Results 101 to 110 of about 1,933 (291)

Low‐Temperature in Situ Upgrading of Ultra‐Deep Heavy Oil Using Ni–Ce/MOF–OTf Superacid Catalysts to Enhance Energy Utilization and Sustainability

open access: yesEcoEnergy, EarlyView.
A triflate‐functionalized Ni–Ce/MOF–OTf superacid enables low‐temperature (∼140°C) in situ upgrading of ultra‐deep heavy oil. It reduces viscosity by 92.11% in 12 h, maintains activity over cycles, and delivers 90.25% recovery with a lower carbon footprint by selective bond cleavage. ABSTRACT Ultra‐deep heavy oil is an important unconventional resource,
Li Wang   +5 more
wiley   +1 more source

Etruscan Hellenistic rock-cut tombs with decorated façades [PDF]

open access: yes
cut tombs with decorated façades are studied by relatively few, almost cities, Sovana and Norchia, whose façades, all cut into the bedrock, elaborately imitate - to what extent did the creators of the façades draw from local overall form of façades and ...
Votroubeková, Tatiana
core  

Weak‐Story Mitigation and Drift Redistribution in Moment‐Resisting Frames Using Stepping Rocking Walls

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT This study investigates the seismic response of moment‐resisting frames retrofitted with a stepping rocking wall, with emphasis on weak‐story mitigation and residual drift reduction under both ordinary and pulse‐like ground motions. Nonlinear response‐history analyses are conducted on 9‐story and 20‐story SAC Los Angeles frames.
Mehrdad Aghagholizadeh
wiley   +1 more source

Three views of rock-cut tombs and throne in the western necropolis of Beyköy [PDF]

open access: yes, 2015
Three black and white photographs of rock-cut tombs and throne in the western part of Beyköy necropolis in İhsaniye, Afyon135 film (36×24 mm), black and white ...
Gonnet-Bağana, Hatice
core   +2 more sources

Effects of Wall‐to‐Floor Interactions on Seismic Response of Platform‐Type CLT Buildings

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Platform‐type cross‐laminated timber (CLT) buildings feature discontinuous wall segments supported by CLT floors. In practice, CLT floors are often treated as rigid diaphragm, yet the wall‐to‐floor interactions (WFIs) associated with flexibility of floors remain insufficiently investigated during seismic performance assessment.
Chaoyue Zhang   +3 more
wiley   +1 more source

Visibility and spatial organization in the prehistoric rock-cut tomb necropolis of Menorca

open access: yesVirtual Archaeology Review
This paper presents an intervisibility study applied to a set of necropolises on the island of Menorca. 25funerary complexes have been analysed, each comprising a variable number of funerary units. These complexes include caves from different prehistoric
Sonia Carbonell Pastor
doaj   +1 more source

Korálkové šperky pro onen svět. Předběžná zpráva o souborech z hrobky hodnostáře Nefera (AS 68d) // Beaded jewels for the afterlife. A preliminary report on sets from the tomb of the dignitary Nefer (AS 68d) [PDF]

open access: yesPražské Egyptologické Studie, 2016
Faience beads in the form of jewels, which decorated the bodies of the deceased, represent a regular constituent of the burial equipment of officials, priests and their families in the Old Kingdom period.
Veronika Dulíková
doaj  

Seismic Performance and Vibration‐Based Damage Identification of Two‐Storey Balloon‐Framed CLT Shear Walls

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT While cross‐laminated timber (CLT) is increasingly utilized in lateral force‐resisting systems in mass timber construction, research has predominantly focused on platform‐type construction. Balloon‐type CLT shear wall systems offer distinct structural advantages, notably the elimination of cumulative perpendicular‐to‐grain compression and a ...
Samira Mohammadyzadeh   +3 more
wiley   +1 more source

Demirli Kale (Castle), rock tomb [PDF]

open access: yes, 2015
Black and white image of stairways from Demirli Kale, a Phrygian hill-top castle with a rock-cut room, entrance gate, cisterns and arcosolium graves and rock-cut chamber tombs.90×125 mm, black and white ...
Gonnet-Bağana, Hatice
core   +4 more sources

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