Wyniki wyszukiwania - BazTech

1

Usuwanie Cryptosporidium z wód popłucznych

Kłos M., Gumińska M., Kubalczyk A.

Technologia Wody

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2015

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Nr 3 (41)

30--32

PL

Przeciętna ilość wód popłucznych powstających w zakładach wodociągowych stanowi 2-8% oczyszczanej wody. Tak duże straty wody skłaniają zakłady wodociągowe do wdrażania recyrkulacji popłuczyn do głównego ciągu technologicznego oczyszczania wody. Pojawia się jednak problem jakości wód popłucznych, które oprócz zawiesin zawierają mikroorganizmy patogenne. W pracy przeanalizowano skuteczność procesu flotacji w oczyszczaniu wód popłucznych w aspekcie usuwania Cryptosporidiumparvum.

EN

The average amount of backwash water produced in waterworks ranges from 2 to 8% of treated water. Such large water losses tend waterworks to implement recycling of backwash water to a main technological system of water treatment. However, there is a problem of quality of backwash water, which except for suspensions, contains pathogenic microorganisms. The study examined the effectiveness of flotation process in backwash water treatment in terms of removal of Cryptosporidium parvum.

2

Problem glinu resztkowego w uzdatnianiu wody

Gumińska J., Gumińska M., Kubalczyk A.

Technologia Wody

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2015

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Nr 4 (42)

30--33

EN

Pre-hydrolysed coagulants are usually more effective in comparison to hydrolysing coagulants e.g. aluminium sulphate. They are particularly well suited at low temperatures and at low alkalinity of raw water. However, despite many advantages resulting from the use of this group of reagents there is a problem of residual alu-minium in the form of fine particles, which have a very negative effect on subsequent unit processes.

3

Systemy kontroli i sterowania procesem koagulacji i filtracji pospiesznej w aspekcie bezpieczeństwa bakteriologicznego wody pitnej

Kłos M., Gumińska M., Kubalczyk A.

Technologia Wody

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2014

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Nr 4 (36)

42--45

PL

Jednym z podstawowych zagadnień związanych z oczyszczaniem wód powierzchniowych jest konieczność zapewnienia bezpieczeństwa bakteriologicznego produkowanej wody. Wbrew powszechnie utartym opiniom, nie jest to związane jedynie z zapewnieniem skutecznego procesu dezynfekcji. Stopień zanieczyszczenia ujmowanych wód powierzchniowych bakteriami patogennymi wymaga, aby stopień ich usunięcia przed ostatnim procesem ciągu technologicznego, jakim jest dezynfekcja, wynosił co najmniej 99,9% (3 log). Stawia to bardzo duże wymagania systemom koagulacji i filtracji pospiesznej. W artykule przedstawiono zagadnienia związane z kwestią zapewnienia wymaganej efektywności układów separacji zawiesin pokoagulacyjnej w aspekcie warunków, jakie powinny spełniać systemy kontroli i sterowania urządzeniami realizującymi te procesy.

EN

One of the fundamental issues related to the purification of surface waters is the need to ensure bacteriological safety of produced water. Contrary to common opinions it is not only related to ensure the effective disinfection process. The degree of contamination of surface waters with pathogenic bacteria requires that the degree of their removal before the last technological process i.e. disinfection is of at least 99.9% (3log). This means very- high effectiveness of coagulation and rapid filtration systems. The article presents the issues related to the effectiveness of the separation systems of post-coagulation suspensions in terms of conditions that must be met by the control systems and control devices supporting these processes.

4

Wpływ nadtlenku wapnia na fitotok-syczność gleby zanieczyszczonej fluorantenem

Małachowska-Jutsz A., Gumińska M., Bernaś Z.

Ochrona Środowiska

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2014

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Vol. 36, nr 3

37--42

PL

Wielopierścieniowe węglowodory aromatyczne (WWA) są trudno rozkładalnymi zanieczyszczeniami, które negatywne oddziałują na środowisko glebowe. Związki te zmieniają właściwości fizyczne, chemiczne i biologiczne gleby, powodują zmniejszenie ilości łatwo przyswajalnych składników pokarmowych oraz utrudniają wymianę powietrza między glebą a atmosferą. W pracy badano wpływ zastosowania nadtlenku wapnia (120÷240 mgCaO2 /kg) wprowadzonego do gleby zanieczyszczonej fluorantenem (1,5 mg/kg) na jej toksyczność w stosunku do wybranych roślin (rzeżucha, gorczyca i sorgo). Przeprowadzone badania nie dały jednoznacznej odpowiedzi na pytanie, czy nadtlenek wapnia wpływa pozytywnie na wzrost i rozwój roślin rosnących na glebach zanieczyszczonych węglowodorami. Zaobserwowano, że dodatek nadtlenku wapnia do gleby zawierającej fluoranten stymulował usuwanie tego węglowodoru, jednakże stwierdzono również stymulację wzrostu korzeni roślin w próbkach gleby z dodatkiem samego nadtlenku wapnia. Niemniej jednak nie wykazano, czy obserwowany efekt był wynikiem stresu oksydacyjnego, czy też poprawy warunków środowiskowych.

EN

Polycyclic aromatic hydrocarbons (PAHs) are hardly decomposable pollutants that adversely affect soil environment. These compounds alter physical, chemical and biological soil properties, lead to reduction in the amount of easily digestible nutrients and impede gas exchange between soil and atmosphere. In this study, the effect of calcium peroxide (120–240 mgCaO2 /kg) was tested in soil contaminated with fluoranthene (1.5 mg/kg) on its toxicity towards selected plants (root cress, mustard and sorghum). Our results did not give an unambiguous answer to the question whether effect of calcium peroxide on growth and development of plants growing on soils contaminated with hydrocarbons was positive. It was observed that calcium peroxide added to the soil with fluoranthene enhanced its removal. However, stimulation of root growth was also observed in soil samples with calcium peroxide alone. It was difficult to assess whether the observed effect was a result of oxidative stress or environmental conditions improvement.

5

Assessment of the didactic measurement results using FCM type networks

Gumińska M., Madejski J.

Archives of Materials Science and Engineering

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2009

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Vol. 39, nr 1

45-52

EN

Purpose: The paper presents students egzamination system developer for the scaleable e-learning system. Organisation of the teaching and examination processes, as well as the implementation details are described. An intelligent system based on one of the Artificial Intelligence methods - FCM (Fuzzy Cognitive Maps) type network is being developed within the framework of current work on the e-learning process topic, to model the behaviour and functioning the system as a whole. Design/methodology/approach: The intelligent examination system for students was developed based on mechanism derived from HotPotatoes system. Programming languages like PHP and JavaScript were also used. Fuzzy Cognitive Maps were used to model the e-learning process and an example of the system use is presented. Findings: The project effect is the intelligent examination system supporting the statistical analysis of the difficulty level of test problems, generating comments and materials individually for every user. The didactic process was modelled using FCM method. Practical implications: Reduction of test checking time consumption, individual attitude to every student, score advised to the students along with the comments pertaining to the wrong answers and recommended study topics - all immediately after the test, sent to the student's mailbox. Originality/value: Employment of FCM AI tool for evaluation of the teaching process effectiveness.

6

Web based e-learning platform as a source of the personalised teaching materials

Gumińska M., Madejski J.

Journal of Achievements in Materials and Manufacturing Engineering

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2007

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Vol. 24, nr 2

227-230

EN

Purpose: The goal of this work was to develop further the educational platform of the Internet Students Teaching Centre (ISTC) - the e-learning system based on the available state-of-the-art internet technologies (HTML, CSS, PHP, MySQL) with the possibility to generate the personalised PDF documents. Design/methodology/approach: The paper presents the process of working out the educational materials package in PDF format, generated from the lecture notes (PowerPoint), instruction sheets with test problems (Excel), and knowledge tests (Hot Potatoes). Educational materials are generated dynamically on the e-learning platform, i.e., individually for each student. A detailed example is included-of working out the PDF document format and its automatic generation along with the course student certificate using the PHP scripts. Findings: The efficient method of assisting remotely the e-learning students acquiring skills and knowledge at a varying pace has been developed, providing them with the personalised support. Research limitations/implications: Extensive testing has to be carried on big students groups, more course materials have to be developed and uploaded onto the e-learning platform. Originality /value: Possibility of creating the personalised documents is the first stage in generating the programmed course materials, which - after verifying student's knowledge and determining his or her arrears - are automatically sent to the student, containing more detailed explanations on required topics.

7

Scaleable model of e-learning platform

Gumińska M., Madejski J.

Journal of Achievements in Materials and Manufacturing Engineering

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2007

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Vol. 21, nr 1

95-98

EN

Purpose: The issue of distance learning is presented in the work, and especially the development stages of the educational platform of the Internet Teaching Centre for Students (further referred to as ICKS), which is planned to be used for implementation of the e-learning didatcic process. Design/methodology/approach: The following programming technologies were used for development of the educational platform: HTML, CSS, JavaScript, PHP and SQL. The relational database was designed using the DFD and ERD models, and created in MySQL using the SQL language. PHP language was used to develop the relevant interface so that the user can access and modify data in the database; scripts in this language form the MySQL database front-end making it possible to carry out operations on data. The ICKS web page interface, including the Administrative Panel, Student Rooms, and Teacher Rooms, was developed using the HTML language and the CSS cascading style sheets. Findings: Detailed e-learning site specification requires were put forth and the contemporary technologies were applied to develop the framework for the scaleable e-learning platform. Research limitations/implications: The system will have to be filled in with relevant course materials and tested thoroughly before being fielded. Originality/value: System elements development completed out so far and detailed specifications make it possible to implement the platform to handle all subjects taught at the Institute.

8

Computer aided system for selection of parameters for making metallographic microsections

Dobrzański L. A., Gumińska M.

Journal of Achievements in Materials and Manufacturing Engineering

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2007

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Vol. 24, nr 2

147-150

EN

Purpose: The goal of this work was development of the computer aided system for selection of technological parameters for making the metallographic microsections for the microscopic examinations. Design/methodology/approach: Prolog language - the Artificial Intelligence tool was employed in the project, and the Logic Programming Associate's VisiRule system, which was used for saving the knowledge base - rules pertaining the objects and their relationships. These tools were used to develop the expert system for selection of the recommended technology for the metallographic microsections. Findings: Knowledge acquisition process was carried out to cover recommendations of manufacturers of the equipment for metallographic microsections. Formulation of the pertinent knowledge in the LPA-Prolog VisiRule tool is presented along with the results of technology instruction sheet presentation. Research limitations/implications: The expert system for selection of parameters for making the metallographic microsections is currently at the testing and development stage. Originality/value: Making the metallographic microsections is a time consuming task, sometimes material for examination is scarce, so any system that ensures good quality of microsections is very valuable. The system under development offers the best advice to anybody striving to obtain the best quality of the specimens.