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  • 1
    Digitale Medien
    Digitale Medien
    Divergence of Parartemia and Artemia haemoglobin genes (1998)
    Springer
    International journal of salt lake research 7 (1998), S. 171-180 
    Details
    ISSN: 1573-8590
    Schlagwort(e): Artemia ; divergence ; DNA ; haemoglobin ; Parartemia ; protein sequence
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Geographie
    Notizen: Abstract Parartemia is a genus of brine shrimp endemic to Australia which is related to the more widespread and economically important Artemia sp. The expression of a multimeric haemoglobin molecule in Artemia is well documented but in Parartemia only trace levels of a possible haemoglobin have been observed. In this paper we describe the DNA sequence of a domain of a haemoglobin molecule in Parartemia. The derived amino acid sequence suggests that the possible date of divergence about 85 million years ago of the two genera predates the divergence of the C and T polymers of Artemia haemoglobin. This date would correlate with the physical and temporal isolation of Australia in the late Mesozoic.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1023/A:1009068203811
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
    Volltext
  • 2
    Digitale Medien
    Digitale Medien
    Divergence ofParartemia andArtemia haemoglobin genes (1998)
    Springer
    International journal of salt lake research 7 (1998), S. 171-180 
    Details
    ISSN: 1573-8590
    Schlagwort(e): Artemia ; divergence ; DNA ; haemoglobin ; Parartemia ; protein sequence
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Biologie , Geographie
    Notizen: Abstract Parartemia is a genus of brine shrimp endemic to Australia which is related to the more widespread and economically importantArtemia sp. The expression of a multimeric haemoglobin molecule inArtemia is well documented but inParartemia only trace levels of a possible haemoglobin have been observed. In this paper we describe the DNA sequence of a domain of a haemoglobin molecule inParartemia. The derived amino acid sequence suggests that the possible date of divergence about 85 million years ago of the two genera predates the divergence of the C and T polymers ofArtemia haemoglobin. This date would correlate with the physical and temporal isolation of Australia in the late Mesozoic.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF02441885
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    Artikel (Nationallizenzen)
    Volltext
  • 3
    facet.materialart.
    Unbekannt
    A 30 GHz monolithic receive module technology assessment (1988)
    In:  CASI
    Details
    Publikationsdatum: 2019-06-28
    Beschreibung: This report is a technology assessment relevant to the 30 GHz Monolithic Receive Module development. It is based on results obtained on the present NASA Contract (NAS3-23356) as well as on information gathered from literature and other industry sources. To date the on-going Honeywell program has concentrated on demonstrating the so-called interconnected receive module which consists of four monolithic chips - the low noise front-end amplifier (LNA), the five bit phase shifter (PS), the gain control amplifier (GC), and the RF to IF downconverter (RF/IF). Results on all four individual chips have been obtained and interconnection of the first three functions has been accomplished. Future work on this contract is aimed at a higher level of integration, i.e., integration of the first three functions (LNA + PS + GC) on a single GaAs chip. The report presents the status of this technology and projections of its future directions.
    Schlagwort(e): ELECTRONICS AND ELECTRICAL ENGINEERING
    Materialart: NASA-CR-180825 , NAS 1.26:180825
    Format: application/pdf
    Standort Signatur Erwartet Verfügbarkeit
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    NASA TECHNICAL REPORTS
  • 4
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    Unbekannt
    A Ka-band GaAs monolithic phase shifter (1983)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-06-28
    Beschreibung: The design and performance of a GaAs monolithic 180-degree one-bit switched line phase shifter test circuit for Ka-band operation is presented. A self-aligned gate (SAG) fabrication technique is also described that reduces resistive parasitics in the switching FET's. Over the 27.5-30 GHz band, typical measured differential insertion phase is within 10-20 deg of the ideal time delay characteristic. Over the same band, the insertion loss for the SAG phase shifter is about 2.5-3 dB per bit. The SAG fabrication technique holds promise in reducing phase shifter insertion loss to about 1.5 dB/bit for 30-GHz operation.
    Schlagwort(e): ELECTRONICS AND ELECTRICAL ENGINEERING
    Materialart: IEEE Transactions on Microwave Theory and Techniques (ISSN 0018-9480); MTT-31; 1077-108
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 5
    facet.materialart.
    Unbekannt
    Two stage dual gate MESFET monolithic gain control amplifier for Ka-band (1987)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-27
    Beschreibung: A monolithic two stage gain control amplifier has been developed using submicron gate length dual gate MESFETs fabricated on ion implanted material. The amplifier has a gain of 12 dB at 30 GHz with a gain control range of over 30 dB. This ion implanted monolithic IC is readily integrable with other phased array receiver functions such as low noise amplifiers and phase shifters.
    Schlagwort(e): ELECTRONICS AND ELECTRICAL ENGINEERING
    Materialart: IEEE, 1987 Microwave and Millimeter-Wave Monolithic Circuits Symposium; June 8 , 9, 1987; Las Vegas, NV; United States
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
  • 6
    facet.materialart.
    Unbekannt
    Ka-band monolithic gain control amplifier (1986)
    In:  Other Sources
    Details
    Publikationsdatum: 2019-07-12
    Beschreibung: A monolithic gain control amplifier for Ka-band has been developed based on 0.25 micron-gate-length dual-gate FETs fabricated on ion-implanted material. A single-stage monolithic amplifier gives a gain of 6 dB at 31 GHz including fixture losses with a gain control range of over 20 dB. The device and IC design and fabrication are described.
    Schlagwort(e): ELECTRONICS AND ELECTRICAL ENGINEERING
    Materialart: Electronics Letters (ISSN 0013-5194); 22; 503
    Format: text
    Standort Signatur Erwartet Verfügbarkeit
    BibTip Andere fanden auch interessant ...
    NASA TECHNICAL REPORTS
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