Results 61 to 70 of about 18,079,429 (352)

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Formation mechanism of basalt-related agate deposits: an example from the Ating River alluvial gravels in the Xunke area, Heilongjiang, NE China

Frontiers in Earth Science
This study investigates Xunke agates from Ating River alluvial gravels (Northeast, NE China) using optical microscopy, electron probe microanalyzer mapping (EPMA), and laser ablation–inductively coupled plasma–mass spectrometry (LA–ICP–MS) to constrain ...
Peng Zhang, Bo-Chao Wang, Ji-Lin Zheng, Xiao-Yu Guo   +3 more
doaj   +1 more source

Characteristics and formation mechanism of talc in Permian Maokou Formation, southwestern Sichuan Basin: a case study of first member of Maokou Formation in well A1

Shiyou shiyan dizhi, 2021
Different forms of talc have been developed in the first member of Permian Maokou Formation (P2m1) in the Sichuan Basin. As a hydrothermal alteration mineral, its formation mechanism and its influence on the P2m1 reservoir need to be further explored ...
Haixia REN, Xiaobing LIN, Ye LIU, Yonghong JING, Yumei ZHONG, Baoping KANG, Zhiying HAN   +6 more
doaj   +1 more source

Role of delay in the mechanism of cluster formation

, 2013
We study the role of delay in phase synchronization and phenomena responsible for cluster formation in delayed coupled maps on various networks. Using numerical simulations, we demonstrate that the presence of delay may change the mechanism of unit to ...
A. Pikovsky, Aradhana Singh, Jürgen Kurths, M. Lakshmanan, Sarika Jalan   +4 more
core   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Q-ball Formation through Affleck-Dine Mechanism [PDF]

, 2000
We present the full nonlinear calculation of the formation of a Q-ball through the Affleck-Dine (AD) mechanism by numerical simulations. It is shown that large Q-balls are actually produced by the fragmentation of the condensate of a scalar field whose ...
A. Cohen, A. Kusenko, A. Kusenko, A. Kusenko, A. Kusenko, A. Kusenko, G. Dvali, I. Affleck, K. Enqvist, K. Enqvist, K. Enqvist, K. Enqvist, M. Dine, M. Kawasaki, M. Laine, S. Coleman, S. Kasuya, S.Yu. Khlebnikov   +17 more
core   +2 more sources

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

FEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi, Pilar Samperio Ventayol, Natalie Burkard, Nicolas Schlegel, Carmen Aguilar, Sina Bartfeld   +5 more
wiley   +1 more source

Formation-Evolutionary Mechanism Analysis and Impacts of Human Activities on the 20 August 2019 Clustered Debris Flows Event in Wenchuan County, Southwestern China

Frontiers in Earth Science, 2021
Characterized by large scale, high frequency, and strong destructiveness, debris flow has become the most noticeable geohazards throughout the world, especially in the mountainous areas of southwestern China.
Yu Li, Xing-nian Liu, Bin-rui Gan, Xie-kang Wang, Xing-guo Yang, Hai-bo Li, Xing-yu Long, Jia-wen Zhou   +7 more
doaj   +1 more source

Dark matter and the first stars: a new phase of stellar evolution

, 2007
A mechanism is identified whereby dark matter (DM) in protostellar halos dramatically alters the current theoretical framework for the formation of the first stars.
A. Burkert, B. Rossi, Douglas Spolyar, Katherine Freese, Paolo Gondolo   +4 more
core   +1 more source

Organoids in pediatric cancer research

FEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source