keyword
MENU ▼
Read by QxMD icon Read
search

Stabilization

keyword
https://www.readbyqxmd.com/read/28454481/aln-surface-passivation-of-gan-based-high-electron-mobility-transistors-by-plasma-enhanced-atomic-layer-deposition
#1
An-Jye Tzou, Kuo-Hsiung Chu, I-Feng Lin, Erik Østreng, Yung-Sheng Fang, Xiao-Peng Wu, Bo-Wei Wu, Chang-Hong Shen, Jia-Ming Shieh, Wen-Kuan Yeh, Chun-Yen Chang, Hao-Chung Kuo
We report a low current collapse GaN-based high electron mobility transistor (HEMT) with an excellent thermal stability at 150 °C. The AlN was grown by N2-based plasma enhanced atomic layer deposition (PEALD) and shown a refractive index of 1.94 at 633 nm of wavelength. Prior to deposit AlN on III-nitrides, the H2/NH3 plasma pre-treatment led to remove the native gallium oxide. The X-ray photoelectron spectroscopy (XPS) spectroscopy confirmed that the native oxide can be effectively decomposed by hydrogen plasma...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28454428/the-regulation-of-proteins-associated-with-the-cytoskeleton-by-hepatitis-b-virus-x-protein-during-hepatocarcinogenesis
#2
Fanyun Kong, Hongjuan You, Renxian Tang, Kuiyang Zheng
Hepatocellular carcinoma (HCC) is a major malignant disease worldwide, and chronic hepatitis B virus (HBV) infection is one of the primary causes for this type of cancer. Hepatitis B virus X protein (HBx) is a non-structural protein encoded by the viral genome that has significant effects on the pathogenesis of HCC. With the development of high-throughput assays and technologies, the abnormal HBx-induced expression of certain cellular proteins with assorted biological functions has been investigated. These target proteins identified by various methods include specific proteins associated with the cellular cytoskeleton, which contribute to HBx-induced hepatocarcinogenesis...
April 2017: Oncology Letters
https://www.readbyqxmd.com/read/28454142/in-situ-sers-monitoring-of-plasmonic-nano-dopants-during-photopolymerization
#3
Ruoping Li, Yanmeng Li, Junhe Han, Mingju Huang
The motion of the plasmonic nano-dopant in photopolymers was monitored in situ and in real time using the surface-enhanced Raman scattering (SERS) technique. Here an Au@MBA@Ag (core-molecule-shell) nanoparticle colloid was synthesized to act as the nano-dopant and adsorbed 4-mercaptobenzoic acid (MBA) between the Au cells and Ag shells as the internal standard. The changes of the MBA signal closely reflect the motion of nanoparticles, since the MBA signal itself has time stability. Experimental data indicate that the optimized concentration of the nano-dopant can be obtained based on the peak intensity change of MBA at 1583  cm<sup>-1</sup>...
May 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28454134/self-stabilization-of-an-optical-frequency-comb-using-a-short-path-length-interferometer
#4
James P Cahill, Weimin Zhou, Curtis R Menyuk
We stabilized the repetition rate of an optical frequency comb using a self-referenced phase-locked loop. The phase-locked loop generated its error signal with a fiber-optic delay-line interferometer that had a path-length difference of 8 m. We used the stabilized repetition rate to generate a 10 GHz signal with a single-sideband phase noise that was limited by environmental noise to -120  dBc/Hz at an offset frequency of 1 kHz. Modeling results indicate that thermoconductive noise sets a fundamental phase noise limit for an 8 m interferometer of -152  dBc/Hz at a 1 kHz offset frequency...
May 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28454129/photostability-of-pulsed-laser-deposited-as-sub-x-sub-te-sub-100-x-sub-x-40-50-60-amorphous-thin-films
#5
Petra Hawlová, Marek Bouška, Virginie Nazabal, Emeline Baudet, Zdeněk Černošek, Petr Němec
As<sub>x</sub>Te<sub>100-x</sub> amorphous thin films were fabricated by a pulsed laser deposition technique with the aim of finding photostable layers in as-deposited but preferably in relaxed (annealed) state. Photostability was studied in terms of the films' stability of refractive index and bandgap under near-bandgap light irradiation. As<sub>40</sub>Te<sub>60</sub> and As<sub>50</sub>Te<sub>50</sub> layers were found to be photostable in both as-deposited as well as relaxed states...
May 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28454126/stabilized-microwave-frequency-transfer-using-optical-phase-sensing-and-actuation
#6
Sascha W Schediwy, David R Gozzard, Simon Stobie, J A Malan, Keith Grainge
We present a stabilized microwave-frequency transfer technique that is based on optical phase sensing and optical phase actuation. This technique shares several attributes with optical-frequency transfer and, therefore, exhibits several advantages over other microwave-frequency transfer techniques. We demonstrated the stabilized transfer of an 8000 MHz microwave-frequency signal over a 166 km metropolitan optical fiber network, achieving a fractional frequency stability of 6.8×10<sup>-14</sup>  Hz/Hz at 1 s integration and 5...
May 1, 2017: Optics Letters
https://www.readbyqxmd.com/read/28454093/hsp90-inhibitor-17-dmag-exerts-anticancer-effects-against-gastric-cancer-cells-principally-by-altering-oxidant-antioxidant-balance
#7
Jeong Goo Kim, Sang Chul Lee, Ok-Hee Kim, Kee-Hwan Kim, Kyo Young Song, Sang Kuon Lee, Byung Jo Choi, Wonjun Jeong, Say-June Kim
Heat shock protein 90 (HSP90) stabilizes numerous oncoproteins and, therefore, its inhibition has emerged as a promising antineoplastic strategy for diverse malignancies. In this study, we determined the therapeutic effects and mechanisms of action of a specific HSP90 inhibitor, 17-dimethylamino-ethylamino-17-demethoxygeldanamycin (17-DMAG), in gastric cancer cell lines (AGS, SNU-1, and KATO-III), patient-derived tissues, and a mouse xenograft model. 17-DMAG exerted anticancer effects against gastric cancer cells, manifested by significantly decreased proliferation rates (P < 0...
April 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/28454076/carbazole-based-nanoprobe-for-selective-recognition-of-fe-3-ion-in-aqueous-medium-spectroscopic-insight
#8
Sonali B Suryawanshi, Prasad G Mahajan, Anita J Bodake, Govind B Kolekar, Shivajirao R Patil
A simple carbazole based nanoprobe prepared by reprecipitation method shows selective sensing behavior for Fe(3+) ion in aqueous medium. The prepared SDS capped 9-phenyl carbazole nanoparticles (9-PCzNPs) has narrower particle size distribution with an average diameter 35nm and zeta potential of -34.3mV predicted a good stability with negative surface charge over the nanoparticles. The Field Emission Scanning Electron Microscopy (FE-SEM) image showed cubic shape morphology of nanoparticles. The aqueous suspension of SDS capped 9-phenyl carbazole nanoparticles exhibited aggregation induced enhanced red shifted intense emission in comparison with the emission arising from dilute solution of 9-phenyl carbazole in DCM...
April 18, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28454073/low-temperature-raman-spectra-of-the-2-%C3%AE-methylbenzylamino-5-nitropyridine-crystal
#9
G S Pinheiro, M N G Ferreira Júnior, A O Dos Santos, P T C Freire, J A Lima, C E S Nogueira, L P Cardoso, J N Sherwood, C M R Remédios
The polar organic 2-(α-methylbenzylamino)-5-nitropyridine crystal (MBANP) has been studied by Raman spectroscopy at low temperatures (from 300 to 10K). The effect of temperature change on the vibrational spectrum is discussed with the aid of DFT calculations. The behavior of the Raman spectra indicates that MBANP molecules present a different conformation at low temperatures associated with the rotation of the phenyl and pyridine rings. Temperature-dependent X-ray measurements and differential scanning calorimetry (DSC) analysis were utilized as complementary techniques to investigate the structural stability of MBANP crystal...
April 20, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28454062/self-assembled-dehydropeptide-nano-carriers-for-delivery-of-ornidazole-and-curcumin
#10
Smriti Rekha Deka, Santosh Yadav, Dheeresh Kumar, Sumit Garg, Manohar Mahato, Ashwani Kumar Sharma
In the recent studies, it has been demonstrated that incorporation of unnatural amino acid, α,β-dehydrophenylalanine, in small peptides results in stable self-assembled nanostructures with different sizes and shapes. Here, we have replaced the natural amino acid, phenylalanine, from our earlier reported work on self-assembled peptide, Boc-Pro-Phe-Gly-OMe, with a constrained dehydro amino acid, α,β-dehydrophenylalanine, to study its influence on self-assembled nanostructures. Dehydrotripeptide, Boc-Pro-ΔPhe-Gly-OMe, self-assembled into nanostructures in aqueous solutions and formed hydrophobic matrix with improved encapsulation efficiency of hydrophobic molecules...
April 20, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28454048/antibacterial-activity-of-biochemically-capped-iron-oxide-nanoparticles-a-view-towards-green-chemistry
#11
Rabia Irshad, Kamran Tahir, Baoshan Li, Aftab Ahmad, Azka R Siddiqui, Sadia Nazir
A green approach to fabricate nanoparticles has been evolved as a revolutionary discipline. Eco-compatible reaction set ups, use of non-toxic materials and production of highly active biological and photocatalytic products are few benefits of this greener approach. Here, we introduce a green method to synthesize Fe oxide NPs using Punica granatum peel extract. The formation of Fe oxide NPs was optimized using different concentrations of peel extract (20mL, 40mL and 60mL) to achieve small size and better morphology...
April 19, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28454019/adsorption-of-carbon-dots-onto-al2o3-in-aqueous-experimental-and-theoretical-studies
#12
Xia Liu, Jiaxing Li, Xiaohua Wu, Zhi Zeng, Xianlong Wang, Tasawar Hayat, Xiaodong Zhang
Increasing interests in carbon dots (CDs) research resulted in the increased production of CDs and the risk to be released into the environment, including surface water and groundwater. To assess the environmental behavior of CDs, the stability of CDs in aqueous solutions were first examined by different environmental conditions, followed by the systematic investigation of the adsorption behaviors of CDs onto Al2O3 surface. Electrostatic interactions were considered as the dominant forces in CDs adsorption onto Al2O3 process, which were further confirmed by controlling experiments as compared with other minerals or oxides, such as montmorillonite, kaolinite and SiO2...
April 25, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28453981/facile-synthesis-of-flower-like-ag3vo4-bi2wo6-heterojunction-with-enhanced-visible-light-photocatalytic-activity
#13
Shijie Li, Shiwei Hu, Wei Jiang, Yu Liu, Jianshe Liu, Zhaohui Wang
Constructing novel semiconductor heterojunctions is one of the most significant approaches to improving the photocatalytic performance of a photocatalyst. Herein, the Ag3VO4/Bi2WO6 heterojunction was prepared through in-situ anchoring Ag3VO4 nanoparticles (size: ∼21nm) on the surface of Bi2WO6 microflowers (diameter: 2.5-4.5μm) by a facile deposition route. The photocatalytic activity of these heterojunctions were studied by decomposing cationic dye rhodamine B (RhB), anionic dye methyl orange (MO) and neutral para-chlorophenol (4-CP) under visible light irradiation (λ>400nm)...
April 20, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28453980/effect-of-ultimate-ph-and-ageing-on-thermal-denaturation-of-bovine-muscle-proteins
#14
Juan D Rios-Mera, Jair Sebastião da Silva Pinto, Carmen J Contreras-Castillo
The thermal denaturation of proteins was evaluated in the natural state of bovine muscle using differential scanning calorimetry (DSC). The Longissimus lumborum muscle was selected according to ultimate pH (pHu) values classified into two groups: low pHu with values between 5.4 and 5.8, and intermediate pHu with values between 5.81 and 6.19. The muscles were cut and aged at 2°C up to 21d post mortem. The three maximum temperatures of denaturation (Tmax1, Tmax2, Tmax3) found in muscle were evaluated, showing higher thermal stability in the intermediate pHu group, which could be an indicator of protection of proteins against aggregation or enzymatic activity...
April 20, 2017: Meat Science
https://www.readbyqxmd.com/read/28453979/effects-of-replacement-of-beef-fat-with-interesterified-palm-kernel-oil-on-the-quality-characteristics-of-turkish-dry-fermented-sausage
#15
Birol Kılıç, Cem Okan Özer
The objective of this study was to investigate the effects of replacing beef fat with enzymatic interesterified palm kernel oil (IPKO) on the quality characteristics and storage stability of sucuk (Turkish dry-fermented sausage). The partial (25, 50, 75%) and complete (100%) replacement of added beef fat with IPKO were carried out during sucuk processing. According to the study results, replacement of beef fat with IPKO resulted in significant increase in the concentrations of caprylic, capric, lauric and mryistic acid and decrease in the concentrations of stearic, oleic and linoleic acid in sucuk (P<0...
April 21, 2017: Meat Science
https://www.readbyqxmd.com/read/28453951/are-biodegradable-plates-applicable-in-endoscope-assisted-open-reduction-and-internal-fixation-of-mandibular-subcondyle-fractures
#16
Jang-Ho Son, Jinhee Ha, Yeong-Cheol Cho, Iel-Yong Sung
PURPOSE: To investigate whether biodegradable plates are applicable in endoscope-assisted open reduction and internal fixation (EAORIF) of mandibular subcondyle fractures. MATERIALS AND METHODS: This retrospective case-series study included patients with mandibular subcondyle fractures treated with EAORIF using an unsintered hydroxyapatite particles/poly-l-lactide biodegradable plate system, with at least 6 months of clinical follow-up data available. The outcome variables were fracture healing with postoperative stability and postoperative complications...
April 4, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28453932/a-green-route-to-a-na2fepo4f-based-cathode-for-sodium-ion-batteries-of-high-rate-and-long-cycling-life
#17
Xiang Deng, Wenxiang Shi, Jaka Sunarso, Meilin Liu, Zongping Shao
Sodium-ion batteries (SIBs) are considered one of the most promising alternatives for large-scale energy storage due largely to the abundance and low cost of sodium. However, the lack of high-performance cathode materials at low cost represents a major obstacle towards broad commercialization of SIB technology. In this work, we report a green route strategy that allows cost-effective fabricaiton of carbon-coated Na2FePO4F cathode for SIBs. By using vitamin C as a green organic carbon source and environment-friendly water-based polyacrylic latex as the binder, we have demonstrated that the Na2FePO4F phase in the as-derived Na2FePO4F/C electrode shows a high reversible capacity of 117 mAh g-1 at a cycling rate of 0...
April 28, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28453926/fluoropolymer-stabilized-chromophore-catalyst-assemblies-in-aqueous-buffer-solutions-for-water-oxidation-catalysis
#18
Michael S Eberhart, Kyung-Ryang Wee, Degao Wang, Seth Marquard, Kasey Skinner, Animesh Nayak, Thomas J Meyer
We describe here application of the fluorinated polymer (Dupont AF, a copolymer of 4,5-difluoro-2,2-bis(trifluoromethyl)-1,3-dioxole and tetrafluoroethylene) in stabilizing phosphonate-derivatized molecular assemblies on oxide electrodes. In the procedure, the polymer is dip coated onto the surfaces of oxide electrodes with pre-bound, phosphonate-derivatized chromophores and assemblies including assemblies for water oxidation. The results of our experiments demonstrate a high degree of stabilization by the added polymer and a demonstration of its use in stabilizing surface-bound assemblies for water oxidation catalysis...
April 28, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28453855/newly-characterized-interaction-stabilizes-dna-structure-oligoethylene-glycols-stabilize-g-quadruplexes-ch-%C3%AF-interactions
#19
Hisae Tateishi-Karimata, Tatsuya Ohyama, Takahiro Muraoka, Peter Podbevsek, Adam M Wawro, Shigenori Tanaka, Shu-Ichi Nakano, Kazushi Kinbara, Janez Plavec, Naoki Sugimoto
Oligoethylene glycols are used as crowding agents in experiments that aim to understand the effects of intracellular environments on DNAs. Moreover, DNAs with covalently attached oligoethylene glycols are used as cargo carriers for drug delivery systems. To investigate how oligoethylene glycols interact with DNAs, we incorporated deoxythymidine modified with oligoethylene glycols of different lengths, such as tetraethylene glycol (TEG), into DNAs that form antiparallel G-quadruplex or hairpin structures such that the modified residues were incorporated into loop regions...
April 27, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28453818/downstream-element-determines-rnase-y-cleavage-of-the-saepqrs-operon-in-staphylococcus-aureus
#20
Gabriella Marincola, Christiane Wolz
In gram-positive bacteria, RNase J1, RNase J2 and RNase Y are thought to be major contributors to mRNA degradation and maturation. In Staphylococcus aureus, RNase Y activity is restricted to regulating the mRNA decay of only certain transcripts. Here the saePQRS operon was used as a model to analyze RNase Y specificity in living cells. A RNase Y cleavage site is located in an intergenic region between saeP and saeQ. This cleavage resulted in rapid degradation of the upstream fragment and stabilization of the downstream fragment...
April 27, 2017: Nucleic Acids Research
keyword
keyword
64242
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"