scholarly journals EFFICIENCY OF ANTHROPOGENIC ENERGY COSTS IN THE CREATION AND LONG-TERM USE OF DIFFERENT-RIPENING CEREAL HAYFIELDS

2021 ◽  
Author(s):  
Natalya Zhezmer
Keyword(s):  
Energy Production ◽  
Metabolic Energy ◽  
Energy Costs ◽  
Energy Assessment ◽  
Natural Factors ◽  
The Creation

The results of the agro-energy assessment of the creation and long-term haymaking use (for 27 years) of different-ripening cereal grasses are presented. The total costs of anthropogenic energy were recouped by the collection of metabolic energy by 2,8–3,3 times. In the structure of metabolic energy production, renewable natural factors accounted for 64–70%.

scholarly journals AGRO-ENERGY EFFICIENCY OF CREATION AND LONG-TERM INTENSIVE USE OF EARLY- AND MEDIUM-RIPENING CEREALS GRASS STANDS

2021 ◽  
Author(s):  
Natalya Zhezmer
Keyword(s):  
Energy Efficiency ◽  
Main Part ◽  
High Efficiency ◽  
Metabolizable Energy ◽  
Energy Assessment ◽  
Natural Factors ◽  
Intensive Use ◽  
The Creation

The agro-energy assessment showed the high efficiency of the creation and long-term three-mowing use of cereal grass stands. The collection of metabolizable energy on agrocenoses of different ripening was 58–69 GJ/ha on average over 27 years. In the structure of its production, the main part (60–66%) is provided by natural factors.

scholarly journals Energy potential festulolium herbage with short-term and long-term use

2021 ◽  
Author(s):  
Kira Privalova ◽  
Ruslan Karimov
Keyword(s):  
Energy Production ◽  
High Energy ◽  
Metabolic Energy ◽  
Short Term ◽  
Energy Potential ◽  
Leading Role ◽  
Natural Factors

The studies for the period 2004–2017, he reveals a high energy potential of pasture herbage technologies, created on the basis of domestic varieties of Festulolium VIK 90 at 6-and 14-year-old terms of use. The ratio of anthropogenic and natural factors in the production of pasture feed is given. At the same time, the leading role of renewable natural factors has been revealed: they account for 66–71% of the structure of metabolic energy production.

scholarly journals AGROENERGY EFFICIENCY OF IMPROVED TECHNOLOGIES FOR CREATION AND USE OF ALFALFA-CEREAL HAYMAKING IN THE NON-CHERNOZEM ZONE

2021 ◽  
Author(s):  
Anel Kutuzova ◽  
Elena Provornaya ◽  
Galina Stepanova
Keyword(s):  
Production Process ◽  
Energy Method ◽  
Sinorhizobium Meliloti ◽  
Podzolic Soil ◽  
Metabolic Energy ◽  
Nitrogen Fertilizers ◽  
Natural Factors ◽  
High Share ◽  
Additional Nitrogen

On the basis of field experience in the creation of alfalfa-grass stands on sod-podzolic soil of the Non-Chernozem zone, a high agroenergetic efficiency of improved technologies has been established, including two zoned varieties of alfalfa changeable (Lugovaya 67 and Pastbishchnaya 88) in combination with agrotechnical methods (change in the composition of leguminous species in the previous period and pre-sowing inoculation of alfalfa seeds with complementary strains of Sinorhizobium meliloti). As a result of the application of the agro-energy method for assessing the production of exchangeable energy and total anthropogenic costs in uniform indicators according to the international SI system (GJ/ha), their payback was established — 8–11 times. This was achieved due to a high share of natural factors (88–91% of total costs), additional nitrogen input into the production process due to increased symbiotic fixation (141–171 kg/ha per year) and long-term use — for 7 years. The productivity of 1 hectare was 62–64 GJ/ha metabolic energy, the collection of protein was 956–1120 kg/ha, the saving of anthropogenic costs due to the exclusion of the use of nitrogen fertilizers was 17–21 GJ/ha.

From Start-Up to Scale-Up

2018 ◽  
Author(s):  
Gilles Duruflé ◽  
Thomas Hellmann ◽  
Karen Wilson
Keyword(s):  
United States ◽  
Conceptual Framework ◽  
Public Policies ◽  
Scale Up ◽  
The United States ◽  
Smart Money ◽  
Start Up ◽  
The Us ◽  
The Creation

This chapter examines the challenge for entrepreneurial companies of going beyond the start-up phase and growing into large successful companies. We examine the long-term financing of these so-called scale-up companies, focusing on the United States, Europe, and Canada. The chapter first provides a conceptual framework for understanding the challenges of financing scale-ups. It emphasizes the need for investors with deep pockets, for smart money, for investor networks, and for patient money. It then shows some data about the various aspects of financing scale-ups in the United States, Europe, and Canada, showing how Europe and Canada are lagging behind the US relatively more at the scale-up than the start-up stage. Finally, the chapter raises the question of long-term public policies for supporting the creation of a better scale-up environment.

scholarly journals Global Analysis of Durable Policies for Free-Flowing River Protections

2021 ◽  
Vol 13 (4) ◽  
pp. 2347 ◽  
Author(s):  
Denielle Perry ◽  
Ian Harrison ◽  
Stephannie Fernandes ◽  
Sarah Burnham ◽  
Alana Nichols
Keyword(s):  
Global Analysis ◽  
Freshwater Ecosystems ◽  
Global Networks ◽  
Protection Mechanisms ◽  
The Creation ◽  
River Conservation ◽  
Protected Area Planning ◽  
Policy Types ◽  
Policy Mechanisms

Freshwater ecosystems are poorly represented in global networks of protected areas. This situation underscores an urgent need for the creation, application, and expansion of durable (long-term and enforceable) protection mechanisms for free-flowing rivers that go beyond conventional protected area planning. To address this need, we must first understand where and what types of protections exist that explicitly maintain the free-flowing integrity of rivers, as well as the efficacy of such policy types. Through policy analysis and an in-depth literature review, our study identifies three main policy mechanisms used for such protections: (1) River Conservation Systems; (2) Executive Decrees and Laws; and (3) Rights of Rivers. We found that globally only eight counties have national river conservation systems while seven countries have used executive decrees and similar policies to halt dam construction, and Rights of Rivers movements are quickly growing in importance, relative to other protection types. Despite the current extent of protection policies being insufficient to tackle the freshwater and biodiversity crises facing the world’s rivers, they do provide useful frameworks to guide the creation and expansion of protections. Ultimately, as countries act on global calls for protections, policy mechanisms must be tailored to their individual social and ecological geographies.

scholarly journals Edible Energy Production and Energy Return on Investment—Long-Term Analysis of Global Changes

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1011
Author(s):  
Bartłomiej Bajan ◽  
Joanna Łukasiewicz ◽  
Agnieszka Poczta-Wajda ◽  
Walenty Poczta
Keyword(s):  
Energy Efficiency ◽  
Return On Investment ◽  
Food Production ◽  
Energy Production ◽  
Crop Production ◽  
Fossil Fuels ◽  
Animal Production ◽  
Global Changes ◽  
Energy Return On Investment

The projected increase in the world’s population requires an increase in the production of edible energy that would meet the associated increased demand for food. However, food production is strongly dependent on the use of energy, mainly from fossil fuels, the extraction of which requires increasing input due to the depletion of the most easily accessible deposits. According to numerous estimations, the world’s energy production will be dependent on fossil fuels at least to 2050. Therefore, it is vital to increase the energy efficiency of production, including food production. One method to measure energy efficiency is the energy return on investment (EROI), which is the ratio of the amount of energy produced to the amount of energy consumed in the production process. The literature lacks comparable EROI calculations concerning global food production and the existing studies only include crop production. The aim of this study was to calculate the EROI of edible crop and animal production in the long term worldwide and to indicate the relationships resulting from its changes. The research takes into account edible crop and animal production in agriculture and the direct consumption of fossil fuels and electricity. The analysis showed that although the most underdeveloped regions have the highest EROI, the production of edible energy there is usually insufficient to meet the food needs of the population. On the other hand, the lowest EROI was observed in highly developed regions, where production ensures food self-sufficiency. However, the changes that have taken place in Europe since the 1990s indicate an opportunity to simultaneously reduce the direct use of energy in agriculture and increase the production of edible energy, thus improving the EROI.

Technology and Employment in Developing Countries

1978 ◽  
Vol 16 (4) ◽  
pp. 549-564 ◽  
Author(s):  
J. W. Garmany
Keyword(s):  
Developing Countries ◽  
Optimum Combination ◽  
Current Consumption ◽  
The Creation ◽  
Relationship Of ◽  
The Relationship ◽  
Choice Of Technology

This article discusses some of the issues involved in the choice of technology in developing countries, especially those in Africa, and the relationship of this to employment and output. The problem is to find an optimum combination of productive resources that comes nearest to satisfying two objectives: the full and economically efficient utilisation of such resources, and the creation of as much surplus as possible over current consumption, thereby making possible new investment and long-term growth.

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