Log in

Relevant bibliographies by topics / Threshold of fire resistance / Journal articles

To see the other types of publications on this topic, follow the link: Threshold of fire resistance.

Journal articles on the topic 'Threshold of fire resistance'

Author: Grafiati

Published: 4 June 2025

Last updated: 1 August 2025

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 'Threshold of fire resistance.'

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

Won, Sung-Ho, Joo-won Lee, and Hae-Yeol Lee. "Double Gasket Research and Development to Improve the Fire Resistance Performance of a No Threshold Fire Door." Fire Science and Engineering 36, no. 4 (2022): 20–28. http://dx.doi.org/10.7731/kifse.51a66e01.

Full text

Abstract:

Fire doors are installed to prevent the spread of fire in a building, whereby gaps between the door frame and door leaf are blocked using gaskets of various materials and shapes. However, there are many difficulties in ensuring the desired performance. This study focuses on the research and development of a double gasket that can improve the fire resistance performance of a no threshold fire door, in which the door frame under the fire door has been removed. This is a product that has been researched and developed to improve fire resistance and airtightness in no threshold fire doors by connec

APA, Harvard, Vancouver, ISO, and other styles

2

Lee, Joowon, Bohyeok Lim, and Haeyeol Lee. "Study on the Method of Improving the Fire Resistance Performance of No Threshold Fire Door." Journal of the Korean Society of Hazard Mitigation 23, no. 1 (2023): 133–39. http://dx.doi.org/10.9798/kosham.2023.23.1.133.

Full text

Abstract:

In this study, we aim to improve the fire resistance performance by solving the structural problem so that gas or flame does not leak through the door in case of a fire while maintaining airtightness and insulation when removing the threshold at the bottom of a general fire door. To improve airtightness and insulation performance along with fire-resistance, an ordinary auto-bottom is provided in the lower part of the door. However, there is a limit to securing fire-resistance. To maximize fire-resistance performance, graphite, an expandable foaming agent, is applied to block the gap between th

APA, Harvard, Vancouver, ISO, and other styles

3

Madrigal, Javier, Jennifer Souto-García, Rafael Calama, Mercedes Guijarro, Juan Picos, and Carmen Hernando. "Resistance of Pinus pinea L. bark to fire." International Journal of Wildland Fire 28, no. 5 (2019): 342. http://dx.doi.org/10.1071/wf18118.

Full text

Abstract:

The stone pine (Pinus pinea L.) has thick bark as an adaptation to wildfire. In this study, laboratory tests were carried out to quantify the influence of bark thickness on flammability and fire resistance in this species. Heating rate in the cambium and the time to reach lethal temperatures in living tissues were determined using a mass loss calorimeter. In addition, data from permanent plots were used to generate linear mixed models to predict bark thickness along the trunk in stone pine stands. The combination of laboratory and field data provided information about the critical threshold of

APA, Harvard, Vancouver, ISO, and other styles

4

Yevtushenko, Y. M., G. P. Goncharuk, Y. A. Grigoriev, I. O. Kuchkina, and V. G. Shevchenko. "Fire retardant electrically conductive composite materials based on polyethylene." Perspektivnye Materialy 5 (2021): 65–75. http://dx.doi.org/10.30791/1028-978x-2021-5-65-75.

Full text

Abstract:

The article presents the results of research on electrically conductive hard-to-burn composite materials based on polyethylene, graphite and some flame retardants. It is shown that optimal electrical conducting properties and the flammability rating (V0) in accordance with UL 94 test are achieved by modifying the graphite-containing composite material based on low-pressure polyethylene with ammonium polyphosphate and (or) aluminum hydroxide. It is shown that the percolation threshold of a composite material based on high-pressure polyethylene and graphite is observed at significantly higher va

APA, Harvard, Vancouver, ISO, and other styles

5

Serhii, Novak, Drizhd Varvara, Dobrostan Oleksandr, and Maladyka Larisa. "INFLUENCE OF TESTING SAMPLES' PARAMETERS ON THE RESULTS OF EVALUATING THE FIREPROTECTIVE CAPABILITY OF MATERIALS." Eastern-European Journal of Enterprise Technologies 2, no. 10 (98) (2019): 35–42. https://doi.org/10.15587/1729-4061.2019.164743.

Full text

Abstract:

Test methods given in EN 13381-4:2013 and EN 13381-8:2013 standards serve to assess the fire-protective capacity of materials for steel structures. The results of the tests determine data on minimum thickness of fire-protective materials used further in design of steel structures. The tests are very time consuming. They require significant costs for creation of standardized samples and conduction of tests. At the same time, there are methods, which propose to use samples of reduced sizes and of other shapes than sizes and shapes of standardized samples. There is an actual question about possib

APA, Harvard, Vancouver, ISO, and other styles

6

Chaudhary, Ranjit Kumar, Tathagata Roy, and Vasant Matsagar. "Member and structural fragility of reinforced concrete structure under fire." Journal of Structural Fire Engineering 11, no. 4 (2020): 409–35. http://dx.doi.org/10.1108/jsfe-02-2019-0015.

Full text

Abstract:

Purpose Despite recognizing the significance of risk-based frameworks in fire safety engineering, the usual approach in structural fire design is largely member/component level, wherein effect of uncertainties influencing the fire resistance of structures are not explicitly considered. In this context, a probabilistic framework is presented to investigate the vulnerability of a reinforced concrete (RC) members and structure under fire loading scenario. Design/methodology/approach The RC structures exposed to fire are modeled in a finite element (FE) platform incorporating material and geometri

APA, Harvard, Vancouver, ISO, and other styles

7

Le Roux, P. M. F., M. A. Khan, G. A. L. Broggini, B. Duffy, C. Gessler, and A. Patocchi. "Mapping of quantitative trait loci for fire blight resistance in the apple cultivars ‘Florina’ and ‘Nova Easygro’." Genome 53, no. 9 (2010): 710–22. http://dx.doi.org/10.1139/g10-047.

Full text

Abstract:

Fire blight is a devastating bacterial disease of rosaceous plants. Its damage to apple production is a major concern, since no existing control option has proven to be completely effective. Some commercial apple varieties, such as ‘Florina’ and ‘Nova Easygro’, exhibit a consistent level of resistance to fire blight. In this study, we used an F1 progeny of ‘Florina’ × ‘Nova Easygro’ to build parental genetic maps and identify quantitative trait loci (QTLs) related to fire blight resistance. Linkage maps were constructed using a set of microsatellites and enriched with amplified fragment length

APA, Harvard, Vancouver, ISO, and other styles

8

Pinard, Michelle A., and Jean Huffman. "Fire resistance and bark properties of trees in a seasonally dry forest in eastern Bolivia." Journal of Tropical Ecology 13, no. 5 (1997): 727–40. http://dx.doi.org/10.1017/s0266467400010890.

Full text

Abstract:

ABSTRACTAs forest fragmentation and intentional burning of grasslands increase, the frequency of fires penetrating the dry and subhumid tropical forests of Bolivia is also likely to increase. To expand our understanding of the role of fire in tropical dry forest, the physical and thermal properties of barks of tree species were studied to determine their relative resistances to cambial damage by fire. For 16 tree species found in the dry forest of the Lomerío region of eastern Bolivia, bark thickness, moisture content, and specific gravity were measured. Insulating capabilities of bark were me

APA, Harvard, Vancouver, ISO, and other styles

9

Fernandes. "Variation in the Canadian Fire Weather Index Thresholds for Increasingly Larger Fires in Portugal." Forests 10, no. 10 (2019): 838. http://dx.doi.org/10.3390/f10100838.

Full text

Abstract:

Forest fire management relies on the fire danger rating to optimize its suite of activities. Limiting fire size is the fire management target whenever minimizing burned area is the primary goal, such as in the Mediterranean Basin. Within the region, wildfire incidence is especially acute in Portugal, a country where fire-influencing anthropogenic and landscape features vary markedly within a relatively small area. This study establishes daily fire weather thresholds associated to transitions to increasingly larger fires for individual Portuguese regions (2001–2011 period), using the national w

APA, Harvard, Vancouver, ISO, and other styles

10

Wu, Jiaxin, ZhiPeng Du, Ming Yan, and Xingwei Sun. "Assessment of Ship Hull Ultimate Strength under Fire Conditions: The Fire Smith Method Approach." Journal of Marine Science and Engineering 11, no. 11 (2023): 2055. http://dx.doi.org/10.3390/jmse11112055.

Full text

Abstract:

This article presents the fire Smith method, which integrates the plate model and the Smith method, to analyze the impact of fire temperature and extent on the buckling strength of frigates. This investigation focused on the frigate’s buckling strength and how it is affected by a fire, achieved by modifying both deck temperature and area. Leveraging the principle of oxygen consumption, a coefficient “D” was introduced to account for fire temperature and region variations. This enabled the characterization of buckling strength under varying temperature and regional conditions through 64 simulat

APA, Harvard, Vancouver, ISO, and other styles

11

Chang, Tsui-Yuan, Hsi-Peng Lu, Tain-Yi Luor, and Ping-Wu Chang. "Weighting of Firefighting Turnout Gear Risk Factors According to Expert Opinion." Sustainability 14, no. 12 (2022): 7040. http://dx.doi.org/10.3390/su14127040.

Full text

Abstract:

Firefighters in Taiwan often wear expired protective clothing, which raises concerns regarding their safety. Extending the service life of fire protective clothing can improve firefighter safety and ensure environmental sustainability. In this study, an analytic hierarchy process was used to understand which risk factors should be prioritized in the design of firefighting turnout gear. We surveyed 30 experts in the field of firefighting and safety management on the importance of various risk factors related to turnout gear. A risk level of 70% was taken as the threshold of tolerable risk. The

APA, Harvard, Vancouver, ISO, and other styles

12

Schunk, C., B. Ruth, M. Leuchner, C. Wastl, and A. Menzel. "Comparison of different methods for the in situ measurement of forest litter moisture content." Natural Hazards and Earth System Sciences Discussions 3, no. 6 (2015): 3733–60. http://dx.doi.org/10.5194/nhessd-3-3733-2015.

Full text

Abstract:

Abstract. Dead fine fuel (e.g. litter) moisture content is an important parameter for both forest fire and ecological applications as it is related to ignitability, fire behavior as well as soil respiration. However, the comprehensive literature review in this paper shows that there is no easy-to-use method for automated measurements available. This study investigates the applicability of four different sensor types (permittivity and electrical resistance measuring principles) for this measurement. Comparisons were made to manual gravimetric reference measurements carried out almost daily for

APA, Harvard, Vancouver, ISO, and other styles

13

Ling, Han, Guangyu Wang, Wanli Wu, Anil Shrestha, and John L. Innes. "Grassland Resilience to Woody Encroachment in North America and the Effectiveness of Using Fire in National Parks." Climate 11, no. 11 (2023): 219. http://dx.doi.org/10.3390/cli11110219.

Full text

Abstract:

The grasslands of North America are threatened by woody encroachment. Restoring historical fire regimes has been used to manage brush encroachment. However, fire management may be insufficient due to the nonlinear and hysteretic responses of vegetation recovery following encroachment and the social–political constraints affecting fire management. We synthesized the fire thresholds required to control woody encroachment by typical encroaching species in North America, especially the Great Plains region, and identified the social–political constraints facing fire management in selected grassland

APA, Harvard, Vancouver, ISO, and other styles

14

Schunk, C., B. Ruth, M. Leuchner, C. Wastl, and A. Menzel. "Comparison of different methods for the in situ measurement of forest litter moisture content." Natural Hazards and Earth System Sciences 16, no. 2 (2016): 403–15. http://dx.doi.org/10.5194/nhess-16-403-2016.

Full text

Abstract:

Abstract. Dead fine fuel (e.g., litter) moisture content is an important parameter for both forest fire and ecological applications as it is related to ignitability, fire behavior and soil respiration. Real-time availability of this value would thus be a great benefit to fire risk management and prevention. However, the comprehensive literature review in this paper shows that there is no easy-to-use method for automated measurements available. This study investigates the applicability of four different sensor types (permittivity and electrical resistance measuring principles) for this measurem

APA, Harvard, Vancouver, ISO, and other styles

15

Pesavento, Michael J., Cynthia D. Rittenhouse, and David J. Pinto. "Response Sensitivity of Barrel Neuron Subpopulations to Simulated Thalamic Input." Journal of Neurophysiology 103, no. 6 (2010): 3001–16. http://dx.doi.org/10.1152/jn.01053.2009.

Full text

Abstract:

Our goal is to examine the relationship between neuron- and network-level processing in the context of a well-studied cortical function, the processing of thalamic input by whisker-barrel circuits in rodent neocortex. Here we focus on neuron-level processing and investigate the responses of excitatory and inhibitory barrel neurons to simulated thalamic inputs applied using the dynamic clamp method in brain slices. Simulated inputs are modeled after real thalamic inputs recorded in vivo in response to brief whisker deflections. Our results suggest that inhibitory neurons require more input to r

APA, Harvard, Vancouver, ISO, and other styles

16

Manalindo, Abo Yasser, Ahmad Ridha Arani, and Wenmarie Quijano. "Fabrication and Analysis of Thermal Insulation Ceiling Panel from Corn Husk Fiber." Key Engineering Materials 953 (August 25, 2023): 113–20. http://dx.doi.org/10.4028/p-wzsx92.

Full text

Abstract:

Every year, the Philippines experiences hot and rainy weather. For those who choose to remain at home, summer feels like torture. So, Filipinos have no choice but to turn on their air-conditioning system, which can cause their electricity bill to skyrocket. Corn husk fibers, being a waste product, have great potential to be applied in home textiles, home furnishing, carpet, rugs, and packaging of food grains and crops. The researchers thought of making thermal insulation ceiling panels made of corn husk fibers. The study yielded a result of 0.119 W/m.K for thermal conductivity using a calibrat

APA, Harvard, Vancouver, ISO, and other styles

17

Kim, J. K., L. M. Leung, S. W. R. Lee, and Y. Hirai. "Impact Performance of a Woven Fabric CFRP Laminate." Engineering Plastics 4, no. 8 (1996): 147823919600400. http://dx.doi.org/10.1177/147823919600400803.

Full text

Abstract:

Low velocity instrumented impact, ultrasonic C-scan and compression-after-impact tests have been employed to assess the damage resistance and damage tolerance of carbon fibre-epoxy matrix composites (CFRPs). The potential advantages of using woven fabrics, compared to cross ply unidirectional fibres, in impact performance of carbon fibre composites were examined. The laminates had two distinct fibre configurations and similar static in-plane mechanical properties in the undamaged state. The characteristic impact loads and the corresponding absorbed energies were used to evaluate the initial da

APA, Harvard, Vancouver, ISO, and other styles

18

Kim, J. K., L. M. Leung, S. W. R. Lee, and Y. Hirai. "Impact Performance of a Woven Fabric CFRP Laminate." Polymers and Polymer Composites 4, no. 8 (1996): 549–61. http://dx.doi.org/10.1177/096739119600400803.

Full text

Abstract:

Low velocity instrumented impact, ultrasonic C-scan and compression-after-impact tests have been employed to assess the damage resistance and damage tolerance of carbon fibre-epoxy matrix composites (CFRPs). The potential advantages of using woven fabrics, compared to cross ply unidirectional fibres, in impact performance of carbon fibre composites were examined. The laminates had two distinct fibre configurations and similar static in-plane mechanical properties in the undamaged state. The characteristic impact loads and the corresponding absorbed energies were used to evaluate the initial da

APA, Harvard, Vancouver, ISO, and other styles

19

Liu, Yu-shan, Jian-yong Pang, and Wei-jing Yao. "Effects of High Temperature on Creep Behaviour of Glazed Hollow Bead Insulation Concrete." Materials 13, no. 17 (2020): 3658. http://dx.doi.org/10.3390/ma13173658.

Full text

Abstract:

Glazed hollow bead insulation concrete (GHBC) presents a promising application prospect in terms of its light weight and superior fire resistance. However, only a few studies have focused on the creep behaviour of GHBC exposed to high temperatures. Therefore, in this study, the mechanism of high temperature on GHBC is analysed through a series of tests on uniaxial compression and multistage creep of GHBC, exposed from room temperature up to 800 °C. The results show a decrease in the weight and compressive strength of GHBC as the temperature rises. After 800 °C, the loss of weight and strength

APA, Harvard, Vancouver, ISO, and other styles

20

Nambu, A., and R. Llinas. "Electrophysiology of globus pallidus neurons in vitro." Journal of Neurophysiology 72, no. 3 (1994): 1127–39. http://dx.doi.org/10.1152/jn.1994.72.3.1127.

Full text

Abstract:

1. We investigated the electrical properties of globus pallidus neurons intracellularly using brain slices from adult guinea pigs. Three types of neurons were identified according to their intrinsic electrophysiological properties. 2. Type I neurons (59%) were silent at the resting membrane level (-65 +/- 10 mV, mean +/- SD) and generated a burst of spikes, with strong accommodation, to depolarizing current injection. Calcium-dependent low-frequency (1-8 Hz) membrane oscillations were often elicited by membrane depolarization (-53 +/- 8 mV). A low-threshold calcium conductance and an A-current

APA, Harvard, Vancouver, ISO, and other styles

21

HEFLIN, STEPHANIE J., and PAUL B. COOK. "Narrow and wide field amacrine cells fire action potentials in response to depolarization and light stimulation." Visual Neuroscience 24, no. 2 (2007): 197–206. http://dx.doi.org/10.1017/s095252380707040x.

Full text

Abstract:

Action potentials in amacrine cells are important for lateral propagation of signals across the inner retina, but it is unclear how many subclasses of amacrine cells contain voltage-gated sodium channels or can fire action potentials. This study investigated the ability of amacrine cells with narrow (< 200 μm) and wide (> 200 μm) dendritic fields to fire action potentials in response to depolarizing current injections and light stimulation. The pattern of action potentials evoked by current injections revealed two distinct classes of amacrine cells; those that responded with a single act

APA, Harvard, Vancouver, ISO, and other styles

22

Kashkarov, Sergii, Mohammad Dadashzadeh, Srinivas Sivaraman, and Vladimir Molkov. "Quantitative Risk Assessment Methodology for Hydrogen Tank Rupture in a Tunnel Fire." Hydrogen 3, no. 4 (2022): 512–30. http://dx.doi.org/10.3390/hydrogen3040033.

Full text

Abstract:

This study presents a methodology of a quantitative risk assessment for the scenario of an onboard hydrogen storage tank rupture and tunnel fire incident. The application of the methodology is demonstrated on a road tunnel. The consequence analysis is carried out for the rupture of a 70 MPa, 62.4-litre hydrogen storage tank in a fire, that has a thermally activated pressure relief device (TPRD) failed or blocked during an incident. Scenarios with two states of charge (SoC) of the tank, i.e., SoC = 99% and SoC = 59%, are investigated. The risks in terms of fatalities per vehicle per year and th

APA, Harvard, Vancouver, ISO, and other styles

23

Protchenko, Kostiantyn, and Elżbieta Szmigiera. "Post-Fire Characteristics of Concrete Beams Reinforced with Hybrid FRP Bars." Materials 13, no. 5 (2020): 1248. http://dx.doi.org/10.3390/ma13051248.

Full text

Abstract:

One of the main concerns of experimental and numerical investigations regarding the behavior of fiber-reinforced polymer reinforced concrete (FRP-RC) members is their fire resistance to elevated temperatures and structural performance at and after fire exposure. However, the data currently available on the behavior of fiber-reinforced polymer (FRP) reinforced members related to elevated temperatures are scarce, specifically relating to the strength capacity of beams after being subjected to elevated temperatures. This paper investigates the residual strength capacity of beams strengthened inte

APA, Harvard, Vancouver, ISO, and other styles

24

Wang, Huan, Yongqing Zhao, Ping Guo, et al. "Study of the Intrinsic Factors Determining the Near-Threshold Fatigue Crack Propagation Behavior of a High-Strength Titanium Alloy." Metals 15, no. 1 (2025): 84. https://doi.org/10.3390/met15010084.

Full text

Abstract:

The resistance to near-threshold fatigue crack growth and its correlation with the microstructure of the Ti-5Al-3Mo-3V-2Zr-2Cr-1Nb-1Fe alloy were investigated. K-decreasing fatigue crack propagation rate tests were conducted on compact tension samples (ASTM standard) with a stress ratio R of 0.1 and a frequency of 15 HZ in a laboratory atmosphere. At a similar strength level of 1200 MPa, the sample with a fine basket-weave microstructure (F-BW) displayed the slowest near-threshold fatigue crack propagation rate compared with the samples with equiaxed (EM) and basket-weave (BW) microstructures.

APA, Harvard, Vancouver, ISO, and other styles

25

Komarova, M. A., I. A. Grishin, M. V. Shalabin, and N. O. Melnikov. "Development of test methods for fire-retardant coatings of steel engineering structures during operation." Bulletin of Science and Research Center of Construction 40, no. 1 (2024): 21–34. http://dx.doi.org/10.37538/2224-9494-2024-1(40)-21-34.

Full text

Abstract:

Introduction. Prediction of the durability of flame-retardant coatings of steel engineering structures and preservation of their performance during operation remain important research directions. There is a lack of normative documents in the field of fire protection, regulating the process of testing of flame-retardant coatings during operation, as well as determination of their durability (service life).Aim. To develop test methods for determining the resistance of flame-retardant coatings of steel engineering structures exposed to climatic factors, preservation of their fireproof and anti-co

APA, Harvard, Vancouver, ISO, and other styles

26

MUMINIYON, Alisher A., Yuri K. NAGANOVSKY, Vladimir M. ROITMAN, Boris B. SERKOV, Andrey B. SIVENKOV, and Ilya O. FEDOTOV. "Impact of long-term natural ageing of heat-insulating mineral wool materials on physicochemical and thermal transformations." Fire and Emergencies: prevention, elimination 3 (2024): 131–41. http://dx.doi.org/10.25257/fe.2024.3.131-141.

Full text

Abstract:

Purpose. The article studies physico-chemical and thermal transformations of mineral wool thermal insulation of natural ageing. The subject of the study is thermal insulation materials of natural ageing, and the object of the study is their physicochemical and thermal characteristics. The aim of the work is to establish physicochemical and thermal transformations of mineral thermal insulation of natural ageing. The research is aimed at identifying features of physico-chemical and thermal transformations of thermal insulation based on mineral fibers and organic binders in the ageing process. Me

APA, Harvard, Vancouver, ISO, and other styles

27

van Brederode, J. F. M., and A. J. Berger. "GAD67-GFP+ Neurons in the Nucleus of Roller. II. Subthreshold and Firing Resonance Properties." Journal of Neurophysiology 105, no. 1 (2011): 249–78. http://dx.doi.org/10.1152/jn.00492.2010.

Full text

Abstract:

In the companion paper we show that GAD67-GFP+ (GFP+) inhibitory neurons located in the Nucleus of Roller of the mouse brain stem can be classified into two main groups (tonic and phasic) based on their firing patterns in responses to injected depolarizing current steps. In this study we examined the responses of GFP+ cells to fluctuating sinusoidal (“chirp”) current stimuli. Membrane impedance profiles in response to chirp stimulation showed that nearly all phasic cells exhibited subthreshold resonance, whereas the majority of tonic GFP+ cells were nonresonant. In general, subthreshold resona

APA, Harvard, Vancouver, ISO, and other styles

28

Allen, Iris, Natalie Pawlikowski, Sophan Chhin, Michael Premer, and Jianwei Zhang. "Modeling Juvenile Stand Development and Fire Risk of Post-Fire Planted Forests under Variations in Thinning and Fuel Treatments Using FVS–FFE." Forests 14, no. 6 (2023): 1223. http://dx.doi.org/10.3390/f14061223.

Full text

Abstract:

In the past, the dry mixed conifer forests of California’s Sierra Nevada mountains experienced frequent low to mixed severity fires. However, due to fire suppression and past management, forest structure has changed, and the new fire regimes are characterized by large, high severity fires which kill a majority of the overstory trees. These new disturbance patterns require novel approaches to regenerate the forest as they are not adapted to large, high severity fires. We forecasted growth and fire behavior of young plantations for 100 years into the future using the Forest Vegetation Simulator

APA, Harvard, Vancouver, ISO, and other styles

29

Daibes, L. Felipe, Talita Zupo, Fernando A. O. Silveira, and Alessandra Fidelis. "A field perspective on effects of fire and temperature fluctuation on Cerrado legume seeds." Seed Science Research 27, no. 2 (2017): 74–83. http://dx.doi.org/10.1017/s096025851700006x.

Full text

Abstract:

AbstractInformation from a field perspective on temperature thresholds related to physical dormancy (PY) alleviation and seed resistance to high temperatures of fire is crucial to disentangle fire- and non-fire-related germination cues. We investigated seed germination and survival of four leguminous species from a frequently burned open Neotropical savanna in Central Brazil. Three field experiments were conducted according to seed location in/on the soil: (1) fire effects on exposed seeds; (2) fire effects on buried seeds; and (3) effects of temperature fluctuations on exposed seeds in gaps a

APA, Harvard, Vancouver, ISO, and other styles

30

Boriskov, Petr, and Andrei Velichko. "Switch Elements with S-Shaped Current-Voltage Characteristic in Models of Neural Oscillators." Electronics 8, no. 9 (2019): 922. http://dx.doi.org/10.3390/electronics8090922.

Full text

Abstract:

In this paper, we present circuit solutions based on a switch element with the S-type I–V characteristic implemented using the classic FitzHugh–Nagumo and FitzHugh–Rinzel models. Using the proposed simplified electrical circuits allows the modeling of the integrate-and-fire neuron and burst oscillation modes with the emulation of the mammalian cold receptor patterns. The circuits were studied using the experimental I–V characteristic of an NbO2 switch with a stable section of negative differential resistance (NDR) and a VO2 switch with an unstable NDR, considering the temperature dependences o

APA, Harvard, Vancouver, ISO, and other styles

31

Yan, Xiaobing, Yiduo Shao, Ziliang Fang, et al. "A low-power reconfigurable memristor for artificial neurons and synapses." Applied Physics Letters 122, no. 4 (2023): 042101. http://dx.doi.org/10.1063/5.0128200.

Full text

Abstract:

With the advancement of artificial intelligence technology, memristors have aroused the interest of researchers because they can realize a variety of biological functions, good scalability, and high running speed. In this work, the amorphous semiconductor material silicon carbide (SiC) was used as the dielectric to fabricate the memristor with the Ag/SiC/n-Si structure. The device has a power consumption as low as 3.4 pJ, a switching ratio of up to 105, and a lower set voltage of 1.26 V, indicating excellent performance. Importantly, by adjusting the current compliance, the strength of the for

APA, Harvard, Vancouver, ISO, and other styles

32

Sripati, Arun P., and Kenneth O. Johnson. "Dynamic Gain Changes During Attentional Modulation." Neural Computation 18, no. 8 (2006): 1847–67. http://dx.doi.org/10.1162/neco.2006.18.8.1847.

Full text

Abstract:

Attention causes a multiplicative effect on firing rates of cortical neurons without affecting their selectivity (Motter, 1993; McAdams & Maunsell, 1999a) or the relationship between the spike count mean and variance (McAdams & Maunsell, 1999b). We analyzed attentional modulation of the firing rates of 144 neurons in the secondary somatosensory cortex (SII) of two monkeys trained to switch their attention between a tactile pattern recognition task and a visual task. We found that neurons in SII cortex also undergo a predominantly multiplicative modulation in firing rates without affect

APA, Harvard, Vancouver, ISO, and other styles

33

Vorsah, Roger V., Beatrice N. Dingha, Harmandeep Sharma, and Louis E. Jackai. "Evaluation of Biorational Insecticides as Stand-alone Treatments for the Management of the Pigweed Flea Beetle, Disonycha glabrata (Coleoptera: Chrysomelidae), in Organic Production of Amaranthus spp." Sustainable Agriculture Research 9, no. 3 (2020): 58. http://dx.doi.org/10.5539/sar.v9n3p58.

Full text

Abstract:

The pigweed flea beetle, Disonycha glabrata, is the most damaging insect pest on Amaranthus spp. in the Piedmont zone of North Carolina (NC), United States. It is capable of causing severe yield loss on amaranth greens if uncontrolled. Field experiments were conducted over two growing seasons (Summer 2017 and 2018) in Greensboro, NC, to evaluate OMRI-approved biorational insecticides against D. glabrata in organic amaranth production. Insecticides evaluated included Azatin&reg; O (azadiractin), Ecotec&reg; (oils: rosemary, peppermint and geraniol), Entrust&reg; (spinosad) and PyGan

APA, Harvard, Vancouver, ISO, and other styles

34

van Brederode, J. F. M., Y. Yanagawa, and A. J. Berger. "GAD67-GFP+ Neurons in the Nucleus of Roller: A Possible Source of Inhibitory Input to Hypoglossal Motoneurons. I. Morphology and Firing Properties." Journal of Neurophysiology 105, no. 1 (2011): 235–48. http://dx.doi.org/10.1152/jn.00493.2010.

Full text

Abstract:

In this study we examined the electrophysiological and morphological properties of inhibitory neurons located just ventrolateral to the hypoglossal motor (XII) nucleus in the Nucleus of Roller (NR). In vitro experiments were performed on medullary slices derived from postnatal day 5 (P5) to P15 GAD67-GFP knock-in mouse pups. on cell recordings from GFP+ cells in NR in rhythmic slices revealed that these neurons are spontaneously active, although their spiking activity does not exhibit inspiratory phase modulation. Morphologically, GFP+ cells were bi- or multipolar cells with small- to medium-s

APA, Harvard, Vancouver, ISO, and other styles

35

Liu, Xiaoyu, Jie Zhu, and Zhongcheng Wang. "Study on Cold Start of Methanol Direct Injection Engine Based on Laser Ignition." Energies 18, no. 8 (2025): 2119. https://doi.org/10.3390/en18082119.

Full text

Abstract:

Methanol has garnered attention as a promising alternative fuel for marine engines due to its high octane number and superior knock resistance. However, methanol-fueled engines face cold-start challenges under low-temperature conditions. Laser ignition technology, an emerging ignition approach, shows potential to replace conventional spark ignition systems. This study investigates the effects of laser ignition on combustion and emission characteristics of direct-injection methanol engines based on methanol fuel combustion mechanisms using the AVL-Fire simulation platform, focusing on optimizin

APA, Harvard, Vancouver, ISO, and other styles

36

Ferrat, Lila, Frédéric Morandini, and Gauthier Lapa. "Influence of Prescribed Burning on a Pinus nigra subsp. Laricio Forest: Heat Transfer and Tree Vitality." Forests 12, no. 7 (2021): 915. http://dx.doi.org/10.3390/f12070915.

Full text

Abstract:

Surface fuel removal is crucial to facilitate the mitigation of severe fires in forests. Prescribed burning is often used by forest managers, thanks to its low cost and high efficiency in hard-to-reach areas. The determination of heat transfer between fires and trees has rarely been carried out on living species and consequently, their long-term effects on tree physiology are still not fully understood. In this study, a multidisciplinary approach was conducted to evaluate the impact of a late spring (June) prescribed burning on a Mediterranean pine forest (Pinus nigra subsp. laricio). The surf

APA, Harvard, Vancouver, ISO, and other styles

37

Beiranvandi, Mohammad. "Evaluation of seismic performance and design of AAC building systems (autoclaved aerated concrete) with different reinforcement methods." Nexo Revista Científica 36, no. 04 (2023): 572–95. http://dx.doi.org/10.5377/nexo.v36i04.16774.

Full text

Abstract:

Autoclaved lightweight concrete was produced for the first time in Sweden and after several decades, it has been widely used in most of the industrialized countries of the world, especially in the construction industry. Lightness, effect in reducing forces caused by earthquakes, ease of implementation, low thermal coefficient, fire resistance and sound insulation are among the undeniable advantages of this product. The use of this concrete is very effective in optimizing fuel and energy consumption, and its high compressive strength is considered an important feature, to the extent that it has

APA, Harvard, Vancouver, ISO, and other styles

38

Wu, Jason Y., and Jr Min Chang. "Effect of Wetting on the Pullout Resistance of Grouted Soil Nails." Applied Mechanics and Materials 226-228 (November 2012): 1304–7. http://dx.doi.org/10.4028/www.scientific.net/amm.226-228.1304.

Full text

Abstract:

In this research, laboratory pullout tests were conducted on grouted soil nails to study the effect of wetting on the interface shear resistance between nail and soil during pullout. Deformed bars with equal size to the true soil nails were used as model nails. The soil used was silty fine sand collected at the site and prepared to a very dense condition. Rainfall infiltration was simulated using duplicated soil nails inundated by water for different periods. Test results indicated that the peak pullout resistance strongly decreases upon wetting, with a reduction of about 60% after soaking for

APA, Harvard, Vancouver, ISO, and other styles

39

Thompson, Wei, Dunn, and O’Connor. "A System Dynamics Model Examining Alternative Wildfire Response Policies." Systems 7, no. 4 (2019): 49. http://dx.doi.org/10.3390/systems7040049.

Full text

Abstract:

In this paper, we develop a systems dynamics model of a coupled human and natural fire-prone system to evaluate changes in wildfire response policy. A primary motivation is exploring the implications of expanding the pace and scale of using wildfires as a forest restoration tool. We implement a model of a forested system composed of multiple successional classes, each with different structural characteristics and propensities for burning at high severity. We then simulate a range of alternative wildfire response policies, which are defined as the combination of a target burn rate (or inversely

APA, Harvard, Vancouver, ISO, and other styles

40

Marques, Francisco, Filipe G. A. Silva, Tiago E. F. Silva, Pedro A. R. Rosa, António T. Marques, and Abílio M. P. de Jesus. "Delamination of Fibre Metal Laminates Due to Drilling: Experimental Study and Fracture Mechanics-Based Modelling." Metals 12, no. 8 (2022): 1262. http://dx.doi.org/10.3390/met12081262.

Full text

Abstract:

Fibre metal laminates (FML) are significantly adopted in the aviation industry due to their convenient combination of specific strength, impact resistance and ductility. Drilling of such materials is a regular pre-requisite which enables assembly operations, typically through rivet joining. However, the hole-making operation is of increased complexity due to the dissimilarity of the involved materials, often resulting in defects (i.e., material interface delamination), which can significantly compromise the otherwise excellent fatigue strength. This work explores the potential of three differe

APA, Harvard, Vancouver, ISO, and other styles

41

R. Soomro, U. Arisar, and S. Qureshi. "HAIR-BASED CONCRETE REINFORCEMENT: A NOVEL APPROACH TO SUSTAINABLE AND COST-EFFECTIVE PAVEMENT CONSTRUCTION." Pakistan Journal of Scientific Research 5, no. 01 (2025): 10–19. https://doi.org/10.57041/vol5iss01pp10-19.

Full text

Abstract:

The increasing demand for sustainable and cost-effective construction materials has led to innovative approaches in concrete reinforcement. This study investigates the impact of human hair fibre as a reinforcement material in concrete pavements, focusing on variations in mechanical properties such as compressive strength, flexural strength, skid resistance, and workability. Human hair, an abundant and biodegradable waste material, possesses high tensile strength comparable to that of copper wire of similar diameter. Its integration into concrete provides potential benefits in enhancing structu

APA, Harvard, Vancouver, ISO, and other styles

42

Wilcox, K. S., M. J. Gutnick, and G. R. Christoph. "Electrophysiological properties of neurons in the lateral habenula nucleus: an in vitro study." Journal of Neurophysiology 59, no. 1 (1988): 212–25. http://dx.doi.org/10.1152/jn.1988.59.1.212.

Full text

Abstract:

1. The electroresponsive characteristics of neurons in the lateral habenula were studied with intracellular recordings in a brain slice preparation of guinea pig diencephalon maintained in vitro. One hundred and two neurons met the criteria for recording stability, and of these, 18 were analyzed in detail. For these 18 neurons, the mean resting membrane potential was -61.9 mV, the mean input resistance was 124 M omega, and the mean spike amplitude of fast action potentials was 60.3 mV. 2. Lateral habenula neurons were found to have distinct patterns of activity dependent on membrane potential.

APA, Harvard, Vancouver, ISO, and other styles

43

Singh, Er Dushyant, Er Kamalpreet Kaur, and Er Lovepreet Kaur. "A Final Study: The Role of Plastic-Modified Bitumen in Enhancing Durability and Sustainability in Road Construction." International Journal for Research in Applied Science and Engineering Technology 12, no. 9 (2024): 1498–507. http://dx.doi.org/10.22214/ijraset.2024.64384.

Full text

Abstract:

Abstract: This study systematically evaluates the influence of integrating varying percentages of plastic waste into bitumen on the mechanical properties and performance characteristics of bituminous pavements. Experimental results indicate that the incorporation of plastic waste enhances the performance of bitumen up to an optimal threshold of 8% by weight; exceeding this concentration results in negligible improvements or deterioration in performance. Rigorous laboratory assessments, including Dynamic Shear Rheometer (DSR) analyses, demonstrate that plastic-modified bitumen exhibits a signif

APA, Harvard, Vancouver, ISO, and other styles

44

Dieringa, Hajo, Norbert Hort, Soeren Mueller, and Karl Ulrich Kainer. "Compression Creep at 240°C of Extruded Magnesium Alloys Containing Gadolinium." Materials Science Forum 690 (June 2011): 270–73. http://dx.doi.org/10.4028/www.scientific.net/msf.690.270.

Full text

Abstract:

For uses at high temperatures, magnesium alloys containing rare earths have proven to be very suitable. High proportions of melting precipitates contribute to strengthening, even at temperatures above 200°C. If these alloys are extruded, their creep resistance rises even further due to the resulting fine-grained structure. In this paper, magnesium alloys with 10% Gd and additional small amounts of La and Nd are compared with WE43 for compression creep at temperatures of 240°C and stresses between 80 and 150 MPa. The minimum creep rates are determined and the stress exponent evaluated in accord

APA, Harvard, Vancouver, ISO, and other styles

45

Tennigkeit, F., D. W. Schwarz, and E. Puil. "Mechanisms for signal transformation in lemniscal auditory thalamus." Journal of Neurophysiology 76, no. 6 (1996): 3597–608. http://dx.doi.org/10.1152/jn.1996.76.6.3597.

Full text

Abstract:

1. During alertness, lemniscal thalamocortical neurons in the ventral medial geniculate body (MGBv) encode sound signals by firing action potentials in a tonic mode. When they are in a burst firing mode, characteristic of thalamic neurons during some sleep states, the same stimuli may have an alerting function, leading to conscious perception of sound. We investigated the intrinsic membrane properties of MGBv neurons in search of mechanisms that enable them to convert from burst to tonic firing modes, allowing accurate signal coding of sensory stimuli. 2. We studied thalamocortical relay neuro

APA, Harvard, Vancouver, ISO, and other styles

46

Dong, Hui Min, Xue Feng An, Xiao Su Yi, and Zheng Tao Su. "The Use of Quasi-Static Indentation Testing to Evaluate Low-Velocity Impact Resistance of Ex Situ Toughened Composite." Applied Mechanics and Materials 697 (November 2014): 35–40. http://dx.doi.org/10.4028/www.scientific.net/amm.697.35.

Full text

Abstract:

The aim of this study was to investigate the valuable impact damage parameters from quasi-static indentation testing to access the low-velocity impact behaviour of ex-situ toughened composites by comparing low-velocity impact and quasi-static test results (the same boundary conditions). In terms of the delamination damage threshold load and indentation depth, quasi-static tests predicted the impact damage resistance well. However, only very conservative estimates of maximum load due to the final fibre failure under higher energy level were achieved. This phenomenon is attributed to two factors

APA, Harvard, Vancouver, ISO, and other styles

47

Jiang, Chunlin, Guangjin Wang, Yanbo Zhang, and Jinglong Liang. "Study on the Liquefaction Mechanism of Mixed-Size Tailings Material Based on Grain Contact State Theory." Buildings 13, no. 7 (2023): 1808. http://dx.doi.org/10.3390/buildings13071808.

Full text

Abstract:

Tailings ponds serve as high-potential energy structures designed to store waste tailings and other industrial materials. However, they can give rise to significant environmental pollution and pose a substantial threat to social and economic development, as well as the safety of people’s lives and property. Seismic disasters can cause liquefaction of tailings, leading to destabilization and dam failure of tailings ponds, and the evolution of dynamic pore pressure of tailings can indirectly reflect the destabilization process of tailings ponds. Fine grain content is one of the main factors affe

APA, Harvard, Vancouver, ISO, and other styles

48

HEITLER, W. J., and K. FRASER. "Interactions of the Giant Fibres and Motor Giant Neurones of the Hermit Crab." Journal of Experimental Biology 133, no. 1 (1987): 353–70. http://dx.doi.org/10.1242/jeb.133.1.353.

Full text

Abstract:

A recent claim that the giant fibre of the hermit crab excites its contralateral motor giant neurone through a chemical rather than an electrical synapse (Stephens, 1986) was re-examined. We found that the reported increased latency (relative to the electrical ipsilateral synapse) was postsynaptic in origin, as was the increased spike ‘jitter’. There was no difference in synaptic latency between the electrical synapse and the supposed chemical one. We did not find a consistent resistance to N-ethylmaleimide (an uncoupler of electrical synapses) by the supposed chemical synapse, but the synapse

APA, Harvard, Vancouver, ISO, and other styles

49

Schwindt, Peter, Jennifer A. O'Brien, and Wayne Crill. "Quantitative Analysis of Firing Properties of Pyramidal Neurons From Layer 5 of Rat Sensorimotor Cortex." Journal of Neurophysiology 77, no. 5 (1997): 2484–98. http://dx.doi.org/10.1152/jn.1997.77.5.2484.

Full text

Abstract:

Schwindt, Peter, Jennifer A. O'Brien, and Wayne Crill. Quantitative analysis of firing properties of pyramidal neurons from layer 5 of rat sensorimotor cortex. J. Neurophysiol. 77: 2484–2498, 1997. Quantitative aspects of repetitive firing evoked by injected current steps and ramps were studied in layer 5 pyramidal neurons in brain slices of rat sensorimotor cortex to answer the following questions. Do the tonic firing properties of burst-firing and regular-spiking (nonbursting) neurons differ significantly? Does burst firing denote a discrete class of neurons or represent a continuum of firin

APA, Harvard, Vancouver, ISO, and other styles

50

Wang, Hui, Xin Cai, Chaomin Rao, Kewei Wang, and Jianmin Wang. "Mechanical and Electrical Properties of Rapid-Strength Reactive Powder Concrete with Assembly Unit of Sulphoaluminate Cement and Ordinary Portland Cement." Materials 15, no. 9 (2022): 3371. http://dx.doi.org/10.3390/ma15093371.

Full text

Abstract:

Fast-hardening cement can be used to quickly repair concrete constructions. Characterizing mechanical properties by electrical properties is a promising method to evaluate the mechanical performance nondestructively. However, little attention has been paid to this area. In this paper, copper-coated fine-steel-fibers-reinforced reactive powder concrete (RPC) with compound cement was manufactured. The mass ratio of sulphoaluminate and ordinary Portland cement in the compound cement was 1:1. The influence of copper-coated fine steel fibers with the volume increasing from 0 to 3.0% by the total vo

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!