In the recent times with the rapid development of technology there is also a need for a secure and safe environment for every one of us. With the use of microcontrollers specific problems can be addressed in many different ways and the solutions can be unique to different individual circumstances. This paper is an attempt to understand how to make a home of an individual to have a secured and safe way to authorize access to a room or into a vault. This work is developed on the basis of UART communication between the microcontroller (MSP430) and the processor of the Personal Computer. The major feature of MSP430 is that it enters into a low power mode when interrupt sub-routines are utilized. This project can also be extended into different types of securing activities. There can also be added in Bank lockers, hotel security services, auto-mobile security and other safety features.

Keywords: MSP 430 Launch Pad, UART Communication, Smart Home, Password based Lockingsystem.

[1]. https://onlinecourses.nptel.ac.in/noc20_ee98/preview
[2]. https://www.ti.com/microcontrollers-mcus-processors/microcontrollers/msp430- micrcontrollers/overview.html
[3]. https://gist.github.com/yasser-khan/4404813
[4]. https://circuitdigest.com/microcontroller-projects/getting-started-with-msp430- using- code-composer-studio
[5]. https://wtfleming.github.io/2013/11/10/msp430-blink/

Quality assurance models are an essential factor for the successful completion of all activities. There is a growing global interest in identifying quality models, both in general and in education. The purpose of this paper is to analyze the characteristic elements of total quality management (TQM). TQM represents an integrated effort meant to improve the quality of each level of the organization. The historical evolution of the total quality management comprises four steps: quality inspections, quality control, quality assurance and, finally, the TQM process itself. Quality is obvious in human actions. The goal of the Six Sigma strategy is to increase an organization's profit by eliminating variability, reducing the number of defects and eliminating losses, which removes the consumer and harms the organization. The term Six Sigma is derived from the field of statistics, because σ represents the standard deviation. This model helps organizations improve the quality of their products and services to meet customer needs.........

Keywords: Quality assurance; Quality management; Models; Management; Performance.

[1]. Basu, R.(2004). Implementing Quality, A Practical Guide to Tools and Techniques. Cengage Learning EMEA.

[2]. Casas, A. M. (2011). Total Quality Management, Quality Culture, Leadership and Motivation. Dissertation thesis: Polytechnic University of Milan.
[3]. Condrea, E.(2006).Quality management in production, trade and services. Contanţa, Ex Ponto.
[4]. Crosby, P.B. (1979).Quality Is Free: The Art of Making Quality Certain. McGraw-Hill, New York.
[5]. Dehwari, M. (2013).Designing a Comprehensive System Model for Iran's Light Industries. Master's thesis. Zahedan, Nikbakht University

Heavy metal uptake by plant tissues was investigated by planting selected vegetable plants (hyper-accumulant) in potted soils from the different dumpsites in Makurdi andnurtured by necessary agronomic and irrigation practices to maturity. At maturity the plants were harvested whole, dried and blended in the laboratory for analysis for heavy metals. The metals uptake by selected hyper-accumulant, concentration left in the soil after extraction by hyper-accumulant,were determined. Amaranthus (white seed) removed up to 39.5% of Zinc mean concentration from Under bridge dumpsite. Amaranthus (Black) removed up to 48.5% of Copper and 39.9% of lead mean concentration from K/Ala street dumpsite. Pumpkin was able to remove up to 48% about 40% Arsenic and about 61% of chromium's Naka Road dumpsite........

Keywords; Soil-Plant Media, Heavy Metals, Hyperaccumulation, Vegetable crops, MSW Dumpsites

[1]. Bieby V. T; Siti R.S.A; Hassan B; M I; Nurina A; and Muhammad M(2011).A Review on Heavy Metals (As, Pb, and Hg) Uptake by Plants through Phytoremediation.International Journal of Chemical Engineering /Vol. 2011 /
[2]. Burken J. G. and. Schnoor, J. L (1996)"Phytoremediation: plant uptake of atrazine and role of root exudates," Journal of Environmental Engineering, vol. 122 (11): 958–963,
[3]. Cho-Ruk, K.Kurukote, J.Supprung, P. and Vetayasuporn, S. (2006) "Perennial plants in the phytoremediation of lead-contaminated soils," Biotechnology, vol.5 (1); 1–4. [4]. Das, P .K (2018). "Phytoremediation and Nanoremediation : Emerging Techniques for Treatment of Acid Mine Drainage Water". Defence Life Science Journal. 3(2): 190–196. [5]. Jaishankar M; Mathew B.B; Shah M.S and Gowda K.R.S.(2014); Biosorption of Few Heavy Metal Ions Using Agricultural Wastes. Journal of Environment Pollution and Human Health. 2(1):1–6.

This paper describes the design and prototyping of a low-cost portable mechanical ventilator for use in mass casualty cases and resource-poor environments. The ventilator delivers breaths by compressing a conventional ambu bag with a pivoting cam arm, eliminating the need for a human operator for the ambu bag. An initial prototype is driven by an electric motor powered by a 12 VDC battery and features an adjustable tidal volume up to a maximum of 750 ml. Tidal volume and number of breaths per minute are set as per the default conditions. Future iterations of the device will include a controllable inspiration to expiration time ratio, a pressure relief valve, an LCD screen and an alarm to indicate over pressurization of the system. Through this prototype, the strategy of automated ambu bag compression is proven to be a viable option to achieve low-cost, low-power portable ventilator technology that provides essential ventilator features at a fraction of the cost of existing technology.

Keywords: Ambu Bag, Arduino, Blood Oxygen Sensor, Low-Cost, Low-Power, Portable and Automatic

[1]. A low oxygen consumption pneumatic ventilator for emergency construction during a respiratory failure pandemic, D. Williams S. Flory R. King M. Thornton J. Dingley, - 2008, DOI:10.1111/j.13652044.2009.06207.x
[2]. Text Book: "Medical Ventilator System Basics", Author: Yuan Lei
[3]. Design and Prototyping of a Low-Cost Portable Mechanical Ventilator, by Abdul Mohsen Al Husseini1,Heon Ju Lee1, Justin Negrete1, Stephen Powelson1, Amelia Servi1, Alexander Slocum1, Jussi Saukkonen, -2010 at MIT, DOI:10.1115/1.3442790
[4]. Klein KR, Nagel NE (2007) Mass medical evacuation: Hurricane Katrina and nursing experiences at the New Orleans airport. Disaster Manag Response. 2007 Apr-Jun;5(2):56-61
[5]. Kerechanin CW, Cytcgusm PN, Vincent JA, Smith DG, Wenstrand DS (2004) Development of Field Portable Ventilator Systems for Domestic and Military Emergency Medical Response, John Hopkins Apl. Tech. Digest Vol 25, Number 3

Mahanadi River is said to be the lifeline of the state Odisha, as the people use the water extensively, without sufficient and reliable information about water qualities and pollution status. The purpose of this study is to evaluate the water quality of the river and to analyze the suitability for drinking, agricultural and industrial uses. Most of the agriculture, industry and all-round developments are due to rich water resource potential of this river. This is why this study on the Mahanadi River is extremely important for the region. For this study, samples from 21 sampling stations over a period of 14 years were collected during low flow periods (between June – August) and high flow periods (between November – January) and multivariate techniques like factor analysis, Pearson correlation analysis and cluster analysis is being applied to surface water quality data sets obtained during two different hydrological periods........

Keywords: Pearson Correlation, Factor analysis, Cluster analysis, Runoff, Buffering capacity, Water quality.

[1]. APHA-AWWA-WPCF, 1985. Standard Methods for the Examination of Water and Waste Water. American Public Health Association, Washington, DC.
[2]. Almasri, M. L. and J. J. Kaluarachchi (2004). Assessment and management of long-term nitrate pollution of groundwater in agriculture-domonated watersheds. Journal of Hydrology, I295 (1-4): 225-245.
[3]. Abbasi, S. A. and P.C. Nipaney (1995). An assessment of drinking water quality of the open wells in Malappuram coast, Kerala. Poll Res. 14 (3): 313-316.
[4]. Bishwanath, G. and N. Banerjee, 2004. Impact of informal regulation of pollution on water quality in rivers in India, Journal of Environmental Management, 73: 117-130.
[5]. Banerjee S.K., M. Banerjee and K.M. Agarwal (1999). Study of Tikara and Brahmani river ecosystems. Env Eco, 17(2): 296-305.

In order to achieve a better understanding of the nature of the factors influencing surface water composition as well as to specify them quantitatively, various techniques were used to evaluate temporal and spatial variations in and to interpret large and complex water quality data sets collected from the Baitarani River Basin. It constitutes a dump of industrial and domestic rejections which contribute to the degradation of water quality. The objective of this study is to evaluate the water quality of the river and to analyze the suitability for drinking, agricultural and industrial uses. Surface water samples were analyzed for their physical and chemical properties using standard laboratory methods. Physical and chemical parameters such as PH, Turbidity, TDS, TSS, EC, DO, Alkalinity.......

Keywords: Baitarani River, sodium absorption ratio, US Salinity diagram, Piper's trilinear diagram, Water Quality Index

[1]. Alexakis D (2011) Assessment of water quality in the Messolonghi- Etoliko and Neochorio region (West Greece) using hydro- chemical and statistical analysis methods. Environ Monit Assess 182:397–413
[2]. Ayers RS, Westcot DW (1985) Water quality for agriculture. FAO Irrigation and Drainage Paper No. (29), Rev. (1), U.N. Food and Agriculture Organization, Rome
[3]. Bouksila F, Bahri A, Berndtsson R, Persson R, Rozema J, Van der Zee S (2013) Assessment of soil salinization risks under irrigation with brackish water in semiarid Tunisia. Environ Exp Bot 92:176–185
[4]. Bouraoui F, Benabdallah S, Jrad A, Bidoglio G (2005) Application of the SWAT model on the Medjerda river basin (Tunisia). Phys Chem Earth 30:497–507
[5]. Chabchoub MA (2011) Evaluation des systems de production me ´diterrane ´ens dans un context de changement climatique. Cas de la basse valle ´e de la Medjerda en Tunisie, Institut Agronomique Me ´diterrane ´en de Montpellier. Master of Science CIHEAM-IAMM 113:31–36

In order to accurately determine the polymer concentration in the produced liquid of gel profile control and flooding well, the standard curves of polymer solution and polymer gel are drawn by using the method of fixed nitrogen. The standard curve is optimized by the physical simulation results of the polymer concentration in the produced liquid. The sixteen production wells in the gel test area of Daqing Oilfield are extracted randomly, and the fixed nitrogen and starch cadmium iodide method are used to detect the polymer concentration in the produced liquid. The error of test results is analyzed and the corresponding empirical formula is fitted. The research results provide an accurate and effective method for the detection of polymer concentration in the gel produced liquid........

Keywords: polymer concentration; polymer gel; fixed nitrogen method; error analysis; empirical formula The detection of polymer concentration in the produced liquid plays an important role in dynamically monitoring the production process and evaluating the gel flooding effect........

[1]. Jongyun K, Myunggeun S, Jong D. Zeta potential of nanobubbles generated by ultrasonication in aqueous alkyl polyglycoside solutions [J]. Journal of Colloid and Interface Science, 2000, (233): 285-291.
[2]. SHU Lian, LIU Jianxin, LV Xin, et al. Measurement optimization of polymer concentration of polyacrymide by the starch-cadmium iodine method[J]. Applied Chemical Industry, 2010, 39(11): 1766-1782.
[3]. TANG Hengzhi, YE Zhongbin, CHEN Hong, et al. Application of derivative ultraviolet spectrometry to measurement of polymer flooding agent concentration [J]. Oil Drilling and Production Technology, 2008, 30(3): 115-119.
[4]. FENTON B M, WILSON D W, COKELET G R. Analysis of the effects of mearsured white blood cell entrance times on hemodynamics in a computer model of microvascular bed[J]. Pflug Arch Eur J Physiol, 1985, 403: 103-126.
[5]. FENG Ping. An Investigation on Quality Monitoring of Cr3+ Crosslinkers for Aqueous Polymer Gels[J]. Oilfield Chemistry, 2003, 20(1): 43-46.

In this study, a mechanical backrest is designed and fabricated to aid the comfortability of the user while performing maintenance and repair works under vehicles, trucks or machineries . The frame of the equipment is made of metal with a length of 50cm, width 40cm and thickness of 3mm cut, joined and welded using arc welding process. The materials used are metal bars, flexible tube, cloth peg, caster wheels and a flash light to enable the user work in dark areas.A cushioned foam is is attached to the equipment to ensure an effective back rest. A computer aided design of parts and a strength analysis was also performed on the caster wheels using solid work simulation software, also a 90kg distributed load was applied impacting on a uniform load of 22.5kg evenly on four wheels and the results from the simulation gave the maximum von mises stress as 10.4NM/S. The performance also showed that the design objectives were met in terms of static and dynamic stability of the backrest which was fabricated at low cost of 21,800 naira

Keywords: Backrest, frame, castors, Design specifications, Automotive

[1]. Machine Elements in Mechanical Design, 4th edition, Robert L. Mott
[2]. Applied Strength of Materials, 5th edition, Robert L. Mott
[3]. Machines & Mechanisms: Applied Kinematic Analysis, 3rd edition, David H. Myszka
[4]. Machinery's Handbook, 28th Edition
[5]. Wonkeedonkeetools.co.uk/car-mechanical backrest