Results 131 to 140 of about 5,226 (300)

Soil acidity and soil acidification - fundamental concepts and status for five Danish forest soils [PDF]

, 1991
Soil acidification is considered the process where protons are neutralized in the soil leading to a decrease in the amount of bases ("decrease in acid neutralization capacity'). Soil acidity is both an intensity term (proton activity in the soil solution)
Raulund-Rasmussen, K.
core  

Estimation of cation-exchange capacity in routine soil testing

Agricultural and Food Science, 1986
The efficiency of the soil testing method used in Finland for predicting the effective cation-exchange capacity was studied in a material of 430 topsoil samples.
Raina Niskanen, Antti Jaakkola
doaj  

ANION EXCHANGE CHROMATOGRAPHY OF ACIDS OF THE CITRIC ACID CYCLE

Journal of Biological Chemistry, 1952
H, BUSCH, R B, HURLBERT, V R, POTTER
openaire   +2 more sources

Large‐scale bidirectional arrayed genetic screens identify OXR1 and EMC4 as modifiers of αSynuclein aggregation

FEBS Open Bio, EarlyView.
Activation of the mitochondrial protein OXR1 increases pSyn129 αSynuclein aggregation by lowering ATP levels and altering mitochondrial membrane potential, particularly in response to MSA‐derived fibrils. In contrast, ablation of the ER protein EMC4 enhances autophagic flux and lysosomal clearance, broadly reducing α‐synuclein aggregates.
Sandesh Neupane, Lea Nikolić, Lorenzo Maraio, Thomas Goiran, Nathan Karpilovsky, Stefano Sellitto, Vangelis Bouris, Jiang‐An Yin, Ronald Melki, Edward A Fon, Adriano Aguzzi, Elena De Cecco   +11 more
wiley   +1 more source

Spatial Variability of Soil Acidity and Lime Requirements for Potato Cultivation in the Huánuco Highlands

Agriculture
Soil acidity is a major limiting factor for potato production in Peru’s high Andean region. This study aims to predict the spatial variability of soil acidity as a fundamental tool for recommending site-specific liming treatments and to identify the ...
Kenyi Quispe, Sharon Mejía, Carlos Carbajal, Lidiana Alejandro, Patricia Verástegui, Richard Solórzano   +5 more
doaj   +1 more source

Lewis Acid-Catalyzed Sulfur Fluoride Exchange

Organic Letters
A new method uses metal Lewis acids as catalysts to convert sulfonyl fluorides, fluorosulfates, and sulfamoyl fluorides with silyl amines into S-N bond-containing compounds via sulfur fluoride exchange. The reaction successfully employs Ca(NTf2)2 as a catalyst to form sulfonamides, sulfamates, and sulfamides using in situ-generated or commercially ...
Theodore D. Yassa, Yuxin Fang, Lana K. Ravelo, Sanah Anand, Saira Arora, Nicholas D. Ball   +5 more
openaire   +2 more sources

Suppression of lung adenocarcinoma migration through organelle alkalization by human lactoferrin – albumin fusion

FEBS Open Bio, EarlyView.
This paper reveals how human lactoferrin–albumin fusion (hLF‐HSA) potently suppresses lung adenocarcinoma cell migration. hLF‐HSA upregulates NHE7, leading to Golgi alkalization, disruption of the Golgi secretome, downregulation of MMP1, and reversal of EMT. These findings suggest a novel Golgi‐targeting strategy to suppress cancer cell migration.
Hana Nopia, Masahiro Kimura, Daisuke Kurimoto, Atsushi Sato   +3 more
wiley   +1 more source

SOME EFFECTS OF INTENSIVE IRRIGATED AGRICULTURE ON VALENTINE SOILS IN THE NEBRASKA SANDHILLS (ACIDITY) [PDF]

, 1986
Fertilization and irrigation of coarse textured soils has resulted in marked increases in soil acidity. Stable levels of organic matter seem to buffer the soil against adverse effects of acidity such as aluminum toxicity.
SPAUGH-BARBER, ELIZABETH ANNE
core  

Identifying transcription factors controlling the basal expression of human MRP4 highlights a substantial role for Sp1

FEBS Open Bio, EarlyView.
The MRP4 transporter exports several drugs and signaling molecules. Here, we identified key promoter elements regulating basal MRP4 expression. Using reporter assays, we defined a conserved region with essential Sp1 and contributory Ets sites, which controlled basal MRP4 expression.
Debora Singer, Angelique Kragl, Katrin Ziems, Juliane Glaubitz, Sophie Grammbauer, Susanne Hildebrandt, Mladen V. Tzvetkov, Gabriele Jedlitschky   +7 more
wiley   +1 more source

Refinement of amino‐acid conformation vs. difference density maps in time‐resolved serial femtosecond crystallography data analysis

FEBS Open Bio, EarlyView.
The dFoCC pipeline starts with observed DED and resting‐state coordinates, which are then used to generate a library of triggered states. Correlation analysis of the calculated DED features of each candidate vs observed DED permits quantitative evaluation of candidate structural quality.
Meng Iao Fong, Yuhei Hosokawa, Lars Oliver Essen, Manuel Maestre‐Reyna   +3 more
wiley   +1 more source