Results 61 to 70 of about 12,692,806 (311)

The Aerodynamics of a Falling Hopea Odorata Seed

International Scholastic Journal of Science, 2023
The double-winged seeds of the Hopea odorata tree generate an auto-rotating motion from their elongated sepals as they fall. The flight dynamics of the seed were analyzed using high-speed video.
Jonathan Vitayatanagorn
doaj  

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

Impromptu Deployment of Wireless Relay Networks: Experiences Along a Forest Trail

, 2014
We are motivated by the problem of impromptu or as- you-go deployment of wireless sensor networks. As an application example, a person, starting from a sink node, walks along a forest trail, makes link quality measurements (with the previously placed ...
Anand, S. V. R., Chattopadhyay, Arpan, Coupechoux, Marceau, Dwivedi, Bharat, Ghosh, Avishek, Kumar, Anurag, Rao, Akhila S.   +6 more
core   +1 more source

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Razonamiento incorrecto: falacias y paralogismos

Thēmis, 1995
El estudio de la validez de inferencias cobra especial interés en su aplicación al razonamiento jurídico. Sin duda, el rigor de los principios lógicos, su carácter normativo, nos lleva a evidenciar defectos en el paso de premisas y conclusión que, de no ...
Florencio Mixán Mass
doaj  

Case reports of genital tract tumours in cows

Veterinární Medicína, 2020
The goal of this report is to analyse the incidence of genital tumours in cattle referred to the Clinic between 2016 and 2019 and to describe the outcome after the surgical tumour resection.
Paula Martz, Aycan Oezcan-Martz, Lilli Bittner, Fanny Ebert, Wolf Wippermann, Adriana Woeckel, Denny Boettcher, Walter Baumgartner, Alexander Starke   +8 more
doaj   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Determining the Traction Characteristic of a Tractor in Operating Conditions

Сельскохозяйственные машины и технологии, 2018
One of the most important aspects in terms of increasing the efficiency of agricultural production is the improvement of the methods and tools of determining the main operating indicators of tractors as they influence the productivity, efficiency and ...
A. G. Arzhenovskiy, D. S. Kozlov, N. A. Petrishchev   +2 more
doaj   +1 more source

Study of anatomical, histological and cytological characteristics of the thymus of lambs

Theoretical and Applied Veterinary Medicine, 2020
Thymus of lambs of the Ouled-Djellal breed from eastern Algeria, aged one to 10 months, were used to study the anatomical, histological and cytological characteristics of these organs.
D. E. Rahmoun, M. A. Lieshchova, S. Chaanbi, S. Chergui   +3 more
doaj   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source