Results 41 to 50 of about 36,451 (292)

Quantitative Resolution of Phosphorus Sources in an Agricultural Watershed of Southern China: Application of Phosphate Oxygen Isotopes and Multiple Models

Agronomy
Phosphorus is the primary contributor to eutrophication in water bodies, and identifying phosphorus sources in rivers is crucial for controlling phosphorus pollution and subsequent eutrophication.
Dengchao Wang, Jingwei Tan, Xinhua Gao, Shanbao Liu, Caole Li, Linghui Zeng, Yizhe Wang, Fan Wang, Qiuying Zhang, Gang Chen   +9 more
doaj   +1 more source

Estimating submarine groundwater discharge and associated nutrient inputs into Daya Bay during spring using radium isotopes

Water Science and Engineering, 2018
Daya Bay, a semi-enclosed bay in the South China Sea, is well known for its aquaculture, agriculture, and tourism. In recent years, many environmental problems have emerged, such as the frequent (almost yearly) occurrence of harmful algal blooms and red ...
Jing-yan Gao, Xue-jing Wang, Yan Zhang, Hai-long Li   +3 more
doaj   +1 more source

New 26P(p, γ)27S Thermonuclear Reaction Rate and Its Astrophysical Implications in the rp-process

The Astrophysical Journal, 2023
Accurate nuclear reaction rates for ^26 P( p , γ ) ^27 S are pivotal for a comprehensive understanding of the rp -process nucleosynthesis path in the region of proton-rich sulfur and phosphorus isotopes.
S. Q. Hou, J. B. Liu, T. C. L. Trueman, J. G. Li, M. Pignatari, C. A. Bertulani, X. X. Xu   +6 more
doaj   +1 more source

Terrigenous subsidies in lakes support zooplankton production mainly via a green food chain and not the brown food chain

Frontiers in Ecology and Evolution, 2022
Terrestrial organic matter (t-OM) has been recognized as an important cross-boundary subsidy to aquatic ecosystems. However, recent evidence has shown that t-OM contributes little to promote secondary production in lakes because it is a low-quality food ...
Fumiya Hirama, Jotaro Urabe, Hideyuki Doi, Takehiro Kazama, Takumi Noguchi, Tyler H. Tappenbeck, Izumi Katano, Izumi Katano, Masato Yamamichi, Takehito Yoshida, Takehito Yoshida, James J. Elser   +11 more
doaj   +1 more source

ISOTOPICALLY EXCHANGEABLE PHOSPHORUS IN SOILS

Journal of Soil Science, 1957
Summary Methods used to determine isotopically exchangeabIe phosphorus in soils are described and briefly analysed. The influence of soil: solution ratio, orthophosphate ions added with radio‐phosphorus, the equilibrium pH, and the removal of increasing amounts of phosphate from the soil are investigated. A scheme
openaire   +1 more source

Solar‐Driven Ammonia Synthesis From Nitrate Reduction Paired With CO2 Capture for Sustainable Agriculture via a Robust CuPd Heterojunction

Angewandte Chemie, EarlyView.
Laser‐assisted synthesis of CuPd amorphous/crystalline heterojunction demonstrates >80% Faradaic efficiency for nitrate‐to‐ammonia electroreduction across wide potential windows. The integrated solar‐powered electrolyzer achieves 6% solar‐to‐ammonia energy efficiency at 0.4 sun, 6–20 mg h−1 CO2 capture rate, and stability exceeding 100 h.
Weihua Guo, Xiaofeng Huang, Yangbo Ma, Yun Song, Zihao Li, Qiang Zhang, Yinger Xin, Jianjun Su, Mingming He, Ruixuan Wang, Rui Xue, Xing Li, Shibo Xi, Jian Wang, Shenlong Zhao, Siwei Zhang, Ben Zhong Tang, Alex K. Y. Jen, Ruquan Ye   +18 more
wiley   +2 more sources

Predicting Nutrient Incontinence in the Anthropocene at Watershed Scales

Frontiers in Environmental Science, 2020
Quantifying nutrient attenuation at watershed scales requires long-term water chemistry data, water discharge, and detailed nutrient input chronicles.
Rebecca J. Frei, Rebecca J. Frei, Benjamin W. Abbott, Remi Dupas, Sen Gu, Gerard Gruau, Zahra Thomas, Tamara Kolbe, Luc Aquilina, Thierry Labasque, Anniet Laverman, Ophelie Fovet, Florentina Moatar, Gilles Pinay   +13 more
doaj   +1 more source

The Phosphorus, Sulfur, Argon, and Calcium Isotopic Composition of the Galactic Cosmic Ray Source [PDF]

, 2009
Galactic cosmic ray (GCR) measurements of the phosphorus, sulfur, argon, and calcium isotopes made by the Cosmic Ray Isotope Spectrometer aboard the Advanced Composition Explorer are reported over the energy range from ~100 to ~400 MeV nucleon^(–1).
Binns, W. R., de Nolfo, G. A., Israel, M. H., Leske, R. A., Mewaldt, R. A., Moskalenko, I. V., Ogliore, R. C., Stone, E. C., von Rosenvinge, T. T., Wiedenbeck, M. E.   +9 more
core  

Separación isotópica de Si mediante la DMFIR con dos frecuencias [PDF]

, 2017
InfraRed Multi-Photon Dissociation (IRMPD) is a highly selective laser isotope separation technique. This process consists of a sequential IR photon absorption from the ground vibrational state up to dissociation by a molecule that contains the isotope ...
Azcárate, María Laura, Codnia, Jorge, D'accurso, Violeta, Risaro, Matías Ariel   +3 more
core   +2 more sources

Stabilization of Single Metal Atoms on Graphitic Carbon Nitride: Synthetic Strategies and Emerging Applications

Advanced Science, EarlyView.
This review highlights recent advancements in stabilizing single metal atoms on graphitic carbon nitride emphasizing innovative synthesis strategies and emerging applications in electrocatalysis, photocatalysis and organic transformations, along with key challenges and future perspective. Abstract Emerging as a new frontier in catalysis science, single‐
Wenyao Zhang, Junjie Cui, Zhenjie Yao, Boyuan Zhu, Nithinraj Panangattu Dharmarajan, Ajayan Vinu, Junwu Zhu   +6 more
wiley   +1 more source