Results 91 to 100 of about 2,942,248 (264)
Effects of El Niño on the dynamics of Lake Alchichica, central Mexico [PDF]
Geofísica Internacional, 2003 Lake Alchichica is a deep, warm-monomictic lake in Puebla State, central Mexico. Water temperature, dissolved oxygen and chlorophyll a annual concentration patterns are compared under ENSO and non-ENSO conditions.
Alfonso Lugo, Javier Alcocer
doaj
Representative Pathways of Excitation Migration in Photosystem I [PDF]
Journal of Chemical Physics 119, 1313 (2003), 2002 Photosystem I is a protein-pigment complex that performs photosynthesis in plants, green algae, and cyanobacteria. It contains an aggregate of chlorophylls that absorbs light and delivers the resulting electronic excitation to the special pair of chlorophylls where the excitation energy is used for producing charge separation across the cell membrane ...
arxiv
Some Physiochemical Parameters and Phytoplankton Standing Crop in Four Northeast Arkansas Commercial Fish Ponds [PDF]
, 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
Strong enhancement of chlorophyll a concentration by a weak typhoon
, 2010 Recent studies demonstrate that chlorophyll a (chl a) concentrations in the surface ocean can be significantly enhanced due to typhoons. The present study investigated chl a concentrations in the middle of the South China Sea (SCS) from 1997-2007.
Fu, Yun-Fei +4 more
core +1 more source
Frontiers in Marine Science, 2020 Sea ice in the Arctic Ocean (AO) has been undergoing dramatic changes during the last two decades. In addition, the water temperature of the inflow of Atlantic water masses at the gateway Fram Strait has recently increased.
Eva-Maria Nöthig +14 more
doaj +1 more source
Responses of tomato (Solanum lycopersicum L.) plants to iron deficiency in the root zone [PDF]
, 2019 Iron deficiency induces a yellowing in the aerial part of plants, known as iron chlorosis, and reduces the growth, yield, and quality of the fruits. Understanding plant response to iron deficiency is essential for agronomic management. This study decoded
Casanova, Laura +6 more
core +2 more sources
Oceanologia, 2013 Continuous measurements of the aerosol particle number concentration (PNC)in the size range from 4.5 nm to 2 µm were performed at the Preila marine background site during 2008–2009.The concentration maxima in summer was twice the average (2650±50 cm-3 ...
Dalia Jasinevičiene +3 more
doaj +1 more source
Application of Different Simulated Spectral Data and Machine Learning to Estimate the Chlorophyll a Concentration of Several Inland Waters [PDF]
arXiv, 2019 Water quality is of great importance for humans and for the environment and has to be monitored continuously. It is determinable through proxies such as the chlorophyll a concentration, which can be monitored by remote sensing techniques. This study focuses on the trade-off between the spatial and the spectral resolution of six simulated satellite ...
arxiv