Oxygen carrier

Ebook "Heterogeneous photocatalysis using inorganic semiconductor solids" underscores the essential principles of photocatalysis and provides an update on its scientific foundations, research advances, and current opinions, and interpretations. It consists of an introduction to the concepts that form the backbone of photocatalysis, from the principles of solid-state chemistry and physics to the role of reactive oxidizing species.

222p tudohanhtau1006 29-03-2024 1 1   Download

Part 1 book "Manual of veterinary transfusion medicine and blood banking" includes content: Evolution of veterinary transfusion medicine and blood banking, component therapy, red blood cell products, plasma products, platelet products, hemoglobin based oxygen carrier solutions, alternative plasma protein products: albumin and human immunoglobulin therapy,... and other contents.

200p muasambanhan01 13-12-2023 6 3   Download

Approximately 90 haemoglobinopathies have been identified that result in abnormally high oxygen affinity. One of these is haemoglobinopathy York (HbY), first described in 1976. HbY causes an extreme leftward shift of the oxygen dissociation curve with the P50 value changing to 12.5 - 15.5 mmHg (normal value 26.7 mmHg), indicating that approximately half of the haemoglobin is not available as oxygen carrier.

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Hemoglobin vesicles (HbV) are hemoglobin-based oxygen carriers manufactured by liposome encapsulation of hemoglobin molecules. We hypothesised that the infusion of oxygenated HbV could prolong the time to circulatory collapse during apnea in rats.

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In this report, Raman spectra of the Zn1−xMnxO samples annealed at various temperatures in different ambients, such as in air, in argon and in oxygen were studied. The results indicate that the Raman spectra of the samples are affected significantly by the annealing temperature and by the ambient. The most intensive peak in the Raman spectra at approximately 570 cm−1 has two components, one at around 570 cm−1 (A1(LO)) and the other at 580 cm−1 (E1(LO)). In contrast to previous results, with increasing annealing temperature, the intensity of 570 cm−1 peak still remains anomalously high.

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Nonviral gene delivery systems are considered to be a safe alternative to the viral system used in gene therapy. Although polyethylenimine (PEI) is among the most promising gene-carrier candidates for efficient nonviral gene delivery, safety concerns regarding its toxicity remain challenging.

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The random distribution of TiO2 anatase nanoparticle in PPy matrix forms variety of carrier barriers on the surface and inside of the materials. As expectation, the charge exchange between oxygen and the PPy affects the carrier barrier’s regions and then modify the electrical properties of PPy.

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Competing geophysical/geochemical hypotheses for how Earth’s surface became oxygenated – organic carbon burial, hydrogen escape to space, and changes in the redox state of volcanic gases – are examined and a more biologically-based hypothesis is offered in response. It is argued that compared to the modern oxygenated world, organic carbon burial is of minor importance to the accumulation of oxygen in a mainly anoxic world where aerobic respiration is not globally significant. Thus, for the Paleoproterozoic Great Oxidation Event (GOE) ~ 2.

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We have engineered a stable octameric hemoglobin (Hb) of molecular mass 129 kDa, a dimer of recombinant hemoglobin (rHbbG83C-F41Y) tetra-mers joined by disulfide bonds at theb83 position. One of the major prob-lems with oxygen carriers based on acellular hemoglobin solutions is vasoactivity, a limitation which may be overcome by increasing the mole-cular size of the carrier.

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