Results 71 to 80 of about 6,313,750 (303)

A novel automated label data extraction and data base generation system from herbarium specimen images using OCR and NER

open access: yesScientific Reports
Digital extraction of label data from natural history specimens along with more efficient procedures of data entry and processing is essential for improving documentation and global information availability.
Atsuko Takano   +2 more
doaj   +1 more source

Spatiotemporal Variation of Vegetation on the Qinghai–Tibet Plateau and the Influence of Climatic Factors and Human Activities on Vegetation Trend (2000–2019)

open access: yesRemote Sensing, 2020
Vegetation is the terrestrial ecosystem component most sensitive to climate change. The Qinghai–Tibet Plateau (QTP), characterized by a cold climate and vulnerable ecosystems, has experienced significant warming in previous decades.
Junhan Chen, Feng Yan, Qi Lu
doaj   +1 more source

Marx on Historical Materialism [PDF]

open access: yes, 2017
Marx’s theory of historical materialism seeks to explain human history and development on the basis of the material conditions underlying all human existence. For Marx, the most important of all human activities is the activity of production by means of
Baur, Michael
core  

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

A Probabilistic Logic Programming Event Calculus

open access: yes, 2013
We present a system for recognising human activity given a symbolic representation of video content. The input of our system is a set of time-stamped short-term activities (STA) detected on video frames.
ALEXANDER ARTIKIS   +27 more
core   +1 more source

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

A Quantitative Assessment of The Impacts of Agricultural Development, With A Focus on Food Security and Desertification Risk in The Balajam Plain of Torbat Jam County, Khorasan Razavi Province [PDF]

open access: yesمدیریت بیابان
Desertification poses a significant threat to ecosystems worldwide, particularly in arid and semi-arid regions. In recent decades, this issue has been exacerbated by intensified human activities, including agricultural expansion.
Mostafa Rezvanimoghadam   +3 more
doaj   +1 more source

Editorial: Bridging the gap between policy and science in assessing the health status of marine ecosystems [PDF]

open access: yes, 2016
Human activities,both established and emerging, increasingly affect the provision of marine ecosystem services that deliver societal and economic benefits.
Austen, Melanie   +10 more
core   +2 more sources

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

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

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