Quantum spin-engineering in on-surface molecular ferrimagnets by Wantong Huang, Máté Stark, Paul Greule, Kwan Ho Au-Yeung, Daria Sostina, José Reina Gálvez, Christoph Sürgers, Wolfgang Wernsdorfer, Christoph Wolf, Philip Willke

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Research on key technology for efficient drilling and completion well of L-shaped horizontal well of surface mining by Yuanzhi ZHANG, Yi WANG, Jing ZHANG

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Transformation of Engineered Copper Oxide Nanoparticles in Surface Waters by Patrice Turcotte, Christian Gagnon

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Surface fatigue microcracks in turbocompressor blades of a turboshaft engine by Pavlas J., Růžička M., Slavík S.

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Integrated wellbore-surface pressure control production optimization for shale gas wells by Xingyu Zhou, Liming Zhang, Ji Qi, Yanxing Wang, Kai Zhang, Ruijia Zhang, Yaqi Sun

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Effect of surface defect characteristics on the fatigue life of well-testing steel wires by Hongbin Shan, Jian Tan, Yongjun Xiao, Guo Li, Guanghua Tang, Jun Jing

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Response Surface Methodology for Modelling and Optimizing Efficiency in Deep Well Pumping Systems by Nuri Orhan, Murat Çavuşlar, Meki Solmaz, Muhammet Emre Erdem

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Surface-engineered bio-manufactured gas vesicles for multimodal imaging of glioma by Juanjuan Li, Yutong Cui, Xiaoli Jiang, Xue Chi, Hong Li, Xiang Ma, Yanqiong Tang, Denggao Huang, Zhu Liu

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The influence of surface rocking motion on the dynamic responses of drillstring during horizontal well drilling by Liu Yang, Chen Sitong, Wei Shuyong, Tao Haijun, Xiang Xingyun, Ma Tianshou

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Optimization design of stress relief coalbed methane surface well in a high-gas mine by Junhui Fu, Guangcai Wen, Bichuan Zhang, Haitao Sun, Rifu Li, Jiaqi Liu

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geeSSEBI: Evaluating Actual Evapotranspiration Estimated with a Google Earth Engine Implementation of S-SEBI by Jerzy Piotr Kabala, Jose Antonio Sobrino, Virginia Crisafulli, Dražen Skoković, Giovanna Battipaglia

“…This paper introduces geeSSEBI, a Google Earth Engine implementation of the S-SEBI (Simplified Surface Energy Balance Index) model, for deriving ET from Landsat data and ERA5-land radiation. …”
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Enhanced thermomechanical fatigue resistance in W10Re alloys: Microstructural and surface engineering approaches by Michael Sommerauer, Benjamin Seligmann, Hannah Gottlieb, Anton Hohenwarter, Jeong-Ha You, Neil Bostrom, Reinhard Pippan, Maximilian Siller, Verena Maier–Kiener

“…This work aimed to investigate the combination of these approaches, by comparing two W10Re alloys with vastly different microstructures, as well as engineered surface conditions of varying scales. …”
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Fracturing effects evaluation and gas water production characteristics analysis at different layers of surface horizontal wells by Mingqiang LI, Chunhui YE, Tengfei CAO, Ke YANG, Zhainan ZHANG, Wenjie LIU

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Influence of natural weak surface on extension of multiple fractures during fracturing of gas extraction horizontal wells by Tao PANG, Zaibing JIANG, Zhengxi WANG, Xiugang LIU, Haozhe LI

“…In view of the difficult problem of strip gas extraction in coal roadways of broken soft and low permeability coal seam, this paper puts forward the technology of segment fracturing and high efficient pre-gas extraction in horizontal wells of strip roof of coal roadways of coal roadways.For balanced gas extraction without blank zone, fracture network construction based on segmented multi-cluster fracturing is the key to technical success.In order to study the propagation patterns of multi-fractures in coal measures strata, the development characteristics of natural weak surface in coal measures strata are analyzed, and the discriminant formula of natural weak surface to multi-fractures propagation patterns is established, the influence of single natural weak surface and multi-natural weak surface on multi-fracture propagation is analyzed by finite element method.The results show that there are a lot of natural weak planes such as fissures, bedding and interfaces in coal seam and roof and floor strata, which affect the propagation of hydraulic fracture.The interaction between fracture and natural weak surface is affected by in-situ stress, induced stress of fracture and stress field of fracture tip.The natural weak surface can induce the initiation and rapid propagation of fractures when the distance between the natural weak surface and the preset fracture is small, while the natural weak surface with small angle can induce the rapid propagation of nearby fractures when the distance is large, when the angle is 90° , the interference between slits is not affected.Under the condition of multi-natural weak surface, the fracture net is easy to form when the stress difference is low, and easy to form a simple single fracture when the stress difference is large, and easy to form the fracture net when the density of natural weak surface is high and the shape is complex, the in-situ stress has little effect on the form of fracture net.The engineering application shows that the hydraulic fracturing in the test well has formed a seam net covering the coal roadways to be driven, and the daily gas production is in the rising stage, and has reached 1708 m3, which has a good prospect of extraction.…”
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Tailoring the surface pore morphology of bioceramic scaffolds through colloidal processing for bone tissue engineering. by Shareen S L Chan, Daniel E Heath, George V Franks

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METHODOLOGICAL BACKGROUND TO EFFICIENT ENGINEERING SYSTEM DESIGN OF SURFACE PLASTIC DEFORMATIONS BY FREE-MOVING INDENTERS by Valery Alexandrovich Lebedev, Roman Alexeyevich Mishchenko

“…The design methodology for the engineering systems of the surface plastic deformation (SPD) by the free-moving indenters is considered. …”
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A surface model of nonlinear, non-steady-state phloem transport by Youcef Mammeri, Damien Sellier

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Global regulations and practices for well integrity management: a review by Marcel Schulz, Mayukh Talukdar, Isabelle Pfander, Greg Lackey, Luisa Röckel, Andrew Wojtanowicz, Frank Schilling, Philipp Blum

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Efficient gas extraction technology via surface wells in goaf areas of deep outburst-prone coal mines by YANG Jidong, TONG Yanjun

“…Taking the 12100 coal mining face of Shoushan No.1 Mine of Henan Pingbao Coal Industry Co., Ltd. as the engineering background, an efficient gas extraction technology via surface wells in goaf areas of deep outburst-prone coal mines was proposed. …”
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Interaction mechanism and development suggestions for the full cycle construction effect of surface horizontal wells in unmined coal mines by Zhainan ZHANG, Ke YANG, Xinzhu HUA, Chunhui YE, Min YE, Wenjie LIU, Xiaolou CHI, Xin LYU

“…To explore the differences in fracturing effects of different levels of ground level wells in unmined coal mines, and to reveal the interaction mechanism of construction effects in various stages of gas control throughout the entire cycle, combined with the construction status of ZJ2−1 and ZJ2−2 wells in Zhujidong Mine, the differences in fracturing effects of each section and level were analyzed from the perspectives of fracturing construction scale, fracturing construction curve, and pressure drop data, and compared and verified with microseismic monitoring results; Analyze the impact of drilling and fracturing effects on gas and water production efficiency, as well as the reasons for production shutdown, reveal the interaction mechanism between the entire cycle of surface horizontal well drilling, fracturing, and drainage engineering, and propose key issues and suggestions for gas control in surface horizontal wells in unmined coal mines. …”
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