Results 71 to 80 of about 2,308,949 (362)

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

Statistical Analysis of Factors Associated with Diarrhea in Yemeni Children under Five: Insights from the 2022–2023 Multiple Indicator Cluster Survey

Journal of Epidemiology and Global Health
Diarrheal disease remains a significant cause of preventable morbidity and mortality in the pediatric population, particularly among children below five years of age.
Ali Satty, Mohyaldein Salih, Faroug A. Abdalla, Ashraf F. A. Mahmoud, Elzain A. E. Gumma, Gamal Saad Mohamed Khamis, Ahmed M. A. Adam, Abaker A. Hassaballa, Omer M. A. Hamed, Zakariya M. S. Mohammed   +9 more
doaj   +1 more source

ChatGPT’s impact on ESP writing proficiency and learner autonomy: An experimental study

Technology in Language Teaching & Learning
This study investigates ChatGPT's efficacy in fostering autonomous ESP writing development across different proficiency levels, while identifying its strengths and limitations in enhancing specific writing competencies.
Amr M. Mohamed, Abdul Aziz Mohamed Mohamed Ali El Deen, Reema O. Abukhait, Fatma Dahleb, Yasmine B. Khan, Hassen A. Jmaiel   +5 more
doaj   +1 more source

A demonstration of high precision GPS orbit determination for geodetic applications [PDF]

High precision orbit determination of Global Positioning System (GPS) satellites is a key requirement for GPS-based precise geodetic measurements and precise low-earth orbiter tracking, currently under study at JPL.
Border, J. S., Lichten, S. M.
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

Karyological and molecular studies between six species of Plantago in the Northern border region at Saudi Arabia

Journal of Taibah University for Science, 2019
Karyotype characters, mitotic metaphase chromosomes, and haploid ideograms of six species of Plantago L. species. Analysis of somatic metaphases showed that the chromosome numbers of these species were 2n = 8 for P. ovata, 2n = 10 for P.
Ahmed Kamal Eldin Osman, Mohamed Abd El-Hameid Abdein   +1 more
doaj   +1 more source

Observation model and parameter partials for the JPL geodetic GPS modeling software GPSOMC [PDF]

The physical models employed in GPSOMC and the modeling module of the GIPSY software system developed at JPL for analysis of geodetic Global Positioning Satellite (GPS) measurements are described.
Border, J. S., Sovers, O. J.
core   +1 more source

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

The border economy; introduction [PDF]

Texas ; Employment (Economic theory) ; North American Free Trade ...
Mine Yücel
core  

Border Security: A Comprehensive Review of the United States’ Approach to Southwest Border Policy [PDF]

, 2015
This paper addresses the effect that the presence of a physical border wall on the southern United States-Mexico border has on deterring unauthorized immigration, illegal drug-trafficking, and countering narco-terrorism.
Pacheco, Nicholas M.
core   +2 more sources