Results 71 to 80 of about 1,102,070 (346)

A synthetic benzoxazine dimer derivative targets c‐Myc to inhibit colorectal cancer progression

open access: yesMolecular Oncology, EarlyView.
Benzoxazine dimer derivatives bind to the bHLH‐LZ region of c‐Myc, disrupting c‐Myc/MAX complexes, which are evaluated from SAR analysis. This increases ubiquitination and reduces cellular c‐Myc. Impairing DNA repair mechanisms is shown through proteomic analysis.
Nicharat Sriratanasak   +8 more
wiley   +1 more source

The effect of simulated nitrogen deposition on soil chemical properties in maple plantation stand [PDF]

open access: yesعلوم محیطی, 2017
Introduction: The amount of nitrogen compounds released into the atmosphere has increased, and is higher in industrial areas due to the increasing usage of fossil fuels and chemical fertilizers (Gruber and Galloway, 2008).
Mehrcedeh Tafazoli   +3 more
doaj  

Soil mineral nitrogen and the rating of CaCl2 extractable nutrients

open access: yesPlant, Soil and Environment, 2017
It was assumed that the determination of the mineral nitrogen (Nmin) content in the 0.01 mol/L CaCl2 could rely on measurements of single form NO3--N, NH4+-N or both, and even including other extractable nutrients.
Remigiusz ŁUKOWIAK   +2 more
doaj   +1 more source

pH-Based Control Strategies for the Nitrification of High-Ammonium Wastewaters

open access: yesFermentation, 2021
Aquatic nitrogen pollution is one of the most urgent environmental issues requiring prevention and mitigation. Large quantities of high-ammonium wastewaters are generated by several industrial sectors, such as fertilizer and anaerobic-digestion plants ...
Ignatius Leopoldus van Rooyen   +2 more
doaj   +1 more source

NITROGEN CYCLING IN A FOREST STREAM DETERMINED BY A 15N TRACER ADDITION [PDF]

open access: yes, 2000
Nitrogen uptake and cycling was examined using a six‐week tracer addition of 15N‐labeled ammonium in early spring in Walker Branch, a first‐order deciduous forest stream in eastern Tennessee.
Meyer, Judy L.   +6 more
core   +1 more source

Pentazole and Ammonium Pentazolate: Crystalline Hydro-Nitrogens at High Pressure

open access: yes, 2017
Two new crystalline compounds, pentazole (N_{5}H) and ammonium pentazolate (NH_{4})(N_{5}), both featuring cyclo-{\rm N_{5}^{-}} are discovered using first principles evolutionary search of the nitrogen-rich portion of the hydro-nitrogen binary phase ...
Oleynik, Ivan I., Steele, Brad A.
core   +4 more sources

Adaptaquin is selectively toxic to glioma stem cells through disruption of iron and cholesterol metabolism

open access: yesMolecular Oncology, EarlyView.
Adaptaquin selectively kills glioma stem cells while sparing differentiated brain cells. Transcriptomic and proteomic analyses show Adaptaquin disrupts iron and cholesterol homeostasis, with iron chelation amplifying cytotoxicity via cholesterol depletion, mitochondrial dysfunction, and elevated reactive oxygen species.
Adrien M. Vaquié   +16 more
wiley   +1 more source

Combining PDMS Composite and Plasmonic Solid Chemosensors: Dual Determination of Ammonium and Hydrogen Sulfide as Biomarkers in a Saliva Single Test

open access: yesChemosensors
In recent years, in the field of bioanalysis, the use of saliva as a biological fluid for the determination of biomarkers has been proposed. Saliva analysis stands out for its simplicity and non-invasive sampling.
Belen Monforte-Gómez   +3 more
doaj   +1 more source

Rejected Sago Starch as a Coating Material to Mitigate Urea-Nitrogen Emission

open access: yesAgronomy, 2022
Urea–nitrogen is commonly lost through ammonia (NH3) volatilization, denitrification, and nitrate (NO3−) leaching. Rejected sago starch (RSS), which is a by-product of sago flour extraction, could be used to minimize NH3 volatilization from urea.
Rajan Kavitha   +4 more
doaj   +1 more source

Infiltration and short-term movement of nitrogen in a silt-loam soil typical of rice cultivation in Arkansas [PDF]

open access: yes, 2006
Rice production in Arkansas is one of the top three crop commodities in terms of cash receipts. Researchers and farmers report that nitrogen (N) needs to be managed according to a variety of factors with two important ones being soil and fertilizer type.
Brye, Kristofor R.   +5 more
core   +2 more sources

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