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Добірка наукової літератури з теми "SCC ANALYSIS"

Автор: Grafiati

Опубліковано: 26 жовтня 2023

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Статті в журналах з теми "SCC ANALYSIS"

Bamigboye, Gideon O., David O. Olukanni, Adeola A. Adedeji, and Kayode J. Jolayemi. "Experimental Study on the Workability of Self-Compacting Granite and Unwashed Gravel Concrete." International Journal of Engineering Research in Africa 31 (July 2017): 69–76. http://dx.doi.org/10.4028/www.scientific.net/jera.31.69.

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This study deals mainly with the mix proportions using granite and unwashed gravel as coarse aggregate for self-compacting concrete (SCC) and its workability, by considering the water absorption of unwashed gravel aggregate. Mix proportions for SCC were designed with constant cement and fine aggregate while coarse aggregates content of granite-unwashed gravel combination were varied in the proportion 100%, 90%/10%, 80%/20%, 70%/30%, 60%/40%, 50% /50%, represented by SCC1, SCC2, SCC3, SCC4, SCC5 and SCC6. 100% granite (SCC1) serves as the control. The workability of the samples was quantitatively evaluated by slump flow, T500, L-box, V- funnel and sieve segregation tests. Based on the experimental results, a detailed analysis was conducted. It was found that granite and unwashed gravel with SCC1, SCC2 and SCC3 according to EFNARC (2002) standard have good deformability, fluidity and filling ability, which all passed consistency test. SCC1, SCC2 and SCC3 have good passing ability while all mixes were in the limit prescribed by EFNARC (2002). It can be concluded that the mix design for varying granite-unwashed gravel combination for SCC presented in this study satisfy various requirements for workability hence, this can be adopted for practical concrete structures.

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N, Sharankumar. "Flexural Behaviour of SCC Beams Incorporating Industrial Wastes." International Journal for Research in Applied Science and Engineering Technology 11, no. 6 (June 30, 2023): 464–69. http://dx.doi.org/10.22214/ijraset.2023.53697.

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Abstract: Self-Compacting Concrete (SCC) is a concrete form developed in Japan. Because of its novelty, this form of concrete differs from traditional concrete. Compaction is required for conventional concrete, but not for SCC which is utilized in substantially reinforced constructions where it is challenging to compact concrete. Industrial wastes such as Fly Ash (FA) and Cement Kiln Dust (CKD) [which contaminate the environment] are used as partial replacements for cement, and, Granite Powder (GP) and Eco Sand (EC) are used as partial replacements for M-sand. The optimum mix proportions of casted beams obtained by Taguchi method are SCC1 (FA30%), SCC2 (FA25%+CKD5%), SCC3 (FA30%+GP20%), SCC4 (FA25%+CKD5%+GP20%), SCC5 (FA30%+EC10%), and SCC6 (FA25%+CKD5%+EC10%). For each composition, the flexural behavior of SCC beams is experimentally investigated. Experimental work is verified by FEM analysis using the ABAQUS software. When the outcomes from the experimental and numerical analysis are compared, it is evident that SCC6 outperformed other mixes in terms of flexure

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Doppalapudi, Arun Teja, Abul Kalam Azad, and Mohammad Masud Kamal Khan. "Analysis of Improved In-Cylinder Combustion Characteristics with Chamber Modifications of the Diesel Engine." Energies 16, no. 6 (March 9, 2023): 2586. http://dx.doi.org/10.3390/en16062586.

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This study numerically analyses the effects of chamber modifications to investigate the improvement of in-cylinder combustion characteristics of the diesel engine using a computational fluid dynamics (CFD) approach. Five different modified chambers, namely, the double swirl combustion chamber (DSCC), bathtub combustion chamber (BTCC), double toroidal re-entrant combustion chamber (DTRCC), shallow depth combustion chamber (SCC), and stepped bowl combustion chamber (SBCC) were developed and compared with a reference flat combustion chamber (FCC). The effects of chamber modifications on temperature formation, velocity distribution, injection profiles, and in-cylinder turbulent motions (swirl and tumble ratio) were investigated. During the compression stroke, near top dead centre, the SCC showed a peak temperature of 970 K, followed by the FCC (968 K), SBCC (967 K), and DTRCC (748 K to 815 K). The DSCC and the SCC showed a high swirl ratio above 0.6, whereas the DTRCC and the BTCC showed a high tumble ratio of approximately 0.4. This study found that the SCC, BTCC, and DSCC have better combustion rates than the FCC in terms of temperature, heat release rate, and velocity distribution. However, the DTRCC showed poor temperature formation rates and rapid heat release rates (approx. 150 J/°CA), which can lead to rapid combustion and knocking tendencies. In conclusion, the DSCC and the SCC showed better combustion rates than the other chambers. In addition, turbulent motions inside the chambers avoided combustion in crevice regions. This study recommends avoiding chambers with wider bowls in order to prevent uneven combustion across the cylinder. Furthermore, split bowls such as the DSCC, along with adjusted injection rates, can provide better results in terms of combustion.

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Sui, Rong Juan, Song Ying Chen, Cheng Zhou, Hai Bin Liu, and Yan Hui Chu. "Correlation Degree Analysis on Temperature and Operating Pressure to Stress Corrosion Cracking Susceptibility." Advanced Materials Research 941-944 (June 2014): 1492–96. http://dx.doi.org/10.4028/www.scientific.net/amr.941-944.1492.

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Temperature and operating pressure are important to stress corrosion cracking (SCC) of stainless steel. The SCC susceptibility of 18-8 type austenitic stainless steel, 06Cr18Ni11Ti (S32168), in an environment containing hydrogen chloride was assessed using the slow strain rate tensile (SSRT) test under different temperature and operating pressure. Results of the SSRT test indicated that the impact of operating pressure on the SCC susceptibility was different at different temperatures. The correlation degrees of temperature and operating pressure to SCC susceptibility were calculated using the grey relational theory. The correlation degree of temperature to the SCC susceptibility was greater than that of operating pressure to the SCC susceptibility.

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Huzni, Syifaul, M. Ridha, and Ahmad Kamal Ariffin. "Stress Distribution Analysis on Four Types of Stress Corrosion Cracking Specimen." Key Engineering Materials 462-463 (January 2011): 194–99. http://dx.doi.org/10.4028/www.scientific.net/kem.462-463.194.

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Stress distribution analysis on four types of stress corrosion cracking (SCC) specimen is presented in this paper. This work was performed using commercial finite element based software, ANSYS. Two types of mesh arrangements, fixed mesh with different mesh size and adaptive mesh, were employed in this work to study the effect of mesh size on stress distribution of SCC specimen. Four types of SCC specimen were studied in this work, i.e. C-ring specimen, tensile test specimen, pre-crack cantilever beam specimen and U-bend specimen. Simulation result shows that stress distribution on the SCC specimen much affected by mesh size and arrangement, especially for specimen with notch. By performing the stress analysis, less effort needed in order to determine the location of corrosion potential measurement on the SCC specimen. This will be very helpful for future work of SCC study.

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Dong, Liang, Chaoyuan Ge, Zhengwei Xu, Dongqi Wang, Honghui Sun, and Dingjun Hao. "Kinematic MRI Analysis of Reducible Atlantoaxial Dislocation for Decompression." BioMed Research International 2020 (December 15, 2020): 1–7. http://dx.doi.org/10.1155/2020/5395071.

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Background. Many doctors ignored the possibility that there is still a spinal cord compression (SCC) need for decompression after atlantoaxial reduction. Reduction can be achieved on kinematic magnetic resonance imaging (MRI); thus, we want to analyze the role of kinematic MRI in reducible atlantoaxial dislocation and make a preoperative decision whether to perform decompression. Methods. 36 patients with atlantoaxial reduction on preoperative kinematic MRI in extension postures were enrolled retrospectively. Grouping was based on the condition of SCC after atlantoaxial reduction preoperatively. Group A: patients with SCC after atlantoaxial reduction on dynamic cervical MRI were treated with C1 laminectomy for decompression and atlantoaxial fixation. Group B: patients with no significant SCC, according to dynamic MRI, underwent only atlantoaxial fixation. Clinical outcomes were evaluated using JOA score for spinal cord function. Radiological outcomes were assessed by measuring spinal cord diameter on MRI. Results. The mean follow-up time was 17.1 months. Postoperative JOA score and percentage of SCC in both groups were significantly better than its preoperative score. There were no significant statistical differences in the JOA score at 12 months after surgery and the JOA improvement rate between two groups. All patients in the two groups had a lower percentage of SCC on preoperative extension MRI, compared with neutral MRI. No significant statistical differences in the spinal decompression improvement rate were observed between the two groups. Conclusions. Decompression should be performed in patients who still have significant SCC on preoperative kinematic MRI. Kinematic MRI could be used to assess SCC and decide whether to perform decompression preoperatively.

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Do, WangLok, Farzin Asadi, and Kei Eguchi. "A New Analysis Way of Three-Phase Switched Capacitor Converter." Journal of Circuits, Systems and Computers 28, no. 08 (July 2019): 1950138. http://dx.doi.org/10.1142/s021812661950138x.

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The paper presents the theoretical analysis way of the switched capacitor converter (SCC). The main goal of this research is to suggest the analysis way of three-phase SCC. A common SCC operates by two phases; charging phase and discharging phase. Therefore, state-space averaging model or slow and fast switching limit (S-FSL) model has been suitable. Although the four-terminal equivalent model can cover all situation including three-phases cases, this model does not include the parameter of frequency and capacitance. Therefore, the four-terminal model has a weakness. In this situation, we selected the Fibonacci sequence SCC operated by three-phase as the target circuit, which topology has been proved to have higher efficiency, small size in the previous research. In the paper, we suggest the new analysis way of the three-phase SCC by combination of the four-terminal equivalent model and RC circuit model from each loop equation of the equivalent circuits of the SCC. By using the suggested way, it is possible to analyze the three-phase SCC, deriving the effect of the load, operation frequency and duty ratio variation. In order to verify the feasibility and the cogency of the suggested analysis way, comparative analysis is implemented by SPICE simulations. The error in the load regulation between the suggested way and the simulation result is negligible. Through this result, we establish the foundation of the analysis of the three-phase SCC.

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Bang, Seongsik, Hwangkyu Son, Hyebin Cha, Kihyuk Song, Hosub Park, Hyunsung Kim, Joo Yeon Ko, Jaekyung Myung, and Seungsam Paik. "Immunohistochemical Analysis of Single-Stranded DNA Binding Protein 2 in Non-Melanoma Skin Cancers." Biomedicines 11, no. 7 (June 25, 2023): 1818. http://dx.doi.org/10.3390/biomedicines11071818.

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Single-stranded DNA binding protein 2 (SSBP2) is a tumor suppressor candidate. In this study, the expression level and clinicopathological significance of SSBP2 in squamous cell carcinoma (SCC) and basal cell carcinoma (BCC) were evaluated. We also identified biological pathways associated with a set of genes potentially related to SSBP2. Immunohistochemistry (IHC) was performed on 70 SCC and 146 BCC cases to assess SSBP2 expression semi-quantitatively. In addition, the associations between SSBP2 expression and clinicopathological characteristics were analyzed. Gene ontology (GO) enrichment analysis was performed using publicly available data and web-based bioinformatics tools. Compared with BCC, SCC had a significantly low SSBP2 expression (p < 0.001). In total, 12 (17.1%) of the 70 SCC cases and 30 (20.5%) of the 146 BCC cases showed low SSBP2 expression. Among SCC cases, ulceration (p = 0.005) and a deep level of invasion (p = 0.012) showed an association with low SSBP2 expression. Local recurrence was slightly more common in the SCC subgroup with low SSBP2 expression, although the difference was not significant (p = 0.058). Using GO enrichment analysis, we identified several biological functions performed by a set of 36 genes in SCC. SSBP2 evaluation using IHC can be helpful in the differential diagnosis of SCC and BCC. SSBP2 expression was associated with tumor invasiveness in SCC.

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Tripathi, Veeresh, Kartikeya Singh, Shwetank Parihar, and Saurabh Kumar Srivastava. "A Bibliometric Analysis on Supply Chain Collaboration." Purushartha - A Journal of Management Ethics and Spirituality 15, no. 02 (June 25, 2022): 66–103. http://dx.doi.org/10.21844/16202115205.

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Supply Chain Collaboration (SCC) has been a topic of great interest among the supply chain researchers for decades now. Collaboration among channel-partners is imperative for successful supply chain management and may be the most critical core competency for enhancing the supply chain performance. This paper examines the various SCC frameworks and their development through a bibliometric analysis of the SCC literature published under the Web of Science (WoS) database in the last twenty years from 2003 to 2022 (including early access for January, 2022) comprising of 4249 research articles. The analysis and graphical visualization of the bibliometric data is presented using measures of descriptive statistics and visualization tools identifying the linkages between the published literature. This study analyses the distribution of the publications based on the research author analysis, most cited publications analysis, publication source analysis, country-wise literature analysis and the keywords co-occurrence analysis. The study also examines the most cited researches on SCC in last two decades and attempts to collate the major developments in the SCC knowledgebase. This research corroborates the enormity of the research conducted in the past and accentuates the ever-growing significance of collaboration in the supply chains for future researchers and businesses worldwide. On an average more than two hundred articles are published every year on SCC and the time-series forecasts reaffirm its progressiveness and relevance as a research domain more than ever engaging researchers and business organisation across the globe. The systematically collated data of top twenty most cited articles, authors, journals, keyword and countries involved in SCC research has been prepared which will provide a source of practical reference for the early supply chain researchers and professionals globally.

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Wang, Chao, Roderick Bloem, Gary D. Hachtel, Kavita Ravi, and Fabio Somenzi. "Compositional SCC Analysis for Language Emptiness." Formal Methods in System Design 28, no. 1 (January 2006): 5–36. http://dx.doi.org/10.1007/s10703-006-4617-3.

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Більше джерел

Дисертації з теми "SCC ANALYSIS"

Geda, Lemi Gemechu. "Macrostructure and Micro chemistry Analysis on Stress Corrosion Cracking(SCC) of Alloy 690." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1374161228.

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Hosseinpoor, Masoud. "Numerical simulation of fresh SCC flow in wall and beam elements using flow dynamics models." Thèse, Université de Sherbrooke, 2016. http://hdl.handle.net/11143/9808.

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Abstract : Recently, there is a great interest to study the flow characteristics of suspensions in different environmental and industrial applications, such as snow avalanches, debris flows, hydrotransport systems, and material casting processes. Regarding rheological aspects, the majority of these suspensions, such as fresh concrete, behave mostly as non-Newtonian fluids. Concrete is the most widely used construction material in the world. Due to the limitations that exist in terms of workability and formwork filling abilities of normal concrete, a new class of concrete that is able to flow under its own weight, especially through narrow gaps in the congested areas of the formwork was developed. Accordingly, self-consolidating concrete (SCC) is a novel construction material that is gaining market acceptance in various applications. Higher fluidity characteristics of SCC enable it to be used in a number of special applications, such as densely reinforced sections. However, higher flowability of SCC makes it more sensitive to segregation of coarse particles during flow (i.e., dynamic segregation) and thereafter at rest (i.e., static segregation). Dynamic segregation can increase when SCC flows over a long distance or in the presence of obstacles. Therefore, there is always a need to establish a trade-off between the flowability, passing ability, and stability properties of SCC suspensions. This should be taken into consideration to design the casting process and the mixture proportioning of SCC. This is called “workability design” of SCC. An efficient and non-expensive workability design approach consists of the prediction and optimization of the workability of the concrete mixtures for the selected construction processes, such as transportation, pumping, casting, compaction, and finishing. Indeed, the mixture proportioning of SCC should ensure the construction quality demands, such as demanded levels of flowability, passing ability, filling ability, and stability (dynamic and static). This is necessary to develop some theoretical tools to assess under what conditions the construction quality demands are satisfied. Accordingly, this thesis is dedicated to carry out analytical and numerical simulations to predict flow performance of SCC under different casting processes, such as pumping and tremie applications, or casting using buckets. The L-Box and T-Box set-ups can evaluate flow performance properties of SCC (e.g., flowability, passing ability, filling ability, shear-induced and gravitational dynamic segregation) in casting process of wall and beam elements. The specific objective of the study consists of relating numerical results of flow simulation of SCC in L-Box and T-Box test set-ups, reported in this thesis, to the flow performance properties of SCC during casting. Accordingly, the SCC is modeled as a heterogeneous material. Furthermore, an analytical model is proposed to predict flow performance of SCC in L-Box set-up using the Dam Break Theory. On the other hand, results of the numerical simulation of SCC casting in a reinforced beam are verified by experimental free surface profiles. The results of numerical simulations of SCC casting (modeled as a single homogeneous fluid), are used to determine the critical zones corresponding to the higher risks of segregation and blocking. The effects of rheological parameters, density, particle contents, distribution of reinforcing bars, and particle-bar interactions on flow performance of SCC are evaluated using CFD simulations of SCC flow in L-Box and T-box test set-ups (modeled as a heterogeneous material). Two new approaches are proposed to classify the SCC mixtures based on filling ability and performability properties, as a contribution of flowability, passing ability, and dynamic stability of SCC.
Résumé : Récemment, il y a un grand intérêt à étudier les caractéristiques d'écoulement des suspensions dans différentes applications environnementales et industrielles, telles que les avalanches des neiges, les coulées de débris, les systèmes de transport et les processus d’écoulement des matériaux. En ce qui concerne les aspects rhéologiques, la plupart des suspensions, comme le béton frais, se comportent comme un fluide non-Newtonien. Le béton est le matériau de construction le plus largement utilisé dans le monde. En raison de limites qui caractérisent le béton normal en termes de maniabilité et de capacité de remplissage de coffrage, il était nécessaire de développer une nouvelle classe de béton qui peut couler sous son propre poids, en particulier à travers les zones congestionnées du coffrage. Par conséquent, le béton autoplaçant (BAP) est un nouveau matériau de construction qui est de plus en plus utilisé dans les différentes applications. Étant donné sa fluidité élevée de BAP peut être utilisé dans certaines applications particulières, notamment dans la section densément renforcée. Cependant, la fluidité élevée rend le béton plus sensible à la ségrégation des gros granulats pendant l'écoulement (la ségrégation dynamique) et ensuite au repos (ségrégation statique). La ségrégation dynamique peut augmenter lorsque le BAP est coulé sur une longue distance ou en présence d'obstacles. Par conséquent, il est toujours nécessaire d'établir un compromis entre la fluidité, la capacité de passage, et la stabilité du BAP. Ceci doit être pris en considération afin de concevoir le processus de coulée et dosage des mélanges du BAP. Ceci est appelé la conception d'ouvrabilité du BAP. Une conception de maniabilité efficace et non coûteuse peut être achevée à travers la e prévision et l'optimisation de l'ouvrabilité des mélanges de béton pour les procédés de construction sélectionnés, notamment le transport, le pompage, la mise en place, le compactage, la finition, etc. En effet, les formulations de mélange doivent se confirmer à la qualité de la construction demandée, par exemple les niveaux exigés de fluidité, la capacité de passage, la capacité de remplissage, et la stabilité (statique et dynamique). Celui est nécessaire pour développer des outils théoriques afin d’évaluer dans quelles conditions les exigences de qualité de la construction sont satisfaites. Cette thèse est consacrée à la réaliser des simulations analytiques et numériques pour prédire la performance d'écoulement du BAP dans différents procédés de la mise en place du béton. L'objectif spécifique de cette étude consiste à simuler l'écoulement du BAP dans essais empiriques, notamment la boite en L et la boite en T pour évaluer la performance du BAP pendent la mise en place (la fluidité, la capacité de passage, la capacité de remplissage, et la ségrégation dynamique induite par cisaillement ou par gravité). Par conséquent, le BAP est modélisé comme matériau hétérogène. En outre, un modèle analytique est proposé pour prédire la performance à l'écoulement du BAP dans la boite en L en utilisant la théorie de Dam Break. D'autre part, les résultats des simulations numériques de l’écoulement du BAP dans une poutre renforcée sont comparés aux résultats expérimentaux par des profils de surface libres. Les résultats des simulations numériques de BAP coulée (modélisée comme un fluide homogène unique), sont utilisés pour déterminer les zones critiques correspondant à des risques plus élevés de ségrégation et de blocage. Les effets des paramètres rhéologiques, la masse volumique, le contenu des particules, la distribution de barres d'armature, et les interactions particule-barres sur les performances d'écoulement du BAP sont évaluées à l'aide de simulations MFN d’écoulement du BAP par les essais des L-Box et T-box (modélisée comme une matériau hétérogène). Deux nouvelles approches sont proposées pour classifier les mélanges du BAP sur la base de la capacité de remplissage, et les propriétés de performabilité, en fonction de la fluidité, la capacité de passage et de la stabilité dynamique du BAP.

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Andreatta, Evelise. "Avaliação da qualidade dos queijos Minas Frescal e tipo Mussarela produzidos com leite contendo diferentes níveis de células somáticas." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-11052006-142015/.

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O presente estudo teve por finalidade avaliar os efeitos da contagem de células somáticas (CCS) no leite cru (nos níveis de 100-200.000, 400-500.000 e >800.000 céls./mL) sobre as características físicas, químicas, microbiológicas, sensoriais e funcionais dos queijos Minas Frescal e tipo Mussarela. Utilizou-se um delineamento experimental em parcelas subdivididas em blocos, considerando-se a contagem de células somáticas como efeito principal, os dias de análise como subparcelas e os processamentos como blocos. Cada tipo de leite foi obtido da ordenha de animais previamente selecionados de acordo com o nível de células somáticas. As etapas de elaboração dos queijos incluíram a pasteurização do leite (65º C, 30 minutos), adição de cloreto de cálcio, fermento (para a Mussarela) e coalho, coagulação e obtenção do coágulo, dessoragem, salga na massa, filagem, moldagem, salga na salmoura (para a Mussarela), e embalagem dos produtos. Os queijos foram mantidos em B.O.D. a 4 ºC e avaliados nos dias 2, 9, 16, 23 e 30 após a fabricação. A seqüência de elaboração dos queijos Minas e tipo Mussarela foi repetida 5 e 3 vezes, respectivamente, para cada tratamento. As análises realizadas nos queijos foram: pH, acidez, percentuais de gordura, matéria seca (MS), cinzas, nitrogênio total (NT), nitrogênio não protéico (NNP), nitrogênio não caseinoso (NNC), índice de proteólise, ácidos graxos livres (AGL), textura, avaliação sensorial, propriedades funcionais (capacidade de derretimento a 107 ºC e percentual de óleo livre - somente no queijo tipo Mussarela), contagem de mesófilos, psicrotróficos e número mais provável a 35 e 45 ºC. No queijo Minas Frescal, não houve interação entre CCS e dias de armazenamentos nas avaliações físico-químicas, microbiológicas, funcionais e índice de lipólise, porém houve efeito significativo (P<0,05) para índices de proteólise e profundidade da proteólise. Já para mesófilos, psicrotróficos, acidez, matéria seca, firmeza e ácidos graxos livres houve efeito significativo (P<0,05) ao avaliar dias de armazenamento. A avaliação sensorial, no primeiro dia de análise, não apresentou diferença significativa nos atributos, porém o queijo de alta CCS (> 800.000 céls./mL) diferiu dos demais no dia 30, em que recebeu menor nota em todas as características. No queijo tipo Mussarela, houve interação entre CCS e dias de armazenamento apenas para a capacidade de derretimento, resultando em aumento do derretimento no decorrer do tempo. Para as características de pH, ácidos graxos livres, índices de proteólise, extensão e profundidade da proteólise, mastigabilidade e elasticidade houve efeito significativo (P<0,05) para dias de armazenamento. Entre os atributos avaliados na sensorial, apenas a aparência apresentou diferença entre tratamentos. O rendimento dos queijos, Minas frescal e tipo Mussarela, não foram influenciados pela quantidade de células somáticas dos leites. Os resultados do trabalho indicaram que o leite destinado à fabricação dos queijos Minas e tipo Mussarela deve apresentar CCS até 400-500.000 céls./mL, de maneira a evitar alterações na qualidade dos produtos ao longo do período de armazenagem.
The aim of the present study was to evaluate the effect of somatic cells counts (SCC) in raw milk (at levels of 100-200,000, 400-500,000 and 800,000 cells./mL) on physical, chemical, microbiological, sensorial and functional characteristics of Minas frescal and Mozzarella type cheeses. A completely randomized block design was used, considering SCC as the main effect, the days of analysis as sub parcels and the processing batches as the blocks. Each type of milk was obtained from cows previously selected according to its individual SCC. The manufacture of cheeses included: pasteurization of milk (65ºC, 30 minutes), addition of calcium chloride, starter culture (for Mozzarella) and rennet, coagulation and separation of the curd, whey drainage, salting (for Minas cheese), stretching of the curd, kneading and salting in brine (for Mozzarella), and packing the products. The cheeses were stored in a B.O.D. oven at 4ºC and evaluated on days 2, 9, 16 23 and 30 after the manufacture. The sequence of elaboration of the Minas frescal and Mozzarella cheeses was repeated 5 and 3 times, respectively, for each treatment. The analyses carried out in the cheeses were: pH, acidity, percentages of fat, dry matter (DM), ashes, total nitrogen (NT), non-protein-nitrogen (NPN), non-casein nitrogen (NCN), proteolysis, free fatty acids (FFA), texture, sensorial evaluation, functional properties (melting capacity the 107 ºC and percentage of free oil - only in the cheese Mozzarella), mesophile and psychrotrophic counts and the most probable number at 30 and 45ºC. For Minas frescal cheese, no interaction was found between SCC and days of storage when considering the data on chemical, physical, microbiological, functional and lipolysis index. However, a significant effect (P<0.05) was observed for proteolysis and depth of proteolysis. For mesophiles, psychrotrophics, acidity, dry matter, firmness and free fatty acids, there was a significant effect (P<0.05) for days of storage. The sensorial evaluation made on the first day of analysis did not present significant differences for all attributes. However, the Minas cheese made with high SCC (800,000 cells/mL) differed on day 30, when it received worse grades for all the attributes. For the Mozzarella cheese, an interaction between SCC and days of storage was observed only for the melting capacity, which resulted in an increment of the melting along the time of storage. The parameters of pH, free fatty acid, proteolysis, extension and depth of proteolysis, springiness and elasticity had significant effect (P<0.05) for days of storage. Amongst the attributes evaluated in the sensorial, only the appearance presented difference between treatments. The yield of Minas frescal and Mozzarella cheese was not influenced by the amount of somatic cells in the original milk. Results indicated that milk used for the manufacture of Minas frescal and Mozzarella cheeses should present SCC up to 400-500,000 cells/mL, in order to avoid quality changes in those products during storage.

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Wilhelm, Tobias. "Wasserstoffinduzierte Spannungsrisskorrosion." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-166133.

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Bei dem Prozess einer Wasserstoffinduzierten Spannungsrisskorrosion (H-SpRK) handelt es sich um einen zeitabhängigen Vorgang, der zu einer Reduzierung der Duktilität und Widerstandskraft des Spannstahls führt und daraus resultierend ein sprödes und schlagartiges Versagen eines Spannbetonbauwerkes zur Folge haben kann. Der Prozess selbst und insbesondere auch die ihn beeinflussenden Parameter sind für die im Bauwesen verwendeten hochfesten Spannstähle älterer Produktion weitestgehend unerforscht. Die Relevanz für bestehende Bauwerke ist jedoch nicht zuletzt durch einzelne dokumentierte und untersuchte Schadensfälle nachgewiesen. Ziel der vorliegenden Arbeit war es, die zur Verfügung stehenden Bauwerksuntersuchungen aus den zurückliegenden ca. 10 Jahren statistisch zu analysieren und auszuwerten. Auf dieser Basis war ein Berechnungsmodell wahrscheinlichkeitstheoretischer Basis zu entwickeln, mit dem die Gefahr eines spröden Bauwerksversagens für das Gesamttragwerk beurteilt und hinsichtlich der Auswirkungen auf das einzuhaltende Sicherheitsniveau bewertet werden kann. Es wurden insgesamt 31 Bauwerksuntersuchungen statistisch ausgewertet und beurteilt. Die zur Verfügung stehenden Daten wurden analysiert und hinsichtlich der Prüfqualität sowie der Quantität der Proben bewertet. Dabei war festzustellen, dass aufgrund fehlender konkreter Vorgaben im Regelwerk eine sehr heterogene Datenbasis vorliegt. Nicht alle Untersuchungsergebnisse konnten in die weitere Auswertung einbezogen werden. Die in ausreichender Datenqualität und Datenumfang geeigneten Untersuchungen wurden hinsichtlich ihrer Relevanz für den Prozess einer H-SpRK analysiert und die Auswirkungen einzelner Parameter bewertet. Im Ergebnis der materialtechnischen Untersuchungen und statistischen Auswertung der Bauwerksuntersuchungen wurde ein Berechnungsmodell vorgestellt, das den gleichzeitigen Ausfall von Spannstahl in allen Bereichen des Bauwerkes berücksichtigt. Zusätzlich zum Standardverfahren des beschriebenen Vorgehens wird das Modell um den Ansatz eines korrelierten Spannstahlausfalls erweitert. Außerdem wird für Bauwerke mit einem statisch unbestimmten Anteil der Vorspannung sowie für Konstruktionen mit gestaffelter Spannstahlbewehrung die Anwendung des Verfahrens konkretisiert. Neben der Erstellung des Berechnungsmodells wurden Vorschläge zu Vorgaben für die Bauwerksprüfung vorgestellt. Dazu zählen insbesondere die Festlegung von Prüfintervallen sowie einheitliche Vorgaben zu den verwendeten Prüfmethoden und -verfahren. Bezüglich der Festlegung von Mindestumfängen von Proben wird zwischen bestehenden und auch weiter zu nutzenden Bauwerken einerseits sowie Probennahmen im Rahmen von Rückbaumaßnahmen unterschieden.

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Kahloul, Senda. "Analyse structurale et fonctionnelle de la sous-unité SKP1 du complexe SCF (Skp1-Cullin-Fbox) chez le riz (Oryza sativa)." Thesis, Clermont-Ferrand 2, 2012. http://www.theses.fr/2012CLF22326/document.

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Chez les eucaryotes, la voie de protéolyse Ub/ protéasome 26S est responsable de la dégradation sélective de la plupart des protéines intracellulaires. Cette dégradation par le protéasome 26S est initiée par une polyubiquitination de la protéine réalisée grâce à l’action d’une cascade enzymatique impliquant 3 types d'enzymes nommées « ubiquitin-activating enzyme » (E1), « ubiquitin-conjugating enzyme » (E2) et « ubiquitin-protein ligase » (E3). Il existe différentes classes d’ubiquitines ligases (E3), parmi lesquelles la plus connue est le complexe SCF (Skp1-Cullin-F-box). La protéine SKP1 fixe à la fois la Culline et la F-box qui va reconnaitre spécifiquement la protéine cible. Contrairement aux protistes, les champignons et certains vertébrés qui possèdent un unique gène SKP1 fonctionnel, de nombreux animaux et espèces de plantes présentent plusieurs SKP1 homologues. Vingt et un et trente deux gènes SKP1 ont été décrits respectivement chez Arabidopsis thaliana et Oryza sativa. En dépit de l’importance du complexe SCF, chez le riz, peu de travaux décrivent les interactions entre les dizaines de protéines « SKP1-like » et les centaines de protéines F-box. Dans un premier temps, nous avons collecté et analysé les séquences de 288 gènes « SKP1-like » appartenant à 17 espèces, dont la mousse Physcomitrella patens, cinq monocotylédones et 11 eudicotylédones. Les analyses structurales et phylogénétiques de ces gènes indiquent qu’ils peuvent être divisés en différentes sous-familles. Nos analyses ont montré qu’OSK1 et OSK20 chez le riz constituent une classe de gènes SKP1 à intron unique conservé. Dans un deuxième temps, nous avons étudié le profil d’expression des gènes « SKP1-like » chez le riz. Notre investigation sur le nombre d’EST a montré que les gènes OSK1 et OSK20 sont les plus largement représentés dans les bases de données EST publiques. La méta-analyse de l’expression des gènes « SKP1-like » chez le riz, indique que les gènes OSK présentent des profils d'expression hétérogènes selon les tissus et les conditions physiologiques. Les résultats des intearctions protéine-protéine en double hybride ont révélé que les protéines OSK présentent différentes capacités d’interactions avec les protéines F-box. Cependant, OSK1 et OSK20 semblent interagir avec la plupart des protéines F-box testées. Les études de localisation subcellulaire ont indiqué que OSK1 et OSK20 sont des protéines nucléaires et cytosoliques. En se basant sur les divers résultats obtenus dans ce travail, nous pouvons suggérer que chez le riz, les gènes OSK1 et OSK20 sont fonctionnellement équivalents aux gènes ASK1 et ASK2 chez Arabidopsis thaliana. Nous pouvons également proposer les équivalents de ces gènes chez les autres espèces végétales dont le génome a été séquencé
In eukaryotes, the ubiquitin Ub/26S proteasome pathway is responsible for the selective degradation of most intracellular proteins. This cellular process is initiated by protein polyubiquitination mediated by a three-step cascade involving: an ubiquitin-activating enzyme (E1), an ubiquitin-conjugating enzyme (E2) and an ubiquitin-protein ligase (E3). The E3 ubiquitin ligases contain several classes, among which the best-known are Skp1-Cullin-F-box (SCF) complexes. The SKP1 protein binds both Cullin and F-box which recognizes specifically the target proteins. Whereas protists, fungi and some vertebrates have a single functional SKP1 gene, many animal and plant species possess multiple SKP1 homologues. Twenty one and thirty-two SKP1-related genes have been described respectively in the Arabidopsis and Oryza sativa genome. Despite the importance of the SCF complex, there have been a few reports of systematic surveys of interactions between the dozens of SKP1-like proteins and the hundreds of F-box proteins in rice. In a first step, we retrieved and analyzed 288 SKP1-like genes belonging to 17 species including the moss Physcomitrella patens, five monocots and 11 eudicots. Structural and phylogenetic analysis of rice OSK genes and other plant SKP1-like genes have indicated that the different members of the plant SKP1 can be split into different subfamily. Our analyses indicated that OSK1 and OSK20 belong to a class of SKP1 genes that contain one intron at a conserved position. In a second step, we studied expression profiles of the rice Skp1-like genes. Our EST survey indicated that OSK1 and OSK20 are the most widely represented genes in public EST databases. Meta-analysis of the expression of rice SKP1-like genes indicated that OSK genes exhibit an expression profile that was heterogeneous in terms of tissues, conditions and overall intensity. Yeast two-hybrid results revealed that OSK proteins display a differing ability to interact with F-box proteins. However, OSK1 and OSK20 seemed to interact with most F-box proteins tested. Subcellular localization studies indicated that OSK1 and OSK20 are nuclear and cytosolic proteins. Based on the results obtained in this study, we can suggest that rice OSK1 and OSK20 are likely to have similar functions as do the Arabidopsis ASK1 and ASK2 genes. Similarly, we suggest a list of functional equivalent in the other sequenced plant genomes

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Wait, Requier. "An economic analysis of the 2007 SCB conference." Thesis, Nelson Mandela Metropolitan University, 2010. http://hdl.handle.net/10948/1131.

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The Society for Conservation Biology held their 21st annual conference in Port Elizabeth during July 2007. This was the first SCB conference hosted on the African continent. Over 1500 conservation professionals and students from throughout the world were brought together by the SCB annual meeting. The local organizing committee was interested in the economic impacts associated with the conference and approached the NMMU Economics Department to conduct an economic impact assessment of the conference. The Economics Department invited the researcher to undertake this study towards obtaining an MCom degree in Economics. The economic impact of conferences stems from two sources, namely: expenditure by delegates (the demand-side) and the expenditure by conference organizers (the supply-side). The study focused on the economic impacts of the conference for the Eastern Cape. The conference expenditure produced an increase in demand in the Eastern Cape. Only new expenditure originating from outside the Eastern Cape were considered. An increase in the demand for one industry’s output will create additional demand for the outputs of its supplying industries, because industries are connected through forward and backward linkages. These inter-industry linkages produce a multiplier effect. The initial direct conference expenditure created secondary impacts. The latter were indirect and induced expenditures. In addition to secondary impacts, the SCB conference produced spill-over impacts. The spill-over impacts of the conference were noted (but not quantified). The expenditure by delegates was determined by means of a delegate expenditure questionnaire conducted during the conference. The expenditure by the conference organizers was determined in consultation with the organizers, using their financial statements. The multiplier impacts were estimated by means of an input-output (IO) analysis, using a Social Accounting Matrix (SAM) of the Eastern Cape as the underlying database. These multipliers (Type 1 and 2 multipliers) were estimated using open and closed multiplier models. It was deduced that the 2007 SCB conference created a significant and positive net economic impact in the Eastern Cape. The total direct cash injection of the conference was R12.141 million. Using a Type 1 multiplier this direct stimulus is estimated to have caused an extra R16.502 million increase in gross output. Using a Type 2 multiplier this direct stimulus was estimated to have caused a R19.884 million increase in gross output. The total cash injection of the conference contributed R6.093 million to GVA in terms of a Type 1 multiplier and a R7.344 million increase in GVA in terms of a Type 2 multiplier. Household incomes in the Eastern Cape were increased by R3.384 million. These results confirm that the hosting of major events and conferences is indeed a tool for promoting regional economic development.

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Khop, Vojtěch. "Analýza SCM ve vybraném podniku." Master's thesis, Vysoká škola ekonomická v Praze, 2015. http://www.nusl.cz/ntk/nusl-261789.

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The thesis deals with an evaluation of supply chain management and other processes involved in customer requirements management of a selected company. The aim of the thesis is to describe and evaluate processes of all the company´s sections involved. The first part presents basic terminology, followed by theoretical part dealing with presentation of the company. Individual sections are described and set processes are evaluated. In case of deficiencies, corrective measures are proposed. The last chapter includes a SWOT analysis.

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Dudek, Paul Thomas Lowe Michael R. "An examination of the factor structure of the SCI-PANSS /." Philadelphia, Pa. : Drexel University, 2006. http://dspace.library.drexel.edu/handle/1860/756.

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Müller, Michael. "Retrieval and Analysis of Software Systems from SCM Repositories." Thesis, Växjö University, School of Mathematics and Systems Engineering, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:vxu:diva-1603.

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One source of input data for software evolution research is data stored inside a software configuration management repository. The data includes different versions of a software system’s source code as well as version history metadata, such as check-in dates or log messages. Inherently, extracting this data manually is a time- and labor intensive task. The subsequent preprocessing step and the appropriate storage of the results, necessary to utilize the data for further analysis, is an additional effort for the researcher.

The goal of this thesis is to design and implement a front-end plug-in for an existing software comprehension tool, the VizzAnalyzer, providing the capability to extract and analyze multiple versions and evolutional information of software systems from SCM repositories and to store the results. Thereby, the implemented solution provides the infrastructure for software evolution research.

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Hu, Tianyuan [Verfasser]. "Analysis of SCF+ cardiac cells in mice / Tianyuan Hu." Bonn : Universitäts- und Landesbibliothek Bonn, 2018. http://d-nb.info/1167857127/34.

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Книги з теми "SCC ANALYSIS"

McCallum, Dulcie. The equality rights of people who have an intellectual disability: An analysis of the imnpact of law v. Minister of Human Resources Development (1999), 170(4th) 1(SCC). North York, Ont: Canadian Association for Community Living, 2001.

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Berber Sardinha, Tony, and Marcia Veirano Pinto, eds. Multi-Dimensional Analysis, 25 years on. Amsterdam: John Benjamins Publishing Company, 2014. http://dx.doi.org/10.1075/scl.60.

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Díaz-Negrillo, Ana, Nicolas Ballier, and Paul Thompson, eds. Automatic Treatment and Analysis of Learner Corpus Data. Amsterdam: John Benjamins Publishing Company, 2013. http://dx.doi.org/10.1075/scl.59.

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Zimmerman, Carroll L. Insider at SAC: Operations analysis under General LeMay. Manhattan, KS: Sunflower University Press, 1988.

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Hudak, Gregory B. The SCA statistical system: Reference manual for general statistical analysis. River Forest, Ill: Scientific Computing Associates, 2004.

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Liu, Lon-Mu. Forecasting and time series analysis using the SCA statistical system. River Forest, Ill: Scientific Computing Associates, 2004.

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Nielsen, Barbara Stock. Analysis of the S.C. Accountability Act & No Child Left Behind. [Clemson, S.C.]: Strom Thurmond Institute, 2003.

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Nielsen, Barbara Stock. FY-04 budget analysis, the S.C. Accountability Act & No Child Left Behind. [Clemson, S.C.]: Strom Thurmond Institute, 2003.

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1939-, Provder Theodore, and American Chemical Society Meeting, eds. Chromatography of polymers: Hyphenated and multidimensional techniques. Washington, D.C: American Chemical Society, 1999.

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Jungian reflections within the cinema: A psychological analysis of sci-fi and fantasy archetypes. Westport, Conn: Praeger, 1998.

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Beneš, Nikola, Luboš Brim, Samuel Pastva, and David Šafránek. "Symbolic Coloured SCC Decomposition." In Tools and Algorithms for the Construction and Analysis of Systems, 64–83. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72013-1_4.

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AbstractProblems arising in many scientific disciplines are often modelled using edge-coloured directed graphs. These can be enormous in the number of both vertices and colours. Given such a graph, the original problem frequently translates to the detection of the graph’s strongly connected components, which is challenging at this scale.We propose a new, symbolic algorithm that computes all the monochromatic strongly connected components of an edge-coloured graph. In the worst case, the algorithm performs $$O(p\cdot n\cdot \log n)$$ O ( p · n · log n ) symbolic steps, where p is the number of colours and n the number of vertices. We evaluate the algorithm using an experimental implementation based on Binary Decision Diagrams (BDDs) and large (up to $$2^{48}$$ 2 48 ) coloured graphs produced by models appearing in systems biology.

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Somenzi, Fabio, Kavita Ravi, and Roderick Bloem. "Analysis of Symbolic SCC Hull Algorithms." In Formal Methods in Computer-Aided Design, 88–105. Berlin, Heidelberg: Springer Berlin Heidelberg, 2002. http://dx.doi.org/10.1007/3-540-36126-x_6.

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Larsen, Casper Abild, Simon Meldahl Schmidt, Jesper Steensgaard, Anna Blume Jakobsen, Jaco van de Pol, and Andreas Pavlogiannis. "A Truly Symbolic Linear-Time Algorithm for SCC Decomposition." In Tools and Algorithms for the Construction and Analysis of Systems, 353–71. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-30820-8_22.

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AbstractDecomposing a directed graph to its strongly connected components (SCCs) is a fundamental task in model checking. To deal with the state-space explosion problem, graphs are often represented symbolically using binary decision diagrams (BDDs), which have exponential compression capabilities. The theoretically-best symbolic algorithm for SCC decomposition is Gentilini et al’s $$\textsc {Skeleton}$$ S K E L E T O N algorithm, that uses O(n) symbolic steps on a graph of n nodes. However, $$\textsc {Skeleton}$$ S K E L E T O N uses $$\Theta (n)$$ Θ ( n ) symbolic objects, as opposed to (poly-)logarithmically many, which is the norm for symbolic algorithms, thereby relinquishing its symbolic nature. Here we present $$\textsc {Chain}$$ C H A I N , a new symbolic algorithm for SCC decomposition that also makes O(n) symbolic steps, but further uses logarithmic space, and is thus truly symbolic. We then extend $$\textsc {Chain}$$ C H A I N to $$\textsc {ColoredChain}$$ C O L O R E D C H A I N , an algorithm for SCC decomposition on edge-colored graphs, which arise naturally in model-checking a family of systems. Finally, we perform an experimental evaluation of $$\textsc {Chain}$$ C H A I N among other standard symbolic SCC algorithms in the literature. The results show that $$\textsc {Chain}$$ C H A I N is competitive on almost all benchmarks, and often faster, while it clearly outperforms all other algorithms on challenging inputs.

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Li, Lijun, Rui Chi, and Yusou Liu. "The Data Visualization Analysis in Global Supply Chain Resilience Research During 2012–2022." In Services Computing – SCC 2022, 1–11. Cham: Springer Nature Switzerland, 2022. http://dx.doi.org/10.1007/978-3-031-23515-3_1.

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Wallevik, Jon Elvar, Wassim Mansour, and Olafur Haralds Wallevik. "Computational Segregation Analysis During Casting of SCC." In RILEM Bookseries, 652–59. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22566-7_76.

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Yajima, Zenjiro, Masaaki Tsuda, Yukio Hirose, and Keisuke Tanaka. "Residual Stresses Near SCC Fracture Surfaces of AISI 4340 Steel." In Advances in X-Ray Analysis, 451–58. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4757-9110-5_55.

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Gui, Lin, Jun Sun, Songzheng Song, Yang Liu, and Jin Song Dong. "SCC-Based Improved Reachability Analysis for Markov Decision Processes." In Formal Methods and Software Engineering, 171–86. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-11737-9_12.

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Xie, Caibo, Songhan Nie, Yiqi Tao, and Zhanpeng Lu. "Correlating IASCC Growth Rate Data to Some Key Parameters for Austenitic Stainless Steels in High Temperature Water." In Springer Proceedings in Physics, 1060–72. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-1023-6_89.

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AbstractAustenitic stainless steels have been widely used for fabricating reactor core-internal components in PWRs due to its high strength, ductility and fracture toughness. The accelerated failure or degradation of austenitic stainless steel represented by IASCC has become one of the key problems affecting the safe and efficient operation of reaction core-internal in PWR nuclear power plants. IASCC is generally divided into three stages: crack initiation, crack propagation and instable fracture. Among the three stages, the crack initiation stage would occupy the major service time, the crack growth stage is featured by quasi-steady crack propagation at a certain rate, and the instable fracture stage should be avoided. Stress intensity factor K at the crack tip is often used to represent the mechanical driving force for SCC as well as IASCC.In this paper, SCC crack growth rate (CGR) data of austenitic stainless steels irradiated in high temperature water were compiled and reanalyzed to evaluate the influence of key parameters such as radiation dose and mechanical properties on IASCC sensitivity and crack growth rate of these materials in PWR nuclear power plant environment. The CGR-K curves of the irradiated materials were also analyzed. The effects of low, medium and high doses of neutron irradiation are compared, and the analysis process is illustrated with examples. In the research process, abnormal CGR and K of materials under a specific irradiation dose was found, so this phenomenon was analyzed. The CGR data and irradiation dose of austenitic stainless steel in different K range were analyzed. And proposed a way to judge the type of change:type I, type II and type III. Finally, the yield strength of the material under the same irradiation dose was found, and combined with other research data, it was further demonstrated that the neutron irradiation dose had a significant effect on the crack growth rate.

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Kim, Sung-Woo, Hong-Pyo Kim, Seong-Sik Hwang, Dong-Jin Kim, Joung-Soo Kim, Yun-Soo Lim, Sung-Soo Kim, and Man-Kyo Jung. "6 Stochastic approach to electrochemical noise analysis of SCC of Alloy 600 SG tube in caustic environments at high temperature*." In Corrosion monitoring in nuclear systems: research and applications, 81–95. Boca Raton London New York: CRC Press, 2017. http://dx.doi.org/10.1201/9781315140391-7.

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Ouladj, Maamar, and Sylvain Guilley. "SCA Countermeasures." In Side-Channel Analysis of Embedded Systems, 35–46. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-77222-2_4.

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Тези доповідей конференцій з теми "SCC ANALYSIS"

Ogawa, Naoki, Kiminobu Hojo, Do-Jun Shim, and Kazuo Ogawa. "Sensitivity Analysis of SCC Crack Extension Simulation." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57454.

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For the preliminary investigation of realistic SCC crack extension behavior, several crack extension simulation methods were applied to example problems. As for a mesh division procedure, two kinds of methods were employed. One is a conventional one which needs new mesh generation of finite element (FE) models following crack extension and the other one is X-FEM without new FE mesh generation. Also the effects of crack extension contained within the weld material and the crack growth rate dependence on the crack extension direction at the weld joint were considered. Under hypothetical liner stress distribution, the stress intensity factors from the FE analyses by the conventional mesh division procedure and X-FEM agreed well with those from the stress intensity factor K equations of a hand book in the case of semi-elliptical and semi circular cracks. As for the crack extension analysis, consideration of the direction dependent crack growth rate and limited crack extension within the hypothetical shaped weld groove boundary gave a large effect on the crack extension amount in the thickness direction.

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Mattson, Timothy G., Michael Riepen, Thomas Lehnig, Paul Brett, Werner Haas, Patrick Kennedy, Jason Howard, et al. "The 48-core SCC Processor: the Programmer's View." In 2010 SC - International Conference for High Performance Computing, Networking, Storage and Analysis. IEEE, 2010. http://dx.doi.org/10.1109/sc.2010.53.

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Alreshedy, Kamel, Dhanush Dharmaretnam, Daniel M. German, Venkatesh Srinivasan, and T. Aaron Gulliver. "[Engineering Paper] SCC: Automatic Classification of Code Snippets." In 2018 IEEE 18th International Working Conference on Source Code Analysis and Manipulation (SCAM). IEEE, 2018. http://dx.doi.org/10.1109/scam.2018.00031.

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Gschwandtner, Philipp, Thomas Fahringer, and Radu Prodan. "Performance Analysis and Benchmarking of the Intel SCC." In 2011 IEEE International Conference on Cluster Computing (CLUSTER). IEEE, 2011. http://dx.doi.org/10.1109/cluster.2011.24.

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Riccardella, Scott, Owen Malinowski, Pete Riccardella, Steve Potts, Sean Moran, Kelly Thompson, and Ann Reo. "Probabilistic Analysis Applied to the Risk of SCC Failure." In 2022 14th International Pipeline Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/ipc2022-86906.

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Abstract This paper discusses a model developed and applied to evaluate the probability of Stress Corrosion Cracking (SCC) failure in a large gas pipeline system spanning approximately 8,500 miles. A machine learning algorithm (neural network) was applied to the system, which has experienced nearly 500 prior instances of SCC. Subject matter experts were interviewed to help identify key system factors that contributed to the prevalence of SCC and these factors were incorporated in the neural network algorithm. Key factors such as coating type, vintage, operating stress as a percentage of SMYS, distance to compressor station, and seam type were evaluated in the model for correlation with SCC occurrence. A Bayesian analysis was applied to ensure the model aligned with the prevalence of SCC encountered. A Probabilistic Fracture Mechanics (PFM) model was then applied to relate the probability of SCC existing to the probability of rupture.

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Lam, Tony C. T., and Robert Dewey. "Probabilistic Analysis of Turbine Disc SCC Incubation and Propagation." In 2002 International Joint Power Generation Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ijpgc2002-26156.

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Stress corrosion cracking (SCC) is a common problem found on aging low-pressure turbine (LP) rotors that operate in a wet/dry stream environment. While much has been published on the growth rate of SCC in turbine rotor-disk materials, incubation time is rarely addressed. Since no effective way has been demonstrated to prevent disk rim SCC from occurring other than to replace the damaged rim with a weld repair of higher chromium content, a better understanding of incubation time could provide operators with a means to treat SCC before cracks are large enough to start to grow. This paper discusses the critical mechanisms involved in the SCC incubation, process and describes a probabilistic approach to make meaningful assessments of incubation time. Data published for General Electric turbine rotors is used to test the model.

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Leis, Brian, Yong-Yi Wang, Amin Eshraghi, Steve Rapp, and Gary Vervake. "Some Practical Benefits of Detailed Forensic Analysis." In 2022 14th International Pipeline Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/ipc2022-87028.

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Abstract Integrity threats can be difficult to manage in cases where the condition assessment leads to sometimes uncertain results, and/or the mechanisms affecting that condition are complex, and so are sometimes poorly characterized. Clarity in such cases derives from forensic analysis, as illustrated in this paper, which presents and discusses such work to: 1) better understand the scope and nature of the threat involved, 2) quantify a case-specific speed of crack growth, 3) establish the viability of the predictive tools being used, and 4) establish whether a once active threat had been effectively dealt with by the operational and maintenance changes that were made to manage it. The results of two recent laboratory hydrotests are summarized concerning pups containing SCC colonies, as are the details of forensic analyses of the cracking exposed by that testing. The high-level goals were to: establish the form(s) of SCC active on the pipeline; quantify its average cracking speed (ACS) relative to published guidance; and determine whether the changes that had been made to manage that SCC had proven effective through evidence of dormant cracking. Fractography and metallography done to identify traits characteristic of SCC clearly showed intergranular features and other key traits of high-pH cracking. As expected, the SCC colonies showed a wide range of crack sizes. The fractography also showed clear evidence of a prior hydrotest that along with other benchmarks over time led to a case-specific ACS, which was slower than published industry guidance. Comparison of predictions concerning failure pressure and other aspects made prior to the hydrotests established the viability of the predictive tools that had been used. Finally, indicators of dormancy such as heavily corroded intergranular features that continued down secondary cracking were used to establish that the SCC local to the dig sites considered had been mitigated.

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Nikishkov, Gennadiy, Jane W. Z. Lu, Andrew Y. T. Leung, Vai Pan Iu, and Kai Meng Mok. "Combined Finite- and Boundary-Element Analysis of SCC Crack Growth." In PROCEEDINGS OF THE 2ND INTERNATIONAL SYMPOSIUM ON COMPUTATIONAL MECHANICS AND THE 12TH INTERNATIONAL CONFERENCE ON THE ENHANCEMENT AND PROMOTION OF COMPUTATIONAL METHODS IN ENGINEERING AND SCIENCE. AIP, 2010. http://dx.doi.org/10.1063/1.3452270.

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Moreland, Kenneth, Brad King, Robert Maynard, and Kwan-Liu Ma. "Flexible Analysis Software for Emerging Architectures." In 2012 SC Companion: High Performance Computing, Networking, Storage and Analysis (SCC). IEEE, 2012. http://dx.doi.org/10.1109/sc.companion.2012.115.

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Lehner, Petr, Petr Konečný, and Tomasz Ponikiewski. "Experimental and numerical evaluation of SCC concrete durability related to ingress of chlorides." In INTERNATIONAL CONFERENCE OF NUMERICAL ANALYSIS AND APPLIED MATHEMATICS (ICNAAM 2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5043803.

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Звіти організацій з теми "SCC ANALYSIS"

Beavers and Johnson. L51871 SCC Field Data Collection. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), January 2000. http://dx.doi.org/10.55274/r0011178.

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The original objectives of PRCI project PR 186-9506 were: (1) to establish a standard protocol for the collection of field data on SCC, (2) to instruct field engineers and technicians from the pipeline companies to insure that the protocol is used properly, and (3) to establish and maintain a data base for the compilation and analysis of the field data. The program was divided into three Tasks: Task 1 - Protocol Development, Task 2 - Protocol Training, and Task 3 - Data Base Development and Management. In the final scope of work, the PRCI Committee canceled Task 3 of the project.

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Leis and Walsh. L51575 Mechanics-Based Analysis of SCC in a Carbonate-Bicarbonate Environment. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), August 1988. http://dx.doi.org/10.55274/r0010306.

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Stress-corrosion cracking (SCC) occurs occasionally in line-pipe steels. Reviews of this cracking indicate that the environment is carbonate-bicarbonate and that the cracking is primarily intergranular. Research sponsored by the PRCI Line Pipe Research Supervisory Committee (LPRSC) has over the years identified metallurgical and electrochemical parameters as playing a role in the process. This work has also argued the significance of strain rate and its relationship to the service loading, given that dissolution is indicated as the controlling mechanism. While much has been learned about the mechanism of cracking, very little has been learned about how to directly relate the nucleation and growth of cracks to the loading, the metallurgy, and the environmental parameters. The continual development of new line-pipe steels, the probable development of reliable in-line inspection (ILI) tools to detect SCC, and the occasional discovery of cracking colonies during field surveys have recently centered attention on methods to rank line-pipe resistance to SCC and characterize crack-growth rates. Ranking line-pipe resistance to SCC may be done in terms of a threshold stress for nucleation of SCC or the rate of crack growth at some crack depth beyond nucleation. Estimating remaining life of cracks located by an ILI tool or confirmed in a field survey involves only crack growth rate data or data that define a threshold stress for continued growth. Recent attention of the SCC subgroup of the LPRSC, therefore, has focussed on experimental protocols to assess susceptibility, determine thresholds, and establish growth rate behavior. The tapered-tension test (TTT) has been developed to determine stress thresholds for crack nucleation, whereas several different prenotched or precracked geometries have been or are now being used to assess crack growth. Attention has also focussed on modelling SCC thresholds and crack growth behavior so that data developed under laboratory conditions can be adapted to assess field cracking situations. Models are being explored for both threshold and crack-growth conditions. This report presents the development and validation for a model that is being adapted to line-pipe problems for the SCC subgroup. This model deals with the threshold for and the growth of SCC cracks up to about 0.020-inch deep.

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Beavers. L51897 Cathodic Protection Conditions Conducive to SCC. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), October 2002. http://dx.doi.org/10.55274/r0010193.

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The objective of this research project was to define pipeline conditions where use of the 100 mV polarization criterion may be conducive to possible SCC problems. Each of the controlling conditions for the two recognized forms of SCC (high pH SCC and near neutral pH SCC) was examined, using a combination of analysis of previous research results, analysis of unpublished field data, and laboratory testing. In the original proposal, it was not planned to analyze field data but the data became available and the analysis has yielded some significant findings. The results of the literature survey, the analysis of the soil and electrolyte data from the SCC field digs, and the testing performed in this project all indicate that cathodic protection is generally beneficial in mitigating near-neutral pH SCC. Furthermore, the only testing reported in the literature, which suggests that cathodic protection is detrimental to this form of cracking, was performed under unrealistic conditions where cathodic polarization was applied to pipe steel samples containing growing cracks, but the beneficial environmental polarization that accompanies cathodic protection was not allowed to occur. One conclusion from this current research is that it is not necessary to consider the near neutral pH form of cracking in the selection of the CP criterion.

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Hart and Jaske. L51957 Permanent Field Repair of SCC - Review. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), November 2004. http://dx.doi.org/10.55274/r0011271.

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Implementing an engineering critical assessment (ECA) to guide the SCC flaw disposition is a valuable tool operators have in making a repair decision. When SCC is found by inspection, the effect of this cracking on failure stress and remaining life must be evaluated to decide what action should be taken � continued operation, type of repair, or replacement. This is not widely practiced in industry because of either the unfamiliarity of the analysis or the costs involved. One option considered during this research project was to have operators conduct a generic ECA on their entire line ahead of time, which can be used in the assessment process if SCC is found at a later date. Performing an ECA often demonstrates that a less conservative repair option than what is typically selected by the operator is acceptable for certain SCC defects. A generic repair procedure was developed for this study. The applicable repair techniques depend on the degree of severity of SCC.

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Felix, Meier, Wilfried Rickels, Christian Traeger, and Martin Quaas. Working paper published on NETs in strategically interacting regions based on simulation and analysis in an extended ACE model. OceanNets, 2022. http://dx.doi.org/10.3289/oceannets_d1.5.

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Net-zero climate policies foresee deployment of atmospheric carbon dioxide removal wit geological, terrestrial, or marine carbon storage. While terrestrial and geological storage would be governed under the framework of national property rights, marine storage implies that carbon is transferred from one global common, the atmosphere, to another global common, the ocean, in particular if storage exceeds beyond coastal applications. This paper investigates the option of carbon dioxide removal (CDR) and storage in different (marine) reservoir types in an analytic climate-economy model, and derives implications for optimal mitigation efforts and CDR deployment. We show that the introduction of CDR lowers net energy input and net emissions over the entire time path. Furthermore, CDR affects the Social Cost of Carbon (SCC) via changes in total economic output but leaves the analytic structure of the SCC unchanged. In the first years after CDR becomes available the SCC is lower and in later years it is higher compared to a standard climate-economy model. Carbon dioxide emissions are first higher and then lower relative to a world without CDR. The paper provides the basis for the analysis of decentralized and potentially non-cooperative CDR policies.

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Rose and Luo. L52069 Guided Wave Sizing and Discrimination for SCC Magnetostriction ILI Inspection. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), January 2003. http://dx.doi.org/10.55274/r0011179.

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With the goal to be able to inspect a large area of the pipe from a single sensor position, hence the development of what we call guided wave inspection. From one point on the circumference of the pipe, it is therefore proposed to inspect the entire circumferential area of the pipe. This approach leads to inspection efficiency.� Experimental techniques cannot be developed on a trial and error basis. The purpose of this work is therefore to develop a guided wave propagation model and subsequent numerical solutions to assist in the �theoretically driven� sensor design and data acquisition systems for improved nondestructive testing including defect detection, location, and potential classification and sizing analysis in a pipe.

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Hair. L52003 Application of the Crack Layer Theory for Understanding and Modeling of SCC in High Pressure. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), August 2003. http://dx.doi.org/10.55274/r0010893.

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A stochastic features of SCC colony, such as corrosion pit distribution, SC crack initiation from the pits and SC crack aspect ratio, SC crack cluster formation, SC cluster interaction and instability, are observed and characterized. A concept of a single crack equivalent to a cluster of cracks is introduced to simplify computational work on clusters evolution and instability. Various criteria of equivalence for different stages of clusters evolution are discussed. An accelerated test with a number of accelerating factors has been designed and performed for simulation of individual SC crack growth. Corrosion products at each stage of single crack propagation are investigated by means of Raman and FTIR analysis. The crack layer theory is adopted for modeling of SC crack growth. It provides the formalism for modeling of the effect of such processes as electro-chemical reactions, hydrogen embrittlement, and mechanical loading rates on crack growth rate. Finally, a computer simulation of SC crack growth was performed and validated by the available set of experimental data.

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Leis and Mohan. L51803 Failure Criterion for Stress-Corrosion Cracking in Pipelines. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), September 1995. http://dx.doi.org/10.55274/r0010327.

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Failures due to stress-corrosion cracking (SCC) generally involve several adjacent, parallel, deep cracks that because of their proximity coalesce to form long flaws, which can cause ruptures.Recent studies indicate that such multiple flaws cause a local increase in compliance as compared to a single crack that represents the largest of the cracks involved.This means that the failure pressure for such a group of cracks can be poorly represented by a single flaw failure criterion, such as the Pipe Axial Flaw Failure Criterion (PAFFC) developed for the Pipeline Research Council International, Inc. The objective of this project was to develop a failure criterion for the multiple flaw situations typical of SCC based on available literature data for a repeating pattern of cracks (a regular array of cracks). This report begins with a discussion of predicted failure pressures for several typical field failures due to SCC. This discussion clearly demonstrates significant errors in predicted failure pressure for the multiple cracking typical of SCC when the failure pressure is predicted in terms of available single-flaw failure criteria for part-through-wall flaws in pipelines. This is followed by an analysis based on available literature data. It is shown that the literature data fail to represent the essential features of typical patches of cracks that control SCC failures. Analysis representing realistic cracking patterns is then introduced and used in conjunction with PAFFC to show that very accurate predictions can be made if the typical nature of the SCC patch is embedded in the failure criterion.

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Haines(Archived), Harvey, Domenico Bellistri, and Jeff Vinyard. PR-366-173814-R01 Assessment of SCC with Advances in NDE including EMAT and IWEX Imaging. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), October 2019. http://dx.doi.org/10.55274/r0011624.

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The goal of this project is to improve failure pressure estimates of stress corrosion cracking (SCC) colonies by advancing field measurements and comparison to in-line inspection (ILI) tool data. Electromagnetic acoustic transducer (EMAT) ILI technologies have made significant strides in providing crack depth measurements for SCC colonies, and emerging technologies such as ultrasonic testing (UT) imaging are providing more accurate in-ditch validation data. A project was proposed to improve failure pressure estimates, with 3 tasks spanning 3 years. This report covers the results of year 1 (task 1) which includes the development of ultrasonic imaging processes and procedures for gathering accurate in-ditch measurements of depth, length and separation for SCC. Year 2 (task 2) comprised filed trials of the ultrasonic imaging and collections and analysis of EMAT data. Validation will be performed and improvements to signal analysis for crack sizing and interaction will be made as needed. Year 3 (task 3) work will include validation by means of burst tests to evaluated the performance of the model that predicts failure pressure based on ultrasonic imaging measurements. The main focus of year 1 was comparing the dimensions of SCC colonies measured by X-ray computed tomography (XCT) to IWEX ultrasound imaging for thirty 4-in (10 cm) wide plates containing SCC colonies. For truth data, two of these samples were destructively evaluated by breaking open cracks frozen in liquid nitrogen and sectioning through multiple parallel cracks with subsequent polishing of samples. Comparisons of the XCT and IWEX to the freeze break sample results are presented in this report across profiles of cracks in an SCC colony.

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Hanson and McNealy. PR-366-083506-R01 Guidelines for In Situ Characterization of Cracks. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), December 2010. http://dx.doi.org/10.55274/r0010736.

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The purpose of this project was to establish a practical metallographic protocol to distinguish between high pH SCC and near-neutral pH SCC in the ditch. The protocol addresses how to distinguish the crack propagation modes. In addition, the protocol addresses procedures for preparation of sample location areas for analysis through the use of mechanical, electrical, and chemical means considering the quality of results, ease of use, portability, and reliability.

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