Results 71 to 80 of about 4,807,848 (253)

Arithmetic and geometric mean rates of return in discrete time [PDF]

open access: yes
This memorandum presents some basic equalities and inequalities about rates of return in discrete time, without auto-correlation. The arithmetic and geometric means are discussed.
Arie ten Cate
core  

Mean weight diameter and geometric mean diameter of water stable aggregate in the rhizosphere of R. pseudoacacia colonized by R. irregularis (RI), G. versiforme (GV) or not (CV).

open access: yes, 2016
Significant differences are indicated by different letters above the column (one-way ANOVA with Fisher’s LSD; P = 0.05; n = 3). MWD, mean weight diameter; GMD, geometric mean diameter. Replicate data is from S1 Dataset.
Zhenkun Liu (2606083)   +3 more
core   +1 more source

Distinct Microstructural Characteristic Lengths Defining Notch Fatigue Crack Initiation and Propagation, and Defect Tolerance in Advanced Steels

open access: yesAdvanced Engineering Materials, EarlyView.
Schematic representation of modes of microcrack nucleation, growth and temporary arrestment at different boundaries, with the criteria for crack propagation in three scenarios: (1) large notch, (2) defect/small sharp notch, and (3) long crack. This work revisits and integrates results on the fatigue behavior of advanced bainitic steels (in particular ...
Lucia Morales‐Rivas
wiley   +1 more source

Physico-chemical Properties of Seeds in Valuable Medicinal Species of the Genus Salvia L.

open access: yesJournal of Medicinal Plants, 2014
Background: The seeds of some medicinal plants and their compounds have long been valued for their numerous health benefits. Objective:To investigate some physical and chemical properties of Salvia spp.
M Tavakoli   +6 more
doaj  

Modeling of Soil Aggregate Stability using Support Vector Machines and Multiple Linear Regression

open access: yesمجله آب و خاک, 2016
Introduction: Soil aggregate stability is a key factor in soil resistivity to mechanical stresses, including the impacts of rainfall and surface runoff, and thus to water erosion (Canasveras et al., 2010).
Ali Asghar Besalatpour   +2 more
doaj   +1 more source

Integration of OpenCV‐Based Microscopic Adhesive Volume Measurement Into a Pyiron Workflow for Automated Data Analysis

open access: yesAdvanced Engineering Materials, EarlyView.
Residual adhesive after electrode loading in adhesive‐assisted resistance spot welding is quantified through a traceable experimental‐to‐digital workflow. Chromatic confocal topography provides calibrated surface‐height data, while OpenCV detects the electrode imprint and integrates adhesive height into comparable volume metrics.
Sung‐Min Wi, Jiangdong Zhao
wiley   +1 more source

IMPROVING PERFORMANCE OF FLAT-LINK CHAIN FEEDER IN POULTRY HOUSES [PDF]

open access: yesScientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2019
The experimental work was carried out through 2018 at laboratory of agriculture engineering department, faculty of agriculture Tanta University, Egypt to investigate physical properties of the American soybean seeds and Ambrosia weed were imported to ...
Tarek FOUDA   +3 more
doaj  

USING ALTERNATIVE REPRESENTATIONS OF THE RGB COLOR MODEL TO SEPARATE ERGOT SCLEROTIA (CLAVICEPS PURPUREA) FROM THE IMPORTED WHEAT [PDF]

open access: yesScientific Papers Series : Management, Economic Engineering in Agriculture and Rural Development, 2021
Sclerotium of ergot is hard fungal body which contain toxic alkaloids to human and livestock. These alkaloids include ergotamine, ergovaline, ergocornine, ergocryptine, and ergocristine.
Tarek FOUDA, Amina ALBEBANY
doaj  

Microstructure Modification of Additively Manufactured Mo–9Si–8B by Annealing and Its Effects on High‐Temperature Mechanical Properties

open access: yesAdvanced Engineering Materials, EarlyView.
Postbuild annealing systematically modifies the phase fractions and morphology of EB‐PBF processed Mo–9Si–8B. Quantitative microstructure–property correlations reveal how controlled phase evolution enhances high‐temperature compressive strength and creep resistance.
Christopher Schmidt   +5 more
wiley   +1 more source

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig   +2 more
wiley   +1 more source

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