Beam loading in the nonlinear regime of plasma-based acceleration (2008)
Tzoufras, M., Lu, W., Tsung, F. S., Huang, C., Mori, W. B., Katsouleas, T., ...
A theory that describes how to load negative charge into a nonlinear, three-dimensional plasma wakefield is presented. In this regime, a laser or an electron beam blows out the plasma electrons and...
Prospects for all-optical ultrafast muon acceleration (2008)
Peano, F., Vieira, J., Mulas, R., Coppa, G., Bingham, R., Silva, L. O.
A scheme for fast, compact, and controllable acceleration of heavy particles in vacuum has been recently proposed [F. Peano et al., New J. Phys. 10 033028 (2008)], wherein two counterpropagating...
Direct Acceleration of Ions With Variable-frequency Lasers (2008)
Peano, F., Vieira, J., Fonseca, R. A., Mulas, R., Coppa, G., Silva, L. O.
A method is proposed for producing monoergetic, high-quality ion beams in vacuum, via direct acceleration by the electromagnetic field of two counterpropagating, variable-frequency lasers: ions are...
One-to-one full scale simulations of laser wakefield acceleration using QuickPIC (2008)
Vieira, J., Fiuza, F., Fonseca, R. A., Silva, L. O., Huang, C., Lu, W., ...
We use the quasi-static particle-in-cell code QuickPIC to perform full-scale, one-to-one LWFA numerical experiments, with parameters that closely follow current experimental conditions. The...
All-optical trapping and acceleration of heavy particles (2008)
Peano, F., Vieira, J., Silva, L. O., Mulas, R., Coppa, G.
A scheme for fast, compact, and controllable acceleration of heavy particles in vacuum is proposed, in which two counterpropagating lasers with variable frequencies drive a beat-wave structure with...
An improved limit on the axion-photon coupling from the CAST experiment (2007)
Andriamonje, S, Aune, S, Autiero, D, Barth, K, Belov, A, Beltran, B, ...
We have searched for solar axions or similar particles that couple to two photons by using the CERN Axion Solar Telescope (CAST) setup with improved conditions in all detectors. From the absence of...
An improved limit on the axion–photon coupling from the CAST experiment (2007)
Andriamonje, S., Aune, S., Autiero, D., Barth, K., Belov, A., Beltran, B., ...
An Improved limit on the axion-photon coupling from the CAST experiment (2007)
Andriamonje, S., Aune, S., Autiero, D., Barth, K., Belov, A., Beltran, B., ...
We have searched for solar axions or similar particles that couple to two photons by using the CERN Axion Solar Telescope (CAST) setup with improved conditions in all detectors. From the absence of...
Lu, W., Tzoufras, M., Joshi, C., Tsung, F. S., Mori, W. B., Vieira, J., ...
The extraordinary ability of space-charge waves in plasmas to accelerate charged particles at gradients that are orders of magnitude greater than in current accelerators has been well documented. We...
Acute renal failure prolongs weaning from mechanical ventilation in critically ill patients (2006)
Vieira, J, Castro, I, DeMarzo, S, Cuvello-Neto, A, Abdulkader, R, Deheinzelin, D
No abstract available.
First results from the CAST experiment (2006)
Dafni, T., Andriamonje, S., Arsov, V., Aune, S., Autiero, D., Barth, K., ...
Evidence of photon acceleration by laser wake fields (vol 13, pg 033108, 2006) (2006)
Murphy, CD, Trines, R, Vieira, J, Reitsma, AJW, Bingham, R, Collier, JL, ...
Evidence of photon acceleration by laser wake fields (2006)
Murphy, CD, Trines, R, Vieira, J, Reitsma, AJW, Bingham, R, Collier, JL, ...
Photon acceleration is the phenomenon whereby a light wave changes color when propagating through a medium whose index of refraction changes in time. This concept can be used to describe the spectral...
The CERN Axion Solar Telescope (CAST): an update (2005)
Andriamonje, S., Arsov, V., Aune, S., Aune, T., Avignone III, F. T., Barth, K., ...
Noldin,J.A., Yokoyama,S., Stuker,H., Rampelotti,F.T., Gonçalves,M.I.F., Eberhardt,D.S., ...
O arroz-vermelho e o arroz-preto constituem-se nas principais plantas daninhas infestantes da cultura de arroz irrigado, devido à dificuldade de controle seletivo desta espécie em lavouras...
DEPENDENCE OF THE DENSIFICATION ON GRAIN GROWTH AND ON AGGLOMERATION IN SINTERING OF DOLOMITE (1986)
Fonseca, A., Vieira, J., Baptista, J.
Sintering at 1650 - 1750°C in air and in vacuum of directly precipitated dolomite, calcined under different pressures of CO2, resulted either in temporary halt in densification or even in a...
DEPENDENCE OF THE DENSIFICATION ON GRAIN GROWTH AND ON AGGLOMERATION IN SINTERING OF DOLOMITE (1986)
Fonseca, A., Vieira, J., Baptista, J.
Sintering at 1650 - 1750°C in air and in vacuum of directly precipitated dolomite, calcined under different pressures of CO2, resulted either in temporary halt in densification or even in a...
DEPENDENCE OF THE DENSIFICATION ON GRAIN GROWTH AND ON AGGLOMERATION IN SINTERING OF DOLOMITE (1986)
Fonseca, A., Vieira, J., Baptista, J.
Sintering at 1650 - 1750°C in air and in vacuum of directly precipitated dolomite, calcined under different pressures of CO2, resulted either in temporary halt in densification or even in a...
Vieira, J, Huang, M L, Koelle, D M, Corey, L
We have evaluated the physical state and infectious nature of Kaposi's sarcoma-associated herpesvirus (KSHV) in the saliva of nine persons with past or current Kaposi's sarcoma (KS). KSHV DNA in...
Vieira, J, Farrell, H E, Rawlinson, W D, Mocarski, E S
The organization and function of the genes encoded within the HindIII J region of the murine cytomegalovirus genome were analyzed by transcript mapping and cDNA isolation, nucleotide sequence...
Lagenaur, L A, Manning, W C, Vieira, J, Martens, C L, Mocarski, E S
The salivary gland has long been recognized as an important target organ for cytomegalovirus replication in the infected host. A viral gene, denoted sgg1, plays an important role for replication in...
Replication of a geminivirus derived shuttle vector in maize endosperm cells.
Ugaki, M, Ueda, T, Timmermans, M C, Vieira, J, Elliston, K O, Messing, J
A maize (Zea mays L.) endosperm cell culture has been shown to efficiently replicate DNA sequences derived from wheat dwarf virus (WDV), a monopartite monocot geminivirus. To analyze sequences...
Discordant Rates of Chromosome Evolution in the Drosophila Virilis Species Group
Vieira, J., Vieira, C. P., Hartl, D. L., Lozovskaya, E. R.
In Drosophila, the availability of polytene chromosome maps and of sets of probes covering most regions of the chromosomes allows a direct comparison of the organization of the genome in different...
Evidence for selection at the fused locus of Drosophila virilis.
The genomic DNA sequence of a 2.4-kb region of the X-linked developmental gene fused was determined in 15 Drosophila virilis strains. One common replacement polymorphism is observed, where a...
Selection acting on codon usage can cause patterns of synonymous evolution to deviate considerably from those expected under neutrality. To investigate the quantitative relationship between...
Evidence for selection at the fused1 locus of Drosophila americana.
Vieira, J, McAllister, B F, Charlesworth, B
We analyze genetic variation at fused1, a locus that is close to the centromere of the X chromosome-autosome (X/4) fusion in Drosophila americana. In contrast to other X-linked and autosomal genes,...
Vieira, J, Huang, M L, Koelle, D M, Corey, L
We have evaluated the physical state and infectious nature of Kaposi's sarcoma-associated herpesvirus (KSHV) in the saliva of nine persons with past or current Kaposi's sarcoma (KS). KSHV DNA in...
Vieira, J, Farrell, H E, Rawlinson, W D, Mocarski, E S
The organization and function of the genes encoded within the HindIII J region of the murine cytomegalovirus genome were analyzed by transcript mapping and cDNA isolation, nucleotide sequence...
Lagenaur, L A, Manning, W C, Vieira, J, Martens, C L, Mocarski, E S
The salivary gland has long been recognized as an important target organ for cytomegalovirus replication in the infected host. A viral gene, denoted sgg1, plays an important role for replication in...
Replication of a geminivirus derived shuttle vector in maize endosperm cells.
Ugaki, M, Ueda, T, Timmermans, M C, Vieira, J, Elliston, K O, Messing, J
A maize (Zea mays L.) endosperm cell culture has been shown to efficiently replicate DNA sequences derived from wheat dwarf virus (WDV), a monopartite monocot geminivirus. To analyze sequences...
Discordant Rates of Chromosome Evolution in the Drosophila Virilis Species Group
Vieira, J., Vieira, C. P., Hartl, D. L., Lozovskaya, E. R.
In Drosophila, the availability of polytene chromosome maps and of sets of probes covering most regions of the chromosomes allows a direct comparison of the organization of the genome in different...
Evidence for selection at the fused locus of Drosophila virilis.
The genomic DNA sequence of a 2.4-kb region of the X-linked developmental gene fused was determined in 15 Drosophila virilis strains. One common replacement polymorphism is observed, where a...
Selection acting on codon usage can cause patterns of synonymous evolution to deviate considerably from those expected under neutrality. To investigate the quantitative relationship between...
Evidence for selection at the fused1 locus of Drosophila americana.
Vieira, J, McAllister, B F, Charlesworth, B
We analyze genetic variation at fused1, a locus that is close to the centromere of the X chromosome-autosome (X/4) fusion in Drosophila americana. In contrast to other X-linked and autosomal genes,...
X chromosome DNA variation in Drosophila virilis.
Comparisons of polymorphism patterns between distantly related species are essential in order to determine their generality. However, most work on the genus Drosophila has been done only with species...