Artykuły w czasopismach: „Tridimensional network”

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Liang, Mei Lian, Jun Li Wang i Wei Dong Zhao. "Optimization Analysis of the Tridimensional Container Terminal Transmission System". Applied Mechanics and Materials 157-158 (luty 2012): 102–5. http://dx.doi.org/10.4028/www.scientific.net/amm.157-158.102.

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Optimization analysis of transmission system simulation models and discussion on the optimal matching of transmission equipments are carried out based on the existing tridimensional rail power driven container terminal transmission system network. Two-dimensional animation display of the transmission system is realized through multiple simulations utilizing simulation software. The simulation analysis indicates the average operating efficiency of the equipments such as quay crane and gantry crane have reached 82 percent. The simulation results have some valuable reference for the actual production and the realization of the tridimensional transmission system.

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Paredes-García, Verónica, Ignacio Rojas, Rosa Madrid, Andres Vega, Efrén Navarro-Moratalla, Walter Cañón-Mancisidor, Evgenia Spodine i Diego Venegas-Yazigi. "Structural and magnetic characterization of the tridimensional network [Fe(HCO2)3]n·nHCO2H". New Journal of Chemistry 37, nr 7 (2013): 2120. http://dx.doi.org/10.1039/c3nj00023k.

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Pearce, Paul E., Gwenaelle Rousse, Olesia M. Karakulina, Joke Hadermann, Gustaaf Van Tendeloo, Dominique Foix, François Fauth, Artem M. Abakumov i Jean-Marie Tarascon. "β-Na1.7IrO3: A Tridimensional Na-Ion Insertion Material with a Redox Active Oxygen Network". Chemistry of Materials 30, nr 10 (23.04.2018): 3285–93. http://dx.doi.org/10.1021/acs.chemmater.8b00320.

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Pan, Cheng Xian, Rui Peng, Jun Li Wang i Qing Lu. "OOSPN-Based Modeling and Simulation of Tridimensional Rail Net Transmission System in Container Terminal". Applied Mechanics and Materials 58-60 (czerwiec 2011): 1240–45. http://dx.doi.org/10.4028/www.scientific.net/amm.58-60.1240.

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Object-Oriented Stochastic Petri Net (OOSPN) is utilized concerning the complexity of container terminal tridimensional rail transmission system network. It simplifies the structure and modeling with object-oriented and hierarchy idea, while the efficiency of each state is detected based on Stochastic Petri Net performance analysis. Thereby, it finds the system bottleneck which also provides reference for the improvement of the program. The efficiency indicators are obtained by analysis and construction of container terminal transmission system as well.

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Song, Jian Tao, Jin Ling Si, Qiao Jing Peng, Juan Lu i Li Ying Wang. "Design and Realization of Management and Control System in Tobacco Factory Warehouse Based on VC6". Applied Mechanics and Materials 608-609 (październik 2014): 420–24. http://dx.doi.org/10.4028/www.scientific.net/amm.608-609.420.

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The paper proposed the management and monitoring system of automatic tridimensional warehouse based on network communication, the main characters and realization of communication program developing with VC6 are expounded in the paper based on industrial Ethernet communication. the system is divided into the automated warehouse management and control system functional modules. And the communication model between the supervisor computer and the ARM2440 is presented. Experimental results show that the design has lower cost and achieves system integration management and control function.

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Roovers, Jacques. "Synthesis and Properties of Ring Polybutadienes". Rubber Chemistry and Technology 62, nr 1 (1.03.1989): 33–41. http://dx.doi.org/10.5254/1.3536233.

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Abstract Much of polymer science is concerned with the linear joining of monomers and the properties of the new materials that emerge from this process. Of almost equal importance is the formation of tridimensional networks as the result of branching and crosslinking reactions. Ring formation has always been considered an unavoidable consequence of extensive crosslinking and, from the theoretical point, it is often neglected. Nevertheless, rings may contribute to the network properties by means of permanent entanglements. Indeed, rings alone can form special permanent networks without any chemical connectivity between the rings. The interest in flexible ring polymers has grown considerably in recent years with 32, 21, and 34 papers published in 1985, 1986, and 1987 respectively, dealing equally with experimental or theoretical aspects, although the theoretical and experimental papers do not always address the same problems. Most significant has been the work of Semlyen and his coworkers on ring poly(dimethylsiloxane) with molecular weights up to 30 000. This is not very much above the entanglement molecular weight of poly(dimethylsiloxane) (Me=12 000) but the low Tg and chemical inertness of the polymer made it ideally suited for ring-in-network entrapment studies.

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DEMIR, Bunyamin, Ikbal ESKI, Zeynel A. KUS i Sezai ERCISLI. "Prediction of Physical Parameters of Pumpkin Seeds Using Neural Network". Notulae Botanicae Horti Agrobotanici Cluj-Napoca 45, nr 1 (10.06.2017): 22–27. http://dx.doi.org/10.15835/nbha45110429.

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The design of the machines and equipment used in harvest and post-harvest processing should be compatible with the physical, mechanical and rheological characteristics of the fruits and vegetables. In machine design for agricultural products, several characteristics of relevant products and seeds should be known ahead. Designers can either measure all these design parameters one by one, or they may use intelligent systems to estimate such parameters. Neural networks (NNs) are new computational tools that provide a quick and accurate means of physical properties prediction of agricultural materials, and have been shown to perform well in comparison with traditional methods. In this research, some physical properties of pumpkin (Cucurbita pepo L.) seeds, including linear dimensions, volume, surface and projected area, geometric mean diameter and sphericity were calculated tridimensional in lab conditions. Then, prediction of these parameters was carried out using NNs. The research was divided into two parts; experimental investigation and simulation analysis with NNs. Back Propagation Neural Network (BPNN) and Radial Basis Neural Network (RBNN) structures were employed to estimate physical parameters of the pumpkin seeds. The Root Mean Squared Error (RMSE) was 0.6875 for BPNN and 0.0025 for RBNN structures. The RBNN structure was superior in prediction and could be used as an alternative approach to conventional methods.

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Kosugi, George, Hiroshi Ohtani, Toshiyuki Sasaki, Hisashi Koyano, Yasuhiro Shimizu, Michitoshi Yoshida, Minoru Sasaki, Kentaro Aoki i Ayumi Baba. "Spectro-nebula graph: A Tridimensional Spectroscopic System Based on a Local Area Network of Personal Computers". Publications of the Astronomical Society of the Pacific 107 (maj 1995): 474. http://dx.doi.org/10.1086/133577.

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Torres-Giner, Sergio, Alberto Chiva-Flor i José Luis Feijoo. "Injection-molded parts of polypropylene/multi-wall carbon nanotubes composites with an electrically conductive tridimensional network". Polymer Composites 37, nr 2 (5.09.2014): 488–96. http://dx.doi.org/10.1002/pc.23204.

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Bélisle, C., i G. Sainte-Marie. "Blood vascular network of the rat lymph node: Tridimensional studies by light and scanning electron microscopy". American Journal of Anatomy 189, nr 2 (październik 1990): 111–26. http://dx.doi.org/10.1002/aja.1001890203.

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Bi, Sheng, Yao Wang, Xu Han, Rongyi Wang, Zehui Yao, Qiangqiang Chen, Xiaolong Wang, Chengming Jiang i Kyeiwaa Asare-Yeboah. "Artificial neural network reinforced topological optimization for bionics-based tridimensional stereoscopic hydrogen sensor design and manufacture". International Journal of Hydrogen Energy 53 (styczeń 2024): 749–59. http://dx.doi.org/10.1016/j.ijhydene.2023.11.325.

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Flores, Leonã Da Silva, Roselia Ives Rosa, Jefferson Da Silva Martins, Roberto Rosas Pinho, Renata Diniz i Charlane Cimini Corrêa. "Reticular synthesis, topological studies and physicochemical properties of a 3D manganese(II) coordination network [Mn3(BTC)2(DMSO)4]n". European Journal of Chemistry 10, nr 2 (30.06.2019): 180–88. http://dx.doi.org/10.5155/eurjchem.10.2.180-188.1882.

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In order to build a metal-organic framework with mixed ligands (acid-acid), a 3D coordination network based on manganese metal center was obtained [Mn3(BTC)2(DMSO)4]n; where BTC = Benzene-1,3,5-tricarboxylic acid and DMSO = Dimethylsulfoxide. The crystal structure was determined by single crystal X-ray diffraction, showing the assembly of a tridimensional 3,6-connected non-entangled polymeric network, with RTL topology. The secondary building unit (SBU) acts as a node of the 3-periodic expansion and involves carboxylate- and oxo-bridged metals. The DMSO employed in the synthesis is chemically involved in the coordination as a µ2-O bridge between distinct manganese metal centers. The structural characterization of the material was supported by spectroscopic (infrared absorption and Raman scattering), thermal (TG, DTG, and DTA) and elemental analysis.

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Bulgin, D. V., i O. V. Andreeva. "THERAPEUTIC ANGIOGENESIS BY GROWTH FACTORS AND BONE MARROW MONONUCLEAR CELLS ADMINISTRATION: BIOLOGICAL FOUNDATION AND CLINICAL PROSPECTS". Russian Journal of Transplantology and Artificial Organs 17, nr 3 (9.10.2015): 89–111. http://dx.doi.org/10.15825/1995-1191-2015-3-89-111.

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Angiogenesis is the process of new capillary formation by migration and proliferation of differentiated endothelial cells from pre-existing microvascular network. A number of angiogenic molecules and cell populations are involved in this complex of new vessel formation cascades resulting in the determination and organization of new tridimensional vascular network. The goal of therapeutic angiogenesis is to stimulate angiogenesis to improve perfusion, to deliver survival factors to sites of tissue repair, to mobilize regenerative stem cell populations, andultimately to restore form and function to the tissue. Growth factors and bone marrow as a source of bone marrow mononuclear cells represent a very interesting research fi eld for the realization of therapeutic angiogenesis in ischemic tissues. They provide a potential key component in the healing processes of ischemic injured tissues.

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Bornschlögl, Thomas, Lucien Bildstein, Sébastien Thibaut, Roberto Santoprete, Françoise Fiat, Gustavo S. Luengo, Jean Doucet, Bruno A. Bernard i Nawel Baghdadli. "Keratin network modifications lead to the mechanical stiffening of the hair follicle fiber". Proceedings of the National Academy of Sciences 113, nr 21 (9.05.2016): 5940–45. http://dx.doi.org/10.1073/pnas.1520302113.

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The complex mechanical properties of biomaterials such as hair, horn, skin, or bone are determined by the architecture of the underlying fibrous bionetworks. Although much is known about the influence of the cytoskeleton on the mechanics of isolated cells, this has been less studied in tridimensional tissues. We used the hair follicle as a model to link changes in the keratin network composition and architecture to the mechanical properties of the nascent hair. We show using atomic force microscopy that the soft keratinocyte matrix at the base of the follicle stiffens by a factor of ∼360, from 30 kPa to 11 MPa along the first millimeter of the follicle. The early mechanical stiffening is concomitant to an increase in diameter of the keratin macrofibrils, their continuous compaction, and increasingly parallel orientation. The related stiffening of the material follows a power law, typical of the mechanics of nonthermal bending-dominated fiber networks. In addition, we used X-ray diffraction to monitor changes in the (supra)molecular organization within the keratin fibers. At later keratinization stages, the inner mechanical properties of the macrofibrils dominate the stiffening due to the progressive setting up of the cystine network. Our findings corroborate existing models on the sequence of biological and structural events during hair keratinization.

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Consolaro, Alberto. "Miniplates and mini-implants: bone remodeling as their biological foundation". Dental Press Journal of Orthodontics 20, nr 6 (grudzień 2015): 16–31. http://dx.doi.org/10.1590/2177-6709.20.6.016-031.oin.

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Abstract The tridimensional network formed by osteocytes controls bone design by coordinating cell activity on trabecular and cortical bone surfaces, especially osteoblasts and clasts. Miniplates and mini-implants provide anchorage, allowing all other orthodontic and orthopedic components, albeit afar, to deform and stimulate the network of osteocytes to command bone design remodeling upon "functional demand" established by force and its vectors. By means of transmission of forces, whether near or distant, based on anchorage provided by miniplates, it is possible to change the position, shape and size as well as the relationship established between the bones of the jaws. Understanding bone biology and the continuous remodeling of the skeleton allows the clinician to perform safe and accurate rehabilitation treatment of patients, thus increasing the possibilities and types of intervention procedures to be applied in order to restore patient's esthetics and function.

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Buono, Dario, Emma Frosina, Antonio Mazzone, Umberto Cesaro i Adolfo Senatore. "Study of a Pump as Turbine for a Hydraulic Urban Network Using a Tridimensional CFD Modeling Methodology". Energy Procedia 82 (grudzień 2015): 201–8. http://dx.doi.org/10.1016/j.egypro.2015.12.020.

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Crosnier-Lopez, M. P., H. Duroy i J. L. Fourquet. "Ba3V2O4F8: [V4(O,F)20]8? tetrameric groups of octahedra inserted a tridimensional network of (FBa4) tetrahedra". Zeitschrift f�r anorganische und allgemeine Chemie 619, nr 9 (wrzesień 1993): 1597–602. http://dx.doi.org/10.1002/zaac.19936190915.

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Deng, Huai Yong. "Design and Realization of Management and Control System of Warehouse Based on VC6". Applied Mechanics and Materials 539 (lipiec 2014): 878–81. http://dx.doi.org/10.4028/www.scientific.net/amm.539.878.

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The designing and realizing methods of network communication of the management and monitoring system of automatic tridimensional warehouse and proposed,the the main characters and the way of communication program developing with VC6 are expounded based on industrial Ethernet communication.Use the the ARM2440 control panel, the system is divided into the automated warehouse management and control system functional modules.And the Ethernet-based communication model used between the supervisor computer and the ARM2440 is presented. The realization and utilization of the design are described. The information and software integration of the system are illuminated, too. The design has lower cost and achieves system integration of management and control of an AS/RS by common devices and technology.

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Boumous, Z., i S. Boumous. "New Approach in the Fault Tolerant Control of Three-Phase Inverter Fed Induction Motor". Engineering, Technology & Applied Science Research 10, nr 6 (20.12.2020): 6504–9. http://dx.doi.org/10.48084/etasr.3898.

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This article provides an improved fault-tolerant control scheme for inverter-powered induction motors. The proposed strategy addresses the cancellation of power switch failures (IGBTs) regardless of their location in a reconfigurable induction motor control. The proposed fault-tolerant topology requires only minimal hardware modifications of the conventional six-switch three-phase drive, mitigating IGBT failures through reconfiguration based on the substitution of an entire inverter arm. The detection mechanism is based on the tridimensional method from which a database will be used for the learning of the neural network. In this method, the current from the stator is used as input to the system, so access to the induction motor is not necessary.

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Lv, Huichao, i Yong Zheng. "A newly developed tridimensional neural network for prediction of the phase equilibria of six aqueous two-phase systems". Journal of Industrial and Engineering Chemistry 57 (styczeń 2018): 377–86. http://dx.doi.org/10.1016/j.jiec.2017.08.046.

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Nicolai, Eleonora, Velia Minicozzi, Luisa Di Paola, Rosaria Medda, Francesca Pintus, Giampiero Mei i Almerinda Di Venere. "Symmetric versus Asymmetric Features of Homologous Homodimeric Amine Oxidases: When Water and Cavities Make the Difference". Symmetry 14, nr 3 (3.03.2022): 522. http://dx.doi.org/10.3390/sym14030522.

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Symmetry is an intrinsic property of homo-oligomers. Amine oxidases are multidomain homodimeric enzymes that contain one catalytic site per subunit, and that share a high homology degree. In this paper, we investigated, by fluorescence spectroscopy measurements, the conformational dynamics and resiliency in solutions of two amine oxidases, one from lentil seedlings, and one from Euphorbia characias latex, of which the crystallographic structure is still unknown. The data demonstrate that slight but significant differences exist at the level of the local tridimensional structure, which arise from the presence of large internal cavities, which are characterized by different hydration extents. Molecular dynamics and a contact network methodology were also used to further explore, in silico, the structural features of the two proteins. The analysis demonstrates that the two proteins show similar long-range symmetrical connectivities, but that they differ in their local (intra-subunit) contact networks, which appear mostly asymmetric. These features have been interpreted to suggest a new rationale for the functioning of amino oxidases as obligate homodimers.

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Kachar, B., i T. S. Reese. "The mechanism of cytoplasmic streaming in characean algal cells: sliding of endoplasmic reticulum along actin filaments." Journal of Cell Biology 106, nr 5 (1.05.1988): 1545–52. http://dx.doi.org/10.1083/jcb.106.5.1545.

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Electron microscopy of directly frozen giant cells of characean algae shows a continuous, tridimensional network of anastomosing tubes and cisternae of rough endoplasmic reticulum which pervade the streaming region of their cytoplasm. Portions of this endoplasmic reticulum contact the parallel bundles of actin filaments at the interface with the stationary cortical cytoplasm. Mitochondria, glycosomes, and other small cytoplasmic organelles enmeshed in the endoplasmic reticulum network display Brownian motion while streaming. The binding and sliding of endoplasmic reticulum membranes along actin cables can also be directly visualized after the cytoplasm of these cells is dissociated in a buffer containing ATP. The shear forces produced at the interface with the dissociated actin cables move large aggregates of endoplasmic reticulum and other organelles. The combination of fast-freezing electron microscopy and video microscopy of living cells and dissociated cytoplasm demonstrates that the cytoplasmic streaming depends on endoplasmic reticulum membranes sliding along the stationary actin cables. Thus, the continuous network of endoplasmic reticulum provides a means of exerting motive forces on cytoplasm deep inside the cell distant from the cortical actin cables where the motive force is generated.

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Paulo, Glauco Dias, Denise Hirayama i Clodoaldo Saron. "Microwave Devulcanization of Waste Rubber with Inorganic Salts and Nitric Acid". Advanced Materials Research 418-420 (grudzień 2011): 1072–75. http://dx.doi.org/10.4028/www.scientific.net/amr.418-420.1072.

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Rubber wastes cause severe damages for the environment when unsuitably disposed in the environment and represent a challenger for mechanical recycling, because the vulcanized rubber is formed by a tridimensional network with intermolecular sulfur crosslinks. Microwave radiation can lead to the breaking of sulfur crosslinks and so enable the recycling of vulcanized rubbers. The aim of this work was to study the SBR devulcanization by microwave using inorganic salts and nitric acid. Soxhlet extraction and FTIR analyzes were carried out to evaluate the devulcanization degree and chemical modifications in the rubber structure. The results showed that the presence of carbon black in the rubber is an important factor for devulcanization and some metallic ions decrease the sulfur crosslink content. On the other hand, these ions promote the oxidation in the rubber.

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Shi, Tong, Xiaoxiao Kuai, Wenchang Zhu, Kai Tian, Hui Lu, Xue Huang, Lijun Gao i Jianqing Zhao. "In-situ high loading of SnO2 monocrystals in a tridimensional carbon network via chemical bonding for enhanced lithium storage performance". Journal of Alloys and Compounds 775 (luty 2019): 790–99. http://dx.doi.org/10.1016/j.jallcom.2018.10.205.

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CROSNIER-LOPEZ, M. P., H. DUROY i J. L. FOURQUET. "ChemInform Abstract: Ba3V2O4F8: (V4(O,F)20)8- Tetrameric Groups of Octahedra Inserted in a Tridimensional Network of (FBa4) Tetrahedra." ChemInform 24, nr 47 (20.08.2010): no. http://dx.doi.org/10.1002/chin.199347032.

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Silva, Marcelo Carlos de Oliveira, Rochele Sheila Vasconcelos i José Almir Cirilo. "Risk Mapping of Water Supply and Sanitary Sewage Systems in a City in the Brazilian Semi-Arid Region Using GIS-MCDA". Water 14, nr 20 (15.10.2022): 3251. http://dx.doi.org/10.3390/w14203251.

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It is essential to visualize water scarcity as a result of an inappropriate process of appropriation and the use of natural resources. This understanding has been gaining more and more prominence in studies in Brazil and also in the world. In this context, this research aims to map the risk of water shortages and sewage insufficiency in a Brazilian semi-arid city using GIS-MCDA. The secondary data used in this research were collected from IBGE, Compesa, and the City Hall of Caruaru and were processed using the QGIS 3.12 Bucareşti software. The Pernambuco Tridimensional database and the Analytical Hierarchy Process method were used in the process to generate the maps. After collecting and analyzing the data, it was seen that, according to the water shortage risk map, seven neighborhoods had a “Very high” risk, in which the criteria with the greatest weight were the distance from distribution reservoirs, the main supply network and altimetry. The map of the degree of sanitary sewage insufficiency showed that four neighborhoods have a “Very high” degree; these neighborhoods are far from the main sewage network and from sewage treatment stations and have the lowest rates of households served by the system. Such characteristics need to be highlighted in the planning and implementation of water and sewage services. Thus, it is concluded that the use of high-resolution spatial databases for the planning of urban services, as carried out in the present work, provides a greater level of confidence for solutions that can be implemented in the expansion of service networks to the population.

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Yin, Huichao, Bin Xu, Shangxian Yin, Wuzi Tian, Hui Yao i Haopeng Meng. "Prevention of Water Inrushes in Deep Coal Mining over the Ordovician Aquifer: A Case Study in the Wutongzhuang Coal Mine of China". Geofluids 2021 (15.09.2021): 1–13. http://dx.doi.org/10.1155/2021/5208670.

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Through field observation and theoretical study, we found that the Hanxing mining area has a typical ternary structure in coal mining under high water pressure of the aquifer. This ternary structure is the Ordovician limestone aquifer-aquiclude including thin limestones-coal seam. Although the aquiclude is considerably thick, there is still a great risk of water burst during mining under water pressure in the deep burial environment. Multidimensional characteristics of floor water inrush in deep mining are summarized in the paper, including water migration upwardly driven by the Ordovician confined water, the planar dispersion of the water inrush channel, the stepped increase of the water inrush intensity, the hysteretic effluent of the water inrush time and the exchange, and adsorption of the water quality. The water inrush mechanism is clarified that the permeability, dilatancy, fracturing, and ascending of the water from the Ordovician limestone aquifer form a planar and divergent flow through the transfer, storage, and transportation of thin limestone aquifers. The corresponding water inrush risk evaluation equation is also proposed. Based on the thickness of the aquiclude, the thickness of the failure zones, and the water inrush coefficient, the floor aquiclude is classified into five categories. While water inrush cannot be completely controlled by the traditional underground floor reinforcement with ultra-thick aquiclude or even zonal grouting, a comprehensive prevention and control concept of the four-dimensional floor water hazard in full time-space domain are proposed. A tridimensional prevention and control model of three-dimensional reticulated exploration, treatment, verification, and supplementation is presented. A full time domain technological quality control process of condition assessment, exploration, remediation, inspection, evaluation, monitoring, and reassurance is formed, and a water disaster prevention method with full time-space tridimensional network in deep coal mining is established. Case study in the Hanxing mining area demonstrates that the proposed methods are highly effective.

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Isea, Raúl. "An Algorithm to Predict the Possible SARS-CoV-2 Mutations". International Journal of Coronaviruses 3, nr 1 (17.04.2021): 1–7. http://dx.doi.org/10.14302/issn.2692-1537.ijcv-21-3804.

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An algorithm to determine the possible mutations that can occur in the S protein responsible of the Covid-19 in humans is designed. To do that, nine tridimensional sequences available in the Protein Data Bank similar to the initial strain sequenced in Wuhan (December 2019) are identified. The conditions driving this potential mutation are: (1) an accumulated number of mutations greater than (or equal to) 5 in each position; (2), a cumulative value of the different variations of Gibbs free energy less than -2.0 Kcal/mol; and (3), a squared fluctuation greater than 1.6 Å obtained according to calculations for normal mode analysis based on anisotropic network models (ANM) after averaging the first 20 vibration modes. The result is that 491 positions can mutate, while 424 positions did not provide any mutation. Finally, the results reveal that there are mutations that cannot be predicted, so more studies are needed to determine why they are present in the human population.

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Rondón Bernard, José Eduardo, i Luisa Angelucci. "Relación entre depresión y adherencia al tratamiento en diabetes tipo 2, considerando la red de apoyo social, las estrategias de afrontamiento y el sexo". Revista Costarricense de Psicología 40, nr 2 (28.12.2021): 215–42. http://dx.doi.org/10.22544/rcps.v40i02.08.

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Desde una aproximación biopsicosocial, se pretendió determinar el modelo en diabetes que presentaun mayor ajuste a los datos: aquel donde la adherencia al tratamiento predice la depresión o aquelen que la depresión es el predictor de la adherencia. Se consideraron, en ambos, el apoyo social, lasestrategias de afrontamiento y el sexo. Se utilizó un diseño transeccional-causal en 278 pacientes conun promedio de 59 años. Se empleó el Cuestionario Tridimensional de la Depresión, el Instrumentopara Medir el Estilo de Vida en Diabéticos, Cuestionario de Estrategias de Afrontamiento y la Escalade Social Network and Support. Al evaluar los modelos de ecuaciones estructurales, se obtuvieronlas mismas medidas de bondad de ajuste, con relaciones similares entre variables, por lo que ambosmodelos poseen un ajuste aceptable. Ser mujer, poseer menor estrategia de evitación, presentar mayorred de apoyo, tener menor adherencia al tratamiento, conlleva a una menor depresión. Los resultadospueden servir de base para diseñar intervenciones psicológicas para aumentar la adherencia yevitar la depresión.

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Chan, Franky L., Sadayuki Inoue i Charles Philippe Leblond. "Cryofixation of basement membranes followed by freeze substitution or freeze drying demonstrates that they are composed of a tridimensional network of irregular cords". Anatomical Record 235, nr 2 (luty 1993): 191–205. http://dx.doi.org/10.1002/ar.1092350203.

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Bossie-Codreanu, Dimitrie, Paul R. Bia i Jean-Claude Sabathier. "The "Checker Model," An Improvement in Modeling Naturally Fractured Reservoirs With a Tridimensional, Triphasic, Black-Oil Numerical Model". Society of Petroleum Engineers Journal 25, nr 05 (1.10.1985): 743–56. http://dx.doi.org/10.2118/10977-pa.

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Abstract This paper describes an approach to simulating the flow of water, oil, and gas in fully or partially fractured reservoirs with conventional black-oil models. This approach is based on the dual porosity concept and uses a conventional tridimensional, triphasic, black-oil model with minor modifications. The basic feature is an elementary volume of the fractured reservoir that is simulated by several model cells; the matrix is concentrated into one matrix cell and tee fractures into the adjacent fracture cells. Fracture cells offer a continuous path for fluid flows, while matrix cello are discontinuous ("checker board" display). The matrix-fracture flows are calculated directly by the model. Limitations and applications of this approximate approach are discussed and examples given. Introduction Fractured reservoir models were developed to simulate fluid flows in a system of continuous fractures of high permeability and low porosity that surround discontinuous, porous, oil-saturated matrix blocks of much lower permeability but higher porosity. The use of conventional models that permeability but higher porosity. The use of conventional models that actually simulate the fractures and matrix blocks is restricted to small systems composed of a limited number of matrix blocks. The common approach to simulating a full-field fractured reservoir is to consider a general flow within the fracture network and a local flow (exchange of fluids) between matrix blocks and fractures. This local flow is accounted for by the introduction of source or sink terms (transfer functions). In this formulation, the model is not directly predictive because the source term (transfer function) is, in fact, entered data and is derived from outside the model by one of the following approaches:analytical computation,empirical determination (laboratory experiments), ornumerical simulation of one or several matrix blocks on a conventional model. To derive these transfer functions, imposing some boundary conditions is necessary. Unfortunately, it is generally impossible to foresee all the conditions that will arise in a, matrix block and its surrounding fractures during its field life. It would be helpful, therefore, to have a model that is able to compute directly the local flows according to changing conditions. However, to have low computing times, it is necessary to use an approximate formulation and, thus, to adjust some parameters to match results that are externally (and more accurately) derived in a few basis, well-defined conditions. By current investigative techniques, only a very general description of the matrix blocks and fissures can be obtained, so our knowledge of local flows is very approximate. This paper presents a modeling procedure that is an approximate but helpful approach to the simulation of fractured reservoirs and requires a few, simple modifications of conventional black-oil mathematical models. Review of the Literature Numerous papers related to single- and multiphase flow in fractured porous media have been published over the last three decades. On the basis of data from fractured limestone and sand-stone reservoirs, fractured reservoirs are pictured as stacks of matrix blocks separated by fractures (Figs. 1 and 2). The fractured reservoirs with oil-saturated matrices usually are referred to as "double porosity" systems. Primary porosity is associated with matrix blocks, while secondary porosity is associated with fractures. The porosity of the matrices is generally much greater than that of the fractures, but permeability within fractures may be 100 and even over 10,000 times higher permeability within fractures may be 100 and even over 10,000 times higher than within the matrices. The main difference between flow in a fractured medium and flow in a conventional porous system is that, in a fractured medium, the interconnected fracture network provides the main path for fluid flow through the reservoir, while local flows (exchanges of fluids) occur between the discontinuous matrix blocks and the surrounding fractures. Matrix oil flows into the fractures, and the fractures carry the oil to the wellbore. For single-phase flow, Barenblatt et al constructed a formula based on the dual porosity approach. They consider the reservoir as two overlying continua, the matrices and the fractures. SPEJ p. 743

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Thanh, Do Minh, Le Xuan Hien, Nguyen Thi Thuong, Trieu Quy Hung i Lam Hung Son. "Influence of palm oil modified epoxy resin/biscycloaliphatic diepoxide weight ratio on photoinitiated cationic crosslinking and properties of UV‐cured coatings". Vietnam Journal of Chemistry 59, nr 5 (październik 2021): 552–56. http://dx.doi.org/10.1002/vjch.201900194.

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AbstractEffect of the weight proportion between epoxy resin modified by palm oil (EPO) and a biscycloaliphatic diepoxide (BCDE) on photoinitiated cationic crosslinking of the system containing EPO, BCDE, triarylsulfonium hexafluoroantimonate salts (TAS) as well as performance of formed coatings have been investigated. The change of TAS and functional groups of the system upon UV‐irradiation time was determined quantitatively by IR‐spectrometric analysis, using internal standard method. Formation of tridimensional polymer network in the coatings upon UV‐exposure was proved directly by evaluation of their gel fraction. It was demonstrated that epoxy group conversion and EPO/BCDE weight ratio relationship had optimal characteristic with the best consumptions of epoxy groups 5.94 and 6.13 mol/kg at 1.2 and 14.4 s of UV‐exposure, correspondingly, when EPO/BCDE weight ratio was 20/80. Augmentation of the EPO/BCDE ratio from 20/80 to 60/40 increased flexibility of UV‐cured coatings from 10 to 1 mm but decreased their gel fraction from 81 to 59 %; the relative hardness of the cured coatings diminished from 0.95 to 0.43 when the EPO/BCDE ratio varied from 10/80 to 40/60.

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Al_Hassani, Raghad Tariq, i Dogu Cagdas Atilla. "Human Activity Detection Using Smart Wearable Sensing Devices with Feed Forward Neural Networks and PSO". Applied Sciences 13, nr 6 (14.03.2023): 3716. http://dx.doi.org/10.3390/app13063716.

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Hospitals must continually monitor their patients’ actions to lower the chance of accidents, such as patient falls and slides. Human behavior is difficult to track due to the complexity of human activities and the unpredictable nature of their conduct. As a result, creating a static link that is used to influence human behavior is challenging, since it is hard to forecast how individuals will think or act in response to a certain event. Mobility tracking depends on intelligent monitoring systems that apply artificial intelligence (AI) applications referred to as “categories”. Because motion sensors, such as gyroscopes and accelerometers, output unconnected data that lack labels, event detection is a vital task. The fall feature parameters of tridimensional accelerometers and gyroscope sensors are presented and used, and the classification technique is based on distinguishing characteristics. This study focuses on the age-old problem of tracking turbulence in motion to improve detection precision. We trained the model, considering that detection accuracy is limited by factors such as the subject’s mass, velocity, and gait style. This is performed by employing an experimental dataset. When we used the sophisticated technique of particle swarm optimization (PSO) in combination with a four-stage forward neural network (4SFNN) to forecast four different types of turbulent motion, we observed that the total prediction accuracy was 98.615% accurate.

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Sousa, Ingrid S., Thaís P. Mello, Elaine P. Pereira, Marcela Q. Granato, Celuta S. Alviano, André L. S. Santos i Lucimar F. Kneipp. "Biofilm Formation by Chromoblastomycosis Fungi Fonsecaea pedrosoi and Phialophora verrucosa: Involvement with Antifungal Resistance". Journal of Fungi 8, nr 9 (15.09.2022): 963. http://dx.doi.org/10.3390/jof8090963.

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Patients with chromoblastomycosis (CBM) suffer chronic tissue lesions that are hard to treat. Considering that biofilm is the main growth lifestyle of several pathogens and it is involved with both virulence and resistance to antimicrobial drugs, we have investigated the ability of CBM fungi to produce this complex, organized and multicellular structure. Fonsecaea pedrosoi and Phialophora verrucosa conidial cells were able to adhere on a polystyrene abiotic substrate, differentiate into hyphae and produce a robust viable biomass containing extracellular matrix. Confocal laser scanning microscopy (CLSM) and scanning electron microscopy (SEM) showed the tridimensional architecture of the mature biofilms, revealing a dense network of interconnected hyphae, inner channels and amorphous extracellular polymeric material. Interestingly, the co-culture of each fungus with THP-1 macrophage cells, used as a biotic substrate, induced the formation of a mycelial trap covering and damaging the macrophages. In addition, the biofilm-forming cells of F. pedrosoi and P. verrucosa were more resistant to the conventional antifungal drugs than the planktonic-growing conidial cells. The efflux pump activities of P. verrucosa and F. pedrosoi biofilms were significantly higher than those measured in conidia. Taken together, the data pointed out the biofilm formation by CBM fungi and brought up a discussion of the relevance of studies about their antifungal resistance mechanisms.

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Castro, Rubén H., Laura M. Corredor, Sebastián Llanos, Zully P. Rodríguez, Isidro Burgos, Jhorman A. Niño, Eduardo A. Idrobo i in. "Evaluation of the Thermal, Chemical, Mechanical, and Microbial Stability of New Nanohybrids Based on Carboxymethyl-Scleroglucan and Silica Nanoparticles for EOR Applications". Nanomaterials 14, nr 8 (13.04.2024): 676. http://dx.doi.org/10.3390/nano14080676.

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Scleroglucan (SG) is resistant to harsh reservoir conditions such as high temperature, high shear stresses, and the presence of chemical substances. However, it is susceptible to biological degradation because bacteria use SG as a source of energy and carbon. All degradation effects lead to viscosity loss of the SG solutions, affecting their performance as an enhanced oil recovery (EOR) polymer. Recent studies have shown that nanoparticles (NPs) can mitigate these degradative effects. For this reason, the EOR performance of two new nanohybrids (NH-A and NH-B) based on carboxymethyl-scleroglucan and amino-functionalized silica nanoparticles was studied. The susceptibility of these products to chemical, mechanical, and thermal degradation was evaluated following standard procedures (API RP 63), and the microbial degradation was assessed under reservoir-relevant conditions (1311 ppm and 100 °C) using a bottle test system. The results showed that the chemical reactions for the nanohybrids obtained modified the SG triple helix configuration, impacting its viscosifying power. However, the nanohybrid solutions retained their viscosity during thermal, mechanical, and chemical degradation experiments due to the formation of a tridimensional network between the nanoparticles (NPs) and the SG. Also, NH-A and NH-B solutions exhibited bacterial control because of steric hindrances caused by nanoparticle modifications to SG. This prevents extracellular glucanases from recognizing the site of catalysis, limiting free glucose availability and generating cell death due to substrate depletion. This study provides insights into the performance of these nanohybrids and promotes their application in reservoirs with harsh conditions.

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Pereira, D. J. F., i A. S. Câmara. "Tridimensional Optimization of Sewerage and Stormwater Networks". IFAC Proceedings Volumes 21, nr 17 (październik 1988): 97–102. http://dx.doi.org/10.1016/s1474-6670(17)54561-9.

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Stojanovic, Zeljko, Katarina Jeremic i Slobodan Jovanovic. "Influence of starch origin on rheological properties of concentrated aqueous solutions". Chemical Industry 65, nr 6 (2011): 645–55. http://dx.doi.org/10.2298/hemind110912075s.

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The rheological properties of corn and potato starch concentrated aqueous solutions were investigated at 25?C. The starches were previously dispersed in water and the solutions were obtained by heating of dispersions at 115-120?C for 20 minutes. The solutions of potato starch were transparent, while the corn starch solutions were opalescent. The results of dynamic mechanical measurements showed that the values of viscosity, h, storage modulus, G?, and loss modulus, G?, of the corn starch solutions increased with the storage time. This phenomenon was not observed for the potato starch solutions. It was assumed that the increase of h, G? and G? is the result of starch solutions retrogradation. The potato starch solutions retrogradation did not occur probably because of the phosphates presence. The viscosity of 2 mass % corn starch solution is less than the viscosity of 2 mass % potato starch solution. By increasing the concentration of corn starch solution the gel with elastic behavior was formed. The corn starch solutions formed gel as early as at 4 mass % concentration, while potato starch solutions achieved the gel state at the concentration of 5 mass %. The value of exponent m (G? and G? ? wm) during the transition of potato starch solutions to gel is 0.414, which gives the fractal dimensions for corn starch of 2.10. The obtained value of fractal dimension corresponds to slow aggregation. The corn starch solutions with the starch concentrations higher than 4 mass % form weak gels. For these solutions the values of modulus in rubber plateau were determined. It was found that the modulus in rubber plateau increased with the concentration by the exponent of 4.36. Such high exponent value was obtained in the case when the tridimensional network is formed, i.e. when supermolecular structures like associates or crystal domains are formed.

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Tóta, Julio, David Roy Fitzjarrald i Maria A. F. da Silva Dias. "Amazon Rainforest Exchange of Carbon and Subcanopy Air Flow: Manaus LBA Site—A Complex Terrain Condition". Scientific World Journal 2012 (2012): 1–19. http://dx.doi.org/10.1100/2012/165067.

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On the moderately complex terrain covered by dense tropical Amazon Rainforest (Reserva Biologica do Cuieiras—ZF2—02°36′17.1′′ S,60°12′24.4′′ W), subcanopy horizontal and vertical gradients of the air temperature, CO2concentration and wind field were measured for the dry and wet periods in 2006. We tested the hypothesis that horizontal drainage flow over this study area is significant and can affect the interpretation of the high carbon uptake rates reported by previous works at this site. A similar experimental design as the one byTóta et al.(2008) was used with a network of wind, air temperature, and CO2sensors above and below the forest canopy. A persistent and systematic subcanopy nighttime upslope (positive buoyancy) and daytime downslope (negative buoyancy) flow pattern on a moderately inclined slope (12%) was observed. The microcirculations observed above the canopy (38 m) over the sloping area during nighttime presents a downward motion indicating vertical convergence and correspondent horizontal divergence toward the valley area. During the daytime an inverse pattern was observed. The micro-circulations above the canopy were driven mainly by buoyancy balancing the pressure gradient forces. In the subcanopy space the microcirculations were also driven by the same physical mechanisms but probably with the stress forcing contribution. The results also indicated that the horizontal and vertical scalar gradients (e.g., CO2) were modulated by these micro-circulations above and below the canopy, suggesting that estimates of advection using previous experimental approaches are not appropriate due to the tridimensional nature of the vertical and horizontal transport locally. This work also indicates that carbon budget from tower-based measurement is not enough to close the system, and one needs to include horizontal and vertical advection transport of CO2into those estimates.

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Cabort, Amel, Bruno Therrien, Klaus Bernauer i Georg Süss-Fink. "Copper(II) azido complexes containing trinitrogen ligands: [Cu(η3-L)(N3)]2[Cu2Cl2(N3)4] [L=2,6-bis(3,4-dihydro-2H-pyrrol-5-yl)pyridine], a tridimensional network of cationic and anionic copper complexes". Inorganica Chimica Acta 349 (czerwiec 2003): 78–84. http://dx.doi.org/10.1016/s0020-1693(03)00055-0.

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Castillo, Luciana, Leticia Lescano, Silvina Marfil i Silvia Barbosa. "Sepiolite nanofibers structure. From tridimensional networks to bidimensional layers". Applied Clay Science 228 (październik 2022): 106595. http://dx.doi.org/10.1016/j.clay.2022.106595.

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Camacho, A. G. "TRIDIMENSIONAL ADJUSTMENT WITH INNER CONSTRAINTS IN SMALL CONTROL NETWORKS". Survey Review 29, nr 230 (październik 1988): 371–82. http://dx.doi.org/10.1179/sre.1988.29.230.371.

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de Souza, Jucimar M., Gilberto F. de Sá, Walter M. de Azevedo, Severino Alves i Robson F. de Farias. "Spectroscopic study of Eu and Tb complexes on polysiloxane tridimensional networks". Optical Materials 27, nr 6 (marzec 2005): 1187–89. http://dx.doi.org/10.1016/j.optmat.2004.08.080.

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Silveira, Maira dos Santos, Geovane Bernardi, Ariadne de Freitas Leonardi, Sabrina Antunes Ferreira i Andréa Inês Goldschmidt. "SEQUÊNCIA DIDÁTICA SOBRE MICRORGANISMOS DA ÁGUA PARA O ENSINO DE CIÊNCIAS NOS ANOS INICIAIS DO ENSINO FUNDAMENTAL". Revista Prática Docente 3, nr 2 (26.12.2018): 557–74. http://dx.doi.org/10.23926/rpd.2526-2149.2018.v3.n2.p557-574.id242.

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Resumo: A pesquisa objetivou construir e validar uma Sequência Didática (SD) sobre microrganismos da água, tendo sido desenvolvida com um grupo de oitenta e nove alunos dos anos iniciais do Ensino Fundamental, de uma escola pública da rede estadual do Rio Grande do Sul, localizada em Palmeira das Missões. Foram realizadas diferentes atividades, como: modelagem de microrganismos com massinha de modelar; observação de amostras de água ao microscópio; e, uma atividade lúdica com as gotinhas de água Gotilde e Pingote. Para a avaliação foi realizado a construção de um texto pelos alunos, seguida da análise de conteúdo. Os resultados evidenciaram boa aceitação da SD, tendo sido citadas todas as atividades realizadas, com percentuais mais elevados para a observação ao microscópio e para a confecção de modelo tridimensional com massa de modelar. O uso das estratégias contribuiu para melhor aprendizagem dos alunos, auxiliando no reconhecimento de que os microrganismos podem estar em todos os ambientes, que existem diferentes formas e tamanhos; e que estes seres microscópicos não são somente maléficos. Desta forma, as estratégias de ensino se mostraram pertinentes, representando uma alternativa potencialmente significativa na aprendizagem sobre microrganismos nos anos iniciais.Palavras-chave: Primeiros anos. Aulas práticas. Aprendizagem. Abstract: The research aimed to construct and validate a Didactic Sequence on water microorganisms. It was developed with a group of eighty - nine students from the initial years of Elementary School, from a public school of the state network of Rio Grande do Sul, located in city Palmeira das Missões. Different activities were carried out, such as: modeling of microorganisms with modeling clay; observation of water samples under a microscope; and, a playful activity with the droplets of water Gotilde and Pingote. For the evaluation was made the construction of a text by the students, followed by content analysis. The results showed a good acceptance of DS, and all the activities performed were mentioned, with higher percentages for observation under the microscope and for the making of a three-dimensional model with modeling mass. The use of the strategies contributed to the better learning of the students, aiding in the recognition that the microorganisms can be in all the environments, that there are different forms and sizes; and that these microscopic beings are not only maleficent. In this way, teaching strategies were relevant, representing a potentially significant alternative in learning about microorganisms in the early years.Keywords: First years. Practical classes. Learning.

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PAOLUCCI, P. S. "N-BODY CLASSICAL SYSTEMS AND NEURAL NETWORKS ON A 3D SIMD MASSIVE PARALLEL PROCESSOR: APE100/QUADRICS". International Journal of Modern Physics C 06, nr 02 (kwiecień 1995): 169–82. http://dx.doi.org/10.1142/s0129183195000137.

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A number of physical systems (e.g., N body Newtonian, Coulombian or Lennard-Jones systems) can be described by N2 interaction terms. Completely connected neural networks are characterised by the same kind of connections: Each neuron sends signals to all the other neurons via synapses. The APE100/Quadricsmassive parallel architecture, with processing power in excess of 100 Gigaflops and a central memory of 8 Gigabytes seems to have processing power and memory adequate to simulate systems formed by more than 1 billion synapses or interaction terms. On the other hand the processing nodes of APE100/Quadrics are organised in a tridimensional cubic lattice; each processing node has a direct communication path only toward the first neighboring nodes. Here we describe a convenient way to map systems with global connectivity onto the first-neighbors connectivity of the APE100/Quadrics architecture. Some numeric criteria, which are useful for matching SIMD tridimensional architectures with globally connected simulations, are introduced.

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Estepa, A., M. L. Diago, P. López-Fierro, A. Villena i J. M. Coll. "Tridimensional networks of haematopoletic stromal cells from trout kidney formed in fibrin clots". Fish & Shellfish Immunology 4, nr 7 (listopad 1994): 547–50. http://dx.doi.org/10.1006/fsim.1994.1049.

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Ren, Weilong, Haichao Wei i Wuyang Zhou. "A Simple yet Effective Approach for Interference Mitigation in Tridimensional Two-Tier Femtocell Networks". Wireless Personal Communications 97, nr 1 (16.06.2017): 1597–621. http://dx.doi.org/10.1007/s11277-017-4588-2.

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Ayata, Raif Eren, Stéphane Chabaud, Michèle Auger i Roxane Pouliot. "Behaviour of Endothelial Cells in a TridimensionalIn VitroEnvironment". BioMed Research International 2015 (2015): 1–9. http://dx.doi.org/10.1155/2015/630461.

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Angiogenesis is a fundamental process in healing, tumor growth, and a variety of medical conditions. For this reason,in vitroangiogenesis is an area of interest for researchers. Additionally,in vitroangiogenesis is important for the survival of prevascularized tissue-engineering models. The aim of this study was to observe the self-tubular organization behaviour of endothelial cells in the self-assembly method. In this study, bilayered and dermal substitutes were prepared using the self-assembly method. Histological, immunostaining, and biochemical tests were performed. The behavioural dynamics of endothelial cells in this biological environment of supportive cells were observed, as were the steps of thein vitroangiogenic cascade with self-organizing capillary-like structures formation. The epidermal component of the substitutes was seen to promote network expansion and density. It also increased the quantity of angiogenic factors (VEGF and Ang-1) without increasing the proinflammatory factor (IL-8). In addition, the increased MMP activity contributed to matrix degradation, which facilitated capillary formation.

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Soares, Gabriel Antonio Silva, i Josiclêda Domiciano Galvíncio. "Uso do LiDAR para avaliar os padrões hídricos de bacias em áreas urbanas: Caracterização fisiográfica da bacia do Rio Beberibe, PE". Revista Brasileira de Geografia Física 13, nr 07 (31.12.2020): 3659. http://dx.doi.org/10.26848/rbgf.v13.07.p3659-3674.

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A caracterização fisiográfica, consiste no levantamento dos principais parâmetros fisiográficos de uma bacia, que podem ser extraídos de mapas, fotografias aéreas e imagens de satélite, e se apresenta como uma ferramenta útil ao planejamento e gestão dos recursos hídricos, por existir uma forte correspondência entre as características físicas de uma bacia hidrográfica e seu regime hidrológico. O presente estudo se propõe a caracterizar fisiograficamente a bacia hidrográfica do Rio Beberibe utilizando os dados do sensor LiDAR com resolução espacial de 5 m em uma escala de 1:5000, provenientes do programa PE3D (Pernambuco Tridimensional). Os resultados obtidos sobre os parâmetros geométricos, levaram à conclusão de que a bacia hidrográfica do Rio Beberibe não é naturalmente propensa à ocorrência de enchentes, por possuir uma forma alongada. Sobre os padrões de drenagem, foi possível concluir que a bacia possui uma drenagem rica e escoamento superficial fluido e ágil, que seus canais possuem perfis retilíneos, e que se trata de uma bacia de 6ª ordem. Acerca das características do relevo, foi constatado que a bacia não possui picos de altitudes elevados, porém uma considerável amplitude altimétrica, além de que na declividade da bacia não estão apresentadas inclinações bruscas. Using LiDAR to evaluate water patterns in urban areas basin: Physiographic characterization of the Rio Beberibe basin, PE A B S T R A C TThe physiographic characterization consists in the survey of the main physiographic parameters of a basin, which can be extracted from maps, aerial photographs and satellite images, and presents itself as a useful tool for planning and management of water resources, as a consequence of the influence between the physical characteristics of a river basin and its hydrological behaviour. The selection of the Beberibe river basin for the development of this research was made due to their importance for the macrodrainage of the state of Pernambuco, and because they are located in an area of strong urban activity. Thus, these areas present strong socioeconomic activity, which configures them as spaces where water planning is crucial for the conscious use of their resources. Faced with this scenario, the present study proposes to physiographically characterize the Beberibe river basin using LiDAR sensor data with a spatial resolution of 5 m on a scale of 1:5000, from the PE3D program (Three-Dimensional Pernambuco). The main morphometric parameters obtained for the Beberibe River basin were grouped into three groups of characteristics. The geometric characteristics, which consist of the following parameters: drainage area (A), basin perimeter (P), axial length (L), compacity coefficient (Kc), shape factor (Kf), and circularity index (IC). The characteristics of the drainage network, which consists in the survey of the following parameters: length of the main river (Lc), total length of the channels (Lt), basin order, drainage density (Dd), hydrographic density (Dh), sinuosity index (Is), and average runoff length (

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Grijalvo, Santiago, Ramon Eritja i David Díaz Díaz. "On the Race for More Stretchable and Tough Hydrogels". Gels 5, nr 2 (28.04.2019): 24. http://dx.doi.org/10.3390/gels5020024.

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Hydrogels are tridimensional networks that are able to retain important amounts of water. These soft materials can be obtained through self-assembling processes involving either hydrophilic molecules or polymers, allowing the formation of the corresponding covalently and physically cross-linked networks. Although the applicability of hydrogels in biomedicine has been exponentially growing due to their biocompatibility and different responses to stimuli, these materials have exhibited the particular feature of poor mechanical strength, and consequently, are brittle materials with low deformation. Due to this reason, a race has started to obtain more stretchable and tough hydrogels through different approaches. Within this context, this review article describes the most representative strategies and examples involving synthetic polymers with potential for biomedical applications.

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FERNANDEZ-HERRERO, JORGE, i Gonzalo Lorenzo-Lledo. "Dibujo virtual como intervención previa educativa en el trastorno del espectro autista: un estudio de caso". Aloma: Revista de Psicologia, Ciències de l'Educació i de l'Esport 39, nr 1 (14.05.2021): 49–56. http://dx.doi.org/10.51698/aloma.2021.39.1.49-56.

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Abstract. En este trabajo analizamos, mediante un estudio de caso, las posibilidades que ofrece el uso del dibujo virtual inmersivo en niños con trastorno del espectro autista (TEA) como herramienta de ayuda previa a la ejecución de tareas educativas para controlar los comportamientos repetitivos y disruptivos durante las mismas. Realizamos una intervención con un niño de cuatro años con TEA y comparamos los resultados obtenidos en un contexto sin intervención previa con otros en los que, como preludio a las tareas de aprendizaje programadas, se realiza, en un caso, dibujo convencional y, en otro, dibujo tridimensional mediante realidad virtual inmersiva. Aplicamos un diseño de inversión simple y un método testado para cuantificar los efectos de las intervenciones. El experimento añade elementos novedosos y resultados interesantes a la literatura previa, que sugieren que el uso del dibujo tridimensional virtual puede ser una herramienta más efectiva en la intervención previa que las tareas artísticas convencionales para controlar el comportamiento repetitivo y disruptivo de los niños con TEA y ayudar a su concentración y atención. Palabras clave: autismo; comportamiento disruptivo; intervención previa; realidad virtual; educación

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