Abstract: Provided herein are systems and methods for multi-band helical antennas. The multi-band concentric helical antenna system includes a base, a first helical antenna and at least a second helical antenna, wherein the second helical antenna is within the first helical antenna, wherein the first helical antenna has a first frequency band and the second helical antenna has a second frequency band which is not the same as the first frequency band, and wherein the first helical antenna and the second helical antenna are connected to the base and positioned within an aperture of the base. The multi-band helical antenna system may further include N additional antennas, and may be used as a single radiating element or in an array of radiating elements.

Abstract: The invention relates to a composition for producing a fermented milk product comprising: (i) a starter culture comprising a glucose-fermenting Streptococcus thermophilus (St) strain and a glucose-fermenting Lactobacillus delbrueckii subsp. bulgaricus (Lb) strain; and (ii) a glucose-deficient Streptococcus thermophilus (St) strain, wherein said St strain is galactose-fermenting and carries a mutation in the DNA sequence of the glcK gene encoding a glucokinase protein, which mutation inactivates the glucokinase protein or has a negative effect on expression of the gene.

Abstract: A single-piece corrugated component, such as a feed horn, of an antenna includes a main body having a generally hollowed truncated pyramidal or conical shape which defines a body axis. The body extends from a base to an aperture, and includes a plurality of corrugations centered about the body axis, respectively. Each corrugation has a frustopyramidal ridge extending inwardly and locally perpendicularly from an inner surface of the main body at a ridge angle relative to the body axis varying between 10-60 degrees in a direction either toward the first end or the second end. A plurality of the frustopyramidal ridges have a respective inward virtual extension thereof crossing the body axis before intersecting the main body. A method of manufacturing the corrugated component includes the step of printing the component using an additive manufacturing technology.

Abstract: A single-piece corrugated component, such as a feed horn, of an antenna includes a main body having a generally hollowed truncated pyramidal or conical shape which defines a body axis. The body extends from a base to an aperture, and includes a plurality of corrugations centered about the body axis, respectively. Each corrugation has a frustopyramidal ridge extending inwardly and locally perpendicularly from an inner surface of the main body at a ridge angle relative to the body axis varying between 10-60 degrees in a direction either toward the first end or the second end. A plurality of the frustopyramidal ridges have a respective inward virtual extension thereof crossing the body axis before intersecting the main body. A method of manufacturing the corrugated component includes the step of printing the component using an additive manufacturing technology.

Abstract: The invention relates to a composition for producing a fermented milk product comprising: (i) a starter culture comprising a glucose-fermenting Streptococcus thermophilus (St) strain and a glucose-fermenting Lactobacillus delbrueckii subsp. bulgaricus (Lb) strain; and (ii) a glucose-deficient Streptococcus thermophilus (St) strain, wherein said St strain is galactose-fermenting and carries a mutation in the DNA sequence of the glcK gene encoding a glucokinase protein, which mutation inactivates the glucokinase protein or has a negative effect on expression of the gene.

Abstract: A single-piece corrugated component, such as a feed horn, of an antenna includes a main body having a generally hollowed frustopyramidal shape which defines a body axis. The body extends from a base to an aperture, and includes a plurality of generally polygonal corrugations centered about the body axis, respectively. Each corrugation has a frustopyramidal ridge extending inwardly of the main body at an angle relative to the body axis varying between 10-60 degrees in a direction either toward the first end or the second end. A plurality of the frustopyramidal ridges are oriented to have a respective inward virtual extension thereof crossing the body axis and intersecting the main body. A method of manufacturing the corrugated component includes the step of printing the component using an additive manufacturing technology.