Results 201 to 210 of about 105,180 (314)

Habitability at the edge of the redox boundary during the Permian-Triassic mass extinction. [PDF]

Sci Rep
Bagherpour B, Ardakani OH, Herwartz D, Grasby SE.   +3 more
europepmc   +1 more source

Nonlinear analysis of flat post‐tensioned concrete slab–edge column connections

Structural Concrete, EarlyView.
Abstract This study presents nonlinear finite element analyses to investigate the punching shear behavior of unbonded post‐tensioned concrete flat slabs at slab‐edge column connections. A parametric analysis was conducted to evaluate the influence of four critical parameters on the punching shear resistance: the distribution of prestressing tendons ...
Igor Gonçalves, Ricardo Randi, Orlando M. Almeida, Elyson A. P. Liberati, Leandro M. Trautwein   +4 more
wiley   +1 more source

<i>Cyrtomium lacrimipinnum</i> (Dryopteridaceae), a new sexually reproducing fern from Phong Nha-Ke Bang National Park, Vietnam. [PDF]

PhytoKeys
Yoneoka K, Fujiwara T, Dang VS, Pham QT, Souladeth P, Sengthong A, Masuda R, Yamamoto T, Tanaka N, Tagane S.   +9 more
europepmc   +1 more source

Evaluations of the effectiveness of the near‐surface mounted steel materials in strengthening short RC wall‐like columns with openings

Structural Concrete, EarlyView.
Abstract In practice, reinforced concrete (RC) wall‐like columns often have openings to facilitate building services, which creates stress concentrations around the opening, resulting in the weakening of their load‐carrying capacity. This study proposes innovative strengthening methods using near‐surface mounted (NSM) incorporating steel materials to ...
Ahmed Hamoda, Mizan Ahmed, Mohamed Ghalla, Ahmad G. Saad, Aref A. Abadel   +4 more
wiley   +1 more source

Acid Dissolution of Magnesian-Calcite Stromatolites from Lagoa Salgada: An Experimental Evaluation Using X‑ray Microtomography. [PDF]

ACS Omega
Serra VFH, da Silva JP, da Cunha ACS, Neyra JR, Lucas CRDS, da Silva DNN, Aum PTP.   +6 more
europepmc   +1 more source

Performance enhancement of reinforced concrete columns using stainless steel and galvanized steel plates: Experimental and numerical investigation

Structural Concrete, EarlyView.
Abstract This study introduces an innovative approach to strengthening defected reinforced concrete (RC) columns using externally bonded stainless steel and galvanized steel plates. Unlike conventional strengthening methods, this technique replaces traditional transverse stirrups with steel sheets, providing enhanced confinement and ductility.
Ahmed Hamoda, Khaled Sennah, Ramy I. Shahin, Aref A. Abadel, Mizan Ahmed, Mohamed Ghalla   +5 more
wiley   +1 more source

Behavior of manufactured sand and recycled coarse aggregate concrete‐filled steel tubular stub columns with circular section

Structural Concrete, EarlyView.
Abstract Accelerated urbanization has intensified environmental concerns due to excessive natural resource consumption and construction waste generation. Circular concrete‐filled steel tube (CFST) columns incorporating manufactured sand recycled coarse aggregate (MS‐RCA) concrete have emerged as an innovative composite element offering notable ...
Minsheng Guan, Qi Chen, Gang Wang, Aiguo Xiong, Ying Wang, Le Li, Anne W. M. Ng, Qing Quan Liang   +7 more
wiley   +1 more source

Characterization of particulate depositions collected from archeological monuments in Greece and Cyprus using multiple analytical techniques. [PDF]

Environ Sci Pollut Res Int
Gkraikou T, Kozari A, Vouvoudi E, Papadopoulou L, Melfos V, Santarelli B, Samara C.   +6 more
europepmc   +1 more source

Optimizing the embodied carbon of the product stage of reinforced concrete columns

Structural Concrete, EarlyView.
Abstract The construction sector faces urgent sustainability challenges. This study quantifies the potential for reducing embodied carbon in reinforced concrete columns by optimizing concrete strength and reinforcement ratios. The interplay between concrete compressive strength (20–90 MPa), reinforcement percentages (0.2%–2.0%), and embodied carbon ...
Robine Calixte, Jean Michel Torrenti, Mélanie Chatenet   +2 more
wiley   +1 more source

Notes on Sarawak (Malaysian Borneo) land snails (Mollusca, Gastropoda, Pulmonata): Thirteen new species, a new genus and a first record of an introduced species. [PDF]

Biodivers Data J
Vermeulen JJ, Richard CY, Marzuki ME, Khalik MZ.   +3 more
europepmc   +1 more source