The alterations in cerebral perfusion with graded hypercapnia were measured in the baboon using the intra-carotid xenon clearance technique. In addition, the tidal percent of COj and the blood flow in the common carotid artery were measured using a capnograph and an electromagnetic flowmeter respectively. The delay times between the induced increments in tidal respiratory percent of CO] and the...

Elymus sibiricus as an important forage grass and gene pool for improving cereal crops, that is widely distributed in West and North China. Information on its genetic diversity and relationships is limited but necessary for germplasm collection, conservation and future breeding. Start Codon Targeted (SCoT) markers were used for studying the genetic diversity and relationships among 53 E. sibiri...

Morphologically similar groups of species are common and pose significant challenges for taxonomists. Differences in approaches to classifying unique species can result in some species being overlooked, whereas others are wrongly conserved. The genetic diversity and population structure of the Pterostylis longifolia complex (Orchidaceae) in Tasmania was investigated to determine if four species...

The objective of this present study was to explore the initial establishment of metabolically active bacteria and subsequent evolution in four fractions: rumen solid-phase (RS), liquid-phase (RL), protozoa-associated (RP), and epithelium-associated (RE) through early weaning and supplementing rhubarb root powder in 7 different age groups (1, 10, 20, 38, 41, 50, and 60 d) during rumen developmen...

Strong environmental gradients can affect the genetic structure of plant populations, but little is known as to whether closely related species respond similarly or idiosyncratically to ecogeographic variation. We analysed the extent to which gradients in temperature and rainfall shape the genetic structure of four Stipa species in four bioclimatic regions in Jordan. Genetic diversity, differen...

Nine commercial varieties of pineapples in Malaysia (Josapine, Maspine, MD2, Sarawak, Gandul, N36, Moris, Crystal Honey and Yankee) were collected from various places Peninsular analysed for cultivar identifications using nine simple sequence repeat (SSR) markers. A total 27 alleles have been observed which ranged 2 to 5 with an average 3 per locus. The polymorphic information content (PIC) val...

The degree of sutural closure between bones generally allows for the classification skeleton maturity in tetrapods. In mammals, skull was previously used as proxy to evaluate ontogenetic stage single individuals. However, due temporal variation, this process can be only applied among mammalian subclades, but not all mammals general. contrast, closures bird skulls could a more reliable clade adu...

The invasion of Chromolaena odorata (L.) R.M. King and H.Rob. affects microbial community structure, but seldom do studies focus on bacterial diversity in the rhizosphere C. from different habitats. To reveal impacts communities habitats, functional groups bacteria were compared soil collected three habitats: abandoned land, a mature eucalyptus forest (eight-years), young (one-year). In this st...

the genetic diversity of 89 flue-cured tobacco varieties was examined using 12 issr primers. these cultivarswere evaluated at the guilan tobacco research center, rasht, iran, using a 7×7 simple lattice design with two replications, and 12 morphological traits. the total number of pcr amplified products was 143 bands ranging from 450 to 3000 bp, of which 108 bands (74.28%) were polymorphic. prim...