XPXM/C: a taxonomy of processor coupling techniques

Abstract A class of multi-band planar diplexer with sub-sets of frequency-contiguous transmission bands is reported. Such a radio frequency (RF) device is suitable for lightweight high-frequency receivers aimed at multi-band/multi-purpose mobile satellite communications systems. It consists of two channelizing filters, each of them being made up of the in-series cascade connection of replicas of a constituent multi-passband/multi-embedded-stopband filtering stage. This building filtering stage defines a multi-passband transfer function for each channel, in which each main transmission band is split into various sub-passbands by the multi-stopband part. In this manner, each split passband gives rise to several sub-passbands that are imbricated with their counterpart ones of the other channel. The theoretical RF operational principles of the proposed multi-band diplexer approach with sub-sets of imbricated passbands are detailed by means of a coupling–routing–diagram formalism. Besides, the generation of additional transmission zeros in each channelizing filter for higher-selectivity realizations by exploiting cross-coupling techniques into it is also detailed. Furthermore, for experimental demonstration purposes, a microstrip proof-of-concept prototype of second-order octo-band diplexer in the frequency range of 1.5–2.5 GHz that consists of two quad-band channelizing filters with pairs of imbricated passbands is developed and characterized.

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INFLUENCE OF CHEMICAL STRUCTURE ON THE RATE OF AZO COUPLING AND ITS SIGNIFICANCE IN HISTOCHEMICAL METHODOLOGY

Journal of Histochemistry & Cytochemistry ◽

10.1177/7.1.50 ◽

1959 ◽

Vol 7 (1) ◽

pp. 50-65 ◽

Cited By ~ 28

Author(s):

MARVIN M. NACHLAS ◽

THEODORE P. GOLDSTEIN ◽

DAVID H. ROSENBLATT ◽

MARVIN KIRSCH ◽

ARNOLD M. SELIGMAN

Keyword(s):

Aromatic Amines ◽

Diazonium Salt ◽

Tissue Sections ◽

Coupling Techniques ◽

Diazonium Ions ◽

Coupling Rate ◽

Diazonium Ion ◽

Hydroxy Compounds ◽

Positive Groups ◽

Electro Negativity

Reliability of enzymatic localization in tissue sections by the simultaneous coupling techniques is dependent to a great extent upon the speed of coupling. Therefore, the influence on coupling rate of the structure of the diazonium ion and of the coupling component was studied. Electro-negative groups in the diazonium ion increase the rate of coupling, while the same groups in the coupling component decrease the rate. Electro-positive groups in the coupling component accelerate coupling, but slow it when present in the diazonium ion. The relation of coupling rate and electro-negativity of the substituents in the diazonium ion follows Hammett's equation (8). Although the relations is linear on coupling with aromatic hydroxy compounds, it is not so with aromatic amines. The most active diazonium ions showed no increase in coupling rate with aromatic amines. This suggests that for those enzymes hydrolyzing an ester link, increase of coupling rate might be accomplished by modifying the structure of either the coupling component used in the substrate or the diazonium salt. However, for enzymes splitting amide linkages, the only possibility of improving the localization is by modifying the structure of the coupling component.

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Irradiation–coupling techniques using JMTR and another facility

Journal of Nuclear Materials ◽

10.1016/s0022-3115(00)00347-0 ◽

2000 ◽

Vol 283-287 ◽

pp. 997-1000

Author(s):

Y Matsui ◽

Y Itahashi ◽

M Shimizu ◽

H Tsuji

Keyword(s):

Coupling Techniques

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Chemotaxonomic Investigation of Wild Growing Amaryllidaceae using Multidimensional Coupling Techniques: Development of a Screening Method

Planta Medica ◽

10.1055/s-2006-961723 ◽

1992 ◽

Vol 58 (S 1) ◽

pp. 699-700

Author(s):

O. Queckenberg ◽

A. Frahm ◽

D. Müller-Doblies ◽

U. Müller-Doblies

Keyword(s):

Screening Method ◽

Coupling Techniques

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Model coupling techniques for free-surface flow problems: Part II

Nonlinear Analysis ◽

10.1016/j.na.2005.03.085 ◽

2005 ◽

Vol 63 (5-7) ◽

pp. e1897-e1908 ◽

Cited By ~ 3

Author(s):

E. Miglio ◽

S. Perotto ◽

F. Saleri

Keyword(s):

Free Surface ◽

Free Surface Flow ◽

Surface Flow ◽

Model Coupling ◽

Flow Problems ◽

Coupling Techniques

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Verification of multiphysics coupling techniques for modeling of molten salt reactors

Annals of Nuclear Energy ◽

10.1016/j.anucene.2021.108578 ◽

2021 ◽

Vol 164 ◽

pp. 108578

Author(s):

J. Groth-Jensen ◽

A. Nalbandyan ◽

E.B. Klinkby ◽

B. Lauritzen ◽

P. Sabbagh ◽

...

Keyword(s):

Molten Salt ◽

Coupling Techniques ◽

Multiphysics Coupling

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Tailoring Plate Thickness of a Helmholtz Resonator for Improved Sound Attenuation

Volume 8: 28th Conference on Mechanical Vibration and Noise ◽

10.1115/detc2016-59302 ◽

2016 ◽

Author(s):

Mohammad Kurdi ◽

Shahin Nudehi ◽

Gregory Scott Duncan

Keyword(s):

Transmission Loss ◽

Plate Thickness ◽

Helmholtz Resonator ◽

Element Model ◽

Flexible Plate ◽

End Plate ◽

Receptance Coupling ◽

Coupling Techniques ◽

Gradient Based ◽

Optimization Search

A Helmholtz resonator with flexible plate attenuates noise in exhaust ducts, and the transmission loss function quantifies the amount of filtered noise at a desired frequency. In this work the transmission loss is maximized (optimized) by allowing the resonator end plate thickness to vary for two cases: 1) a non-optimized baseline resonator, and 2) a resonator with a uniform flexible endplate that was previously optimized for transmission loss and resonator size. To accomplish this, receptance coupling techniques were used to couple a finite element model of a varying thickness resonator end plate to a mass-spring-damper model of the vibrating air mass in the resonator. Sequential quadratic programming was employed to complete a gradient based optimization search. By allowing the end plate thickness to vary, the transmission loss of the non-optimized baseline resonator was improved significantly, 28 percent. However, the transmission loss of the previously optimized resonator for transmission loss and resonator size showed minimal improvement.

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An Alternative Coupling Procedure for Preparing Activated Sepharose for Affinity Chromatography of Penicillinase

Australian Journal of Biological Sciences ◽

10.1071/bi9760305 ◽

1976 ◽

Vol 29 (4) ◽

pp. 305 ◽

Cited By ~ 6

Author(s):

RG Coombe ◽

AM George

Keyword(s):

Affinity Chromatography ◽

Room Temperature ◽

Cyanogen Bromide ◽

Dry Weight ◽

Enzymic Activity ◽

Covalent Attachment ◽

Affinity Column ◽

Coupling Procedure ◽

Coupling Techniques ◽

Cyanogen Bromide Activation

Most applications of affinity chromatography employ the cyanogen bromide activation scheme first devised by Axtm et al. (1967). Porath and Sundberg (1972) reported an alternative procedure in which phloroglucinol and divinylsulphone are used in activating reactions. The advantages of this scheme and parameters relevant to the activating reactions are reported here. Conditions for the attachment of various ligand molecules to sepharose using a divinylsulphone activation method are defined, and a comparison with cyanogen bromide activating and coupling techniques is drawn. a-Chymotrypsin is immobilized by covalent attachment to activated sepharose. The optimum coupling pH is 8� 0-8� 6 and the reaction is virtually complete after 20 h at room temperature. Conjugates containing as much as 2 g of enzyme per gram dry weight of polymer were obtained. The immobilized enzyme retained 41 % of the free enzymic activity. An affinity column of divinylsulphone-activated methicillin-sepharose was used to demonstrate the reversible adsorption of penicillinase.

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