Log in

Relevant bibliographies by topics / Barrier capacity / Journal articles

To see the other types of publications on this topic, follow the link: Barrier capacity.

Journal articles on the topic 'Barrier capacity'

Author: Grafiati

Published: 4 June 2021

Last updated: 6 February 2022

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 'Barrier capacity.'

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

Chen, Da Feng, He Jun Du, Wei Hua Li, and Hai Qing Gong. "Holding Capacity of a Dielectrophoretic Barrier for Microparticles." Key Engineering Materials 326-328 (December 2006): 281–84. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.281.

Full text

Abstract:

A dielectrophoretic barrier is generated with two layers of microelectrode structures so called paired electrode array (PEA) constructing face to face on the top and bottom sides of a microchannel. The barrier is designed to control the movement of particles in combination with a fluid flow. Depending on the relative strength of the DEP force and hydrodynamic force, microparticles or cells carrying by a laminar flow can either penetrate the barrier or be deflected from there. The threshold velocity at which the barrier firstly fails to hold back the particles is a significant parameter to validate the performance of the device. This paper presents an experimental study on the performance of the microfabricated paired electrode array. The electrodes were fabricated with conventional microfabrication techniques. Micron-sized latex beads were used in the investigation. The holding capacity was defined by measuring the threshold velocity of the system. The results provide crucial information for the design of the dielectrophoretic barrier for microparticle manipulation and separation.

APA, Harvard, Vancouver, ISO, and other styles

2

Wick, Peter, Antoine Malek, Pius Manser, Danielle Meili, Xenia Maeder-Althaus, Liliane Diener, Pierre-Andre Diener, Andreas Zisch, Harald F. Krug, and Ursula von Mandach. "Barrier Capacity of Human Placenta for Nanosized Materials." Environmental Health Perspectives 118, no. 3 (March 2010): 432–36. http://dx.doi.org/10.1289/ehp.0901200.

Full text

APA, Harvard, Vancouver, ISO, and other styles

3

Hilliard, James G., Eric D. Cambronne, Jeffrey R. Kirsch, and Michael F. Aziz. "Barrier protection capacity of flip-top pharmaceutical vials." Journal of Clinical Anesthesia 25, no. 3 (May 2013): 177–80. http://dx.doi.org/10.1016/j.jclinane.2012.07.006.

Full text

APA, Harvard, Vancouver, ISO, and other styles

4

Ng, C. W. W., D. Song, C. E. Choi, L. H. D. Liu, J. S. H. Kwan, R. C. H. Koo, and W. K. Pun. "Impact mechanisms of granular and viscous flows on rigid and flexible barriers." Canadian Geotechnical Journal 54, no. 2 (February 2017): 188–206. http://dx.doi.org/10.1139/cgj-2016-0128.

Full text

Abstract:

Structural countermeasures such as rigid and flexible barriers are commonly installed in mountainous regions to intercept mass-wasting processes. Without sufficient and reliable comparable physical data, the study of impact mechanisms remains difficult and not well understood. In this study, a newly developed flexible model barrier together with a rigid barrier are used to simulate either dry granular or viscous liquid impacts on these model barriers in a geotechnical centrifuge. The novel flexible barrier is made of four instrumented cables controlled by spring mechanisms to replicate a bilinear prototype loading response. Tests revealed that regardless of barrier type, both dry granular and viscous flows could have similar frontal dynamic impact coefficients around unity. Compared with the kinetic energy of flow mass (∼10 MJ), only 249 kJ of flexible barrier energy capacity was mobilized. This implies that debris-resisting barriers may only be required to intercept the dynamic flow front as the subsequent flow energy may mainly be dissipated through internal shearing. Attributing to the large deformation of the flexible barrier, the granular static load acting on the flexible barrier could be 39% lower than that on the rigid barrier, resulting in an active failure mode and a lower earth pressure.

APA, Harvard, Vancouver, ISO, and other styles

5

Khederzadeh, H., and K. Sennah. "Development of cost-effective PL-3 concrete bridge barrier reinforced with sand-coated glass fibre reinforced polymer (GFRP) bars: static load tests." Canadian Journal of Civil Engineering 41, no. 4 (April 2014): 368–79. http://dx.doi.org/10.1139/cjce-2013-0394.

Full text

Abstract:

One of the main factors concerning durability and service life of steel-reinforced bridges is corrosion of steel bars especially when exposed to a harsh environment. The use of glass fibre reinforcing polymer (GFRP) bars as non-corrosive material has emerged as an innovative solution to corrosion related problems, reduce the maintenance cost, and increase the service life of bridge structures. A recent cost-effective design of PL-3 bridge barrier was developed at Ryerson University incorporating high-modulus GFRP bars with headed ends. This paper presents results of full-scale static tests to collapse performed on the developed PL-3 bridge barrier at interior and exterior locations to investigate the ultimate load carrying capacity to be compared with Canadian Highway Bridge Design Code (CHBDC). The experimental ultimate load carrying capacity of the barriers was observed to be far greater than CHBDC factored design transverse load. The failure pattern was initiated by a trapezoidal crack pattern at the front face of the barrier, followed by punching shear failure at the transverse load location. Based on the punching shear failure developed in the barrier wall and comparison with available punching shear equations in the literature, an empirical punching shear equation is proposed to determine the transverse load carrying capacity of PL-3 bridge barrier walls reinforced with GFRP bars.

APA, Harvard, Vancouver, ISO, and other styles

6

Holmgren, A. Jay, Nate C. Apathy, and Julia Adler-Milstein. "Barriers to hospital electronic public health reporting and implications for the COVID-19 pandemic." Journal of the American Medical Informatics Association 27, no. 8 (June 1, 2020): 1306–9. http://dx.doi.org/10.1093/jamia/ocaa112.

Full text

Abstract:

Abstract We sought to identify barriers to hospital reporting of electronic surveillance data to local, state, and federal public health agencies and the impact on areas projected to be overwhelmed by the COVID-19 pandemic. Using 2018 American Hospital Association data, we identified barriers to surveillance data reporting and combined this with data on the projected impact of the COVID-19 pandemic on hospital capacity at the hospital referral region level. Our results find the most common barrier was public health agencies lacked the capacity to electronically receive data, with 41.2% of all hospitals reporting it. We also identified 31 hospital referral regions in the top quartile of projected bed capacity needed for COVID-19 patients in which over half of hospitals in the area reported that the relevant public health agency was unable to receive electronic data. Public health agencies’ inability to receive electronic data is the most prominent hospital-reported barrier to effective syndromic surveillance. This reflects the policy commitment of investing in information technology for hospitals without a concomitant investment in IT infrastructure for state and local public health agencies.

APA, Harvard, Vancouver, ISO, and other styles

7

Vacek, Vítězslav, and Jan Holub. "Options of Assessment of Absorption Capacity of Noise Barrier." Advanced Materials Research 923 (April 2014): 125–29. http://dx.doi.org/10.4028/www.scientific.net/amr.923.125.

Full text

Abstract:

The contribution deals with the possibilities of measuring the sound absorption coefficient of concrete panels. On the example of the modified concrete shows one of the possible methods that could be used to check for changes in the case of acoustic properties of restoration of the damaged panels. The issue of evaluation of the sound absorption coefficient is quite complex and difficult in the interpretation of the results, primarily due to the impact of the size of the tested element and parasitic interference in the surrounding environment.

APA, Harvard, Vancouver, ISO, and other styles

8

Fujimoto, Tomoko, Kohei Shirakami, and Kakuji Tojo. "Effect of Microdermabrasion on Barrier Capacity of Stratum Corneum." CHEMICAL & PHARMACEUTICAL BULLETIN 53, no. 8 (2005): 1014–16. http://dx.doi.org/10.1248/cpb.53.1014.

Full text

APA, Harvard, Vancouver, ISO, and other styles

9

LEE, SEUNG JOO, HEE CHANG JEON, TAE WON KANG, and SATOFUMI SOUMA. "DIMENSIONAL TRANSITIONS OF DENSITY OF STATES AND HEAT CAPACITY IN SPHERICAL QUANTUM DOTS." International Journal of Modern Physics B 22, no. 15 (June 20, 2008): 2373–82. http://dx.doi.org/10.1142/s0217979208039654.

Full text

Abstract:

We evaluate analytically and numerically the density of states (DOS) and the heat capacity in a spherical quantum dot formed by a spherical thin barrier. The control of the spherical barrier thickness or the potential barrier height is found to cause the dimensional transition from the three-dimensional (3D) behavior to the quasi-zero dimensional (Q0D) behavior in the DOS and the heat capacity. When the barrier is thick enough, the DOS shows the Q0D-like behavior but when the barrier is thin enough to allow electrons to tunnel through it, the temperature dependence of the heat capacity exhibits quite a distinct behavior depending on the electron density. Explicit numerical plots are given in the low density regime.

APA, Harvard, Vancouver, ISO, and other styles

10

Alves-Junior, Clodomiro, Dinnara L. S. da Silva, Jussier O. Vitoriano, Anne P. C. B. Barbalho, and Regina C. de Sousa. "The water path in plasma-treated Leucaena seeds." Seed Science Research 30, no. 1 (March 2020): 13–20. http://dx.doi.org/10.1017/s0960258520000045.

Full text

Abstract:

AbstractThe effects of cold atmospheric plasma (CAP) of dielectric barrier discharges on the wettability, imbibition and germination of Leucaena leucocephala were investigated. It was established that CAP treatment markedly hydrophilized the seed coat, especially at longer treatment times. From the profile of the imbibition curve and visual observation, it was possible to verify that there are two resistance barriers to water penetration: integument surface and region of the macrosclereid cell wall (light line). Although the plasma interacts only in the integument, increasing the density of hydrophilic sites increases the capacity of water absorption, producing enough driving force to overcome the second resistance barrier. The existence of these two barriers changes the three-phase pattern generally observed during seed germination. Despite an increase in imbibition, the plasma treatment conditions used in this work, were not enough to overcome completely the dormancy barrier.

APA, Harvard, Vancouver, ISO, and other styles

11

Ying, Kong Sih, Alex M. Remennikov, and Brian Uy. "Numerical Investigation of the Response of Protective Barrier under Blast Loading." Applied Mechanics and Materials 567 (June 2014): 440–45. http://dx.doi.org/10.4028/www.scientific.net/amm.567.440.

Full text

Abstract:

Non-composite steel-concrete-steel panels develop high load-carrying capacity through the tensile membrane resistance of the steel faceplates at large displacement. The response of a full-scale barrier structure composed of the non-composite SCS panels and steel posts under various blast loading scenarios was investigated using non-linear finite element software LS-Dyna. The simulation results showed that the barrier was able to withstand very large blast energy. It can be concluded that non-composite SCS panels can provide an attractive solution to expedite construction of high-performance protective barriers to resist extreme blast loadings.

APA, Harvard, Vancouver, ISO, and other styles

12

Chatthaworn, Rongrit, Pikkanate Angaphiwatchawal, and Surachai Chaitusaney. "Solar PV Policy, Barriers and Proposed Solution for Technical Barriers in Thailand." International Journal of Engineering & Technology 7, no. 4.36 (December 9, 2018): 1172. http://dx.doi.org/10.14419/ijet.v7i4.36.25379.

Full text

Abstract:

This paper presents solar PV history in Thailand consisting of installation target, incentive schemes, procurements and barriers for supporting the coming of solar PV. For the barrier viewpoint, one of the most significant barriers is the technical power system problem; especially, voltage violation and system loss increase when high capacity of solar PV is installed in the system. Therefore, electric utilities usually determine the capacity limitation criterion of solar PV for each electrical feeder which can delay the growth of solar PV installation. Consequently, this paper presents the method to solve this barrier in order to maximize the installation of solar PV in Thailand. The method is based on the construction of typical distribution feeders with various levels of solar PV penetration and locations. The three scenarios based on solar PV locations: clustered near the beginning of feeder, clustered near the middle of feeder, and clustered near the end of feeder are simulated. The considered constraints are voltage limitation and system loss. The modified distribution system is used to test the proposed method which is simulated by DIgSILENT PowerFactory software. The results show that the proposed method provides the solution that can support more solar PV installation than capacity limitation criterion determined by distribution utilities.

APA, Harvard, Vancouver, ISO, and other styles

13

Lieberman, Marvin B. "Excess Capacity as a Barrier to Entry: An Empirical Appraisal." Journal of Industrial Economics 35, no. 4 (June 1987): 607. http://dx.doi.org/10.2307/2098590.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

Godbole, Datta N., Natalia Kourjanskaia, Raja Sengupta, and Marco Zandonadi. "Breaking the Highway Capacity Barrier: Adaptive Cruise Control-Based Concept." Transportation Research Record: Journal of the Transportation Research Board 1679, no. 1 (January 1999): 148–57. http://dx.doi.org/10.3141/1679-20.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Zhou Xiao-Li and Du Pi-Yi. "Effect of barrier capacity on dielectric characteristics of ACu3Ti4O12 ceramics." Acta Physica Sinica 54, no. 1 (2005): 354. http://dx.doi.org/10.7498/aps.54.354.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Shirakami, Kohei, Tomohiro Hikima, and Kakuji Tojo. "Control of the Barrier Capacity of Stratum Corneum by Microdermabrasion." JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 41, no. 12 (2008): 1123–26. http://dx.doi.org/10.1252/jcej.08we169.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Sun, Hua, and Chao Tian. "Breaking the MDS-PIR Capacity Barrier via Joint Storage Coding." Information 10, no. 9 (August 22, 2019): 265. http://dx.doi.org/10.3390/info10090265.

Full text

Abstract:

The capacity of private information retrieval (PIR) from databases coded using maximum distance separable (MDS) codes was previously characterized by Banawan and Ulukus, where it was assumed that the messages are encoded and stored separably in the databases. This assumption was also usually made in other related works in the literature, and this capacity is usually referred to as the MDS-PIR capacity colloquially. In this work, we considered the question of if and when this capacity barrier can be broken through joint encoding and storing of the messages. Our main results are two classes of novel code constructions, which allow joint encoding, as well as the corresponding PIR protocols, which indeed outperformed the separate MDS-coded systems. Moreover, we show that a simple, but novel expansion technique allows us to generalize these two classes of codes, resulting in a wider range of the cases where this capacity barrier can be broken.

APA, Harvard, Vancouver, ISO, and other styles

18

Allen, Beth. "Capacity precommitment as an entry barrier for price-setting firms." International Journal of Industrial Organization 11, no. 1 (March 1993): 63–72. http://dx.doi.org/10.1016/0167-7187(93)90036-c.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Oliveira, M., Ana Vera Machado, and Regina Nogueira. "Development of Permeable Reactive Barrier for Phosphorus Removal." Materials Science Forum 636-637 (January 2010): 1365–70. http://dx.doi.org/10.4028/www.scientific.net/msf.636-637.1365.

Full text

Abstract:

Permeable reactive barriers were developed for phosphorus removal. The barrier consists in an organic-inorganic hybrid material, which allows water and others species to flow through it, while selectively removes the contaminants. Polyethylene oxide (POE) and aluminium oxide (Al2O3) were used as the organic and the inorganic parts, respectively. The hybrid material was obtained by sol-gel reaction, using aluminium isopropoxide as inorganic percursor in order to attain Al2O3. The hybrid material produced was characterized by FT-IR spectroscopy and thermogravimetry. The previous tests for phosphorus removal have shown the effectiveness capacity of the developed material to remove it.

APA, Harvard, Vancouver, ISO, and other styles

20

Rivard, Bruno, Yu Li, Pierre-Pascal Lenck-Santini, Bruno Poucet, and Robert U. Muller. "Representation of Objects in Space by Two Classes of Hippocampal Pyramidal Cells." Journal of General Physiology 124, no. 1 (June 14, 2004): 9–25. http://dx.doi.org/10.1085/jgp.200409015.

Full text

Abstract:

Humans can recognize and navigate in a room when its contents have been rearranged. Rats also adapt rapidly to movements of objects in a familiar environment. We therefore set out to investigate the neural machinery that underlies this capacity by further investigating the place cell–based map of the surroundings found in the rat hippocampus. We recorded from single CA1 pyramidal cells as rats foraged for food in a cylindrical arena (the room) containing a tall barrier (the furniture). Our main finding is a new class of cells that signal proximity to the barrier. If the barrier is fixed in position, these cells appear to be ordinary place cells. When, however, the barrier is moved, their activity moves equally and thereby conveys information about the barrier's position relative to the arena. When the barrier is removed, such cells stop firing, further suggesting they represent the barrier. Finally, if the barrier is put into a different arena where place cell activity is changed beyond recognition (“remapping”), these cells continue to discharge at the barrier. We also saw, in addition to barrier cells and place cells, a small number of cells whose activity seemed to require the barrier to be in a specific place in the environment. We conclude that barrier cells represent the location of the barrier in an environment-specific, place cell framework. The combined place + barrier cell activity thus mimics the current arrangement of the environment in an unexpectedly realistic fashion.

APA, Harvard, Vancouver, ISO, and other styles

21

Rubinigg, Michael, Ineke Stulen, J. Theo M. Elzenga, and Timothy D. Colmer. "Spatial patterns of radial oxygen loss and nitrate net flux along adventitious roots of rice raised in aerated or stagnant solution." Functional Plant Biology 29, no. 12 (2002): 1475. http://dx.doi.org/10.1071/fp02081.

Full text

Abstract:

Roots of rice (Oryza sativa L.) grown in stagnant de-oxygenated solution contain a 'tight' barrier to radial oxygen loss (ROL) in basal zones, whereas roots of plants grown in aerated solution do not. It is generally accepted that the barrier to ROL involves anatomical modifications in the apoplast of cell layers exterior to the aerenchyma. A possible drawback of this adaptation is a reduced capacity for nutrient uptake. Whether or not induction of a barrier to ROL influences the capacity of adventitious roots of rice to take up NO3– was determined in the present study, using NO3–-selective microelectrodes. When transferred into O2-free root medium, ROL from positions at 30–50 mm behind the tip of adventitious roots of plants raised in stagnant solution was only 4–6% of the rate from roots of plants raised in aerated solution, indicating the barrier to ROL was induced by growth in stagnant solution. For plants transferred into aerobic nutrient solution containing 0.1 mM NO3–, net NO3– uptake by these root zones, with or without a barrier to ROL, was the same. It is concluded that induction of a barrier to ROL had no effect on the capacity of adventitious roots of rice to take up NO3– from aerobic solution.

APA, Harvard, Vancouver, ISO, and other styles

22

Chia-Lai, Po-ju, Anna Orlowska, Sarah Al-Maawi, Andre Dias, Yunxin Zhang, Xuejiu Wang, Niklas Zender, Robert Sader, C. James Kirkpatrick, and Shahram Ghanaati. "Sugar-based collagen membrane cross-linking increases barrier capacity of membranes." Clinical Oral Investigations 22, no. 4 (December 6, 2017): 1851–63. http://dx.doi.org/10.1007/s00784-017-2281-1.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Allen, Beth, Raymond Deneckere, Tom Faith, and Dan Kovenock. "Capacity precommitment as a barrier to entry: A Bertrand-Edgeworth approach." Economic Theory 15, no. 3 (April 1, 2000): 501–30. http://dx.doi.org/10.1007/s001990050309.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Passaretti, Ma Gabriela, Mario D. Ninago, Carolina Di Anibal, Consuelo Pacheco, Daniel A. Vega, Marcelo A. Villar, and Olivia V. López. "Composite films with UV barrier capacity to minimize flavored waters degradation." Food Packaging and Shelf Life 21 (September 2019): 100334. http://dx.doi.org/10.1016/j.fpsl.2019.100334.

Full text

APA, Harvard, Vancouver, ISO, and other styles

25

Law, Raymond Pak Hei, Clarence Edward Choi, and Charles Wang Wai Ng. "Discrete-element investigation of influence of granular debris flow baffles on rigid barrier impact." Canadian Geotechnical Journal 53, no. 1 (January 2016): 179–85. http://dx.doi.org/10.1139/cgj-2014-0394.

Full text

Abstract:

Granular debris flow baffles are commonly installed in front of rigid barriers to dissipate flow energy and reduce the required barrier impact capacity. Despite the engineering value of baffles, their influence on rigid barrier impact is still not well understood. A previously calibrated discrete element method (DEM) model using a series of flume experiments was adopted to study the effectiveness of installing baffles in front of a rigid barrier. Froude scaling was used to characterize the flow front. Different baffle configurations were examined, namely number of rows, spacing between successive rows (L), and baffle height. Results reveal an optimum row spacing of L/D = 3 (D is the slit size). Row spacing less than L/D = 3 leads to increased peak dynamic force from overflow impacting the barrier, whereas row spacing greater than L/D = 3 results in increased peak dynamic force from the granular debris flow front. Increasing spacing greater than L/D = 3 allows the dispersion of debris between rows and decreases the effectiveness of the second row. Adopting baffle heights greater than 1.5 times the approach flow depth (h) reveals little influence on the peak impact force induced on the barrier.

APA, Harvard, Vancouver, ISO, and other styles

26

Rostami, Michael, Khaled Sennah, and Hamdy M. Afefy. "Ultimate capacity of barrier–deck anchorage in MTQ TL-5 barrier reinforced with headed-end, high-modulus, sand-coated GFRP bars." Canadian Journal of Civil Engineering 45, no. 4 (April 2018): 263–78. http://dx.doi.org/10.1139/cjce-2017-0002.

Full text

Abstract:

This paper presents an experimental program to justify the barrier design at the barrier–deck junction when compared to the factored applied transverse vehicular loading specified in the Canadian Highway Bridge Design Code (CHBDC). Compared to the dimensioning and the glass fibre reinforced polymer (GFRP) bar detailing of a recently crash-tested GFRP-reinforced barrier, the adopted barrier configurations in this paper were similar to those specified by Ministry of Transportation of Québec (MTQ) for TL-5 barrier except that the base of the barrier was 40 mm narrower and the deck slab is of 200 mm thickness, leading to reduction in the GFRP embedment depth into the deck slab. Four full-scale TL-5 barrier specimens were tested to collapse. Correlation between the experimental findings and the factored applied moments from CHBDC equivalent vehicle impact forces resulting from the finite-element modelling of the barrier–deck system was conducted followed by recommendations for use of the proposed design in highway bridges in Québec.

APA, Harvard, Vancouver, ISO, and other styles

27

Muhikambele, V. R. M., E. Owen, J. E. Owen, and L. A. Mtenga. "Capacity of goats to reach for food through tombstone barriers, as affected by position of food, body weight and body dimensions." Animal Science 66, no. 2 (April 1998): 415–22. http://dx.doi.org/10.1017/s1357729800009565.

Full text

Abstract:

AbstractGoat production systems increasingly involve indoor feeding. To facilitate manger design, there is need for information on the ability to reach for food, such as that for cattle given food through tombstone barriers. In the first study, 20 castrated and 20 non-pregnant female Saanens of mean live weight (M) 39·3 (s.d. 14·42) kg were trained to reach, through a vertical tombstone barrier, for concentrate meal placed on a horizontal platform attached to the barrier. The barrier allowed the neck but not the shoulders to pass through. It was hypothesized that horizontal reach forwards (F, distance from mid point of barrier to uneaten meal) and sideways (S, distances sideways from mid point of barrier to uneaten meal adjacent to barrier) would be a function of height of platform above the floor and size of goat. Because of size, eight goats (mean M, 16·4 kg) were unable to reach meal when the platform height was 75 cm. Mean (s.e.) values for F at platform heights 0, 25, 50 and 75 cm were 55·9 (0·68), 58·8 (0·64), 57·8 (0·69) and 41·1 (1·23) cm respectively. Values for S were smaller, but followed a similar pattern (49·4 (0·64), 52·4 (0·56), 53·2 (0·53), 36·6 (1·17) cm). Linear regression of either F or S on M and linear body dimensions (e.g. body length, neck and head length, neck-joint height, withers height) showed high correlations with R2 values being 0·8 or more. In the second study, 10 castrated and 10 non-pregnant females (M, 48·7 (s.d. 14·56) kg) were trained to reach through the tombstone barrier for concentrate pellets 'glued', using molasses, on to a vertical plate. It was hypothesized that vertical reach (V, distance from floor to uneaten pellets) would be a function of distance between barrier and plate (20, 30, 40, 45, 50 cm), height of step (0,14·2, 28·4, 42·6 cm) on which goats placed their forelegs and size of goat. Four goats (mean M, 29·9 kg) were unable to reach pellets when the plate was at 45 and 50 cm. Mean (s.e.) V values decreased with increasing plate distance and increased with step height (e.g. at 0 cm step, 122·4 (1·96), 116·9 (2·05), 109·4 (2·16), 103·9 (2·49) and 96·5 (2·75) at 20-; 30-; 40-; 45- and 50-cm plate distances respectively; at 20-cm plate distance, 122·4 (1·96), 137·5 (2·00), 151·3 (1·90) and 164·3 (2·00) cm at 0-; 14·2-; 28·4-and 42·6-cm step heights respectively). Linear regression of V on body weight and body dimensions (e.g. body length, heart girth, withers height) showed high correlations (R2 > 0·8). It is concluded that for practical purposes, body weight is a satisfactory predictor of reach. The results support the hypotheses. The data will facilitate the design of mangers for goats with body weights and dimensions in the range of those used in the present study.

APA, Harvard, Vancouver, ISO, and other styles

28

Ye, Dong, Mattia Bramini, Delyan R. Hristov, Sha Wan, Anna Salvati, Christoffer Åberg, and Kenneth A. Dawson. "Low uptake of silica nanoparticles in Caco-2 intestinal epithelial barriers." Beilstein Journal of Nanotechnology 8 (July 7, 2017): 1396–406. http://dx.doi.org/10.3762/bjnano.8.141.

Full text

Abstract:

Cellular barriers, such as the skin, the lung epithelium or the intestinal epithelium, constitute one of the first obstacles facing nanomedicines or other nanoparticles entering organisms. It is thus important to assess the capacity of nanoparticles to enter and transport across such barriers. In this work, Caco-2 intestinal epithelial cells were used as a well-established model for the intestinal barrier, and the uptake, trafficking and translocation of model silica nanoparticles of different sizes were investigated using a combination of imaging, flow cytometry and transport studies. Compared to typical observations in standard cell lines commonly used for in vitro studies, silica nanoparticle uptake into well-developed Caco-2 cellular barriers was found to be very low. Instead, nanoparticle association to the apical outer membrane was substantial and these particles could easily be misinterpreted as internalised in the absence of imaging. Passage of nanoparticles through the barrier was very limited, suggesting that the low amount of internalised nanoparticles was due to reduced uptake into cells, rather than a considerable transport through them.

APA, Harvard, Vancouver, ISO, and other styles

29

Khalil, Omar E. M., and Timothy Shea. "Knowledge Sharing Barriers and Effectiveness at a Higher Education Institution." International Journal of Knowledge Management 8, no. 2 (April 2012): 43–64. http://dx.doi.org/10.4018/jkm.2012040103.

Full text

Abstract:

In most of today’s academic circles, faculty knowledge is rarely shared with colleagues in the same institution in any meaningful or systematic way. This investigation sought answers to two questions regarding the faculty’s perceived knowledge sharing (KS) barriers and the influence that KS barriers may have on KS effectiveness. A data set was collected from seventy-six faculty members. The analysis revealed four key KS barriers, as bounded individual capacity is the most perceived barrier to KS, followed by inadequate organizational capability, fear of knowledge revelation, and knowledge nature. Fear of knowledge revelation was found to be the most influential barrier on KS effectiveness, as it influences three of the four KS effectiveness measures, namely awareness of research activities in one’s department, sharing of research knowledge with others in the institution, and satisfaction with sharing research knowledge with others in the institution. These findings contribute to the growing empirical KS research and provide an appropriate foundation for decision making and policy formulation aiming at fostering KS effectiveness in academe.

APA, Harvard, Vancouver, ISO, and other styles

30

Jackson, Russell E., and William M. Felton. "Barriers to Falling Risk." Proceedings of the Human Factors and Ergonomics Society Annual Meeting 61, no. 1 (September 2017): 1680–84. http://dx.doi.org/10.1177/1541931213601909.

Full text

Abstract:

Falling is a major health risk in workplaces and homes worldwide. Our efforts at falling prevention have made little impact in reducing the number or severity of falls in recent decades. These efforts focus on physical barriers, but neglect the ways that individuals react to those barriers. The current research used Evolved Navigation Theory in order to predict how barriers influence perception in falling risk scenarios. Participants in two experiments estimated surfaces varying in falling risk and barrier type. Experiment 1 identified that environmental perception unknowingly reflected falling risk. Experiment 2 identified specific perceptual differences that derived from differences in physical barriers. These data provide a new capacity to address a major worldwide health risk.

APA, Harvard, Vancouver, ISO, and other styles

31

Zhang, M. B., J. Y. Mei, and B. Zhou. "Research on the improvement of hydrologic emergency monitoring capacity of barrier lake." IOP Conference Series: Earth and Environmental Science 612 (December 10, 2020): 012020. http://dx.doi.org/10.1088/1755-1315/612/1/012020.

Full text

APA, Harvard, Vancouver, ISO, and other styles

32

Marszałek, Jan, Mieczysław Piechota, and Bartłomiej Wójtowicz. "Analysis of the BP-150M barrier carrying capacity according to MLC standards." Bulletin of the Military University of Technology 66, no. 3 (September 30, 2017): 111–24. http://dx.doi.org/10.5604/01.3001.0010.5395.

Full text

Abstract:

The article includes an analysis of the possibility of a temporary combined crossing using the DMS-65 bridge construction and the BP-150M floating barge support. In order to shorten the construction time of the crossing, traditional floating supports are replaced. Examples of nomograms were developed, using the method of a compensation function of moments at supports. Load analysis according to MLC standards has made it possible to determine the parameters of crossing over the Abrams M1A2 tank bridge. Keywords: building engineering, folding bridges, floating supports

APA, Harvard, Vancouver, ISO, and other styles

33

Miyamoto, M., K. Watababe, and Y. Imai. "Buffer capacity of gastic fluid and its effect on the mucous barrier." Seibutsu Butsuri 39, supplement (1999): S204. http://dx.doi.org/10.2142/biophys.39.s204_4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

34

Mathis, Stephen, and Janet Koscianski. "Excess capacity as a barrier to entry in the US titanium industry." International Journal of Industrial Organization 15, no. 2 (April 1997): 263–81. http://dx.doi.org/10.1016/0167-7187(95)01003-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Wirth, E., F. Munnik, L. L. Pranevičius, and D. Milcius. "Dynamic surface barrier effects on hydrogen storage capacity in Mg–Ni films." Journal of Alloys and Compounds 475, no. 1-2 (May 2009): 917–22. http://dx.doi.org/10.1016/j.jallcom.2008.08.036.

Full text

APA, Harvard, Vancouver, ISO, and other styles

36

Chingombe, Wisemen, and Happwell Musarandega. "Understanding the Logic of Climate Change Adaptation: Unpacking Barriers to Climate Change Adaptation by Smallholder Farmers in Chimanimani District, Zimbabwe." Sustainability 13, no. 7 (March 29, 2021): 3773. http://dx.doi.org/10.3390/su13073773.

Full text

Abstract:

Smallholder farmers in Chimanimani District, Zimbabwe, have grappled for a long time with the effects of climate change despite the locally and externally driven resilience-building initiatives in place. This paper adopts a qualitative approach to explore the encountered adaptation barriers. Smallholder farmers, Agricultural Technical and Extension Services (AGRITEX) officers, and the traditional leadership fraternity were randomly selected from the district’s 22 rural wards as study participants. Data were solicited using focus group discussions and face-to-face interviews that were corroborated by researcher observation methods. The data were analysed using thematic content analysis of key perspectives drawn from smallholder farmers, traditional leaders, and extension officers who work with farmers. What was unveiled is an assortment of barrier dynamics related to climate, finance, infrastructure, generational change, water resources, inefficient bureaucracy, gender inequality, and health barriers. Vensim PLE 7.3 software was used to illustrate barrier components as they act together to cripple smallholder farmers’ efforts to raise their adaptive capacity. Adaptation barriers are complex and, therefore, cannot be addressed using policies that are fragmented. The paper recommends a multidimensional approach by policy makers to analyse adaptive barriers to build more climate resilience within smallholder farmer communities.

APA, Harvard, Vancouver, ISO, and other styles

37

Oviedo, Antonio F. P., Marcel Bursztyn, Saulo R. Filho, and Diego Lindoso. "Adaptive Management to Climate Change and Its Barriers in the Brazilian Amazon." Research in Agriculture 4, no. 1 (August 29, 2019): p10. http://dx.doi.org/10.22158/ra.v4n1p10.

Full text

Abstract:

Studies on barriers to climate change adaptation identify many underlying drivers but describe few processes whereby adaptation is implemented. We contribute to the literature by describing how adaptive capacity relates to project cycle in small-scale communities where local stakeholders combine knowledge and barriers affecting adaptive management. Our study focused on two floodplain landscapes in the Brazilian Amazon where fisheries were identified as a current concern, potentially leading to future social conflict if not properly addressed. At both sites, we adopted participatory research to design an adaptive management framework for the analysis of socio-ecological barriers influencing local decision-making by fishermen and farmers. The comparative analysis provided insights into several actions that could support overcoming barriers to the governance of natural resources in each phase of the project cycle. Adaptation actions included fostering local participation and tools to facilitate knowledge generation and revising the role of the central government in natural resource management. We found that due to the slow capacity to adapt their practices, institutions regulating fisheries tend to work as a barrier for adaptation processes.

APA, Harvard, Vancouver, ISO, and other styles

38

Zhang, Chunmei, Yalong Jiao, Tianwei He, Fengxian Ma, Liangzhi Kou, Ting Liao, Steven Bottle, and Aijun Du. "Two-dimensional GeP3 as a high capacity electrode material for Li-ion batteries." Physical Chemistry Chemical Physics 19, no. 38 (2017): 25886–90. http://dx.doi.org/10.1039/c7cp04758d.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Ayuso, Carmen Fernández, Alejandro Arribas Agüero, Jose A. Plaza Hernández, Antonio Bódalo Santoyo, and Elisa Gómez Gómez. "High Oxygen Barrier Polyethylene Films." Polymers and Polymer Composites 25, no. 8 (October 2017): 571–82. http://dx.doi.org/10.1177/096739111702500802.

Full text

Abstract:

“Layer by layer” technology was used to create transparent, thin and high barrier polyethylene films to use in food packaging. These films were made by inserting successive layers of polyacrylamide and montmorillonite (Cloisite Na+, non-organic modification) grown onto a low density polyethylene (LDPE) film substrate submitted to corona treatment. Excellent oxygen permeability results were reached with only 9 bilayers, with a reduction of 99.92%, compared to the pure polyethylene. This allowed the oxygen barrier film to change from poor to high (3.66 cm3/m2·day), with a total thickness of 48 microns, due to the structure formed over the film to create a tortuous path for oxygen molecules. Optical properties were analysed, showing a ≥92% transparency in all samples. Thermal stability of polyethylene was slightly improved and this was attributed to nanoclays presence forming an insulating layer. The result of this research is a thin structured film which is a good candidate for common barrier films replacement in food packaging thanks to its high oxygen barrier capacity, optical transparency, microwaveability and recyclability.

APA, Harvard, Vancouver, ISO, and other styles

40

Kaczmarek, Piotr M. J. "Hydraulic conductivity changes in river valley sediments caused by river bank filtration – an analysis of specific well capacity." Geologos 23, no. 2 (June 27, 2017): 123–29. http://dx.doi.org/10.1515/logos-2017-0013.

Full text

Abstract:

Abstract Parameters from archive data of the Kalisz-Lis waterworks, located in the Prosna River valley south of Kalisz, have been analysed. Well barrier discharges groundwater from Quaternary sediments which is mixed with riverbank filtration water. The analysis focused on specific well capacity, a parameter that represents the technical and natural aspects of well life. To exclude any aging factor, an examination of specific well capacity acquired only in the first pumping tests of a new well was performed. The results show that wells drilled between 1961 and 2004 have similar values of specific well capacity and prove that > 40 years discharge has had little influence on hydrodynamic conditions of the aquifer, i.e., clogging has either not occurred or is of low intensity. This implies that, in the total water balance of the Kalisz- Lis well barrier, riverbank filtration water made little contribution. In comparison, a similar analysis of archive data on the Mosina-Krajkowo wells of two generations of well barriers located in the Warta flood plains was performed; this has revealed a different trend. There was a significant drop in specific well capacity from the first pumping test of substitute wells. Thus, long-term groundwater discharge in the Warta valley has had a great impact on the reduction of the hydraulic conductivity of sediments and has worsened hydrodynamic conditions due to clogging of river bed and aquifer, which implies a large contribution of riverbank filtration water in the total water well balance. For both well fields conclusions were corroborated by mathematical modeling; in Kalisz-Lis 16.2% of water comes from riverbank filtration, whereas the percentage for Mosina-Krajkowo is 78.9%.

APA, Harvard, Vancouver, ISO, and other styles

41

Zhao, Tianshan, Shunhong Zhang, Yaguang Guo, and Qian Wang. "TiC2: a new two-dimensional sheet beyond MXenes." Nanoscale 8, no. 1 (2016): 233–42. http://dx.doi.org/10.1039/c5nr04472c.

Full text

APA, Harvard, Vancouver, ISO, and other styles

42

KOBAYASHI, Kaoru, Kazunobu MATSUMOTO, Satoru NAKAFUSA, Toshihiro MORII, and Tomoyoshi NISHIMURA. "Effect of compaction density of sand layer on diversion capacity of capillary barrier." Japanese Geotechnical Journal 9, no. 4 (2014): 591–602. http://dx.doi.org/10.3208/jgs.9.591.

Full text

APA, Harvard, Vancouver, ISO, and other styles

43

Wight, Daniel, Josephine Ahikire, and Joy C. Kwesiga. "Consultancy research as a barrier to strengthening social science research capacity in Uganda." Social Science & Medicine 116 (September 2014): 32–40. http://dx.doi.org/10.1016/j.socscimed.2014.06.002.

Full text

APA, Harvard, Vancouver, ISO, and other styles

44

&NA;. "Early postnatal maturation of intestinal barrier function and absorptive capacity in preterm neonates." European Journal of Gastroenterology & Hepatology 13, no. 12 (December 2001): A3. http://dx.doi.org/10.1097/00042737-200112000-00032.

Full text

APA, Harvard, Vancouver, ISO, and other styles

45

Choi, Keechoo, Jeong-Hyun Kim, and Kangwon Shin. "Economic feasibility analysis of roadway capacity expansion with accounting traffic noise barrier cost." KSCE Journal of Civil Engineering 8, no. 1 (January 2004): 117–27. http://dx.doi.org/10.1007/bf02829087.

Full text

APA, Harvard, Vancouver, ISO, and other styles

46

Song, D., Gordon G. D. Zhou, Min Xu, C. E. Choi, S. Li, and Y. Zheng. "Quantitative analysis of debris-flow flexible barrier capacity from momentum and energy perspectives." Engineering Geology 251 (March 2019): 81–92. http://dx.doi.org/10.1016/j.enggeo.2019.02.010.

Full text

APA, Harvard, Vancouver, ISO, and other styles

47

Sun, Bo, Weijun Wang, Min Zhang, and Mohini Sain. "Biomass-based edible film with enhanced mass barrier capacity and gas permeable selectivity." Cellulose 25, no. 10 (August 9, 2018): 5919–37. http://dx.doi.org/10.1007/s10570-018-1976-z.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Anthony, K. R. N. "Enhanced particle-feeding capacity of corals on turbid reefs (Great Barrier Reef, Australia)." Coral Reefs 19, no. 1 (April 18, 2000): 59–67. http://dx.doi.org/10.1007/s003380050227.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Silveira, Roger Lanes, Rosilene Andréa Machado, Carla Roberta de Siqueira Silveira, and Rogério Belle Oliveira. "Bone repair process in calvarial defects using bioactive glass and calcium sulfate barrier." Acta Cirurgica Brasileira 23, no. 4 (August 2008): 322–28. http://dx.doi.org/10.1590/s0102-86502008000400005.

Full text

Abstract:

PURPOSE: To analyze bone repair process in Wistar rats' calvaria, with the use of two different biomaterials. METHODS: Forty two male Wistar rats were used, and four bicortical cranial cavities were created in each animal. The cavities were filled with: bioactive glass (BG); calcium sulfate barrier (CSB); bioactive glass covered with calcium sulfate barrier (BG/CSB); and autogenous blood clot (control). The animals were euthanized 7, 14, 21, 30, 60, 90, e 120 days after surgery. The scalps were removed and submitted to a routine process for histological preparation: staining with Haematoxylin and Eosin (HE). RESULTS: The BG was not completely resorbed; however, after 60 days, a decrease in size as well as a change in the morphological granule were observed. CSB was not observed in the last group (after 120 days). CONCLUSIONS: In Wistar rat calvaria bioactive glass, in an isolated form, negatively interfered in the bone repair process; the calcium sulfate barrier, in an isolated form, presented the capacity to maintain space, allowing the flow of osteogenic cells; the bioactive glass covered with calcium sulfate barrier association presented a better osteoconductive capacity when compared to isolated materials; calcium sulfate barrier was completely resorbed after 90 days; control cavities did not completely heal until 120 days after surgery.

APA, Harvard, Vancouver, ISO, and other styles

50

Čech, Jindřich, Jiří Kolísko, Petr Tej, Petr Pokorný, and Alena Kohoutkova. "Experimental and Theoretical Analysis of I-Pillars of Noise Barriers Made of Prestressed Steel Fiber Concrete, Prestressed Concrete and Reinforced Concrete with Footings Length of 600 mm." Key Engineering Materials 709 (September 2016): 105–8. http://dx.doi.org/10.4028/www.scientific.net/kem.709.105.

Full text

Abstract:

This paper deals with the experimental testing and theoretical analysis of the flexural load-bearing capacity of I-shaped pillars in noise barriers made of reinforced concrete, prestressed concrete and prestressed steel fiber reinforced concrete. The pillars were loaded as a cantilever under a flexural load, which corresponds to their actual loading when the effect of wind on the panels of the noise barrier is taken into account. For the purpose of the present research, three specimens of I-pillars were tested. The results of the experimental loading tests, as well as the calculated results and the comparison between them, are herein presented.

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!