In situ Electrochemical Fluorescence Studies of PPV

2006 ◽  
Vol 110 (51) ◽  
pp. 25791-25796 ◽  
Author(s):  
F. Montilla ◽  
R. Mallavia
Keyword(s):  
Fluorescence Studies

Effects of shear on miscible polymer blends: in situ fluorescence studies

1991 ◽  
Vol 24 (19) ◽  
pp. 5451-5458 ◽  
Author(s):  
S. Mani ◽  
M. F. Malone ◽  
Henning H. Winter ◽  
J. L. Halary ◽  
L. Monnerie
Keyword(s):  
Polymer Blends ◽  
Fluorescence Studies ◽  
Miscible Polymer Blends

scholarly journals Osteoclastic Tartrate-resistant Acid Phosphatase (Acp 5): Its Localization to Dendritic Cells and Diverse Murine Tissues

2000 ◽  
Vol 48 (2) ◽  
pp. 219-227 ◽  
Author(s):  
Alison R. Hayman ◽  
Alison J. Bune ◽  
John R. Bradley ◽  
Jeremy Rashbass ◽  
Timothy M. Cox
Keyword(s):  
Bone Marrow ◽  
Dendritic Cells ◽  
Acid Phosphatase ◽  
Histochemical Staining ◽  
Tartrate Resistant Acid Phosphatase ◽  
Fluorescence Studies ◽  
Tissue Sections ◽  
Adult Mice ◽  
Mouse Tissues

Tartrate-resistant acid phosphatase (TRAP) is a histochemical marker of the osteoclast. It is also characteristic of monohistiocytes, particularly alveolar macrophages, and is associated with diverse pathological conditions, including hairy cell leukemia and AIDS encephalopathy. To study the biology of this enzyme, we investigated its expression and activity in mouse tissues. Confocal fluorescence studies showed that TRAP is localized to the lysosomal compartment of macrophages. In adult mice, high activities of the enzyme were demonstrated in bone, spleen, liver, thymus, and colon, with lower amounts in lung, stomach, skin, brain, and kidney. Trace amounts were detected in testis, muscle, and heart. Expression of TRAP mRNA was investigated in tissue sections by in situ hybridization and protein expression was monitored by histochemical staining or immunohistochemically. TRAP is widely expressed in many tissues, where it is associated with cells principally originating from the bone marrow, including those of osteoclast/macrophage lineage. The cellular distribution of TRAP mRNA and enzyme antigen in the tissues corresponds closely to that of cells staining with an antibody directed to the CD80 (B7) antigen. Therefore, to confirm its putative localization in dendritic cells, isolated bone marrow dendritic cells were matured in culture. These co-stained strongly for TRAP protein and the CD80 antigen. These studies demonstrate that TRAP is a lysosomal enzyme that is found in diverse murine tissues, where it is expressed in dendritic cells as well as osteoclasts and macrophages, as previously shown.

NMR Structure of a Bifunctional Rhodamine Labeled N-Domain of Troponin C Complexed with the Regulatory “Switch” Peptide from Troponin I:  Implications for in Situ Fluorescence Studies in Muscle Fibers†,‡

Biochemistry ◽  
2003 ◽  
Vol 42 (15) ◽  
pp. 4333-4348 ◽  
Author(s):  
Pascal Mercier ◽  
Roisean E. Ferguson ◽  
Malcolm Irving ◽  
John E. T. Corrie ◽  
David R. Trentham ◽  
...  
Keyword(s):  
Troponin I ◽  
Muscle Fibers ◽  
Troponin C ◽  
Nmr Structure ◽  
Fluorescence Studies

Chlorophyll bleaching by UV-irradiation in vitro and in situ: Absorption and fluorescence studies

2009 ◽  
Vol 78 (1) ◽  
pp. 25-32 ◽  
Author(s):  
Jelena Zvezdanović ◽  
Tijana Cvetić ◽  
Sonja Veljović-Jovanović ◽  
Dejan Marković
Keyword(s):  
Uv Irradiation ◽  
Fluorescence Studies ◽  
Chlorophyll Bleaching ◽  
In Situ Absorption

Ex situ and in situ fluorescence studies of electrosynthesized poly(N-vinylcarbazole) in the presence of various electrolytes

1992 ◽  
Vol 53 (1) ◽  
pp. 95-107 ◽  
Author(s):  
S. Balaei ◽  
J.J. Aaron ◽  
A. Desbene-Monvernay ◽  
P.C. Lacaze
Keyword(s):  
Ex Situ ◽  
Fluorescence Studies

scholarly journals FLUORESCENCE STUDIES FOR IN SITU MONITORING OF THE HYDROLYSIS AND POLYMERIZATION REACTIONS OF ORGANICALLY –MODIFIED TETRAMETHYLORTHOSILICATE

2010 ◽  
Vol 5 (3) ◽  
pp. 290-294
Author(s):  
Eko Sri Kunarti
Keyword(s):  
Condensation Reaction ◽  
Sol Gel ◽  
In Situ Monitoring ◽  
Condensation Polymerization ◽  
Surrounding Water ◽  
Fluorescence Studies ◽  
Hydrolysis And Condensation ◽  
Organically Modified ◽  
Kinetics Of

Monitoring of hydrolysis and condensation polymerization reactions of tetramethylorthosilicate-organosiloxane have been carried out. Proton transfer from the excited state of 8-hydroxy-1,3,6-pyrenetrisulfonic acid trisodium salt (pyranine) to surrounding water molecules was used as a sensitive fluorescence method for following the kinetics of water consumption during the early stages of the sol-gel polymerisation process. Changes in water/silane ratio, type of organosiloxane, mol ratio of organosiloxane to silica precursor and pH affected markedly the kinetic behavior of the hydrolysis and condensation reaction of tetramethylorthosilicate.   Keywords: hydrolysis, polymerisation, fluorescence, pyranine, tetramethylorthosilicate, organosiloxane.

E.S.R. of nitroxide radicals. II. Photosensitization of indoles, phenols, and thiols by a diphenylpyrazoline

1969 ◽  
Vol 22 (9) ◽  
pp. 1899 ◽  
Author(s):  
IH Leaver ◽  
GC Ramsay
Keyword(s):  
Excited State ◽  
Singlet Excited State ◽  
Nitroxide Radicals ◽  
Polar Solvents ◽  
Fluorescence Studies

Indoles, phenols, and thiols have been shown to undergo photosensitization by a diphenylpyrazoline in non-polar solvents. The intermediate radicals produced have been trapped using a nitrosoalkane scavenger, and the resulting nitroxide radicals examined in situ by e.s.r. Fluorescence studies of these systems have shown that indoles and phenols strongly quench the singlet excited state of the diphenyl- pyrazoline, whereas thiols have no effect.

Rendez vous with Saturn's rings

1984 ◽  
Vol 75 ◽  
pp. 743-759 ◽  
Author(s):  
Kerry T. Nock
Keyword(s):  
Solar Energy ◽  
Electric Propulsion ◽  
Power Source ◽  
Propulsion System ◽  
Low Thrust ◽  
Ring Plane ◽  
The Earth ◽  
Total Impulse ◽  
Saturn's Rings

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.

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