scholarly journals Principles of constructed wetlands designing

2019 ◽  
Vol 27 (4) ◽  
pp. 255-263
Author(s):  
Kseniia Y. Rybka ◽  
Nataliia M. Shchegolkova
Keyword(s):  
Constructed Wetlands ◽  
Residence Time ◽  
Aquatic Plants ◽  
Subsurface Water ◽  
Technological Parameters ◽  
Agricultural Wastewater ◽  
Universal Principles ◽  
The World ◽  
Individual Type

Constructed wetlands (CW) - shallow surfaces or subsurface water bodies, planted with higher aquatic plants and designed to treat wastewater - have been actively used in world practice for the last decades. There are no universal principles for designing such systems, so for each combination of landscape (in which a CW is located) and the quality of wastewater, an individual type of CW is selected. The article provides an overview of the principles adopted in the world for calculating the main technological parameters of CWs (choice of the type of CW, calculation of the area of CW, the residence time of the water in the system, the choice of filtering medium, etc.) developed on the basis of numerous functioning objects. The recommendations given in the article are applicable for small and mediumsized CWs intended for the treatment of domestic, storm and agricultural wastewater.

scholarly journals ON THE ISSUE OF THE USE OF WATERJET TREATMENT IN MODERN MECHANICAL ENGINEERING

2021 ◽  
pp. 39-47
Author(s):  
Gabit Maksutovich Bazenov
Keyword(s):  
Grain Size ◽  
Heat Generation ◽  
Mechanical Engineering ◽  
Cutting Speed ◽  
Plasma Processing ◽  
Technological Capabilities ◽  
Technological Parameters ◽  
Technological Characteristics ◽  
The World

The article deals with the application of waterjet abrasive processing (cutting) in mechanical engineering. The data on the application areas, advantages, disadvantages and technological capabilities, as well as the world leaders in the production of waterjet cutting machines with technological characteristics are presented. In waterjet processing, the process is most influenced by the technological parameters: the speed of the jet, the grain size of the abrasive, the angle of inclination of the jet, the distance from the nozzle to the surface to be treated. Thus, the use of waterjet processing ensures minimal heat generation and accurate cutting of materials, the equipment is completely versatile and economical compared to plasma processing of the material reaching a cutting speed of 30,000 mm / min without affecting the quality of the cut, as well as the absence of surface heating, the likelihood of sparks make the use of water-abrasive machines as convenient and safe as possible.

Constructed wetlands for wastewater and activated sludge treatment in north Greece: a review

2010 ◽  
Vol 61 (10) ◽  
pp. 2653-2672 ◽  
Author(s):  
V. A. Tsihrintzis ◽  
G. D. Gikas
Keyword(s):  
Constructed Wetlands ◽  
Ecological Engineering ◽  
Pilot Scale ◽  
Continuous Performance ◽  
Operational Parameters ◽  
Northern Greece ◽  
Sludge Treatment ◽  
Agricultural Wastewater ◽  
Engineering And Technology ◽  
The World

Constructed wetlands used for the treatment of urban, industrial and agricultural wastewater have become very popular treatment systems all over the world. In Greece, these systems are not very common, although the climate is favourable for their use. During recent years, there have been several attempts for the implementation of these systems in Greece, which include, among others, pilot-scale systems used for research, and full-scale systems designed and/or constructed to serve settlements or families. The purpose of this paper is the presentation of systems operating in Northern Greece, which have been studied by the Laboratory of Ecological Engineering and Technology of Democritus University of Thrace and others. A comparison is made of different system types, and the effect of various design and operational parameters is presented. Current research shows the good and continuous performance of these systems.

Transport of Lithium Tracer and E. coli in Agricultural Wastewater Treatment Wetlands

2008 ◽  
Vol 43 (2-3) ◽  
pp. 137-144 ◽  
Author(s):  
Leah Boutilier ◽  
Rob Jamieson ◽  
Robert Gordon ◽  
Craig Lake
Keyword(s):  
Constructed Wetlands ◽  
Residence Time ◽  
Mean Residence Time ◽  
Agricultural Waste ◽  
Dairy Wastewater ◽  
Treatment Wetlands ◽  
E Coli ◽  
Agricultural Wastewater ◽  
Mass Transport Process ◽  
The Mean

Abstract Agricultural waste must be managed effectively to protect surface and groundwater resources, as well as human health. Constructed wetlands can provide a low-cost environmentally acceptable method for the treatment of agricultural wastewater. An ionic tracer (Lithium chloride [LiCl]) and a biotracer (a naladixic acid-resistant strain of Escherichia coli) were injected into six pilot-scale constructed wetlands treating dairy wastewater: three surface-flow (SF) wetlands and three subsurfaceflow (SSF) wetlands. Each wetland was 3.9-m long and 1.7-m wide. Residence time distribution functions were calculated for each wetland to investigate the hydraulic behaviour of each system during winter and summer conditions. During the summer study, the mean residence times for SF wetlands 2, 4, and 6 were 12, 16, and 14 days, respectively, while the mean residence time for SSF wetlands 1, 3, and 5 were 23, 18, and 22 days, respectively. The longitudinal dispersion coefficients were in the order of 10-6 m2 s-1 for each wetland during the summer and winter. The mean residence time for SF wetlands 2, 4, and 6 during the winter study were 8, 10, and 10 days, respectively, while the mean residence time for SSF wetlands 1, 3, and 5 were 8, 9, and 10 days, respectively. E. coli effluent peaks often occurred prior to Li peaks, suggesting that bacteria may be motile within the wetland environment. This study suggests that dispersion is an important mass transport process in both SF and SSF wetlands. Long-term operation of SF and SSF treatment wetlands may cause reduced retention times and treatment efficiency due to organic matter accumulation and channelling. Cold winter temperatures may also increase the survival of bacteria within treatment wetland systems, decreasing the wetland's ability to reduce bacteria concentrations during the winter months.

Correction of functional constipation in patients with limited mobility after stroke

2019 ◽  
Vol 1 (6) ◽  
pp. 53-55
Author(s):  
M. S. Turchina ◽  
M. V. Bukreeva ◽  
L. Yu. Korolyova ◽  
Zh. E. Annenkova ◽  
L. G. Polyakov
Keyword(s):  
Quality Of Life ◽  
Chronic Constipation ◽  
Functional Constipation ◽  
Cerebrovascular Diseases ◽  
Medical Rehabilitation ◽  
Stroke Patients ◽  
Limited Mobility ◽  
Complete Restoration ◽  
The World

Currently, the problem of early rehabilitation of stroke patients is important, since in terms of the prevalence of cerebrovascular diseases and disability after suffering a stroke, Russia is one of the first places in the world. The complex of medical rehabilitation of such patients should provide for the early and most complete restoration of all body functions, patient education for lost skills, re-socialization of the patient and improvement of the quality of life. One of the factors contributing to a significant reduction in the quality of life after a stroke is the development of chronic constipation. The article reflects the modern methods of correction of chronic constipation in patients with limited mobility.

HASTANELERİN HİZMET KALİTESİNİN HASTA TATMİN ÖLÇEĞİ İLE ÖLÇÜLMESİ: KARABÜK DEVLET HASTANESİNDE YATAN HASTALAR ÜZERİNDE BİR ARAŞTIRMA THE MEASUREMENT SERVICE QUALITY OF THE HOSPITALS BY THE PATIENT SCALE: A RESEARCH ON THE PATIENTS IN KARABUK STATE HOSP

2013 ◽  
Vol 1 (1) ◽  
pp. 100
Author(s):  
Selçuk Yurtsever
Keyword(s):  
Patient Satisfaction ◽  
Health Services ◽  
Literature Review ◽  
Private Sector ◽  
State Hospital ◽  
Continuous Change ◽  
Satisfaction Scale ◽  
The World ◽  
Main Factors

It has been known that both in the world and in Turkey a continuous change has been experienced in the provision of health services in recent years. In this sense by adopting the customer(client) focused approach of either public or private sector hospitals; it has been seen that they are in the struggle for presenting a right, fast, trustuble, comfy service. The purpose of this research is to measure the satisfaction degree, expectations and perceptions of the patients in Karabük State Hospital through comparison. In this context, the patient satisfaction scale which has been developed as a result of literature review has been used and by this scale it has been tried to measure the satisfaction levels of the patients in terms of material and human factors which are the two main factors of the service that was presented. In the study, with the scales of Servqual and 0-100 Points together, in the part of the analysis MANOVA have been used. The expectations and the perceptions of the patient has been compared first by generally and then by separating to different groups according to the various criterias and in thisway it has been tried to be measured their satisfaction levels. According to the results that were obtained, although, the satisfaction levels of the patients who have taken service from Karabük State Hospital are high in terms of thedoctors and the nurses; it has been reached to the result that their satisfaction levels are low in terms of the materials that have been used at the presenting of the service and the management.

IN SEARCH OF EDUCATIONAL STRATEGY FOR UKRAINE

2016 ◽  
Author(s):  
Viсtor Ognevyuk
Keyword(s):  
Secondary Education ◽  
Primary Education ◽  
School Management ◽  
Education Quality ◽  
Quality Of Education ◽  
Global Competitiveness ◽  
The World ◽  
Management School ◽  
Global Competitiveness Report

The article deals with the world rating of Ukrainian educational sphere according to The Global Competitiveness Report and UNESCO Science Report. It shows comparative indices of Ukraine in contrast to the other countries of these world ratings according to the “Quality of primary education”, “Penetration of primary education”, “Penetration of secondary education”, “Quality of secondary education”, “Quality of education in Sciences”, “Quality of school management”, “School access to the internet” and others. The article also defines strategic directions of reforming Ukrainian education system to improve its position in the world international ratings.

konsep dasar, prinsip dan peranan supervisi

2020 ◽  
Author(s):  
Isra Revenia
Keyword(s):  
Education Quality ◽  
School Staff ◽  
The World

When we compare with the quality of the best education in the world, Indonesia can catagorized as far behind. This can be seen from the achievments of students who become rejected measuring education quality in improving the qualitu of education, education supervision has very important role in developing education quality. Supervision can be interpreted as a coaching activity that has been planned to assist teachers and staff and other school staff in carrying out work effectively so that it gets good results. Supervision is a process that is applied to a job that has been carried out and even evaluates and corrects the work I to match what was determined from the start.

Peningkatan Teknologi Informasi Melalui Supervisi Pendidikan

2019 ◽  
Author(s):  
Rika ramadani ◽  
Hade Afriansyah
Keyword(s):  
Information Technology ◽  
Learning Process ◽  
Quality Of Education ◽  
Information Technology Education ◽  
Use Of Technology ◽  
Ongoing Training ◽  
The World ◽  
Teacher Supervisors

Progress in information technology that is so fast is expected to improve the quality of education in Indonesia. In the world of information technology education can help and support the learning process. Especially now all the learning process activities can be done online. Progress in information technology must also be supported by quality human resources. In this case the teacher is very instrumental in the utilization of information technology in the world of education. Because the teacher is one of the education supervisors who will encourage the advancement of the quality of education in Indonesia. But in reality the quality of teachers in Indonesia is inadequate. There are still many teachers who cannot use information technology in learning especially for teachers who are senior or old. As teacher supervisors, they must improve the quality of their performance in using technology. To improve the ability of teachers to use technology, ongoing training is needed to use technology. The role of the head of the school as a supervisor is also needed, namely the principal is obliged to supervise, control, and approach the teacher in terms of the use of technology in the learning process.

STUDI ANALISIS DAMPAK PADEMI COVID-19 TERHADAP EKSISTENSI PEMBELAJARAN PENDIDIKAN AGAMA ISLAM DI INDONESIA

Edupedia ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 45-53
Author(s):  
Ilzam Dhaifi
Keyword(s):  
Online Education ◽  
Religious Education ◽  
Virtual Classroom ◽  
Education Services ◽  
Religious Consciousness ◽  
The Core ◽  
Equal Education ◽  
The World ◽  
The Government

The world has been surprised by the emergence of a COVID 19 pandemic, was born in China, and widespread to various countries in the world. In Indonesia, the government issued several policies to break the COVID 19 pandemic chain, which also triggered some pro-cons in the midst of society. One of the policies government takes is the closure of learning access directly at school and moving the learning process from physical class to a virtual classroom or known as online learning. In the economic sector also affects the parents’ financial ability to provide sufficient funds to support the implementation of distance learning applied by the government. The implications of the distance education policy are of course the quality of learning, including the subjects of Islamic religious education, which is essentially aimed at planting knowledge, skills, and religious consciousness to form the character of the students. Online education must certainly be precise, in order to provide equal education services to all students, prepare teachers to master the technology, and seek the core learning of Islamic religious education can still be done well.

COMPARATIVE METHOD IN CONSTITUTIONAL LAW: BETWEEN PRESUMPTIONS OF SIMILARITIES AND DIFFERENCES

2019 ◽  
Vol 14 (5) ◽  
pp. 84-113
Author(s):  
ALEXANDRA A. TROITSKAYA
Keyword(s):  
Political Philosophy ◽  
Theoretical Model ◽  
Constitutional Law ◽  
Comparative Method ◽  
Comparative Law ◽  
Middle Level ◽  
Legal Research ◽  
Universal Principles ◽  
The World ◽  
Similarities And Differences

The two main approaches to the use of the comparative method in legal research, functional and cultural, have some "predetermined" considerations regarding the results that will (or should) be discovered by comparing various legal phenomena — should the emphasis be on similarities or differences between these phenomena. These considerations are based on the vision of, respectively, the universal or pluralistic nature of law of various societies, and in fact they are able to correct substantially the process of cognition of legal phenomena using the comparative method, adjusting it to the desired result. In the case of similarities, we can talk about artificially narrowing the circle of countries under investigation. In the case of differences, the isolation of systems and the uniqueness of their cultural characteristics are unreasonably exaggerated. The alternative assumptions presented in the theory of comparative law regarding the existence of universal principles of law or the fundamental uniqueness of each legal system require a critical rethinking of constitutional provisions and practice in comparative studies. The use of the comparative method in constitutional law is not reducible to the implementation of the ideas of political philosophy, and objective conclusions should not be replaced by predetermined normative guidelines. The similarities and differences revealed by the researcher of constitutional ideas, norms and practices can be considered as a result of comparison of independent value.Constitutional law is associated with a variety of substantial constructs existing in the world, not excluding, however, their intercommunication. Understanding these constructions requires attention to both the similarities and the differences in specific legal orders (as well as the reasons for their functioning in this, and not another form). The use of the comparative method in the absence of striving for predetermined results is simultaneously aimed at understanding the laws of development of constitutional institutions and maintaining the horizon of their diversity as an important component of this development. Each time, the researcher should distance himself from his prejudices regarding the similarities or differences between the institutes under study, rechecking whether the obtained results are really the results of applying the comparative method, and not the initial constructions.The logic of a comparative study corresponds to the construction of theories of "middle level", aimed at forming the theoretical model of a particular legal in-stitution, taking into account the practice of implementing this institution in specific states. The focus on middle-level theories within the framework of the comparative method allows one to go beyond the description of single systems, formulate conclusions at the level of generalization that ensure the comparability of the studied objects, and at the same time maintain an understanding of the diversity of constitutional models.

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