Results 61 to 70 of about 193,200 (241)

Prediction of soil fertility parameters using USB-microscope imagery and portable X-ray fluorescence spectrometry [PDF]

Soil Advances, Volume 2, 2024, 100016
This study investigated the use of portable X-ray fluorescence (PXRF) spectrometry and soil image analysis for rapid soil fertility assessment, with a focus on key indicators such as available boron (B), organic carbon (OC), available manganese (Mn), available sulfur (S), and the sulfur availability index (SAI).
arxiv   +1 more source

The TRAPSENSOR Facility: an Open-Ring 7-Tesla Penning Trap for Laser-Based Precision Experiments [PDF]

, 2018
The Penning-trap electronic-detection technique that offers the precision and sensitivity requested in mass spectrometry for fundamental studies in nuclear and particle physics has not been proven yet to be universal. This has motivated the construction of a Penning-trap facility aiming at the implementation of a novel detection method, consisting in ...
arxiv   +1 more source

Acacetin reduces endoplasmic reticulum stress through the P‐eNOS/PERK signaling pathway to attenuate MGO‐induced vascular endothelial cell dysfunction

FEBS Open Bio, EarlyView.
We investigated a potential protective effect of acacetin, a naturally occurring flavonoid, against methylglyoxal (MGO)‐induced endothelial dysfunction in human umbilical vein endothelial cells and its mechanism of action. Acacetin can could inhibit MGO‐induced intracellular calcium ion influx, enhance the expression levels of phosphorylated ...
Zhen Zhang, Kaien Hu, Zhaohui Fang, Sihai Wang, Jie Chen, Dengke Yin, Caiyun Zhang, Gefei Ma   +7 more
wiley   +1 more source

Comparison of liquid chromatography with fluorescence detection to liquid chromatography-mass spectrometry for amino acid analysis with derivatisation by 6-aminoquinolyl-N-hydroxysuccinimidyl-carbamate: Applications for analysis of amino acids in skin

Arabian Journal of Chemistry, 2020
The analysis of nineteen amino acids found in collagen was optimised using 6-aminoquinolyl-N-hydroxysuccinimidyl-carbamate (AQC) as a derivatisation reagent.
Rafea Naffa, Geoff Holmes, Wenkai Zhang, Catherine Maidment, Ihsan Shehadi, Gillian Norris   +5 more
doaj  

Application Skills on Determination of Geological Sample by X-ray Fluorescence Spectrometry

Yankuang ceshi, 2015
X-ray Fluorescence Spectrometry (XRF) has such advantages as simple sample preparation, green environmental protection and the simultaneous determination of multiple elements and is widely used in the exploration geochemistry analysis field.
CHEN Jing, GAO Zhi-jun, CHEN Chong-ke, LIU Yan-xia, ZHANG Ming-wei   +4 more
doaj   +1 more source

Trace element distribution in human teeth by x-ray fluorescence spectrometry and multivariate statistical analysis [PDF]

arXiv, 2014
X-ray fluorescence spectrometry (XRFS) was used as a multielement method of evaluation of individual whole human tooth or tooth tissues for their amounts of trace elements. Measurements were carried out on human enamel, dentine, and dental cementum, and some differences in tooth matrix composition were noted.
arxiv  

Enhancing transporter activity in heterologous expression systems with SAHA: a 2500‐times more potent and odorless alternative to butyrate

FEBS Open Bio, EarlyView.
Heterologous expression of membrane transporters in cultured cells is essential for functional characterization, but is sometimes limited by low activity. Our study compares the HDAC inhibitors butyrate, VPA and SAHA to enhance transport activity. We propose to replace butyrate by SAHA: it is equally effective, devoid of repulsive odor, costs less, and
Svenja Flögel, Maurice Tust, Samira Boussettaoui, Dietmar Fischer, Dirk Gründemann   +4 more
wiley   +1 more source

Study of Araucaria angustifolia nuts by Gamma Spectrometry and X-Ray Fluorescence

Revista de la Sociedad Científica del Paraguay, 2019
The seed of Araucaria angustifolia is largely produced and consumed in Parana state, Brazil. It has an estimated annual consumption of approximately 0.167 kg per capita. The samples of seeds were acquired in 8 different commercial points of Londrina city
Edher Zacarías Herrera, Avacir Casanova Andrello, Carlos Roberto Appoloni   +2 more
doaj   +1 more source

The C(3P) + NH3 reaction in interstellar chemistry: I. Investigation of the product formation channels [PDF]

, 2016
The product formation channels of ground state carbon atoms, C(3P), reacting with ammonia, NH3, have been investigated using two complementary experiments and electronic structure calculations. Reaction products are detected in a gas flow tube experiment (330 K, 4 Torr) using tunable VUV photoionization coupled with time of flight mass spectrometry ...
arxiv   +1 more source

METTL3 knockout accelerates hepatocarcinogenesis via inhibiting endoplasmic reticulum stress response

FEBS Open Bio, EarlyView.
Liver‐specific knockout of N6‐methyladenosine (m6A) methyltransferase METTL3 significantly accelerated hepatic tumor initiation under various oncogenic challenges, contrary to the previously reported oncogenic role of METTL3 in liver cancer cell lines or xenograft models. Mechanistically, METTL3 deficiency reduced m6A deposition on Manf transcripts and
Bo Cui, Silin Tu, Haibo Li, Zhancheng Zeng, Ruiqi Xiao, Jing Guo, Xiaoqi Liang, Chang Liu, Lijie Pan, Wenjie Chen, Mian Ge, Xiaofen Zhong, Linsen Ye, Huaxin Chen, Qi Zhang, Yan Xu   +15 more
wiley   +1 more source