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		题名	作者	年代	出处	被引量
	1	Age‐related bias in function of natural killer T cells and granulocytes after stress: reciprocal association of steroid hormones and sympathetic nerves显示文摘	K.SAGIYAMA M.TSUCHIDA H.KAWAMURA S.WANG C.LI X.BAI T.NAGURA S.NOZOE T.ABO	2003	Clinical & Experimental Immunology2003，，1：	1
	2	The Effect of Reflector with Sound-Absorbing Material on Supersonic Jet Noise显示文摘This paper describes an experimental work to investigate the effect of a reflector on supersonic jet noise radiated from a convergent-divergent nozzle with a design Mach number 2.0. In the present study, a metal reflector and reflectors made of three different sound-absorbing materials (grass wool and polyurethane foam) were employed,and the reflector size was varied. Acoustic measurement is carried out to obtain the acoustic characteristics such as frequency, amplitude of screech tone and overall sound pressure level (OASPL). A high-quality schlieren optical system is used to visualize the detailed structure of supersonic jet. The results obtained show that the acoustic characteristics of supersonic jet noise are strongly dependent upon the jet pressure ratio and the reflector size. It is also found that the reflector with sound-absorbing material reduces the screech tone amplitude by about 5-13dB and the overall sound pressure levels by about 2-5dB, compared with those of the metal reflector.	Y.-H.KWEON M.TSUCHIDA Y.MIYAZATO T.AOKI H.-D.KIM T.SETOGUCHI	2005	Journal of Thermal Science2005，14，1：	0

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