scholarly journals Assessment of Shallow Groundwater Purification Processes after the Construction of a Municipal Sewerage Network

Water ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 1946
Author(s):  
Tamás Mester ◽  
György Szabó ◽  
Dániel Balla
Keyword(s):  
Shallow Groundwater ◽  
Degree Of Contamination ◽  
Multivariate Statistical ◽  
Groundwater Levels ◽  
Groundwater Supply ◽  
Spatial Differences ◽  
Long Time ◽  
The Impact ◽  
Sewerage Network

In the present study, the impact of the construction of the sewerage network (2014) on groundwater quality was studied on the example of a middle-sized settlement in the Great Hungarian Plain and changes in water quality were assessed using GIS and multivariate statistical analysis. As a result of the pollution that has been going on for decades, the groundwater supply of the municipality has become heavily polluted. In the period before sewerage (2011–2013), clear spatial differences were shown in the degree of contamination in the area of the settlement: the degree of contamination increased in the direction of local groundwater flow. Based on our results, the construction of the sewerage network resulted in marked changes in the quality of groundwater wells. Our studies showed a clear decrease in the concentrations of inorganic pollutants (NH4+, NO2−, NO3−, PO43−). In the fifth year of the post-sewerage period (2019), the clear spatial difference between wells was eliminated. We have observed a strong descent (1.5 to 2 m) in groundwater levels in the post-sewerage period, the reason for that is clearly due to that wastewater outflow was eliminated. On this basis, it can be declared that the purification processes in the area have started, but at the same time, our results show that pollutants entering environment undergo a number of transformations and remain in the system for a long time.

scholarly journals The impact of bacterial contamination of the ejaculate and extender on the quality of swine semen doses

2017 ◽  
Vol 38 (5) ◽  
pp. 3095 ◽  
Author(s):  
Ana Maria Groehs Goldberg ◽  
Marisa Cardoso ◽  
Mari Lourdes Bernardi ◽  
Ivo Wentz ◽  
Fernando Pandolfo Bortolozzo
Keyword(s):  
Bacterial Contamination ◽  
Sperm Morphology ◽  
No Reduction ◽  
Degree Of Contamination ◽  
Colony Forming Units ◽  
Semen Processing ◽  
Semen Extender ◽  
Contamination Levels ◽  
The Impact

The aim of this study was to verify the influence of the degree of bacterial contamination of boar ejaculate and semen extender on the quality of semen doses. The experiment was conducted in four boar studs, from which raw semen and two semen doses from each ejaculate were collected to evaluate the number of colony-forming units (CFU), pH, sperm morphology and motility. Extender samples were also evaluated for CFU. Ejaculates that had higher levels of contamination ( > 220 CFU mL-1) resulted in semen doses with a greater degree of bacterial contamination but with no reduction in motility or alteration in pH. When the semen doses were classified according to the degree of contamination of the extender, a decrease in motility was observed after 108 and 168 h of storage (P < 0.05) in the group whose extender had ? 14,000 CFU mL-1 versus the group whose extender had ? 330 CFU mL-1. The pH remained stable during 168 h of storage in semen doses with extender that had lower contamination levels, but decreased from 7.2 to 6.0 between 24 and 168 h of storage (P < 0.05) in the group with extender that had higher levels of contamination. A higher number of abnormal acrosomes (P < 0.05) were observed after 168 h of storage in the semen doses whose extender was highly contaminated. The production of semen doses with low bacterial contamination and high sperm cell viability will only be possible with a strict hygienic control in semen processing, primarily with respect to the extender, combined with minimal contamination during collection.

scholarly journals Statistical Analysis of the Results of Test Artillery Tracers

2020 ◽  
Vol 11 (4) ◽  
pp. 9-26
Author(s):  
Dariusz AMPUŁA
Keyword(s):  
Statistical Analysis ◽  
Storage Time ◽  
Test Methodology ◽  
Diagnostic Decision ◽  
Laboratory Test Results ◽  
Long Time ◽  
Evaluation Module ◽  
The Impact ◽  
Shooting Decisions

A statistical analysis of multiyear laboratory test results of artillery tracers number 8 is presented in this article. This analysis was aimed at testing the impact of a natural ageing process on quality indicators during the long-time storage of these tracers. The influence of storage time on taking a diagnostic decision, relating to quality of lots after the conducted laboratory tests and on different classes of inconsistencies that occurred during these tests, was analysed. A detailed analysis of the impact of the storage time on diagnostic shooting decisions taken was also presented. The conducted statistical analysis suggests an assumption, that it is possible to change an evaluation module in the previous test’s methodology. Modification of this evaluation module will not negatively impact on the quality of further diagnostic tests. It will not negatively impact on correct evaluation of the prediction process of the tested elements of ammunition such as artillery tracers. The statistical analysis, carried out in the article, may have a significant impact on the modification of test methodology of the artillery tracers.

scholarly journals Investigating the Impact of Anthropogenic and Natural Sources of Pollution on Quality of Water in Upper Indus Basin (UIB) by Using Multivariate Statistical Analysis

2019 ◽  
Vol 2019 ◽  
pp. 1-13 ◽  
Author(s):  
Mansoor A. Baluch ◽  
Hashim Nisar Hashmi
Keyword(s):  
Water Quality ◽  
Statistical Analysis ◽  
Multivariate Statistical Analysis ◽  
Quality Parameters ◽  
Anthropogenic Source ◽  
Indus River ◽  
Multivariate Statistical ◽  
Quality Of Water ◽  
The Impact

Water quality of the Indus River around the upper basin and the main river was evaluated with the help of statistical analysis. In order to analyze the similarities and dissimilarities for identifying the spatial variations in water quality of the Indus River and sources of contamination, multivariate statistical analysis, i.e., principle component analysis (PCA), cluster analysis, and descriptive analysis, was done. Data of 8 physicochemical quality parameters from 64 sampling stations belonging to 6 regions (labeled as M1, M2, M3, M4, M5, and M6) were used for analysis. The parameters used for assessing the water quality were pH, dissolved oxygen (DO), oxygen reducing potential (ORP), electrical conductivity (EC), total dissolved solids (TDS), salinity (%), and concentration of arsenic (As) and lead (Pb), respectively. PCA assisted in extracting and recognizing the responsible variation factors of water quality over the region, and the results showed three underlying factors including anthropogenic source pollution along with runoff due to rain and soil erosion were responsible for explaining the 93.87% of total variance. The parameters which were significantly influenced by anthropogenic impact are DO, EC, TDS (negative), and concentration of Pb (positive), while the concentration of As, % salinity, and ORP are affected by erosion and runoff due to rain. The worst pollution situation for regions M1 and M6 was due to the concentration of As which was approximately 400 μg/l (i.e., 40 times higher than minimum WHO recommendation). Furthermore, the results also indicated that, in the Indus River, three monitoring stations and five quality parameters are sufficient to have a reasonable confidence about the quality of water in this most important reserve of Pakistan.

Seasonal variation in the microbial quality of shallow groundwater in the Kathmandu Valley, Nepal

2013 ◽  
Vol 14 (3) ◽  
pp. 390-397 ◽  
Author(s):  
Sadhana Shrestha ◽  
Takashi Nakamura ◽  
Rabin Malla ◽  
Kei Nishida
Keyword(s):  
Groundwater Level ◽  
Seasonal Variations ◽  
Shallow Groundwater ◽  
Dry Season ◽  
Kathmandu Valley ◽  
Microbial Quality ◽  
Wet Season ◽  
Groundwater Levels ◽  
E Coli

To develop effective groundwater pollution control strategies for the Kathmandu Valley, Nepal, seasonal variations in microbial quality and their underlying mechanisms must be understood. However, to date, there are no studies that address these topics. In this study, groundwater samples from dug wells were collected during the dry and wet seasons from 2009 to 2012, and Escherichia coli (E. coli) and total coliforms were analysed. Three wells were monitored each month for a year. Microbial concentrations in shallow groundwater were significantly higher during the wet season than during the dry season. Analyses of rainfall and E. coli concentrations in different seasons indicated that a high level of faecal material infiltration during the rainy season may have caused the seasonal variations in microbial quality. A moderate to strong relationship between E. coli concentrations and groundwater level suggested that the rise in groundwater levels during the wet season may be another reason for this variation. This long time-scale survey detected a significant decline in the microbial quality of shallow groundwater during the wet season as compared with the dry season. We propose that the infiltration of contaminants and change in groundwater level are the two probable mechanisms for the observed seasonal differences.

scholarly journals Assessment of the influence of the Viriva granite quarry on the condition of the surface and ground waters within the Vyry village

2021 ◽  
pp. 69-78
Author(s):  
S. A. Shevchuk ◽  
O. V. Zorina ◽  
A. M. Shevchenko ◽  
O. M. Kozytsky ◽  
Y. O. Mavrykin
Keyword(s):  
River Flow ◽  
Atmospheric Precipitation ◽  
Water Levels ◽  
Open Pit ◽  
Groundwater Levels ◽  
Ground Waters ◽  
Long Time ◽  
Time Of Operation ◽  
The Impact ◽  
The Village

Analyzed the results of their own research to assess the impact of the Vyrovsky granite quarry on the state of surface and ground waters within the village of Vyry, Sarny district, Rivne region of Ukraine. Research methods: hydrogeological, sanitary-chemical, analytical. It has been established that the technological process of extracting granite and producing construction crushed stone does not involve the use of a large amount of water. Pit water is used as process water without additional intake of surface or groundwater. The main problems during the exploitation of the car, which are found on the enterprises, are connected with water. The stench is overwhelmed by the surging of ground and surface waters and the need for input for the safety of normal minds of their exploitation. Significant watering of the area's surface is due to the abundance of atmospheric precipitation, relatively flat relief, the presence of a small thickness of sedimentary rocks covering the crystalline massifs. So, the chemical and biological pollution of the river. The extraction by quarry waters does not occur, since the results of laboratory studies of the quarry water did not show its contamination. In general, the Vyrovsky granite quarry does not affect the volume of the river flow. Alignment, for a long time of operation of the Vyrovsky granite quarry, the groundwater levels of the aquifer have already been established and currently remain relatively stable. Further development of the open pit area will not affect the lowering of the groundwater level within the village. Vyry. Decrease in water levels in wells and wells within the village. Vyry in recent years (2015-2020) is associated with climatic changes, which led to a decrease in precipitation, an increase in temperature and evaporation and, as a consequence, a very low water content in rivers practically throughout Ukraine.

scholarly journals Pulmonary rehabilitation and tuberculosis: a new approach for an old disease

Pneumologia ◽  
2019 ◽  
Vol 68 (3) ◽  
pp. 107-113
Author(s):  
Beatrice Mahler ◽  
Alina Croitoru
Keyword(s):  
Quality Of Life ◽  
Muscle Weakness ◽  
Pulmonary Rehabilitation ◽  
Functional Independence ◽  
Daily Activities ◽  
New Approach ◽  
Antituberculous Treatment ◽  
Long Time ◽  
The Impact

Abstract Tuberculosis (TB) is still a leading cause of morbidity and mortality worldwide. The impact on patient’s life is significant, leading to physical, mental and social deconditioning, not only in active TB but also in post TB sequela. Although with specific antituberculous treatment sputum negativity can be achieved, TB extrapulmonary symptoms such as cachexia, muscle weakness and depression may persist for a long time. The pulmonary rehabilitation (PR) may be a useful tool in this patient’s therapy in active and also in sequela phase. The benefits of PR are: reducing symptomatology, improving the degree of functional independence and quality of life, and increasing the ability to perform daily activities. This article discusses the components of a PR programme in active TB and TB sequela, and the results obtained by studies so far.

scholarly journals The effect of disclosure regulation on the bias and accuracy of management earnings forecasts in Malaysian IPO prospectuses

2017 ◽  
Vol 15 (1) ◽  
pp. 59-77 ◽  
Author(s):  
Mohammed Abdullah Ammer ◽  
Nurwati A. Ahmad-Zaluki
Keyword(s):  
Initial Public Offering ◽  
Voluntary Disclosure ◽  
Earnings Forecasts ◽  
Management Earnings Forecasts ◽  
Multivariate Statistical ◽  
Disclosure Regulation ◽  
Content Type ◽  
Study Results ◽  
The Impact

Purpose This paper aims to examine the impact of disclosure regulation on the levels of bias and accuracy in management earnings forecasts disclosed in the prospectuses of Malaysian initial public offering (IPO). Specifically, the authors investigated the two environments of regulation (mandatory versus voluntary) to draw some conclusions regarding the benefits of regulating disclosure of management earnings forecasts. Design/methodology/approach A sample of 111 Malaysian IPOs listing on the Main Market of Bursa Malaysia from January 1, 2004 to February 29, 2012 was used. The paper uses both univariate and multivariate statistical analyses on this sample of IPOs. Findings The empirical results of these multivariate regressions indicated that disclosure regulation has positive and significant impact on the bias and accuracy of management earnings forecasts disclosed in IPO prospectus. In general, the study results suggest that using disclosure regulation to improve the quality of IPO earnings forecasts can be, to some extent, an effective strategy. Practical implications The findings of this study have important implications for regulators and investors. The findings can provide them some relevant insights on the improvements to the earnings forecasts accuracy and trends of the forecast (optimistic or pessimistic) after the change from mandatory to voluntary disclosure. Thus, the authorities may learn whether this change is an effective policy or whether the regime of mandatory disclosure was better for IPO companies and should be reversed. Originality/value This study is regarded as the first attempt to investigate the impact of reforms in disclosure regulation on the quality of management earnings forecasts of IPO prospectuses in a developing nation such as Malaysia. In spite of this, the paper focuses on a single country, and it contributes significant insights to the debate about the credibility of IPO management earnings forecasts.

Measuring gravity on ice: An example from Wanapitei Lake, Ontario, Canada

Geophysics ◽  
2006 ◽  
Vol 71 (3) ◽  
pp. J23-J29 ◽  
Author(s):  
Hernan A. Ugalde ◽  
Elizabeth L’Heureux ◽  
Richard Lachapelle ◽  
Bernd Milkereit
Keyword(s):  
Large Scale ◽  
Field Measurements ◽  
Noise Sources ◽  
Large Lakes ◽  
Data Set ◽  
Long Time ◽  
Calm Wind ◽  
Regional Gravity ◽  
The Impact

Large lakes have always represented a problem for regional gravity databases; the difficulty of access means gaps or coarse spacing in the sampling. Satellite, airborne, and shipborne gravity techniques are options, but the resolution and/or cost of these systems make them impractical or inaccurate for exploration or environmental studies, where the required resolution is [Formula: see text]. In this study, the feasibility of a ground gravity survey over a frozen lake where ice moves because of windy conditions is assessed. Lake Wanapitei, widely accepted as resulting from the impact of a meteorite 37 million years ago, is one of these cases in which the necessity of expanding coverage over poorly sampled regions arose from a significant gap between surface and airborne geophysical maps. Two gravity surveys were completed on the ice of Lake Wanapitei in the winters of 2003 and 2004. To study the structure, longtime series of gravity field measurements were recorded for 98 stations, allowing for improved control over the noise sources in the data. Final processing and integration with an existing regional data set in the area and the application of terrain corrections reduced the amplitude of the circular anomaly from 15 to [Formula: see text] and its diameter from 11 to [Formula: see text]. The feasibility of gravity surveys on ice was assessed, and we determined that for large-scale studies such as this one, the quality of the data, even under noisy conditions, was acceptable. However, for more detailed mapping, calm wind conditions and long time series are required.

scholarly journals Who cares? The impact on caregivers of suspected mining-related lung cancer

2019 ◽  
Vol 26 (4) ◽  
Author(s):  
N. Lightfoot ◽  
L. MacEwan ◽  
L. Tufford ◽  
D. L. Holness ◽  
C. Mayer ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Lung Cancer ◽  
Family Support ◽  
Cost Control ◽  
Short Form ◽  
Rand Corporation ◽  
Workplace Monitoring ◽  
Long Time ◽  
The Impact

Background In the present study, we investigated the emotional, physical, financial, occupational, practical, and quality-of-life impacts on caregivers of patients with mining-related lung cancer.Methods This concurrent, embedded, mixed-methods study used individual in-depth qualitative interviews and the 36-item Short Form Health Survey (version 2: RAND Corporation, Santa Monica, CA, U.S.A.) quality-of-life measure with 8 caregivers of patients with suspected mining-related lung cancer who had worked in Sudbury or Elliot Lake (or both), and sometimes elsewhere. Individuals who assist workers in filing compensation claims were also interviewed in Sudbury and Elliot Lake. Interviews (n = 11) were transcribed and analyzed thematically.Results Caregiver themes focused on the long time to, and the shock of, diagnosis and dealing with lung cancer; not much of a life for caregivers; strong views about potential cancer causes; concerns about financial impacts; compensation experiences and long time to compensation; and suggestions for additional support. Quality-of-life scores were below the norm for most measures. Individuals who assist workers in preparing claims were passionate about challenges in the compensation journey; the requirement for more and better family support; the need to focus on compensation compared with cost control; the need for better exposure monitoring, controls, resources, and research; and job challenges, barriers, and satisfaction.Conclusions Caregivers expressed a need for more education about the compensation process and for greater support. Worker representatives required persistence, additional workplace monitoring and controls, additional research, and a focus on compensation compared with cost control. They also emphasized the need for more family support.

Dancing Exercising Effect on the Middle-Aged Females’ Healthiness: A Pilot Study

2012 ◽  
Vol 151 ◽  
pp. 700-702
Author(s):  
Hua Zhang
Keyword(s):  
Older Women ◽  
Vascular System ◽  
Training Methods ◽  
Middle Aged ◽  
Different Types ◽  
Long Time ◽  
Fitness Training ◽  
The Impact

As health is a major event in life, almost as a kind of urbanites’ Consensus, and spending money on health, taking the time to exercise has become a must of some people in life. In order to better guide the middle-aged women in scientific fitness training, this paper plans to analyze the following issues: the physical status of infrequent exercise of older women, fitness exercises on the impact of middle-aged women, the comparison about different types of fitness training methods on the impact of middle-aged women. The results shows long-term exercise can delay and change in body shape and quality of the middle-aged women on the law of aging, and can prevent the aging state such as being fat early, gaining weight, decreasing physical fitness. Physical exercise has enhanced the middle-aged women’s function of cardio-cerebral-vascular system and respiratory system. The exercisers who insist for a long time have obviously higher cardiopulmonary load ability than those who have no exercise.

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