Results 41 to 50 of about 279,095 (244)
Advanced Science, EarlyView.A reversible five‐phase topological cycle is achieved in a minimalist cobalt formate metal–organic framework. The amorphous phase functions as a programmable reactive hub, selectively reconstructing into four distinct crystalline architectures through cationic templates, humidity, or CO2.
Zhiyu Tao +6 more
wiley +1 more source
Jixie chuandong, 1997 This paper analyzes the profile curve of cycloid nutation gear by using the spherical trigonometry theory,derives relative profile equation,and presents the basic parameters and main measurement.All of this are the necessary basis for cycloid nutation ...
何韶君, 赵清
doaj
Seeing the Chemistry of Biomolecular Condensates: In Situ Mapping of Composition and Water Content
Advanced Science, EarlyView.Raman hyperspectral imaging combined with spectral phasor analysis enables a label‐free quantification of proteins, polymers and water density within individual biomolecular condensates. By transforming complex vibrational fingerprints into intuitive compositional maps, the approach reveals the high water content and structural heterogeneity of ...
E. Sabri +3 more
wiley +1 more source
Sonocatalytic carbon dioxide reduction for syngas production over surface‐roughened CuxO catalyst
AIChE Journal, EarlyView.Abstract The transition to a carbon‐circular economy requires efficient technologies for converting CO2 into value‐added chemical feedstocks. Sonocatalytic CO2 conversion has recently emerged as a compelling approach to drive this conversion. Here, we report a surface‐roughened CuxO catalyst for sonocatalytic CO2 reduction in aqueous media, achieving a
Dong Xia +5 more
wiley +1 more source
Al-Ahkam, 2016 There are at least three ways to determine the position or the coordinates of a spot on the Earth's surface. They are: istiwa' sticks, Global Positioning System (GPS), and Google Earth.
Anisah Budiwati
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THREE DIMEI\SIONAL INTERSECTIOIN SBY AhIGULAR OBSERVATIONS
Journal of EngineeringThe research introduces a new mathematical model for computing the position of points in space (X, Y, Z) by the intersection of inclined angles derived from the measured horizontal and vertical angles using spherical trigonometry principles with the aid
Bashar Saleem. Al joboory
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AI &Innovation, EarlyView.ABSTRACT Maintaining an effective balance between exploration and exploitation is essential during optimization processes, from mathematical functions to more complex problems such as constrained engineering design optimization, particularly when addressing highly nonlinear issues with numerous local optima and strict feasibility requirements.
Enrique Lizárraga +3 more
wiley +1 more source
Detection of a crank in Spherical Stephenson-III Six-bar Mechanism
工程科学与技术, 2013 :It is a critical issue to identify the existence of a crank of a multiple loop mechanism, which is most fundamental and difficult problem in the process of mechanism analysis and synthesis.
Sun Yan
doaj
Algebra and Trigonometry (OpenStax) [PDF]
, 2015 1. Prerequisites2. Equations and Inequalities3. Functions4. Linear Functions5. Polynomial and Rational Functions6. Exponential and Logarithmic Functions7. The Unit Circle: Sine and Cosine Functions8. Periodic Functions9.
Abramson, Jay P.
core +1 more source
A treatise on plane and spherical trigonometry [PDF]
Journal of the Franklin Institute8th ed. ; 256 p.
openaire +1 more source