Anti-Müllerian hormone (AMH) measurements are widely used to optimize the stimulation protocols. ... more Anti-Müllerian hormone (AMH) measurements are widely used to optimize the stimulation protocols. First generation AMH kits correlated well with ovarian reserve and response to stimulation. In the present study we aimed to asses if the new generation kits share the same accurate correlations. Retrospective data were collected from 8323 blood samples. For comparison we used Immunotech I generation kit (ImI 4035 samples), Beckman Coulter II generation kit RUO (BCII RUO 3449, samples) and Beckman Coulter II generation kit with IVD certificate (BCII IVD 839 samples). We compared average AMH concentrations measured with different kits, as well as correlation between kits. We also compared average AMH concentrations in sera collected on different cycle days and samples of different quality of preservation. AMH serum concentrations differed for each kit, ranging 4.4 ± 4.12 (mean ± SD) for the ImI, 2.68 ± 3.15 for the BCII RUO, and 1.64 ± 2.85 for BCII IVD. The mean differences from an adjus...
ABSTRACT We report on the two-stage preparation method of electrode material composed of titania ... more ABSTRACT We report on the two-stage preparation method of electrode material composed of titania nanotubes and poly(3,4-ethylenedioxythiopene):poly(2-styrenesulphonate) conductive polymer (pEDOT:PSS). Initially, titania nanotube arrays were produced by the anodization process of Ti substrate. Next, the polymer was potentiostatically deposited onto the thermally annealed nanotube arrays from the electrolyte containing monomer and counter ion. The obtained material was characterized by means of Raman spectroscopy, SEM and photoluminescence spectroscopy. On the basis of electrochemical studies, a radical decrease in the electrode material resistance after conductive polymer deposition was detected. The enhancement in registered current under UV–vis irradiation was almost 4 times higher for a composite with the highest amount of deposited pEDOT:PSS in comparison to pristine titania nanotube array film.
Physical chemistry chemical physics : PCCP, Jan 7, 2014
We report on the preparation method of nanocrystalline titanium dioxide modified with platinum by... more We report on the preparation method of nanocrystalline titanium dioxide modified with platinum by using nanosecond laser ablation in liquid (LAL). Titania in the form of anatase crystals has been prepared in a two-stage process. Initially, irradiation by laser beam of a titanium metal plate fixed in a glass container filled with deionized water was conducted. After that, the ablation process was continued, with the use of a platinum target placed in a freshly obtained titania colloid. In this work, characterization of the obtained nanoparticles, based on spectroscopic techniques--Raman, X-ray photoelectron and UV-vis reflectance spectroscopy--is given. High resolution transmission electron microscopy was used to describe particle morphology. On the basis of photocatalytic studies we observed the rate of degradation process of methylene blue (MB) (a model organic pollution) in the presence of Pt modified titania in comparison to pure TiO2--as a reference case. Physical and chemical m...
Results of experimental and theoretical studies on laser ablation plume aimed at applications for... more Results of experimental and theoretical studies on laser ablation plume aimed at applications for the thin film deposition and non-destructive testing of surface layers are reported. The case of Si, SiO and SiO2 ablation and formation of particulates was investigated by means of Langmuir probe and spectral analyses. The numerical models of plasma -surface interaction based on Particle -In-Cell Monte-Carlo method were developed and applied (1). The effects related to plume splitting and acceleration are discussed.
DESCRIPTION Highly ordered titania nanotubes have received a lot of attention because of their ph... more DESCRIPTION Highly ordered titania nanotubes have received a lot of attention because of their photoelectrochemical activity, chemical stability and photocatalytic performance. Titanium dioxide is still one of the most studied materials applied in photocatalytic, removal of organic contaminations, hydrogen generation based on the water splitting process, solar cells and self-cleaning surfaces [1]. A pure titanium dioxide shows low activity under visible light resulting from the wide bandgap energy, many efforts were undertaken to shift the activity towards longer wavelengths in order to expand the compound’s applicability under natural solar radiation. To this end, different methods have been proposed in numerous publication, i.e. doping with metal [2] or non-metal atoms[3, 4, 5], sensitization by organic dye, combination with other oxides or deposition of noble metal particles on the oxide surface. The incorporation of non-metal atoms into the structure or onto the surface of the m...
Anti-Müllerian hormone (AMH) measurements are widely used to optimize the stimulation protocols. ... more Anti-Müllerian hormone (AMH) measurements are widely used to optimize the stimulation protocols. First generation AMH kits correlated well with ovarian reserve and response to stimulation. In the present study we aimed to asses if the new generation kits share the same accurate correlations. Retrospective data were collected from 8323 blood samples. For comparison we used Immunotech I generation kit (ImI 4035 samples), Beckman Coulter II generation kit RUO (BCII RUO 3449, samples) and Beckman Coulter II generation kit with IVD certificate (BCII IVD 839 samples). We compared average AMH concentrations measured with different kits, as well as correlation between kits. We also compared average AMH concentrations in sera collected on different cycle days and samples of different quality of preservation. AMH serum concentrations differed for each kit, ranging 4.4 ± 4.12 (mean ± SD) for the ImI, 2.68 ± 3.15 for the BCII RUO, and 1.64 ± 2.85 for BCII IVD. The mean differences from an adjus...
ABSTRACT We report on the two-stage preparation method of electrode material composed of titania ... more ABSTRACT We report on the two-stage preparation method of electrode material composed of titania nanotubes and poly(3,4-ethylenedioxythiopene):poly(2-styrenesulphonate) conductive polymer (pEDOT:PSS). Initially, titania nanotube arrays were produced by the anodization process of Ti substrate. Next, the polymer was potentiostatically deposited onto the thermally annealed nanotube arrays from the electrolyte containing monomer and counter ion. The obtained material was characterized by means of Raman spectroscopy, SEM and photoluminescence spectroscopy. On the basis of electrochemical studies, a radical decrease in the electrode material resistance after conductive polymer deposition was detected. The enhancement in registered current under UV–vis irradiation was almost 4 times higher for a composite with the highest amount of deposited pEDOT:PSS in comparison to pristine titania nanotube array film.
Physical chemistry chemical physics : PCCP, Jan 7, 2014
We report on the preparation method of nanocrystalline titanium dioxide modified with platinum by... more We report on the preparation method of nanocrystalline titanium dioxide modified with platinum by using nanosecond laser ablation in liquid (LAL). Titania in the form of anatase crystals has been prepared in a two-stage process. Initially, irradiation by laser beam of a titanium metal plate fixed in a glass container filled with deionized water was conducted. After that, the ablation process was continued, with the use of a platinum target placed in a freshly obtained titania colloid. In this work, characterization of the obtained nanoparticles, based on spectroscopic techniques--Raman, X-ray photoelectron and UV-vis reflectance spectroscopy--is given. High resolution transmission electron microscopy was used to describe particle morphology. On the basis of photocatalytic studies we observed the rate of degradation process of methylene blue (MB) (a model organic pollution) in the presence of Pt modified titania in comparison to pure TiO2--as a reference case. Physical and chemical m...
Results of experimental and theoretical studies on laser ablation plume aimed at applications for... more Results of experimental and theoretical studies on laser ablation plume aimed at applications for the thin film deposition and non-destructive testing of surface layers are reported. The case of Si, SiO and SiO2 ablation and formation of particulates was investigated by means of Langmuir probe and spectral analyses. The numerical models of plasma -surface interaction based on Particle -In-Cell Monte-Carlo method were developed and applied (1). The effects related to plume splitting and acceleration are discussed.
DESCRIPTION Highly ordered titania nanotubes have received a lot of attention because of their ph... more DESCRIPTION Highly ordered titania nanotubes have received a lot of attention because of their photoelectrochemical activity, chemical stability and photocatalytic performance. Titanium dioxide is still one of the most studied materials applied in photocatalytic, removal of organic contaminations, hydrogen generation based on the water splitting process, solar cells and self-cleaning surfaces [1]. A pure titanium dioxide shows low activity under visible light resulting from the wide bandgap energy, many efforts were undertaken to shift the activity towards longer wavelengths in order to expand the compound’s applicability under natural solar radiation. To this end, different methods have been proposed in numerous publication, i.e. doping with metal [2] or non-metal atoms[3, 4, 5], sensitization by organic dye, combination with other oxides or deposition of noble metal particles on the oxide surface. The incorporation of non-metal atoms into the structure or onto the surface of the m...
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Papers by M. Sawczak