scholarly journals Photocatalytic Membranes in Photocatalytic Membrane Reactors

Processes ◽  
2018 ◽  
Vol 6 (9) ◽  
pp. 162 ◽  
Author(s):  
Pietro Argurio ◽  
Enrica Fontananova ◽  
Raffaele Molinari ◽  
Enrico Drioli
Keyword(s):  
Large Scale ◽  
Advanced Oxidation Processes ◽  
Multidisciplinary Approach ◽  
Polymeric Membranes ◽  
Sustainable Growth ◽  
Membrane Reactors ◽  
Factors Affecting ◽  
Main Factors ◽  
Critical Overview

The present work gives a critical overview of the recent progresses and new perspectives in the field of photocatalytic membranes (PMs) in photocatalytic membrane reactors (PMRs), thus highlighting the main advantages and the still existing limitations for large scale applications in the perspective of a sustainable growth. The classification of the PMRs is mainly based on the location of the photocatalyst with respect to the membranes and distinguished in: (i) PMRs with photocatalyst solubilized or suspended in solution and (ii) PMRs with photocatalyst immobilized in/on a membrane (i.e., a PM). The main factors affecting the two types of PMRs are deeply discussed. A multidisciplinary approach for the progress of research in PMs and PMRs is presented starting from selected case studies. A special attention is dedicated to PMRs employing dispersed TiO2 confined in the reactor by a membrane for wastewater treatment. Moreover, the design and development of efficient photocatalytic membranes by the heterogenization of polyoxometalates in/on polymeric membranes is discussed for applications in environmental friendly advanced oxidation processes and fine chemical synthesis.

FACTORS AND RESERVES FOR INCREASED EXPORTS OF WHEAT AND WHEAT PRODUCTS PROCESSING FROM THE RUSSIAN FEDERATION

2020 ◽  
Vol 13 (1) ◽  
pp. 160-169
Author(s):  
M.D. Magomedov ◽  
◽  
V.V. Stroyev ◽  
O.V. Karabanova ◽  
I.E. Domarev ◽  
...  
Keyword(s):  
Russian Federation ◽  
Factors Affecting ◽  
Wheat Products ◽  
The Russian Federation ◽  
Main Factors

The article proposes a classification of the main factors affecting the increase in wheat exports and processing products from the Russian Federation. They are grouped into external and internal. Each factor is disclosed in detail. Reserves are considered and recommendations on their use are given.

Mechanism Research about Impact of Large-Scale Wind Power Integration on Grid Loss

2014 ◽  
Vol 1070-1072 ◽  
pp. 200-203
Author(s):  
Ze Tian Wei ◽  
Wen Ying Liu ◽  
Fu Chao Liu ◽  
Jian Zong Zhuo
Keyword(s):  
Wind Power ◽  
Transmission Lines ◽  
Power Flow ◽  
Large Scale ◽  
Wind Farms ◽  
Active Power ◽  
Equivalent Model ◽  
Factors Affecting ◽  
Main Factors ◽  
Grid Loss

This paper firstly analyzes the mechanism of transmission line and transformer loss and illustrates the equivalent model and calculating method. Then creates a simple three-node model and discusses the main factors which affect the grid loss with adequate formula. At last, we draw a concise conclusion that there are several factors affecting grid loss. The main factors are the location of wind power access, the active power flow of transmission lines, the active power output of wind farms and the voltage level of wind power access.

scholarly journals DIGITALIZATION OF THE INSURANCE MARKET AS A FACTOR IN INCREASING ITS COMPETITIVENESS

2021 ◽  
pp. 69-77
Author(s):  
D. A. Pankov ◽  
Yu. V. Krupenko
Keyword(s):  
Digital Transformation ◽  
Stress Factors ◽  
Insurance Market ◽  
Insurance Company ◽  
Competitive Advantages ◽  
Factors Affecting ◽  
National Insurance ◽  
Main Factors ◽  
Definition Of

Approaches to the definition of «competitiveness» are systematized. The problems of the national insurance market and the main directions of its sustainable development in the conditions of digital transformation of the economy are identified. Factors affecting the competitiveness of an insurance company are identified. The author offers a classification of factors of insurers' competitiveness, including the main factors (reliability factors), support factors and stress factors. Digitalization is defined as the most important factor in the competitiveness of the insurance market in the digital economy. Competitive advantages of insurers based on digitalization are justified. Business imperatives of insurers in the conditions of digitalization are revealed. The recommendations can become a powerful driver for increasing the competitiveness of the insurance market.

CO2 Conversion by Membrane Reactors

2019 ◽  
Vol 19 (6) ◽  
pp. 3124-3134
Author(s):  
Adele Brunetti ◽  
Enrica Fontananova
Keyword(s):  
High Temperature ◽  
Membrane Reactor ◽  
Large Scale ◽  
Dry Reforming ◽  
Membrane Reactors ◽  
Dry Reforming Of Methane ◽  
Co2 Conversion ◽  
Promising Tool ◽  
Photocatalytic Reactors ◽  
Critical Overview

Membrane reactors technology represents a promising tool for the CO2 capture and reuse by conversion to valuable products. After a preliminary presentation of the fundamentals of this technology, a critical overview of the last achievements and new perspectives in the CO2 conversion by membrane reactors is given, highlighting the still existing limitations for large scale applications. Among the low temperature (≤100 °C) membrane reactor for CO2 conversion, electrochemical membrane reactors and photocatalytic reactors, represent the two mainly pursued systems and they were discussed starting from selected case studies. Dry reforming of methane and CO2 hydrogenation to methanol were selected as interesting examples of high temperature (>100 °C) membrane based conversion of CO2 to energy bearing products.

scholarly journals Determination of factors affecting investment privalovs land cities

2021 ◽  
pp. 218-224
Author(s):  
Olena Slavinska ◽  
◽  
Yuliya Radzinska ◽  
Keyword(s):  
Land Use ◽  
Urban Areas ◽  
Methodological Approach ◽  
Key Factors ◽  
Factors Affecting ◽  
Stakeholder Groups ◽  
Main Factors ◽  
Definition Of

The aim of the article is identification of main factors influencing investment attractiveness of land in the cities of Ukraine. To achieve this goal the following tasks: determining trends and key factors in land use of cities; characteristics of land; the definition of urban areas and limitations in their use. Improved classification of the factors which allows for cartographic provision of land in cities and their investment potential, level of interaction between different stakeholder groups, areas of urban development, which allows to generate methodical toolkit for estimation of the level of investment attractiveness of land in cities. Define the factors and features of their influence on investment processes in the sphere of land use of cities of Ukraine. Prospects of further research is to develop a methodological approach to the evaluation of the level of investment attractiveness of land in cities and substantiation of measures on the increase of efficiency of their use.

scholarly journals ANALYSIS OF FACTORS AFFECTING PRICING IN THE OIL MARKET

2018 ◽  
Vol 1 (12) ◽  
pp. 258-262
Author(s):  
Yuliya Zarubina
Keyword(s):  
Supply And Demand ◽  
Petroleum Products ◽  
Oil Products ◽  
Subjective Character ◽  
Factors Affecting ◽  
Oil Market ◽  
Main Factors

The article considers, systematizes and analyzes the main factors affecting the price of petroleum products. Classification of factors with allocation of factors of supply and demand, factors of objective and subjective character is offered. Seasonality factor are analyzed. The modern tendencies of the market of oil products are defined

scholarly journals Critical Issues and Guidelines to Improve the Performance of Photocatalytic Polymeric Membranes

Catalysts ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. 570 ◽  
Author(s):  
Marta Romay ◽  
Nazely Diban ◽  
Maria J. Rivero ◽  
Ane Urtiaga ◽  
Inmaculada Ortiz
Keyword(s):  
Process Intensification ◽  
Polymeric Membranes ◽  
Membrane Reactors ◽  
Factors Affecting ◽  
Aqueous Streams ◽  
Critical Issues ◽  
Synthesis Methodology ◽  
Recovery Problem ◽  
Technological Competitiveness ◽  
Selection Of

Photocatalytic membrane reactors (PMR), with immobilized photocatalysts, play an important role in process intensification strategies; this approach offers a simple solution to the typical catalyst recovery problem of photocatalytic processes and, by simultaneous filtration and photocatalysis of the aqueous streams, facilitates clean water production in a single unit. The synthesis of polymer photocatalytic membranes has been widely explored, while studies focused on ceramic photocatalytic membranes represent a minority. However, previous reports have identified that the successful synthesis of polymeric photocatalytic membranes still faces certain challenges that demand further research, e.g., (i) reduced photocatalytic activity, (ii) photocatalyst stability, and (iii) membrane aging, to achieve technological competitiveness with respect to suspended photocatalytic systems. The novelty of this review is to go a step further to preceding literature by first, critically analyzing the factors behind these major limitations and second, establishing useful guidelines. This information will help researchers in the field in the selection of the membrane materials and synthesis methodology for a better performance of polymeric photocatalytic membranes with targeted functionality; special attention is focused on factors affecting membrane aging and photocatalyst stability.

scholarly journals Seed losses during the harvesting of oilseed rape (Brassica napus L.) at on-farm scale

2013 ◽  
Vol 44 (2s) ◽  
Author(s):  
L. Pari ◽  
A. Assirelli ◽  
A. Suardi ◽  
V. Civitarese ◽  
A. Del Giudice ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Large Scale ◽  
Total Production ◽  
Brassica Napus L ◽  
Seed Shattering ◽  
Factors Affecting ◽  
Farm Scale ◽  
Main Factors ◽  
On Farm

In the Italian environments, the rapeseed (Brassica napus L.) is subjected, at ripening, to a seed shattering causing significant losses that reduce the yield and increase the oilseed rape seedbank in the soil. Meteorological events and mechanical harvesting are the main factors affecting the extent of seed dispersal. Lacking the availability of works investigating the actual losses during the harvest at large scale, the Consiglio per la sperimentazione e la ricerca in agricoltura, Unità di ricerca per l’ingegneria agraria (CRA-ING) has conducted a study in order to determine the effective seed losses at on-farm scale. The amount of losses of two combine headers, traditional for wheat and specific for oilseed rape harvest, was compared. The rapeseed header had a hydraulic sliding cut-bar and two vertical electric blade on both sides in order to reduce the pulling and tearing action between the cut-off plants and those still standing. The seed losses were evaluated before and during the harvesting by using plastic trays placed on the ground within the crop rows. The trays were arranged in a layout allowing the estimation of the seed losses of three different sectors of the combine headers. The results have demonstrated that, at farm level, the use of a specific oilseed rape header adapted and optimized for the crop requirements allows to obtain a level of seed losses (0,97% of total production), below the values reported in literature. For rapeseed, the higher losses are localized at the final parts of the head, where the plants are strictly intertwined.

Recent Rapid Climate Changes in Antarctic and their Influence on Low Diversity Ecosystems

2010 ◽  
Vol 17 (1) ◽  
pp. 17-30 ◽  
Author(s):  
Katarzyna J. Chwedorzewska
Keyword(s):  
Environmental Variables ◽  
Climate Changes ◽  
Biological Significance ◽  
Global Changes ◽  
Factors Affecting ◽  
Low Diversity ◽  
Main Factors ◽  
The Antarctic ◽  
High Diversity ◽  
Temperature Water

ABSTRACTThe geographic position, astronomic factors (e.g. the Earth’s maximum distance from the Sun during winter), ice cover and altitude are the main factors affecting the climate of the Antarctic, which is the coldest place on Earth. Parts of Antarctica are facing the most rapid rates of anthropogenic climate change currently seen on the planet. Climate changes are occurring throughout Antarctica, affecting three major groups of environmental variables of considerable biological significance: temperature, water, UV-B radiation.Low diversity ecosystems are expected to be more vulnerable to global changes than high diversity ecosystems

Improving management as a way to increase labour productivity

Upravlenie ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 24-30
Author(s):  
A. O. Ivanov
Keyword(s):  
Productivity Growth ◽  
Labour Productivity ◽  
Production Costs ◽  
Managerial Practices ◽  
Industrial Enterprises ◽  
Labour Productivity Growth ◽  
Period 2 ◽  
Main Factors ◽  
The Moment

The article gives an overview, performs analysis and classification of successful managerial practices applied at Russian industrial enterprises in the framework of the national project “Labour productivity and employment support”. The paper emphasizes the main factors of labour productivity growth as follows: investment policy, growth of human capital, and efficient use of managerial capital of enterprise. In order to determine the need of enterprises to increase labour productivity, the author proposes four universal criteria that signal the existing inefficiency even before the loss of competitiveness: 1) the dynamics of labour productivity in the company is not positive during a given period; 2) the company is behind competitors by labour productivity indicator; 3) the company is behind competitors by labour productivity growth rates indicator for a certain period; 4) unit production costs rise. These criteria allow you to take into account the situation both within the enterprise and in comparison with other enterprises. Each criteria can be considered separately or in combination with the others, applied to enterprises of different industries, specialization, and scale. Criteria indicate the direction of development in which the company is experiencing difficulties at the moment, or may experience them in the future.

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