Results 221 to 230 of about 1,498,192 (263)
Some of the next articles are maybe not open access.
High-frequency vibration isolation
Journal of Sound and Vibration, 1966Abstract Concepts applicable to high-frequency vibration isolation are reviewed with the primary intent of providing insight into the important phenomena. Generalized expressions for transmissibility and isolation effectiveness are presented, which are applicable to isolation of one point of a linear system and which take into account isolator mass ...
E.E. Ungar, C.W. Dietrich
openaire +1 more source
High isolation MIMO antenna for high speed communication
2014 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium), 2014Ubiquitous use of handheld devices has put a tremendous strain on the available bandwidth of communication. The scarcity of spectrum has rapidly shifted the modern systems towards multiple input and multiple output systems (MIMO). The development of MIMO antennas has attracted significant attention in literature.
Santosh Seran, Tutku Karacolak
openaire +1 more source
High Isolated MIMO Antenna for WLAN Applications
Journal of Circuits, Systems and Computers, 2021This paper presents a compact multiple-inputs multiple-outputs (MIMO) antenna for wireless local area network (WLAN) applications. The proposed four-port MIMO antenna has been incorporated with its four identical elements having dimensions of 10[Formula: see text]mm [Formula: see text] 12[Formula: see text]mm each.
Param Dev +3 more
openaire +1 more source
Isolation and properties of high molecular weight heparin
Thrombosis Research, 1981Abstract A heparin fraction comprising the highest molecular weight components of beef-lung heparin preparations was isolated by chromatography on Biogel P-100. This fraction, all of which is highly active in accelerating the inhibition of thrombin by antithrombin III, includes material with considerably greater activities than previously reported ...
S, Radoff, I, Danishefsky
openaire +2 more sources
High Pressure Homogenization for Inclusion Body Isolation
2023High pressure homogenization (HPH) is a commonly used method for cell lysis of Escherichia coli in order to release intracellularly produced recombinant proteins. For misfolded proteins in E. coli, focus is often put on the development of a suitable solubilization and refolding protocol.
Julian, Ebner +2 more
openaire +2 more sources
Isolation of high quality RNA from Streptomyces
Journal of Microbiological Methods, 2004Several molecular techniques require high quality RNA, completely free of DNA. Standard methods to isolate total RNA from Streptomyces spp. are based on the application of a 'Modified Kirby Mix' [Practical Streptomyces Genetics. The John Innes Foundation, Norwich, pp. 613].
W, Van Dessel +4 more
openaire +2 more sources
Testing and Isolation of High-Purity Restriction Endonucleases
Applied Biochemistry and Microbiology, 2002A new method of testing restriction nucleases is proposed. This method is based on high-temperature treatment of crude cell extracts. Disrupted cells were heated at 50-60 degrees C, centrifuged, and assayed for restrictases. This method provides the opportunity for screening new enzymes in microbial strains enriched with nonspecific restrictases.
L I, Puchkova +5 more
openaire +2 more sources
Autolysis of high-GC isolates of Pseudomonas putrefaciens
Antonie van Leeuwenhoek, 1976High-GC isolates of P. putrefaciens undergo extensive autolysis after growth, resulting in a marked decrease in turbidity and the release of high-molecular-weight DNA which imparts a high viscosity to culture broths. The native DNA released is resistant to attack by the exocellular DNase activity of the culture broths. Autolysis is inhibited by a pH of
R E, Levin, C, Van Sickle
openaire +2 more sources
High-power resonance isolators
Proceedings of the IEE Part B: Electronic and Communication Engineering, 1962A method is given by which resonance-absorption isolators may be designed to handle any required mean power level and load mismatch without deterioration in performance. The method is derived from a study of the properties of small discs of ferrite in X-band waveguide at high mean powers and of the thermal conditions in the ferrite.
openaire +1 more source
High-performance separations in isolation and characterization of allergens
Journal of Chromatography B: Biomedical Sciences and Applications, 1997The present state of the use of separation techniques in the identification and characterization of allergens and in the monitoring of the quality of allergenic preparations is critically surveyed. After a brief summary of the range of problems encountered in obtaining and in the application of allergenic preparations and of the principal physico ...
V, Pacáková, K, Stulík, M, Tichá
openaire +2 more sources