Results 31 to 40 of about 485,317 (263)

On equivalence of pairs of matrices, which determinants are primes powers, over quadratic Euclidean rings

open access: yesKarpatsʹkì Matematičnì Publìkacìï, 2013
{We establish that a pair of matrices, whichdeterminants are primes powers, can be reduced over quadraticEuclidean ring $mathbb{K}=mathbb{Z}[sqrt{k}]$ to theirtriangular forms with invariant factors on a main diagonal byusing the common transformation ...
N. B. Ladzoryshyn
doaj   +3 more sources

Effect of Incident Angle of Wear-Ring Clearance on Pressure Pulsation and Vibration Performance of Centrifugal Pump

open access: yesFrontiers in Energy Research, 2022
A wear-ring is an important part of the centrifugal pump. The leakage flow in the wear-ring clearance and main flow at the impeller inlet form crossed mixed flows perpendicular to each other.
XiaoQi Jia   +4 more
doaj   +1 more source

Prevalence of 21 Physician‐Defined Severe Toxicities Following Childhood Acute Lymphoblastic Leukemia Treatment: Australian Retrospective Cohort Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Acute lymphoblastic leukemia (ALL) is the most common pediatric cancer, with an overall survival now surpassing 90% in developed countries. However, treatments are not without adverse effects. In this study, we apply the severe toxicity‐free survival (STFS) framework to determine the prevalence of 21 physician‐defined severe ...
Lane Collier   +10 more
wiley   +1 more source

Some Results on AWN-injective Rings

open access: yesNTU Journal of Pure Sciences
A concept of AWN-injective ring is defined by [1], that is, for any   there exists  and an Y-sub module  of  (  is aright -module) such that  and  as left S-module with S=End(u ). If  is AWN-injective module, then we call  aright AWN-injective ring.
Hazim Talat Hazim   +2 more
doaj   +1 more source

Effects of molecule force on free vibration for a micro electromagnetic harmonic drive system

open access: yesMechanics & Industry, 2021
In this paper, a micro electromagnetic harmonic drive system is proposed. Considering Van der Waals force, dynamics equation of the flexible ring for the micro drive system is deduced and resolved.
Zhao Dan, Xu Lizhong, Fu Yuming
doaj   +1 more source

Sustained Therapeutic Efficacy of Intravenous Plasminogen Concentrate in Pediatric Patients With Type 1 Plasminogen Deficiency: An Analysis of Dosing Parameters and Clinical Outcomes

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Type 1 plasminogen deficiency (PLGD‐1) is an ultra‐rare autosomal recessive disorder caused by variants in the PLG gene and affects approximately 1.6 individuals per million. The condition is characterized by decreased plasminogen levels and impaired function, resulting in fibrin‐rich lesions on mucous membranes throughout the body.
Charles Nakar   +7 more
wiley   +1 more source

Semicommutative and Armendariz Matrix Rings

open access: yesAxioms
In this paper, we construct some interesting high-order upper triangular matrix rings, which have semicommutative and Armendariz properties. Also, the relatively maximality of these rings as subrings of certain matrix rings is considered.
Gang Yang
doaj   +1 more source

Long-Term Impacts of Defoliator Outbreaks on Larch Xylem Structure and Tree-Ring Biomass

open access: yesFrontiers in Plant Science, 2020
Defoliator insects are a major disturbance agent in many forests worldwide. During outbreaks, they can strongly reduce photosynthetic carbon uptake and impact tree growth.
Daniele Castagneri   +6 more
doaj   +1 more source

Leukemia and Exposure to Potential Benzene Sources in Children From the Mexico City Metropolitan Area, 2010–2021: A Geospatial Analysis

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Leukemia is the most common childhood cancer in Mexico, and acute lymphoblastic leukemia (ALL) is the most frequent subtype. Exposure to high concentrations of benzene has been associated with ALL incidence, particularly in urban areas. This study evaluated the relationship between distance to benzene emission sources and the number
Orlando Rivera Zurita   +5 more
wiley   +1 more source

ON NIL-SYMMETRIC RINGS AND MODULES SKEWED BY RING ENDOMORPHISM

open access: yesScience Journal of University of Zakho
The symmetric property plays an important role in non-commutative ring theory and module theory.  In this paper, we study the symmetric property with one element of the ring  and two nilpotent elements of  skewed by ring endomorphism  on rings ...
Ibrahim Mustafa, Chnar Abdulkareem Ahmed
doaj   +1 more source

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