Assessing the impacts of chemical mixtures in the environment is challenging largely because of high variation: diverse sources and constituents; routes of environmental exposure; taxa-specific sensitivities. This complexity and uncertainty leads to concerns that current prospective risk assessment (RA) methods are insufficient for appropriate environmental protection. Likewise, there is scope ...

Background: Obesity is likewise becoming more prevalent in patients with lumbar spinal canal stenosis, but few studies have examined relationships between obesity levels and surgical outcomes for this condition. The purpose of the present study is to determine the influence of body-mass index (BMI) on outcomes of surgery for lumbar spinal canal

Microbiological analyses of chicken eggs in Recife and Salvador have shown a high occurrence of Salmonella in the egg shells and yolks. Likewise, the occurrence of Salmonella plus coagulase-positive staphylococci in Coalho cheese reached alarming levels. The data revealed a significant risk of infections and intoxications from consuming these foods in the cities.

Although block copolymer motifs have received considerable attention as supramolecular templates for inorganic nanoparticles, experimental observations of a nanostructured diblock copolymer containing inorganic nanoparticles-supported by theoretical trends predicted from a hybrid self-consistent field/density functional theory-confirm that nanoparticle size and selectivity can likewise stabiliz...

We study the asymptotic probability that a random composition of an integer n is gap-free, that is, that the sizes of parts in the composition form an interval. We show that this problem is closely related to the study of the probability that a sample of independent, identically distributed random variables with a geometric distribution is likewise gap-free.

In ciliates, small RNAs have been shown to target foreign sequences for silencing via elimination from the somatic genome. Fang et al. now reveal a set of Piwi-interacting RNAs (piRNAs) in Oxytricha trifallax that likewise enable genomic self versus nonself discrimination, this time by specifying self sequences for genome retention.

Postpartum SUI can present with a spectrum of severity in symptoms, exam indings, and proposed etiologies. Likewise, the treatment can range from conservative to de initive surgical management. Two case reports are presented and compared in their differing presentations and treatment plans for postpartum SUI.

Neurological disorders disrupt the equilibrium within the brain and spinal cord ecosystems. Ecology reuses, recycles, and reduces to help maintain the balance across ecosystems. Likewise, neuroprosthetics can help the brain help itself with ecoprosthetic designs that integrate the principles of the "three 'R's."

We study the probability that a sample of independent, identically distributed random variables with a geometric distribution is gap-free, that is, that the sizes of the variables in the sample form an interval. We indicate that this problem is closely related to the asymptotic probability that a random composition of an integer n is likewise gap-free.

An inventory model for two warehouses with different deterioration rates is developed. Demand is considered as linear function of time. Holding cost is time dependent. Shortages are allowed and completely backlogged. To support the model numerical case is given. Affectability investigation is likewise done for parameters.