Results 31 to 40 of about 5,988,743 (297)

Alkylation of Complex Glycine Precursor (CGP) as a Prebiotic Route to 20 Proteinogenic Amino Acids Synthesis

Molecules
It is not known why the number of proteinogenic amino acids is limited to 20. Since Miller’s experiment, many studies have shown that amino acids could have been generated under prebiotic conditions.
Chiaki Kuroda, Kensei Kobayashi
doaj   +1 more source

Reassessing late-stage impact assumptions in light of modern planet formation paradigms

Frontiers in Astronomy and Space Sciences
In this Perspective, we examine the implications of modern cold-accretion and disk-mediated paradigms for two widely cited impact hypotheses: the Moon-forming giant impact and the Late Heavy Bombardment, with attention to consequences for planetary ...
Brian Turner
doaj   +1 more source

The early Earth [PDF]

Nature, 1993
Proterozoic Crustal Evolution. Edited byK. C. Condie Elsevier: 1993. Pp. 537. DFL280, $175.
openaire   +1 more source

Whole Earth? Developing an early childhood education response

, 2016
Whilst Education for Sustainable Development (ESD) is now a growing area of research interest particularly within the Higher Education sector, Early Childhood Education for Sustainability is by contrast much less well developed.
Kemp, N., Bolshaw, P.
core   +2 more sources

Scaled biotic disruption during early Eocene global warming events [PDF]

, 2012
Late Paleocene and early Eocene hyperthermals are transient warming events associated with massive perturbations of the global carbon cycle, and are considered partial analogues for current anthropogenic climate change.
Murphy, B.H., Edgar, K.M., Bown, P.R., P. R. Bown, Sluijs, A., B. H. Murphy, Pälike, H., Zachos, J. C., Bolton, Clara, Edgar, K. M.; id_orcid, Bolton, C.T., Paelike, H., Edgar, Kirsty M., Gibbs, S.J., Gibbs, Samantha J., Pälike, Heiko, Murphy, B. H., C. T. Bolton, A. Sluijs, H. Pälike, K. M. Edgar, J. C. Zachos, Zachos, J.C., S. J. Gibbs, Edgar, K. M., Marine Palynology, Marine palynology and palaeoceanography, Bown, P. R., Bown, Paul R., Murphy, Brandon H., Sluijs, Appy, Bolton, C. T., Gibbs, S. J., Zachos, James C., Research Programme in Earth Sciences Utrecht (DES / IVAU)   +34 more
core   +2 more sources

On the survivability and detectability of terrestrial meteorites on the moon [PDF]

, 2008
Materials blasted into space from the surface of early Earth may preserve a unique record of our planet's early surface environment. Armstrong et al. (2002) pointed out that such materials, in the form of terrestrial meteorites, may exist on the Moon and
Taylor, E.A., Tsembelis, K., Crawford, Ian, Baldwin, E.C., Bailey, J.A.   +4 more
core   +1 more source

The Impact of the COVID‐19 Pandemic on Childhood Cancer Survival: A Population‐Based Assessment of Survival Patterns Between 2015 and 2023 in Germany

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Numerous international studies have reported declines in new cancer diagnoses, delayed diagnoses and disruptions in cancer treatment following the implementation of COVID‐19 pandemic public health measures, raising concerns that these effects may ultimately contribute to increased cancer mortality.
Friederike Erdmann, Maike Wellbrock, Javier Louro, Arndt Borkhardt, Martin Schrappe, Claudia Trübenbach, Desiree Grabow, Cécile M. Ronckers, Joachim Schüz   +8 more
wiley   +1 more source

Referral Patterns and Diagnostic Timeliness in Pediatric Cancer: A Hospital‐Based Study in Indonesia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Timely diagnosis and treatment are critical for improving survival among children with cancer. In low‐ and middle‐income countries (LMICs), delays are common and may be influenced by fragmented referral pathways and diagnostic limitations.
Nur Melani Sari, Regina Hadi Putri, Fatimah Assyifa, Judith Spijkerman, Gertjan Johannes Kaspers, Susi Susanah   +5 more
wiley   +1 more source

Climate variability off Africa's southern Cape over the past 260 000 years [PDF]

Climate of the Past
During the late Quaternary, the climatic conditions in southern South Africa experienced significant fluctuations, notably in temperatures and precipitation.
K. Purcell, K. Purcell, K. Purcell, M. H. Simon, M. H. Simon, M. H. Simon, E. J. Pryor, E. J. Pryor, S. J. Armitage, S. J. Armitage, H. J. L. van der Lubbe, E. Jansen, E. Jansen, E. Jansen   +13 more
doaj   +1 more source

Exercise Capacity, Physical Activity, Fatigue, and Neurocognitive Function in Adult Survivors of Childhood Acute Lymphoblastic Leukemia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Adult survivors of childhood acute lymphoblastic leukemia (ALL) are at risk of reduced exercise capacity, decreased physical activity levels, persistent fatigue, and neurocognitive deficits. The aim was to investigate exercise capacity and physical activity levels of adult survivors of childhood ALL and their associations with ...
Laura Jess, Gustaf Glavå, Simon Skau, Hans‐Georg Kuhn, Maria Bäck, Marianne Jarfelt   +5 more
wiley   +1 more source