Characterization of Silicone Rubber Reinforced with Conductive Powder

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.378-379.535 ◽

2011 ◽

Vol 378-379 ◽

pp. 535-538

Author(s):

Elena Valentina Stoian

Keyword(s):

Electromagnetic Field ◽

Human Factor ◽

Shielding Effectiveness ◽

Micro Particles ◽

Conductive Fillers ◽

Transmission Measurements ◽

Common Problems ◽

Silicone Rubbers ◽

Conductive Plastics

Conductive plastics are attracting more and more interest in electronics due to their light weight and inability to rust, which are common problems associated with metals. In this work silicone rubbers reinforced with conductive fillers have been fabricated for use in various applications in electronics, telecommunications, and electronics enclosures, or to protect human factor, namely protective clothing. This paper presents the results of experimental determinations concerning electromagnetic field attenuation in materials containing micro-particles of nanocarbon in their structure. To know the effect of shielding effectiveness of electromagnetic field electromagnetic absorbents were performed by transmission measurements of attenuation in the frequency range 1-18 GHz. The goal of present paper consits in the realization a composit material with polymeric matrix. The materials were characterized by transmision diminishing carried out, relative permittivity, compression test and electrical conductivity.

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Shields Characterization of Composite Materials Based on Pyrites Ashes

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.341-342.210 ◽

2011 ◽

Vol 341-342 ◽

pp. 210-214

Author(s):

Elena Valentina Stoian ◽

Cristiana Zizi Rizescu ◽

Jana Pintea ◽

Vasile Bratu ◽

Dan Nicolae Ungureanu ◽

...

Keyword(s):

Electromagnetic Field ◽

Condensation Reaction ◽

Polymeric Matrix ◽

Shielding Effectiveness ◽

X Ray Diffraction ◽

Micro Particles ◽

Filling Agent ◽

Transmission Measurements ◽

Poly Condensation

This paper presents the results of experimental determinations concerning electromagnetic field attenuation in materials containing micro-particles of ashes pyrite in their structure. To know the effect of shielding effectiveness of electromagnetic field electromagnetic absorbents were performed by transmission measurements of attenuation in the frequency range 1-18 GHz. The goal of present paper consits in the realization a composit material with polymeric matrix. The synthetic polymeric matrix used at the obtaining composite is represented by a bicomponent silicone elastomer that strengthens itself at the room temperature by means of a poly condensation reaction. The materials obtained in laboratory contain plated nettling like reinforcement material and ashes pyrite as filling agent. The materials were characterized by X-ray diffraction, transmision diminishing carried out and relative permittivity.

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Characterization of Monoclonal Anti-human Factor VII Antibody (B101/B1) that Recognized Three-dimensional Structures near Arg at Position 79 in the First EGF-like Domain

Thrombosis and Haemostasis ◽

10.1055/s-0037-1614229 ◽

1998 ◽

Vol 79 (01) ◽

pp. 104-109 ◽

Cited By ~ 6

Author(s):

Osamu Takamiya

Keyword(s):

Monoclonal Antibodies ◽

Tissue Factor ◽

Human Factor ◽

Solid Phase ◽

Three Dimensional ◽

Coagulation Factors ◽

Factor Vii ◽

Dimensional Structure ◽

Epidermal Growth

SummaryMurine monoclonal antibodies (designated hVII-B101/B1, hVIIDC2/D4 and hVII-DC6/3D8) directed against human factor VII (FVII) were prepared and characterized, with more extensive characterization of hVII-B101/B1 that did not bind reduced FVIIa. The immunoglobulin of the three monoclonal antibodies consisted of IgG1. These antibodies did not inhibit procoagulant activities of other vitamin K-dependent coagulation factors except FVII and did not cross-react with proteins in the immunoblotting test. hVII-DC2/D4 recognized the light chain after reduction of FVIIa with 2-mercaptoethanol, and hVIIDC6/3D8 the heavy chain. hVII-B101/B1 bound FVII without Ca2+, and possessed stronger affinity for FVII in the presence of Ca2+. The Kd for hVII-B101/B1 to FVII was 1.75 x 10–10 M in the presence of 5 mM CaCl2. The antibody inhibited the binding of FVII to tissue factor in the presence of Ca2+. hVII-B101/B1 also inhibited the activation of FX by the complex of FVIIa and tissue factor in the presence of Ca2+. Furthermore, immunoblotting revealed that hVII-B101/B1 reacted with non-reduced γ-carboxyglutaminic acid (Gla)-domainless-FVII and/or FVIIa. hVII-B101/B1 showed a similar pattern to that of non-reduced proteolytic fragments of FVII by trypsin with hVII-DC2/D4 on immunoblotting test. hVII-B101/B1 reacted differently with the FVII from the dysfunctional FVII variant, FVII Shinjo, which has a substitution of Gln for Arg at residue 79 in the first epidermal growth factor (1st EGF)-like domain (Takamiya O, et al. Haemosta 25, 89-97,1995) compared with normal FVII, when used as a solid phase-antibody for ELISA by the sandwich method. hVII-B101/B1 did not react with a series of short peptide sequences near position 79 in the first EGF-like domain on the solid-phase support for epitope scanning. These results suggested that the specific epitope of the antibody, hVII-B101/B1, was located in the three-dimensional structure near position 79 in the first EGF-like domain of human FVII.

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Expression and characterization of human factor IX. Factor IXthr-397 and factor IXval-397

Journal of Biological Chemistry ◽

10.1016/s0021-9258(18)98605-9 ◽

1991 ◽

Vol 266 (23) ◽

pp. 15213-15220

Author(s):

N. Hamaguchi ◽

P.S. Charifson ◽

L.G. Pedersen ◽

G.D. Brayer ◽

K.J. Smith ◽

...

Keyword(s):

Human Factor ◽

Factor Ix ◽

Human Factor Ix

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Terahertz characterization of two-dimensional low-conductive layers enabled by metal gratings

Scientific Reports ◽

10.1038/s41598-021-82560-2 ◽

2021 ◽

Vol 11 (1) ◽

Author(s):

Prashanth Gopalan ◽

Yunshan Wang ◽

Berardi Sensale-Rodriguez

Keyword(s):

Optical Transmission ◽

Terahertz Spectroscopy ◽

Design Guidelines ◽

Two Dimensional ◽

Highly Sensitive ◽

Transmission Measurements ◽

Metal Gratings ◽

Low Sensitivity ◽

Non Destructive

AbstractWhile terahertz spectroscopy can provide valuable information regarding the charge transport properties in semiconductors, its application for the characterization of low-conductive two-dimensional layers, i.e., σs < < 1 mS, remains elusive. This is primarily due to the low sensitivity of direct transmission measurements to such small sheet conductivity levels. In this work, we discuss harnessing the extraordinary optical transmission through gratings consisting of metallic stripes to characterize such low-conductive two-dimensional layers. We analyze the geometric tradeoffs in these structures and provide physical insights, ultimately leading to general design guidelines for experiments enabling non-contact, non-destructive, highly sensitive characterization of such layers.

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