Gotowe bibliografie tematyczne / BCC

Gotowa bibliografia na temat „BCC”

Autor: Grafiati
Data publikacji: 4 czerwca 2021
Data aktualizacji: 31 stycznia 2023

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Artykuły w czasopismach na temat "BCC"

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Quintas, Lázaro José, i Messa Ndompetelo Leonardo. "Avaliação dos pricipais factores que influenciam no transbordo de águas suprficiais nas bacias de contecção no municipio de Viana, Luanda". BRAZILIAN APPLIED SCIENCE REVIEW 6, nr 4 (28.07.2022): 1411–28. http://dx.doi.org/10.34115/basrv6n4-015.

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O objectivo da pesquisa foi estudar os principais factores que influenciam no transbordo das águas das bacias de contenção na zona de estudo. A metodologia usada foi recurso bibliográfico e entrevistas do tempo de vivência na região (TV), da existência de eficiência no tratamento do lixo (ETL), descarte de resíduos nas bacias (DR), manutenção regular das bacias (MR), tratamento de esgotos sanitários (TES), consequências na construção em linhas de águas (CLA), uso de águas das bacias para fins domésticos (UAFD), consequências socioeconómicas (CSE) e benefícios (B). Se determinou também a capacidade volumétrica (CV) e capacidade de contenção (CC), assim como alguns parâmetros geométricos das bacias. Seis bacias de contenção (Bc) foram estudadas: Bc1,Bc2, Bc3, Bc4, Bc5, Bc6). Os resultados da TV foram divididos em 5 grupos (1-5, 6-10, 11-15, 16-20 e mais de 20 anos de vivência) num total de 93 pessoas. Para ETL, DR, MR, TES, CLA, UAFD e CSE a maior parte respondeu não existir e para B afirma existir. Quanto CV, CC os resultados indicam a Bc2 e Bc1 terem mais e Bc3 e Bc6 apresentaram menos. Os resultados dos parâmetros mostram para bacia Bc2 (39.118m2) e Bc5 e (8.774 m2). Para perímetros Bc4 registrou (1.450m) e Bc6 (484,8m). O coeficiente de compacidade indicou para Bc4 (3,016) e Bc5 (1,13). O factor de forma indicou no Bc6, (0,996), e Bc5 (0,04). O índice de circularidade foi no Bc3 (0,770) e Bc4 e Bc5 (0.1288). Conclui-se que existe influência de factores antropogénicos e naturais no transbordo das águas.
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Wang, Zhenhua, Dongming Jin, Jincan Han, Qing Wang, Zhongwei Zhang i Chuang Dong. "Microstructures and Mechanical Properties of Al-Ti-Zr-Nb-Ta-Mo-V Refractory High-Entropy Alloys with Coherent B2 Nanoprecipitation". Crystals 11, nr 7 (19.07.2021): 833. http://dx.doi.org/10.3390/cryst11070833.

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In this work, the microstructural evolution and mechanical properties of new body-centered cubic (BCC)-based Al-Ti-Zr-Nb-Ta-Mo-V refractory high-entropy alloys (RHEAs) with coherent B2 precipitation are investigated. These designed alloy ingots were solid-solutionized at 1573 K for 2 h and then aged at 873 K for 24 h, in which each treatment was followed by water quenching. It was found that there exists phase separation of BCC matrix, Ti/Zr-rich BCC1 and Nb/Ta-rich BCC2 in these alloys. Moreover, ultra-fine spherical B2 nanoparticles with a size of 3~5 nm were dispersed in BCC2 matrix. These B2 nanoparticles could be coarsened up to 25~50 nm after aging and the particle morphology also changes to a cuboidal shape due to a moderate lattice misfit (ε = 0.7~2.0%). Also, Zr5Al3 phase could coexist with the B2 phase, where the difference between them is that the Ti element is enriched in B2 phase, rather than in Zr5Al3. Among them, the solutionized Al2Ti5Zr4Nb2.5Ta2.5 RHEAs exhibit good compressive mechanical property with a high yield strength of 1240 MPa and a large plasticity, which is mainly attributed to the coherent precipitation in the BCC matrix.
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D’Alessandro, Margherita, Carola Parolin, Danka Bukvicki, Lorenzo Siroli, Beatrice Vitali, Maria De Angelis, Rosalba Lanciotti i Francesca Patrignani. "Probiotic and Metabolic Characterization of Vaginal Lactobacilli for a Potential Use in Functional Foods". Microorganisms 9, nr 4 (14.04.2021): 833. http://dx.doi.org/10.3390/microorganisms9040833.

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The main aim of this work was to verify the metabolic and functional aptitude of 15 vaginal strains belonging to Lactobacillus crispatus, Lactobacillus gasseri, and Limosilactobacillus vaginalis (previously Lactobacillus vaginalis), already characterized for their technological and antimicrobial properties. In order to evaluate the metabolic profile of these vaginal strains, a phenotype microarray analysis was performed on them. Functional parameters such as hydrophobicity, auto-aggregation, deconjugation of bile salts, adhesion to an intestinal cell line (Caco-2), and a simulated digestion process were evaluated for these strains. A good number of these strains showed hydrophobicity values higher than 70%. Regarding the auto-aggregation assay, the most promising strains were L. crispatus BC9 and BC1, L. gasseri BC10 and BC14, and L. vaginalis BC17. Moreover, L. crispatus BC4, BC6, BC7, and BC8 were characterized by strong bile salts hydrolase activity (BHS). In addition, L. crispatus BC8 and L. vaginalis BC17 were characterized by a medium ability to adhere to Caco-2 cells. Data related to digestion process showed a strong ability of vaginal lactobacilli to withstand this stress. In conclusion, the data collected show the metabolic versatility and several exploitable functional properties of the investigated vaginal lactobacilli.
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Sun, Hong Fei, Nana Guo, Can Ming Wang, Zhong Li Li i Hai Yun Zhu. "Study of the Microstructure of High-Entropy Alloys AlFeCuCoNiCrTiX (x=0, 05, 1.0)". Applied Mechanics and Materials 66-68 (lipiec 2011): 894–900. http://dx.doi.org/10.4028/www.scientific.net/amm.66-68.894.

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The microstructure of high-entropy Alloys AlFeCuCoNiCrTix (x=0, 05, 1.0) with different titanium contents had been studied. The results showed that: (1) The microstructure of AlFeCuCoNiCrTix exhibited the trend from dendritic structure to eutectic-cell structure as the titanium contents increasing and spinodal decomposition, nanoprecipitation and amorphous phase can be also observed; (2) Composition segregation appeared (especially Cu) and Ti promoted the segregation of Cu; (3) Alloys was consisted of FCC and BCC, and phases gradually converted from FCC+BCC1 to FCC+BCC1+BCC2 with addition of titanium and BCC2 became the leading phase; (4) Both ordering and spinodal decomposition coincided due to the difference of atomic size and high entropy effect.
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Feng, Cong, Xueliang Wang, Li Yang, Yongli Guo i Yaping Wang. "High Hardness and Wear Resistance in AlCrFeNiV High-Entropy Alloy Induced by Dual-Phase Body-Centered Cubic Coupling Effects". Materials 15, nr 19 (5.10.2022): 6896. http://dx.doi.org/10.3390/ma15196896.

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High-entropy alloys (HEAs) with high hardness are promising materials for advanced industrial manufacturing. In this study, the AlCrFeNiV HEA was designed and successfully prepared using a plasma instantaneous process. The hardness test showed that AlCrFeNiV had a high hardness of 1076 ± 15 HV, which was much higher than those reported in the literature. The microstructure of AlCrFeNiV was composed of two different types of body-centered cubic (BCC) structures, BCC1 (Al, Cr, Fe, and Ni) and BCC2 (enriched V and Cr). A mixture of different BCC systems produced solution strengthening, which was responsible for the superior hardness. Moreover, the reciprocating sliding wear behavior of HEA against Al2O3 balls under dry and lubricated conditions at ambient temperature was investigated. The wear rates of AlCrFeNiV against Al2O3 under dry wear and lubrication were 17.2 × 10−5 mm3 N−1·m−1 and 12.4 × 10−5 mm3N−1·m−1, respectively, which were of the same order of magnitude as the wear rates of BCC HEAs. Regardless of the dry wear or wear with lubrication, the wear mechanism of the HEA was abrasive and delamination wear.
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Arnheim, Katharina. "SG-BCC 2019 ++ SG-BCC 2019 ++ SG-BCC 2019". Im Fokus Onkologie 22, nr 3 (25.06.2019): 68–69. http://dx.doi.org/10.1007/s15015-019-0116-4.

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Koper, Magdalena, Anna Nadolska, Piotr Urbański i Maciej Wilski. "Relationship between Pre-Competition Mental State and Sport Result of Disabled Boccia Athletes". International Journal of Environmental Research and Public Health 17, nr 21 (7.11.2020): 8232. http://dx.doi.org/10.3390/ijerph17218232.

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The relationship between sport result and pre-competition mental state of 109 boccia athletes was analyzed. Mental state was described by: athletic identity, self-esteem, self-efficacy for sports, hope for success, fear of failure, anxiety, and expectancy of success. Correlation analyses were made for all four boccia classes (BC1, BC2, BC3, and BC4) and revealed that only athletic identity was associated with sport result in class BC4. Four hierarchical multiple regression models (for BC1, BC2, BC3, and BC4 boccia classes) were created, with sport result as the dependent variable. Only the BC4 model was significant and included athletic identity, anxiety, self-efficacy for sports, and expectancy of success, which explained 49% of variance in sport result. BC4 class results indicate that psychological variables have a potential impact on sport performance in boccia, and the type and level of disability should be taken into account.
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Ngo, Dai Hung, Quoc Tuan Tran, Thi Nhat Hang Nguyen, Anh Tuan Huynh, Thi Kim Thu Vo, Thanh Binh Nguyen, Dai Nghiep Ngo i Thanh Sang Vo. "Isolation and selection of high gamma aminobutyric acid-producing Lactobacillus strains from traditional fermented foods". Ministry of Science and Technology, Vietnam 65, nr 1 (25.01.2023): 20–25. http://dx.doi.org/10.31276/vjst.65(1).20-25.

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Gamma aminobutyric acid (GABA) is produced by microorganisms such as bacteria, yeast, and fungi. Lactic acid bacteria play crucial roles in processing and preserving Vietnamese traditional fermented foods. The study aims to isolate high GABA-producing Lactobacillusstrains from traditional fermented foods. Eight bacterial strains, including BC3, BC4, BC5, BC6, BC7, K08, KC1, and KC2, were isolated from traditional fermented food sources (cabbage, pickled scallion, and kimchi). After 72 hrs of fermentation, the BC3 strain produced the highest GABA content (4.279 g/l). This strain was identified as Lactobacillus fermentum by 16S rRNA analysis. The results from the investigation of the fermentation time and concentration of monosodium glutamate (MSG) showed that the BC3 strain producing the highest GABA with the value of 6.734 g/l was after 72 hrs of fermentation and the concentration of MSG 4%.
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Yuan, Yuan, Kaibo Wang, Rubao Lee, Xiaoning Ding, Jing Xing, Spyros Blanas i Xiaodong Zhang. "BCC". Proceedings of the VLDB Endowment 9, nr 6 (styczeń 2016): 504–15. http://dx.doi.org/10.14778/2904121.2904126.

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M. Mostafa, Samy. "Fuzzy Derivations BCC-Ideals on BCC-Algebras". Pure and Applied Mathematics Journal 4, nr 5 (2015): 225. http://dx.doi.org/10.11648/j.pamj.20150405.14.

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Rozprawy doktorskie na temat "BCC"

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Liu, Xiaohua. "Spin Excitations in BCC, FCC, HCP Cobalt and BCC Fe1-xCox Alloys /". The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487932351057225.

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Babu, Bibin. "Connected Me : Hardware for high speed BCC". Thesis, Linköpings universitet, Institutionen för systemteknik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-79442.

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Body coupled communication (BCC) is a hot topic in personal networking domain. Many works arepublished suggesting different architectures for BCC since its inception in 1995 by Zimmerman. The number ofelectronic gadgets used by a single person increases as time pass by. Its a tedious job to transfer data betweenthen from a user point of view. Many of these gadgets can share their resources and save power and money.The existing wired or wireless networks does not meet the requirements for this network like scalable data rate,security etc. So here comes the novel idea of using human body as communication medium. The aim of thisthesis is to realize a hardware for BCC based on wide band signaling as part of a big project.The human body consists of 70% of water. This property makes the human body a fairly good conductor.By exploiting this basic property makes the BCC possible. A capacitance is formed if we place a metal platenear to the human body with the skin as a dielectric. This capacitance forms the interface between the humanbody and the analog front-end of the BCC transceiver. Any other metal structures near to the human body canattenuate the signal.A first-order communication link is established in software by the human body model and the transceiver inthe loop along with noise and interference. This communication link is used to verify the human body modeland the base band model done as part of the same big project. Based on the results a hardware prototype isimplemented. Measurements are taken in different scenarios using the hardware setup. The trade-off betweendesign parameters are discussed based on the results. At the end, it suggests a road map to take the projectfurther.
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Ellis, M. "The ductile to brittle transition in BCC metals". Thesis, University of Oxford, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306220.

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Valikova, Irina V., i Andrei V. Nazarov. "Simulation of diffusion under pressure in bcc metals". Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-194630.

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This work is devoted to simulation of atom configurations in bcc metals near the point defect using the molecular static method. The values of migration and formation volumes are very sensitive to the atomic structure in the vicinity of a defect, which makes it necessary to consider a large number of atoms in the computation cell and to take into account an elastic matrix around the cell. We have developed the new model taking into the consideration these factors. It allows to define “fine structure” of displacement atoms near the point defect. The atoms of third zone were embedded in an elastic continuum. The displacement of each atom embedded in an elastic continuum was defined as the first and the second terms in solution of elastic equation. In the framework of this model we calculated the formation and migration volumes of defect. Also we take into the consideration that the energy of system (in particular the system with defect) depends on the outer pressure. This dependence gives an addition to the values of migration and formation volumes.
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Valikova, Irina, i Andrei Nazarov. "Simulation of diffusion under pressure in BCC metals". Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-195673.

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Soin, Preetma Kaur. "First principles modelling of dislocations in BCC iron". Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/11752.

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This work centers around employing magnetic tight binding to study defects in body centred cubic iron, a material of potentially great importance as a structural component in hydrogen fusion power plants. An existing d-band tight binding model was extended to include charge. The first task was to develop a working scheme for calculating spins and charges self consistently. This was achieved using an extended form of the Harris-Foulkes functional and implemented with a generalisation of the Newton-Raphson minimisation procedure. Having established such a scheme it was tested on bulk structures, point defects and straight dislocations. The motion of dislocations and the opposition to this was also considered though calculation of Peierls barriers.
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Valikova, Irina V., i Andrei V. Nazarov. "Simulation of diffusion under pressure in bcc metals". Diffusion fundamentals 3 (2005) 11, S. 1-15, 2005. https://ul.qucosa.de/id/qucosa%3A14298.

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This work is devoted to simulation of atom configurations in bcc metals near the point defect using the molecular static method. The values of migration and formation volumes are very sensitive to the atomic structure in the vicinity of a defect, which makes it necessary to consider a large number of atoms in the computation cell and to take into account an elastic matrix around the cell. We have developed the new model taking into the consideration these factors. It allows to define “fine structure” of displacement atoms near the point defect. The atoms of third zone were embedded in an elastic continuum. The displacement of each atom embedded in an elastic continuum was defined as the first and the second terms in solution of elastic equation. In the framework of this model we calculated the formation and migration volumes of defect. Also we take into the consideration that the energy of system (in particular the system with defect) depends on the outer pressure. This dependence gives an addition to the values of migration and formation volumes.
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Valikova, Irina, i Andrei Nazarov. "Simulation of diffusion under pressure in BCC metals". Diffusion fundamentals 2 (2005) 39, S. 1-2, 2005. https://ul.qucosa.de/id/qucosa%3A14369.

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Tsai, Joshua Jr-Syan. "Micromechanisms of Near-Yield Deformation in BCC Tantalum". BYU ScholarsArchive, 2021. https://scholarsarchive.byu.edu/etd/8906.

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New materials, optimized for increased strength, ductility, and other desirable properties, have the potential to improve every aspect of modern living. To achieve these optimums, the necessary technological advancements are impeded mainly by the limits of available material models. Innovations in this field rely on research into the nature of material behavior. While a typical model of material behavior in the region near yield involves the initial linear elastic response, followed by yield and isotropic hardening, this fails to explain various important phenomena that manifest in a range of materials, such as pre-yield nonlinearity, anelasticity, yield point phenomena, hardening stagnation, and the Bauschinger effect. These effects have been explained over the past century with the theories of Cottrell atmospheres, the Orowan by-pass mechanism, and back stress. This manuscript compares data from experimental observation in tantalum to these theories to better understand the micromechanisms occurring near yield. Understanding deformation in this region has significant implications in structural and mechanical engineering, as well has having direct applications in the forming of metals. Forty-four dogbone-shaped samples were cut from 99.99% pure tantalum and pulled in load-unload-load and multi-cycle loop tensile tests at room temperature. The specimens were either single crystal, whose orientations were chosen based on desired active slip mode determined by Schmid factors, or bicrystal, based on the orientation of the single grain boundary. Sample behavior was simulated in both crystal plasticity and General Mesoscale finite element models to assist in interpreting results and in suggesting plausible micromechanisms. The experimental results and crystal plasticity simulations suggest alternate explanations to some of the discussed mechanical theories of near-yield deformation. The combined experimental / modeling approach indicates that other slip systems, besides the conventionally assumed {110}, are activated upon yield; particularly the {112} system. The breakaway model traditionally associated with the yield point phenomenon may also be better explained through a different mechanism; back stress development during deformation is shown to result in the observed behavior. Lastly, as is well-known, the Taylor formulation, upon which most crystal plasticity models are based, does not adequately predict yield stress behavior in the presence of grain boundaries; once again, an internal stress mechanism matches much better with the experimental results on single and bicrystals. While not all observations could be fully explained by simply adding internal stress generation to a standard crystal plasticity model, this work anticipates further studies to enable more accurate predictive modeling capabilities and increase understanding of the mechanisms driving the fundamental material properties necessary for future progress.
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Sinclair, Chad. "Co-deformation of a two-phase FCC/BCC material /". *McMaster only, 2001.

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Książki na temat "BCC"

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Commission of the European Communities. SME Cooperation and Transnational Development and the Business Cooperation Centre. The Business Cooperation Center (BCC): Bureau de Rapprochement des Entreprises. Brussels: Commission of the European Communities, Directorate-General for Enterprise Policy, Distributive Trades, Tourism and Cooperatives, 1991.

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Lin, Peter Keng-Yu. Evolution of grain boundary character distributions in FCC and BCC materials. Ottawa: National Library of Canada = Bibliothèque nationale du Canada, 1997.

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Esmonde Cleary, A. S. (A. Simon) i Sears Gareth 1977-, red. The city in the Roman West, c.250 BCc-c.AD 250. Cambridge: Cambridge University Press, 2011.

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Alam, S. M. Nurul. Healthcare-seeking behaviour and BCC needs for urban population: A qualitative study. Dhaka: ICDDR,B, Centre for Health and Population Research, 2000.

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J, Mooney Peter. Opportunities for plastics in toys and outdoor playground equipment: A BCC market probe. Norwalk, CT: Business Communications Co., 1992.

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Ethiopia. YaGanzabenā yaʼikonomi lemāt ministér. Population Affairs Directorate. National population information, education, and communication (IEC)/behavior change communication (BCC) and advocacy strategy, 2011-2015. Wyd. 2. Addis Ababa: Population Affairs Directorate, Ministry of Finance and Economic Development, 2011.

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AIDS Prevention and Control Project. APAC's communique 2005: A catalogue of BCC materials on STD/HIV/AIDS prevention & care and support. Chennai: AIDS Prevention and Control (APAC) Project, Voluntary Health Services (VHS), 2005.

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Khan, M. E. Situation analysis of behavior change communication activities in Bihar: A step towards developing a comprehensive BCC strategy. New Delhi: Population Council, 2012.

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Committee, British Council of Churches Christian Stewardship. Stewards of God's House: The report of the BCC Christian Stewardship Committee on Christian Stewardship and Church Buildings. London: Yale Press for the British Council of Churches, 1988.

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Council, Swaziland National Youth. Baseline survey for BCC strategy for HIV and AIDS prevention among youth people aged 10-30 years in Swaziland. Mbabane?]: Swaziland National Youth Council, 2008.

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Części książek na temat "BCC"

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Leung, Alexander K. C., Marcus Schmitt, Christie P. Thomas, Cord Sunderkötter, Meinhard Schiller, Thomas Schwarz, Mark Berneburg i in. "BCC". W Encyclopedia of Molecular Mechanisms of Disease, 210. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-29676-8_7287.

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Thomys, Janus. "BCC-Algebras - Introduction". W BCC-Algebras, 1–42. Boca Raton: Chapman and Hall/CRC, 2022. http://dx.doi.org/10.1201/9781003331568-1.

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Thomys, Janus. "Ideal Theory of Weak BCC-Algebras". W BCC-Algebras, 229–316. Boca Raton: Chapman and Hall/CRC, 2022. http://dx.doi.org/10.1201/9781003331568-4.

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Thomys, Janus. "Special Objects in Weak BCC-Algebras". W BCC-Algebras, 43–98. Boca Raton: Chapman and Hall/CRC, 2022. http://dx.doi.org/10.1201/9781003331568-2.

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Thomys, Janus. "Subclasses of BCC-Algebras". W BCC-Algebras, 99–228. Boca Raton: Chapman and Hall/CRC, 2022. http://dx.doi.org/10.1201/9781003331568-3.

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Trigkatzis, Platon, i Marco Malahias. "Basal Cell Carcinoma (BCC)". W Rhinology and Anterior Skull Base Surgery, 129–33. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-66865-5_26.

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Masterpol, Kasia Szyfelbein, Andrea Primiani i Lyn McDivitt Duncan. "Basal Cell Carcinoma (BCC) Types". W Atlas of Essential Dermatopathology, 66–67. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-4471-7_29.

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Swinburne, Thomas D. "Atomistic Simulations in bcc Metals". W Stochastic Dynamics of Crystal Defects, 27–47. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-20019-4_4.

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Tiosano, Alon, Natalia Michaeli i Iftach Yassur. "Periocular Basal Cell Carcinoma (BCC)". W Atlas of Orbital Imaging, 1–3. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-41927-1_32-1.

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Tiosano, Alon, Natalia Michaeli i Iftach Yassur. "Periocular Basal Cell Carcinoma (BCC)". W Atlas of Orbital Imaging, 349–51. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-62426-2_32.

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Streszczenia konferencji na temat "BCC"

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Chung, Ching-Che, Chih-Yu Lin i Jia-Zong Yang. "Time-domain characteristics of body channel communication (BCC) and BCC transceiver design". W 2016 International Symposium on VLSI Design, Automation and Test (VLSI-DAT). IEEE, 2016. http://dx.doi.org/10.1109/vlsi-dat.2016.7482530.

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Dou, YanKun, XinFu He, DongJie Wang, Wu Shi, LiXia Jia i Wen Yang. "The Study of Nanosized Cu-Mn Precipitates Contribution to Hardening in Bcc Fe Matrix". W 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-66505.

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In order to study the contribution of Mn atoms in Cu precipitates to hardening in bcc Fe matrix, the interactions of a (111){110} edge dislocations with nanosized Cu and Cu-Mn precipitates in bcc Fe have been investigated by using of molecular dynamics. The results indicate that the critical resolved shear stresses (τc) of the Cu-Mn precipitates are larger than that of Cu precipitates. Meanwhile, τc of the Cu-Mn precipitates show a much more significant dependence on temperature and size, compared to Cu precipitates. Mn atoms exhibit strong attractive interaction with <111> crowdion and improve the fraction of transformed atoms from body centred cubic (bcc) phase to face centred cubic (fcc) phase for big size precipitates. Those all lead to the higher resistance to the dislocation glide. The increasing temperature can assist the Cu atoms rearrange back towards a bcc structure, resulting in the rapid decline of τc. Similar to Cu precipitate, Cu-Mn precipitate with equator planes on the dislocation glide plane is proved to be the strongest obstacle. Eventually, these features are confirmed that the appearance of Mn atoms in Cu precipitates greatly facilitates the hardening in bcc Fe matrix.
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Bernier, M. E. R., i J. H. Hetherington. "Vacancies in bcc solid 3He". W Symposium on quantum fluids and solids−1989. AIP, 1989. http://dx.doi.org/10.1063/1.38795.

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Mercado, Lei L., Vijay Sarihan i Russell Fiorenzo. "A Performance & Manufacturability Evaluation of Bump Chip Carrier Packages". W ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0918.

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Abstract Bump Chip Carrier® (BCC) is an attractive solution to the demand of high packaging density of low I/O-count packages. It offers low cost, high performance, and much smaller package size than Quad Flat Packages (QFP). Electrically, BCC offers significant performance advantage as a function of frequency. It also has customizable configurations. In this paper, an extensive finite element thermomechanical analysis has been conducted to evaluate the reliability of BCC packages during thermal cycling. The effect of a variety of parameters on package reliability was evaluated, including board thickness, package size mold material, solder paste thickness, and terminal height. The solder reliability of corner leads vs. inner leads, as well as square leads vs. rectangular leads was also investigated. Then some manufacturing issues were studied. During manufacturing, molded panels for BCC packages are undergoing significant warpage. Two types of mold designs were compared through 3D finite element analysis. A variety of mold compound materials were evaluated. The most effective way to reduce warpage was suggested.
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Wu, Siqi, i Erol Sancaktar. "3D-Printed Polymeric Metamaterial Recovery Behavior After Large Deformation". W ASME 2020 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/detc2020-22361.

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Abstract Human-made lattice mechanical metamaterials have recently been shown to exhibit better stiffness or tunable properties than natural materials. We demonstrated that body-centered-cubic (BCC) metamaterials made by 3D-printer stereolithography (SLA) display good recovery properties after undergoing cyclic large compressive deformation. Our experimental results reveal that the strut thickness of BCC metamaterials affect the recovery and mechanical behaviors during compression.
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Gu, Bei, i H. Harry Asada. "Co-Simulation of Algebraically Coupled Dynamic Subsystems". W ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/dsc-24547.

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Abstract This paper analyzes the problem of Co-Simulation. The term Co-Simulation is used to describe a large dynamic system that is simulated by running a group of independently coded subsystem simulators. Very commonly, the Co-Simulation of subsystems faces incompatible boundary conditions, i.e., causal conflicts. These causal conflicts cannot be directly resolved, due to the nonlinearity and/or difficulties in modification of coded subsystem simulators. Causal conflicts result in algebraic constraints. Boundary Condition Coordinators (BCCs) are designed to calculate boundary conditions based on subsystem models and their algebraic constraints. The Co-Simulation, which is modeled as Differential Algebraic Equations, then relies on BCC to provide compatible boundary conditions for subsystem simulators. The high index constraint is reduced to index one by defining a sliding manifold. Different ways of enforcing the sliding manifold are discussed: A new Discrete-Time Sliding Mode (DTSM) controller is devised to serve as a BCC, enforcing sliding manifolds and providing boundary conditions. The multi-rate scheme can guarantee Co-Simulation stability at any given step size of all subsystem simulators, provided the subsystem simulators are tested stable at that step size. An example is given to demonstrate the DTSM method. Advantages and possible future improvements are discussed.
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Batista, Daniel, Giuliano Olguin, Jackson De Souza, José De Pina, Pedro Campos i William Gnann. "Nova grade curricular do BCC-IME-USP". W Workshop sobre Educação em Computação. Sociedade Brasileira de Computação - SBC, 2015. http://dx.doi.org/10.5753/wei.2015.10230.

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A última reformulação na grade curricular do Bacharelado em Ciência da Computação (BCC) do IME-USP deu-se em 1998. Há quatro anos um grupo de alunos, ex-alunos e professores do BCC iniciou um estudo com o objetivo de propor atualizações para a grade curricular do curso. Entre as principais mudanc¸as propostas por este grupo estão a criação de trilhas e o aumento do número de disciplinas optativas eletivas, permitindo, inclusive, que os alunos cursem mais disciplinas de outras áreas e mesmo de outras universidades. Atualmente o Departamento de Ciência da Computação está implementando essas propostas. Neste texto apresentamos o processo de mudanc¸a da grade, a nova grade curricular, bem como as diferenc¸as entre as grades curriculares antiga, vigente e a proposta.
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Greer, Julia R., Ju-Young Kim i Steffen Brinckmann. "In-Situ Investigation of Plasticity at Nano-Scale". W ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59117.

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Mechanical behavior of crystals is dictated by dislocation motion in response to applied force. While it is extremely difficult to directly observe the motion of individual dislocations, several correlations can be made between the microscopic stress-strain behavior and dislocation activity. Here, we present for the first time the differences observed between mechanical behavior in two fundamental types of crystals: face-centered cubic, fcc (Au, Cu, Al, Ni, etc.) and body-centered cubic, bcc (W, Cr, Mo, Nb, etc.) with sub-micron dimensions subjected to in-situ micro-compression in SEM chamber. In a striking deviation from classical mechanics, there is a significant increase in strength as crystal size is reduced to 100nm; however in gold crystals (fcc) the highest strength achieved represents 44% of its theoretical strength while in molybdenum crystals (bcc) it is only 7%. Moreover, unlike in bulk where plasticity commences in a smooth fashion, both nano-crystals exhibit numerous discrete strain bursts during plastic deformation. These remarkable differences in mechanical response of fcc and bcc crystals to uniaxial micro-compression challenge the applicability of conventional strain-hardening to nano-scale crystals. We postulate that they arise from significant differences in dislocation behavior between fcc and bcc crystals at nanoscale and serve as the fundamental reason for the observed differences in their plastic deformation. Namely, dislocation starvation is the predominant mechanism of plasticity in nano-scale fcc crystals while junction formation and subsequent hardening characterize bcc plasticity, as confirmed by the microstructural electron microscopy. Experimentally obtained stress-strain curves together with video frames during deformation and cross-sectional TEM analysis are presented, and a statistical analysis of avalanche-like strain bursts is performed for both crystals and compared with stochastic models.
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Samin, A. "A Computational Investigation of the Diffusive Pathways for Interstitial Helium in bcc W and bcc Mo". W Transactions - 2020 Virtual Conference. AMNS, 2020. http://dx.doi.org/10.13182/t122-32367.

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Samin, A. "A Computational Investigation of the Diffusive Pathways for Interstitial Helium in bcc W and bcc Mo". W Transactions - 2020 Virtual Conference. AMNS, 2020. http://dx.doi.org/10.13182/t32367.

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Raporty organizacyjne na temat "BCC"

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Belof, Jonthan. Nucleation of metastable bcc intermediates. Office of Scientific and Technical Information (OSTI), luty 2018. http://dx.doi.org/10.2172/1763945.

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Hemker, Kevin J. Characterization of Dislocation Core Structures in BCC Metals. Fort Belvoir, VA: Defense Technical Information Center, sierpień 2004. http://dx.doi.org/10.21236/ada443132.

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Lassila, D. H. Dislocation dynamics: simulation of plastic flow of bcc metals. Office of Scientific and Technical Information (OSTI), luty 2001. http://dx.doi.org/10.2172/15005437.

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Sokolov, J., F. Jona i P. M. Marcus. Multilayer Relaxation of a Clean Bcc FE(111) Surface. Fort Belvoir, VA: Defense Technical Information Center, styczeń 1986. http://dx.doi.org/10.21236/ada201550.

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Bonner, B., M. Leblanc, D. Lassila, D. Field i J. Escobedo. Measurement of Shear Strength in BCC Materials Subjected to Moderate Pressures. Office of Scientific and Technical Information (OSTI), luty 2004. http://dx.doi.org/10.2172/15013904.

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Florando, J., M. LeBlanc, D. Lassila, V. Bulatov, M. Rhee, A. Arsenlis, R. Becker, J. Jr i K. Magid. Multiscale Characterization of bcc Crystals Deformed to Large Extents of Strain. Office of Scientific and Technical Information (OSTI), luty 2007. http://dx.doi.org/10.2172/919599.

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Gerberich, W. W. [A microstructural approach to fatigue crack processes in poly crystalline BCC materials]. Office of Scientific and Technical Information (OSTI), styczeń 1992. http://dx.doi.org/10.2172/6345356.

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Jinke, Tang. Physical metallurgy and magnetic behavior of Cd stabilized bcc (beta)Gd alloys. Office of Scientific and Technical Information (OSTI), wrzesień 1990. http://dx.doi.org/10.2172/6888636.

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Mujahed, Hamzeh, i Benedek Nagy. Hyper-Wiener Index on Rows of Unit Cells of the BCC Grid. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, maj 2018. http://dx.doi.org/10.7546/crabs.2018.05.13.

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Hirth, J. P., M. Rhee, H. M. Zhib i T. D. de la Rubia. 3D dislocation dynamics: stress-strain behavior and hardening mechanisms in FCC and BCC metals. Office of Scientific and Technical Information (OSTI), luty 1999. http://dx.doi.org/10.2172/12206.

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