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Silicon Compounds (3):
Recent article
Silicon Compounds
Abstract
Two novel, bionanocomposite scaffolds were evaluated in a rodent model over the course of three months to determine whether these scaffolds possessed adequate biocompatibility characteristics to warrant further evaluation as possible tissue reconstruction scaffolds. These bionanocomp...
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PMID: 21210516
PDF is available here.
PDF is available here.
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Abstract
This work deals with the fabrication and characterization of nanostructured forsterite bulk. This material may have better biocompatibility and mechanical properties than coarse grain forsterite for the development of bone tissue engineering materials. Nanostructured forsterite bulks...
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PMID: 20696418
PDF is available here.
PDF is available here.
Optics Express (18)20 2010
Abstract
We demonstrate label-free optical biosensing using a horizontal air-slotted silicon-rich silicon nitride (SiNx) microdisk resonator. Due to the strong confinement of light in the air-slot, a large resonance shift of 6.2 nm is observed upon reaction of the biotin-functionalized disk with a streptavid...
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PMID: 20940958
PDF is available here.
PDF is available here.
Abstract
The purpose of this study was to evaluate the influence of contamination and subsequent cleaning on the bond strength and durability of an adhesive resin to nano-structured alumina-coated zirconia ceramic. Zirconia ceramic disks were coated with nano-structured alumina, utilizing the hydrolysis of a...
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PMID: 20662914
PDF is available here.
PDF is available here.
Journal of Endodontics (36)8 2010
Abstract
There was no significant difference between EDTA and maleic acid in the reduction of microhardness. The increase in roughness was significantly greater with maleic acid when compared with EDTA. CONCLUSION: Maleic acid reduced the microhardness of root dentin similar to EDTA but increased the surface...
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PMID: 20647102
PDF is available here.
PDF is available here.
Journal of Endodontics (36)8 2010
Abstract
This study indicated that storage temperature might influence surface hardness and microstructure of WMTA.
Copyright 2010 American Association of Endodontists. Published by Elsevier Inc. All rights reserved....
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PMID: 20647108
PDF is available here.
PDF is available here.
Abstract
We observe exceptionally long-lasting current blockades with a fine structure of distinct current levels, suggesting an attractive interaction between the DNA and the PEGylated metallic pore walls....
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PMID: 20564484
PDF is available here.
PDF is available here.
Abstract
Chitosan-g-poly(acrylic acid)/attapulgite composite with 30 wt% attapulgite content was used to remove Cd(II) from aqueous solutions. The parameters influencing the adsorption were investigated. When Cd(CH3COO)2 was used as the solute of the solution, the equilibrium adsorption capacity was evidentl...
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PMID: 20586236
PDF is available here.
PDF is available here.
Nanotechnology (21)21 2010
Abstract
The effect of average particle sizes on basic macroscopic properties and heat transfer performance of alpha-SiC/water nanofluids was investigated. The average particle sizes, calculated from the specific surface area of nanoparticles, were varied from 16 to 90 nm. Nanofluids with larger particles of...
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PMID: 20431197
PDF is available here.
PDF is available here.
Optics Express (18)11 2010
Abstract
A simple technique to incorporate microlenes with small photodiode arrays is demonstrated and analyzed. Using this method, the fill factor was increased from 2.6% to 22.4% for a two by two array. Simulation results are also shown. The photocurrent with microlens was approximately 8.6 times larger th...
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PMID: 20589031
PDF is available here.
PDF is available here.
Optics Express (18)11 2010
Abstract
We design and fabricate pedestal-type, 15 microm diameter silicon nitride microdisk resonators on Si chip with horizontal air-slot using selective wet etching between Si, SiO2, and SiNx. As the slot structure is determined by deposition process, air slots that are as thin as 40 nm and as deep as 5 m...
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PMID: 20588980
PDF is available here.
PDF is available here.
Optics Letters (35)10 2010
Abstract
The optimization of H1 photonic crystal cavities for applications in the visible spectral range is reported, with the goal to obtain a versatile photonic platform to explore strongly and weakly coupled systems. The resonators have been realized in silicon nitride and weakly coupled to both organic (...
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PMID: 20479791
PDF is available here.
PDF is available here.
Chemical Communications (46)18 2010
Abstract
A novel tetraamino silicon(iv) phthalocyanine has been prepared, of which the fluorescence emission and reactive oxygen species generation efficiency are greatly enhanced at lower pH in the range of ca. 5-7, making it a promising pH-controlled and tumour-selective fluorescence probe and photosensiti...
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PMID: 20424769
PDF is available here.
PDF is available here.
Abstract
We report a simple one-step UV lithography method to activate inert hydrocarbon monolayers for spontaneous formation of water and covalently immobilized protein micropatterns on the surface. Two types of hydrocarbon monolayers including octadecyltrichlorosilane (OTS) on silicon oxide and 1-hexadecen...
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PMID: 20060543
PDF is available here.
PDF is available here.
Abstract
Natural sponge was used as a template to produce carbon/epoxy resin and (carbon+silicon carbide)/epoxy resin composites with interpenetrating network structures. Carbon with a network structure was first obtained by pyrolysis of the natural sponge. The composites were then obtained by injecting epox...
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PMID: 20185858
PDF is available here.
PDF is available here.
Dental Materials Journal (29)2 2010
Abstract
Nanofiller-containing resin composites have gained appreciable market share in dentistry due to their claims of high mechanical strength and low polymerization contraction. In this study, the polishability of one nanofill (Filtek Supreme XT/FIL) and three nanohybrid materials (Grandio/GRA, Tetric Ev...
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PMID: 20379033
PDF is available here.
PDF is available here.
Dental Materials Journal (29)2 2010
Abstract
The bond strength between veneering ceramic and zirconia framework is the weakest link in the layered structure. To investigate the shear bond strength (SBS) of veneering ceramics to zirconia, four types of zirconia ceramics (Zirkonzahn, Cercon, Lava, DC-Zirkon) were selected. For each zirconia syst...
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PMID: 20379023
PDF is available here.
PDF is available here.
Dental Materials Journal (29)2 2010
Abstract
This study evaluated the effects of metal primers on the bonding of adhesive resin to four pure metals (Au, Pd, Ag, Cu) and two noble alloys for porcelain fusing (high-gold and high-palladium content alloys). Bonding surface was polished with 600-grit silicon carbide paper and primed with one of the...
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PMID: 20379028
PDF is available here.
PDF is available here.
Abstract
Silica coating and tribochemical treatment significantly increased the bond strength of the MA, UN, BR, BI, SE and CL to zirconia compared to #600 polishing. For both #600 polished and silica coating treatments, MDP-containing self-adhesive resin cement CL had the highest bond strengths to zirconia....
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PMID: 20690416
PDF is available here.
PDF is available here.
Optics Express (18)2 2010
Abstract
Luminescent SiN-based multilayers were prepared in a plasma enhanced chemical vapor deposition system followed by subsequently laser crystallization of ultrathin amorphous Si-rich SiN sublayers. The cross-sectional TEM analysis reveals that grain size of Si nanocrystals embedded in the Si-rich SiN s...
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PMID: 20173937
PDF is available here.
PDF is available here.
Abstract
The purpose of this study was to evaluate the effect of different filler sizes and shapes on the surface roughness of experimental resin-composite series.
Thirty-three disc-shaped specimens of the series (Spherical-RZD 102, 105, 106, 107, 114 and Irregular-RZD 103, 108, 109, 110, 111, 112) were prep...
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PMID: 20379683
PDF is available here.
PDF is available here.
Abstract
An auricular prosthesis is an artificial substitute for the auricle; the term epithesis is used synonymously. A myriad of materials have been used in the long history of anaplastology. However, the breakthrough came with the introduction of modern silicones and their colorings. While there are still...
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PMID: 20442562
PDF is available here.
PDF is available here.
Operative Dentistry (35)4 2010
Abstract
This in vitro study evaluated the performance of three ceramic and two commonly used polishing methods on two CAD/CAM ceramics. Surface roughness and quality were compared. A glazed group (GLGR) of each ceramic material served as reference. One-hundred and twenty specimens of VITABLOCS Mark II (VITA...
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PMID: 20672733
PDF is available here.
PDF is available here.
Abstract
We observed an increased risk of cancer (especially in the lung but also at other sites) among both short- and long-term workers. Dust exposure in the silicon carbide industry may have contributed to the increased risk among long-term workers, whereas the increased risk among short-term workers may...
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PMID: 19953212
PDF is available here.
PDF is available here.
Operative Dentistry (35)1 2010
Abstract
This study examined the relationship between the adhesive application time and enamel bond strength of several single-step self-etch adhesive systems. The adhesives used were: Bond Force (BF, Tokuyama Dental Corporation, Tokyo, Japan), Clearfil tri-S Bond (CT, Kuraray Medical Inc, Tokyo, Japan), iBo...
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PMID: 20166414
PDF is available here.
PDF is available here.
Abstract
The effects of some factors on the chemotaxis of Azotobacter vinelandii IMV V-7076 and Bacillus subtilis IMV V-7023 and on their adhesion to cucumber roots have been studied. Glucose chemotaxis and adhesion to roots reach peak values in pH ranges characteristic of each strain. These ranges are 7.0-8...
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PMID: 20198918
PDF is available here.
PDF is available here.
Abstract
The review is devoted for the occurance, meaning of silicon and their compounds, especially silicon acids and silicones. Silicon participates in biosynthesis of collagen, the basic component of connective tissue. It strengthens and makes the walls of blood vessels more flexible, diminishes capillari...
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PMID: 19999810
PDF is available here.
PDF is available here.
Cytotherapy (11)6 2009
Abstract
Abstract
The mechanistic foundations of the Lewis base catalyzed aldol addition reactions have been investigated. From a combination of low-temperature spectroscopic studies ((29)Si and (31)P NMR) and kinetic analyses using a rapid-injection NMR apparatus (RINMR), a correlation of the ground states and trans...
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PMID: 19642696
PDF is available here.
PDF is available here.
Nano Letters (9)9 2009
Abstract
We report on a method to produce free-standing graphene sheets from epitaxial graphene on silicon carbide (SiC) substrate. Doubly clamped nanomechanical resonators with lengths up to 20 microm were patterned using this technique and their resonant motion was actuated and detected optically. Resonanc...
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PMID: 19663456
PDF is available here.
PDF is available here.
Abstract
We give an account on how we observed an opposite phenomenon termed aggregation-induced emission (AIE) and identified the restriction of intramolecular rotation as a main cause for the AIE effect. Based on the mechanistic understanding, we developed a series of new fluorescent and phosphorescent AIE...
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PMID: 19597589
PDF is available here.
PDF is available here.
Abstract
The effects of pH, ionic strength, and temperature on sorption of Eu(III) on attapulgite were investigated in the presence and absence of fulvic acid (FA) and humic acid (HA). The results indicated that the sorption of Eu(III) on attapulgite was strongly dependent on pH and ionic strength, and indep...
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PMID: 19731676
PDF is available here.
PDF is available here.
Journal of Physical Chemistry A: Molecules, Spectroscopy, Kinetics, Environment and General Theory (113)30 2009
Abstract
We observe all of these species (see Scheme 1). As the pressure in the tubular reactor is raised, the photoionization mass spectra show clear evidence for the formation of aromatic hydrocarbons....
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PMID: 19719311
PDF is available here.
PDF is available here.
Abstract
We show that the broad experimental absorption spectrum for silanone centers [V. A. Radtsig and I. M. Senchenya Russ. Chem. Bull. 45, 1849 (1996)] is most likely the result of a synergetic combination of inhomogeneous broadening, thermal broadening and the small energy differences between different...
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PMID: 19624219
PDF is available here.
PDF is available here.
Abstract
We use single silicon nitride nanopores to study folded, partially folded, and unfolded single proteins by measuring their excluded volumes. The DNA-calibrated translocation signals of beta-lactoglobulin and histidine-containing phosphocarrier protein match quantitatively with that predicted by a si...
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PMID: 19530678
PDF is available here.
PDF is available here.
Zhongguo Xiufu Chongjian Waike Zazhi/Chinese Journal of Reparative and Reconstructive Surgery (23)7 2009
Abstract
Primary healing of the incisions was achieved in all cases. The nasal deformity was corrected. The postoperative follow-up period was 12-18 months with an average of 15.6 months. All the patients of regional cartilage scars had no complication. The figure of nose was slinky, the height of apex of no...
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PMID: 19662982
PDF is available here.
PDF is available here.
Optics Express (17)14 2009
Abstract
It is shown that the resonant frequencies and the transmission spectra of ring resonators can be adjusted by depositing or etching the cladding nitride layer on the ring waveguide without introducing an extra loss or extra variations of channel spacing. The cladding nitride layer increases the minim...
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PMID: 19582102
PDF is available here.
PDF is available here.
Optics Express (17)14 2009
Abstract
We demonstrate that a series of one-dimensional photonic crystals made of any dielectric materials, with the periods are distributed in a geometrical progression of a common ratio, r < rc (theta,P), where rc is a structural parameter that depends on the angle of incidence, theta, and polarization, P...
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PMID: 19582071
PDF is available here.
PDF is available here.
Medical Physics (36)7 2009
Abstract
Active matrix, flat-panel imagers (AMFPIs) employing a 2D matrix of a-Si addressing TFTs have become ubiquitous in many x-ray imaging applications due to their numerous advantages. However, under conditions of low exposures and/or high spatial resolution, their signal-to-noise performance is constra...
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PMID: 19673229
PDF is available here.
PDF is available here.
Medical Physics (36)7 2009
Abstract
Dosimetric properties of an amorphous-silicon electronic portal imaging device (EPID) operated in a real-time acquisition mode were investigated. This mode will be essential for time-resolved dose verification of dynamic (sliding window) intensity modulated radiation therapy (IMRT) and intensity mod...
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PMID: 19673202
PDF is available here.
PDF is available here.
Abstract
We quantified the in vitro calibration relationships between high frequency electrical stimulation and GABA and glutamate release in both mature retinoic acid differentiated P19 neurons and immortalized embryonic cortical cells engineered to express glutamic acid decarboxylase, GAD65. Extracellular...
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PMID: 19575508
PDF is available here.
PDF is available here.
Abstract
We report the fabrication and experimental testing of 1-D 23-element capacitive micromachined ultrasonic transducer (CMUT) arrays that have been fabricated using a novel wafer-bonding process whereby the membrane and the insulation layer are both silicon nitride. The membrane and cell cavities are d...
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PMID: 19473926
PDF is available here.
PDF is available here.
Ying yong sheng tai xue bao = The journal of applied ecology / Zhongguo sheng tai xue xue hui, Zhongguo ke xue yuan Shenyang ying yong sheng tai yan jiu suo zhu ban (20)4 2009
Abstract
By the methods of adsorption and soil column leaching, a laboratory simulation test was conducted to study the effects of palygorskite application on the volatilization and leaching losses of urea nitrogen in loess soil. Comparing with applying urea fertilizer alone, the addition of palygorskite cou...
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PMID: 19565762
PDF is available here.
PDF is available here.
Abstract
Hydrosilylation reaction of various fluoroalkylated alkynes with Et(3)SiH in the presence of a catalytic amount of Co(2)(CO)(8) was investigated. The hydrosilylation of the alkynes having fluoroalkyl and aryl groups took place smoothly with good regioselectivity (ca. 80:20). In sharp contrast, the r...
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PMID: 19262936
PDF is available here.
PDF is available here.
Abstract
We show that automatic tomography of biological and geological samples can be achieved by serial sectioning with a focused ion beam and block-face imaging using low-kV backscattered electrons. In addition, a new ion milling geometry is used that reduces the effects of intensity gradients that are in...
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PMID: 19250458
PDF is available here.
PDF is available here.
Abstract
Silicon-substituted hydroxyapatite/poly(epsilon-caprolactone) composite coatings were prepared on titanium substrate by electrophoretic deposition in n-butanol and chloroform mixture. The effect of the concentration of poly(epsilon-caprolactone) in suspension on the morphology and the microstructure...
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PMID: 18949536
PDF is available here.
PDF is available here.
Abstract
We show that amorphous silicon carbide and magnesium alloy stent surfaces markedly lower the rate of platelet adhesion and platelet/fibrin activation when compared with uncoated stainless steel or cobalt chromium alloy surfaces. Semiconductor materials on the stent surface reduce platelet and fibrin...
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PMID: 19235237
PDF is available here.
PDF is available here.
Abstract
There has been rapid progress in recent years in extending gene transfer capabilities to include plant species that fall outside the normal host range of Agrobacterium. Methods that allow direct DNA delivery into plant cells have contributed significantly to this expanded capability. Whiskers treatm...
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PMID: 19378002
PDF is available here.
PDF is available here.
Ultrasonics (49)1 2009
Abstract
A non-destructive testing method for silicon nitride bearing balls based on ultrasonic resonance spectroscopy is proposed here. Through the theoretical study of their elastic vibrations, it is possible to characterize the balls using a vibration mode that is similar to surface wave propagation. The...
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PMID: 18657837
PDF is available here.
PDF is available here.
Operative Dentistry (34)1 2009
Abstract
This study evaluated the influence of adhesive layer thickness (ADL) on the resin-dentin bond strength of two adhesive systems (AS) after thermal and mechanical loading (TML). A flat superficial dentin surface was exposed with 600-grit SiC paper on 40 molars. After primer application, the adhesive l...
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PMID: 19192838
PDF is available here.
PDF is available here.
Operative Dentistry (34)2 2009
Abstract
One-step self-etch adhesives showed higher bond strengths on ground enamel and no reductions in resin-enamel bonds were observed after 12 M of water storage....
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PMID: 19363974
PDF is available here.
PDF is available here.
Abstract
We describe the details on how these nanopores were fabricated and characterized, the nanopore sensing system setup, and protocols of using these nanopores to characterize DNA and protein molecules....
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PMID: 19488695
PDF is available here.
PDF is available here.
Abstract
Confining DNA molecules in a nanofluidic channel, particularly in channels with cross sections comparable to the persistence length of the DNA molecule (about 50 nm), allows the discovery of new biophysical phenomena. This sub-100 nm nanofluidic channel can be used as a novel platform to study and a...
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PMID: 19488690
PDF is available here.
PDF is available here.
Abstract
Three-ring circus: An expedient route to tricyclic fused 2-trimethylsilyl-3-aminopyridines exhibiting unprecedented skeletons is described. The key step is a very efficient cobalt-catalyzed [2+2+2] cycloaddition of a polyunsaturated compound displaying an ynamide, an alkyne, and a nitrile functional...
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PMID: 19142937
PDF is available here.
PDF is available here.
Abstract
Sorption of Th(IV) on attapulgite was studied as a function of pH and temperature under ambient conditions using batch technique. The results indicated that sorption of Th(IV) on attapulgite was strongly affected by pH values and temperature. The kinetic sorption of Th(IV) can be described by pseudo...
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PMID: 18951031
PDF is available here.
PDF is available here.
Cytotherapy (11)6 2009
Abstract
The large numbers of hASC resident in adipose tissue and their differentiation features suggest that they could be used for a successful bone regeneration process in vivo. We have shown that age does not seem to affect cell viability and in vitro adipocytic differentiation significantly, whereas it...
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PMID: 19878065
PDF is available here.
PDF is available here.
Nano Letters (9)1 2009
Abstract
Solid-state nanopores fabricated by a high-intensity electron beam in ceramic membranes can be fine-tuned on three-dimensional geometry and composition by choice of materials and beam sculpting conditions. For similar beam conditions, 8 nm diameter nanopores fabricated in membranes c...
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PMID: 19143508
PDF is available here.
PDF is available here.
Nano Letters (9)1 2009
Abstract
Solid-state nanopores fabricated by a high-intensity electron beam in ceramic membranes can be fine-tuned on three-dimensional geometry and composition by choice of materials and beam sculpting conditions. For similar beam conditions, 8 nm diameter nanopores fabricated in membranes c...
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PMID: 19143508
PDF is available here.
PDF is available here.
Nano Letters (9)1 2009
Abstract
Solid-state nanopores fabricated by a high-intensity electron beam in ceramic membranes can be fine-tuned on three-dimensional geometry and composition by choice of materials and beam sculpting conditions. For similar beam conditions, 8 nm diameter nanopores fabricated in membranes c...
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PMID: 19143508
PDF is available here.
PDF is available here.
Nano Letters (9)1 2009
Abstract
Solid-state nanopores fabricated by a high-intensity electron beam in ceramic membranes can be fine-tuned on three-dimensional geometry and composition by choice of materials and beam sculpting conditions. For similar beam conditions, 8 nm diameter nanopores fabricated in membranes c...
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PMID: 19143508
PDF is available here.
PDF is available here.