Iron containing
-
Ebook "Metals in biology: Applications of high-resolution EPR (Volume 29)" covered include: iron–sulfur cluster-containing proteins, molybdenum enzymes, manganese-containing enzymes and photosystem II, cobalt-substituted enzymes, and hyperfine and quadrupole interactions in vanadium proteins and model complexes.
427p ladongphongthanh1008 22-04-2024 3 2 Download
-
Ebook "Molybdenum cofactors and their role in the evolution of metabolic pathways" explore and review the current knowledge regarding the role of molybdenum in the evolution of biological systems and their interaction with biogeochemical cycles. Special emphasis is placed on biological nitrogen fixation and the nitrogen element cycle. The origin and evolution of molybdenum cofactor biosynthetic pathways as well as the evolutionary significance of molybdenum containing enzymes appearance is analyzed.
79p tudohanhtau1006 29-03-2024 1 1 Download
-
Ebook "Inorganic and organometallic macromolecules: Design and applications" demonstrates the breadth of these properties and some of the specialized analytical techniques that have been developed to characterize them. This book includes a cross-section of novel polymeric materials containing nontraditional atoms and emphasizes current chemical, biological, engineering, ceramic, and optical areas of application. It is intended for those interested in the general areas of biomedicine, catalysis, electronics and light, thermal stability, and analysis of materials.
472p manmanthanhla0201 27-02-2024 6 2 Download
-
In ebook "High- and low-valent tris-N-heterocyclic carbene iron complexes: A study of molecular and electronic structure" high valent iron nitride and oxo species have been proposed as key intermediates in many bio-catalytic transformations, but until now these species have proven exceedingly challenging to isolate and study. Iron complexes in high oxidation states can thus serve as models for iron-containing enzymes to help us understand biological systems or aid our development of more efficient industrial catalysts.
145p nhanphanguyet 28-01-2024 8 2 Download
-
This specification covers iron-base, heat-resisting alloy castings of the 25 % chromium, 12 % nickel class, intended for structural elements, containers, and supports in electric furnaces, petroleum still tube supports, and for similar applications up to 2000°F [1095°C].
4p hth_hn_vn 10-12-2023 5 4 Download
-
This specification covers ductile iron castings for use in pressure containing paper mill dryer rolls at temperatures up to 450°F [230°C]. No precise quantitative relationship can be stated between the properties of the iron in various locations of the same casting or between the properties of a casting and those of a test specimen cast from the same iron (see Appendix X1).
4p hth_hn_vn 10-12-2023 8 5 Download
-
"Standard Test Method for Evaluating the Microstructure of Graphite in Iron Castings" covers the classification of graphite in cast irons in terms of type, distribution, and size by visual comparison to reference photomicrographs. This test method is intended to be applicable for all iron-carbon alloys containing graphite particles, and may be applied to gray irons, malleable irons, compacted graphite irons, and the ductile (nodular) irons.
13p hth_hn_vn 10-12-2023 11 4 Download
-
"Standard Specification for Gray Iron Castings for Pressure-Containing Parts for Temperatures Up to 650°F (350°C)" covers gray iron for castings suitable for pressure-containing parts for use at temperatures up to 650°F (350°C). The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other.
4p hth_hn_vn 10-12-2023 8 3 Download
-
This specification covers austenitic ductile iron, Type D-2M, Classes 1 and 2, for compressors, expanders, pumps, valves, and other pressure-containing parts intended primarily for low-temperature service.
5p hth_hn_vn 10-12-2023 7 3 Download
-
This specification covers iron-chromium-nickel, highalloy tubes made by the centrifugal casting process intended for use under pressure at high temperatures. The grades of high alloys detailed in Table 1 are intended for applications requiring strength and resistance to corrosion and scaling at high temperatures.
6p hth_hn_vn 10-12-2023 6 5 Download
-
This specification covers deformed and plain carbonsteel bars in cut lengths and coils for concrete reinforcement. Steel bars containing alloy additions, such as with the Association for Iron and Steel Technology and the Society of Automotive Engineers series of alloy steels, are permitted if the resulting product meets all the other requirements of this specification. The standard sizes and dimensions of deformed bars and their number designations are given in Table 1.
8p hth_hn_vn 10-12-2023 7 6 Download
-
This specification covers statically cast dual metal rolls with the outer layer of the roll body being chilled white iron of different chemical composition than the core and journals of the roll which is gray cast iron. The castings are suitable for pressure containing parts, the design strength of which is based on the gray iron portion of the cylinder.
2p hth_hn_vn 10-12-2023 9 4 Download
-
In this paper, some new polythiophenes containing benzo[d]thiazole heterocycle were synthesized by oxidative polymerization in chloroform using iron(III) chloride as a catalytic oxidant.
8p viberkshire 09-08-2023 5 3 Download
-
Viburnum mullaha is a popular wild edible fruit widely distributed in Nepal’s mid-hills. Locals consume the fruits of the plants raw and use them to treat a variety of diseases. High value of fat (15%) and protein (3.94%) was evaluated in the seed compared to the pulp with fat 2.1% and protein 1.17%. Both the pulp and the seed exhibited high values of total phenolic content (3346.1 1 ± 0.05 and 2331.03 ± 0.02 mg QAEs/100 g respectively).
9p lyhuyenthu 31-01-2023 6 2 Download
-
This paper reports the application of the \(R{u^{2 + }}, C{u^ + }, and F{e^{2 + }}\) complexes in form of RuL2(SCN)2, CuL2(SCN)2 for dye-sensitized solar cell (DSSC) development. The calculation results, given by quantum chemistry, demonstrated that the complex containing copper is more suitable than the one containing iron. The modification of Cu(I) complex by using various numbers of ligands enhanced photon absorption capacity as well as the absorption range.
5p runordie3 27-06-2022 13 2 Download
-
The kinetics of the iron electrodeposition reaction from a plating bath containing trivalent iron ions is investigated in the present work. The electrochemical reaction is stated to proceed via the formation of relatively stable intermediates: Fe(II) ions. Only a part of the total amount of Fe(II) ions formed at the first stage of Fe(III) discharge is reduced further, producing metal iron. The effect of polyhexamethyleneguanidine hydrochloride (with an average molecular weight of 1000) on the iron deposition is ascertained.
10p langthannam 29-12-2021 7 0 Download
-
Oxidation of bisphenol-A (BPA) was investigated using a sonophoto Fenton-like hybrid process under visible light irradiation in the presence of iron-containing perovskite LaFeO3 catalysts. For this purpose, firstly the perovskite catalyst (LaFeO3) was prepared by the sol-gel method and calcined at different temperatures (500, 700, and 800◦C). The prepared catalysts were characterized using XRD, SEM, FTIR, nitrogen adsorption, UV-vis DRS, and ICP/OES measurements.
18p langthannam 29-12-2021 13 0 Download
-
In the current research, the sulfonated metal–organic framework loaded on iron oxide nanoparticles, Fe3O4@MIL100(Fe)-OSO3H, has been synthesized and utilized as a Fenton-like catalyst for the decolorization of aqueous solutions containing methyl orange (MO) dye as a model organic pollutant. The morphology and structure of the catalyst were characterized by X-ray powder diffraction, transmission electron microscopy, Brunauer–Emmett–Teller analysis, thermogravimetric analysis, Fourier transform infrared spectroscopy, and UV-Vis diffuse reflectance spectroscopy.
14p langthannam 29-12-2021 19 0 Download
-
The partial substitution of potassium atoms by strontium atoms in initial matrix K3Fe2(PO4)3 with formation of complex phosphates K3−2xSrx Fe2(PO4)3 (x = 0.75, 1.0, and 1.25) was determined using a solid-state reaction method. According to powder X-ray diffraction (XRD) data, the prepared phosphates with x = 1.0 and 1.25 crystallize in a cubic system (space group P213) and belong to langbeinite family compounds, while for the sample with x = 0.75 a mixture of langbeinite-type phase and a minor amount of K3Fe2(PO4)3 was obtained.
7p tudichquannguyet 29-11-2021 16 0 Download
-
Glutamate synthases are complex iron-sulfur flavoproteins containing functional domains involved in the control and coordination of their catalytic activities in annual plants. In conifers, partial cDNA sequences for GOGATs have been isolated and used for gene expression studies. However, knowledge of the gene structure and of phylogenetic relationships with other plant enzymes is quite scant.
12p vibeauty 23-10-2021 14 0 Download