Results 91 to 100 of about 22,909,306 (342)

Water quality changes in floodplain lakes due to the Amazon River flood pulse: Lago Grande de Curuaí (Pará)

open access: yesBrazilian Journal of Biology
Assurance of water quality for human consumption is essential for public health policies. In the Amazon floodplain, the seasonal water level variation causes periodic flooding of marginal areas that are usually used for settlements, agriculture and ...
AG Affonso, C. Barbosa, EMLM. Novo
doaj   +1 more source

Chlorophyll-a concentrations in 82 large alpine lakes on the Tibetan Plateau during 2003–2017: temporal–spatial variations and influencing factors

open access: yesInternational Journal of Digital Earth, 2021
As essential parts of the unique ecosystem of Tibetan Plateau (TP), the sizes and associated physical properties of alpine lakes have long been investigated. However, little is known about one of the most critical biogeochemical properties, i.e.
Xuehui Pi   +8 more
doaj   +1 more source

Living Biotherapeutics Using Nanoparticles‐Armed Cyanobacteria for Boosting Photodynamic‐Immunotherapy of Cancer

open access: yesAdvanced Science, EarlyView.
A schematic illustration of the cyanobacteria‐based biohybrid platform for photodynamic cancer therapy enhanced PDT. The platform continuously outputs O2 (to alleviate tumor hypoxia) and 1O2 (for tumor treatment), achieving improved photodynamic immunotherapy. Abstract The interdisciplinary development of synthetic biology and material sciences propels
Zhengwei Xu   +14 more
wiley   +1 more source

Factors Influencing Leaf Chlorophyll Content in Natural Forests at the Biome Scale

open access: yesFrontiers in Ecology and Evolution, 2018
Chlorophyll (Chl) is an important photosynthetic pigment to the plant, largely determining photosynthetic capacity and hence plant growth. However, this concept has not been verified in natural forests, especially at a large scale.
Ying Li   +8 more
semanticscholar   +1 more source

Blockchain‐Empowered H‐CPS Architecture for Smart Agriculture

open access: yesAdvanced Science, EarlyView.
This article reviews the current system architectures for smart agriculture and proposes a blockchain‐empowered hierarchical cyber‐physical system (H‐CPS) framework. It discusses the challenges and outlines future research directions, including the use of semantic blockchain to handle complex data and models.
Xiaoding Wang   +8 more
wiley   +1 more source

Some Physiochemical Parameters and Phytoplankton Standing Crop in Four Northeast Arkansas Commercial Fish Ponds [PDF]

open access: yes, 1972
Physicochemical conditions and chlorophyll a standing crop were studied from July 1970 through June 1971 in four commercial catfish ponds at the Arkansas State University Experiment Farm near Walcott, Greene County, Arkansas.
Beadles, John K., Wilkes, Haldor Marvin
core   +2 more sources

Antagonistic Ghd7‐OsNAC42 Complexes Modulate Carbon and Nitrogen Metabolism to Achieves Superior Quality and High Yield in Rice

open access: yesAdvanced Science, EarlyView.
The complex centered on Ghd7 binds to numerous carbon and nitrogen metabolism genes on the genome through the corresponding motifs and transactivates the transcriptional expression of these carbon and nitrogen metabolism genes. With the assistance of OsNAC42 and other unknown Ghd7‐interacting proteins, this complex can regulate different metabolic ...
Guangming Lou   +23 more
wiley   +1 more source

Retrieval of Chlorophyll-a and Total Suspended Solids Using Iterative Stepwise Elimination Partial Least Squares (ISE-PLS) Regression Based on Field Hyperspectral Measurements in Irrigation Ponds in Higashihiroshima, Japan

open access: yesRemote Sensing, 2017
Concentrations of chlorophyll-a (Chl-a) and total suspended solids (TSS) are significant parameters used to assess water quality. The objective of this study is to establish a quantitative model for estimating the Chl-a and the TSS concentrations in ...
Zuomin Wang   +5 more
doaj   +1 more source

Strengthened ocean-desert process in the North Pacific over the past two decades

open access: yesEnvironmental Research Letters, 2021
North Pacific ocean desert (NPOD) refers to the subtropical North Pacific Ocean of low chlorophyll-a (Chl-a) concentrations, as the largest ocean desert globally. Studies have suggested a development of NPOD over recent decades based on limited evidences
Siyu Meng   +9 more
doaj   +1 more source

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