scholarly journals Localization of membrane-associated calcium in unpollinated and pollinated pistil of Petunia hybrida Hort.

2014 ◽  
Vol 64 (1) ◽  
pp. 19-24 ◽  
Author(s):  
Elżbieta Bednarska
Keyword(s):  
Petunia Hybrida ◽  
Pollen Tubes ◽  
Polar Regions ◽  
Cell Degeneration ◽  
Transmitting Tract ◽  
High Level ◽  
Selection Of

In the pistil of <em>Petunia hybrida</em>, the transmitting tract and the ovules are the sites which give Ca<sup>2+</sup>-CTC fluorescence. In unpollinated pistil the level of membrane-associated Ca<sup>2+</sup> decreases from the stigma to the base of the style. The renewed strong rise of Ca<sup>2+</sup>-CTC fluorescence appears on the placenta surface and in the ovule integuments. Following pollination, when the pollen tubes have grown through the pistil, the pattern of membrane-associated Ca<sup>2+</sup> on the path stigma - ovary is reversed. The highest fluorescence is found in the base of the style. In pollinated ovules the Ca<sup>2+</sup>-CTC fluorescence increases markedly. In the transmitting cells membrane-associated Ca<sup>2+</sup> occurs mainly in the polar regions of the cell. During cell degeneration following pollination the cytoplasmic clusters show Ca<sup>2+</sup>-CTC fluorescence. The used <em>P. hybrida</em> cultivar is self-fertile. The selection of pollen tubes occurs mainly in the upper part of the style. The rejected pollen tubes show a steady high level of membrane-associated calcium.

SBA MCQs for the MRCS Part A

2012 ◽  
Author(s):  
Sri G. Thrumurthy ◽  
Tania Samantha De Silva ◽  
Zia Moinuddin ◽  
Stuart Enoch
Keyword(s):  
Clinical Case ◽  
Multiple Choice ◽  
Surgical Anatomy ◽  
Surgical Patients ◽  
Multiple Choice Questions ◽  
Basic Sciences ◽  
Self Assessment ◽  
High Level ◽  
Factual Recall ◽  
Selection Of

Specifically designed to help candidates revise for the MRCS exam, this book features 350 Single Best Answer multiple choice questions, covering the whole syllabus. Containing everything candidates need to pass the MRCS Part A SBA section of the exam, it focuses intensively on the application of basic sciences (applied surgical anatomy, physiology, and pathology) to the management of surgical patients. The high level of detail included within the questions and their explanations allows effective self-assessment of knowledge and quick identification of key areas requiring further attention. Varying approaches to Single Best Answer multiple choice questions are used, giving effective exam practice and guidance through revision and exam technique. This includes clinical case questions, 'positively-worded' questions, requiring selection of the most appropriate of relatively correct answers; 'two-step' or 'double-jump' questions, requiring several cognitive steps to arrive at the correct answer; as well as 'factual recall' questions, prompting basic recall of facts.

scholarly journals Photodynamic Therapy Combined with Antibiotics or Antifungals against Microorganisms That Cause Skin and Soft Tissue Infections: A Planktonic and Biofilm Approach to Overcome Resistances

2021 ◽  
Vol 14 (7) ◽  
pp. 603
Author(s):  
Vanesa Pérez-Laguna ◽  
Isabel García-Luque ◽  
Sofía Ballesta ◽  
Antonio Rezusta ◽  
Yolanda Gilaberte
Keyword(s):  
Photodynamic Therapy ◽  
Soft Tissues ◽  
Combined Treatment ◽  
Resistance Pattern ◽  
Antimicrobial Photodynamic Therapy ◽  
Antimicrobial Drugs ◽  
Bacteria And Fungi ◽  
High Level ◽  
Selection Of

The present review covers combination approaches of antimicrobial photodynamic therapy (aPDT) plus antibiotics or antifungals to attack bacteria and fungi in vitro (both planktonic and biofilm forms) focused on those microorganisms that cause infections in skin and soft tissues. The combination can prevent failure in the fight against these microorganisms: antimicrobial drugs can increase the susceptibility of microorganisms to aPDT and prevent the possibility of regrowth of those that were not inactivated during the irradiation; meanwhile, aPDT is effective regardless of the resistance pattern of the strain and their use does not contribute to the selection of antimicrobial resistance. Additive or synergistic antimicrobial effects in vitro are evaluated and the best combinations are presented. The use of combined treatment of aPDT with antimicrobials could help overcome the difficulty of fighting high level of resistance microorganisms and, as it is a multi-target approach, it could make the selection of resistant microorganisms more difficult.

scholarly journals Ice processes and growth history on Arctic and sub-Arctic lakes using ERS-1 SAR data

Polar Record ◽  
1995 ◽  
Vol 31 (177) ◽  
pp. 115-128 ◽  
Author(s):  
K. Morris ◽  
M. O. Jeffries ◽  
W. F. Weeks
Keyword(s):  
Arctic Lakes ◽  
Polar Regions ◽  
Lake Ice ◽  
Sar Images ◽  
The North ◽  
Growth History ◽  
North Slope Of Alaska ◽  
Term Monitoring ◽  
Selection Of

AbstractA survey of ice growth and decay processes on a selection of shallow and deep sub-Arctic and Arctic lakes was conducted using radiometrically calibrated ERS-1 SAR images. Time series of radar backscatter data were compiled for selected sites on the lakes during the period of ice cover (September to June) for the years 1991–92 and 1992–93. A variety of lake-ice processes could be observed, and significant changes in backscatter occurred from the time of initial ice formation in autumn until the onset of the spring thaw. Backscatter also varied according to the location and depth of the lakes. The spatial and temporal changes in backscatter were most constant and predictable at the shallow lakes on the North Slope of Alaska. As a consequence, they represent the most promising sites for long-term monitoring and the detection of changes related to global warming and its effects on the polar regions.

GIS Based Multi-Criteria decision support system and machine learning for Hospital Site Selection case study Oran - Algeria

2022 ◽  
Vol 14 (1) ◽  
pp. 0-0
Keyword(s):  
Site Selection ◽  
Decision Makers ◽  
Analysis Method ◽  
Automatic Learning ◽  
Hospital Site ◽  
Set Up ◽  
High Level ◽  
Selection Of ◽  
The Ideal

The selection of hospital sites is one of the most important choice a decision maker has to take so as to resist the pandemic. The decision may considerably affect the outbreak transmission in terms of efficiency , budget, etc. The main targeted objective of this study is to find the ideal location where to set up a hospital in the willaya of Oran Alg. For this reason, we have used a geographic information system coupled to the multi-criteria analysis method AHP in order to evaluate diverse criteria of physiological positioning , environmental and economical. Another objective of this study is to evaluate the advanced techniques of the automatic learning . the method of the random forest (RF) for the patterning of the hospital site selection in the willaya of Oran. The result of our study may be useful to decision makers to know the suitability of the sites as it provides a high level of confidence and consequently accelerate the power to control the COVID19 pandemic.

scholarly journals Corrosion of carbon steel components in the French high-level waste programme: evolution of disposal concept and selection of materials

2017 ◽  
Vol 52 (sup1) ◽  
pp. 17-24 ◽  
Author(s):  
Didier Crusset ◽  
Valérie Deydier ◽  
Sophia Necib ◽  
Jean-Marie Gras ◽  
Pierre Combrade ◽  
...  
Keyword(s):  
Carbon Steel ◽  
High Level Waste ◽  
High Level ◽  
Selection Of

scholarly journals FEATURES OF ADVENTURE TOURISM AND PROSPECTS FOR ITS DEVELOPMENT IN RUSSIA

2017 ◽  
Vol 11 (3) ◽  
pp. 51-58
Author(s):  
Татьяна Никонова ◽  
Tatyana Nikonova ◽  
Валерия ГУСАРОВА ◽  
Valeriya GUSAROVA ◽  
Ольга Пережогина ◽  
...  
Keyword(s):  
Healthy Lifestyle ◽  
Transport Infrastructure ◽  
Extreme Sports ◽  
Professional Background ◽  
Adventure Tourism ◽  
Tourist Infrastructure ◽  
High Level ◽  
Negative Factors ◽  
Selection Of

In the last few years, the development of adventure tourism as a kind of active tourism initiatives, tourism firms have become more visible. Adventuretourism (adventure tourism) is different in originality and unusual variety of tours. It includes exotic travel, extreme sports, a specific move connected with risk and danger to life. In this regard, the article highlights the criterion of the differences of adventure tourism from other types of active travel. The authors point out the the main reasons for the popularity of adventure tourism of the article, among which are following: healthy lifestyle popularization, prestige of the activity of the pleasure, the desire of the modern tourist for new experiences and the rush of emotion, the possibility of self-realization, improving credibility and promotion in society through adventure tourism, including with help of social networks. Taking into account the growing popularity of adventure tourism in the world, the authors of the article analyzes the factors of Russia’s competitiveness for the adventure tourism development. It is revealed that strengths are rail transport infrastructure and a high level of health and hygiene. The article admits that now the development of adventure tourism in Russia is constrained by a number of negative factors to be overcome. Among them are the lack of a comprehensive look at the geography of Russia from the standpoint of the selection of adventure territories, the unsatisfactory level of tourist infrastructure of adventure, poor range and low quality of ser- vices adventure tourism, weak professional background of the staff.

scholarly journals INTERNAL PR AS PART OF CORPORATE CULTURE

2019 ◽  
pp. 22-26
Author(s):  
O. Goryacheva
Keyword(s):  
Public Relations ◽  
Beneficial Effect ◽  
Corporate Culture ◽  
Employee Satisfaction ◽  
Labor Process ◽  
High Level ◽  
Selection Of ◽  
Culture Monitoring

The identification of mechanisms for the implementation of public relations and the selection of effective internal PR tools can affect the organization’s management. The main objective of internal PR is to stabilize the workforce and increase employee satisfaction. The possibilities of internal PR in the formation and maintenance of corporate culture have been investigated in the article. The indicators of labor assessment presented not only help determine the level of professionalism of the employee, but also demonstrate his personalized labor achievements to the whole team. The motivation of the participants of the labor process to the awareness of the importance of the implementation of the collective tasks has a beneficial effect on the formation of corporate culture. Monitoring of events and internal PR tools will allow you to adjust the formation of corporate culture and provide a high level of management at the enterprise.

scholarly journals Selection of efficient ships according to the criterion of marginal price at the feasibility study

2021 ◽  
pp. 172-181
Author(s):  
Oksana Y. Vasileva ◽  
Marina V. Nikulina Nikulina ◽  
Juri I. Platov Platov
Keyword(s):  
Fuel Consumption ◽  
Feasibility Study ◽  
Information Technologies ◽  
Optimization Methods ◽  
Relevant Information ◽  
Operating Conditions ◽  
Initial Stage ◽  
Level Of Use ◽  
High Level ◽  
Selection Of

The article deals with the problem of selecting efficient ships by the feasibility study in which brake power, main dimensions, payload, speed and fuel consumption are determined. The necessity of using the proposed selection at the initial stage of the ship's design is justified; the problems that arise at the present time are denoted. The purpose of the article is to propose a criterion for the selection of efficient vessels, "tied" to the operating conditions, based on the marginal cost of the ship. A method for its determination is presented. At the same time, annual revenues and operating costs should be determined by modern methods of business planning for the operation of the fleet. When searching for the parameters of the ship, the optimal fuel consumption is determined. The rest of the costs can be found according to the coefficients "tied" to the fuel consumption and calculated on the basis of existing prototypes. The results of calculations by the proposed method are shown; its merits and opportunities for improvement are noted with the availability of relevant information. The conclusion is made about the convenience and applicability of the proposed option for selecting efficient ship for the feasibility study based on optimization methods for determining the parameters of vessels under conditions of a high level of use of information technologies.

scholarly journals Application properties of methods for fault detection and isolation in the diagnosis of complex large-scale processes

2014 ◽  
Vol 62 (3) ◽  
pp. 571-582 ◽  
Author(s):  
J.M. Kościelny ◽  
M. Syfert
Keyword(s):  
Fault Detection ◽  
Large Scale ◽  
Fault Detection And Isolation ◽  
Industrial Processes ◽  
Industrial Practice ◽  
Potential Applicability ◽  
Diagnostic Approaches ◽  
Level Of Knowledge ◽  
High Level ◽  
Selection Of

Abstract The survey presents a selection of the methods of the fault detection and isolation suitable to be useful for the diagnostics of the complex, large scale industrial processes. The paper focuses on these methods that have appropriately high level of potential applicability in industrial practice. The novelty of the paper relies on the discussion of the dependency of the level of knowledge about diagnosed process and recommended diagnostic approaches. Appropriate recommendations were given in the convenient form of the table

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