Bloodstain age analysis: toward solid state fluorescent lifetime measurements

2013 ◽  
Author(s):  
Kevin Guo ◽  
Natalia Zhegalova ◽  
Samuel Achilefu ◽  
Mikhail Y. Berezin
Keyword(s):  
Solid State ◽  
Lifetime Measurements

An all solid‐state near‐infrared time‐correlated single photon counting instrument for dynamic lifetime measurements in DNA sequencing applications

1996 ◽  
Vol 67 (11) ◽  
pp. 3984-3989 ◽  
Author(s):  
Benjamin L. Legendre ◽  
Daryl C. Williams ◽  
Steven A. Soper ◽  
Rainer Erdmann ◽  
Uwe Ortmann ◽  
...  
Keyword(s):  
Solid State ◽  
Dna Sequencing ◽  
Near Infrared ◽  
Single Photon ◽  
Photon Counting ◽  
Lifetime Measurements ◽  
Single Photon Counting

“In Situ” Observation of Crystallization in Propylene Carbonate, Salol and M-Toluidine

2012 ◽  
Vol 733 ◽  
pp. 84-87 ◽  
Author(s):  
Viktor Majerník ◽  
Jozef Krištiak ◽  
Ondrej Šauša ◽  
Martina Iskrová-Miklošovičová
Keyword(s):  
Solid State ◽  
Propylene Carbonate ◽  
Crystallization Process ◽  
Scale Up ◽  
Lifetime Measurements ◽  
Molecular Systems ◽  
Positron Annihilation Lifetime ◽  
Temperature Range ◽  
Different Temperatures

Positron annihilation lifetime measurements have been performed on three molecular systems: propylene carbonate, salol and m-toluidine at the temperature range from 20 K up to 300 K. The time dependences of the orthopositronium lifetime and intensity have been observed at the temperature range between a solid state and the liquid state. These changes can be explained as transitions from the amorphous phase to one or two crystalline phases. The crystallization process from cooled liquid was observed in all three cases at different temperatures on the time scale up to 60 hours.

All-solid-state TCPC instrument for dynamic lifetime measurements in sensitive DNA analysis

1997 ◽  
Author(s):  
Rainer Erdmann ◽  
Michael Wahl ◽  
Kristian Lauritsen ◽  
Joerg Enderlein ◽  
Benjamin L. Legendre, Jr. ◽  
...  
Keyword(s):  
Solid State ◽  
Dna Analysis ◽  
Lifetime Measurements

Study of solid-state polymerization by positron lifetime measurements

1992 ◽  
Vol 30 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Sonia Millán ◽  
Victor Sánchez ◽  
Luz Alicia Fucugauchi ◽  
Yasuo Ito ◽  
Yoneho Tabata
Keyword(s):  
Solid State ◽  
Positron Lifetime ◽  
Lifetime Measurements ◽  
Solid State Polymerization

Anomalous Annihilation of Positrons in Several Solid Hydrocarbons

1972 ◽  
Vol 50 (14) ◽  
pp. 1619-1622 ◽  
Author(s):  
G. DeBlonde ◽  
S. Y. Chuang ◽  
B. G. Hogg ◽  
D. P. Kerr ◽  
D. M. Miller
Keyword(s):  
Solid State ◽  
Angular Correlation ◽  
Liquid State ◽  
Organic Materials ◽  
Lifetime Measurements ◽  
Momentum Component ◽  
Correlation Data ◽  
Solid Hydrocarbons

In previous experiments with positrons annihilating in liquid organic materials (Hogg et al.) the measurements of IN (intensity of the low momentum component from angular correlation data) and I2 (intensity of the long lived component from lifetime measurements) have resulted in IN = I2/3 within experimental error.For samples of CH4, C6H6, and C6H12 measurements in the liquid state yield the expected equality between IN and I2/3. However, in the solid state for these substances there is a marked disagreement between IN and I2/3. The value of IN, in all cases, is essentially zero suggesting that no positronium is formed, but the value of I2 remains large.

Preparation of Thin Cadmium Telluride Samples for Electron Microscope Studies

1974 ◽  
Vol 32 ◽  
pp. 548-549
Author(s):  
T. J. Magee ◽  
J. Peng ◽  
J. Bean
Keyword(s):  
Electron Microscope ◽  
Sulfuric Acid ◽  
Solid State ◽  
Sample Preparation ◽  
Cadmium Telluride ◽  
Potassium Dichromate ◽  
Optical Components ◽  
The Past ◽  
Solid State Devices

Cadmium telluride has become increasingly important in a number of technological applications, particularly in the area of laser-optical components and solid state devices, Microstructural characterizations of the material have in the past been somewhat limited because of the lack of suitable sample preparation and thinning techniques. Utilizing a modified jet thinning apparatus and a potassium dichromate-sulfuric acid thinning solution, a procedure has now been developed for obtaining thin contamination-free samples for TEM examination.

The Collagenic Molecular Structural Unit of Solid State Complexes

1971 ◽  
Vol 29 ◽  
pp. 478-479
Author(s):  
Kenneth M. Richter ◽  
John A. Schilling
Keyword(s):  
Molecular Weight ◽  
Solid State ◽  
Structural Unit ◽  
X Ray Diffraction ◽  
X Ray ◽  
Naoh Treatment

The structural unit of solid state collagen complexes has been reported by Porter and Vanamee via EM and by Cowan, North and Randall via x-ray diffraction to be an ellipsoidal unit of 210-270 A. length by 50-100 A. diameter. It subsequently was independently demonstrated by us in dog tendon, dermis, and induced complexes. Its detailed morphologic, dimensional and molecular weight (MW) aspects have now been determined. It is pear-shaped in long profile with m diameters of 57 and 108 A. and m length of 263 A. (Fig. 1, tendon, KMnO4 fixation, Na-tungstate; Fig. 2a, schematic of unit in long, C, and x-sectional profiles of its thin, xB, and bulbous, xA portions; Fig. 2b, tendon essentially unmodified by ether and 0.4 N NaOH treatment, Na-tungstate). The unit consists of a uniquely coild cable, c, of ṁ 22.9 A. diameter and length of 2580-3316 A. The cable consists of three 2nd-strands, s, each of m 10.6 A.

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