Vestermunoz7083

An electrochemical deposition method was used to fabricate a gold nanoflower (AuNF) and carbon nanoparticle (CNP) modified carbon paper (CP) sensor (AuNFs-CNPs/CP) for the low-cost detection of 5-methyltetrahydrofolate (5-mTHF) in egg yolk. AuNF morphology and structures were characterized by scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy (XPS), revealing nanoflower sizes in the 50 to 200 nm range. AuNFs formed on the sensor were in the Au0. We evaluated 5-mTHF assay performance using cyclic voltammetry, differential pulse voltammetry and chronoamperometry. The AuNFs-CNPs/CP sensor detected 5-mTHF concentrations in the ranges from 1 to 5 mg L-1 and 1-20 μg L-1, with an excellent limit of detection of 1 μg L-1 and good selectivity toward 5-mTHF, when compared to other potentially interfering molecules in samples. The AuNFs-CNPs/CP sensor was also used to detect 5-mTHF in folate-rich, and was found to be twice than that of ordinary egg yolk.Linden trees are a source of food products called lime flowers (Tiliae flos), traditionally used in the form of infusion for the treatment of feverish colds and coughs. Lime flowers should include flowers of Tilia cordata Mill, T.x europaea L., and T. platyphyllos Scop. or a mixture of these. The aim of current research was to establish a fast, sensitive HPTLC (high-performance thin-layer chromatography) method that would allow the differentiation of material obtained from five species of lime occurring in Europe. The fingerprints for distinguishing these species were established, as well as a key for identification based on a visual evaluation of chromatograms. The results obtained were also subjected to chemometric analyses. It was shown that each species contains characteristic compounds i.e. linarin that can be used for their identification. The method developed can, in theory, be introduced for the quality control or authentication of linden flowers on the European market.

To evaluate the role of placental profile markers in second and third trimester of pregnancy in predicting hypertensive disorders of pregnancy (HDP) in women at high risk of preeclampsia.

Women who were at high risk of preeclampsia underwent βhCG, ultrasound assessment of placental length, thickness and its ratio, uterine artery Doppler at 20-24 weeks and 28-32 weeks of gestation, the outcome at delivery was noted. Those who developed HDP were cases and those with normal outcome were controls. The placental profile markers among cases and controls were compared.

Hypertensive disorders of pregnancy was seen in 72/160 (45%) high risk women The serum β hCG levels at 20-24 weeks (p=0.001) and 28-32 weeks (p=0.018) was significantly high in women who had preeclampsia. Placental thickness was found to be less in among all subgroups of HDP, for preeclampsia, it was significantly low at 20-24 weeks (AUC- 0.743; sensitivity- 75%, specificity- 66.3%) and 28 weeks (AUC -0.764, sensitivity - 75.0% specificity - 78.7%). Uterine artery S/D ratio was considerable high in women with chronic hypertension (AUC -0.765), gestational hypertension (AUC -0.771) and preeclampsia (AUC -0.726) at 20-24 weeks. In preeclampsia group, uterine artery PI was highest and the best marker at 20-24 weeks (AUC -0.935, sensitivity - 100.0%, specificity - 87.6%).

The placental profile markers may be used to provide closer follow up in high risk pregnancies with abnormal placental profile levels, while less intense follow up in those with normal levels, thus channelizing the resources.

The placental profile markers may be used to provide closer follow up in high risk pregnancies with abnormal placental profile levels, while less intense follow up in those with normal levels, thus channelizing the resources.Maternal asthma is known to impact intrauterine growth outcomes, which may be mediated, in part, by altered androgen signalling. Our aim was to explore whether the sheep placenta expresses androgen receptor (AR) isoforms and determine if the differential expression of AR protein isoforms is altered by maternal asthma. Four known AR isoforms were detected (AR-FL, AR-v1, AR-v7, and AR-45), and their expression and subcellular distribution was altered in the presence of maternal allergic asthma. These findings underscore the importance for in vivo models of maternal asthma to delineate molecular patterns that may contribute to feto-placental growth and development.Engine oil-derived ash particles emitted from internal combustion (IC) engines are unwanted by-products, after oil is involved in in-cylinder combustion process. Since they typically come out together with particulate emissions, no detail has been reported about their early-stage particles other than agglomerated particles loaded on aftertreatment catalysts and filters. To better understand ash formation process during the combustion process, differently formulated engine oils were dosed into a fuel system of a gasoline direct injection (GDI) engine that produces low soot mass emissions at normal operating conditions to increase the chances to find stand-alone ash particles separated from soot aggregates in the sub-20-nm size range. In addition to them, ash/soot aggregates in the larger size range were examined using scanning transmission electron microscopy (STEM)-X-ray electron dispersive spectroscopy (XEDS) to present elemental information at different sizes of particles from various oil formulations. The STEM-XEDS results showed that regardless of formulated oil type and particle size, Ca, P and C were always contained, while Zn was occasionally found on relatively large particles, suggesting that these elements get together from an early stage of particle formation. The S, Ca and P K-edge X-ray absorption near edge structure (XANES) analyses were performed for bulk soot containing raw ash. Isuzinaxib mouse The linear combination approach & cross-checking among XANES results proposed that Ca5(OH)(PO4)2, Ca3(PO4)2 and Zn3(PO4)2 are potentially major chemical compounds in raw ash particles, when combined with the STEM-XEDS results. Despite many reports that CaSO4 is a major ash chemical when ash found in DPF/GFP systems was examined, it was observed to be rarely present in raw ashes using the S K-edge XANES analysis, suggesting ash transformation.