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One Health (OH) has gained considerable prominence since the beginning of the 21st century, among others, driven by the recent epidemics and the increasing importance of zoonotic diseases. Yet, despite the holistic and multidimens...
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One Health (OH) has gained considerable prominence since the beginning of the 21st century, among others, driven by the recent epidemics and the increasing importance of zoonotic diseases. Yet, despite the holistic and multidimensional nature of OH, to date, most emphasis has been on the interactions between animal and human health, with considerably less attention to environmental and plant health. However, there is growing evidence that the challenges of climate change, growing food and nutritional insecurity, and biodiversity loss can best be addressed within the context of the OH framework. Conceptionally, Integrated Pest Management (IPM) could perfectly fit into such an approach, but historically, IPM has been practiced very much in a compartmentalized manner. New approaches such as Regenerative Agriculture and Sustainable Intensification offer solutions to how to successfully embed IPM into a OH framework.
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Currently, windows and glass facades are increasingly being used as a building envelope.These are elements that are functional and aesthetic, but there is a need to focus on theirsafety. Windows as a part of protection system are ...
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Currently, windows and glass facades are increasingly being used as a building envelope.These are elements that are functional and aesthetic, but there is a need to focus on theirsafety. Windows as a part of protection system are one of the most vulnerable assets,so they need to be addressed. The paper is focused on the experimental investigationof two types of windows that are commonly used in buildings. The subjects ofthe interests are wooden frame windows and PVC frame windows. In the experiment,burglar resistance was investigate, carried out by dynamic tests with different weightsof steel balls dropped from various heights. Results of the experimental measurementpointed to the limit energy glass panels were broken. Windows with safety film were alsotested. The measured results were further evaluated.
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Sixteen-ply quasi-isotropic composite laminates of plain and interleaved AS4/3501-6 composite laminates clamped all around were impact tested to assess the improvement in impact resistance of composite laminates that have been int...
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Sixteen-ply quasi-isotropic composite laminates of plain and interleaved AS4/3501-6 composite laminates clamped all around were impact tested to assess the improvement in impact resistance of composite laminates that have been interleaved by electrospun Nylon-66 nanofabric. The impact velocity, force, and energy ranged from 2.0 to 4.0 m/s, 900 to 2100 N and 0.46 to 1.80 J, respectively. Based on this preliminary study, results showed that; polymer nanofabric interleaving marginally increased the laminate thickness, by about 2.0%. Polymer nanofabric interleaving increased the threshold impact force by about 60%, reduced the rate of impact damage growth rate to one-half with impact height and reduced impact damage growth rate from 0.115 to 0.105 mm~2/N with impact force. The concept has merit for more detailed study for optimizing and for multi-functionalizing fiber reinforced composite laminates.
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Learning how proteins fold will hardly have any impact on the way conventional active site centered drugs are designed. On the other hand, this knowledge is proving instrumental in defining a new paradigm for the identification of...
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Learning how proteins fold will hardly have any impact on the way conventional active site centered drugs are designed. On the other hand, this knowledge is proving instrumental in defining a new paradigm for the identification of drugs against any target protein: folding inhibition. Targeting folding renders drugs less susceptible to spontaneous genetic mutations that in many cases, notably in connection with retroviruses like the Human Immunodeficiency Virus (HIV), can abrogate drug effect. The progress which has taken place during the last years to understand which are the sequences of amino acids which code for a protein, and how to read from these sequences the associated three-dimensional, biologically active, native structure, constitutes the main subject of the present paper. From this narrative the idea of folding inhibitors emerges both naturally and, to some extent, inescapably.
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A feasibility study was conducted on the formation and preliminary characterisation of flexible impact resistant mechanically entaneled fabrics composed of high modulus polyethylene (HMPE) fibres. Light-weight protection fabrics w...
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A feasibility study was conducted on the formation and preliminary characterisation of flexible impact resistant mechanically entaneled fabrics composed of high modulus polyethylene (HMPE) fibres. Light-weight protection fabrics were manufactured with high impact resistance using spunlaced HMPE fibres. The effects of the applied water jet pressure and web layering on the fabric impact resistance were investigated and an indication of the ballistic resistance was obtained. The evidence suggests that web architecture influences fabric response to the punch test and increased isotropicity in terms of fibre arrangement appears to promote punch resistance Within the range of water pressures used in this study, increasing the water pressure tends to increase puncture resistance except for one of the samples (H200), which may be related to the increase in fabric density at higher pressures.
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This paper presents an experimental study exploring impact resistant properties of Kagome truss reinforced composite panels. Three types of panels with different materials and reinforcements, i.e., ultra-high-performance mortar, s...
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This paper presents an experimental study exploring impact resistant properties of Kagome truss reinforced composite panels. Three types of panels with different materials and reinforcements, i.e., ultra-high-performance mortar, steel fiber, and Kagome truss, were designed and manufactured. High-velocity projectile impact tests were performed to investigate the impact response of panels with dimensions of 200 mmx 200 mmx40 mm. The projectile used in the testing was a steel slug with a hemispherical front; the impact energy was 1 557 J. Test results showed that the Kagome truss reinforcement was effective at improving the impact resistance of panels in terms of failure patterns, damaged area, and mass loss. Synergy effects of a combination of Kagome truss and fiber reinforcements for the improvement of impact resistance capacity of ultra-high-performance mortar were also observed.
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The objectives of this study were to investigate the effect of impact energy and rubber thickness on the impact properties of layered steel/rubber/composite hybrid structures. Both stainless steel and mild steel based hybrid struc...
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The objectives of this study were to investigate the effect of impact energy and rubber thickness on the impact properties of layered steel/rubber/composite hybrid structures. Both stainless steel and mild steel based hybrid structures were investigated. The degree of damage, the failure modes, and the absorbed energy were studied. It was found that rubber between steel and composite layers absorbs the impact energy and decreases the interfacial and internal damage in the studied hybrid structure and in its components. The amount of the absorbed energy did not change substantially when comparing structures with and without rubber. However, the area of permanent damage showed a decrease of nearly 50% with the use of rubber when comparing a structure without rubber to a structure with 1.5 mm rubber. In addition, it was observed that the area of the damage is linearly dependent on the impact energy. The main damage mechanisms found were delamination at the steel/rubber and composite/rubber interfaces and fibre/matrix debond-ing in the composite layer.
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Compression molded glass epoxy laminates (0.65 W-f) were prepared out of BID woven (reference material), multiaxial and tailored multiaxial/uni-directional hybrid fabrics. Results showed that the properties of the hybrid fabric la...
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Compression molded glass epoxy laminates (0.65 W-f) were prepared out of BID woven (reference material), multiaxial and tailored multiaxial/uni-directional hybrid fabrics. Results showed that the properties of the hybrid fabric laminates compared very well with those of the BID laminates both in longitudinal and transverse loading directions, with the former exhibiting superior impact resistance. Hybridisation with UD fabrics has helped in enhancing the multiaxial laminate properties in the transverse direction without affecting its properties in the longitudinal direction. The compression strength of the hybridised laminate has been found to be comparable with that of the BID laminate but higher in the longitudinal and transverse directions as compared to the multiaxial laminate. [References: 5]
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The inherent resin-rich ply interfaces in laminar carbon fiber reinforced polymer (CFRP) composites are toughened by ultrathin interlays formed by Aramid pulp (AP) micro-/nanofibers, to show that stronger and more impact-resistant...
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The inherent resin-rich ply interfaces in laminar carbon fiber reinforced polymer (CFRP) composites are toughened by ultrathin interlays formed by Aramid pulp (AP) micro-/nanofibers, to show that stronger and more impact-resistant CFRP can be manufactured with minimum disruption to the current composite forming process. Flexible nonwoven AP micro-/nano-fibers, less than 1 mm in length, can conveniently fit in the uneven surface profiles or microresin-rich areas between carbon fiber plies and form in situ quasi-Z-directional fiber-bridging across the ply interfaces. CFRPs with multiple interfacial AP interlays estimated to be around 3 and 6 g/m(2) were tested before and after low energy impact. Ultrathin resin-rich ply-interface layers in plain CFRP were transformed into ultrathin "Short Aramid Fiber Epoxy" layers by the AP interlays (20-50 mu m in thickness), leading to enhanced compressive energy absorption and up to 86.7% increase in Compression-After-Impact Strength. Keeping the interlay thin (around 30 mu m or thinner if possible), even the compressive strength (without impact) is not compromised, and the energy absorption under compressive loading (without impact) is 130% higher. The distinctly different compressive failure mechanisms, delamination failure of the plain CFRP was transformed into matrix shear failure in AP-toughened CFRP, as identified by nondestructive X-ray microcomputed tomography scans. Scanning electron microscopy was performed on the failure surface to inspect the microscopic toughening mechanisms.
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Like sealants, adhesives, and grout, shims are common accessories throughout construction projects. Under many conditions, they are important to the success of a system and the project. Shims in glazing'systems must both accommoda...
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Like sealants, adhesives, and grout, shims are common accessories throughout construction projects. Under many conditions, they are important to the success of a system and the project. Shims in glazing'systems must both accommodate and resist the movement of those systems, preventing glass-to-glass or glass-to-metal contact, but yielding to pressure, thus reducing glass breakage. Though their footprints are small, shims can make big differences In the outcomes of construction projects.
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