Results 81 to 90 of about 1,781,755 (264)

The Nadir Crater offshore West Africa: A candidate Cretaceous-Paleogene impact structure. [PDF]

Sci Adv, 2022
Nicholson U, Bray VJ, Gulick SPS, Aduomahor B.   +3 more
europepmc   +1 more source

Transferrin receptor 1‐mediated iron uptake supports thermogenic activation in human cervical‐derived adipocytes

FEBS Letters, EarlyView.
In this study, we found that human cervical‐derived adipocytes maintain intracellular iron level by regulating the expression of iron transport‐related proteins during adrenergic stimulation. Melanotransferrin is predicted to interact with transferrin receptor 1 based on in silico analysis.
Rahaf Alrifai, Mizuki Seo, Gyath Karadsheh, Fachrur Rizal Mahendra, Máté Á Demény, Ferenc Győry, János András Mótyán, László Fésüs, Endre Kristóf, Rini Arianti   +9 more
wiley   +1 more source

Chicxulub central zone structure and stratigraphy—PEMEX exploration drilling program

Frontiers in Earth Science
The Chicxulub crater was formed by the impact of an asteroid ∼66 Ma ago at the Cretaceous/Paleogene boundary on a carbonate platform in the southern Gulf of Mexico.
Jaime Urrutia-Fucugauchi, Jaime Urrutia-Fucugauchi, Ligia Pérez-Cruz, Ligia Pérez-Cruz, Ligia Pérez-Cruz, Axel Wittmann, José A. Arz, Ignacio Arenillas, Long Xiao, Jiawei Zhao, Vicente Gilabert, Eduardo Salguero-Hernandez   +11 more
doaj   +1 more source

Serotype-Specific Sugars Impact Structure but Not Functions of the Trimeric Autotransporter Adhesin EmaA of Aggregatibacter actinomycetemcomitans. [PDF]

J Bacteriol, 2022
Tang-Siegel GG, Radermacher M, Mintz KP, Ruiz T.   +3 more
europepmc   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

FEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy, Trina Dykstra‐MacPherson, Mathias A. Bell, Peter L. Davies, Ruby May A. Sullan   +4 more
wiley   +1 more source

Globally distributed iridium layer preserved within the Chicxulub impact structure. [PDF]

Sci Adv, 2021
Goderis S, Sato H, Ferrière L, Schmitz B, Burney D, Kaskes P, Vellekoop J, Wittmann A, Schulz T, Chernonozhkin SM, Claeys P, de Graaff SJ, Déhais T, de Winter NJ, Elfman M, Feignon JG, Ishikawa A, Koeberl C, Kristiansson P, Neal CR, Owens JD, Schmieder M, Sinnesael M, Vanhaecke F, Van Malderen SJM, Bralower TJ, Gulick SPS, Kring DA, Lowery CM, Morgan JV, Smit J, Whalen MT, IODP-ICDP Expedition 364 Scientists.   +32 more
europepmc   +1 more source

Scaling and Structural Impact

Procedia Engineering, 2017
Abstract Experiments dealing with impact of large structures, like ships and buses, are cost prohibitive. One possibility is to test scaled models, which unfortunately do not obey the scaling laws due to material strain rate sensitivity. A set of scaling numbers is here presented that allow perfect similarity between model and strain rate sensitive ...
Alves, Marcílio, Oshiro, R.E., Calle, M.A.G., Mazzariol, L.M.   +3 more
openaire   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Experimental Study on the Performance of Polyurethane-Steel Sandwich Structure under Debris Flow

Applied Sciences, 2017
Polyurethane-steel sandwich structure, which creatively uses the polyurethane-steel sandwich composite as a structural material, is proposed to strengthen the impact resistance of buildings under debris flow.
Peizhen Li, Shutong Liu, Zheng Lu
doaj   +1 more source

The Boltysh impact structure: An early Danian impact event during recovery from the K-Pg mass extinction. [PDF]

Sci Adv, 2021
Pickersgill AE, Mark DF, Lee MR, Kelley SP, Jolley DW.   +4 more
europepmc   +1 more source