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PubMed Journals Articles About "Avista Pharma Solutions" RSS

10:32 EDT 16th July 2019 | BioPortfolio

Avista Pharma Solutions PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Avista Pharma Solutions articles that have been published worldwide.

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Showing "Avista Pharma Solutions" PubMed Articles 1–25 of 1,900+

Fish species composition, distribution and community structure in the lower reaches of Ganjiang River, Jiangxi, China.

The Ganjiang River (length: 823 km; drainage area: 82,809 km) is the largest river that flows into Poyang Lake and an important tributary of the Yangtze River. In this study, fish fauna were collected from 10 stations in the lower reaches of the river (YC: Yichun, XY: Xinyu, SG: Shanggao, GA: Ganan, ZS: Zhangshu, FC: Fengcheng, NC: Nanchang, QS: Qiaoshe, NX: Nanxin, CC: Chucha) from March 2017 to February 2018. The species composition and distribution as well as spatio-temporal variation in biodiversity a...


Photolysis of bis(2-ethylhexyl) phthalate in aqueous solutions at the presence of natural water photoreactive constituents under simulated sunlight irradiation.

The photolysis of bis(2-ethylhexyl) phthalate (DEHP) under simulated sunlight in the presence of the natural water photoreactive constituents was investigated. The presence of nitrate or ferric ions facilitated the photodegradation of DEHP via oxidation by generation of •OH. The fulvic acids (FAs), at low concentrations, promoted the photolysis of DEHP via energy transfer from the photoreaction-generated FA*. However, the DEHP photolysis was inhibited with high concentrations of FAs since the excess FAs a...

Fabrication of novel magnetic graphene oxide nanocomposites for selective adsorption of mercury from aqueous solutions.

In this work, a novel functionalized graphene oxide (GO) was used as an effective and selective adsorbent for removal of mercury (Hg). The magnetic nanocomposite adsorbent (MNA) based on GO was prepared through surface reversible addition-fragmentation chain transfer copolymerization of acrylic monomers and then the formation of FeO nanoparticles. The structure of MNAs was characterized by using FTIR, SEM, TEM, VSM, XRD, and nitrogen adsorption/desorption isotherms. The results of ion adsorption of MNAs dem...


A thermal ink-jet printing approach for evaluating susceptibility of bacteria to antibiotics.

An inexpensive method for determining minimum inhibitory concentrations (MIC) using ink-jet printing to deposit drug solutions and bacterial suspensions onto agar was developed. Substrate concentrations were varied using a "Y-value", whereby a series of rectangles with the same width and colour but different heights were printed within a fixed unit area. Prior to MIC determination, the printer cartridges used were calibrated using Fast Green dye. The impact of thermal ink-jet printing on bacterial viability...

Oral food challenge implementation: the first mixed-methods study exploring barriers and solutions.

Due to inaccuracies in commonly used tests for food allergy, oral food challenges (OFCs) are considered the gold standard, but OFC implementation is suboptimal.

Engaging stakeholders in the assessment of NBS effectiveness in flood risk reduction: A participatory System Dynamics Model for benefits and co-benefits evaluation.

There is an imperative worldwide need to identify effective approaches to deal with water-related risks, and mainly with increasingly frequent floods, as well as with severe droughts. Particularly, policy and decision-makers are trying to identify systemic strategies that, going beyond the mere risk reduction, should be capable to deal simultaneously with multiple challenges (such as climate resilience, health and well-being, quality of life), thus providing additional benefits. In this direction, the contr...

Influence of pH, electrical conductivity and ageing on the extractability of benzoapyrene in two contrasting soils.

Higher soil pH and electrical conductivity (EC) were suspected to result in higher extractability and bioavailability of benzo[a]pyrene (B[a]P) in soils. In this study, we investigated the influence of pH, EC and ageing on the extractability of B[a]P in two contracting soils (varied largely in soil texture, clay mineralogy and organic carbon content) over 4 months. Dilute sodium hydroxide (0.2 mol L) and sodium chloride (0.1 mol L) solutions were used to adjust soil pH and EC either separately or ...

Carbamazepine is degraded by the bacterial strain Labrys portucalensis F11.

The occurrence of pharmaceuticals in the environment is a topic of concern. Carbamazepine (CBZ) is a widespread antiepileptic drug and due to its physical-chemical characteristics minimal removal is achieved in conventional water treatments, and thus has been suggested as a molecular marker of wastewater contamination in surface water and groundwater. The present study reports the biotransformation of CBZ by the bacterial strain Labrys portucalensis F11. When supplied as a sole carbon source, a 95.4% biotra...

Exploring the impact of Mg-doped ZnO nanoparticles on a model soil microorganism Bacillus subtilis.

The environmental contamination of soil by metal oxide nanomaterials is a growing global concern because of their potential toxicity. We investigated the effects of Mg doped ZnO (Mg-nZnO) nanoparticles on a model soil microorganism Bacillus subtilis. Mg-nZnO exhibited only a moderate toxic effect on B. subtilis vegetative cells but was able to prevent biofilm formation and destroy already formed biofilms. Similarly, Mg-nZnO (≤1 mg/mL) was moderately toxic towards Listeria monocytogenes, Staphylococcus a...

A spectrophotometric method for simultaneous determination of trace ions of copper, cobalt, and nickel in the zinc sulfate solution by ultraviolet-visible spectrometry.

In the zinc sulfate solution, the concentration ratio of zinc to metal ion impurities can be up to 10, which causes impurity ion signals to be severely masked by the zinc signal. In particular, nickel exhibits a strong nonlinearity. Conventional spectroscopic methods are commonly used to detect multi-component analytes with similar concentrations and require the detection component to be linear to satisfy Beer-Lambert law. In order to solve high concentration ratio and nonlinear problems, a spectrophotometr...

Metallocages for Metal Anions: Highly Charged Co@Ge95- and Ru@Sn96- Clusters Featuring Spherically Encapsulated Co- and Ru2- Anions.

Endohedral clusters count as molecular models for intermetallic compounds - a class of compounds in which bonding principles are scarcely understood. Here we report on soluble cluster anions with the highest charges on a single cluster known so far. The clusters reflect the close analogy between intermetalloid clusters and corresponding coordination polyhedra in intermetallic compounds. While many endohedral Zintl ions have previously been obtained via solution based reactions, we now established Raman spec...

From Thorium to Plutonium: Trends in Actinide(IV) Chloride Structural Chemistry.

A series of eighteen tetravalent actinide (An = Th, U, Pu) compounds were synthesized from acidic aqueous solutions containing thorium, uranium, or plutonium and a series of protonated nitrogen heterocycles. The compounds were characterized using Raman, IR, and optical absorption spectroscopies. The structures were determined using single-crystal X-ray diffraction and found to consist of [An(HO)Cl] ( = 4-7 and = 2-4) or AnCl molecular units. Breaks in the structural chemistry of the early actinides were ob...

Vaccines against anthrax based on recombinant protective antigen: problems and solutions.

Anthrax is a dangerous bio-terror agent because spores are highly resilient and can be easily aerosolized and disseminated. There is a threat of deliberate use of anthrax spores aerosol that could lead to serious fatal diseases outbreaks. Existing control measures against inhalation form of the disease are limited. All of this has provided an impetus to the development of new generation vaccines. Areas сovered: This review is devoted to challenges and achievements in the design of vaccines based on the an...

Wound Healing Effect of Non-Thermal Atmospheric Pressure Plasma Jet on a Rat Burn Wound Model: A Preliminary Study.

Worldwide, an estimated 6 million patients seek medical attention for burns annually. Various treatment methods and materials have been investigated and developed to enhance burn wound healing. Recently, a new technology, plasma medicine, has emerged to offer new solutions in wound care. As the development of plasma medicine has shown benefit in wound healing, we aimed to assess the effects of plasma medicine on burn wounds. To investigate the effectiveness of a non-thermal atmospheric pressure plasma jet f...

Novel Pyrene Excimer and Fluorogenic Probe for the Detection of Alkylating Agents.

A pyrene-containing salicylic acid derivative () was found to be low in fluorescence, but its derivative pyrene-containing methyl salicylate () was found to be highly fluorescent in aqueous solution. This derivative has been tested in solution and found to be superior in the fluorogenic assay of pharmaceutical compounds, detection of chemical warfare agents, a preliminary toxicology test, mutagenicity of medicinal compounds, and other chemical analyses, including trimethylsilyl diazomethane; alkyl bromides ...

A synergistic analysis of drag reduction on binary polymer mixtures containing guar gum.

Drag reduction by the addition of polymer additives has been widely studied. However, there are only a few studies on binary polymer mixtures, here named blends. In this work, xanthan gum, polyacrylamide and poly(ethylene oxide) were associated with guar gum and drag reduction was used as a parameter to determine the synergistic interaction between polymers. The aim was to verify the relation of the synergy with the rigidity of the polymeric chains, the molecular weights and the magnitude of the molecular i...

Preparation and characterization of electrospun poly(lactic acid)-chitosan (core-shell) nanofibers with a new solvent system.

Poly(lactic acid)-chitosan (PLA-CS) core-shell nanofibers were successfully fabricated by coaxial electrospinning technique using a new solvent system for the core and shell solutions, dimethylformamide for the core solution and trifluoro-acetic acid/acetic acid (90/10 v/v) for the shell solution. The formation of the core-shell structure of the nanofibers with this new solvent system was confirmed by transmission electron microscopy (TEM) and attenuated total reflectance Fourier transform spectroscopy (ATR...

On Signalling and Estimation Limits for Molecular Birth-Processes.

Understanding and uncovering the mechanisms or motifs that molecular networks employ to regulate noise is a key problem in cell biology. As it is often difficult to obtain direct and detailed insight into these mechanisms, many studies instead focus on assessing the best precision attainable on the signalling pathways that compose these networks. Molecules signal one another over such pathways to solve noise regulating estimation and control problems. Quantifying the maximum precision of these solutions del...

Influence of organic matter and CO supply on bioremediation of heavy metals by Chlorella vulgaris and Scenedesmus almeriensis in a multimetallic matrix.

This research evaluated the influence of organic matter (OM) and CO addition on the bioremediation potential of two microalgae typically used for wastewater treatment: Chlorella vulgaris (CV) and Scenedesmus almeriensis (SA). The heavy metal (HM) removal efficiencies and biosorption capacities of both microalgae were determined in multimetallic solutions (As, B, Cu, Mn, and Zn) mimicking the highest pollutant conditions found in the Loa river (Northern Chile). The presence of OM decreased the total biosorpt...

Ligand-assisted synthesis and cytotoxicity of ZnSe quantum dots stabilized by N-(2-carboxyethyl)chitosans.

Here we report a green synthesis of ZnSe quantum dots (QDs) in aqueous solution of polyampholyte chitosan derivative - N-(2-carboxyethyl)chitosan (CEC) with substitution degrees (DS) from 0.7 to 1.3 and molecular weight (MW) of 40 kDa and 150 kDa. We have shown that the maximum intensity of photoluminescence (PL) is exhibited by ZnSe QDs synthesized in solutions of CEC with DS 1 at Se:Zn molar ratio 1:2.5. The defect-related band was predominant in the PL spectra of ZnSe QDs obtained at room temperature...

Hedgerow typology and condition analysis to inform greenway design in rural landscapes.

Over the past decades, Western European hedgerows have been declining as a result of land use change. Disused infrastructure corridors such as railways and tramways can host a range of existing and returning semi-natural habitats, including extensive hedgerow networks. However, long term corridor abandonment can result in network deterioration to gappy hedgerows, lines of trees and eventually individual scrub features. The loss of hedgerows results in the loss of many ecosystem services, habitat for species...

Highly efficient and selective recovery of Au(III) by a new metal-organic polymer.

A metal-organic polymer with high water stability was successfully developed to efficiently recover Au(III) from aqueous solutions. This material shows excellent performance for the adsorption of Au(III). Nearly 100% of Au(III) could be removed with fast adsorption rate at low concentration solutions, and the maximum adsorption capacity of 1317 mg/g could be achieved. Significantly, the material shows encouraging selectivity toward Au(III) in the presence of competitive ions such as Cu(II), Ni(II), Zn(II)...

Efficient Removal of Fluoride by Complexation Extraction: Mechanism and Thermodynamics.

A complexation extraction system was designed to develop a new process for the efficient removal of fluoride from solutions, such as zinc or copper electrolytes or wastewater derived from flue gas. The effects of the boron fluoride molar ratio, organic phase composition, initial pH, temperature, and phase volume ratio on the extraction efficiency were investigated. The extraction efficiency was found to increase with the increase in the boron fluoride molar ratio, Alamine336 concentration, and phase volume ...

Health professionals' perspectives on delivering patient-focused wound management: a qualitative study.

This study examined the perspectives of health professionals on the barriers and solutions to delivery of patient-focused wound management and outcomes.

GANE: A Generative Adversarial Network Embedding.

Network embedding is capable of providing low-dimensional feature representations for various machine learning applications. Current work focuses on: 1) designing the embedding as an unsupervised learning task to explicitly preserve the structural connectivity in the network or 2) generating the embedding as a by-product during the supervised learning of a specific discriminative task in a deep neural network. In this paper, we aim to take advantage of these two lines of research in the view of multi-output...


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