95 research outputs found
Photolytic and Catalytic Destruction of Organic Waste Water Pollutants
The system: water supply source β potable and industrial water β wastewater β sewage treatment β water supply source is necessary for water supply and efficient utilization of water resources. Up-to-date technologies of waste water biological treatment require for special microorganisms, which are technologically complex and expensive but unable to solve all the problems. Application of photolytic and catalytically-oxidizing destruction is quite promising. However, the most reagents are strong oxidizers in catalytic oxidation of organic substances and can initiate toxic substance generation. Methodic and scientific approaches to assess bread making industry influence on the environment have been developed in this paper in order to support forecasting and taking technological decisions concerning reduction of this influence. Destructive methods have been tested: ultra violet irradiation and catalytic oxidation for extraction of organic compounds from waste water by natural reagents
The electromagnetic effects in decay
The final state interaction of pions in decay allows one to obtain
the value of the isospin and angular momentum zero scattering length
.We take into account the electromagnetic interaction of pions and
isospin symmetry breaking effects caused by different masses of neutral and
charged pions and estimate the impact of these effects on the procedure of
scattering length extraction from decay.Comment: 8 pages,1 figur
E-Beam Induced Micropattern Generation and Amorphization of L-Cysteine-Functionalized Graphene Oxide Nano-composites
The evolution of dynamic processes in graphene-family materials are of great
interest for both scientific purposes and technical applications. Scanning
electron microscopy and transmission electron microscopy outstand among the
techniques that allow both observing and controlling such dynamic processes in
real time. On the other hand, functionalized graphene oxide emerges as a
favorable candidate from graphene-family materials for such an investigation
due to its distinctive properties, that encompass a large surface area, robust
thermal stability, and noteworthy electrical and mechanical properties after
its reduction. Here, we report on studies of surface structure and adsorption
dynamics of L-Cysteine on electrochemically exfoliated graphene oxides basal
plane. We show that electron beam irradiation prompts an amorphization of
functionalized graphene oxide along with the formation of micropatterns of
controlled geometry composed of L-Cysteine-Graphene oxide nanostructures. The
controlled growth and predetermined arrangement of micropatterns as well as
controlled structure disorder induced by e beam amorphization, in its turn
potentially offering tailored properties and functionalities paving the way for
potential applications in nanotechnology, sensor development, and surface
engineering. Our findings demonstrate that graphene oxide can cover L-Cysteine
in such a way to provide a control on the positioning of emerging
microstructures about 10-20 um in diameter. Besides, Raman and SAED measurement
analyses yield above 50% amorphization in a material. The results of our
studies demonstrate that such a technique enables the direct creation of
micropatterns of L-Cysteine-Graphene oxide eliminating the need for complicated
mask patterning procedures
The isospin symmetry breaking effects in decays
The Fermi-Watson theorem is generalized to the case of two coupled channels
with different masses and applied to final state interaction in
decays. The impact of considered effect on the phase of the scattering
is estimated and shown that it can be crucial for scattering lengths extraction
from experimental data on decays
Longitudinal relationships between caloric expenditure and gray matter in the cardiovascular health study
Background: Physical activity (PA) can be neuroprotective and reduce the risk for Alzheimerβs disease (AD). In assessing physical activity, caloric expenditure is a proxy marker reflecting the sum total of multiple physical activity types conducted by an individual. Objective:To assess caloric expenditure, as a proxy marker of PA, as a predictive measure of gray matter (GM) volumes in the normal and cognitively impaired elderly persons. Methods: All subjects in this study were recruited from the Institutional Review Board approved Cardiovascular Health Study (CHS), a multisite population-based longitudinal study in persons aged 65 and older. We analyzed a sub-sample of CHS participants 876 subjects (mean age 78.3, 57.5% F, 42.5% M) who had i) energy output assessed as kilocalories (kcal) per week using the standardized Minnesota Leisure-Time Activities questionnaire, ii) cognitive assessments for clinical classification of normal cognition, mild cognitive impairment (MCI), and AD, and iii) volumetric MR imaging of the brain. Voxel-based morphometry modeled the relationship between kcal/week and GM volumes while accounting for standard covariates including head size, age, sex, white matter hyperintensity lesions, MCI or AD status, and site. Multiple comparisons were controlled using a False Discovery Rate of 5 percent. Results: Higher energy output, from a variety of physical activity types, was associated with larger GM volumes in frontal, temporal, and parietal lobes, as well as hippocampus, thalamus, and basal ganglia. High levels of caloric expenditure moderated neurodegeneration-associated volume loss in the precuneus, posterior cingulate, and cerebellar vermis. Conclusion:Increasing energy output from a variety of physical activities is related to larger gray matter volumes in the elderly, regardless of cognitive status.Cyrus A. Raji, David A. Merrill, Harris Eyre, Sravya Mallam, Nare Torosyan, Kirk I. Erickson, Oscar L. Lopez , James T. Becker, Owen T. Carmichael, H. Michael Gach, Paul M. Thompson, W.T. Longstreth, Jr. and Lewis H. Kulle
Propagation of Magnetic Fields from Electrical Domestic Appliances
The article presents a research into propagation of magnetic fields from electrical domestic devices. A safe distance at which magnetic induction does not exceed the background level is determined for each type of devices. It is proved that there are two stages of increasing magnetic induction as the distance from the source increases. At the first stage magnetic induction rises and electromagnetic field is formed. At the second stage exponential decrease of magnetic field induction takes place. Mathematical regularities of propagation of magnetic field from electrical domestic devices are experimentally educed
Acid-Base Properties Of Glass Substrate And SiO[2]-Bi[2]O[3]Thin-Film Systems Obtained On It
The article describes an experimental research as a result of which SiO[2]βBi[2]O[3] films have been synthesized of film-forming solutions based on tetraethoxysilane and bismuth nitrate (III). Acid-base properties of a glass substrate and SiO[2]βBi[2]O[3] films obtained on it have been studied. The dependency of physical and chemical properties of SiO[2]βBi[2]O[3] composites on their percentage composition have been revealed
The activities of drug inactive ingredients on biological targets
Excipients, considered "inactive ingredients," are a major component of formulated drugs and play key roles in their pharmacokinetics. Despite their pervasiveness, whether they are active on any targets has not been systematically explored. We computed the likelihood that approved excipients would bind to molecular targets. Testing in vitro revealed 25 excipient activities, ranging from low-nanomolar to high-micromolar concentration. Another 109 activities were identified by testing against clinical safety targets. In cellular models, five excipients had fingerprints predictive of system-level toxicity. Exposures of seven excipients were investigated, and in certain populations, two of these may reach levels of in vitro target potency, including brain and gut exposure of thimerosal and its major metabolite, which had dopamine D3 receptor dissociation constant Kd values of 320 and 210 nM, respectively. Although most excipients deserve their status as inert, many approved excipients may directly modulate physiologically relevant targets
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