scholarly journals Study on the perspectives of application of eco-friendly laser biotechnology for environmental protection in Uzbekistan

2021 ◽  
Vol 939 (1) ◽  
pp. 012083
Author(s):  
O Tursunov ◽  
J W Dobrowolski ◽  
O Khujaev ◽  
N Abduganiev ◽  
O J Nazarova ◽  
...  
Keyword(s):  
Environmental Protection ◽  
Laser Irradiation ◽  
Toxic Substance ◽  
Aral Sea ◽  
International Crisis ◽  
Environmental Challenges ◽  
Natural Processes ◽  
Waste Production ◽  
Wide Scale

Abstract Since few decades, the world is encountering unusual and daunting environmental challenges like global warming, climate change, pollution of the atmosphere and water, an emerging international crisis in water availability, long-term damage to ecosystems and substantial loss of biodiversity, waste production and disposal, damaged aquatic ecosystems, impacts of chemicals use and toxic substance disposal, as well as land degradation and deforestation. Accordingly, Uzbekistan has also been encountering some environmental issues, such as global Aral Sea crisis, soil erosion and desertification, wastewater, air pollution and a growing amount of municipal solid waste. Hence, this paper illustrates the major environmental challenges and risks in Uzbekistan, as well as, the possible application of environmentally friendly laser biotechnology for more efficient and rationale protection of ecosystems and wide-scale reclamation of deteriorated areas. Comprehensive use of laser irradiation can be effectively applied in environmental protection engineering and technologies for sustainable development in selected regions. Laser irradiation or photostimulation is a neoteric area and process of environmental biotechnology. In this process, coherent laser light is employed to optimize the natural processes involved in the bioremediation of xenobiotics or bioaccumulation of metals. Additionally, laser biotechnology could be broadly used for more efficient reclamation of contaminated soil, wastewater treatment, as well as for increasing the growth rate of irradiated plants and their resistance to various macro- and micro pollutants in the air, soil, and water.

Connecting Crop Nutrient Use Efficiency to Future Soil Productivity

2018 ◽  
Vol 102 (4) ◽  
pp. 8-10
Author(s):  
Fernando García ◽  
Andrés Grasso ◽  
María González Sanjuan ◽  
Adrián Correndo ◽  
Fernando Salvagiotti
Keyword(s):  
Nutrient Management ◽  
Nutrient Use Efficiency ◽  
Management Strategies ◽  
Crop Productivity ◽  
Soil Productivity ◽  
Nutrient Use ◽  
Grain Crop ◽  
Wide Scale ◽  
Use Efficiency

Trends over the past 25 years indicate that Argentina’s growth in its grain crop productivity has largely been supported by the depletion of the extensive fertility of its Pampean soils. Long-term research provides insight into sustainable nutrient management strategies ready for wide-scale adoption.

(A review) Atlas of especially protected natural areas of Saint Petersburg / Ed. in chief V. N. Khramtsov, T. V. Kovaleva, N. Yu. Natsvaladze. St. Petersburg, 2013. 176 p.

2014 ◽  
pp. 124-129
Author(s):  
Z. V. Karamysheva
Keyword(s):  
Protected Areas ◽  
Large Scale ◽  
Natural Areas ◽  
Natural Protected Areas ◽  
Saint Petersburg ◽  
Natural Processes ◽  
Original Illustrations ◽  
Vegetation Maps ◽  
Protected Natural Areas

The review contains detailed description of the «Atlas of especially protected natural areas of Saint Petersburg» published in 2013. This publication presents the results of long-term studies of 12 natural protected areas made by a large research team in the years from 2002 to 2013 (see References). The Atlas contains a large number of the historical maps, new satellite images, the original illustrations, detailed texts on the nature of protected areas, summary tables of rare species of vascular plants, fungi and vertebrates recorded in these areas. Special attention is paid to the principles of thematic large-scale mapping. The landscape maps, the vegetation maps as well as the maps of natural processes in landscapes are included. Reviewed Atlas deserves the highest praise.

scholarly journals The reputation trap of NGO accountability

2015 ◽  
Vol 7 (3) ◽  
pp. 426-463 ◽  
Author(s):  
Stephen E. Gent ◽  
Mark J. C. Crescenzi ◽  
Elizabeth J. Menninga ◽  
Lindsay Reid
Keyword(s):  
Theoretical Model ◽  
Unintended Consequences ◽  
International Crisis ◽  
Governmental Organizations ◽  
Non Governmental Organizations ◽  
Policy Goals ◽  
Ngo Accountability ◽  
The Relationship

Can concerns for one’s reputation cause non-governmental organizations (NGOs) to alter their behavior to the detriment of achieving their policy goals? To answer this question, we explore the relationship between NGOs and their donors. Our theoretical model reveals that reputation can be a key piece of information in the decision to fund an NGO’s activities. Reputation can become so important to the NGO’s survival that it interferes with the long-term policy goals of the organization. As such, reputations can become a double-edged sword, simultaneously providing the information donors seek while constraining NGOs from realizing policy goals. We apply this logic to the problem of NGO accountability, which has received increasing attention in recent years, and demonstrate that the tools used by donors to improve accountability can trigger unintended consequences. We illustrate this strategic dynamic with two types of NGO activity: water improvement and international crisis mediation.

Phytoplankton Adaptation to Environmental Stresses from Toxicants, Nutrients, and Pollutants — a Warning

1976 ◽  
Vol 33 (9) ◽  
pp. 2089-2096 ◽  
Author(s):  
John G. Stockner ◽  
Naval J. Antia
Keyword(s):  
Environmental Protection ◽  
Pollutant Concentration ◽  
Subsequent Growth ◽  
Short Term ◽  
Present Evidence ◽  
Test Chemical ◽  
Successful Adaptation ◽  
Shock Response ◽  
Chronic Pollution

Examples are cited from the literature of phytoplankton-related pollution and nutrition studies where the possibility of successful adaptation and subsequent growth could have been overlooked because of insufficient duration of algal exposure to the pollutant or nutrient tested. We present evidence from our investigations where: a) initial algal exposures as long as 20–40 days to the pollutant or alternative nutrient may be required for successful adaptation, and b) phytoplankters initially tolerating only a low level of pollutant concentration could be trained to accept severalfold higher levels by repeated exposure to gradually increasing pollutant concentration A plea is made for future investigators to recognize the importance of long-term bioassays ascertaining algal potential for adaptation, in order that their results may be ecologically realistic for the purpose of environmental protection against chronic pollution and eutrophication. The short-term "shock" response should be clearly distinguished from the long-term habituation response of phytoplankters to the test chemical in these bioassays. Possible problems raising questionable objections to the long-term bioassay approach are discussed.

The Research on the Strategies for Sustainable Development and Environmental Protection

2013 ◽  
Vol 869-870 ◽  
pp. 786-790
Author(s):  
Chen Chen Zhang
Keyword(s):  
Sustainable Development ◽  
Environmental Protection ◽  
Development Strategy ◽  
Protection Measures ◽  
The Sustainable Development ◽  
National Economic ◽  
History Of ◽  
Dialectical Relationship ◽  
Relationship Of

The strategies for sustainable development have been included in the medium and long term plan of 2010 for national economic and social development. Protecting the environment is the most important prerequisite and safeguards for the sustainable development strategy. In the study, we described the history of the environmental problems in the world, the proposal and implications of sustainable development, and outlined the dialectical relationship of development with the environment. The environmental protection measures for sustainable development were proposed here, according to the environmental situation severely affecting its biophysical environment.

Phycoremediation of wastewater for pollutant removal: A green approach to environmental protection and long-term remediation

2021 ◽  
pp. 117989
Author(s):  
Stephen Dayana Priyadharshini ◽  
Palanisamy Suresh Babu ◽  
Sivasubramanian Manikandan ◽  
Ramasamy Subbaiya ◽  
Muthusamy Govarthanan ◽  
...  
Keyword(s):  
Environmental Protection ◽  
Pollutant Removal ◽  
Green Approach

scholarly journals Process Design for a Production of Sustainable Materials from Post-Production Clay

Materials ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 953
Author(s):  
Michał Łach ◽  
Reda A. Gado ◽  
Joanna Marczyk ◽  
Celina Ziejewska ◽  
Neslihan Doğan-Sağlamtimur ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Waste Production ◽  
Sustainable Materials ◽  
Post Production ◽  
Rich Material ◽  
Jurassic Limestone ◽  
By Products ◽  
Alkali Activated

Alkali activated cement (AAC) can be manufactured from industrial by-products to achieve goals of “zero-waste” production. We discuss in detail the AAC production process from (waste) post-production clay, which serves as the calcium-rich material. The effect of different parameters on the changes in properties of the final product, including morphology, phase formation, compressive strength, resistance to the high temperature, and long-term curing is presented. The drying and grinding of clay are required, even if both processes are energy-intensive; the reduction of particle size and the increase of specific surface area is crucial. Furthermore, calcination at 750 °C ensure approximately 20% higher compressive strength of final AAC in comparison to calcination performed at 700 °C. It resulted from the different ratio of phases: Calcite, mullite, quartz, gehlenite, and wollastonite in the final AAC. The type of activators (NaOH, NaOH:KOH mixtures, KOH) affected AAC mechanical properties, significantly. Sodium activators enabled obtaining higher values of strength. However, if KOH is required, the supplementation of initial materials with fly ash or metakaolin could improve the mechanical properties and durability of AAC, even c.a. 28%. The presented results confirm the possibility of recycling post-production clay from the Raciszyn II Jurassic limestone deposit.

Geomorphological numerical modelling of woody dams in CAESAR-Lisflood

2021 ◽  
Author(s):  
Josh Wolstenholme ◽  
Christopher Skinner ◽  
David Milan ◽  
Daniel Parsons
Keyword(s):  
Flood Risk ◽  
Flood Management ◽  
River Channels ◽  
Sensitivity Testing ◽  
Spatial And Temporal Scales ◽  
Natural Processes ◽  
Natural Wood ◽  
Long Term Impact ◽  
Morphology Influence

<p>Natural flood management (NFM) promotes the sustainable enhancement of natural fluvial processes to reduce flooding (SEPA, 2015; Wilkinson et al., 2019), and is increasingly popular for use by community groups, contractors and governments (Kay et al., 2019). Reintroduction of wood to a river channel is a popular form of NFM often achieved through seeding natural logjams, or with an emphasis on engineering through installing woody dams (WDs). WDs are currently installed or being installed in catchments in an effort to reduce flood risk, through hydrograph attenuation, increase biodiversity and improve geomorphic heterogeneity (Wenzel et al., 2014; Burgess-Gamble et al., 2017; Grabowski et al., 2019). A further objective is to emulate the effect of natural wood found in river channels by partially, or completely, blocking the channel to accelerate the recruitment of natural wood as part of the natural wood cycle (Addy & Wilkinson, 2016).</p><p>There is a growing body of evidence supporting the benefits of NFM, however, the hydrogeomorphic effects of WDs are less well understood (Dadson et al., 2017). There is little scientific underpinning concerning the long-term impact of these features upon hydrogeomorphology at reach and catchment-scales. Very few numerically based studies consider the influence of sediment transport on WDs, and how changes in local bed morphology influence their effectiveness. Most NFM research to date has focused upon modelling the effectiveness of local NFM measures in small catchments (<10 km<sup>2</sup>) (Dadson et al., 2017), with less work evident at larger spatial and temporal scales (Kay et al., 2019; Wilkinson et al., 2019).</p><p>There is a need for a verified tool that is able to represent WDs accounting for geomorphic processes and interactions between the dams and morphodynamics, different design specifications of dams, and changing efficacy due to geomorphic evolution. We present the new CAESAR-Lisflood (Coulthard et al., 2013) “Working with Natural Processes” toolkit, capable of representing WDs across a digital experimental environment. Global sensitivity testing was conducted using the Morris method (Morris, 1991) to assess the sensitivity of five aspects of the toolkit, and their potentially influences on geomorphology and flood risk reduction.</p>

Argon laser irradiation of the semicircular canal in two patients with benign paroxysmal positional vertigo

2002 ◽  
Vol 116 (9) ◽  
pp. 723-725 ◽  
Author(s):  
Yasuya Nomura
Keyword(s):  
Laser Irradiation ◽  
Benign Paroxysmal Positional Vertigo ◽  
Semicircular Canals ◽  
Argon Laser ◽  
Laser Device ◽  
Positional Vertigo ◽  
Long Term Follow Up ◽  
Paroxysmal Positional Vertigo

The results of long-term follow-up after surgical treatment of two patients with intractable benign paroxysmal positional vertigo are reported. Argon laser irradiation of the blue-lined posterior and lateral semicircular canals in one patient, and of only the posterior canal in the other was performed seven and six years ago, respectively. Argon laser irradiation was carried out 10 times in succession three mm along the canal to occlude it. The power applied each time was 1.5.W on the dial of the laser device for 0.5.sec. Relief of vertigo was noted on the second post-irradiation day. There has been no recurrence of vertigo in these patients.

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