Physical-Chemical Studies of Gaizes as Alternative Raw Materials for the Production of Foam Glass and Foam Materials

The macro- and microstructure is investigated by microscopic analysis methods. The elemental, granulo-metric and mineralogical composition of diatomite of the Chernoyarskoe deposit is determined. As a result of complex thermal analysis, using a differential scanning calorimeter, intervals of continuous dehydration of diatomite were studied, as well as polymorphic transformations of quartz and other minerals. Physical-chemical methods of research have discovered that diatomite of the Chernoyarskoe deposit contains amorphous silica, quartzite, clay impurities, opal and minor amounts of calcite, mica, zeolite, and so this diatomite is a promising raw material for the synthesis of foam glass.

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On the diagnostics of Adonis L. species (Ranunculaceae) of the Russian flora

10.33920/med-06-2002-01 ◽

2020 ◽

pp. 3-14

Author(s):

Aleksandr Luferov

Keyword(s):

Raw Materials ◽

Natural Populations ◽

Structural Features ◽

Biologically Active ◽

Scientific Medicine ◽

Diagnostic Features ◽

Plant Raw Materials ◽

Similar Chemical ◽

Chemical Studies ◽

Alternative Sources

The article provides brief information about cardiotonic, sedative, cytostatic, diuretic, and antibacterial effects of biologically active compounds of Adonis L. (Ranunculaceae) species. Chemical studies allowed to identify the cardiac glycosides, or cardenolides: or cardenolides: adontoxin, adonitol, adonitoxigenin, acetyldigitoxin and others. In scientific medicine, it is currently allowed to use Adonis vernalis L. Other types of Adonis have a similar chemical composition and are offered as substitutes for this official species, for example, Adonis apennina L. Many Adonis species have limited natural resources, and in some regions are rare, requiring conservation of their natural populations. The search for alternative sources of medicinal plant raw materials, based on this, is relevant. The experimental part of our research was carried out using the morphological and geographical method with the involvement of information on ecology and phenology. For the first time summarizes the diagnostic features of Adonis flora of Russian flora. Previously unknown structural features (shape and size of anthers) were identified that characterize the subgenera Adonanthe and Adonis. Taxonomic study of the genus Adonis of the Russian flora allowed us to determine its species composition, clarify its systematic affiliation, and nomenclature synonyms. 9 species were identified. Of these, 6 are perennials belonging to the subgenus Adonanthe, section Consiligo, which includes 2 subsections: Amurenses (2 species) and Vernales, which is differentiated into 2 rows: Apenninae (2 species) and Vernales (2 species). Subgenus Adonis is represented by 2 sections: Adonis (1 species) and Lophocarpa with sections Aestivales (1 species) and Dentatae (1 species). For all the considered species and varieties, the main distribution areas are given. A key has been compiled to determine the wild Adonis species distributed in Russia.

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Complex Protection of Pipelines Using Silicate Materials Based on Local Raw Materials of the Far East

Materials Science Forum ◽

10.4028/www.scientific.net/msf.945.46 ◽

2019 ◽

Vol 945 ◽

pp. 46-52 ◽

Cited By ~ 6

Author(s):

Elena A. Yatsenko ◽

B.M. Goltsman ◽

A.V. Ryabova

Keyword(s):

Oil And Gas ◽

External Surface ◽

Raw Materials ◽

Foam Glass ◽

Russian Far East ◽

Far East ◽

The Far East ◽

Inner Surface ◽

Oil And Gas Pipelines ◽

The Russian Far East

Modern trends in the development of the oil and gas infrastructure of the Russian Far East are considered. The main threats in the operation of oil and gas pipelines are described. The technology of complex protection of pipeline surfaces is proposed. Protection of the inner surface is achieved through the use of silicate enamel coatings, protection of the external surface – through the use of foam glass. On the basis of local silicate raw materials the technology of the described materials is developed, and their main properties are determined. Recommendations on the application of the developed technology for the protection of pipelines are given.

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Utilization of Porcelain Tile Polishing Residue

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.410.699 ◽

2021 ◽

Vol 410 ◽

pp. 699-703

Author(s):

Valeriya È. Shvarczkopf ◽

Irina A. Pavlova ◽

Elena P. Farafontova

Keyword(s):

Glassy Phase ◽

Raw Materials ◽

Foam Glass ◽

Mixture Preparation ◽

Cleaning Equipment ◽

Oil Paints ◽

Roofing Materials ◽

Sodium Feldspar ◽

By Products ◽

Porcelain Tile

The research focuses on the properties of by-products formed in the production of porcelain stoneware: polishing residue and residue of the mixture-preparation shop. The polishing residue consists of glassy phase (80%), quartz (14%), mullite (5%). Residue of the mixture-preparation shop consists of quartz (~ 18%), muscovite (~ 6.9%), kaolinite (~ 20.5%), calcium-sodium feldspar (~ 51.4%), diopside (~ 2.98%). Polishing residue occurs when polishing porcelain stoneware to create a glossy surface and when polishing the side faces of porcelain stoneware to obtain accurate tile geometry. The particle size of the polishing residue is less than 0.2 mm, and the residue of the mixture-preparation shop is less than 40 microns. Residue of the mixture-preparation shop is formed when cleaning equipment: mills, mixers, slipways, etc. The ways of utilization of by-product are follows: as a filler for the silicate production; for polymer-cement, water-dispersion and oil paints; as a filler for the production of roofing materials, bituminous roofing mastics based on organic binders; raw materials for the production of foam glass materials and products.

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Carbon Nanosorbent for Purification Different Biomolecules

Eurasian Chemico-Technological Journal ◽

10.18321/ectj98 ◽

2011 ◽

Vol 14 (1) ◽

pp. 41

Author(s):

Z.A. Mansurov ◽

A.R. Kerimkulova ◽

S.A. Ibragimova ◽

E.Y. Gukenheimer

Keyword(s):

Carbon Nanostructures ◽

Large Scale ◽

Carbon Materials ◽

Raw Materials ◽

Carbon Sorbent ◽

Nanostructured Carbon ◽

Lipid Complex ◽

Carbon Sorbents ◽

Physico Chemical ◽

Chemical Studies

The article presents the results of physico-chemical studies on the development of nanostructured carbon materials from domestic raw materials. Were obtained and tested micro-mesoporous carbon sorbents for molecular-sieve chromatography of markers and investigated the applicability of carbon sorbents for the separation of protein-lipid complex, and plant bio-stimulator. Carbon sorbents have well-developed porous structure but their disadvantage is the weak mechanical<br />strength. Recently it was shown that some carbon nanostructures have enormous strength. Thus arose the need to give the nano structured elements to carbon sorbent. Creating carbon sorbents containing nanocarbon structure was the aim of our study, as these by sorbents will be very useful for large-scale purification of biomolecules.

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PHYSICAL CHEMICAL STUDIES OF THE SURFACTANT DILAURYLDIMETHYLAMMONIUM BROMIDE (DLDMAB): AGGREGATION AND CATALYTIC PROPERTIES

Southern Brazilian Journal of Chemistry - Southern Brazilian Journal of Chemistry, Volume 28, No. 28, 2020 ◽

10.48141/sbjchem.v17.n17.2009.23_2009.pdf ◽

2009 ◽

Vol 17 (17) ◽

pp. 21-32

Author(s):

Elizabeth Fatima de Souza ◽

Silvia Dani ◽

Lavinel G. IONESCU

Keyword(s):

Thermodynamic Parameters ◽

Catalytic Properties ◽

Activation Parameters ◽

Critical Micellar Concentration ◽

Physical Chemical ◽

Chemical Studies ◽

Diphenyl Phosphate ◽

C 32 ◽

Free Energy Of Micellization ◽

Hydrolysis Of

The micellization of dilauryldimethylammonium bromide (DLDMAB) in water was studied by using surface tension measurements. The critical micellar concentration (CMC) was determined at 25°C, 32°C and 40°C and thermodynamic parameters such as the free energy of micellization (∆G°mic), enthalpy (∆H°mic), and entropy (∆S°mic) of micellization were measured. The CMC at 25°C was 4.93 x 10-5 M and the corresponding values of the thermodynamic parameters were: ∆G°mic = -5.87 kcal/mol; ∆H°mic = -1.12 kcal/mol and ∆S°mic = +16.00 e.u. Micelles of the surfactant DLDMAB act as catalysts for the alkaline hydrolysis of p-nitrophenyl diphenyl phosphate (NPDPP) with a maximum catalytic factor of approximately 120 compared to 80 for CTAB. Typical activation parameters measured for 1.00 x 10-3 M surfactant and 0.005 M NaOH were: Ea = 9.7 kcal/mo/; ∆H°≠ = 9.1 kcal/mol; ∆G°≠ = 19.6 kcal/mol and ∆S°≠ = -33.9 e.u. The kinetic results were also analyzed in terms of the pseudo-phase ion-exchange models (PPIE) and showed that the model is applicable to describe the experimental results.

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Resource-Saving Technologies in the Thermal Insulation-Structural Foam Glass Production

Materials Science Forum ◽

10.4028/www.scientific.net/msf.974.356 ◽

2019 ◽

Vol 974 ◽

pp. 356-361

Author(s):

O.V. Kuznetsova ◽

N.D. Yatsenko ◽

A.I. Subbotin ◽

M.Yu. Klimenko

Keyword(s):

Building Materials ◽

Raw Materials ◽

Foam Glass ◽

Scientific Research ◽

Glass Production ◽

Environmental Safety ◽

Resource Saving ◽

Structural Foam ◽

Safety Requirements ◽

Research Areas

The modern building materials market places high demands on heat-insulating and heat-insulating structural materials. In this connection, the issues of developing high-quality building materials obtained on the resource-saving technologies basis allowing to solve two interrelated problems are topical. The first problem is the industrial waste generated and existing stocks disposal. The second is associated with a decrease in the traditional raw materials deficit [1]. These problems solution, combining rational technological solutions, is based on the scientific research achievements in this area, in particular in the foam glass production. The priority scientific research areas in the foam glass materials production are the developments related to the study, the new raw materials use and the production of foam glass mixture compositions on their basis, which provide, along with the necessary performance properties, high environmental safety requirements [2, 3].

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Effects of Meat Type, Storage Time and Temperature on Various Physical, Chemical and Microbiological Characteristics of Ground Pork

Journal of Food Protection ◽

10.4315/0362-028x-50.11.948 ◽

1987 ◽

Vol 50 (11) ◽

pp. 948-951 ◽

Cited By ~ 4

Author(s):

DONNA S. BENTLEY ◽

JAMES O. REAGAN ◽

NELSON A. COX ◽

J. STAN BAILEY

Keyword(s):

Storage Temperature ◽

Raw Materials ◽

Thiobarbituric Acid ◽

Bacterial Count ◽

Total Bacterial Count ◽

Pork Sausage ◽

Physical Chemical ◽

Microbiological Characteristics ◽

Plate Counts ◽

Meat Type

Whole-hog sausage was prepared from hot- and cold-boned pork raw materials to determine the effects of meat type, storage temperature and length of storage on various processing and bacteriological characteristics. Samples were stored at −1 and 4°C for 0, 28 and 56 d. Various physical, chemical and microbiological properties of the sausage were evaluated. Thiobarbituric acid (TBA) values were not affected by meat type (pre or postrigor). Hunter-Color values varied significantly among the meat types and storage temperatures. Total bacterial counts varied significantly among the hot- and cold-boned pork sausage samples (day 0). Cold-boned sausage stored at −1°C had lower plate counts of the various treatments for days 28 and 56. Pseudomonas was the predominant organism found in hotand cold-boned sausage samples. Hot-boned sausage exhibited a more diverse bacterial population than did cold-boned sausage. More gram-positive organisms were found in hot-boned sausage samples. Cold-boned sausage had a lower total bacterial count at day 0 and maintained lower counts and therefore a longer shelf life throughout the study when held at −1°C.

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