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211.
Olive tree (Olea europaea L.) leaf as a waste by‐product of table olive and olive oil industry: a review 下载免费PDF全文
Research into finding new uses for by‐products of table olive and olive oil industry are of great value not only to the economy but also to the environment where olives are grown and to the human health. Since leaves represent around 10% of the total weight of olives arriving at the mill, it is worth obtaining high added‐value compounds from those materials for the preparation of dietary supplements, nutraceuticals, functional food ingredients or cosmeceuticals. In this review article, olive tree (Olea europaea L.) leaf is reviewed as being a potential inexpensive, renewable and abundant source of biophenols. The importance of this agricultural and industrial waste is emphasised by means of describing its availability, nutritional and therapeutic effects and studies conducted on this field. © 2017 Society of Chemical Industry 相似文献
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A. A. Vasyutina A. E. Zasimov V. P. Kim A. N. Selin N. F. Starova O. V. Semenova V. P. Danilov 《Fibre Chemistry》1989,20(6):415-418
Conclusions Viscose textile yarn has been prepared by spinning in a zinc-aluminum-containing precipitation bath under manufacturing conditions.The yarn-spinning process in a zinc-aluminum-containing bath is stable, and is accompanied by an increased evolution of carbon disulfide and hydrogen sulfide.Viscose textile yarn spun in a zinc-aluminum-containing bath conforms to the All-Union State Standard and is characterized by a lower elongation and an increased swelling and shrinkage.Processes of warping and weaving the yarn have been carried out without any difficulties.O. M. Savchenko, senior engineer of the Klinsk Khimvolokno Industrial Association, also took part in this work.Translated from Khimicheskie Volokna, No. 6, pp. 34–35, November–December, 1988. 相似文献
215.
Yu. I. Zetser B. G. Gavrilov V. A. Zhmailo K. G. Gainullin V. I. Selin 《Combustion, Explosion, and Shock Waves》2004,40(6):638-648
The geomagnetic variations on the Earth's surface due to the magnetohydrodynamic stage of expansion of the plasma formation of highaltitude nuclear explosions are considered. It is shown that the distribution of the signal amplitudes in the distances from the source obeys a certain regularity. An analysis of measurement data and numerical modeling of the magnetohydrodynamic signal confirms that the temporal shape and phases of the signal are determined by its propagation by three channels: an electromagnetic wave in the atmosphere, highconductivity layers of the ionosphere, and the lithosphere, which possesses finite electrical conductivity. Agreement between the results of numerical modeling and measurements is obtained. A comparison of the disturbances caused by explosions and substorms indicate they are difficult to separate in the far field of the explosion. 相似文献
216.
The Sectoral Sweeper Scheme for Wireless Sensor Networks: Adaptive Antenna Array Based Sensor Node Management and Location Estimation 总被引:2,自引:0,他引:2
We introduce a novel sensor node management and location estimation method referred as sectoral sweeper (SS) scheme that uses an adaptive antenna array (AAA) at a central node in wireless sensor networks (WSNs). With the SS scheme, the central node can activate or deactivate the nodes in a desired region which is specified by beam direction and beam width of the transmit beam and also by minimum and maximum thresholds (R
min and R
max) for the received signal strength indicator (RSSI) of signals received by the nodes. In order to perform a specified task that is associated with a Task_id, two different beams are transmitted, which are task region beam and routing region beam to switch the nodes into active or routing modes. Since our scheme does not require any additional software or hardware for node management and location estimation in sensor nodes, the deficiencies of tiny sensors are effectively eliminated. The proposed scheme is shown to reduce the number of sensing nodes and the amount of data traffic in the network, thus leading to considerable savings in energy consumption and prolonged sensor lifetime.
Ayhan Erdogan graduated from Turkish Naval Academy, Istanbul, in 1992. He received the MSdegree from the Computer Engineering, Naval Sciences and Engineering Institute, Turkish Naval Academy, Istanbul, in 2003. He attended to a one year training on Automatic Data Processing (ADP) Officer in Middle East Technical University, Turkey, in 1996. He worked as a Project Officer for Turkish Armed Forces Integrated Communication Systems Project developed by Turkish General Stuff, from 1996 until 2001. He is currently a PhD student at the Electronics Engineering and Computer Science Department, Sabanci University, Istanbul, Turkey. His current research interests include Wireless Sensor Networks and Security for Ad hoc Networks.
Vedat Coskun was born in Istanbul, Turkey, in 1962. He was graduated from Turkish Naval Academy, Istanbul, Turkey, in 1984. He received the M.Sc. degree from the Computer Science Department, Naval Post Graduate School, CA, USA, in 1990 and the Ph.D. degree from the Computer Engineering Department, Yildiz Technical University, Istanbul, in 1998. He managed the wargaming software development group in Turkish Naval Military Wargaming Center for 5 years. Hewas teaching assistant, faculty member and chairman with the Computer Engineering Department, Turkish Naval Academy. He was part-time visiting professor with Gebze Institute of Technology. He is currently an Assistant Professor with the Department of Information Technology, ISIK University, Istanbul, Turkey. His current research interests include algorithm design, wireless sensor and actuator networks, and cryptography
Adnan Kavak was born in Usak, Turkey, in 1970. He received the B.S. degree from the Electrical and Electronics Engineering Department, Middle East Technical University, Ankara, Turkey, in 1992. He received the MS and PhD. degrees from the Electrical and Computer Engineering Department, The University of Texas at Austin, TX, USA, in 1996 and 2000, respectively. He was a satellite control engineer with Turksat Satellite Control Center, Ankara, Turkey, from December 1992 to May 1994. He worked as a Senior Research Engineer at Wireless Systems Laboratory, Samsung Telecommunications America in Richardson, TX, USA, from January 2000 to July 2001. He then joined Kocaeli University, Turkey, in August 2001 and worked as an Assistant Professor there until May 2005. Currently, he is the director ofWireless Communications and Information Systems (WINS) Research Center, and an Associate Professor with the Computer Engineering Department, Kocaeli University, Turkey. His current research interests include 3G and next generation wireless networks, software radios, smart antenna systems, resource allocation in 3G networks, and wireless sensor networks. 相似文献
217.
V. I. Vlasov S. A. Mokrushin V. P. Radchenko V. V. Selin A. A. Artamonov B. A. Zyryanov S. M. Vlasov A. S. Petrov E. F. Ratnikov 《Atomic Energy》1981,51(2):512-516
Conclusions The method considered has a quite high sensitivity for the appearance of the initial stage of onset of deviations from the normal course of the thermophysical processes in the core.The safety factor is determined more reliably from the start of transition to an unstable cycle of operation of the core.Translated from Atomnaya Énergiya, Vol. 51, No. 2, pp. 96–99, August, 1981. 相似文献
218.
Investigation of the relationships between two-dimensional pore geometrical data, from image analysis of thin sections, and initial water saturation, measured by conventional laboratory techniques on core plugs, reveals that the volumes of small pores within the pore space have strong influences on initial water saturation. A North American and a North Sea reservoir were investigated and empirical models specific to each reservoir show that 72% and 73% of the variance in initial water saturation can be explained by image data. The average amount that estimated initial water saturation differs from the experimentally measured initial water saturation is ± 3% and ± 3.5%, respectively, for the two reservoirs.It is also shown that the negative relationship between porosity or permeability and initial water saturation, which commonly have been used for prediction of saturation, are not universal but depend on the degree of pore size variation. Significant negative relationships between permeability and initial water saturation occur for rocks with relatively uniform pore systems but different pore sizes. For rocks with varying degrees of non-uniform pore systems, quantitative determination of pore structure is essential in order to estimate initial water saturation.The porosity classification technique used in this study is shown to be useful for determining the pore geometrical parameters which are significant for the prediction of initial water saturation. This technique could be used to evaluate initial water saturations of larger numbers of samples including samples too small for conventional testing. 相似文献
219.
Tsai H. Keyhani A. Demcko J.A. Selin D.A. 《Energy Conversion, IEEE Transaction on》1995,10(4):617-624
This paper presents a new approach to model synchronous generator saturation based on a feedforward artificial neural network (ANN) model. The machine loading conditions, excitation levels and rotor positions are all included in the modeling process. The nonlinear saturation characteristics of a three-phase salient-pole synchronous machine rated at 5 kVA and 240 V is studied using the ANN model. An appropriate selection of input/output pattern for the ANN model training based on an error back-propagation scheme is developed using the on-line small-disturbance responses and the well-known maximum-likelihood estimation algorithm. The developed ANN model is implemented in the generator dynamic transient stability study requiring only small computational alteration in saturation model representation 相似文献
220.