THE USE OF DIRECT ANALYSIS METHOD FOR YUJIAPU TRAFFIC HUBS

2018 ◽  
Keyword(s):  
Direct Analysis ◽  
Analysis Method

Drug screening method development for paper spray coupled to a triple quadrupole mass spectrometer

2017 ◽  
Vol 9 (34) ◽  
pp. 5037-5043 ◽  
Author(s):  
Rachel Jett ◽  
Christine Skaggs ◽  
Nicholas E. Manicke
Keyword(s):  
Mass Spectrometry ◽  
Drug Screening ◽  
Method Development ◽  
Screening Method ◽  
Direct Analysis ◽  
Triple Quadrupole ◽  
Analysis Method ◽  
Quadrupole Mass ◽  
Triple Quadrupole Mass Spectrometer ◽  
Paper Spray

Paper spray mass spectrometry is a direct analysis method in which compounds are extracted and ionized from biofluids dried on paper.

Interface of the Direct Analysis Method and Seismic Design

2009 ◽  
Author(s):  
Taichiro Okazaki ◽  
Mathew Parkolap ◽  
Larry A. Fahnestock
Keyword(s):  
Seismic Design ◽  
Direct Analysis ◽  
Analysis Method

scholarly journals Direct analysis method for probabilistic fracture mechanics

1996 ◽  
Vol 160 (3) ◽  
pp. 347-362 ◽  
Author(s):  
Hiroshi Akiba ◽  
Shinobu Yoshimura ◽  
Genki Yagawa
Keyword(s):  
Fracture Mechanics ◽  
Direct Analysis ◽  
Analysis Method ◽  
Probabilistic Fracture Mechanics

scholarly journals Analysis Of The Effect Of Bending Strength On Scaffolding System With Direct Analysis Method

2021 ◽  
Vol 12 (2) ◽  
pp. 65-68
Author(s):  
Michael Talim
Keyword(s):  
Compressive Strength ◽  
Bending Strength ◽  
Steel Structures ◽  
Direct Analysis ◽  
Iteration Step ◽  
Analysis Method ◽  
Inelastic Analysis ◽  
Non Linear ◽  
Maximum Compressive Strength ◽  
The Right

Steel scaffolding is a very important component in formwork work to support further work. The purpose of this analysis is to review the maximum compressive strength that occurs in 3-story scaffolding before buckling occurs using the direct analysis method (DAM). The design of steel structures, which are generally slender, requires stability analysis. The result is influenced by imperfections (non-linear geometry) and inelastic conditions (non-linear material). In this final project, we use second-order inelastic analysis based on direct analysis method. The 3-level scaffolding model was analyzed using beam elements in the SAP2000 program with 6 variations of notional loads applied to the weak axis direction of the scaffolding pipe.The lowest compressive strength on 3-story scaffolding before buckling occurs is 18.24 kN with horizontal notional loads to the right on the first level scaffolding, left on the second level scaffolding and to the right on the 3rd level scaffolding. The results of the analysis show that the maximum compressive strength obtained results in a large displacement drastically in the iteration step. By using the analysis on the DAM method, the results obtained are more effective.

scholarly journals CONSIDERATIONS ON THE DIFFUSE SEISMICITY ASSUMPTION

2015 ◽  
Vol 12 (2) ◽  
Author(s):  
Jorge Daniel Riera ◽  
Ignacio Iturrioz
Keyword(s):  
Steel Structures ◽  
Direct Analysis ◽  
Second Order ◽  
Effective Length ◽  
Order Effects ◽  
Analysis Method ◽  
Order Analysis ◽  
3D Space ◽  
Effective Length Method ◽  
Diffuse Seismicity

Second-order effects were historically included by the effective length method (K concept). All the studies about that methodology have been developed in frame plane, with regular rectangular frames. The new way to include those effects is the use of second-order analysis, direct analysis method or alternative simplified options. This methodology was included in ANSI AISC360 in the 2005 version and in the 2010 version. As before, the studies already developed for DAM analysis are in plane. In this paper, the K concept is revisited by numerical analysis, and extended to the 3D space. Using models of symmetric and non-symmetric industrial steel structures in plane, 3D stability analyses were developed, and the results were compared with plane behavior. Several conclusions and recommendations were exposed, resulting from the analyzed models. Keywords: Second-order analyses, steel structures, irregular 3D frames.

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