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Tytuł:
Mg-ZrO2 nanocomposite: relative effect of reinforcement incorporation technique
Autorzy:
Hassan, S. F.
Powiązania:
https://bibliotekanauki.pl/articles/352756.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
processing
nanocomposite
magnesium
microstructure
tensile properties
Opis:
In tins study, ingot metallurgy and powder metallurgy processes were used to incorporate 0.2 and 0.7 vol% of nano-size ZrO2 particles reinforcement to develop magnesium nanocomposite. Both of the processing methods led to reasonably fair reinforcement distribution, substantial gram refinement and minimum porosity in the nanocomposites. Strengthening effect of nano-ZrO2 reinforcement in the magnesium matrix was greater when incorporated using the ingot metallurgy process. The matrix ductility and resistance to fracture were significantly improved due to the presence of nano-ZrO2 reinforcement when incorporated using the powder metallurgy process. Tensile fracture surfaces revealed that the less-ductile cleavage fracture mechanism of hexagonal close packed magnesium matrix has changed to more ductile mode due to the presence of nano-ZrO2 particles in all the processed nanocomposites.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 3; 1521-1528
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biogas Recovery from Refinery Oily Sludge by Co-Digestion Followed by Sustainable Approach for Recycling the Residual Digestate in Concrete Mixes
Autorzy:
Jasim, Hassan S.
Ismail, Zainab Z.
Powiązania:
https://bibliotekanauki.pl/articles/2204865.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
co-digestion
biogas recovery
methane
Gompertz model
oily sludge
refinery oily sludge
concrete
Opis:
This study investigated the potential of biogas recovery from refinery oily sludge (ROS) inoculated with animals’ manure by co-digestion of in lab-scale biodigesters at mesophilic conditions. Cow dung (CD), cattle manure (CM), and poultry manure (PM) were utilized as co-substrates. The biogas production from the co-digestion process exceeds its production from uninoculated ROS by approximately 67.5 %, 22.13% and 21.6% for PM, CM, and CD, respectively. Kinetics of the co-digestion process was well described by the modified Gompertz model. The predicted and experimental values of biogas production were well fitted with R2 > 0.96, suggesting favorable conditions of the digestion process. New approach for recycling the residual digestate to replace freshwater in concrete mixes was carried out. Results of examining the mechanical properties of the residual digestate-modified concrete mixes demonstrated a potential sustainable approach for the disposal of residual digestate in concrete mixes.
Źródło:
Advances in Science and Technology. Research Journal; 2022, 16, 5; 178--191
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determinants of Enterprise Resource Planning adoption on organizations performance among medium enterprises
Czynniki warunkujące pomyślne wdrożenie ERP w średniej wielkości przedsiębiorstwie
Autorzy:
Aremu, A. Y.
Shahzad, A.
Hassan, S.
Powiązania:
https://bibliotekanauki.pl/articles/361713.pdf
Data publikacji:
2018
Wydawca:
Wyższa Szkoła Logistyki
Tematy:
Enterprise Resource Planning
organizational structure
technological change
firms performance
medium-sized enterprises
planowanie zasobów przedsiębiorstwa
struktura organizacyjna
zmiana technologiczna
sposób działania przedsiębiorstwa
przedsiębiorstwo średniej wielkości
Opis:
Background: Enterprise Resource Planning (ERP) is a method of using computer system technology to integrate all functions in various departments, such as marketing, inventory control, accounting and human resource across an entire company. ERP system intends to facilitate information sharing, business planning, and decision making in enterprises organization. This study proposes a theoretical framework that will determine the factors affecting ERP system adoption among medium-sized enterprise firms based on a case study. Methods: This present study applied resource based value and contingency theories to explain the factors that affect ERP system adoption and firm's performance. The study proposes a framework which was prepared on the basis of results obtained from the questionnaire research. The specially prepared questionnaire was distributed to 217 companies of various medium sizes, located in Oyo State, Nigeria. CEO / MD and managers were selected as the key respondents of the questionnaire. After the completion of data collection, the empirical data were analyzed using the Partial Least Squares Structural Equation modelling. Results: The result reveals that organizational structure and technological change have a significant influence on the adoption of the ERP system to improve the performance of medium size enterprise firms. In this regard, the effectiveness of ERP system adoption would strongly affect a firm's performance. Conclusions: This paper proposes an enhanced theoretical framework that examines the vital issues concerning ERP system factors of adoption, thus, providing valuable outcomes for medium-sized enterprise firms. The originality of the paper is supported by its three-dimensional approach.
Wstęp: ERP (Enterprise Resource Planning) jest metodą stosująca komputerowe systemy do zintegrowania wszystkich funkcji różnych działów przedsiębiorstwa, takich jak marketing, logistyka, księgowość i zarządzanie zasobami ludzkimi. System ERP ułatwia dzielenie się informacjami, planowanie działań przedsiębiorstwa oraz proces podejmowania decyzji biznesowych w obrębie organizacji przedsiębiorstwa. W prezentowanej pracy został zaproponowany schemat ramowy określający czynniki determinujące i wpływające na wdrożenie systemu ERP w średnich przedsiębiorstwach w oparciu o przeprowadzone studium przypadku. Metody: W pracy zastosowano teorię wartości i przypadkowości w celu wyjaśnienia czynników wpływających na pozytywne wdrożenie systemu ERP w przedsiębiorstwie. Dane potrzebne do analizy zostały zebrane w trakcie badania ankietowego. Specjalnie przygotowane w tym celu kwestionariusze zostały przekazane do 217 przedsiębiorstw średniej wielkości, zlokalizowane w stanie Oyo w Nigerii. Osoby szczebla zarządzającego byli wybrani jako główni odbiorcy tej ankiety. Dane zebrane w ten sposób poddano następnie analizie statycznej przy użyciu modelu częściowych najmniejszych kwadratów. Wyniki: Dane uzyskane podczas badania wskazują, że struktura organizacyjna ma istotny wpływ na pozytywne wdrożenie systemu ERP poprzez wzrost efektywności działania firm. Również istotny wpływ na pozytywne wdrożenie systemu ERP i w konsekwencji wzrost efektywności działania firmy ma zmiana technologiczna. Wnioski: W pracy zaprezentowano teoretyczne ramy badania wpływu różnych czynnik na pozytywne wdrożenie system ERP w przedsiębiorstwach średniej wielkości, co przekłada się na wzrost ich efektywności działania. Nowością pracy jest trójwymiarowe podejście do analizy.
Źródło:
LogForum; 2018, 14, 2; 245-255
1734-459X
Pojawia się w:
LogForum
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Use of Trichoderma Hamatum for Biocontrol of Lentil Vascular Wilt Disease: Efficacy, Mechanisms of Interaction And Future Prospects
Autorzy:
El-Hassan, S.A.
Gowen, S.R.
Pembroke, B.
Powiązania:
https://bibliotekanauki.pl/articles/65520.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Opis:
Trichoderma hamatum (Bonord.) Bainier was evaluated for its antagonistic potential against Fusarium oxysporum Schlecht. emend. Snyder and Hansen sp. lentis, the causal agent of vascular wilt disease of lentil (Lens culinaris Medikus). Hyphal interactions on Petri plates resulted in an increase in the number of conidial spores and an increase in the vegetative growth of T. hamatum, and a decrease in the hyphal formation and sporulation of F. oxysporum f. sp. lentis. Electron and light microscopical observations suggested that hyphae of T. hamatum established aggressive contact and attachment with the hyphae of the pathogen. Growing in parallel, coiled densely and tightly, T. hamatum may penetrate those of the pathogen hyphae causing collapse due to the loss of turgor pressure. The cellulolytic enzymes produced by T. hamatum presented sufficient characteristics for its antifungal activity in the hyphae hydrolysis and competition process. In growth room and glasshouse experiments, the addition of the conidial suspension of T. hamatum or its culture filtrate to soil, significantly (p ≤ 0.05) reduced development and spore germination of F. oxysporum. In the rhizosphere, T. hamatum occupied the same ecological niches (rhizosphere, roots, and stems) parasitizing F. oxysporum f. sp. lentis. Treatments using T. hamatum delayed the time of infection by F. oxysporum, promoted the growth, and increased the dry weight of a susceptible variety of lentil (cv. Precoz). The percent of mortality was reduced to 33 and 40% when using T. hamatum and its filtrate, respectively, compared to 93% in the control treatment during the 65 days of growing in loam/sand (2:1 vol/vol) under glasshouse conditions. Plant colonization results indicate that T. hamatum and its filtrate significantly (p ≤ 0.05) reduced development of the pathogen in the vascular tissue of lentil to < 30 and < 40% stem colonization, respectively, compared to 100% in the plant pathogen control. Our results suggest that potential biocontrol mechanisms of T. hamatum towards F. oxysporum f. sp. lentis were antibiosis by production of antifungal enzymes, complex mechanisms of mycoparasitism, competition for key nutrients and/or ecological niches, growth promotion, and a combination of these effects. This study results hold important suggestions for further development of effective strategies of the biological control of Fusarium vascular wilt of lentil.
Źródło:
Journal of Plant Protection Research; 2013, 53, 1
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Does Hausa Really Have Infixation?
Autorzy:
Al-Hassan, Bello S.Y.
Powiązania:
https://bibliotekanauki.pl/articles/969749.pdf
Data publikacji:
2011-12-10
Wydawca:
Uniwersytet Warszawski. Wydział Orientalistyczny. Katedra Języków i Kultur Afryki
Tematy:
infixation
Hausa language
Opis:
Hausa is often indicated with the three most common types of affix, viz. prefix, infix and suffix. Whereas the availableness of prefixes and suffixes in the language is not in doubt, that of infixes may have resulted from erroneous perspectives. The so-called infixes in Hausa are, in truth, a relay of suffixes that became obscured by phonology or deletion, envisaged parallactically as infixation. In two other instances, infixation either arose as a simple case of unscrupulous use of terminology or was established on a seemingly irrelevant premise, namely the non-occurrence of a tonal phenomenon. Conclusively, the existence of infixation in Hausa is extra-evidential, and therefore questionable.
Źródło:
Studies in African Languages and Cultures; 2011, 45; 7-21
2545-2134
2657-4187
Pojawia się w:
Studies in African Languages and Cultures
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Induction of hemolysis and eryptosis by occupational pollutant nickel chloride is mediated through calcium influx and p38 MAP kinase signaling
Autorzy:
Alfhili, Mohammad A.
Alamri, Hassan S.
Alsughayyir, Jawaher
Basudan, Ahmed M.
Powiązania:
https://bibliotekanauki.pl/articles/2085691.pdf
Data publikacji:
2022-02-15
Wydawca:
Instytut Medycyny Pracy im. prof. dra Jerzego Nofera w Łodzi
Tematy:
calcium
p38 MAPK
oxidative stress
hemolysis
nickel
eryptosis
Opis:
ObjectivesNickel (Ni) is an abundant environmental hazard and an occupational pollutant. Exposure to Ni compounds is prevalent in electroplating workers and in the printing industry, among others. The toxicity of Ni manifests as dermatological, gastrointestinal, respiratory, allergic, and cardiovascular symptoms. In particular, hyperbilirubinemia and reticulocytosis have been detected in intoxicated subjects; an observation possibly implicating selective red blood cell (RBC) toxicity. Herein, the interaction of nickel chloride (NiCl2) with human RBCs and associated molecular mechanisms are described.Material and MethodsCells from healthy donors were incubated for 24 h at 37°C in the presence or absence of 0.5‒10 mM of NiCl2, and cytotoxicity was determined through hemoglobin leakage by colorimetry under different experimental conditions. Eryptotic markers were also identified by flow cytofluorometry using Annexin-V-FITC tagging for phosphatidylserine (PS) exposure, light scatter properties for cellular dimensions, Fluo4/AM labeling for intracellular calcium, and H2DCFDA staining for reactive oxygen species (ROS). Additionally, small molecule inhibitors were used to probe the signaling pathways involved.ResultsIt was found that NiCl2 at 10 mM caused profound intracellular calcium overload and significant calcium-dependent hemolysis. Also, NiCl2 reduced forward scatter and increased side scatter, Annexin-positive cells, and ROS levels. Importantly, NiCl2-induced hemolysis was significantly attenuated by the exclusion of extracellular calcium, and in the presence of p38 MAP kinase (MAPK) inhibitor SB203580.ConclusionsIt is concluded that NiCl2 induces p38 MAPK-dependent hemolysis, and stimulates the canonical features of premature eryptosis. This report presents the first description of the molecular mechanisms underlying the hemolytic and eryptotic potential of NiCl2 and, thus, may explain changes in hematological parameters observed in poisoning victims.
Źródło:
International Journal of Occupational Medicine and Environmental Health; 2022, 35, 1; 1-11
1232-1087
1896-494X
Pojawia się w:
International Journal of Occupational Medicine and Environmental Health
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Transfixation in Hausa: A Hypothetical Analysis
Autorzy:
Al-Hassan, Bello S.Y.
Powiązania:
https://bibliotekanauki.pl/articles/969756.pdf
Data publikacji:
2011-12-10
Wydawca:
Uniwersytet Warszawski. Wydział Orientalistyczny. Katedra Języków i Kultur Afryki
Tematy:
Transfixation
Hausa language
Opis:
The paper deals with the non-contiguous morphs in Hausa which are regarded as the manifestation of transfixation. Transfixation is an Afroasiatic feature that is apparent in Arabic. In the present publication it is also claimed to be evident in Hausa. The similarities between Arabic and Hausa are obvious in such linguistic phenomena as tri-literacy, the upgrading of aberrant roots and the existence in both languages of what are denominated here reduplicative and non-reduplicative transfixations. Transfixation in Hausa differentiates itself from its Arabic counterpart via vowel retention and external transfixation which makes the transfix liable to analysis as suffix in the manner of Newman (2000). But the chief contradistinguishing feature is the non-contiguity principle which establishes the affix as the critical component in the Hausa broken morphology.
Źródło:
Studies in African Languages and Cultures; 2011, 45; 39-58
2545-2134
2657-4187
Pojawia się w:
Studies in African Languages and Cultures
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Regression Model for the Bagging Fatigue of Knitted Fabrics Produced from Viscose/Polyester Blended Rotor Yarns
Model regresji dla oceny wypychania dzianin wykonanych z rotorowych przędz mieszankowych
Autorzy:
Hasani, H.
Hassan Zadeh, S.
Powiązania:
https://bibliotekanauki.pl/articles/232596.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Biopolimerów i Włókien Chemicznych
Tematy:
trykot
struktura tkaniny
parcianka
eksperymentalne wzornictwo
mieszane przędze
knitted fabric
fabric structure
bagging
experimental design
blended yarns
Opis:
The aim of this work was to predict the bagging fatigue percentage of knitted fabrics produced from viscose/polyester blended rotor yarns using blend ratios and structural cell stitch lengths as predictor variables. A simplex lattice design was used to determine the combinations of blend ratios of the fibre types. Knitted fabrics with three different structures were produced from viscose/polyester blended rotor yarns. Mixture-process crossed regression models with two mixture components and one process variable (structural cell stitch lengths, blend ratio) were built to predict the bagging fatigue percentage. All statistical analysis steps were implemented using Design-Expert statistical software. The correlation coefficient between the bagging fatigue percentage predicted and the bagging fatigue percentage observed was 0.983, indicating the strong predictive capability of the regression model built.
Badano wypychanie dzianin wykonanych z wiskozowo-poliestrowych mieszankowych przędz rotorowych. Jako wielkości wejściowe przyjęto procentowy udział włókien w mieszankach splotu. Zastosowano konstrukcję sympleksu dla określenia kombinacji stosunku składników przędzy mieszankowej. Wyprodukowano trzy rodzaje dzianin przy użyciu rożnych mieszanek przędz, utworzono model regresji zawierający dwa składniki mieszanki i jedną zmienną procesu - długość splotu dziewiarskiego. Przeprowadzono analizę statystyczną przy wykorzystaniu programu Design-Expert. Uzyskano bardzo dobrą zgodność pomiędzy wartościami przewidywanymi i pomierzonymi, współczynnik korelacji wynosił 0.983.
Źródło:
Fibres & Textiles in Eastern Europe; 2012, 4 (93); 67-71
1230-3666
2300-7354
Pojawia się w:
Fibres & Textiles in Eastern Europe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Urban planning of Khartoum. History and modernity Part II. Modernity
Urbanistyka Chartumu. Historia oraz współczesność. Część II. Współczesność
Autorzy:
Hassan, S.S.
Kobylarczyk, J.
Kuśnierz-Krupa, D.
Chałupski, A.
Krupa, M.
Powiązania:
https://bibliotekanauki.pl/articles/218374.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Konserwatorów Zabytków
Tematy:
Africa
Sudan
Khartoum
structural development
urban sprawl
density of urban tissue
squat
slums
migrations
African modernism
Doxiadis
McLean
British colony
social segregation
Afryka
rozwój strukturalny
zagęszczenie tkanki miejskiej
slumsy
migracje
modernizm afrykański
Doxiadis McLean
kolonia brytyjska
segregacja społeczna
Opis:
The cosmopolitan centre of Khartoum, built in order to meet the requirements of the British residing there in isolation, was a concept realising the planning vision of a contemporary metropolitan city created on the level differing from the twentieth-century urban-planning principles of the West. Branching off, according to a meticulously planned and controlled scheme, the orthogonal grid of Khartoum with its opposite, chaotic Umm-durman on the other bank of the Nile, within half a century of their existence became proof of the phenomenon which, even today, might be regarded as a utopia. Free from tension, full of cultural contrasts and class differences, the capital of Sudan did not escape the touch of premature old age. A period of prosperity, known from old postcards and sentimental stories, was replaced with another utopia whose vision did not survive the clash with reality. In the second part of work concerning the history and urban development of Khartoum, the Authors presented issues concerning the realisation of urban-planning visions from the 1st and 2nd half of the 20th century. They also drew attention to their consequences and the fact that they constitute a signifi cant legacy for the current generation of urban planners.
Kosmopolityczne centrum Chartumu, zbudowane aby sprostać wymaganiom rezydujących tam w izolacji Brytyjczyków, było koncepcją realizującą planistyczną wizję współczesnego miasta metropolitalnego stworzonego na poziomie nieodbiegającym od dwudziestowiecznych założeń urbanistycznych Zachodu. Rozgałęziająca się według ściśle zaplanowanego i kontrolowanego schematu, ortogonalna siatka Chartumu wraz z zaprzeczającym jej, chaotycznym Umm-durmanem po drugiej stronie Nilu stały się w ciągu półwiecza istnienia dowodem fenomenu, który nawet dziś mógłby być uznany za utopię. Wolna od napięć, pełna kulturowych kontrastów i różnic klasowych stolica Sudanu nie uniknęła dotyku przedwczesnej starości. Czas dobrobytu znany dziś ze starych pocztówek i sentymentalnych opowieści zastąpił czas innej utopii, której wizja nie zniosła zderzenia z rzeczywistością. W drugiej części pracy dotyczącej historii rozwoju urbanistycznego Chartumu autorzy przedstawili problemtykę dotyczącą realizacji wizji urbanistycznych z I i II połowy XX wieku. Zwrócili również uwagę na ich skutki i fakt, że stanowią istotną spuściznę dla współczesnej generacji planistów.
Źródło:
Wiadomości Konserwatorskie; 2017, 52; 140-148
0860-2395
2544-8870
Pojawia się w:
Wiadomości Konserwatorskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nickelization Effect on the High Temperature Tensile Properties of Mg-0.7Y2O3 Nanocomposite
Autorzy:
Hassan, S. F.
Tun, K. S.
Patel, F.
Al-Aqeeli, N.
Gupta, M.
Powiązania:
https://bibliotekanauki.pl/articles/357046.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
magnesium
nanocomposite
high-temperature
tensile strength
deformation
Opis:
In this study, high performance magnesium-yttria nanocomposite’s room temperature, strength and ductility were significantly enhanced by the dispersion of nano-sized nickel particles using powder blending and a microwave sintering process. The strengthening effect of the dispersed nano-sized nickel particles was consistent up to 100°C and then it gradually diminished with further increases in the test temperature. The ductility of the magnesium-yttria nanocomposite remained unaffected by the dispersed nano-sized nickel particles up to 100°C. Impressively, it was enhanced at 150°C and above, leading to the possibility of the near net shape fabrication of the nanocomposite at a significantly low temperature.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 3; 1411-1415
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A comparative study of 2DOF PID and 2DOF fractional order PID controllers on a class of unstable systems
Autorzy:
Bingi, K.
Ibrahim, R.
Karsiti, M. N.
Hassan, S. M.
Harindran, V. R.
Powiązania:
https://bibliotekanauki.pl/articles/229519.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fractional order controller
set-point weighting
2DOF PID
process control
unstable systems
Opis:
The proportional-integral-derivative (PID) controllers have experienced series of structural modifications and improvements. Example of such modifications are set-point weighting and fractional ordering. While the former is to achieve two-degree-of-freedom (2DOF) ability of set-point tracking and disturbance rejection, the latter is to ensure smooth control action. Therefore, this paper reviews various forms of PID controllers and provides a comparative analysis of 2DOF PID and 2DOF fractional order PID (FOPID) controllers. The paper also discusses the conversion of one PID form to another. For the comparative analysis of the various controllers, a class of unstable systems are considered. Simulation result shows that in most cases the conversion from one form to another does not significantly affect the performance of the system. It is also observed that the 2DOF controllers (2DOF PID and 2DOF FOPID) improved significantly the performance of the ordinary PID controllers.
Źródło:
Archives of Control Sciences; 2018, 28, 4; 635-682
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relation between CO2 emissions and crude oil combustion in Iraq
Autorzy:
Hassan, Ahmed S.
Azeez, Hasan M.
Powiązania:
https://bibliotekanauki.pl/articles/35540085.pdf
Data publikacji:
2021
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
CO2 emission
crude oil
CO2 concentration
Iraq
Opis:
Fossil fuel is the main source for CO2 emissions that causes global warming. This fact is the starting point for this paper, that consider on three different sources of data: crude oil used to calculate CO2 emissions for Iraq for the period from 1980 to 2018; annual data of total CO2 emissions available from the Carbon Dioxide Information Analysis Center (CDIAC) for Iraq and the world for the period from 1980 to 2014; and CO2 concentrations for Iraq for the period from 2002 to 2006 and for the world for the period from 1980 to 2018. The result is a multifaceted according to the dataset sources. Carbon dioxide emissions calculated from Iraqi crude oil was increased from 1.29 Mt in 2012 to 1.97 Mt in 2018. The world and Iraq CO2 emissions with different slop of average line that was 0.5 for world, 0.003 for Iraq, while increased exponential function from 2008 to 2014 to reach 36 and 0.17 Mt, respectively. The highest value of Iraqi CO2 concentration was 403 ppm in 2016, while the global CO2 concentrations slowly increased with slop line equal to 1.75 ppm per year, from minimum value of 338.6 ppm was in 1980, while maximum value of 407.05 ppm was in 2018, that’s mean no decreased in CO2 concentration unless emissions addressed.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2021, 30, 3; 379-387
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
NADPH oxidase mediated ROS control susceptibility of Arabidopsis plants to a parasite
Autorzy:
Siddique, S.
Matera, C.
Hassan, S.
Sobczak, M.
Rozanska, E.
Gutbrod, P.
Grundler, F.
Powiązania:
https://bibliotekanauki.pl/articles/81102.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
conference
NADPH oxidase
reactive oxygen species
pathogen infection
programmed cell death
plasma membrane
plant-pathogen interaction
parasitic nematode
Arabidopsis
plant parasite
Źródło:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796
Pojawia się w:
BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Urban planning of Khartoum. History and modernity. Part I. History
Urbanistyka Chartumu. Historia oraz współczesność. Część I. Historia
Autorzy:
Hassan, S.S.
Elkheir, O.
Kobylarczyk, J.
Kuśnierz-Krupa, D.
Chałupski, A.
Krupa, M.
Powiązania:
https://bibliotekanauki.pl/articles/960302.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Konserwatorów Zabytków
Tematy:
Sudan
Khartoum
spatial development
history
Chartum
rozwój przestrzenny
historia
Opis:
This article is the first part of a study concerning the spatial development of Khartoum and addresses the issue of the city’s origins and history. Khartoum is the capital of Sudan and the main political, commercial and cultural centre of the country. The city, founded in the 19th century, at the confluence of the White and the Blue Nile, is an example of a fascinating urban structure consisting of three independently functioning centres: Khartoum, Umm-Durman and Khartoum North.
Niniejszy artykuł jest pierwszą częścią opracowania dotyczącego rozwoju przestrzennego Chartumu i podejmuje problematykę genezy oraz historii powstania miasta. Chartum jest stolicą Sudanu oraz głównym ośrodkiem politycznym, handlowym i kulturalnym tego kraju. Miasto, założone w wieku XIX, w miejscu połączenia Białego i Błękitnego Nilu, jest przykładem ciekawej struktury urbanistycznej, złożonej z trzech, niezależnie funkcjonujących ośrodków: Chartumu, Omdurmanu oraz Chartumu Północnego.
Źródło:
Wiadomości Konserwatorskie; 2017, 51; 86-94
0860-2395
2544-8870
Pojawia się w:
Wiadomości Konserwatorskie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Oscillation behavior of second order nonlinear neutral differential equations with deviating arguments
Autorzy:
Elabbasy, E. M.
Hassan, T. S.
Moaaz, O.
Powiązania:
https://bibliotekanauki.pl/articles/255993.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
oscillation
second order
neutral differential equations
deviating arguments
Opis:
Oscillation criteria are established for second order nonlinear neutral differential equations with deviating arguments of the form [formula] where α > 0 and z(t) = x(t) + p(t)x(t - ϒ). Our results improve and extend some known results in the literature. Some illustrating examples are also provided to show the importance of our results.
Źródło:
Opuscula Mathematica; 2012, 32, 4; 719-730
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The pulmonary involvement in Theileria lestoquardi naturally infected sheep
Autorzy:
El Imam, A.H.
Hassan, S.M.
Gameel, A.A.
El Hussein, A.M.
Taha, K.M.
Powiązania:
https://bibliotekanauki.pl/articles/6255.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Parazytologiczne
Opis:
Malignant Ovine Theileriosis (MOT) caused by Theileria lestoquardi is considered a major constraint for sheep production in many areas of the world including Sudan. Pulmonary oedema is thought to be the main cause of animal death, but the mechanism, the cell types involved and/or the probable cause of this pneumonia has yet to be defined. The present study was carried out to investigate the pulmonary involvement post T. lestoquardi infection and to identify the cell types involved in pneumonia. Apparently healthy sheep were exposed to ticks challenge in T. lestoquardi endemic area. Lungs impression smears and tissue sections for histopathology were processed. At necropsy, fifteen infected sheep revealed severe pneumonia associated with oedema and accumulation of creamygrayish frothy exudates. The microscopic findings of examined lungs showed emphysema, congestion, collapse and proliferation of immense amount of different kinds of cells. The current study indicates that T. lestoquardi infections are accompanied with remarkable pulmonary involvements and may lead to respiratory failure and death.
Źródło:
Annals of Parasitology; 2016, 62, 1
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parameter estimation of exponentiated exponential distribution under selective ranked set sampling
Autorzy:
Hassan, Amal S.
Elshaarawy, Rasha S.
Nagy, Heba F.
Powiązania:
https://bibliotekanauki.pl/articles/2156898.pdf
Data publikacji:
2022-12-15
Wydawca:
Główny Urząd Statystyczny
Tematy:
exponentiated exponential distribution
partial ranked set sampling
neoteric ranked set sampling
maximum likelihood method
Opis:
Partial ranked set sampling (PRSS) is a cost-effective sampling method. It is a combination of simple random sample (SRS) and ranked set sampling (RSS) designs. The PRSS method allows flexibility for the experimenter in selecting the sample when it is either difficult to rank the units within each set with full confidence or when experimental units are not available. In this article, we introduce and define the likelihood function of any probability distribution under the PRSS scheme. The performance of the maximum likelihood estimators is examined when the available data are assumed to have an exponentiated exponential (EE) distribution via some selective RSS schemes as well as SRS. The suggested ranked schemes include the PRSS, RSS, neoteric RSS (NRSS), and extreme RSS (ERSS). An intensive simulation study was conducted to compare and explore the behaviour of the proposed estimators. The study demonstrated that the maximum likelihood estimators via PRSS, NRSS, ERSS, and RSS schemes are more efficient than the corresponding estimators under SRS. A real data set is presented for illustrative purposes.
Źródło:
Statistics in Transition new series; 2022, 23, 4; 37-58
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study the internal cracks effect on vibration of laminated composite square plates
Autorzy:
Hassan, M.S.
Rashid, Z.H.
Sarhan, R.A.
Powiązania:
https://bibliotekanauki.pl/articles/24200571.pdf
Data publikacji:
2022
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
laminate plate
natural frequency
boundary condition
cracked plate
finite element
ANSYS
płyta laminowana
częstotliwość drgań własnych
warunek brzegowy
pęknięta płyta
element skończony
Opis:
Purpose: The study of cracks behaviour in a composite plate is of significant importance in the dynamics of the Mechanical parts in order to avoid design failures due to resonance or high amplitude vibrations. Design/methodology/approach: In this paper, a square glass-epoxy composite plate is adopted. The plate has four layers with symmetric and asymmetric lamination. Assuming the cracks are profound as defects. The results were obtained by using a numerical solution of mechanical APDL from ANSYS. Findings: It has been found for different boundary conditions that the rank of natural frequencies is decreased by increasing the crack ratio due to the reduction of the plate’s stiffness, whereas the crack direction has no mentioned effect for a small angle of rotation. Research limitations/implications: The accuracy of results is verified by comparing a single case of the current work with other previous investigations. value: Evaluate the influence of the crack length ratio, angle of the crack rotation, boundary conditions and lamination angles on the natural frequencies of the square composite plate with glass-epoxy materials.
Źródło:
Archives of Materials Science and Engineering; 2022, 116, 1; 28--33
1897-2764
Pojawia się w:
Archives of Materials Science and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Statistical Properties and Estimation of Power-Transmuted Inverse Rayleigh Distribution
Autorzy:
Hassan, Amal S.
Assar, Salwa M.
Abdelghaffar, Ahmed M.
Powiązania:
https://bibliotekanauki.pl/articles/1058930.pdf
Data publikacji:
2020-09-04
Wydawca:
Główny Urząd Statystyczny
Tematy:
percentiles
Opis:
A three-parameter continuous distribution is constructed, using a power transformation related to the transmuted inverse Rayleigh (TIR) distribution. A comprehensive account of the statistical properties is provided, including the following: the quantile function, moments, incomplete moments, mean residual life function and Rényi entropy. Three classical procedures for estimating population parameters are analysed. A simulation study is provided to compare the performance of different estimates. Finally, a real data application is used to illustrate the usefulness of the recommended distribution in modelling real data.
Źródło:
Statistics in Transition new series; 2020, 21, 3; 93-107
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Approaching of May maximum surface air temperature to characteristic summer season for Baghdad city
Autorzy:
Muter, Sara A.
Kadhum, Jasim H.
Hassan, Ahmed S.
Powiązania:
https://bibliotekanauki.pl/articles/35539647.pdf
Data publikacji:
2021
Wydawca:
Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:
maximum air temperature
summer season
May
Baghdad
Opis:
Seasonal variability is the complex non-linear response of the physical climate system. There are two types of natural variability: those external and internal to the climate system. In any given season, natural variability may cause the climate to be different than its long-term average. This study examines with the seasonal variation of the maximum temperatures during the summer season. In addition, the maximum temperatures in May become close to the characteristics of the summer season. The monthly data for maximum temperature of May, June and July were used from Iraqi Meteorological Organization and Seismology (IMOS) for 47 years from 1970 to 2017 for Baghdad city. This period was long enough to estimate the range of approaching maximum temperature (Tmax) May to summer. Results revealed a significant Tmax for Baghdad during the second period (1992–2017) and ?shown similar behavior of Tmax in May to June and July; on the contrary that first period (1970–1991). In second period, two phases have been found out, positive phase and negative phase. The positive phase were happened in 1995, 1999, and 2006, and the negative phase was four cases (1992, 2004, 2013, and 2016), while a few cases recorded in first period. The amplitudes of monthly variability had same distance of leaner correlation especially in 1999 and 2013 that represent coherent wave with summer seasons. The variance difference for Tmax between May and June approximately was 2°C for second study’s period, while exceed this range in first period. This variance change to 7.5°C when found difference between July and May.
Źródło:
Scientific Review Engineering and Environmental Sciences; 2021, 30, 3; 400-410
1732-9353
Pojawia się w:
Scientific Review Engineering and Environmental Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Molecular identification of different Theileria and Babesia species infecting sheep in Sudan
Autorzy:
El Imam, A.E.
Hassan, S.M.
Gameel, A.A.
El Hussein, A.M.
Taha, K.M.
Oosthuizen, M.C.
Powiązania:
https://bibliotekanauki.pl/articles/5972.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Parazytologiczne
Opis:
The epidemiological aspects of sheep piroplasmosis in Sudan are poorly studied, and further investigations using sensitive and precise techniques are required. In this study, the Reverse Line Blot (RLB) hybridization assay was used to detect and simultaneously differentiate between Theileria and Babesia species. DNA was extracted from blood collected on filter paper (n=219) from apparently healthy sheep from six different geographical localities in Sudan. Results indicated that Theileria ovis (88.6%), T. separata (20.1%), T. lestoquardi (16.4%) and T. annulata (16.4%) DNA could be detected in the blood samples. Single and mixed Theileria infections were detected in 74 (33.8%) and 124 (56.6%) respectively and T. ovis being the most prevalent species in the country. T. ovis and T. separata were reported for the first time in sheep in Sudan.
Źródło:
Annals of Parasitology; 2016, 62, 1
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance analysis of a CDMA wireless local loop systems
Autorzy:
Hassan, E. S.
El-Dolil, S. A.
Dessouky, M. I.
Powiązania:
https://bibliotekanauki.pl/articles/378461.pdf
Data publikacji:
2006
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technologii Elektronowej
Opis:
In this paper, the capacity of the Code Division Multiple Access Wireless Local Loop (CDMA WLL) sysytem is analytically derived, and the capacity gain achieved in a CDMA WLL over a cellular mobile environment is calculated. The results show that the CDMA WLL system can support up to 36% more users than CDMA cellular mobile system. The paper also propose a new approach to increase the reverse lonk capacity of the CDMA WLL system, which synchronize the reverse link so that signals transmitted from different subscriber units within the same cell are time aligned at the base station )BS). A theoretical analysis of the potential capacity gain of reverse link synchronous CDMA WLL is presented.
Źródło:
Electron Technology : Internet Journal; 2005-2006, 37/38, 3; 1-7
1897-2381
Pojawia się w:
Electron Technology : Internet Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Estimation of the density and cumulative distribution functions of the exponentiated Burr XII distribution
Autorzy:
Hassan, Amal S.
Assar, Salwa M.
Ali, Kareem A.
Nagy, Heba F.
Powiązania:
https://bibliotekanauki.pl/articles/1917020.pdf
Data publikacji:
2021-12-08
Wydawca:
Główny Urząd Statystyczny
Tematy:
exponentiated Burr Type XII model
least squares estimator
maximum likelihood estimator
uniform minimum variance unbiased estimator
weighted least squares estimator
Opis:
The exponentiated Burr Type XII (EBXII) distribution has wide applications in reliability and economic studies. In this article, the estimation of the probability density function and the cumulative distribution function of EBXII distribution is considered. We examine the maximum likelihood estimator, the uniformly minimum variance unbiased estimator, the least squares estimator, the weighted least squares estimator, the maximum product spacing estimator, the Cramér–von-Mises estimator, and the Anderson–Darling estimator. We derive analytical forms for the bias and mean square error. A simulation study is performed to investigate the consistency of the suggested methods of estimation. Data relating to the wind speed and service times of aircraft windshields are used with the studied methods. The simulation studies and real data applications have revealed that the maximum likelihood estimator performs more efficiently than its remaining counterparts.
Źródło:
Statistics in Transition new series; 2021, 22, 4; 171-189
1234-7655
Pojawia się w:
Statistics in Transition new series
Dostawca treści:
Biblioteka Nauki
Artykuł
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