Article
Plant Sciences
Shiqin Zheng, Ruiqi Chen, Zhe Wang, Juan Liu, Yan Cai, Minghui Peng, Tian Zhang, Yunxi Li, Baohua Wang, Jiandong Bao, Dongmei Zhang, Zonghua Wang, Hongli Hu
Summary: This study successfully generated a high-quality genome assembly of the pathogenic fungus Pseudopestalotiopsis theae strain CYF27 using PacBio long-read and Illumina short-read sequencing technologies, identifying a large number of gene models and putative secreted proteins. This resource will be valuable for studying fungal infection mechanisms and pathogen-host interaction.
Article
Biotechnology & Applied Microbiology
Manjukarunambika Kolandasamy, Abul Kalam Azad Mandal, Mythili Gnanamangai Balasubramanian, Ponmurugan Ponnusamy
Summary: Phomopsis canker is a destructive stem disease in tea plants caused by the fungal pathogen Phomopsis theae. Twelve isolates of Pseudomonas fluorescens, Bacillus subtilis, Streptomyces griseus, and Trichoderma viride showed multiple plant growth-promoting traits and antifungal activity. Specifically, P. fluorescens VPF5 and B. subtilis VBS3 exhibited the highest plant growth-promoting activities, while VBS3 and VTV7 strains showed superior biocontrol efficacy against P. theae. These isolates also produced hydrolytic enzymes and antifungal secondary metabolites that contribute to disease suppression. Further studies are needed to confirm the efficacy of these beneficial microbes in tea cultivation.
WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
(2023)
Article
Multidisciplinary Sciences
J. Niskanen, A. Vladyka, J. Niemi, C. J. Sahle
Summary: In this study, we explore the sensitivity of several core-level spectroscopic methods to the atomistic structure using water molecule as a test system. We define a metric to measure the magnitude of spectral change as a function of structure, which enables us to identify structural regions with high spectral sensitivity. By employing machine-learning emulator-based decomposition of structural parameter space, we are able to recover more spectral variance and identify spectroscopically dominant degrees of freedom.
ROYAL SOCIETY OPEN SCIENCE
(2022)
Article
Chemistry, Applied
Ruiyu Zhu, Zhen Chen, Helin Lv, Yani Pan, Xinyu Feng, Guicai Chen, Weilian Hu, Tianhua Xu, Fangyuan Fan, Shuying Gong, Ping Chen, Qiang Chu
Summary: By studying the relationship between the characteristics of nanoparticles in tea infusion and aging time, it was found that the size of white tea nanoparticles decreased gradually with the increase of aging time, and the surface structure of the nanoparticles also changed. In vitro modeling further demonstrated a strong correlation between nanoparticle size and protein and tea polyphenol content, and this correlation was further verified in aged Pu'er raw tea. This study offers a unique way to determine the aging period of white tea based on the properties of its nanoparticles.
Article
Materials Science, Multidisciplinary
Christoph Emeis, Sanjoy Kr Mahatha, Sebastian Rohlf, Kai Rossnagel, Fabio Caruso
Summary: This study combines ab initio calculations and ARPES to investigate the electron-plasmon interaction in highly doped semiconducting 1T-HfS2. Experimental results reveal the emergence of satellite spectral features near quasiparticle excitations, indicating coupling to bosonic excitations. First-principles calculations demonstrate that these features can be attributed to electronic coupling to carrier plasmons. Additionally, reduced screening at the surface enhances the electron-plasmon interaction and leads to the formation of plasmonic polarons.
Article
Chemistry, Physical
Minal Gupta, Anil Kumar, Archna Sagdeo, Pankaj R. Sagdeo
Summary: The study found that La doping gradually increases the lattice parameter and Ce/La-O bond length of CeO2, leading to changes in the crystallographic structure. Raman spectroscopy results showed red-shift, peak broadening, and an antiresonance dip in the Raman line-shape (F-2g), which may be due to electron-phonon-coupling-induced Fano scattering and phonon confinement effects.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Radiology, Nuclear Medicine & Medical Imaging
Gavin Poludniowski, Artur Omar, Robert Bujila, Pedro Andreo
Summary: SpekPy v2 can reliably predict on- and off-axis spectra for tungsten and molybdenum targets, and its open-source MIT license allows users the freedom to incorporate this powerful toolkit into their own projects.
Article
Plant Sciences
Karthik Natesan, Ponnusamy Ponmurugan, Balasubramanian Mythili Gnanamangai, Venkatesan Manigandan, Sebastian Prakash Joseph Joy, Chinnappan Jayakumar, Govindasamy Amsaveni
Summary: Tea diseases have been a major concern recently, and this study focused on using indigenous biocontrol agents to synthesize copper and silica nanoparticles for managing root and stem diseases in tea plantations. Results showed that nanocopper and nanosilica inhibited the growth of diseases, and were non-toxic to zebrafish.
ARCHIVES OF PHYTOPATHOLOGY AND PLANT PROTECTION
(2021)
Article
Chemistry, Multidisciplinary
Abdolhossein Sa'aedi, Alaa Ahmed Akl, Ahmed Saeed Hassanien
Summary: This article describes the synthesis and characterization of pure ZnO and Rb-doped ZnO nanoparticles using sol-gel technology. The samples were analyzed using X-ray diffraction, energy-dispersive X-ray spectroscopy, and field-emission scanning electron microscopy. The results showed that RbxZn1-xO NPs have a hexagonal wurtzite structure and their properties change with the Rb concentration. The particle size of the NPs decreased with increasing Rb concentration, and the compositions were in agreement with the selected elements.
Article
Multidisciplinary Sciences
Horst Rottke, Robin Y. Engel, Daniel Schick, Jan O. Schunck, Piter S. Miedema, Martin C. Borchert, Marion Kuhlmann, Nagitha Ekanayake, Siarhei Dziarzhytski, Gunter Brenner, Ulrich Eichmann, Clemens von Korff Schmising, Martin Beye, Stefan Eisebitt
Summary: Extending nonlinear spectroscopic techniques into the x-ray domain allows for unique insights into photoexcited charge dynamics. We have observed a third-order nonlinear process in lithium fluoride (LiF) and found that resonant four-wave mixing (FWM) can be used as a sensitive probe for charge localization.
Article
Computer Science, Interdisciplinary Applications
Simon Welker, Muhamed Amin, Jochen Kuepper
Summary: CMInject is a simulation tool designed for nanoparticle injection experiments, focusing on modeling different forces acting on particles and providing specific force models such as fluid drag forces, Brownian motion, and photophoretic forces. The framework is aimed at providing a reliable and reproducible simulation platform for experimental injection pipelines of biological and artificial nanoparticles to advance the field of single-particle imaging.
COMPUTER PHYSICS COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Dorothea Golze, Markus Hirvensalo, Patricia Hernandez-Leon, Anja Aarva, Jarkko Etula, Toma Susi, Patrick Rinke, Tomi Laurila, Miguel A. Caro
Summary: We present a quantitatively accurate machine-learning model that can predict core-electron binding energies and obtain X-ray photoelectron spectroscopy spectra. The model combines density functional theory with GW and utilizes kernel ridge regression for machine learning predictions. We applied this new approach to disordered materials and small molecules containing carbon, hydrogen, and oxygen, achieving qualitative and quantitative agreement with experimental results, resolving spectral features within 0.1 eV of reference experimental spectra. The method only requires users to provide a structural model for the material under study to obtain XPS predictions within seconds. Our new tool is freely available online through the XPS Prediction Server.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Maxim K. Rabchinskii, Svyatoslav D. Saveliev, Dina Yu. Stolyarova, Maria Brzhezinskaya, Demid A. Kirilenko, Marina Baidakova, Sergei A. Ryzhkov, Vladimir V. Shnitov, Victor V. Sysoev, Pavel N. Brunkov
Summary: This study demonstrates the modulation of N species by tailoring the functionalization and atomic structure of graphene derivatives prior to chemical N-doping. Thermal annealing at moderate temperatures was shown to readjust the composition of N-species in graphene derivatives regardless of their chemistry, nanostructure, and the initial distribution of the N-species. The oxidation of the graphene layer governs the manifestation of pi* resonances and configuration of sigma* resonance.
Article
Multidisciplinary Sciences
Tomy Cherian, Fereshteh Sohrabi, Carlo Rigoni, Olli Ikkala, Jaakko V. Timonen
Summary: It has been recognized that driving matter to nonequilibrium states can lead to emergent behaviors and functionalities. By experimentally driving colloidal dispersions into dissipative nonuniform states with emerging behaviors, novel nonequilibrium magnetism can be achieved, including voltage-controlled magnetization and susceptibility, along with novel dissipative patterns. This concept can be generalized to create various functional responses in other colloids beyond voltage-controlled magnetism.
Article
Chemistry, Physical
Anton Vladyka, Christoph J. J. Sahle, Johannes Niskanen
Summary: We demonstrate that machine learning can be used to predict statistical properties of Ge K-edge X-ray emission spectra for amorphous GeO2 at elevated pressures. By reducing the dimensionality of the spectra and mapping them to pseudo-Coulomb matrices, we are able to accurately determine distances from the active site and reproduce pressure-induced coordination changes. Our approach filters out artificial structural information and allows for quantitative analysis of structural changes inferred solely from changes in the K beta emission spectrum.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)