Different Organic Peroxides that Cure Low‐ k 1, 2‐PB / SBS / EPDM Composites for High‐Frequency Substrate

2020 ◽  
Vol 26 (4) ◽  
pp. 524-535
Author(s):  
Bo Wu ◽  
Xin Mao ◽  
Chunyan Wang ◽  
Ting Deng ◽  
Rong Li ◽  
...  
Keyword(s):  
High Frequency ◽  
Organic Peroxides ◽  
Low K

Low k Materials for High Frequency High Integration Modules

2009 ◽  
Vol 46 (4) ◽  
pp. 413-418
Author(s):  
Yoon-Soo Na ◽  
Tae-Young Lim ◽  
Jin-Ho Kim ◽  
Hyo-Soon Shin ◽  
Jong-Hee Hwang ◽  
...  
Keyword(s):  
High Frequency ◽  
Low K

A Fluorinated Thermocrosslinkable Organosiloxane: A New Low ‐k Material at High Frequency with Low Water Uptake

2020 ◽  
pp. 2000600
Author(s):  
Fengping Liu ◽  
Xingrong Chen ◽  
Jiaren Hou ◽  
Jing Sun ◽  
Qiang Fang
Keyword(s):  
Water Uptake ◽  
High Frequency ◽  
Low K

An effective strategy for the preparation of intrinsic low-k and ultralow-loss dielectric polysiloxanes at high frequency by introducing trifluoromethyl groups into the polymers

2020 ◽  
Vol 11 (38) ◽  
pp. 6163-6170
Author(s):  
Fengping Liu ◽  
Xingrong Chen ◽  
Linxuan Fang ◽  
Jing Sun ◽  
Qiang Fang
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Dielectric Loss ◽  
High Frequency ◽  
Low Dielectric Constant ◽  
Effective Strategy ◽  
Low Dielectric ◽  
5 Ghz ◽  
Low K ◽  
Trifluoromethyl Groups

Two new CF3-containing polysiloxanes with low dielectric constant (Dk) and dielectric loss (Df ) at a high frequency of 5 GHz were reported. The sample with two −CF3 groups exhibits better dielectric properties with Dk of 2.53 and ultralow Df of 1.66 × 10−3.

scholarly journals The Hot QTL Locations for Potassium, Calcium, and Magnesium Nutrition and Agronomic Traits at Seedling and Maturity Stages of Wheat under Different Potassium Treatments

Genes ◽  
2019 ◽  
Vol 10 (8) ◽  
pp. 607 ◽  
Author(s):  
Shen ◽  
Yuan ◽  
Zhang ◽  
Guo ◽  
Zhao ◽  
...  
Keyword(s):  
High Frequency ◽  
Agronomic Traits ◽  
Recombinant Inbred Lines ◽  
Field Trials ◽  
Inbred Lines ◽  
Mineral Nutrients ◽  
Seedling Traits ◽  
Maturity Stages ◽  
Use Efficiency ◽  
Low K

Potassium (K) is one of the most important mineral nutrients for wheat. In this study, the effects of low K (LK) treatments and the quantitative trait loci (QTLs) for K, calcium (Ca), and magnesium (Mg) use efficiency traits, both at the seedling and maturity stages of wheat, were investigated. The set of “Tainong 18 × Linmai 6” recombinant inbred lines (RILs) were used to identify the QTLs under different K treatments using hydroponic culture and field trials. The majority of K concentrations and content-related traits at seedling and maturity stages decreased with reduced K supply, but the K use efficiency-related traits increased. In contrast, with reduced K supply, the contents of Ca and Mg increased, while the Ca and Mg use efficiency decreased. A total of 217 QTLs for seedling traits and 89 QTLs for adult traits were detected. Four relatively high-frequency QTLs (RHF-QTLs) and 18 QTL clusters (colocation of QTLs for more than two traits) were detected. Eight clusters were detected for K-, Ca-, and Mg-related traits simultaneously. This means that these traits might be controlled by the same QTL. In addition, we highlight that 4B might be an important chromosome regulating the nutrition of K, Ca, and Mg in wheat. The 4B chromosome and four hot QTL clusters, which located 45 QTLs, might be important potential targets for further investigation.

Etching of Organic Low k Dielectric, their Gas Phase and Subsurface Reactions in Ultra High Frequency Plasma

2002 ◽  
Author(s):  
Hisao Nagai ◽  
Mineo Hiramatsu ◽  
Masaru Hori ◽  
Toshio Goto
Keyword(s):  
Gas Phase ◽  
High Frequency ◽  
Ultra High Frequency ◽  
High Frequency Plasma ◽  
Frequency Plasma ◽  
Low K

Electron Probe Analysis of Vertebrate Smooth Muscle: Distribution of Ca and Ci

1976 ◽  
Vol 34 ◽  
pp. 334-335 ◽  
Author(s):  
Avril V. Somlyo ◽  
H. Shuman ◽  
A.P. Somlyo
Keyword(s):  
Smooth Muscle ◽  
Electron Probe ◽  
Preliminary Report ◽  
Cell Damage ◽  
Electron Probe Analysis ◽  
Perinuclear Space ◽  
Probe Analysis ◽  
High K ◽  
Low K ◽  
Initial Results

This is a preliminary report of electron probe analysis of rabbit portal-anterior mesenteric vein (PAMV) smooth muscle cryosectioned without fixation or cryoprotection. The instrumentation and method of electron probe quantitation used (1) and our initial results with cardiac (2) and skeletal (3) muscle have been presented elsewhere.In preparations depolarized with high K (K2SO4) solution, significant calcium peaks were detected over the sarcoplasmic reticulum (Fig 1 and 2) and the continuous perinuclear space. In some of the fibers there were also significant (up to 200 mM/kg dry wt) calcium peaks over the mitochondria. However, in smooth muscle that was not depolarized, high mitochondrial Ca was found in fibers that also contained elevated Na and low K (Fig 3). Therefore, the possibility that these Ca-loaded mitochondria are indicative of cell damage remains to be ruled out.

The Microstructure of Steatite (Protoenstatite)

1985 ◽  
Vol 43 ◽  
pp. 236-237
Author(s):  
W. E. Lee ◽  
A. H. Heuer
Keyword(s):  
High Frequency ◽  
Glass Ceramics ◽  
Magnesium Silicate ◽  
Beam Current ◽  
Glassy Matrix ◽  
Angle Of Incidence ◽  
X Ray ◽  
Mechanical And Electrical Properties ◽  
Argon Ions ◽  
High Temperature Polymorph

IntroductionTraditional steatite ceramics, made by firing (vitrifying) hydrous magnesium silicate, have long been used as insulators for high frequency applications due to their excellent mechanical and electrical properties. Early x-ray and optical analysis of steatites showed that they were composed largely of protoenstatite (MgSiO3) in a glassy matrix. Recent studies of enstatite-containing glass ceramics have revived interest in the polymorphism of enstatite. Three polymorphs exist, two with orthorhombic and one with monoclinic symmetry (ortho, proto and clino enstatite, respectively). Steatite ceramics are of particular interest a they contain the normally unstable high-temperature polymorph, protoenstatite.Experimental3mm diameter discs cut from steatite rods (∼10” long and 0.5” dia.) were ground, polished, dimpled, and ion-thinned to electron transparency using 6KV Argon ions at a beam current of 1 x 10-3 A and a 12° angle of incidence. The discs were coated with carbon prior to TEM examination to minimize charging effects.

Simulations of high-resolution images of amorphous silicon films

1986 ◽  
Vol 44 ◽  
pp. 544-545
Author(s):  
G. Y. Fan ◽  
J. M. Cowley
Keyword(s):  
Electron Microscope ◽  
High Frequency ◽  
Fourier Transformation ◽  
Amorphous Materials ◽  
Low Frequency ◽  
Chromatic Aberration ◽  
Structure Information ◽  
Frequency Components ◽  
High Resolution Images ◽  
Spatial Frequency Spectrum

It is well known that the structure information on the specimen is not always faithfully transferred through the electron microscope. Firstly, the spatial frequency spectrum is modulated by the transfer function (TF) at the focal plane. Secondly, the spectrum suffers high frequency cut-off by the aperture (or effectively damping terms such as chromatic aberration). While these do not have essential effect on imaging crystal periodicity as long as the low order Bragg spots are inside the aperture, although the contrast may be reversed, they may change the appearance of images of amorphous materials completely. Because the spectrum of amorphous materials is continuous, modulation of it emphasizes some components while weakening others. Especially the cut-off of high frequency components, which contribute to amorphous image just as strongly as low frequency components can have a fundamental effect. This can be illustrated through computer simulation. Imaging of a whitenoise object with an electron microscope without TF limitation gives Fig. 1a, which is obtained by Fourier transformation of a constant amplitude combined with random phases generated by computer.

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