Literatura académica sobre el tema "QMiX"
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Artículos de revistas sobre el tema "QMiX"
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Matos, Felipe de Souza, Rayana Duarte Khoury, Cláudio Antonio Talge Carvalho, Frederico Canato Martinho, Eduardo Bresciani y Marcia Carneiro Valera. "Effect of EDTA and QMIX Ultrasonic Activation on the Reduction of Microorganisms and Endotoxins in Ex Vivo Human Root Canals". Brazilian Dental Journal 30, n.º 3 (junio de 2019): 220–26. http://dx.doi.org/10.1590/0103-6440201902470.
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Abstract The present study aimed to compare the effectiveness of QMiX and 17% EDTA associated to passive ultrasonic irrigation (PUI) or manual agitation (MA) on the reduction of E. faecalis, E. coli and LPS from root canals. Forty single rooted human teeth were randomly divided into four groups (n=10), according to the final irrigation protocol: EDTA+MA, QMiX+MA, EDTA+PUI, QMiX+PUI. Sample collections were obtained from the root canal content immediately before preparation (baseline-S1), after instrumentation (S2), after final irrigation protocol (S3) and 7 days after instrumentation and final irrigation (S4). The antimicrobial effectivity and on endotoxin content were analyzed by culture procedure (CFU/mL) and LAL assay (EU/mL), respectively. The results were statistically analyzed by Kruskal-Wallis and Friedman test (α=5%). QMiX+MA and QMiX+PUI reduced 100% of E. coli and E. faecalis bacteria and also prevented E. faecalisregrowth at S4. EDTA significantly reduced E. coli, but it was not effective in reducing E. faecalis. All protocols reduced EU/mL when compared to S1, however at S4 there was a significant reduction of EU/mL only in the QMiX+MA and QMiX+PUI groups in relation to S3 and S2, respectively. Final irrigation with QMiX associated with MA or PUI had superior antibacterial efficacy compared to EDTA, eliminating 100% of E. coli and E. faecalis strains. In addition, QMiX+PUI reduced 97.61% of the initial content of LPS.
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Souza, Matheus Albino, Felipe Trentin Motter, Tobias Pitton Fontana, Marlos Barbosa Ribeiro, Daniela Cristina Miyagaki y Doglas Cecchin. "Influence of ultrasonic activation in association with different final irrigants on intracanal smear layer removal". Brazilian Journal of Oral Sciences 15, n.º 1 (13 de octubre de 2016): 16. http://dx.doi.org/10.20396/bjos.v15i1.8647092.
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Aim: To evaluate the influence of ultrasonic activation (US) with different irrigant regimens in smear layer removal. Methods: One hundred bovine incisors were instrumented and divided into ten groups (n=10) according to final irrigation protocols: distilled water (DW); DW+US; 17% EDTA; QMix; 10% citric acid; 37% phosphoric acid; 17% EDTA+US; QMix+US; 10% citric acid+US; 37% phosphoric acid+US. The samples were then submitted to scanning electron microscopy where a score system was used to evaluate the images and effectiveness of proposed treatments. The data were statistically analyzed by Kruskal-Wallis and Mann-Whitney U tests for intergroup comparisons as well as the Wilcoxon and Friedman tests for intragroup comparisons at 5% significance level. Results: In the cervical third, groups 17% EDTA, QMix, 10% citric acid, 17% EDTA+US, QMix+US and 10% citric acid+US were more effective in smear layer removal (p<0.05); in the middle third, groups 17% EDTA+US and QMix+US were more effective in smear layer removal (p<0.05); in the apical third, groups 17% EDTA,17% EDTA+US and QMix+US were more effective in smear layer removal (p<0.05). Conclusions: US can aid 17% EDTA and QMix in smear layer removal at the middle third and QMix at the apical third, contributing to the cleaning of root canal system.
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Koçak, Mustafa Murat, Sibel Koçak, Baran C. Saġlam y Sevinç A. Türker. "Influence of QMix Irrigant on the Accuracy of Four Different Electronic Apex Locators". International Journal of Experimental Dental Science 5, n.º 1 (2016): 23–27. http://dx.doi.org/10.5005/jp-journals-10029-1118.
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ABSTRACT The aim of this study was to compare the accuracy of four different electronic apex locators in the presence of various irrigation solutions or dry canal condition. Nineteen mandibular incisor teeth were selected. The real working lengths (RWL) of teeth were measured with #15 K-file. The electronic working lengths (EWLs) were measured with Root ZX mini, Raypex 6, iPex II, and Propex II under the condition of dry canal and in the presence of sodium hypochlorite and QMix. The difference between EWL and RWL was calculated. Root ZX mini was more accurate than Propex II under dry condition. No difference was found between the electronic apex locators in the presence of sodium hypochlorite (NaOCl). In the presence of QMix, Propex II and Root ZX mini demonstrated more accurate measurements than iPex II. Root ZX mini was found more accurate under dry condition than in the presence of QMix. Raypex 6 demonstrated more accuracy in the presence of QMix when compared with NaOCl. iPex II showed similar measurements with all tested solutions. Propex II was more accurate in the presence of QMix. All devices can be considered reliable when used with QMix irrigation solution and with any irrigant. How to cite this article Koçak MM, Koçak S, Sa?lam BC, Türker SA. Influence of QMix Irrigant on the Accuracy of Four Different Electronic Apex Locators. Int J Experiment Dent Sci 2016;5(1):23-27.
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Öztekin, Faruk y Özkan Adıgüzel. "The effects of different irrigation agents on root canal dentine micro-hardness and surface roughness". International Dental Research 9, n.º 1 (30 de abril de 2019): 16–21. http://dx.doi.org/10.5577/intdentres.2019.vol9.no1.3.
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Aim: Successful endodontic treatments rely on sufficient mechanical preparation and irrigation of the root canal followed by an adequate three-dimensional filling. This study investigated the changes in root dentine micro-hardness and surface roughness upon treatment with different irrigating agents.
Methodology: A total of 60 human maxillary incisors and canine teeth were used in this study. The crowns of all teeth were decoronated and roots were divided longitudinally. The samples were separated into three groups prior to irrigation. A 5% NaOCl irrigation agent was applied to the first group, a QMix agent was used for the second group, and a 2% CHX agent was used for the third group. All irrigations were performed for 15 minutes. Following irrigation, microstructural and surface-roughness measurements were taken again from all samples.
Results: Micro-hardness was not significantly different between QMix or 5% NaOCl (p>0.05). A significant difference was observed between the QMix- and 2% CHX-treated groups, and between the 5% NaOCl- and QMix-treated groups (p<0.05). A significant difference in surface roughness was observed between the QMix and 2% CHX, and between the 5% NaOCl and QMix (p<0.05). No difference in surface roughness was observed between 5% NaOCl or 2% CHX. The 5% NaOCl and QMix agents reduced the dentine micro-hardness equal to or more than that of the 2% CHX agent. The QMix agent also increased the dentine surface roughness significantly more than the other agents. The 5% NaOCl and 2% CHX agents increased surface roughness equally.
Conclusions: It was seen that all of the irrigation agents used in our study affected dentin microhardness and surface roughness at different rates.
How to cite this article: Öztekin F, Adıgüzel Ö. The effects of different irrigation agents on root canal dentine micro-hardness and surface roughness. Int Dent Res 2019;9(1):16-21.
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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Singh, Gautam, Charul Gupta, Mahesh P. Singh, Kunwar S. Singh y Abhishek Mishra. "Effect of QMix 2 in 1, BioPure MTAD and 17% Ethylenediaminetetraacetic Acid on Microhardness of Root Canal Dentin: An in vitro Study". International Journal of Prosthodontics and Restorative Dentistry 7, n.º 1 (2017): 17–20. http://dx.doi.org/10.5005/jp-journals-10019-1169.
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ABSTRACT Aim To compare the effect of QMix, a mixture of tetracycline, citric acid, and detergent (MTAD), and ethylenediaminetetracetic acid (EDTA) on the microhardness of the root canal dentin. Materials and methods A total of 30 single-rooted teeth were decoronated at 15 mm from the root apex. Root canal instrumen- tation using step back technique was done and the specimens were split into two halves using diamond disc. These were embedded in acrylic blocks and sent for testing by Vickers hard- ness test. The other half of the specimens was divided into four groups. Control group: In this, normal saline was used. Group I: MTAD was used. Group II: 17% EDTA was used. Group IV: QMix 2 in 1 (DENTSPLY) was used. The specimens were immersed in test irrigant for 5 minutes in closed glass plates. The tested specimens were sent for Vickers hardness test under 100 gm load for 15 seconds. The post Vickers hardness number readings were recorded and sent for statistical analysis. Results Data were analyzed using one-way analysis of variance and least significant difference post hoc test was applied for pairwise comparison. QMix showed significantly less reduction in microhardness than EDTA and QMix: Normal saline > QMix>EDTA>MTAD. Conclusion QMix as a root canal irrigant is efficient as it caused least reduction of microhardness of dentin. It has antibacterial properties and is also efficient for smear layer removal. How to cite this article Gupta C, Singh G, Singh MP, Agarwal M, Singh KS, Mishra A. Effect of QMix 2 in 1, BioPure MTAD and 17% Ethylenediaminetetraacetic Acid on Microhardness of Root Canal Dentin: An in vitro Study. Int J Prosthodont Restor Dent 2017;7(1):17-20.
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Arslan, Dilara, Mehmet Burak Guneser, Alper Kustarci, Kursat Er y Seyda Herguner Siso. "Pulp tissue dissolution capacity of QMix 2in1 irrigation solution". European Journal of Dentistry 09, n.º 03 (julio de 2015): 423–27. http://dx.doi.org/10.4103/1305-7456.163229.
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ABSTRACT Objective: The aim of this study was to evaluate the tissue dissolution efficacy of four root canal irrigation solutions (sodium hypochlorite [NaOCl], chlorhexidine gluconate [CHX], Octenidine [OCT], and QMix 2in1) on bovine pulp tissue. Materials and Methods: Fifty bovine pulp tissue samples, each weighing 6.55 mg, were prepared and randomly divided into four experimental groups and one control group (n = 10) according to the dissolution irrigants used: (1) 5.25% NaOCl group; (2) 2% CHX group; (3) OCT group; (4) QMix 2in1 group; and (5) control group (saline solution). These samples were then placed into special bovine dentin reservoir models and immersed for 1 h with each test solution (0.1 mL of each) at room temperature. The pulp samples were then blotted dry and weighed again. The percentage of weight loss was calculated. Statistically analyzed with one-way analysis of variance and post-hoc Tukey tests (P = 0.05). Results: Saline solution did not dissolve the bovine pulp tissue. All groups, except OCT, dissolved pulp samples more effectively than the control group (P < 0.05). The highest tissue dissolution was observed in 5.25% NaOCl group (P < 0.05). No statistically significant difference was found between the tissue-dissolving effect between QMix 2in1 and those of 2% CHX. Conclusions: Within the limitations of this in vitro study, NaOCl exhibited the best tissue-dissolving effect out of all solutions tested. CHX and QMix 2in1 were able to dissolve pulp tissue but less than NaOCl. OCT and saline solutions could not exhibit significantly tissue-dissolving effectiveness. This study shown that QMix 2in1 has little capacity to dissolve pulp tissue therefore used alone is not sufficient for this purpose.
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Lima, Carolina Oliveira de, Fernanda Leal Fonseca de Carvalho, Sandra Rivera Fidel, Celso Neiva Campos, Jefferson Jose de Carvalho Marion, Rivail Antonio Sergio Fidel y Maíra do Prado. "Efeito de diferentes protocolos de irrigação final na remoção da smear layer". Dental Press Endodontics 9, n.º 2 (24 de mayo de 2019): 43–49. http://dx.doi.org/10.14436/2358-2545.9.2.043-049.oar.
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Objetivo: esse estudo avaliou o efeito de protocolos de irrigação final, associados ao uso de EDTA e QMix, na remoção de smear layer. Métodos: foram utilizados 40 dentes humanos com canal único. Os canais foram instrumentados com sistema ProTaper Universal SX-F3. As substâncias químicas utilizadas durante o preparo foram hipoclorito de sódio a 5,25% (NaOCl) ou clorexidina a 2% (CHX) gel. Terminado o preparo, os dentes foram divididos em oito grupos, de acordo com os irrigantes: G1) NaOCl 5,25% + EDTA 17% + NaOCl 5,25%; G2) NaOCl 5,25% + EDTA 17% + água destilada (AD); G3) NaOCl 5,25% + QMix + NaOCl 5,25%; G4) NaOCl 5,25% + QMix + AD; G5) CHX 2% gel + EDTA 17% + CHX 2% solução; G6) CHX 2% gel + EDTA 17% + AD; G7) CHX 2% gel + QMix + CHX 2% solução e G8) CHX 2% gel + QMix + AD. As amostras foram avaliadas por microscopia eletrônica de varredura ambiental, antes e após os protocolos de irrigação final. As imagens foram classificadas por escores, em relação à presença de smear layer, e os dados foram analisados pelos testes de Kruskal-Wallis e de Mann-Whitney. Resultados: o G1 mostrou os melhores resultados em relação à remoção de smear layer (p < 0,05). A CHX gel 2% mostrou menor formação de smear layer, quando comparada ao NaOCl, após o preparo biomecânico; e o NaOCl apresentou melhor limpeza como irrigante final (p < 0,05). Conclusões: o NaOCl como irrigante final, combinado ao EDTA, mostrou melhor capacidade de remoção da smear layer.
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Bjelovic, Ljiljana, Jelena Krunic, Nikola Stojanovic, Jelena Eric y Tatjana Kanjevac. "Evaluation of permeability of root dentin after different irrigation protocols". Srpski arhiv za celokupno lekarstvo 146, n.º 9-10 (2018): 492–97. http://dx.doi.org/10.2298/sarh170731193b.
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Introduction/Objective. This study was aimed at evaluating dentin permeability after irrigation with sodium hypochlorite (NaOCl) and final rinse with chlorhexidine (CHX), ethylenediamine tetraacetic acid (EDTA) + CHX, and new combination products: QMiX or MTAD. Methods. Roots of 60 maxillary incisors were randomly divided into five groups (n = 12) before instrumentation and irrigation with NaOCl according to the final irrigation regimen: CHX (2% CHX), EDTA + CHX (17% EDTA + 2% CHX), QMiX, MTAD, and control group (distilled water). After final irrigation, ten roots of each group were horizontally sectioned and dye penetration was evaluated in the coronal, middle, and apical thirds. Remaining samples were subjected to scanning electron microscopy. Data were analyzed with ANOVA/Tukey?s test. Results. Less dye penetration was found in CHX group compared with control as well as with QMiX and MTAD group in all thirds (p < 0.05). A significant difference between the control and EDTA + CHX, QMiX or MTAD group was observed only in the apical root third (p < 0.05). Conclusion. Dentin permeability was significantly reduced after final irrigation with CHX, but not after use of other final irrigation solutions, except in the apical third of the root canal.
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Kapoor, Sidharth, Naveen Manuja, Seema Chaudhary, Harsimran Kaur, Chaitra TR y Ashish Amit Sinha. "Effect of Qmix and Other Irrigants on Dentin Adhesives in Pulp Chambers of Primary Teeth: SEM Study". Journal of Clinical Pediatric Dentistry 41, n.º 5 (1 de enero de 2017): 363–67. http://dx.doi.org/10.17796/1053-4628-41.5.363.
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Objective: To compare the effect of different endodontic irrigants on microleakage of adhesives used within pulp chamber of primary molars. Study Design: 72 Primary molars were divided into 6 groups, according to 3 irrigants and 2 adhesives used. After de-roofing the pulp chamber, pulp was extirpated. In 36 samples, pulp chambers were bonded with Xeno V+ after irrigation with either QMix (Group1); 17%EDTA+5%NaOCl (Group2) or normal saline (Group3) and in other half samples, pulp chambers were bonded with SinglebondUniversal after irrigation with either QMix (Group 4); 17%EDTA+5% NaOCl (Group5) or normal saline (Group 6). All the samples were restored with Filtek Z350. Ten teeth from each group were assessed for dye penetration. Two samples in each group were viewed under scanning electron microscope. Data was statistically analyzed using Mann–Whitney and Kruskal Wallis tests at a significance level of P < 0.05. Results: Mean microleakage scores were: Group 1-1.5±0.70, Group 2-1.6±.51, Group 3-2.4±0.96, Group 4-1.2±0.42, Group 5-1.2±0.42, Group 6-1.1±0.32. Conclusions: Irrigation with QMix significantly reduced the microleakage of XenoV+ but had no significant effect on microleakage of SinglebondUniversal. Irrigation with EDTA/NaOCl or QMix had no detrimental effect on the sealing ability of either of the adhesive tested.
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Tanomaru-Filho, Mario, Camila Almeida Nascimento, Norberto Batista Faria-Junior, Gisele Faria y Juliane Maria Guerreiro-Tanomaru. "Antimicrobial Activity of Root Canal Irrigants associated with Cetrimide against Biofilm and Planktonic Enterococcus faecalis". Journal of Contemporary Dental Practice 15, n.º 5 (2014): 603–7. http://dx.doi.org/10.5005/jp-journals-10024-1586.
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ABSTRACT Aim To evaluate the antibacterial activity of sodium hypochlorite (NaOCl) and chlorhexidine (CHX) alone or associated with cetrimide (CTR), and QMiX against biofilm and planktonic Enterococcus faecalis (E. faecalis) [American type culture collection (ATCC) 29212]. Materials and methods The solutions 2.5% NaOCl, 2.5% NaOCl + 0.2% CTR, 2% CHX, 2% CHX + 0.2% CTR, 0.2% CTR, and QMiX were evaluated. E. faecalis biofilms were induced for 14 days on bovine dentin blocks. The irrigants were evaluated after contact with E. faecalis suspension and biofilm for 1 and 3 minutes. After that, serial decimal dilutions were made and plated on tryptic soy agar (TSA) medium. Plates were incubated for 24 hours at 37°C and the colony-forming unit (CFU) 1 ml was determined. Data were subjected to ANOVA and Tukey's tests at 5% significance. Results All microorganisms were eliminated by direct contact of the irrigants with planktonic cells. Only NaOCl and NaOCl + CTR were able to completely eliminate the microorganisms by direct contact with E. faecalis biofilm. CHX presented effectiveness similar to CHX + CTR CTR, and QMiX after 1 minute of contact and similar to NaOCl and NaOCl + CTR after 3 minutes (p > 0.05), but was unable to completely eliminate the microorganisms. CTR and QMiX did not differ from each other. Conclusion CTR addition to CHX and NaOCl solutions did not improve the antimicrobial activity against biofilm. All evaluated irrigants and associations presented activity against planktonic E. faecalis. Only NaOCl and NaOCl + CTR eliminated biofilm after 1 and 3 minutes of direct contact. Clinical relevance Addition of CTR does not modify the antibiofilm effectiveness of CHX and NaOCl. How to cite this article Nascimento CA, Tanomaru-Filho M, Faria-Junior NB, Faria G, Guerreiro-Tanomaru JM. Antimicrobial Activity of Root Canal Irrigants associated with Cetrimide against Biofilm and Planktonic Enterococcus Faecalis. J Contemp Dent Pract 2014;15(5):603-607.
Tesis sobre el tema "QMiX"
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Gründling, Grasiela Sabrina Longhi. "QMIX: ação sobre endotoxina bacteriana e efeito da combinação com hipoclorito de sódio sobre as paredes do canal radicular". Pontifícia Universidade Católica do Rio Grande do Sul, 2014. http://hdl.handle.net/10923/6926.
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Previous issue date: 2014This thesis had the purpose to evaluate the action of a new irrigant, QMix, on bacterial endotoxins as well as the effect of its combination with sodium hypochlorite on the root canal walls. Having the main purpose to evaluate its action on bacterial endotoxins, 50 extracted human teeth were contaminated in vitro with endotoxins and irrigated with QMix, EDTA, chlorhexidine (CHX) and sodium hypochlorite (NaOCl). It was used a Limulus Amebocyte Lysate (LAL) assay to quantify the remaining endotoxins after the irrigation. The results of this first study showed that QMix reduced the endotoxins level when compared to the other irrigant solutions that were tested. The second study from this thesis had the purpose to observe in scanning electron microscopy (SEM) the formation of precipitate on the root canal walls due to the concomitant use of NaOCl and QMix. The results from this study showed that despite the presence of CHX in the composition of QMix, its use after the chemical mechanical preparation of the canal with NaOCl did not result in the formation of a precipitate on the root canal walls. On the contrary, the images in SEM showed clean walls with exposed dentinal tubules. Once it is a new product there are still few studies about QMix. Although, according to the results presented on this study, it can be concluded that QMix is effective on the elimination of bacterial endotoxins from the root canal, not showing any precipitate formation when used concomitantly with NaOCl.
Este trabalho teve o objetivo de avaliar a ação de um novo irrigante, o QMix, sobre endotoxinas bacterianas, bem como o efeito da sua combinação com hipoclorito de sódio sobre as paredes do canal radicular. Com a finalidade de avaliar sua ação sobre endotoxinas bacterianas, 50 dentes humanos extraídos foram contaminados in vitro com endotoxinas, e preenchidos com QMix, EDTA, clorexidina (CHX) e hipoclorito de sódio (NaOCl). Foi utilizado um teste de Lisado de Amebócito de Limulus (LAL) para quantificação de endotoxinas remanescentes após a irrigação. Os resultados deste primeiro estudo demonstraram que o QMix reduziu os níveis de endotoxinas quando comparado com as outras soluções irrigadoras testadas. O segundo estudo da presente tese teve o propósito de observar em Microscopia Eletrônica de Varredura (MEV) a formação de precipitado sobre as paredes do canal decorrente do uso concomitante de NaOCl e QMix. Os resultados deste estudo demonstraram que, apesar da presença de CHX na composição do QMix, seu uso após o preparo químico mecânico do canal com NaOCl não resultou na formação de precipitado sobre as paredes do canal. Muito pelo contrário, as imagens em MEV apresentaram paredes limpas com túbulos dentinários expostos. Por se tratar de um produto novo, ainda existem poucos estudos sobre o QMix. Porém, de acordo com os resultados apresentados neste trabalho, pode-se concluir que o QMix é eficaz na eliminação de endotoxinas bacterianas do interior do canal radicular, e seu uso concomitante com NaOCl não resulta na formação de precipitado sobre as paredes do canal.
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Gr?ndling, Grasiela Sabrina Longhi. "QMIX : a??o sobre endotoxina bacteriana e efeito da combina??o com hipoclorito de s?dio sobre as paredes do canal radicular". Pontif?cia Universidade Cat?lica do Rio Grande do Sul, 2014. http://tede2.pucrs.br/tede2/handle/tede/1273.
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Previous issue date: 2014-09-22This thesis had the purpose to evaluate the action of a new irrigant, QMix, on bacterial endotoxins as well as the effect of its combination with sodium hypochlorite on the root canal walls. Having the main purpose to evaluate its action on bacterial endotoxins, 50 extracted human teeth were contaminated in vitro with endotoxins and irrigated with QMix, EDTA, chlorhexidine (CHX) and sodium hypochlorite (NaOCl). It was used a Limulus Amebocyte Lysate (LAL) assay to quantify the remaining endotoxins after the irrigation. The results of this first study showed that QMix reduced the endotoxins level when compared to the other irrigant solutions that were tested. The second study from this thesis had the purpose to observe in scanning electron microscopy (SEM) the formation of precipitate on the root canal walls due to the concomitant use of NaOCl and QMix. The results from this study showed that despite the presence of CHX in the composition of QMix, its use after the chemical mechanical preparation of the canal with NaOCl did not result in the formation of a precipitate on the root canal walls. On the contrary, the images in SEM showed clean walls with exposed dentinal tubules. Once it is a new product there are still few studies about QMix. Although, according to the results presented on this study, it can be concluded that QMix is effective on the elimination of bacterial endotoxins from the root canal, not showing any precipitate formation when used concomitantly with NaOCl.
Este trabalho teve o objetivo de avaliar a a??o de um novo irrigante, o QMix, sobre endotoxinas bacterianas, bem como o efeito da sua combina??o com hipoclorito de s?dio sobre as paredes do canal radicular. Com a finalidade de avaliar sua a??o sobre endotoxinas bacterianas, 50 dentes humanos extra?dos foram contaminados in vitro com endotoxinas, e preenchidos com QMix, EDTA, clorexidina (CHX) e hipoclorito de s?dio (NaOCl). Foi utilizado um teste de Lisado de Ameb?cito de Limulus (LAL) para quantifica??o de endotoxinas remanescentes ap?s a irriga??o. Os resultados deste primeiro estudo demonstraram que o QMix reduziu os n?veis de endotoxinas quando comparado com as outras solu??es irrigadoras testadas. O segundo estudo da presente tese teve o prop?sito de observar em Microscopia Eletr?nica de Varredura (MEV) a forma??o de precipitado sobre as paredes do canal decorrente do uso concomitante de NaOCl e QMix. Os resultados deste estudo demonstraram que, apesar da presen?a de CHX na composi??o do QMix, seu uso ap?s o preparo qu?mico mec?nico do canal com NaOCl n?o resultou na forma??o de precipitado sobre as paredes do canal. Muito pelo contr?rio, as imagens em MEV apresentaram paredes limpas com t?bulos dentin?rios expostos. Por se tratar de um produto novo, ainda existem poucos estudos sobre o QMix. Por?m, de acordo com os resultados apresentados neste trabalho, pode-se concluir que o QMix ? eficaz na elimina??o de endotoxinas bacterianas do interior do canal radicular, e seu uso concomitante com NaOCl n?o resulta na forma??o de precipitado sobre as paredes do canal.
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Baldasso, Flávia Emi Razera. "Efeito do hipoclorito de sódio 2,5%, EDTA 17%, ácido cítrico 10%, ácido peracético 1% e QMIX na microdureza e na estrutura da dentina radicular". reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2015. http://hdl.handle.net/10183/128205.
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Objetivo: Avaliar os efeitos das soluções QMiX, EDTA 17%, ácido cítrico 10% (AC), ácido peracético 1% (AP), associados à irrigação final com NaOCl 2,5%, na microdureza dentinária, e seus efeitos nos componentes orgânicos, inorgânicos e na erosão da dentina das paredes do canal radicular. Métodos: Sessenta raízes de incisivos inferiores humanos foram usadas neste estudo. Os canais foram preparados sob irrigação com água destilada e as amostras foram divididas aleatoriamente em 6 grupos (n=10): QMiX, EDTA, AC, AP, NaOCl (solução controle) e água destilada (controle negativo). Após a irrigação com as soluções quelantes, uma irrigação final com NaOCl 2,5% foi realizada. Antes e depois dos protocolos de irrigação, as amostras foram submetidas ao Teste de Microdureza de Knoop. Três endentações foram feitas na distância de 100μm e 500μm do lúmen do canal radicular. Os dados da microdureza de cada grupo, em cada distância, antes e após os protolocos de irrigação foram comparados pelo teste de Wilcoxon (α = 0,05). Para a comparação da diferença da microdureza entre os grupos foi utilizado o teste de Kruskall-Wallis, seguido pelo teste de Dunn (α = 0,05). Concluída a análise da microdureza, as amostras foram seccionadas longitudinalmente em duas metades: uma foi desingada para análise de seu componente orgânico (colágeno) em microscopia óptica de luz polarizada (MO) e a outra para análise de seu componente inorgânico e erosão em microscopia eletrônica de varredura (MEV). Os dados obtidos pela análise em MO e em MEV foram submetidos ao teste de Kruskall- Wallis, seguido pelo teste de Dunn (α = 0,05). Resultados: Na profundidade de 100μm, todos os protocolos reduziram significativamente a microdureza (P<0,05), enquanto em 500μm, isso ocorreu apenas nos grupos EDTA e QMiX (P<0,05). AC foi o grupo que mais causou erosão nos túbulos dentinários, seguido do AP e do EDTA. QMiX abriu os túbulos, mas não causou erosão dentinária. Em relação à análise do componente orgânico e inorgânico da dentina, os grupos NaOCl e água destilada mostraram uniformidade na rede de colágeno e presença de smear layer obliterando os túbulos dentináros, enquanto o grupo AC apresentou alteração nos componentes orgânicos e inorgânicos. O grupo EDTA não mostrou diferença significativa em relação à alteração no componente orgânico, mas alterou a estrutura inorgânica. Os grupos QMiX e AP não causaram alteração significativa no colágeno e removeram a smear layer sem causar alteração no conteúdo inorgânico, quando os túbulos foram avaliados no sentido longitudinal. Conclusões: Os protocolos de irrigação dos grupos do QMiX e do EDTA 17% apresentaram maior redução da microdureza dentinária em 500μm, sendo que o do QMiX não causou erosão dentinária. As soluções QMiX e AP, seguidas por NaOCl 2,5%, mostraram melhor comportamento em relação às outras soluções testadas, preservando os componentes orgânicos e inorgânicos da dentina radicular humana.Aim: The present study aimed to evaluate the effect of QMiX, 17% EDTA, 10% citric acid (CA), 1% peracetic acid (PA), associated with a final irrigation with 2.5% NaOCl, on dentin microhardness, and their effects on organic components, inorganic components and erosion of the root canal dentin. Methods: Sixty human mandibular incisors roots were used in this study. The root canals were instrumented under irrigation with destilled water and the samples were randomly divided into 6 groups (n = 10): QMiX, EDTA, CA, PA, NaOCl (control solution) and distilled water (negative control). After the use of chelating solutions, a final irrigation with 2.5% NaOCl was used. Before and after irrigation protocols, dentin microhardness was measured with a Knoop indenter. Three indentations were made at 100μm and 500μm from the root canal lumen. Microhardness data of each group, at each distance, before and after irrigation protocols were compared by Wilcoxon’s test (α = 0.05). Kruskall-Wallis’s test, followed by Dunn’s test, was applied for comparison among groups considering the microhardness difference at each distance. The specimens were longitudinally split and one half of it was designated for organic structure analysis by polarized light microscopy (PLM) and the other for inorganic structure analysis by scanning electron microscopy (SEM) analysis. The data obtained by the analyses in PLM and SEM were submitted to the Kruskal-Wallis test, followed by Dunn's test (α = 0.05). Results: At the depth of 100μm, all protocols significantly reduced microhardness (P <0.05); while in 500μm, it occurred only in EDTA and QMiX groups (P <0.05). CA was the group that caused more erosion in the dentinal tubules, followed by PA and EDTA. QMiX opened the tubules, but did not cause dentin erosion. Regarding the analysis of organic and inorganic dentin components, NaOCl and distilled water groups showed uniformity in the collagen network and presence of smear layer obliterating the dentinal tubules, while CA group showed changes in organic and inorganic components. EDTA group did not show significant difference in the organic component alteration, but changed the inorganic structure. QMiX and PA groups did not cause significant modification in collagen and removed the smear layer without causing change in the inorganic component, when the tubules were evaluated in longitudinal direction. Conclusion: QMiX and 17% EDTA protocols presented the greatest microhardness reduction at 500μm and QMiX did not cause dentin erosion. QMiX and PA solutions, followed by 2.5% NaOCl, showed better behavior from the others chelating agents tested, when used as final irrigation, preserving organic and inorganic components (tubules analyzed longitudinally) of human root dentin.
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Machado, Sandra Cristina Poleri. "Efeitos provocados pelos irrigantes endodônticos na estrutura do canal radicular". Master's thesis, [s.n.], 2015. http://hdl.handle.net/10284/5228.
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Projeto de Pós-Graduação/Dissertação apresentado à Universidade Fernando Pessoa como parte dos requisitos para obtenção do grau de Mestre em Medicina DentáriaA Endodontia está focada no estudo das lesões da polpa dentária e da região periapical, bem como na sua prevenção e tratamento. O tratamento endodôntico (TE) baseia-se na desinfeção e na erradicação dos microorganismos do sistema de canais radiculares (SCR) através de processos de instrumentação e irrigação. O principal intento da instrumentação é o desbridamento mecânico do sistema de canais radiculares e a criação de um espaço adequado para que as substâncias antimicrobianas, denominadas irrigantes, consigam penetrar nessa rede de canais. São diversas as soluções irrigantes utilizadas em endodontia e todas elas têm sido objeto de estudo para diferentes autores, no sentido de se conseguir entender duma melhor forma as suas propriedades, os seus mecanismos de ação, as vantagens e desvantagens das suas combinações, entre outros aspetos, durante o preparo químico-mecânico. O objetivo desta revisão bibliográfica foi a pesquisa sobre os efeitos provocados pelos irrigantes endodônticos na estrutura do canal radicular. Para tal, realizou-se uma pesquisa bibliográfica baseada principalmente nos principais irrigantes endodônticos, nomeadamente o hipoclorito de sódio (NaOCl), a clorhexidina (CHX), o ácido etilenoamino tetra-acético (EDTA) e o ácido cítrico, bem como a associação entre os mesmos, os seus efeitos provocados na dentina e as consequências da utilização dos mesmos na adesão de materiais à dentina durante a obturação. Após a pesquisa efetuada, concluiu-se que o NaOCl, o EDTA e o ácido cítrico provocam desmineralização dentinária, alterando a microdureza da dentina e tornando o dente mais frágil. No entanto, essa diminuição na dureza também ajuda na instrumentação e no alargamento do canal. O EDTA e o ácido cítrico, devido à capacidade de remoção da smear layer que lhes é conferida, provocam um aumento da rugosidade na superfície. E a clorhexidina, apesar de não provocar qualquer desmineralização, ao ser conjugada com o NaOCl, origina um precipitado que vai interferir no selamento dos canais radiculares.
Endodontics is based on the study of apical periodontitis and on the periapical region, as well as in their prevention and treatment. The nonsurgical endodontic therapy is based on the disinfection of the root canal system and in the eradication of microorganisms through instrumentation and irrigation processes. The main purpose of instrumentation is the mechanical debridement of the root canal system and the creating of a suitable space for antimicrobial agents, called irrigants, to penetrate this canals network. There are several irrigation solutions used in endodontics and all of them have been studied by diferente authors, in order to achieve a better understanding of their mechanisms of action, the advantages and disadvantages of their combinations, among others, during the chemical-mechanical preparation. The purpose of the literature review was the research of the effects caused by endodontic irrigants on root canal structure. So, it was made a literature research based mostly on the main endodontic irrigants, such as sodium hypochlorite (NaOCl), chlorhexidine (CHX), etilenoamino tetraacetic acid (EDTA) and citric acid, as well as the association between them, the effects caused on dentin and the consequences of using them in the materials adhesion to the dentin during filling. After the review, it was concluded that NaOCl, EDTA and citric acid causes dentin demineralization, changing the dentin microhardness, making the tooth more fragile. However, this reduction in dentin hardness also helps the instrumentation and the enlargement of the canal. Both EDTA and citric acid, due to the removal of the smear layer, increased the surface roughness. The chlorhexidine, despite not causing any demineralization, when combined with NaOCl, creates a precipitate which will interfere with the sealing of the root canal.
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Kricke, Alexander. "Quasi-monolithische Integrationstechnologie (QMIT) für High-Power-Anwendungen im Mikrowellenbereich /". Kassel : Kassel Univ. Press, 2009. http://d-nb.info/995862222/04.
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Kricke, Alexander [Verfasser]. "Quasi-monolithische Integrationstechnologie (QMIT) für High-Power-Anwendungen im Mikrowellenbereich / Alexander Kricke". Kassel : Kassel University Press, 2009. http://d-nb.info/1007194391/34.
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Wipplinger, Eduard. "Marketingová strategie Centra zdravotní prevence". Master's thesis, Vysoká škola ekonomická v Praze, 2011. http://www.nusl.cz/ntk/nusl-113273.
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The diploma thesis is focused on the marketing strategy of QMI's Health prevention center. The aim of the study is to make a situation analysis, through its own research to assess consumer attitudes to health and health care, evaluate opportunities and threats arising from the marketing environment and to define on the basis of the results achieved for the development strategy of health prevention centers. The theoretical part deals with theoretical background of strategic marketing, its specifics in the health care, marketing environmental analysis, market and consumer decision-making motives. It describes the legislative framework and the importance of health prevention in public health care. The practical part presents the concept and mission of the QMI's Health prevention center. It deals with the survey of consumer attitudes, application of theoretical knowledge in situation analysis and attempts to explain the current strengths, weaknesses, opportunities and threats arising from the marketing environment. The main contribution of the thesis is a detailed situation analysis, application of knowledge gained from research and defining the marketing strategy for the development of Health prevention center.
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Hussain, Kashif. "Comprendre le rôle de l'information et de la communication dans le passage des techniques de gestion industrielle à une culture de la qualité : QMI (Implémentation du Management Qualité) dans trois entreprises multinationales". Valenciennes, 2008. http://ged.univ-valenciennes.fr/nuxeo/site/esupversions/f78f671b-9619-4e37-a98f-fb11b625b95a.
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Force est de constater que le rôle de la communication est souvent délaissé dans les programmes de management de la qualité en industrie, et ce malgré un discours prônant l'importance des échanges interpersonnels. L’objectif de cette recherche est de proposer un modèle qui met l’accent sur la mise en place du management de la qualité et s’inscrit étroitement dans un dispositif communicationnel. Pour ce faire, une approche semi-qualitative examine, à partir de plusieurs cas d’études, la manière dont trois organisations multinationales ont mis en place leurs systèmes qualité. L’étude fait ressortir les deux constats clés suivants. Premièrement, les procédures qualité sont sous-appliquées dans la pratique quotidienne du personnel de l’entreprise. Deuxièmement, ces procédures s’avèrent, néanmoins, utiles lorsque les employés doivent préparer l’entreprise à des audits qualité. Face à ce constat, le défi à l’égard du concept de QMI (Quality Management Implementation, c’est-à-dire le processus d’accompagnement du changement) est double ; nécessité d'adapter le management de la qualité à un contexte évolutif donné, ce qui exige l’ajustement continu des relations entre la direction et les employés - de manière à aider ces derniers à s'intégrer, comme catalyseur du changement, dans le système qualité de façon quotidienne. En conclusion, le modèle de QMI développé offre un cadre à l'implémentation ; il permet de gérer de manière plus pertinente les normes de qualité, dont la mise en place est indissociable de la communication aux moments opportuns dans l'environnement industrielDespite declarations about the importance of interpersonal exchanges, one can but note the neglected role of communication in industrial quality management programs. Given this, the thesis puts forward a model that focuses on Quality Management Implementation (QMI) as a response to this apparent neglect. To do this, the research adopts a semi-qualitative, case study approach in examining the way in which three multinational organizations implement quality management practices. The results highlight two key observations. Firstly, employees of the organizations under-apply quality procedures in their everyday use. Secondly, these procedures appear useful when employees have to prepare for quality audits. In this light, a twofold challenge emerges concerning the concept of QMI, i. E. The change process. On the one hand, there is the necessity for adapting quality management to a continually evolving industrial context. On the other hand, it is vital that management-employees relations be constantly adjusted to integrate employees in daily quality related operations as catalyst of change. In short, the proposed QMI model of this study offers an alternative way to manage quality standards as being connected to timely communication within the industrial context
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Niu, Yi Shuai. "Programmation DC et DCA en optimisation combinatoire et optimisation polynomiale via les techniques de SDP : codes et simulations numériques". Phd thesis, INSA de Rouen, 2010. http://tel.archives-ouvertes.fr/tel-00557911.
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L'objectif de cette thèse porte sur des recherches théoriques et algorithmiques d'optimisation locale et globale via les techniques de programmation DC & DCA, Séparation et Evaluation (SE) ainsi que les techniques de relaxation DC/SDP, pour résoudre plusieurs types de problèmes d'optimisation non convexe (notamment en Optimisation Combinatoire et Optimisation Polynomiale). La thèse comporte quatre parties :La première partie présente les outils fondamentaux et les techniques essentielles en programmation DC & l'Algorithme DC (DCA), ainsi que les techniques de relaxation SDP, et les méthodes de séparation et évaluation (SE).Dans la deuxième partie, nous nous intéressons à la résolution de problèmes de programmation quadratique et linéaire mixte en variables entières. Nous proposons de nouvelles approches locales et globales basées sur DCA, SE et SDP. L'implémentation de logiciel et des simulations numériques sont aussi étudiées.La troisième partie explore des approches de la programmation DC & DCA en les combinant aux techniques SE et SDP pour la résolution locale et globale de programmes polynomiaux. Le programme polynomial avec des fonctions polynomiales homogènes et son application à la gestion de portefeuille avec moments d'ordre supérieur en optimisation financière ont été discutés de manière approfondie dans cette partie.Enfin, nous étudions dans la dernière partie un programme d'optimisation sous contraintes de type matrices semi-définies via nos approches de la programmation DC. Nous nous consacrons à la résolution du problème de réalisabilité des contraintes BMI et QMI en contrôle optimal.L'ensemble de ces travaux a été implémenté avec MATLAB, C/C++ ... nous permettant de confirmer l'utilisation pratique et d'enrichir nos travaux de recherche.
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Maass, Petra. "The cultural context of biodiversity conservation". Doctoral thesis, Göttingen Univ.-Verl. Göttingen, 2007. http://hdl.handle.net/11858/00-1735-0000-000D-F23A-C.
Texto completoLibros sobre el tema "QMiX"
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Schwabl, Franz. Quantenmechanik (QMI). Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-662-22375-8.
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Institute, Quality Management. Registration program: Manual checklist for the hardware & process product sectors : ISO 9003-1994 : QMI, a division of CSA. [Toronto?: Canadian Standards Association?], 1994.
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Ludwig, Malte, Berndt Birkner, Franziska Diel y Bernhard Gibis. Qualitätsmanagement Innere Medizin (QMI). Springer, 2007.
Buscar texto completoCapítulos de libros sobre el tema "QMiX"
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Niu, Yi-Shuai y Tao Pham Dinh. "DC Programming Approaches for BMI and QMI Feasibility Problems". En Advanced Computational Methods for Knowledge Engineering, 37–63. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-06569-4_3.
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"H Q Qmax Q Qmoy Qmoy t". En Hydrology, 103–4. CRC Press, 2010. http://dx.doi.org/10.1201/b10426-23.
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Mazars, Emmanuel, Zhenhai Li y Imad M. Jaimoukha. "A QMI Approach to the Robust Fault Detection and Isolation Problem". En Fault Detection, Supervision and Safety of Technical Processes 2006, 1222–27. Elsevier, 2007. http://dx.doi.org/10.1016/b978-008044485-7/50206-2.
Texto completoActas de conferencias sobre el tema "QMiX"
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Liao, Liangchuang y Yang-Yang Chen. "QMIX Algorithm for Coordinated Welding of Multiple Robots". En 2021 6th International Conference on Automation, Control and Robotics Engineering (CACRE). IEEE, 2021. http://dx.doi.org/10.1109/cacre52464.2021.9501350.
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Fang, Xingchen, Peng Cui y Qingling Wang. "Multiple agents cooperative control based on QMIX algorithm in SC2LE environment". En 2020 7th International Conference on Information, Cybernetics, and Computational Social Systems (ICCSS). IEEE, 2020. http://dx.doi.org/10.1109/iccss52145.2020.9336865.
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Sankaran, Subramanian, Jeffrey S. Allen y Leonard Gumennik. "Electric Field Effects on the Stability of Vapor Microlayers: Enhancement of Heat Transfer". En ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-42974.
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The effect of dc electric fields on destabilization of a vapor microlayer formed during film boiling at various subcooling levels is investigated. High voltage electric fields up to 2000 volts were applied between a 127 μm heater wire and a screen electrode that is concentrically placed at a radius of 25 mm. The qmax and qmin heat fluxes were also measured for the various subcooling and electric field strengths. Up to 50% increase in the qmax and the qmin heat fluxes were observed when using the electric fields in this range of experimental parameters. The relationship among subcooling level for a given fluid, the heat flux level, and the electric field strength required to reach the qmin condition is of interest. The preliminary experimental results and the bubble departure and transition boiling patterns resulting from destabilization of the vapor microlayer are discussed.
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Mobinipouya, Mohammad Reza. "Two Target Parameters, the Heat Transfer Qmix/B and the Drag Force Fdmix/C are Susceptible to the Molar Gas Composition W of the Six Gas–Gas Mixtures in the W-Domain [0, 1]". En ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting collocated with 8th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2010. http://dx.doi.org/10.1115/fedsm-icnmm2010-30924.
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This paper addresses the laminar boundary layer flow of selected binary gas mixtures along a heated flat plate. To form the binary gas mixtures, light helium (He) is the primary gas and the heavier secondary gases are nitrogen (N2), oxygen (O2), xenon (Xe), carbon dioxide (CO2), methane (CH4), tetrafluoromethane (CF4) and sulfur hexafluoride (SF6). The central objective in the work is to investigate the potential of this group of binary gas mixtures for heat transfer intensification. From fluid physics, two thermophysical properties: viscosity η and density ρ influence the fluid flow, whereas four thermophysical properties: viscosity η, thermal conductivity λ, density ρ, and heat capacity at constant pressure Cp affect the forced convective heat transfer. The heat transfer augmentation from the flat plate is pursued by stimulating the forced convection mode as a whole. In this regard, it became necessary to construct a specific correlation equation to handle binary gas mixtures owing Prandtl number Pr ∈ (0.1, 1). The rate of heat transfer Q between a heated plate and a cold fluid is calculated with: Qmix/B=λmix0.623ρmix0.500Cp,mix0.377ηmix0.123(1) If the surface area of the plate A and the temperature difference Tw–T∞ are specified, the only possible way for intensifying the rate of heat transfer Q is by enlarging the magnitude of the average heat transfer coefficient h. This is precisely the main goal to be pursued in the present paper. The average heat transfer coefficient h in laminar boundary layer flows of incompressible, viscous fluids along heated flat plates depends on the dimensionless fluid temperature gradient at the plate θ′(0). It is given by the Prandtl number function f (Pr).
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Li, Feiping, Stephen Smith y Wooyoung Kim. "VIA-QMI: A visualized data analytic tool for Quantitative Multiplex Co-Immunoprecipitation(QMI) Platform". En 2018 IEEE International Conference on Bioinformatics and Biomedicine (BIBM). IEEE, 2018. http://dx.doi.org/10.1109/bibm.2018.8621312.
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Joodaki, M., A. Kricke, H. Hillmer y G. Kompa. "Interconnects Analyses in Quasi-Monolithic Integration Technology (QMIT)". En IEEE 15th Topical Meeting on Electrical Performance of Electronic Packaging. IEEE, 2006. http://dx.doi.org/10.1109/epep.2006.321236.
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Prohaska, Stevan, Aleksandra Ilić y Pavla Pekarova. "ASSESSMENT OF STATISTICAL SIGNIFICANCE OF HISTORIC DANUBE FLOODS". En XXVII Conference of the Danubian Countries on Hydrological Forecasting and Hydrological Bases of Water Management. Nika-Tsentr, 2020. http://dx.doi.org/10.15407/uhmi.conference.01.05.
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Data on historic floods along the Danube River exist since the year 1012. In the Middle Ages, floods were estimated based on historical documents, including original handwritten notes, newspaper articles, chronicles, formal letters, books, maps and photographs. From 1500 until the beginning of organized water regime observations, floods were hydraulically reconstructed based on water marks on old buildings in cities along the Danube (Passau, Melk, Emmersdorf an der Donau, Spilz, Schonbuhen and Bratislava). The paper presents a procedure for assessing the statistical significance of registered historic floods using a comprehensive method for defining theoretical flood hydrographs at hydrological stations. The approach is based on correlation analysis of two basic flood hydrograph parameters – maximum hydrograph ordinate (peak) and flood wave volume. The PROIL model is used to define the probability of simultaneous occurrence of these parameters. It defines the exceedance probability of two random variables, in the specific case two hydrograph parameters of the form: P{Qmax more equal to qmax,p)∩(Wmax more equal to wmax,p)} = P (1) where: Qmax – maximum hydrograph ordinate (peak); qmax,p – maximum discharge of the probability of occurrence p; Wmax – maximum hydrograph volume; wmax,p – maximum flood wave volume of the probability of occurrence p; P – exceedance probability. Spatial positions of the lines of exceedance of two flood hydrograph parameters and the empirical points of the corresponding parameters of the considered historic flood in the correlation field Qmax - Wmax, allow direct assessment of the exceedance probability of a historic flood, or its statistical significance. The proposed procedure was applied in practice to assess the statistical significance of the biggest floods registered along the Danube in the sector from its mouth to the Djerdap 1 Dam. The linear trend in the time-series of maximum annual flows at a representative hydrological station and the frequency of historic floods in the considered sector of the Danube are discussed at the end of the paper.
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Chan, Yao-Chen y Wei-Keng Lin. "A Novel Quick Qmax Test Method and Experimental Investigation of Heat Pipes". En ASME 2005 Summer Heat Transfer Conference collocated with the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems. ASMEDC, 2005. http://dx.doi.org/10.1115/ht2005-72379.
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In traditional heat pipe performance test, to keep an adiabatic temperature at a constant value, the evaporator wall temperature would be slowly increased when the thermal power was step input to the evaporator of the heat pipe. The maximum heat transfer rate (Qmax) was then defined that when the evaporator wall temperature rapidly increased at a certain amount of power input to the heat pipe. However, it is not easy to distinguish this sharp increased curve and sometimes result in the wrong Qmax data. In addition, it took too long for waiting the evaporator temperature approach to a steady state, thus this process could not use be for the fully check Qmax of the heat pipe. In this paper, we propose a novel quick test method to predict the maximum heat dissipation of the heat pipes namely Dynamic-Temperature-Tracing (D.T.T). The concept of the D.T.T was when we tracing the evaporator and the adiabatic wall temperature, these two temperature curves should be the same trend before the dry-out phenomena was occurred. Theoretically, when the dry-out start to occur in the heat pipe, the adiabatic temperature profile was no longer kept the same temperature profile as that of the evaporator. Hence, the maximum heat dissipate ability of the heat pipe was then easy to obtained at this measuring adiabatic temperature. The data were also compared with those obtained from the traditional standard method at the same equivalent evaporator length, condenser length and adiabatic temperature. In this experiments, sinter powder and groove heat pipes with diameter 6mm 8mm and 200mm length were selected as the capillary wick structure. Comparing with traditional method results, the errors of maximum heat transfer rate are less than 15%. The results also shown D.T.T. method is much fast and reliable compare with the traditional test method. This paper was also originally published as part of the Proceedings of the ASME 2005 Pacific Rim Technical Conference and Exhibition on Integration and Packaging of MEMS, NEMS, and Electronic Systems.
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Abe, Yoshiyuki, Akira Nakajima, Yoshihiko Maeda y Makoto Shimose. "Development of Plate Heat Pipes for the Thermal Management of Power Electronics". En ASME 2013 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/ipack2013-73086.
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Plate heat pipes, 4.0mm × 40mm × 375mm, of maximum heat transfer capability, Qmax, of the order of hundred W have been developed for the thermal management in power electronic devices such as IGBT (Insulated Gate Bipolar Transistor), MOSFET (Metal Oxide Semiconductor Field Effect Transistor), et al. The thermal performance in both horizontal and vertical orientations were experimentally evaluated, and outstanding thermal performance of Qmax up to 600W in the vertical orientation and thermal resistance as low as 0.01K/W were confirmed. In addition to the heat pipes, thermosyphons of the same dimensions as the plate heat pipes were also fabricated and tested as a comparison. The plate heat pipes were then applied to the thermal management systems for a CPU in a 1-U server and for SiC power JFET, and stable and satisfactory cooling performance of the heat pipes for the electronics devices was demonstrated.
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Biswal, Laxmidhar, Chandan Bandyopadhyay y Hafizur Rahaman. "Efficient Implementation of Fault-Tolerant 4:1 Quantum Multiplexer (QMUX) Using Clifford+T-Group". En 2019 IEEE International Symposium on Smart Electronic Systems (iSES) (Formerly iNiS). IEEE, 2019. http://dx.doi.org/10.1109/ises47678.2019.00027.
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