scholarly journals Limnological Features of the Southern Part of Gharaf River and the Impacts of Floodplain Period on its Characteristics

2021 ◽  
pp. 415-430
Author(s):  
Zahraa N. Khalaf ◽  
Muhanned R. Nashaat ◽  
Jameel S. AL-Sariy
Keyword(s):  
River Water ◽  
Chemical Properties ◽  
The Other ◽  
Total Alkalinity ◽  
Clean Water ◽  
Strong Connection ◽  
A Value ◽  
Physical Chemical ◽  
International Water ◽  
The Impact

The current study was conducted on the southern part of Gharaf  River in   order to define the physical-chemical properties and the impact of the Tigris River’s floodplain water on its ecological characteristics during 2019. Four sites were selected along the southern part of the river. The findings showed a strong connection between the temperature of air and water at all sites. A value ranging from 4.85 - 84.65 NTU was reported for turbidity. The water was found to be oligohaline, low alkaline, and well ventilated due to high dissolved oxygen concentrations. Gharaf  River is considered to be of questionable clean water, according to the results of BOD5. The total alkalinity values were recorded to be in the range of 92-292.8 mg /L, which are higher than the acceptable limits of 20-200 mg /L CaCO3 for the Iraqi and international water standards. It was also found that Gharaf  River water was very hard, but still within the allowable natural water limits (200 mg /L Ca and 150 mg /L Mg). Concentrations of sulphate ranged 50-200 mg / L, while levels of bicarbonate ranged 140-230 mg /L. On the other hand, ranges of 3354-855 mg / L and 3-85 mg / L, respectively, were recorded for TDS and TSS. In addition, nitrates values were found to be in the range of 0.04-5.14 mg / L, being below the permissible limits for Iraqi water (15 mg / L). Other values observed for phosphates were 0.004-0.085 mg / L. Overall, the results demonstrated different effects on the properties of Gharaf  River water during and after the floodplain period.

Polymer-Graphene Nanoassemblies and their Applications in Cancer Theranostics

2020 ◽  
Vol 20 (11) ◽  
pp. 1340-1351 ◽  
Author(s):  
Ponnurengam M. Sivakumar ◽  
Matin Islami ◽  
Ali Zarrabi ◽  
Arezoo Khosravi ◽  
Shohreh Peimanfard
Keyword(s):  
Mechanical Stability ◽  
Chemical Properties ◽  
The Other ◽  
Hydrophilic Polymer ◽  
Two Dimensional ◽  
Normal Tissues ◽  
Physical Chemical ◽  
Anti Cancer ◽  
Good Biocompatibility ◽  
Cancer Theranostics

Background and objective: Graphene-based nanomaterials have received increasing attention due to their unique physical-chemical properties including two-dimensional planar structure, large surface area, chemical and mechanical stability, superconductivity and good biocompatibility. On the other hand, graphene-based nanomaterials have been explored as theranostics agents, the combination of therapeutics and diagnostics. In recent years, grafting hydrophilic polymer moieties have been introduced as an efficient approach to improve the properties of graphene-based nanomaterials and obtain new nanoassemblies for cancer therapy. Methods and results: This review would illustrate biodistribution, cellular uptake and toxicity of polymergraphene nanoassemblies and summarize part of successes achieved in cancer treatment using such nanoassemblies. Conclusion: The observations showed successful targeting functionality of the polymer-GO conjugations and demonstrated a reduction of the side effects of anti-cancer drugs for normal tissues.

Preparation of Glass-Ceramics Using Molybdenum Tailings

2011 ◽  
Vol 284-286 ◽  
pp. 1431-1434 ◽  
Author(s):  
Jin Rui Zhang ◽  
Ru Wang
Keyword(s):  
Heat Treatment ◽  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Crystalline Phase ◽  
Glass Ceramics ◽  
Chemical Properties ◽  
The Other ◽  
Raw Material ◽  
Physical Chemical ◽  
Nucleation Agents

In order to utilization the molybdenum tailings which be deposited in large quantities. Test used it to prepare glass-ceramics as main raw material, TiO2 as nucleation agents and CaO-Al2O3-SiO2 system and wollastonite as the principal crystalline phase. Heat treatment system of glass-ceramics was based on the differential thermal analysis. The crystalline phase, microstructure and characteristics of glass-ceramics were analysis by XRD, SEM and physical, chemical properties test. The result shows that the performance of glass-ceramics was superior to the other types of building decoration stone.

scholarly journals Integrating ESG Analysis into Smart Beta Strategies

2020 ◽  
Vol 12 (22) ◽  
pp. 9351
Author(s):  
Federica Ielasi ◽  
Paolo Ceccherini ◽  
Pietro Zito
Keyword(s):  
Investment Analysis ◽  
The Other ◽  
Portfolio Rebalancing ◽  
A Value ◽  
Ex Post ◽  
The Us ◽  
Ex Ante ◽  
The Impact ◽  
Smart Beta ◽  
Increase In Risk

Smart beta strategy is an increasingly frequent approach to investment analysis for portfolio selection and optimization and it can be combined with environmental, social, and governance (ESG) considerations. In order to verify the impact of the integration between ESG and smart beta analysis, first we apply a portfolio rebalancing based on ESG scores on securities selected according to different smart beta strategies (ex-post ESG rebalancing approach). Secondly, we apply different smart beta approaches to sustainable portfolios, screened according to the issuers’ ESG scores (ex-ante ESG screening approach). We find that ESG rebalancing and screening are able to impact both on return and risk statistics, but with a different level of efficiency for each smart beta strategy. ESG rebalancing proves to be particularly efficient when it is applied to a “Value” portfolio. On the other hand, when smart beta is applied to ESG-screened portfolios, “Growth” is the strategy which shows the highest increase in risk-adjusted performance, particularly in the US. Minimum volatility proves to be the most efficient smart beta strategy for sustainable portfolios. In general, the increase in the level of sustainability does not deteriorate the risk-adjusted performances of most smart beta strategies.

scholarly journals Penentuan Pusat Pertumbuhan Ekonomi Dalam Pengembangan Wilayah Di Eks. Karesidenan Besuki

2017 ◽  
Vol 4 (1) ◽  
pp. 109
Author(s):  
Nindya Aditia Putra ◽  
Badjuri Badjuri ◽  
Hanim Anifatul
Keyword(s):  
Economic Growth ◽  
Competitive Advantage ◽  
Agricultural Sector ◽  
Secondary Data ◽  
The Other ◽  
Clean Water ◽  
Analysis Method ◽  
Growth Center ◽  
The Impact ◽  
Scalogram Analysis

Research conducted aims to: 1)the know which area the center of growth in ex besuki residency , 2)the know what the sectorhave a competitive advantage in each area , 3)the know the impact of a multiplier income of the sector have a competitiveadvantage in each area , 4) to know a growth center in hinterland areas. An analysis method that used a method of quantitativeanalysis by using secondary data obtained from the Statistic Indonesia and other institutions needed. The analysis is useanalysis scalogram, analysis of shift share classic, and gravitation analysis. The analysis showed Jember district emerged as agrowth center in the region of ex Besuki residency because it has the largest number of facilities .The agricultural sector intosectors which it has value Cij ( competitive advantage ) highest among the other sectors in the four districts in ex Besukiresidency. The multiplier income calculations showed the electricty, gas and clean water have a multiplier largest income inJember district, sector buildings in Banyuwangi district, the electricty, gas and clean water in Bondowoso district, the otherservice sector in Situbondo district. While calculation gravitation analysis showed of the economic growth centers have amagnet for the region of hinterlandnya because it has value Tij ( attractiveness ) that also.

scholarly journals The Impact of Torrefaction Temperature on the Physical-Chemical Properties of Residual Exotic Fruit (Avocado, Mango, Lychee) Seeds

Energies ◽  
2022 ◽  
Vol 15 (2) ◽  
pp. 612
Author(s):  
Arkadiusz Dyjakon ◽  
Łukasz Sobol ◽  
Tomasz Noszczyk ◽  
Jakub Mitręga
Keyword(s):  
Raw Materials ◽  
Chemical Properties ◽  
Point Of View ◽  
Energy Utilization ◽  
Heating Value ◽  
Physical Chemical ◽  
Food Processing Sector ◽  
Exotic Fruits ◽  
The Impact ◽  
Significant Mass Loss

A large portion of food loss and waste (FSL) is comprised of seeds and stones. Exotic fruits such as mangoes, lychees and avocados, in which the seeds account for a significant part of the weight and volume of the entire product, are most affected by this problem. The seeds contain a large quantity of polyphenols and essential nutrients, which makes them a good material for extraction. However, conventional extraction techniques are considered time-consuming, and therefore significantly limit their use on an industrial scale. An alternative method of managing the seeds may be their energy utilization. In this study, torrefaction was proposed as a method for the valorization of exotic fruit seeds (mango, lychee, avocado). Thus, the influence of torrefaction temperature (200–300 °C) on the physical-chemical properties of substrates was investigated. The obtained results revealed that, in relation to the unprocessed raw materials, the torreficates are characterized by improved hydrophobic properties (all materials are classified as extremely hydrophobic), higher heating value (at 300 °C the values increased from 17,789 to 24,842 kJ∙kg−1 for mango, from 18,582 to 26,513 kJ∙kg−1 for avocado, and from 18,584 to 25,241 kJ∙kg−1 for lychee), higher fixed carbon content (which changed from 7.87–15.38% to 20.74–32.47%), and significant mass loss, by 50–60%. However, as a side effect of thermal treatment, an increase in ash content (approx. 2–3 times but still less than in coal) was observed. Therefore, the torreficates may be competitive with coal. The possibility of using residues from the food processing sector as a substrate for energy purposes is important from the point of view of environment protection and is a part of the functioning of the circular economy.

scholarly journals The Impact of Polluting Sources on the Physical-Chemical Properties of Water in the Curved River in Kosovo

2020 ◽  
Vol 9 (2) ◽  
pp. 368-374
Keyword(s):  
Research Work ◽  
Ecological Status ◽  
Chemical Properties ◽  
Industrial Area ◽  
Chemical Pollution ◽  
Industrial Zone ◽  
Chemical Parameters ◽  
River Waters ◽  
Physical Chemical ◽  
The Impact

It has already become a tradition to research the pollution with heavy metals of surface and groundwater. Very few studies have been done to assess the ecological status of rivers in Kosovo, based on their assessment through physical-chemical parameters, such as: pH, OT, BOD5, COD, N-NH4, NO3-, NT, PO4-P, PT. Although it is known that physical-chemical pollution of surface water is present in the flow of rivers, since in the impossibility of setting up plants for the treatment of industrial and urban wastewater, in all cases their discharge is done in a way free and uncontrolled. Therefore, our object of study consists in the real evidence of physical-chemical pollution of the waters of the Curved River (Kriva Reka), a segment of which crosses the industrial area of ​​the Artana Mine, located in the northeastern part of Kosovo. During the research work we have identified six monitoring points: M1 and M6 represent the river waters outside the industrial zone, while the other four monitoring points reflect the industrial discharge waters and the polluted river waters in the industrial zone. Classical and instrumental methods of analytical chemistry have been applied to determine physical-chemical parameters. The results obtained after the analysis of water samples give the values of physical-chemical parameters, based on which we estimate that the Curved River is characterized by poor ecological status.

scholarly journals Design of Monitoring of Turbidity and Dissolved Solids in River Water

2019 ◽  
Vol 8 (1) ◽  
pp. 41-47
Author(s):  
Pambudi Prasetyo
Keyword(s):  
River Water ◽  
Public Awareness ◽  
Human Growth ◽  
Clean Water ◽  
Need For Treatment ◽  
Living Things ◽  
Solids Content ◽  
The Impact ◽  
Monitoring Devices ◽  
The Internet Of Things

Water is a very basic need in the survival of all living things. The limited amount of clean water and the increasing human growth rate in Indonesia are slowly starting to cause a clean water crisis. Apart from the quantity, the fresh water quality is getting worse. The increasing need is directly proportional to the increasing exploitation of springs, but in fact it's inversely proportional to public awareness of the need for treatment, care and monitoring of river conditions, especially for people in urban, industrial and densely populated areas. In this research, it is proposed a design design for river water monitoring devices using the internet of things method with a media monitor and a public website-based interface that can be accessed by anyone who wants to know about updated river condition information. There are two observation parameters in this study, including dissolved liquid solids content (PPM) and liquid turbidity (NTU), which changes will be observed with the river prototype media in a paralon pipeline. The data received by the sensor is then processed by the Wemos D1 microcontroller and sent to an online database to be displayed in the form of graphs or data records or tables. From the implementation of this research, it is hoped that the community around the watershed can obtain information about the impact of activities around the river on water conditions and quality. With that, it's hoped that the community will have more awareness of the importance of togetherness in protecting the surrounding rivers.

scholarly journals Effect of Chitosan, Clay, and CMC on Physicochemical Properties of Bioplastic from Banana Corm with Glycerol.

2021 ◽  
Vol 10 (1) ◽  
pp. 31-35
Author(s):  
Agung Sugiharto ◽  
Adilla Syarifa ◽  
Nindita Handayani ◽  
Rizky Mahendra
Keyword(s):  
Tensile Strength ◽  
Physicochemical Properties ◽  
Physical Properties ◽  
Organic Material ◽  
Chemical Properties ◽  
The Other ◽  
Physical Chemical ◽  
Composition Variation ◽  
Elongation Percentage

Bioplactic from banana corm and glycerol has been studied in this research. In addition, the physical chemical properties of it has been improved by adding chitosan, clay and CMC as filler and glycerol as plasticizer. Plastic that produced form organic material such as starch usually has poor properties in physical and mechanical. Composition variation of chitosan, clay and CMC as filler then combined by variation of glycerol as plasticizer have produced significant improve of the bioplastic physical properties. Properties of the bioplastic that studied in this research was focused to biodegradation, elongation, and tensile strength. The addition of fillers and plasticizers is carried out to produce a better bioplastics. This study used 3 variations of the filler composition : 4, 5, and 6 grams and 2 variations of the plasticizer composition: 1 ml and 2 ml. The bioplastics that produced were tested for tensile strength, elongation, and biodegradation of the soil for 7 days. The best tensile strength results is 8.43 MPa for bioplastic that using CMC fillers. On the other side, the best elongation percentage is 9.87% for bioplastic which using CMC fillers. The bioplastic that added Clay as filler can be degraded up to 100% in 7 days.

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