[Detection of Chlamydia abortus in bovine reproductive losses in the province of La Pampa, Argentina].

Reproductive losses linked to an infectious etiology in bovine cattle are a major economic concern worldwide. In Argentina, more than 50% of abortion cases have unknown causes. Species belonging to Chlamydiaceae family are frequent etiologic agents of abortion around the world; however, there is yet no information on their prevalence in Argentina.

[Presence of Acanthamoeba spp. in watering trough in La Pampa province, Argentina].

Free-living Amoebae of Acanthamoeba genus include non-pathogenic and pathogenic strains that are currently classified in 18 different genotypes, T1-T18. In this study, a survey was carried out to evaluate the presence of Acanthamoeba strains inwatering trough sample in La Pampa province, Argentina. Sample were inoculated onto non-nutrient agar plates and were checked for the presence of Acanthamoeba.

Tuning the polarized quantum phonon transmission in graphene nanoribbons.

We propose systems that allow a tuning of the phonon transmission function T(ω) in graphene nanoribbons by using C(13) isotope barriers, antidot structures, and distinct boundary conditions. Phonon modes are obtained by an interatomic fifth-nearest neighbor force-constant model (5NNFCM) and T(ω) is calculated using the non-equilibrium Green's function formalism. We show that by imposing partial fixed boundary conditions it is possible to restrict contributions of the in-plane phonon modes to T(ω) at low energy.

Spatial distribution of canine zoonotic enteroparasites in Bahía Blanca, Argentina.

The objectives of this research were: (1) to determine the occurrence of zoonotic enteroparasites in dog feces from Bahía Blanca, Argentina; (2) to characterize the spatial distribution of the parasites found in association with the quality of life index (QLI) in neighborhoods of Bahía Blanca; and (3) to determine if the presence of a particular parasite genus in a stool sample was facilitated or impeded by the presence of other parasite genera. Samples of dog stools (n=475) were collected between December 2012 and December 2013 in areas with varying QLI. The association between QLI values and the presence of parasites was analyzed using logistic regression.