Relevant bibliographies by topics / Cell packing

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Cell packing'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 February 2022

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Journal articles on the topic "Cell packing"

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Pottmann, Helmut, Caigui Jiang, Mathias Höbinger, Jun Wang, Philippe Bompas, and Johannes Wallner. "Cell packing structures." Computer-Aided Design 60 (March 2015): 70–83. http://dx.doi.org/10.1016/j.cad.2014.02.009.

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Giammona, James, and Otger Campàs. "Physical constraints on early blastomere packings." PLOS Computational Biology 17, no. 1 (January 26, 2021): e1007994. http://dx.doi.org/10.1371/journal.pcbi.1007994.

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At very early embryonic stages, when embryos are composed of just a few cells, establishing the correct packing arrangements (contacts) between cells is essential for the proper development of the organism. As early as the 4-cell stage, the observed cellular packings in different species are distinct and, in many cases, differ from the equilibrium packings expected for simple adherent and deformable particles. It is unclear what are the specific roles that different physical parameters, such as the forces between blastomeres, their division times, orientation of cell division and embryonic confinement, play in the control of these packing configurations. Here we simulate the non-equilibrium dynamics of cells in early embryos and systematically study how these different parameters affect embryonic packings at the 4-cell stage. In the absence of embryo confinement, we find that cellular packings are not robust, with multiple packing configurations simultaneously possible and very sensitive to parameter changes. Our results indicate that the geometry of the embryo confinement determines the packing configurations at the 4-cell stage, removing degeneracy in the possible packing configurations and overriding division rules in most cases. Overall, these results indicate that physical confinement of the embryo is essential to robustly specify proper cellular arrangements at very early developmental stages.
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INOKE, Misao, Masanori MOTEGI, Shinichiro OKAMOTO, Masaru SAIKI, and Ippei TSUNODA. "HDD packing cell simulation." Proceedings of The Computational Mechanics Conference 2002.15 (2002): 793–94. http://dx.doi.org/10.1299/jsmecmd.2002.15.793.

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Szirmai, Jenő. "Horoball packings related to the 4-dimensional hyperbolic 24 cell honeycomb {3,4,3,4}." Filomat 32, no. 1 (2018): 87–100. http://dx.doi.org/10.2298/fil1801087s.

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In this paper we study the horoball packings related to the hyperbolic 24 cell honeycomb by Coxeter-Schl?fli symbol {3,4,3,4} in the extended hyperbolic 4-spaceH 4 where we allow horoballs in different types centered at the various vertices of the 24 cell. Introducing the notion of the generalized polyhedral density function, we determine the locally densest horoball packing arrangement and its density with respect to the above regular tiling. The maximal density is ? 0:71645 which is equal to the known greatest horoball packing density in hyperbolic 4-space, given in [13].
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Ma, D., K. Amonlirdviman, R. L. Raffard, A. Abate, C. J. Tomlin, and J. D. Axelrod. "Cell packing influences planar cell polarity signaling." Proceedings of the National Academy of Sciences 105, no. 48 (November 20, 2008): 18800–18805. http://dx.doi.org/10.1073/pnas.0808868105.

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Short, Ben. "Cell packing comes under the lens." Journal of Cell Biology 186, no. 6 (September 14, 2009): 768. http://dx.doi.org/10.1083/jcb.1866iti3.

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Short, Ben. "Insulin sends SEC16A packing." Journal of Cell Biology 214, no. 1 (June 27, 2016): 1. http://dx.doi.org/10.1083/jcb.2141if.

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Kocgozlu, Leyla, Thuan Beng Saw, Anh Phuong Le, Ivan Yow, Murat Shagirov, Eunice Wong, René-Marc Mège, Chwee Teck Lim, Yusuke Toyama, and Benoit Ladoux. "Epithelial Cell Packing Induces Distinct Modes of Cell Extrusions." Current Biology 26, no. 21 (November 2016): 2942–50. http://dx.doi.org/10.1016/j.cub.2016.08.057.

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Wang, Li Fei, Guang Sheng Huang, Ding Kai Liu, Fu Sheng Pan, and Maurizio Vedani. "Forming of the Battery Cell Packing in Extruded AZ31 Magnesium Alloys through Backward Extrusion." Materials Science Forum 816 (April 2015): 492–97. http://dx.doi.org/10.4028/www.scientific.net/msf.816.492.

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Mg batteries have received increasing attention mainly because of their high volumetric capacity (3832 mAhcm−3). In order to form type NO.5 cell packing for Magnesium battery the finite element simulation by Deform 3D was carried out. Then backward extrusion was conducted on an AZ31 magnesium alloy at 300°C. The results show that battery cell packing with the wall of 0.35 mm can be formed through backward extrusion with an AZ31 Mg alloys. A significant grain size refining was resulted from hot BE, however, the microstructure in different positions of the Mg cell packing was inhomogeneous. At bottom of the packing, the microstructure was formed by equiaxial and relatively coarse grains. The wall of the Mg cell packing was made of much finer grains.
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Sabio, H., T. Jeraldo, V. C. McKie, and K. M. McKie. "Erythrocyte centrifugal packing in sickle cell anemia." Clinical Hemorheology and Microcirculation 13, no. 4 (1993): 519–23. http://dx.doi.org/10.3233/ch-1993-13411.

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Dissertations / Theses on the topic "Cell packing"

1

Classen, Anne-Kathrin. "Hexagonal packing of Drosophila wing epithelial cells by the Planar Cell Polarity pathway." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2006. http://nbn-resolving.de/urn:nbn:de:swb:14-1157034530833-40169.

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The mechanisms that order cellular packing geometry are critical for the functioning of many tissues, but are poorly understood. Here we investigate this problem in the developing wing of Drosophila. The surface of the wing is decorated by hexagonally packed hairs that are uniformly oriented towards the distal wing tip. They are constructed by a hexagonal array of wing epithelial cells. We find that wing epithelial cells are irregularly arranged throughout most of development but become hexagonally packed shortly before hair formation. During the process, individual cell junctions grow and shrink, resulting in local neighbor exchanges. These dynamic changes mediate hexagonal packing and require the efficient delivery of E-cadherin to remodeling junctions; a process that depends on both the large GTPase Dynamin and the function of Rab11 recycling endosomes. We suggest that E-cadherin is actively internalized and recycled as wing epithelial cells pack into a regular hexagonal array. Hexagonal packing furthermore depends on the activity of the Planar Cell Polarity proteins. The Planar Cell Polarity group of proteins coordinates complex and polarized cell behavior in many contexts. No common cell biological mechanism has yet been identified to explain their functions in different tissues. A genetic interaction between Dynamin and the Planar Cell Polarity mutants suggests that the planar cell polarity proteins may modulate Dynamin-dependent trafficking of E-cadherin to enable the dynamic remodeling of junctions. We furthermore show that the Planar Cell Polarity protein Flamingo can recruit the exocyst component Sec5. Sec5 vesicles also co-localizes with E-cadherin and Flamingo. Based on these observations we propose that during the hexagonal repacking of the wing epithelium these proteins polarize the trafficking of E-cadherin-containing exocyst vesicles to remodeling junctions. The work presented in this thesis shows that one of the basic cellular functions of planar cell polarity signaling may be the regulation of dynamic cell adhesion. In doing so, the planar cell polarity pathway mediates the acquisition of a regular packing geometry of Drosophila wing epithelial cells. We identify polarized exocyst-dependent membrane traffic as the first basic cellular mechanism that can explain the role of PCP proteins in different developmental systems.
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Farhadifar, Reza. "Dynamics of Cell Packing and Polar Order in Developing Epithelia." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2010. http://nbn-resolving.de/urn:nbn:de:bsz:14-ds-1244035271841-50183.

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During development, organs with different shape and functionality form from a single fertilized egg cell. Mechanisms that control shape, size and morphology of tissues pose challenges for developmental biology. These mechanisms are tightly controlled by an underlying signaling system by which cells communicate to each other. However, these signaling networks can affect tissue size and morphology through limited processes such as cell proliferation, cell death and cell shape changes,which are controlled by cell mechanics and cell adhesion. One example of such a signaling system is the network of interacting proteins that control planar polarization of cells. These proteins distribute asymmetrically within cells and their distribution in each cell determines of the polarity of the neighboring cells. These proteins control the pattern of hairs in the adult Drosophila wing as well as hexagonal repacking of wing cells during development. Planar polarity proteins also control developmental processes such as convergent-extension. We present a theoretical study of cell packing geometry in developing epithelia. We use a vertex model to describe the packing geometry of tissues, for which forces are balanced throughout the tissue. We introduce a cell division algorithm and show that repeated cell division results in the formation of a distinct pattern of cells, which is controlled by cell mechanics and cell-cell interactions. We compare the vertex model with experimental measurements in the wing disc of Drosophila and quantify for the first time cell adhesion and perimeter contractility of cells. We also present a simple model for the dynamics of polarity order in tissues. We identify a basic mechanism by which long-range polarity order throughout the tissue can be established. In particular we study the role of shear deformations on polarity pattern and show that the polarity of the tissue reorients during shear flow. Our simple mechanisms for ordering can account for the processes observed during development of the Drosophila wing.
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Farhadifar, Reza. "Dynamics of Cell Packing and Polar Order in Developing Epithelia." Doctoral thesis, Technische Universität Dresden, 2009. https://tud.qucosa.de/id/qucosa%3A23750.

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During development, organs with different shape and functionality form from a single fertilized egg cell. Mechanisms that control shape, size and morphology of tissues pose challenges for developmental biology. These mechanisms are tightly controlled by an underlying signaling system by which cells communicate to each other. However, these signaling networks can affect tissue size and morphology through limited processes such as cell proliferation, cell death and cell shape changes,which are controlled by cell mechanics and cell adhesion. One example of such a signaling system is the network of interacting proteins that control planar polarization of cells. These proteins distribute asymmetrically within cells and their distribution in each cell determines of the polarity of the neighboring cells. These proteins control the pattern of hairs in the adult Drosophila wing as well as hexagonal repacking of wing cells during development. Planar polarity proteins also control developmental processes such as convergent-extension. We present a theoretical study of cell packing geometry in developing epithelia. We use a vertex model to describe the packing geometry of tissues, for which forces are balanced throughout the tissue. We introduce a cell division algorithm and show that repeated cell division results in the formation of a distinct pattern of cells, which is controlled by cell mechanics and cell-cell interactions. We compare the vertex model with experimental measurements in the wing disc of Drosophila and quantify for the first time cell adhesion and perimeter contractility of cells. We also present a simple model for the dynamics of polarity order in tissues. We identify a basic mechanism by which long-range polarity order throughout the tissue can be established. In particular we study the role of shear deformations on polarity pattern and show that the polarity of the tissue reorients during shear flow. Our simple mechanisms for ordering can account for the processes observed during development of the Drosophila wing.
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Curran, S. A. "The changing role of junctional actomyosin in epithelial cell packing during Drosophila notum development." Thesis, University College London (University of London), 2015. http://discovery.ucl.ac.uk/1472489/.

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Dramatic changes in tissue architecture can be produced by the cumulative action of individual cell movements within epithelia. During rapid developmental processes polarised recruitment of Myosin-II has previously been shown to drive changes in cell shape and direct neighbour exchange. It is important to ask whether similar mechanisms facilitate junction movement in stable epithelia, that are more prevalent in nature, and whether seemingly noisy fluctuations in junction length contribute to homeostatic tissue packing under ordinary growth conditions. By using the Drosophila notum, I have taken advantage of a model system that remains constant in overall size and shape, whilst it orders, as a result of changes in cells packing. Confocal live imaging enabled quantitative junction fluctuation measurements of control and RNAi expressing nota, before and after periods of cell division, delamination and bristle cell differentiation. Through a reduction in Myosin II (Myo II) activity, I established that junctional actomyosin was not required to drive neighbour exchange events in this tissue. Conversely, an increase in active Myo II levels was sufficient to inhibit junction fluctuations, cell intercalation and midline live cell delamination events. These results suggest a model in which Myo II independent junction length fluctuations fluidize the tissue, thereby enabling cells to move in order to relieve tissue stresses and crowding. Furthermore, over the course of pupal development a systematic re-localisation of medioapical actomyosin to the junction correlated with a rise in line tension and an increase in tissue order. Thus, changes to actomyosin levels appear to tune neighbour exchange in a process akin to annealing, as the tissue moves from a state of disorder to hexagonal packing prior to the completion of development.
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Moussaoui, Hamza. "Microstructural optimization of Solid Oxide Cells : a coupled stochastic geometrical and electrochemical modeling approach applied to LSCF-CGO electrode." Thesis, Université Grenoble Alpes (ComUE), 2019. http://www.theses.fr/2019GREAI028/document.

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Ce travail porte sur la compréhension de l’impact de la microstructure sur les performances des Cellules à Oxyde Solide (SOC), avec une illustration sur l’électrode à oxygène en LSCF-CGO. Une approche couplant de la modélisation géométrique et électrochimique a été adoptée pour cet effet. Le modèle des champs aléatoires plurigaussiens et un autre basé sur des empilements de sphères ont été développés et adaptés pour les microstructures des SOCs. Ces modèles 3D de géométrie stochastique ont été ensuite validés sur différentes électrodes reconstruites par nano-holotomographie aux rayons X au synchrotron ou par tomographie avec un microscope électronique à balayage couplé à une sonde ionique focalisée. Ensuite, des corrélations semi-analytiques ont été proposées et validées sur une large base de microstructures synthétiques. Ces relations permettent de relier les paramètres ‘primaires’ de l’électrode (la composition, la porosité et les diamètres des phases) aux paramètres qui pilotent les réactions électrochimiques (la densité de points triples, les surfaces spécifiques interphases) et sont particulièrement pertinents pour les équipes de mise-en-forme des électrodes qui ont plus de contrôle sur ce premier ensemble de paramètres. Concernant la partie portant sur l’électrochimie, des tests sur une cellule symétrique en LSCF-CGO ont permis de valider un modèle déjà développé au sein du laboratoire, et qui permet de simuler la réponse électrochimique d’une électrode à oxygène à partir des données thermodynamiques et de microstructure. Finalement, le couplage des deux modèles validés a permis d’étudier l’impact de la composition des électrodes, leur porosité ou encore taille des grains sur leurs performances. Ces résultats pourront guider les équipes de mise-en-forme des électrodes vers des électrodes plus optimisées
This work aims at better understanding the impact of Solid Oxide Cells (SOC) microstructure on their performance, with an illustration on an LSCF-CGO electrode. A coupled 3D stochastic geometrical and electrochemical modeling approach has been adopted. In this frame, a plurigaussian random field model and an in-house sphere packing algorithm have been adapted to simulate the microstructure of SOCs. The geometrical models have been validated on different electrodes reconstructed by synchrotron X-ray nano-holotomography or focused ion-beam tomography. Afterwards, semi-analytical microstructural correlations have been proposed and validated on a large dataset of representative synthetic microstructures. These relationships allow establishing the link between the electrode ‘basic’ parameters (composition, porosity and grain size), to the ‘key’ electrochemical parameters (Triple Phase Boundary length density and Specific surface areas), and are particularly useful for cell manufacturers who can easily control the first set of parameters. Concerning the electrochemical part, a reference symmetrical cell made of LSCF-CGO has been tested in a three-electrode setup. This enabled the validation of an oxygen electrode model that links the electrode morphological parameters to its polarization resistance, taking into account the thermodynamic data. Finally, the coupling of the validated models has enabled the investigation of the impact of electrode composition, porosity and grain size on the cell electrochemical performance, and thus providing useful insights to cell manufacturers
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Mekkaoui, Leila. "Lentiviral vector purification using genetically encoded biotin mimic in packaging cell." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10053191/.

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Lentiviral vectors (LVs) are powerful tools in gene therapy that have recently witnessed an increasing demand in both research and clinical applications. Current LVs purification represents the main bottle neck in their application as several methods are employed which are time consuming, cumbersome and yield low recoveries. The aim of this project was to develop a one-step method to specifically and efficiently purify LVs, with high vector yields and reduced levels of impurities, using the biotin-streptavidin system. Herein, packaging 293T cells were genetically engineered with biotin mimicking synthetic peptides and different cell membrane anchoring strategies for optimal streptavidin binding were tested. We have identified a flanked disulphide-constrained peptide, termed Ctag (ECHPQGPPCIEGRK), displayed on a CD8α stalk to be the most promising. LVs were modified with Ctag by its random incorporation onto viral surfaces during budding, without viral protein engineering or hindrance on infectivity. The expression of Ctag on LVs allowed complete capture of infectious particles by streptavidin magnetic beads. As Ctag binds streptavidin in the nanomolar range, we hypothesised that gentle elution from streptavidin matrix should occur by biotin’s competitive binding. Accordingly, addition of micromolar concentrations of biotin to captured LVs resulted in an overall yield of ≥60%. Analysis of eluted LVs revealed high purity levels, with a ≤3-log and 2-log reduction of DNA contamination and host cell proteins, respectively. This one-step purification was also tested for scalable vector processing using streptavidin monolith affinity chromatography and preliminary results were encouraging with 20% overall yield. In conclusion, we developed a single-step affinity chromatography which allows specific purification and concentration of infectious vectors modified with a biotin mimic. Based on intended usage, efficient LV purification can be achieved using both magnetic beads and column chromatography. This method will be of valuable use for both research and clinical applications of LVs.
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Coulberson, Arlena. "Packaging DNA for delivery to cells by electroporation." Thesis, Georgia Institute of Technology, 2002. http://hdl.handle.net/1853/11178.

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Pizzato, Massimo. "Retroviral vectors for gene therapy : characterisation of vector particle-cell interaction and development of novel packaging cell lines." Thesis, Institute of Cancer Research (University Of London), 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313365.

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Penaud, Magalie. "Characterization of rAAV vectors packaging in baculovirusinfected insect cells." Thesis, Nantes, 2018. http://www.theses.fr/2018NANT1003.

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Les vecteurs dérivés du virus adéno-associé (AAVr) constituent des outils de choix pour le transfert de gène in vivo. Leur innocuité a notamment contribué à leur attractivité et leur utilisation dans des essais cliniques de thérapie génique. Afin d'étendre le champ de leur application au traitement de maladies systémiques, un défi majeur reste à relever : leur production à grande échelle. Le système d'infection de cellules d'insecte par des baculovirus peut répondre à ce challenge, pourtant la biologie de l'AAV dans ces cellules reste méconnue. Ceci se répercute par la présence de particules vides ou par une perte d'infectiosité des vecteurs viraux produits. Le travail présenté dans ce manuscrit a pour objectifs de 1) déterminer l'efficacité et la spécificité d'encapsidation du gène d'intérêt dans les capsides d'AAVr 2) étudier le lien entre ces paramètres et l'expression des protéines Rep et 3) définir le rôle de la protéine AAP (assembly-activating protein) en cellules d'insecte. De façon inédite, nous avons montré que moins de 30% des particules générées contenaient le transgène et que l'ADN baculoviral représentait jusqu'à 2,1% du contenu des capsides d'AAV, avec une prédominance pour les séquences proches des ITR (inverted terminal repeats). Enfin, nous avons démontré que l'AAP était essentielle pour l'assemblage des particules d'AAV2 dans les cellules Sf9. Ce projet participe non seulement à l'élucidation des mécanismes· d'encapsidation des AAV dans les cellules d'insecte mais répond également aux exigences des organismes réglementaires en proposant une technique d' avant-garde d'évaluation des contaminants ADN présents dans les stocks de vecteurs AAV
Due to their efficiency and safety, recombinant adenoassociated virus (rAAV) vectors have been widely used for gene therapy. ln the past few years, there have been a large number of positive clinical outputs using AAVbased products spanning broad therapeutic areas. However, the generation of rAAV at sufficient quantity and quality appears as a bottleneck on the path to commercialization. The baculovirus-infected insect cell platform has proven to tackle this challenge, yet, surprisingly, the biology of rAAV in insect cells remains largely unknown. As a result, current vectors suffer from quality problems such as generation of empty particles or reduced infectivity. The objectives of the present work are 1) to determine the rAAV packaging efficiency and specificity in insect cells 2) to investigate the link between packaging and Rep proteins expression, and 3) to decipher the role of the assembly-activating protein (AAP). First, we showed that less than 30% of rAAV particles contained the gene of interest in S19 cells cleared lysate. Second, we found that baculoviral DNA contamination is below 2.1% of encapsidated DNA, with a higher representativity for sequences close to the inverted terminal repeats. Finally, we demonstrated that functional AAP is strictly required for rAAV2 particles assembly in insect cells. Altogether, our data provide novel insights into the biological mechanism of rAAV genome packaging in insect cells and suggest that there is still room for improvement in order to increase vector quality. From a safety perspective, this project has allowed the development of an accurate quality control method to assess DNA contamination in viral vector stocks
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Liu, Yan. "Superhydrophobic surfaces for electronic packaging and energy applications." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/52164.

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Superhydrophobic surfaces, which display water contact angles of larger than 150°, have attracted more and more attention due to their importance in both fundamental research and practical applications. This dissertation is mainly focused on the fundamental understanding and exploring applications of superhydrophobic surfaces. First, some specific examples of superhydrophobic surface fabrication were given, which include superoleophobic Si surface, robust superhydrophobic SiC surface, and reversible wettability nanocomposite films. Based on the study of superhydrophobic surfaces, the application of superhydrophobic surfaces in electronic packaging were explored. Superhydrophobic silica/epoxy nanocomposite coating serves as an encapsulant to improve the electronic device reliability. Such superhydrophobic coating showed good stability under humidity at elevated temperatures and was applied on the triple track resistors test coupons. In addition, the applications of superhydrophobic surfaces in solar cells were studied. Two multi-functional hierarchical structure solar cells with self-cleaning, low reflection and high efficiency properties were built up by coating or etching methods.
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Books on the topic "Cell packing"

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Kuang, Ken, and Keith Easler, eds. Fuel Cell Electronics Packaging. Boston, MA: Springer US, 2007. http://dx.doi.org/10.1007/978-0-387-47324-6.

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Thathy, Parineeta. Packaging of the fastidious enteric adenoviruses in cell culture. Ottawa: National Library of Canada, 1995.

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Solar module packaging: Polymeric requirements and selection. Boca Raton: Taylor & Francis, 2011.

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Agro, S. C. Development of new low-cost, high-performance, PV module encapsulant/packaging materials: Annual technical report, phase 1, 22 October 2002-30 September 2003. Golden, Colo: National Renewable Energy Laboratory, 2004.

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Agro, S. C. Development of new low-cost, high-performance, PV module encapsulant/packaging materials: Annual technical report, phase 1, 22 October 2002-30 September 2003. Golden, Colo: National Renewable Energy Laboratory, 2004.

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Agro, S. C. Development of new low-cost, high-performance, PV module encapsulant/packaging materials: Annual technical report, phase 1, 22 October 2002-30 September 2003. Golden, Colo: National Renewable Energy Laboratory, 2004.

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Agro, S. C. Development of new low-cost, high-performance, PV module encapsulant/packaging materials: Annual technical report, phase 1, 22 October 2002-30 September 2003. Golden, Colo: National Renewable Energy Laboratory, 2004.

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Agro, S. C. Development of new low-cost, high-performance, PV module encapsulant/packaging materials: Annual technical report, phase 1, 22 October 2002-30 September 2003. Golden, Colo: National Renewable Energy Laboratory, 2004.

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Agro, S. C. Development of new low-cost, high-performance, PV module encapsulant/packaging materials: Annual technical report, phase 1, 22 October 2002-30 September 2003. Golden, Colo: National Renewable Energy Laboratory, 2004.

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Agro, S. C. Development of new low-cost, high-performance, PV module encapsulant/packaging materials: Annual technical report, phase 1, 22 October 2002-30 September 2003. Golden, Colo: National Renewable Energy Laboratory, 2004.

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Book chapters on the topic "Cell packing"

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Fletcher, Martyn, Duncan McFarlane, Alan Thorne, Dennis Jarvis, and Andrew Lucas. "Evaluating a Holonic Packing Cell." In Holonic and Multi-Agent Systems for Manufacturing, 246–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-540-45185-3_23.

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Lück, Jacqueline, and Hermann B. Lück. "Cellworks with cell rewriting and cell packing for plant morphogenesis." In Lecture Notes in Computer Science, 536–49. Berlin, Heidelberg: Springer Berlin Heidelberg, 1996. http://dx.doi.org/10.1007/3-540-61228-9_110.

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Vrba, Pavel, Miloslav Radakovič, Marek Obitko, and Vladimír Mařík. "Semantic Extension of Agent-Based Control: The Packing Cell Case Study." In Holonic and Multi-Agent Systems for Manufacturing, 47–60. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03668-2_5.

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Singh, Digvijay, and S. P. Singh. "Estimation of Energy Generation and Daylight Availability for Optimum Solar Cell Packing Factor of Building Integrated Semitransparent Photovoltaic Skylight." In Springer Proceedings in Energy, 351–59. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0235-1_28.

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Wang, Xuan. "Solid Oxide Fuel Cell." In Fuel Cell Electronics Packaging, 97–111. Boston, MA: Springer US, 2007. http://dx.doi.org/10.1007/978-0-387-47324-6_5.

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Varga, Áron. "Introduction to Fuel Cell Technology." In Fuel Cell Electronics Packaging, 1–32. Boston, MA: Springer US, 2007. http://dx.doi.org/10.1007/978-0-387-47324-6_1.

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Lewis, Alan. "Automated Fluid Dispensing for Fuel Cell Manufacture and Assembly." In Fuel Cell Electronics Packaging, 181–204. Boston, MA: Springer US, 2007. http://dx.doi.org/10.1007/978-0-387-47324-6_10.

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Shah, Virang G., Donald J. Hayes, and David B. Wallace. "Ink-Jet as Direct-Write Technology for Fuel Cell Packaging and Manufacturing." In Fuel Cell Electronics Packaging, 205–37. Boston, MA: Springer US, 2007. http://dx.doi.org/10.1007/978-0-387-47324-6_11.

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Zhu, Qingshan, Lian Peng, and Tao Zhang. "Stable Glass Seals for Intermediate Temperature (IT) SOFC Applications." In Fuel Cell Electronics Packaging, 33–60. Boston, MA: Springer US, 2007. http://dx.doi.org/10.1007/978-0-387-47324-6_2.

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Jasinski, Piotr, Toshio Suzuki, Vladimir Petrovsky, and Harlan U. Anderson. "A Novel Technology of Solid Oxide Fuel Cell Fabrication." In Fuel Cell Electronics Packaging, 61–84. Boston, MA: Springer US, 2007. http://dx.doi.org/10.1007/978-0-387-47324-6_3.

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Conference papers on the topic "Cell packing"

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Gill, David, and Bryan J. Farley. "Improving a Valve Packing Model to Increase Packing Lifetime in Molten Salt." In ASME 2013 7th International Conference on Energy Sustainability collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/es2013-18363.

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Valves used in molten salt thermal energy storage systems often utilize conventional packing methodology and materials. These packing materials often exhibit relatively short lifetimes because of the reactive interaction of the salt and packing. Past research has indicated that valve packing lifetime is affected by both stress and temperature in the packing. Because of this interaction, it is important to understand the stress in the packing and to find ways to reduce the packing stress. A finite element model of a valve stem/packing system was created and material properties of the packing were determined and validated against previous work. The model was then used to evaluate the stress induced in the packing system through linear axial motion and then extended to include rotational stem motion as well. The analysis confirmed previous results that axial translation created a significant amount of stress in the valve packing. The newly included rotational motion of the valve stem was found to affect the packing stress only minimally. This result suggests that development of better rotary valves would be very useful for utilization in molten salt service, especially as the temperature of the salts are increased in an effort to achieve higher power cycle efficiencies.
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Chowdhury, Rahul, and Malgorzata Marciniak. "Optimization of solar cell packing models for flexible surfaces." In Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX, edited by Alexandre Freundlich, Masakazu Sugiyama, and Stéphane Collin. SPIE, 2020. http://dx.doi.org/10.1117/12.2543397.

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Krishnan, Shankar, Suresh V. Garimella, and Jayathi Y. Murthy. "Simulation of Thermal Transport in Open-Cell Metal Foams: Effect of Periodic Unit Cell Structure." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-14044.

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Direct simulation of thermal transport in open-cell metal foams is conducted using different periodic unit cell geometries. The periodic unit cell structures are constructed by assuming the pore space to be spherical and subtracting the pore space from a unit cube of the metal. Different types of packing arrangement for spheres are considered - Body Centered Cubic, Face Centered Cubic, and the A15 lattice (similar to a Weaire-Phelan unit cell) - which give rise to different foam structures. Effective thermal conductivity, pressure drop and Nusselt number are computed by imposing periodic boundary conditions for aluminum foams saturated with air or water. The computed values compare well with existing experimental measurements and semi-empirical models for porosities greater than 80%. The effect of different foam packing arrangements on the computed thermal and fluid flow characteristics is discussed. The capabilities and limitations of the present approach are identified.
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Do, Hyun Min, Taeyong Choi, Dongil Park, and Jinho Kyung. "Automatic cell production for cellular phone packing using two dual-arm robots." In 2015 15th International Conference on Control, Automation and Systems (ICCAS). IEEE, 2015. http://dx.doi.org/10.1109/iccas.2015.7364713.

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Yan, Yan, and Gregory S. Chirikjian. "Molecular Replacement for Multi-Domain Structures Using Packing Models." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48583.

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Molecular replacement (MR) is frequently used to obtain phase information for a unit cell packed with a macromolecule of unknown structure. The goal of MR searches is to place a homologous/similar molecule in the unit cell so as to maximize the correlation with x-ray diffraction data. MR software packages typically perform rotation and translation searches separately. This works quite well for single-domain proteins. However, for multi-domain structures and complexes, computational requirements can become prohibitive and the desired peaks can become hidden in a noisy landscape. The main contribution of our approach is that computationally expensive MR searches in continuous configuration space are replaced by a search on a relatively small discrete set of candidate packing arrangements of a multi-rigid-body model. These candidate arrangements are generated by collision detections on a coarse grid in the configuration space first. The list of feasible arrangements is short because packing constraints together with unit cell symmetry and geometry impose strong constraints. After computing Patterson correlations of the collision-free arrangements, an even shorter list can be obtained using the 10 candidates with highest correlations. In numerical trials, we found that a candidate from the feasible set is usually similar to the arrangement of the target structure within the unit cell. To further improve the accuracy, a Rapidly-exploring Random Tree (RRT) can be applied in the neighborhood of this packing arrangement. Our approach is demonstrated with multi-domain models in silico for 3D, with ellipsoids representing both the domains of the model and target structures. Configurations are defined by sets of angles between the ellipsoids. Our results show that an approximate configuration can be found with mean absolute error (MAE) less than 5 degrees.
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Misra, M., Madan Lal Singla, P. Kapur, and C. Ghansyam. "Compact packing of CdS nanoparticle in flower like TiO2 nanorods for DSSC solar cell." In 2012 International Conference on Devices, Circuits and Systems (ICDCS 2012). IEEE, 2012. http://dx.doi.org/10.1109/icdcsyst.2012.6188745.

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Abolfathi, N., G. Karami, and M. Ziejewski. "Micromechanical Analysis of Tissues: The Effect of Cell Adhesion to Extra Cellular Matrix." In ASME 2007 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2007. http://dx.doi.org/10.1115/sbc2007-176270.

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Modeling of interactions between cell and extra cellular matrix (ECM) is essential in a cell and tissue injury study. Several studies have been conducted to realize the role of mechanical property of a cell and ECM in a tissue exposed to an external loading. In this study we have used a micromechanical approach by assuming two representative volume elements (RVE) with different packing of cell inside the matrix to characterize the mechanical property of the composite formed by the cell and the ECM in a tissue. In the micromechanical modeling procedure, the cell-ECM adhesion will be studied in detail. The results will clarify the role of cell adhesion in load transferring characteristics inside the cell – ECM composite.
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Breugem, Wim-Paul, Vincent van Dijk, and René Delfos. "An Efficient Immersed Boundary Method Based on Penalized Direct Forcing for Simulating Flows Through Real Porous Media." In ASME 2012 Fluids Engineering Division Summer Meeting collocated with the ASME 2012 Heat Transfer Summer Conference and the ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/fedsm2012-72299.

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A computationally efficient Immersed Boundary Method (IBM) based on penalized direct forcing was employed to determine the permeability of a real porous medium. The porous medium was composed of about 9000 glass beads with an average particle diameter of 1.93 mm and a porosity of 0.367. The forcing of the IBM depends on the local solid volume fraction within a computational grid cell. The latter could be obtained from a high-resolution X-ray Computed Tomography (CT) scan of the packing. An experimental facility was built to determine the permeability of the packing experimentally. Numerical simulations were performed for the same packing based on the data from the CT scan. For a scan resolution of 0.1 mm the numerical value for the permeability was nearly 70% larger than the experimental value. An error analysis indicated that the scan resolution of 0.1 mm was too coarse for this packing.
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Baker, Brendon M., Giana Montero, and Robert L. Mauck. "Removal of Sacrificial Fibers Enhances Long Term Cell and Matrix Distribution in Aligned Nanofibrous Scaffolds." In ASME 2009 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2009. http://dx.doi.org/10.1115/sbc2009-206856.

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Given their ability to dictate initial cell alignment and subsequent matrix organization, aligned electrospun scaffolds are a fitting means for engineering fiber-reinforced, anisotropic tissues such as tendon, ligament, the knee meniscus, and the annulus fibrosus [1–3]. However, one commonly observed limitation of such scaffolds is the relatively slow infiltration rates of surface-seeded cells, where the central thicknesses of constructs cultured for 10 weeks remain devoid of cells [2]. This limitation arises from the tight packing of fibers which yields small pore sizes, thereby hampering cell migration. Towards accelerating cell ingress, we have recently reported on two-polymer composite scaffolds containing both slow eroding poly(ε-caprolactone) (PCL) fibers as well as water-soluble poly(ethylene oxide) (PEO) fibers that serve as space holders during scaffold formation [4]. Removal of these PEO fibers prior to seeding resulted in improved cell infiltration after 3 weeks, but the long term maturation of such constructs has yet to be characterized. To assess the effect of sacrificial PEO fiber content on construct growth, a triple-jet electrospinning device was employed to generate PCL/PEO scaffolds with PEO fiber fractions ranging from 0 to 60%. After seeding with mesenchymal stem cells (MSCs), constructs were clamped in custom grips to maintain strip morphology. The mechanical and biochemical maturation of constructs was assessed over 9 weeks of free swelling culture in a chemically defined medium (CDM), along with cell infiltration and matrix distribution. We hypothesized that enhanced pore size in dual-fiber constructs would lead to not only a better distribution of cells, but also larger increases in stiffness resulting from enhanced matrix production and distribution.
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Zhou, Ronghui, Dmitri Lastochkin, and Hsueh-Chia Chang. "Anomalous Capillary Wetting Dynamics of Blood Suspensions." In ASME 2004 2nd International Conference on Microchannels and Minichannels. ASMEDC, 2004. http://dx.doi.org/10.1115/icmm2004-2430.

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When blood suspension penetrates a capillary radius by wetting, the advancing meniscus decelerates rapidly when the blood cell volume fraction is above a certain critical concentration. Below the critical concentration, blood suspension behaves like a homogeneous liquid and the wetted length increases as the 0.5 power of time. We attribute the former deceleration dynamics to a unique packing mechanism behind the meniscus that is driven by radial migration of the deformable blood cells. Unlike rigid particle suspensions, a concentrated slug develops behind the meniscus of blood suspension and its concentration increases linearly with respect to the meniscus position downstream due to this packing mechanism. As the suspension viscosity blow up with a −2 power with respect to blood concentration φ at maximum packing, viscous dissipation at the slug quickly controls the meniscus speed if the slug length is comparable to the total wetted length, thus significantly delaying the meniscus penetration dynamics. The critical concentration is measured empirically and shown to be a linear function of the capillary radius R with a simple scaling theory. For 40% whole blood, penetration rate is too slow, in the order of μm /s at 2cm from the entrance, to be widely used in sample loading for miniature diagnostic kits with diameter less than 26 micron.
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Reports on the topic "Cell packing"

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HUMPHREYS, D. 324 Building B-Cell Pressurized Water Reactor Spent Fuel Packaging & Shipment RL Readiness Assessment Final Report [SEC 1 Thru 3]. Office of Scientific and Technical Information (OSTI), August 2002. http://dx.doi.org/10.2172/808250.

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