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Articles de revues sur le sujet « Stratum Model »

Auteur : Grafiati

Publié le 2 juin 2025

Mis à jour le 31 juillet 2025

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1

Kaczmarek, Sylwester, Magdalena Kosek, and Maciej Sac. "Traffic Model of IMS/NGN Architecture with Transport Stratum Based on MPLS Technology." International Journal of Electronics and Telecommunications 59, no. 2 (2013): 113–23. http://dx.doi.org/10.2478/eletel-2013-0014.

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Abstract Growing expectations for a fast access to information create strong demands for a universal telecommunication network architecture, which provides various services with strictly determined quality. Currently it is assumed that these requirements will be satisfied by Next Generation Network (NGN), which consists of two stratums and includes IP Multimedia Subsystem (IMS) elements. To guarantee Quality of Service (QoS) all NGN stratums have to be correctly designed and dimensioned. For this reason appropriate traffic models must be developed and applied, which should be efficient and sim

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Wu, Wei, Jingbo Guo, Jie Li, Ji Sun, Haoran Qi, and Ximing Chen. "Research on Stratum Identification Method Based on TBM Tunneling Characteristic Parameters." Complexity 2022 (October 29, 2022): 1–12. http://dx.doi.org/10.1155/2022/8540985.

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In order to obtain continuous stratum information during TBM tunneling, using TBM tunneling parameters, stratum recognition is carried out through the K-nearest neighbor model, and the model is improved by the entropy weight method to improve the stratum recognition rate. By analyzing the correlation between TBM tunneling characteristic parameters and stratum, the tunneling characteristic parameter vector which is most sensitive to the stratum is obtained by sensitivity analysis, and the stratum recognition model based on the K-nearest neighbor algorithm is established. Aiming at the problem t

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McCredie, Hugh. "Towards a consensus model of IQ: John L. Horn and John B. Carroll." Assessment and Development Matters 11, no. 3 (2019): 31–36. http://dx.doi.org/10.53841/bpsadm.2019.11.3.31.

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Key digested messageThis article tracks the emergence of a consensus, three level (or ‘stratum’) hierarchical, model of cognitive ability consisting of narrow abilities (Level 1/Stratum I), broad abilities (Level 2/Stratum II) and a single general ability (Level 3/Stratum III).

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Zhong, Yusen, Zhen Liu, and Cuiying Zhou. "Free roaming of 3D stratum models based on internal and external boundary identification." PLOS ONE 19, no. 5 (2024): e0300805. http://dx.doi.org/10.1371/journal.pone.0300805.

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3D stratum roaming can visualize the complex geomorphology, underground structure and stratum distribution of geotechnical engineering. Conventional 3D stratum roaming technology is generally aimed at roaming outside the 3D stratum model but rarely roams inside the 3D stratum model, and the efficiency of switching between external and internal roaming is low. In practical engineering, especially in geological and geotechnical engineering, the underground structure and stratum situation are critical. Therefore, focusing on this problem, this paper adopts a three-dimensional roaming engine to co

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Li, Chun Yi, Jie Chen, and Hai Feng Wu. "Field Measurement Research on Overburden Stratum Movement and Deformation." Applied Mechanics and Materials 170-173 (May 2012): 1151–57. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.1151.

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According to field measurement datum in disturbed overburden stratum of five drillings, disturbed overburden stratum movement characteristics were analyzed. Negative exponent function model of measurement points movement law was also constructed. Moreover, variation law of stratum subsidence speed and relation between overburden stratum subsidence factor and surface subsidence factor were deeply researched. The results show that starting-distance of panel is nearly 70m, bedrock and alluvium subside synchronically and key-stratum isn’t exist in overburden stratum. Also, displacement curve of me

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Liu, Chun Yuan, Shi Meng Gu, and Yu Liu. "Construction of 3D Strata Model Based on the Multiple Source Data." Advanced Materials Research 671-674 (March 2013): 27–30. http://dx.doi.org/10.4028/www.scientific.net/amr.671-674.27.

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According to the raw multi-source data, all strata should be standardized. With the aid of the cubic spline interpolation function, the virtual drilling could be created. With the help of Deluanay triangulation, every stratum is turned to triangular net, namely initial stratum surface. A top triangle of stratum is connected with a corresponding bottom triangle of stratum in the net. It makes a triangular prism unit. Finally, according to certain rules, numerous triangular prism units are assembled orderly to form a geologic body. The GTP model can realize 3D strata simulation and the purpose o

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Liu, Jia, Wei Bo Li, Yao Hua Chen, and Lin Dong. "A Cutting Algorithm Based on the Tin Stratigraphic Model." Applied Mechanics and Materials 235 (November 2012): 58–62. http://dx.doi.org/10.4028/www.scientific.net/amm.235.58.

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This paper researched the cutting algorithm on the basis of the stratigraphic Tin model. Different from the traditional grid cutting method which was a single plane cut, the paper designed a polygon prisms cutting method for simulating geological boundary and mining boundary by the interactive analysis of the stratum model. This method improved on partitioning the triangle nets and reconstructing the stratum, which was able to realize cutting stratigraphic with the arbitrary polygonal prisms. Finally, the test result showed the cut graphics by the method of polygon prisms cutting stratum model

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Friberg, Stig E., Hamdan Suhaimi, Lisa B. Goldsmith, and Linda L. Rhein. "STRATUM CORNEUM LIPIDS IN A MODEL STRUCTURE." Journal of Dispersion Science and Technology 9, no. 4 (1988): 371–89. http://dx.doi.org/10.1080/01932698808943996.

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Malnati, Claudio, Daniel Fehr, Fabrizio Spano, and Mathias Bonmarin. "Modeling Stratum Corneum Swelling for the Optimization of Electrode-Based Skin Hydration Sensors." Sensors 21, no. 12 (2021): 3986. http://dx.doi.org/10.3390/s21123986.

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We present a novel computational model of the human skin designed to investigate dielectric spectroscopy electrodes for stratum corneum hydration monitoring. The multilayer skin model allows for the swelling of the stratum corneum, as well as the variations of the dielectric properties under several hydration levels. According to the results, the stratum corneum thickness variations should not be neglected. For high hydration levels, swelling reduces the skin capacitance in comparison to a fixed stratum corneum thickness model. In addition, different fringing-field electrodes are evaluated in

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Liang, Haibo, Xin Jiang, Yi Yang, and Jialing Zou. "Intelligent Identification Technology of Stratum Sub-Layer Based on Multi-Parameter Integration of Logging While Drilling." Academic Journal of Science and Technology 8, no. 3 (2023): 118–27. http://dx.doi.org/10.54097/qth2g378.

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Stratum identification is the division of the stratum lithology of one region, which is an important part of petroleum geology research. How to effectively improve the accuracy and efficiency of stratum recognition is an important issue in oil exploration and development. During the traditional oil and gas drilling process, the logging data is commonly used as the main basis to conduct artificial stratum division. The challenges encountered are high labor intensity and excessive dependence on artificial experience for identification accuracy. By comprehensively considering the synergy of multi

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ALQAHTANI, MUFLEH. "On the Phonological Derivation of Compensatory Lengthening in Standard Malay: A Stratal Optimality Theoretical Approach." International Journal of Language and Literary Studies 4, no. 1 (2022): 96–112. http://dx.doi.org/10.36892/ijlls.v4i1.804.

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This study used Stratal Optimality Theory (OT) as the analytical framework to analyze the phonological derivation of Compensatory Lengthening (CL) in Standard Malay that targets the moraic rhotic /r/ in the coda position. It was concluded that to ensure the moraicity assignment to the rhotic /r/ in the postvocalic position before any consonant deletion or vowel lengthening, the moraic structures were built based on Weight-By-Position (WBP) prior to the segmental changes that resulted in the CL, which meant that the floating mora became affiliated to the preceding stem vowel. This phonological

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Peng, Yali, Pingsong Zhang, Shi’ang Xu, and Jiankun Xue. "Study on The Model Experiment of Mine Water Depth Reinjection Monitoring Using Optical Fiber." Journal of Physics: Conference Series 3005, no. 1 (2025): 012001. https://doi.org/10.1088/1742-6596/3005/1/012001.

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Abstract Deep reinjection of mine water is one of the effective strategies for the comprehensive utilization of mine water resources. However, there are relatively few studies on the impact of deep reinjection of mine water on the stratum disturbance. Consequently, the deformation and stability of the overlying rock and soil mass in the storage space are of crucial importance. Based on the OFDR technology, this paper constructed two groups of optical fiber measurement lines (C1 and C2) in the stratum at different heights above the injection layer and carried out physical similar model tests on

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Graham, C., and N. L. Simmons. "Functional organization of the bovine rumen epithelium." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 288, no. 1 (2005): R173—R181. http://dx.doi.org/10.1152/ajpregu.00425.2004.

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The functional organization of the bovine rumen epithelium has been examined by electron and light microscopy combined with immunocytochemistry to define a transport model for this epithelium. Expression of connexin 43, an integral component of gap junctions, the tight-junction molecules claudin-1 and zonula occludens 1 (ZO-1), and the catalytic α-subunit of Na+-K+-ATPase was demonstrated by SDS-PAGE and Western blotting. From the lumen surface, four cell layers can be distinguished: the stratum corneum, the stratum granulosum, the stratum spinosum, and the stratum basale. Both claudin-1 and Z

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Shahin, S. H., and J. T. Blankemeyer. "Demonstration of gap junctions in frog skin epithelium." American Journal of Physiology-Cell Physiology 257, no. 4 (1989): C658—C664. http://dx.doi.org/10.1152/ajpcell.1989.257.4.c658.

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The morphology and distribution of the intercellular junctions were investigated in isolated skin of Rana pipiens using various electron-microscopic techniques. Our evidence demonstrates the presence of gap junctions and suggests that the distribution of gap junctions is not homogeneous among the epithelial strata. Gap junctions were less frequent in the stratum corneum and stratum granulosum than in the stratum spinosum and stratum germinativum. These results support a model of widespread intercellular coupling, although the lower number of gap junctions in the stratum granulosum suggests a p

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Liu, Shao Hua, Xin Hai Wang, and Hai Qin Ji. "Study on the Reconstruction of Three-Dimensional Bed Model and Visualization." Advanced Materials Research 542-543 (June 2012): 1320–23. http://dx.doi.org/10.4028/www.scientific.net/amr.542-543.1320.

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Reconstruction and visualization of three-dimension bed have important meaning to geology explaining and information Obtaining. This paper realizes three-dimension of the stratum model, based on TIN multilevel DEM method, with the aid of OpenGL, it realizes three-dimension visualization of stratum model, and carries on operations of illumination, roams and cuts etc.

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Zhang, Yanan, Cheng Ping Zhang, Qian Qian Li, Zheng Li, and Yi Cai. "Influence of Cavity above Tunnel on Stratum Deformation and Failure in Urban Tunnelling." Applied Mechanics and Materials 170-173 (May 2012): 1810–15. http://dx.doi.org/10.4028/www.scientific.net/amm.170-173.1810.

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In order to study the influence of cavity above the tunnel on stratum deformation and failure in urban tunnelling, the model test method was adopted based on the parameters of the stratum and tunnel section size in Beijing subway. The stratum responses were obtained under the conditions without ground cavity and with ground cavity above the tunnel. The responses include the stratum stress distribution, stratum settlement law and stratum failure process. It was concluded that the existence of ground cavity above the tunnel worsened the stratum condition and accelerated the progress of stratum d

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Martemyanov, Sergey M., and Alexei L. Maslov. "Two-Temperature Two-Dimensional Model of Underground Shale Heating by Electromagnetic Field." Advanced Materials Research 1040 (September 2014): 620–24. http://dx.doi.org/10.4028/www.scientific.net/amr.1040.620.

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A two-dimensional two-temperature model of shale stratum heating by high-frequency electromagnetic field is proposed. The heat exchange between solid rock and gas contained in pores is shown to significantly affect temperature field characteristics. The stratum gas filtration and reaction heat effects are taken into account as a first approximation.

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Birgersson, U., E. Birgersson, and S. Ollmar. "Estimating electrical properties and the thickness of skin with electrical impedance spectroscopy: Mathematical analysis and measurements." Journal of Electrical Bioimpedance 3, no. 1 (2019): 51–60. http://dx.doi.org/10.5617/jeb.400.

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Abstract Electrical impedance spectroscopy (EIS) allows for the study and characterization of tissue alterations and properties associated with the skin. Here, the potential application of EIS to estimate the thickness of the stratum corneum is explored in the form of a mathematical model for EIS, which is analyzed in the limit of 1 kHz and closed-form analytical solutions derived. These analytical expressions are verified with the numerical solution of the full set of equations and validated with an EIS study comprising 120 subjects: overall, good agreement is found in the frequency range 1-1

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Becker, S. M., and A. V. Kuznetsov. "Local Temperature Rises Influence In Vivo Electroporation Pore Development: A Numerical Stratum Corneum Lipid Phase Transition Model." Journal of Biomechanical Engineering 129, no. 5 (2007): 712–21. http://dx.doi.org/10.1115/1.2768380.

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Electroporation is an approach used to enhance transdermal transport of large molecules in which the skin is exposed to a series of electric pulses. Electroporation temporarily destabilizes the structure of the outer skin layer, the stratum corneum, by creating microscopic pores through which agents, ordinarily unable to pass into the skin, are able to pass through this outer barrier. Long duration electroporation pulses can cause localized temperature rises, which result in thermotropic phase transitions within the lipid bilayer matrix of the stratum corneum. This paper focuses on electropora

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Deng, Kongshu, Bangliang Meng, and Cong Xiang. "Adaptability to stratum characteristics for layout of thrust system in tunneling machines based on variation coefficient." Advances in Mechanical Engineering 8, no. 12 (2016): 168781401668243. http://dx.doi.org/10.1177/1687814016682434.

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This study aims to investigate the characteristics of adaptability to stratum for thrust system in tunneling machines in composite stratum. Initially, variation coefficient thrust model has been constructed on the basis of a mechanical model. By analyzing the variation coefficient thrust model, the variation coefficient surface can be discovered. Second, by analyzing the relationship between spaces of variation coefficient surface and adaptability to compound ground, the variation coefficient surface family which indicates the adaptive ability to stratum conditions for pushing system has been

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Li, Boyan, Zaobao Liu, Wen Chen, Ziang Li, Xilei Ma, and Jing Zhang. "Weighted-Combined Model for Reclaimed Foundation Settlement Prediction in Coastal Sludge-Bearing Composite Stratum." Advances in Civil Engineering 2023 (December 11, 2023): 1–12. http://dx.doi.org/10.1155/2023/9561818.

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Foundation settlement prediction is significant to the reuse and management of the reclaimed land from the sea by dykes where composite stratum of many strata with different physical and mechanical properties is encountered. Toward the foundation settlement analysis of reclaimed land in the Yellow Sea composite stratum in eastern China, a weighted-combination model is proposed in this paper combining the hyperbolic model, exponential curve model, and Asaoka model. First, the weight coefficient of the weighted-combination model is calculated by the reciprocal square method of average absolute e

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Wang, Eric, and Jeffery Klauda. "Molecular Dynamics Simulations of Stratum Corneum Model Membranes." Biophysical Journal 114, no. 3 (2018): 269a. http://dx.doi.org/10.1016/j.bpj.2017.11.1554.

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Ti, Zhengyi, Jiazhen Li, Meng Wang, et al. "Fracture Characteristics and Zoning Model of Overburden during Longwall Mining." Shock and Vibration 2021 (September 1, 2021): 1–12. http://dx.doi.org/10.1155/2021/2857750.

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The fracture characteristics and zoning model of overburden during longwall mining are the basis of coal mine disaster prevention. However, the existing theoretical model is inconsistent with the field measurement. In order to further research into the strata’s fracture characteristics and optimize the overburden’s zoning model, we used the elasticity and Winkler foundation theory to establish first fracture and periodic fracture mechanics models of clamped boundary supported by an elastic foundation with a key stratum as the research object. We analyzed the stress distribution characteristics

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Ma, Chao, Xiaoqian Guo, Lianying Zhang, Aihong Lu, Xianbiao Mao, and Bing Li. "Theoretical Analysis on Stress and Deformation of Overburden Key Stratum in Solid Filling Coal Mining Based on the Multilayer Winkler Foundation Beam Model." Geofluids 2021 (February 26, 2021): 1–15. http://dx.doi.org/10.1155/2021/6693888.

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Solid backfill coal mining (SBCM) is a green mining technology which can effectively alleviate the environmental problems induced by traditional coal mining techniques, such as surface subsidence, water resources loss, coal gangue occupation, and pollution. In this study, a multilayer Winkler foundation beam model for the overburden key strata is proposed, and the model with two key strata is solved. The subsidence, rotating angle, inner force, and stress of the overburden key strata are systematically analyzed under various backfill elastic modulus, mining height, and soft layer thickness. Th

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Mangan, P. S., D. A. Rempe, and E. W. Lothman. "Changes in inhibitory neurotransmission in the CA1 region and dentate gyrus in a chronic model of temporal lobe epilepsy." Journal of Neurophysiology 74, no. 2 (1995): 829–40. http://dx.doi.org/10.1152/jn.1995.74.2.829.

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1. In this report we compare changes in inhibitory neurotransmission within the CA1 region and the dentate gyrus (DG) in a model of chronic temporal lobe epilepsy (TLE). Extracellular and intracellular recordings were obtained in combined hippocampal-parahippocampal slices > or = 1 mo after a period of self-sustaining limbic status epilepticus (SSLSE) induced by continuous hippocampal stimulation. 2. Polysynaptic inhibitory postsynaptic potentials (IPSPs) were induced by positioning electrodes to activate specific afferent pathways and evoking responses in the absence of glutamate receptor

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Zhang, Chun Lei, and Guo Sheng Zhong. "Application of Cusp Catastrophe Model to Predicting of Water Inrush from Mine Floor." Advanced Materials Research 446-449 (January 2012): 1546–50. http://dx.doi.org/10.4028/www.scientific.net/amr.446-449.1546.

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Based on cusp catastrophe characteristics of water inrush from floor, a cusp catastrophic mechanical model of a key stratum of floor is established by catastrophe theory. By the model, the paper analyzes mechanical mechanism of water inrush from key stratum of floor with the cusp catastrophic theory. Using an engineering example, the numerical simulation proves that this method of the theory analysis is practical.

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Chai, Jing, Zhe Yan, Yibo Ouyang, et al. "Dynamic Monitoring of Goaf Stress Field and Rock Deformation Driven by Optical Diber Sensing Technology." Applied Sciences 15, no. 8 (2025): 4393. https://doi.org/10.3390/app15084393.

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Addressing the critical technological needs for the real-time monitoring of stress distribution in mining areas, a new method for inverting goaf pressure using distributed optical fiber monitoring data is proposed. By coupling the key stratum fracture mechanics model with the subsidence trajectory function model, a theoretical model is established to accurately describe spatial stress evolution during coal mining. The model quantifies the relationship between goaf pressure changes and key stratum failures through a two-stage analysis of the subsidence process, based on distinct mechanical prop

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Zeng, Qinghe, Weihua Ming, Zhilong Zhang, Zichun Du, Zhen Liu, and Cuiying Zhou. "Construction of a 3D Stratum Model Based on a Solid Model." IEEE Access 9 (2021): 20760–67. http://dx.doi.org/10.1109/access.2021.3053628.

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Zhang, Dian, Min Wu, Chengda Lu, Luefeng Chen, Weihua Cao, and Jie Hu. "Intelligent Compensating Method for MPC-Based Deviation Correction with Stratum Uncertainty in Vertical Drilling Process." Journal of Advanced Computational Intelligence and Intelligent Informatics 25, no. 1 (2021): 23–30. http://dx.doi.org/10.20965/jaciii.2021.p0023.

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With the rapid development of control technology, increasing applications are using model predictive control (MPC) for deviation correction in vertical drilling. However, the accuracy of the predictive model is affected by the uncertainty of the stratum, which results in model mismatch and a reduction in control performance. In this paper, an intelligent compensating method is proposed for MPC-based deviation correction with stratum uncertainty in a vertical drilling process to increase control accuracy. First, a trajectory extension model is introduced as the predictive model for MPC, and the

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Graham, C., I. Gatherar, I. Haslam, M. Glanville, and N. L. Simmons. "Expression and localization of monocarboxylate transporters and sodium/proton exchangers in bovine rumen epithelium." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 292, no. 2 (2007): R997—R1007. http://dx.doi.org/10.1152/ajpregu.00343.2006.

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Monocarboxylate-H+ cotransporters, such as monocarboxylate transporter (MCT) SLC16A, have been suggested to mediate transruminal fluxes of short-chain fatty acids, ketone bodies, and lactate. Using an RT-PCR approach, we demonstrate expression of MCT1 (SLC16A1) and MCT2 (SLC16A7) mRNA in isolated bovine rumen epithelium. cDNA sequence from these PCR products combined with overlapping expressed sequence tag data allowed compilation of the complete open reading frames for MCT1 and MCT2. Immunohistochemical localization of MCT1 shows plasma membrane staining in cells of the stratum basale, with i

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Guo, Peng, Stanley D. Hillyard, and Bingmei M. Fu. "A two-barrier compartment model for volume flow across amphibian skin." American Journal of Physiology-Regulatory, Integrative and Comparative Physiology 285, no. 6 (2003): R1384—R1394. http://dx.doi.org/10.1152/ajpregu.00168.2003.

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The amphibian skin has long been used as a model tissue for the study of ion transport and osmotic water movement across tight epithelia. To understand the mechanism of water uptake across amphibian skin, we model the skin as a well-stirred compartment bounded by an apical barrier and a tissue barrier. The compartment represents the lateral intercellular space between cells in the stratum granulosum. The apical barrier represents the stratum corneum, the principal/mitochondria-rich cells, and the junctional area between cells. This barrier is hypothesized to have the ability to actively transp

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Su, Haijian, Yujie Feng, Qingzhen Guo, Hongwen Jing, and Wenxin Zhu. "Model Experimental Study on the Seepage and Failure Features of Tunnel under Wetting-Drying Alternation with Increasing Water Pressure." Geofluids 2020 (July 4, 2020): 1–11. http://dx.doi.org/10.1155/2020/8845528.

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Wetting-drying alternation caused by seasonal rainfall and water fluctuation has a negative effect on the rock mass. Model experiments were conducted in this paper to investigate the role of wetting-drying alternation on the seepage and failure features of a tunnel. Water-bearing structure was located in the lateral position of tunnel. The stratum thickness between the tunnel and water-bearing structure was ranged from 20 to 100 mm. The results showed that, with an increase in the wetting-drying alternation number, the pore water pressure increases gradually. The critical water pressure also i

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Szyszkowicz, Mieczysław. "Use of two-point models in “Model choice in time-series studies of air pollution and mortality”." Air Quality, Atmosphere & Health 13, no. 2 (2020): 225–32. http://dx.doi.org/10.1007/s11869-019-00787-5.

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AbstractIn this work, a new technique is proposed to study short-term exposure and adverse health effects. The presented approach uses hierarchical clusters with the following structure: each pair of two sequential days in 1 year is embedded in the year. We have 183 clusters per year with the embedded structure <year:2 days>. Time-series analysis is conducted using a conditional Poisson regression with the constructed clusters as a stratum. Unmeasured confounders such as seasonal and long-term trends are not modelled but are controlled by the structure of the clusters. The proposed techn

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Zhou, Cuiying, Jinwu Ouyang, Weihua Ming, Guohao Zhang, Zichun Du, and Zhen Liu. "A Stratigraphic Prediction Method Based on Machine Learning." Applied Sciences 9, no. 17 (2019): 3553. http://dx.doi.org/10.3390/app9173553.

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Simulation of a geostratigraphic unit is of vital importance for the study of geoinformatics, as well as geoengineering planning and design. A traditional method depends on the guidance of expert experience, which is subjective and limited, thereby making the effective evaluation of a stratum simulation quite impossible. To solve this problem, this study proposes a machine learning method for a geostratigraphic series simulation. On the basis of a recurrent neural network, a sequence model of the stratum type and a sequence model of the stratum thickness is successively established. The perfor

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Lafleur, Michel. "Phase behaviour of model stratum corneum lipid mixtures: an infrared spectroscopy investigation." Canadian Journal of Chemistry 76, no. 11 (1998): 1501–11. http://dx.doi.org/10.1139/v98-114.

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The stratum corneum, the top layer of the epidermis, is the material that constitutes the membrane enveloping our body. The lipids that are present are responsible for the permeability properties of the skin and, as a consequence, are essential to maintain the hydration of the internal components and to protect our body from external agents. In the present work, the mixing and the structural properties of model mixtures formed by the main lipids of the stratum corneum have been examined by infrared spectroscopy. The model is formed by an equimolar mixture of ceramides (type III), cholesterol,

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Zhu, Cheng, Yong Yuan, Hanqing Sun, Zhongshun Chen, and Wenmiao Wang. "Optimal Layout Methods for Deep Chamber to Separate Coal and Gangue Based on the Weak Stratum Horizon." Processes 11, no. 8 (2023): 2484. http://dx.doi.org/10.3390/pr11082484.

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Aiming at the optimal layout of a deep chamber for coal–gangue separation (DCCS) based on the weak stratum horizon, an in-depth study was carried out by combining field investigations, model tests, and numerical simulations. Firstly, the main structural characteristics of DCCS were summarized. Then, the deformation and failure law for rocks surrounding DCCS were revealed under different horizons in the weak stratum. Finally, the optimal layout methods of DCCS based on the thickness and horizon in the weak stratum were determined in different in situ stresses, using the proposed comprehensive e

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Wang, Fengnian, Gan Li, and Chi Liu. "Investigation on Rock Strata Fracture Regulation and Rock Burst Prevention in Junde Coal Mine." Mathematical Problems in Engineering 2021 (September 25, 2021): 1–11. http://dx.doi.org/10.1155/2021/2583707.

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Through the establishment of structural mechanics model, this paper analyzes the fracture of super thick rock stratum. Through the model, it can be seen that the fracture of low-level super thick rock stratum produces large elastic energy release and dynamic load, which is easy to produce disasters such as rock burst. The numerical calculation shows that under the influence of low hard and thick rock stratum, the leading area of coal mine roadway will produce energy concentration, and the coal pillar will also produce energy accumulation. Thick rock stratum is in bending state and has large be

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Li, Ying, Zhong Ze He, Gui Hua Yan, and Feng You Han. "Foundation Pit Dewatering and Ground Subsidence in Binary Structural Stratum of Wuhan." Advanced Materials Research 639-640 (January 2013): 694–99. http://dx.doi.org/10.4028/www.scientific.net/amr.639-640.694.

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The geological model of pit of binary structure stratum is established under the analysis of the engineering geological characteristics of the binary structure stratum of Wuhan , combined with land subsidence and groundwater flow characteristics calculated. Associated with the use of software of Processing Modflow to calculate settlement around the excavation, the rules of ground settlement of excavation of dual structure stratum in Wuhan are obtained. And it provides a theoretical foundation and practical support for the same project.

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Yang, Ke, Xiaolou Chi, Wenjie Liu, Litong Dou, and Zhen Wei. "Strong Ground Pressure Mechanism and Control at the Longwall Top Coal Caving with a Single Key Stratum in Goaf." Shock and Vibration 2020 (August 24, 2020): 1–12. http://dx.doi.org/10.1155/2020/8835101.

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A strong ground pressure in the multiseam environment manifested by rib spalling and roadway deformation at the fully mechanized working face was assessed by a comprehensive combination of field measurements, physical simulations, and theoretical analysis for two coal seams in the Buertai Coal Mine in China. A structural model of overlying stratum collapse at the working face with the key stratum breaking instability was proposed, the mechanism of strong ground pressure at the longwall top coal caving working face with a single key stratum in goaf was identified, and respective control counter

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Knyazeva, A. G., S. M. Martemiyanov, and A. L. Maslov. "Two-phase model of thermal decomposition of shale stratum." EPJ Web of Conferences 82 (2015): 01063. http://dx.doi.org/10.1051/epjconf/20158201063.

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Song, Kezhi, Huaxun Yang, Kai An, and Qingpo Zhou. "Shield Tunneling Rate Prediction Model for Complex Rock Stratum." Journal of Highway and Transportation Research and Development (English Edition) 4, no. 2 (2010): 73–76. http://dx.doi.org/10.1061/jhtrcq.0000295.

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Friberg, Stig E., Ibrahim Kayali, Wayne Beckerman, Linda D. Rhein, and Anthony Simion. "Water Permeation of Reaggregated Stratum Corneum with Model Lipids." Journal of Investigative Dermatology 94, no. 3 (1990): 377–80. http://dx.doi.org/10.1111/1523-1747.ep12874497.

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Mueller, Josefin, Annett Schroeter, Roland Steitz, Marcus Trapp, and Reinhard H. H. Neubert. "Preparation of a New Oligolamellar Stratum Corneum Lipid Model." Langmuir 32, no. 18 (2016): 4673–80. http://dx.doi.org/10.1021/acs.langmuir.6b00655.

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Petlin, Danila G., Maksym Rybachuk, and Yuri G. Anissimov. "Pathway Distribution Model for Solute Transport in Stratum Corneum." Journal of Pharmaceutical Sciences 104, no. 12 (2015): 4443–47. http://dx.doi.org/10.1002/jps.24669.

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Tojo, Kakuji. "Random Brick Model for Drug Transport across Stratum Corneum." Journal of Pharmaceutical Sciences 76, no. 12 (1987): 889–91. http://dx.doi.org/10.1002/jps.2600761209.

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Mu, Hua-yan, Guan-cheng Jiang, Jin-sheng Sun, Teng-fei Dong, and Yin-bo He. "Optimization of Rock Breaking Parameters by Combing Mechanical Specific Energy Theory and Random Forest Algorithm." Journal of Physics: Conference Series 2834, no. 1 (2024): 012057. http://dx.doi.org/10.1088/1742-6596/2834/1/012057.

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Abstract As the key indicators to evaluate drilling efficiency, mechanical rate of penetration (ROP) and mechanical specific energy (MSE) are affected by many uncertain factors. In the actual drilling process, it is often necessary to adjust the parameters to achieve speed and efficiency. A dual-objective model is established considering the maximization of ROP and the minimization of MSE. Which combined with the theory of mechanical specific energy and the principle of multi-objective optimization, the model parameter weights are determined by the feature importance in the random forest regre

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Wei, Dong, Ming Chen, Wenbo Lu, and Zhihua Wang. "Failure Mechanism of Back-Break in Bench Blasting of Thin Terrane." Applied Sciences 11, no. 6 (2021): 2577. http://dx.doi.org/10.3390/app11062577.

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The shape of a free surface is an important factor that determines the effect of bench blasting. The structural dynamics theory was applied to establish a structural failure model of the layered rock considering the impact of a blasting gas intrusion. Combined with the continuous-discontinuous element method (CDEM), the influence of rock strata on the failure mechanism of back-break was analyzed. The results show that structural failure characteristics of stratum with different dip angles are different. The bending failure characteristics of dipping-in-face stratum are stronger than that in di

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Zhao, Y. C., H. L. Qin, K. F. Xu, and X. L. Lü. "Model test and numerical analysis of shield tunnel face instability in sandy soil with strain-softening properties." IOP Conference Series: Earth and Environmental Science 1330, no. 1 (2024): 012015. http://dx.doi.org/10.1088/1755-1315/1330/1/012015.

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Abstract During excavation of a shield tunnel in a sandy stratum, variations in the state of the sand affect the stratum stability of the shield tunnel face. When dense sand is loaded, its strength decreases gradually owing to dilatancy and it exhibits strain-softening behavior. Model tests and finite element numerical simulations were performed to clarify the failure characteristics of the tunnel face induced by strain-softening. In the model tests, a dense sand stratum was constructed; the movement of the supporting plate of the excavation face was controlled to simulate the progressive fail

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Zhang, Xiaoqiang, Bolin Hu, Jiaxing Zou, Chuandong Liu, and Yuanfan Ji. "Quantitative Characterization of Overburden Rock Development Pattern in the Goaf at Different Key Stratum Locations Based on DEM." Advances in Civil Engineering 2021 (December 14, 2021): 1–18. http://dx.doi.org/10.1155/2021/8011350.

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The overburden rock mining fissures are the main cause of coal spontaneous combustion, gas pooling, and mine water inrush caused by goaf air leakage. Rapid and accurate determination of the development and evolution law of mining fissures have great significance for the application of coal spontaneous combustion prevention and control, gas disaster prevention and control, and water damage prevention and control measures. In this paper, a preliminary judgment of the development height of the water-conducting fracture zone is made based on the theoretical analysis, and the physical model size of

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Pereira, J. M., J. M. Mansour, and B. R. Davis. "The Effects of Layer Properties on Shear Disturbance Propagation in Skin." Journal of Biomechanical Engineering 113, no. 1 (1991): 30–35. http://dx.doi.org/10.1115/1.2894082.

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The effects of the stratum corneum and dermis on shear wave propagation along the skin surface was investigated using a mathematical model. The skin was modeled as two distinct viscoelastic layers, one representing the stratum corneum and the other representing the dermis. The layers were supported by a semi-infinite viscoelastic half-space representing the subcutaneous fat. Physical and mechanical properties of the materials in the model were determined from the literature and from our own experimental measurements. Although the stratum corneum is very thin (12-15 microns), results showed tha

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