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Journal articles on the topic 'Reversible drive'

Author: Grafiati

Published: 5 June 2025

Last updated: 16 July 2025

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1

Radionov, Andrey A., Alexander S. Maklakov, and Vadim R. Gasiyarov. "Reactive Power Control of Reversible Electric Drives by Using Industrial Smart Grid Technology." Applied Mechanics and Materials 789-790 (September 2015): 1011–15. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.1011.

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This paper addresses the issue of associating a concept of industrial smart grid technology for a reactive power control of reversible electric drives. The research focus was concerned with the theoretical analysis of active, reactive and apparent power by the main reversible electric drive of plate mill rolling stand. Typical features of power electric equipment of modern reversible electric drives allow us to develop the reactive power control. The reactive power control can be created out by using of back to back converters which connect the reversible electric drive with the supply mains. Experiments in the plate mill were carried at the difficult-to-form steel grade in the range of roughing and finish rolling. It was established that the reactive power generation can be used in the range of the roughing. The huge prospects of the reversible electric drives integration based on back to back converters in Industrial Smart Grid have been determined due to the fact that to control of reactive and apparent power flows.

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2

Mclaren, S. G. "A Reversible Torque Drive Using A Cross-Field Motor and A Semiconductor Converter." International Journal of Electrical Engineering & Education 29, no. 1 (1992): 71–80. http://dx.doi.org/10.1177/002072099202900108.

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A reversible torque drive using a cross-field motor and a semiconductor converter This paper deals with a simple reversible torque drive using a Cross-Field motor and single power semi-conductor converter without armature or field reversing switches.

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3

Jacobina, C. B., R. L. de Araujo Ribeiro, A. M. N. Lima, and E. R. C. da Silva. "Fault-tolerant reversible ac motor drive system." IEEE Transactions on Industry Applications 39, no. 4 (2003): 1077–84. http://dx.doi.org/10.1109/tia.2003.814567.

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4

Chepkunov, R. A. "REVERSIBLE ASYNCHRONOUS ELECTRIC DRIVE WITH REACTIVE POWER CONTROL." Tekhnichna Elektrodynamika 2024, no. 1 (2024): 46–52. http://dx.doi.org/10.15407/techned2024.01.046.

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The features of current reverse in a reversible electric drive with reactive power control are considered. It is shown that the reverse is fast-acting, providing fast-action in the entire range of speed control, including zero speed. This electric drive can be supplied in place of a DC electric drive. References 7, figures 4.

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5

Liao, Yi. "Reversible photo control of proton chemistry." Physical Chemistry Chemical Physics 24, no. 7 (2022): 4116–24. http://dx.doi.org/10.1039/d1cp05627a.

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6

Ganiev, Rishat. "Two-way conductivity converters in the technology of tire cord rubberization." E3S Web of Conferences 220 (2020): 01069. http://dx.doi.org/10.1051/e3sconf/202022001069.

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The article deals with the problems of increasing the multi-engine electric drive energy efficiency on the example of the cropped cord production line in manufacture of tires. There are requirements for line electric drives that can have an impact both each other and the overall power grid in the mode of technological braking, as well as the requirements for the availability of protection functions and mutual coordination with the mains supply. To solve this problem, options have been developed to build reversible frequency converters on fully controlled (locked) keys as part of frequency-regulated technological electric drives in the production of cord for car tires with energy recovery. The construction of the reversible frequency converter with the use of autonomous voltage inverters, as well as the results of computer simulations in the reactor and non-reactor circuits of reversible frequency converters in the composition of multi-motor electric drives with a total DC bus are shown.

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7

McKinnon, Charles N., Danamichele Brennen, and Christopher E. Brennen. "Hydraulic Analysis of a Reversible Fluid Coupling." Journal of Fluids Engineering 123, no. 2 (2000): 249–55. http://dx.doi.org/10.1115/1.1350819.

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This paper presents a hydraulic analysis of a fluid coupling which is designed to operate either in a forward or reverse mode when a set of turning vanes are respectively withdrawn or inserted into the flow between the driving and driven rotors. The flow path is subdivided into a set of streamtubes and an iterative method is used to adjust the cross-sectional areas of these streamtubes in order to satisfy radial equilibrium. Though the analysis requires the estimation of a number of loss coefficients, it predicts coupling performance data which are in good agreement with that measured in NAVSSES tests of a large reversible coupling intended for use in a ship drive train.

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8

Prediger, V., J. Hoffmann, V. Trentmann, et al. "Automatic Control of Hybrid Transmission of an All-Wheel Drive Vehicle." Izvestiya MGTU MAMI 3, no. 1 (2009): 60–67. http://dx.doi.org/10.17816/2074-0530-69894.

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The present article describes the bases of automatic control by an internal combustion engine and reversible hybrid drive under work in mode of traction electric motor and generator of the all-wheel drive, multi-purpose car with parallel hybrid drive on an example of a UAZ 3153 car equipped with hybrid power instalation.

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9

Ajami, Dariush, and Julius Rebek. "Longer Guests Drive the Reversible Assembly of Hyperextended Capsules." Angewandte Chemie International Edition 46, no. 48 (2007): 9283–86. http://dx.doi.org/10.1002/anie.200702245.

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10

Ajami, Dariush, and Julius Rebek. "Longer Guests Drive the Reversible Assembly of Hyperextended Capsules." Angewandte Chemie 119, no. 48 (2007): 9443–46. http://dx.doi.org/10.1002/ange.200702245.

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11

Mousavi, S. Masoumeh, Iryna Kasianiuk, Denis Kasyanyuk, et al. "Clustering of Janus particles in an optical potential driven by hydrodynamic fluxes." Soft Matter 15, no. 28 (2019): 5748–59. http://dx.doi.org/10.1039/c8sm02282h.

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12

Du, Rui, Zhiqi Liu, Lei Ge, Jinyuan Cui, and Lei He. "A New Electrohydraulic Hybrid Energy-Saving System Used on the Reversible Rolling Mills." Advances in Materials Science and Engineering 2023 (February 9, 2023): 1–17. http://dx.doi.org/10.1155/2023/3316392.

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In the face of the global energy crisis, the use of hybrid technology is an important way to achieve efficient energy storage and utilization. Hybrid systems have been successfully applied to automobiles and construction machinery, but no research study has been conducted on the design and application of energy recovery systems for reversible rolling mills. This article proposes a new type of noncoaxial parallel electrohydraulic hybrid drive system configuration for reversible rolling mills to save energy. It is proposed to collect the braking energy of the previous pass of the reversible rolling mill roll and the surplus power of the original primary drive motor and then start or accelerate the process for the next roll pass. A test experiment was established and the energy-saving efficiency of the proposed system was verified. By rolling 14 passes, 255.892 kJ of energy can be recovered. The overall energy efficiency rate is around 71.547%. The system will significantly promote energy saving, low carbon, green, and other aspects of the reversible rolling mills.

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13

MOKROVA, Natalia, Viktor ARTEMYEV, and Anar HAJIYEV. "DESIGN OF REVERSIBLE THYRISTOR FEED DRIVE WITH PROPORTIONAL-INTEGRAL CONTROLLERS." Machine Science Journal 4, no. 2 (2024): 13–28. https://doi.org/10.61413/iynu7656.

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This paper presents a detailed analysis of a reversible thyristor feed drive for industrial metalworking systems, oriented for application in machine tools with position or contour numerical control, as well as in copying and milling machines. The drive under consideration is based on a three-phase zeroreversing scheme, providing a wide dynamic speed control range of the executive motor speed not less than 10000 revolutions, which allows effectively adapting to changes in technological parameters and various production modes. The application of proportional-integral speed and current regulators in the control loop contributes to the accuracy, stability and speed of the system under various mechanical loads and transient modes. The paper offers a comprehensive consideration of structural features, principles of operation and performance characteristics of reversible thyristor feed drive with PI controllers. The obtained results allow to optimize the drive operation in conditions of high precision machining, to expand the functional capabilities of the machine tool equipment, to reduce the influence of external disturbances and to increase the reliability of the industrial system as a whole. The basis of the hardware configuration of the drive consists of thyristor block (BT), control unit (CU), stabilized power supply of control circuits, as well as synchronization transformer, interacting by means of functional blocks: regulator block (RB), phase shifting device (PSD), logic block (BL), stabilized power supply block (SPB) and correction block (BC). The described functional structure simplifies the procedure of initial setting of the drive, tightening the interaction of the system elements and reducing the risk of uneven operation modes. It is possible to use both conventional electric motors with normal inertia-torque ratio and motors with increased torque overload capacity or reduced inertia. An important feature of the proposed solution is a built-in system of protection of power keys against short circuits by using high-speed maximum protection automatics (MPA), which contributes to increased reliability of operation and reduces the risk of failure of expensive elements. Additional stability of thyristor switching process is achieved by using transistor electronic keys, whose operation is synchronized with the supply network due to a special transformer winding, providing fast and accurate transition between positive and negative half-periods.

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14

Niu, Wuqi Amy, Sylvia L. Rivera, M. Sloan Siegrist, and Maria M. Santore. "Depletion forces drive reversible capture of live bacteria on non-adhesive surfaces." Soft Matter 17, no. 35 (2021): 8185–94. http://dx.doi.org/10.1039/d1sm00631b.

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15

Ren, Qiaoli, Gerile Aodeng, Lu Ga, and Jun Ai. "Light drive reversible color switching for rewritable media and encoding." Materials & Design 211 (December 2021): 110132. http://dx.doi.org/10.1016/j.matdes.2021.110132.

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16

Lazarev, I. V., and M. V. Zhavner. "Research of a non-reversible step drive with energy recovery." Izvestiâ vysših učebnyh zavedenij. Priborostroenie 63, no. 4 (2020): 338–44. http://dx.doi.org/10.17586/0021-3454-2020-63-4-338-344.

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17

Kosucki, Andrzej, Łukasz Stawiński, Adrian Morawiec, and Jarosław Goszczak. "Electro-Hydraulic Drive of the Variable Ratio Lifting Device under Active Load." Strojniški vestnik – Journal of Mechanical Engineering, no. 11 (November 23, 2021): 599–610. http://dx.doi.org/10.5545/sv-jme.2021.7320.

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Hydraulic systems fed by fixed displacement pumps driven by frequency-controlled electric motors can replace conventional throttling systems due to their ability to control the speed of hydraulic cylinders regardless of the value and direction of the load. These systems can improve the energy efficiency of the drive or even provide the possibility of energy recuperation during lowering. This paper presents experimental studies of the new drive system with volumetric control of the speed of the lifted/lowered payload using the example of a scissor lift. The system uses a reversible gear pump driven by an asynchronous motor fed by a frequency inverter operating in field-oriented control mode. Comparative studies of the mapping of the assumed speed of the hydraulic cylinder and platform are presented, as well as studies of the influence of the load change on the speed and positioning of the mechanism driven by the open-loop controlled system.

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18

TSUCHIDA, Nuio, Hirokazu MAKIUCHI, Jun OHOSAWA, and Asao OHOHASHI. "Studies on reversible drive ion drag micro-actuator with subsidiary electrodes." IEEJ Transactions on Electronics, Information and Systems 119, no. 8-9 (1999): 985–90. http://dx.doi.org/10.1541/ieejeiss1987.119.8-9_985.

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19

Li, Sheng, Xiaowen Chen, Jiahui Wang, et al. "Somatic Mutations Drive Specific, but Reversible, Epigenetic Heterogeneity States in AML." Cancer Discovery 10, no. 12 (2020): 1934–49. http://dx.doi.org/10.1158/2159-8290.cd-19-0897.

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20

Zhao, Bing. "Drive Circuit Design of H-Bridge Permanent-Magnet DC Moment Motor Based on HIP4081 Chip." Advanced Materials Research 986-987 (July 2014): 1086–89. http://dx.doi.org/10.4028/www.scientific.net/amr.986-987.1086.

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In order to achieve reliable drive for Permanent-magnet DC moment motor and high-precision control, we use special chips designed HIP4081 H-bridge PWM motor drive circuit bipolar reversible, with DSP as the controller completed a two-way rotation and permanent magnet DC motor speed control . Experiments show that the circuit is safe, reliable, environmental adaptability, good thermal conductivity, high efficiency, applicable to Permanent-magnet DC moment motor powered a variety of control systems.

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21

Leftwich, Philip T., Matthew P. Edgington, Tim Harvey-Samuel, Leonela Z. Carabajal Paladino, Victoria C. Norman, and Luke Alphey. "Recent advances in threshold-dependent gene drives for mosquitoes." Biochemical Society Transactions 46, no. 5 (2018): 1203–12. http://dx.doi.org/10.1042/bst20180076.

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Mosquito-borne diseases, such as malaria, dengue and chikungunya, cause morbidity and mortality around the world. Recent advances in gene drives have produced control methods that could theoretically modify all populations of a disease vector, from a single release, making whole species less able to transmit pathogens. This ability has caused both excitement, at the prospect of global eradication of mosquito-borne diseases, and concern around safeguards. Drive mechanisms that require individuals to be released at high frequency before genes will spread can therefore be desirable as they are potentially localised and reversible. These include underdominance-based strategies and use of the reproductive parasite Wolbachia. Here, we review recent advances in practical applications and mathematical analyses of these threshold-dependent gene drives with a focus on implementation in Aedes aegypti, highlighting their mechanisms and the role of fitness costs on introduction frequencies. Drawing on the parallels between these systems offers useful insights into practical, controlled application of localised drives, and allows us to assess the requirements needed for gene drive reversal.

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22

Tang, Yu Juan, and Jiong Wang. "An Action Reversible Mechanism with Piezoelectric Actuator." Applied Mechanics and Materials 105-107 (September 2011): 1727–30. http://dx.doi.org/10.4028/www.scientific.net/amm.105-107.1727.

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At present, the explosion isolator of the fuze safety system using stepping motor or based on the slider continuation move realized safe state restorability, but the former is restricted by the volume of stepping motor, however, the stepping motor is vulnerable to electromagnetic interference; the latter structure is complex, with several independent components, not compact and irreversible. In view of this, an action reversible mechanism based on piezoelectric actuator is proposed, realizing the fuze safety system reversibility. The principle of the piezoelectric actuator is described and the drive mechanism is designed. The feasibility is analysed. The study shows that the mechanism has the certain practical value for compact structure, small volume and reliable actuation.

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23

Reichhardt, C., and C. J. O. Reichhardt. "Reversible to irreversible transitions for cyclically driven particles on periodic obstacle arrays." Journal of Chemical Physics 156, no. 12 (2022): 124901. http://dx.doi.org/10.1063/5.0087916.

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We examine the collective dynamics of disks moving through a square array of obstacles under cyclic square wave driving. Below a critical density, we find that the system organizes into a reversible state in which the disks return to the same positions at the end of every drive cycle. Above this density, the dynamics are irreversible and the disks do not return to the same positions after each cycle. The critical density depends strongly on the angle θ between the driving direction and a symmetry axis of the obstacle array, with the highest critical densities appearing at commensurate angles such as θ = 0° and θ = 45° and the lowest critical densities falling at θ = arctan (0.618), the inverse of the golden ratio, where the flow is the most degenerate. As the density increases, the number of cycles required to reach a reversible state grows as a power law with an exponent near ν = 1.36, similar to what is found in periodically driven colloidal and superconducting vortex systems.

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24

Ionov, Pavel A., Petr V. Senin, Sergey V. Pyanzov, Aleksey V. Stolyarov, and Alexander M. Zemskov. "Developing a Stand for Evaluating Technical Condition of Volumetric Hydraulic Drives with a Hydraulic Loading Device." Engineering Technologies and Systems 29, no. 4 (2019): 529–45. http://dx.doi.org/10.15507/2658-4123.029.201904.529-545.

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Introduction. The article deals with the development of a device for evaluating technical condition on of volumetric hydraulic drives made in Russia and abroad at repair and service centres. Materials and Methods. The study uses the statements of theoretical mechanics and hydrodynamics, the basic principles of mechanisms and machines production. For technical condition evaluating of volumetric hydraulic drives, the method of hydraulic loading of hydraulic motor was applied. Reliability of results was confirmed during experimental settings of the hydraulic loading device stand. Results. A stand design with the hydraulic loading device was developed and put into practice for new technical condition evaluating of volumetric hydraulic drives, made in Russia and abroad, at repair and service centres. A property of the stand is the use of the hydraulic loading method when the torque (braking) moment on the shaft of the tested hydraulic rotor is created using a hydraulic machine. The stand consists of data processing and measurement units. The data processing unit is based on a multifunctional data acquisition board connected with a personal computer. The structure of the data measurement unit includes a frequency converter connected to an electric motor, a drive shaft for connecting the shaft of the tested hydraulic pump; hydraulic system having a hydraulic tank; suction, control, drain, and discharge lines and reversible flow chokes installed in discharge lines and connected with the hydraulic pump and hydraulic rotor; loading device with the reversible hydraulic pump, drive shaft joined with the shaft of the tested hydraulic motor. Additionally, reversible throttle flow meters are connected via special ports and electric lines to the data acquisition board. The developed stand allows evaluating the technical condition of most widespread models of volumetric hydraulic drives used in modern agricultural and road construction equipment. The stand is characterized by good energy efficiency, simplicity of design, low costs, good technical characteristics that make it competitive. Discussion and Conclusion. The new stand design with the hydraulic loading device allows implementating of the dynamic testing methodology and guarantees high accuracy of evaluating the technical condition of the most widespread Russian and foreign volumetric hydraulic drives at repair and service centres. Further improvement of the evaluating the technical condition of volumetric hydraulic drives is related to the development of specialized software for processing and analysing test results in real-time.

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25

Broggi, Juli, Esa Hohtola, Kari Koivula, Seppo Rytkönen, and Jan-Åke Nilsson. "Prehatching temperatures drive inter-annual cohort differences in great tit metabolism." Oecologia 198, no. 3 (2022): 619–27. http://dx.doi.org/10.1007/s00442-022-05126-7.

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AbstractBasal metabolic rate (BMR) constitutes the lowest metabolic rate in a resting animal and is, therefore, considered to reflect the energetic cost of maintenance in endotherms. BMR is a reversible plastic trait that changes with environmental and ecological circumstances, albeit being heritable and susceptible to selection. Inter-individual variation within populations of small birds is substantial, and while many of the drivers of such variation have been identified, many remain unexplained. We studied winter BMR variation of juveniles over a 15-year period in a wild population of great tits Parus major at the northern border of their distribution. BMR during winter consistently changed between years, even after controlling for environmental factors, suggestive of a non-reversible developmental plasticity shaping the adult metabolic phenotype. BMR in cohorts of wintering great tits varied among winters as a response to minimum ambient temperatures experienced early in life, during the prehatching period. This developmental plasticity might be adaptive if temperatures experienced by growing embryos would metabolically prime them to an environment that they will likely encounter in future life. However, in line with a more unpredictable future climate, the risk of phenotype-environment mismatch is likely to lead to certain cohorts being poorly adapted to prevailing winter conditions, resulting in wider annual fluctuations in population size.

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26

Jacobs, Michael I., Edward R. Jira, and Charles M. Schroeder. "Understanding How Coacervates Drive Reversible Small Molecule Reactions to Promote Molecular Complexity." Langmuir 37, no. 49 (2021): 14323–35. http://dx.doi.org/10.1021/acs.langmuir.1c02231.

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27

Jacobina, Cursino Brandão, Euzeli Cipriano dos Santos, Nady Rocha, Bernard de Sá Gouveia, and Edison Roberto Cabral da Silva. "Reversible AC Drive Systems Based on Parallel AC–AC DC-Link Converters." IEEE Transactions on Industry Applications 46, no. 4 (2010): 1456–67. http://dx.doi.org/10.1109/tia.2010.2049724.

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28

Buchman, Anna B., Tobin Ivy, John M. Marshall, Omar S. Akbari, and Bruce A. Hay. "Engineered Reciprocal Chromosome Translocations Drive High Threshold, Reversible Population Replacement in Drosophila." ACS Synthetic Biology 7, no. 5 (2018): 1359–70. http://dx.doi.org/10.1021/acssynbio.7b00451.

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29

dos Santos, Euzeli C., Cursino B. Jacobina, Nady Rocha, and Edison R. C. da Silva. "Six-Phase Machine Drive System With Reversible Parallel AC–DC–AC Converters." IEEE Transactions on Industrial Electronics 58, no. 5 (2011): 2049–53. http://dx.doi.org/10.1109/tie.2010.2054057.

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30

Radionov, A. A., A. S. Maklakov, and E. A. Karyakina. "Energy-Saving Reversible Electric Drive Based on Active Front End Rectifier and Voltage Source Inverter." Applied Mechanics and Materials 698 (December 2014): 150–54. http://dx.doi.org/10.4028/www.scientific.net/amm.698.150.

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This paper addresses the issue of functional possibilities of reversible electric drive based on active front end rectifier and voltage source inverter from the point of view of energy saving. This paper will review all theoretical capabilities of reactive power compensation in the supply mains by the active front end rectifiers. The reactive power consumption or generation can be created out by using of active front end converters which connect the electric drive with supply mains. Active front end rectifiers can be actively used in operation of supply mains of enterprise as they are able to provide controlled power factor and bidirectional power flow. The studies by mathematical modeling in the Matlab/Simulink program were carried out. It was established that the controlling of power factor of active front end rectifier can be used for reactive power compensation in supply mains. The huge prospects of energy-saving reversible electric drive integration to the Smart Grid have been determined as it is able to provide high power and capabilities of the controlling reactive power flow by means of active front end rectifier. It can reduce a share of the consumption reactive power from a substation and to improve the power quality.

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31

Maywood, Elizabeth S., Thomas S. Elliott, Andrew P. Patton, et al. "Translational switching of Cry1 protein expression confers reversible control of circadian behavior in arrhythmic Cry-deficient mice." Proceedings of the National Academy of Sciences 115, no. 52 (2018): E12388—E12397. http://dx.doi.org/10.1073/pnas.1811438115.

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The suprachiasmatic nucleus (SCN) is the principal circadian clock of mammals, coordinating daily rhythms of physiology and behavior. Circadian timing pivots around self-sustaining transcriptional–translational negative feedback loops (TTFLs), whereby CLOCK and BMAL1 drive the expression of the negative regulators Period and Cryptochrome (Cry). Global deletion of Cry1 and Cry2 disables the TTFL, resulting in arrhythmicity in downstream behaviors. We used this highly tractable biology to further develop genetic code expansion (GCE) as a translational switch to achieve reversible control of a biologically relevant protein, Cry1, in the SCN. This employed an orthogonal aminoacyl-tRNA synthetase/tRNACUA pair delivered to the SCN by adeno-associated virus (AAV) vectors, allowing incorporation of a noncanonical amino acid (ncAA) into AAV-encoded Cry1 protein carrying an ectopic amber stop codon. Thus, translational readthrough and Cry1 expression were conditional on the supply of ncAA via culture medium or drinking water and were restricted to neurons by synapsin-dependent expression of aminoacyl tRNA-synthetase. Activation of Cry1 translation by ncAA in neurons of arrhythmic Cry-null SCN slices immediately and dose-dependently initiated TTFL circadian rhythms, which dissipated rapidly after ncAA withdrawal. Moreover, genetic activation of the TTFL in SCN neurons rapidly and reversibly initiated circadian behavior in otherwise arrhythmic Cry-null mice, with rhythm amplitude being determined by the number of transduced SCN neurons. Thus, Cry1 does not specify the development of circadian circuitry and competence but is essential for its labile and rapidly reversible activation. This demonstrates reversible control of mammalian behavior using GCE-based translational switching, a method of potentially broad neurobiological interest.

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Morris, Richard J., and Mark Blyth. "How water flow, geometry, and material properties drive plant movements." Journal of Experimental Botany 70, no. 14 (2019): 3549–60. http://dx.doi.org/10.1093/jxb/erz167.

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Abstract Plants are dynamic. They adjust their shape for feeding, defence, and reproduction. Such plant movements are critical for their survival. We present selected examples covering a range of movements from single cell to tissue level and over a range of time scales. We focus on reversible turgor-driven shape changes. Recent insights into the mechanisms of stomata, bladderwort, the waterwheel, and the Venus flytrap are presented. The underlying physical principles (turgor, osmosis, membrane permeability, wall stress, snap buckling, and elastic instability) are highlighted, and advances in our understanding of these processes are summarized.

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33

Shepperson, Andrea. "The Digital Aesthetic Test Drive." Primary Dental Journal 12, no. 2 (2023): 46–56. http://dx.doi.org/10.1177/20501684231174494.

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The burgeoning public interest in techniques to enhance a smile has led to demand on clinicians that require important steps in the pre-treatment approval process. Digital dentistry provides a new level of planning and visualisation, improving clinical risk assessment and patient engagement. Dentists must acquire a sound understanding of aesthetic design parameters, including physiologic limitations, and must match patient expectations with clinical reality. Digital design offers flexibility not obtainable with the conventional analogue wax up. Multiple versions of a design can be viewed in a 2D or 3D simulation and accommodated efficiently in CAD software, with 3D printed models generated from each design. The ability to use a test drive or mock-up based on a 3D digital analysis and design, has created a new standard of care for treatment planning, providing an accurate and reversible preview before any definitive dentistry is done. It also places the responsibility for understanding biologic limitations of care on the general dentist, with the risk that digital planning may over-promise if not matched with underlying hard and soft tissue conditions. It improves interdisciplinary and laboratory communication and increases the predictability of the proposed treatment. The result is greater patient satisfaction and an improved informed consent process.

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34

Patil, Mahadev S., S. P. Patil, and Devendra N. Kyatanavar. "Reversible DC Drive using MOSFET Chopper – A Laboratory Model Development for Undergraduate Students." IETE Journal of Education 50, no. 2 (2009): 65–72. http://dx.doi.org/10.1080/09747338.2009.10876055.

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35

SHIMAZU, Akio, Junya OKAWA, Kenichi NUMASAKI, Takahiro KATO, Haruhisa UCHIDA, and Yoshitake NISHI. "421 Reversible Motion of Drive Control of Hydrogen Storage Alloy Mover Film Device." Proceedings of the Materials and processing conference 2009.17 (2009): _421–1_—_421–2_. http://dx.doi.org/10.1299/jsmemp.2009.17._421-1_.

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36

Chappell, Mark A., Lesley F. Miller, and Cynthia L. Price. "Reversible exchange of stable nitroxyl radicals on nanosilver particles." Environmental Chemistry 12, no. 2 (2015): 198. http://dx.doi.org/10.1071/en14093.

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Environmental context Nanometre-sized silver particles promote unique chemical reactions on their surface. This work examines the ability of silver nanoparticles to collect and store unpaired electrons, called radicals, on their surface. This capability by silver nanoparticles could potentially serve to drive degradation reactions in the environment. Abstract Radicals drive important chemical reactions in the environment. These unpaired electron species can be generated by energetic inputs, such as electromagnetic radiation, or from ultrasonication processes, whereby oxygen radicals are generated in aqueous solution through a cavitation mechanism. Previous evidence has demonstrated the potential for radicals to be stored on the surface of metallic gold nanoparticles, thus suggesting a potential transference of radical species from the nanoparticle surface for catalytic reactions, particularly during preparations of nanoparticle suspensions through ultrasonication. This work investigates the potential for the nanosilver (nAg) particles to similarly scavenge radicals from solution. nAg suspensions were reacted with 0.3-mM solutions containing the stable nitroxy radicals 2,2,6,6-tetramethyl-1-piperidinyloxy (TEMPO), 4-oxo-2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPONE) and 4-amino-2,2,6,6-tetramethylpiperidino-1-oxyl (TEMPAMINE) analysed by quantitative electron spin resonance (ESR) spectroscopy. In ambient air, the addition of a nAg suspension to the 0.3-mM solutions reduced the integrated ESR intensity of the stable radicals by 50–93% depending on radical species and nAg concentration, which we attributed to the sorption of the radicals onto the nAg surface. In separate experiments, the ESR intensities were further decreased under an Ar atmosphere, suggesting potential competition from ambient OH• to the sorption of the stable radicals. To verify this, we observed substantial increases in the integrated ESR intensity when the systems previously equilibrated under Ar atmosphere were exposed to ambient air. These results demonstrated that nAg scavenged the stable radicals from solution and were exchangeable from the metallic conduction band with OH•. Our work represents the first evidence for this mechanism to be demonstrated for nAg.

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Kumar, Ganisetti Vijay, Min-Ze Lu, and Chang-Ming Liaw. "A Highly-efficiency Position Sensorless Electric Vehicle Synchronous Reluctance Motor Drive." Journal of Energy and Power Technology 03, no. 03 (2021): 1. http://dx.doi.org/10.21926/jept.2103037.

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The development of high-efficiency motor drives for various applications is important in the industry 4.0 era, especially for their extensive application to electric vehicles (EVs). In this study, a position sensorless EV synchronous reluctance motor (SynRM) drive has been developed, which exhibits good driving performance and efficiency over a wide speed and load range. To solve the key problems popularly encountered in the existing approaches, the high-frequency injection (HFI) scheme based on q-axis injection has been proposed. In addition, the changed-frequency injection has been adopted considering the effects of speed/load dependent slotting ripple current. Robust observed speed and position controllers have been added to enhance the sensorless control performance. For the SynRM basic driving control scheme, robust current control and adaptive commutation with minimized motor losses have been achieved that yield satisfactory driving performance up to the rated speed and load. Good EV driving performance has been demonstrated experimentally, including starting, dynamic, acceleration/deceleration, and reversible operations. In addition, the steady-state characteristics have been assessed, and the high efficiencies have been observed to be comparable to the standard drive.

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Gała, Marek, Kazimierz Jagieła, Andrzej Jąderko, and Janusz Rak. "Integrated Multimotor Electrical DC Drive for Metallurgical Rolling Table." Acta Mechanica et Automatica 9, no. 2 (2015): 93–98. http://dx.doi.org/10.1515/ama-2015-0016.

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Abstract A drive system of a section of a metallurgical rolling table consisting of six dc motors, 2220 amperes of total current, fed from a single ABB reversible thyristor converter has been described in this paper. Autonomous excitation circuits of the motors are fed from independent thyristor converters working in the so called MULTIFEX system linked with a supervisory high power converter. There are presented schemes of the DSL communication realized by FEX excitation cards of the motors using the SDSC card of the DCS-800-S02 converter and logic control system based on a PLC controller. The parameterization of the DCS-800 converter and the DCF 803 excitation systems was conducted using the DriveWindow software tool. Significant waveforms of voltages, currents and the estimated motor velocity are described and presented for the idle run as well as during transporting sheets discharged from a pusher furnace.

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39

Akbari, Omar S., Kelly D. Matzen, John M. Marshall, Haixia Huang, Catherine M. Ward, and Bruce A. Hay. "A Synthetic Gene Drive System for Local, Reversible Modification and Suppression of Insect Populations." Current Biology 23, no. 8 (2013): 671–77. http://dx.doi.org/10.1016/j.cub.2013.02.059.

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Zakharov, Pavel, Nikita Gudimchuk, Vladimir Voevodin, Alexander Tikhonravov, Fazly I. Ataullakhanov, and Ekaterina L. Grishchuk. "Multiple Reversible Molecular Events at the Microtubule Tip Drive the Age-Dependent Microtubule Catastrophes." Biophysical Journal 108, no. 2 (2015): 509a. http://dx.doi.org/10.1016/j.bpj.2014.11.2786.

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Tomishige, Michio, and Ronald D. Vale. "Controlling Kinesin by Reversible Disulfide Cross-Linking." Journal of Cell Biology 151, no. 5 (2000): 1081–92. http://dx.doi.org/10.1083/jcb.151.5.1081.

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Conventional kinesin, a dimeric molecular motor, uses ATP-dependent conformational changes to move unidirectionally along a row of tubulin subunits on a microtubule. Two models have been advanced for the major structural change underlying kinesin motility: the first involves an unzippering/zippering of a small peptide (neck linker) from the motor catalytic core and the second proposes an unwinding/rewinding of the adjacent coiled-coil (neck coiled-coil). Here, we have tested these models using disulfide cross-linking of cysteines engineered into recombinant kinesin motors. When the neck linker motion was prevented by cross-linking, kinesin ceased unidirectional movement and only showed brief one-dimensional diffusion along microtubules. Motility fully recovered upon adding reducing agents to reverse the cross-link. When the neck linker motion was partially restrained, single kinesin motors showed biased diffusion towards the microtubule plus end but could not move effectively against a load imposed by an optical trap. Thus, partial movement of the neck linker suffices for directionality but not for normal processivity or force generation. In contrast, preventing neck coiled-coil unwinding by disulfide cross-linking had relatively little effect on motor activity, although the average run length of single kinesin molecules decreased by 30–50%. These studies indicate that conformational changes in the neck linker, not in the neck coiled-coil, drive processive movement by the kinesin motor.

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42

Gurskyi, Volodymyr, Vitaliy Korendiy, Pavlo Krot, and Oleksandr Dyshev. "Determination of kinematic and dynamic characteristics of a reversible vibratory conveyor with an electromagnetic drive." Vibroengineering Procedia 55 (September 27, 2024): 138–44. http://dx.doi.org/10.21595/vp.2024.24403.

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The paper considers the design parameters that must be provided during the practical implementation of small-sized reversible vibratory conveyors with an electromagnetic drive. The proposed conveyor is developed on the basis of a classical two-mass oscillatory system. Two oscillating masses are connected by symmetrically assembled round-shaped rods. In order to avoid angular (torsional) oscillations of the vibratory conveyor, the geometrical centers of mass and stiffness of the spring system are aligned at the same point. The analysis of kinematic characteristics is performed by means of numerical solving of the system of nonlinear Lagrange-Maxwell differential equations. The influence of the phase shift angle between the electromagnetic excitation of horizontal and vertical oscillations on the trajectories of the mass center of the conveying member is analyzed. The first two frequencies and forms of natural oscillations of the vibratory conveyor are determined for estimating its dynamic characteristics. The novelty of this study lies in the development of a new design of a vibratory conveyor with a controllable independent electromagnetic drive that provides the conveying reversibility and efficiency.

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Crow, Allister, Nicholas P. Greene, Elise Kaplan, and Vassilis Koronakis. "Structure and mechanotransmission mechanism of the MacB ABC transporter superfamily." Proceedings of the National Academy of Sciences 114, no. 47 (2017): 12572–77. http://dx.doi.org/10.1073/pnas.1712153114.

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MacB is an ABC transporter that collaborates with the MacA adaptor protein and TolC exit duct to drive efflux of antibiotics and enterotoxin STII out of the bacterial cell. Here we present the structure of ATP-bound MacB and reveal precise molecular details of its mechanism. The MacB transmembrane domain lacks a central cavity through which substrates could be passed, but instead conveys conformational changes from one side of the membrane to the other, a process we term mechanotransmission. Comparison of ATP-bound and nucleotide-free states reveals how reversible dimerization of the nucleotide binding domains drives opening and closing of the MacB periplasmic domains via concerted movements of the second transmembrane segment and major coupling helix. We propose that the assembled tripartite pump acts as a molecular bellows to propel substrates through the TolC exit duct, driven by MacB mechanotransmission. Homologs of MacB that do not form tripartite pumps, but share structural features underpinning mechanotransmission, include the LolCDE lipoprotein trafficking complex and FtsEX cell division signaling protein. The MacB architecture serves as the blueprint for understanding the structure and mechanism of an entire ABC transporter superfamily and the many diverse functions it supports.

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Pirozhenko, Andrii, Yevhenii Modlo, Ruslan Shaida, Viktor Batarieiev, Mykola Zhukov, and Mykhailo Drukker. "Principle of Organization for Laboratory Stand of the Electric Drive with a Real Regulatory System No Time Scaling." SHS Web of Conferences 100 (2021): 06002. http://dx.doi.org/10.1051/shsconf/202110006002.

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The existing practical training of specialists in the field of the electric drive is recognized as insufficient, not allowing them to conduct independently a complex of adjustment works or works on elimination of refusals. All known virtual methods of research of electric drives are scaled in time therefore at the trained skills on use of the measuring and registering devices during the work on real installation don't develop, and also skills on work with real knots of control systems for control of the set drive modes. We propose a stand consisting of a real system of regulation and the model of the power drive to work without time scale, thus significantly closer to the actual laboratory setting drive. The structure of the laboratory stand on the basis of the engine of a direct current of independent excitement with the reversible thyristor converter is in details considered. It is proved that an optimal algorithm for the simulation of three-phase bridge converter operating at anchor chain is an algorithm which rooms include a thyristor and of the remaining thyristors allows you to choose the design scheme and carry out the integration of equations describing electric processes in the circuit detect a change in state of the thyristors and the transition to other design scheme. Given the discrete model and considered design scheme of three-phase bridge Converter in a normal mode switching thyristors and emergency mode, if false turn on of the thyristor during commutation. Mathematical model of the device - the solution of differential equations by numerical integration of the Runge-Kutta. Proposed hardware mathematical model based on the family of microcomputer ARM СortexTM fourth generation.

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Hu, Kai-Wei, Yen-Yang Chen, and Chang-Ming Liaw. "A Reversible Position Sensorless Controlled Switched-Reluctance Motor Drive With Adaptive and Intuitive Commutation Tunings." IEEE Transactions on Power Electronics 30, no. 7 (2015): 3781–93. http://dx.doi.org/10.1109/tpel.2014.2342877.

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Mirčevski, S., T. Jakimov, and G. Dimirovski. "Modelling and Optimization of Speed Control of the Main Drive in a Reversible Rolling Mill." IFAC Proceedings Volumes 25, no. 8 (1992): 551–58. http://dx.doi.org/10.1016/s1474-6670(17)54109-9.

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47

Kollmannsberger, Philip, Cécile M. Bidan, John W. C. Dunlop, Peter Fratzl, and Viola Vogel. "Tensile forces drive a reversible fibroblast-to-myofibroblast transition during tissue growth in engineered clefts." Science Advances 4, no. 1 (2018): eaao4881. http://dx.doi.org/10.1126/sciadv.aao4881.

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PROF., GOPAL REDDY K. "PRODUCTION OF ELECTRICITY BY SOLAR STIRLING ENGINE." IJIERT - International Journal of Innovations in Engineering Research and Technology 4, no. 7 (2017): 12–15. https://doi.org/10.5281/zenodo.1459092.

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<strong>The Stirling engine is both practically and theoretically a significant device,its practical virtue is simple,reliable and safe. The engine operates on a closed thermodynamic cycle,which is reversible. Today Stirling cycle - based systems are in commercial use as a heat pump,cryogenic refrigeration and air liquefaction. As a prime mover,Stirling cycles remain the subject of research and development efforts. A number of attempts have been made to build and improve the performance of Stirling engines. For successful operation of engine system with good efficiency,a careful design of heat exchangers,proper selection of drive mechanism and engine configuration is essential. Our Discussion indicates that a Stirling cycle engine working with relatively low temperature with air of helium as working fluid is potentially attractive engines of the future,especially solar - powered low - temperature differential Stirling engines with vertical,double acting,and gamma configuration. It is pollution free engine and use of any type of fuel characteristics and it shows a greater potential over any other type of engine existing today. This paper represents adetailed review of the past efforts taken for the development of the Stirling cycle engine and techniques used for engine analysis.</strong> <strong>https://www.ijiert.org/paper-details?paper_id=141063</strong>

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Ledererova, Aneta, Lenka Dostalova, Veronika Kozlova, et al. "Hypermethylation of CD19 promoter enables antigen-negative escape to CART-19 in vivo and in vitro." Journal for ImmunoTherapy of Cancer 9, no. 8 (2021): e002352. http://dx.doi.org/10.1136/jitc-2021-002352.

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BackgroundAnti-CD19 chimeric antigen receptor T cells (CART-19) frequently induce remissions in hemato-oncological patients with recurred and/or refractory B-cell tumors. However, malignant cells sometimes escape the immunotherapeutic targeting by CD19 gene mutations, alternative splicing or lineage switch, commonly causing lack of CD19 expression on the surface of neoplastic cells. We assumed that, in addition to the known mechanisms, other means could act on CD19 to drive antigen-negative relapse.MethodsHerein, we studied the mechanism of antigen loss in an in vivo CD19-negative recurrence model of chronic lymphocytic leukemia (CLL) to CART-19, established using NOD-scid IL2Rgnull mice and HG3 cell line. We validated our findings in vitro in immortalized B-cell lines and primary CLL cells.ResultsIn our in vivo CLL recurrence model, up to 70% of CART-19-treated mice eventually recurred with CD19-negative disease weeks after initial positive response. We found that the lack of CD19 expression was caused by promoter DNA hypermethylation. Importantly, the expression loss was partially reversible by treatment with a demethylating agent. Moreover, this escape mechanism was common for 3 B-cell immortalized lines as well as primary CLL cells, as assessed by in vitro coculture experiments.ConclusionsEpigenetically driven antigen escape could represent a novel, yet at least partially reversible, means of CD19 loss to CART-19 in B-cell tumors.

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Montà-González, Giovanni, Ramón Martínez-Máñez, and Vicente Martí-Centelles. "Synthesis of a Pd2L4 Hydrazone Molecular Cage Through Multiple Reaction Pathways." International Journal of Molecular Sciences 25, no. 22 (2024): 11861. http://dx.doi.org/10.3390/ijms252211861.

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Molecular cages are preorganized molecules with a central cavity, typically formed through the reaction of their building blocks through chemical bonds. This requires, in most cases, forming and breaking reversible bonds during the cage formation reaction pathway for error correction to drive the reaction to the cage product. In this work, we focus on both Pd–ligand and hydrazone bonds implemented in the structure of a Pd2L4 hydrazone molecular cage. As the cage contains two different types of reversible bonds, we envisaged a cage formation comparative study by performing the synthesis of the cage through three different reaction pathways involving the formation of Pd–ligand bonds, hydrazone bonds, or a combination of both. The three reaction pathways produce the cage with yields ranging from 73% to 79%. Despite the complexity of the reaction, the cage is formed in a high yield, even for the reaction pathway that involves the formation of 16 bonds. This research paves the way for more sophisticated cage designs through complex reaction pathways.

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