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Bojan ?er?an Tamara Luki?Milka Bubalo-?ivkovi? Branislav ?ur?evRastislav Stojsavljevi? Milana Panteli? 《Renewable & Sustainable Energy Reviews》2012,16(3):1516-1527
Wood biomass in Serbia is traditionally used for energy. However, the manner of its use is outdated, and efficiency is very low. Annually over 3.5 million m3 of wood is cut down for energy needs in Serbia. In order to better exploit all forms of woody biomass, especially the one that is now treated as waste, and in order to fulfil the obligations from the outlined Convention on Climate Change it is necessary to switch to a modern way of production and utilization of woody biomass. Serbia is now at the very beginning of this process. This paper gives an overview and an analysis of the possibilities of utilization of wood waste as a renewable source of energy and the problems that producers in Serbia are facing due to undeveloped markets and excessive funds that are needed to start the production of briquettes and pellets. The ecological and economical advantages of using woody biomass, as well the possible support measures for the use of woody biomass in Serbia are also the topic of this paper. The present situation in this area, the manner of waste management in sawmills and the reasons for the necessity of future development of this industrial production are also briefly described. 相似文献
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Xu Xuan Khoshima Sina Karajic Milana Balderman Jan Markovic Katarina Scancar Janez Samardzija Zoran Sturm Saso Rozman Kristina Zuzek 《Journal of Applied Electrochemistry》2022,52(7):1081-1090
Journal of Applied Electrochemistry - The consumption of critical raw materials, especially those in permanent magnets of Nd–Fe–B and Sm–Co-type, has significantly grown in the... 相似文献
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Edoardo Milana Benjamin Gorissen Sam Peerlinck Michael De Volder Dominiek Reynaerts 《Advanced functional materials》2019,29(22)
In nature, liquid propulsion in low‐Reynolds‐number regimes is often achieved by arrays of beating cilia with various forms of motion asymmetry. In particular, spatial asymmetry, where the cilia follow a different trajectory in their effective and recovery strokes, is an efficient way of generating flow in low Reynolds regimes. However, this type of asymmetry is difficult to mimic and control artificially. In this paper, an artificial soft cilium that comprises two pneumatic actuators that can be controlled individually is developed. These two independent degrees of freedom allow for the first time adjustment and study of spatial asymmetry in the cilium's beating pattern. Using low‐Reynolds‐number flow measurements, it is confirmed that spatial asymmetry allows for the generation of fluid propulsion. These two‐degree‐of‐freedom soft cilia provide a platform to study ciliary fluid transport mechanisms and to mimic biologic viscous propulsion. 相似文献
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Benjamin Gorissen Edoardo Milana Arne Baeyens Eva Broeders Jeroen Christiaens Klaas Collin Dominiek Reynaerts Michael De Volder 《Advanced materials (Deerfield Beach, Fla.)》2019,31(3)
Soft robots are an interesting alternative for classic rigid robots in applications requiring interaction with organisms or delicate objects. Elastic in?atable actuators are one of the preferred actuation mechanisms for soft robots since they are intrinsically safe and soft. However, these pneumatic actuators each require a dedicated pressure supply and valve to drive and control their actuation sequence. Because of the relatively large size of pressure supplies and valves compared to electrical leads and electronic controllers, tethering pneumatic soft robots with multiple degrees of freedom is bulky and unpractical. Here, a new approach is described to embed hardware intelligence in soft robots where multiple actuators are attached to the same pressure supply, and their actuation sequence is programmed by the interaction between nonlinear actuators and passive ?ow restrictions. How to model this hardware sequencing is discussed, and it is demonstrated on an 8‐degree‐of‐freedom walking robot where each limb comprises two actuators with a sequence embedded in their hardware. The robot is able to carry pay loads of 800 g in addition to its own weight and is able to walk at travel speeds of 3 body lengths per minute, without the need for complex on‐board valves or bulky tethers. 相似文献
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Luciano Di Maio Paola Scarfato Maria Rosaria Milana Roberta Feliciani Massimo Denaro Giorgio Padula Loredana Incarnato 《Packaging Technology and Science》2014,27(7):535-547
The aim of the work was to manufacture, using a laboratory‐scale film production pilot plant, nanocomposite polylactic acid (PLA) films added with Cloisite 30B clay‐derived nanofiller having one nanometric dimension, and to characterize and to assess the migration of the obtained systems, in view of food packaging applications. The study demonstrated that it is possible to obtain nanocomposite PLA films with intercalated/exfoliated morphology of the dispersed layered nanofiller using conventional film production technologies. With increasing the silicate content in the film, the developed systems show a marked improvement of the mechanical performance, with a rise in the modulus and in the elongation at break with respect to the unfilled PLA, a significant lowering in the oxygen permeability and a slight increase in the surface wettability, without given significant alteration of film transparency and chromatic perception. Compared with the unfilled PLA, no significant changes can be observed about the migration behaviour of the nanocomposite PLA systems. In fact, both the overall migration and the specific migration, measured as lactic acid, remain always well below the applicable generic specific migration limit of 60 mg/kg food (10 mg/dm2) of the Regulation EU 10/2011. Copyright © 2013 John Wiley & Sons, Ltd. 相似文献
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Sacco William P.; Milana Suzette; Dunn Victoria K. 《Canadian Metallurgical Quarterly》1985,49(6):1728
Examined an interpersonal-process view of depression by assessing 60 undergraduates' reactions to a request for help from a hypothetical depressed or nondepressed person with whom they had been acquainted for a relatively short (2 wks) or long (1 yr) period of time. Ss responded to each of the 4 hypothetical persons by indicating their probable affective reactions to the request, the number of minutes they would be willing to help, their desire for future social contact with the hypothetical person, and their expectations of future requests for help. Results indicate that Ss felt significantly more concern and were willing to provide significantly more time for long-term acquaintances. Requests from depressed persons elicited significantly more anger and social rejection but equal amounts of concern and willingness to help. This mixed response pattern was interpreted as providing partial support for an interpersonal-process view of depression. A path analysis provided limited support for J. C. Coyne's (see record 1979-01146-001) hypothesis that rejection of depressed persons results from the negative mood they induce in others. (34 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献