نتایج جستجو برای: gfa

تعداد نتایج: 274  

Journal: :Acta Biológica Colombiana 2023

El funcionamiento ecosistémico de quebradas o arroyos altoandinos Colombia aún es poco conocido. objetivo este estudio fue evaluar la descomposición hojas aliso (Alnus acuminata), sietecueros (Andesanthus lepidotus) y una mezcla 1:1 estas especies (Mixto), utilizando bolsas hojarasca poro amplio fino, 5 0,5 mm respectivamente, en quebrada Las Perlas (2390 m.s.n.m.). Se recolectaron cuatro répli...

Journal: :Physical review. E, Statistical, nonlinear, and soft matter physics 2015
Minglei Wang Kai Zhang Zhusong Li Yanhui Liu Jan Schroers Mark D Shattuck Corey S O'Hern

We perform molecular dynamics (MD) simulations of the crystallization process in binary Lennard-Jones systems during heating and cooling to investigate atomic-scale crystallization kinetics in glass-forming materials. For the cooling protocol, we prepared equilibrated liquids above the liquidus temperature Tl and cooled each sample to zero temperature at rate Rc. For the heating protocol, we fi...

Journal: :Journal of neuropathology and experimental neurology 1983
S C Papasozomenos

The development of human pineal astrocytes was studied in a prospective autopsy series of 115 cases with an age range of 24 weeks of gestation to 91 years. Pineal glands selected from cases with postmortem intervals of one to 24 hours were fixed in Bouin's fluid and immunostained using the peroxidase-antiperoxidase technique and an antiserum against human glial fibrillary acidic (GFA) protein. ...

2013
Hiroshi I. Suzuki Hajime Mihira Tetsuro Watabe Koichi Sugimoto Kohei Miyazono

MicroRNAs (miRNAs) comprise a gene-regulatory network through sequence complementarity with target mRNAs. Previous studies have shown that mammalian miRNAs decrease many target mRNA levels and reduce protein production predominantly by target mRNA destabilization. However, it has not yet been fully assessed whether this scheme is widely applicable to more realistic conditions with multiple miRN...

2015
Simon R. Cox Mark E. Bastin Karen J. Ferguson Susana Muñoz Maniega Sarah E. MacPherson Ian J. Deary Joanna M. Wardlaw Alasdair M.J. MacLullich

Elevated glucocorticoid (GC) levels are hypothesized to be deleterious to some brain regions, including white matter (WM). Older age is accompanied by increased between-participant variation in GC levels, yet relationships between WM integrity and cortisol levels in older humans are underexplored. Moreover, it is unclear whether GC-WM associations might be general or pathway specific. We analyz...

Journal: :The Journal of clinical investigation 1996
L F Hebert M C Daniels J Zhou E D Crook R L Turner S T Simmons J L Neidigh J S Zhu A D Baron D A McClain

The hexosamine biosynthetic pathway has been hypothesized to be involved in mediating some of the toxic effects of hyperglycemia. Glutamine:fructose-6-phosphate amidotransferase (GFA), the first and rate limiting enzyme of the hexosamine biosynthetic pathway, was overexpressed in skeletal muscle and adipose tissue of transgenic mice. A 2.4-fold increase of GFA activity in muscle of the transgen...

2012
Luis César Rodríguez Eric Marchezini Mazzer Claudemiro Bolfarini Walter José Botta Claudio Shyinti Kiminami

The effect of minor additions of Gd and Sm on the glass-forming ability (GFA) of Cu-Zr-Al alloys is investigated here. The rationale for these additions is the fact that the atomic size distribution can increase GFA by changing the topology of the alloy as a function of cluster stability, which is tied to the electronegativity and ionic and covalent nature of alloys. Ingots with nominal composi...

Journal: :The Journal of neuroscience : the official journal of the Society for Neuroscience 1982
D Dahl D J Selkoe R T Pero A Bignami

Using anti-chicken brain neurofilament antisera, Alzheimer's neurofibrillary tangles from two patients with senile dementia were stained by immunofluorescence and by the peroxidase-antiperoxidase procedure in cryostat sections of hippocampus and frontal cortex. In sections of cerebellum obtained from the same patients, the distribution of immunostaining was the same as that observed in experime...

Journal: :NeuroImage 2010
Liang Zhan Alex D. Leow Neda Jahanshad Ming-Chang Chiang Marina Barysheva Agatha D. Lee Arthur W. Toga Katie L. McMahon Greig I. de Zubicaray Margaret J. Wright Paul M. Thompson

A key question in diffusion imaging is how many diffusion-weighted images suffice to provide adequate signal-to-noise ratio (SNR) for studies of fiber integrity. Motion, physiological effects, and scan duration all affect the achievable SNR in real brain images, making theoretical studies and simulations only partially useful. We therefore scanned 50 healthy adults with 105-gradient high-angula...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 1998
Y Cao B C Oh L Stryer

Goldfish reproduction is coordinated by pheromones that are released by ovulating females and detected by males. Two highly potent pheromones, a dihydroxyprogesterone and a prostaglandin, previously have been identified, and their effects on goldfish behavior have been studied in depth. We have cloned goldfish olfactory epithelium cDNAs belonging to two multigene G-protein coupled receptor fami...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید