Analyse structurale et architecture de l'inflorescence des Begoniaceae

1994 ◽  
Vol 72 (7) ◽  
pp. 897-914 ◽  
Author(s):  
Isabelle Goulet ◽  
Denis Barabé ◽  
Luc Brouillet
Keyword(s):  
Qualitative And Quantitative ◽  
Whole Plant ◽  
Inflorescence Structure ◽  
Analyse Structurale ◽  
Quantitative Analyses ◽  
Architectural Models ◽  
The Difference ◽  
Global And Local ◽  
Two Sides ◽  
Local Levels

The inflorescence structure of Begoniaceae was analyzed taking into account their degree of symmetry. Qualitative and quantitative analyses of 71 species led to the recognition of nine architectural models. When the whole plant is considered, the inflorescence of Begoniaceae is a thyrse. Comparative analyses of the models allowed to determine at what level symmetry or asymmetry is found. There is a correlation between the total lengths of axes and between flower numbers on the best and least developed sides of an inflorescence. For the whole family, the difference between the two sides of the inflorescence is significant for the former, and not for the latter. Divergence angles on the best developed side do not differ from those on the least developed one for a same ramification, and likewise between successive levels of ramification. Thus, the inflorescence appears asymmetrical if total length of axes is considered. These results tend to support the hypothesis that the Begoniaceae are fundamentally asymmetrical. Inflorescence symmetry is found in some groups by stabilization and compensation of different asymmetric components at the global and local levels. Nevertheless, inflorescence asymmetry does not seem to be related to plant architecture, although it seems to be related to the degree of foliar asymmetry. Key words: Begoniaceae, inflorescence, cyme, inflorescential architecture, structural asymmetry.

scholarly journals YouTube as an Airlines Marketing Tool

2018 ◽  
Vol 7 (1) ◽  
pp. 45-69
Author(s):  
Martina Pásková ◽  
Jan Hruška ◽  
Josef Zelenka
Keyword(s):  
Social Media ◽  
Low Cost ◽  
Social Media Analytics ◽  
Research Results ◽  
Qualitative And Quantitative ◽  
Quantitative Analyses ◽  
The Difference ◽  
Marketing Tool ◽  
Changes Over Time ◽  
The Way

Abstract Multimedia communication through social media has been experiencing constantly growing significance in the field of airline marketing. The aim of the research presented in this paper was to find out and, with the help of both qualitative and quantitative analyses, describe the way YouTube is used by airlines. The research was conducted in the form of a comparative study with the objective of identifying the difference between YouTube performance of full-service carriers (FSCs) and low-cost carriers (LCCs). The intention was to identify which factors influence the effectiveness of airline marketing conducted via YouTube an as well as the way in which they do it. Analysis of selected data was facilitated by social media analytics tool SocialBakers, content analyses and a correlation analysis of YouTube metrics, selected on the base of previous research results. The research data were collected twice during the year 2017 in order to reflect changes over time. Research results showed that FSCs build their YouTube channels more systematically than LCCs. FSCs offer a substantially wider range of video topics and often sort out topics of their videos in a more detailed way. Regarding the basic metrics of YouTube channels (total number of views, number of subscribers), FSCs surpass LCCs significantly. One reason for their much higher rate of views is the fact that FSCs use celebrities more frequently, and frequently they offer high-quality impression/relationship airline presentation.

scholarly journals ЈЕЗИЧКА НОРМА И ОДНОС ПРЕМА ЈЕЗИЧКОЈ ВАРИЈАЦИЈИ У НАСТАВИ ФРАНЦУСКОГ КАО СТРАНОГ ЈЕЗИКА: ПРИМЕР УПОТРЕБЕ ДИРЕКТНОГ ПАРЦИЈАЛНОГ ПИТАЊА СА УПИТНИМ ПРИЛОЗИМА

TEME ◽  
2020 ◽  
pp. 339
Author(s):  
Nataša Radusin-Bardić
Keyword(s):  
Foreign Language ◽  
Word Order ◽  
Spoken Language ◽  
Foreign Language Teaching ◽  
French Language ◽  
Linguistic Variation ◽  
Qualitative And Quantitative ◽  
Quantitative Analyses ◽  
The Difference ◽  
Definition Of

Different attitudes towards the definition of linguistic variations are noticeable in contemporary teaching of French as a foreign language. The difference depends on whether it is viewed from the perspective of traditionally understood exemplary linguistic levels le bon usage, from the standpoint of propositions – the “basic French language” the SGAV methodology is based on; or with the emergence of a communicative approach in foreign language teaching from the perspective of a moderately conservative and flexible attitude towards conservative linguistic norms. In order to study how linguistic variations in the teaching of French as a foreign language are treated, our research was based on an analysis of the use of different forms for expressing a direct partial question with interrogative adverbs où, quand, comment and pourquoi in seven selected methods published from the middle of the last century until the present day. The results of the qualitative and quantitative analyses of the abovementioned interrogative forms in the selected methods, illustrate significant oscillations in terms of the representation of interrogative forms derived from inversion and those which, contrary to the conservative linguistic norm and in accordance with the general tendencies in the French spoken language, preserve the word order characteristic of a statement. The obtained results indicate an expressed need for a more consistent pragmatic definition of linguistic variation in the contemporary teaching of French as a foreign language.

In situ microprobe quantitation of inorganic particle burden in paraffin sections of lung tissue

1988 ◽  
Vol 46 ◽  
pp. 990-991
Author(s):  
Jerrold L. Abraham
Keyword(s):  
Lung Tissue ◽  
Quantitative Information ◽  
Particulate Material ◽  
Paraffin Sections ◽  
Tissue Samples ◽  
Qualitative And Quantitative ◽  
The Past ◽  
Quantitative Analyses ◽  
Data Result

Inorganic particulate material of diverse types is present in the ambient and occupational environment, and exposure to such materials is a well recognized cause of some lung disease. To investigate the interaction of inhaled inorganic particulates with the lung it is necessary to obtain quantitative information on the particulate burden of lung tissue in a wide variety of situations. The vast majority of diagnostic and experimental tissue samples (biopsies and autopsies) are fixed with formaldehyde solutions, dehydrated with organic solvents and embedded in paraffin wax. Over the past 16 years, I have attempted to obtain maximal analytical use of such tissue with minimal preparative steps. Unique diagnostic and research data result from both qualitative and quantitative analyses of sections. Most of the data has been related to inhaled inorganic particulates in lungs, but the basic methods are applicable to any tissues. The preparations are primarily designed for SEM use, but they are stable for storage and transport to other laboratories and several other instruments (e.g., for SIMS techniques).

Qualitative and quantitative analyses of some Plantago species from Serbia and Montenegro

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
T Jankovic ◽  
G Zdunic ◽  
K Savikin ◽  
I Beara ◽  
N Mimica-Dukić
Keyword(s):  
Serbia And Montenegro ◽  
Qualitative And Quantitative ◽  
Quantitative Analyses

Inheritance of Some Morphological Characteristics of Parental Lines in Mustard-Rape Hybrid

2020 ◽  
pp. 23-30
Keyword(s):  
First Generation ◽  
Agronomic Traits ◽  
Morphological Characteristics ◽  
Morphological Characters ◽  
Hybrid Plant ◽  
Distant Hybridization ◽  
Degree Of Dominance ◽  
Whole Plant ◽  
Row Width ◽  
The Difference

Distant hybridization is known to play an important role in expanding the gene pool of any crop. It is believed that the combination of different genomes in one nucleus, as a rule, is accompanied by the phenomenon of “genomic shock”, resulting in a variety of genetic and epigenetic changes. This provides a wealth of material for the selection of genotypes adapted to different environmental conditions. Interspecific hybrids in different combinations were obtained in the genus Brassica, however, until now, interest in distant hybridization in this genus has not died out, since such important crops as rapeseed and mustard demand an improvement of many important agronomic traits. The aim of this work was to study the degree of manifestation of morphological characters of a leaf, flower, and plant as a whole in the hybrid obtained by crossing of brown mustard of the variety Slavyanka and a collection specimen of spring rape. Seeds were sown in the spring of 2019 in a field with 30 cm row width. During the flowering period a number of morphological characters of a flower, leaf, and the whole plant were analyzed. Each parameter was evaluated with 10 plants. The degree of dominance in first-generation hybrid was calculated by the formula of Beil, Atkins (1965). The dominance coefficients were not determined in the case when the difference between the parental samples was insignificant. Differences between parental samples were determined by Student t-test. The level of heterosis was calculated according to the formula of Rasul et al (2002). In a mustard-rapeseed hybrid, the size of the leaves of the lower row was inherited by the type of rapeseed, which had larger leaves than mustard. The height of the hybrid plant was inherited by the type of mustard (hp = 1.32, Ht = 4.89%), and intermediate inheritance was observed for the length of the internodes (hp = -0.48). The size of the flower petals and sepals was inherited by the type of rapeseed, and significant heterosis was observed for the length of the pistil (Ht = 33.57%). The data obtained are of interest for understanding the interaction of genes of different genomes in the genus Brassica.

scholarly journals Assessment of Photo-Induced Cytotoxic Activity of Cachrys sicula and Cachrys libanotis Enriched-Coumarin Extracts against Human Melanoma Cells

Plants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 123
Author(s):  
Mariangela Marrelli ◽  
Maria Rosaria Perri ◽  
Valentina Amodeo ◽  
Francesca Giordano ◽  
Giancarlo A. Statti ◽  
...  
Keyword(s):  
Phenolic Content ◽  
Melanoma Cells ◽  
Therapeutic Approaches ◽  
Qualitative And Quantitative ◽  
Aerial Parts ◽  
Naturally Occurring ◽  
Quantitative Analyses ◽  
Solid Liquid ◽  
Uva Radiation

Photochemotherapy is one of the most interesting current therapeutic approaches for the treatment of melanoma. Different classes of naturally occurring phytochemicals demonstrated interesting photoactive properties. The aim of this study was to evaluate the photocytotoxic potential of two Cachrys species from Southern Italy: C. sicula and C. libanotis (Apiaceae). The enriched-coumarin extracts were obtained from aerial parts through both traditional maceration and pressurized cyclic solid-liquid (PCSL) extraction using Naviglio extractor®. Qualitative and quantitative analyses of furanocoumarins were performed with GC-MS. The photocytotoxic effects were verified on C32 melanoma cells irradiated at a dose of 1.08 J/cm2. The apoptotic responses were also assessed. Moreover, phenolic content and the in vitro antioxidant potential were estimated. Xanthotoxin, bergapten, and isopimpinellin were identified. All the samples induced concentration-dependent photocytotoxic effects (IC50 ranging from 3.16 to 18.18 μg/mL). The C. libanotis sample obtained with Naviglio extractor® was the most effective one (IC50 = 3.16 ± 0.21 μg/mL), followed by C. sicula sample obtained with the same technique (IC50 = 8.83 ± 0.20 μg/mL). Both Cachrys samples obtained through PCSL induced up-regulation of apoptotic signals such as BAX (Bcl2-associated X protein) and PARP (poly ADP-ribose polymerase) cleavage. Moreover, these samples proved to be more photoactive, giving a greater upregulation of p21 protein in the presence of UVA radiation. Obtained results suggest that investigated species could be promising candidates for further investigations aimed to find new potential drugs for the photochemotherapy of skin cancer.

scholarly journals A framework for identifying and learning from countries that demonstrated exemplary performance in improving health outcomes and systems

2020 ◽  
Vol 5 (12) ◽  
pp. e002938
Author(s):  
Austin Carter ◽  
Nadia Akseer ◽  
Kevin Ho ◽  
Oliver Rothschild ◽  
Niranjan Bose ◽  
...  
Keyword(s):  
Mixed Methods ◽  
Global Health ◽  
Health Outcomes ◽  
Mixed Methods Research ◽  
Multidisciplinary Teams ◽  
Ongoing Research ◽  
Qualitative And Quantitative ◽  
Success Stories ◽  
Quantitative Analyses ◽  
Comprehensive Framework

This paper introduces a framework for conducting and disseminating mixed methods research on positive outlier countries that successfully improved their health outcomes and systems. We provide guidance on identifying exemplar countries, assembling multidisciplinary teams, collecting and synthesising pre-existing evidence, undertaking qualitative and quantitative analyses, and preparing dissemination products for various target audiences. Through a range of ongoing research studies, we illustrate application of each step of the framework while highlighting key considerations and lessons learnt. We hope uptake of this comprehensive framework by diverse stakeholders will increase the availability and utilisation of rigorous and comparable insights from global health success stories.

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