Results 71 to 80 of about 871 (212)

Investigation into the effect of the grout properties injected behind the segment on surface settlement in mechanized tunneling

International Journal of Geo-Engineering
Ground surface settlement is one of the inevitable components of shallow excavations in soil environments. It is crucial to predict the amount of ground surface settlement in mechanized tunneling for urban subway construction.
Haniyeh Kouhi, Hamid Chakeri, Mohammad Darbor, Hamed Baghali, Hamid Mousapour   +4 more
doaj   +1 more source

EVALUATION OF THE PREVENTIVE METHOD FOR GROUND SURFACE SETTLEMENT BY EXCAVATION OF SHALLOW TUNNEL IN UNCONSOLIDATED GROUND

Doboku Gakkai Ronbunshu, 1999
都市域においてトンネルを掘削する場合, 重要構造物と交差したり近接することは通例であり, 地表面沈下の問題は避けて通れない重要課題である. 特に, 土被りが浅い未固結地山の場合, 地質による影響を強く受けた特異な非線形的な変位挙動を示す場合が多い. このような状況から, 地表面沈下に対する対応が困難で, 対症療法的な対策を迫られる場合も散見されるが, 本質的には沈下のメカニズムを把握することが重要な課題である. 本論文では, 洪積砂層と盛土層の2つの異なった地山において採用された抑止対策 (掘削工法によるものとしてCD工法とその改良工法であるCRD工法の2例, 補助工法によるもの1例) を例として逆解析を実施し, 地表面沈下のメカニズムおよび各抑止工法に対する効果を明らかにした.
Mitsugi OKUDA, Toshio ABE, Masato SINJI
openaire   +2 more sources

Electrospun Wood‐Derived Biopolymers as Electrodes in Electrochemical Energy Storage Technologies

Advanced Functional Materials, EarlyView.
Electrospinning transforms wood‐derived cellulose and lignin into architecturally defined, binder‐free carbon electrodes with tuneable porosity and functionality. This review shows how fibre design enables decoupled charge and mass transport, enhancing performance across battery systems, while identifying key challenges in spinnability, scalability ...
Michael W. Thielke, Hattie R. Chisnall, Jesus Vazquez Chavez, Ana B. Jorge Sobrido   +3 more
wiley   +1 more source

A Novel Modified Petroresin Particle (MPRP) With Enhanced Oil–Water Selectivity for Cold Production in Heavy Oil Reservoirs

Advanced Functional Materials, EarlyView.
A novel oil–water selective conformance control agent, MPRP, is prepared via hydrophilic grafting and mechanical granulation. MPRP uniformly disperses in water, cohesively expands upon aging, and readily dissolves in the oil phase. During conformance control, it selectively aggregates in water channeling pathways to form effective plugs without ...
Guang Zhao, Dongfang Lv, Chang Liu, Changxu Wu, Yifei Liu, Caili Dai, Huazhou Li   +6 more
wiley   +1 more source

Development of Multifunctional Hierarchically Restructured Antibacterial Neural Interfacing Electrodes via Plasma‐Enhanced Atomic Layer Deposition of Zinc Oxide Thin Films

Advanced Functional Materials, EarlyView.
ABSTRACT Next‐generation implantable neural‐interfacing devices are increasingly constrained by the coupled demands of electrode miniaturization, electrochemical performance, and implantation infection risk. Femtosecond laser–based hierarchical surface restructuring (HSR) technology has emerged as a scalable, manufacturing‐compatible platform for ...
Henna Khosla, Wesley Seche, Kriti Panchal, Steven J. May, Ekaterina Pomerantseva, Jacob Elmer, Tyler Cooper, Matthew J. Urban, Hailey Y. Maurer, Gregory A. Caputo, Jeffrey Hettinger, Shahram Amini, Gang Feng   +12 more
wiley   +1 more source

One‐Step Curcumin‐Mediated Multiphoton Lithography for Bioactive 3D Scaffolds

Advanced Functional Materials, EarlyView.
Curcumin‐mediated multiphoton lithography enables one‐step fabrication of highly architected complex gelatin methacryloyl scaffolds by exploiting curcumin as a multifunctional bioactive photoinitiator. The resulting 3D structures support mesenchymal stem cell adhesion, proliferation, and migration, while exhibiting dual antibacterial activity through ...
Myrto Charitaki, Michalis Stavrou, Chrysanthi Pinelopi Apostolidou, Elmina Kabouraki, David Gray, Anna Mitraki, Anthi Ranella, Maria Farsari   +7 more
wiley   +1 more source

An Electrowetting Pump

Advanced Functional Materials, EarlyView.
A tubular electrowetting pump moves alternating droplets through a millimeter‐wide channel in discrete, reversible steps, functioning as a fluidic stepper motor. With no moving parts and electrodes insulated from the liquid, it delivers silent, accurate flow. Flexibility allows the pump to be woven directly into textiles for wearable, medical, and soft‐
Robert Hennig, Herbert Shea
wiley   +1 more source

Sulfation‐Tunable Peptide‐Glycosaminoglycan Hydrogels for Hematopoietic Stem and Progenitor Cell Expansion

Advanced Functional Materials, EarlyView.
Co‐assembly of rationally designed glycosaminoglycan‐binding peptides with sulfated glycosaminoglycans yields supramolecular hydrogels with tunable mechanics and matrix‐mediated cytokine retention. The glycosaminoglycans thereby act as cofactors, driving a coil‐to‐β‐sheet transition that triggers gelation.
Shirel Veretnik, Prannoy Seth, Maximilian Fusenig, Jens Friedrichs, Nicole Fertala, Passant Atallah, Uwe Freudenberg, Ayala Lampel, Carsten Werner   +8 more
wiley   +1 more source

Theoretical Model for Surface Settlement Induced by Curved Shield Tunneling

工程科学与技术
The primary factors contributing to surface settlement during curved shield tunneling are ground loss and construction load. The asymmetry inherent in curved shield tunneling complicates the prediction of surface settlement.
Yang XU, Wenhao SHI, Yuan WANG, Qianli MA, Jinghong WU   +4 more
doaj  

Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite

Advanced Functional Materials, EarlyView.
The crushing mandible of a soldier termite withstands substantial biting loads despite lacking mineral. Its cuticle is partitioned: convex teeth pair hardness and zinc enrichment with aligned chitin fibers for contact durability, while stiffer concave regions between teeth carry bending loads.
Andrew Tran Nguyen, Patryk Wąsik, Juan Fernando Cucuyame Morales, Marie Kate Palau, Adrian Francisco Duran Ornelas, Phani Saketh Dasika, Jin Hee Kim, Radhika Laxminarayana, Eric Hintsala, Greta Chang, Junzhi Liao, Lizhi Sun, Nathan Lord, Atsushi Arakaki, Paul Bardunias, Pablo Zavattieri, David Kisailus   +16 more
wiley   +1 more source