Results 101 to 110 of about 11,656,595 (311)

Total Organic Carbon and Total Nitrogen in Sediments and Soils: A Comparison of the Wet Oxidation - Titration Method with the Combustion-Infrared Method

, 2015
Total organic carbon (TOC) and total nitrogen (TN) are the most important components of sediments and soils as they can be used to distinguish marine and terrestrial sources of organic matter, environmental depositional conditions, pollution indices and ...
P. Avramidis, K. Nikolaou, V. Bekiari
semanticscholar   +1 more source

ALDOA Promotes Glycolysis and NLRP3/GSDMD Pyroptosis to Accelerate ALS Progression

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Amyotrophic lateral sclerosis (ALS) is characterized by progressive motor neuron degeneration. Glycolytic dysregulation is implicated in disease progression, yet the underlying mechanisms remain unclear. This study investigates how Aldolase A (ALDOA) drives ALS progression through glycolysis‐mediated motor neuron pyroptosis.
Kaixin Yan, Yan Jiang, Yuxuan Yong, Tianshuo Zhang, Niannian Zhang, Qianqian Zeng, Xue Gong, Li Meng, Fangfang Bi, Yongmin Liu   +9 more
wiley   +1 more source

Estimating the stocks and uncertainty of seasonally-thawed soil organic carbon and nitrogen overlying permafrost in the Arctic foothills of Alaska

Arctic Science
The vast amounts of organic carbon (C) and nitrogen (N) in permafrost landscapes strongly influence climate warming because once thawed they can be released as greenhouse gases.
Yue Wu, Jingyi Chen, Nicolas A. Jelinski, Michael O'Connor, George W. Kling, M. Bayani Cardenas   +5 more
doaj   +1 more source

A New Method for the Determination of Total Nitrogen in Urine

The American Journal of the Medical Sciences, 1912
No one analytical method has done so much to further metabolism investigations as Kjeldahl’s method for the determination of total nitrogen. While applicable to all kinds of nitrogenous products of interest to the biochemist it has proved particularly serviceable in urine analysis. In its modern modifications it is one of the most rapid, convenient and
Otto Folin, Chester J. Farmer
openaire   +1 more source

Neurochemical Endpoints to Inform Early‐Stage Trials of Spinocerebellar Ataxia 2 and 3 in a Multisite Setting

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Neurochemical levels measured by brain MR spectroscopy (MRS) have been proposed as endpoints for clinical trials in early‐stage spinocerebellar ataxia (SCA) trials. We tested their trial‐readiness by quantifying neurochemicals in three affected brain regions in early‐stage cohorts of SCA2 and SCA3, examining their reproducibility in ...
James M. Joers, Yaqiao Wei, Dinesh K. Deelchand, Adam Berrington, Young Woo Park, Guita Banan, Michal Povazan, Jens T. Rosenberg, André J. W. van der Kouwe, Tetsuo Ashizawa, Khalaf O. Bushara, Chiadi U. Onyike, Sub H. Subramony, Jeremy D. Schmahmann, Brian J. Soher, Peter B. Barker, Thomas H. Mareci, Eva‐Maria Ratai, Lynn E. Eberly, Gülin Öz   +19 more
wiley   +1 more source

Ammonium to total nitrogen ratio affects the purslane (Portulaca oleracea L.) growth, nutritional, and antioxidant status. [PDF]

Heliyon, 2023
Chrysargyris A, Hajisolomou E, Xylia P, Tzortzakis N.   +3 more
europepmc   +1 more source

β‐Catenin/c‐Myc Axis Modulates Autophagy Response to Different Ammonia Concentrations

Advanced Biology, Volume 9, Issue 3, March 2025.
Ammonia, detoxified by the liver into urea and glutamine, impacts autophagy differently at varying levels. Low ammonia activates autophagy via c‐Myc and β‐catenin, while high levels suppress it. Using Huh7 cells and Spf‐ash mice, c‐Myc's role in cytoprotective autophagy is revealed, offering insights into hyperammonemia and potential therapeutic ...
S. Sergio, B. Spedicato, G. Corallo, A. Inguscio, M. Greco, D. Musarò, D. Vergara, A. F. Muro, G. De Sabbata, L. R. Soria, N. Brunetti Pierri, M. Maffia   +11 more
wiley   +1 more source

The estimation of protein equivalents of total nitrogen in Chinese CAPD patients: an explanatory study. [PDF]

Ren Fail, 2022
Su C, Wang T, Wang P, Lu X, Tang W.
europepmc   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Carbon, nitrogen and phosphorus contents and their ecological stoichiometric characteristics in leaf litter from the Jianfengling Tropical Montane Rainforest

Frontiers in Plant Science
Investigating carbon (C), nitrogen (N) and phosphorus (P) contents and ecological stoichiometric characteristics in leaf litter from tropical rainforests is crucial for elucidating nutrient cycling and energy flow in forest ecosystems.
Shuxuan Yin
doaj   +1 more source