scholarly journals Assessment of Physicochemical and Microbiological Quality of Table Water Sold in School Campuses of the University of Port Harcourt, Nigeria

2021 ◽  
pp. 22-33
Author(s):  
Stephenson Danagogo Lawson ◽  
Abiye Anthony Ibiene ◽  
Victoria Amadi ◽  
Stella Ogbonnie Enyinnaya ◽  
Lasbry Chidi Nnodim ◽  
...  
Keyword(s):  
Water Quality ◽  
Biochemical Characterization ◽  
Microbiological Quality ◽  
Control Measures ◽  
Soluble Solids ◽  
Port Harcourt ◽  
The University ◽  
And Control ◽  
Water Borne

Water is the elixir of life which is essential for proper metabolic processes to take place. The quest for cheap and readily available source of potable water has led to the emergence of sachet and bottle water which the sale and consumption continue to grow astronomically and rapidly in most countries of the world. This study was aimed at assessing the microbial and physicochemical water quality of table water sold on School campuses. Standard microbiological procedures were used to isolate and identify various microbial genera associated with the water samples using morphological, microscopic and biochemical characterization method. The bacterial genera identified were Escherichia sp., Streptococcus sp., Micrococcus sp., Vibrio cholera., Staphylococcus sp. and Bacillus sp. with Choba campus having the highest microbial contamination of packaged water. However, the results of the physicochemical properties from this study were all below the WHO recommended limits. The temperature and pH ranged between 26-27°C and 6.98-7.08, respectively. The values of the electrical conductivity ranged from 0.080 to 0.150 µs/cm; turbidity ranged between 0.40-1.40 NTU; chloride ranged between 1.187-2.103 mg/l, nitrate was within the range of 0.01 to 0.14 mg/l; BOD ranged from 0.02-0.04 mg/l, COD was between 0.00-0.08 mg/l and the total soluble solids were between the ranges of 0.04-0.10 mg/l. Therefore, this study suggests the improvement of water-borne disease preventive and control measures, and monitoring of water quality by the regulatory agencies to ensure good manufacturing practices by the water bottling companies which will result in reduction of health hazards associated with water borne diseases.

scholarly journals Dark-chilling of Seedlings Affects Initiation and Morphology of Broccoli Inflorescence

2013 ◽  
Vol 41 (1) ◽  
pp. 213 ◽  
Author(s):  
Aneta GRABOWSKA ◽  
Agnieszka SĘKARA ◽  
Monika BIENIASZ ◽  
Edward KUNICKI ◽  
Andrzej KALISZ
Keyword(s):  
Microscopic Analysis ◽  
Flower Buds ◽  
Uniform Size ◽  
Sowing Time ◽  
Regular Form ◽  
Plant Ontogeny ◽  
Branching Angle ◽  
The University ◽  
And Control

The constant supply of broccoli heads for a vegetable market can be kept by the differentiation of sowing time and the age of seedlings. Dark-chilling of young seedlings can also modify the time of transplanting, subsequent plant development, yield and inflorescence quality. The aim of the present study was to analyze the influence of seedling dark-chilling on the inflorescence initiation and the morphological quality of broccoli heads. The experiment was carried out at the University of Agriculture in Krakow (South Poland) in the years 2009 and 2010, with broccoli (Brassica oleracea L. var. italica Plenck) medium late cultivar ‘Monaco’ F1. The examined factors were the age of seedlings (4-, 6-, 8-, and 10-week-old) and dark-chilling (2°C/2 weeks and non-chilled control). Microscopic analysis of the apex sections was performed to determine the time of the inflorescence differentiation in chilled and non-chilled seedlings of different age. Chosen morphological features of the mature heads were also described as depended on age and chilling of seedlings. The inflorescence initiation was observed between 4 and 6 week of the plant ontogeny. Especially 4-week-old seedlings, chilled by two weeks, were more advanced in the generative development in comparison to non-chilled control. Low temperature applied in the seedling stage did not cause the head buttoning. Inflorescences developed by broccoli planted from 4 and 6-week-old seedlings, both chilled and control, were characterized by the best visual quality, determined by a convex head shape, tight branching angle, small and uniform size and regular form of flower buds. Chilling of oldest, 8- and 10-week-old seedlings negatively affected the inflorescence quality, through planed and spread shape of heads and non-uniform shape of flower buds.

scholarly journals SQoF-WEAR Project. The Use of Wearable Devices to Identify the Impact of Stress on Workers’ Quality of Life

2021 ◽  
Vol 7 (1) ◽  
pp. 25
Author(s):  
Patricia Concheiro-Moscoso ◽  
Betania Groba ◽  
Sílvia Monteiro-Fonseca ◽  
Nereida Canosa ◽  
Cristina Queirós
Keyword(s):  
Quality Of Life ◽  
Public Health Problem ◽  
Wearable Devices ◽  
Assessment Tools ◽  
Self Report ◽  
Major Public Health Problem ◽  
The University ◽  
And Control ◽  
The Impact

(1) Background: Stress is a major public health problem due to its relevant health, social and economic repercussions. Moreover, stress can be associated with work; when stress increases over time, burnout can occur, an occupational phenomenon recognized by the WHO in 2019. There is interest in the use of wearable devices to monitor and control stressors and their influence on the condition of workers. This study aims to identify the level of job stress and its influence on the quality of life of workers. (2) Methods:This longitudinal study was carried out between the end of May and mid-July 2021. Three assessment tools along with a daily and a weekly questionnaire were computerized through the RedCap platform. The participants had to fill out the diary and weekly questionnaires and wear a Xiaomi Mi Band 5 during the project. (3) Results and discussion: Thirty-six workers from the University of Coruña and from the University of Porto participated in the project. This study promotes the awareness of workers regarding their work stress and the influence of this factor on their quality of life using physiological (e.g., activity, sleep, and heart rate) and psychological indicators (self-report questionnaires in different moments).

scholarly journals A Project-Centric Curriculum Design

2011 ◽  
Vol 2 (2) ◽  
pp. 25
Author(s):  
Dennis Drinka ◽  
Minnie Yi-Miin Yen
Keyword(s):  
Student Success ◽  
Learning Community ◽  
Curriculum Design ◽  
Lessons Learned ◽  
Team Projects ◽  
Individual Project ◽  
The University ◽  
And Control ◽  
Small Team

Student success was the motivation for evolving an individual project-based course into a project-centric curriculum. A one semester project was first extended across a sequence of three interrelated courses tied together through their focus on the success of small team projects that spanned those courses. This sequence was then targeted as the core of a redesign of the entire program curriculum focused on project and student success. Currently, the department is in the process of introducing the measurement of project success as a tool for assessment and control of the departments learning objectives. An overview of the design of this curriculum, lessons learned from developing it, and benefits of this type of curriculum in quality of student learning, community engagement, and reputation of the university, will be discussed.

scholarly journals CALIDAD MICROBIOLÓGICA DE Ulva lactuca Y Ulva clathrata (CHLOROPHYTA) DE LA COSTA DE LA PAZ, B.C.S., MÉXICO

2008 ◽  
Vol 23 (1-2) ◽  
pp. 35
Author(s):  
R. N. Águila-Ramírez ◽  
C. J. Hernández-Guerrero ◽  
S. Rodríguez-Astudillo ◽  
R. Guerrero-Caballero
Keyword(s):  
Water Quality ◽  
Microbiological Quality ◽  
Marine Organisms ◽  
Ulva Lactuca ◽  
Fecal Coliforms ◽  
Human Consumption ◽  
La Paz ◽  
Ecological Criteria ◽  
Ulva Clathrata

Microbiological quality of Ulva lactuca and Ulva clathrata (Chlorophyta) along the coastline of La Paz, B.C.S., México Total, fecal coliforms and the enterococcus group in Ulva lactuca and U. clathrata were measured in four localities of the coastline of La Paz, B.C.S, Mexico. Levels of fecal coliforms in water were below the standard of the Ecological Criteria of Water Quality (EC-WQ) which indicates a healthy La Paz inlet (below 200 MPN/100ml). Values of fecal coliforms in algae were below the NOM-031-SSA1-1993 levels determined for marine organisms destined for human consumption. These values were high only in few months. No enterococci were detected in the samples.

Effect of Polyolefin Film on the Quality of Kiwifruit with 1-MCP Treatment in Modified Atmosphere Packages

2011 ◽  
Vol 236-238 ◽  
pp. 2769-2772 ◽  
Author(s):  
Xi Hong Li ◽  
Cheng Jun Wang ◽  
Ai Li Wang ◽  
Yao Xiao ◽  
Yao Tang ◽  
...  
Keyword(s):  
Ascorbic Acid ◽  
Ascorbic Acid Content ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Modified Atmosphere ◽  
Flesh Firmness ◽  
Solids Concentration ◽  
And Control ◽  
Soluble Solids Concentration

Kiwifruit is very perishable especially at 20 °C. The quality of kiwifruit with 1-MCP treatment stored at 20 °C in modified packages was investigated. Three different polyolefin films, including 0.03mm thickness polyethylene (PE), 0.03mm and 0.05mm thickness poly (vinyl chloride) (PVC) films, were used as packaging films. Kiwifruit were fumigated with 1-MCP to delay ripeness and then packaged with the three films and control (air). O2 and CO2 concentrations in the packages, flesh firmness, soluble solids concentration (SSC), titratable acidity (TA) and ascorbic acid were measured. MAP treatments could postpone the increase of TTS, inhibit the reduction of TA, and avoid the decrease of flesh firmness. Kiwifruit packaged in 0.05mm PVC obtained 33% TA more than control fruit and approximate 25 % retention of initial firmness. However, MAP didn’t maintain more ascorbic acid content of kiwifruit. In conclusion, MAP using polyolefin films combination 1-MCP treatment, especially 0.05mm PVC, might be more effective for preserving the quality of kiwifruit.

scholarly journals Characteristics and Mechanism of the Environmental Capacity Changes in Haizhou Bay, Northern Jiangsu, China from 2006 to 2016

Water ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2990
Author(s):  
Lei Sun ◽  
Jing Wang ◽  
Haifeng Zhang ◽  
Min Xu
Keyword(s):  
Water Quality ◽  
Influencing Factor ◽  
Coastal Development ◽  
Future Research ◽  
Environmental Capacity ◽  
Haizhou Bay ◽  
Influencing Mechanism ◽  
Sea Reclamation ◽  
And Control

Haizhou Bay is an open bay located in northern Jiangsu Province, China. This study analyzes the changes in the coastline, coastal development, and water quality of Haizhou Bay between 2006 and 2016. The box model method and numerical simulation are adopted to calculate the environmental capacities of Haizhou Bay in 2006 and 2016, analyze changes to environmental capacity features, and assess the influencing factors over this period. The scenario analysis method is used to discuss the influencing mechanism and degree of influence of factors (e.g., the water quality difference inside and outside the bay, and sea reclamation) on the environmental capacity and calculate the contribution of each influencing factor. The changes in terrain triggered by sea reclamation and water quality from 2006 to 2016 reduced the total environmental capacity of Haizhou Bay, with an influencing ratio of 0.198:0.802. In other words, poorer water quality inside the bay reduces the environmental capacity by a degree of 4.05 times that of sea reclamation. This study can offer guidance on related future research aiming to protect the marine environment of Haizhou Bay and control the total amount of pollutants discharged into the sea.

Evaluation of BASINS/WinHSPF applicability for pollutant loading estimation for a Korean watershed

2006 ◽  
Vol 53 (1) ◽  
pp. 25-32 ◽  
Author(s):  
J.H. Jeon ◽  
C.G. Yoon ◽  
J.H. Ham ◽  
K.W. Jung
Keyword(s):  
Water Quality ◽  
Assessment Tool ◽  
Oxygen Demand ◽  
Water Quality Assessment ◽  
Control Measures ◽  
Effective Control ◽  
Watershed Model ◽  
Pollutant Loading ◽  
Model Efficiency

Applicability of a widely accepted watershed-based water quality assessment tool (BASINS) and its associated watershed model (WinHSPF) was evaluated on the Seamangeum watershed in Korea. The study site is the largest polder project area in Korea and its environmental quality has been debated for the last five years. BASINS was found to be a convenient and powerful tool for assessment of watershed characteristics, and provided various tools to delineate the watershed into land segments and river reaches, reclassify land use, and parameterize for WinHSPF simulation. Calibration results were satisfactory showing model efficiency over 0.80 for stream flow, temperature, and dissolved oxygen simulation, and model output for water quality constituents also reasonably matched the observed data. It was demonstrated that calibration with dry-day data for a relatively long period might be adequate to simulate hydrologic characteristics and water quality of the watershed with WinHSPF, and using parameters generated with BASINS for nonpoint source pollution simulation is suggested when enough wet-day monitoring data are not available. The unit-area load of biochemical oxygen demand, total nitrogen, and total phosphorus was 27.8, 48.2, and 4.3 kg/ha/yr, respectively. These values are within the expected range but on the high side of the reported values, which implies that effective control measures are required to protect water quality of the downstream reservoir. Overall, BASINS/WinHSPF was applicable and found to be a powerful tool in pollutant loading estimation from the watershed, and its use in Korea is recommended.

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