Results 21 to 30 of about 309,924 (263)

Analysis of content of heavy metals in grass used to feed cattle by Energy Disperse X-Ray Fluorescence Spectroscopy

open access: yesProspectiva, 2015
In this work, we show an easy and practical analytical method to quantify the content of heavy metals in grass used to feed cattle located in areas of high vehicle traffic flow.
William A. Vallejo L
doaj   +1 more source

A New ZVS Nonisolated Bidirectional DC-DC Converter with Minimal Auxiliary Element [PDF]

open access: yesJournal of Intelligent Procedures in Electrical Technology, 2013
In this paper, a new nonisolated bidirectional buck–boost dc–dc converter is introduced. The proposed converter can be operated under ZVS condition and fixed switching frequency regardless of the direction of power flow.
Nasrin Asadi Madiseh, Majid Delshad
doaj  

Using the Embedding Theorem to Solve Interval-Valued Optimization Problems

open access: yesAxioms
The space of all bounded closed intervals cannot form a vector space because the concept of an additive inverse cannot be considered. Therefore, this paper presents an embedding theorem to show that the space of all bounded closed intervals can be ...
Hsien-Chung Wu
doaj   +1 more source

On quasi-ideals of semirings

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1994
Several statements on quasi-ideals of semirings are given in this paper, where these semirings may have an absorbing element O or not. In Section 2 we characterize regular semirings and regular elements of semi-rings using quasi-ideals (cf. Thms.
Christoph Dönges
doaj   +1 more source

Characterizations of minimal elements of upper support with applications in minimizing DC functions

open access: yesOpen Mathematics
In this study, we discuss on the problem of minimizing the differences of two non-positive valued increasing, co-radiant and quasi-concave (ICRQC) functions defined on XX (where XX is a real locally convex topological vector space).
Mirzadeh Somayeh   +2 more
doaj   +1 more source

Fatigue behavior of three thin CAD/CAM all-ceramic crown materials

open access: yesInternational Biomechanics, 2023
The purpose of this study was to study the effect of crown thickness on the fatigue life of CAD/CAM ceramic materials. CAD/CAM ceramic materials for the crown were virtually designed with three thickness designs of (a) ultra-thin occlusal crown average 0.
Khaled Bataineh, Mohammad Al Janaideh
doaj   +1 more source

Minimal 𝐴-sets, infinite orbits, and fixed elements [PDF]

open access: yesBulletin of the American Mathematical Society, 1943
Not ...
openaire   +3 more sources

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

Numerical predictions for the effect of negative Poisson's ratio on thermoelastic properties of triply periodic minimal surface-based composites

open access: yesResults in Materials, 2022
This study investigates the effect of negative Poisson's ratio on thermoelastic properties of triply periodic minimal surfaces (TPMS)-based composites.
Komal Chawla, Raj Kiran
doaj   +1 more source

Health‐Related Social Needs in Children With Sickle Cell Disease Are Associated With Worse Health‐Related Quality of Life

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with sickle cell disease (SCD) face multiple acute and chronic medical complications that may impact their quality of life as reported by patients themselves. Health‐related social needs (HRSNs), such as food and housing insecurity, are common in people with SCD, but the association between HRSNs and patient‐reported ...
Sarah J. Marks   +5 more
wiley   +1 more source

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