The number of segregating sites in a sample of DNA sequences and the age of the most recent common ancestor (MRCA) of the sequences in the sample are positively correlated. The value of the former can be used to estimate the value of the latter. Using the coalescent approach, we derive in this paper the joint probability distribution of the number of segregating sites and the age of the MRCA of...

Hormonal profiles of hens in curtain side-walled high-rise deep pit and flush-waste layer houses were initiated at placement of hens in cages in August and continued through a 50 weeks long laying trial. In mid-January, a cold weather-related incident caused the rupture of water lines and flooding of the manure pits in the deep pit layer house, allowing atmospheric ammonia to rise to a high of ...

Objective - The aim of this study was to measure the ratio of bone cortex (C) to bone diameter (D), (C/D) in radius/tibia, metacarpus /metatarsus and proximal phalanges in fore and hindlimbs to be used as a diagnostic guide in metabolic and nutritional diseases in Minature Donkey. Design- Experimental study Animals- Eight adult Minature donkeys. Procedures- Lateromedial, dorsopalmar and dors...

Coastal locations around the United States, particularly along Atlantic coast, are experiencing recurrent flooding at high tide. Continued sea-level rise (SLR) will exacerbate issue where present, and many more begin to experience high-tide (HTF) in coming decades. Here we use established SLR scenarios thresholds demonstrate how combined effects of nodal cycle modulations tidal amplitude lead a...

The present study investigates the contribution of fundamental frequency (F0) in native English and native French listeners‟ segmentation of French speech. The results of a word-monitoring task with resynthesized stimuli show that pitch accents modulated speech segmentation for both groups, but unlike native listeners, the English listeners, who were at mid and high proficiencies in French, wer...

The rise of angiosperms has been regarded as a trigger for the Cretaceous revolution of terrestrial ecosystems. However, the timeframe of the rise angiosperm-dominated herbaceous floras (ADHFs) is lacking. Here, we used the buttercup family (Ranunculaceae) as a proxy to provide insights into the rise of ADHFs. An integration of phylogenetic, molecular dating, ancestral state inferring, and dive...

A category of new photochromatic storage material has been found suitable for rewritable digital video disc (DVD). The ratio of transmissivity before and after the write-in process is 3:1 at X = 450 n m (blue) and 1:7 at X = 650 nm (Ed), with a transition time of 2-3 ns. The number of write-erase cycles is about 1,000. MO aor PC can have the same advantage. However, since there are some specid ...

Цель исследования – оценить эффективность, безопасность и травматичность эндоскопической дискэктомии в сравнении с традиционной микрохирургической дискэктомией. Материал и методы. Выполнено 330 эндоскопических дискэктомий по методике Дестандо и 964 открытых микрохирургических дискэктомии. Сравнивали длительность операции, продолжительность послеоперационного постельного режима и пребывания паци...