Comparison of SARS-CoV-2 PCR-Based Detection Using Saliva or Nasopharyngeal Swab Specimens in Asymptomatic Populations

Our study shows that saliva is a noninvasive respiratory secretion sample type that contains equal or more host materials (RNase P), compared with those contained in the corresponding NP swab specimens, in 103 paired samples. SARS-CoV-2 detection with two RNA extraction platforms, Maxwell and MagNA Pure, with CDC qPCR chemistry showed similar test sensitivities for paired specimens.

Do second language learners always know what they know about L2 collocations? Exploring the acquisition of conscious and unconscious structural knowledge of L2 collocations

This study investigated the acquisition of conscious and unconscious structural knowledge of L2 collocations. The participants were two groups of 68 Chinese undergraduate students from the university community. The first group judged the typicality of 24 English collocations and their atypical counterparts and reported the basis of each judgment to indicate their conscious status. The second group were trained on 24 new collocations and then took a similar test. Results showed that learners acquired both conscious and unconscious structural knowledge of L2 collocations. The conscious status varied according to collocation types. Incidental exposure facilitated the development of conscious structural knowledge of incongruent collocations and unconscious structural knowledge of congruent ones. The advantage of congruent over incongruent collocations was greater for unconscious than conscious structural knowledge. The results are consistent with the theory that unconscious structural knowledge is based on acquiring statistical regularities while conscious structural knowledge codes more one-off exceptions.

Musicianship and neural synchronization at multiple timescales

Auditory events can be considered to have spectral energy at short and long timescales, corresponding to the musical phenomena of pitch and pulse. Neural synchronization—when neurons synchronize their firing with external oscillatory stimuli—can be measured using spectral EEG at both subcortical and cortical levels. It has been shown that subcortical synchronization to tones is more robust in musicians than nonmusicians, suggesting a type of experience-dependent plasticity; a similar test for long timescales has not been investigated. In the current study, EEG was measured from musicians and nonmusicians while they listened to an isochronous sequence of tones. Neural synchronization at short timescales was found to be stronger in musicians. Additionally, the extent of synchronization correlated with the current level of musical engagement. These findings indicate that the experience-dependent plasticity observed in musicians manifests itself at multiple cortical levels corresponding to oscillations at different timescales present in music.

Musicianship and neural synchronization at multiple timescales

Auditory events can be considered to have spectral energy at short and long timescales, corresponding to the musical phenomena of pitch and pulse. Neural synchronization—when neurons synchronize their firing with external oscillatory stimuli—can be measured using spectral EEG at both subcortical and cortical levels. It has been shown that subcortical synchronization to tones is more robust in musicians than nonmusicians, suggesting a type of experience-dependent plasticity; a similar test for long timescales has not been investigated. In the current study, EEG was measured from musicians and nonmusicians while they listened to an isochronous sequence of tones. Neural synchronization at short timescales was found to be stronger in musicians. Additionally, the extent of synchronization correlated with the current level of musical engagement. These findings indicate that the experience-dependent plasticity observed in musicians manifests itself at multiple cortical levels corresponding to oscillations at different timescales present in music.

Natural Language Processing methods for Document Matching

Data,Information or knoweldge,in this rapidly moving and growing world.we can find any kind of information on Internet.And this can be too useful,however for acedemic world too it is useful but along with it plagarism is highly in practice.Which makes orginality of work degrade and fraudly using someones original work and later not acknowleging them is becoming common.And some times teachers or professors could not identify the plagarised information provided.So higher educational systems nowadays use different types of tools to compare.Here we have an idea to match no of different documents like assignments of students to compare with each other to find out, did they copied each other’s work?Also an idea to compare ideal answeer sheet of particular subject examination to similar test sheets of students.Idea is to compare and on similarity basis we can rank them.Both approach is one kind and that is to compare documents.To identify plagarism there are many methods used already.So we could compare and develop them if needed.

Triangular Test of Amanita Mushrooms by Using Electronic Nose and Sensory Panel

This work aims to advance understanding of the differentiation of mushroom species through electronic devices that use sensors of various technologies and techniques for pattern recognition, comparing mainly volatile substances that emanate from them. In this first phase, the capacity of human olfaction to differentiate between the smell released by different wild mushrooms of the genus Amanita was analyzed by means of a triangular sensory test, comparing later the data to those obtained for the same samples with an electronic nose in a similar test. The results, still very preliminary, encourage imagining the wide application that these techniques will have and the feedback that this application can suppose for the training of the sense of human olfaction.