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	题名	作者	年代	出处	被引量
1	Scour countermeasures for cylindrical piers using riprap and combination of collar and riprap显示文摘Various methods are proposed to control scouring around bridge piers. In the present study application of riprap alone and combinations of riprap and collar were examined experimentally for scour control around cylindrical bridge piers. Tests were conducted with seven riprap sizes and with two different sizes of collars. Empirical equations were developed for stable riprap diameter for two cases of piers with and without collar protection. Extent of riprap layer is also presented for these two cases. The results showed that in the range of b/dR≤7.5 (where b is pier diameter and dR is riprap size) using a collar reduced the stable riprap size. It was also concluded that using collar reduced the riprap layer extension in front and sides of the pier.	Amir R. ZARRATI Mohammad R. CHAMANI Abolfazl SHAFAIE Milad LATIFI	2010	International Journal of Sediment Research2010，25，3：	8
2	Reduction of local scour at river confluences using a collar显示文摘River confluences(RCs) are important features within river systems where the three dimensional(3 D)flow structures and the downstream mixing of flows can cause deep scour holes. Despite this, few methods have been proposed to control scouring at RCs. In this study, application of a collar was experimentally examined for local scour control at the point where two rivers flow together. In particular, experimental tests were done with and without collar application at three different locations. The results reveal that the scour depth is directly proportional to the discharge ratio, i.e. the ratio of lateral discharge to that in the channel downstream of the confluence, and the densimetric Froude number(Frg).In addition, installation of a collar at RCs can decrease the scour depth up to 100%, thus completely avoiding the scour process. The results also show that by increasing the Frg the optimal installation location for a collar changes and moves towards the river bed level. Using a collar can also reduce the height of the point bar formed downstream of the confluence. The outcomes of the study allow derivation of an equation for predicting scour depth when a collar is applied as a countermeasure. The analysis of this equation shows that the estimates are mostly affected by the Frg.	Nargess Amini Behnam Balouchi Mahmood Shafai Bejestan	2017	International Journal of Sediment Research2017，32，3：	2
3	Recovery of coal particles from a tailing dam for environmental protection and economical beneficiations显示文摘	M. Asghari M. Noaparast S. Z. Shafaie S. Ghassa S. Chehreh Chelgani	2018	International Journal of Coal Science & Technology2018，5，2：	2
4	Electromagnetic scattering from a dielectdc-coated elliptic cylinder显示文摘	Ragheb H A Shafai L	1988	Can J Phys1988，66，：	1
5	Balanced realization and model reduction of singular systems显示文摘	Shafai B	1994	Int Journal of Systems Sci1994，25，6：	1
6	Chronic ammonia toxicity to duckweed~fed tilapia (Oreochromis niloticus)显示文摘	El~Shafai SA El~Gohary FA Nasr FA	2004	Aquaculture2004，232，14：	1
7	Magnetic Bearing control systems and adaptive forced balancing显示文摘	SHAFAI B BEALE S LAROCCA P	1994	IEEE Control Systems Magazine1994，14，2：	1
8	Bandwidth enhancement and size reduction of microstrip slot antennas 显示文摘	LATIF S I SHAFAI L SHARMA S K	2005	IEEE Transactions on Antenna and Propagation2005，53，3：	1
9	A necessary and sufficient condition for the stability of nonnegative interval discrete systems显示文摘	SHAFAI B PEREV K COWLEY D	1991	IEEE Transactions on Automatic Control1991，36，6：	1
10	Investigation into the effects of the patch-type FSS superstrate on the high-gain cavity resonanceantenna design显示文摘	Foroozesh A Shafai L	2010	IEEE Transactions on Antennas & Propagation2010，58，2：	1
11	Fault diagnosis for heat pump switch parameter identification and clustering显示文摘	Zogg D Shafai E Geering H P	2006	Control Engineering Practice2006，14，12：	1
12	Performance of the progressive numerical method and its comparison with the modified spatial decomposition technique in solving large scattering problems显示文摘	Ye Q Shafai L	1998	IEE Proceedings-Microwaves Antennas and Propagation1998，145，2：	1
13	Fault diagnosis for heat pumps with parameter identification and clustering显示文摘	Zogg D Shafai E Geering H P	2006	Control Engineering Practice2006，14，12：	1
14	Magnetic Bearing Control Systems and Adaptive Forced Balancing显示文摘	Shafai B Beale S Larocca P etal	1994	Control Systems Magazine IEEE1994，14，12：	1
15	A progressive numerical method for depressing the internal resonances of scattering problems communications显示文摘	Qiubo Ye Shafai L	1997	Power and Computing Conference Proceedings1997，2223，：	1
16	Impedance characteristics of circular microstrip patches显示文摘	Antoszkiewicz K Shafai L	1990	IEEE Transactions on Antennas and Propagation1990，38，6：	1
17	Numerical assessment of unipolar corona ionised field quantities using the finite-element method显示文摘	Aboelsaad M M Shafai L Rashwan M	1989	IEEProceedings1989，136，2：	1
18	Investigation into the application of artificial magnetic conductors to bandwidth broadening, gainenhancement and beam shaping of low profile and conventional monopole antennas显示文摘	Foroozesh A Shafai L	2011	IEEE Transactions on Antennas &Propagation2011，59，1：	1
19	Investigation into the applica- tion of artificial magnetic conductors to bandwidth broad- ening, gain Enhancement and Beam Shaping of Low Pro- file and Conventional Monopole Antennas显示文摘	FOROOZESH A SHAFAI L	2011	IEEE Transac- tions on Antennas and Propagation2011，59，1：	1
20	The association of bacterial vaginosis 'and preterm labor显示文摘	Nejad VM Shafaie S	2008	J Pak Med Assoc2008，58，3：	1

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