Cotton Genotype Response to Early‐Season Cold Temperatures

Abstract FROSTLINE is a fine-grain, columbium-treated carbon steel designed to be an economical solution to structural design requirements at cold temperatures. Available in plate thicknesses up to 6 inches, it offers high levels of toughness at temperatures to 80 F and higher strength levels than conventional carbon steels. Frostline also offers excellent welding characteristics, because of its low carbon equivalent. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, and machining. Filing Code: CS-67. Producer or source: Lukens Steel Company.

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Temperature-Dependent Logic Failure in a GaAs Power Amplifier-Duplexer Module Caused by a Subtle Parasitic Schottky Diode

ISTFA 2014: Conference Proceedings from the 40th International Symposium for Testing and Failure Analysis ◽

10.31399/asm.cp.istfa2014p0450 ◽

2014 ◽

Author(s):

Rose Emergo ◽

Steve Brockett ◽

Pat Hamilton

Keyword(s):

Power Amplifier ◽

Schottky Diode ◽

Production Test ◽

Temperature Dependent ◽

Cold Temperatures ◽

Collector Junction ◽

Power Mode ◽

The Difference ◽

Base Contact ◽

Single Power

Abstract A single power amplifier-duplexer device was submitted by a customer for analysis. The device was initially considered passing when tested against the production test. However, further electrical testing suggested that the device was stuck in a single power mode for a particular frequency band at cold temperatures only. This paper outlines the systematic isolation of a parasitic Schottky diode formed by a base contactcollector punch through process defect that pulled down the input of a NOR gate leading to the incorrect logic state. Note that this parasitic Schottky diode is parallel to the basecollector junction. It was observed that the logic failure only manifested at colder temperatures because the base contact only slightly diffused into the collector layer. Since the difference in the turn-on voltages between the base-collector junction and the parasitic Schottky diode increases with decreasing temperature, the effect of the parasitic diode is only noticeable at lower temperatures.

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Faculty Opinions recommendation of Key amino acid residues conferring enhanced enzyme activity at cold temperatures in an Antarctic polyextremophilic β-galactosidase.

Faculty Opinions – Post-Publication Peer Review of the Biomedical Literature ◽

10.3410/f.732084264.793540200 ◽

2017 ◽

Author(s):

Qiang Cui

Keyword(s):

Enzyme Activity ◽

Amino Acid ◽

Amino Acid Residues ◽

Cold Temperatures

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