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PubMed Journals Articles About "Aphria Stock Needs Catalyst Moving Once Again" RSS

10:24 EDT 21st March 2019 | BioPortfolio

Aphria Stock Needs Catalyst Moving Once Again PubMed articles on BioPortfolio. Our PubMed references draw on over 21 million records from the medical literature. Here you can see the latest Aphria Stock Needs Catalyst Moving Once Again articles that have been published worldwide.

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Showing "Aphria Stock Needs Catalyst Moving Once Again" PubMed Articles 1–25 of 1,800+

Forecasting stock prices with a feature fusion LSTM-CNN model using different representations of the same data.

Forecasting stock prices plays an important role in setting a trading strategy or determining the appropriate timing for buying or selling a stock. We propose a model, called the feature fusion long short-term memory-convolutional neural network (LSTM-CNN) model, that combines features learned from different representations of the same data, namely, stock time series and stock chart images, to predict stock prices. The proposed model is composed of LSTM and a CNN, which are utilized for extracting temporal ...


The perception of sub-clinical personality disorders by employers, employees and co-workers.

This study set out to determine people's perceptions of different dark-side personality types in the workplace. A total of 240 adults with at least one year's work experience rated vignettes describing job candidates with sub-clinical PDs. PDs were grouped into (Hogan and Hogan's 1997) personality clusters 'Moving Away from', 'Moving Against' and 'Moving Toward' others. PDs in the Moving Toward cluster were rated as the most desirable employees. Participants were least willing to work with or for PDs in the...

Single women and stock investment in individual retirement accounts.

This study uses data from the 2013 Survey of Consumer Finances to investigate factors related to stock investment in individual retirement accounts and focuses on the role of gender and marital status in particular. This study finds that single women are less likely to own stocks and invest in fewer stocks in their IRAs. Personal characteristics, such as stock ownership in other financial assets, education level, and risk tolerance may play a key role in shaping individuals' decisions regarding stock invest...


Stock-outs of antiretroviral and tuberculosis medicines in South Africa: A national cross-sectional survey.

HIV and TB programs have rapidly scaled-up over the past decade in Sub-Saharan Africa and uninterrupted supplies of those medicines are critical to their success. However, estimates of stock-outs are largely unknown. This survey aimed to estimate the extent of stock-outs of antiretroviral and TB medicines in public health facilities across South Africa, which has the world's largest antiretroviral treatment (ART) program and a rising multidrug-resistant TB epidemic.

Co-pyrolysis of biomass and soapstock in a downdraft reactor using a novel ZSM-5/SiC composite catalyst.

A ZSM-5/SiC composite catalyst was synthesized and characterized by Brunauer-Emmett-Teller analysis, X-ray diffraction, and scanning electron microscopy in this study. The composite catalyst had the characteristics of ZSM-5 and SiC, and the surface of SiC grew evenly with a layer of ZSM-5. The effect of the composite catalyst on the product distribution and chemical composition in a co-pyrolysis downdraft system was investigated. In a down system with a catalytic temperature of 450 °C, a feed-to-catalyst...

Improving Stock Closing Price Prediction Using Recurrent Neural Network and Technical Indicators.

This study focuses on predicting stock closing prices by using recurrent neural networks (RNNs). A long short-term memory (LSTM) model, a type of RNN coupled with stock basic trading data and technical indicators, is introduced as a novel method to predict the closing price of the stock market. We realize dimension reduction for the technical indicators by conducting principal component analysis (PCA). To train the model, some optimization strategies are followed, including adaptive moment estimation (Adam)...

Selection of the optimal trading model for stock investment in different industries.

In general, the stock prices of the same industry have a similar trend, but those of different industries do not. When investing in stocks of different industries, one should select the optimal model from lots of trading models for each industry because any model may not be suitable for capturing the stock trends of all industries. However, the study has not been carried out at present. In this paper, firstly we select 424 S&P 500 index component stocks (SPICS) and 185 CSI 300 index component stocks (CSICS)...

Spatially-explicit estimate of soil nitrogen stock and its implication for land model across Tibetan alpine permafrost region.

Permafrost soils store a large amount of nitrogen (N) which could be activated under the continuous climate warming. However, compared with carbon (C) stock, little is known about the size and spatial distribution of permafrost N stock. By combining measurements from 519 pedons with two machine learning models (supporting vector machine (SVM) and random forest (RF)), we estimated the size and spatial distribution of N stock across the Tibetan alpine permafrost region. We then compared these spatially-expl...

Heavy metal poisoned and regeneration of selective catalytic reduction catalysts.

Being poison to heterogeneous catalysts, Pb and As are important metals in the study of industrial NO emission reductions. A series of VO-WO/TiO-SiO catalysts poisoned by Pb and As were prepared through wet impregnation. The regeneration effect of deionized water, acid solution, complexing agent, and alkali solution on a poisoned catalyst was evaluated through experimental and theoretical calculations. For a Pb-poisoned catalyst, deionized water, acetic acid, and triethylenetetramine were used to wash. NO c...

Magnetic hybrid of cyclodextrin nanosponge and polyhedral oligomeric silsesquioxane: Efficient catalytic support for immobilization of Pd nanoparticles.

For the first time a novel magnetic catalyst was prepared through hybridization of functionalized cyclodextrin nanosponges and octakis(3-chloropropyl)octasilsesquioxane followed by incorporation of Pd and magnetic nanoparticles. The resulting composite, was utilized as an efficient heterogeneous catalyst for promoting Sonogashira and Heck reactions in the absence of any ligand and co-catalyst under mild reaction condition. Comparison of the catalytic activities of the control catalysts and the catalyst conf...

Peculiar behavior of Si cluster ions in a high-energy-density solid Al plasma.

Peculiar behavior is found in a Si cluster ion, moving with a speed of ∼0.22c (c: speed of light) in a solid Al plasma in the context of cluster-ion beam driven inertial confinement fusion: The Si ion, moving closely behind the forward-moving Si ion for a distance of several Å in the cluster, feels the wake field generated by the forward Si. The acceleration interaction force on the rear Si ion by the forward-moving ion may balance with the deceleration backward force in the longitudinal-moving direction...

Microwave field: High temperature dielectric properties and heating characteristics of waste hydrodesulfurization catalysts.

The exploration of the dielectric properties of waste hydrodesulfurization catalysts has important guiding significance for the development of microwave heat treatment of waste hydrodesulfurization catalysts for the recovery of valuable metals. The resonant cavity perturbation technique was used to measure the dielectric properties of waste catalyst and the mixture of waste catalyst and NaCO during roasting from room temperature to 700 °C at 2450 MHz. The heating properties of the waste catalyst and mixt...

Selective CO Evolution from Photoreduction of CO2 on a Metal-Carbide-Based Composite Catalyst.

A selective CO evolution from photoreduction of CO2 in wa-ter was achieved on a noble-metal-free, carbide-based compo-site catalyst, as demonstrated by a CO selectivity of 98.3% among all carbon-containing products and a CO evolution rate of 29.2 μmol h-1, showing superiority to noble-metal-based catalyst. A rapid separation of the photogenerated electron-hole pairs and improved CO2 adsorption on the surface of the carbide component are responsible for the excellent perfor-mance of the catalyst. The high C...

Catalytic fast pyrolysis of torrefied corn cob to aromatic hydrocarbons over Ni-modified hierarchical ZSM-5 catalyst.

Catalytic fast pyrolysis (CFP) of torrefied corn cob using Ni-modified hierarchical ZSM-5 catalyst was conducted in this study. The prepared catalysts were characterized by N adsorption and desorption (N-BET), X-ray diffraction (XRD), and temperature-programmed desorption of NH (NH-TPD). NaOH solution treatment resulted in the lower peak intensities of hierarchical ZSM-5 catalyst in the XRD patterns while Ni modification improved the catalyst framework. In addition, NaOH solution treatment created some meso...

What is multispecies MSY? A worked example from the North Sea.

The concept of an optimum yield at intermediate levels of fishing (the so called maximum sustainable yield or MSY) has been with us since the 1930s and is now enshrined in legislation as a key objective of fisheries management. The concept seems intuitively reasonable and is readily applicable to a single stock treated in isolation and assuming a constant environment. However, translating this concept into a mixed and multispecies fishery, where there are complex trade-offs between fleets and stocks and in ...

A comparative study of NiCoO catalyst supported on Ni foam and from solution residuals fabricated by a hydrothermal approach for electrochemical oxygen evolution reaction.

Residuals have rarely been granted attention when employing a hydrothermal approach to prepare binder-free supported catalysts. Using Ni foam supported NiCo2O4 catalyst for oxygen evolution reaction as an example, it was found that the catalytic activity of NiCo2O4 from the residuals loaded on glass carbon is comparable to Ni foam supported NiCo2O4, while the specific activity and turnover frequency value of the former catalyst are many times higher than that of the supported catalyst. In view of sustainabi...

Lewis acid promoted aerobic oxidative coupling of thiols with phosphonates by simple nickel(II) catalyst: Substrate scope and mechanistic studies.

: Exploring new catalyst for efficient organic synthesis is among the most attractive topics in chemistry. Here, using Ni(OAc)2/LA as catalyst (LA: Lewis acid), a novel catalyst strategy was developed for oxidative coupling of thiols and phosphonates to phosphorothioates with oxygen oxidant. The present studies disclosed that when Ni(OAc)2 alone was employed as the catalyst, the reaction proceeded very sluggishly with low yield, whereas adding non-redox-active metal ions like Y3+ to Ni(OAc)2 dramatically pr...

Amorphous phosphorus-doped MoS2 catalyst for efficient hydrogen evolution reaction.

Water splitting is an important method for producing clean and sustainable hydrogen to replace finite fossil fuels in future energy systems. MoS2 is reported as a promising catalyst without noble metallic element to accelerate electrocatalytic hydrogen evolution reaction (HER) rate. While, the further improvement of the MoS2-based catalyst is still strongly demanded to meet the real needs. In the present study, a novel amorphous phosphorus-doped MoS2 (P-MoS2) nanocomposite is prepared by a facile hydrotherm...

Glycerol Induced Catalyst-Free Curing of Epoxy and Vitrimer Preparation.

Epoxy vitrimers prepared from anhydride-cured epoxies exhibit, repairable and reprocessable properties; however, they generally rely on a large amount of catalyst for accelerating the dynamic transesterification (DTER). If the catalyst loading is not enough, the vitrimer properties will be limited. In this work, a preparation method of catalyst-free epoxy vitrimer is demonstrated by adding glycerol to an epoxy-anhydride curing system. The hydroxyls of glycerol first react with the anhydride to induce the ri...

Removal of multi-pollutant from flue gas utilizing ammonium persulfate solution catalyzed by Fe/ZSM-5.

A nano-sized iron loaded ZSM-5 zeolite (Fe/ZSM-5) catalyst was firstly used to activate (NH)SO solution for the simultaneous removal of multi-pollutant from flue gas. The simultaneous removal efficiencies 100% of SO, 72.6% of NO and 93.4% of Hg° were achieved under the condition that the catalyst dose was 0.8 g/L, concentration, pH and temperature of (NH)SO solution were 0.03 mol/L, 5 and 65 °C, respectively. The stability of catalyst was checked by a continuous test, proving that the catalytic acti...

Enhancing the production of light olefins and aromatics from catalytic fast pyrolysis of cellulose in a dual-catalyst fixed bed reactor.

In this study, the effects of a macroporous catalyst (CaO), mesoporous catalyst (MCM-41), and microporous catalysts (ZSM-5 and SAPO-34) on the production of light olefins and aromatics from cellulose catalytic fast pyrolysis were investigated in a dual-catalyst fixed bed reactor. Further the fractional catalytic pyrolysis of MCM-41 or CaO with ZSM-5 or SAPO-34 was explored. The results showed that ZSM-5 was the most efficient catalyst for the formation of light olefins and aromatics followed by MCM-41, CaO ...

Cu dimer anchored on CN monolayer: low-cost and efficient Bi-atom catalyst for CO oxidation.

By means of density functional theory (DFT) computations, we systemically investigated CO/O2 adsorption and CO oxidation pathways on a bi-atom catalyst, namely, a copper dimer anchored on a C2N monolayer (Cu2@C2N), and we compared it with its monometallic counterpart Cu1@C2N. The Cu dimer could be stably embedded into the porous C2N monolayer. The reactions between the adsorbed O2 and CO via both bi-molecular and tri-molecular Langmuir-Hinshelwood (L-H) and Eley-Rideal (E-R) mechanisms were comparably studi...

Magnetic mesoporous nanospheres supported phosphomolybdate-based ionic liquid for aerobic oxidative desulfurization of fuel.

Phosphomolybdate-based ionic liquid [(CH)NCH]PMoO was prepared and supported on a magnetic mesoporous silica (γ-FeO@SiO@mSiO) to obtain a magnetic mesoporous catalyst. The morphology and components of the catalyst were characterized by FT-IR, XRD, XPS, SEM, TEM, nitrogen adsorption-desorption isotherms, and VSM. With air as oxidant, the catalyst showed perfect desulfurization performance in oxidation of dibenzothiophene (DBT). The removal of DBT from model oil could reach 100% within 5 h at 120 °C. Af...

A Highly Active Bidentate Magnesium Catalyst for Amine-Borane Dehydrocoupling: Kinetic and Mechanistic Studies.

Herein we report a magnesium complex featuring a bidentate aminopyridinato ligand that is a remarkably selective catalyst for the dehydrocoupling of amine-boranes. This reaction proceeds to completion with low catalyst loadings (1 mol%) under mild conditions (60 °C), exceeding previously reported s-block systems in terms of selectivity, rate, and turnover number (TON). Mechanistic studies by in situ NMR analysis (which represent the first rigorous kinetic analysis of a magnesium catalyst for this class of ...

Production of an effective catalyst with increased oxygen vacancies from manganese slag for selective catalytic reduction of nitric oxide.

Manganese slag is a solid waste produced by the steel industry and usually lacks a proper recycling. In this paper, the manganese slag was used to synthesize a catalyst via microwave assistant method and applied in selective catalytic reduction of nitric oxide. As a result, the catalyst exhibited an excellent low-temperature activity. It removed 78.31% of nitric oxide at 100 °C, 44.44% higher than that of a slag-derived catalyst synthesized by ammonia impregnation, and 63.18% higher than that of a commer...


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