C ellular plasticity has become the subject of intense research, with perhaps the greatest example provided by the recent Nobel Prize winners Drs Yamananka and Gurdon and the demonstration that terminally differentiated fibro-blasts can be coaxed into assuming an embryonic stem cell-like fate. Emerging evidence suggests that plasticity inherent in cells may be hijacked in the progression of dis...

Morphological plasticity of ectomycorrhizal (EcM) short roots (known also as first and second order roots with primary development) allows trees to adjust their water and nutrient uptake to local environmental conditions. The morphological traits (MTs) of short-living EcM roots, such as specific root length (SRL) and area, root tip frequency per mass unit (RTF), root tissue density, as well as ...

Reliable characterization of subsurface soil in urban areas is a major concern in geotechnical and geological engineering projects. In this regard, this research deals with development of a 3D geological engineering model on Mashhad City soil using Sequential Gaussian Simulation (SGS) approach. The intense variability of soil in the study area has sometimes caused serious problems in civil engi...

Residual soil is found in most areas with mountainous, hilly, and undulating topography. This marked by red or brown color. study aims to determine the physical mechanical properties of original residual conditions using slurry method. Research objects were taken from The East Ungaran District, Bergas Bawen District. Analysis test shows that sample a type clay kaolinite constituent minerals mod...

previous studies have shown that the receptive field properties, spontaneous activity and spatio-temporal interactions of low-threshold mechanical somatosensory cells in the barrel cortex are influenced by c-fibers. in this study, we examined the effect of c-fiber depletion on response properties of barrel cortex neurons following experience dependent plasticity. methods: in this study, exterac...

Memory and attention deficits are common after prefrontal cortex (PFC) damage, yet people generally recover some function over time. Recovery is thought to be dependent upon undamaged brain regions, but the temporal dynamics underlying cognitive recovery are poorly understood. Here, we provide evidence that the intact PFC compensates for damage in the lesioned PFC on a trial-by-trial basis depe...

The BDNF Val66Met polymorphism has been linked to decreased synaptic plasticity involved in motor learning tasks. We investigated whether individual differences in this polymorphism may promote differences in neural activity during a two-alternative forced-choice motor performance. In two separate sessions, the BOLD signal from 22 right-handed healthy men was measured during button presses with...

An important issue for neurophysiological studies of the visual system is the definition of the region of the visual field that can modify a neuron's activity (i.e., the neuron's receptive field - RF). Usually a trade-off exists between precision and the time required to map a RF. Manual methods (qualitative) are fast but impose a variable degree of imprecision, while quantitative methods are m...

One of the most important materials in building industry is earth brick. The current work focuses on evaluation Maroua soils and their potential usage manufacturing Compressed blocks (CEB). Four sites (Frolina, Goubeou, Mambang, Djoulgouf) were chosen to conduct this study. sample was collected at each location. Physico-chemical mineralogical characteristics obtained by using particle size, Att...