Acoustic waves based MEMS devices offer a promising technology platform for a wide range of applications due to their high sensitivity and the capability to operate wirelessly. These devices utilize an acoustic wave propagating through or on the surface of a piezoelectric material, as its sensing mechanism. Any variations to the characteristics of the propagation path affect the velocity or amp...

where φb,ξ = (2π)MξT−bDξφ, the modulation operator Mξ, the translation operator T−b and the dilation operator D 1 ξ are defined by (Mξh)(x) = e ixξh(x), (T−bh)(x) = h(x− b), (Dξh)(x) = |ξ|h(ξx), for all x in R and all measurable functions h on R. The Stockwell transform is a versatile tool first introduced in [11]. More recent results on the Stockwell transform in the contexts of applications c...

Dr. Márlio Oliveira is a graduate student, Master of Science in Dentistry Program, Pontifical Catholic University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil, and in the private practice of orthodontics at Rua Mato Grosso, 450 Universal, Betim, Minas Gerais, Brazil; e-mail: marlio_ [email protected]. Dr. Pithon is a Professor of Orthodontics, Southwest Bahia State University, Jequié,...

BACKGROUND AND AIMS In the last decade, genomic studies using DNA markers have strongly influenced the current phylogeny of angiosperms. Genome size and ploidy level have contributed to this discussion, being considered important characters in biosystematics, ecology and population biology. Despite the recent increase in studies related to genome size evolution and polyploidy incidence, only a ...

how to cite this article: akhondian j, ashrafzadeh f, beiraghi toosi m, hashemi n. a rare presentation of neurobrucellosis in a child with recurrent transient ischemic attacks and pseudotumor cerebri (a case report and review of literature). iran j child neurol. 2014 spring; 8(2):65-69.   brucellosis is a multi-system infectious disease that presents with various manifestations and complication...

Recently, numerous studies of aggregate response to freezing have been reported. Aggregate stability has usually been inversely proportional to soil water content at the time of freezing (Bullock et al., 1988; Benoit, 1973; Bryan, 1971; Logsdail and Webber, 1959). Aggregates from poorly aggregated soils, however, are more stable when frozen at intermediate water contents (Mostaghimi et al., 198...

Many insects and other arthropods use substrate vibrations to communicate (Claridge 1985; Barth 1997; Cokl &Virant-Doberlet 2003) or to detect predators and prey (Barth et al. 1988; Pfannenstiel et al. 1995; Meyhofer et al. 1997). Among the substrates used to receive or transmit information, the stems and leaves of plants are the most widespread (Cocroft & Rodriguez 2005). Signal transmission t...

Human aging is associated with many changes, which resemble those seen with deficiencies of sex steroids or growth hormone and with cortisol excess. Among these are decreases in lean body mass (LBM) and muscle strength, loss of bone mineral, increase in body fat, and, in men, reduced libido and erectile function. Circulating total and free testosterone (T) decrease progressively with age in men...

Articular cartilage is an avascular tissue whose chief structural characteristic is a high matrix-to-cell volume ratio. The matrix comprises predominantly type II collagen, other collagen types and high molecular weight aggregating proteoglycans and a variety of non-collagenous proteins. The tissue is biochemically heterogeneous, a heterogeneity which seems to be paralleled by morphologically d...