scholarly journals Vorschlag zur bodenartlichen Kennzeichnung von Wattsedimenten

1960 ◽  
Vol 11 (1) ◽  
pp. 190-195
Author(s):  
J. L. Ruyter
Keyword(s):  
Grain Size ◽  
Physical Properties ◽  
Tidal Flat ◽  
Soil Analysis ◽  
Boundary Values ◽  
Special Mapping ◽  
Tidal Flat Sediments

Abstract. During a special mapping in the tidal flat of Eastern Frisia the question arose as to how the soils in this area could most suitably be classified and represented on maps (grain size mixtµres). The grouping suggested in this paper is done according to chemical and physical properties of these recent tidal flat sediments. Simultaneously conformity with the soil definitions of the marsh mapping by the „Niedersächsisches Landesamt für Bodenforschung" was tried to be reached. Based on the soil analysis, the most outstanding qualities of tidal flat sediments found here and their relations are being discussed. Furthermore the boundary values for the classification are investigated.

HAYNES ALLOY No. 625SQ

Alloy Digest ◽  
2003 ◽  
Vol 52 (8) ◽  
Keyword(s):  
Grain Size ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
Fatigue Resistance ◽  
Heat Treating ◽  
Temperature Performance ◽  
Haynes Alloy

Abstract Haynes 625SQ alloy is a modification of Haynes 625 alloy (see Alloy Digest Ni-354, January 1988) with tighter controls on chemistry and a finer grain size for fatigue resistance up to 680 deg C (1250 deg F). This datasheet provides information on composition, physical properties, microstructure, elasticity, and tensile properties as well as fatigue. It also includes information on high temperature performance as well as heat treating. Filing Code: Ni-612. Producer or source: Haynes International Inc.

BLACK DIAMOND STANDARD

Alloy Digest ◽  
1975 ◽  
Vol 24 (1) ◽  
Keyword(s):  
Grain Size ◽  
Physical Properties ◽  
Surface Treatment ◽  
Tool Steel ◽  
Electric Furnace ◽  
Heat Treating ◽  
Case Depth ◽  
Specialty Metals ◽  
Lower Carbon

Abstract BLACK DIAMOND STANDARD is an electric-furnace-melted, water-hardening carbon tool steel with an excellent reputation for use as the standard in general shop tools requiring extreme toughness and resistance to shock and impact. In the lower carbon ranges (0.50-0.70% carbon), it is used primarily for tools such as pins, punches, hammers and sledges. Black Diamond may be expected to give uniform and consistent results, although no definite limits of case depth or grain size are regularly guaranteed. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: TS-281. Producer or source: Crucible Specialty Metals Division, Colt Industries.

scholarly journals Factors affecting denitrification and anammox rates in tidal flat sediments

2013 ◽  
Vol 69 (2) ◽  
pp. I_1146-I_1150
Author(s):  
Tomomi SHINOZAKI ◽  
Yusuke UMEDA ◽  
Kazuo MURAKAMI ◽  
Tomohiro KUWAE ◽  
Kouta NAKASE
Keyword(s):  
Tidal Flat ◽  
Factors Affecting ◽  
Tidal Flat Sediments

Evaluation of heavy metal contamination in the tidal flat sediments of Nantong, East China

2021 ◽  
Vol 14 (6) ◽  
Author(s):  
Zhuyou Sun ◽  
Gang Zhang ◽  
Xiuqiang Peng ◽  
Yinjie Wei ◽  
Kaichao Wan ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Tidal Flat ◽  
Metal Contamination ◽  
Heavy Metal Contamination ◽  
East China ◽  
Tidal Flat Sediments

Multifractal characterization of microbially induced magnesian calcite formation in Recent tidal flat sediments

1997 ◽  
Vol 109 (1-2) ◽  
pp. 37-51 ◽  
Author(s):  
Jürgen Kropp ◽  
Arthur Block ◽  
Werner von Bloh ◽  
Thomas Klenke ◽  
H.J. Schellnhuber
Keyword(s):  
Tidal Flat ◽  
Magnesian Calcite ◽  
Tidal Flat Sediments

scholarly journals Analysis of the migration of a pollutant in the soil structure

2019 ◽  
pp. 130-134
Author(s):  
Maria Popa ◽  
Loredana Irena Negoita
Keyword(s):  
Grain Size ◽  
Physical Properties ◽  
Petroleum Product ◽  
Soil Structure ◽  
Petroleum Products ◽  
Depth Of Penetration ◽  
Liquid Petroleum Product ◽  
Accidental Pollution ◽  
Experimental Laboratory ◽  
First Time

This paper presents a study on the migration into a soil structure of a pollutant, a liquid petroleum product. Accidental pollution with a liquid petroleum product can also be considered to crack a transport pipeline. This leads to the displacement of the pollutant in the soil structure, both horizontally and vertically. The study presents an analysis of the migration velocity in the soil structure, with certain physical properties, of both the soil and the pollutant petroleum product. The penetration of petroleum products to a certain depth in soil is influenced by its humidity, grain size and density, pollution intensity, viscosity and pollutant density. It was possible to calculate for the first time at the experimental laboratory level the depth of penetration of the pollutant.

Investigation of Isothermal Treatment on the Structural, Microstructure and Physical Properties of Li2O-Al2O3-SiO2 Glass-Ceramic

2020 ◽  
Author(s):  
Husniyah Aliyah Lutpi ◽  
Hasmaliza Mohamad ◽  
Tuti Katrina Abdullah
Keyword(s):  
Grain Size ◽  
Elevated Temperature ◽  
Physical Properties ◽  
Thermal Shock ◽  
Glass Ceramic ◽  
Crystalline Phase ◽  
Sintering Temperature ◽  
Isothermal Treatment ◽  
Crystalline Phases ◽  
Average Grain Size

Abstract The present work aims to investigate the effects of isothermal treatment on the structural, microstructure and physical properties of Li2O-Al2O3-SiO2 glass-ceramic. Sintering temperature plays a major role in producing the desired lithium aluminosilicate (LAS) glass-ceramic crystalline phases. This work also aims to achieve a low thermal expansion coefficient β-spodumene (LiAlSi2O6) crystalline phase with improved density and lower porosity, which can be useful for the applications with thermal shock properties. The LAS glass-ceramic was fabricated by the melt-quenching technique at 1550 °C for 5 h before being isothermally sintered at an elevated temperature of 900 to 1200 °C for 30 min. The evolution of LAS glass-ceramic crystalline phases was identified using differential thermal analysis and the β-spodumene exothermic peak appeared at 999 °C. Based on the X-ray diffraction results, the complete transformation of β-spodumene from high-quartz solid solution (β-quartz) occurred at 1000 °C. However, the sintering temperature did not change the crystalline phase when sintered above 1000 °C, but the lattice parameter of the crystal structure was slightly altered. Moreover, it was observed that the LAS glass-ceramic grain size increased with temperature, whereby the smallest average grain size recorded (0.61 µm) for LAS glass-ceramic sintered at 1100 °C. Meanwhile, the fully densified LAS glass-ceramic at 1100 ° C was measured at 2.47 g/cm3 with 0.52% porosity. The isothermal treatment at elevated temperature indicated that sintering at 1100 °C provided a denser, less porous, and small average grain size which is preferred for thermal shock resistance applications.

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