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排序方式: 共有193条查询结果,搜索用时 15 毫秒
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Hansen J Titko MA DeSchepper D Dodson G Donnelly TW Dow K Ent R Farkhondeh M Korsch W Kramer LH Lee K Makins NC Milner RG Tieger DR Welch TP Jones CE Arrington J Beise EJ Bray B Carr RW Filippone BW Gao H Lung A McKeown RD Mueller B Pitt ML Schulze R Sauer PU Candell E Napolitano J Tripp C Wojtsekhowski BB Lorenzon W 《Physical review letters》1995,74(5):654-657
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Bulten HJ Anthony PL Arnold RG Arrington J Beise EJ Belz E van Bibber K Bosted PE van den Brand JF Chapman MS Coulter KP Dietrich FS Ent R Epstein M Filippone BW Gao H Gearhart RA Geesaman DF Hansen J Holt RJ Jackson HE Jones CE Keppel CE Kinney E Kuhn SE Lee K Lorenzon W Lung A Makins NC Margaziotis DJ McKeown RD Milner RG Mueller B Napolitano J Nelson J O'Neill TG Papavassiliou V Petratos GG Potterveld DH Rock SE Spengos M Szalata ZM Tao LH White JL Zeidman B 《Physical review letters》1995,74(24):4775-4778
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Two-dimensional birefringence imaging in biological tissue by polarization-sensitive optical coherence tomography 总被引:5,自引:0,他引:5
Using a low-coherence Michelson interferometer, we measure two-dimensional images of optical birefringence in bovine tendon as a function of depth. Polarization-sensitive detection of the signal formed by interference of backscattered light from the sample and a mirror in the reference arm give the optical phase delay between light that is propagating along the fast and slow axes of the birefringent tendon. Images showing the change in birefringence in response to laser irradiation are presented. The technique permits rapid noncontact investigation of tissue structural properties through two-dimensional imaging of birefringence. 相似文献
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It is shown that the dimension of a poset is the smallest cardinal number such that there is an embedding of the poset into a strict product of linear orders. 相似文献
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Carbon capture and sequestration is necessary to tackle one of the biggest problems facing society: global climate change resulting from anthropogenic carbon dioxide (CO2) emissions. Despite this pressing need, we still rely on century-old technology—aqueous amine scrubbers—to selectively remove CO2 from emission streams. Amine scrubbers are effective due to their exquisite chemoselectivity towards CO2 to form ammonium carbamates and (bi)carbonates, but suffer from several unavoidable limitations. In this perspective, we highlight the need for CO2 capture via new chemistry that goes beyond the traditional formation of ammonium carbamates. In particular, we demonstrate how ionic liquid and metal–organic framework sorbents can give rise to capture products that are not favourable for aqueous amines, including carbamic acids, carbamate–carbamic acid adducts, metal bicarbonates, alkyl carbonates, and carbonic acids. These new CO2 binding modes may offer advantages including higher sorption capacities and lower regeneration energies, though additional research is needed to fully explore their utility for practical applications. Overall, we outline the unique challenges and opportunities involved in engineering new CO2 capture chemistry into next-generation technologies.New pathways for carbon capture and sequestration are needed to tackle the challenge of rising anthropogenic carbon dioxide emissions. 相似文献
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R. A. Smith J. B. Niederl J. H. C. Smith H. W. Milner A. W. C. Menzies F. Pregl Wm. J. Saschek M. Haitinger O. Heimstädt Ida B. Routh D. Kladischtscheff A. Soltys P. Muller G. Klein O. Werner H. Linser W. Jaeger L. Kofler W. Dernbach J. Deininger J. Donau F. Emich M. Malmy H. J. Fuchs G. W. Chapman E. Fränkel M. Gruber F. Feigl P. Krumholz Fr. L. Hahn G. Jaeger W. Herbert H. O. Hohl W. Münster J. Winkelmann A. Martini 《Analytical and bioanalytical chemistry》1934,99(9-10):355-364
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