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Wyszukujesz frazę "Ali, T." wg kryterium: Autor


Tytuł:
Determination of Accumulated Electrons at PET Surface Using Mirror Effect Phenomena in SEM
Autorzy:
Abood, Tareq H.
Hadi, Hasan A.
Mohi, Ali T.
Powiązania:
https://bibliotekanauki.pl/articles/1192591.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Polyethylene Terephthalate
scanning electron microscope
Magnification Factor Method
Disappearing Method
Opis:
An experimental-theoretical investigation have been presented to exploring phenomena of mirror effect. The Polyethylene Terephthalate (PET) material is chosen to be a case study throughout this work. Where the scanning electron microscope (SEM) is used for executing the experiments. Attention has been focused on determination of the number of electrons that accumulated at PET surface, since it is regarded to be the most important factor for producing mirror effect images. Thus two different procedures are produced to achieve such a task namely Magnification Factor Method and Disappearing Method. Results obtained from these two approaches have clearly shown that mirror effects can accurately be used as an excellent tool to determine dielectric constant of insulator.
Źródło:
World Scientific News; 2016, 55; 27-37
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation and selection process of suppliers through analytical framework: an emprical evidence of evaluation tool
Autorzy:
Imeri, S.
Shahzad, K.
Takala, J.
Liu, Y
Sillanpää, I.
Ali, T.
Powiązania:
https://bibliotekanauki.pl/articles/407383.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
supplier evaluation
supplier performance management
supplier selection model
principal component analysis
supply chain management
Opis:
The supplier selection process is very important to companies as selecting the right suppliers that fit companies strategy needs brings drastic savings. Therefore, this paper seeks to address the key area of supplies evaluation from the supplier review perspective. The purpose was to identify the most important criteria for suppliers’ evaluation and develop evaluation tool based on surveyed criteria. The research was conducted through structured questionnaire and the sample focused on small to medium sized companies (SMEs) in Greece. In total eighty companies participated in the survey answering the full questionnaire which consisted of questions whether these companies utilize some suppliers’ evaluation criteria and what criteria if any is applied. The main statistical instrument used in the study is Principal Component Analysis (PCA). Thus, the research has shown that the main criteria are: the attitude of the vendor towards the customer, supplier delivery time, product quality and price. Conclusions are made on the suitability and usefulness of suppliers’ evaluation criteria and in way they are applied in enterprises.
Źródło:
Management and Production Engineering Review; 2015, 6, 3; 10-20
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Measurement of Natural radioactivity in tap water samples for selected regions in Thi-Qar Governorate - Iraq
Autorzy:
Hadi, Hasan A.
Karim, Mahmood S.
Mahi, Ali T.
Abood, Tareq H.
Powiązania:
https://bibliotekanauki.pl/articles/1192660.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
(HPGe) detector
Thi-Qar governorate
tap water
specific activity
radionuclides
Opis:
In the present work, we have measured specific activity concentrations in ten tap water samples for selected regions in Thi-Qar governorate by using high purity germanium (HPGe) detector. The results have shown that, the specific activity, for 238U was ranged from (0.65±0.8 Bq/kg) in AL- Nasir region to (1.32±0.7.8 Bq/kg) in AL-Refai region, for 232Th the specific activity was ranged from (0.120±0.34 Bq/kg) in AL-Garraf region to (0.980±0.99 Bq/kg) in AL- Dwaya region, for 40K the specific activity was ranged from (13.33±3.6 Bq/kg) in AL-Nasir region to (38.54±6.2 Bq/kg) in (AL-Garraf) region, with an average values of (0.933±0.16 Bq/kg), (0.737±0.17 Bq/kg), (24.451±7.5Bq/kg), for 238U, 232Th and 40K, respectively. In order to asses the radiological hazards of the radioactivity in tap water, we have been calculated the parameters (Raeq , DƔ, AEDin , AEDout , EAD , Iɣ , Hin and Hex).
Źródło:
World Scientific News; 2016, 47, 2; 112-122
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of the etching time and current density on Capacitance-Voltage characteristics of P-type of porous silicon
Autorzy:
Hadi, Hasan A.
Abood, Tareq H.
Mohi, Ali T.
Karim, Mahmood S.
Powiązania:
https://bibliotekanauki.pl/articles/1178661.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
electrochemical etching
heterojunction
porous silicon
thin films
Opis:
In This paper, electrochemical etching teqniques was using to formation of nano crystalline porous silicon layer on p-type Si substrates. Measurement of capacitance – voltage characteristics at various etching time and current densities were used for calculated built in voltage and type of heterojunction. The built in voltage values were decreased with increasing etching time and current densities for both anisotype Al/PS/p-Si/Al heterojunction. These characteristics are interpreted by assuming the abrupt heterojunction model. The effect of different etching time and current densities on electrical properties of PS have been investigated.
Źródło:
World Scientific News; 2017, 67, 2; 149-160
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental and Theoretical Investigation to Study the Molecular Structure, Electronic Properties, UV–Vis Spectra of Coumarin 102
Autorzy:
Mohi, Ali T.
Abood, Tareq H.
Hadi, Hasan A.
Karim, Mahmood S.
Mutlik, Falah A-H.
Alwan, Tariq J.
Powiązania:
https://bibliotekanauki.pl/articles/1178533.pdf
Data publikacji:
2017
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
DFT
Ionization potential
TDDFT
electron affinity
energy gap and UV spectra
Opis:
In this work, we study the structure, electronic properties and electronic spectra of Coumarin 102 (C102) dissolved in ethanol as an experimental-theoretical investigation. The various properties of the ground and excited electronic states of coumarins 102 using density functional theory (DFT) and time-dependent density functional theory (TDDFT) was calculated by the B3LYP density functional model with 6-31G(d,p) basis set by Gaussian 09 W program. Spectral characteristics of coumarin 102 have been probed into by methods of experimental UV-visible, and quantum chemistry. The UV spectrum was measured in Ethanol. The optimized structures, total energies, electronic states (HOMO- LUMO), energy gap, ionization potentials, electron affinities, chemical potential, global hardness, softness, global electrophilictity, dipole moment and electrostatic potential was calculated. were calculated. We find good agreement between experimental data of UV spectrum and TDDFT excitation energies.
Źródło:
World Scientific News; 2017, 70, 2; 216-229
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Miniature size multiband planar patch antenna fabricated on a bioplastic substrate
Autorzy:
Ahsan, M. R.
Islam, M. T.
Ullah, M. H.
Arshad, H.
Ali, M. T.
Powiązania:
https://bibliotekanauki.pl/articles/199786.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
bioplastic substrate material
multiband antenna
planar patch antenna
RFID
C/X band
WiMAX application
substrat
antena szerokopasmowa
C/X
aplikacja WiMAX
Opis:
In this article, a simple design of rectangular microstrip feed planar antenna with wide arcs and square shape slot is proposed for Radio Frequency Identification (RFID),Worldwide Interoperability for Microwave Access (WiMAX) and C/X-band wireless communications. The prototype of the antenna has been fabricated 1.0 mm thick ceramic filled bioplastic substrate by using optimal dimension obtained from design/simulations and antenna performances are experimentally tested. The experimental results confirm the impedance bandwidths for S11 ≤ −10 dB are of 712 MHz (0.355-1.067 GHz), 1.38 GHz (2.92-4.3 GHz) and 2.46 GHz (6.55-9.01 GHz) for 0.788, 3.34 and 8.01 GHz band respectively. The proposed antenna shows almost steady and symmetrical radiation patterns for all three bands with the maximum gains of 1.37, 2.8 and 3.56 dBi respectively. Based on the antenna performances, it can successfully cover the frequency band requirement for RFID, WiMAX and C/X-band applications.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2015, 63, 4; 971-976
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ergasilus boleophthalmi sp. n. (Copepoda: Ergasilidae) parasitic on gobiid fishes from Shatt Al-Basrah Canal, South of Iraq
Autorzy:
Adday, T.
Ali, A.
Powiązania:
https://bibliotekanauki.pl/articles/840611.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Ergasilus boleophthalmi
Copepoda
Ergasilidae
parasite
gobiid fish
Shatt Al-Basrah Canal
Iraq
animal parasite
Gobiidae
Boleophthalmus dussumieri
Bathygobius fuscus
mudskipper
dusky frillgoby
fish
new species
Źródło:
Annals of Parasitology; 2011, 57, 3
0043-5163
Pojawia się w:
Annals of Parasitology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Ergasilus boleophthalmi sp. n. (Copepoda: Ergasilidae) parasitic on gobiid fishes from Shatt Al-Basrah Canal, South of Iraq
Autorzy:
Adday, T.
Ali, A.
Powiązania:
https://bibliotekanauki.pl/articles/2143376.pdf
Data publikacji:
2011
Wydawca:
Polskie Towarzystwo Parazytologiczne
Tematy:
Ergasilus boleophthalmi
Copepoda
Ergasilidae
parasite
gobiid fish
Shatt Al-Basrah Canal
Iraq
animal parasite
Gobiidae
Boleophthalmus dussumieri
Bathygobius fuscus
mudskipper
dusky frillgoby
fish
new species
Opis:
A new species of Ergasilus von Nordmann, 1832 (Copepoda: Ergasilidae) parasitic on the gills of two gobiid fishes Boleophthalmus dussumieri Valenciennes and Bathygobius fuscus (Rüppell, 1930) from Shatt Al-Basrah Canal, Iraq, is described. The new species differs from all its congeners by a combination of character states including the shape of the body, and the structure and armature of the swimming legs.
Źródło:
Wiadomości Parazytologiczne; 2011, 57, 3; 137-142
0043-5163
Pojawia się w:
Wiadomości Parazytologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Factors determining Italian online shoppers’ preference of cash on delivery : empirical analysis
Czynniki określające preferencje włoskich kupujących online w przypadku CoD : analiza empiryczna
Autorzy:
Pencarelli, T.
Škerháková, V.
Ali Taha, V.
Valentiny, T.
Powiązania:
https://bibliotekanauki.pl/articles/406075.pdf
Data publikacji:
2018
Wydawca:
Politechnika Częstochowska
Tematy:
e-shop
online shoppers
preferences
payment method
cash-on-delivery
e-sklep
klienci online
preferencje
sposób płatności
gotówka przy odbiorze
Opis:
In recent years, there is a significant expansion of online-shopping which creates the need for a thorough marketing analysis of online customer behavior. The study examines the factors influencing Italian online shoppers’ preferences of a particular payment method, precisely, it investigates the use of cash-on-delivery as a preferred payment method among Italian online shoppers. We consider both the impact of online shopping trends of the population and the impact of the determinants affecting e-shop preferences on cash-on-delivery preference while shopping online. Research based on primary data obtained through a self-administered questionnaire among Italian online shoppers revealed that improving e-shop’s reputation and online support leads to a decrease in the probability of using cash-on-delivery as a payment method.
W ostatnich latach obserwuje się znaczną ekspansję zakupów online, co wymaga dokładnej analizy marketingowej zachowań klientów online. W badaniu przeanalizowano czynniki wpływające na preferencje włoskich klientów internetowych dotyczące konkretnej metody płatności, a dokładnie analizowano wykorzystanie płatności gotówkowych jako preferowanej metody płatności wśród włoskich kupujących online. Uwzględniono zarówno wpływ trendów zakupowych online, jak i wpływ czynników określających preferencje sklepów internetowych na preferencje dotyczące gotówki przy dostawie podczas zakupów online. Badania oparte na danych pierwotnych uzyskanych za pomocą samodzielnie przeprowadzonego kwestionariusza wśród włoskich kupujących online wykazały, że poprawa reputacji e-sklepu i obsługi online prowadzi do zmniejszenia prawdopodobieństwa użycia metody płatności za pobraniem jako metody płatności.
Źródło:
Polish Journal of Management Studies; 2018, 18, 2; 245-258
2081-7452
Pojawia się w:
Polish Journal of Management Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Frequency Offset Compensation for OFDM Systems Using a Combined Autocorrelation and Wiener Filtering Scheme
Autorzy:
Ramadan Ali, A.
Khanzada, T. J.
Omar, A.
Powiązania:
https://bibliotekanauki.pl/articles/308065.pdf
Data publikacji:
2010
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
channel characterization
frequency offset
OFDM measurement
Wiener filtering
Opis:
One of the orthogonal frequency division multiplexing (OFDM) system disadvantages is its sensitivity to frequency offset and phase noise, which lead to losing the orthogonality between the subcarriers and thereby degrade the system performance. In this paper a joint scheme for frequency offset and pilot-based channel estimation is introduced in which the frequency offset is first estimated using an autocorrelation method, and then is fined further by applying an iterative phase correction by means of pilot-based Wiener filtering method. In order to verify the capability of the estimation algorithm, the scheme has been implemented and tested using a real measurement system in a multipath indoor environment. The results show the algorithm capability of compensating for the frequency offset with different transmission and channel conditions.
Źródło:
Journal of Telecommunications and Information Technology; 2010, 1; 40-47
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Phytoextraction of Cr by maize (Zea mays L.) : the role of plant growth promoting endophyte and citric acid under polluted soil
Autorzy:
Ali, J.
Mahmood, T.
Hayat, K.
Afridi, M. S.
Ali, F.
Chaudhary, H. J.
Powiązania:
https://bibliotekanauki.pl/articles/204568.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
maize
phytoextraction
chromium
citric acid
Burkholderia vietnamiensis
Opis:
High chromium (Cr) toxicity has turned into a serious environmental concern. Cr contaminated agronomic soils negatively affect the growth and yield of crops. Current research was conducted to enhance the phytoextraction potential of maize by using Burkholderia vietnamiensis and citric acid (CA). Plants were subjected to three concentrations of Cr (0.86, 350, and 500 ppm). A pot experiment was conducted under greenhouse conditions with completely randomized design (CRD). After 72 days of experiment, plants were harvested to analyze the morphological and biochemical attributes of soil, bacteria and plant. Results revealed that plant fresh, dry biomass, root, shoot length and chlorophyll contents significantly increased by 56%, 50%, 58%, 78% and 60%, respectively, at 500 ppm Cr concentration in combine treatment of B. vietnamiensis and CA. Maize plants treated with both B. vietnamiensis and CA significantly increased the bioaccumulation (BA) of Cr up to 50% and translocation factor (TF) by 31%. Furthermore, superoxide dismutase (SOD), proline and peroxidase dismutase (POD) activities in leaves were markedly increased by 30%, 42% and 15%, respectively, when treated with CA. Current study reveals that exogenous co-application of B. vietnamiensis + CA enhance plant growth by alleviating heavy metal stress and accelerate the phytoextraction of Cr. Taking into account the heavy metal tolerance and accumulation capacity, Zea mays is suitable for phytoremediation of contaminated soils in combination with B. vietnamiensis and CA.
Źródło:
Archives of Environmental Protection; 2018, 44, 2; 73-82
2083-4772
2083-4810
Pojawia się w:
Archives of Environmental Protection
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Water supply performance evaluation of the public service of drinking water Case study: East of Algeria
Ocena działania publicznych służb zaopatrzenia w wodę pitną – przykład wschodniej Algierii
Autorzy:
Boutebba, Khereddine
Bouamrane, Ali
Ganaoui, Nawel
Bouziane, Mohamed T.
Powiązania:
https://bibliotekanauki.pl/articles/293270.pdf
Data publikacji:
2019
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
correspondence factor analysis (CFA)
GIS
performance evaluation
public service
survey
ankieta
czynnikowa analiza korespondencji (CFA)
ocena działania
usługi publiczne
Opis:
This article presents the results of a survey using a questionnaire conducted in Algeria, to evaluate the quality of public drinking water service, and at the same time the level of dissatisfaction / satisfaction of the subscribers. A statistical analysis of the data has been conducted on a representative sample of general population to identify weaknesses and strengths related to the current state of water management. The assessment of the quality of service, and the quality of water, as well as the price of water under the influence of the geographical distribution of the population was also studied. The results of the statistical analyses show a wide variability regarding the level of dissatisfaction/satisfaction of the subscribers. In order to simplify the interpretation, we gathered the results in the form of classes and groups in such way that the cities appear on GIS mapping software, with their inhabitants’ degree of satisfaction.
W artykule przedstawiono wyniki ankiety przeprowadzonej w Algierii metodą kwestionariuszy celem oceny jakości usług publicznego zaopatrzenia w wodę, a tym samym satysfakcji/niezadowolenia ankietowanych. Statystyczną analizę danych przeprowadzono na reprezentatywnej próbie generalnej populacji, aby określić mocne i słabe strony bieżącego stanu gospodarki wodnej. Przeprowadzono także ocenę jakości usług, jakości wody i ceny wody w odniesieniu do geograficznego rozmieszczenia ludności. Wyniki analiz statystycznych wskazują na duże zróżnicowanie poziomu satysfakcji/niezadowolenia ankietowanych. Aby uprościć interpretację, zebrano wyniki w postaci grup i klas w taki sposób, że miasta pojawiają się w graficznym programie GIS wraz z poziomem satysfakcji ich mieszkańców.
Źródło:
Journal of Water and Land Development; 2019, 40; 53-58
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis and Simulation Performance of a Reverse Osmosis Plant in the Al-Maqal Port
Autorzy:
Yousif, Yasameen T.
Abbas, Abdulhussain A.
Yaseen, Dina Ali
Powiązania:
https://bibliotekanauki.pl/articles/2086424.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
reverse osmosis
Iraq
Basrah
Shatt Al-Arab
TDS
total dissolved solids
Winflows
Opis:
The Basrah province (southern of Iraq) was interested in establishing desalination plants to provide drinking water due to the high levels of salinity in its water resources. This work was carried out in order to evaluate and simulate the functionality of the reverse osmosis plant in the Al-Maqal port. From the field and laboratory measurement, this study concluded that the considered parameters of product water by reverse osmosis (RO) plant were within the Iraqi standard (IRS) limits. The calculation of operation indices showed that the recovery rate of plant (72%) and the permeate flux of plant (20 lmh) was within for limitation of brackish surface water. In turn, the plant has a low salt rejection (90.1%) and a high pressure drop (5 bar); therefore, the membranes require backwashing or chemical cleaning. Then, the performance of RO membrane was simulated by the Winflows software. The best operating parameters were identified. The coefficient of determination (R2) between simulated and measured TDS was 0.83. Therefore, the simulated TDS of permeate multiplied by 5.3 was given a good estimation for actual TDS within acceptable an error rate of 17%.
Źródło:
Journal of Ecological Engineering; 2022, 23, 5; 173--186
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł

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