Search results for "CEI"

Zur direkten komplexometrischen Calciumbestimmung im Serum mit Calcein als Indicator

1958

Es wird eine einfache Methode zur direkten komplexometrischen Ca-Bestimmung im Serum ohne Fallung und Enteiweisung mit Calcein als Indicator angegeben. Nach ausreichender Verdunnung wird die Titration bei pH>13 ausgefuhrt, wobei Mg quantitativ als Hydroxyd ausfallt. Bei der Standardmethode wird 1 ml Serum mit 0,002 m Komplexon titriert, gegebenenfalls konnen auch 0,5 ml Serum mit 0,0005 m Komplexon titriert werden. Eine Doppelbestimmung nimmt kaum mehr als 2 min in Anspruch.

Fluorescent Nanowires Self-Assembled through Host-Guest Interactions in Modified Calcein

2011

Innentitelbild: Fluorescent Nanowires Self-Assembled through Host-Guest Interactions in Modified Calcein (Angew. Chem. 32/2011)

2011

Inside Cover: Fluorescent Nanowires Self-Assembled through Host-Guest Interactions in Modified Calcein (Angew. Chem. Int. Ed. 32/2011)

2011

Preoperative CT-Based Deep Learning Model for Predicting Risk Stratification in Patients With Gastrointestinal Stromal Tumors.

2021

ObjectiveTo develop and evaluate a deep learning model (DLM) for predicting the risk stratification of gastrointestinal stromal tumors (GISTs).MethodsPreoperative contrast-enhanced CT images of 733 patients with GISTs were retrospectively obtained from two centers between January 2011 and June 2020. The datasets were split into training (n = 241), testing (n = 104), and external validation cohorts (n = 388). A DLM for predicting the risk stratification of GISTs was developed using a convolutional neural network and evaluated in the testing and external validation cohorts. The performance of the DLM was compared with that of radiomics model by using the area under the receiver operating char…

The oxygen radicals involved in the toxicity induced by parthenolide in MDA-MB-231 cells

2014

It has been shown that the sesquiterpene lactone parthenolide lowers the viability of MDA-MB-231 breast cancer cells, in correlation with oxidative stress. The present report examined the different radical species produced during parthenolide treatment and their possible role in the toxicity caused by the drug. Time course experiments showed that in the first phase of treatment (0-8 h), and in particular in the first 3 h, parthenolide induced dichlorofluorescein (DCF) signal in a large percentage of cells, while dihydroethidium (DHE) signal was not stimulated. Since the effect on DCF signal was suppressed by apocynin and diphenyleneiodonium (DPI), two inhibitors of NADPH oxidase (NOX), we s…

Power-Line Communication in Medium-Voltage System: Simulation Model and Onfield Experimental Tests

2012

The aim of this paper is to develop a complete model of a power-line communication (PLC) system operating on a medium-voltage (MV) network. The core-shield configuration was chosen for signal transmission in the power cables. In order to validate the developed model experimental, the medium-voltage network of the Favignana island was used to carry out detailed testing. The transmission was performed between two transformer substations in the presence of mains voltage (i.e., 24 kV). ST7540 FSK power-line transceivers, together with capacitive coupling interfaces, were used for the transmission and the reception of the communication signal. The correlation between the experimental measurement…

Highly Fluorescent and Water-Soluble Diketopyrrolopyrrole Dyes for Bioconjugation

2015

International audience; The preparation of highly water-soluble and strongly fluorescent diketopyrrolopyrrole (DPP) dyes using an unusual taurine-like sulfonated linker has been achieved. Exchanging a phenyl for a thienyl substituent shifts the emission wavelength to near λ=600 nm. The free carboxylic acid group present in these new derivatives was readily activated and the dyes were subsequently covalently linked to a model protein (bovine serum albumin; BSA). The bioconjugates were characterized by electronic absorption, fluorescence spectroscopy and MALDI-TOF mass spectrometry, thus enabling precise determination of the labeling density (ratio DPP/BSA about 3 to 8). Outstanding values of…

Evaluation of stroke volume variation obtained by arterial pulse contour analysis to predict fluid responsiveness intraoperatively

2009

Background Fluid management guided by oesophageal Doppler monitor has been reported to improve perioperative outcome. Stroke volume variation (SVV) is considered a reliable clinical predictor of fluid responsiveness. Consequently, the aim of the present trial was to evaluate the accuracy of SVV determined by arterial pulse contour (APCO) analysis, using the FloTrac™/Vigileo™ system, to predict fluid responsiveness as measured by the oesophageal Doppler. Methods Patients undergoing major abdominal surgery received intraoperative fluid management guided by oesophageal Doppler monitoring. Fluid boluses of 250 ml each were administered in case of a decrease in corrected flow time (FTc) to 10%. …

Self-efficacy and perceived control in the prevention of cardiovascular disease

2010

Desde la Teoría de Acción Planeada (TAP), el objetivo de este trabajo es analizar si la autoeficacia y la percepción de control presentan diferencias predictivas sobre la intención y las conductas preventivas de la enfermedad cardiovascular. La muestra estuvo compuesta por 359 sujetos. Los datos han sido analizados empleando el paquete estadístico EQS 6.1. Los resultados muestran que la autoeficacia influye positiva y significativamente sobre la intención y sobre la conducta, mientras que la percepción de control influye negativa y significativamente sobre la intención de conducta, pero no sobre la conducta preventiva. Este trabajo ha mostrado la conveniencia de distinguir entre autoeficaci…