Synthesis of superconductors from soluble metal oxo alkoxide precursors

1993 ◽  
Vol 8 (7) ◽  
pp. 1487-1496 ◽  
Author(s):  
M.W. Rupich ◽  
Y.P. Liu ◽  
J. Ibechem ◽  
J.P. Hachey
Keyword(s):  
Thermal Processing ◽  
Intermediate Formation ◽  
Direct Conversion ◽  
Inert Atmosphere ◽  
Superconducting Phase ◽  
Large Area ◽  
Temperature Deposition ◽  
The Individual ◽  
Alkoxide Precursors ◽  
Potential Use

Soluble metal oxo alkoxide precursors are useful for the production of homogeneous, micron-sized YBa2Cu3O7−x powders and the fabrication of superconducting YBa2Cu3O7−x films on large area and nonplanar substrates. This paper describes the synthesis and chemistry of a series of soluble metal oxo alkoxide precursors for the YBa2Cu3O7−x superconducting material and the effect of the thermal processing conditions on the formation of the superconducting phase. We have found that the direct conversion of the metal oxo alkoxide precursors to an amorphous or crystalline YBa2Cu3O6.5 phase without the intermediate formation of the individual metal oxides or carbonates allows the formation of the superconducting phase at temperatures as low as 720 °C. The prevention of the intermediate formation of the metal oxide and carbonate phases is achieved by the controlled thermolysis of the metal oxo alkoxide precursors in an inert atmosphere. The precursors have potential use in the low-temperature deposition of films on large area or nonplanar surfaces and for the production of homogeneous powders.

scholarly journals The OsERF115/AP2EREBP110 Transcription Factor Is Involved in the Multiple Stress Tolerance to Heat and Drought in Rice Plants

2021 ◽  
Vol 22 (13) ◽  
pp. 7181
Author(s):  
Seong-Im Park ◽  
Hyeok Jin Kwon ◽  
Mi Hyeon Cho ◽  
Ji Sun Song ◽  
Beom-Gi Kim ◽  
...  
Keyword(s):  
Stress Tolerance ◽  
Transcriptional Activation ◽  
Individual Plant ◽  
Hormone Signaling ◽  
Combined Stress ◽  
Drought Treatment ◽  
Wide Range ◽  
The Individual ◽  
Potential Use ◽  
Multiple Stress Tolerance

The AP2/EREBP family transcription factors play important roles in a wide range of stress tolerance and hormone signaling. In this study, a heat-inducible rice ERF gene was isolated and functionally characterized. The OsERF115/AP2EREBP110 was categorized to Group-IIIc of the rice AP2/EREBP family and strongly induced by heat and drought treatment. The OsERF115/AP2EREBP110 protein targeted to nuclei and suppressed the ABA-induced transcriptional activation of Rab16A promoter in rice protoplasts. Overexpression of OsERF115/AP2EREBP110 enhanced thermotolerance of seeds and vegetative growth stage plants. The OsERF115/AP2EREBP110 overexpressing (OE) plants exhibited higher proline level and increased expression of a proline biosynthesis P5CS1 gene. Phenotyping of water use dynamics of the individual plant indicates that the OsERF115/AP2EREBP110-OE plant exhibited better water saving traits under heat and drought combined stress. Our combined results suggest the potential use of OsERF115/AP2EREBP110 as a candidate gene for genetic engineering approaches to develop heat and drought stress-tolerant crops.

Low Inductance Antenna (LIA) plasma source and plasma-enhanced dual rotatable magnetron sputter assisted with LIA

2015 ◽  
Vol 2015 (1) ◽  
pp. 000757-000760
Author(s):  
Y. Takaya ◽  
Y. Tanioka ◽  
H. Yoshino ◽  
A. Osawa
Keyword(s):  
Inductively Coupled Plasma ◽  
Low Voltage ◽  
Polymer Surface ◽  
Plasma Source ◽  
Large Area ◽  
Plasma Damage ◽  
Inductively Coupled ◽  
Temperature Deposition ◽  
Magnetron Sputter ◽  
Plasma Profile

In recent years, both low plasma damage and low temperature deposition technic for polymer substrates (e.g. PCB, films and etc.) are often required. We have developed a plasma enhanced dual rotatable magnetron sputter source assisted with inductively coupled plasma (ICP) using low inductance antenna (LIA). LIA has same unique characteristics, a)low voltage high density plasma, b)well controllability of plasma profile to ensure uniformity over large area, c)ionization of sputtered particle and etc. when in being used as a plasma assistant, and besides, LIA can be used as a ICP source for polymer surface modification. We introduce a variety of the possibilities of whether this sputter source is usable for the process of the fabrication of PCB.

scholarly journals Catalyst-free one step synthesis of large area vertically stacked N-doped graphene-boron nitride heterostructures from biomass source

Nanoscale ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 4391-4397 ◽  
Author(s):  
Ivan Esteve-Adell ◽  
Jinbao He ◽  
Fernando Ramiro ◽  
Pedro Atienzar ◽  
Ana Primo ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Inert Atmosphere ◽  
Large Area ◽  
Catalyst Free ◽  
Doped Graphene ◽  
One Step ◽  
The One

A procedure for the one-step preparation of films of few-layer N-doped graphene on top of nanometric hexagonal boron nitride sheets based on the pyrolysis at 900 °C under an inert atmosphere is reported.

Recent Progress in Industrial Applications of CAT-CVD (Hot-Wire Cvd)

2002 ◽  
Vol 715 ◽  
Author(s):  
Atsushi Masuda ◽  
Akira Izumi ◽  
Hironobu Umemoto ◽  
Hideki Matsumura
Keyword(s):  
High Efficiency ◽  
Film Formation ◽  
Industrial Applications ◽  
Life Extension ◽  
Flat Panel Display ◽  
Hot Wire ◽  
Large Area ◽  
Precise Control ◽  
Gaas Devices ◽  
Temperature Deposition

AbstractRapid progresses are achieved in catalytic CVD (Cat-CVD), often called hot-wire CVD, in the past 3-years NEDO national project in Japan. Cat-CVD technology presents many advantages in thin-film formation processes; high-efficiency of gas use, large-area deposition, no ion bombardment and low-temperature deposition even below 200°C. All of the elemental techniques for the industrially applicable Cat-CVD apparatuses, such as the suppression of the metal contamination, the precise control of the substrate temperature, the life extension of the catalyzer, 1-m size uniform deposition and the chamber cleaning, have been completely developed. Sophisticatedly designed substrate holder with electrostatic chuck and showerhead equipped with catalyzers are both key technologies for these achievements. High reproducibility for film properties is also obtained by controlling the reaction between high-density radicals and chamber walls. Prototype mass-production apparatus for SiNx passivation films in GaAs devices has been already developed and this will be probably the first application of Cat-CVD in industry. These recent movements appear to promise the drastic revolution in semiconductor and flat-panel display industries by introducing Cat-CVD in very near future.

Transformation of the individual MWCNT’s structure under electron irradiation and annealing in inert atmosphere

2019 ◽  
Author(s):  
V. V. Bolotov ◽  
G. N. Kamayev ◽  
V. E. Kan ◽  
E. V. Knyazev ◽  
K. E. Ivlev
Keyword(s):  
Electron Irradiation ◽  
Inert Atmosphere ◽  
The Individual

scholarly journals CONSERVATION AND DEMOCRACY

1943 ◽  
Vol 19 (3) ◽  
pp. 172-178
Author(s):  
A. B. Wheatley
Keyword(s):  
Natural Resources ◽  
Forest Land ◽  
Large Area ◽  
Southern Ontario ◽  
The Individual ◽  
General Wellbeing

The useful occupation of the total manpower of a nation is the first essential necessity for the general wellbeing of the whole, as well as for the individual. This condition is dependent upon an adequate use of all natural resources, particularly the renewable portion of those resources. Potential forest land comprises a very large area in Southern Ontario in addition to the total area composed of farmers' woodlots. These factors indicate that there is opportunity to make conservation in its broadest aspect, forestry activities in particular, a fulltime occupation for a larges number of inadequately employed people.

Micro-optics in lighting applications

2015 ◽  
Vol 4 (1) ◽  
Author(s):  
Wolfgang Mönch
Keyword(s):  
Light Emitting Diodes ◽  
Light Sources ◽  
Large Area ◽  
Light Emitters ◽  
Optical Elements ◽  
Optical Components ◽  
Light Emitting ◽  
Reflection And Refraction ◽  
Automotive Lighting ◽  
The Individual

AbstractThe intention of this article is to give a concise overview on current applications of micro-optical components in lighting, including general lighting, automotive lighting, projection, and display backlighting. Regarding the light sources, the focus of this paper is on inorganic light-emitting diodes (LEDs) and the characteristic problems encountered with them. Lasers, laser diodes, and organic light-emitting diodes (OLEDs) are out of scope of this paper. Micro-optical components for current applications of inorganic LEDs may be categorized essentially into three classes: First, components for light shaping, i.e., adjusting the intensity distribution to a desired target; second, components for light homogenization with respect to space and color, and third, large-area micro-optical elements. These large-area elements comprise micro-optical slabs and sheets for guiding, reflection, and refraction of light and are designed without regard to particular details of type, design, arrangement, and layout of the individual light emitters. References are given to textbooks and review articles to guide the interested reader to further and more detailed studies on the problems discussed here.

DECONVOLUTION METHOD ON OSL CURVES FROM ZrO2 IRRADIATED BY BETA AND UV RADIATIONS

2009 ◽  
Vol 23 (05) ◽  
pp. 699-707 ◽  
Author(s):  
T. RIVERA ◽  
G. KITIS ◽  
J. AZORÍN ◽  
C. FURETTA
Keyword(s):  
Dose Response ◽  
Decay Constant ◽  
Deconvolution Method ◽  
Response Behavior ◽  
Illumination Time ◽  
Curve Structure ◽  
First Order ◽  
The Individual ◽  
Order Components ◽  
Potential Use

This paper reports the optically stimulated luminescent (OSL) response of ZrO 2 to beta and ultraviolet radiations in order to investigate the potential use of this material as a radiation dosimeter. The experimentally obtained OSL decay curves were analyzed using the computerized curve de-convolution (CCD) method. It was found that the OSL curve structure, for the short (practical) illumination time used, consists of three first order components. The individual OSL dose response behavior of each component was found. The values of the time at the OSL peak maximum and the decay constant of each component were also estimated.

Fire spread from MODIS burned area data: obtaining fire dynamics information for every single fire

2016 ◽  
Vol 25 (12) ◽  
pp. 1228 ◽  
Author(s):  
David Frantz ◽  
Marion Stellmes ◽  
Achim Röder ◽  
Joachim Hill
Keyword(s):  
Large Scale ◽  
Fire Regimes ◽  
Fire Spread ◽  
Burned Area ◽  
Large Area ◽  
Fire Dynamics ◽  
Seed Point ◽  
Individual Object ◽  
The Individual ◽  
Area Data

Fire spread information on a large scale is still a missing key layer for a complete description of fire regimes. We developed a novel multilevel object-based methodology that extracts valuable information about fire dynamics from Moderate Resolution Imaging Spectroradiometer (MODIS) burned area data. Besides the large area capabilities, this approach also derives very detailed information for every single fire regarding timing and location of its ignition, as well as detailed directional multitemporal spread information. The approach is a top–down approach and a multilevel segmentation strategy is used to gradually refine the individual object membership. The multitemporal segmentation alternates between recursive seed point identification and queue-based fire tracking. The algorithm relies on only a few input parameters that control the segmentation with spatial and temporal distance thresholds. We present exemplary results that indicate the potential for further use of the derived parameters.

scholarly journals Development of an individual-based model for polioviruses: implications of the selection of network type and outcome metrics

2010 ◽  
Vol 139 (6) ◽  
pp. 836-848 ◽  
Author(s):  
H. RAHMANDAD ◽  
K. HU ◽  
R. J. DUINTJER TEBBENS ◽  
K. M. THOMPSON
Keyword(s):  
Network Structure ◽  
Critical Role ◽  
State Transitions ◽  
Different Types ◽  
Support Policy ◽  
The Individual ◽  
The Impact ◽  
Potential Use ◽  
Selection Of ◽  
Outcome Metrics

SUMMARYWe developed an individual-based (IB) model to explore the stochastic attributes of state transitions, the heterogeneity of the individual interactions, and the impact of different network structure choices on the poliovirus transmission process in the context of understanding the dynamics of outbreaks. We used a previously published differential equation-based model to develop the IB model and inputs. To explore the impact of different types of networks, we implemented a total of 26 variations of six different network structures in the IB model. We found that the choice of network structure plays a critical role in the model estimates of cases and the dynamics of outbreaks. This study provides insights about the potential use of an IB model to support policy analyses related to managing the risks of polioviruses and shows the importance of assumptions about network structure.

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