Recall 1.1. The construction of the Steenrod squares and powers proceeds in the following steps 1. For a space X, the p-th cartesian power Xp is acted on cyclically by Z/p and it fits into a fibration Xp → EZ/p×Z/p Xp → BZ/p 2. If x ∈ H∗(X, Z/p), one defines u × · · · × u ∈ H∗(Xp, Z/p) and extends this class to ũ ∈ H(EZ/p×Z/p Xp; Z/p) by a construction on the chain level. 3. ũ is then pulled ba...

The exclusion zone (EZ) is a boundary region devoid of macromolecules and microscopic particles formed spontaneously in the vicinity of hydrophilic surfaces. The exact mechanisms behind this remarkable phenomenon are still not fully understood and are debated. We measured the shortand long-time-scale kinetics of EZ formation around a Nafion gel embedded in specially designed microfluidic device...

Curcuma phaeocaulis Val. is used in Chinese Pharmacopoeia as health food and folk medicine for removing blood stasis, alleviating pain and tumor therapy. This research was aimed to explore and compare three main bioactivities including anti-oxidant, antitumor and anti-inflammatory activities between the ethanol extract of C. Phaeocaulis and its fractions using different in vitro models. Firstly...

Let an integer n ≥ 2 and a vector of independent, identically distributed random variables X = (X1, . . . , Xn) be given with P(X = 0) = 0 and define the self-normalized sum Zn = ( Pn i=1 Xi)/( Pn i=1 X 2 i ) . We derive a formula for EZ n which enables us to prove that EZ 2 n ≥ 1 and that EZ n = 1 if and only if the summands are symmetrically distributed. The formula moreover suggests nonparam...

The vertical component (Ez) of the atmospheric electric field variations, measured at middle (obs. Swider) and polar (obs. Hornsund) latitudes under “fair-weather” conditions, have been analyzed. The strong effect of sharp daytime Ez increasing (negative Ez anomalies) in the middle latitudes was found during the main phase of the strong and moderate magnetic storms. The negative Ez deviation st...

The EZ Streak urine culture device (Difco Laboratories, Detroit, Mich.) combines the advantages of both the dip-slide and the classic urine culture technique, enabling bacterial enumeration and isolation following a simple inoculation step. Five hundred clean-catch urine specimens submitted by outpatients attending a health maintenance organization were used to compare the EZ Streak with cultur...

This study investigates the impact of the Rural Empowerment Zone and Enterprise Community Program on the Texas Rio Grande Valley. In order to examine the program’s impact, human development indexes for pre-EZ designation (1990) and EZ implementation (2000) time periods were developed. The results revealed minimal increases in human development index values in the EZ program counties. In fact, t...

DNA methylation analyses usually require a preceding bisulfite conversion of the DNA. The choice of an appropriate kit for a specific application should be based on the specific performance requirements with regard to the respective sample material. In this study, the performance of nine kits was evaluated: EpiTect Fast FFPE Bisulfite Kit, EpiTect Bisulfite Kit, EpiTect Fast DNA Bisulfite Kit (...