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 This research applied a nanostructured electrochemical sensor with screen-printed electrode (SPE) for examining the dopamine (DA) electrocatalytic oxidation when uric acid (UA) was present. Cu(salophen) modified SPE Cu(salophen)/SPE employed to investigate behavior of DA. At optimal pH (pH 7.0), DA at takes place potential around 100 mV less positive than unmodified SPE. Chronoamperomet...

INTRODUCTION Since McCormick [1] introduced a method for deoxyribonucleic acid (DNA) extraction, known as solid-phase extraction (SPE), SPE using silica material [2] has become an essential technology for integrated point-of-care (POC) microsystem [3]. Recently, Price et al. provided an overview of these techniques [4], however it is still not easy to find the optimal solution for the microflui...

We introduce the notions of weakly and strongly positively expansive (wPE and sPE, respectively) discrete dynamical systems. Both are topological generalizations of the well-known metric notion of positive expansiveness (PE). We prove that the three notions are identical on compact metrizable spaces, but not on noncompact spaces. We investigate properties of PE, wPE, and sPE dynamical systems a...

The localization of radioactive iodine-labeled anti-a-fetoprotein (AFP) antibody in transplanted rat hepatomas was exam ined by total body scintigraphy, subcellular distribution of ra dioactivity, and microautoradiography of tissues. The specific antibody was isolated from anti-rat AFP horse antiserum by immunoadsorbent that was coupled with rat AFP and radioiodinated with 125I.F(ab')? was isol...

\Ve have used a structure-activity approach to investigate whether the Vinca alkaloids inhibit cell proliferation primarily by means of their effects on mitotic spindle microtubules or by another mechanism or by a combination of mechanisms. Five Vìnca alkaloids were used to investigate the relationship in Urla cells between inhibition of cell proliferation and blockage of mitosis, alteration o...

The effects of varying doses of three polycyclic aromatic hydrocarbons, 3-methylcholanthrene (MCA), benzo(a)pyrene (BaP), and benzo(e)pyrene (BeP), on cell-mediated immune func tions of in vivo mitogen-activated splenic lymphocytes were measured. Inbred mice (C57, C3H, and DBA) were given injec tions i.p. with phytohemagglutinin to activate splenic lympho cytes and were subsequently treated, vi...

We prove that the Schäfer–Wayne short pulse equation (SPE) which describes the propagation of ultra-short optical pulses in nonlinear media is integrable. First, we discover a Lax pair of the SPE which turns out to be of the Wadati–Konno–Ichikawa type. Second, we construct a chain of transformations which relates the SPE with the sine-Gordon equation.

Streptococcal pyrogenic exotoxin A (SPE A) is secreted by some strains of Streptococcus pyogenes and is strongly associated with streptococcal toxic shock syndrome (STSS), a severe and often fatal illness. SPE A possesses a number of biological properties, some of which are shared with a group of exotoxins of streptococcal and staphylococcal origins, the pyrogenic toxin superantigens (PTSAgs). ...

Caenorhabditis elegans spermatozoa move by crawling. Their motility requires thin cytoskeletal filaments assembled from a unique cytoskeletal protein, the major sperm protein (MSP). During normal sperm development the MSP is segregated to developing sperm by assembly into filaments that form a paracrystalline array in a transient organelle, the fibrous body-membranous organelle. Mutations in th...

BACKGROUND The preeclampsia syndrome is associated with endothelial dysfunction and the differential diagnosis between pure preeclampsia (PE) and superimposed preeclampsia (SPE) can be only be attained 12 weeks after delivery. OBJECTIVE To compare the assessment of endothelial function through flow-mediated dilatation in pregnant women with pure preeclampsia and superimposed preeclampsia. M...