the aim of this study was to determine the monthly dtr mass load of amphetamine-type compounds in poland as well as an investigation of cyclical behaviour by using time series analysis and especially trends analysis.amphetamine, methamphetamine and mdma (ecstasy) were detected in wastewater samples collected from the main wastewater treatment plant in the city of poznan using liquid chromatogra...

To identify proteins expressed in Escherichia coli K-12 MG1655 during exponential growth in defined medium, we separated soluble proteins of E. coli over two dimensions of native-state high-performance liquid chromatography, and examined the components of the protein mixtures in each of 380 fractions by peptide mass fingerprinting. To date, we have identified the products of 310 genes covering ...

background: the aim of this study is to verify the effects of the combined and classic training of different isometric rates of force development (rfd) parameters of legs. materials and methods: three groups of female athletes was tested: experimental group (n = 12), classically trained group (n = 11), and control group (n = 20) of athletes. the isometric “standing leg extension” and “ris...

the chemical components in the decoctions of chinese herbal medicines are not always the same as those in the crude herbs because of the insolubility or instability of some compounds. in this work, a high-performance liquid chromatography (hplc) coupled with electrospray ionization (esi) tandem mass spectrometry method was developed to explore dynamic variation patterns of aconitum alkaloids in...

high performance liquid chromatography (hplc) with diode array detection (dad) and electrospray ionization tandem mass spectrometry (esi/ms/ms) was used to analyze the main components in the methanol extract of fructus aurantii (fa) and the metabolites in rat biological samples after oral administration of the methanol extract of fa. there were 31 constituents identified in the extract of fa in...

A 12-b 20-MS/s pipelined ADC is calibrated using an algorithmic ADC, which is itself calibrated. With background calibration, the peak SNDR and SFDR of the pipeline are 70.8 dB and 93.3 dB, respectively. The total power dissipation is 254 mW from 3.3 V. The active area is 7.5 mm in 0.35 m CMOS.

Cell state-of-charge (SoC) balancing within each branch of a three-phase battery energy storage system (BESS) and among three branches is crucial to overcome the inability fully utilise available capacity BESS. The proposed topology constructed with one instead take advantage its idle cells/modules (Ms) (one-third total cells/ Ms) eliminate need SoC branches. Contrary conventional topologies, M...

The goal of the research reported in this chapter is to understand how competing stimuli in a temporal stream attract and hold attention in the first 200 ms after onset. In normal circumstances, visual perception is continuous, a cycle of saccades and fix-ations. Yet, until recently, perception has been studied almost exclusively by presenting a single stimulus array, perhaps preceded by a fixa...

Cucumber is one of the main vegetables in Iranian food basket. A wide range of pesticides are used for crops protection during the cultivation of vegetables such as cucumber due to heavy pest infestation. Analysis of pesticide residues in food and other environmental commodities have become essential requirement for consumers, producers, and food quality control authorities. This study was aime...

BACKGROUND Multiple sclerosis (MS) is an autoimmune disease, in which the insulating covers of nerve cells in the brain and spinal cord are demyelinated. This study was conducted to compare the efficacy of alemtuzumab and natalizumab in the treatment of different stages of MS patients. METHODS A total of 585 patients diagnosed with MS and hospitalized were included and analyzed after which th...