Research on Formation Mechanism and Evolution Pattern of Bed Separation Zone during Repeated Mining in Multiple Coal Seams by Jianshuai Ji, Zhihua Li, Ke Yang, Guanghua Zhou, Guojun Ma, Cheng Liu, Peng Zhou

“…When the key stratum exists above all coal seams, a large separation zone will be formed under the key stratum when the upper coal is mined. …”
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Fracture Mechanism in Overlying Strata during Longwall Mining by Zhengyi Ti, Jiazhen Li, Meng Wang, Kang Wang, Zhupeng Jin, Caiwang Tai

“…We used the key stratum theory to establish a more realistic thin-plate mechanical model of elastic foundation clamped boundary and study the fracture mechanism of overlying strata during longwall mining. …”
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Genetic Types and Main Control Factors of Microfractures in Tight Oil Reservoirs of Jimsar Sag by Xiangye Kong, Jianhui Zeng, Xianfeng Tan, Haowei Yuan, Dan Liu, Qun Luo, Qianyou Wang, Rusi Zuo

“…Moreover, the fracture space increased and the fracture density decreased as the stratum thickness increased. When the stratum thickness was less than 2.5 m, the fracture space increased linearly with the stratum thickness, and when the stratum thickness was greater than 2.5 m, the fracture space remained constant. …”
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Prevention Technology for Strong Mine Pressure Disaster in the Hard-Roof Large-Mining-Height Working Face by Hongfei Duan, Lijuan Zhao

“…To solve the problem whereby the stope’s hard roof is difficult to collapse, the hard rock key stratum of the roof was hydraulically fractured to weaken the mechanical properties of the roof rock stratum. …”
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Theoretical Analysis of Mining Induced Overburden Subsidence Boundary with the Horizontal Coal Seam Mining by Weitao Yan, Junjie Chen, Yi Tan, Wenzhi Zhang, Lailiang Cai

“…From the bottom to the surface of the unconsolidated stratum, the internal friction angle decreases gradually and the angle between subsidence boundary and horizontal line also decreases gradually, so the subsidence boundary curve in the unconsolidated stratum is convex. …”
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Effect of Cobble Content on the Shear Behaviour of Sand-Cobble Mixtures by Chuang Wang, Jinyu Dong, Zhiquan Huang, Jianjun Zhou, Jihong Yang

“…The sand and cobble stratum is a kind of mechanically unstable stratum. …”
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Research on Formation Identification Based on Drilling Shock and Vibration Parameters and Energy Principle by Yu Ding, Zhuoying Tan, Shuguang Li, Zizhen Miao, Huifen Qu

“…In geotechnical engineering and geological survey, the stratum structure and its corresponding physical and mechanical properties are the most concerned. …”
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Factors Associated with the Decline of Kidney Function Differ among eGFR Strata in Subjects with Type 2 Diabetes Mellitus by Shu Meguro, Masuomi Tomita, Yusuke Kabeya, Takeshi Katsuki, Yoichi Oikawa, Akira Shimada, Toshihide Kawai, Hiroshi Itoh, Yoshihito Atsumi

“…We evaluated the factors correlated with the annual eGFR decline in 1303 subjects with type 2 diabetes whose eGFR was ≥30 mL/min/1.73 m2. eGFR strata were defined by baseline eGFR value as follows: stratum 1: ≥90, stratum 2: ≥60, <90, and stratum 3: ≥30, <60. …”
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Analysis of the Coal Fluidization Mining Process with the Continuous-Discontinuous Coupled Particle-Block Method by Jing Li, Chun Feng, Xinguang Zhu, Yiming Zhang

“…Numerical simulations can assist engineers in evaluating stratum deformation and optimizing affordable designs with affordable costs. …”
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Electrodeposition of platinum metals and alloys from chloride melts by Saltykova N.A.

“…Depending on the experimental conditions the layers had columnar, stratum and spiral (dissipative) structures. The stratum and dissipative structures were observed in the case of alloys only.…”
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Application of Artificial Freezing Method in Deformation Control of Subway Tunnel by Jie Li, Jinke Li, Yuancheng Cai, Dingyi Wu, Chunxia Guo, Wencai Zhao, Kunjie Tang, Yuhang Liu

“…However, it is very difficult to control the ground deformation, especially in the water-rich soft ground or in the tunnel engineering construction with strict requirements for surface settlement control. The traditional stratum reinforcement method may not meet the engineering needs. …”
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Failure Mechanism of Anti-Inclined Karst Slope Induced by Underground Multiseam Mining by Nanyun Wang, Zuliang Zhong, Xinrong Liu, Guofu Gao

“…The DEM results are as follows: firstly, under the action of underground coal mining, the overlying strata of the mountain deform toward the goaf and the deformation of the stratum increase significantly with the caving of the roof stratum; and the deep karst fissures in the overlying stratum have an important influence on the deformation of the mountain; the upper strata form a subsidence zone along the fissures, expanding the range of tensile fissures. …”
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In vivo human skin penetration of (–)-epigallocatechin-3-gallate from topical formulations by Scalia Santo, Trotta Valentina, Bianchi Anna

“…The aim of the study was to examine the effect of topical vehicles on the in vivo human stratum corneum penetration of the antioxidant and skin photoprotective agent (-)-epigallocatechin-3-gallate (EGCG). …”
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Prevalence of caries and social classes in a group of children under 6 years old in southern Chile by Gloria Analia González Nieto

“…According to Graffar's stratification, 47.7% belongs to the Medium High stratum, 50% to the Medium Low stratum and 2.3% to the Labor stratum. …”
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Study of the Construction Sequence of Overlapping Tunnels by the Shield Tunneling Method: A Case Study of the Longest Overlapping Tunnel in China by Zhiyong Yang, Yaowen Ding, Yusheng Jiang, Kuanda Fang, Linwei Dong, Weiqiang Qi, Zheng Wei

“…The difference between the two working conditions on the vertical displacement of the stratum mainly occurs in the middle stratum of the upper and lower tunnels, and the proportion of the strata in the uplifted state and subsidence state is different. …”
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Countryside Middle Class Growth in Brazil and its Impacts on Domestic Tourism by Anderson Pereira Portuguez, Vanda Aparecida da Silva Alves

“…This social stratum is the ground of worldwide consumer mass and therefore the target of the most varied advertising campaigns, including those that promote tourist destinations. …”
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Food for thought: interpreting the parable of the loyal and wise slave in Q 12:42-44 by L. Howes

“…If so, only Q 12:42-44 originally appeared in Kloppenborg’s formative stratum, or Q1. The purpose of the present article is to ascertain the parable’s meaning as it seemingly appeared on the level of Q’s formative stratum. …”
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Treatment and Effect of Loess Metro Tunnel under Surrounding Pressure and Water Immersion Environment by Lixin Wang, Chenghan Li, Junling Qiu, Ke Wang, Tong Liu, Heng Li

“…To deal with the water inrush disaster of the tunnel in a collapsible loess stratum, the mechanism of grouting diffusion in the loess stratum is analyzed. …”
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Bed Separation Characteristics of an LTCC Panel and Subsidence Controlling Grouting: Case Study of Longquan Coal Mine, China by Jun Zheng, Guoqing Zhou, Yuliang Zhou, Dongfeng Yuan, Tielin Zhao

“…Numerical results indicate that in addition to the bed separation below the primary key stratum, several small bed separations may also occurred in the strata between the primary key stratum and the subordinate key stratum. …”
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Instability Mechanism of Cavity-Bearing Formation under Tunnel Excavation Disturbance by Tao Liu, Haotong Wang, Xiuting Su, Kexian Li, Shiqun Liu, Fengsong Guo

“…This indicates that disturbance during tunnel excavation would cause greater instability in a stratum when bad geological bodies, such as cavities, exist in the stratum.…”
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