Results 31 to 40 of about 212,476 (167)

MALDI MSI and Raman Spectroscopy Application in the Analysis of the Structural Components and Flavonoids in Brassica napus Stem

Metabolites, 2023
Nod factors among the signaling molecules produced by rhizobia in response to flavonoids to induce root nodule formation in the legumes. It is, however, hypothesized that they might increase the yield and positively impact the growth of non-legumes.
Mikolaj Krysa, Katarzyna Susniak, Adrianna Kubas, Dominika Kidaj, Anna Sroka-Bartnicka   +4 more
doaj   +1 more source

Terahertz spectroscopic detection of amino acid molecules under magnetic field

Heliyon, 2022
Terahertz (THz) waves can cover the characteristic spectra of substances such as plasma, organisms, and biomolecules, whereas THz photons have low energy and do not damage biological tissues.
Ping Ye, Qinghao Meng, Guoyang Wang, Haiyun Huang, Yizhou Yang, Bo Su, Cunlin Zhang   +6 more
doaj   +1 more source

Explainable AI to Facilitate Understanding of Neural Network-Based Metabolite Profiling Using NMR Spectroscopy

Metabolites
Neural networks (NNs) are emerging as a rapid and scalable method for quantifying metabolites directly from nuclear magnetic resonance (NMR) spectra, but the nonlinear nature of NNs precludes understanding of how a model makes predictions.
Hayden Johnson, Aaryani Tipirneni-Sajja
doaj   +1 more source

Multiparameter Fluorescence Image Spectroscopy [PDF]

Biophysical Journal, 2011
In multiparameter fluorescence image spectroscopy (MFIS) simultaneously all information observable in a confocal fluorescence experiment is recorded photon by photon. Subsequent analysis of the primary fluorescence data (polarization, color, arrival time and spatial origin of the photons) enables e.g.
Kuehnemuth, Ralf, Hornen, Heike, Felekyan, Suren, Weidtkamp-Peters, Stefanie, Knust, Elisabeth, Seidel, Claus A.M.   +5 more
openaire   +1 more source

Quantitative macromolecular patterns in phytoplankton communities resolved at the taxonomical level by single-cell Synchrotron FTIR-spectroscopy

BMC Plant Biology, 2019
Background Technical limitations regarding bulk analysis of phytoplankton biomass limit our comprehension of carbon fluxes in natural populations and, therefore, of carbon, nutrients and energy cycling in aquatic ecosystems.
Andrea Fanesi, Heiko Wagner, Giovanni Birarda, Lisa Vaccari, Christian Wilhelm   +4 more
doaj   +1 more source

An Automated Non-Rigid Registration Method for Accurate Quantification of Dynamic Contrast Enhanced MR Imaging (DCE-MRI) in Complex Adnexal Masses Employing Residual Complexity Framework

Frontiers in Biomedical Technologies, 2016
Purpose: Quantification of dynamic contrast enhanced (DCE-) MRI of ovarian masses is susceptible to errors caused by motion artifacts and intensity inhomogeneity induced by bias fields.
Anahita Fathi Fathi Kazerooni, Mahnaz Nabil, Elaheh Kia, Mahrooz Malek, Hamidreza Saligheh Rad   +4 more
doaj  

Multivariate metal-organic frameworks enable chemical shift-encoded MRI with femtomolar sensitivity for biological systems

Nature Communications
Fluorescent molecules with specific target moieties are essential for histopathological analysis, but their limited tissue penetration depth makes in vivo, in situ color encoding analysis challenging.
Qingbin Zeng, Quer Yue, Ming Zhang, Rui Zhou, Zhen Wang, Zhongyu Xiao, Yaping Yuan, Xiuchao Zhao, Weiping Jiang, Lei Zhang, Yuqi Yang, Minghui Yang, Haidong Li, Louis-S. Bouchard, Qianni Guo, Xin Zhou   +15 more
doaj   +1 more source

Quantification of ASL Perfusion MRI in MCI Patients Using Single-Post Labeling Delay Model-Fitting Approach

Frontiers in Biomedical Technologies, 2019
Purpose: Neuroimaging techniques hold many promises to detect Alzheimer Disease (AD) at early stages before clinical symptoms fully develop, suggesting decreased regional Cerebral Blood Flow (CBF).
Fardin Samadi Khoshe Mehr, Soroor Kalantari, Jafar Zamani, Hanieh Mobarak Salari, Hamidreza Salighehrad   +4 more
doaj   +1 more source

Findings of DTI-p maps in comparison with T 2 /T 2 -FLAIR to assess postoperative hyper-signal abnormal regions in patients with glioblastoma

Cancer Imaging, 2018
Purpose The aim of this study was to compare diffusion tensor imaging (DTI) isotropic map (p-map) with current radiographically (T 2/T 2 -FLAIR) methods based on abnormal hyper-signal size and location of glioblastoma tumor using a semi-automatic ...
Manijeh Beigi, Mojtaba Safari, Ahmad Ameri, Mohsen Shojaee Moghadam, Azim Arbabi, Morteza Tabatabaeefar, Hamidreza SalighehRad   +6 more
doaj   +1 more source

Fusion of MALDI Spectrometric Imaging and Raman Spectroscopic Data for the Analysis of Biological Samples

Frontiers in Chemistry, 2018
Despite of a large number of imaging techniques for the characterization of biological samples, no universal one has been reported yet. In this work, a data fusion approach was investigated for combining Raman spectroscopic data with matrix-assisted ...
Oleg Ryabchykov, Oleg Ryabchykov, Juergen Popp, Juergen Popp, Thomas Bocklitz, Thomas Bocklitz   +5 more
doaj   +1 more source