Green Technologies for the Defluoridation of Water

2021 ◽  
Keyword(s):  
Green Technologies ◽  
Defluoridation Of Water

Defluoridation of water supplies

Waterlines ◽  
1983 ◽  
Vol 2 (1) ◽  
pp. 26-27 ◽  
Author(s):  
Tjiook
Keyword(s):  
Water Supplies ◽  
Defluoridation Of Water

STATE SUPPORT FOR «GREEN» INVESTMENTS AND MARKET «GREEN» FINANCING: FOREIGN EXPERIENCE

2019 ◽  
pp. 97-108
Author(s):  
L.S. Kabir
Keyword(s):  
Economic Growth ◽  
Government Support ◽  
Policy Support ◽  
Green Economy ◽  
Economic Policies ◽  
State Support ◽  
Green Technologies ◽  
Foreign Countries ◽  
The Government ◽  
Green Investments

The present study reveals the trends and features of the current state of financing the foreign countries’ transition to a new «green» economic growth model. To summarize the contemporary experience of countries’ integration into public administration practice the approaches and standards in the field of «green» investments financing.The subject of the study is the set of measures implemented by countries to develop sources of finance for «green» economy projects.Tasks: 1) to consider the principal directions of the «green» investments state policy support, its purpose, and the tools used; 2) to identify the market’s role in the «green» economy financing; 3) to clarify the main issues constraining private investments in «green» projects. The countries’ approach to «green» economic growth financing is examined in the present paper by means of common methods of scientific knowledge.There reviewed the arguments justifying the government support for «green» investments. There revealed the problems constraining the market «green» financing development and speculations about their origins. The study concludes that the countries’ economic policies are aimed at improving the existing model’s efficiency, not at the transition to the new «green» economy model. Thus, through the state support tools, there being generated strong signals signifying the creation of favorable market conditions for the functioning of a new economy sector – the sector of «green» technologies.

Recent Advances in the Development of Antimicrobial Peptides (AMPs): Attempts for Sustainable Medicine?

2018 ◽  
Vol 25 (21) ◽  
pp. 2503-2519 ◽  
Author(s):  
Anne Kokel ◽  
Marianna Torok
Keyword(s):  
Side Effects ◽  
Antimicrobial Peptides ◽  
Potential Drug ◽  
Green Technologies ◽  
Specific Antibodies ◽  
Structural Modifications ◽  
Drug Candidates ◽  
Induce Resistance ◽  
Conventional Antibiotics

Background: Since the first isolation of antimicrobial peptides (AMPs) they have attracted extensive interest in medicinal chemistry. However, only a few AMP-based drugs are currently available on the market. Despite their effectiveness, biodegradability, and versatile mode of action that is less likely to induce resistance compared to conventional antibiotics, AMPs suffer from major issues that need to be addressed to broaden their use. Notably, AMPs can lack selectivity leading to side effects and cytotoxicity, and also exhibit in vivo instability. Several strategies are being actively considered to overcome the limitations that restrain the success of AMPs. Methods: In the current work, recent strategies reported for improving AMPs in the context of drug design and delivery were surveyed, and also their possible impact on patients and the environment was assessed. Results: As a major advantage AMPs possess an easily tunable skeleton offering opportunities to improve their properties. Strategic structural modifications and the beneficial properties of cyclic or branched AMPs in term of stability have been reported. The conjugation of AMPs with nanoparticles has also been explored to increase their in vivo stability. Other techniques such as the coupling of AMPs with specific antibodies aim to increase the selectivity of the potential drug towards the target. These strategies were evaluated for their effect on the environment highlighting green technologies. Conclusion: Although further research is needed taking into account both environmental and human health consequences of novel AMPs, several of these compounds are promising drug candidates for use in sustainable medicine.

Extraction of Essential Oils from Medicinal Plants and their Utilization as Food Antioxidants

2020 ◽  
Vol 26 (5) ◽  
pp. 519-541 ◽  
Author(s):  
Giovanna Ferrentino ◽  
Ksenia Morozova ◽  
Christine Horn ◽  
Matteo Scampicchio
Keyword(s):  
Chemical Composition ◽  
Medicinal Plants ◽  
Beneficial Effect ◽  
Essential Oils ◽  
Bioactive Compounds ◽  
Antimicrobial Properties ◽  
Food Products ◽  
Human Diseases ◽  
Present Review ◽  
Green Technologies

Background: The use of essential oils is receiving increasing attention worldwide, as these oils are good sources of several bioactive compounds. Nowadays essential oils are preferred over synthetic preservatives thanks to their antioxidant and antimicrobial properties. Several studies highlight the beneficial effect of essential oils extracted from medicinal plants to cure human diseases such as hypertension, diabetes, or obesity. However, to preserve their bioactivity, the use of appropriate extraction technologies is required. Method: The present review aims to describe the studies published so far on the essential oils focusing on their sources and chemical composition, the technologies used for their recovery and their application as antioxidants in food products. Results: The review has been structured in three parts. In the first part, the main compounds present in essential oils extracted from medicinal plants have been listed and described. In the second part, the most important technologies used for extraction and distillation, have been presented. In detail, conventional methods have been described and compared with innovative and green technologies. Finally, in the last part, the studies related to the application of essential oils as antioxidants in food products have been reviewed and the main findings discussed in detail. Conclusions: In summary, an overview of the aforementioned subjects is presented by discussing the results of the most recent published studies.

Formation of the multifunctional metal-polymer composite with antiseptic, anesthetic and bactericidal properties by green technologies

2018 ◽  
Author(s):  
E. E. Said-Galiev ◽  
M. S. Rubina ◽  
A. Yu. Vasil’kov ◽  
A. V. Naumkin ◽  
A. R. Khokhlov ◽  
...  
Keyword(s):  
Polymer Composite ◽  
Green Technologies ◽  
Bactericidal Properties ◽  
Metal Polymer

scholarly journals Optimizing a Sustainable Supply Chain Inventory Model for Controllable Deterioration and Emission Rates in a Greenhouse Farm

Mathematics ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 495
Author(s):  
Umakanta Mishra ◽  
Abu Hashan Md Mashud ◽  
Ming-Lang Tseng ◽  
Jei-Zheng Wu
Keyword(s):  
Supply Chain ◽  
Carbon Emissions ◽  
Trade Credit ◽  
Numerical Study ◽  
Inventory Model ◽  
Green Technology ◽  
Solution Technique ◽  
Emission Rates ◽  
Sustainable Supply Chain ◽  
Green Technologies

This study investigated how greenhouse managers should invest in preservation and green technologies and introduce trade credit to increase their profits. We propose a supply chain inventory model with controllable deterioration and emission rates under payment schemes for shortage and surplus, where demand depends on price and trade credit. Carbon emissions and deterioration are factors affecting global warming, and many greenhouse managers have focused on reducing carbon emissions. Carbon caps and tax-based incentives have been used in many greenhouses to achieve such reduction. Because of the importance of reducing carbon emissions for developing a green supply chain, various studies have investigated how firms deal with carbon emission constraints. In this continuation, we have used green technology to curb the excessive emissions from the environment or make it clean from CO2. In a seller–buyer relationship, the seller can offer a trade credit period to the buyer to manage stock and stimulate demand. Deterioration may become a challenge for most firms as they are under time constraints control, and preservation technology could help. This study proposes three novel inventory strategies for a sustainable supply chain (full backorder, partial backorder, and no backorder), linking all these important issues. The solution optimizes total annual profit for inventory shortage or surplus. We conducted a numerical study with three examples to evaluate the model’s authenticity and effectiveness and demonstrate the solution technique. The deterioration and emission rates can be included in a trade credit policy to increase greenhouse profits. The results suggest that greenhouse managers could apply the proposed model to manage real-world situations.

scholarly journals Comparative Study on the Essential Oils from Five Wild Egyptian Centaurea Species: Effective Extraction Techniques, Antimicrobial Activity and In-Silico Analyses

Antibiotics ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 252
Author(s):  
Eman H. Reda ◽  
Zienab T. Abdel Shakour ◽  
Ali M. El-Halawany ◽  
El-Sayeda A. El-Kashoury ◽  
Khaled A. Shams ◽  
...  
Keyword(s):  
Antimicrobial Activity ◽  
Essential Oils ◽  
In Silico ◽  
Folk Medicine ◽  
Principal Component ◽  
Binding Pocket ◽  
Green Technologies ◽  
Sample Classification ◽  
Docking Approach

The genus Centaurea is recognized in folk medicine for anti-inflammatory, anti-itch, antitussive, purgative, astringent, and tonic activities. To study the chemical determinant for antimicrobial activity essential oils (EOs), five Centaurea species were analyzed including: C. scoparia, C. calcitrapa, C. glomerata, C. lipii and C. alexandrina. Conventional hydro-distillation (HD) and microwave-assisted extraction (MAE), as new green technologies, were compared for the extraction of essential oils. GC/MS analysis identified 120 EOs including mostly terpenoid except from C. lipii and C. alexandrina in which nonterpenoids were the major constituents. Major terpenoids included spathulenol, caryophyllene oxide and alloaromadendrene oxide-2. To probe antibacterial activity, potential EO inhibitors of a bacterial type II DNA topoisomerase, DNA gyrase B were screened via an in silico molecular docking approach. Spathulenol and alloaromadendrene oxide-2 possessed the best binding affinity in the ATP- binding pocket of Gyrase B enzyme. Principal component analysis and agglomerative hierarchical clustering were used for sample classification and revealed that sesquiterpenes contributed the most for accessions classification. In vitro antimicrobial activity against Staphylococcus aureus, Escherichia coli and Aspergillus niger for all EOs were also evaluated. EOs from C. lipii, C. glomerata and C. calcitrapa exhibited significant MIC against S. aureus with an MIC value of 31.25 µg/mL.

Sign in / Sign up

Export Citation Format

Share Document