Results 41 to 50 of about 586,823 (315)

Research progress on geogenic-contaminated high ammonium groundwater

Shuiwen dizhi gongcheng dizhi
Groundwater nitrogen contamination is one of the most prevalent water environment problems worldwide. For a long time, the high concentration of ammonium in groundwater has been attributed to inputs from various human activities.
Yao DU, Yaojin XIONG, Yamin DENG, Yanxin WANG   +3 more
doaj   +1 more source

Ammonium and nitrate impact petal color traits and amino acid profiles differently in Petunia

Ornamental Plant Research, 2022
Nitrogen (N) is vital for ornamental plants to fulfill fundamental cellular functions. Effects of inorganic N, including nitrate and ammonium, on ornamental traits at the biochemical level are less reported.
Hua Guo, Guodong Wang, Peng Zhang, Ge Wang, Zhilong Bao, Fangfang Ma   +5 more
doaj   +1 more source

A catalyst-coated diaphragm assembly to improve the performance and energy efficiency of alkaline water electrolysers

Communications Engineering
Alkaline water electrolysers are ideal for gigawatt-scale hydrogen production due to the usage of non-precious metal and low-cost raw materials. However, their performances are modest with the separated electrode and diaphragm structure which can date ...
Zhuang Xu, Yanying Liu, Xiaobo Cheng, Yunshan Shang, Yongtao Wang, Jing Wang, Wenshi Li, Guangli He   +7 more
doaj   +1 more source

Nessler Method Verification for Determining Ammonia in Shrimp Pond Wastewater and Its Application in the Ammonia Adsorption Test with Lampung Natural Zeolite

Alchemy
Ammonia levels exceeding 0.50 mg/L can threaten organisms in aquatic environments. The Nessler method is one of the ammonia analysis methods based on the reaction between ammonia in a basic solution and Nessler reagent (K2HgI4), forming a colloidal ...
Ni Luh Gede Ratna Juliasih, Lia Madyo Ratri, Andi Setiawan, Mita Rilyanti, Rinawati Rinawati, Agung Abadi Kiswandono, Fitri Kurniawati   +6 more
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Excessive ammonia inhibited transcription of MsU2 gene and furthermore affected accumulation distribution of allantoin and amino acids in alfalfa Medicago sativa

Journal of Integrative Agriculture, 2015
In legume plants, uricase gene (Nodulin-35) plays a positive role in metabolism of ureide and amide compounds in symbiotic nitrogen-fixing in the nodules. In this study, a pot experiment was performed to examine the effects of ammonium application on the
Li WANG, Lin-lin JIANG, Nomura Mika, Tajima Shigeyuki, Xian-guo CHENG   +4 more
doaj   +1 more source

Ammonium Oxathioamidate

Molbank
Ammonium oxathioamidate (1) was synthesised by the reaction between O-ethyl-thioxamate (oxalic acid-1-amide-2-O-ethyl ester) and ammonium hydrogen carbonate in water solution. Compound 1 was fully characterised by both microanalytical (elemental analysis, melting point determination) and spectroscopic means (FT-IR and NMR spectroscopy).
M. Carla Aragoni, David B. Cordes, Anna Pintus, Enrico Podda, Riccardo Serra, Alexandra M. Z. Slawin, J. Derek Woollins, Massimiliano Arca   +7 more
openaire   +5 more sources

Tau acetylation at K331 has limited impact on tau pathology in vivo

FEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto, Yukio Matsuba, Mika Takahashi, Takaomi C. Saido   +3 more
wiley   +1 more source

Determination of NH4+ and NO3- Adsorption and Desorption Capacities of Biochars Produced at Different Temperatures

Turkish Journal of Agriculture: Food Science and Technology
This study investigates the adsorption and desorption capacities of corn cob biochars produced at three different pyrolysis temperatures. Adsorption experiments were conducted using ammonium (NH4+) and nitrate (NO3-) solutions at concentrations 5, 10, 25,
Cabir Çağrı Gence, Halil Erdem
doaj   +1 more source

Nitrogen isotope discrimination in open-pollinated and hybrid canola suggests indirect selection for enhanced ammonium utilization

Frontiers in Plant Science, 2022
Nitrogen isotope discrimination (Δ15N) may have utility as an indicator of nitrogen use in plants. A simple Δ15N-based isotope mass balance (IMB) model has been proposed to provide estimates of efflux/influx (E/I) ratios across root plasma membranes, the
Yi Hu, Yi Hu, Robert D. Guy, Raju Y. Soolanayakanahally   +3 more
doaj   +1 more source