نتایج جستجو برای: electronmicroscopy
تعداد نتایج: 200 فیلتر نتایج به سال:
Proper regulation of protein homeostasis in a cell is critical for the health of the organism. Proteins, intracellular or secreted, need to be produced and maintained at the right quantity, folded into their three-dimensional conformation with necessary posttranslational modifications, targeted to their correct destinations to insure their optimal function, and degraded efficiently and disposed...
To the editor: On September 22 and 23, 1994, veterinary authorities in Queensland and at the CSIRO Australian Animal Health Laboratory were advised of an outbreak of acute respiratory disease in horses at a stable in the Brisbane suburb of Hendra. The trainer of the horses had been hospitalized for a respiratory disease and was in critical condition. At that time, the cause of the horses’ illne...
Homologous recombination is a high-fidelity DNA repair pathway. Besides a critical role in accurate chromosome segregation during meiosis, recombination functions inDNA repair and in the recovery of stalled or broken replication forks to ensure genomic stability. In contrast, inappropriate recombination contributes to genomic instability, leading to loss of heterozygosity, chromosome rearrangem...
The evolution during thermal treatment of the precursor obtained by a new method to synthezise barium hexaferrite by chemical coprecipitation is described; the method involves the precipitation froma strongly alkaline ferrate(V1) solution containing barium chloride. Barium hexaferrite may be formed by heating of the original superparamagnetic precursor at temperatures as low as 700QC as shown b...
A 53-year-old asymptomatic man with no family history of Fabry disease or hypertrophic cardiomyopathy (HCM) exhibited increased ECG voltages (Figure [A]) and primary cardiac hypertrophy (left ventricular maximal wall thickness 16 mm and myocardial mass 163.2 g) with preserved contractility at cardiac magnetic resonance (Figure [D]). He was diagnosed in 2006 to be affected by Fabry disease cardi...
introduction: increases in pollution of water resources due to the contaminants have made researchers to develop the various methods in the remediation and the reuses of polluted resources contamination of soils with heavy metals is one of great environmental concerns for the human beings. cadmium (cd) as a toxic heavy metal is of significant environmental and occupational concern. contaminatio...
Components of the glycocalyx are being intensively studied for their involvement in a vast array of glomerular diseases. Among the most abundant proteoglycans in the glomerular cell glycocalyx are the heparan sulfate proteoglycans Glypican-1 and 5, expressed predominantly in glomerular endothelial and epithelial cells, respectively. We used a previously characterized zebrafish model to define t...
It has been proposed that Fe stress may be used in the study of limiting factors in photosynthesis as an expermental means of varying photochemical capacity in vivo (Plant Physiol 1980 65: 114-120). In this paper the effect of Fe stress on photosynthetic unit number, size, and composition was investigated by measuring P700, cytochrome (Cyt)f, chlorophyll (Chi) a, and Chi b in sugar beet leaves....
It has been proposed that Fe stress may be used in the study of limiting factors in photosynthesis as an expermental means of varying photochemical capacity in vivo (Plant Physiol 1980 65: 114-120). In this paper the effect of Fe stress on photosynthetic unit number, size, and composition was investigated by measuring P700, cytochrome (Cyt)f, chlorophyll (Chi) a, and Chi b in sugar beet leaves....
We demonstrate here a simple and effective (n,m)-selective growth of single-walled carbon nanotubes (SWCNTs) in an aerosol floating catalyst chemical vapor deposition (CVD) process by introducing a certain amount of ammonia (NH3). Chiralities of carbon nanotubes produced in the presence of 500 ppm NH3 at 880 !C are narrowly distributed around the major semiconducting (13,12) nanotube with over ...
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