Log in

Relevant bibliographies by topics / Mechanical stre / Journal articles

Journal articles on the topic 'Mechanical stre'

To see the other types of publications on this topic, follow the link: Mechanical stre.

Author: Grafiati

Published: 14 March 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Mechanical stre.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Ma, Rong, Anna V. Kellner, Victor Pui-Yan Ma, Hanquan Su, Brendan R. Deal, Joshua M. Brockman, and Khalid Salaita. "DNA probes that store mechanical information reveal transient piconewton forces applied by T cells." Proceedings of the National Academy of Sciences 116, no. 34 (August 7, 2019): 16949–54. http://dx.doi.org/10.1073/pnas.1904034116.

Full text

Abstract:

The advent of molecular tension probes for real-time mapping of piconewton forces in living systems has had a major impact on mechanobiology. For example, DNA-based tension probes have revealed roles for mechanics in platelet, B cell, T cell, and fibroblast function. Nonetheless, imaging short-lived forces transmitted by low-abundance receptors remains a challenge. This is a particular problem for mechanoimmunology where ligand–receptor bindings are short lived, and a few antigens are sufficient for cell triggering. Herein, we present a mechanoselection strategy that uses locking oligonucleotides to preferentially and irreversibly bind DNA probes that are mechanically strained over probes at rest. Thus, infrequent and short-lived mechanical events are tagged. This strategy allows for integration and storage of mechanical information into a map of molecular tension history. Upon addition of unlocking oligonucleotides that drive toehold-mediated strand displacement, the probes reset to the real-time state, thereby erasing stored mechanical information. As a proof of concept, we applied this strategy to study OT-1 T cells, revealing that the T cell receptor (TCR) mechanically samples antigens carrying single amino acid mutations. Such events are not detectable using conventional tension probes. Each mutant peptide ligand displayed a different level of mechanical sampling and spatial scanning by the TCR that strongly correlated with its functional potency. Finally, we show evidence that T cells transmit pN forces through the programmed cell death receptor-1 (PD1), a major target in cancer immunotherapy. We anticipate that mechanical information storage will be broadly useful in studying the mechanobiology of the immune system.

APA, Harvard, Vancouver, ISO, and other styles

2

Schmitt, Philip, Hannes Mehner, and Martin Hoffmann. "A Micromechanical Binary Counter with MEMS-Based Digital-to-Analog Converter." Proceedings 2, no. 13 (November 21, 2018): 807. http://dx.doi.org/10.3390/proceedings2130807.

Full text

Abstract:

Autonomous sensors are of interest in all cases where a continuous power source is not available or difficult to realize. Besides harvesting of electrical energy for a complex storage system, it is of interest to directly store an event in a non-electrical storage, but in a way that allows a later electrical read-out. Therefore, a miniaturized micromechanical binary counter is presented, which enables counting of threshold events, such as exceeding temperature limits or high mechanical shocks. An electro-mechanical digital-to-analog converter integrated in the binary counter is demonstrated as an option for monolithic electrical read-out of the mechanically stored information.

APA, Harvard, Vancouver, ISO, and other styles

3

Vinson, V. J. "Monitoring Cellular Mechanical Stress." Science's STKE 2007, no. 398 (July 31, 2007): tw287. http://dx.doi.org/10.1126/stke.3982007tw287.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Hughes-Fulford, M. "Signal Transduction and Mechanical Stress." Science Signaling 2004, no. 249 (August 31, 2004): re12. http://dx.doi.org/10.1126/stke.2492004re12.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Kosowatz, John. "Watts in Store." Mechanical Engineering 144, no. 2 (February 13, 2022): 31–35. http://dx.doi.org/10.1115/1.2022-mar1.

Full text

Abstract:

Abstract Lithium-ion batteries are reliable and getting progressively cheaper, but generally deliver full power capacity for no more than four hours. But for renewable energy to fully replace fossil fuels, energy storage systems must advance to provide long and longer-term storage capability, and then deliver it on demand. There are a variety of technologies being developed for long-term storage, generally recognized as six to 12 hours.

APA, Harvard, Vancouver, ISO, and other styles

6

Nielsen, Steen. "Economic assessment of sludge handling and environmental impact of sludge treatment in a reed bed system." Water Science and Technology 71, no. 9 (February 16, 2015): 1286–92. http://dx.doi.org/10.2166/wst.2015.072.

Full text

Abstract:

The effect on the environment of the establishment and operation of a sludge treatment reed bed system (STRB) is quite limited compared to mechanical sludge dewatering, with its accompanying use of energy and chemicals. The assessment presented here of the investment, operation and maintenance costs of a typical STRB, and of the related environmental impact, is based on the experiences gained from the operation of a large number of STRB in Denmark. There are differences in the environmental perspectives and costs involved in mechanical sludge dewatering and disposal on agricultural land compared to STRB. The two treatment methods were considered for comparison based on a treatment capacity of 550 tons of dry solids per year and with land application of the biosolids in Denmark. The initial capital cost for STRB is higher than a conventional mechanical system; however, an STRB would provide significant power and operating-cost savings, with a significant saving in the overall cost of the plant over 20–30 years. The assessment focuses on the use of chemicals, energy and greenhouse gas emissions and includes emptying, sludge residue quality and recycling. STRB with direct land application is the most cost-effective scenario and has the lowest environmental impact. A sludge strategy consisting of an STRB will be approximately DKK 536,894–647,636 cheaper per year than the option consisting of a new screw press or decanter.

APA, Harvard, Vancouver, ISO, and other styles

7

Wu, Yi, Chun Yang, Guang Xing Li, and Chun Mei Zhang. "Study on Mechanical Performances of Steel Truss Reinforced Concrete Transfer Beam." Advanced Materials Research 368-373 (October 2011): 299–302. http://dx.doi.org/10.4028/www.scientific.net/amr.368-373.299.

Full text

Abstract:

Experimental researches of one 1:6 scale steel truss reinforced concrete (STRC) transfer beam were carried out to investigate mechanical performances of a transfer beam under vertical loads in an actual tall building. The development of crack along the beam, strains of reinforcements and steel truss, and the force transference mechanism of the deep beam were analyzed. Experimental results showed that the bearing capacity and rigidity of the STRC transfer beam are significantly enhanced compared with normal RC transfer beam. The strut-and-tie force transference mechanism is formed in the STRC transfer beam and fully made use of by the STRC transfer beam. And results verified that the shortest and most direct force transference path can be achieved to transfer upper loads.

APA, Harvard, Vancouver, ISO, and other styles

8

Petersen, Jan, Sebastian Geier, Peter Wierach, and Martin Wiedemann. "In situ mechanical and electrical characterization of composite-integrated thin film-supercapacitors." MATEC Web of Conferences 188 (2018): 01028. http://dx.doi.org/10.1051/matecconf/201818801028.

Full text

Abstract:

Future transport systems will be powered more and more electrically. Generally the energy is stored in batteries. To reduce system weight and volume, multifunctional materials could be the answer. Therefore materials with the capability to store electric energy and to bear mechanical loads, need to be investigated to understand the effect of mechanical load on such structural integrated energy storage devices. In this work a thin film-supercapacitor is build up and integrated within a composite structure. The capacitor is developed to withstand the manufacturing process of a glass-fibre reinforced polymer and to carry mechanical loads, while simultaneously storing electrical energy. By using a supercapacitor housing, which is compatible to epoxy resin, a strong bonding is achieved, leading to a mechanical robust multifunctional composite. An electrolyte with large temperature window, low vapour pressure and the compatibility to a carbon based electrodes is chosen, to meet the requirement regarding the manufacturing process of the supercapacitor itself and the fibre reinforced composite. The composites with integrated thin film-supercapacitor as well as a set of reference samples are mechanically characterised in tensile and four-point bending test. In situ measurements are performed to investigate the influence of mechanical load on the electrical performance.

APA, Harvard, Vancouver, ISO, and other styles

9

Perkins, Michelle. "Minding the Nuclear Store." Mechanical Engineering 121, no. 03 (March 1, 1999): 68–69. http://dx.doi.org/10.1115/1.1999-mar-5.

Full text

Abstract:

A model from Los Alamos studies the deformation of a hypothetical nuclear device when it collides with a steel plate. This shows that simulations play a key role in establishing the reliability of nuclear weapons. The scientists at Los Alamos, Sandia, and Lawrence Livermore labs are turning to huge computers and advanced visualization software to test virtual models. Visualizing and analyzing the data generated by the computational models overwhelm traditional scientific visualization methods. Scientists at Sandia National Laboratories are using computer simulations to test whether the Navy’s W76 nuclear warhead could still function amid blasts of X-rays on a nuclear battlefield. The simulations try to mathematically predict what real X-rays would do as they go through the W76's electronic circuits. Real world tests are run with weaker X-rays and the results are compared with the computer simulations. Data from old underground nuclear tests are also used to validate the computer tests.

APA, Harvard, Vancouver, ISO, and other styles

10

Collin, E. "Mesoscopic quantum thermo-mechanics: A new frontier of experimental physics." AVS Quantum Science 4, no. 2 (June 2022): 020501. http://dx.doi.org/10.1116/5.0086059.

Full text

Abstract:

In the last decade, experimentalists have demonstrated their impressive ability to control mechanical modes within mesoscopic objects down to the quantum level: it is now possible to create mechanical Fock states, to entangle mechanical modes from distinct objects, and to store quantum information or transfer it from one quantum bit to another, among the many possibilities found in today's literature. Indeed, mechanics is quantum, very much like spins or electromagnetic degrees of freedom; and all of this is, in particular, referred to as a new engineering resource for quantum technologies. However, there is also much more beyond this utilitarian aspect: invoking the original discussions of Braginsky and Caves, where a quantum oscillator is thought of as a quantum detector for a classical field, namely, a gravitational wave, which is also a unique sensing capability for quantum fields. The subject of study is then the baths to which the mechanical mode is coupled to, let them be known or unknown in nature. This Perspective is about this new potentiality that addresses stochastic thermodynamics, potentially down to its quantum version, the search for a fundamental underlying (random) field postulated in recent theories that can be affiliated to the class of the wave-function collapse models, and more generally open questions of condensed matter like the actual nature of the elusive (and ubiquitous) two-level systems present within all mechanical objects. However, such research turns out to be much more demanding than the use of a few quantum mechanical modes: all the known baths have to be identified, experiments have to be conducted in-equilibrium, and the word “mechanics” needs to be justified by a real ability to move substantially the center-of-mass when a proper drive tone is applied to the system.

APA, Harvard, Vancouver, ISO, and other styles

11

Tomsick, Thomas A. "Editorial Comment—Mechanical Embolus Removal." Stroke 36, no. 7 (July 2005): 1439–40. http://dx.doi.org/10.1161/str.36.7.1439.

Full text

APA, Harvard, Vancouver, ISO, and other styles

12

Riddick, R. C., and A. D. Kuo. "Soft tissues store and return mechanical energy in human running." Journal of Biomechanics 49, no. 3 (February 2016): 436–41. http://dx.doi.org/10.1016/j.jbiomech.2016.01.001.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Yang, Chun, Ming Ji He, Jian Cai, Yan Sheng Huang, and Yi Wu. "Study on Mechanical Behaviors and Calculation of Shear Strength of Steel Truss Reinforced Concrete Deep Beams." Advanced Materials Research 243-249 (May 2011): 514–20. http://dx.doi.org/10.4028/www.scientific.net/amr.243-249.514.

Full text

Abstract:

Based on strut-and-tie model (STM) in deep beams, steel truss reinforced concrete (STRC) deep beam was developed. Experimental investigations of mechanical performances of STRC deep beams were carried out, and results show that STRC deep beam is of high ultimate bearing capacity, large rigidity and good ductility; Strut-and-tie force transference model is formed in STRC deep beams, and loads can be transferred in the shortest and direct way. Then Steel reinforced concrete (SRC) strut-and-tie model (SSTM) for determining the shear strength of STRC deep beams is proposed. The contribution of SRC diagonal strut, longitudinal reinforcements, stirrups and web reinforcements to the shear strength of STRC deep beams are determined with consideration of softened effects of concrete, and for safe consideration, superposition theory is employed for SRC struts. Computer programs are developed to calculate the shear strength of STRC deep beams and verified by experimental results.

APA, Harvard, Vancouver, ISO, and other styles

14

Quach, Thi Hai Yen, Abdelkibir Benelfellah, Benjamin Batiot, Damien Halm, Thomas Rogaume, Jocelyn Luche, and Denis Bertheau. "Determination of the tensile residual properties of a wound carbon/epoxy composite first exposed to fire." Journal of Composite Materials 51, no. 1 (July 28, 2016): 17–29. http://dx.doi.org/10.1177/0021998316637419.

Full text

Abstract:

The use of carbon fiber/epoxy matrix composite is widely developed to store hydrogen at high pressure because of its low weight and its good specific mechanical properties. In order to secure this type of storage, it is necessary to tackle the thermal degradation and the influence of a fire or a heating source on the residual mechanical behavior of such materials. In the present study, carbon/epoxy composite samples with different fiber orientations are considered. The thermal aggression (representative of a fire) is performed by using a cone calorimeter apparatus (ISO 5660). The fire exposure is stopped at different time in order to study the influence of the thermal energy (different heat fluxes and exposure durations) on the residual mechanical tensile properties. The results obtained show that the residue thickness (char) of the samples is proportional to the incident energy. Strength and stiffness reduction can be observed even without ignition (i.e ., without combustion flame) when the mechanical properties are controlled only by the resin (fiber perpendicular to the loading axis). When the fibers are mechanically loaded (quasi-isotropic samples or ± 45° samples), a very little strength decrease is observed before ignition and accelerated after ignition. A proportional relationship between the ultimate stress of the exposed sample and the non-charred thickness is also observed.

APA, Harvard, Vancouver, ISO, and other styles

15

Koene, Ansgar R., and Casper J. Erkelens. "Mechanical interdependence of version and vergence eye movements." Strabismus 11, no. 4 (January 2003): 221–27. http://dx.doi.org/10.1076/stra.11.4.221.24303.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Sim, K. S., and E. F. Ng. "Mechanical Design of Mini Automated Storage and Retrieval Warehouse System for Electronic Components." Applied Mechanics and Materials 575 (June 2014): 753–56. http://dx.doi.org/10.4028/www.scientific.net/amm.575.753.

Full text

Abstract:

Automated storage and retrieval warehouse systems (ASRS) have been implemented in industrial for few decades. This kind of combination of project has become common in current industry field. Refer to Pa. Pittsburgh, the enhancement of ASRS has helped to improve optimal stock capacity in limited space and minimize process flow time. The purpose of this project is to design a hardware prototype that can fulfill the concept of ASRS and can be implemented at electronic components store that requires store management. This is to improve the process in stock checking and also store or retrieve item. Furthermore, there have several major parts that can be considered to use this hardware such as method of store and retrieve, storage structure, movement of the machine and machine travelling system. The timing belt system is implemented on this hardware for performing linear X-Y-Z motions. Besides, the concept of pallets supported rack had been implemented in storage structure design. Last but not least, the concept of an automated guided machine travels to the desired location on rack is selected as a store and retrieve method for this hardware.

APA, Harvard, Vancouver, ISO, and other styles

17

Noser, Elizabeth A., Hashem M. Shaltoni, Christiana E. Hall, Andrei V. Alexandrov, Zsolt Garami, Edwin D. Cacayorin, Joon K. Song, James C. Grotta, and Morgan S. Campbell. "Aggressive Mechanical Clot Disruption." Stroke 36, no. 2 (February 2005): 292–96. http://dx.doi.org/10.1161/01.str.0000152331.93770.18.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Wood, Jonathan. "Pores separate and store gas." Materials Today 8, no. 9 (September 2005): 15. http://dx.doi.org/10.1016/s1369-7021(05)71072-5.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Gutmann, Anne K., David V. Lee, and Craig P. McGowan. "Collision-based mechanics of bipedal hopping." Biology Letters 9, no. 4 (August 23, 2013): 20130418. http://dx.doi.org/10.1098/rsbl.2013.0418.

Full text

Abstract:

The muscle work required to sustain steady-speed locomotion depends largely upon the mechanical energy needed to redirect the centre of mass and the degree to which this energy can be stored and returned elastically. Previous studies have found that large bipedal hoppers can elastically store and return a large fraction of the energy required to hop, whereas small bipedal hoppers can only elastically store and return a relatively small fraction. Here, we consider the extent to which large and small bipedal hoppers (tammar wallabies, approx. 7 kg, and desert kangaroo rats, approx. 0.1 kg) reduce the mechanical energy needed to redirect the centre of mass by reducing collisions. We hypothesize that kangaroo rats will reduce collisions to a greater extent than wallabies since kangaroo rats cannot elastically store and return as high a fraction of the mechanical energy of hopping as wallabies. We find that kangaroo rats use a significantly smaller collision angle than wallabies by employing ground reaction force vectors that are more vertical and center of mass velocity vectors that are more horizontal and thereby reduce their mechanical cost of transport. A collision-based approach paired with tendon morphometry may reveal this effect more generally among bipedal runners and quadrupedal trotters.

APA, Harvard, Vancouver, ISO, and other styles

20

Gao Huang, Zai. "Mechanical and thermodynamics properties of Al2Ca and Mg2Ca under various pressure: A first principle study." Materials Express 11, no. 9 (September 1, 2021): 1571–78. http://dx.doi.org/10.1166/mex.2021.2064.

Full text

Abstract:

The mechanical and thermodynamic properties of Al2Ca and Mg2Ca in the pressure range of 0~100 Gpa were investigated using first-principles calculations. The structural parameters, such as lattice constant ratio, unit cell volume ratio, density, were investigated. The calculated elastic constants satisfy the born’s stability criterion, indicating that they are mechanically stable at normal and high pressure. Mechanical parameters such as bulk modulus, shear modulus, and Young’s modulus of polycrystalline materials have been derived from single-crystal elastic constants. The Poisson’s ratio and anisotropy were investigated. The results show that the B/G value of Mg2Ca is greater than 1.75, indicating it is a ductile phase under various pressures. When the pressure was equal to 40 Gpa, Al2Ca was transferred brittle to toughness, and the bulk modulus, shear modulus, and Young’s modulus of Al2Ca were all larger than those of Mg2Ca, indicating that the comprehensive mechanical properties of Al2Ca are better than those of Mg2Ca. The constant heat capacity obtained by the quasi-harmonic approximation indicates that the ability of Mg2Ca to release or store heat is greater than that of Al2Ca. Moreover, the coefficient of thermal expansion (α) increases exponentially at lower temperatures and linearly at higher temperatures for both alloys.

APA, Harvard, Vancouver, ISO, and other styles

21

Lytle, Justin C., Julian M. Banbury, Rebekah A. Blakney, Michaela S. Burke, Ryan P. A. Clark, Robert D. Fisher, Sally V. Frederiksen, et al. "The preparation and properties of carbon inverse opal papers using carbon fiber sheets as a framework." Journal of Materials Chemistry A 4, no. 9 (2016): 3494–503. http://dx.doi.org/10.1039/c5ta08433d.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Harrowell, R. V. "Elastomer flywheel energy store." International Journal of Mechanical Sciences 36, no. 2 (February 1994): 95–103. http://dx.doi.org/10.1016/0020-7403(94)90078-7.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Wang, Jianjun, Xiaoyan Zhu, Xiaoling Wang, and Xi Li. "Values of PCT and STREM-1 combined with clinical pulmonary infection score for the prognostic evaluation of elderly patients with ventilator-associated pneumonia." Revista Romana de Medicina de Laborator 30, no. 1 (January 1, 2022): 71–79. http://dx.doi.org/10.2478/rrlm-2022-0006.

Full text

Abstract:

Abstract Objective: To explore the values of PCT and STREM-1 combined with clinical pulmonary infection score (CPIS) for evaluating ventilator-associated pneumonia (VAP) in elderly patients. Methods: A total of 120 eligible patients were selected as VAP group, and 60 other patients without VAP were selected as control group. According to APACHE II scores, VAP group was divided into low-, medium-, and high-risk groups. The correlations of PCT, STREM-1, and CPIS with APACHE II score were analyzed. The values of PCT and STREM-1 combined with CPIS for evaluating prognosis were analyzed using ROC curves. Results: In the VAP group, serum PCT and STREM-1 levels and CPIS after mechanical ventilation significantly exceeded those of the control group and before mechanical ventilation (P<0.05). These values were higher in the high-risk group than in medium- and low-risk groups (P<0.05). They were positively correlated with APACHE II score (P<0.001). These values of the death group were significantly higher than those of the survival group 1, 3, 5, and 7 d after treatment (P<0.05). AUC of PCT and STREM-1 combined with CPIS for assessing prognosis was 0.892 (P<0.001). Conclusions: Serum PCT and STREM-1 levels and CPIS significantly increase in elderly patients with VAP, which rise with aggravation. Their combination has higher values for prognostic evaluation.

APA, Harvard, Vancouver, ISO, and other styles

24

SQUIRES, T. M. "A furtive stare at an intra-cellular flow." Journal of Fluid Mechanics 642 (December 23, 2009): 1–4. http://dx.doi.org/10.1017/s0022112009992990.

Full text

Abstract:

Rarely do intra-cellular flows amount to much: cells are small, and so are their Reynolds numbers. The extraordinarily large cells of the Characean algae provide a fascinating counter-example, as their geometry precludes the standard methods of distributing food and waste. van de Meent et al. (J. Fluid Mech., 2010, this issue, vol. 642, pp. 5–14) present nuclear magnetic resonance (NMR) velocimetry measurements of the fluid flow within individual living cells, which agree quantitatively with their fluid mechanical model and confirm a long-standing hypothesis. In addition to biomimetic parallels with microfluidic labs on chips, this work showcases NMR velocimetry as an under-appreciated but immensely powerful technique. The non-invasive tracer-free high-resolution flow measurements it enables – even in opaque and heterogeneous fluids – should find wide application.

APA, Harvard, Vancouver, ISO, and other styles

25

Bilal, Ahmed, and S. S. Shah. "CAD Modeling of Store Carrying Rack-9 / Store Carrying Rack-9A, Their Aerodynamic Analysis and Validation through Wind Tunnel Test." Journal of Applied Fluid Mechanics 9, no. 3 (May 1, 2016): 1237–46. http://dx.doi.org/10.18869/acadpub.jafm.68.228.22971.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Wang, Y. l. "Flux at Focal Adhesions: Slippage Clutch, Mechanical Gauge, or Signal Depot." Science's STKE 2007, no. 377 (March 6, 2007): pe10. http://dx.doi.org/10.1126/stke.3772007pe10.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Wang, Xin, Xiaolin Zhu, Yunhang Wang, and Long Lu. "Design of Payment System for Unmanned Convenience Store." Frontiers in Science and Engineering 2, no. 7 (August 3, 2022): 8–16. http://dx.doi.org/10.54691/fse.v2i7.1400.

Full text

Abstract:

The unattended convenience store system for customers to pay and pick up goods by self-service has disclosed a project to add e-commerce concept to the retail industry. The rise of the Internet has made e-commerce develop rapidly, and the development of network payment and cloud service has escorted e-commerce.But so far, e-commerce is difficult to be applied in the retail field because of people's shopping habits.This project comprehensively considers various factors, uses mechanical and electrical equipment automation, comprehensive deployment of cloud server, and key generation and verification to realize e-commerce concept in retail field.

APA, Harvard, Vancouver, ISO, and other styles

28

Kanoldt, Verena, Lisa Fischer, and Carsten Grashoff. "Unforgettable force – crosstalk and memory of mechanosensitive structures." Biological Chemistry 400, no. 6 (June 26, 2019): 687–98. http://dx.doi.org/10.1515/hsz-2018-0328.

Full text

Abstract:

Abstract The ability of cells to sense and respond to mechanical stimuli is crucial for many developmental and homeostatic processes, while mechanical dysfunction of cells has been associated with numerous pathologies including muscular dystrophies, cardiovascular defects and epithelial disorders. Yet, how cells detect and process mechanical information is still largely unclear. In this review, we outline major mechanisms underlying cellular mechanotransduction and we summarize the current understanding of how cells integrate information from distinct mechanosensitive structures to mediate complex mechanoresponses. We also discuss the concept of mechanical memory and describe how cells store information on previous mechanical events for different periods of time.

APA, Harvard, Vancouver, ISO, and other styles

29

Gralla, Jan, Gerhard Schroth, Luca Remonda, Krassen Nedeltchev, Johannes Slotboom, and Caspar Brekenfeld. "Mechanical Thrombectomy for Acute Ischemic Stroke." Stroke 37, no. 12 (December 2006): 3019–24. http://dx.doi.org/10.1161/01.str.0000248457.55493.85.

Full text

APA, Harvard, Vancouver, ISO, and other styles

30

Nielsen, S., and J. D. Larsen. "Operational strategy, economic and environmental performance of sludge treatment reed bed systems – based on 28 years of experience." Water Science and Technology 74, no. 8 (July 5, 2016): 1793–99. http://dx.doi.org/10.2166/wst.2016.295.

Full text

Abstract:

Sludge treatment reed bed (STRB) systems have been used for dewatering and mineralisation of sludge in Europe since 1988. STRB systems provide substantial environmental, economic, and operational benefits compared to mechanical sludge dewatering solutions such as belt presses and centrifuges. They require less energy, no chemicals, reduce the sludge volume and produce bio solids with dry solid contents up to 20–40% under Danish climate conditions, depending on the sludge quality. Experience has shown that sludge treated in STRBs represents a high quality product with a low content of pathogens and hazardous organic compounds, qualities that make it suitable for recycling on agricultural land. The upfront capital cost for STRBs are often higher compared to mechanical dewatering devices. However, the operational expenses (OPEX) (including energy, chemicals, bio solid handling) are significantly lower compared to conventional mechanical dewatering devices, delivering an economic break-even of about 3–5 years. This paper provides an overview of the operation and maintenance costs and environmental benefits of a typical STRB based on the experiences gained from the operation of a large number of STRBs with yearly treatment capacities between 100 and 3,000 tonnes of dry solid up to approximately 250,000 PE in Denmark and Europe.

APA, Harvard, Vancouver, ISO, and other styles

31

Tanujaya, H., and I. W. Sukania. "Experimental Study of Stationary-Head/Channel Cover STHE Prototype Using ε-NTU Method." Experimental Techniques 43, no. 6 (April 23, 2019): 645–55. http://dx.doi.org/10.1007/s40799-019-00322-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Sheharyar, M., E. Uddin, Z. Ali, Q. Zaheer, and A. Mubashar. "Simulation of a Standard Store Separated from Generic Wing." Journal of Applied Fluid Mechanics 11, no. 6 (November 1, 2018): 1579–89. http://dx.doi.org/10.29252/jafm.11.06.28865.

Full text

APA, Harvard, Vancouver, ISO, and other styles

33

Macrae, R. A., K. Miller, and B. J. Doyle. "Methods in Mechanical Testing of Arterial Tissue: A Review." Strain 52, no. 5 (May 30, 2016): 380–99. http://dx.doi.org/10.1111/str.12183.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Jin, Shi Hong, Li Yun, and Jia Ning Jia. "Based on the Sound Spectrum Detection Engine Mechanical Characteristics Monitoring and Consistency Analysis Research." Advanced Materials Research 933 (May 2014): 590–95. http://dx.doi.org/10.4028/www.scientific.net/amr.933.590.

Full text

Abstract:

According to the different engine materials and mechanical properties, we use sound spectrum detection methods to check mechanical noise. We design a system to monitor the consistency of the engine material mechanical properties. The system should be prior to detect and store the object sound spectrum characteristics, then according to the typical standard parts, do a lot of experiments through the frequency-domain analysis algorithm. The experimental results show the system has the very good identification characteristics for source frequency relatively stable mechanical system. So the system in the product identification, design, consistency evaluation plays an important role.

APA, Harvard, Vancouver, ISO, and other styles

35

Ma, Qintian, Qingyuan Yang, Aziz Ghoufi, Ke Yang, Ming Lei, Gérard Férey, Chongli Zhong, and Guillaume Maurin. "Guest-modulation of the mechanical properties of flexible porous metal–organic frameworks." J. Mater. Chem. A 2, no. 25 (2014): 9691–98. http://dx.doi.org/10.1039/c4ta00622d.

Full text

Abstract:

The highly flexible hybrid nanoporous MOF MIL-53(Cr) was evoked as a potential medium to store mechanical energy via a structural switching from an open to a close pore form under moderate applied external pressures.

APA, Harvard, Vancouver, ISO, and other styles

36

Feldman, David P., and James P. Crutchfield. "Discovering Noncritical Organization: Statistical Mechanical, Information Theoretic, and Computational Views of Patterns in One-Dimensional Spin Systems." Entropy 24, no. 9 (September 11, 2022): 1282. http://dx.doi.org/10.3390/e24091282.

Full text

Abstract:

We compare and contrast three different, but complementary views of “structure” and “pattern” in spatial processes. For definiteness and analytical clarity, we apply all three approaches to the simplest class of spatial processes: one-dimensional Ising spin systems with finite-range interactions. These noncritical systems are well-suited for this study since the change in structure as a function of system parameters is more subtle than that found in critical systems where, at a phase transition, many observables diverge, thereby making the detection of change in structure obvious. This survey demonstrates that the measures of pattern from information theory and computational mechanics differ from known thermodynamic and statistical mechanical functions. Moreover, they capture important structural features that are otherwise missed. In particular, a type of mutual information called the excess entropy—an information theoretic measure of memory—serves to detect ordered, low entropy density patterns. It is superior in several respects to other functions used to probe structure, such as magnetization and structure factors. ϵ-Machines—the main objects of computational mechanics—are seen to be the most direct approach to revealing the (group and semigroup) symmetries possessed by the spatial patterns and to estimating the minimum amount of memory required to reproduce the configuration ensemble, a quantity known as the statistical complexity. Finally, we argue that the information theoretic and computational mechanical analyses of spatial patterns capture the intrinsic computational capabilities embedded in spin systems—how they store, transmit, and manipulate configurational information to produce spatial structure.

APA, Harvard, Vancouver, ISO, and other styles

37

Li, Xiao Ke, Li Sun, Y. Y. Zhou, and Shun Bo Zhao. "A Review of Stee-Polypropylene Hybrid Fiber Reinforced Concrete." Applied Mechanics and Materials 238 (November 2012): 26–32. http://dx.doi.org/10.4028/www.scientific.net/amm.238.26.

Full text

Abstract:

The steel-polypropylene hybrid fiber reinforced concrete can take full advantages of macro-scale crack resistance and toughening effect on the concrete matrix of steel and polypropylene fibers. The shortcomings of concrete are improved and there is a wide prospect application in engineering. This paper summarizes the enhancement theories of hybrid fiber reinforced concrete to explain its strengthening mechanism. The research status is reviewed including mix proportion design, working performance of fresh concrete, mechanical behaviors, durability (impermeability, shrinkage and others), and engineering applications etc. Some further researches are forecasted. It would be very useful to apply and popularize steel-polypropylene hybrid fiber reinforced concrete.

APA, Harvard, Vancouver, ISO, and other styles

38

Yue, Xian Long. "Collection and Application of the Discontinuous Energy." Advanced Materials Research 722 (July 2013): 433–36. http://dx.doi.org/10.4028/www.scientific.net/amr.722.433.

Full text

Abstract:

The article takes a gate as an example for studying the collecting,switching and using of the discontinuous mechanical energy created by opening and closing a gate .Firstly, we can generate power by mechanical energy created during the process of pulling and pushing a gate through devices which can collect mechanical energy and transform power. Then we'll store the power in the nickel-metal hydride batteries after rectifying and boosting for supporting power for counting device.This device can generate power for counting devices by mechanical energy which is seemingly useless in our normal life. It can save energyconsumption but cater to the idea of energy conservation and emission reduction.

APA, Harvard, Vancouver, ISO, and other styles

39

Belhouideg, S., and M. Lagache. "Experimental Determination of the Mechanical Behaviour of Compacted Exfoliated Vermiculite." Strain 51, no. 2 (December 16, 2014): 101–9. http://dx.doi.org/10.1111/str.12125.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Haecker, Ryan. "Sacramental Engines: The Trinitarian Ontology of Computers in Charles Babbage’s Analytical Engine." Religions 13, no. 8 (August 19, 2022): 757. http://dx.doi.org/10.3390/rel13080757.

Full text

Abstract:

Charles Babbage’s Analytical Engine can be recollected as a fossilized image of the first digital computer. It is essentially distinguished from all prior and analog computers by the transcription of the ‘mechanical notation’, the separation of the mnemonic ‘store’ from the cybernetic ‘mill’, and the infinite miniaturization of its component parts. This substitution of finite space for an accelerating singularity of time creates the essential rupture of the digital, in which a singular calculation of mechanical force stands opposed to the universal totality of space. Babbage’s criticism of Christian doctrine to preserve the mathematical consistency of mechanics and computing would result in the collapse of the Christian Trinity into a digital theology. This Arian subordinate difference of the Son to the Father would then be infinitely transcribed in a technical contradiction that would threaten to annul the metaphysical ground of any machine. Against digital and postdigital theologies alike, this rupture can only be repaired by a dialectical analysis of the digital into a hyperdigital grammar, which is created by Christ the Logos in a trinitarian ontology of computers. Digital computers can thus be vindicated from theological suspicion as incarnationally accelerated calculators of the sacraments, or ‘sacramental engines’ of the digital age.

APA, Harvard, Vancouver, ISO, and other styles

41

Wagenseil, Jessica E., and Robert P. Mecham. "Vascular Extracellular Matrix and Arterial Mechanics." Physiological Reviews 89, no. 3 (July 2009): 957–89. http://dx.doi.org/10.1152/physrev.00041.2008.

Full text

Abstract:

An important factor in the transition from an open to a closed circulatory system was a change in vessel wall structure and composition that enabled the large arteries to store and release energy during the cardiac cycle. The component of the arterial wall in vertebrates that accounts for these properties is the elastic fiber network organized by medial smooth muscle. Beginning with the onset of pulsatile blood flow in the developing aorta, smooth muscle cells in the vessel wall produce a complex extracellular matrix (ECM) that will ultimately define the mechanical properties that are critical for proper function of the adult vascular system. This review discusses the structural ECM proteins in the vertebrate aortic wall and will explore how the choice of ECM components has changed through evolution as the cardiovascular system became more advanced and pulse pressure increased. By correlating vessel mechanics with physiological blood pressure across animal species and in mice with altered vessel compliance, we show that cardiac and vascular development are physiologically coupled, and we provide evidence for a universal elastic modulus that controls the parameters of ECM deposition in vessel wall development. We also discuss mechanical models that can be used to design better tissue-engineered vessels and to test the efficacy of clinical treatments.

APA, Harvard, Vancouver, ISO, and other styles

42

Pavlov, Valentin. "MECHANICAL ROTATION STABILIZER." Transport engineering 2022, no. 11 (November 10, 2022): 32–38. http://dx.doi.org/10.30987/2782-5957-2022-11-32-38.

Full text

Abstract:

The study objective is to find a mechanical analogue of cyclotron motion and to determine the structure of the corresponding device, which is appropriately called a stabilized rotator. The topic of speed stabilization is relevant. With cyclotron motion, the Lagrangian of an electron is twice as large as its kinetic energy. In terms of macromechanics, this corresponds to the equality of kinetic and potential energies. This condition is key to the possibility of generalizing cyclotron motion to mechanics. It follows from this that the composition of a stabilized rotator should include elements that are able to store both of these energy types. Such elements are the load and the spring. The natural rotation frequency of the stabilized rotator is strictly fixed (it does not depend on either the moment of inertia or the angular momentum) and remarkably coincides with the natural frequency of the pendulum with identical parameters. When the angular momentum changes, the radius and tangential velocity change (the rotation frequency does not change and is equal to its own). At zero torque moment in stationary mode, the rotation frequency of the stabilized rotator cannot be arbitrary and takes a single value. Just as when the pendulum is forced to swing, the frequency does not coincide with its own frequency, the rotation frequency of the stabilized rotator does not coincide with its own rotation frequency when loaded. A stabilized rotor can be used to control the natural oscillation frequency of a radial oscillator, although in this case it may have strong competition with mechatronic systems. On the contrary, as a rotation stabilizer, its competitive capabilities are undeniable and determined by the extremely simple design.

APA, Harvard, Vancouver, ISO, and other styles

43

Kozak, Mustafa Tugrul, Erdinc Nuri Yildiz, Yigit Yazicioglu, and Ender Cigeroglu. "Modeling of aircraft effects on external store ejection." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 233, no. 10 (October 18, 2018): 3612–26. http://dx.doi.org/10.1177/0954410018803504.

Full text

Abstract:

Modern fighter aircraft, together with their interceptor roles, are utilized as aerial bomb and long-/short-range missile carriers. Separation of those external stores from aircraft is still a challenge where the external store has to clear the carrier aircraft following the ejection process. Aircraft and store aerodynamics coupled with their individual flight conditions may result in an unsafe ejection where the store may interfere with the carrier aircraft instead of a clear separation. Store ejection is the initial phase of the launching process, which dominates the separation of the store by generating the initial conditions. Any error introduced to the store separation analysis during this phase will propagate to the complete trajectory solution, which is used for determining whether the store separation is safe or not. The objective of this paper is to present a computational methodology that includes not only the store aerodynamics but also the interactions of the store with aircraft rigid body motions and deformations, together with ejector dynamics. In this study, store aerodynamics, aircraft aerodynamics, aircraft aeroelasticity, and pylon elasticity are used to characterize the ejector dynamics for determining the ejection end-of-stroke parameters.

APA, Harvard, Vancouver, ISO, and other styles

44

Spilman, Bill, John Boyd, and Robert W. Bruce. "STLE Celebrates 40 Years of Tribology Transactions." Tribology Transactions 40, no. 2 (January 1997): 392. http://dx.doi.org/10.1080/10402009708983672.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Álvarez-Macías, C., L. Salgado-Conrado, J. De la Cuz Canul, and And M. Rivero Corona. "Mechanical energy analysis of a boomerang mechanism." Revista Mexicana de Física E 17, no. 1 Jan-Jun (January 28, 2020): 19. http://dx.doi.org/10.31349/revmexfise.17.19.

Full text

Abstract:

In this paper, we present a comparison of classical theory with video analysis techniques to teach kinetic and potential energy of a device with a boomerang effect as an observable and measurable concept. The device can store energy through an elastic band when it rolls downan inclined plane and can release the energy when it rolls on a horizontal surface; hence, the name Boomerang. In theoretical terms, the details of energy charge and discharge processes are analysed with Newton’s laws and Lagrangian method. The experimental results were recorded with cell phone cameras and processed with an open-source video analysis software, called ’Tracker’. The comparison shows relevant concepts about kinetic and potential energy, which can help the student to overcome some of the typical student misconceptions.

APA, Harvard, Vancouver, ISO, and other styles

46

Rochat, Sébastien, Katarzyna Polak-Kraśna, Mi Tian, Leighton T. Holyfield, Timothy J. Mays, Christopher R. Bowen, and Andrew D. Burrows. "Hydrogen storage in polymer-based processable microporous composites." Journal of Materials Chemistry A 5, no. 35 (2017): 18752–61. http://dx.doi.org/10.1039/c7ta05232d.

Full text

Abstract:

Microporous polymer-based membranes (PIM-1) doped with a porous aromatic framework (PAF-1) combine mechanical flexibility with enhanced hydrogen uptake capacities: they can potentially store up to 6.7 wt% H₂ at 77 K.

APA, Harvard, Vancouver, ISO, and other styles

47

Paini, Anna, Pierre Boutouyrie, David Calvet, Mustapha Zidi, Enrico Agabiti-Rosei, and Stéphane Laurent. "Multiaxial Mechanical Characteristics of Carotid Plaque." Stroke 38, no. 1 (January 2007): 117–23. http://dx.doi.org/10.1161/01.str.0000251796.38954.b2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

İŞCAN, Evin. "Determination the Effect of YAP/TAZ Signaling Pathway on Mechanical Stress Induced Hypertrophic Scar Formation by GEO2R." Turkiye Klinikleri Journal of Dermatology 31, no. 2 (2021): 109–17. http://dx.doi.org/10.5336/dermato.2020-80691.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Yen, Chia Ming, and Jesse Yen. "Cloud-Based Mechanical Design Oriented Python Program Development System." Applied Mechanics and Materials 764-765 (May 2015): 848–52. http://dx.doi.org/10.4028/www.scientific.net/amm.764-765.848.

Full text

Abstract:

In this paper, a mechanical design oriented Python program development system was created to assist engineers to manage their programming assets more efficiently. This cloud-based platform includes a content management system and Python-in-browser IDE (Integrated Development Environment). The motivation of this research is to allow mechanical designers to store their programs and design data locally and remotely in synchronous. This paper introduces the basic concept of the platform, architecture, installation and utilization, and the advantages that can be achieved by using this platform. This platform is released under the GPL V3 license.

APA, Harvard, Vancouver, ISO, and other styles

50

Zhao, C., J. Ma, and S. Du. "The mechanical behaviour of new long-span hollow-core roofs based on aluminum alloy honeycomb panels." materiali in tehnologije 53, no. 3 (June 12, 2019): 311–18. http://dx.doi.org/10.17222/mit.2018.075.

Full text

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!