7,868 research outputs found
The nomenclature of the lycophyte species Phlegmariurus mingcheensis Ching (Huperziaceae)
No full textIn 1982, Ren Chang Ching twice described the same lycophyte species under the names Lycopodium mingcheense (published in April; the original "minchegense" spelling being a correctable error) and Phlegmariurus mingcheensis Ching (published in May). Phlegmariurus mingcheensis cannot be taken as a combination based on Lycopodium mingcheense because in the original publication a different holotype was indicated and the name Lycopodium mingcheense was not mentioned. The correct names for this species in Huperzia, Lycopodium, and Phlegmariurus are Huperzia mingcheensis (Ching) Holub (basionym: Phlegmariurus mingcheensis), Lycopodium mingcheense Ching, and Phlegmariurus mingcheensis Ching, respectively. The recent lectotypification of the name Lycopodium mingcheense using P.S. Chiu 2069 (PE) was redundant since this specimen was clearly indicated as the holotype in Ching's original publication. The recent new name Phlegmariurus mingjoui X.C. Zhang is an illegitimate superfluous name
Fen ve teknolojileri laboratuvar uygulama derslerinin sınıf öğretmen adaylarının fen laboratuvar tutumlarına etkisinin incelenmesi
No full textFen derslerinde yer alan bazı kavramların öğrenciler tarafından daha doğru ve kalıcı bir şekilde öğretilebilmesi için deneysel uygulamalardan sıklıkla yararlanmak gerekmektedir. Fen alanında yapılan çalışmalar deneysel uygulamaların öğrencilerin fen kavramlarını kavrama ve akılda tutma becerilerini arttırdığını ortaya koymaktadır. Bununla birlikte deney yapan öğrencilerin bilimsel düşünme becerilerinin de geliştiği, fene yönelik tutumlarında önemli ölçüde iyileşme kaydedildiğini ortaya koyan çalışmalar da mevcuttur. Gerek okullardaki fiziki olanak yoksunluklarından gerekse öğretmenlerin bu alandaki yetersizliklerinden kaynaklı olarak ilk ve orta öğretim düzeyinde laboratuvar becerileri ile kazanımların yeterince verilemediği pek çok çalışmanın konusu olmuştur. Bu olumsuzluğu ortadan kaldırmak için okullardaki laboratuvar gereksinimleri karşılamak kadar öğretmen adaylarının deneysel uygulamalar konusundaki eksikliklerinin giderilmesi de önemlidir. Eğitim fakültelerinde bu alanda gerçekleştirilecek çabaların geleceğin öğretmenlerinin hem fene yönelik tutumlarının artırılmasında hem de fen laboratuvarıyla ilgili becerilerinin geliştirilmesinde olumlu bir etkiye neden olacağı düşünülmektedir. Bu çalışmada fen ve teknolojileri laboratuvar uygulama derslerinin sınıf öğretmeni adaylarının fen laboratuvar tutumlarına etkisi incelenmeye çalışılmıştır. Bu kapsamda sınıf öğretmeni adaylarının birinci dönem başındaki, sonundaki ve ikinci dönem sonundaki fen laboratuvar tutum düzeyleri değerlendirilmiştir. Nicel ve nitel verilerin birlikte toplandığı çalışmada araştırma yöntemi olarak karma model çeşitlerinde sıralı açıklayıcı desen kullanılmıştır. Araştırmanın çalışma grubunu Mersin Üniversitesi Eğitim Fakültesi Sınıf Öğretmenliği Anabilim Dalında 2017-2018 eğitim öğretim döneminde fen ve teknolojileri laboratuvar uygulamaları 1 ve 2 derslerini alan 52 öğretmen adayı oluşturmaktadır. Çalışma kapsamında öğretmen adaylarına birinci dönem başında, sonunda ve ikinci dönem sonunda Çakmak tarafından 2008 yılında geliştirilen “Fen Laboratuvarı Tutum Ölçeği” ön test, ara test ve son test olarak uygulanmıştır. Ayrıca akademik başarı olarak alt düzey, orta düzey ve üst düzey ikişer öğretmen adayı ile açık uçlu görüşmeler yapılmıştır. Yapılan analizler sonucunda, öğretmen adaylarının fen laboratuvar tutumlarının istatistiksel olarak arttığı bulunmuştur. Ayrıca yapılan görüşmelerde ise, öğretmen adaylarının daha önce deney yapmadıkları için fen laboratuvar dersinden çekindikleri fakat ders sürecinde bu çekinmenin kalmadığı ve derslerde eğlenmeye başladıkları gibi sonuçlara ulaşılmıştır
Experiment level curation identifies high confidence transcriptional regulatory interactions in neurodevelopment
No full textThe capacity to computationally reconstruct gene regulatory networks using large-scale biological data is currently limited by the absence of a high confidence set of one-to-one regulatory interactions. Given the lengthy history of using small scale experimental assays to investigate individual interactions, we hypothesize that a reliable collection of gene regulatory interactions could be compiled by systematically inspecting the published literature. To this end, we developed a curation protocol to examine and record evidence of regulatory interactions at the individual experiment level. Focusing on the area of brain development, we applied our pipeline to 1,310 publications. We identified 3,601 individual experiments, providing detailed information about 1,499 regulatory interactions. Many of these interactions have verified activity specifically in the embryonic brain. By capturing reports of regulatory interactions at this level of granularity, we present a resource that is more interpretable than other similar resources.
List of Tables in TSV format:
Supplementary Table S1. List of candidate papers
Supplementary Table S2. List of TFs
Supplementary Table S3. Curated records at the experiment level
Supplementary Table S4. Curated records summarized at the DTRI level
Supplementary Table S5. TF Perturbation experiment details
Supplementary Table S6. TF-DNA Binding experiment details
Supplementary Table S7. TF-reporter experiment details
Supplementary Table S8. All DTRI records including those curated in external databases
Supplementary Table S9. Records obtained from external databases
Supplementary Table S10. List of differentially expressed genes following Pax6 perturbation
Supplementary Table S11. Experiments with negative results
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The Scottish borders fens : controls on vegetation development and composition.
No full textThe Scottish Borders fens represent an important group of British fen sites. Despite their
small size many of these fens support various rare plant communities and nationally and
locally rare plant species as well as a wide range of species characteristic of wetland habitats.
This study has demonstrated the importance of management history, site chemical conditions
and site size and morphology in the vegetation development of the Scottish Borders fens.
2. Sixty-eight sites were included in a general survey. The vegetation at these sites was
systematically recorded. Site features (vegetation rafts, springs, drains), surrounding land-use,
gross peat stratigraphy and measurements of pH and electrical conductivity of the fen water
were also recorded. A subset of contrasting sites was selected for detailed investigations into
site chemical conditions and peat fertility, peat stratigraphy and the development of vegetation
rafts.
The quadrat data were analysed using a range of multivariate classification procedures. One
classification was selected as the basis for the description of Scottish Borders fen plant
communities. Twenty-four plant communities and variants are described representing rich-fen,
poor-fen, bog, tall herb fen, fen meadow and swamp habitat types. The Scottish Borders fen
plant communities were compared to existing comprehensive classifications of British fen
vegetation.
4. The impact of marl and peat extraction at each site was investigated using documentary,
visual and stratigraphic evidence for disturbance at each site. The status of each site was
determined (cutover, partly cutover, un-disturbed) and this was related to the development of
the present vegetation. Most of the Scottish Borders fens have been cut for peat or marl to
some extent. However at some sites the peat stratigraphic sequences represent un-modified
peat development since the late glacial. The efficiency of drains, strength of springs and basin
morphology are important factors determining the development of vegetation over former peat
and marl cuttings.
5. Site chemical conditions show much variation. The intensity of the surrounding land-use is
positively correlated with peat fertility at the edges and water inflows of sites. The main axes
of floristic variation correspond to the variation in base-richness of the fen water and fertility.
There was no simple relationship between chemical variables and the occurrence of different
plant communities.
6. The vegetation has developed as a quaking raft over fluid peat at many sites. Two Sphagnum
dominated plant communities are confined to vegetation rafts. Their occurrence is determined
by the inundation of the vegetation surface with base-rich water, the depth of the fluid peat
beneath the raft and the degree of isolation of the vegetation surface from telluric water input.
Where the vegetation has developed as a raft over the entire site the thickest rafts are found in
the central areas. The mechanisms of central raft thickening are thought to be influenced by
differential fluctuation of the water table relative to the vegetation surface across sites
Mapping the Discipline of the Olympic Games An Author-Cocitation Analysis
No full textThe authors conducted an author cocitation analysis on prominent authors writing about the Olympics during the 1990s. Author cocitation is an established bibliometric technique that can be used to measure the relative similarities of topics written about by the cited authors. This enables a visual representation of the “intellectual space” of the discipline, in this case the Olympics, to be created for the period under review. So core and peripheral research areas are identified, along with their major contributors. The representation appears as a two-dimensional cluster-enhanced map. Subject expertise was then applied to the results to place labels on the generated clusters of authors and their topics
Effect of Monascus-fermented products on the development of diabetes and insulin production, and adiponectin expression
No full textAn new multifunctional-strain of Monascus purpureus NTU 568, isolated from Chinese red mold rice
No full textAnti-diabetic Effects of Monascus purpureus NTU 568 Fermented Products on Streptozotocin-Induced Diabetic Rats
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