BioResources (E-Journal)
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Comparison of Scotch Pine (Pinus sylvestris L.) Origins in terms of Photosynthetic Gas Exchange and Chemical Properties
No full textThis study was conducted to address the urgent need for identifying drought-tolerant varieties of Pinus sylvestris L. (Scotch pine) in response to the increasing impact of global climate change on forest ecosystems. The aim was to evaluate the physiological and biochemical responses of Scotch pine provenances grown in the Lakes Region of Türkiye in terms of photosynthetic gas exchange and selected stress-related chemical traits. Samples from different origins were analyzed to assess parameters such as adaptation to drought stress, water use efficiency, stomatal conductance, and photosynthesis rate. The data, obtained from long-term provenance trials established in 2000 in Aydoğmuş (Isparta) and Kemer (Burdur), revealed how these traits vary depending on origin and site conditions. Among the provenances, Çatacık, Akyazı, and Mesudiye displayed higher photosynthesis rates, stomatal conductance, and transpiration. Additionally, the accumulation of proline and hydrogen peroxide appeared to play a key role in drought adaptation, with Çatacık and Akyazı showing better performance under arid conditions. The findings provide valuable insights for selecting appropriate Scotch pine provenances for afforestation in arid and semiarid environments and contribute to the development of climate-resilient forest management strategies
Carbon-Enhanced Photocatalysts with Dopamine Electronic Bridge Enriched in Adjustable Adsorption and Visible-Light Degradation for Multitasking Water Remediation
No full textThe integrated strategy using coupling photocatalysis and adsorption to treat liquid waste has attracted increased attention. In this work, a carbon enhanced photocatalyst (BiOBr@PSBM) with dopamine bridge was constructed using porous straw biochar (SBM) as loading carrier for efficient, multitasking water purification engineering, enhancing adjustable adsorption and visible-light degradation. A cellulose-targeted etching strategy was used to construct porous biochar carriers. Benefiting from the synergy of dopamine and carbon enhancement, the electron migration ability of composites enabled the heightened visible-light catalysis activities, and the efficient visible-light degradation (96.5%) for various dye pollutants was achieved. The optimized porous structure, amino-rich surface, and pH control adjustable surface charge properties endowed composites with multitasking ability. They achieved excellent and rapid capture Cr(VI) through static-dynamic adsorption (157.7 mg·g-1, 40 min). The theoretical calculation with DFT framework was used to study the proposed adsorption-degradation mechanism and the degradation pathway of organic polluted molecules. Significantly, multiple recycling and environmental experiments indicated that photocatalysts boasted stable structure and regeneration, supporting their cost-effective and efficient remediation of wastewater containing various polluted species. This work provided a feasible strategy for developing advanced water purification materials by the utilization of low-value solid-waste
Effects of Hydrothermal-Chemical Treatments on Bending Performance and Physical-Mechanical Properties of Four Timber Species
No full textThe bending behavior of four key timber species (Fraxinus chinensis, teak, rubberwood, and Pinus yunnanensis) was evaluated under hydrothermal-chemical treatments. Controlled experiments at varying moisture contents (20 to 60%), temperatures (100 to 140 °C), and treatment durations (4 to 8 h) revealed that bending strength and elastic modulus decreased by 18 to 32% with increased moisture and temperature, stabilizing beyond critical thresholds (40% moisture, 120 °C). Among the treatments, the compound lye (40% ammonia + 5% ethylenediamine with surfactants) outperformed ammonia and water treatments, achieving the highest bending deformation height-to-radius ratio of 0.102. X-ray diffraction and Fourier-transform infrared spectroscopy analyses confirmed selective lignin degradation and reduced inter-fiber friction. These findings suggest that this method offers a promising, cost-effective approach for improving the structural integrity of curved wood components
Hemicellulose-derived Xylan and Its Nanocrystal as Novel Polysaccharides to Tune Micro-phase Separated Block Copolymers for Advanced Applications
No full textSelf-assembled block copolymers (BCPs) with micro-phase separated structures have attracted attention due to their potential applications as lithography material in the semiconductor industry and a soft template in the design of precisely ordered pore materials. The primary questions to be addressed include whether forestry bio-material xylan makes it possible to tune micro-phase separation window of BCP along with high Flory-Huggins’s parameter BCP design. Additionally, xylan nanocrystals (XNCs) have potential to further tune micro-phase separation of BCP due to their unique rod- or platelet-like shape and high crystallization. The follow-up question to be addressed is how to design XNC-BCP hybrid nanocomposites with ordered nanostructure that work as a soft template to establish precisely organized pores in energy-material applications. The studies of xylan and XNC tailoring micro-phase separation of BCP open an avenue for its advanced applications
Identifying the Factors Affecting Production Growth in Wooden Furniture Industry in the Post-Corona Era in Iran
No full textThis research aimed to provide a comprehensive model to identify the factors that affect growth in production within the wooden furniture industry in the post-corona era. A mixed research method was used, gathering both quantitative and qualitative data. The statistical population consisted of experts and academics, with the effective factors being explored through interviews. In the qualitative section, through thematic analysis and the use of MAXQDA software, 10 themes were identified after 10 interviews. To determine the final indicators, a researcher-made questionnaire was distributed to five experts, resulting in the presentation of the conceptual model. In the quantitative section, 120 individuals were selected (112 responded). The questionnaire, including the final indicators, was then distributed to them. In this section, the SEM method and Smart-Pls software were used for factor analysis. The results indicated that factors such as the political environment, supply chain, and improvement of the business climate had the greatest impact on production growth. A significant relationship was found between factors influencing technological developments, productivity, procedural modifications, monetary policies, financial policies, rules and regulations, political environment, administrative bureaucracy, improvement of the business climate, supply chain, and production growth in the wooden furniture industry in Iran during the post-corona era
Extraction Variables Optimization on Phenolics Content and Antioxidant Activities of in-vitro Propagated Leaves of Curcuma caesia Roxb. using Response Surface Methodology
No full textCurcuma caesia Roxb. (Zingiberaceae) is one of the endangered species in the genus Curcuma that possesses numerous beneficial bioactive compounds that are responsible for various pharmacological properties including anti-cancer, anti-asthmatic, anti-diabetic, and others. In the past few years, the number of C. caesia plants was reported to have drastically decreased due to over-harvesting activity. To conserve this species, plant tissue culture method was used as a propagation tool for the mass production of C. caesia plantlets. Hence, this study aimed to optimize the extraction of phenolics content and antioxidant activities using response surface methodology. In this study, central composite design (CCD) was used to investigate the effects of three independent variables, namely solvent-solid ratio (mL/g), methanol concentration (%), and extraction temperature (°C), on phenolics content and antioxidant activities. Based on the results, the optimal extraction condition was achieved using 54.02 mL/g solvent-solid ratio, 70% methanol concentration, and 70 °C of extraction temperature
Multi-Objective Optimization Framework for Timber-Based Geriatric Facilities: Integrating Material Performance and Spatial Adaptability
No full textAn integrated design framework was developed to optimize timber-based elderly care facilities across three critical dimensions: environmental performance, health outcomes, and economic feasibility. By systematically analyzing engineered timber’s thermal regulation, humidity control, and biophilic properties, a data-driven model was established that balances material science with spatial adaptability requirements. It was found that cross-laminated timber (CLT) walls reduce HVAC energy consumption by 17% through delayed heat transmission, while maintaining stable indoor humidity levels (40 to 60% RH), which is crucial for respiratory health. The framework achieved a 23% improvement in elderly satisfaction compared to conventional designs, which can be attributed to wood’s natural terpene emissions and optimized spatial configurations. Modular timber partitions enabled rapid layout reconfiguration (2-hour adjustments) while maintaining acoustic insulation and wheelchair accessibility standards. Lifecycle analysis revealed 14% higher cost-effectiveness through prefabrication advantages and material durability. A case study validation showed timber systems support 12% larger window areas without compromising thermal performance, confirming practical applicability. This research provides a replicable model for integrating sustainable materials with geriatric care architecture, addressing both climate challenges and aging population needs
Mechanical and Sound Absorption Performance of Cashew Apple Bagasse and Mahogany Fruit-based Hybrid Composites
No full textMechanical and acoustic properties were studied for hybrid composites developed from Cashew Apple Bagasse (CAB) fibers and Mahogany tree Fruit Filler (MFF) in an epoxy matrix. The effect of alkali treatment (5% and 10% NaOH solutions) on CAB fiber composites at different weight fractions of MFF (0 to 25 wt%) was studied. The composites including 15 to 20 wt% MFF and treated with 5% NaOH offered the highest performance. Tensile, flexural, and impact strengths were improved by 40%, 50%, and 45.7%, respectively, when compared to untreated ones; also, a 56.7% increase in noise reduction coefficient (NRC) was measured. These enhancements can be attributed to the removal of surface impurities on the fiber surface, improving fiber-matrix bonding, and achieving even dispersion of filler in the matrix. Using alkali treatment with NaOH concentration exceeding 10% and with a higher filler content (> 20 wt%) embrittled the fibers, at the same time allowing them to clump together, which decreased both mechanical and acoustic performance. The best approach was to combine CAB and MFF in appropriate quantities into a hybrid composite, striking a good balance between reinforcement and load transfer efficiency. These composites are intended to be used in car interiors, soundproof panels, and lightweight structural parts
Opportunities and Challenges for the Development of the Office Furniture Industry: A Case from China
No full textThe office furniture industry plays a pivotal role in shaping modern work environments, reflecting broader trends in industrial development and the diffusion of innovation. However, it faces significant imbalances globally – particularly in developing countries – such as fragmented competition, limited intelligent manufacturing capabilities, and weak brand recognition. Taking China as a representative case, this study employed a mixed-methods approach combining bibliometric analysis, industry interviews, and SWOT analysis to explore the current status, key challenges, and future directions of the office furniture sector. The results show that while China has become a global manufacturing hub with mature supply chains and cost advantages, it still lags in brand influence, design innovation, and environmental sustainability. The evolving demands for ergonomic, modular, and smart furniture—driven by the rise of remote work and flexible spaces—present new opportunities for transformation. This study proposes development strategies for emerging markets focused on technological adoption, green manufacturing, and digital sales models. Findings offer valuable insights not only for the restructuring of China’s office furniture sector but also for guiding industrial upgrading in other developing economies
Biodegradable Polymers Based on Cellulose and Fiber from Coffee (Coffea spp.) and Sugarcane (Saccharum spp.) Residues
No full textAgro-industrial residues, derived from cereals, fruits, and vegetables, comprise non-consumable byproducts, including stems, leaves, peels, and seeds. Globally, approximately 3,045 million tons of such material is generated annually. In Mexico, the industrial crops coffee (Coffea spp.) and sugarcane (Saccharum spp.) yield residues rich in structural components, including lignin, cellulose, and hemicellulose. This study determined the physicochemical characteristics of cellulose isolated from these residues to formulate biodegradable polymers. Cellulose isolation was performed through chemical bleaching treatments, alkaline hydrolysis, and acid hydrolysis, yielding high-purity α-cellulose at 88.8% for coffee husks and 83.3% for sugarcane bagasse, with yields of 32.8% and 29.4%, respectively. Two biopolymers were developed: (A) 100% coffee husk cellulose and (B) a composite of 75% sugarcane bagasse fiber and 25% coffee husk cellulose. Biopolymer A demonstrated superior physicochemical properties, including moisture content, water vapor permeability, and solubility. Biodegradability assessments confirmed that both biopolymers were compostable within 110 days, exhibiting degradation extents of 84.4% (A) and 77.5% (B), primarily converting into organic matter and CO₂. These findings indicate that coffee and sugarcane agro-industrial residues are viable feedstocks for sustainable biopolymer production