scholarly journals Disjointed sum of products by a novel technique of orthogonalizing ORing

2018 ◽  
Vol 16 (1) ◽  
pp. 392-406
Author(s):  
Yavuz Can
Keyword(s):  
Boolean Function ◽  
Differential Calculus ◽  
Novel Technique ◽  
Sum Of Products ◽  
One Step ◽  
Set Up ◽  
Orthogonal Form

AbstractThis work presents a novel combining method called ‘orthogonalizing ORing $\bigcirc\!\!\!\!\!\!\vee $’ which enables the building of the union of two conjunctions whereby the result consists of disjointed conjunctions. The advantage of this novel technique is that the results are already presented in an orthogonal form which has a significant advantage for further calculations as the Boolean Differential Calculus. By orthogonalizing ORing two calculation steps - building the disjunction and the subsequent orthogonalization of two conjunctions - are performed in one step. Postulates, axioms and rules for this linking technique are also defined which have to be considered getting correct results. Additionally, a novel equation, based on orthogonalizing ORing, is set up for orthogonalization of every Boolean function of disjunctive form. Thus, disjointed Sum of Products can be easily calculated in a mathematical way by this equation.

Two in one: bifunctional derivatives of trolox acting as antimalarial and antioxidant agents

2020 ◽  
Vol 12 (20) ◽  
pp. 1845-1854
Author(s):  
Florence Souard ◽  
Edwige Nicolle ◽  
Delphine Cressend ◽  
Alexis Valentin ◽  
Ahcène Boumendjel
Keyword(s):  
Antioxidant Activity ◽  
Ascorbic Acid ◽  
In Vivo Studies ◽  
Chemical Libraries ◽  
Falciparum Strain ◽  
Antioxidant Agents ◽  
One Step ◽  
Set Up ◽  
Derivatives Of

Background: The aim of the present work was to set-up compounds that are able to act simultaneously as antimalarial and antioxidants. Trolox, a known antioxidant was chosen as a core structure to ensure the antioxidant activity and contribute to antiplasmodial effect. Results: Ten compounds were prepared in one step and evaluated on chloroquino-sensitive (3D7) and chloroquino-resistant (FcB1) strains of Plasmodium falciparum. The most active compound (3d) shows antiplasmodial activity in the range of chloroquine against chloroquino-sensitive and chloroquino-resistant P. falciparum strain. The antioxidant activity of (3d) was conducted through four tests and was found to be more potent than trolox itself and L-ascorbic acid. Conclusion: Compound (3d) can be considered as an excellent lead molecule for further in vivo studies. This study paves the way for building large chemical libraries to be investigated in the field of malaria.

scholarly journals A Cross-Knotted Suture Basket Technique for Large Nonmagnetic Intraocular Foreign Body Removal

2020 ◽  
Vol 2020 ◽  
pp. 1-4
Author(s):  
Jian Cao ◽  
Baihua Chen ◽  
Yun Li
Keyword(s):  
Foreign Body ◽  
Foreign Bodies ◽  
Intraocular Foreign Body ◽  
Effective Alternative ◽  
Foreign Body Removal ◽  
Novel Technique ◽  
Clinical Investigations ◽  
Vicryl Suture ◽  
The Cross ◽  
Set Up

Purpose. To report a novel technique of cross-knotted suture basket and to test its effectiveness in large nonmagnetic intraocular foreign body (IOFB) removal. Methods. A 7/0 Vicryl suture was cut in half and cross-knotted, and four ends were introduced into a 23G needle to form a basket. Pig eyes were used to set up the IOFB model, and the effectiveness of the suture basket in the removal of large nonmagnetic intraocular foreign bodies was tested. Results. Several modifications can be made to adapt to different situations. For the materials (stone, metal, glass, and wood) and shapes (irregular, spherical, and rectangle) of large IOFB tested, the cross-knotted suture basket successfully removed all kinds of IOFBs. Conclusion. The suture basket technique provides an accessible, safe, and effective alternative in large nonmagnetic IOFB removal. It can be adapted and interchangedand also worth’s further clinical investigations.

scholarly journals Improving the Activity of Fe/C/N ORR Electrocatalyst Using Double Ammonia Promoted CO2 Laser Pyrolysis

2020 ◽  
Vol 6 (4) ◽  
pp. 63
Author(s):  
Henri Perez ◽  
Mathieu Frégnaux ◽  
Emeline Charon ◽  
Arnaud Etcheberry ◽  
Olivier Sublemontier
Keyword(s):  
Co2 Laser ◽  
Large Scale ◽  
Laser Energy ◽  
Reduction Reaction ◽  
Laser Pyrolysis ◽  
Highly Active ◽  
One Step ◽  
Orr Activity ◽  
Set Up ◽  
The One

Recently, we reported the use of CO2 laser pyrolysis for the synthesis of promising Fe/C/N electrocatalysts for Oxygen Reduction Reaction (ORR) in fuel cells. The set-up used single laser pyrolysis of an aerosolized solution of iron acetylacetonate in toluene with ammonia, both as laser energy transfer agent and nitrogen source. In the present paper, we investigate the effect of a second ammonia promoted CO2 laser pyrolysis on the feature and ORR activity of Fe/C/N electrocatalysts. Indeed, compared to single pyrolysis, the second ammonia promoted CO2 laser pyrolysis could be an interesting way to synthesize in one-step performing ORR electrocatalysts on a large scale. For this comparison, a two-stage reactor was built, allowing both single ammonia-induced CO2 laser pyrolysis as reported previously or double ammonia-induced CO2 laser pyrolysis. In the latter configuration, the catalyst nanopowder flow is formed at the first stage of the reactor, then mixed with a second ammonia flow and allowed to cross a second CO2 laser beam, thus undergoing a second ammonia-induced CO2 laser pyrolysis before being collected on filters. It is found that the second ammonia-induced CO2 laser pyrolysis significantly improves the ORR performances of the materials prepared by single CO2 laser pyrolysis. The effect is demonstrated for three different catalysts for which the onset potentials for the ORR from single-stage to double-stage configuration increase from 625 mV to 845 mV, 790 mV to 860 mV, and 800 mV to 885 mV, respectively. The selectivity of the ORR was determined at 600 mV/SHE and lie between 3.41 and 3.72. These promising performances suggesting potentialities for the one-step formation of highly active Fe/C/N ORR electrocatalysts are discussed, based on results of surface analysis by XPS, specific surface area measurements, and Raman spectroscopy.

scholarly journals The transparaspinal approach: A novel technique for one-step removal of dumb-bell-shaped spinal tumors

2011 ◽  
Vol 2 (2) ◽  
pp. 96 ◽  
Author(s):  
DeepakKumar Singh ◽  
Neha Singh ◽  
Manu Rastogi ◽  
Mazhar Husain
Keyword(s):  
Spinal Tumors ◽  
Novel Technique ◽  
One Step

High Density Bulk Shape Rapid Consolidation of the Yba2Cu307-X Superconductor

1989 ◽  
Vol 169 ◽  
Author(s):  
S. V. Rele ◽  
R. V. Raman ◽  
H. S. Meeks ◽  
R. L. Anderson ◽  
R. N. Shelton ◽  
...  
Keyword(s):  
Volume Fraction ◽  
X Ray Diffraction ◽  
X Ray ◽  
Superconducting Volume Fraction ◽  
One Step ◽  
Hollow Cylinders ◽  
Diffraction Patterns ◽  
Set Up ◽  
Cylinders And Spheres ◽  
High Processing

AbstractA novel rapid densification technique for fabrication of bulk shape YBa2Cu307–xsuperconductor is presented. The Ceracon process is a one‐step, quasi‐isostatic consolidation route utilizing conventional P/M equipment and set‐up. The Ceracon technology has enabled successful fabrication of bulk, shapes such as discs, cylinders, hollow cylinders and spheres along with significant increases in the density up to 95‐98% of the theorertical. The superconducting volume fraction is preserved due to short hold times at the operating temperatures and avoidance of high processing temperatures. Results based on densities, microstructure, susceptibility measurements, X‐ray diffraction patterns and TGA measurements are discussed.

scholarly journals Evaluation of bond strength of one step and two steps self-etch adhesive agents with two different pulp-capping materials

2020 ◽  
Vol 67 (2) ◽  
pp. 75-82
Author(s):  
Vasilka Rendzova ◽  
Sonja Apostolska ◽  
Emilija Kostadinovska ◽  
Maja Antanasova ◽  
Marina Eftimoska ◽  
...  
Keyword(s):  
Bond Strength ◽  
Calcium Silicate ◽  
Testing Machine ◽  
Pulp Capping ◽  
Dentin Adhesives ◽  
Significant Difference ◽  
One Step ◽  
Calcium Silicate Cements ◽  
Set Up ◽  
Self Etch

Primary purpose of restorative dentistry is to preserve pulp vitality. Besides calcium hydroxide, the application of calcium silicate cements as a material for direct pulp capping has become used recently. The aim of our study was to investigate the influence of materials for direct and indirect pulp capping on the bond strength of composite restorations using two different self etch dentin adhesives. The test was performed on 60 intact molars extracted for periodontal or orthodontic reasons. The prepared samples were divided into the two groups and three subgroups depending on the adhesive and pulp cupping material. Two different calcium silicate based materials were used for pulp cupping. One step and two steps self etch dentin adhesive was applied to prepared specimens depending on the group and with the help of a specially made metal mold set up a composite post. The share bond strength was assessed using a universal testing machine. The results showed significant difference in the share bond strength between the samples treated with TheraCal LC and Biodentine with TheraCal LC being superior to Biodentine.

scholarly journals Restructuring companies under crisis. A real case study

2017 ◽  
Vol 17 (3) ◽  
pp. 141-147
Author(s):  
Hezi Aviram SHAYB
Keyword(s):  
Business Organization ◽  
Important Conclusion ◽  
Success Stories ◽  
Key Points ◽  
The World ◽  
One Step ◽  
Set Up ◽  
The Right ◽  
A Company

Nobody is planning to fail, but many companies are failing because of lack of planning.Real business experience showed during the years that crisis can be prevented, avoided or limited. If detected in time, the risks associated with the crisis can be mitigated and the effects can be diminished, with the condition that the actions required are done fast, in a sharp and accurate manner.            When it comes, a crisis brings intense level of pressure and under these conditions there is no time or room for mistakes. Delays, losing focus and lack of planning will bring a company one step away from failure.             The right way to deal with crisis, if required measures are not done in time, is to minimize the losses and reposition in the best way possible.            Analyzing the success stories of some of the biggest and strongest companies in the world, led to an important conclusion: the majority of these companies were in the situation to face huge crises that threatened their ability to survive in certain moments on their way to success.            With the right planning and by setting a proper organizational structure, the negative aspects of the crisis can be turned into benefits and opportunities for the company.            The most critical challenge for management is to assess the level of exposure to risk of the company and identify the key points to focus on in order to overcome the crisis and create value.             In order to set up a strong plan in dealing with crisis, a business organization needs reliable, efficient and effective tools and this is what this article is all about. 

scholarly journals The Paradox between Consumerism and Sustainability - How to approach the marketing professionals with this theme

2013 ◽  
Vol 4 (2) ◽  
pp. 29
Author(s):  
Afonso Carlos Braga
Keyword(s):  
Point Of View ◽  
Growth Strategies ◽  
Sustainable Resources ◽  
Present Rate ◽  
One Step ◽  
Research Questions ◽  
Set Up ◽  
Develop Market ◽  
Near Future

Much has been said these days about the World’s limited capacity to provide sustainable resources vis a vis the growing population's demand for goods and supplies in a planet of finite resources. According to the Living Planet Report, produced by the NGO World Wildlife Fund (WWF): “At humanity's present rate of consumption, by 2030 we'll need the resources of two Earths just to survive long-term. There are really two options: start building another Earth, or drastically change our lifestyles. Which one is supposed to be easier?”[1]The present article addresses this issue from the point of view of the marketing executives of big companies, responsible to lead the communication and growth strategies of those companies, often encouraging 'consumerism' to meet the profit and revenue growths. The idea was to understand if this topic is relevant to these professionals,hence their companies, and raise some hypotheses of how to approach this problem in order to provoke those companies to practice "conscious marketing". Going one step further, does the type of organizational paradigm in which the executive company acts should influence the way to approach this professional when conducting personal interviews to collect data? An initial analysis on the theory of how to develop market research questions to avoid bias and/or induced responses, will lead to the article conclusion of how to set up a questionnaire that will be taken into consideration in a near future, at the masters’ thesis of the author.[1] Source:http://io9.com/5664078/humanity-will-need-two-earths-to-sustain-itself-in-just-twenty-years, access 02 dec 12

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