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1DUAL-BAND INFRARED DETECTORS显示文摘As the infrared technology continues to advance, there is a growing demand for multispectral detectors for advanced IR systems with better target discrimination and identification. Both HgCdTe detectors and quantum well GaAs/AlGaAs photodetectors offer wavelength flexibility from medium wavelength to very long wavelength and multicolor capability in these regions. The main challenges facing all multicolor devices are more complicated device structtures, thicker and multilayer material growth, and more difficult device fabrication, especially when the array size gets larger and pixel size gets smaller. In the paper recent progress in development of two color HgCdTe photodiodes and quantum well infrared photodetectors is presented. More attention is devoted to HgCdTe detectors. The two color detector arrays are based upon an n P N (the capital letters mean the materials with larger bandgap energy) HgCdTe triple layer heterojunction design. Vertically stacking the two p n junctions permits incorporation of both detectros into a single pixel. Both sequential mode and simultaneous mode detectors are fabricated. The mode of detection is determined by the fabrication process of the multilayer materials. Also the performances of stacked multicolor QWIPs detectors are presented. For multicolor arrays, QWIP’s narrow band spectrum is an advantage, resulting in low spectral crosstalk. The major challenge for QWIP is developing broadband or multicolor optical coupling structures that permit efficient absorption of all required spectral bands.A. Rogalski  (Institute of Applied Physics, Military University of Technology, 2 Kaliskiego St., 00 908 Warsaw, Poland) 2000红外与毫米波学报2000,19,4:12
2The reconstruction and interpretations of lake status at 6 ka and 18 ka B.P.in inland mainland Asia显示文摘By means of survey of literature through compilations of sedimentological, biogeological and geomorphologic data, the inland lake level changes in arid or semi arid mainland Asia at 6 and 18 ka B.P. have been reconstructed. The results showed that the lakes from western and northwestern Asia were characterized by very high water levels at 18 ka B.P., but low or intermediate water stands at 6 ka B.P. The high lake level in this region was associated with the southward displacement of westerlies, therefore, the extent of the high lake stand indicated the southern flank of westerlies during the glaciation. Conversely, the lakes from the eastern and southern Asia registered comparative low levels at 18 ka B.P. and significantly high one at 6 ka B.P. The lowering of lake level at 18 ka B.P. was caused by the weakened summer monsoon and the high lake level at 6 ka B.P. by the enhanced summer monsoon induced by the enlarged thermal contrast between land and ocean. The extent of high lake levels indicated the northern boundary of monsoon expansion. Between the above two regions, there is a climatic transitional zone in the Central Asia where the lake behavior was close to that in southeastern Asia at 6 ka B.P. but became similar to that in northwestern Asia at 18 ka B.P. Thus this zone became a transitional sector from the monsoon to the westerlies.QIN Boqiang 1, SHI Yafeng 1 and YU Ge 2, 3 1. Nanjing Institute of Geography & Limnology, Chinese Academy of Sciences, Nanjing 210008, China 2. Dynamic Palaeoclimatology, Lund University, PO Box 117, S 221 00, Lund, Sweden 3. Department of 1998Chinese Science Bulletin1998,43,14:2
3Fournier's gangrene complicating ruptured Richter's inguinal hernia 显示文摘Onakpoya UU Lawal 00 Onovo OD 2007West Afr J Med2007,26,4:1
4Validity of the Pittsburgh Sleep Quality Index ( PSQI) among Nigerian university students 显示文摘Aloba 00 Adewuya AO Ola BA 2007Sleep Med2007,8,3:1
5B-cell delivered gene therapy for tolerance induction: role of autoantigen-specific B cells显示文摘Zhang AH Li X Onabajo 00 2010J Autoim?mun2010,35,2:1
6Relationship between serum uric acid concentration and insulin resistance and metabolic syndrome显示文摘Y 00 TWl Sung KC Shin HS 2005CircJ2005,69,8:1
7Characteristics of the myopic patient population applying for refractive surgery 显示文摘Uakhan 00 Sokol J Brodie SE 2000CLAO J2000,26,2:1
8Adverse events associated with anterior cervical spine surgery 显示文摘Daniels A H Riew K D Y 00] U 2008J Am Acad Orthop Sur2008,16,12:1
9Effect of pH and ionic strength on boron re-moval by RO membranes显示文摘00 M H SONG L F 2009Desalination2009,246,:1
10Electrocardiographic left ventricular hypertrophy and outcome in hemodialysis patients 显示文摘Kim SJ Oh HJ Y 00 DE 2012PLOS ONE2012,7,35:1
11The N1H registry on use of the Wingspan stent for symptomatic 70 -99% intracranial ar- terial stenosis显示文摘Zaidat 00 K!ueznik R Alexander MJ 2008Neurology2008,70,17:1
12Effect of Boron on the Structure and Mechanical Properties of Ti- 6A1 and Ti-6A1-4V 显示文摘BILOUS 00 ARTYUKH L V BONDAR A A 2005Materials Science and Engineering A2005,402,:1
13Laparoscopic Nissenversus Toupet fundoplication : objective and subjective results of aprospective randomized trial 显示文摘Koch 00 Kaindlstoifer A Antoniou SA 2012Surg Endosc2012,26,2:1
14显示文摘王斐民.? 论产业政策法和竞争法在转型中国的冲突与协调(J)经济法学评论. 2005 (00) 2005经济法学评论2005,,00:1
15Total synthesis of phenolic alka-loids 显示文摘Corral RA Orazi 00 Autino JC 1983Tetrahedron Lett1983,24,23:1
16Incidence of postoperative eye infections in aprivate eye hospital in Lagos, Nigeria显示文摘Oduyebo 00 Odugbemi TO Idewu A 2010Nig QJ Hosp Med2010,20,3:1
17Dissolution kinetics of chalcopyrite with hydrogen peroxide in sulphuric acid medium 显示文摘Adebayo A O Ipinmoroit K O Ajayi 00 2003Chemical and Biochemical Engineering Quarterly2003,17,3:1
18Acute onset of lower limb weakness, sphincter dysfunction and sensory disturbance in an older woman显示文摘Lamprell L Johnson 00 2013Med J Aust2013,199,6:1
19Effect of new generation application sorbents on the results of complex treatment in patients with diabetic foot syndrome显示文摘Biliaieva 00 Neshta VV Kury]yshyn VP 2009Klin Khir2009,,5:1
20Predictive value of the modified early warning score in a Turkish emergency department显示文摘Erol A Yusuf Y Fatih 00 2008Eur J Emerg Med2008,15,6:1
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