110 research outputs found
The vision of RTA in the Vedas
The rsis developed their view of the nature of the world and man's role therein, from a visionary insight which they claimed not only as an heirloom from their ancestors but also as having themselves developed. Their vision embraces the whole cosmic order and regards the process of manifestation as a continuous unfoldment in accordance with one basic law of harmony, rta: the world order exhibits a balance of all those factors that contribute to its making, a holding together in mutual tension of all opposites. Rta is thus considered as both the mode and regulator whereby all things manifest, evolve, and adjust to changing conditions, as well as the overall order resulting from the harmonious working out of all according to the inherent law of existence. As manifestation means action, movement, the dynamic aspect of rta attracts more attention than its static counterpart, the stability of the fixed order which merely emphasises the constancy of change and succession - in paradoxical terms, the unchanging order of change. Three fundamental aspects of rta are studied:1) The natural: the one law that underlies the basic structure of the universe in accordance with which all evolves and from which derive all other laws; hence the law of becoming, of transformation, of harmony. 2) The socio-ethical: the one truth which in the human context of socio-ethical norms can be translated as integrity-integration: man fulfils himself in as much as he lives truly and can therefore integrate himself in the cosmic order. Truth at the human level is equivalent to harmony at the universal level.3) The religio-sacrificial: the one sacrifice with which the cosmic order is identified, a constant give and take of all its units, an eternal sharing and exchange which itself is rooted in the law of transformation. To this order all beings contribute in greater or less measure, whatever friction occurring from non-cooperation or opposition, being finally offset by the greater pull towards harmony. Nothing can really over-ride the one law. Through the agency of gods and men rta as the "pattern in the heaven" is made manifest at the natural level and in the norms and ethics of human society. Man's sacrificial ritual is seen as his microscopic attempt at re-enacting the macroscopic drama of the dynamics of rta. The Rgvedic vision of cosmic wholeness contains the seeds of many of the later speculative theories of Hindu philosophy
The Effects of Collaborative Grouping on Student Engagement in Middle School Students
This action research project investigated the impact of collaborative grouping on students’ engagement in three middle level STEM (science, technology, engineering or math) classrooms. Research was conducted in two rural and one urban setting. Four data collection tools were used: A semantic rating scale (student questionnaire), teacher observations, student interviews, and teacher journaling. Data was categorized into three domains of student engagement: emotional, cognitive, and behavioral. Teamwork strategies were overtly taught to students before the study with additional instruction during the observation process as needed. While quantitative evidence implied a slight decrease in preference for collaborative learning by student’s self-report, qualitative data showed positive results across the implementation. Research findings support the finding that collaborative grouping has a positive impact on student learning and fosters socialemotional skills beneficial for overall functioning in today’s environment. Our findings suggest that middle-level classrooms benefit from incorporating collaborative learning activities when preceded by intentional group formation, instruction on how to participate effectively as a member of a collaborative team, and supplemented by re-teaching of group skills or re-grouping, as indicated by evidence of student engagement
TOWARD TARGET 2 OF THE GLOBAL STRATEGY FOR PLANT CONSERVATION: AN EXPERT ANALYSIS OF THE PUERTO RICAN FLORA TO VALIDATE NEW STREAMLINED METHODS FOR ASSESSING CONSERVATION STATUS
Target 2 of the 2020 Global Strategy for Plant Conservation (GSPC) calls for a comprehensive list of the world\u27s threatened plant species. The lack of such a list is one of the greatest impediments to protecting the full complement of the world\u27s plant species, and work to achieve this has been slow. An efficient system for identifying those species that are at risk of extinction could help to achieve this goal in a time frame sensitive to today\u27s conservation needs. Two systems that efficiently use available data to assess conservation status were tested against a provisional International Union for Conservation of Nature and Natural Resources (IUCN) Red List analysis to evaluate the native seed plant species of Puerto Rico. It was demonstrated that both systems efficiently identify species at risk, which is a step toward both the GSPC Target 2 and a more comprehensive IUCN Red List for plants. Both systems were effective at identifying plant species at risk, with the New York analysis identifying 98% and the Smithsonian analysis 85% of the plant species considered Threatened in the IUCN Red List. Both analyses to some extent overestimated those plants at risk, but the species identified are all range restricted and, thus, of some conservation interest
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Age of acquisition of 299 words in seven languages: American English, Czech, Gaelic, Lebanese Arabic, Malay, Persian and Western Armenian
We present a new set of subjective Age of Acquisition (AoA) ratings for 299 words (158 nouns, 141 verbs) in seven languages from various language families and cultural settings: American English, Czech, Scottish Gaelic, Lebanese Arabic, Malaysian Malay, Persian, and Western Armenian. The ratings were collected from a total of 173 participants and were highly reliable in each language. We applied the same method of data collection as used in a previous study on 25 languages which allowed us to create a database of fully comparable AoA ratings of 299 words in 32 languages. We found that in the seven languages not included in the previous study, the words are estimated to be acquired at roughly the same age as in the previously reported languages, i.e. mostly between the ages of 1 and 7 years. We also found that the order of word acquisition is moderately to highly correlated across all 32 languages, which extends our previous conclusion that early words are acquired in similar order across a wide range of languages and cultures
The Promise and Pitfalls of Facebook Advertising: a Genetic Counselor’s Perspective
Facebook advertising is a powerful tool for increasing the outreach and recruitment of research participants. We describe our experience as genetic counselors within the context of an internet-based research study, recruiting subjects for a Parkinson disease (PD) biomarker study
IL6 and CRP haplotypes are associated with COPD risk and systemic inflammation: a case-control study
<p>Abstract</p> <p>Background</p> <p>Elevated circulating levels of C-reactive protein (CRP), interleukin (IL)-6 and fibrinogen (FG) have been repeatedly associated with many adverse outcomes in patients with chronic obstructive pulmonary disease (COPD). To date, it remains unclear whether and to what extent systemic inflammation is primary or secondary in the pathogenesis of COPD.</p> <p>The aim of this study was to examine the association between haplotypes of <it>CRP</it>, <it>IL6 </it>and <it>FGB </it>genes, systemic inflammation, COPD risk and COPD-related phenotypes (respiratory impairment, exercise capacity and body composition).</p> <p>Methods</p> <p>Eighteen SNPs in three genes, representing optimal haplotype-tagging sets, were genotyped in 355 COPD patients and 195 healthy smokers. Plasma levels of CRP, IL-6 and FG were measured in the total study group. Differences in haplotype distributions were tested using the global and haplotype-specific statistics.</p> <p>Results</p> <p>Raised plasma levels of CRP, IL-6 and fibrinogen were demonstrated in COPD patients. However, COPD population was very heterogeneous: about 40% of patients had no evidence of systemic inflammation (CRP < 3 mg/uL or no inflammatory markers in their top quartile). Global test for haplotype effect indicated association of <it>CRP </it>gene and CRP plasma levels (P = 0.0004) and <it>IL6 </it>gene and COPD (P = 0.003). Subsequent analysis has shown that <it>IL6 </it>haplotype H2, associated with an increased COPD risk (p = 0.004, OR = 4.82; 1.64 to 4.18), was also associated with very low CRP levels (p = 0.0005). None of the genes were associated with COPD-related phenotypes.</p> <p>Conclusion</p> <p>Our findings suggest that common genetic variation in <it>CRP </it>and <it>IL6 </it>genes may contribute to heterogeneity of COPD population associated with systemic inflammation.</p
A Plant DJ-1 Homolog Is Essential for Arabidopsis thaliana Chloroplast Development
Protein superfamilies can exhibit considerable diversification of function among their members in various organisms. The DJ-1 superfamily is composed of proteins that are principally involved in stress response and are widely distributed in all kingdoms of life. The model flowering plant Arabidopsis thaliana contains three close homologs of animal DJ-1, all of which are tandem duplications of the DJ-1 domain. Consequently, the plant DJ-1 homologs are likely pseudo-dimeric proteins composed of a single polypeptide chain. We report that one A. thaliana DJ-1 homolog (AtDJ1C) is the first DJ-1 homolog in any organism that is required for viability. Homozygous disruption of the AtDJ1C gene results in non-viable, albino seedlings that can be complemented by expression of wild-type or epitope-tagged AtDJ1C. The plastids from these dj1c plants lack thylakoid membranes and granal stacks, indicating that AtDJ1C is required for proper chloroplast development. AtDJ1C is expressed early in leaf development when chloroplasts mature, but is downregulated in older tissue, consistent with a proposed role in plastid development. In addition to its plant-specific function, AtDJ1C is an atypical member of the DJ-1 superfamily that lacks a conserved cysteine residue that is required for the functions of most other superfamily members. The essential role for AtDJ1C in chloroplast maturation expands the known functional diversity of the DJ-1 superfamily and provides the first evidence of a role for specialized DJ-1-like proteins in eukaryotic development
Transcriptomic response of the red tide dinoflagellate, Karenia brevis, to nitrogen and phosphorus depletion and addition
<p>Abstract</p> <p>Background</p> <p>The role of coastal nutrient sources in the persistence of <it>Karenia brevis </it>red tides in coastal waters of Florida is a contentious issue that warrants investigation into the regulation of nutrient responses in this dinoflagellate. In other phytoplankton studied, nutrient status is reflected by the expression levels of N- and P-responsive gene transcripts. In dinoflagellates, however, many processes are regulated post-transcriptionally. All nuclear encoded gene transcripts studied to date possess a 5' <it>trans</it>-spliced leader (SL) sequence suggestive, based on the trypanosome model, of post-transcriptional regulation. The current study therefore sought to determine if the transcriptome of <it>K. brevis </it>is responsive to nitrogen and phosphorus and is informative of nutrient status.</p> <p>Results</p> <p>Microarray analysis of N-depleted <it>K. brevis </it>cultures revealed an increase in the expression of transcripts involved in N-assimilation (nitrate and ammonium transporters, glutamine synthetases) relative to nutrient replete cells. In contrast, a transcriptional signal of P-starvation was not apparent despite evidence of P-starvation based on their rapid growth response to P-addition. To study transcriptome responses to nutrient addition, the limiting nutrient was added to depleted cells and changes in global gene expression were assessed over the first 48 hours following nutrient addition. Both N- and P-addition resulted in significant changes in approximately 4% of genes on the microarray, using a significance cutoff of 1.7-fold and p ≤ 10<sup>-4</sup>. By far, the earliest responding genes were dominated in both nutrient treatments by pentatricopeptide repeat (PPR) proteins, which increased in expression up to 3-fold by 1 h following nutrient addition. PPR proteins are nuclear encoded proteins involved in chloroplast and mitochondria RNA processing. Correspondingly, other functions enriched in response to both nutrients were photosystem and ribosomal genes.</p> <p>Conclusions</p> <p>Microarray analysis provided transcriptomic evidence for N- but not P-limitation in <it>K. brevis</it>. Transcriptomic responses to the addition of either N or P suggest a concerted program leading to the reactivation of chloroplast functions. Even the earliest responding PPR protein transcripts possess a 5' SL sequence that suggests post-transcriptional control. Given the current state of knowledge of dinoflagellate gene regulation, it is currently unclear how these rapid changes in such transcript levels are achieved.</p
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