Results 71 to 80 of about 5,929 (202)

Three‐Dimensional Analytical Model of a Free‐Standing Square Rocking Column

open access: yesEarthquake Engineering &Structural Dynamics, Volume 55, Issue 8, Page 1710-1727, 10 July 2026.
ABSTRACT A three‐dimensional analytical two‐degree‐of‐freedom (2DOF) model is developed to describe the bounded rocking response of free‐standing rigid square columns subjected to bidirectional seismic excitation. The formulation extends Housner's classical planar theory by deriving the full three‐dimensional equations of motion for a column ...
Dimitra Adamopoulou   +1 more
wiley   +1 more source

Experimental retrofit of an R404A/R23 ultra-low temperature freezer using R448A and electronic expansion valves

open access: yes
The lack of regulations that limit the GWP of refrigerants operating in vapour compression systems with a target temperature below –50°C has caused slower market development. Therefore, limited refrigerants and technologies for ultra-low temperature (ULT)
Udroiu, Cosmin-Mihai   +3 more
core   +1 more source

Sex Ratio, Pregnancy Status, and Blubber Testosterone Concentrations of Humpback Whales (Megaptera novaeangliae) on Foraging Grounds in the Southwestern Atlantic

open access: yes
Marine Mammal Science, Volume 42, Issue 4, October 2026.
Henry W. Slesser   +10 more
wiley   +1 more source

Modelling bedload transport at the network scale in a glacier‐fed Alpine river system

open access: yesEarth Surface Processes and Landforms, Volume 51, Issue 7, July 2026.
We adapted the network‐scale sediment transport and connectivity model D‐CASCADE for Alpine environments and applied it to the Sulden/Solda catchment (Italy). For the first time, we validate the model with continuous bedload measurements at the catchment outlet and evaluate the plausibility of bedload dynamics along the river network with field ...
Felix Pitscheider   +7 more
wiley   +1 more source

Experimental evaluation of low-GWP refrigerants as drop-in alternatives to R23 for ultra-low temperature refrigeration

open access: yes
The transition towards low-GWP refrigerants in ultra-low temperature (ULT) refrigeration is hindered by the absence of regulatory frameworks. Thus, traditionally employed refrigerants, such as R23 or R508A, continue to dominate current usage despite ...
Udroiu, Cosmin-Mihai   +4 more
core   +1 more source

Sopwith Camel Attached to Bar on British Airship R23

open access: yes, 2013
Sopwith Camel attached to bar on British Airship R23. Image displayed (72 dpi JPEG), Master image (600 dpi TIFF)

core  

Characterization of the double deletion mutant of pseudorabies virus --R23

open access: yes, 2014
假性狂犬病毒( Pseudorabies virus; PRV )屬於阿爾伐皰疹 病毒亞科(α-herpesvirinae ),是豬假性狂犬病的病原。 利用遺傳工 程技術,將具有致病力卻與病毒複製無關的基因去除, 是目前開發活毒 疫苗防治假性狂犬病的主要策略。 其中將TK ( Thymidine Kinase ) 基 因不活化,不但不影響病毒的複製 ...
許晉銘   +2 more
core  

R23/R22 Separation and Recovery Using the DIST-PSA Hybrid System

open access: yes, 2016
Trifluoromethane (R23), a ubiquitous byproduct of chlorodifluoromethane (R22) synthesis, is one of the most potential greenhouse gases. The encouraged approach is thermal oxidation to process the vent gas by the clean development mechanism (CDM).
Haiyu Yan (1383660)   +6 more
core   +1 more source

Response to "Comment on Khanna (2023)"

open access: yes, 2023
Roodman (2023) (henceforth R23) re-evaluates Khanna (2023) (henceforth K23). R23 is able to replicate K23's results, highlighting no mistakes in K23's analysis.
Khanna, Gaurav
core  

The Urban/Rural Community Divide Based on a Geo-Economic Perspective: An Analysis of Work Contracts in Slovakia

open access: yesQuaestiones Geographicae
The study analyses over 1.5 million entries from the Slovak Social Insurance Company dataset for 2022. The records of work contracts for insured individuals are categorised by age, type of insurance, place of residence, and workplace, based on ZIP codes.
COLE DAVID   +3 more
doaj   +1 more source

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