scholarly journals Hydromorphological and physicochemical conditions of the Parsęta River

2018 ◽  
Vol 15 (1) ◽  
pp. 53-62
Author(s):  
Józef Szpikowski ◽  
Grażyna Szpikowska

Abstract Rivers are hydromorphologically assessed in line with the Water Framework Directive. In order to assess the quality of the Parsęta River environment, the River Habitat Survey method was applied. The research studies, conducted in June 2016, provided an overview of hydromorphological issues, and also covered measurements and laboratory analyses on the quality of its waters. There were 24 measuring sections selected along the whole river. The selection of these sections took into account the representativeness of genetically various types of river valley, its size and discharge, and the variability of anthropogenic pressure. The assessment showed that the Parsęta River varies in natural quality (its HQA index ranged from 17 to 61) and that the modification of its valley is variable but generally low (its HMS index ranged from 0 to 33). Seventy-nine percent of the analysed sections were classified to the second (II) and third (III) hydromorphological classes, 8% to the first (I), and 13% to the fourth (IV). The central section of the Parsęta River has the highest degree of naturalness and the lowest degree of transformation. The river valley sections of kettle-hole origin are more transformed than those of fluvial origin. The quality of the Parsęta River waters assessed on the grounds of their physicochemical parameters indicates that the river is in good condition. The individual river water parameters are most often within the first (I) and second (II) classes. Any instances of the quality of waters being below the “good” level are due to phosphate concentrations exceeding the second (II) class and are contained within a 15-km stretch of the river below Białogard. A river section with a high degree of hydromorphological naturalness has the worst quality of waters.

2013 ◽  
Vol 35 ◽  
pp. 85-94
Author(s):  
Damian Spieczyński ◽  
Małgorzata Raczyńska ◽  
Anna Grzeszczyk-Kowalska ◽  
Mariusz Raczyński ◽  
Małgorzata Zimnicka-Pluskota

Author(s):  
Nicolae Boboc ◽  
◽  
Valentina Munteanu ◽  

The high degree of land use in the Republic of Moldova as a whole, and the Cogâlnic river basin in particular, imposes the need to assess the quality of the environment and the characteristics of the anthropogenic pressure on the landscapes in temporal and spatial dynamics and to identifying an adequate of measure system for the purpose to maintain/restore the optimal structure and functioning of landscape systems. Based from the Land Cadastre on data, statistical data of population censuses, bibliographic and cartographic sources, a system, was appraised a system of indicators(of naturalness, of artificialization of landscapes, environmental changes) and quantified human pressure on the environment through agriculture and anthropogenic pressure on forest landscapes from the Cogâlnic catchment area. The values of the indices and the human pressure on the landscapes were processed using GIS techniques and elaborated cartographic models.


2019 ◽  
Vol 7 (1) ◽  
pp. 79-94
Author(s):  
Akbar Akbar

This research is motivated by the phenomenon related to PAI lecturer performance that is not optimal yet. The government has issued policies to improve the quality of lecturers as an effort to improve the quality of education through the improvement of welfare. However, conditions in the field show that some lecturers who have received the professional allowance have not shown any significant performance improvement. Some lecturers who have very good competence sometimes not followed by high performance, this is reflected from the results of the lecturer's performance.The purpose of this research are: (1) to know the level of competence and performance of lecturers of PAI in Padang city (2) to analyze efforts to improve the performance of PAI lecturers in Padang city (3) to find the level of competence influence on PAI lecturer performance in Padang city.This research is a quantitative type with survey method and correlational approach. The population is PAI lecturers at state universities in the city of Padang totaling 30 people. The sampling technique is total sampling. Data collection techniques used were the dissemination of questionnaires, documentation and literature study. While the data analysis technique used is the normality test Kolmogorof Smirnov method. Test validity using Product Moment Pearson correlation formula. Test reliability using Alpha Cronbach and processing analysis using SPSS version 15.The research findings are: (1) the actual condition of PAI lecturer competence in public universities in Padang city is generally quite good (TCR = 3,93 / 5,00 or = 76,98%) whereas actual condition of teaching performance of lecturer PAI lecturers at state universities in Padang city were in good condition (TCR = 3.81 / 5.00 or = 69.64 %). (2) The efforts to improve the performance of PAI lecturers according to the authors include: Planning the development of lecturer's performance, organizing lecturer performance assessment, conducting lecturer performance assessment with sustainability, supervising the performance of lecturers as well as following up the results of lecturer performance assessment. (3) there is a significant positive correlation between lecturer competence and lecturer performance of 22,3 %, meaning competence contribute to lecturer performance.Suggested to the lecturers of PAI to improve the competence to produce performance as expected. The various parties who have responsibility to improve the performance of lecturers are expected to give attention to the increased competence of PAI lecturers in order to give a significant influence in order to improve the quality of national education.


The purpose of this research is to reveal and describe the quality of river waters and the fish comunity in Serayu river of Banyumas regency. The study was conducted using a survey method, with purposive random sampling technique. The study was conducted in Serayu river of Banyumas regency where three major rivers lead to it, namely Klawing river, Logawa river, and Tajum river. Fish sampled by spreaded net and handweb, with ten times sampling of each peripheral in each sampling point. Sampled fishes identified based on Kottelat et al. (1993) and verified on Biology Research Center, LIPI Cibinong and www.FishBase.org. Fish community structure analyzed by: Diverse, Cluster, and Multi Dimensional Scalling (MDS) of (Clarke and Warwick, 2001). The study found that water quality of physical and chemical parameters are in good condition. It includes temperature, flowrate, clarity, dissolved oxygen level, pH, and plankton species variation in Serayu River Banyumas Residency. Most species and individual number on Serayu River Banyumas Residency are from Cyprinidae Family. Species diversity are in low condition but there are no dominancies found. Fish abundance are higher in downstream area than in upstream area, but fish species diversity are lower in downstream area than in upstream area of Serayu River Banyumas Residency. Long period of mining activity could badly affect river fish’s life.


2021 ◽  
Vol 4 (1) ◽  
pp. 80-87
Author(s):  
Rafiq Prima Nugraha ◽  
Irvina Nurrachmi ◽  
Sofyan Husein Siregar

The research was conducted in December 2019 at Sungai Mesjid Village Dumai Riau Province. This study aims were to know the condition of water quality, know the structure of the phytoplankton community, know the concentration of chlorophyll-a and know the effect between chlorophyll-a concentration and phytoplankton abundance in waters. The method used in this study was a survey method. The research location is divided into 3 station points namely Bangsal Aceh, Marine Station and Jalan Dermaga. The results showed that the quality of waters classified as oligotrophic waters. Phytoplankton found in this study consisted of 4 classes and 12 species of phytoplankton and the abundance of phytoplankton has a range between 195.57 - 244.33 ind./l. Diversity index (H') ranges from 1.2951 - 2.1705, dominance index (D) ranges from 0.24 to 0.46 and uniformity index (E) ranges from 0.7825 to 0.9551. The chlorophyll-a concentration in waters of Sungai Mesjid Village in Dumai ranged from 0.0025 to 0.0210 mg/L. Phytoplankton abundance and chlorophyll-a concentration has a moderate effect, wherewith increasing chlorophyll-a concentration, phytoplankton abundance will also increase


2021 ◽  
Vol 248 ◽  
pp. 03002
Author(s):  
A.A. Sekin ◽  
N.A. Bychkova

The emotional state of an employee of any enterprise influences both the efficiency of work performance and the quality and stability of the final result. Management of production processes, taking into account the monitoring of the emotional state of the employee, is a rather urgent task that allows minimizing the risks of deviations from the specified level of product quality and production safety. However, the quality of the assessment of this influence is currently subjective and is based both on the personal opinion and competences of the expert conducting the monitoring, and on the tools used by him for assessing the emotional state. At the same time, the use of modern intelligent automated methods and tracking systems will reduce the distortion of expert judgment. Creation of an expert system for analyzing the emotional state of employees of an enterprise will make it possible to recognize the emotions of a particular employee with a fairly high degree of accuracy, accumulate a system of knowledge and generate analytical conclusions and predictions of behavior based on it, compile an emotional portfolio of each employee and draw conclusions about the ability to perform a certain type of work and current states. This paper presents the concept of an algorithm of an expert system (hereinafter referred to as ES), which is able, on the basis of the data obtained on the individual methods of non-verbal expression of an employee’s emotions, to assess the influence of his emotions on the quality of his work. The article reflects the results obtained in the framework of the implementation of the Agreement on research No. 05.601.21.0019 dated November 29, 2019.


2021 ◽  
Vol 66 (3) ◽  
pp. 63-72
Author(s):  
Jarosław Suchożebrski

One of the three basic components of assessing ecological state is the determination of hydromorphological conditions occurring in river channels and valleys. In this paper an effort has been taken to check usefulness for such evaluations River Habitat Survey (RHS) – British research method, which is used in Poland for classification of ecological quality of surface waters from the view-point of their actual hydromorphological state. The possibilities of using this method in field teaching of geography students were checked. For this purpose, the RHS method was modified and adapted to the needs of field exercises. Research was conducted in Nida Riverside region, near Pińczów (świętokrzyskie voivodeship, Poland). Collected material makes it possible to calculate synthetic indicator HMS (Habitat Modification Score) which allow the hydromorphological state of a river to be presented in numerical form and assessing river modification by human activities. The research released advantages of the RHS in field teaching of students. The method can also be used in field exercises with secondary school students.


2021 ◽  
Vol 12 (4) ◽  
pp. 31-40
Author(s):  
H. Kaducakova ◽  
G. Nowak ◽  
L. Suchocka ◽  
A. Gozdzialska ◽  
M. Pasek

Background: Acharacteristic feature of cancer is, among other things, that even after successful oncological treatment, the patient cannot close this chapter of life and the experience of being acancer patient. In oncology there is no unambiguous definition of apatient as ahealthy person. Methods: The study covered agroup of 20 people. In the con- ducted tests the diagnostic survey method was introduced. The technique of individual in-depth interviews was used. The re- spondent could fully express his or her own feelings, emotions, thoughts and experiences. Results. The respondents stated that positive emotions ap- peared with the completion of treatment, but indicated that the feelings were not related to the sense of healing but only to the completion of tiring therapeutic procedures. Some respondents complained about the feeling of chronic fatigue. Fatigue was not only related to the physical sphere, although everyone con- firmed that the side effects of the therapy persisted for some time. The respondents paid more attention to mental fatigue, which had various forms, e.g.: anxiety about possible relapse; functional losses; feeling of loss caused by radical treatment. Out of 20 respondents, 4 persons indicated aloss of health, es- pecially the sense of joy and happiness, self-esteem, self-con- fidence, social contacts, family and time. Conclusions: The research group consisted of 20 respondents, which limits the possibility of formulating generalized con- clusions, but indicates various directions of possible improve- ment and, most importantly, shows how the thinking about can- cer can be changed.


Author(s):  
Vitaly V. Ovchinnikov ◽  
Alexey A. Kulakov

The home heating systems as well as the food industry require a high degree of water purification. In the aims of the increasing of the quality of technical and potable water the experiments on the determination of the rigidity of water have been carried out in the fourth districts of Kazan after the addition to the water samples of β-alanine and l-asparagine as the agents for the complex formation with calcium and magnesium salts. The obtained results showed that the chosen amino acids able to reduce the rigidity and increase the quality of waters in 1.10-1.22 time. The calculated heats of combustion and formation of complexes of calcium and magnesium with alanine and asparagine confirm the conducted experimental results on their stability. Such experimental results prompted us to calculate the heat of combustion (DсH°) and formation (DfH°) of complexes of calcium and magnesium with the mentioned above amino acids [Met(amino acid)2, DсH°, DfH° (kJ mol-1± 0.5 % , respectively), number of valence electrons (N-g)] in according to the scheme of thermochemical research. It has been suggested to introduce the above mentioned amino acids or synthesized on their base little peptides into sorption-filters at the water preparation process.Forcitation:Ovchinnikov V.V., Kulakov A.A. Quality increasing of technical and potable water due to complexation between amino acids and ca and mg salts. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 6. P. 109-112


Hydrology ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 69
Author(s):  
Francisco Costa ◽  
António Vieira

The river habitat survey (RHS) system is a method used to assess the physical features and quality of rivers, which was developed to assist in the conservation and recovery of riverside habitats. The RHS takes into account the need to characterize areas of intervention from a hydromorphological point of view, in order to introduce corrective measures aimed at restoring degraded sections and habitats, and increasing local biodiversity. In this paper, we present the results obtained from the application of the RHS methodology to the River Selho, in the municipality of Guimarães (Portugal). The transects that we defined were strongly influenced by anthropic actions that have modified the riverside habitats, the artificialization of the river channel, and the urban occupation of the banks. Taking into account the results, we can point out the main problems that currently affect the hydromorphological quality of the transects analyzed in the River Selho, as well as identify the originating factors: the excessive silting of the watercourse; morphometric changes, with an emphasis on the narrowing and modification of the channel and the banks; as well as the massive destruction of the riparian zone. This study shows that the application of the RHS methodology is a useful tool for the management of degraded riverside areas.


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