Journal articles: 'ROPE matrix'

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Kuismin, M. O., J. T. Kemppainen, and M. J. Sillanpää. "Precision Matrix Estimation With ROPE." Journal of Computational and Graphical Statistics 26, no. 3 (May 25, 2017): 682–94. http://dx.doi.org/10.1080/10618600.2016.1278002.

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Liang, Jun, Chunjing Wu, Hang Ping, Ming Wang, and Weizhong Tang. "Surface Pretreatment and Fabrication Technology of Braided Carbon Fiber Rope Aluminum Matrix Composite." Metals 10, no. 9 (September 9, 2020): 1212. http://dx.doi.org/10.3390/met10091212.

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Carbon fiber is mainly distributed in the shape of short fibers and continuous fiber bundles as the reinforcing phase in metal matrix composites, and it is seldom studied as braided rope shaped to reinforce the matrix. For this paper, the pretreatment and the surface metallization of the carbon fiber braided rope were studied. Besides, the casting experiments of aluminum-based carbon fiber braided rope composites were performed without external pressure. XPS analysis shows that the surface of the carbon fiber braided rope treated with ultrasonic degumming contains many hydrophilic oxygen-containing functional groups C-OH, C=O, COOH, etc., which can effectively improve the wettability between the carbon fiber braided rope and the aluminum matrix. SEM, EDS, and XRD were used to analyze the micromorphology and structure of the copper plating on the surface of carbon fiber braided ropes obtained from different pH plating solutions. When pH is 12, a continuous, uniform, and dense layer was formed on the surface of carbon fiber braided ropes. In addition, copper coating can effectively inhibit the formation of Al4C3 brittle phase. Finally, the mechanical properties results indicated that the tensile strength of the carbon fiber bundle and carbon fiber rope reinforced composite materials were 69 MPa and 83 MPa, respectively, indicating that the reinforcing effect of the carbon fiber rope is better than that of the carbon fiber bundle.

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Zhao, Yun Peng, and Nan Li. "Research on Coordinate System Transformation in Flexible Rope FEA." Advanced Materials Research 753-755 (August 2013): 1785–89. http://dx.doi.org/10.4028/www.scientific.net/amr.753-755.1785.

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This paper focuses on the transform relationships between each element and between elements with inertial system under different attitude coordinate system in the finite element multi-body system mechanical analysis of the flexible rope process. It mainly research the attitude coordinate transformation matrix between the of flexible rope Micro-element and inertial system under the four coordinate system which are the direction cosine coordinates, finite rotation four element coordinates, Euler angle coordinate and Cardan angle coordinates, and the relationship between the connecting base on the element type and inertial reference based.

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Stawowiak, Michał, Marcel Żołnierz, and Zenon Rożenek. "The use of flat steel-polymer supporting ropes in mining multi-pole hoisting devices." New Trends in Production Engineering 2, no. 1 (October 1, 2019): 168–77. http://dx.doi.org/10.2478/ntpe-2019-0017.

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Abstract The paper presents the development of a series of flat steel and polymer bearing ropes using a polyurethane polymeric material (the name of NPSP – flat steel-polyurethane). These ropes are intended for mining extraction devices with friction drive (multi-mill drive wheel, multi-rope drums with a number of ropes from 3 to 12 pieces). The authors of this article have presented a comparison of the drive power of a selected multi-mine mine hoist device with a classic steel round rope with the same extractor in which steel and polymer flat carrying ropes were used. The article also presents the development of mining construction of hoisting equipment, which includes the use of new rope ropes. Very positive results from exploitation in Polish mining of flat steel-rubber balance ropes (durability up to 12 years) can be the basis for the use of such ropes as supporting ropes. Flat steel-polymer supporting ropes, in which the matrix can be rubber or polyurethane or other plastic material, could contribute to increasing the durability of load-bearing ropes due to anti-corrosion protection as well as to reduce the dimensions of drive wheels and rope hoisting machines, and thus to lower the power of the winding machine (as a result of reducing the moments of inertia of the propeller, propulsion and rope). It is also worth mentioning that the NPSP carrying ropes can work directly on steel coatings of propeller drums with proper positioning, created by clamping elements (wood, plastic or aluminum blocks).

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Tihonov, Evgeniy. "MATRIX CAGES HOLDING SYSTEM FOR INDUSTRIAL FISH FARMING." Fisheries 2020, no. 1 (February 26, 2020): 93–99. http://dx.doi.org/10.37663/0131-6184-2020-1-93-99.

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In the paper, the technical aspects of modeling the retention system of matrixtype cages for industrial fish farming in a pond is considered. To date, there is no developed calculation methodology that takes into account the layout features of each cage module. The layout of the modules can vary significantly: from 1 to 36 cages of various designs. The aim of the work is to substantiate the parameters of the holding ropes, the length of the pull chains and the required mass of anchors by calculating the tensile forces in the ropes and the reaction of the anchor supports when solving the dynamic task in an unsteady setting. To solve this problem, a dynamic system was developed considering wind, wave, and inertial loads acting on all elements of the system: cage, holding ropes, chains, anchors. The force acting on the surface of the cage from the wind is received. The values of tensile forces in the ropes, the reaction of the supports of the anchors in three planes are obtained. The lengths of the chains are identified, ensuring the absence of tearing forces acting on the anchors. The masses of anchors are calculated taking into account the Archimedean force, depending on the density of the anchors’ material. The simulation lasted for 60 s. At 37 seconds of calculation, a resonant phenomenon was revealed: a significant increase in the breaking strength in the rope.

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Ren, Y., F. Li, H. M. Cheng, and K. Liao. "Fatigue Behaviour of Unidirectional Single-Walled Carbon Nanotube Reinforced Epoxy Composite under Tensile Load." Advanced Composites Letters 12, no. 1 (January 2003): 096369350301200. http://dx.doi.org/10.1177/096369350301200103.

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Tension-tension fatigue behaviour of unidirectional, aligned single-walled carbon nanotube (SWNT) rope reinforced epoxy composites were studied. While the slope of the stress-life (S-N) curve of the SWNTs in SWNT/epoxy composites obtained is flat, similar to those of carbon fibre reinforced epoxy composites, the fatigue strength of the former is at least twice that of the latter. Morphology of the fatigue fracture surface of SWNT reinforced epoxy involves matrix plastic deformation and SWNT-bridged matrix cracks. Evidence of good adhesion between SWNTs and epoxy was seen, and pullout length of SWNTs from the matrix is about 30 μm. Results suggest that carbon nanotubes can be used for fatigue resistant, high fracture toughness composites.

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Zhang, Donglai, Min Zhao, Zhihui Zhou, and Shimin Pan. "Characterization of Wire Rope Defects with Gray Level Co-occurrence Matrix of Magnetic Flux Leakage Images." Journal of Nondestructive Evaluation 32, no. 1 (December 28, 2012): 37–43. http://dx.doi.org/10.1007/s10921-012-0156-6.

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Zhang, Yang, Duanwei Shi, Lekang Liao, Lang Shi, and Xionghao Cheng. "Pitch stability analysis of high-lift wire rope hoist vertical shiplift under shallow water sloshing–structure interaction." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 233, no. 4 (June 8, 2019): 942–55. http://dx.doi.org/10.1177/1464419319850666.

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Pitch stability under shallow water sloshing–structure interaction has always been the most concerned issue in the design of the high-lift wire rope hoist vertical shiplift, which brings great challenges to the operational safety. A semi-analytical method including the developed modal system and the new coupled dynamics model is presented for pitch stability analysis. Based on the linear modal theory, the modal system is developed to describe the shallow water sloshing in the shiplift chamber, and the hydrodynamic moment associated with infinite set of modal functions is reasonably simplified by only retaining the lowest mode. Then a new 9-DOF coupled dynamics model of the complete main hoist system, shiplift chamber motion, and shallow water sloshing is established as dynamic equations by using the Lagrange equation of the second kind. Subsequently, the coefficient matrix of the dynamic equations and the Lyapunov motion stability theory are used in combination to numerically obtain the critical distance of suspension points. Taking four typical high-lift wire rope hoist shiplifts as an example, the results indicate that the proposed scheme improves the computational accuracy by 7.0–20.8% with respect to previous methods. Furthermore, for the being designed 200 m level wire rope hoist vertical shiplift, the preliminary design parameters can ensure the pitch stability safety factor not less than 1.3, increasing the wire rope stiffness or the synchronous shaft stiffness can effectively enhance the pitch stability.

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Wan, Jiaxin, Qi Wang, Siyao Zang, Xin'an Huang, Tao Wang, Guoqing Liu, Chunsheng Li, and Xiaomin Ren. "Highly stretchable and sensitive liquid-type strain sensor based on a porous elastic rope/elastomer matrix composite structure." Composites Science and Technology 182 (September 2019): 107707. http://dx.doi.org/10.1016/j.compscitech.2019.107707.

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Ouyang, Huimin, Xin Deng, Huan Xi, Jinxin Hu, Guangming Zhang, and Lei Mei. "Novel robust controller design for load sway reduction in double-pendulum overhead cranes." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, no. 12 (November 20, 2018): 4359–71. http://dx.doi.org/10.1177/0954406218813383.

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It is seen that when the hook mass is larger than the load mass or the load has distributed mass property, the load sway of the crane system presents as double-pendulum effect. In this situation, crane system has two different natural frequencies so that the sway characteristic becomes more complex and greatly increases the difficulty of the dynamic performance analysis and controller design. Moreover, the rope length changes significantly affect the stability and control performance of the crane system. In order to solve the aforementioned problems, the linear dynamics of a two-dimensional overhead crane with double-pendulum effect is derived based on a disturbance observer, and is decoupled for controller design by modal analysis. Next, a state feedback controller is presented to achieve robust control performance for a given range of rope length changes. The controller gains are obtained via linear matrix inequality optimization method. Finally, numerical simulations and experimental results validate that the proposed method has superior control performance.

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Shield, C. K., and G. A. Costello. "The Effect of Wire Rope Mechanics on the Mechanical Response of Cord Composite Laminates: An Energy Approach." Journal of Applied Mechanics 61, no. 1 (March 1, 1994): 9–15. http://dx.doi.org/10.1115/1.2901428.

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The behavior of one-ply and two-ply laminated cord-rubber composite plates in uniaxial tension is presented. The plate mechanical properties are presented as functions of cord angle for various cord-modulus to matrix-modulus ratios. The model developed takes account of the extension-twisting coupling of the cord, as well as the exact location of the cord within the composite plate. An energy method formulation is used, and the model is solved using the Ritz method. The current results are compared to classical lamination theory results to show the limits of usefulness for classical lamination theory for this class of composite.

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KATSUNO, Yusuke, Hiroshi MATSUHISA, Hideo UTSUNO, Keisuke YAMADA, and Katsutoshi SAWADA. "426 Non-contact Vibration Control of Elevator Rope using Magnetic Force : Comparison between Modal Analysis and Transfer Matrix Analysis." Proceedings of the Dynamics & Design Conference 2007 (2007): _426–1_—_426–6_. http://dx.doi.org/10.1299/jsmedmc.2007._426-1_.

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Samson, Leszek, and Maciej Kahsin. "A Method to Determine the Tightening Sequence for Standing Rigging of a Mast." Polish Maritime Research 26, no. 4 (December 1, 2019): 47–55. http://dx.doi.org/10.2478/pomr-2019-0065.

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Abstract The article proposes an alternative method to determine the sequence of generation of pre-tension forces in standing rigging of a mast. The proposed approach has been verified on both a virtual simulation experiment and laboratory tests. In this method, the desired tension values are obtained using the influence matrix which allows to calculate the effect of tension change in an individual rope on the tension distribution in the remaining ropes in the system. Unlike the presently used method, in which the desired tension distribution is obtained in a long-lasting iterative process burdened with relatively large errors of final values, the proposed method makes it possible to achieve the final tension distribution in a finite number of steps. In the case of FEM analyses, the new method can be a useful tool for determining an arbitrary distribution of tension forces in ropes via solving a system of linear equations.

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Rahmalina, Dwi, Bondan Tiara Sofyan, Bambang Suharno, and Eddy S. Siradj. "Development of Steel Wire Rope – Reinforced Aluminium Composite for Armour Material Using the Squeeze Casting Process." Advanced Materials Research 277 (July 2011): 27–35. http://dx.doi.org/10.4028/www.scientific.net/amr.277.27.

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Steel wire rope – reinforced aluminium composite - has been developed to improve the ballistic properties and mobility of armour material. Critical to obtaining ballistic resistance is that the materials must be sufficiently hard and strong, especially at the surface where a projectile will first make impact. To obtain this resistance, aluminium alloys can be strengthened by adding Cu and Mg. This research studied the ballistic properties of aluminium composites with varied Cu and Mg content. The matrix used in this study was an Al-7Si master alloy with 0.08-1.03 wt. % Mg and 0.05-3.75 wt. % Cu, both independently and in combination. A high carbon steel wire rope was used as strengthening material. The samples were produced through the squeeze casting process with a pressure of 1 MPa at semi-solid melting temperatures of 590-610 °C. The slab was then rolled for 10 % reduction to increase the hardness. Ballistic testing was performed in accordance with ASTM F1233 by using a 9 mm calibre projectile and 900 direction. Micro structural observation was conducted in the as-cast and ballistic samples, performed with optical microscope and scanning electron microscope (SEM). The results showed that squeeze casting may improve interfacial wettability and reduce void. The increase in Mg resulted in the decline of interfacial voids, but Cu addition tended to increase them. The aluminium armour was able to withstand a 9 mm calibre projectile, although some cracks were visible. The wire rope was not effective in stopping the penetration of a 7.62 mm calibre projectile.

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Зимовець, Вікторія Ігорівна, Олександр Сергійович Приходченко, and Микита Ігорович Мироненко. "ІНФОРМАЦІЙНО-ЕКСТРЕМАЛЬНИЙ КЛАСТЕР-АНАЛІЗ ВХІДНИХ ДАНИХ ПРИ ФУНКЦІОНАЛЬНОМУ ДІАГНОСТУВАННІ." RADIOELECTRONIC AND COMPUTER SYSTEMS, no. 4 (December 25, 2019): 105–15. http://dx.doi.org/10.32620/reks.2019.4.12.

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The study aims to increase the functional efficiency of machine learning of the functional diagnosis system of a multi-rope shaft hoist through cluster analysis of diagnostic features. To achieve the goal, it was necessary to solve the following tasks: formalize the formulation of the task of information synthesis, capable of learning a functional diagnosis system, which operates in the cluster-analysis mode of diagnostic signs; to propose a categorical model and, on its basis, to develop an algorithm for information-extreme cluster analysis of diagnostic signs in the process of information-extreme machine learning of a functional diagnostic system; carry out fuzzification of input fuzzy data by optimizing the geometric parameters of hyperspherical containers of recognition classes that characterize the possible technical conditions of the diagnostic object; to develop an algorithm and implement it on the example of information synthesis of the functional diagnostics system of a multi-rope mine hoisting machine. The object of the study is the processes of information synthesis of a functional diagnostic system capable of learning, integrated into the automated control system of a multi-rope mine hoisting machine. The subject of the study is categorical models, an information-extremal machine learning algorithm of a functional diagnostic system that operates in the cluster analysis model of diagnostic signs and constructs decision rules. The research methods are based on the ideas and methods of information-extreme intellectual data analysis technology, a theoretical-informational approach to assessing the functional effectiveness of machine learning and on the geometric approach of pattern recognition theory. As a result, the following results were obtained: a categorical model was proposed, and on its basis, an algorithm for information-extremal machine learning of the functional diagnostics system for a multi-rope mine hoist was developed and implemented, which allows you to automatically generate an input classified fuzzy training matrix, which significantly reduces time and material costs when creating incoming mathematical description. The obtained result was achieved by cluster analysis of structured vectors of diagnostic signs obtained from archival data for three recognition classes using the k-means procedure. As a criterion for optimizing machine learning parameters, we considered a modified Kullback measure in the form of a functional on the exact characteristics of diagnostic solutions and distance criteria for the proximity of recognition classes. Based on the optimal geometric parameters of the containers of recognition classes obtained during machine learning, decisive rules were constructed that allowed us to classify the vectors of diagnostic features of recognition classes with a rather high total probability of making the correct diagnostic decisions. Conclusions. The scientific novelty of the results obtained consists in the development of a new method for the information synthesis of the functional diagnostics system of a multi-rope mine hoisting machine, which operates in the cluster analysis model, which made it possible to automatically form an input classified fuzzy training matrix with its subsequent dephasification in the process of information-extreme machine learning system.

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Yan, Lu, Guohua Cao, Naige Wang, and Weihong Peng. "Schematic Diagrams Design of Displacement Suppression Mechanism with One Degree-of-Freedom in a Rope-Guided Hoisting System." Symmetry 12, no. 3 (March 18, 2020): 474. http://dx.doi.org/10.3390/sym12030474.

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Since it is difficult for lateral stiffness of rope-guided rails to meet industry criteria in deep construction shaft, schematic diagrams of displacement suppression mechanisms (DSMs) are designed with a systematic approach demonstrated to reduce the lateral displacement of rope-guided rails in this paper. DSMs are simplified as planar four-bar and six-bar topological graphs based on topological theory. Each corresponding mechanical chain of these four-bar and six-bar mechanisms is divided into a rack, mechanical parts, prismatic, and revolute joints. An extended adjacency matrix is defined to represent the rack position, specific types of kinematic joints, and adjacency relationships between kinematic parts. Then, a symmetric vertex identification method is proposed with regard to planar 1-DOF (one degree of freedom) four-bar and six-bar topological graphs to get the sequences of prismatic joints for kinematic chains of DSMs. Finally, the alternative schematic diagrams of DSMs are obtained. The results show four-bar mechanisms with simple structure; few kinematical parts but less resident force are suitable for a mine shaft with small space and small swing. Six-bar mechanisms with two prismatic joints and three mechanical rack degree are applicable for wide shaft space in deep shaft, due to their stable structure and double resistant force. This development is helpful for DSM dimension synthesis design in future.

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Pan, Yitao, Yuan Chen, and Lin Li. "Analysis of kinematic dexterity and stiffness performance based on Spring’s wire-driven 4-SPS/U rigid‒flexible parallel trunk joint mechanism." International Journal of Structural Integrity 10, no. 6 (December 2, 2019): 850–67. http://dx.doi.org/10.1108/ijsi-02-2019-0010.

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Purpose The purpose of this paper is to propose a two-degrees-of-freedom wire-driven 4SPS/U rigid‒flexible parallel trunk joint mechanism based on spring, in order to improve the robot’s athletic ability, load capacity and rigidity, and to ensure the coordination of multi-modal motion. Design/methodology/approach First, based on the rotation transformation matrix and closed-loop constraint equation of the parallel trunk joint mechanism, the mathematical model of its inverse position solution is constructed. Then, the Jacobian matrix of velocity and acceleration is derived by time derivative method. On this basis, the stiffness matrix of the parallel trunk joint mechanism is derived on the basis of the principle of virtual work and combined with the deformation effect of the rope driving pair and the spring elastic restraint pair. Then, the eigenvalue distribution of the stiffness matrix and the global stiffness performance index are used as the stiffness evaluation index of the mechanism. In addition, the performance index of athletic dexterity is analyzed. Finally, the distribution map of kinematic dexterity and stiffness is drawn in the workspace by numerical simulation, and the influence of the introduced spring on the stiffness distribution of the parallel trunk joint mechanism is compared and analyzed. It is concluded that the stiffness in the specific direction of the parallel trunk joint mechanism can be improved, and the stiffness distribution can be improved by adjusting the spring elastic structure parameters of the rope-driven branch chain. Findings Studies have shown that the wire-driven 4SPS/U rigid‒flexible parallel trunk joint mechanism based on spring has a great kinematic dexterity, load-carrying capacity and stiffness performance. Research limitations/implications The soft-mixed structure is not mature, and there are few new materials for the soft-mixed mixture; the rope and the rigid structure are driven together with a large amount of friction and hindrance factors, etc. Practical implications It ensures that the multi-motion mode hexapod mobile robot can meet the requirement of sufficient different stiffness for different motion postures through the parallel trunk joint mechanism, and it ensures that the multi-motion mode hexapod mobile robot in multi-motion mode can meet the performance requirement of global stiffness change at different pose points of different motion postures through the parallel trunk joint mechanism. Social implications The trunk structure is a very critical mechanism for animals. Animals in the movement to achieve smooth climbing, overturning and other different postures, such as centipede, starfish, giant salamander and other multi-legged animals, not only rely on the unique leg mechanism, but also must have a unique trunk joint mechanism. Based on the cooperation of these two mechanisms, the animal can achieve a stable, flexible and flexible variety of motion characteristics. Therefore, the trunk joint mechanism has an important significance for the coordinated movement of the whole body of the multi-sport mode mobile robot (Huang Hu-lin, 2016). Originality/value In this paper, based on the idea of combining rigid parallel mechanism with wire-driven mechanism, a trunk mechanism is designed, which is composed of four spring-based wire-driven 4SPS/U rigid‒flexible parallel trunk joint mechanism in series. Its spring-based wire-driven 4SPS/U rigid‒flexible parallel trunk joint mechanism can make the multi-motion mode mobile robot have better load capacity, mobility and stiffness performance (Qi-zhi et al., 2018; Cong-hao et al., 2018), thus improving the environmental adaptability and reliability of the multi-motion mode mobile robot.

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Yu, Yanan, and Aili Qi. "Five Stars Teaching Mode of Sports Training Based on APP Microcourse." International Journal of Emerging Technologies in Learning (iJET) 15, no. 06 (March 27, 2020): 152. http://dx.doi.org/10.3991/ijet.v15i06.13617.

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With the development of teaching reform, methods and concepts, microcourse teaching has been recognized and developed extensively. However, micro-class pays more attention to the presentation of key contents, and pays less to the teaching design guided by teaching principles, causing the waste of microcourse resources to some extent and affecting the effect of microcourse teaching. Moreover, most of the sports training lectures still follow in the traditional educational pattern of teacher-blackboard-teacher-student, which cannot satisfy students' desire for knowledge and contradict with the demand of social development. Therefore, on the basis of the teaching design of five-star teaching principle, the study focuses on and solves classroom problems, emphasizes the application of knowledge points in different situations, and establishes the relationship between new and old knowledge. Meanwhile, the study combines a new type of Rope Skipping APP microcourse technology, and elaborates the teaching of knowledge rope skipping in the form of microcourse teaching, forming a learning method combined sound and image with pictures. Finally, the study takes learners as the evaluation subject and adopts the analytic hierarchy process to construct five first-level indicators, including value, learning, interaction, technology and art, which makes full use of the expert group's quantitative evaluation on the comparison of the importance of each layer's factors. By constructing the judgment matrix, it calculates the weight value of each index and forms an objective and scientific evaluation index system of microcourse. The results confirm that the teaching mode of the study can be used as the basis for microcourse improvement and auto-recommendation.

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Indrikov, Aleksey A. "Ernst Jünger’s Phenomenon: Building “Beyond Oneself”." Tekst. Kniga. Knigoizdanie, no. 25 (2021): 22–37. http://dx.doi.org/10.17223/23062061/25/2.

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The article deals with the creative phenomenon of the German writer and thinker Ernst Jünger and his literary works that have formed a special, monumental and heroic matrix of European culture. The essence of this matrix is shown through deducing its main task – that is, as the author proposes, to preserve the semantic bridgehead for de-picting the heroic and the poetic, which is to confront the world of the simple non-spiritual demands of a consumer society. Contemporary European culture demands, as the author consistently proves, the monumental and heroic matrix. Since the second half of the 20th century, the European culture has found itself at a difficult civilizational crossroads: on the one hand, culture has been actively shaped by existentialism as an ideology of avoiding social transformation of the external world; on the other hand, European culture has been significantly pressed by the American culture of entertain-ment which invaded Europe even more after the end of World War II. As a result, Eu-rope has more and more abandoned its heroic, monumental and historical heritage. The matrix of culture formed by Jünger appears as a special edifice built on the notion of a person’s destiny and one’s spiritual capability revealed in a large-scale military con-frontation, in the war of “spaces”. The article discloses the peculiarities of Jünger’s monumental outlook on war as on a special cultural and historical landscape where an individual life is shaped into the destiny “beyond oneself”, into the fates of peoples and states. Jünger’s creative phenomenon is considered on the example of his first and most famous book, Storm of Steel, which is essentially authentic to the monumental and he-roic matrix of European culture. The unique and timeless value of this work is shown through its special historical and meta-cultural causality. The specific aspects of Jünger’s literary philosophy are shown as an embodiment of a doctrine that provides spiritual exaltation for the one who has aspired to create. The cultural-philosophical analysis of Jünger’s literary work undertaken in the article allows the author to draw to a conclusion about the heroic-monumental content of the Europe-an culture matrix, literally “encoded” in the compressed form of the novel Storm of Steel. As it follows from the research conducted by the author, there is a vital need in the culture for transforming the external world by the joint efforts of the heroes of one’s time, united by the task of a large-scale spiritual evolution of the humanity embodying their mission.

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Li, Xuejun, Yiping Shen, and Songlai Wang. "Dynamic Modeling and Analysis of the Large-Scale Rotary Machine with Multi-Supporting." Shock and Vibration 18, no. 1-2 (2011): 53–62. http://dx.doi.org/10.1155/2011/541049.

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The large-scale rotary machine with multi-supporting, such as rotary kiln and rope laying machine, is the key equipment in the architectural, chemistry, and agriculture industries. The body, rollers, wheels, and bearings constitute a chain multibody system. Axis line deflection is a vital parameter to determine mechanics state of rotary machine, thus body axial vibration needs to be studied for dynamic monitoring and adjusting of rotary machine. By using the Riccati transfer matrix method, the body system of rotary machine is divided into many subsystems composed of three elements, namely, rigid disk, elastic shaft, and linear spring. Multiple wheel-bearing structures are simplified as springs. The transfer matrices of the body system and overall transfer equation are developed, as well as the response overall motion equation. Taken a rotary kiln as an instance, natural frequencies, modal shape, and response vibration with certain exciting axis line deflection are obtained by numerical computing. The body vibration modal curves illustrate the cause of dynamical errors in the common axis line measurement methods. The displacement response can be used for further measurement dynamical error analysis and compensation. The response overall motion equation could be applied to predict the body motion under abnormal mechanics condition, and provide theory guidance for machine failure diagnosis.

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Doeppner, Thorsten R., Britta Kaltwasser, Ayman ElAli, Anil Zechariah, Dirk M. Hermann, and Mathias Bähr. "Acute Hepatocyte Growth Factor Treatment Induces Long-Term Neuroprotection and Stroke Recovery via Mechanisms Involving Neural Precursor Cell Proliferation and Differentiation." Journal of Cerebral Blood Flow & Metabolism 31, no. 5 (December 1, 2010): 1251–62. http://dx.doi.org/10.1038/jcbfm.2010.211.

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Hepatocyte growth factor (HGF) is an interesting candidate for acute stroke treatment as shown by continuous infusion or gene delivery protocols. However, little is known about HGF-mediated long-term effects. The present study therefore analyzed long-term effects of an acute intrastriatal HGF treatment (5 μg) after a 45-minute stroke, with regard to brain injury and neurologic recovery. Hepatocyte growth factor induced long-term neuroprotection as assessed by infarct volume and neuronal cell death analysis for as long as 4 weeks after stroke, which was associated with sustained neurologic recovery as evidenced by corner-turn and tight-rope tests. Analyzing underlying mechanisms of HGF-induced sustained neuroprotection, enhanced cell proliferation followed by increased neuronal differentiation of neural precursor cells (NPCs) was observed in the ischemic striatum of HGF-treated mice, which persisted for up to 4 weeks. In line with this, HGF promoted neurosphere formation as well as proliferation of NPC and decreased caspase-3-dependent hypoxic injury in vitro. Preservation of blood—brain barrier integrity 24 hours after stroke was furthermore noticed in animals receiving HGF, which was associated with the inhibition of matrix metalloproteases (MMP)-2 and MMP-9 at 4 and 24 hours, respectively. We suggest that sustained recruitment of proliferating cells together with improved neurovascular remodeling provides an explanation for HGF-induced long-term neuroprotection.

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Gupta, Anamika, Rumana Ahmad, Shivbrat Upadhayay, and A. N. Srivastava. "MATRIX METALLOPROTEINASES AND THEIR ROLE IN BREAST CANCER: A MINI REVIEW." Era's Journal of Medical Research 6, no. 1 (June 2019): 93–102. http://dx.doi.org/10.24041/ejmr2019.114.

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Ulriksen, Martin Dalgaard, Dmitri Tcherniak, Lasse M. Hansen, Rasmus Johan Johansen, Lars Damkilde, and Lars Frøyd. "In-situ damage localization for a wind turbine blade through outlier analysis of stochastic dynamic damage location vector-induced stress resultants." Structural Health Monitoring 16, no. 6 (December 27, 2016): 745–61. http://dx.doi.org/10.1177/1475921716681727.

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Today, structural integrity inspections of wind turbine blades are typically carried out by the use of rope or platform access. Since these inspection approaches are both tedious and extremely costly, a need for a method facilitating reliable, remote monitoring of the blades has been identified. In this article, it is examined whether a vibration-based damage localization approach proposed by the authors can provide such reliable monitoring of the location of a structural damage in a wind turbine blade. The blade, which is analyzed in idle condition, is subjected to unmeasured hits from a mounted actuator, yielding vibrations that are measured with a total of 12 accelerometers; of which 11 are used for damage localization. The employed damage localization method is an extended version of the stochastic dynamic damage location vector method, which, in its origin, is a model-based method that interrogates damage-induced changes in a surrogate of the transfer matrix. The surrogate’s quasi-null vector associated with the lowest singular value is converted into a pseudo-load vector and applied to a numerical model of the healthy structure in question, hereby, theoretically, yielding characteristic stress resultants approaching zero in the damaged elements. The proposed extension is based on outlier analysis of the characteristic stress resultants to discriminate between damaged elements and healthy ones; a procedure that previously, in the context of experiments with a small-scale blade, has proved to mitigate noise-induced anomalies and systematic, non-damage-associated adverse effects.

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Lyakhovich, Leonid, and Pavel Akimov. "AIMED CONTROL OF THE FREQUENCY SPECTRUM OF EIGENVIBRATIONS OF ELASTIC PLATES WITH A FINITE NUMBER OF DEGREES OF FREEDOM OF MASSES BY SUPERIMPOSING ADDITIONAL CONSTRAINTS." International Journal for Computational Civil and Structural Engineering 17, no. 2 (June 24, 2021): 76–82. http://dx.doi.org/10.22337/2587-9618-2021-17-2-76-82.

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As is known, for some elastic systems with a finite number of degrees of freedom of masses, for which thedirections of motion of the masses are parallel and lie in the same plane, methods have been developed for creatingadditional constraints that purposefully change the spectrum of natural frequencies. In particular, theory and algorithm forthe formation of aimed additional constraints have been developed for the rods, the introduction of each of which doesnot change any of the modes of natural vibrations, but only increases the value of only one frequency, without changingthe values of the remaining frequencies. The distinctive paper is devoted to the method of forming a matrix of additionalstiffness coefficients corresponding to such aimed constraint in the problem of natural vibrations of rods. This method canalso be applied to solving a similar problem for elastic systems with a finite number of degrees of freedom, in which thedirections of motion of the masses are parallel, but not lie in the same plane. In particular, such systems include plates.However, the algorithms for the formation of aimed additional constraints, developed for rods and based on the propertiesof rope polygons, cannot be used without significant changes in a similar problem for plates. The method for the formationof design constraint schemes that purposefully change the spectrum of frequencies of natural vibrations of elastic plateswith a finite number of degrees of freedom of masses, will be considered in the next work.

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Girko, Vyacheslav L. "The method of perpendiculars of finding estimates from below for minimal singular eigenvalues of random matrices." Random Operators and Stochastic Equations 26, no. 2 (June 1, 2018): 117–23. http://dx.doi.org/10.1515/rose-2018-0009.

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Abstract The lower bounds for the minimal singular eigenvalue of the matrix are obtained under the G-Lindeberg condition and the G-double stochastic condition for the variances of the matrix entries. The new method is based on the G-method of perpendiculars, the REFORM method, the martingale method, and the theory of canonical spectral equations.

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Zhang, Yang, Duanwei Shi, Tong Xiao, Ji Zhou, and Xionghao Cheng. "Pitch Stability Analysis for Mechanical-Hydraulic-Structural-Fluid Coupling System of High-Lift Hoist Vertical Shiplift." Strojniški vestnik – Journal of Mechanical Engineering 66, no. 4 (April 15, 2020): 256–75. http://dx.doi.org/10.5545/sv-jme.2019.6467.

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Pitch stability of the high-lift wire rope hoist vertical shiplift under dynamic hydraulic levelling has always been an issue of concern. It not only affects working efficiency but also brings significant challenges to operational safety. A new mechanical-hydraulic-structural-fluid (MHSF) coupling dynamics model and a developed semi-analytical method are presented for stable property analysis. The models of the hydraulic levelling subsystem, shallow water sloshing subsystem, the main hoist mechanical subsystem, and the shiplift chamber structure subsystem are built using a closed-loop transfer function, multi-modal theory, and an second-type Lagrangian equation, respectively. Then, a core twenty-one order state matrix of the MHSF coupling system is established using the state-space method. Subsequently, the Lyapunov motion stability theory and Eigen-analysis method are used in combination to judge the pitch stability and analyse the characteristics of the subsystems. Taking four typical high-lift hoist vertical shiplifts as examples, the rationality of the proposed model and method is validated. The results indicate that although the pitch stability safety factor under hydraulic dynamic levelling is reduced by about 15 % to 44 % with respect to hydraulic static levelling, hydraulic dynamic levelling still can meet stability requirements. Furthermore, for the designed 200 m level hoist vertical shiplift, the preliminary design parameters can ensure the pitch stability safety factor under dynamic hydraulic levelling of not less than 1.1. The element most prone to instability is the shallow water sloshing subsystem; increasing the synchronous shaft stiffness or the water boundary layer damping ratio can effectively enhance the pitch stability.

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Löwe, Matthias, and Kristina Schubert. "On the limiting spectral density of random matrices filled with stochastic processes." Random Operators and Stochastic Equations 27, no. 2 (June 1, 2019): 89–105. http://dx.doi.org/10.1515/rose-2019-2008.

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Abstract We discuss the limiting spectral density of real symmetric random matrices. In contrast to standard random matrix theory, the upper diagonal entries are not assumed to be independent, but we will fill them with the entries of a stochastic process. Under assumptions on this process which are satisfied, e.g., by stationary Markov chains on finite sets, by stationary Gibbs measures on finite state spaces, or by Gaussian Markov processes, we show that the limiting spectral distribution depends on the way the matrix is filled with the stochastic process. If the filling is in a certain way compatible with the symmetry condition on the matrix, the limiting law of the empirical eigenvalue distribution is the well-known semi-circle law. For other fillings we show that the semi-circle law cannot be the limiting spectral density.

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Girko, Vyacheslav L. "VICTORIA transform, RESPECT and REFORM methods for the proof of the G-permanent pencil law under G-Lindeberg condition for some random matrices from G-elliptic ensemble." Random Operators and Stochastic Equations 29, no. 2 (April 30, 2021): 111–48. http://dx.doi.org/10.1515/rose-2021-2057.

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Wang, Zhuo, Hong-xing Dang, Tao Wang, and Bo Zhang. "Development of a Position Measuring Device of a Deep-Sea Pipeline Based on Flange Center Positioning." Journal of Marine Science and Engineering 8, no. 2 (February 1, 2020): 86. http://dx.doi.org/10.3390/jmse8020086.

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A deep-sea pipeline position and attitude-measuring device based on pipeline outer circle positioning can measure the spatial relative positions of the end faces of two oil pipelines in the deep sea. This device can provide the necessary data to make a transition pipeline connecting two sections of oil pipelines together. However, after analyzing the data measured by this device, it is found that the measurement data has a large error because the error transmission coefficient of the measurement value is too large. In order to reduce the error transfer coefficient, a new measuring device for measuring the posture of deep-sea pipelines by a tensioning rope was proposed. Unlike previous measuring devices, this measuring device is based on the positioning of the flange center of the pipe instead of the pin on the outer circle of the pipe. With the comparison of positioning methods between fixing in the center of flange and fixing the outer wall of pipeline, the former can reduce the transition matrix in the process of solving the relative position of the two pipes, and then reduce the magnification of the measurement sensor error. It also reduces two measurement parameters. The solving formula of the position and attitude of the measuring device based on the outer circle positioning of the pipeline is analyzed. It is proved that the error transmission coefficient of the measuring device based on the flange center positioning is smaller. Experiments show that compared with the positioning method based on the outer circle of the pipe, the positioning method based on the flange center has a higher accuracy.

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Jothi Saravanan, T., N. Gopalakrishnan, and N. Prasad Rao. "Detection of damage through coupled axial–flexural wave interactions in a sagged rod using the spectral finite element method." Journal of Vibration and Control 23, no. 20 (February 8, 2016): 3345–64. http://dx.doi.org/10.1177/1077546316630855.

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This paper presents the results of a computational and experimental validation exercise performed towards damage identification of a sagged rod with known damage by using the coupled axial–flexural wave interaction mechanics. Towards simulating the damage scenario in a sagged conductor made of steel wire rope, a prismatic steel rod is taken up for study. An initial axial wave, tangential to the curve of the arc, manifests as both axial and flexural waves as it propagates alongside the length of the rod. This interaction effect between axial and flexure wave propagation is studied in this paper. Impedance mismatch is made in the rod by changing its cross-sectional area along its length. Numerical simulations are implemented using the spectral finite element method with a combined axial and flexure effect. The concept of obtaining the exact spectral element dynamic stiffness matrix for a wave propagation analysis sagged rod is discussed. Computation is implemented in the Fourier domain using Fast Fourier Transform (FFT). In the time domain, post processing of the response is done, which is applicable in structural diagnostics in addition to the wave propagation problem. The predominant single-frequency-based amplitude-modulated, narrow-banded, burst wave propagation is found to be better matched if the elemental rod theory is replaced with a modified rod theory called the Love theory. The differences in the propagating waves allow identification of the damage location in a very clear-cut way. The methodology of the moving correlation coefficient is also successfully employed to detect the damage precisely. This fact is very encouraging for future work on structural health monitoring.

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Girko, Vyacheslav L. "VICTORIA transform, RESPECT and REFORM methods for the proof of the G-Elliptic Law under G-Lindeberg condition and twice stochastic condition for the variances and covariances of the entries of some random matrices." Random Operators and Stochastic Equations 28, no. 2 (June 1, 2020): 131–62. http://dx.doi.org/10.1515/rose-2020-2034.

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32

Girko, Vyacheslav L. "From the first rigorous proof of the Circular Law in 1984 to the Circular Law for block random matrices under the generalized Lindeberg condition." Random Operators and Stochastic Equations 26, no. 2 (June 1, 2018): 89–116. http://dx.doi.org/10.1515/rose-2018-0008.

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Girko, Vyacheslav L. "𝑉-law for random block matrices under the generalized Lindeberg condition." Random Operators and Stochastic Equations 27, no. 3 (September 1, 2019): 177–98. http://dx.doi.org/10.1515/rose-2019-2016.

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Abstract The V-law under generalized Lindeberg condition for the independent blocks of random matrices having double stochastic matrix of covariances and different expectations of their array is proven.

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34

Girko, Vyacheslav L. "The RESPECT method. Simple proof of finding estimates from below for minimal singular eigenvalues of random matrices whose entries have zero means and bounded variances." Random Operators and Stochastic Equations 27, no. 3 (September 1, 2019): 167–75. http://dx.doi.org/10.1515/rose-2019-2015.

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Abstract The lower bounds for the minimal singular eigenvalue of the matrix whose entries have zero means and bounded variances are obtained. The new method is based on the G-method of perpendiculars and the RESPECT method.

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35

Gerlach, Hendrik, Hartwig Müller, Marcus Klingelhöfer, Roland Ziesch, Mikolaj Katkowski, Mirko Spieler, Wolfgang Nendel, Lothar Kroll, and Felix Bochmann. "Deflection Sheaves for Elevator Application in Lightweight Design." Key Engineering Materials 809 (June 2019): 347–52. http://dx.doi.org/10.4028/www.scientific.net/kem.809.347.

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Current elevators are mostly designed as rope-dependent elevators. Main components in the roping system are the deflection sheaves which are conventional manufactured of grey cast iron. Due to the high weight of cast iron sheaves there is a high potential for reducing mass, especially when regarding aspects of effort, safety and ergonomics while assembly and maintenance in the elevator shaft. Within the framework of a R&D co-operation the Chemnitz University of Technology and the AMB Oberlungwitz GmbH developed a fibre-reinforced plastic sheave that comply with the requirements of lightweight design. The technological basic approach to realize that development is compression molding of glass-mat-reinforced thermoplastics (GMT). The project includes the whole development-chain, consisting of part design, tool design, process chain arrangement, parameter studies as well as validation of specimen. In the course of the project appeared a high potential for improvement of the part properties by alternative design solutions. In this context current activities are focused on multi material design methods such as combining GMT with other thermoplastic prepregs. In this manner it is possible to equip every local area with the specific properties that are required. For example the ribs of the sheave, that receive highest values of stress, can be made of materials with continuous-fibre-reinforcement while the basic part body consists of GMT, which is long-fibre-reinforced. This method also enables to avoid process influenced effects like the segregation of the fibre-matrix distribution in GMT. Additionally the input of different materials offers chances to inlay non-preheated prepreg blanks into the compression mould, so that the amount of the preheated material volume can be reduced. In this way cycle times and also lost of temperature due to transfer times of the heated blanks to the mould can be reduced.

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Yaacoubi, Abdelhak. "A new family of positive recurrent semimartingale reflecting Brownian motions in an orthant." Random Operators and Stochastic Equations 28, no. 3 (September 1, 2020): 177–81. http://dx.doi.org/10.1515/rose-2020-2036.

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AbstractSemimartingale reflecting Brownian motions (SRBMs) are diffusion processes, which arise as approximations for open d-station queueing networks of various kinds. The data for such a process are a drift vector θ, a nonsingular {d\times d} covariance matrix Δ, and a {d\times d} reflection matrix R. The state space is the d-dimensional nonnegative orthant, in the interior of which the processes evolve according to a Brownian motions, and that reflect against the boundary in a specified manner. A standard problem is to determine under what conditions the process is positive recurrent. Necessary and sufficient conditions are formulated for some classes of reflection matrices and in two- and three-dimensional cases, but not more. In this work, we identify a new family of reflection matrices R for which the process is positive recurrent if and only if the drift {\theta\in\mathring{\Gamma}}, where {\mathring{\Gamma}} is the interior of the convex wedge generated by the opposite column vectors of R.

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37

Singh, S., and S. Saha Ray. "A stochastic operational matrix method for numerical solutions of multi-dimensional stochastic Itô–Volterra integral equations." Random Operators and Stochastic Equations 28, no. 3 (September 1, 2020): 209–16. http://dx.doi.org/10.1515/rose-2020-2040.

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AbstractIn this article, hybrid Legendre block-pulse functions are implemented in determining the approximate solutions for multi-dimensional stochastic Itô–Volterra integral equations. The block-pulse function and the proposed scheme are used for deriving a methodology to obtain the stochastic operational matrix. Error and convergence analysis of the scheme is discussed. A brief discussion including numerical examples has been provided to justify the efficiency of the mentioned method.

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38

Stamenkovic, Ivan. "Extracellular matrix remodelling: the role of matrix metalloproteinases." Journal of Pathology 200, no. 4 (July 2003): 448–64. http://dx.doi.org/10.1002/path.1400.

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39

Thygesen, Mathias Møller, Ida Jordt, Malene Svane Kristensen, Filip Yang Fisker, Sofie Kildegaard, and Mogens Pfeiffer-Jensen. "High-Intensity Resistance Training Does Not Produce Immediate Ultrasonographic Changes in Muscle Tendons." Orthopaedic Journal of Sports Medicine 7, no. 1 (January 1, 2019): 232596711882160. http://dx.doi.org/10.1177/2325967118821604.

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Background: Chronic overload injuries to tendons can be visualized using ultrasonography, with characteristics such as tendon thickening and darkening. Purpose: To investigate whether these characteristics are evident in the patellar and Achilles tendons immediately after 1 session of high-intensity resistance training. Study Design: Controlled laboratory study. Methods: A total of 18 volunteers were randomized to an experimental group (n = 10) and a sham group (n = 8). The experimental group performed 5 circuits at maximum effort consisting of 5 weighted front squats, 10 box jumps (60/50 cm), and 15 double-under jump-rope jumps. The sham group performed a similar circuit consisting of 5 weighted shoulder presses, 10 push-ups, and 15 weighted biceps curls. Ultrasonograms were obtained before and after exercise, for a total of 30 minutes at intervals of 2.5 minutes for the first 10 minutes and 5 minutes for the remaining time. Tendon thickness and tendon matrix signals were measured. Statistics were performed using repeated-measures mixed analysis of variance (ANOVA). Results: Tendon thickness did not increase significantly over 30 minutes after both circuits. The mean grayscale value for the patellar and Achilles tendons increased for both the experimental and the sham groups. ANOVA showed that the experimental group was not a significant explanatory variable; however, the increased work of both groups was. A post hoc analysis found that the maximum increase in the tendon signal was a grayscale value of 10.8 for the patellar tendon (99.4% CI, 3.7-17.9; P = .002). Conclusion: This trial failed to reproduce an earlier study in which tendon thickness increased after high-intensity training. The tendons produced a hyperechoic signal after high-intensity resistance training, regardless of loading to the tendon. Chronic overload characteristics on ultrasonography were not evident immediately after acute loading of tendons. Clinical Relevance: There is a need for prognostic and diagnostic markers of tendinopathy especially because of the protracted course of subclinical development of an injury. This study assessed whether clinical findings for a chronic overload injury can be detected during acute overloading.

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40

Burrage, Peter, S. "Matrix Metalloproteinases: Role In Arthritis." Frontiers in Bioscience 11, no. 1 (2006): 529. http://dx.doi.org/10.2741/1817.

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Gajda, Anna, and Andrzej Posyniak. "Oral fluid as material for non-invasive antibiotics detection in pigs." Medycyna Weterynaryjna 73, no. 8 (2017): 462–67. http://dx.doi.org/10.21521/mw.5761.

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Intensive and massive pig production often contributes to excessive administration of antibacterials in veterinary medicine. The misuse and failures to follow the label directions of antibiotics, as well as withdrawal inadequacy, can lead to their residue occurrence in products of animal origin. The residue of drugs may result in many biological adverse effects and allergic reactions in consumers as well as the spread of drug-resistant bacteria and bacterial resistance acquisition. Consolidation of pig production requires ensuring adequate conditions of the maintenance of animals with high health conditions, consistent with the guidelines for animal welfare. At the same time, the control of antibiotics in animals is an important element providing the high quality of pigs breeding, as well as the protection of consumers. In residue monitoring programs, the primary material for the control of antibiotics presence in pigs are tissue samples, collected from animals at the slaughterhouse. However, post-mortem analysis does not give the opportunity of monitoring the usage of antibiotics on the farm during the breeding of animals. In ante mortem drug analysis blood can be used as a diagnostic biological matrix; however, blood sampling is connected with certain disadvantages for the animals and the staff responsible for material collection. The post-mortem detection and presence of antibiotic residues in pork tissues above MRL values very often lead to the recall and destruction of significant quantities of meat, which may contribute to economic losses. Therefore, a strong need to find and implement new methods for ante-mortem detection of antibiotics in animals exists, which minimize interference in animal welfare. The results of preliminary studies demonstrate that oral fluid seems to be an effective tool for monitoring the reasonable treatment and residue avoidance. It offers a cost-effective approach for the screening of large populations of animals. The method of oral fluid collection with cotton rope usage allows for the rapid sampling of material. In case of positive oral fluid ante-mortem analysis results, the slaughtering of animals can be delayed, which can bring the avoidance of costs connected with the non-compliant pig meat destruction.

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42

Shah, Furqan A., Krisztina Ruscsák, and Anders Palmquist. "Mapping Bone Surface Composition Using Real-Time Surface Tracked Micro-Raman Spectroscopy." Cells Tissues Organs 209, no. 4-6 (2020): 266–75. http://dx.doi.org/10.1159/000511079.

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The surface of bone tells a story – one that is worth a thousand words – of how it is built and how it is repaired. Chemical (i.e., composition) and physical (i.e., morphology) characteristics of the bone surface are analogous to a historical record of osteogenesis and provide key insights into bone quality. Analysis of bone chemistry is of particular relevance to the advancement of human health, cell biology, anthropology/archaeology, and biomedical engineering. Although scanning electron microscopy remains a popular and versatile technique to image bone across multiple length scales, limited chemical information can be obtained. Micro-Raman spectroscopy is a valuable tool for nondestructive chemical/compositional analysis of bone. However, signal integrity losses occur frequently during wide-field mapping of non-planar surfaces. Samples for conventional Raman imaging are, therefore, rendered planar through polishing or sectioning to ensure uniform signal quality. Here, we demonstrate ν1 PO43- and ν1 CO32- peak intensity losses where the sample surface and the plane of focus are offset by over 1–2 μm when underfocused and 2–3 μm when overfocused at 0.5–1 s integration time (15 mW, 633 nm laser). A technique is described for mapping the composition of the inherently irregular/non-planar surface of bone. The challenge posed by the native topology characteristic of this unique biological system is circumvented via real-time focus-tracking based on laser focus optimization by continuous closed-loop feedback. At the surface of deproteinized and decellularized/defatted sheep tibial cortical bone, regions of interest up to 1 mm2 were scanned at micrometer and submicrometer resolution. Despite surface height deviations exceeding 100 μm, it is possible to seamlessly probe local gradients in organic and inorganic constituents of the extracellular matrix as markers of bone metabolism and bone turnover, blood vessels and osteocyte lacunae, and the rope-like mineralized bundles that comprise the mineral phase at the bone surface.

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Kelly, Elizabeth A., and Nizar N. Jarjour. "Role of matrix metalloproteinases in asthma." Current Opinion in Pulmonary Medicine 9, no. 1 (January 2003): 28–33. http://dx.doi.org/10.1097/00063198-200301000-00005.

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Tetley, T. D. "Matrix metalloproteinases: a role in emphysema?" Thorax 52, no. 6 (June 1, 1997): 495. http://dx.doi.org/10.1136/thx.52.6.495.

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HINSBERGH, VICTOR W. M., ANNEMIE COLLEN, and PIETER KOOLWIJK. "Role of Fibrin Matrix in Angiogenesis." Annals of the New York Academy of Sciences 936, no. 1 (January 25, 2006): 426–37. http://dx.doi.org/10.1111/j.1749-6632.2001.tb03526.x.

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Golub, Ellis E. "Role of matrix vesicles in biomineralization." Biochimica et Biophysica Acta (BBA) - General Subjects 1790, no. 12 (December 2009): 1592–98. http://dx.doi.org/10.1016/j.bbagen.2009.09.006.

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Omori, Toshihiro. "Role of Energy Materials." Materia Japan 56, no. 3 (2017): 129. http://dx.doi.org/10.2320/materia.56.129.

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Hu, Xiang Hui, Sheng Guo Cheng, and Zhi Wei Yu. "Influence of Matric Suction on the Stability of Unsaturated Slope." Advanced Materials Research 594-597 (November 2012): 18–22. http://dx.doi.org/10.4028/www.scientific.net/amr.594-597.18.

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Matric suction plays a significant role in the unsaturated slope stability and receives a rising interest in how matric suction affects the unsaturated slope stability. According to the shear strength theories and soil-water characteristic curve of unsaturated soils，matric suction parameters were proposed to study the influences of matric suction on unsaturated slope stability by applying in strain-softening constitutive model and using catastrophe theory as a tool. The results show that the unsaturated slope safety factor depends on the stiffness ratio，the softening coefficient，the suction sensitive factor and the relative displacement ratio. However，when the system reaches the limit equilibrium circumstance，the fundamental factors particularly affecting the unsaturated slope stability are the stiffness ratio of two media and the softening coefficient of the sliding surface，and the further trend between matrix suction and unsaturated slope stability is the same as the changes of the suction impact factor.

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Little, C. "I-15 UPDATE ON MATRIX DEGRADATION: ROLE OF MATRIX DEGRADATION IN OA." Osteoarthritis and Cartilage 17 (September 2009): S6. http://dx.doi.org/10.1016/s1063-4584(09)60020-0.

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Stetler‐Stevenson, William G., Lance A. Liotta, and David E. Kleiner. "Extracellular matrix 6: Role of matrix metalloproteinases in tumor invasion and metastasis." FASEB Journal 7, no. 15 (December 1993): 1434–41. http://dx.doi.org/10.1096/fasebj.7.15.8262328.

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Journal articles on the topic 'ROPE matrix'

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