the n-(2-benzoyl-phenyl) oxalyl derivatives are important models for studying of three-centered intramolecular hydrogen bonding in organic molecules. the quantum theoretical calculations for two crystal structures of n-(2-benzoyl-phenyl) oxalyl (compounds i and ii) were performed by density functional theory (b3lyp method and 6-311+g* basis set). from the optimized structures, geometric paramet...

1Graduate Student, Department of Dental Materials and Prosthodontics, São José dos Campos Dental School, UNESP, São José dos Campos, São Paulo, Brazil. 2DDS, MSc, PhD Student, Department of Dental Materials and Prosthodontics, São José dos Campos Dental School, UNESP, São José dos Campos, São Paulo, Brazil. 3DDS, MS, PhD, Associate Professor, Department of Dental Materials and Prosthodontics, S...

to clarify the genetic relationships among the lidia breed lineages and two main portuguese lidia bovine populations, casta portuguesa and brava dos açores, 24 autosomal microsatellites were analyzed in 120 samples. brava dos açores showed the highest observed and expected heterozygosity (0.73 and 0.70, respectively) while casta portuguesa showed the lowest observed and expected heterozygosity ...

Radio Frequency IDentification (RFID) technology is a wireless identification method in which security and privacy are important parameters for public acceptance and widespread use. In order to thwart such security and privacy problems, a wide variety of authentication protocols have been proposed in the literature. In 2010, Yeh et al’s proposed a new RFID authentication protocol conforming to ...

The effect of impurities on quantum chemical parameters of single-walled nanotubes (SWNTs) was studied using density functional theory (DFT). The density of states (DOS), Fermi energy and thermodynamic energies of (5,5) carbon nanotubes were calculated in the presence of nitrogen impurity. It was found that this nanotube remains metallic after being doped with one nitrogen atom. The partial den...

Users and providers increasingly disagree on what Denial of Service (DoS) is. For example, an ISP might consider large multimedia downloads an attack to overload its infrastructure or have it pay high interconnection fees. On the other hand, a user will certainly consider selective bandwidth reduction that is used by ISPs as a countermeasure, as a DoS measure. Given the nature of their business...

Attacks against broadcast services in wireless sensor networks will have the most catastrophic effects on power and other resource consumptions. As bogus broadcast packets are propagated through sensor nodes without being filtered out, sensor nodes will waste their resources such as power and memory on transmitting and buffering those false packets. In networks where complex Denial-ofService (D...

BACKGROUND The emergence and spread of drug resistance to current antimalarial therapies remains a pressing concern, escalating the need for compounds that demonstrate novel modes of action. Diversity-Oriented Synthesis (DOS) libraries bridge the gap between conventional small molecule and natural product libraries, allowing the interrogation of more diverse chemical space in efforts to identif...

Standard chemotherapy fails in 40% to 50% of patients with diffuse large B-cell lymphoma (DLBCL). Some of these failures can be salvaged with high-dose regimens, suggesting a role for drug resistance in this disease. We examined the expression of genes in the glutathione (GSH) and ATP-dependent transporter (ABC) families in 2 independent tissue-based expression microarray datasets obtained prio...

Storage concepts employing the resistance of phase-change memory (PRAM) have matured in recent years. Attempts to model the conduction in the amorphous state of phase-change materials dominating the resistance of PRAM devices commonly invoke a connection to the electronic density-of-states (DoS) of the active material in form of a "distance between trap states s". Here, we point out that s depe...