scholarly journals Change of Ecological and Biological Properties of Cespitose and Podsolic Soil at Binomial Deposits Exposed to Local Wild Fire

2020 ◽  
Vol 161 ◽  
pp. 01057
Author(s):  
Alexander Ragimov ◽  
Mikchail Mazirov ◽  
Alexey Belenkov ◽  
Vladimir Nikolaev
Keyword(s):  
Podzolic Soil ◽  
Mixed Forest ◽  
Biological Properties ◽  
Quantitative Composition ◽  
Significant Deterioration ◽  
Biological Condition ◽  
Wild Fire ◽  
Vladimir Region ◽  
Clear Differentiation ◽  
Physical And Chemical

The article deals with the ground wild fire impact on physical and chemical and ecological and biological condition of cespitose and podsolic soils on binomial deposits of the Meshcherska province of Gus-Khrustalny district, the Vladimir region under different forest cultures type. In the course of the study, a clear differentiation of changes in the microbiological pool of sod-podzolic soil on bicompartmental deposits under different types of forests was established. The quantitative composition of ammonia factors after exposure to pyrogenic exposure decreased on the sod-podzolic soil of coniferous forests, while the number of photographers, mushrooms, and oligotrophs sharply decreases in the area of pyrogenic exposure in the mixed forest. Within the territory exposed to fire, there is a decrease in the content of organic matter, as well as the content of other biophilic elements. The physical properties of sod-podzolic soil on bicompartmental deposits are also subject to change, in the direction of significant deterioration.

COMPARATIVE ASSESSMENT OF PHYSICAL AND CHEMICAL PARAMETERS, QUANTITATIVE COMPOSITION OF THE MAIN GROUPS OF MICROORGANISMS AND PHYTOTOXICITY OF CERTAIN TYPES OF SOILS IN SURGUT

2020 ◽  
Author(s):  
M. V. Mantrova ◽  
Keyword(s):  
Comparative Analysis ◽  
Urban Soils ◽  
Podzolic Soil ◽  
Comparative Assessment ◽  
Lead Content ◽  
Quantitative Composition ◽  
Chemical Parameters ◽  
Physical And Chemical Parameters ◽  
Number Of Microorganisms ◽  
Physical And Chemical

The article presents a comparative analysis of 4 urban soils-culturosem, 2 urbanozem and undisturbed podzolic soil (control) - by physical and chemical parameters, the quantitative composition of the main groups of microorganisms and phytotoxicity. Urban soils differ from the background and from each other in terms of acidity, saturation of bases, and lead content; they lead in the number of microorganisms and have a stimulating effect on radish seeds and seedlings.

Methodological approaches to modeling the conditions for the formation of technological losses of oil and petroleum products due to evaporation from tanks

2020 ◽  
Vol 10 (4) ◽  
pp. 386-393
Author(s):  
Кonstantin Е. Lesnykh ◽  
◽  
Aleksey А. Korshak ◽  
Nafis N. Khafizov ◽  
Andrey A. Kuznetsov ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Petroleum Products ◽  
Quantitative Composition ◽  
Number Of Factors ◽  
Main Pipelines ◽  
Pumping Rates ◽  
Mathematical Relationships ◽  
Physical And Chemical ◽  
Storage Temperatures ◽  
And Chemical Properties

The conditions for the formation of technological losses of oil and petroleum products during transportation through the main pipelines are considered and it is established that the main sources of these losses are large and small airflows of reservoirs. The value of technological losses from evaporation from tanks depends on a large number of factors, in particular: storage temperatures, pumping rates, tank filling heights, physical and chemical properties of the transported liquid, tanks turnover. Until now, a unified approach to the procedure for determining the qualitative and quantitative composition of technological losses from the evaporation of hydrocarbons during storage has not been developed, which leads to disagreements in assessing the actual losses of energy carriers. According to the analysis, it was found that the best is the calculation method for determining the actual irrecoverable losses of hydrocarbons. Its application involves the use of mathematical relationships that describe the dynamics of evaporation of oil and petroleum products in real conditions. To establish such relationships, it is proposed to develop and implement a unit that enables simulation of the process of evaporation from tanks under various conditions and obtaining experimental data taking into account a combination of a variety of factors that affect the amount of the technological losses.

Nanobiotechnology: Nature-inspired silver nanoparticles towards green synthesis

2021 ◽  
pp. 0958305X2198988
Author(s):  
Nur Syakirah Rabiha Rosman ◽  
Noor Aniza Harun ◽  
Izwandy Idris ◽  
Wan Iryani Wan Ismail
Keyword(s):  
Electrical Conductivity ◽  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Metal Nanoparticles ◽  
Current Trend ◽  
Biological Properties ◽  
Noble Metal Nanoparticles ◽  
Current Application ◽  
Physical Chemical ◽  
Physical And Chemical

The emergence of technology to produce nanoparticles (1 nm – 100 nm in size) has drawn significant researchers’ interests. Nanoparticles can boost the antimicrobial, catalytic, optical, and electrical conductivity properties, which cannot be achieved by their corresponding bulk. Among other noble metal nanoparticles, silver nanoparticles (AgNPs) have attained a special emphasis in the industry due to their superior physical, chemical, and biological properties, closely linked to their shapes, sizes, and morphologies. Proper knowledge of these NPs is essential to maximise the potential of biosynthesised AgNPs in various applications while mitigating risks to humans and the environment. This paper aims to critically review the global consumption of AgNPs and compare the AgNPs synthesis between conventional methods (physical and chemical) and current trend method (biological). Related work, advantages, and drawbacks are also highlighted. Pertinently, this review extensively discusses the current application of AgNPs in various fields. Lastly, the challenges and prospects of biosynthesised AgNPs, including application safety, oxidation, and stability, commercialisation, and sustainability of resources towards a green environment, were discussed.

scholarly journals ROLE OF NANOTECHNOLOGY IN DENTAL SCIENCES: A REVIEW

2020 ◽  
Vol 4 (3) ◽  
Author(s):  
Ramakoteswara Rao N ◽  
Kranthi kiran Reddy E ◽  
Leena Gahane ◽  
SV Ranganayakulu
Keyword(s):  
Materials Science ◽  
Biological Properties ◽  
Synthesis Methods ◽  
Nano Technology ◽  
New Science ◽  
Physical Chemical ◽  
Health Related ◽  
Nano Science ◽  
Physical And Chemical

Nano technology is the multi disciplinary science and technology, which has emerged as new science exploiting specific phenomena and direct manipulation of materials on nanoscale. Nanotechnology deals with the physical, chemical, and biological properties of structures and their parts at nanoscale dimensions. It's established on the concept by creating functional structures by controlling corpuscles and molecules on a one-by-one basis by different physical and chemical synthesis methods. Developments in materials science and, nano biotechnology is especially forestalled to provide elevates in dental sciences and initiations in oral health-related diagnostic and therapeutical methods. Keywords: Nano Science, dentistry, Nanocomposite, Nanorobots, Nanomaterials.

scholarly journals Structure Determination of C23H19N4OBr from Synchrotron Data

2014 ◽  
Vol 70 (a1) ◽  
pp. C141-C141
Author(s):  
Ozen Ozgen ◽  
Engin Kendi ◽  
Semra Koyunoglu ◽  
Akgul Yesilada ◽  
Hwo-Shuenn Sheu
Keyword(s):  
Powder Diffraction ◽  
Structural Information ◽  
Chemical Properties ◽  
Biological Properties ◽  
Cell Parameters ◽  
Fundamental Understanding ◽  
Physical And Chemical ◽  
Radiation Research ◽  
And Chemical Properties

A significant part of medicine is based on the discovery and development of drugs. It is very important to know the crystal structure of pharmaceutical compounds for fundamental understanding of structure, physical and chemical properties. Many of these materials are available only as powders. So any structural information must be obtained from powder diffraction. I am going to present following the stages while solving the structure of C23H19N4OBr, 2-[3-phenyl-4(m-bromophenyl)-2-pyrazolin-1-yl]-3-methyl-4(3H)-quinazolinone, from 2-pyrazolines derivatives. The compounds are known to display various biological properties such as fungicidal insecticidal, anti bacterial, anti viral activities, pharmacological properties such as antiinflammatory agents and have industral properties(1). The powder diffraction data was collected with Debye Scherrer camera at the BL01C2 beamline at room temperature in National Synchrotron Radiation Research Center(NSRRC), Taiwan. X-ray of wavelength was 1.0333Å. This compound crystallizes in orthorhombic system space group P bca, Z=8, unit cell parameters of a=25.83(1)Å, b=15.55(5)Å, c=10.63(3)Å, and V=4266.0(10)Å3. Reliability factors were reached Rwp=0.075, Rp=0.053, RB=0.086 ve S=1.31 after Rietveld refinement.

Strategies for inclusion of growth factors into 3D printed bone grafts

2021 ◽  
Author(s):  
Alessia Longoni ◽  
Jun Li ◽  
Gabriella C.J. Lindberg ◽  
Jelena Rnjak-Kovacina ◽  
Lyn M. Wise ◽  
...  
Keyword(s):  
Growth Factors ◽  
Bone Regeneration ◽  
New Technologies ◽  
Healing Process ◽  
Bone Grafts ◽  
Biological Properties ◽  
3 Dimensional ◽  
3D Printed ◽  
Physical And Chemical ◽  
Large Bone

Abstract There remains a critical need to develop new technologies and materials that can meet the demands of treating large bone defects. The advancement of 3-dimensional (3D) printing technologies has allowed the creation of personalized and customized bone grafts, with specific control in both macro- and micro-architecture, and desired mechanical properties. Nevertheless, the biomaterials used for the production of these bone grafts often possess poor biological properties. The incorporation of growth factors (GFs), which are the natural orchestrators of the physiological healing process, into 3D printed bone grafts, represents a promising strategy to achieve the bioactivity required to enhance bone regeneration. In this review, the possible strategies used to incorporate GFs to 3D printed constructs are presented with a specific focus on bone regeneration. In particular, the strengths and limitations of different methods, such as physical and chemical cross-linking, which are currently used to incorporate GFs to the engineered constructs are critically reviewed. Different strategies used to present one or more GFs to achieve simultaneous angiogenesis and vasculogenesis for enhanced bone regeneration are also covered in this review. In addition, the possibility of combining several manufacturing approaches to fabricate hybrid constructs, which better mimic the complexity of biological niches, is presented. Finally, the clinical relevance of these approaches and the future steps that should be taken are discussed.

Biological Synthesis of Silver Nanoparticles and their Biomedical Activity: A Review

2021 ◽  
Vol 09 ◽  
Author(s):  
Sarvat Zafar ◽  
Aiman Zafar ◽  
Fakhra Jabeen ◽  
Miad Ali Siddiq
Keyword(s):  
Silver Nanoparticles ◽  
Large Scale ◽  
Scale Up ◽  
Cost Effective ◽  
Biological Properties ◽  
Single Step ◽  
Biological Synthesis ◽  
Nanosized Particles ◽  
Environment Friendly ◽  
Physical And Chemical

: Nanotechnology studies the various phenomena of physio-chemical procedures and biological properties for the generation of nanosized particles, and their rising challenges in the various sectors, like medicine, engineering, agriculture, electronic, and environmental studies. The nanosized particles exhibit good anti-microbial, anti-inflammatory, cytotoxic, drug delivery, anti-parasitic, anti-coagulant and catalytic properties because of their unique dimensions with large surface area, chemical stability and higher binding density for the accumulation of various bio-constituents on their surfaces. Biological approaches for the synthesis of silver nanoparticles (AgNPs) have been reviewed because it is an easy and single-step protocol and a viable substitute for the synthetic chemical-based procedures. Physical and chemical approaches for the production of AgNPs are also mentioned herein. Biological synthesis has drawn attention because it is cost-effective, faster, non-pathogenic, environment-friendly, easy to scale-up for large-scale synthesis, and having no demand for usage of high pressure, energy, temperature, or noxious chemical ingredients, and safe for human therapeutic use. Therefore, the collaboration of nanomaterials with bio-green approaches could extend the utilization of biological and cytological properties compatible with AgNPs. In this perspective, there is an immediate need to develop ecofriendly and biocompatible techniques, which strengthen efficacy against microbes and minimize toxicity for human cells. The present study introduces the biological synthesis of silver nanoparticles, and their potential biomedical applications have also been reviewed.

Comparison of earthworm populations in arable and grassland fields in the Outer Western Carpathians, South Poland

Biologia ◽  
2016 ◽  
Vol 71 (3) ◽  
Author(s):  
Agnieszka Józefowska ◽  
Anna Miechówka ◽  
Jan Frouz
Keyword(s):  
Chemical Properties ◽  
Biological Properties ◽  
Outer Western Carpathians ◽  
Geographical Regions ◽  
Type Of Land Use ◽  
Earthworm Biomass ◽  
The Mean ◽  
Physical And Chemical ◽  
The Impact ◽  
Earthworm Populations

AbstractThe impact of different geographical regions (Silesian Foothills, region 1 and Maly Beskids, region 2), and method of soil use (arable field and grassland) on the main soil properties and biological activity was studied. Earthworm biomass, density and diversity, as well as dehydrogenase activity, were analysed. Significant soil physical and chemical properties were more affected by regions, whereas the type of land use had a greater impact on the biological properties. The mean earthworm density was 213 ind. m

scholarly journals Rat α2 acute-phase macroglobulin. Isolation and physicochemical properties

1976 ◽  
Vol 159 (3) ◽  
pp. 661-665 ◽  
Author(s):  
F Gauthier ◽  
H Mouray
Keyword(s):  
Physicochemical Properties ◽  
Acute Phase ◽  
Polyacrylamide Gel Electrophoresis ◽  
Deae Cellulose ◽  
Chemical Properties ◽  
Amino Acid Content ◽  
Acute Phase Reactant ◽  
Biological Properties ◽  
Exchange Chromatography ◽  
Physical And Chemical

1. Rat α2 acute-phase macroglobulin was isolated from turpentine-injected rats by Sephadex G-200 chromatography and ion-exchange chromatography on DEAE-cellulose. This method, since it does not include (NH4)2SO4 treatment, allows the study of the physicochemical as well as the biological properties of the molecule. 2. The purity of the preparation was demonstrated by ultracentrifugation, polyacrylamide-gel electrophoresis, fused “rocket” immunoelectrophoresis as well as double immunodiffusion. 3. The rat α2 acute-phase macroglobulin was characterized in terms of its main physical and chemical properties. Its isoelctric point was determined by isoelectrofocusing to be 4.55; s020,w was 18.4S and E1%/1cm at 278 nm was 6.8. The mol.wt. was determined by light-scattering to be 770000. 4. The amino acid content was compared with that of rat α1 macroglobulin and was found very similar. The carbohydrate composition of α2 acute-phase macroglobulin was determined to be: hexose, 4.25%; glucosamine, 3.4%; sialic acid, 2%; fucose, 0.2%. From these results it was concluded that α2 acute-phase macroglobulin, although a typical acute-phase reactant, possesses the characteristic physicochemical properties of α macroglobulins.

Sign in / Sign up

Export Citation Format

Share Document