Academic literature on the topic 'Molecular biology – Data processing – Research'

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Journal articles on the topic "Molecular biology – Data processing – Research"

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Ahdesmäki, Miika J. "Improved PDX and CDX Data Processing—Letter." Molecular Cancer Research 16, no. 11 (2018): 1813. http://dx.doi.org/10.1158/1541-7786.mcr-18-0534.

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Khandelwal, Garima, and Crispin Miller. "Improved PDX and CDX Data Processing—Response." Molecular Cancer Research 16, no. 11 (2018): 1814. http://dx.doi.org/10.1158/1541-7786.mcr-18-0535.

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Fodje, Michel, Kathryn Janzen, Shanunivan Labiuk, James Gorin, and Pawel Grochulski. "AutoProcess:Automated strategy calculation, data processing & structure solution." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C791. http://dx.doi.org/10.1107/s2053273314092080.

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Two critical aspect of macromolecular crystallography experiments are (1) Determining the optimal parameters and strategy for collecting good quality data and (2) Optimal processing of the collected data to obtain to facilitate structure determination. These tasks can be daunting to inexperienced crystallographers and often lead to inefficiencies as valuable beam-time is used up. To support automation, remote access and high-throughput crystallography, we have developed a software system for automation of all data processing tasks required at the synchrotron. AutoProcess, is layered on the XDS data processing package and makes use of other utilities such as BEST from the European Molecular Biology Laboratory (EMBL), CCP4 utilities and SHELX. The software can be used from the command line as a standalone application but can also be run as a service on a high-performance computing cluster, and integrated into beamline control and information management systems such as MxDC and MxLIVE to allows users to determine the optimal strategy for data collection, and/or process full datasets with the click of a button. Users are presented with a graphical data processing report as well as reflection output files in popular formats automatically. For small molecule and peptide structures, an unrefined initial structure with an electron density map is automatically generated using only the raw diffraction images and the chemical composition of the molecule. Future developments will include sub-structure solution for MAD/SAD/SIRAS data. The software is freely available under an open-source license from the authors. The Canadian Light Source is supported by the Natural Sciences and Engineering Research Council of Canada, the National Research Council Canada, the Canadian Institutes of Health Research, the Province of Saskatchewan, Western Economic Diversification Canada, and the University of Saskatchewan.
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Likhoshway, E. V. "Actual trends in water ecosystem biology development." Marine Biological Journal 2, no. 4 (2017): 3–14. http://dx.doi.org/10.21072/mbj.2017.02.4.01.

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This synopsis characterizes new trends in oceanology arising for the last some years as a result of practical application of actual methods in data obtaining and processing. First of all, these are methods of massive parallel sequencing, “-omics” and bioinformatics methods of data storage and analysis. Identifying biologically active substances in water environment and results of laboratory-based experiments show the existence of molecular signal transduction both at the level of population and interspecies relations between microorganisms and at the level of their trophic connections. “From molecules to ecosystem” – is an actual trend in biology of marine ecosystems. Unification and analysis of large databases including space imagery and “cloud” technologies created a new trend of research in ecoinformatics; this allows to understand structural-functional organization of water ecosystems as a whole.
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Gîfu, Daniela, Diana Trandabăț, Kevin Cohen, and Jingbo Xia. "Special Issue on the Curative Power of Medical Data." Data 4, no. 2 (2019): 85. http://dx.doi.org/10.3390/data4020085.

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With the massive amounts of medical data made available online, language technologies have proven to be indispensable in processing biomedical and molecular biology literature, health data or patient records. With huge amount of reports, evaluating their impact has long ceased to be a trivial task. Linking the contents of these documents to each other, as well as to specialized ontologies, could enable access to and the discovery of structured clinical information and could foster a major leap in natural language processing and in health research. The aim of this Special Issue, “Curative Power of Medical Data” in Data, is to gather innovative approaches for the exploitation of biomedical data using semantic web technologies and linked data by developing a community involvement in biomedical research. This Special Issue contains four surveys, which include a wide range of topics, from the analysis of biomedical articles writing style, to automatically generating tests from medical references, constructing a Gold standard biomedical corpus or the visualization of biomedical data.
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Kahsay, Robel, Jeet Vora, Rahi Navelkar, et al. "GlyGen data model and processing workflow." Bioinformatics 36, no. 12 (2020): 3941–43. http://dx.doi.org/10.1093/bioinformatics/btaa238.

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Abstract Summary Glycoinformatics plays a major role in glycobiology research, and the development of a comprehensive glycoinformatics knowledgebase is critical. This application note describes the GlyGen data model, processing workflow and the data access interfaces featuring programmatic use case example queries based on specific biological questions. The GlyGen project is a data integration, harmonization and dissemination project for carbohydrate and glycoconjugate-related data retrieved from multiple international data sources including UniProtKB, GlyTouCan, UniCarbKB and other key resources. Availability and implementation GlyGen web portal is freely available to access at https://glygen.org. The data portal, web services, SPARQL endpoint and GitHub repository are also freely available at https://data.glygen.org, https://api.glygen.org, https://sparql.glygen.org and https://github.com/glygener, respectively. All code is released under license GNU General Public License version 3 (GNU GPLv3) and is available on GitHub https://github.com/glygener. The datasets are made available under Creative Commons Attribution 4.0 International (CC BY 4.0) license. Supplementary information Supplementary data are available at Bioinformatics online.
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Bensmail, Halima, and Abdelali Haoudi. "Postgenomics: Proteomics and Bioinformatics in Cancer Research." Journal of Biomedicine and Biotechnology 2003, no. 4 (2003): 217–30. http://dx.doi.org/10.1155/s1110724303209207.

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Now that the human genome is completed, the characterization of the proteins encoded by the sequence remains a challenging task. The study of the complete protein complement of the genome, the “proteome,” referred to as proteomics, will be essential if new therapeutic drugs and new disease biomarkers for early diagnosis are to be developed. Research efforts are already underway to develop the technology necessary to compare the specific protein profiles of diseased versus nondiseased states. These technologies provide a wealth of information and rapidly generate large quantities of data. Processing the large amounts of data will lead to useful predictive mathematical descriptions of biological systems which will permit rapid identification of novel therapeutic targets and identification of metabolic disorders. Here, we present an overview of the current status and future research approaches in defining the cancer cell's proteome in combination with different bioinformatics and computational biology tools toward a better understanding of health and disease.
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Feltus, Frank A., Joseph R. Breen, Juan Deng, et al. "The Widening Gulf between Genomics Data Generation and Consumption: A Practical Guide to Big Data Transfer Technology." Bioinformatics and Biology Insights 9s1 (January 2015): BBI.S28988. http://dx.doi.org/10.4137/bbi.s28988.

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In the last decade, high-throughput DNA sequencing has become a disruptive technology and pushed the life sciences into a distributed ecosystem of sequence data producers and consumers. Given the power of genomics and declining sequencing costs, biology is an emerging “Big Data” discipline that will soon enter the exabyte data range when all subdisciplines are combined. These datasets must be transferred across commercial and research networks in creative ways since sending data without thought can have serious consequences on data processing time frames. Thus, it is imperative that biologists, bioinformaticians, and information technology engineers recalibrate data processing paradigms to fit this emerging reality. This review attempts to provide a snapshot of Big Data transfer across networks, which is often overlooked by many biologists. Specifically, we discuss four key areas: 1) data transfer networks, protocols, and applications; 2) data transfer security including encryption, access, firewalls, and the Science DMZ; 3) data flow control with software-defined networking; and 4) data storage, staging, archiving and access. A primary intention of this article is to orient the biologist in key aspects of the data transfer process in order to frame their genomics-oriented needs to enterprise IT professionals.
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Zinchenko, M. O., K. B. Sukhomlin, O. P. Zinchenko, and V. S. Tepliuk. "The biology of Simulium noelleri and Simulium dolini: morphological, ecological and molecular data." Biosystems Diversity 29, no. 2 (2021): 180–84. http://dx.doi.org/10.15421/012122.

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Molecular genetic research has revolutionized the taxonomy and systematics of the Simuliidae family. Simulium noelleri Friederichs, 1920 is a species of blackfly, common in the Holarctic, reported for 33 countries. In 1954, Topchiev recorded it in Ukraine for the first time. Simulium dolini Usova et Sukhomlin, 1989 has been recorded at the borders of Ukraine and Belarus. It was described for the first time by Usova and Sukhomlin in 1989 from the collection from the territory of Volyn region in 1985. Usova and Sukhomlin, Yankovsky, Adler state that S. noelleri and S. dolini are different species by the morphological characteristics that differ in all phases of development. Adults differ in the structure of the genital appendages, palps, the margin and shape of the face and forehead, the colour of the legs; the larva – in the pattern on the frontal capsule, the number of rays in the fans, mandibular teeth and the hypostoma, the structure of the hind organ of attachment; pupae – in the branching way of gills. Molecular data are becoming an increasingly important tool in insect taxonomy. Therefore, we had to check that these two closely related species also have genetic difference. The development of S. noelleri and S. dolini was studied in four small rivers of Volyn region, Ukraine (Chornohuzka, Konopelka, Putylivka, Omelyanivka) in the period from 2017 to 2019. During initial processing of insect samples, we used the standard protocols EPPO PM7/129. We obtained the nucleotide sequence of S. dolini. It was proved that the populations of S. noelleri and S. dolini from medium and small rivers of Volyn differ in biological, morphological, behavioural and genetic characteristics. Comparison of the species S. noelleri with the data of the GenBank confirms the identification of three distinct morphotypes from Volyn, Great Britain and Canada. As a result of the conducted researches, it was confirmed that two close species of S. dolini and S. noelleri from the noelleri species group differ in the structure of mitochondrial DNA, which confirms their independent taxonomic status. Additional studies comprising more individuals from larger areas of Europe are required to verify the taxonomic position of these two species.
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Vowinckel, Jakob, Thomas Corwin, Jonathan Woodsmith, et al. "Proteome and phospho-proteome profiling for deeper phenotype characterization of colorectal cancer heterogeneity." Journal of Clinical Oncology 39, no. 15_suppl (2021): e15536-e15536. http://dx.doi.org/10.1200/jco.2021.39.15_suppl.e15536.

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e15536 Background: The rise of precision oncology therapeutics requires deep understanding of the molecular mechanisms implicated in cancer biology. Colorectal cancer (CRC) is one of the first solid tumors to be molecularly characterized by defined genes and pathways. Advances in tumor profiling have revealed a profound molecular heterogeneity in CRC leading to the definition of several consensus molecular subtypes (CMS). However, this molecular heterogeneity is still largely defined on the genomic and transcriptomics level. To complement the understanding of genetically defined molecular subgroups, we performed large-scale deep proteomic and phospho-proteomic profiling of CRC patient biopsies and adjacent healthy control tissue, which has enabled to explore the phenotype and obtain more functional insights in cancer biology. Methods: Sample processing from 5-10 mg of tissue per sample was performed using a liquid handling robot. Phospho-peptide enrichment was carried out with a Kingfisher Flex device and MagReSyn Ti-IMAC magnetic beads. Data-Independent Acquisition (DIA) LC-MS/MS was performed on multiple platforms consisting of a Thermo Scientific Q Exactive HF-X mass spectrometer coupled to a Waters M-Class LC. Chromatography was operating at 5 µL/min, and separation was achieved using 45 min (whole proteome) and 60 min (phospho-proteome) gradients. Results: Indivumed has built IndivuType, the world’s first multi-omics database for individualized cancer therapy, analyzing the highest quality cancer biospecimens to generate the most comprehensive dataset, including genomics, transcriptomics, proteomics, and clinical outcome information. Enabled by the DIA technology, a mass spectrometric method developed by Biognosys that obtains peptide fragmentation data in a highly parallelized way with high sensitivity, more than 7,000 proteins in the whole proteome and 20,000 phospho-peptides in the phospho-proteome workflow were profiled across more than 900 resected tissue samples of various CMS of CRC. The resulting proteome and phospho-proteome data were integrated into the IndivuType database and cross-analyzed with genomic and transcriptomic markers. Through this combined analysis, novel insights in clinically relevant signaling pathways in CRC subtypes were revealed. Conclusions: The deep phenotypic profiling of cancer samples, using next generation proteomics and phospho-proteomics, has enabled us to go beyond the genomic level in the characterization of tumor molecular heterogeneity. This multi-omics approach provides a solid foundation to advance the understanding of cancer biology, unravel key molecular events, and support the identification of novel therapeutic targets for precision medicine in CRC.
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Dissertations / Theses on the topic "Molecular biology – Data processing – Research"

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Schabort, Willem Petrus Du Toit. "Integration of kinetic models with data from 13C-metabolic flux experiments." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/707.

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Pafilis, Evangelos. "Web-based named entity recognition and data integration to accelerate molecular biology research." [S.l. : s.n.], 2008. http://nbn-resolving.de/urn:nbn:de:bsz:16-opus-89706.

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Jungfer, Kim Michael. "Semi automatic generation of CORBA interfaces for databases in molecular biology." Thesis, University College London (University of London), 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272561.

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Archer, Emory Scott. "Development of graphical software tools for molecular biology." Thesis, Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B19974218.

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Yim, Cheuk-hon Terence, and 嚴卓漢. "Approximate string alignment and its application to ESTs, mRNAs and genome mapping." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B31455736.

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Olivier, Brett Gareth. "Simulation and database software for computational systems biology : PySCes and JWS Online." Thesis, Stellenbosch : Stellenbosch University, 2005. http://hdl.handle.net/10019.1/50449.

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Thesis (PhD)--Stellenbosch University, 2005.<br>ENGLISH ABSTRACT: Since their inception, biology and biochemistry have been spectacularly successful in characterising the living cell and its components. As the volume of information about cellular components continues to increase, we need to ask how we should use this information to understand the functioning of the living cell? Computational systems biology uses an integrative approach that combines theoretical exploration, computer modelling and experimental research to answer this question. Central to this approach is the development of computational models, new modelling strategies and computational tools. Against this background, this study aims to: (i) develop a new modelling package: PySCeS, (ii) use PySCeS to study discontinuous behaviour in a metabolic pathway in a way that was very difficult, if not impossible, with existing software, (iii) develop an interactive, web-based repository (JWS Online) of cellular system models. Three principles that, in our opinion, should form the basis of any new modelling software were laid down: accessibility (there should be as few barriers as possible to PySCeS use and distribution), flexibility (pySCeS should be extendable by the user, not only the developers) and usability (PySCeS should provide the tools we needed for our research). After evaluating various alternatives we decided to base PySCeS on the freely available programming language, Python, which, in combination with the large collection of science and engineering algorithms in the SciPy libraries, would give us a powerful modern, interactive development environment.<br>AFRIKAANSE OPSOMMING: Sedert hul totstandkoming was biologie en, meer spesifiek, biochemie uiters suksesvol in die karakterisering van die lewende sel se komponente. Steeds groei die hoeveelheid informasie oor die molekulêre bestanddele van die sel daagliks; ons moet onself dus afvra hoe ons hierdie informasie kan integreer tot 'n verstaanbare beskrywing van die lewende sel se werking. Om dié vraag te beantwoord gebruik rekenaarmatige sisteembiologie 'n geïntegreerde benadering wat teorie, rekenaarmatige modellering en eksperimenteeIe navorsing kombineer. Sentraal tot die benadering is die ontwikkeling van nuwe modelle, strategieë vir modellering, en sagteware. Teen hierdie agtergrond is die hoofdoelstelling van hierdie projek: (i) die ontwikkeling van 'n nuwe modelleringspakket, PySCeS (ii) die benutting van PySCeS om diskontinue gedrag in n metaboliese sisteem te bestudeer (iets wat met die huidiglik beskikbare sagteware redelik moeilik is), (en iii) die ontwikkeling vann interaktiewe, internet-gebaseerde databasis van sellulêre sisteem modelle, JWS Online. Ons is van mening dat nuwe sagteware op drie belangrike beginsels gebaseer behoort te wees: toeganklikheid (die sagteware moet maklik bekombaar en bruikbaar wees), buigsaamheid (die gebruiker moet self PySCeS kan verander en ontwikkel) en bruikbaarheid (al die funksionalitiet wat ons vir ons navorsing nodig moet in PySCeS ingebou wees). Ons het verskeie opsies oorweeg en besluit om die vrylik verkrygbare programmeringstaal, Python, in samehang die groot kolleksie wetenskaplike algoritmes, SciPy, te gebruik. Hierdie kombinasie verskaf n kragtige, interaktiewe ontwikkelings- en gebruikersomgewing. PySCeS is ontwikkel om onder beide die Windows en Linux bedryfstelsels te werk en, meer spesifiek, om gebruik te maak van 'n 'command line interface'. Dit beteken dat PySCeS op enige interaktiewe rekenaar-terminaal Python ondersteun sal werk. Hierdie eienskap maak ook moontlik die gebruik van PySCeS as 'n modelleringskomponent in 'n groter sagteware pakket onder enige bedryfstelsel wat Python ondersteun. PySCeS is op 'n modulere ontwerp gebaseer, wat dit moontlik vir die eindgebruiker maak om die sagteware se bronkode verder te ontwikkel. As 'n toepassing is PySCeS gebruik om die oorsaak van histeretiese gedrag van 'n lineêre, eindproduk-geïnhibeerde metaboliese pad te ondersoek. Ons het hierdie interessante gedrag in 'n vorige studie ontdek, maar kon nie, met die sagteware wat op daardie tydstip tot ons beskikking was, hierdie studie voortsit nie. Met PySCeS se ingeboude vermoë om parameter kontinuering te doen, kon ons die oorsake van hierdie diskontinuë gedrag volledig karakteriseer. Verder het ons 'n nuwe metode ontwikkel om hierdie gedrag te visualiseer as 'n interaksie tussen die volledige sisteem se subkomponente. Tydens PySCeS se ontwikkeling het ons opgemerk dat dit baie moeilik was om metaboliese modelle wat in die literature gepubliseer is te herbou en te bestudeer. Hierdie situasie is grotendeels die gevolg van die feit dat nêrens 'n sentrale databasis vir metaboliese modelle bestaan nie (soos dit wel bestaan vir genomiese data of proteïen strukture). Die JWS Online databasis is spesifiek ontwikkel om hierdie leemte te vul. JWS Online maak dit vir die gebruiker moontlik om, via die internet en sonder die installasie van enige gespesialiseerde modellerings sagteware, gepubliseerde modelle te bestudeer en ook af te laai vir gebruik met ander modelleringspakkette soos bv. PySCeS. JWS Online het alreeds 'n onmisbare hulpbron vir sisteembiologiese navorsing en onderwys geword.
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Ho, Ngai-lam, and 何毅林. "Algorithms on constrained sequence alignment." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2004. http://hub.hku.hk/bib/B30201949.

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Santos, Karina Baptista dos. "Predição de estruturas de proteínas utilizando restrições de ângulo diedrais." Laboratório Nacional de Computação Científica, 2014. https://tede.lncc.br/handle/tede/204.

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Submitted by Maria Cristina (library@lncc.br) on 2015-04-10T18:35:20Z No. of bitstreams: 1 Karina_Dissertacao_versao_final.pdf: 14328590 bytes, checksum: b09ee552401b05045498580540b46215 (MD5)<br>Approved for entry into archive by Maria Cristina (library@lncc.br) on 2015-04-10T18:35:35Z (GMT) No. of bitstreams: 1 Karina_Dissertacao_versao_final.pdf: 14328590 bytes, checksum: b09ee552401b05045498580540b46215 (MD5)<br>Made available in DSpace on 2015-04-10T18:35:48Z (GMT). No. of bitstreams: 1 Karina_Dissertacao_versao_final.pdf: 14328590 bytes, checksum: b09ee552401b05045498580540b46215 (MD5) Previous issue date: 2014-07-18<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Capes)<br>Protein structure prediction is one of the most important problems in computational molecular biology and aims to determine the three dimensional structure of proteins solely from the amino acid sequence. It is considered that the amino acid sequence contains all the necessary information for the chain to adopt its native conformation under physiological conditions. The prediction of protein structure constitutes an extremely difficult optimization problem because, depending on the approximations made, it deals with hundreds or thousands of degrees of freedom and a complex search space associated with the multimodal energy hyper surface. Even for smaller proteins, the problem is computationally costly due the complexity of the optimization process. The goal of this work was the development of genetic operators for the GAPF program (Genetic Algorithm for Protein Folding – developed by GMSSB/LNCC). The operators work through the use of constraints in the search space of the main chain dihedral angles to accelerate the search algorithm and improve the predictive ability of the program. This work was developed in six stages: I - Building an matrix of dihedral angles phi and psi from a database of experimentally determined protein structures, with up to 20% identity; II - Development and introduction in the GAPF program of the RAMA mutation operators in order to use the dihedral angles matrix; III - Generation of initial population using information supplied by the matrix of dihedral angles; IV - Use of matrix of dihedral angles generated from fragments libraries specifically built for each sequence target; V - Verify the performance of the methodology when information from secondary structure prediction of the target sequence and protein structures database are provided; and VI - Evaluate the effect of these changes in terms of reducing the computational cost and quality of the predicted structures. The operators were tested in a set of eight proteins belonging to the following classes: preferably-alpha, alpha+beta, alpha\beta and preferably-beta. The results showed that the imposition the more favorable phi and psi for each amino acid as angular constraints reduced up to 75% the number of energy function evaluations necessary to obtain equivalent results without the use of these operators. Additionally, it was possible to obtain more accurate models, with a reduction of up to 4Å for RMSD and an increase of approximately 6% in GDT-TS of the bigger proteins of the test set, i.e. 1BDD and 1GYZ, when comparing with the values obtained for standard version of the GAPF program using the same number of evaluations.<br>A predição de estrutura de proteínas é um dos propósitos mais importantes da biologia molecular computacional e possui como objetivo determinar a estrutura tridimensional de proteínas a partir de suas sequências de aminoácidos. Na técnica de predição por primeiros princípios se considera que a sequência de aminoácidos de uma proteína contém toda a informação necessária para que a cadeia adote, em condições fisiológicas, sua conformação tridimensional nativa. Esse tipo de predição se constitui em um problema de otimização extremamente difícil visto que, dependendo das aproximações efetuadas, se lidam com centenas ou milhares de graus de liberdade e com um espaço de busca conformacional muito complexo associado à uma superfície de energia multimodal. Mesmo para uma pequena molécula de proteína, o problema é difícil de ser tratado computacionalmente devido ao alto custo em tempo de execução, além da complexidade associada ao processo de otimização. O objetivo deste trabalho foi o desenvolvimento de operadores genéticos que atuem no processo de otimização do programa GAPF (Genetic Algorithm for Protein Folding – desenvolvido pelo GMSSB/LNCC) através do uso de restrições no espaço de busca de ângulos diedrais associados à cadeia principal da proteína de modo a acelerar o processo de busca do algoritmo e melhorar a capacidade preditiva do programa. Esse trabalho se desenvolveu em seis etapas: I – Construção uma matriz de ângulos diedrais phi e psi a partir do banco de estruturas de proteínas determinadas experimentalmente, com até 20% de identidade; II - Desenvolvimento e introdução de operadores genéticos de mutação RAMA ao programa GAPF tendo em vista o uso da matriz de ângulos diedrais; III - Geração da população inicial empregando informações fornecidas pelas matrizes de ângulos diedrais; IV - Investigação do uso de matrizes de ângulos diedrais geradas a partir de bibliotecas de fragmentos específicas para cada sequência alvo; V - Verificar o desempenho da metodologia ao serem introduzidas informações a respeito da estrutura secundária da sequência alvo e das proteínas do banco de estruturas usado; e VI - Avaliar o efeito das modificações introduzidas no algoritmo em termos de redução do custo computacional e qualidade das estruturas preditas. A utilização dos operadores foi testada na predição de um conjunto de oito proteínas, pertencentes às classes: preferencialmente alpha; alpha+beta; alpha\beta e preferencialmente beta. Os resultados obtidos mostraram que a imposição de restrições angulares associadas à utilização dos ângulos phi e psi mais favoráveis para cada tipo de resíduo, proporcionaram uma redução de até 75\% do número de avaliações de função de energia necessário para se obter um resultado equivalente sem o uso desses operadores. Adicionalmente, foi possível obter predições de estruturas mais acuradas, com uma redução de até 4Å nos valores de RMSD e um acréscimo de aproximadamente 6% nos valores de GDT-TS das maiores proteínas do conjunto teste, isto é, 1BDD e 1GYZ, quando comparados aos valores obtidos com o GAPF padrão para o mesmo número de avaliações.
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Moix, Jeremy Michael. "Molecular Dynamics and Stochastic Simulations of Surface Diffusion." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14580.

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Despite numerous advances in experimental methodologies capable of addressing the various phenomenon occurring on metal surfaces, atomic scale resolution of the microscopic dynamics remains elusive for most systems. Computational models of the processes may serve as an alternative tool to fill this void. To this end, parallel molecular dynamics simulations of self-diffusion on metal surfaces have been developed and employed to address microscopic details of the system. However these simulations are not without their limitations and prove to be computationally impractical for a variety of chemically relevant systems, particularly for diffusive events occurring in the low temperature regime. To circumvent this difficulty, a corresponding coarse-grained representation of the surface is also developed resulting in a reduction of the required computational effort by several orders of magnitude, and this description becomes all the more advantageous with increasing system size and complexity. This representation provides a convenient framework to address fundamental aspects of diffusion in nonequilibrium environments and an interesting mechanism for directing diffusive motion along the surface is explored. In the ensuing discussion, additional topics including transition state theory in noisy systems and the construction of a checking function for protein structure validation are outlined. For decades the former has served as a cornerstone for estimates of chemical reaction rates. However, in complex environments transition state theory most always provides only an upper bound for the true rate. An alternative approach is described that may alleviate some of the difficulties associated with this problem. Finally, one of the grand challenges facing the computational sciences is to develop methods capable of reconstructing protein structure based solely on readily-available sequence information. Herein a checking function is developed that may prove useful for addressing whether a particular proposed structure is a viable possibility.
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Custódio, Fábio Lima. "Algoritmos genéticos para predição ab initio de estrutura de proteínas." Laboratório Nacional de Computação Científica, 2008. http://www.lncc.br/tdmc/tde_busca/arquivo.php?codArquivo=159.

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Métodos de predição ab initio de estrutura de proteínas (PSP) buscam prever, baseando-se em primeiros princípios, a estrutura tridimensional que uma dada seqüência de aminoácidos irá adotar no espaço. Os métodos de predição ab initio atualmente possuem aplicações biotecnológicas que envolvem desde a criação de novas proteínas, o auxílio no desenho racional de fármacos (estrutura do receptor), o refinamento de modelos teóricos e a obtenção de estruturas a partir de dados experimentais incompletos. Entretanto, a predição envolve um problema de otimização que lida com milhares de graus de liberdade e está associado à hipersuperfícies de energia extremamente complexas o que torna o problema difícil de ser tratado computacionalmente. Neste trabalho utilizamos um modelo tridimensional de proteínas simplificado (modelo hidrofóbico-polar, HP) para reduzir os custos computacionais associados ao problema de PSP de modo que uma metodologia de otimização, robusta e eficiente, baseada em algoritmos genéticos, fosse desenvolvida mais rapidamente. Em seguida a metodologia foi adaptada para um modelo com descrição atômica que utiliza um campo de forças clássico como função de energia. Durante o desenvolvimento foram implementadas e analisadas várias estratégias para o problema. Foi descrita uma nova abordagem, baseada em crowding, para a manutenção da diversidade na população que resulta na obtenção simultânea de múltiplas soluções. A metodologia para o modelo HP foi aplicada a 35 seqüências disponíveis na literatura e os resultados comparativos mostraram que o algoritmo genético desenvolvido é superior a outros algoritmos evolutivos publicados, e comparável a métodos especializados. A metodologia para o modelo atômico foi inicialmente testada em poli-alaninas e em seguida em cinco outras proteínas de maior complexidade. Foram encontradas estruturas apresentando RMSDs entre 2,0 e 6,7 Å, em relação à estrutura determinada experimentalmente. O algoritmo genético se mostrou superior a outros métodos semelhantes, em termos de custo computacional. Os resultados obtidos mostram que as estratégias de otimização envolvendo a busca por múltiplos mínimos possuem duas grandes vantagens. A primeira delas está em uma investigação mais efetiva de uma hipersuperfície complexa aumentando a probabilidade de se encontrar soluções ótimas (de mais baixa energia); a segunda delas está no aumento da probabilidade de se obter estruturas próximas daquelas determinadas experimentalmente mesmo quando estas não são o mínimo global da hipersuperfície de energia investigada.
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Books on the topic "Molecular biology – Data processing – Research"

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Ion, Măndoiu, and Zelikovsky Alexander, eds. Bioinformatics research and applications: Third international symposium, ISBRA 2007, Atlanta, GA, USA, May 7-10, 2007 : proceedings. Springer, 2007.

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Rui-Sheng, Wang, and Zhang Xiang-Sun 1943-, eds. Biomolecular networks: Methods and applications in systems biology. Wiley, 2009.

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Cesario, Alfredo. Cancer Systems Biology, Bioinformatics and Medicine: Research and Clinical Applications. Springer Science+Business Media B.V., 2011.

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ISBRA 2010 (2010 Storrs, Conn.). Bioinformatics research and applications: 6th international symposium, ISBRA 2010, Storrs, CT, USA, May 23-26, 2010 : proceedings. Springer, 2010.

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Schreiner, Peter R. Computational molecular science. Wiley, 2014.

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Goodfellow, Julia M. Computer modelling of biomolecular processes. E. Horwood, 1992.

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Attwood, Teresa K. Introduction to bioinformatics. Longman, 1999.

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Maber, Jon. Data analysis for biomolecular sciences. Longman, 1999.

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Pacific Symposium on Biocomputing (2nd 1997 Maui, Hawaii). Pacific Symposium on Biocomputing '97: Maui, Hawaii, USA, 6-9 January 1997. Edited by Altman Russ. World Scientific, 1996.

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Y, Zomaya Albert, and Wiley online library, eds. Algorithms in computational molecular biology: Techniques, approaches and applications. Wiley-Blackwell, 2010.

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Book chapters on the topic "Molecular biology – Data processing – Research"

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Cruz, Cristina, and Jonathan Houseley. "Protocols for Northern Analysis of Exosome Substrates and Other Noncoding RNAs." In Methods in Molecular Biology. Springer New York, 2019. http://dx.doi.org/10.1007/978-1-4939-9822-7_5.

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AbstractOver the past decade a plethora of noncoding RNAs (ncRNAs) have been identified, initiating an explosion in RNA research. Although RNA sequencing methods provide unsurpassed insights into ncRNA distribution and expression, detailed information on structure and processing are harder to extract from sequence data. In contrast, northern blotting methods provide uniquely detailed insights into complex RNA populations but are rarely employed outside specialist RNA research groups. Such techniques are generally considered difficult for nonspecialists, which is unfortunate as substantial technical advances in the past few decades have solved the major challenges. Here we present simple, reproducible and highly robust protocols for separating glyoxylated RNA on agarose gels and heat denatured RNA on polyacrylamide–urea gels using standard laboratory electrophoresis equipment. We also provide reliable transfer and hybridization protocols that do not require optimization for most applications. Together, these should allow any molecular biology lab to elucidate the structure and processing of ncRNAs of interest.
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White, Thomas A. "Processing of XFEL Data." In Methods in Molecular Biology. Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4939-7000-1_13.

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Brown, J. B. "Fundamental Bioinformatic and Chemoinformatic Data Processing." In Methods in Molecular Biology. Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-8639-2_3.

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Zhu, Xuan, Jian Wang, Cielito Reyes-Gibby, and Sanjay Shete. "Processing and Analyzing Human Microbiome Data." In Methods in Molecular Biology. Springer New York, 2017. http://dx.doi.org/10.1007/978-1-4939-7274-6_31.

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Harris, Jason Bret. "Post-processing of Large Bioactivity Data." In Methods in Molecular Biology. Springer New York, 2019. http://dx.doi.org/10.1007/978-1-4939-9089-4_3.

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Dalmasso, Enrique A., and Dominic Caseñas. "Data Processing and Analysis Using ProteinChip® Data Manager Software." In Methods in Molecular Biology. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-61779-418-6_3.

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Tovar, Diego, Eduardo Cornejo, Petros Xanthopoulos, Mario R. Guarracino, and Panos M. Pardalos. "Data Mining in Psychiatric Research." In Methods in Molecular Biology. Humana Press, 2011. http://dx.doi.org/10.1007/978-1-61779-458-2_37.

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VanBuren, Vincent. "Visual Data Mining of Coexpression Data to Set Research Priorities in Cardiac Development Research." In Methods in Molecular Biology. Humana Press, 2011. http://dx.doi.org/10.1007/978-1-61779-523-7_25.

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Zhu, Xuan, Jian Wang, Cielito Reyes-Gibby, and Sanjay Shete. "Correction to: Processing and Analyzing Human Microbiome Data." In Methods in Molecular Biology. Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-7274-6_32.

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Leblanc, Benjamin, Itys Comet, Frédéric Bantignies, and Giacomo Cavalli. "Chromosome Conformation Capture on Chip (4C): Data Processing." In Methods in Molecular Biology. Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4939-6380-5_21.

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Conference papers on the topic "Molecular biology – Data processing – Research"

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Veloso, L., J. McHugh, E. von Weltin, S. Lopez, I. Obeid, and J. Picone. "Big data resources for EEGs: Enabling deep learning research." In 2017 IEEE Signal Processing in Medicine and Biology Symposium (SPMB). IEEE, 2017. http://dx.doi.org/10.1109/spmb.2017.8257044.

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Thiagarajan, Tara. "Brainbase: A research and data management platform for human EEG." In 2017 IEEE Signal Processing in Medicine and Biology Symposium (SPMB). IEEE, 2017. http://dx.doi.org/10.1109/spmb.2017.8257017.

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D'Souza, M. J., D. Wentzien, R. Bautista, et al. "Data-intensive Undergraduate Research Project Informs to Advance Healthcare Analytics." In 2018 IEEE Signal Processing in Medicine and Biology Symposium (SPMB). IEEE, 2018. http://dx.doi.org/10.1109/spmb.2018.8615591.

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Rahman, S., M. Miranda, I. Obeid, and J. Picone. "Software and Data Resources to Advance Machine Learning Research in Electroencephalography." In 2019 IEEE Signal Processing in Medicine and Biology Symposium (SPMB). IEEE, 2019. http://dx.doi.org/10.1109/spmb47826.2019.9037851.

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"Research on Application of Large Data Processing Technology in Interactive Design." In 2017 3rd International Conference on Environment, Biology, Medicine and Computer Applications. Francis Academic Press, 2017. http://dx.doi.org/10.25236/icebmca.2017.22.

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Sadler, J. Evan. "THE MOLECULAR BIOLOGY OF VON WILLEBRAND FACTOR." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643930.

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Human von Willebrand factor (vWF) is a plasma glycoprotein that is synthesized by endothelial cells and megakaryocytes, and perhaps by syncytiotrophoblast of placenta. The biosynthesis of vWF is very complex, involving proteolytic processing, glycosyla-tion, disulfide bond formation, and sulfation. Mature vWF consists of a single subunit of ∼ 250,000 daltons that is assembled into multimer ranging from dimers to species of over 10 million daltons. vWF performs its essential hemostatic function through several binding interactions, forming a bridge between specific receptors on the platelet surface and components of damaged vascular subendothelial connective tissue. Inherited deficiency of vWF, or von Willebrand disease (vWD), is the most common genetically transmitted bleeding disorder worldwide. The last two years has been a time of very rapid progress in understanding the molecular biology of vWF. Four research groups have independently isolated and sequenced the 9 kilobase full-length vWF cDNA. The predicted protein sequence has provided a foundation for understanding the biosynthetic processing of vWF, and has clarified the relationship between vWF and a 75-100 kilodalton plasma protein of unknown function, von Willebrand antigen II (vWAgll)/ vWAgll is co-distributed with vWF in endothelial cells and platelets, and is deficient in patients with vWD. The cDNA sequence of vWF shows that vWAgll is a rather large pro-peptide for vWF, explaining the biochemical and genetic association between the two proteins. vWF has a complex evolutionary history marked by many separate gene segment duplications. The primary structure of the protein contains four distinct types of repeated domains present in two to four copies each. Repeated domains account for over 90 percent of the protein sequence. This sequence provides a framework for ordering the functional domains that have been defined by protein chemistry methods. A tryptic peptide from the amino-terminus of vWF that overlaps domain D3 binds to factor VIII and also appears to bind to heparin. Peptides that include domain A1 bind to collagens, to heparin, and to platelet glycoprotein Ib. A second collagen binding site appears to lie within domain A3. The vWF cDNA has been expressed in heterologous cells to produce small amounts of functionally and structurally normal vWF, indicating that endothelial cells are not unique in their ability to process and assemble vWF multimers. Site-directed mutagenesis has been used to show that deletion of the propeptide of vWF prevents the formation of multimers. Cloned cDNA probes have been employed to isolate vWF genomic DNA from cosmid and λ-phage libraries, and the size of the vWF gene appears to be ∼ 150 kilobases. The vWF locus has been localized to human chromosome 12p12—pter. Several intragenic RFLPs have been characterized. With them, vWF has been placed on the human genetic linkage map as the most telomeric marker currently available for the short arm of chromosome 12. A second apparently homologous locus has been identified on chromosome 22, but the relationship of this locus to the authentic vWF gene is not yet known. The mechanism of vWD has been studied by Southern blotting of genomic DNA with cDNA probes in a few patients. Three unrelated pedigrees have been shown to have total deletions of the vWF gene as the cause of severe vWD (type III). This form of gene deletion appears to predispose to the development of inhibitory alloantibodies to vWF during therapy with cryoprecipitate. During the next several years recombinant DNA methods will continue to contribute our understanding of the evolution, biosynthesis, and structure-function relationships of vWF, as well as the mechanism of additional variants of vWD at the level of gene structure.
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Souchelnytskyi, Serhiy. "Systemic properties of Carcinogenesis: Lessons from studies on the Earth and in the Space." In Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0118.

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proteins and genes act in coordinated ways, and their relations are visualized as networks. Networks are more accurate descriptions of cancer regulatory mechanisms, in comparison to lists of oncogenes and tumor suppressors. To extract essential regulators (nodes) and connections (edges), interrogations of these networks are performed, e.g. cancer cells are subjected to different treatments. Interrogations force cancer cells to engage nodes and edges essential for maintaining cancer properties, i.e. drivers, and nonessential followers. The challenge is to discriminate which of the mechanisms drive tumorigenesis, and which are followers. Interrogation of cancer cells under variable g-forces is the treatment to which cancer cells are not normally exposed. Therefore, low (weightlessness) and high (acceleration) g-forces may trigger responses, which may differ in part of followers from responses on the Earth, but still engage carcinogenesis-essential drivers nodes and edges. Methodology: Experimental interrogation of human cancer cells to generate carcinogenesis-related regulatory networks was performed by using proteomics, cell biology, biochemistry, immunohistochemistry and bioinformatics tools. We used also reported datasets deposited in various databases. These networks were analyzed with algorithms to extract drivers of carcinogenesis. Results: Systemic analysis of human breast carcinogenesis has shown mechanisms of engagement of all known cancer hallmarks. Moreover, novel hallmarks have emerged, e.g. involvement of mechanisms of virus-cell interaction and RNA/miR processing. The breast cancer networks are rich, with &gt;6,000 involved proteins and genes. The richness of the networks may explain many clinical observations, e.g. personalized response to treatments. Systemic analysis highlighted novel opportunities for treatment of cancer, by identifying key nodes of known and novel hallmark mechanisms. Systemic properties of the cancer network provides an opportunity to study compensatory mechanisms. These compensatory mechanisms frequently contribute to development of resistance to treatment. These mechanisms will be discussed. Cancer cells are not “wired” to function in weightlessness. The cells would have to adapt. This adaptation will include preserving mechanisms driving carcinogenesis, in addition to the space-only-related adaptation. Key carcinogenesis regulators in the space would be the same as on the Earth, while “passenger”-mechanisms would differ. Systems biology allows integration of a space- and the Earth-data, and would extract key regulators, and, subsequently lead to better diagnostic. Conclusion: Systemic analysis of carcinogenesis studies with different ways of interrogation delivered better diagnostic and novel modalities of treatment.
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Allam, Sushmita L., Jean-Marie C. Bouteiller, Renaud Greget, Serge Bischoff, Michel Baudry, and Theodore W. Berger. "EONS Synaptic Modeling Platform: Exploration of Mechanisms Regulating Information Processing in the CNS and Application to Drug Discovery." In ASME 2008 3rd Frontiers in Biomedical Devices Conference. ASMEDC, 2008. http://dx.doi.org/10.1115/biomed2008-38095.

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EONS modeling platform is a resourceful learning and research tool to study the mechanisms underlying the non-linear dynamics of synaptic transmission with the aid of mathematical models. Mathematical modeling of information processing in CNS pathways, in particular modeling of molecular events and synaptic dynamics, have not been extensively developed owing to the complex computations involved in integrating a multitude of parameters. In this paper, we discuss the development of a strategy to adapt the EONS synaptic modeling platform to a multi-node environment using a parallel computational framework to compute data intensive long simulations in a shorter time frame. We describe how this strategy can be applied to (i) determine the optimal values of the numerous parameters required for fitting experimental data, (ii) determine the impact of all parameters on various aspects of synaptic transmission (under normal conditions or conditions mimicking pathological conditions) and (iii) study the effects of exogenous molecules on both healthy and pathological synaptic models.
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Saberi, A., S. Ashworth, and M. Shahinpoor. "Ionic Polymer Metal Composites (IPMCs) Substrates as Real Time Sensing Systems to Study Biological Cells Adhesion, Traction and Migration." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52278.

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In molecular cell biology, scientists employ many types of substrates over which to culture cells to study them. In many cases these substrates are made of rigid materials like glass or Mica. To mimic the in vivo substrates which are wet and soft and tissue like, they also grow cells on compliant substrates. Depend on the subject of the research, many scientists utilize soft substrates made of gels to mimic the wet and soft tissues in biological systems and to study the migration of cells and related physical characteristics such as velocity, force, adhesion and traction and in general cell migration. Study of each of these subjects and parameters require complex procedures. For instance, time-lapse microscopy techniques are commonly employed that require advanced image processing techniques to track cells. During this time span, cells should be kept in an incubator to imitate their actual environments. One of the challenging physical parameters is the measurement of the force applied by a cell on its substrate in real time. Ionic polymer metal composites (IPMCs) are smart multi-functional materials with simultaneous sensing and actuation capabilities provide a unique system to dynamically monitor cell growth, differentiation, migration, adhesion and traction. Currently micro pillars made with polyacrylamide or polyethylene glycol gels and more recently polydimethylsiloxane (PDMS) microposts from microfabricated silicon masters only give information on cellular activities after the fact. IPMCs are capable or real time sensing of cell dynamics, adhesion and traction. This paper discusses some initial observations and the potential of such cell dynamic observations and tracking.
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Saigal, Anil, Dan Ward, and Michael A. Zimmerman. "Impact Behavior of Liquid Crystalline Polymers." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89096.

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Liquid crystalline polymers have the advantage of achieving desirable mechanical properties at a competitive cost. They are composed of molecular chains that are highly oriented and tightly packed at temperatures above and below its melting point. This high degree of orientation has the following advantages: ease of processing, high mechanical strength at extreme temperatures, and resistance to mostly all chemicals, weathering, radiation, and burning. On the other hand, this high degree of orientation causes liquid crystalline polymers to have low impact strength as well as an uneven amount of shrinkage prior to molding. The objective of this study is to determine the effects of injection-molding parameters on the impact behavior of liquid crystalline polymers, in an attempt to improve and understand the processing of the material. The conditions to be tested are as follows: fill speed, initial mold temperature, and packing pressure. The impact tester used for this research was an Instron Dynatup tester. Based on the data, it is apparent that fill speed is the greatest determining factor for optimizing the impact energy of the injection-molded liquid crystalline polymers followed by high packing pressure. In addition, even though the nature of the impact energy curves for LCPs and materials such as Delrin are similar, the impact load curves as a function of time are significantly different. This can be attributed to the layered structure of LCP samples.
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