liquid nitrogen cryostat (Specac Inc)
86
Structured Review
Specac Inc
liquid nitrogen cryostat
Liquid Nitrogen Cryostat, supplied by Specac Inc, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/liquid+nitrogen+cryostat/cryostat+liquid+nitrogen/pm42082013-54-15-18
Average 86 stars, based on 1 article reviews
Liquid Nitrogen Cryostat, supplied by Specac Inc, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/liquid+nitrogen+cryostat/cryostat+liquid+nitrogen/pm42082013-54-15-18
Average 86 stars, based on 1 article reviews
liquid nitrogen cryostat - by Bioz Stars,
2026-10
86/100 stars
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other:Article Title: Primary charge separation in native and plant pheophytin a-modified reaction centers of Chloroflexus aurantiacus: Ultrafast transient absorption measurements at low temperature. Article Snippet: Ultrafast transient absorption (TA) spectroscopy was used to study electron transfer (ET) at 100 K in native (as isolated) reaction centers (RCs) of the green filamentous photosynthetic bacterium Chloroflexus (Cfl.) aurantiacus.. The rise and decay of the 1028 nm anion absorption band of the monomeric bacteriochlorophyll a molecule at the BA binding site were monitored as indicators of the formation and decay of the PBA state, respectively (P is the primary electron donor, a dimer of bacteriochlorophyll a molecules).. Global analysis of the TA data indicated the presence of at least two populations of the P* excited state, which decay by distinct means, forming the state PHA (HA is a photochemically active bacteriopheophytin a molecule). Article Title: Characterization of the low-temperature triplet state of chlorophyll in photosystem II core complexes: Application of phosphorescence measurements and Fourier transform infrared spectroscopy. Article Snippet: The sample temperature was controlled with a Article Title: Comparative study of charge separation mechanisms in plant photosystem II: Femtosecond broadband absorption spectroscopy of core particles and D1/D2/cyt b559 complexes. Article Snippet: The charge separation mechanism in spinach photosystem II core complexes (PSII-CC) and D1/D2/cytb559 reaction centers (D1D2-RC) was investigated using broadband femtosecond absorption spectroscopy in combination with kinetic modeling.. The population dynamics of electronic states was analyzed based on decomposing the spectral-temporal matrices ΔA(λ,t) into contributions from excited states of chlorophyll (Chl) and difference spectra of the oxidized electron donor P680 and the reduced pheophytin acceptor PheoD1 obtained by the steadystate photoaccumulation technique.. The results are discussed within the models, suggesting that in D1D2-RC at 279 K/77 K: (i) the predominant mechanism of primary charge separation is formation of the ChlD1 + PheoD1 − ionradical pair in 3.6/7.6 ps followed by the hole transfer to P680 in 30/108 ps; (ii) the excitation energy transfer from ChlZ molecules to central RC pigments occurs within 19/28 ps, overlapping in time with the electrontransfer reactions; (iii) the free energy level of ChlD1 + PheoD1 − is higher than that of the relaxed exciton state by ~30 meV, but the states become equally energetic during the ChlD1 + → P680 hole transfer. Control:Article Title: Dynamics of Coordination Complexes in Ground and Excited States Article Snippet: .. A Spectrophotometry:Article Title: FTIR spectroscopy of the reaction center of Chloroflexus aurantiacus: photoreduction of the bacteriopheophytin electron acceptor. Article Snippet: .. Single-scan electronic absorption spectra (480–1000 nm) at 95 K were measured using a Shimadzu UVPC-1601PC spectrophotometer and a |