Substance P (SP) immunoreactivity is detectable in the rat pituitary by RIA; however, immunolocalization has been difficult. We used a sensitive immunogold silver-enhancement staining technique to cytochemically locate SP in the gland. SP-immunoreactive (SP-ir) cells were seen in anterior pituitary (AP), and occasional SP-ir fibers and terminals were seen in both AP and posterior pituitary. Col...

Patients with essential thrombocythemia (ET) have an increased frequency of thrombosis, but the relationship of both thrombosis and JAK2 V617F allele burden with platelet turnover, acquired activated protein C resistance (aAPCR), and levels of coagulation factors and soluble markers of platelet, and endothelial activation is not well known. In 53 ET patients (26 with a history of thrombosis), r...

OBJECTIVE To describe, from health workers (HWs) perspectives, the potential and actual barriers to the implementation of the first change of policy from chloroquine (CQ) to Sulfadoxine / Sulfalane - Pyrimewthamine (SP) in preparation for the second change of policy to Artemisinin based Combination Therapies (ACTs). METHODS A descriptive cross-sectional survey of HWs using questionnaire inter...

Aberrant pulmonary epithelial and mesenchymal cell proliferation occurs when newborns are treated with oxygen and ventilation to mitigate chronic lung disease. Because the cyclin-dependent kinase inhibitor p21 inhibits proliferation of oxygen-exposed cells, its expression was investigated in premature baboons delivered at 125 days (67% of term) and treated with oxygen and ventilation pro re nat...

environmental stresses, such as salinity can play an important role in disturbing different stages of plant growth, development, and especially seed germination in arid and semiarid regions in iran. turf grasses are highly dissipation in areas associated with saline soils and/or saline irrigation water. in order to study the effects of salinity on turf grasses germination, an experiment was con...

Photonic receivers integrating unitravelling carrier (UTC) photodiodes with high saturation power=high gain semiconductor optical amplifiers (SOAs) are presented. The SOAs demonstrated up to 28 dB of gain with saturation output powers of up to 18.6 dBm, while the UTC photodiodes were capable of 40 Gbit=s operation under high photocurrent operation. The chip-coupled receiver sensitivity was bett...

since the change of land use accrued in the iran, especially in northern iran, this research aims tocompare the spatial variability of soil properties in three adjacent land uses including cultivated by wheat lands, grazing lands and forest lands covered by juniperus sp,  fagus orientalis, quercus castanifolia, and acer velotinum species in kiasar region, mazandaran province, northern iran. som...

Human papovavirus, RFV, isolated from urine of a renal transplant patient was compared with two strains of SV40 and with the prototype human papovavirus, BKV. Neutralization tests showed that RFV and BKV are indistinguishable, while large-plaque (LP) and small-plaque(SP) isolates of SV40 gave a low but significant level of cross-reaction with rabbit or human antisera against RFV. DNA reassociat...

We present a one-dimensional time-dependent analysis and simulation of Smith-Purcell (SP) free-electron lasers (FELs). The coupled Maxwell-Lorentz equations are set up, and the details of numerical simulation are presented. At low electron beam energy, a SP-FEL is a backward wave oscillator (BWO), and oscillations can be achieved without the need for feedback mirrors. In the linear regime, we s...

This study investigated the hypothesis that a simple intensive code, based on mean firing rate, could explain the cortical representation of subjective roughness intensity and its invariance with scanning speed. We examined the sensitivity of neurons in the cutaneous, finger representation of primary somatosensory cortex (S1) to a wide range of textures [1 mm high, raised-dot surfaces; spatial ...