145 research outputs found
OPTIMISATION OF THE ELECTROCHEMICAL ETCHING TECHNIQUE FOR HIGH-PERFORMANCE POROUS GERMANIUM ELECTRODES
No full textWastewater as a Controversial, Contaminated yet Coveted Resource in South Asia
No full texthuman development, water, sanitation
Study of Pakistan pilot project farmer-leaders to Nepal
No full textFarmer participation / Irrigation management / Farmer managed irrigation systems / Irrigated farming / Sustainable agriculture / Institution building / Pakistan
Exploring Rapid Photocatalytic Degradation of Organic Pollutants with Porous CuO Nanosheets: Synthesis, Dye Removal, and Kinetic Studies at Room Temperature
No full textIn this work, we report the facile, environmentally friendly, room-temperature (RT) synthesis of porous CuO nanosheets and their application as a photocatalyst to degrade an organic pollutant/food dye using NaBH4 as the reducing agent in an aqueous medium. Ultrahigh-resolution field effect scanning electron microscopy images of CuO displayed a broken nanosheet-like (a length of ∼160 nm, a width of ∼65 nm) morphology, and the lattice strain was estimated to be ∼1.24 × 10-3 using the Williamson-Hall analysis of X-ray diffraction plots. Owing to the strong quantum size confinement effect, CuO nanosheets resulted in an optical energy band gap of ∼1.92 eV, measured using Tauc plots of the ultraviolet-visible (UV-vis) spectrum, resulting in excellent photocatalytic efficiency. The RT synthesized CuO catalyst showed a high Brunauer-Emmet-Teller surface area of 30.88 ± 0.2313 m2/g (a correlation coefficient of 0.99972) with an average Barrett-Joyner-Halenda pore size of ∼20.385 nm. The obtained porous CuO nanosheets exhibited a high crystallinity of 73.5% with a crystallite size of ∼12 nm and was applied as an efficient photocatalyst for degradation of the organic pollutant/food dye, Allura Red AC (AR) dye, as monitored by UV-vis spectrophotometric analysis and evidenced by a color change from red to colorless. From UV-vis spectra, CuO nanosheets exhibited an efficient and ultrafast photocatalytic degradation efficiency of ∼96.99% for the AR dye in an aqueous medium within 6 min at RT. According to the Langmuir-Hinshelwood model, photodegradation reaction kinetics followed a pseudo-first-order reaction with a rate constant of k = 0.524 min-1 and a half-life (t1/2) of 2.5 min for AR dye degradation in the aqueous medium. The CuO nanosheets showed an outstanding recycling ability for AR degradation and would be highly favorable and an efficient catalyst due to the synergistic effect of high adsorption capability and photodegradation of the food dye. © 2021 The Authors. Published by American Chemical Society1
The impact of physical activities of aerobic type in body mass and volume parameters
No full textMyrtaj Nazim, Shkodra Mimoza. The impact of physical activities of aerobic type in body mass and volume parameters. Journal of Education, Health and Sport. 2019;9(9):50-57. eISSN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.3373892
http://ojs.ukw.edu.pl/index.php/johs/article/view/7311
The journal has had 7 points in Ministry of Science and Higher Education parametric evaluation. Part B item 1223 (26/01/2017).
1223 Journal of Education, Health and Sport eISSN 2391-8306 7
© The Authors 2019;
This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland
Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike.
(http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
The authors declare that there is no conflict of interests regarding the publication of this paper.
Received: 05.08.2019. Revised: 15.08.2019. Accepted: 20.08.2019.
The impact of physical activities of aerobic type in body mass and volume parameters
Nazim Myrtaj1, Mimoza Shkodra1
1Faculty of Physical Culture and Sports, AAB College, Pristina, Kosovo
Correspondence to: Mimoza Shkodra, PhD, Faculty of Physical Culture and Sports, AAB College, E-mail: [email protected]
Nazim Myrtaj, PhD, Faculty of Physical Culture and Sports, AAB College, E-mail: [email protected]
Abstract
The aim of the paper was to prove the impact of aerobically programmed physical activities on body mass and volume and reducing the ratio of fatty and non-fatty mass to 30-40-year-old females. For this purpose, the research has included a sample of 30 females who have undergone a three months program with 3 training sessions per week. Eight anthropometric variables were applied for the processing of results and the confirmation of the difference between the initial and the final state, it has been applied the t-test for dependent groups within the SPSS statistics 21.0 program. The training program with aerobic exercises applied to this group of women shows that aerobic exercises influence positively weight reduction and passive body mass and so, it should be part of fitness exercises in order to improve the health condition.
Keywords: Physical activity, body mass, tested, t-test
Changes in some morphological characteristics and motor skills between female volleyball players and female handball players
No full textShkodra Mimoza, Myrtaj Nazim, Bislimi Arben. Changes in some morphological characteristics and motor skills between female volleyball players and female handball players. Journal of Education, Health and Sport. 2019;9(6):121-129. eISNN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.3238195
http://ojs.ukw.edu.pl/index.php/johs/article/view/6989
https://pbn.nauka.gov.pl/sedno-webapp/works/915143
The journal has had 7 points in Ministry of Science and Higher Education parametric evaluation. Part B item 1223 (26/01/2017).
1223 Journal of Education, Health and Sport eISSN 2391-8306 7
© The Authors 2019;
This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland
Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author (s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non commercial license Share alike.
(http://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
The authors declare that there is no conflict of interests regarding the publication of this paper.
Received: 05.05.2019. Revised: 25.05.2019. Accepted: 04.06.2019.
Changes in some morphological characteristics and motor skills between female volleyball players and female handball players
Mimoza Shkodra1, Nazim Myrtaj1, Arben Bislimi1
1Faculty of Physical Culture and Sports, AAB College, Prishtina, Kosovo
Correspondence to: Nazim Myrtaj, PhD, Faculty of Physical Culture and Sports, AAB College, E-mail: [email protected]
Abstract
The population from which the sample is taken for this paper is defined as the population of senior culminating athletes in the game of volleyball and handball, in the Kosovo superleague. The sample for the purposes of this research will include 100 female athletes, respectively, 50 female volleyball players and 50 female habdball players. The variables that are applied in this research are anthropometric and motor variables. 8 anthropometric variables and 7 motor variables were applied.
The results obtained from the collection of information and their processing, shows that the gained differencies between female volleyball players and female handball players in the motor variables of the explosive and situational force, indicate that during the preparatory phase in the volleyball game, it was expercised in the right way in the raising of these motor skills, while it was not given enough in the importance to the expercises of the explosive force of lower extremities.
Keywords: female volleyball players, female handball players, anthropometric characteristics, motor skills, T-test
Disaster debris management and recovery of housing stock in San Francisco, CA
No full textThesis (S.M.)--Massachusetts Institute of Technology, Dept. of Architecture, 2012.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Cataloged from student submitted PDF version of thesis.Includes bibliographical references (p. 156-160).This thesis investigates the potential effects of a 7.2 magnitude earthquake in San Francisco City, particularly the implications on San Francisco's residential housing stock and impacts on the construction and demolition waste stream. The study uses System Dynamics methodology to analyze the feasibility of recycling disaster debris as new construction material to rebuild the diminished housing stock. A meta-analysis identifies capacity requirements for transport and processing material, and seeks to project a time frame for refurbishing lost housing. Simulated scenarios of policy measures provide the basis for recommendations on improving San Francisco's post-disaster recovery as related to debris handling and reoccupation of housing. Results show that an increased use of recycled content products diverts upwards of 1.6 million tons of debris from landfill, with an additional two years of delay in overall recovery. Under this hypothesis, and considering residential housing recovery as a proxy for city-wide recovery, the effects of a largescale earthquake would require an estimated recovery time of 6.8 years. Future work will address additional influencing variables of economics while honing existing factors within the dynamic model, as well as applications to other vulnerable cities in a domestic and international context.by Zahraa Nazim Saiyed.S.M
Open Access institutional archives: a quantitative study (2006-2010)
No full textOpen access publishing is growing in importance, and, in parallel, the role of institutional archives has come to the forefront of discussion within the library community. The present study is an attempt to analyse the present trend of institutional archives worldwide. The factual data of each individual repository was collected from various Directories of Institutional Repositories by using survey method. Data was analysed in terms of quantity of institutional archives increased during last six years, countrywise contents of institutional archives, types of materials archived, subject coverage, software used, language of interface of institutional archives, host domains, and policy of institutional archives. The results of the study suggest healthy growth in terms of quantity of institutional archives' increase worldwide, however, the development is more prevalent in developed countries than developing countries. The subject analysis of the institutional archives indicates that the contributors in the field of health and medicine are more interested to submit their materials in repositories. Currently the institutional archives mostly house traditional (print-oriented) scholarly publications and grey literature, using DSpace software and most of these materials were of English language. However, the policy of content inclusion, submission and preservation is yet to be well defined in institutional archives
Status of Institutional Repositories in Asian Countries: A Quantitative Study
No full textICT and availability of open sources software packages has enabled most of the institutions to maintain institutional repository or archive to collect, preserve, and make accessible the intellectual output created by their scholarly communities. There are more than 1800 Institutional Repositories (IRs) world wide of which more than 50% are in USA, UK, Germany and Spain. There has been relatively little systematic examination of the actual state of deployment of IRs in Asian countries. This study attempts to identify the present status of IRs in the countries of Asia. Data of repositories was collected from various directories of IRs. Data is analyzed in terms of quantity of IRs increased during last five years, country-wise IRs and number of objects, types of materials archived, subject coverage, software used, language of interface, host domains, and policy maaters. The results of the study suggest healthy growth in terms of quantity of IRs in Asian countries. The subject analysis of the IRs indicates that the institutes in the field of sciences and technology are more interested to create IRs than social sciences, arts and humanities. Currently the IRs mostly housed traditional (print-oriented) scholarly publications and grey literature, using DSpace software and most of these materials were of English language. However, the policy of content inclusion, submission and preservation is yet to be well defined in IRs
Performance based assessment of retrofits for wood-frame housing in San Francisco
No full textThesis (M. Eng.)--Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2013.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Cataloged from student-submitted PDF version of thesis. Page [125] blank.Includes bibliographical references (pages 123-124).Prevalent seismic hazards in the San Francisco Bay Area region require the building stock to be able to withstand frequent ground accelerations while maintaining life-safety standards. Most housing in the City of San Francisco is more than a century old and unable to comply with the increasingly stringent code requirements. Wood-frame multi-unit structures in the City are especially vulnerable to ground movement due to soft-stories located on the first level, which makes structural retrofit a necessary means to safeguard lives and prevent building collapse. This study conducts a performance based seismic assessment to an eight-unit, four-story woodframe structure typical in San Francisco to appraise the building's response to incremental seismic mitigation strategies. The goal of the research is to optimize retrofit based on minimization of lifetime damage costs due to seismic impacts. The investigation seeks to evaluate performance of existing urban housing through the application of a seismic assessment methodology typically used for new construction or high stake buildings. The performance assessment uses a simplified procedure delineated by Ghisbain,1 decreasing the computational intensity of the simulations and affording more retrofit iterations for design optimization. Results show that lifetime damage can be significantly reduced for the considered wood-frame building with applied retrofits, and that minimization of lifetime losses corresponds to augmented retrofit costs. The research concludes with a discussion on prescribing retrofits for a building's longevity versus recommendations for short-term solutions that only call for the structure to fall within code-required life-safety limits. Long-term cost implications can vary greatly, which has necessitated this comprehensive evaluation of the wood-frame structure's behavior and lifetime damages such that it can be conveyed to stakeholders and decision-makers for meaningful planning towards the City's resilience.by Zahraa Nazim Saiyed.M.Eng
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