Etude palynologique preliminaire du bassin houiller de Lorraine; application a la correlation des couches

1960 ◽  
Vol S7-II (5) ◽  
pp. 527-533
Author(s):  
Boris Alpern

Abstract Preliminary results of qualitative and quantitative analyses of microspores from Carboniferous coals of the Lorraine basin, France, are presented in the form of five palynologic sections, four in seams being exploited in the Westphalian C and D (Merlebach, Cuvelette, Simon, and Sainte-Fontaine) and the other in the Valmont 1 borehole. Correlations between the five sections are suggested; these are based on the use of Densosporites, Lycospora, Torispora, Crassosporites, Punctatosporites, and Verrucososporites as guide genera.

2013 ◽  
Vol 9 (1) ◽  
pp. 23-35 ◽  
Author(s):  
Irit Kupferberg ◽  
Izhak Gilat

The study focuses on the discursive self-construction of suicidal help seekers in an open computer-mediated forum for mental help. Our theoretical framework is inspired by a functionalist approach to discourse, which emphasizes that language resources are selfdisplaying. It also espouses discursive psychology, which prioritizes the study of psychological and social phenomena in discursive processes. In addition, we adopt the Four World Approach to the analysis of positioning. Qualitative and quantitative analyses show that the density of ‘irrealis’ (i.e. negation, future and wishes) units and figurative forms was significantly higher in the suicidal messages compared with the messages of other troubled selves, who produced more ‘realis’ units (i.e. specific and generic stories) and information questions. We interpret these findings as showing that in their attempt to conceptualize conflict and pain, suicidal help-seekers shied away from the narration of past experience and focused instead on the construction of death. The other troubled help seekers used realis units and questions in order to describe their experience to guarantee that help would be provided.


1990 ◽  
Vol 22 (5) ◽  
pp. 59-62 ◽  
Author(s):  
A. Marjanović

Qualitative analyses of water from the River Danube were conducted to determine changes in the concentrations of heavy metals during the period 1985 to 1987. The samples were collected from a locality situated on the right bank of the river at the village of Vinča. The heavy metals Pb, Cd, Zn, Cu, Fe, Mn, As, Ni, and Hg were found to be constantly present in the river water, whereas Cr3+ and Cr6+ were not detected. It was found that the tendency for levels of these heavy metals to increase had ceased. The number of samples containing major ecotoxic elements (Pb, Cd, and Hg) was reduced, and a slight improvement was also recorded with regard to the other heavy metals, with the exception of Zn.


Author(s):  
Jerrold L. Abraham

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).


Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
T Jankovic ◽  
G Zdunic ◽  
K Savikin ◽  
I Beara ◽  
N Mimica-Dukić

2019 ◽  
Vol 71 ((suppl.1)) ◽  
pp. 209-243
Author(s):  
J.K.H. Koh ◽  
D.J. Court

This paper discusses the preliminary results of the first comprehensive survey of the spiders of the Bukit Timah Nature Reserve (BTNR) in Singapore. Two plots were established in each of the three zones of vegetation, viz., primary forest, old secondary forest, and maturing secondary forest. They were repeatedly sampled over an 18-month period. Sorting of the collection so far suggests that the three vegetation zones harbour rather different spider assemblages. Only ~9% of the total spider fauna recovered was shared by all three zones. The results have also yielded a preliminary picture of dominance, abundance and rarity. Although first intended to obtain a baseline for future quantitative analyses, the survey became a testing ground to modify and refine methodology so as to conduct future quantitative surveys with greater scientific rigour. Taxonomic work on the samples so far shows that the spiders in the BTNR span over 43 families, of which six families are listed for the first time in Singapore. The tally is summarised in an interim checklist of BTNR spiders. The checklist, with a total of 317 entries, shows that there are 158 described species of spiders in BTNR, of which 25 species are new records for Singapore. Another 159 morphospecies are provisionally recognised as distinct species, some of which may be new to science. Our observations during the survey have allowed us to provide a narrative of BTNR spider diversity against a backdrop of their microhabitat specialisation.


Plants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 123
Author(s):  
Mariangela Marrelli ◽  
Maria Rosaria Perri ◽  
Valentina Amodeo ◽  
Francesca Giordano ◽  
Giancarlo A. Statti ◽  
...  

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.


2020 ◽  
Vol 5 (12) ◽  
pp. e002938
Author(s):  
Austin Carter ◽  
Nadia Akseer ◽  
Kevin Ho ◽  
Oliver Rothschild ◽  
Niranjan Bose ◽  
...  

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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