Results 61 to 70 of about 7,712,883 (398)

Description of a fossil camelid from the Pleistocene of Argentina, and a cladistic analysis of the Camelinae

open access: yesSwiss Journal of Palaeontology, 2020
We describe a well-preserved South American Lamini partial skeleton (PIMUZ A/V 4165) from the Ensenadan (~ 1.95–1.77 to 0.4 Mya) of Argentina. The specimen is comprised of a nearly complete skull and mandible with full tooth rows, multiple elements of ...
Sinéad Lynch   +2 more
doaj   +1 more source

Future large hydropower dams impact global freshwater megafauna [PDF]

open access: yes, 2019
Dam construction comes with severe social, economic and ecological impacts. From an ecological point of view, habitat types are altered and biodiversity is lost.
Berlekamp, Juergen   +5 more
core   +1 more source

Developing evidence‐based, cost‐effective P4 cancer medicine for driving innovation in prevention, therapeutics, patient care and reducing healthcare inequalities

open access: yesMolecular Oncology, EarlyView.
The cancer problem is increasing globally with projections up to the year 2050 showing unfavourable outcomes in terms of incidence and cancer‐related deaths. The main challenges are prevention, improved therapeutics resulting in increased cure rates and enhanced health‐related quality of life.
Ulrik Ringborg   +43 more
wiley   +1 more source

The Curious Case of Sick Keesar: Tracing the Roots of South Asian Presence in the Early Republic

open access: yesJournal of Transnational American Studies, 2017
This article is part of a larger monograph on India in the American imaginary that seeks to trace Indo-American interactions as mediated by the triangulated relationship between India, Britain, and the US.
Rajender Kaur
doaj   +1 more source

The origin and distribution of neotropical species of Campylopus [PDF]

open access: yes, 1990
Of the 65 species of Campylopus known from tropical America, 33 are andine in distribution, 16 are found only in SE Brazil, 8 have wide ranges through Central and South America, 3 species are disjunct in SE-North America and Brazil, 3 are confined to the
Frahm, Jan-Peter
core  

Monoaromatic compounds in ambient air of various cities: A focus on correlations between the xylenes and ethylbenzene [PDF]

open access: yes, 2001
Speciation of o-xylene, m-xylene, p-xylene and ethylbenzene was performed by gas chromatography from ambient air and liquid fuel samples collected at various locations in 19 cities in Europe, Asia and South America.
Avino, P   +5 more
core   +1 more source

Recurrent cancer‐associated ERBB4 mutations are transforming and confer resistance to targeted therapies

open access: yesMolecular Oncology, EarlyView.
We show that the majority of the 18 analyzed recurrent cancer‐associated ERBB4 mutations are transforming. The most potent mutations are activating, co‐operate with other ERBB receptors, and are sensitive to pan‐ERBB inhibitors. Activating ERBB4 mutations also promote therapy resistance in EGFR‐mutant lung cancer.
Veera K. Ojala   +15 more
wiley   +1 more source

The South American species of Lepidium

open access: yesLilloa, 1945
The author gives a key for the determination of the 42 species of Lepidium, describing them and illustrating their differential characters. It describes eight new species: L. grandifructum, L. kalenbornii, L. johnstonii, L. morrisonii, L. scabrifructum,
Leo C. Hitchcock
doaj  

Dammarenediol II enhances etoposide‐induced apoptosis by targeting O‐GlcNAc transferase and Akt/GSK3β/mTOR signaling in liver cancer

open access: yesMolecular Oncology, EarlyView.
Etoposide induces DNA damage, activating p53‐dependent apoptosis via caspase‐3/7, which cleaves PARP1. Dammarenediol II enhances this apoptotic pathway by suppressing O‐GlcNAc transferase activity, further decreasing O‐GlcNAcylation. The reduction in O‐GlcNAc levels boosts p53‐driven apoptosis and influences the Akt/GSK3β/mTOR signaling pathway ...
Jaehoon Lee   +8 more
wiley   +1 more source

UNASUR: Developments in the Defense Area [PDF]

open access: yes, 2013
The article summarizes the last developments in South America towards a common defense area, referring to the history and origins of the Union of South American Nations (UNASUR).Fil: Gil, Luciana Victoria. Universidad de Buenos Aires; Argentina.
Gil, Luciana Victoria
core  

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