INVESTIGATION OF EROSION RESISTANCE OF GRAY-BROWN SOILS IN THE SOUTHEASTERN SLOPES OF THE GREATER CAUCASUS

In recent years, sharp changes have occurred in the state of sloping lands of Azerbaijan. There was tension from the influence of the anthropogenic factors on the mountain slopes. The fact that the erosion process is rein-forced in the research site. Due to lack of agrotechnical measures on the slopes erosion process has been strength-ened, soil flooded with soil, physical and chemical properties of the soil have deteriorated, nutritional elements are reduced, vegetation is reduced and destruction limit. For some reason, the purpose of the research was Aqsu, two land cuts were set up to determine the degree of actual erosion in the Qizmeydan village. prevent erosion intensity, take preventive measures to take and implement appropriate measures.

IMPACT OF EROSION PROCESS TO FERTILITY OFMOUNTAIN-CHERNOZEM SITUATING IN SOUTH-EAST SLOPE OF GREAT CAUCASIAN

JOURNAL OF ADVANCES IN NATURAL SCIENCES ◽

10.24297/jns.v5i1.7939 ◽

2018 ◽

Vol 5 ◽

pp. 389-394

Author(s):

Soltanzade Gasim Ali oglu

Keyword(s):

Preventive Measures ◽

Chemical Properties ◽

Anthropogenic Factors ◽

Sharp Change ◽

Erosion Process ◽

Set Up ◽

Physical And Chemical ◽

The Village ◽

The complexity, sharp change in the relief condition, the tension of the anthropogenic factors in the Shamakhi region, where we have investigated, has intensified the erosion process. Because of the lack of agrotechnical measures on the slopes, the erosion process has been intensified, the soil is flooded with soil, the physical and chemical properties of the soil have deteriorated, the nutritional elements have declined, the vegetation has been degraded and reached the limit of destruction. For some reason, the object of research was Shamakhi two land cuts were set up to determine the degree of actual erosion of the soil in the village of Melam. which will result in preventive measures to prevent erosion intensities and to develop and implement appropriate preventive measures

Environment Risk Characteristics and Preventive Measures on Carbon Disulfide

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.121-122.1 ◽

2010 ◽

Vol 121-122 ◽

pp. 1-4 ◽

Cited By ~ 3

Author(s):

Ji Hong Zhou ◽

Bin Wang ◽

Xiao Bin Zhou ◽

Jian Zhang

Keyword(s):

Carbon Disulfide ◽

Environmental Risk ◽

Preventive Measures ◽

Chemical Properties ◽

Environmental Decision Making ◽

Risk Characteristics ◽

Physical And Chemical ◽

Important Basis ◽

At present, the environmental risk has become science foundation and one of important basis of the environmental risk management and environmental decision-making. This paper based on the chemical properties of carbon disulfide including physical and chemical properties, toxicity, explosive harms characteristics are studied and puts forward some preventive measures.

Proceedings of the Royal Society of London Series A - Mathematical and Physical Sciences ◽

The nature of the sulphur-oxygen bond

10.1098/rspa.1950.0026 ◽

1950 ◽

Vol 200 (1062) ◽

pp. 409-428 ◽

Cited By ~ 52

Keyword(s):

Molecular Orbital ◽

Electronic Structures ◽

Chemical Properties ◽

Orbital Method ◽

Bond Strengths ◽

Set Up ◽

Physical And Chemical ◽

Oxygen Bond ◽

The electronic structures of certain molecules containing oxy-sulphur bonds are analyzed insome detail by means of the molecular orbital method. I t is possible to make rough calculations which, despite the complexity of the system s considered, are nevertheless reasonably reliable. The physical and chemical properties of sulphur dioxide, sulphur trioxide and molecules of the types R 2 SO 2 and R 2 SO are discussed on the basis of these structures. In all these molecules it appears that the oxy-sulphur linkages are best described as double-bonded. A successful correlation between the molecular orbital criterion of bond strengths, namely, the bond orders, and the oxy-sulphur bond force constants may be set up. The measure of agreement attained between observed and predicted properties is quite satisfactory.

Environmental Risk Study on CH3NO2

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.179-180.865 ◽

2011 ◽

Vol 179-180 ◽

pp. 865-868

Author(s):

Ji Hong Zhou ◽

Wei Xia Chen

Keyword(s):

Risk Management ◽

Environmental Risk ◽

Preventive Measures ◽

Chemical Properties ◽

Chemical Substance ◽

Environmental Risk Management ◽

Physical And Chemical ◽

And Chemical Properties ◽

Environmental Decision

Environmental risk study is very important because of existence of chemical substance that probably leads to a lot of harm. At present, the environmental risk has become science foundation and one of important basics of the environmental risk management and environmental decision-making.This paper based on the chemical properties of nitromethane including physical and chemical properties, toxicity, explosive harms characteristics are studied and puts forward some preventive measures.

Impact of Insufficient Cleaning on the Quality of Molybdenum Layer Applied by Thermal Spraying

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.801.35 ◽

2013 ◽

Vol 801 ◽

pp. 35-40

Author(s):

Marián Bujna ◽

Miroslav Prístavka ◽

Pavol Kaplík

Keyword(s):

Erosion Resistance ◽

Thermal Spraying ◽

Chemical Properties ◽

Poor Quality ◽

High Degree ◽

Physical And Chemical ◽

The Impact ◽

Thermal spraying influences several physical and chemical properties of the coating surface. The most important of them are hardness, density, porosity, corrosion resistance and adhesion. This technology of surface treatment of material is often used for its high degree of hardness. Hardness and erosion resistance are the parameters that need to be achieved particularly in working conditions where there is excessive component wear. In this paper, we deal with the impact of purifying on the quality of molybdenum layer. Insufficient cleaning may result in a poor quality of the sprayed layer. Our aim is to measure and analyse the quality of molybdenum layer thickness applied by thermal spraying after insufficient cleaning.

Physical and Chemical Properties of Volcanic Ejecta Produced by the Eruption of Mt. Kirishima Shinmoe-dake, Japan -A Case Study After the Explosive Eruption on March 25, 2018-

10.21203/rs.3.rs-169426/v1 ◽

2021 ◽

Author(s):

Hiromi Akita

Keyword(s):

Particle Size ◽

Explosive Eruption ◽

Chemical Properties ◽

Infiltration Capacity ◽

Volcanic Ejecta ◽

Set Up ◽

Physical And Chemical ◽

Cylindrical Frame ◽

Abstract The purpose of this study was to clarify the physical and chemical properties of volcanic ejecta that fell after the explosive eruption on March 25, 2018 at Shinmoe-dake. In order to investigate the infiltration capacity, which is one of the physical properties of volcanic ejecta, plots were set up on the outer forest plain, the forest plain, and the forest talus, and a cylindrical frame test was conducted with reference to the method of Takeshita (2011). In addition, soil samples were collected at the three locations where the cylindrical frame test was conducted. The final infiltration capacity of 38-92 mm / h appeared lower in the forest talus than in the forest plain. It is considered that this is due to the small particle size distribution of 0.1 mm or more, regardless of the particle size of the silt / clay particle size classification. When the chemical properties of the collected volcanic ejecta were examined, Ca and SO4 were contained at high values. Since these compounds become the source of gypsum that reduces infiltration capacity when they react with water, it has become clear that they have the potential to contribute to the generation of debris-flow as a chemical property.

Correlation of Some of the Physical and Chemical Properties of the Sea With the Chemical Constitution of the Algae

Journal of the Marine Biological Association of the United Kingdom ◽

10.1017/s002531540002350x ◽

1949 ◽

Vol 28 (3) ◽

pp. 673-699 ◽

Cited By ~ 54

Author(s):

W. A. P. Black ◽

E. T. Dewar

Keyword(s):

Sea Water ◽

Inorganic Nitrogen ◽

Vertical Mixing ◽

Chemical Properties ◽

Inshore Waters ◽

Set Up ◽

Reduced Rate ◽

June July ◽

Physical And Chemical ◽

Monthly samples of the Laminariaceae, L. saccharina and L. cloustoni, from three localities on the Argyllshire coast have been taken from March 1948 to March 1949, and analysed for dry matter, ash, mannitol, laminarin, crude proteins, inorganic nitrogen and alginic acid, and the seasonal variation in these constituents correlated with the changes in composition of the sea water.The results show that a correlation does exist and that a period of rapid photosynthesis occurs from March to June/July, but is restricted in July/August when nitrate is undetectable in the water and phosphate is as low as 0·16–0–20 mg. atom/m.3. The replenishment of the photosynthetic layer with nutrients is retarded in July/August, apparently due to the warming of the inshore waters, which may set up a thermocline restricting vertical mixing.The autumn cooling of the uppermost waters facilitates vertical mixing, regenerating the nutrients in the photosynthetic region, and a second burst of photosynthesis at a reduced rate from the spring ‘outburst’ occurs in October/November.

Study of the Influence of Polymer Properties on Injected Parts and the Controlling Means

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.101-102.982 ◽

2011 ◽

Vol 101-102 ◽

pp. 982-985

Author(s):

Hong Lin Li ◽

Zhi Xin Jia

Keyword(s):

Injection Molding ◽

Erosion Resistance ◽

Impact Resistance ◽

Chemical Properties ◽

Injection Pressure ◽

Polymer Properties ◽

Degree Of Orientation ◽

Degree Of Crystallization ◽

Physical And Chemical ◽

At present, the trends for injection molding are higher precision, ultra-thin and light weight, and there are many harsh requirements on injected parts. For the parts manufactured by injection molding, crystallization and orientation of polymer affect the properties of the parts greatly. Crystallization and orientation affect the physical and chemical properties of the injected part, such as strength, stiffness, impact resistance, erosion resistance and so on. According to their formation mechanism, this paper presents the layout and dimensions of the coolant lines, the position, shape and dimensions of the gate, and the injection pressure etc., which play an important role for controlling the degree of crystallization and the direction and degree of orientation.

Cyclodextrins as selectors for mycotoxin recognition

World Mycotoxin Journal ◽

10.3920/wmj2008.1022 ◽

2008 ◽

Vol 1 (4) ◽

pp. 397-406 ◽

Cited By ~ 13

Author(s):

G. Galaverna ◽

C. Dall'Asta ◽

R. Corradini ◽

A. Dossena ◽

R. Marchelli

Keyword(s):

Complex Formation ◽

Chemical Properties ◽

Analytical Techniques ◽

Practical Application ◽

Inclusion Complex Formation ◽

Guest Molecules ◽

Set Up ◽

Physical And Chemical ◽

This review deals with the applications of cyclodextrins as selectors for mycotoxin recognition. Complexation by cyclodextrins via formation of inclusion (host-guest) complexes induces significant changes in the physical and chemical properties of mycotoxins as guest molecules, effects that can be used in a variety of analytical techniques. Changes in chromatographic and electrophoretic properties and their applications to set up new separation methods are covered. Among these changes, a significant effect is the enhancement of the mycotoxin fluorescence upon inclusion, a phenomenon which provides a simple and convenient method to significantly increase the sensitivity of fluorescence-based trace analysis. The practical application of this phenomenon to set up new analytical methods is described. Studies on the mechanism of inclusion complex formation are also reported.

Statistical criteria of stellar population types

Symposium - International Astronomical Union ◽

10.1017/s0074180900053304 ◽

1966 ◽

Vol 24 ◽

pp. 101-110

Author(s):

W. Iwanowska

Keyword(s):

Stellar Population ◽

Chemical Properties ◽

Spectrophotometric Study ◽

Population Type ◽

The Galaxy ◽

Distribution Parameters ◽

Physical And Chemical ◽

Statistical Criteria ◽

In connection with the spectrophotometric study of population-type characteristics of various kinds of stars, a statistical analysis of kinematical and distribution parameters of the same stars is performed at the Toruń Observatory. This has a twofold purpose: first, to provide a practical guide in selecting stars for observing programmes, second, to contribute to the understanding of relations existing between the physical and chemical properties of stars and their kinematics and distribution in the Galaxy.