摘要:
Provided are methods for producing carbonate-containing compositions comprising silicon-based material (e.g., pozzolanic material) from a source of carbon dioxide, a divalent cation-containing solution, and a source of proton-removing agents. In such methods, divalent cations of the divalent cation-containing solution are provided by digestion of material comprising metal silicates. Also provided are methods for producing carbonate-containing compositions comprising little or no silicon-based material. In such methods, silicon-based material (e.g., silica, unreacted or undigested silicates, aluminosilicates, etc.) may be separated and processed separately from carbonate-containing compositions. Silicon-based material and carbonate-containing material may be blended at a later stage to produce a pozzolanic material, which may be further processed and blended with, for example, Portland cement.
摘要:
Provided are methods for producing carbonate-containing compositions comprising silicon-based material (e.g., pozzolanic material) from a source of carbon dioxide, a divalent cation-containing solution, and a source of proton-removing agents. In such methods, divalent cations of the divalent cation-containing solution are provided by digestion of material comprising metal silicates. Also provided are methods for producing carbonate-containing compositions comprising little or no silicon-based material. In such methods, silicon-based material (e.g., silica, unreacted or undigested silicates, aluminosilicates, etc.) may be separated and processed separately from carbonate-containing compositions. Silicon-based material and carbonate-containing material may be blended at a later stage to produce a pozzolanic material, which may be further processed and blended with, for example, Portland cement.
摘要:
Provided are methods for producing carbonate-containing compositions comprising silicon-based material (e.g., pozzolanic material) from a source of carbon dioxide, a divalent cation-containing solution, and a source of proton-removing agents. In such methods, divalent cations of the divalent cation-containing solution are provided by digestion of material comprising metal silicates. Also provided are methods for producing carbonate-containing compositions comprising little or no silicon-based material. In such methods, silicon-based material (e.g., silica, unreacted or undigested silicates, aluminosilicates, etc.) may be separated and processed separately from carbonate-containing compositions. Silicon-based material and carbonate-containing material may be blended at a later stage to produce a pozzolanic material, which may be further processed and blended with, for example, Portland cement.
摘要:
A single sideband signal is generated from an input optical signal. An optical phase modulator performs optical phase modulation on the input optical signal in accordance with a control signal to produce the single sideband signal. A converter converts the input optical signal into a corresponding electrical signal. A control signal generator generates the control signal in response to an optical signal pulse shape of the input optical signal.
摘要:
The optical single sideband modulator includes an amplitude modulator and a converter comprising a semiconductor optical amplifier, using the chirp effect to convert an amplitude modulated optical signal into a single sideband signal without a filter for eliminating one of the sidebands.
摘要:
There is described a transmission in a burst switching network, whereby data packets are collected to form a burst which is provided with a header. A loop-free common control channel is provided in the optical burst switching network to which all network nodes have access. Headers are transmitted by the loop-free control channel such that a header is distributed virtually in parallel to all network nodes and processed virtually in parallel in the network nodes.
摘要:
A single sideband signal is generated from an input optical signal. An optical phase modulator performs optical phase modulation on the input optical signal in accordance with a control signal to produce the single sideband signal. A converter converts the input optical signal into a corresponding electrical signal. A control signal generator generates the control signal in response to an optical signal pulse shape of the input optical signal.