Article
Engineering, Environmental
Jinfeng Li, Huie Chen, Xiang Gao, Qi Ding, WenChong Shan, Haotian Guo, Jinpeng Zhuo
Summary: Desiccation crack is a significant factor contributing to engineering and environmental disasters. This study conducted tests on lean clay samples with different dryness degrees under wet-dry (WD) cycles and wet-dry-freeze-thaw (WDFT) cycles to analyze crack formation and development. The results show that the crack ratio and width decrease with higher dryness degree under consecutive WD cycles, while samples subjected to WDFT cycles exhibit higher crack ratio and wider cracks. Under lower dryness degree, the crack ratio and width remain relatively unchanged after each WD cycle, mainly consisting of small, shallow, and densely distributed sub-cracks. The research findings provide valuable insights into soil crack evolution and its mechanisms under complex environmental conditions.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2023)
Article
Construction & Building Technology
Xiangyi Zhu, Yin Bai, Xudong Chen, Zhenghong Tian, Yingjie Ning
Summary: This study determined the morphology indexes of hydraulic concrete subjected to different freeze thaw cycles using the underwater method, and established a prediction model for the abrasion resistance. The results show that as the freeze thaw damage intensifies, the abrasion resistance of hydraulic concrete continues to decline.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Mathematics, Interdisciplinary Applications
Jielin Li, Shuaijie Tan, Chun Yang, Hui Chen, Yun Lin
Summary: In this study, XRD component measurement, P-wave velocity, freeze-thaw cycling test at different times, uniaxial compression test, and scanning electron microscope (SEM) test were conducted to investigate the mechanical properties and microstructure evolution of skarn under freeze-thaw cycles. The results showed that the mass of the rock increased and the P-wave velocity, compressive strength, elastic modulus, and Poisson's ratio all decreased with an increase in the number of freeze-thaw cycles. The SEM images revealed the development and expansion of fine pores and fissures in the rock, leading to a decrease in inter-particle bonding force and loosening of the cement. The relationship between compressive strength and fractal dimension was established to further understand the mechanism of skarn damage under freeze-thaw action, providing a theoretical basis for characterizing freeze-thaw damage of rocks in cold regions.
FRACTAL AND FRACTIONAL
(2023)
Article
Engineering, Environmental
Qi Zhang, Yingjie Xia, Jinchi Zhao, Chunan Tang, Bo Zhang
Summary: This study investigates the effect of rubber powder on the characteristics of crack evolution in expansive soil under freeze-thaw cycles in the seasonally frozen region. The results show that adding 5% rubber powder effectively reduces the complexity of crack evolution and surface crack ratios. The interlocking action of the rubber particles resists freezing tension, decreasing soil deformation and crack formation.
COLD REGIONS SCIENCE AND TECHNOLOGY
(2024)
Article
Engineering, Mechanical
Mengxi Wei, Lan Qiao, Qingwen Li, Naifu Deng
Summary: This study investigates the progressive cracking process in engineering rock mass in cold regions caused by freeze-thaw cycles. Different modes of fracture toughness were examined, and the applicability of fracture criterion in predictions was assessed. The results showed that all modes of fracture toughness exhibited similar descending trends after various freeze-thaw cycles, and the results predicted by the generalized maximum tangential stress criterion agreed with the experimental data. The study also found that the fractal dimensions of mode I and mixed-mode I-II fracture surfaces increased with the number of freeze-thaw cycles, indicating rougher and more complicated fracture surfaces.
FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
(2023)
Article
Construction & Building Technology
Jisheng Qiu, Ruyi Zhang, Xiao Guan, Kun Cheng, Yang Gao, Zhijie Xiao
Summary: Coal gangue, a type of solid waste, can be utilized as aggregate in concrete. This study investigated the deterioration law of coal gangue concrete under the combined action of cyclic loading and freeze-thaw, and established a quantitative relationship between the pore structure and compressive strength damage.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Geological
Chao Hou, Xiaoguang Jin, Jie He
Summary: Freeze-thaw cycles induce deterioration on rocks by damaging microstructures such as pores and pore throats. This study found that with increasing freeze-thaw cycles, the proportion of micropores decreases exponentially while porosity and pore throat radius increase exponentially. The average uniaxial compressive strength and elastic modulus of anhydrite rock decrease exponentially with freeze-thaw cycles, showing a correlation with porosity and pore structure fractal dimension.
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2022)
Article
Engineering, Geological
Shibing Huang, Shilin Yu, Yuhang Ye, Fei Liu
Summary: This study continuously measured the microscopic pore structure of five sandstones after different freeze-thaw cycles using mercury intrusion porosimetry (MIP). The results showed that the microscopic pore structure of these sandstones exhibited obvious fractal characteristics under freeze-thaw conditions, with a gradual reduction in fractal dimension and a more uniform distribution of pore size. In addition, a bimodal exponential model effectively characterized the size distribution of nano- and micropores for these sandstones. The characteristic pore radii of nano- and micropores increased significantly with higher freeze-thaw cycles. Porosity, P-wave velocity, and uniaxial compressive strength (UCS) were found to be highly correlated with the fractal dimensions and characteristic pore radii, with P-wave velocity and UCS decreasing as pore radius increased or fractal dimension decreased. This study bridges the gap between microscopic pore structure changes and the deterioration of macroscopic physicomechanical properties under freeze-thaw, providing a better understanding of the macro-micro frost damage mechanism for rocks.
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2023)
Article
Construction & Building Technology
Aref Ebrahimi Besheli, Kianoosh Samimi, Fereidoon Moghadas Nejad, Ehsan Darvishan
Summary: This study focused on improving the mechanical properties and resistance to surface scaling against de-icing salt of concrete paving by using different cementitious materials. The results showed that replacing 15% of cement with metakaolin or zeolite enhanced compressive strengths and resistance to chloride penetration. Additionally, mixtures containing pozzolan performed better performance against de-icing salt.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Food Science & Technology
Zhili Pan, Yibo Bai, Lina Xu, Yanjie Zhang, Mengmeng Lei, Zhongmin Huang
Summary: This study investigated the effects of freeze-thaw cycles on the textural properties and microscopic characteristics of quick-frozen dumpling wrappers. The results indicated that the crosslinking of gliadin and glutenin played a crucial role in maintaining the quality and stability of the dumpling wrappers.
Article
Construction & Building Technology
Jiawei Zhang, Hang Li, Shengwei Liu, Lin Sun, Chenghong Yang, Rongling Zhang
Summary: This study simulated the erosion environment of sulfate and freeze-thaw cycles coupling that may be suffered in Northwest China, and investigated the bonding performance of CFRP-reinforced concrete structures in this environment. The experimental results showed that under the coupling erosion, the failure mode of the CFRP-concrete interface changed and the bonding performance of the interface was significantly reduced.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Food Science & Technology
Ying Lv, Jing Xie
Summary: The study revealed that multiple freeze-thaw cycles can lead to microstructural disruption, protein oxidation, and deteriorate the textural properties of cuttlefish flesh. This process affects the structure and texture of cuttlefish myofibril protein, leading to protein aggregation and degradation.
Review
Construction & Building Technology
Jinjun Guo, Wenqi Sun, Yaoqun Xu, Weiqi Lin, Weidong Jing
Summary: This paper provides a detailed review of the theory and models regarding the deterioration of concrete microstructures in freeze-thaw cycles. It summarizes the theory of water phase transition deterioration and the mechanisms of chloride-F-T and sulfate-F-T damage. Microstructure testing of hydration products, pore structure, microcracks, and interfacial transition zones is also discussed.
Article
Mathematics, Interdisciplinary Applications
Hao Tan, Yongjun Song, Xixi Guo
Summary: This study utilized CT technology to investigate the fractal parameters of different sandstone samples in freeze-thaw environments. The research revealed that the anisotropy of sandstone was enhanced during the freeze-thaw process, and changes in the fractal characteristics of sandstone were influenced by the variation of fracture structures, providing a better understanding of the freeze-thaw characteristics of sandstone materials.
FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY
(2021)
Article
Geosciences, Multidisciplinary
Fansheng Kong, Lei Nie, Yan Xu, Xiangjian Rui, Yuanyuan He, Tao Zhang, Yuzheng Wang, Chao Du, Chonghao Bao
Summary: Freeze-thaw effects on soda-saline loessal soils in the Songnen Plain of Northeast China have a significant impact on soil erosion, with continued cycles leading to deterioration in soil erosion resistance until stabilization after approximately 10 cycles. The erosion resistance of the soil decreased by up to 59.2% after 15 freeze-thaw cycles, while disintegration velocity increased by up to 208.8%. The microstructure of the soil was continuously adjusted during the freeze-thaw process, with increased microcracks, weakened cementation, enhanced pore connectivity, and increased pore homogenization.
Review
Food Science & Technology
Weixuan Sun, Yuxue Zheng, Shiguo Chen, Jianle Chen, Huiling Zhang, Haitian Fang, Xingqian Ye, Jinhu Tian
Summary: This study reviewed the mechanisms of suspending casein micelles by ionic polysaccharides and discussed the effects of both ionic and non-ionic polysaccharides in the formation of acidified milk gel.
FOOD REVIEWS INTERNATIONAL
(2023)
Review
Food Science & Technology
Thamila Dib, Haibo Pan, Shiguo Chen
Summary: This review highlights the recent advances in pectin-based nanoencapsulation techniques for the enrichment of bioactive components. The entrapment and release properties of curcumin in pectin-based nanoparticles, as well as the improvement of carrier properties through the addition of natural polymers, are of particular interest.
FOOD REVIEWS INTERNATIONAL
(2023)
Article
Chemistry, Applied
Zhiqiang Hou, Luqin Luan, Xinxin Hu, Shiguo Chen, Xingqian Ye
Summary: This study investigated the effects of high pressure processing on the in vitro fermentation characteristics of cyanidin-3-glucoside-rhamngalacturonan-I pectin. The results showed that high pressure processing significantly decreased the pH value in the faecal fermentation liquid and promoted the production of short-chain fatty acids. In addition, it was found that high pressure processing increased the richness of intestinal flora and promoted the growth of potentially beneficial genera.
FOOD HYDROCOLLOIDS
(2023)
Article
Biotechnology & Applied Microbiology
Yue Zhang, Xinyu Liao, Jinsong Feng, Donghong Liu, Shiguo Chen, Tian Ding
Summary: Salmonella spp. is a major cause of foodborne outbreaks worldwide. This study found that Salmonella can enter a viable but nonculturable (VBNC) state in liquid egg products, and under certain conditions, can resuscitate. This has important implications for food safety and understanding the health risks associated with Salmonella.
Article
Biochemistry & Molecular Biology
Chaoyang Wei, Li Yao, Yu Zhang, Shuyi Qiu, Xiangyong Zeng, Shiguo Chen, Xingqian Ye
Summary: This study investigated the structure and effects of polysaccharide from peach gum (DPG2) on ameliorating DSS-induced acute colitis in mice. The results showed that DPG2 is a type of AG II ara-binogalactan with a coil-like structure. The intake of DPG2 effectively improved the phenotypes of colitis and the oxidative stress status of mice, as well as reduced inflammation. These findings suggest that peach gum polysaccharide has potential applications in the food industry as a functional component.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Agriculture, Multidisciplinary
Jiaxiong Wu, Chengxiao Yu, Sihuan Shen, Yanming Ren, Huan Cheng, Hang Xiao, Donghong Liu, Shiguo Chen, Xingqian Ye, Jianle Chen
Summary: Fermentation characteristics and structural properties of high rhamnogalacturonan I pectic polysaccharides (RGI) and free-radical degraded RGI (DRGI) were studied using a human fecal batch-fermentation model. The results showed that RGI degraded faster and produced more acetate and propionate than DRGI. Both RGI and DRGI promoted the growth of Bacteroides, Bifidobacterium, and Lactobacillus, but the composition and metabolic pathways of the microbiota differed between them. This study emphasized the importance of large molecular weight in the gut microbiota modulatory effect of RGI-type pectic polysaccharides.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Fisheries
Kohsuke Nakamura, Keita Abe, Gakushi Ishimura
Summary: This study quantifies the impact of landing regulation on specific species due to the management measures of single-species-based fishing quotas on revenue of the large-scale setnet fishery in Hakodate, Hokkaido. The results indicate that such landing regulation not only reduces average revenue by about 52%, but also increases revenue risk by about 120%, and decreases the portfolio effect. It suggests that the management measures of single-species-based fishing quotas destabilize revenue from the large-scale setnet fishery.
Article
Fisheries
Shinya Baba, Gakushi Ishimura, Keita Abe, Kaitho Kanazawa, Tomoaki Goto
NIPPON SUISAN GAKKAISHI
(2023)
Article
Food Science & Technology
Ruge Lin, Yi Wang, Huan Cheng, Shiguo Chen, Xingqian Ye, Haibo Pan
Summary: Acid-catalyzed depolymerization is the most practical method for analyzing the subunit composition and polymerization degree of proanthocyanidins. However, the recognized method has some limitations, including the formation of anthocyanidins during purification process. In this study, grape seed extract was used instead of purified proanthocyanidins, and hydrophilic interaction chromatography and reverse-phase chromatography were employed for analysis. The established method showed higher accuracy and speed compared to the recognized method.
Article
Food Science & Technology
Lijuan Hou, Laiming Zhang, Chengxiao Yu, Jianle Chen, Xingqian Ye, Fuming Zhang, Robert J. Linhardt, Shiguo Chen, Haibo Pan
Summary: In this study, a novel one-pot coaxial electrospinning method was used to encapsulate curcumin in zein and Eudragit S100 fibers, forming zein-curcumin core-shell nanoparticles. The resulting structure provided double protection for curcumin and exhibited pH responsiveness and sustained release performance, making it suitable for sustainable and controllable intestine-targeted drug delivery.
Article
Food Science & Technology
Jiaxiong Wu, Sihuan Shen, Qiang Gao, Chengxiao Yu, Huan Cheng, Haibo Pan, Shiguo Chen, Xingqian Ye, Jianle Chen
Summary: In this study, three different pectic polysaccharides were recovered from citrus canning processing water and their prebiotic potential and relationship between the RG-I domain and fermentation characteristics were evaluated. The results showed that the RG-I domain significantly influenced the fermentation characteristics of pectic polysaccharides, especially in terms of short-chain fatty acid production and modulation of gut microbiota. Pectins with a high proportion of the RG-I domain performed better in acetate, propionate, and butyrate production, and were degraded by Bacteroides, Phascolarctobacterium, and Bifidobacterium. This study highlights the benefits of pectic polysaccharides recovered from citrus processing and the role of the RG-I domain in their fermentation characteristics, providing a strategy for green production and value addition in food factories.
Article
Chemistry, Applied
Shiguo Chen, Luqin Luan, Yanru Zhang, Feifei Liu, Xingqian Ye, Zhiqiang Hou
Summary: This study investigated the structural and in vitro fermentation characteristics of Rosa sterilis S.D.Shi polysaccharides (RSP) extracted using different methods. The results revealed that the extraction methods had significant effects on the structure and probiotic effects of RSPs. Different RSPs exhibited variations in monosaccharide composition, molecular weight, and promotion of beneficial bacteria growth. Importantly, the enzyme-extracted RSP showed unique metabolic pathways. These findings provide valuable insights into the relationship between the structure and probiotic function of RSPs, which can contribute to the development of functional products from Rosa sterilis S.D.Shi.
Article
Biochemistry & Molecular Biology
Luqin Luan, Haibo Pan, Yihao Chen, Xingqian Ye, Zhiqiang Hou, Shiguo Chen
Summary: Rosa sterilis S. D. Shi, a new variety of R. roxburghii Tratt, has been found to have anti-inflammatory properties against intestinal inflammation. The study showed that the extract from its fruits can increase mucin expression, reduce the production of inflammatory factors, regulate gut microbiota composition, and promote the production of short-chain fatty acids. This suggests that the extract has great potential as a dietary supplement for preventing and relieving colitis and colitis-related diseases.
Article
Food Science & Technology
Jiabei Xia, Cenrong Zhang, Kai Zhu, Xingyu Mei, Huan Cheng, Shiguo Chen, Xingqian Ye, Jianle Chen
Summary: The starch and oligosaccharide components of Polygonatum rhizome were investigated using iodine-potassium iodide colorimetric detection and enzymatic hydrolysis. It was found that there was no starch in the rhizome, and fructo-oligosaccharides were the main component, accounting for approximately 28.95%. Oligosaccharides with degrees of polymerization above 10 were the most abundant components. This study provided new evidence and clarified the unknown carbohydrate components of Polygonatum rhizome, highlighting its functional value.
FOOD QUALITY AND SAFETY
(2023)
Article
Biochemistry & Molecular Biology
Chengxiao Yu, Yihao Chen, Shokouh Ahmadi, Dongmei Wu, Jiaxiong Wu, Tian Ding, Donghong Liu, Xingqian Ye, Shiguo Chen, Haibo Pan
Summary: In this study, the anti-colitis effects of goji berry leaf, mulberry leaf, and their fruits were compared. The results showed that goji berry leaf and goji berry had significant effects in reducing colitic symptoms and ameliorating tissue damage, while mulberry leaf did not. Goji berry also showed the best performance in inhibiting the overproduction of pro-inflammatory cytokines and improving damaged colonic barrier. Additionally, goji berry and goji berry leaf could restore gut microbiota dysbiosis and ameliorate inflammation.
