Open Access Short Research Articles

Technology Obtaining Composites for Processing of Metals on the Base of Local Raw Materials

A. B. Abdulhaev, G. A. Doliev, J. F. Umaraliev, O. G. Abdullaev, S. B. Mamajonov, Bokhodir E. Sultonov

Current Journal of Applied Science and Technology, Page 48-53
DOI: 10.9734/cjast/2021/v40i2731526

Obtaining cheap and high-quality dry lubricant compositions based on local raw materials for stretching wires in the technology of obtaining small-sized wires from large-diameter wires. Dry lubricant obtained on the basis of local cheese is used for processing and drawing metals prepared from the following components: sodium soap, natriy sulphate Na2SO4 - 5.0-20.0; bura Na2B4O7·10H2O - 0.1-5.0 and talc. At present, the pilot-test work was carried out at a private company "DAVR METALL" in Namangan.

Open Access Original Research Article

Determination and Removal of Phosphate and Nitrate from the Ground and Surface Water at the Three Counties of Guyana

Joylyn Anita Conway, Brij Bhushan Tewari

Current Journal of Applied Science and Technology, Page 1-20
DOI: 10.9734/cjast/2021/v40i2731522

Standard analytical procedures that are based on colourimetry facilitated the determination of PO43- and NO3- in the ground and surface waters from the three (3) counties of Guyana. Phosphates and nitrates beyond their permissible levels in natural waters can pose significant threats to the aquatic environment, its inhabitants, and the health of humans and terrestrial animals. For this reason, this study aims to investigate the use of metal (nickel, cadmium, cobalt) ferrocyanides (octahedral complexes that facilitate adsorption of anions primarily on its two divalent transitional metals) as adsorbents to facilitate the removal of the aforementioned anions. Results revealed that nickel ferrocyanide is the most effective adsorbent for treating ground and surface waters that contain high levels of PO43-, while it was also the most effective adsorbent for treating surface waters that contained NO3-. Fixed volumes of water samples were treated with 50 mg, 100 mg, and 150 mg of the adsorbent. The correlation coefficient computations revealed that they were instances of both positive and negative correlations, which implied that increasing adsorbent dosage resulted in increased adsorption and other instances decreased adsorption, respectively. This occurrence went against literature, possible reasons for this are explained in detail within the discussion portion of the manuscript. Adsorption isotherms and Langmuir plots were used to facilitate adsorption studies, in various instances, the generic appearance of these isotherms was not observed, possible reasons for this occurrence are also explained in more detail within the article. Based on observations within the article, the use of cobalt ferrocyanide for treating groundwater and removing PO43- is not recommended, while cadmium ferrocyanide is not recommended to be used to facilitate the removal of NO3-, due to the possible formation of Co3(PO4)2 and Cd(NO3)2, respectively, which consequently affected the results. Technologies like those studied in this research project should be explored and studied more in-depth (particularly with regards to the stability of the adsorbents) with regards to the treating of ground and surface water supplies, to facilitate the removal of PO43- and NO3-, since the results observed, though on a small scale, can be seen to move us closer towards a green and sustainable environment, inclusive of safeguarding the health of the Worlds’ people and expanding the scope of cost-effective and simple methods that aid in the removal of anions from natural waters.

Open Access Original Research Article

Enhancement of Vehicle Dynamics with Application of H Arm at Rear Suspension System

Kalyan Pavan Kumar, Charita Vemula, B. Sai Baba

Current Journal of Applied Science and Technology, Page 28-47
DOI: 10.9734/cjast/2021/v40i2731525

The conventional design and manufacturing of rear suspension system in All terrain Vehicles were  Double wishbone, Semi trailing arm, Mcpherson strut and torsion bar but to overcome the adverse effects such as  wheel wobbling, Uncontrolled Toe and power losses from transmission. So by introducing a H-arm suspension system at the rear end of the vehicle can improve the performance of the vehicle by keeping it stable and able to sustain all the incoming loads from the ground and provides a comfortable drive and by maintaining a constant Toe which will improve the transmission. The primary objective of the suspension system in the ATV is to maximise the contact between the tires and the road surface, providing good handling and steering stability, evenly distributed weight throughout the vehicle and ensuring riders safety also comfort by absorbing the shocks from the terrain. Ansys solver is used for analysis, lotus shark used for the simulation and the modelling is done by using Solidworks 19. Fabrication of the system was done according to the Design values, run- virtual compliance test is performed for checking the vehicle dynamics.

Open Access Original Research Article

Evaluation of the Variability of Drinking Water Quality within Bamenda Metropolis, North West Region, Cameroon

Gordin Bah Ndah Anyang, Ngwa Martin Ngwabie, Samuel Ndonwi Ayonghe

Current Journal of Applied Science and Technology, Page 54-70
DOI: 10.9734/cjast/2021/v40i2731527

Aims: The quality of drinking water within Bamenda metropolis was evaluated for it variability and suitability.

Place and Duration of Study: Twenty-two (22) samples were collected (11 in the dry season and 11 in the wet season) from 4 main drinking water network in Bamenda (public, community, non-distributed and private network).

Methodology: The samples were tested for physico-chemical and bacteriological parameters. American Society for Testing and Materials (ASTM) and Norme Française (NF) were the methods used to determine the organoleptic, natural structure, undesirable, toxic and bacteriological parameters of the different samples. Water Quality Index (WQI), Na/Cl ratio and hydrochemical facies were deduced from the physiochemical parameters.

Results: The findings indicate that water quality in Bamenda varies with seasons, location and sources. The pH of the study area was acidic with a higher dry season mean percentage of 52.6% against 47.4% for wet season. Turbidity showed amean percentage of 75: 25% for wet and dry season respectively. Wet season cations, showed abundance Ca2+ and Mg2+ while dry season showed Ca2+ and Na+. Bicarbonate and Chloride were the most abundant anions in both seasons but varied with seasonal concentrations. Bacteriological analysis identified faecal coliform in 3 dry season samples. Hydrochemical facies showed dominant of magnesium and bicarbonate for wet season samples while Sodium and Chlorine were dominant for dry season samples. Water Quality Index (WQI) ranged from 72 to 94 for the wet season and 84 to 100 for dry season.

Conclusion: Though the results for WQI were within the acceptable standard for drinking water, pH for 21 samples and turbidity of 6 samples were not within the Cameroon nor World Health Organisation (WHO) Standard for drinking water. It is important that drinking water be tested seasonally to ascertain the quality being consumed.

Open Access Review Article

Bactericidal Potential of Local Medicinal Plants of Kashmir Valley in Fishes: A Review

Inain Jaies, Feroz Ahmad Shah, Shabir Ahmad Dar, Syed Shariq Nazir Qadiri, Asifa Wali, Raj Kumar

Current Journal of Applied Science and Technology, Page 21-27
DOI: 10.9734/cjast/2021/v40i2731524

Bacterial diseases in fishes create one of the alarming situations that render significant loss to the fishing industries and aquacultural farm units worldwide. Various drugs have been formulated, standardized, and used in the industry to combat bacterial infections. However, non-judicious drugs can lead to pharmacological problems and induction of toxicity in fishes, leaving them less suitable for human consumption. These drugs can be supplemented with the natural herb plants having antibacterial activities, although they cannot be used solely to curb the menace. Therefore, the review put forth an idea, which plant herbs can be used as antibacterial drugs in fishes.