Results 71 to 80 of about 2,260,402 (296)

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

open access: yesFEBS 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

Dynamic Characteristic of CST Gear Transmission System Under Varying Load Working Condition

open access: yesJixie chuandong, 2017
In order to analyze the dynamic characteristics of gear transmission system in the controlled starting transmission( CST),taking the heavy scraper conveyor under varying load working condition as example,a virtual prototype of the system is established ...
Chang Hao   +4 more
doaj  

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS 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   +2 more
wiley   +1 more source

Research on key technologies of bearing preload of spindle based on piezoelectric actuators

open access: yesThe Journal of Engineering, 2019
This study analysed the influence of bearing preload on the stiffness of spindle bearings. MATLAB/Simulink is used to calculate the vibration of simplified spindle system.
Junping Zhang, Chuang Zuo, Rongjun Ye
doaj   +1 more source

Thermodynamic analysis of the partially evaporating trilateral cycle [PDF]

open access: yes, 2013
The potential of Organic Rankine Cycles (ORC) to recover low grade waste heat is well known. The high heat recovery potential is partially attributed to a good match of the temperature profiles between working fluid and waste heat stream in the ...
De Paepe, Michel   +2 more
core   +1 more source

Temperature dependent band structure of the Kondo insulator

open access: yes, 1998
We present a Qantum Monte Carlo (QMC) study of the temperature dependent dynamics of the Kondo insulator. Working at the so-called symmetrical point allows to perform minus-sign free QMC simulations and thus reach temperatures of less than 1% of the ...
C. Gröber   +12 more
core   +1 more source

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

open access: yesFEBS 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   +5 more
wiley   +1 more source

Semi-empirical model of MOST and passive devices focused on narrowband RF blocks [PDF]

open access: yes, 2012
This paper presents a semi-empirical modeling of MOST and passive elements to be used in narrowband radiofrequency blocks for nanometer technologies. This model is based on a small set of look-up tables (LUTs) obtained via electrical simulations.
Fiorelli, Rafaella   +3 more
core  

Organoids in pediatric cancer research

open access: yesFEBS 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

Study on Nonlinear Model of Dynamics of a System ‘Extruder Elastic Auger Working Body’

open access: yesActa Technologica Agriculturae, 2016
The model of dynamics of a system ‘extruder elastic auger working body’ is developed. The design of an extruder elastic screw working body is worked out.
Lyashuk Oleg   +4 more
doaj   +1 more source

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