Biofilm testing of microbiota: An essential step during corneal scrap examination in Egyptian acanthamoebic keratitis cases

2018 ◽  
Vol 67 (5) ◽  
pp. 556-564
Author(s):  
Marwa A. Hasby Saad ◽  
Haidy S.M. Khalil
Keyword(s):  
Essential Step ◽  
Acanthamoebic Keratitis

Multislice calculations for quasi-periodic and non-periodic objects

1990 ◽  
Vol 48 (4) ◽  
pp. 138-139
Author(s):  
R. Herrera ◽  
A. Gómez
Keyword(s):  
Electron Diffraction ◽  
Computer Simulations ◽  
Periodic Table ◽  
Amorphous Materials ◽  
Space Group ◽  
Essential Step ◽  
Shape Effects ◽  
Atomic Scattering ◽  
Diffraction Patterns ◽  
Periodic Continuation

Computer simulations of electron diffraction patterns and images are an essential step in the process of structure and/or defect elucidation. So far most programs are designed to deal specifically with crystals, requiring frequently the space group as imput parameter. In such programs the deviations from perfect periodicity are dealt with by means of “periodic continuation”.However, for many applications involving amorphous materials, quasiperiodic materials or simply crystals with defects (including finite shape effects) it is convenient to have an algorithm capable of handling non-periodicity. Our program “HeGo” is an implementation of the well known multislice equations in which no periodicity assumption is made whatsoever. The salient features of our implementation are: 1) We made Gaussian fits to the atomic scattering factors for electrons covering the whole periodic table and the ranges [0-2]Å−1 and [2-6]Å−1.

APROXIMACIÓN A UNA CONCEPCIÓN TEÓRICO-METODOLÓGICA DE LOS PROCESOS DE PROFESIONALIZACIÓN PEDAGÓGICA EN LA EDUCACIÓN SUPERIOR.

2013 ◽  
Vol 1 (3) ◽  
Author(s):  
Olga Gloria Barbón Pérez ◽  
Julia Añorga Morales
Keyword(s):  
Higher Education ◽  
Key Words ◽  
Educación Superior ◽  
Comprehensive Understanding ◽  
Educacion Superior ◽  
Essential Step ◽  
Palabras Clave ◽  
Theoretical Conception ◽  
Design And Practice ◽  
Conscious Activity

El esclarecimiento de algunas de las concepciones que constituyen la base de los procesos de profesionalización pedagógica es un paso esencial para el éxito de los mismos. El presente artículo tiene como propósito aunar reflexiones que posibiliten un acercamiento hacia una concepción teórico-metodológica de los procesos de profesionalización pedagógica en la Educación Superior.El diseño y la puesta en práctica de los procesos de profesionalización pedagógica en la Educación Superior no pueden ser improvisados. Exigen, como actividad consciente, la consideración de determinados presupuestos teóricos y metodológicos que lo sustenten, y de su consideración como proceso pedagógico especial. Palabras clave: concepción teórica, concepción metodológica, profesionalización pedagógica.   ABSTRACT   Gaining on clarity concerning some of the conceptions that lie under the pedagogical professionalization processes is an essential step towards their own success. The article focuses on gathering insights that help get a more comprehensive understanding of a theoretic-methodological conception of the pedagogical professionalization processes in higher education. Both design and practice of these processes can not be improvised. They demand, as any other conscious activity, to take into account theoretical and methodological grounds and their consideration as a especial pedagogical process.   Key words: theoretical conception, methodological grounds, pedagogical professionalization.   Clarifying some of the concepts that form the basis of the processes of pedagogical professionalization is an essential step for their success.  This paper aims to join some reflections that enable the approaching to a theoretical-methodological conception of the processes of pedagogical professionalization in Higher Education.  Designing and implementing the processes of pedagogical professionalization cannot be improvised.  They demand, as a conscious activity, the consideration of certain supporting assumptions in theory and method, and their consideration as a special pedagogical process.   Keywords: theoretical conception, methodological conception, pedagogical professionalization. Recibido: Julio 2013 Aprobado: Agosto 2013

Gestagens in assisted reproductive technology programs

GYNECOLOGY ◽  
2019 ◽  
Vol 21 (2) ◽  
pp. 76-79
Author(s):  
Anastasia G Syrkasheva ◽  
Yana A Petrosyan ◽  
Natalia V Dolgushina
Keyword(s):  
Assisted Reproductive Technology ◽  
Luteal Phase ◽  
Ovarian Hyperstimulation Syndrome ◽  
Infertility Treatment ◽  
Reproductive Technology ◽  
Art Programs ◽  
Drug Effectiveness ◽  
Essential Step ◽  
Endogenous Steroid ◽  
Endogenous Steroid Hormones

Background. Luteal phase (LP) drug support is an important step in assisted reproductive technology (ART) programs efficacy. Aim. To present up-to-date data on an efficacy of LP hormonal support during ART cycles as well as to conduct a comparative analysis of various gestagen drug effectiveness. Materials and methods. To write this review domestic and foreign publications were searched in Russian and international search systems (PubMed, eLibrary, etc.) for the last 8 years. The review includs articles from peer-reviewed literature. Results. LP drug support becomes an essential step in infertility treatment in various ART programs. Although human chorionic gonadotropin drug injections in the posttransfer period leads to an activation of endogenous steroid hormones synthesis, exogenous hormones use is currently preferred because of not having a risk of ovarian hyperstimulation syndrome. Conclusions. The variety of progesterone drugs is accompanied by a lack of algorithms for their use in various clinical situations. Further studies are required to evaluate progesterone drugs efficacy for various subgroups of patients.

Precision Xe Plasma FIB Delayering for Physical Failure Analysis of Sub-20 nm Microprocessor Devices

2017 ◽  
Author(s):  
D. Zudhistira ◽  
V. Viswanathan ◽  
V. Narang ◽  
J.M. Chin ◽  
S. Sharang ◽  
...  
Keyword(s):  
Failure Analysis ◽  
Dielectric Films ◽  
Planar Surface ◽  
Chemical Methods ◽  
Root Cause ◽  
Essential Step ◽  
Dielectric Layers ◽  
Wet Chemical ◽  
20 Nm ◽  
Low K

Abstract Deprocessing is an essential step in the physical failure analysis of ICs. Typically, this is accomplished by techniques such as wet chemical methods, RIE, and mechanical manual polishing. Manual polishing suffers from highly non-uniform delayering particularly for sub 20nm technologies due to aggressive back-end-of-line scaling and porous ultra low-k dielectric films. Recently gas assisted Xe plasma FIB has demonstrated uniform delayering of the metal and dielectric layers, achieving a planar surface of heterogeneous materials. In this paper, the successful application of this technique to delayer sub-20 nm microprocessor chips with real defects to root cause the failure is presented.

Bridging the Team Communication Gap, an Essential Step in the Medical Organizational Cultures

2019 ◽  
Vol 2 (1) ◽  
pp. 79-85
Author(s):  
Andreea Alexandra Hleșcu ◽  
◽  
Bianca Hanganu ◽  
Irina Smaranda Manoilescu ◽  
Andreea Elena Bîrlescu ◽  
...  
Keyword(s):  
Organizational Cultures ◽  
Team Communication ◽  
Essential Step ◽  
Communication Gap

Investigations on the filtration of natural aquatic suspensions supported by dosing small amounts of Fe(III)-salts (βFe ≤ 0.1 mg.L-1): mode of action and basic design criteria

2002 ◽  
Vol 2 (2) ◽  
pp. 91-98
Author(s):  
R. Winzenbacher ◽  
R. Schick ◽  
H.-H. Stabel ◽  
M. Jekel
Keyword(s):  
Large Scale ◽  
Suspended Solids ◽  
Iron Hydroxides ◽  
Essential Step ◽  
Iron Salts ◽  
Alkaline Earths ◽  
Co Precipitation ◽  
Solid Liquid ◽  
Solid Liquid Separation

Improved removal of particles during the treatment of natural aquatic suspensions has been achieved by pre-ozonation and the addition of small quantities of iron salts (βFe ≤ 0.1 mg.L-1; “Fe(III)-assisted filtration”) followed by rapid filtration. As shown by investigations on a large-scale installation at Lake Constance Water Supply, this procedure reliably reduces suspended solids by at least 2-3 powers of ten in long-term use. However, the high efficacy of Fe(III)-assisted filtration cannot be explained on the basis of known coagulation mechanisms (like adsorption-charge neutralization, co-precipitation). Instead, the essential step was found to be the conditioning of the filter medium by coating it with colloids containing Fe(OH)3, and this “Fe coating” process occurs only in the presence of alkaline earths (especially Ca2+). According to further experiments, the enhanced solid-liquid separation was ultimately traced to chemical interactions such as the formation of calcium-organic association structures between the iron hydroxides and other solids. For design of Fe(III)-assisted filtration steps, finally, a βCa/DOC ratio above 40 mg.mg-1 and pre-oxidation with ozone dosages not exceeding 2 mg O3/mg DOC was recommended.

scholarly journals A Cryptography-Powered Infrastructure to Ensure the Integrity of Robot Workflows

2021 ◽  
Vol 1 (1) ◽  
pp. 93-118
Author(s):  
Benjamin Breiling ◽  
Bernhard Dieber ◽  
Martin Pinzger ◽  
Stefan Rass
Keyword(s):  
Real World ◽  
Digital Signature ◽  
Mobile Manipulator ◽  
Separate Entity ◽  
Application Development ◽  
Development Environment ◽  
Essential Step ◽  
Distributed Ledger ◽  
Compliant Robot ◽  
Distributed Infrastructure

With the growing popularity of robots, the development of robot applications is subject to an ever increasing number of additional requirements from e.g., safety, legal and ethical sides. The certification of an application for compliance to such requirements is an essential step in the development of a robot program. However, at this point in time it must be ensured that the integrity of this program is preserved meaning that no intentional or unintentional modifications happen to the program until the robot executes it. Based on the abstraction of robot programs as workflows we present in this work a cryptography-powered distributed infrastructure for the preservation of robot workflows. A client composes a robot program and once it is accepted a separate entity provides a digital signature for the workflow and its parameters which can be verified by the robot before executing it. We demonstrate a real-world implementation of this infrastructure using a mobile manipulator and its software stack. We also provide an outlook on the integration of this work into our larger undertaking to provide a distributed ledger-based compliant robot application development environment.

scholarly journals Research of the Disparities in the Process of Revitalization of Brownfields in Small Towns and Cities

2021 ◽  
Vol 13 (3) ◽  
pp. 1232
Author(s):  
Natalie Szeligova ◽  
Marek Teichmann ◽  
Frantisek Kuda
Keyword(s):  
Small Towns ◽  
The Czech Republic ◽  
Essential Step ◽  
Community Strength ◽  
Population Turnover ◽  
Subsequent Application ◽  
Level Of Knowledge ◽  
The Subject ◽  
Relevant Factors

The subject of the work is the research on relevant factors influencing participation in the success of brownfield revitalization, especially in the territory of small municipalities. Research has so far dealt with the issue of determining disparities in the municipalities of the Czech Republic, not excluding small municipalities, but their subsequent application has usually been presented in larger cities. The focus on smaller municipalities or cities was usually addressed only in general. The introduction provides an overview of theoretical knowledge in the field of brownfield revitalization. Defining the level of knowledge of the monitored issues is an essential step for the purposes of more effective determination of disparities. Disparities will be determined on the basis of information on localities that have been successfully revitalized. The identified disparities are then monitored in the territory of small municipalities. For the purposes of processing, it was determined that a small municipality or city is an area with a maximum of 5000 inhabitants. Using appropriately selected statistical methods, an overview of disparities and their weights is determined, which significantly affect the success of revitalization. In small municipalities, the issue of brownfields is not emphasized but, in terms of maintaining community strength and reducing population turnover, the reuse of brownfields is a crucial theme.

Effects of vacuum soaking on the hydration, steaming, and physiochemical properties of japonica rice

2021 ◽  
Vol 85 (3) ◽  
pp. 634-642
Author(s):  
Qiuyun Li ◽  
Sen Li ◽  
Xiao Guan ◽  
Kai Huang ◽  
Fengbo Zhu
Keyword(s):  
Porous Structure ◽  
Water Absorption ◽  
Microstructure Analysis ◽  
Japonica Rice ◽  
Starch Granules ◽  
Gelatinization Temperature ◽  
Relative Crystallinity ◽  
Physiochemical Properties ◽  
Essential Step ◽  
Density Of Water

ABSTRACT Soaking is an essential step in the processing of various rice products. In this study, the influences of vacuum soaking on hydration, steaming, and physiochemical properties of rice were investigated. Results showed that vacuum soaking accelerated water absorption as well as affected the mobility and density of water protons inside rice during soaking. Vacuum soaking could considerably shorten the optimal steaming time from 58 to 32 min and reduce the adhesiveness of steamed rice. Microstructure analysis of rice revealed that porous structure was formed on rice surface and the arrangement of starch granules became loosened after vacuum soaking. Moreover, vacuum soaking slightly reduced the relative crystallinity of rice starches without altering the crystalline type. The gelatinization temperature as well as the peak and trough viscosity was also decreased after vacuum soaking. Our study suggested that vacuum soaking was conducive to improve the soaking and steaming properties of rice.

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