Results 21 to 30 of about 156,848 (283)

Experimental study on the seepage characteristics of bituminous coal under the conditions of liquid nitrogen fracturing

Energy Science & Engineering, 2019
In coalbed methane (CBM) exploitation, liquid nitrogen (LN2) fracturing has attracted much attention as a promising and effective means to enhance coal seam permeability.
Shuai Chen, Lei Zhang, Cun Zhang, Mengqian Huang   +3 more
doaj   +1 more source

Connectivity of pores in shale reservoirs and its implications for the development of shale gas: A case study of the Lower Silurian Longmaxi Formation in the southern Sichuan Basin

Natural Gas Industry B, 2020
The unconnected gas-bearing pores in shale gas reservoirs may be transformed into “potential recoverable pores” after large scale hydraulic fracturing.
Haijie Zhang, Yuqiang Jiang, Keming Zhou, Yonghong Fu, Zheng Zhong, Xuemei Zhang, Lin Qi, Zhanlei Wang, Zengzheng Jiang   +8 more
doaj   +1 more source

Freeze-chilling and gas flushing of raw fish fillets [PDF]

, 2003
End of Project ReportFreeze-chilling involves freezing and frozen storage followed by thawing and chilled storage. Trials with whiting and mackerel fillets/portions (Part 1) indicated no difference in odour scores (raw samples) between freeze-chilled and
Uí Mhuircheartaigh, Mary M., Fagan, John, Gormley, Ronan T.   +2 more
core   +1 more source

Factors controlling the mechanical properties degradation and permeability of coal subjected to liquid nitrogen freeze-thaw

Scientific Reports, 2017
Freeze-thaw induced fracturing coal by liquid nitrogen (LN2) injection exerts a significant positive effect on the fracture permeability enhancement of the coal reservoir.
Lei Qin, Cheng Zhai, Shimin Liu, Jizhao Xu   +3 more
doaj   +1 more source

Getting a Grip on the Adhesion Mechanism of Epiphytic Orchids – Evidence From Histology and Cryo-Scanning Electron Microscopy

Frontiers in Forests and Global Change, 2021
Plants and animals evolve different attachment structures and strategies for reversible or permanent adhesion to different substrate types. For vascular epiphytes, having the ability to permanently attach to their host plants is essential for ...
Jessica Y. L. Tay, Gerhard Zotz, Gerhard Zotz, Stanislav N. Gorb, Helena J. R. Einzmann   +4 more
doaj   +1 more source

Methods of preparing flower stem samples for scanning electron microscopy

Ornamental Horticulture, 2015
Brazil has great capacity for expansion in the floriculture sector. Studies on postharvest cut flowers contribute to development of the sector, helping to maintain the quality of domestic production.
Poliana Cristina Spricigo, Jéssica Prada Trento, Joana Dias Bresolin, Viviane Faria Soares, Viviane Faria Soares, Luiz Francisco De Mattêo Ferraz, Marcos David Ferreira   +6 more
doaj   +1 more source

Spontaneous Cyclic Levitation of Glycerol-Water Droplets at Low Pressures. [PDF]

Adv Sci (Weinh)
Under low pressure, a minute glycerol addition transforms the chaotic dynamics of freezing water droplets into cyclic levitation. Freeze‐concentration preserves liquid pathways that relax expansion‐induced stress, while freezing point depression weakens asymmetric vaporization recoil.
Xu C, Hua R, Ma W, Chu F, Liang D, Li X, Zhang Q, Dong Y, Ma X, Yan X, Yao S.   +10 more
europepmc   +2 more sources

Investigation of Fracture Evolution and Failure Characteristics of Rocks under High-Temperature Liquid Nitrogen Interaction

Geofluids, 2023
The utilization of liquid nitrogen as a sustainable and water-free fracturing medium exhibits immense promise in engineering applications. In this investigation, Brazilian split tests and acoustic emission tests were conducted to explore the impact of ...
Linchao Wang, Yi Xue, Xuyang Shi, Zhihao Zhang, Xue Li, Lin Zhu, Ruifu Liu, Lin Sun, Caifang Wu, Songbao Feng   +9 more
doaj   +1 more source

Pore Damage Properties and Permeability Change of Coal Caused by Freeze-Thaw Action of Liquid Nitrogen

Advances in Civil Engineering, 2018
A laboratory test was conducted to investigate the effect of the freeze-thaw action of liquid nitrogen on the pore structure and permeability of coal rock. First, coal rock samples with similar sound velocities and permeabilities were selected.
Bo Li, Lulu Zhang, Jianping Wei, Yongjie Ren   +3 more
doaj   +1 more source

Sources and levels of ambient ocean sound near the Antarctic Peninsula. [PDF]

PLoS ONE, 2015
Arrays of hydrophones were deployed within the Bransfield Strait and Scotia Sea (Antarctic Peninsula region) from 2005 to 2009 to record ambient ocean sound at frequencies of up to 125 and 500 Hz.
Robert P Dziak, DelWayne R Bohnenstiehl, Kathleen M Stafford, Haruyoshi Matsumoto, Minkyu Park, Won Sang Lee, Matt J Fowler, Tai-Kwan Lau, Joseph H Haxel, David K Mellinger   +9 more
doaj   +1 more source