Results 131 to 140 of about 9,012 (266)

The impact of forced closure on proppant distribution of hydraulic fracturing in shale formations

Deep Underground Science and Engineering, EarlyView.
Research findings demonstrate that implementing forced closure within shale formations can remarkably mitigate proppant settlement, concurrently increasing the effective propped surface area from 29.74% to 38.68%. Abstract Forced closure is widely used in conventional oil and gas reservoirs to promote uniform proppant placement.
Tongxuan Gu, Hanyi Wang, Quan Gan, Shuang Zheng   +3 more
wiley   +1 more source

Yellowstone plume drives drainage reorganization in the early Miocene. [PDF]

Sci Adv
Gerritsen D, Gilder SA, Chen YW, Wack MR.   +3 more
europepmc   +1 more source

Advancing mine pillar design: Evaluating traditional methods and integrating AI for enhanced stability of pillars in the Great Dyke, Zimbabwe

Deep Underground Science and Engineering, EarlyView.
B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza, Hendrik Grobler, Peter Apata Olubambi, Moshood Onifade, Manoj Khandelwal   +4 more
wiley   +1 more source

Integrated airborne gamma-ray spectrometry, aeromagnetic analysis, and radiological assessment of sedimentary rocks, West Qasr El-Farafra area, Egypt. [PDF]

Sci Rep
El-Hawary AM, El Salam HFA, El Rhman RMA, Hanfi MY.   +3 more
europepmc   +1 more source

Fracture evolution of a thick soft protection layer and the water inrush mechanism in overburden under longwall mining

Deep Underground Science and Engineering, EarlyView.
Through shear–tensile creep tests and viscoelastic modeling, the fracture evolution of thick soft protective layers is clarified. Results show thickness‐dependent rheological failure modes that govern four types of roof water inrush, providing a mechanism‐based framework for hazard prediction and control. Abstract In the Jurassic coal‐bearing strata of
Mengnan Liu, Wei Qiao, Xianggang Cheng, Xiangsheng Meng, Peichao Feng   +4 more
wiley   +1 more source

Bottom Grinding Increases the Phototrophic Bacteria While Reduces Bacterial Community Stability in Sea Cucumber Cultural Ponds. [PDF]

Environ Microbiol Rep
Gao S, Zhao W, Jiang J, Guan X, Pan Y, Zhao Z, Wang B, Xiao Y, Zhang G, Zhao D, Mi R, Zhou Z.   +11 more
europepmc   +1 more source

Mechanistic insights across curing regimes for enzymatic and biopolymer‐optimized reinforcement in rock masses

Deep Underground Science and Engineering, EarlyView.
This study examines the effects of curing temperature on the mechanical behavior of underground rock masses treated with enzyme‐induced calcite precipitation (EICP) and an innovative biopolymer‐modified EICP (BP‐EICP). Abstract Biocementation is an innovative and sustainable technique for reinforcing weak and weathered rock masses in natural and ...
Mary C. Ngoma, Oladoyin Kolawole
wiley   +1 more source

Impact of the 2024 flood event on trace elements contamination in floodplain sediments at the mouth of the Nysa Kłodzka river into the Odra valley. [PDF]

Environ Geochem Health
Kałmykow-Piwińska A, Witkowska K.
europepmc   +1 more source

Research progress and current status of dynamic wave propagation characteristics in rock mass: A review

Deep Underground Science and Engineering, EarlyView.
This review elucidates the velocity–dispersion–attenuation coupling mechanisms of wave propagation in rock masses, compares six representative models, and reveals how pressure, temperature, mineral composition, and anisotropy jointly control dynamic responses in complex geological media.
Jiajun Shu, Tao Li, Ruiqi Yuan, Yue Li, Bingni Wu, Bo Liu, Zhengding Deng, Galindo Rubén, Fausto Molina‐Gómez   +8 more
wiley   +1 more source

Source Apportionment of Lead in the San Juan Watershed (USA): Influences from Weathering of Mineralized and Sedimentary Deposits. [PDF]

ACS Environ Au
Wilkin RT, Noerpel MR, Rovero M, Costantino L, Bowen I, Larrick C.   +5 more
europepmc   +1 more source