicking the optical properties and characteristics of the dental structure in young patients (aged 6 to 15 years) is a major challenge. This case report describes the minimally invasive, non-beveled restoration of two fractured anterior teeth (class IV). After diagnosing fractures of teeth 11 and 21 in a 10-year-old patient, a composite mock-up was performed, followed by a diagnostic wax-up. With the aid of a silicon guide, the restorations were prepared without beveling the enamel surface. We performed color stratification by using different types of composite resins. Finally, finishing and polishing procedures were carried out.
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Antonson, Sibel A., A. Ruya Yazici, Zeynep Okte, Patricia Villalta, Donald E. Antonson, and Patrick C. Hardigan. "Effect of resealing on microleakage of resin composite restorations in relationship to margin design and composite type." European Journal of Dentistry 06, no. 04 (October 2012): 389–95. http://dx.doi.org/10.1055/s-0039-1698977.
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ABSTRACTObjective: To determine the relationship between margin preparation design and resin-composite type on microleakage with or without re-application of surface-penetrating sealant.Methods: Class-I resin-composite restorations were completed for 128 extracted human molars. Half of the margins were beveled, the other half, butt-joint. Half of each group was restored with Filtek-Supreme (FS), the other half with Esthet-X (EX) using their respective adhesive systems. Margins were etched and sealed with a surface-penetrating sealant, Fortify. The samples were stored in water 24h, and thermocycled (5,000 cycles, 5°C-55°C). Then, samples were abraded using a toothbrush machine (6,000 strokes). Half of the restorations from each sealant group (n=16) were resealed, and the other half had no further treatment. Thermocycling and tooth brushing were repeated. The samples were sealed with nail polish, immersed in methylene-blue for 8h, sectioned, and magnified digital photographs were taken. Three examiners assessed dye penetration. A 2x2x2 multi-layered Chi-Square analysis, using Cochran-Mantel-Haenszel test was conducted for statistical analysis.Results: No difference was observed between sealed and resealed FS and EX restorations with butt-joint margins. In beveled margins, resealing caused significantly less microleakage (P<.01). No differences were found between restorations either sealed or resealed with bevel margins. In butt-joint margins, at the leakage level deeper than 2/3 of the preparation depth, resealed FS showed less microleakage than EX resealed restorations (P<.01).Conclusion: Resealing reduced microleakage in bevel margins, however, in butt-joint margins resealing did not affect the leakage. A significant statistical relationship exists between and within resealing, margin preparation design, type of composite, and microleakage. (Eur J Dent 2012;6:389-395)
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Wang, J. J., and S. F. Lu. "Effects of leading-edge bevel angle on the aerodynamic forces of a non-slender 50° delta wing." Aeronautical Journal 109, no. 1098 (August 2005): 403–7. http://dx.doi.org/10.1017/s0001924000000828.
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Abstract The aerodynamic performances of a non-slender 50° delta wing with various leading-edge bevels were measured in a low speed wind tunnel. It is found that the delta wing with leading-edge bevelled leeward can improve the maximum lift coefficient and maximum lift to drag ratio, and the stall angle of the wing is also delayed. In comparison with the blunt leading-edge wing, the increment of maximum lift to drag ratio is 200%, 98% and 100% for the wings with relative thickness t/c = 2%, t/c = 6.7% and t/c = 10%, respectively.
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Hess, TA. "The Tucker Technique: The Proximal Hollow Grind to Address a Root Concavity." Operative Dentistry 39, no. 5 (September 1, 2014): 454–59. http://dx.doi.org/10.2341/13-158-t.
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SUMMARY Cast gold inlays have long been used to conservatively restore compromised tooth structure. When the mesial or distal proximal surfaces are indicated for restoration and a cast gold restoration is desired, traditionally a box is prepared with an external bevel. Often a root concavity does not allow for a standard box form or the external and/or internal bevels. A proximal hollow grind can be utilized to address limits of standard inlay or onlay preparation design.
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Popov, Alexander L., and Sergey A. Sadovskiy. "Influence of beam butt face nonparallelism on free damped vibration spectrum of the beam." Vestnik MGSU, no. 5 (May 2019): 538–47. http://dx.doi.org/10.22227/1997-0935.2019.5.538-547.
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Introduction. The free vibration method is widely applied to detecting internal defects in rod and lamellar structural elements. In this work, it is used to diagnose a rod sample defect consisting in nonparallelism of the rod ends. The possibility of identifying a defect in the form of a bevel of one of the rod butts by the frequency spectrum of free damped longitudinal and transverse vibration after impact actions to the rod side or butt face is considered.
Materials and methods. An experimental facility and a method of contact-free recording of the frequency spectrum of the rod natural vibration by its acoustic radiation spectrum are presented. Signs of a defect in the form of a split frequency of the rod transverse vibration are detected. At the same time, the maximum amplitudes of the split frequencies correspond to higher or lower frequencies depending on the face to which the impact is applied. This allows not only determining the presence of a defect in the form of the bevelled butt face, but also establishing its orientation relative to the side rod faces.
Results. An approximate theoretical model is suggested. It explains the effect of frequency splitting in the presence of nonparallelism of the rod butts. For this, the frequency spectra of transverse vibration of two rods with lengths equal to the lengths of the smaller and the larger faces of the original rod with the bevel edge are considered. Experiments show that the differences in the natural frequencies of the bending vibration of these rods, which correspond to the same eigenmodes, are consistent with the differences in the split frequencies of the free damped transverse vibrations of the bevelled-face rod. At this, relationship between the split frequency amplitudes allows determining not only the presence of bevelled face, but also its location.
Conclusions. The application and development of the method through the analysis of the natural vibration spectrum can lead to creation of remote quality control equipment for rod structural elements.
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Zeng, Ke, and Srabanti Chowdhury. "Designing Beveled Edge Termination in GaN Vertical p-i-n Diode-Bevel Angle, Doping, and Passivation." IEEE Transactions on Electron Devices 67, no. 6 (June 2020): 2457–62. http://dx.doi.org/10.1109/ted.2020.2987040.
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Apel, Zuzanna, Behzad Vafaeian, Derek B. Apel, and Ahmed Hussain. "Occlusal stresses in beveled versus non-beveled tooth preparation." Biomedical Engineering Advances 2 (December 2021): 100010. http://dx.doi.org/10.1016/j.bea.2021.100010.
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Stern, Sara. "Porträt Joachim Bevelet." kma - Klinik Management aktuell 13, no. 05 (May 2008): 74–77. http://dx.doi.org/10.1055/s-0036-1574707.
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Um den Job von Joachim Bovelet würden sich gegenwärtig nicht viele reißen. Die kommunale Berliner Klinikkette Vivantes ist trotz jahrelanger Sanierungsbemühungen nach dem zweiten Geschäftsführerwechsel innerhalb eines Jahres von ruhigem Fahrwasser weit entfernt.
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Baraka, Anis, Marwan Rizk, Musa Muallem, Sania Haroun Bizri, and Chakib Ayoub. "Posterior-beveled vs lateral-beveled tracheal tube for fibreoptic intubation." Canadian Journal of Anesthesia/Journal canadien d'anesthésie 49, no. 8 (October 2002): 889–90. http://dx.doi.org/10.1007/bf03017434.
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Jalalian, Ezzatollah, Hamed Jannati, and Maryam Mirzaei. "Evaluating the Effect of a Sloping Shoulder and a Shoulder Bevel on the Marginal Integrity of Porcelain-Fused-to-Metal (PFM) Veneer Crowns." Journal of Contemporary Dental Practice 9, no. 2 (2008): 17–24. http://dx.doi.org/10.5005/jcdp-9-2-17.
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Abstract Aim A porcelain-fused-to-metal (PFM) veneer crown restoration is considered successful when biological, mechanical, and esthetical concerns are satisfied. Restorations with poor marginal integrity may contribute to the cause of severe caries and periodontal defects. The most important factor in achieving successful marginal integrity is preparation design. Although a sloping shoulder preparation offers biologic and esthetic advantages over a shoulder bevel, a comparison of the marginal integrity of these two designs is less clear and is the main focus of this study. Methods and Materials This study was based on the analysis of 40 PFM veneer specimens fabricated on 20 stone dies. Each die had a beveled shoulder on one side of the preparation and a sloping shoulder design on the other. All specimens were selected and managed in an identical manner throughout the entire experimental process. All specimens were fabricated on stone dies made from a standard stainless steel die with the two shoulder designs in the preparation. Marginal integrity of the PFM veneers was evaluated using a scanning electron microscope to measure the gap between the restoration and tooth margin. The data were analyzed using the Student t-test at a significance level of p>0.05. Results An average amount of gap (± SD) for the test groups were as follows: shoulder bevel, 40.78±18.4 microns; sloping shoulder, 52.8±27.4 microns (p>0.05). All the data were within acceptable clinical range and no significant difference between two preparation designs were observed. Conclusions Within the limitations of this study the marginal integrity of both preparation designs were found to be similar. Since the sloping shoulder design offers biological and esthetical advantages over the shoulder bevel, its use is indicated for anterior restorations. Citation Jalalian E, Jannati H, Mirzaei M. Evaluating the Effect of a Sloping Shoulder and a Shoulder Bevel on the Marginal Integrity of Porcelain-Fused-to-Metal (PFM) Veneer Crowns. J Contemp Dent Pract 2008 February;(9)2:017-024.
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Schupp, James R., H. Edwin Winzeler, and Melanie A. Schupp. "Stub Length and Stub Angle Did Not Influence Renewal Shoot Number or Branch Angle of Tall Spindle ‘Gala’/Malling 9 Apple Trees." HortTechnology 29, no. 1 (February 2019): 46–49. http://dx.doi.org/10.21273/horttech04218-18.
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Renewal of limbs by pruning to leave a short, angled, upward-facing stub is common practice for spindle-type apple (Malus ×domestica) training systems. A short, beveled stub cut is thought to stimulate renewal growth from latent buds present underneath the base of the excised branch, and to stimulate smaller, more fruitful renewal limbs with wide crotch angles. We conducted trials over the course of 2 years that involved dormant pruning of ‘Buckeye Gala’ with renewal cuts to compare two stub lengths, 0.5 and 2 cm, and three stub orientations, upward facing, downward facing, and vertical facing, to determine the effects on renewal shoot number, position, angle, and length. We found no clear advantages with either stub length that we evaluated, and there was no improvement in renewal shoot quality with a bevel cut at any orientation. Stub length and stub angle did not influence limb renewal and may be unimportant for training orchard-pruning crews and for machine-learning and robotic pruning.
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Prabhaker, A. R., O. S. Raju, Ameet J. Kurthukoti, and V. Satish. "Evaluation of the Clinical Behavior of Resin Modified Glass Ionomer Cement on Primary Molars: A Comparative One-year Study." Journal of Contemporary Dental Practice 9, no. 2 (2008): 130–37. http://dx.doi.org/10.5005/jcdp-9-2-130.
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Abstract Aim The objectives of the present study were to evaluate and compare the clinical behavior of resin modified glass ionomer cement (RMGIC) on primary molars with conventional and modified cavity preparations. Methods and Materials Forty-two children, 5-9 years of age, having bilateral initial occlusal caries on the mandibular primary second molars were selected for the study. A split mouth design was employed where conventional Class I cavities with a 90° cavosurface angle were prepared randomly on primary second molars on one side and modified cavities with a 1 mm straight bevel along the cavosurface margin on the contra-lateral side. These cavities were restored with RMGIC. The restorations were evaluated during subsequent visits, for a period of one year. Results At the end of one year, 90% of the restorations survived in the conventional cavity group whereas 100% of the restorations survived in the modified cavity group. Conclusion Incorporation of a bevel in Class I cavities increases the survival rate of RMGIC restorations. There was no significant difference in the clinical behavior between the two groups. However, beveling does contribute to long term clinical success of these restorations. Clinical Significance Incorporation of a straight bevel in conventional cavities will improve the retention of RMGIC by increasing the bonding area and enhancing the desired properties of the material. Citation Prabhakar AR, Raju OS, Kurthukoti AJ, Satish V. Evaluation of the Clinical Behavior of Resin Modified Glass Ionomer Cement on Primary Molars: A Comparative One-year Study. J Contemp Dent Pract 2008 February;(9)2:130-137.
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Powers, Russell W., and Dennis K. McLaughlin. "Acoustics measurements of military-style supersonic beveled nozzle jets with interior corrugations." International Journal of Aeroacoustics 16, no. 1-2 (November 30, 2016): 21–43. http://dx.doi.org/10.1177/1475472x16680446.
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Increasingly powerful and noisy military aircraft have generated the need for research leading to the development of supersonic jet noise reduction devices. The hot, high speed supersonic jets exhausting from military aircraft during takeoff present a most challenging problem. The present study extends prior research on two methods of noise reduction. The first is the internal nozzle corrugations pioneered by Seiner et al. and the second is the beveled exit plane explored most recently by Viswanathan. A novel research idea of creating fluidic corrugations similar to the nozzle corrugations has been initiated by Penn State. To further the understanding and analysis of the fluidic corrugations, the present study focuses on the flow field and acoustic field of nozzles with two, three, and six conventional, hardwalled corrugations. The effect of the combination of the internal corrugations with a beveled nozzle is explored. The results show that significant noise reductions of over 3 dB of the mixing noise and the broadband shock-associated noise can be achieved. The combination of the beveled nozzle and the internal nozzle corrugations showed that there is less azimuthal dependence of the acoustic field than for the purely beveled nozzle. The combination nozzle was shown to reduce the noise over a wider range of polar angles and operating conditions than either the purely beveled nozzle or the purely corrugated nozzle.
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Santiago, Maria Donna Damo, and ProsperoMaria Tuano. "Beveled Osteotomies in Lateral Orbitotomy Using a Customized Rotating Bone Saw for Orbital Neoplasms." Craniomaxillofacial Trauma & Reconstruction 8, no. 2 (June 2015): 141–49. http://dx.doi.org/10.1055/s-0034-1393723.
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This study aims to develop a novel method of beveled osteotomy for lateral orbitotomy using a customized 21-mm stainless steel rotating saw in lateral orbitotomy and to evaluate the outcome of a novel beveled osteotomy in lateral orbitotomy. This article presents a case series (19 orbits from 18 patients) of lateral orbitotomies for excision biopsy of orbital neoplasms, over a 10-year period (from September 2001 to October 2011). It is a retrospective observational study. The surgeries were performed under the primary service of one surgeon (M. D. D. S.), the author of this study. All patients were treated via beveled osteotomies in lateral orbitotomy using a stainless steel, 21 mm diameter, customized rotating bone saw. Preoperative and postoperative measurements were tabulated and statistically analyzed. The case series demonstrated that beveled osteotomies in lateral orbitotomy using a stainless steel, 21 mm diameter, customized rotating bone saw was technically possible and provided access to lateral subperiorbital, peripheral, and central surgical spaces. The exposure was ample for excision biopsy of all neoplasms in this study. No patient needed the use of miniplate hardware in repositioning the lateral orbital wall nor complained of a palpable deformity of the lateral orbital wall. The wound healing was rapid, with minimal tissue distortion or scars. There were two patients who developed skin burns, but neither required a cosmetic surgery to correct scarring from the burn. It was concluded that the modified technique of beveled osteotomies in lateral orbitotomy provides excellent access to the lateral subperiorbital, peripheral and central surgical spaces. The exposure was adequate for excision biopsy of all neoplasms in this study. The technique promotes osseous union without the use of miniplate hardware. The use of a stainless steel 21 mm diameter customized rotating bone saw facilitated the successful outcome of the beveled technique.
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Cooney, Thomas F., H. Trey Skinner, and S. M. Angel. "Comparative Study of Some Fiber-Optic Remote Raman Probe Designs. Part II: Tests of Single-Fiber, Lensed, and Flat- and Bevel-Tip Multi-Fiber Probes." Applied Spectroscopy 50, no. 7 (July 1996): 849–60. http://dx.doi.org/10.1366/0003702963905574.
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We compare relative performances of flat-tipped, beveled (two-fiber and six-around-one), and single-lensed focused fiber-optic Raman probes and, where feasible, evaluate the utility of optical filters for reducing fiber background. The sensitivity profile of each probe is determined by measuring the relative intensity of light backscattered off a flat surface as a function of distance from the probe tip. The experimental results are compared with a simple light-cone-overlap model incorporating fiber numerical aperture, fiber and immersion medium refractive indices, separation between excitation and collection fibers, number of fibers, and fiber bevel angle and/or lens focal length. The model and sensitivity profiles are used to interpret the sampling regions for Raman spectra obtained by using each of the probes with a clear, transparent sample (single-crystal sparry calcite), a white, partially transparent sample (acetaminophen tablet), and a set of organic liquids of varying refractive index. The sensitivity of the tested commercial lensed probe drops off symmetrically about the focal point. For both solid samples, the intensity of fiber background follows a profile determined primarily by laser backscattering off the surface, whereas the sample Raman signal follows a profile dependent upon sampling depth.
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Daryabor, Aliyeh, Hassan Saeedi, Mohammad Sadegh Ghasemi, Meria Yazdani, Mohammad Kamali, Hoda Nabavi, Sarah Curran, and Naser Amini. "Influence of heel design in an orthopedic shoe on ground reaction forces during walking." Prosthetics and Orthotics International 40, no. 5 (July 10, 2016): 598–605. http://dx.doi.org/10.1177/0309364615596065.
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Background: One of the treatments prescribed for musculoskeletal patients is orthopedic shoe. The use of an orthopedic shoe is thought to produce a more typical ground reactive force pattern. Objectives: This study was designed to determine the influence of three heel designs of an orthopedic shoe on the ground reaction forces during walking in healthy subjects. Study design: Quasi-experimental. Method: In total, 30 healthy adults (12 males, 18 females) walked at a self-selected pace for six trials in each of the three shoe conditions having three different heels which included the following: standard heel, beveled heel, and positive posterior heel flare. For each trial, ground reaction force parameters were recorded using a force plate. Results: Repeated measures analysis of variance indicated that the impact force was significantly reduced for the positive posterior heel flare condition by 8% and 13% compared with standard and beveled heels, respectively ( p < 0.001). The first peak of vertical force showed a significant reduction in the beveled heel by 5% and 4% compared with the standard heel and the positive posterior heel flare, respectively ( p < 0.001). Loading rate was significantly reduced in the beveled heel and the positive posterior heel flare conditions ( p < 0.05). Conclusion: Positive posterior heel flare reduced impact force due to its geometry flexibility, while a beveled heel reduced first peak of vertical force. The findings of this study show that the shape of the heel therefore has the potential to modify impact loads during walking. Clinical relevance This study provides new evidence that by changing shape in the heel of orthopedic shoe impact loads are reduced during walking. Thus, these findings indicate that use of heel design may be beneficial for various musculoskeletal disorders, including key public health problems.
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Callenbach, Ernest. "Beverle Houston." Film Quarterly 42, no. 1 (1988): 16. http://dx.doi.org/10.2307/1212432.
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Nichols, Beverly. "Beverley Nichols." Chesterton Review 42, no. 1 (2016): 216–17. http://dx.doi.org/10.5840/chesterton2016421/237.
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Callenbach, Ernest. "Beverle Houston." Film Quarterly 42, no. 1 (October 1988): 16. http://dx.doi.org/10.1525/fq.1988.42.1.04a00040.
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Glover, Beverley. "Beverley Glover." Current Biology 28, no. 6 (March 2018): R248—R249. http://dx.doi.org/10.1016/j.cub.2018.02.011.
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Brown, Shelby, Michael Mirmanesh, Ping Song, Demetrius Coombs, David Rengifo, and Lee L. Q. Pu. "Beveled Incisions: What is the Evidence?" Aesthetic Plastic Surgery 42, no. 3 (February 23, 2018): 743–47. http://dx.doi.org/10.1007/s00266-018-1105-2.
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RAFIQUE, Umair, and Sami UD DIN. "Beveled-shaped super-wideband planar antenna." TURKISH JOURNAL OF ELECTRICAL ENGINEERING & COMPUTER SCIENCES 26, no. 5 (September 28, 2018): 2417–25. http://dx.doi.org/10.3906/elk-1803-148.
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Yousif, Omed S. Q., and Moses Karakouzian. "Effect of Corner Shape on Hydraulic Performance of One-Cycle Rectangular Labyrinth Weirs." Fluids 5, no. 3 (July 20, 2020): 117. http://dx.doi.org/10.3390/fluids5030117.
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The hydraulic performance of rectangular labyrinth weirs has been investigated by many researchers, however, the effects of the corner shape on the hydraulic performance of rectangular labyrinth weirs have not been addressed in the current literature. Accordingly, this experimental study aims to explore the effect of the corner shape of on discharge efficiency of rectangular labyrinth weirs. Five flat-crested rectangular labyrinth weirs, with five different corner shapes, were made of High-Density Polyethylene Plastic (HDPE) and tested in a rectangular flume. Under different overflow discharges, the discharge coefficients for the rectangular labyrinth weirs were determined. The results showed that the shape of corners for rectangular labyrinth weirs was an effective factor. For example, rounding or beveling the corners can significantly increase the discharge capacity of the rectangular labyrinth weirs. However, the rounded corner shape was slightly better than the beveled corner shape. Among all labyrinth weir models tested in this study, the rectangular labyrinth weir with a semi-circular apex showed the highest hydraulic efficiency, while the one with an acute-angle corner shape showed the lowest hydraulic efficiency. For the rectangular labyrinth weir having a semi-circular shape, although the original effective length reduced by about 14%, the discharge coefficient, CL, increased by 16.7% on average. For the rectangular labyrinth weir that has an acute-angle corner shape, although the effective length (LC) of the weir increased by 23%, its discharge capacity decreased by 35.2% on average. Accordingly, improper folding of the side-walls of the rectangular labyrinth weir led to a significant reduction in the weir’s hydraulic performance.
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Jiménez-Jiménez, A., A. M. Paniagua-Mercado, A. García-Bórquez, V. M. López-Hirata, A. S. De Ita-De la Torre, E. Miguel-Díaz, and M. L. Saucedo-Muñoz. "Sio2 and Al2O3 nanoparticles effect on the microstructure and mechanical properties of the weld bead joining AISI 1025 steel plates." MRS Advances 3, no. 62 (2018): 3683–94. http://dx.doi.org/10.1557/adv.2018.608.
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AbstractThe purpose of this work is to study the effect of SiO2- and Al2O3-NPs on the microstructure and mechanical properties of the weld bead (WB) created by a process of Submerged Arc Welding (SAW) between two AISI 1025 steel plates. Also it was necessary consider the chemical compositions of slags and burned fluxes, in order to determine the elements that are deposited and contribute in the final microstructure of WB. The welding materials to form each WB were a M12K electrode, a commercial fused flux (CFF) and AISI 1025 steel plates bevelled at 45°. In addition SiO2- or Al2O3-NPs an ethylic alcohol mixture were applied directly to the beveled surfaces, just before the SAW process, which was carried out according to the AWS A5.17 norm. Microstructural and phase changes at the Heat Affected Zone (HAZ) and Welding Zone (WZ) were analysed by metallographic Optical and Scanning Electron Microscopies. The mechanical properties of the WBs were determined through Tensile, Charpy impact and Vickers Hardness tests. By means of metallography of WBs, it was determined that the length of the AF needles increases in 113 and 183 % when adding SiO2- or Al2O3-NPs, respectively. Related to the mechanical properties of the WB, the tensile and yield strength decreases with both additions, SiO2- or Al2O3-NPs. The microhardness at WZ was found to decrease by adding such oxide-NPs. Moreover, the impact energy absorbed by the WBs increases approximately by 83 or 57% due to SiO2- or Al2O3-NPs addition, respectively.
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Dasy, Hiltrud, Andreas Dasy, Greg Asatrian, Noémi Rózsa, Hao-Fu Lee, and Jin Hee Kwak. "Effects of variable attachment shapes and aligner material on aligner retention." Angle Orthodontist 85, no. 6 (February 26, 2015): 934–40. http://dx.doi.org/10.2319/091014-637.1.
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ABSTRACT Objective: To evaluate the retention of four types of aligners on a dental arch with various attachments. Materials and Methods: For this study, three casts were manufactured, two of which contained attachments (ellipsoid and beveled), and one without any attachments to serve as a control. Four types of aligners were thermoformed: Clear-Aligner (CA)-soft, CA-medium, and CA-hard, with various thicknesses, and Essix ACE. Measurements of vertical displacement force during aligner removal were performed with the Gabo Qualimeter Eplexor. Means and standard deviations were next compared between different aligner thicknesses and attachment shapes. Results: CA-soft, CA-medium, and CA-hard did not present a significant increase in retention, except when used in the presence of attachments. Additionally, CA-medium and CA-hard required significantly more force for removal. Essix ACE demonstrated a significant decrease in retention when used with ellipsoid attachments. The force value for Essix ACE removal from the cast with beveled attachments was comparable to that of CA-medium. Forces for aligner removal from the model without attachments showed a linear trend. Essix ACE did not show a continuous increase in retention for each model. Overall, ellipsoid attachments did not present a significant change in retention. In contrast, beveled attachments improved retention. Conclusions: Ellipsoid attachments had no significant influence on the force required for aligner removal and hence on aligner retention. Essix ACE showed significantly less retention than CA-hard on the models with attachments. Furthermore, beveled attachments were observed to increase retention significantly, compared with ellipsoid attachments and when using no attachments.
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Gad, A. M., M. M. Nemat-Alla, A. A. Khalil, and A. M. Nasr. "On the Optimum Groove Geometry for Herringbone Grooved Journal Bearings." Journal of Tribology 128, no. 3 (March 21, 2006): 585–93. http://dx.doi.org/10.1115/1.2197524.
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Recently, herringbone-grooved journal bearings have had important applications in miniature rotating machines. The scribed grooves, on either the rotating or stationary member of the bearing, can pump the lubricant inward, which generates supporting stiffness and improves the dynamic stability, especially for concentric operation. Most of the previous investigations that dealt with herringbone grooved journal bearings and grooved thrust bearings were theoretical. Few experimental attempts for the investigation of the performance characteristics of herringbone grooved journal bearings (HGJBs) and grooved thrust bearings have been done. All these investigations concentrated on rectangular and circular groove profiles of HGJBs. In order to improve the performance characteristics of HGJBs, a new design of the groove profile, the beveled-step groove profile, is introduced. The introduced groove profile is capable of increasing the pressure recovery at the divergence of the flow over the step. In addition, it increases the amount of oil pumped inward over the circular groove profile. Optimization processes were carried out experimentally, in order to obtain the optimal geometry of the introduced groove profile. The optimum geometrical parameters of the groove (groove angle α, groove width ratio β, and groove depth ratio Γ) are 29deg, 0.5, and 2.0, respectively, which give maximum radial force and maximum radial stiffness of the beveled-step HGJB. In order to check the effectiveness of the introduced beveled-step groove profile, the obtained results were compared with that for rectangular groove profile. The comparison shows that the introduced beveled-step HGJBs have higher radial force, higher load carrying capacity, and lower friction torque than the rectangular HGJBs.