OBJECTIVE The purpose of this study was to investigate the effects of oral fluids and archwire-bracket friction on the surface characteristics of NiTi alloy orthodontic archwires with/without aesthetic coating, in vivo for 2-3 months. MATERIALS AND METHODS Different cross-sections of NiTi Archwires (DENTSPLY GAC International) and Titanol Cosmetic Archwires (FORESTADENT® USA Inc.) were examin...

The sizes and shapes (physiognomy) of fossil leaves are widely applied as proxies for paleoclimatic and paleoecological variables. However, significant improvements to leaf-margin analysis, used for nearly a century to reconstruct mean annual temperature (MAT), have been elusive; also, relationships between physiognomy and many leaf ecological variables have not been quantified. Using the recen...

We conducted a statewide survey of Oklahoma small mammals to test for antibodies against rodent-borne viral diseases. Four rodent species had antibody to Sin Nombre virus (SNV), the primary causative agent of hantavirus pulmonary syndrome (HPS), and two species had antibody to Whitewater Arroyo virus, an arenavirus associated with human fatalities. The rodent reservoirs for other HPScausing Nor...

species diversity is an index for sustainability of rangeland ecosystems. we studied the effect of environmental factors (soil properties and aspects) on plant species diversity in zagros mountainous rangelands (vegetation type: festuca ovina-astragalus parrowianus) in the west of hamadan in march–july 2009. for this purpose, four aspects were defined in the study area. vegetation types were st...

What we generally regard as ‘the face’ should be semiotically understood not something given and monolithic, but rather stratified – it is at least threefold: biological (face), physiognomic (expression), perceivable (visage) relational has to put within a narrative in order make sense. The face lies the centre of whole semiotic system, form life, revolving around issue identity (which visage, ...

the oriental arborvitae habitat with an area of 223­ha. is located on 20 km south of fazel­abad, golestan province. the lowest and highest of its height are 820 and 1680 m.a.s.l. the floristic-physiognomic investigation performed by walked-field procedure at 2nd seasonal sequence showed that flora of this region includes 173 plant species that belong to 147 genera and 65 families, of which 5 sp...

Leaf functional traits in a plant community are the result of effect environmental conditions and have direct impact on ecosystem properties functioning. We analyzed variations five leaf communities from central Argentina under different climatic anthropogenic use determining changes physiognomy. Study sites were located Córdoba province (Argentina) within four phytogeographic units categorized...

Background & Aim: Medicinal plants, Since time immemorial, have been used in virtually all cultures as a source of medicine and ethnobotany has prevent to be a valuable method to find new herbal medicine and plant derived drugs. Material & Methods: This study determined medicinally important plants that are most frequently by the local inhabitants of Sistan to treat human diseases. In current ...