Corrigendum to “Impact of apatite chemical composition on (U-Th)/He thermochronometry: An atomistic point of view” [Geochim. Cosmochim. Acta 167 (2015) 162–176]

The objective of this study was to evaluate, from a technological and nutritional point of view, the chemical composition and functional properties of the industrial winemaking by-products, namely skins, stems and lees. The chemical and physical characteristics, as well as the functional properties (fat and water retention and swelling capacity, antioxidant capacity, and their prebiotic effect), of the dietary fibre of these by-products were studied. The results showed that the skins, stems, and lees are rich in fibre, with the stem fibre containing the highest amounts of non-extractable polyphenols attached to polysaccharides with high antioxidant activity and prebiotic effect. Lee fibre had the highest water retention capacity and oil retention capacity. The results reveal that winemaking by-products could be used as a source of dietary fibre with functional characteristics for food applications.

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YIELD, ECONOMICALLY VALUABLE INDICATORS AND CHEMICAL COMPOSITION OF BLUE HONEYSUCKLE UNDER CONDITIONS OF SAKHALIN TRADE-WIND LITTORAL CLIMATE

Bulletin оf Kamchatka State Technical University ◽

10.17217/2079-0333-2021-56-64-73 ◽

2021 ◽

pp. 64-73

Author(s):

V.N. Yefanov ◽

◽

E.V. Mitusova ◽

Keyword(s):

Chemical Composition ◽

Point Of View ◽

Trade Wind ◽

Plant Industry ◽

Monsoon Climate ◽

Experimental Station ◽

Vavilov Institute ◽

Household Gardens ◽

Blue Honeysuckle

The blue honeysuckle is the earliest ripening berry, which ripens 7–10 days earlier than the garden strawber-ries under the conditions of Sakhalin's climate. It is resistant to lower fungi and parasites and can be cultivat-ed without pesticides. Currently, many honeysuckle varieties with fruits of different morphologies and chemical composition have been bred. We analyzed values of economically valuable indicators and chemical composition in 14 varieties of honeysuckle, which grow in the monsoon climate of Sakhalin. To assess the most productive variety, the values of each character were presented as percentage of the maximum for each indicator. Knowing the total values of characters under investigation made it possible to choose the best va-rieties, from authors` point of view, to grow in the household gardens in the monsoon climate of Sakhalin: from the Pavlovsk Experimental Station of Vavilov Institute of Plant Industry – Leningradsky giant (506.4%), Berel (432.9%) and Viola (423.4%).

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Application of papain enzyme in technology of meat products

Animal Science and Food Technology ◽

10.31548/animal2021.03.005 ◽

2021 ◽

Vol 12 (3) ◽

Author(s):

V. М. Israelian ◽

◽

N. V. Holembovska ◽

N. M. Slobodyanyuk ◽

◽

...

Keyword(s):

Chemical Composition ◽

Raw Materials ◽

Meat Products ◽

Chloride Concentration ◽

Enzyme Concentration ◽

Point Of View ◽

Meat Production ◽

High Catalytic Activity ◽

Medium Temperature ◽

Enzyme Preparations

Production of enzyme preparations occupies one of the leading places in modern biotechnology and belongs to the industries whose production is constantly growing and the field of application is expanding. Various enzyme preparations are widely used in the field of nutrition, this is due to their high catalytic activity, specificity of action, the ability to carry out biochemical reactions in mild conditions. Therefore, it is advisable to use enzymes for various industrial processes, both from an economic and technological point of view. The purpose of the work was to investigate the chemical composition and the activity of papain enzyme preparation with subsequent application in technology of meat production in order to increase the biological value and improve the functional and technological properties of the finished product. The analysis of literature sources and own research shows the prospects for research and the application of enzymes and enzyme preparations based on them in the food industry, as it improves the quality of finished products and the level of greening of production, more rational use of raw materials. As a result of a study of the chemical composition, it was found that the papain enzyme has a high protein content of 87.44%, due to which it has a broader effect on meat proteins. The dependence of papain activity on the pH of the medium, temperature, sodium chloride concentration, and enzyme concentration was studied. The results of the studies showed that the highest papain activity is in the range at pH 5.5–6.0. The enzyme has a maximum collagenase activity at pH 6.0 and at a temperature of 50–60 °C.

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Overlay materials used for increasing lifetime of machine parts working under conditions of intensive abrasion

Research in Agricultural Engineering ◽

10.17221/64/2011-rae ◽

2013 ◽

Vol 59 (No. 1) ◽

pp. 16-22 ◽

Cited By ~ 11

Author(s):

M. Müller ◽

P. Hrabě

Keyword(s):

Wear Resistance ◽

Chemical Composition ◽

Abrasive Wear ◽

Laboratory Experiments ◽

Optical Emission Spectroscopy ◽

Optical Emission ◽

Point Of View ◽

Laboratory Results ◽

Machine Parts ◽

Materials Used

We evaluated a degree of the machine part abrasive wear with secondary focus on their hardness. The paper states laboratory results of overlay systems from their wear resistance point of view. Laboratory experiments were carried out by two-body abrasion on bonded abrasive of a P120 granularity. The results proved an increased abrasive wear resistance of martensitic, ledeburitic and stellitic overlays against eleven different original products. The overlay UTP Ledurit 60 reached the optimum values. The GD-OES (Glow Discharge Optical Emission Spectroscopy) method proved the different chemical composition of the overlay from the stated chemical composition of the overlaying electrode.    

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Sur la composition chimique moyenne des amphibolites

BSGF - Earth Sciences Bulletin ◽

10.2113/gssgfbull.s6-iii.1-3.153 ◽

1953 ◽

Vol S6-III (1-3) ◽

pp. 153-173 ◽

Cited By ~ 3

Author(s):

Pierre Lapadu-Hargues

Keyword(s):

Chemical Composition ◽

Sedimentary Rocks ◽

Point Of View ◽

Igneous Rocks ◽

Chemical Analyses ◽

Average Chemical Composition ◽

Composition Chimique

Abstract In a majority of cases, amphibolites derived from sedimentary rocks can be distinguished from those derived from dioritic or gabbroic igneous rocks on the basis of average chemical composition. From the purely chemical point of view, it is possible to consider that eclogites result from metamorphism of certain types of heteromorphic gabbros such as the ariegites,and ultimately give rise to amphibolitic rocks. Chemical analyses are included.

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Emission Distribution and Regulation of Local Heat Source

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.326-328.330 ◽

2012 ◽

Vol 326-328 ◽

pp. 330-334 ◽

Cited By ~ 3

Author(s):

Jan Valíček ◽

Jana Müllerová ◽

Vlastimil Kuběna ◽

Pavel Koštial ◽

Marta Harničárová ◽

...

Keyword(s):

Particulate Matter ◽

Chemical Composition ◽

Human Health ◽

Fossil Fuels ◽

Local Heating ◽

Point Of View ◽

Total Production ◽

Economic Point ◽

Automated Method ◽

Wide Range

Pollutants can be classified according to their chemical composition, harmfulness, hazardousness, risk rate and toxicity. The most monitored pollutants are particulate matter (PM), carbon monoxide (CO), nitrogen oxide (NOx), sulfur dioxide (SO2), organic substances which are in the form of gaseous phase in waste gases expressed as total organic carbon, dibenzodioxins and dibenzofurans [1-3]. Other pollutants are divided into several groups and subgroups, such as substances with carcinogenic effects (asbestos, Co, Cd, Be, Ni, As, Cr, dioxins, etc.), solid inorganic contaminants (He, Se, animony, and others) and inorganic pollutants in the form of gases (HCl, HF, ammonia, etc.), organic gases and vapours (phenol, toluene, acetone and many others) and gases causing the greenhouse effect (CO2, methane, N2O, hydrofluorocarbons, etc.). The term particulate matter, or suspended matter refers to the emissions of a wide range of wind drift solids and liquid particles of material in size from several nanometres up to 0.5 mm, which stay in the air for some time. This is a major component of atmospheric pollution, which contributes to harmful effects not only on human health but also on intensity of materials degradation. Into the atmosphere, where we can meet them, regardless of particle size and chemical composition, in the form of a complex heterogeneous mixture, they are released from burning fossil fuels and also from burning biomass-based fuels, while domestic heating accounts for about 16% of the total production of particulate matter [4,5,6]. This percentage represents a degree of imperfect combustion of fuels used in local heating. Emissions from incomplete combustion are undesirable from the point of view of human health as well as from the economic point of view, because this leads to the degradation of materials. Nevertheless, since fuel combustion is necessary for the society, emissions are still produced. This paper presents an automated method of perfect combustion control in local heating in order to minimize emissions being produced.

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ON THE CHEMICAL COMPOSITION OF THE CELL WALLS OF THE ACTINOMYCETALES AND ITS RELATION TO THEIR SYSTEMATIC POSITION

Canadian Journal of Microbiology ◽

10.1139/m55-018 ◽

1954 ◽

Vol 1 (2) ◽

pp. 140-143 ◽

Cited By ~ 11

Author(s):

R. J. Avery ◽

F. Blank

Keyword(s):

Chemical Composition ◽

Cell Walls ◽

Systematic Position ◽

Morphological Features ◽

Point Of View ◽

Nocardia Asteroides ◽

Complete Agreement ◽

Streptomyces Albus ◽

Micromonospora Chalcea

Washed and dried cultures of Actinomyces bovis, A. israeli, Nocardia asteroides, Streptomyces albus, S. griseus, and Micromonospora chalcea were treated as described by Scholl (1908). Neither chitin nor cellulose, which form the framework of the Eumycetes, could be isolated. Therefore, from this chemical point of view the Actinomycetales have nothing in common with the true fungi, but rather with bacteria. These findings are in complete agreement with the morphological features of the Actinomycetales which indicate their place among the bacteria.

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Investigations of quartz raw materials from the locality of Rekovac muncipality

Hemijska industrija ◽

10.2298/hemind190328023m ◽

2019 ◽

Vol 73 (4) ◽

pp. 265-274

Author(s):

Slavica Mihajlovic ◽

Zivko Sekulic ◽

Jovica Stojanovic ◽

Vladan Kasic ◽

Iroslav Sokic ◽

...

Keyword(s):

Chemical Composition ◽

Physical Properties ◽

Quartz Sand ◽

Raw Materials ◽

Construction Materials ◽

Size Fraction ◽

Point Of View ◽

Raw Material ◽

Potential Applications

Quality of raw materials, including quartz sand and quartzite, varies from one deposit to another. Furthermore, the material quality determines in which industrial branches it can be used after certain preparation processes. Potential applications of quartz raw materials are: in the construction and refractory industry, ceramics and glass industry, then in metallurgy, foundry and also in production of water treatment filters. Geological investigations of the central Serbia region, in the Rekovac municipality, resulted in identification of occurrence of quartz sand ("Ursula") and quartzite ("Velika Krusevica"). Preliminary laboratory tests and characterization of the quartz sand size fraction -0.63+0.1 mm confirmed the possibility of applying this size fraction in the construction materials industry, while the quartzite can be used in refractory, glass and metallurgy industries. After determining the geological reserve of quartz sand "Ursula" and quartzite "Velika Krusevica", detailed investigations are required. Quality conditions from the aspect of chemical composition and physical properties of quartz sand and quartzite are mostly clearly defined by a special standard for this purpose. On the other hand, there are also application areas where standards does not exist, but users define their quality conditions. This example is with the application of quartz sand in the production of water glass. Chemical composition as well is not always the determining factor for the application of quartz raw material. For example, for quartz sand used for sandblasting, grain form is essential. From the economic analysis point of view, the prices of quartz raw materials vary depending on their chemical and physical properties. After all, what needs to be pointed out is the fact that these raw materials are very widespread in nature and that their exploitation is quite simple. After the raw material is excavated, it is stored and further sieved, washed, dried and processed according to customer requirements. All of these processes are cheaper than preparing, for example, limestone, and significaly cheaper than preparation of metal ores.

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Corrosion survey of the palm greenhouse support structure in the castle garden in Lány

Koroze a ochrana materialu ◽

10.2478/kom-2019-0007 ◽

2019 ◽

Vol 63 (1) ◽

pp. 54-64

Author(s):

P. Pokorný ◽

M. Hrabánek ◽

D. Dvorský ◽

L. Turek

Keyword(s):

Corrosion Resistance ◽

Cast Iron ◽

Chemical Composition ◽

Point Of View ◽

Coating System ◽

Current State ◽

Steel Cast ◽

Metal Materials ◽

Static Point ◽

Applied Coating

Abstract The corrosion survey of the supporting steel/cast iron structure of the palm greenhouse included not only the characteristics of the used metal materials (microstructure, chemical composition), but also the current state of the system of corrosion protection (thickness and stratigraphy of the applied coating system). From a static point of view, the palm greenhouse design meets the applicable standards if two damaged cast iron columns are repaired. A new top coat with extended corrosion resistance is required on the surface of individual metal profiles.

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Assessment of the Chemical Composition in Different Dental Implant Types: An Analysis through EDX System

Coatings ◽

10.3390/coatings10090882 ◽

2020 ◽

Vol 10 (9) ◽

pp. 882 ◽

Cited By ~ 1

Author(s):

Fernando José Dias ◽

Ramón Fuentes ◽

Pablo Navarro ◽

Benjamin Weber ◽

Eduardo Borie

Keyword(s):

Chemical Composition ◽

Dental Implant ◽

Morphological Characteristics ◽

Biological Response ◽

Point Of View ◽

Variable Pressure ◽

Implant Surface ◽

Structural Morphology ◽

Two Samples ◽

Bone Level

The use of dental implants has been increasing in the last years; however, their chemical composition is an important issue due to the fact that the implant surface may suffer a corrosion process, allowing the possibility of ions being released and resulting in a possible biological response. Thus, the aim of this study was to evaluate the morphological analysis of the surface and chemical composition of different implant types through an energy-dispersive X-ray spectrometry (EDX) system. Eight dental implant models from different manufacturers were analyzed using variable pressure scanning electron microscopy (VP-SEM) and EDX. The chemical composition and general characteristics of the structural morphology in different dental implant surfaces were analyzed randomly. Nitrogen was identified in two samples, while zirconium was observed in only one model. Aluminium was identified in five samples ranging between 4% and 11% of its composition. Regarding the morphological characteristics, two samples from the same manufacturer had the most irregular surface designed to increase the contact surface, while the others revealed their surfaces with roughness at the micrometric level with no major irregularities. In conclusion, despite the morphology of implants being similar in most of the analyzed samples, more than 50% of them, which are brands of implants available on the market, showed aluminium on the implant surface. Finally, STR (Bone level, Roxolid), DENT (Superline) and NEO (Helix GM) could be considered, among the analyzed samples, the safest implants from the point of view that no aluminium was detected in their chemical composition.

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