Results 71 to 80 of about 8,547 (241)

Lower Ordovican acritarchs from successions in England and North Wales. [PDF]

open access: yes, 1979
One hundred and thirty eight acritarch taxa are described from the organic residues of samples collected in North Wales, Shropshire, and the Lake District. The species occur in one or more of 16 microfloral assemblages, selected from 88 prepared samples.
Booth, Graham Arthur
core  

Evidence for regulation of transpiration in nonstomatal plants: insights from bryophyte gametophytes

open access: yesNew Phytologist, EarlyView.
Kinetics of cell wall water vapor potential (Ψcw) and resistance of cell wall and plasmatic membrane to water flux in response to cytoplasmic water potential (Ψcyt) during dehydration. Ψcyt was calculated from the WC at any moment of the dehydration curve by using the relationship between −1/Ψw and WC of pressure volume curves and assuming Ψw = Ψcyt ...
Alicia V. Perera‐Castro   +3 more
wiley   +1 more source

Lower Devonian Gastropoda from the Canadian Arctic Islands

open access: yes, 1978
Gastropods from Lochkovian (Lower Devonian) beds on Prince of Wales and Baillie-Hamilton Island, Canadian Arctic, compose a small but relatively diverse part of a brachiopod-dominated fauna.
R. E. Smith, David M. Rohr
core   +1 more source

NEW DATA ON MIDDLE DEVONIAN CONODONTS FROM SW-SARDINIA:THE SU NUARGI II SECTION REVISITED

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2013
The conodont collection from the nodular limestone beds of the Su Nuargi II outcrop near Domusnovas in SW-Sardinia (Italy) is restudied for the purpose of reassessing the outcrop and updating the conodont collection to the most recent taxonomy. Su Nuargi
SOFIE GOUWY
doaj   +1 more source

Gas exchange and pulmonary stress variations during SCUBA and breath‐hold diving in open seawater

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Healthy, trained divers were studied before, during and after diving in open seawater with different techniques. SCUBA divers (diving to 15 or 40 m with air; cycling at depth) and breath‐hold divers (BHDs; sled‐assisted dives to 15, 25 or 40 m) underwent underwater and surface arterial blood gas (ABG) sampling.
Matteo Paganini   +11 more
wiley   +1 more source

Carboniferous basement rocks of northern Britain [PDF]

open access: yes, 1987
The study of Carboniferous basement rocks of northern Britain has concentrated on the dominantly clastic rock succession which unconformably overlies the Lower Palaeozoic basement and occurs beneath the lowermost Carboniferous limestones in areas ...
Kimber, R.N, Kimber, Roger Neil
core  

Devonian deposits – prospective direction of searching for oil and gas in the subsalt complex of the Сaspian basin

open access: yesGeoresursy, 2017
The regional features of the structure and distribution of the Devonian deposits in the subsalt Paleozoic complex of the Caspian basin are considered taking into account the new drilling data and the results of the interpretation of the aeromagnetic ...
D.K. Azhgaliyev
doaj   +1 more source

Silurian and Lower Devonian anaspids (Agnatha) from Severnaya Zemlya (Russia)

open access: yes, 2002
Märss, Tiiu (2002): Silurian and Lower Devonian anaspids (Agnatha) from Severnaya Zemlya (Russia).
Märss, Tiiu
core   +1 more source

Application of Lithological and Geochemical Approach to Determine the Genesis of Dolomite Cavernous Reservoir (Lower Devonian, Gydan Peninsula)

open access: yesGeoresursy
To evaluate the origin of cavernous hydrocarbon reservoir in the Lower Devonian dolostones (Western Taimyr, eastern coast of the Gydan Peninsula), the host rocks and the infilling carbonate minerals were studied using an integrated approach, including ...
К. Yu. Vasileva   +9 more
doaj   +1 more source

Early diversification of seeds and seed-like structures

open access: yesCarnets de Géologie, 2005
The seed habit is one of the most important evolutionary acquisition in plant evolution. It allowed colonisation of new ecological niches, leading to a level of diversification never observed before.
Prestianni Cyrille
doaj  

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