Article
Plant Sciences
Aleksandra Lj Mitrovic, Jasna Simonovic Radosavljevic, Milos Prokopijevic, Dragica Spasojevic, Jovana Kovacevic, Olivera Prodanovic, Bratislav Todorovic, Branko Matovic, Mira Stankovic, Vuk Maksimovic, Dragosav Mutavdzic, Milos Skocic, Mirjana Pesic, Ljiljana Prokic, Ksenija Radotic
Summary: The study revealed that both UV-B and UV-C radiation can induce multiple modifications in the structure of plant cell walls, including changes in relative content and chemical composition. These alterations in the cell walls help plants maintain physiological functions and are correlated with specific phenolic compounds.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Ferreol Berendt, Felipe de Miguel-Diez, Evelyn Wallor, Lubomir Blasko, Tobias Cremer
Summary: This study compares the estimation of bark volume from scaling formulae with the real bark volume obtained by xylometric technique. While the results showed good performances for the total volume estimation (including bark), the performances were much lower for the bark volume estimations only.
SCIENTIFIC REPORTS
(2021)
Article
Forestry
Min-Ha Kim, Thi Ngoc Anh Tran, Jin-Seong Cho, Eung-Jun Park, Hyoshin Lee, Dong-Gwan Kim, Seongbin Hwang, Jae-Heung Ko
Summary: This study analyzed the wood tissue of Pinus densiflora using RNA sequencing and PacBio single molecule real-time iso-sequencing to identify key genes involved in secondary wall biosynthesis. The research predicted NAC family transcription factors and showed that certain PdeNAC genes can activate SCW-specific cellulose synthase promoters and induce SCW deposition in xylem vessel cell-like structures in tobacco and Arabidopsis leaves. These findings lay the groundwork for further research on transcriptional regulation of wood formation in conifers, particularly focusing on SCW formation and tracheid differentiation.
Article
Materials Science, Multidisciplinary
Shuang Chen, Rui Liu, Yafang Lei, Jeffrey J. Morrell, Li Yan
Summary: Glycerol pretreatment can accelerate the thermal modification process, enhance wood properties, and reduce susceptibility to biological degradation.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Paper & Wood
Aman Gupta, Lalit Jain, Bhupender Dutt, Rajneesh Kumar, Sonika Sharma
Summary: This study investigates the thermal treatment of pine wood at different temperatures and durations. The treatment affects the specific gravity, moisture content, shrinkage, swelling, and strength of the wood.
Article
Materials Science, Paper & Wood
Danijela Petrovic, Vojislav Dukic Dukic, Zdravko Popovic, Nebojsa Todorovic
Summary: The study investigated the bending stress of Serbian spruce wood from natural stands, analyzing its mechanical properties in relation to annual ring width, proportion of late wood, wood density, as well as the relationship between modulus of elasticity and modulus of rupture.
Article
Engineering, Civil
Mitchell Gohnert, Ryan Bradley
Summary: This paper develops the membrane theory for a catenary dome with a linear variation in wall thickness and extends it to catenary domes with an oculus. The proposed theory is highly accurate, as confirmed by finite element analysis.
ENGINEERING STRUCTURES
(2022)
Article
Thermodynamics
Huiqiang Wang, Zhengyang Wang, Lijun Wen, Hongping Meng, Wei Wang, Xiaobing Huang
Summary: Wood species have a significant influence on the flame spread performance in building thermal insulation. Different wood types, such as beech, fir, pine, camphor and elm, were tested for mass loss rate, flame spread rate, total burning duration, and maximum flame characteristic length. The results show that wood with high moisture content and high solidity has a longer total burning duration. Softwoods with higher lignin content and lower hemicellulose can increase flame spread rate. Moisture content of wood also affects mass loss rate. Among the tested materials, fir wood exhibits excellent fire safety performance in historic wooden buildings.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Construction & Building Technology
Zhong-Hua Liu, Gan-Ping Shu, Ke-Rong Luo, Ying Qin
Summary: A new type of double-skin truss-reinforced composite wall (DSTCW) with steel truss as stiffeners was proposed to enhance the buckling capacity of double steel concrete composite wall (DSCW). Seven DSTCWs were loaded axially, with variations in steel truss joint spacing and rebar diameter. The effects of these variations on the axial load-displacement curve, ultimate strength, and failure mode were discussed. The results showed that the steel truss significantly improved the resistance to local buckling and enhanced the composite action between steel plate and concrete. The larger steel truss joint spacing reduced the ultimate bearing capacity of DSTCWs under axial compression, and the rebar effectively resisted the deformation of steel plates on both sides. Based on the test results, finite element (FE) models were established, and a parametric analysis was performed to determine the key parameters affecting the mechanical behavior of DSTCWs. A formula for predicting the axial load capacity of DSTCWs was proposed.
JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
(2023)
Article
Engineering, Civil
Zhihua Chen, Zhenyu Zi, Ting Zhou, Yapeng Wu
Summary: Double-steel-plate and concrete composite shear walls have high structural strength, good seismic performance, and convenient construction. However, as the wall height increases, the axial rigidity, ultimate bearing capacity, and material strength utilization efficiency decrease significantly.
Article
Construction & Building Technology
Jian Li, Teng Wang, Gang Gao, Yegang You, Xiaojing Li
Summary: This paper experimentally studied the axial compressive behavior of double-steel-plate composite shear wall (DSCW) with binding bars under different levels of corrosion. The results showed that corrosion negatively affects the axial compressive bearing capacity, initial stiffness, and ductility of DSCW. Finite element models were also used to investigate the behavior, and it was concluded that the strength grade of concrete and steel plates, concrete section area, steel plate thickness, and binding bars diameter and spacing significantly affect the axial compressive bearing capacity. A formula was proposed to calculate the bearing capacity of corroded DSCW, which was validated by the experimental results.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Physics, Applied
Babak Minaie, Tayebeh Movlarooy
Summary: The structural, stability, and electronic properties of double-walled boron nitride nanotubes (DWBNNTs) with different chiralities were investigated using density functional theory (DFT). The results showed that (m,m)@(m + 6,m + 6) and (m, 0)@(m + 9, 0) DWBNNTs with inter-layer spacing of about 4.22 Å and 3.62 Å were the most favorable nanotubes. The analysis of electronic structures revealed that all considered DWBNNTs were semiconductors, and increasing tube diameters and inter-wall distances led to a larger band gap.
MODERN PHYSICS LETTERS B
(2023)
Article
Engineering, Civil
Ashish Kumar Mishra, Hrushikesh Chavan, Arvind Kumar
Summary: The study focused on designing TPMS lattice structures using an in-house opensource tool and additively manufacturing them through LPBF, followed by compression testing and mechanical property analysis. The results indicated that the mechanical properties of lattice structures were influenced by cell size and cell wall thickness.
THIN-WALLED STRUCTURES
(2023)
Article
Engineering, Civil
Ji Zhou, Zongping Chen, Haoyu Liao, Jiyu Tang
Summary: This paper presents the seismic behavior of corrugated double-skin composite wall (DSCW) with concrete-filled steel tube boundary elements. The results show that the vertical corrugated DSCW performs better than the horizontal corrugated DSCW in cyclic loading, with higher peak load, ductility ratio and energy dissipation. The setting of connectors slows down the damage rate and improves the peak load and ductility of the corrugated DSCW. Increasing the shear span ratio reduces the peak load and initial stiffness of the DSCW, but does not affect the ductility and energy dissipation. The corrugated DSCW has excellent collapse resistance, exceeding 2% drift ratio and 3.3 ductility ratio.
ENGINEERING STRUCTURES
(2022)
Article
Materials Science, Textiles
Lihong Xu, Can Ni, Gang Liu, Junli Li
Summary: Sandwich structure is widely used in aviation field for their excellent mechanical properties. This study investigates the influence of double cell wall on the compressive properties of sandwich structure and analyzes the failure process from micro perspective. Finite element models are established in ABAQUS and verified by experiments. The results show that the failure mode of sandwich structure is different from that of aluminum honeycomb alone, and the double cell wall experiences both compressive and tensile stresses.
FIBERS AND POLYMERS
(2023)
Article
Environmental Sciences
Joanna Zakrzewska, Aleksandra Lj Mitrovic, Dragosav Mutavdzic, Tanja Ducic, Ksenija Radotic
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Article
Plant Sciences
Gergely Nagy, Gyozo Garab
Summary: The organization and flexibility of thylakoid membranes play a key role in the photosynthetic performance of crop plants, with regulatory mechanisms affecting membrane organization. Non-invasive techniques like SANS reveal rapid and reversible reorganizations, providing valuable insights into the structural dynamics of photosynthesis.
PHOTOSYNTHESIS RESEARCH
(2021)
Article
Biochemistry & Molecular Biology
Renata Unnep, Suman Paul, Otto Zsiros, Laszlo Kovacs, Noemi K. Szekely, Gabor Steinbach, Marie-Sousai Appavou, Lionel Porcar, Alfred R. Holzwarth, Gyozo Garab, Gergely Nagy
Article
Biology
Radek Kana, Gabor Steinbach, Roman Sobotka, Gyorgy Vamosi, Josef Komenda
Summary: The study revealed that unbound proteins in cyanobacterial thylakoid membranes can diffuse very fast, comparable to free lipids. This highlights the crucial role of protein-protein interactions in restricting the mobility of large thylakoid protein complexes.
Article
Plant Sciences
Aleksandra Lj Mitrovic, Jasna Simonovic Radosavljevic, Milos Prokopijevic, Dragica Spasojevic, Jovana Kovacevic, Olivera Prodanovic, Bratislav Todorovic, Branko Matovic, Mira Stankovic, Vuk Maksimovic, Dragosav Mutavdzic, Milos Skocic, Mirjana Pesic, Ljiljana Prokic, Ksenija Radotic
Summary: The study revealed that both UV-B and UV-C radiation can induce multiple modifications in the structure of plant cell walls, including changes in relative content and chemical composition. These alterations in the cell walls help plants maintain physiological functions and are correlated with specific phenolic compounds.
PLANT PHYSIOLOGY AND BIOCHEMISTRY
(2021)
Article
Biochemistry & Molecular Biology
Agnes Cseplo, Laura Zsigmond, Norbert Andrasi, Abu Imran Baba, Nitin M. Labhane, Andrea Peto, Zsuzsanna Kolbert, Hajnalka E. Kovacs, Gabor Steinbach, Laszlo Szabados, Attila Feher, Gabor Rigo
Summary: The study reveals that Arabidopsis AtCRK5 protein kinase is involved in establishing the auxin gradient at root tips, and the delayed gravitropic response in the Atcrk5-1 mutant is associated with oxidative stress and nitric oxide levels. Treatment with oxidative stress inducers or H2O2 can partially restore proper auxin distribution.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Review
Biochemistry & Molecular Biology
Jasna Simonovic Radosavljevic, Aleksandra Lj Mitrovic, Ksenija Radotic, Laszlo Zimanyi, Gyozo Garab, Gabor Steinbach
Summary: Modern light microscopy imaging techniques have significantly advanced our understanding of the ultrastructure of plant cells and their organelles, and also enabled the combination of microscopy imaging with spectroscopic measurements. Differential polarization imaging techniques have provided unique and quantitative information on the anisotropic molecular organization of plant cell constituents, particularly on plant cell walls and chloroplasts.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Forestry
Milos Prokopijevic, Jasna Simonovic Radosavljevic, Dragica Spasojevic, Katarina Vojisavljevic, Ksenija Radotic, Aleksandra Lj Mitrovic
Summary: Leaning stems of woody plants form reaction wood called tension wood (TW), which has special fiber structure. Xyloglucan endotransglycosylases (XETs) play a key role in cell wall modifications in TW, and the colorimetric assay can be used for fast detection of TW presence.
Article
Chemistry, Physical
Parveen Akhtar, Gabor Sipka, Wenhui Han, Xingyue Li, Guangye Han, Jian-Ren Shen, Gyozo Garab, Howe-Siang Tan, Petar H. Lambrev
Summary: This study investigates the excitation dynamics of Photosystem II (PSII) under neutral and oxidized reaction center (RC) conditions using femtosecond transient absorption spectroscopy. The core antenna equilibration process has a lifetime of about 300 fs, regardless of the RC redox state. Additionally, slower energy equilibration is observed on timescales of 3-5 ps. PSII with neutral RC follows previously proposed models, while PSII with oxidized RC exhibits extremely fast excitation quenching.
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Cell Biology
Haoyu Wang, Hao Qin, Gyozo Garab, Edward S. Gasanoff
Summary: Short-chain alcohols interact with membrane-active peptides to modulate the lipid polymorphism of membranes, thereby affecting cellular metabolism.
Article
Cell Biology
Ondrej Dlouhy, Vaclav Karlicky, Uros Javornik, Irena Kurasova, Otto Zsiros, Primoz Sket, Sai Divya Kanna, Kinga Bode, Kristyna Vecerova, Otmar Urban, Edward S. Gasanoff, Janez Plavec, Vladimir Spunda, Bettina Ughy, Gyozo Garab
Summary: Plant thylakoid membranes (TMs) contain two isotropic lipid phases and an inverted hexagonal phase. The non-bilayer lipid phases are found in subdomains separated from but interconnected with the bilayer accommodating the main components of the photosynthetic machinery, potentially involved in membrane fusion.
Article
Biochemistry & Molecular Biology
Melinda Magyar, Gabor Sipka, Wenhui Han, Xingyue Li, Guangye Han, Jian-Ren Shen, Petar H. H. Lambrev, Gyozo Garab
Summary: By measuring the chlorophyll-a fluorescence transients produced by single-turnover saturating flashes, researchers identified the rate-limiting steps in the transition from dark to light of Photosystem II. They found that in samples treated with diuron, the first flash fully reduced the Q(A) quinone acceptor molecule but only generated an F-1 fluorescence transient.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Review
Biochemistry & Molecular Biology
G. Sipka, L. Nagy, M. Magyar, P. Akhtar, J. -r. Shen, A. R. Holzwarth, P. H. Lambrev, G. Garab
Summary: This review outlines the nature, mechanism, and physiological significance of light-induced reversible reorganizations in closed Type II reaction center complexes. Closed reaction center complexes display changes in their photophysical and photochemical parameters upon continued excitation, leading to the optimization of photosynthetic machinery during the dark-to-light transition.
Review
Plant Sciences
Gyozo Garab, Melinda Magyar, Gabor Sipka, Petar H. Lambrev
Summary: Photosystem II (PSII) utilizes solar energy to oxidize water and fix CO2. While the atomic structure and basic functions of PSII are well-known, there are still important questions to be answered. The activity of PSII is monitored by recording the induction kinetics of chlorophyll a fluorescence (ChlF). However, the existing model is controversial.
JOURNAL OF EXPERIMENTAL BOTANY
(2023)