A method of manufacturing polycrystalline abrasive elements consisting of micron, sub-micron or nano-sized ultrahard abrasives dispersed in micron, sub-micron or nano-sized matrix materials. A plurality of ultrahard abrasive particles having vitreophilic surfaces are coated with a matrix precursor material in a refined colloidal process and then treated to render them suitable for sintering. The matrix precursor material can be converted to an oxide, nitride, carbide, oxynitride, oxycarbide, or carbonitride, or an elemental form thereof. The coated ultrahard abrasive particles are consolidated and sintered at a pressure and temperature at which they are crystallographically or thermodynamically stable.

The present invention relates to a fertilizing composition comprising a glass matrix, wherein said glass matrix comprises: at least three forming oxides, wherein said at least three forming oxides are SiO.sub.2, P.sub.2O.sub.5 and B.sub.2O.sub.3, and have a ratio by weight between SiO.sub.2/P.sub.2O.sub.5 comprised from 1 to 5 and a ratio by weight between SiO.sub.2/B.sub.2O.sub.3 comprised from 5 to 25;—at least one microelement; said fertilizing composition optionally also comprising citric acid and/or at least one humic substance. The subject matter of the present invention further relates to an aggregate comprising said fertilizing composition, at least one thickening agent and optionally at least one further microelement that is identical to or different from the at least one microelement present within the glass matrix of the fertilizing composition. The present invention also relates to a method for fertilizing herbaceous and/or arboreal crops which comprises administering said composition or said aggregate to the crops. Finally, the present invention regards the use of the fertilizing composition or of the aggregate comprising said composition to fertilize herbaceous and/or arboreal crops.

A quantum dot (“QD”) glass aging device including a bottom part including a flat surface defined by a first direction and a second direction intersecting the first direction; a side wall part including a side surface defined by the first direction and a third direction intersecting the bottom part, and a seating part disposed between the bottom part and the side wall part. The seating part includes a plurality of protrusion parts extending in the first direction and arranged in the second direction. A plurality of QD glasses is arranged on the plurality of protrusion parts. A plurality of light sources is disposed in the plurality of grooves defined between the protrusion parts and between the side wall part and a first protrusion part adjacent to the side wall part. Heights of upper surfaces of the protrusion parts gradually decrease from the side wall part to the bottom part.

The present invention provides a red paint for ceramic decoration, including a glass matrix, and a red colorant and a protective material that are intermingled in the glass matrix. The red colorant contains gold nanoparticles and silver nanoparticles. The protective material contains silica nanoparticles.

Multicolored glass-based articles and methods of manufacture are disclosed. The method includes forming a glass-based part and exposing a first region to radiation and a second region to radiation such that the first and second regions have different sized metallic nanoparticles, resulting in a multicolored glass article.

Method for manufacturing coloured glass-ceramic slab articles from a base mix, comprising the steps of a) preparing a mix comprising a colouring pigment, at least one binder and a preponderant amount of a glass frit having a specific composition, b) distributing the mix in a forming support, c) compacting the mix, d) drying the mix, e) sintering the compacted and dried mix by firing to obtain a slab article, and f) cooling the articles under conditions such as to prevent—even partial—devitrification and/or crystallization of the glass frit. The invention also relates to a glass frit for manufacturing base mixes and a coloured glass-ceramic slab article obtained from the base mix.

A method of manufacturing a polarizing glass sheet includes subjecting, while heating, a glass preform sheet containing metal halide particles to down-drawing, to thereby provide a glass member having stretched metal halide particles dispersed in an aligned manner in a glass matrix, and subjecting the glass member to reduction treatment to reduce the stretched metal halide particles, to thereby provide a polarizing glass sheet. A shape of the glass preform sheet during the down-drawing satisfies a relationship of the following expression:
L.sub.1/W.sub.1≥1.0
where L.sub.1 represents a length between a portion in which a width of the glass preform sheet has changed to 0.8 times an original width and a portion in which the width of the glass preform sheet has changed to 0.2 times the original width W.sub.0, and W.sub.1 represents a length equivalent to 0.5 times the original width W.sub.0 of the glass preform sheet.

A method of manufacturing a polarizing glass sheet includes subjecting, while heating, a glass preform sheet containing metal halide particles to down-drawing, to thereby provide a glass member having stretched metal halide particles dispersed in an aligned manner in a glass matrix, and subjecting the glass member to reduction treatment to reduce the stretched metal halide particles, to thereby provide a polarizing glass sheet. A shape of the glass preform sheet during the down-drawing satisfies a relationship of the following expression:
L.sub.1/W.sub.1≥1.0
where L.sub.1 represents a length between a portion in which a width of the glass preform sheet has changed to 0.8 times an original width and a portion in which the width of the glass preform sheet has changed to 0.2 times the original width W.sub.0, and W.sub.1 represents a length equivalent to 0.5 times the original width W.sub.0 of the glass preform sheet.

A composition to immobilize nuclear containing waste comprising at least one radioactive element or alloy of uranium, graphite, magnesium, and aluminum, and a method of using the same to immobilize the nuclear containing waste into a solid wasteform. The composition comprises at least one mineral phase forming element or compound for reacting with the at least one radioactive element or alloy. The composition further comprises at least one glass-forming element or compound to form a glass phase that will incorporate waste radioisotopes and impurities that do not react with the mineral phase forming element or compound.

The present invention includes a method of creating high Q empty substrate integrated waveguide devices and/or system with low loss, mechanically and thermally stabilized in photodefinable glass ceramic substrate. The photodefinable glass ceramic process enables high performance, high quality, and/or low-cost structures. Compact low loss RF empty substrate integrated waveguide devices are a cornerstone technological requirement for RF systems, in particular, for portable systems.