Article
Engineering, Geological
Ke Wang, Hongjie Tang, Rui Wang, Jian-Min Zhang
Summary: A practical nonlinear elastic EBD constitutive model is developed to connect the stress-strain behavior of rockfill material with dam deformation. The traditional EB model has difficulties in simulating settlement and horizontal displacement of rockfill dams, whereas the EBD model can simulate both well. Moreover, the EB model parameters that achieve acceptable simulation of dam deformation result in poor simulation of element level stress-strain behavior, whereas the EBD model can achieve good simulation of both dam deformation and element level stress-strain behavior simultaneously.
Article
Energy & Fuels
Jian-Tong Liu, Jian-Bo Wang, Hong-Kui Ge, Wei Zhou, Bei-Bei Chen, Xiao-Di Li, Xian-Jie Xue, Sen-Lin Luo
Summary: Due to the existence of gravel, the failure mode of glutenite is not only controlled by confining pressure, but also influenced by the gravel. The failure of glutenite is characterized by producing cracks around gravels, and the distribution patterns of cracks vary under different confining pressures.
Article
Multidisciplinary Sciences
Honggang Zhao, Chao Liu, Gun Huang
Summary: The behavior of sandstone under different initial confining pressures and unloading rates was studied in triaxial experiments. It was found that sandstones exhibited shear dilatancy before failure, with crack density increasing as initial confining pressure increased. The normalized permeability was positively correlated with unloading rates, with a linear/nonlinear relationship between the permeability and volumetric strain depending on the unloading rates.
ROYAL SOCIETY OPEN SCIENCE
(2021)
Article
Engineering, Geological
Shihai Bian, Zhankuan Mi, Guoying Li, Yingbo Ai, Guoliang Du
Summary: Rockfill materials used for dam construction exhibit obvious stress path dependency, and the conventional constitutive models cannot accurately describe their stress-strain response. This paper proposes a modified generalized plasticity model considering stress paths effect based on the analysis of large-scale triaxial experiments, which can accurately simulate the behavior of rockfill materials under various stress paths.
SOILS AND FOUNDATIONS
(2022)
Article
Engineering, Geological
Jialin Xu, Chengshun Xu, Linghui Huang, Masayuki Hyodo
Summary: This study conducted a series of triaxial tests on artificial methane hydrate-bearing specimens, and discussed the effects of effective confining pressure and hydrate saturation on the strength parameters and stress-dilatancy characteristics. The results showed that the strength and stiffness of hydrate-bearing sediments increase with increasing effective confining pressure, and shearing under high effective confining pressure leads to significant breakage of host particles.
Article
Engineering, Environmental
Long Wang, Jungao Zhu, Zongliang Zhang, Huifeng Zheng
Summary: Dry density has significant effects on the stress-strain characteristics, peak friction angle, and secant modulus of slate rockfill materials. A non-linear shear strength envelope is proposed to describe shear resistance, with dry density influencing peak friction angle while confining pressure affects it inversely. Moreover, dry density also plays a role in particle breakage for the slate material.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2021)
Article
Green & Sustainable Science & Technology
Wendong Xu, Xuefeng Li, Xilin Lue, Wenwei Yang
Summary: Investigated the cyclic behavior of desert subgrade under initial shear stress conditions and found that the initial shear stress level significantly influences the cyclic response. With the increase in initial shear stress, the permanent strain increases first and then decreases, with the maximum permanent strain occurring at 50 kPa. The cyclic resistance decreases with the increase in the coefficient of cyclic intermediate principal stress.
Article
Engineering, Geological
Yibing Deng, Yuksel Yilmaz, Aydin Gokce, Ching S. Chang
Summary: Particle morphology, including both shape and size, has a significant impact on the shear behavior of granular soils. This study focuses on the influence of particle size on the shear strength and stress-dilatancy behavior of sands, revealing that it affects peak friction angle, dilation angle, and stress-dilatancy relations. The mechanism behind this effect is discussed in terms of kinematic movement at the particle level.
Article
Engineering, Geological
Shao-Heng He, Hua-Feng Shan, Tang-Dai Xia, Zhi-Jun Liu, Zhi Ding, Fan Xia
Summary: This study investigates the effect of temperature on the drained shear behavior of calcareous sand. The results show that an increase in temperature aggravates particle breakage, affecting the strength and dilatancy of the sand. A stress-dilatancy equation and an empirical model for phi(cs) were proposed based on the experimental findings.
Article
Engineering, Geological
Junhao Yang, Linyou Pan, Chuan Gu, Jun Wang, Miaomiao Ge, Ning Fan, Xuan He
Summary: This study investigates the effects of different factors on the permanent and resilient deformation behaviors of clay under partially drained conditions. The results show that an increase in consolidation-induced anisotropy leads to an increase in permanent axial strain. Based on the shakedown theory, an allowable cyclic stress ratio is determined, and a linear relationship is established between permanent volumetric strain and cyclic mean principal stress amplitude. It is suggested that the prediction and control of subgrade clay settlement in engineering practice should consider all the factors involved in this study.
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2022)
Article
Energy & Fuels
Junwen Zhang, Wenbing Fan, Weimin Niu, Shanyong Wang
Summary: Stress path and occurrence depth have significant effects on the energy evolution properties of deep rock. Triaxial tests were conducted to investigate the energy evolution characteristics and distribution process of deep sandstone under different simulated depths and stress paths. The results show that the energy of deep sandstone is positively correlated with the simulated depth under similar stress paths. The energy under one-sided unloading conditions of X-direction stress is greater than that under two-sided unloading conditions, which is greater than that under one-sided unloading conditions of X- and Y-direction stresses. The ratio k of deep sandstone exhibits different trends with increasing Z-direction strain at different simulated depths. Simulated depth is positively correlated with the initial energy storage and energy storage limit of deep sandstone under the same stress path. The pre-peak energy dissipation rate of deep sandstone decreases gradually with increasing simulated depth, while the post-peak energy dissipation rate increases gradually.
GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
(2022)
Article
Engineering, Geological
Wan-li Guo, Ge Chen
Summary: This paper investigates particle breakage in rockfill during shearing. By using a reduction strategy for the friction coefficient, a method to estimate the breakage energy is developed. The results show that the particle breakage indices and fractal dimension are proportional to the breakage energy.
Article
Engineering, Geological
Wan-li Guo, Dan-qing Song, Xiao-mei Li
Summary: The impact of particle breakage on the critical state line (CSL) of granular soils has been investigated in this study. Large-scale shearing tests were conducted on rockfill materials under different initial gradations, void ratios, and confining pressures. The results showed that particle breakage leads to decreases in both stress ratio and void ratio at the critical state. A unified equation for CSL and a none breakage critical state line (NBCSL) was derived, where the intercept and gradient are related to particle breakage. This study provides insights into the translation and rotation of CSL induced by changing gradation and void ratio from the perspective of particle breakage.
Article
Materials Science, Characterization & Testing
Wanli Guo, Ge Chen, Junjie Wang, Fuxian Jian
Summary: The proposed study introduces new dilatancy equation and yield function, which provide a better description of the dilatancy and yielding behavior of granular materials. The model determines dilatancy based on the relationship between total input energy and shearing strain, and adjusts the shape of the yield surface by modifying the critical stress ratio.
JOURNAL OF TESTING AND EVALUATION
(2022)
Article
Construction & Building Technology
Jiangtao Fan, Yingjun Jiang, Yong Yi, Tian Tian, Kejia Yuan, Changqing Deng
Summary: The study found that increasing loading speed and confining pressure levels can enhance the dilatancy resistance of asphalt mixture. When pores are evenly distributed, the dilatancy angle decreases as porosity increases; an increase in aggregate content leads to an increase in dilatancy angle. Different aggregate distribution characteristics result in varying dilatancy performances.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Computer Science, Artificial Intelligence
Hao Long, Xiaoxia Li, XiaoWei Liu, Wenle Wang
Summary: In this paper, an incremental algorithm called BBTA is proposed for detecting dynamic communities based on the tracking of backbones and bridges. The algorithm achieves higher accuracy and better performance by reflecting critical edges and key connections.
APPLIED INTELLIGENCE
(2023)
Article
Plant Sciences
Han Wang, Yan Liu, Yi-Kai Jang, Si-Yi Wang, Xiao-Mao Li, Juan Pan, Wei Guan, Adnan Mohammed Algradi, Hai-Xue Kuang, Bing-You Yang
Summary: Two new phenylpropanoids and nine known compounds were isolated from Solanum capsicoides leaves. Their structures were determined using spectroscopic methods and comparing with literature. In addition, the compounds showed inhibitory effects on inflammation.
JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH
(2023)
Article
Engineering, Manufacturing
Gangli Yang, Xiaoyan Li, Xu Han, Shanshan Li
Summary: This study investigated the changes in microstructure and grain orientation of the Cu3Sn solder joint during isothermal aging at 420 degrees C. It was found that the original Cu3Sn solder joint transformed into full Cu(41)Sn(11) solder joint and eventually into full alpha(Cu) solder joint during aging. The formation of micro-voids during the conversion process resulted in lower reliability of the solder joint. The average grain sizes of interfacial phases exhibited an initial increase followed by a decrease during aging. The preferred orientations of the different phases were also examined.
SOLDERING & SURFACE MOUNT TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Yifan Lai, Xiaolu Hu, Guibing Shi, Juntao Yu, Li Wang, Zhifeng Gao
Summary: In order to conserve energy, the loss and efficiency of a brushless direct current (BLDC) motor were investigated. By replacing the silicon steel stator with an amorphous metal stator and improving the motor design, the motor efficiency was improved by 4.76% and the weight was reduced by 11.36%.
JOURNAL OF ELECTRICAL ENGINEERING & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jian Wang, Zheng Jiang, Ran Ma
Summary: Wastewater contaminated by radionuclides is a significant environmental concern that poses a threat to human health. In this study, beta-cyclodextrin modified molybdenum disulfide was investigated as an adsorbent to remove europium from aqueous solutions. The experimental results indicated that the adsorption of Europium(III) relied on pH and temperature. The Langmuir model better described the removal process, which was found to be a monolayer adsorption. The adsorption capacity of beta-CD-MoS2 for Europium(III) reached 107.1 mg/g and the adsorption process was endothermic. The surface hydroxyl groups controlled the retention of Europium(III). These findings provide important information for environmental pollution control and the elimination of Europium(III).
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2023)
Article
Behavioral Sciences
Xueyan Zhang, Jun Li, Xiaomei Li
Summary: Previous studies have shown the importance of the prefrontal cortex in decision-making tasks and the precuneus in mediating metacognition. This study further explores the metabolic correlates of metacognition using magnetic resonance spectroscopy. The findings suggest that the right precuneus plays a crucial role in metacognition.
BEHAVIORAL NEUROSCIENCE
(2023)
Review
Medicine, Research & Experimental
Xueru Wang, Gang Xu, Hanyu Liu, Zhengtao Chen, Susu Huang, Jiushu Yuan, Chunguang Xie, Lian Du
Summary: Diabetic peripheral neuropathy (DPN) is a common complication of diabetes, and finding effective treatments for DPN is crucial. Schwann cells (SCs) play an important role in the development of DPN by inhibiting apoptosis. Previous studies have shown the potential of Chinese herbal medicine (CHM) in treating DPN. This review explores the effects of CHM on SCs apoptosis through different pathological pathways and provides new insights for treating DPN.
BIOMEDICINE & PHARMACOTHERAPY
(2023)
Article
Chemistry, Applied
Xin Shu, Yajie Wei, Xiaoli Luo, Jinfang Liu, Like Mao, Fang Yuan, Yanxiang Gao
Summary: This study investigated the feasibility of using rhamnolipid-stabilized nanostructured lipid carrier as a particulate filler and its impact on the properties of a composite hydrogel. The results showed that the addition of RNLC improved the texture and rheological properties of the hydrogel, but higher filling levels made the hydrogel more rigid and brittle.
FOOD HYDROCOLLOIDS
(2023)
Article
Genetics & Heredity
Dandan Li, Xiaomei Li, Xintong Liu, Zhao Zhang
Summary: This study conducted a comprehensive genome-wide analysis of the bZIP gene family (RcbZIPs) in rose, revealing their phylogenetic relationships, gene structure, chromosome localizations, gene duplication, and potential functions. The expression analysis showed significant differential expression of 16 RcbZIPs in response to Botrytis cinerea infection, suggesting their candidate role in regulating rose's response to gray mold infection. Virus-induced gene silencing (VIGS) and overexpression (OE) studies demonstrated the involvement of RcbZIP17 in rose's resistance to gray mold. This study provides valuable information for further investigation into the function of the bZIP gene family in rose.
Article
Optics
Jiazhu Wang, Xiaohui Li, Liang Jin, Renyan Wang, Shangzhi Xie, Tiebin Wang, He Zhang, Yingtian Xu, Yan Li, Xiaohui Ma
Summary: In this paper, an all-fiber single- and dual-wavelength tunable CVBs fiber laser using the nonlinear optical saturation absorption characteristics and filtering properties of nonlinear multimode interference (NL-MMI) is reported for the first time. The experiment demonstrated the ability to tune the central wavelength of the mode-locked CVBs fiber laser in both single- and dual-wavelength configurations. This NL-MMI-based wavelength-tunable ultrashort pulse CVBs fiber laser has great potential in optical communication.
OPTICS AND LASER TECHNOLOGY
(2023)
Article
Neurosciences
Zifeng Wu, Hanyu Liu, Enshi Yan, Xinying Zhang, Yuanyuan Wang, Chaoli Huang, Teng He, Liying Miao, Ling Yang, Riyue Jiang, Changyong Qi, Cunming Liu, Di Wang, Chun Yang
Summary: The abnormal composition of gut microbiota plays an essential role in the comorbidity of chronic pain and anxiety. Increasing the level of Desulfovibrio may alleviate chronic pain-anxiety comorbidity.
PSYCHOPHARMACOLOGY
(2023)
Article
Engineering, Geological
Zengchun Sun, Yang Xiao, Minqiang Meng, Hong Liu, Jinquan Shi
Summary: The deformation and strength of soil are significantly influenced by thermal loading, especially in thermal-related geotechnical infrastructures. This study investigates the behavior of sand-clay mixtures under thermal loading and found that the mixtures exhibit plastic volumetric contraction deformation and decrease in yield stress with increasing temperature.
Article
Nursing
Fang Niu, Qinghua Liu, Xiaohui Li, Xiang Li
Summary: This study evaluated a new fixation band for tracheal catheter in the ICU. The results showed that the new band reduced catheter dislocation and the incidence of mucosal pressure injury, and also decreased nursing cost.
Article
Engineering, Environmental
Zhongfeng Jiang, Xiaohui Li, Xuanxuan Zhang, Weiwei Wang, Haoliang Hou
Summary: This study proposes a water resource pollution load intensity measurement based on the SWAT model, aiming to solve the problems of high measurement time-consuming, high deviation, and small area in traditional methods. The method involves building a basic database, summarizing hydrological characteristic data, designing a water pollution output coefficient model using the SWAT model, and using the comprehensive pollution index method to measure the pollution load intensity of water resources. The experimental results demonstrate that this method reduces measurement time, improves measurement accuracy, and expands the measurable area.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL TECHNOLOGY AND MANAGEMENT
(2023)
Article
Engineering, Geological
Yang Xiao, Bingyang Wu, Jinquan Shi, Lei Wang, Han-Long Liu
Summary: A meter-scale model test was conducted to validate the sustainable soil reinforcement technique of microbially induced calcite precipitation (MICP). Mechanical and physical testing methods were explored to evaluate the biocementation efficiency of the model tests. The results showed that the level of biotreatment increased the strength of the sand base, with the maximum strength achieved after eight cycles. The heterogeneity of the biotreatment was observed in the sand base, as evidenced by differences in dry density, shear-wave velocity, and unconfined compression strength.
INTERNATIONAL JOURNAL OF GEOMECHANICS
(2023)
