Abstract Background The bio-pesticide abamectin has been used to control a large variety of insects, including Diptera species, attributed its high toxicity with virtually no residual effects on treated crops. Its low effect ensures the survival natural enemies and other non-target organisms. Imidacloprid is also widely for insect pest due potency selectivity in comparison mammals. On hand, dia...

With the purpose of assessing the damages to N95 respirator masks over time and to estimate their expiration after use in clinical practice, this study was based on the descriptive analysis of N95 cone-shaped masks collected by nursing assistants after one, five, 15, and 30 consecutive days of use. Personal identification marks were founds in every respirator already on the first day of use. Fr...

BACKGROUND In a recent meta-analysis, human milk feeding of low birth-weight (LBW) infants was associated with a 5.2 point improvement in IQ tests. However, in the studies in this meta-analysis, feeding regimens were used (unfortified human milk, term formula) that no longer represent recommended practice. OBJECTIVE To compare the growth, in-hospital feeding tolerance, morbidity, and developm...

Zero-temperature density functional theory (DFT), density functional theory molecular dynamics (DFT-MD), and classical molecular dynamics using polarizable force fields (PFF-MD) are employed to evaluate the influence of Li+ on the structure, transport, and electrochemical stability of three potential ionic liquid electrolytes: N -methyl-N -butylpyrrolidinium bis(trifluoromethanesulfonyl)imide (...

To come to some consensus on the state of knowledge and opinion regarding the definitions of patellofemoral stability and instability, the clinical evaluation of patients with suspected patellar instability, treatment recommendations, and future directions of study on this subject, a workshop was jointly funded by the American Orthopedic Society for Sports Medicine (AOSSM) and the Patellofemora...

we introduce center-like subsets z*(r,f), z**(r,f) and z1(r,f), where r is a ring and f is a map from r to r. for f a derivation or a non-identity epimorphism and r a suitably-chosen prime or semiprime ring, we prove that these sets coincide with the center of r.

for an arbitrary ring $r$, the zero-divisor graph of $r$, denoted by $gamma (r)$, is an undirected simple graph that its vertices are all nonzero zero-divisors of $r$ in which any two vertices $x$ and $y$ are adjacent if and only if either $xy=0$ or $yx=0$. it is well-known that for any commutative ring $r$, $gamma (r) cong gamma (t(r))$ where $t(r)$ is the (total) quotient ring of $r$. in this...

let r be a prime ring with extended centroid c, h a generalized derivation of r and n ⩾ 1 a xed integer. in this paper we study the situations: (1) if (h(xy))n = (h(x))n(h(y))n for all x; y 2 r; (2) obtain some related result in case r is a noncommutative banach algebra and h is continuous or spectrally bounded.

a ring $r$ is a strongly clean ring if every element in $r$ is the sum of an idempotent and a unit that commutate. we construct some classes of strongly clean rings which have stable range one. it is shown that such cleanness of $2 imes 2$ matrices over commutative local rings is completely determined in terms of solvability of quadratic equations.