5,447 research outputs found
Low-threshold diode-pumped CW passively mode-locked Nd:YVO4 lase
No full textA low-threshold passively continuous-wave (CW) mode-locked Nd:YVO4 solid-state laser was demonstrated by use of a semiconductor saturable absorber mirror (SESAM). The threshold for continuous-wave mode-locked is relatively low, about 2.15 W. The maximum average output power was 2.12 W and the optical to optical conversion efficiency was about 32%. The pulse width was about 15 ps with the repetition rate of 105 MHz. (C) 2008 Elsevier GmbH. All rights reserved
Bioremediation of n-alkanes and the formation of biofloccules by Rhodococcus erythropolis NTU-1 under various saline conditions and sea water
No full text
Behavior of carbonyl ylide generated from 3-chloro-3-(p-nitrophenyl)diazirine and acetone 1,3-dipolar cycloaddition to benzaldehyde and epoxide formation
No full textPT: J; CR: DEMARCH P, 1982, J AM CHEM SOC, V104, P4952 DEMARCH P, 1982, J AM CHEM SOC, V104, P4953 GILL HS, 1983, J ORG CHEM, V48, P1051 HOUK KN, 1973, J AM CHEM SOC, V95, P7302 HUISGEN R, 1977, ANGEW CHEM INT EDIT, V16, P572 IBATA T, 1986, TETRAHEDRON LETT, V27, P4383 LIU MTH, 1974, TETRAHEDRON LETT, P1329 LIU MTH, 1987, TETRAHEDRON LETT, V28, P1011 MARTIN CW, 1971, J CHEM SOC CHEM COMM, P1438 MARTIN CW, 1971, J CHEM SOC CHEM COMM, P15 MARTIN CW, 1985, J ORG CHEM, V50, P2050 PADWA A, 1969, J ORG CHEM, V34, P2728 SEYFERTH D, 1974, J ORGANOMET CHEM, V67, P341 UEDA K, 1972, B CHEM SOC JPN, V45, P2779; NR: 14; TC: 8; J9: CHEM LETT; PG: 4; GA: L0892Source type: Electronic(1
Carbonyl ylide from 3-chloro-3-p-nitrophenylcarbene and acetone
No full textPT: J; CR: BEKHAZI M, 1983, J AM CHEM SOC, V105, P1289 DEMARCH P, 1982, J AM CHEM SOC, V104, P4952 DEMARCH P, 1982, J AM CHEM SOC, V104, P4953 GRAHAM WH, 1965, J AM CHEM SOC, V87, P4396 GRILLER D, UNPUB HUAN Z, 1983, TETRAHEDRON LETT, V24, P2829 LIU MTH, 1972, CAN J CHEM, V50, P3009 LIU MTH, 1982, CHEM SOC REV, V11, P127 MARTIN CW, 1983, J ORG CHEM, V48, P1898 TAKEBAYASHI M, 1970, B CHEM SOC JPN, V43, P1500 UEDA K, 1972, B CHEM SOC JPN, V45, P2779; NR: 11; TC: 22; J9: TETRAHEDRON LETT; PG: 4; GA: D9916Source type: Electronic(1
Characterization of polysaccharide and volatile compounds produced by kefir grains grown in soymilk
No full textA new relevance feedback technique for iconic image retrieval based on spatial relationships
No full text[[abstract]]Due to the popularity of Internet and the growing demand of image access, the volume of image databases is exploding. Hence, we need a more efficient and effective image searching technology. Relevance feedback technique has been popularly used with content-based image retrieval (CBIR) to improve the precision performance, however, it has never been used with the retrieval systems based on spatial relationships. Hence, we propose a new relevance feedback framework to deal with spatial relationships represented by a specific data structure, called the 2D B(e)-string. The notions of relevance estimation and query reformulation are embodied in our method to exploit the relevance knowledge. The irrelevance information is collected in an irrelevant set to rule out undesired pictures and to expedite the convergence speed of relevance feedback. Our system not only handles picture-based relevance feedback, but also deals with region-based feedback mechanism, such that the efficacy and effectiveness of our retrieval system are both satisfactory. (C) 2008 Elsevier Inc. All rights reserved.[[note]]SC
Kinetic studies of chloro-p-nitrophenylcarbene with acetone and diethyl fumarate
No full textPT: J; CR: BEKHAZI M, 1983, J AM CHEM SOC, V105, P1289 DEMARCH P, 1982, J AM CHEM SOC, V104, P4952 DEMARCH P, 1982, J AM CHEM SOC, V104, P4953 GRAHAM WH, 1965, J AM CHEM SOC, V87, P4396 GRILLER D, IN PRESS HUAN Z, 1983, TETRAHEDRON LETT, V24, P2829 IBATA T, 1986, TETRAHEDRON LETT, V27, P4383 LIU MTH, 1972, CAN J CHEM, V50, P3009 MARTIN CW, 1983, J ORG CHEM, V48, P1898 TAKEBAYASHI M, 1970, B CHEM SOC JPN, V43, P1500 UEDA K, 1972, B CHEM SOC JPN, V45, P2779; NR: 11; TC: 14; J9: TETRAHEDRON LETT; PG: 4; GA: G4363Source type: Electronic(1
Cw ion lasers pumped by electron beams
Full text linkWe have obtained cw laser radiation from singly ionized Hg, I, Cd, Se, and As by exciting He metal-vapor mixtures with a dc electron beam. The beam is generated by glow discharge electron guns located apart from the active medium. This is the first time that cw ion laser action has been obtained using electron beam excitation
CW laser action in atomic fluorine
Full text linkWe have obtained CW laser action on four transitions in the doublet system of atomic fluorine for the first time. All previously reported laser action was on a pulsed basis only. CW laser radiation was obtained when F2 or AgF was used as a fluorine donor in an electron beam pumped helium plasma. A multiline output power of 200 mW was obtained
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