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Wyświetlanie 1-61 z 61
Tytuł:
Discourse-Pragmatic and Processing-Related Motivators of the ordering of Reason Clauses in an Academic Corpus
Autorzy:
Rezaee, Abbas A
Nemati, Majid
Golparvar, Seyyed Ehsan
Powiązania:
https://bibliotekanauki.pl/articles/620538.pdf
Data publikacji:
2018-11-16
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
positioning
reason clauses
subordinator
bridging
vomplexity
Opis:
The present research is aimed at examining the relative importance of the competing motivators of the sequencing of reason clauses in a corpus of research articles of applied linguistics. All the finite reason clauses accompanied by their main clauses in this corpus were collected. Random forest of conditional inference trees is the statistical modelling in this study. The findings showed that sentence-final reason clauses outnumber sentenceinitial ones. Moreover, subordinator choice and bridging, which are discourse-pragmatic constraints on clause positioning, emerged as the two more powerful predictors of the ordering of reason clauses in this corpus. Furthermore, the complexity of the clause turned out to be a stronger processing-related predictor than the length of the clause.
Źródło:
Research in Language; 2018, 16, 3
1731-7533
Pojawia się w:
Research in Language
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the pre-injection system of a marine diesel engine through multiple-criteria decision-making and artificial neural networks
Autorzy:
Rodriguez, C. G.
Lamas, M. I.
Rodriguez, J. D.
Abbas, A.
Powiązania:
https://bibliotekanauki.pl/articles/2033205.pdf
Data publikacji:
2021
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
marine engine
emissions
consumption
artificial neural networks
multi-criteria decision making
computational fluid dynamics
Opis:
The present work proposes several pre-injection patterns to reduce nitrogen oxides in the Wartsila 6L 46 marine engine. A numerical model was carried out to characterise the emissions and consumption of the engine. Several pre-injection quantities, durations, and starting instants were analysed. It was found that oxides of nitrogen can be noticeably reduced but at the expense of increasing consumption as well as other emissions such as carbon monoxide and hydrocarbons. According to this, a multiple-criteria decision-making (MCDM) model was established to select the most appropriate parameters. Besides, an artificial neural network (ANN) was developed to complement the results and analyse a huge quantity of alternatives. This hybrid MCDM-ANN methodology proposed in the present work constitutes a useful tool to design new marine engines.
Źródło:
Polish Maritime Research; 2021, 4; 88-96
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cooperative driving at isolated intersections based on the optimal minimization of the maximum exit time
Autorzy:
Wu, J.
Abbas-Turki, A.
Perronnet, F.
Powiązania:
https://bibliotekanauki.pl/articles/331216.pdf
Data publikacji:
2013
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
cooperative driving
wireless communication
autonomous intersection management
dynamic programming
komunikacja bezprzewodowa
zarządzanie autonomiczne
programowanie dynamiczne
Opis:
Traditional traffic control systems based on traffic light have achieved a great success in reducing the average delay of vehicles or in improving the traffic capacity. The main idea of these systems is based on the optimization of the cycle time, the phase sequence, and the phase duration. The right-of-ways are assigned to vehicles of one or several movements for a specific time. With the emergence of cooperative driving, an innovative traffic control concept, Autonomous Intersection Management (AIM), has emerged. In the framework of AIM, the right-of-way is customized on the measurement of the vehicle state and the traffic control turns to determine the passing sequence of vehicles. Since each vehicle is considered individually, AIM faces a combinatorial optimization problem. This paper proposes a dynamic programming algorithm to find its optimal solution in polynomial time. Experimental results obtained by simulation show that the proper arrangement of the vehicle passing sequence can greatly improve traffic efficiency at intersections.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2013, 23, 4; 773-785
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparison of the effect of zinc oxide nanoparticles and extract of Acorus calamus applied topically on surgical wounds inflicted on the skin of rabbits
Autorzy:
Abbas, A.
Muhammad, S.A.
Ashar, A.
Mehfooz, S.A.
Rauf, A.
Bakhsh, M.
Nadeem, T.
Fu, H.
Powiązania:
https://bibliotekanauki.pl/articles/16648000.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
antibiotic resistance
nanoparticle
plant extract
wound
Opis:
Antibiotics are used for postsurgical wound healing purposes but unfortunately, resistance against them demands some alternatives for quick recovery. Sepsis of wounds is a challenge for medical as well as veterinary professionals. Nanoparticles have significant advantages in wound treatment and drug resistance reversal. This study was conducted to appreciate emerging alternates of antibiotics like zinc oxide nanoparticles and plant extracts in topical application. Zinc oxide is considered a good wound healer and its nanoparticles are easy to access. So, the efficacies of zinc oxide nanoparticles and sweet flag plant extract ointments were tested to compare modern and traditional therapeutics as sweet flag is considered a pure medicinal plant. Rabbits were selected for this study due to the healing properties of their skin. Wounds were inflicted on the thoracolumbar region and treated for 29 days post-surgically daily with normal saline and the ointment of zinc oxide nanoparticles and sweet flag extract ointment, prepared in a hydrophilic solvent. Wound shrinkage was observed daily and histopathological analysis was made and results were compared. Zinc oxide nanoparticles ointment showed the most satisfactory results for every parameter included in the study. No side effects of its topical application were observed. Healing was normal without any complications. The preparations of zinc oxide nanoparticles may help in the era of antibiotic resistance as topical drugs in the future.
Źródło:
Polish Journal of Veterinary Sciences; 2023, 26, 2; 285-293
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CYTOTOXIC ACTIVITY OF VARTHEMIA IPHIONOIDES ESSENTIAL OIL AGAINST VARIOUS HUMAN CANCER CELL LINES
Autorzy:
Abbas, Manal M.
Abbas, Manal A.
Kandil, Yasser I.
Powiązania:
https://bibliotekanauki.pl/articles/895451.pdf
Data publikacji:
2019-08-30
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
apoptosis
cytotoxicity
anticancer
varthemia iphionoides
Opis:
Varthemia iphionoides is a perennial plant that belongs to Asteraceae family. This study investigates the cytotoxic effect of V. iphionoides essential oil on breast (MCF7), prostate (PC3), and chronic myelogenous leukemia (K562) and normal human fibroblast cell lines using MTT assay and flow cytometric analysis. In addition, GC-MS of the oil was carried out. The IC50 values for PC3, MCF7, K562 and fibroblast were 145.3, 188.8, 87.88 and 173.3 µg/ml, respectively. V. iphionoides essential oil was most effective against K562. Flow cytometric results for IC50 dose of V. iphionoides oil on K562 cells showed 32.2 % apoptosis in 24 h. GC-MS analysis resulted in the identification of 25 compounds. 1,8-Cineole, borneol, and α-cadinol were the major constituents of V. iphionoides volatile oil. In conclusion, this study reveals for the first time the cytotoxic activity of V. iphionoides essential oil on K562 cell line which may occur through apoptosis induction.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2019, 76, 4; 701-706
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
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
Tytuł:
Modeling Pollution Index Using Artificial Neural Network and Multiple Linear Regression Coupled with Genetic Algorithm
Autorzy:
Abdulkareem, Iman Ali
Abbas, Abdulhussain A.
Dawood, Ammar Salman
Powiązania:
https://bibliotekanauki.pl/articles/2068477.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
Shatt Al-Arab river
comprehensive pollution index
multiple linear regression
artificial neural network
genetic algorithm
Opis:
Shatt Al-Arab River in Basrah province, Iraq, was assessed by applying comprehensive pollution index (CPI) at fifteen sampling locations from 2011 to 2020, taking into consideration twelve physicochemical parameters which included pH, Tur., TDS, EC, TH, Na+, K+, Ca+2, Mg+2, Alk., SO4-2, and Cl-. The effectiveness of multiple linear regression (MLR) and artificial neural network (ANN) for predicting comprehensive pollution index was examined in this research. In order to determine the ideal values of the predictor parameters that lead to the lowest CPI value, the genetic algorithm coupled with multiple linear regression (GA-MLR) was used. A multi-layer feed-forward neural network with backpropagation algorithm was used in this study. The optimal ANN structure utilized in this research consisted of three layers: the input layer, one hidden layer, and one output layer. The predicted equation of the comprehensive pollution index was created using the regression technique and used as an objective function of the genetic algorithm. The minimum predicted comprehensive pollution index value recommended by the GA-MLR approach was 0.3777.
Źródło:
Journal of Ecological Engineering; 2022, 23, 3; 236--250
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A communicative approach in development of tourism; investigating the effects of the degree of sense of security in the development of tourism in the city of Bandar Abbas
Autorzy:
Paknahad, Mohamad Reza
Abdolrahmani, Reza
Powiązania:
https://bibliotekanauki.pl/articles/1192698.pdf
Data publikacji:
2016
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Sense of security
Social security
Development
Coastal regions
Tourism
Opis:
Security as one of the human's critical needs assumes importance. Security lays the ground for development in various economic, social and cultural dimensions; for this, it is of high significance to measure it. The goal of the current research was to assess sense of security and its role in the expansion of tourism with emphasis on communicative planning components in coastal cities. The research methodology used in this paper was a case study and the information gathering method was document based and it fell in survey types. In document based method, domestic and foreign credible books and researches were applied and in the survey type method, too the tool of questionnaire has been used for gathering information. The statistical population in this research consisted of all tourists who had travelled to the city of Bandar Abbas with some economic, social, political, scientific, and cultural and entertainment aims. The number of 384 tourists was selected as the sample. While analyzing data, T test statistical tests were used for examining the research hypotheses. The result arising from the examination of the research's questions and hypotheses revealed that current tourists in the city of Bandar Abbas enjoy a favorable level as to the sense of security and in comparison between female and male tourists; the latter enjoys higher average of sense of security. Of among the eight hypotheses raised in the research, sense of security of tourists is not only significantly related with age and educational degree while it has a significant relationship with other variables including, the presence of tourists in the city, later travels to the city, choosing of the place of tourism, sense of satisfaction with the travel, gender and income. This is indicative of the fact that the more sense of security increases among tourists, and the more this issue circulates among them, the more tourists' presence and their tendency to reside in the city and even their later travels to the city of Bandar Abbas will increase, because security is found to be the most fundamental factor for tourism development in each city and region that aims to conforms with the features of superior regions within the tourism industry. Development of the tourism industry in each city, though is a product of appropriate security conditions, this means stability of security of that particular in that region.
Źródło:
World Scientific News; 2016, 46; 260-275
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis of CdSe nanostrucature using thermal evaporation method toward Light-emitting-diode
Autorzy:
Muttalib, Alrabab A. Abdul
Dakhil, Osama A.
Abbas, Khaldoon N.
Powiązania:
https://bibliotekanauki.pl/articles/1046545.pdf
Data publikacji:
2019
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
CdSe nanoparticles
Light-emitting-diode (LED)
Thermal evaporation
Opis:
Efficient Light-emitting-diode (LED) constructed of CdSe/Si CdSe nano particles were synthesized through thermal evaporation method using tube furnace and Ar as carrier gas. The synthesized nanoparticles were subjected to structural, optical, morphological, and electrical investigation. The nanoparticles structural properties studied by X-Ray diffraction, confirm the formation of hexagonal structure of CdSe (NPs). The preferred growth direction toward (100) orientation. Crystallite size was calculated by Scherrer’s equation. The surface morphology formation studied by Scanning Electron Microscopy (SEM) and average grain size also has been calculated. FESEM images revel sheets and tetra pods constructed of nano particles with average size 15-40 nm. Ultraviolet-visible (UV-Vis) absorption spectrum showed the absorption peak of CdSe at 350 nm. PL measurements show the emission peaks at 641 and 678 nm. The results of (I-V) measurements show the large ratio between the darkness and light state, which shows the correct behavior of LEDs. The ideality factor was estimated at the optimum conditions and it has been found (1.18).
Źródło:
World Scientific News; 2019, 138, 2; 248-259
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improvement of copper sulfide flotation using a new collector in an optimized addition scheme
Autorzy:
Bazmandeh, Mehdi
Sam, Abbas
Powiązania:
https://bibliotekanauki.pl/articles/2146863.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
flotation
copper sulfide
reagents addition scheme
DMDT
Opis:
Selection of appropriate types of collectors as the main basis of flotation can have a significant impact on the process efficiency. In this regard, 2, 5-Dimercapto-1, 3, 4-thiadiazole (DMDT) was introduced as a new collector. And, its performance was compared with the prevalent collector C7240 (a mixture of 10–20 wt% sodium alkyl dithiophosphate and 20–30 wt% sodium mercaptobenzothiozole) and Sodium Isobutyl Xanthate (SIBX) on the flotation of copper sulfide ores. The effect of the reagent dosage (collector and frother) and pH level were studied using a design of experiment (DOE). Results showed effect of factors was significant in the case of copper recovery and grade of product. Consequently, the optimum range of the DMDT was 8 g/t at pH=11.8 in which the maximum grade and recovery were obtained. Also, the application of chemical agents also had a significant effect on flotation performance, so that the result of sequential addition of the collector indicated significantly improved recovery and grade. The use of a combination of collectors resulting in both physisorbed and chemisorbed surface products can also affect the froth structure and influence the final grade achieved. Accordingly, the best route of collector addition was DMDT at first, then C7240, and finally SIBX. Through this offer, the maximum recovery and grade of product were achieved 86.2% and 14.1% respectively. So, DMDT as a mixture of two others has a positive effect on the copper flotation efficiency.
Źródło:
Physicochemical Problems of Mineral Processing; 2021, 57, 6; 71--79
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Chinese Students’ Perception on Plagiarism: a Case of Anhui, China
Autorzy:
Fatima, Anam
Abbas, Asad
Ming, Wan
Powiązania:
https://bibliotekanauki.pl/articles/1969343.pdf
Data publikacji:
2018-09-30
Wydawca:
Wydawnictwo Adam Marszałek
Tematy:
academic dishonesty
China
plagiarism
public sector universities
student perception
Opis:
Anhui is one of the leading knowledge-based regions of China, which relies on academic research innovation. This publication aims to present the factors that influence of plagiarism on Chinese students and also explores the common perceptions of students themselves on the idea and act of plagiarism in higher level education environments. The literature provided identifies two major facets of plagiarism, which are both internal and external factors. Qualitative evidence from students demonstrates that both internal and external factors encourage Chinese students to plagiarize during their studies due to the availability of the internet (ICT and Web), lack of teaching expertise, poor academic skills, pressure from family members and peer groups, and financial constraints. It was also found that personal pride played a significant role in catalyzing the decision to plagiarize. On the basis of the said literature and qualitative evidence, the authors provide relevant recommendations about overcoming the concerns of students regarding plagiarism at the university level.
Źródło:
The New Educational Review; 2018, 53; 95-101
1732-6729
Pojawia się w:
The New Educational Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A computational model for multi-criteria decision making in traffic JAM problem
Autorzy:
Naeem, Ali
Abbas, Jabbar
Powiązania:
https://bibliotekanauki.pl/articles/2141883.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
multi-criteria decision making
fuzzy measure
choquet integral
traffic jam
Opis:
In this paper, we apply a computational model for multicriteria decision making in traffic jam problems. First, we propose a system to determine the optimal shortcut road by reading the number of cars in each street using Radio Frequency Identification (RFID). Then, we have processed the data of traffic jam problems using Choquet integral with writing algorithm and computer program as a working procedure.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2021, 15, 2; 39-43
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adnan Abbas, Poetry of the Arab East after 1945, Zakład Graficzny UAM, Poznań 2015, ss. 512
Аднан Аббас, Поэзия арабского Востока после 1945 года
Autorzy:
Jamsheer, Hassan A.
Powiązania:
https://bibliotekanauki.pl/articles/2173939.pdf
Data publikacji:
2016-12-31
Wydawca:
Wydawnictwo Adam Marszałek
Źródło:
Studia Orientalne; 2016, 2(10); 185-187
2299-1999
Pojawia się w:
Studia Orientalne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Agro-morphological characterization of Brassica rapa L. germplasm from Azad Jammu and Kashmir
Autorzy:
Ashraf, M.
Abbas, S.R.
Begum, S.
Gardezi, S.D.A.
Khan, R.T.
Powiązania:
https://bibliotekanauki.pl/articles/12700475.pdf
Data publikacji:
2020
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Opis:
Brassica rapa is an important crop of Azad Jammu and Kashmir which is a major source of vegetable and oil. The study was carried out to evaluate the genetic diversity among Brassica rapa germplasm grown in Azad Jammu and Kashmir based on their morphological characters and yield. The present study was carried out in the field of National Institute of Genomics and Advanced Biotechnology (NIGAB), NARC Islamabad from October 2017 to March 2018. The study showed great diversity among the germplasm for days to germination, primary branches, secondary branches, maturity, plant height, number of silique, seeds per silique, yield per plant and 1000 seed weight. The genotypes 026509, 026514 and 026548 showed maximum yield and other better morphological responses, so these genotypes should be used in future to enhance the production of this crop.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2020, 19, 4; 31-39
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Study of Generalized Thermoelastic Interaction in an Infinite Fibre-Reinforced Anisotropic Plate Containing a Circular Hole
Autorzy:
Abbas, Ibrahim
Abd-alla, Abo-el-nour
Powiązania:
https://bibliotekanauki.pl/articles/1505045.pdf
Data publikacji:
2011-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
46.25.Hf
81.05.Ni
02.70.Dh
Opis:
In the context of Lord and Shulman theory, the generalized thermoelastic theory with thermal relaxation is used to investigate the thermoelastic interaction in an infinite fibre-reinforced anisotropic plate containing a circular hole. Thermoelastic interactions are caused by a uniform step at temperature applied to the boundary of the hole which is stress-free. The problem is solved numerically using a finite element method and the numerical solutions of the non-dimensional governing partial differential equations of the problem are shown graphically. The effects of the presence and absence reinforcement on temperature, stress and displacement are studied.
Źródło:
Acta Physica Polonica A; 2011, 119, 6; 814-818
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Challenge of Terminographic Gaps in Translation: A Text-based Approach Put to Practice
Autorzy:
Mehrpooya, Abbas
Moinzadeh, Ahmad
Dabaghi, Azizollah
Powiązania:
https://bibliotekanauki.pl/articles/620653.pdf
Data publikacji:
2019-01-22
Wydawca:
Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego
Tematy:
Specialized discourse
Technical term
Terminological gap
Terminography
Translation
Opis:
The issue of terminographic gaps in specialized discourses has always concerned the researchers and readers alike. However, due to the interlingual nature of such a technical issue, the need for interdisciplinary collaboration between translation and terminography seems to be in prospect. For such a reciprocation scheme to come into practical effect, the present study has aimed to conduct a translational-terminographic concerto by putting a specialized English text to the test of Persian translation. This has been done to answer the question if a translator is required to provide for any terminological gap once all attempts at finding the corresponding terminological items have failed. In this pursuit, certain workable criteria for terminographic proposition via translation have been discussed. As such, the practical phase of this study concerns itself with addressing the issue of Persian terminological gaps in a language-related metadiscoursal field and consequently detecting the problem zones of non-equivalence in a specialised text carefully selected for translation. Ultimately, a list of Persian terminological items constructed on the basis of the proposed translational-cum-terminographical scheme is compiled to address the identified terminological gaps in the target metadiscourse under study.
Źródło:
Research in Language; 2018, 16, 2
1731-7533
Pojawia się w:
Research in Language
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modification of Photocatalytic Activity of Zinc Oxide Photocatalyst by Sensitization with Riboflavin as a Photosensitizer
Autorzy:
Adrees, Hussein
Nema, Noor A.
Jassim, Abbas
Abdali, O. Karar
Kahdum, Salih
Mousa, Abdulazeez O.
Powiązania:
https://bibliotekanauki.pl/articles/1193912.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
ZnO
industrial wastewater
photosensitizer
riboflavin
sensitization
Opis:
This project involves modification of the photoresponse of zinc oxide by sensitization with riboflavin (RF) as a photosensitizer. Sensitization of the surface of zinc oxide with RF was performed using impregnation method. Modification of zinc oxide surface with this photosensitizer was investigated using different techniques such as XRD, FTIR, SEM and UV-Visible spectroscopy. The photocatalytic activity of both neat and sensitized zinc oxide was investigated by removal of methylene blue dye (MB) from the simulated industrial wastewater. Removal of this dye from the aqueous solutions was conducted by measuring the absorbance of this dye at 665 nm.
Źródło:
World Scientific News; 2015, 22; 29-39
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling and assessment of a single pile subjected to lateral load
Autorzy:
Abbas, J. M.
Chik, Z.
Taha, M. R.
Powiązania:
https://bibliotekanauki.pl/articles/178422.pdf
Data publikacji:
2018
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
piles
lateral response
slenderness ratio
flexural rigidity
3D FE analysis
Opis:
A three-dimensional finite element technique was used to analyse single pile lateral response subjected to pure lateral load. The main objective of this study is to assess the influence of the pile slenderness ratio on the lateral behaviour of single pile. The lateral single pile response in this assessment considered both lateral pile displacement and lateral soil resistance. As a result, modified p-y curves for lateral single pile response were improved when taking into account the influence lateral load magnitudes, pile cross sectional shape and flexural rigidity of the pile. The finite element method includes linear elastic, Mohr-Coulomb and 16-nodes interface models to represent the pile behaviour, soil performance and interface element, respectively. It can be concluded that the lateral pile deformation and lateral soil resistance because of the lateral load are always influenced by lateral load intensity and soil type as well as a pile slenderness ratio (L/D). The pile under an intermediate and large amount of loading (in case of cohesionless soil) has more resistance (low lateral displacement) than the pile embedded on the cohesion soil. In addition, it can be observed that the square-shaped pile is able to resist the load by about 30% more than the circular pile. On the other hand, pile in cohesionless soil was less affected by the change in EI compared with that in cohesive soil.
Źródło:
Studia Geotechnica et Mechanica; 2018, 40, 1; 65-78
0137-6365
2083-831X
Pojawia się w:
Studia Geotechnica et Mechanica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Child sexual abuse based on the crosswise model: a cross-sectional study on 18–24-year-old Iranian students
Autorzy:
Vakilian, Katayon
Abbas Mousavi, Syyed
Keramat, Afsaneh
Powiązania:
https://bibliotekanauki.pl/articles/552723.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Przyjaciół Medycyny Rodzinnej i Lekarzy Rodzinnych
Tematy:
child abuse
students
cross-sectional studies.
Opis:
Background. Child sexual abuse refers to the compulsory sexual stimulation of a child or adolescent by an adult or older adolescent and includes a wide range of behavior, such as exhibitionism, fondling, sexual intercourse and using children for pornography. Objectives. The present study used the crosswise model to investigate childhood sexual abuse among Iranian university students. Material and methods. This cross-sectional study used a multi-stage method to examine 1,500 subjects in the universities of Shahroud, Iran. The questionnaire consisted of a pair of questions evaluating sexual abuse based on the crosswise approach, one sensitive and the other non-sensitive. To ensure the confidentiality of information, the questionnaire was distributed anonymously among the 1,500 students of 6 universities, and the students’ field of study was not mentioned. The collected data was analyzed with descriptive tests (mean and percent) and inferential tests, (independent t-test, chi-squared and crosswise) using SPSS 18 and STATA software. Results. A total of 11% of the girls and 27% of the boys were found to have suffered a form of sexual abuse. Conclusions. The results indicate a high prevalence of sexual abuse among Iranian children. Evaluating sexual abuse helps health policymakers to focus on parent training through health programs and educational programs in schools
Źródło:
Family Medicine & Primary Care Review; 2019, 3; 249-252
1734-3402
Pojawia się w:
Family Medicine & Primary Care Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cyclic observations of geometric structure of a building construction in hazardous conditions and construction works carried out in its immediate vicinity
Autorzy:
Abbas, S.
Pawłowski, W.
Powiązania:
https://bibliotekanauki.pl/articles/225497.pdf
Data publikacji:
2011
Wydawca:
Politechnika Warszawska. Wydział Geodezji i Kartografii
Tematy:
pomiary geodezyjne
Prawo budowlane
measurements
Construction law
Opis:
A measuring work carried out in engineering surveying for construction industry purposes apply to building facilities within the meaning of the Act, "Construction Law", in the following situations: a) at the construction stage - as-built and post-completion surveying; b) during their use - mainly for specialized expertise performed under a periodic assessment of technical status of the object or when symptoms such cracks, scratches, excessive deflection or buckling of structural elements which pose a threat to its safe use; c) surveying of objects in whose vicinity works are carried out towards thier development, which may pose a threat to the stability of thier geometrical structure, particularly concerning objects situated on weak and / or heterogeneous soil.
Źródło:
Reports on Geodesy; 2011, z. 1/90; 9-16
0867-3179
Pojawia się w:
Reports on Geodesy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fretting wear analysis of different tube materials used in heat exchanger tube bundle
Autorzy:
Abbas, T.
Khushnood, S.
Nizam, L. A.
Usman, M.
Powiązania:
https://bibliotekanauki.pl/articles/957958.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
fretting wear
flow-induced vibration
flexible tube
cross flow velocity
Opis:
Research on heat exchange has been carried out for more than five decades because of its importance in process industries and power generation plants. Heat exchanger experiencing cross flow are vulnerable to flow-induced vibration. This vibration causes the interaction of tubes with the baffle resulting in a fretting wear of the tubes. The present study focuses on fretting wear analysis of different tube materials. Fretting wear tests were performed on aluminum, copper and stainless steel instrumented central tubes against mild steel baffle. For each tube material the tests were performed for three different test durations i.e. 60 minutes, 120 minutes and 180 minutes at a cross flow velocity of 0.55 m/s. It was observed that vibrational amplitude of the flexible test tube is affected by its weight. A scanning electron microscope was used to analyze and measure the sizes of wear scar. The results indicated that wear loss in case of aluminum tube is the highest while that in case of stainless steel tube is the lowest.
Źródło:
Advances in Science and Technology. Research Journal; 2017, 11, 4; 123-133
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Orange Peels as a Sustainable Material for Treating Water Polluted with Antimony
Autorzy:
Hasan, Manar B.
Al-Tameemi, Israa M.
Abbas, Mohammed N.
Powiązania:
https://bibliotekanauki.pl/articles/1839075.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
antimony treatment
antimony adsorption
polluted water
orange peel
low-cost material
Opis:
Water pollution has increased due to human activities; consequently, it is essential to treat both surface water and ground water so they are suitable to meet the needs of the population. This study will discuss water treatment intended to remove antimony. Antimony (Sb) is classed as a high-priority toxic pollutant because of its adverse effects on ecosystems and human health. There are several methods for removing antimony from water, including adsorption, coagulation, ion exchange, and electrochemical treatment. This study focuses on the adsorption method as researchers have, in recent times, been seeking adsorbents that are environmentally friendly and cost-effective and that do not leave a residue. The study investigates the use of orange peels treated with acetic acid as an adsorbent to remove antimony ions from a simulated aqueous solution. The results revealed that 5 g of treated orange peels is 98.5% effective at treating water at a pH of 6, for a contact time of 150 minutes, at a mixing speed of 450 rpm.
Źródło:
Journal of Ecological Engineering; 2021, 22, 2; 25-35
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modulation of Doxorubicin Cytotoxicity by Isoliquiritin and Cynarin Combination on Different Cancer Cell Lines
Autorzy:
Al-AdamI, Salat G.
Al-Khateeb, EKBAL H.
NUMAN, NAWFAL A.
ABBAS, Mannal M.
Tawfiq, FATIMA A.
Shakya, Ashok K.
Powiązania:
https://bibliotekanauki.pl/articles/895633.pdf
Data publikacji:
2020-06-29
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
cytotoxicity
doxorubicin
cancer cells
Modulation
Cynarin
Isoliquiritin
Opis:
Natural polyphenolic compounds produced by plant exhibit many pharmacological effects including antioxidant, chemopreventive as well as anticancer properties. This study was conducted to investigate the effect of cynarin ( from Artichoke, Cynara scolymus) and isoliquiritin (from Licorice, Glycyrrhiza uralensis) on doxorubicin (positive control) cytotoxicity in different cell lines including normal (Fibroblasts MCR-5 and Myoblasts H9c2) and cancer (colorectal HCT-116 and hepatocellular HEP-G2) cell lines. The cytotoxic effect of doxorubicin, isoliquiritin and cynarin alone or in different combination was studied on cancer cell lines as well as normal cell lines. The results obtained indicated that both cynarin and isoliquiritin enhance the cytotoxicity of doxorubicin. Both cynarin and isoliquiritin also reduce the cardiotoxicity of doxorubicin on normal cardiac cell lines. The combination of the three compounds (cynarin, isoliquiritin and doxorubicin) result in decrease the cytotoxicity of doxorubicin, which may indicate the presence of interaction and/or antagonism effect between cynarin and isoliquiritin. Cynarin was found to enhance the growth of (HCT-116 and HEP-G2) this might suggest avoiding use of Artichoke in subjects’ susceptibility for these cancers. All results were evaluated using statistical path and showed significant findings. The mechanism of enhanced doxorubicin’s cytotoxicity by cynarin or isoliquiritin also require further investigation to explain the increasing and/or the decreasing effect of these polyphenolic compounds on cytotoxicity of doxorubicin. The current finding can help to start with safe minimum dose of two or three combination of compounds in the context of clinical trials and practice.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2020, 77, 3; 475-484
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Power System Transient Stability Case Study: A Power Sub-Station Plant in Sudan
Autorzy:
Abbas, Asma
Kamal, Ramadan Doud
Elmustafa, Sayed Ali Ahmed
Powiązania:
https://bibliotekanauki.pl/articles/1193487.pdf
Data publikacji:
2021
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Dynamic Stability
GARRI power stations
Swing Equation
Transient Stability
power angle
synchronism
Opis:
Power system stability is defined by the tendency of the energy system to develop recovery forces equal or greater than the disturbing forces to maintain a stable equilibrium state. In general, power system stability problems are usually divided into two parts, steady state and transient state. An extension of steady-state stability is dynamic stability. Transient stability deals with the effects of large disturbances such as malfunctions, sudden line interruptions, and sudden application or load removal. This research is presents load angle method to transient stability problem for multi-machine system. The ETAP program is used to simulate the above method to study transient stability. A sub-station plant in Khartoum (GARRI) with four generation sections (1, 2 and 4) has been taken as a case study. The simulation result shows that when a single line-ground fault occurs at main busbar and cleared at time t = 0.4 sec the system is stable, in case 2, when the same fault cleared at t = 3 sec the system become unstable.
Źródło:
World Scientific News; 2021, 158; 267-284
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of crises situations on the development of business continuity management during the COVID-19 pandemic in Jordanian hospitals
Wpływ sytuacji kryzysowych na rozwój zarządzania ciągłością działania w czasie pandemii COVID-19 w szpitalach Jordanii
Autorzy:
AL-Khrabsheh, Abdullah Abbas
Murad, Maisoon Abo
AL-Bazaiah, Sakher A. I.
Alrabab'a, Mahmoud H.
AL-Nsour, Marwan Muhammad
AL-Khrabsheh, Abdelruhman Abbas
Powiązania:
https://bibliotekanauki.pl/articles/2069797.pdf
Data publikacji:
2022
Wydawca:
Fundacja Ekonomistów Środowiska i Zasobów Naturalnych
Tematy:
crisis
Jordanian hospital
business continuity management
probability of crisis recurrence
kryzys
szpital jordański
zarządzanie ciągłością działania
prawdopodobieństwo nawrotu kryzysu
Opis:
In this paper, the researchers have investigated the effect of various crises on the development of the Business Continuity Management (BCM) process in Jordanian hospitals. They used the quantitative research design technique to fulfil all the study’s objectives. After that, they also tested whether their hypothesised model could be used for developing the BCM. After distributing question-naires amongst the supervisors working in 7 private hospitals in Amman, Jordan, they collected all the data. Then, they carried analysed and sorted all the data using the SPSS software. The study results showed that the hospitals in Jordan were eager to maintain security and stability in the case of a crisis. Additional statistical tests presented evidence regarding the positive effect of different factors (such as external/ internal crises, natural disasters, operational and strategic risks, and the probability of recurrence of a crisis) on the BCM development in Jordanian hospitals. Here, the researchers have attempted to offer insights and knowledge to help practitioners, academicians and policymakers.
W niniejszym artykule zbadano wpływ różnych sytuacji kryzysowych na rozwój procesu zarządzania ciągłością działania (ang. Business Continuity Management, BCM) w jordańskich szpitalach. Wykorzystano technikę projektowania badań ilościowych. Przetestowano również, czy hipotetyczny model można wykorzystać do opracowania BCM. Dane, uzyskane w wyniku badania ankietowego przełożonych pracujących w 7 prywatnych szpitalach w Ammanie w Jordanii, zostały przeanalizowane za pomocą oprogramowania SPSS. Wyniki badania wykazały, że szpitale w Jordanii dbały o zachowanie bezpieczeństwa i stabilności na wypadek kryzysu. Dodatkowe testy statystyczne dostarczyły dowodów na pozytywny wpływ różnych czynników (takich jak kryzysy zewnętrzne/wewnętrzne, klęski żywiołowe, ryzyka operacyjne i strategiczne, prawdopodobieństwo ponownego wystąpienia kryzysu) na rozwój BCM w jordańskich szpitalach. Autorzy próbowali przedstawić spostrzeżenia i wiedzę, które mogą być pomocne praktykom, naukowcom i decydentom.
Źródło:
Ekonomia i Środowisko; 2022, 1; 84--108
0867-8898
Pojawia się w:
Ekonomia i Środowisko
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nawidzenie. O kino-myśleniu poza metafizyką na przykładzie filmu Abbasa Kiarostamiego „Smak czereśni” (przypis do Jeana-Luca Nancy’ego)
An Evidence: On Cine-Thinking Outside of Metaphysics Using the Example of Abbas Kiarostami’s “Taste of Cherry” (A Footnote to Jean-Luc Nancy)
Autorzy:
Bohdziewicz, Janusz
Powiązania:
https://bibliotekanauki.pl/articles/31341619.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Sztuki PAN
Tematy:
Abbas Kiarostami
Martin Heidegger
Jean-Luc Nancy
Opis:
Celem tekstu jest refleksja nad możliwością myśli filmowej poza uwarunkowaniami metafizyki. Esej rozważa tę kwestię na marginesie filmu Abbasa Kiarostamiego Smak czereśni, w nawiązaniu do myśli Martina Heideggera i Jeana-Luca Nancy’ego. Autor krótko interpretuje film, wskazując jego główny problem oraz sposób jego rozwiązania przez reżysera – zastosowanie niekonwencjonalnych środków artystycznych w relacji do przekazywanych treści zmusza widza do wyjścia z nawykowego rozumienia filmu, ale i z myśli o rzeczywistości. To wyjście można opisać filozoficznie – film pozwala doświadczyć nieoczywistej oczywistości i zwrócić uwagę na jej prymarną zależność od samej możliwości bycia: prześwitu. W nim wszelkie obrazy winny być traktowane jako na-widzenia, napływające ku człowiekowi z samego światła i wyzwalające ku współtworzeniu świata. Dzieło Kiarostamiego jest przykładem spotkania otwartego artysty z dynamiczną ewidencją bycia, zrealizowanego na błonie filmowej niczym acheiropoietyczne ikony.
The aim of the article is a reflection on the possibility of taking cinema thought beyond the considerations of metaphysics. The essay is considering this issue in relation to Abbas Kiarostami’s film Taste of Cherry, with reference to the thoughts of Martin Heidegger and Jean-Luc Nancy. The author briefly interprets the film, identifies its main problem and the solution proposed by the director - using unconventional artistic methods in relation to the transmitted meanings forces the viewer to go beyond the habitual understanding of film as well as reality. This can be described in terms of philosophy - film permits one to experience the unobvious obviousness and forces one to note its primary dependence on the very possibility of being: a clearing. In it, all images should be treated as an evidence, coming to the people from light itself and liberating them to co-create the world. Kiarostami’s work is an example of an open artist’s meeting with a dynamic evidence of being, recorded on film like acheiropoieta.
Źródło:
Kwartalnik Filmowy; 2016, 96; 216-225
0452-9502
2719-2725
Pojawia się w:
Kwartalnik Filmowy
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of Dynamic Dichroism Properties of Disperse Orange 11 Molecules and Azo-Molecules Doped in Poly(Methyl Methacrylate) Thin Films: A Comparison
Autorzy:
Abbas, B.
Alshikh Khalil, M.
Powiązania:
https://bibliotekanauki.pl/articles/1537688.pdf
Data publikacji:
2010-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
33.55.+b
78.20.e
78.66.Qn
Opis:
We investigate the dichroism characteristics of poly (methyl methacrylate) PMMA thin films doped with DO11, DO3, DSR13 and DSR1 dye molecules, which change under illumination with visible light. Our data show that photoisomerisation, phototautomerization reactions and light-induced polar orientation are dependent on the molecular structure of the polymer. Polar structure and molecular size, as well as the chemical structure of PMMA host, are the dominant parameters that determine both the extent and speed of dichroism buildup and relaxation processes. Two forms of DO11 molecules (keto and enol forms), and two other forms of azo-based dyes ( trans and cis forms) are responsible for the interaction with irradiating laser light and forming an anisotropic structure inside the PMMA/dye thin films.
Źródło:
Acta Physica Polonica A; 2010, 117, 6; 904-910
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Microstructure Development of Spark Plasma Sintered Ti-Nb Alloy by Heat Treatment
Autorzy:
Haq, M. A.
Abbas, S. F.
Eom, N. S. A.
Kim, T. S.
Lee, B.
Park, K.-T.
Kim, B. S.
Powiązania:
https://bibliotekanauki.pl/articles/355593.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
TiNb alloy
Spark plasma sintering
Heat treatment
Microstructure
β-phase titanium
Opis:
The β-phase Titanium (β-Ti) alloys have been under the spotlight in the recent past for their use as biomedical prosthetic materials owing to their excellent properties such as low elastic modulus, high corrosion resistance and tensile strength. Recently, Niobium (Nb) has gained a lot of attention as a β-phase stabilizing element in Ti alloys to replace Vanadium (V) due to its excellent solubility in Ti, low elastic modulus and biocompatibility. In this work, low cost Ti-20Nb binary alloy has been fabricated via powder metallurgy procedures. The blended powder mixtures of Ti and Nb were sintered at 900°C for 20 mins by the Spark Plasma Sintering (SPS) with an applied uniaxial pressure of 40 MPa. The heating rate was fixed at 50°C/min. The sintered alloy was subject to heat treatments at 1200°C in vacuum condition for various time durations. The characterizations of microstructure obtained during this process were done using FE-SEM, EDS and XRD. By increasing heat treatment time, as understood, the volume of residual Nb particles was decreased resulting in accelerated diffusion of Nb into Ti. Micro hardness of the alloy increased from 340 to 355 HV with the increase in β phase content from 30 to 45%. The resultant alloys had relatively high densities and homogenized microstructures of dispersed lamellar β grains in α matrix.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 3; 1429-1432
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling and simulation of an ideal plug flow reactor for synthesis of ethyl oleate using homogeneous acid catalyst
Autorzy:
Barno, Suondos K.A.
Rashid, Sarmad A.
Abbas, Ammar S.
Powiązania:
https://bibliotekanauki.pl/articles/2034051.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
kinetics
simulation
ethyl oleate
product distribution
back-mixing
kinetyka
symulacja
oleinian etylu
dystrybucja produktu
mieszanie wsteczne
Opis:
The production of ethyl oleate, by homogenous acid esterification of oleic acid with ethanol, have discussed experimentally and via computational simulation in a plug flow reactor. An innovative simulation model has developed to predict the esterification reaction performance in an ideal plug flow reactor. The amount of H2SO4 acid catalyst, the initial molar ratio of alcohol to oleic acid, ethanol concentration, reaction temperature, and esterification time have examined their effects on ethyl oleate production and the conversion of oleic acid. Then the simulation extended to examine the esterification reaction kinetics and determine the reaction rate coefficients. The simulation results demonstrate that the increasing of H2SO4 acid, initial molar ratio of ethanol to oleic acid, ethanol concentration, and reaction temperature improved the productivity of the ethyl oleate and reduced the reactor space-time. The kinetics results illustrated that the reaction sensitivity to the temperature unchanging by using higher ethanol concentration and alcohol to oleic acid initial ratio. Lastly, the experimental yields at different conditions were slightly higher from those simulating with average values of 93.62 and 92.29%, respectively, indicating that the phenomenon of back-mixing cannot be ignored in esterification reactors, especially with a relatively high retention time within the reactor.
Źródło:
Chemical and Process Engineering; 2021, 42, 1; 53-68
0208-6425
2300-1925
Pojawia się w:
Chemical and Process Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
FORMULATION AND EVALUATION OF INDOMETHACIN LOADED NANOSPONGES FOR ORAL DELIVERY
Autorzy:
Abbas, Nasir
Sarwar, Komal
Irfan, Muhammad
Hussain, Amjad
Mehmood, Rabia
Arshad, Muhammad S.
Shah, Pervaiz A.
Powiązania:
https://bibliotekanauki.pl/articles/895238.pdf
Data publikacji:
2018-10-31
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
sustained release
indomethacin
Nanosponges
Emulsion solvent diffusion method
Franz diffusion cell
Opis:
Nanosponges (NS) loaded sustained release tablet formulations of a non-steroidal anti-inflammatory drug; Indomethacin were successfully developed and evaluated for their pharmaceutical properties. Twelve nanosponge formulations were fabricated by solvent diffusion method by using different ratios of drug and polymers (ethyl cellulose and polyvinyl alcohol). Particle size of all the formulations was in the nano range of 221 to 625 nm and it was found dependent on the polymer concentration. Drug loading and entrapment efficiency was ranged in 32.2 to 59.4 % and 30.1 to 64.8 %, respectively. Formulations with equal proportion of drug and polymer resulted in higher values of drug loading and entrapment efficiency. Percent yield was also found dependent on the relative drug polymer ratio with highest value of 51 % was achieved for the formulation having same drug to polymer ratio. SEM results confirmed the formation of spherical and porous structures. Structural analysis by Fourier transform infrared spectroscopy (FTIR), powder x-ray diffraction (PXRD) showed the absence of any interaction between drug and polymer. In comparison to pure drug, NS formulations showed a linear intrinsic dissolution rate (IDR) profile depicting a controlled release profile. Diffusion studies of NS formulations performed by Franz diffusion cell and dialysis bag methods showed comparable results in terms of precision and linearity of diffusion profile. Tablets prepared from the drug loaded NS showed acceptable values for hardness, friability and drug content. Release of drug from NS tablets was confirmed as sustained release behaviour.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 5; 1201-1213
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mapa i płot : Bliski Wschód
Autorzy:
Sheehan, Edward R. F.
Powiązania:
Gazeta Wyborcza 2003, nr 149. Dod. "Gazeta Świąteczna", s. 18-20
Współwytwórcy:
Sommer, Łukasz. Tłumaczenie
Data publikacji:
2003
Tematy:
Bush, George W. (1946- )
Szaron Ariel
Abbas, Mahmud
Mapa Drogowa (plan)
Konflikt palestyńsko-izraelski polityka
Palestyńczycy a Izrael polityka
Negocjacje pokojowe Izrael Palestyna
Polityka zagraniczna
Opis:
Wypow. amerykańskiego pisarza i publicysty, członka Weatherhead Center for International Affairs na Uniwersytecie Harvarda.
Fot.
Dostawca treści:
Bibliografia CBW
Artykuł
Tytuł:
An analysis of influential factors associated with rural crashes in a developing country: a case study of Iran
Autorzy:
Sheykhfard, Abbas
Haghighi, Farshidreza
Abbasalipoor, Reza
Powiązania:
https://bibliotekanauki.pl/articles/2173931.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
rural roads
severity of crashes
crashes
injury-fatal crashes
logit model
crash data collected
drogi wiejskie
ciężkość wypadków
awarie
wypadki śmiertelne
model logiczny
Opis:
Road traffic deaths continue to rise, reaching 1.35 million in recent years. Road traffic injuries are the eighth leading cause of death for people of all ages. Note that there is a wide difference in the crash rate between developed and developing countries and that developed countries report much lower crash rates than developing and underdeveloped countries. World Health Organization reports that over 80% of fatal road crashes occur in developing countries, while developed countries account for about 7% of the total. The rate of road crashes in developing countries is higher than the global average, despite some measures reducing deaths over the last decade. Numerous studies have been carried out on the safety of urban roads. However, comprehensive research evaluating influential factors associated with rural crashes in developing countries is still neglected. Therefore, it is crucial to understand how factors influence the severity of rural road crashes. In the present study, rural roads in Mazandaran province were considered a case study. The Crash data collected from the Iranian Legal Medicine Organization covers 2018 to 2021, including 2047 rural crashes. Dependent variables were classified as damage crashes and injury-fatal crashes. Besides, independent variables such as driver specifications, crash specifications, environment specifications, traffic specifications, and geometrical road specifications were considered parameters. The logit model data indicate that factors associated with driver and crash specifications influence rural crashes. The type of crashes is the most critical factor influencing the severity of crashes, on which the fatal rate depends. The findings suggested that implementing solutions that minimize the effect of the factors associated with injury and death on rural roads can reduce the severity of crashes on rural roads that share the same safety issues as the case study. Further studies can also be conducted on the safety and mechanics of the vehicle by focusing the research on the types of vehicles and the sources of the damage.
Źródło:
Archives of Transport; 2022, 63, 3; 53--65
0866-9546
2300-8830
Pojawia się w:
Archives of Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A Comparative Numerical and Experimental Study of Light Weight Materials for Neutralizing Explosive Reactive Armour
Autorzy:
Naeem, Khalid
Hussain, Arshad
Malik, Abdul Qadeer
Abbas, Shakeel
Ahmad, Iftikhar
Farrukh, Sarah
Powiązania:
https://bibliotekanauki.pl/articles/27788026.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Przemysłu Organicznego
Tematy:
simulation
explosive reactive armour
Kontakt-5
non-initiating precursor
tandem
Opis:
Explosive reactive armour (ERA) consists of an explosive sandwiched between two metal plates fitted on armoured vehicles to enhance their protection. To defeat an ERA mounted vehicle, its ERA must be neutralized first. A precursor fitted in a TANDEM warhead is used for this purpose in two modes. One is to detonate the ERA and the other is without detonation. This paper presents work performed on the ability of light-weight materials to neutralize the Kontakt-5 ERA without detonation. The precursor performing in this manner is known as a non-initiating precursor (NIP). Eight experiments were performed with aluminium, Teflon® and perspex as liners, against Kontakt-5 ERAs at about 90º and 30º inclination. In five of these experiments, the ERA did not detonate, however in three experiments it did detonated. In all of the experiments the precursor over-performed, producing a prominent hole in the target larger than that predicted by simulation. The over-performance was balanced by decreasing the angle of attack. These experiments demonstrated that an NIP depends strongly upon the ERA as well as on the angle of attack. The overall conclusion from this work is that an NIP is a promising technique to defeat a specific ERA without detonation.
Źródło:
Central European Journal of Energetic Materials; 2021, 18, 2; 271--286
1733-7178
Pojawia się w:
Central European Journal of Energetic Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A weakly coupled multi-core fibre-based Michelson interferometer composed of an in-fibre coupler
Autorzy:
Mumtaz, Farhan
Dai, Yutang
Wenbin, Hu
Abbas, Lashari Ghulam
Parveen, Rashda
Ashraf, Muhammad Aqueel
Powiązania:
https://bibliotekanauki.pl/articles/2063883.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Stowarzyszenie Elektryków Polskich
Tematy:
Michelson interferometer
in-fibre coupler
seven core fibre
temperature sensor
Opis:
A compact temperature measuring device using a weakly coupled multi-core fibre in the Michelson interferometer structure is proposed and experimentally demonstrated. The device is manufactured by an easy and simple splicing approach which consists of a multi-core fibre segment and an in-fibre coupler. In-fibre coupler is made of a cascaded single-mode fibre and multi-core fibre balls. It enhances the interference phenomenon of light nergy between the central core and the outer cores of a multi-core fibre. The sensor shows a high quality fringe visibility of about 14–18 dB in the wavelength spectrum. Multi-core structure presents multi-path interferences and exhibits a maximum temperature sensitivity of 70.6 pm/°C in the range of 20–90°C with an insensitive response to the refractive index in the range of 1.334 to 1.354. The device has the advantages of compact size, easy manufacturing, and it solves cross-sensitivity between temperature and refractive index making it an authentic real-time temperature monitoring solution.
Źródło:
Opto-Electronics Review; 2021, 29, 4; 117--125
1230-3402
Pojawia się w:
Opto-Electronics Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of natural fibers in stone mastic asphalt mixtures: a review of the literature
Autorzy:
AlSaadi, Israa
Tayh, Sady A.
Jasim, Abbas F.
Yousif, Rana
Powiązania:
https://bibliotekanauki.pl/articles/27312180.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
włókno celulozowe
właściwości mechaniczne
włókno naturalne
zawartość
mieszanka SMA
asfalt
włókno odpadowe
cellulose fiber
mechanical properties
natural fiber
content
stone mastic asphalt
waste fiber
Opis:
All over the world, highway traffic is increasing rapidly, as is the population and the road network. The country’s maximum and minimum temperatures also vary greatly. Moreover, the pavements are subjected to various types of damage. Pavement binders and mixtures are a constant area of research and development for scientists and engineers. Adding fibers to bituminous mixes may improve the properties of fatigue and strength of the material. Natural fibers may be used to improve asphalt mixtures performance due to their inherent compatibility with asphalt cement and excellent mechanical properties. Also, the high stone content and relatively high asphalt content in SMA mixture led to the occurrence of drain-down of the asphalt mastic from the mixture, and this problem requires the use of stabilizing additives such as cellulose fibers, mineral fibers, or polymers to mitigate this problem and ensure long-term performance. The most public sort of stabilizing additives is cellulose fiber. Overall, natural fibers in stone mastic asphalt mixes are discussed in this paper. An additional focus is on how asphalt concrete will be affected by natural fibers, mixing techniques, and managerial decisions. According to the review, the stabilizing and strengthening impact of natural fibers on the performance of asphalt mixes have been extensively researched. Natural fibers can significantly increase the rut and flow resistance of asphalt mixtures. Adding natural fibers to pavement can increase structural resistance to pavement distress.
Źródło:
Archives of Civil Engineering; 2023, 69, 3; 347--370
1230-2945
Pojawia się w:
Archives of Civil Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Removal of reactive yellow dye 145 from wastewaters over activated carbon that is derived from Iraqi kehdrawy date palm seeds
Autorzy:
Esmael, Hussein A.
Lafta, Abbas J.
Nema, Noor A.
Kahdum, Salih H.
Mousa, Abdulazeez A.
Abdali, O. Karar
Powiązania:
https://bibliotekanauki.pl/articles/1193943.pdf
Data publikacji:
2015
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Activated carbon
Activated charcoal
Adsorption over activated carbon
Textile dyes
activated carbon
date palm seeds
linear Freundlich
linear Langmuir
Opis:
This work involves synthesis of activated carbon from Iraqi date palm seeds as agricultural wastes using kehdrawy palm seeds. The preparation was conducted by chemical activation method using ZnCl2 as an activator. The synthesized activated carbon (AC) was characterized by different analytical and spectroscopic methods. This involves using scanning electron microscopy (SEM), flourier transformation infrared (FTIR), ash content, adsorption capacity, the percentage of humidity and the point zero charge (PZC). The activity of the prepared activated carbon was investigated by following the removal of reactive yellow 145 dye (RY 145) from the aqueous solutions. For a comparison a sample of non- activated carbon (NAC) was used in the same process. From the obtained results it was found that AC was more efficient in dye removal in comparison with NAC under the same conditions
Źródło:
World Scientific News; 2015, 21; 77-89
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Exact solution for heat conduction inside a sphere with heat absorption using the regularized Hilfer-Prabhakar derivative
Autorzy:
Elhadedy, Hager
Latif, Mohamed S. Abdel
Nour, Hamed M.
Kader, Abbas H. Abdel
Powiązania:
https://bibliotekanauki.pl/articles/2175524.pdf
Data publikacji:
2022
Wydawca:
Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:
fractional derivatives
Laplace transform
finite sine-Fourier transform
heat transfer
pochodne ułamkowe
transformata Laplace'a
skończona transformata sinusoidalna-Fouriera
wymiana ciepła
Opis:
In this article, we utilize the finite Sine-Fourier transform and the Laplace transform for solving fractional partial differential equations with regularized Hilfer-Prabhakar derivative. These transforms are used to get analytical solutions for the time fractional heat conduction equation (TFHCE) with the regularized Hilfer-Prabhakar derivative associated with heat absorption in spherical coordinates. Two cases of Dirichlet boundary conditions are considered by obtaining an analytical solution in each case. The effect of the parameters of the regularized Hilfer-Prabhakar derivative on the heat transfer inside the sphere is discussed using some figures.
Źródło:
Journal of Applied Mathematics and Computational Mechanics; 2022, 21, 2; 27--37
2299-9965
Pojawia się w:
Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sporadoceratid ammonoids from the Shotori Range (east-central Iran) - a case of putative gigantism caused by hydraulic sorting?
Autorzy:
Korn, Dieter
Ghaderi, Abbas
Devaere, Léa
Hairapetian, Vachik
Khanehbad, Mohammad
Belka, Zdzisław
Powiązania:
https://bibliotekanauki.pl/articles/949758.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Late Devonian
Famennian
Iran
ammonoids
body size
conodonts
dewon
famen
amonoidy
rozmiar
konodonty
Opis:
The Shotori Range of east-central Iran (east of Tabas) has yielded Famennian ammonoid assemblages dominated by the family Sporadoceratidae. Four genera Maeneceras Hyatt, 1884, Iranoceras Walliser, 1966, Sporadoceras Hyatt, 1884 and Erfoudites Korn, 1999 are represented. The conodont assemblage of one sample containing Iranoceras revealed an Upper marginifera Zone age. The ammonoid assemblages are characterised by comparatively large specimens; they reach conch diameters of 300 mm (including the body chamber) and the mean size is larger than 100 mm. The preservation of the material from the Shotori Range and size comparison with sporadoceratid assemblages from the Anti-Atlas of Morocco and the Rhenish Mountains of Germany suggest that hydraulic sorting has resulted in a bias towards large conchs, explaining the size distribution, rather than latitudinal differences. The new species Maeneceras tabasense is described; the genus Iranoceras is revised with a new description of the two species Iranoceras pachydiscus (Walliser, 1966) and Iranoceras pingue (Walliser, 1966).
Źródło:
Acta Geologica Polonica; 2019, 69, 1; 27-49
0001-5709
Pojawia się w:
Acta Geologica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Study of solidification behaviour and mechanical properties of arc stud welded AISI 316L stainless steel
Autorzy:
Abass, M. H.
Alali, M. S.
Abbas, W. S.
Shehab, A. A.
Powiązania:
https://bibliotekanauki.pl/articles/367964.pdf
Data publikacji:
2019
Wydawca:
Stowarzyszenie Komputerowej Nauki o Materiałach i Inżynierii Powierzchni w Gliwicach
Tematy:
arc stud welding
AISI 316L stainless steel
solidification mode
solidification cracking
second phase
spawanie łukowe
stal nierdzewna AISI 316L
model krzepnięcia
druga faza
Opis:
Purpose: This paper aims to investigate the impact of arc stud welding (ASW) process parameters on the microstructure and mechanical properties of AISI 316L stainless steel stud/plate joint. Design/methodology/approach: The weld performed using ASW machine. The influence of welding current and time on solidification mode and microstructure of the fusion zone (FZ) was investigated using optical microscope and scanning electron microscope (SEM). Microhardness and torque strength tests were utilised to evaluate the mechanical properties of the welding joint. Findings: The results showed that different solidification modes and microstructure were developed in the FZ. At 400 and 600 A welding currents with 0.2 s welding time, FZ microstructure characterised with single phase austenite or austenite as a primary phase. While with 800 A and 0.2 s, the microstructure consisted of ferrite as a primary phase. Highest hardness and maximum torque strength were recorded with 800 A. Solidification cracking was detected in the FZ at fully austenitic microstructure region. Research limitations/implications: The main challenge in this work was how to avoid the arc blow phenomenon, which is necessary to generate above 300 A. The formation of arc blow can affect negatively on mechanical and metallurgical properties of the weld. Practical implications: ASW of austenitic stainless steel are used in multiple industrial sectors such as heat exchangers, boilers, furnace, exhaust of nuclear power plant. Thus, controlling of solidification modes plays an important role in enhancing weld properties. Originality/value: Study the influence of welding current and time of ASW process on solidification modes, microstructure and mechanical properties of AISI 316 austenitic stainless steel stud/plate joint.
Źródło:
Journal of Achievements in Materials and Manufacturing Engineering; 2019, 97, 1; 5-14
1734-8412
Pojawia się w:
Journal of Achievements in Materials and Manufacturing Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Some new existence results and stability concepts for fractional partial random differential equations
Autorzy:
Abbas, S.
Benchohra, M.
Darwish, M. A.
Powiązania:
https://bibliotekanauki.pl/articles/357770.pdf
Data publikacji:
2016
Wydawca:
Politechnika Rzeszowska im. Ignacego Łukasiewicza. Oficyna Wydawnicza
Tematy:
random differential equations
left-sided mixed Riemann-Liouville integral
Caputo fractional-order derivative
Banach space
Darboux problem
Ulam stability
równanie różniczkowe
pochodna Caputo
przestrzeń Banacha
problem Darbouxa
Opis:
In the present paper we provide some existence results and Ulam’s type stability concepts for the Darboux problem of partial fractional random differential equations in Banach spaces, by applying the measure of noncompactness and a random fixed point theorem with stochastic domain.
Źródło:
Journal of Mathematics and Applications; 2016, 39; 5-22
1733-6775
2300-9926
Pojawia się w:
Journal of Mathematics and Applications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
BOX BEHNKEN DESIGN: A STATISTICAL APPROACH TO EVALUATE THE EFFECT OF CROSSLINKED CARBOXYMETHYL CELLULOSE AND SODIUM STARCH GLYCOLATE ON RELEASE KINETICS OF DRUG
Autorzy:
Hanif, Muhammad
Abbas, Ghulam
Rasul, Akhtar
Khan, Sajid M.
Amir, Muhammad N.
Powiązania:
https://bibliotekanauki.pl/articles/895395.pdf
Data publikacji:
2018-08-31
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
FTIR
XRD
DSC
quality by design
domperidone maleate
drug release kinetics
Opis:
The aim of study was to evaluate the release kinetics of domperidone maleate (DM) from immediate release (IR) tablets prepared by wet granulation method. Box behnken design (BBD) was used to optimize and evaluate the main, interaction and quadratic effects of independent variables i.e. crosslinked carboxymethyl cellulose (CMC) (X1), sodium starch glycolate (SSG) (X2) and starch (X3) on responses R2 of first order (YI) and β value of weibull model (Y2). Prepared tablets were characterized by various physical tests, in-vitro drug release, fourier transform infrared spectroscopy (FTIR), X-ray diffractometry (XRD) and differential scanning calorimetry (DSC). Accelerated stabilities studies were performed on optimized formulation D9. Y1 and Y2 were ranged from 0.9959 to 0.9994 and 0.041 to 0.912 respectively. β value of weibull model indicated the parabolic shape of dissolution curve. The quadratic model fit the data well and the resulting equations were used to predict the responses in the box behnken design. FTIR spectra showed the compatibility of DM with CMC and SSG. XRD presented diffraction lines indicates crystalline nature of drug. DSC thermograms indicated endothermic peak at 220 0C for DM. Stabilities studies revealed that no significant change in hardness, friability, disintegration time and dissolution release profile of DM. It is concluded that a combination of CMC and SSG can be used to enhance the dissolution and release kinetics of IR tablets of DM.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2018, 75, 4; 965-975
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Predicting and minimizing the blasting cost in limestone mines using a combination of gene expression programming and particle swarm optimization
Autorzy:
Bastami, Reza
Bazzazi, Abbas Aghajani
Shoormasti, Hadi Hamidian
Ahangari, Kaveh
Powiązania:
https://bibliotekanauki.pl/articles/1853861.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
kopalnia wapienia
wybuch detonacyjny
regresja nieliniowa
blasting cost
limestone mine
gene expression programming
non-linear multivariate regression
particle swarm optimization algorithm
environmental impacts
Opis:
Blasting cost prediction and optimization is of great importance and significance to achieve optimal fragmentation through controlling the adverse consequences of the blasting process. By gathering explosive data from six limestone mines in Iran, the present study aimed to develop a model to predict blasting cost, by gene expression programming method. The model presented a higher correlation coefficient (0.933) and a lower root mean square error (1088) comparing to the linear and nonlinear multivariate regression models. Based on the sensitivity analysis, spacing and ANFO value had the most and least impact on blasting cost, respectively. In addition to achieving blasting cost equation, the constraints such as frag-mentation, fly rock, and back break were considered and analyzed by the gene expression programming method for blasting cost optimization. The results showed that the ANFO value was 9634 kg, hole dia-meter 76 mm, hole number 398, hole length 8.8 m, burden 2.8 m, spacing 3.4 m, hardness 3 Mhos, and uniaxial compressive strength 530 kg/cm2 as the blast design parameters, and blasting cost was obtainedas 6072 Rials/ton, by taking into account all the constraints. Compared to the lowest blasting cost among the 146-research data (7157 Rials/ton), this cost led to a 15.2% reduction in the blasting cost and optimal control of the adverse consequences of the blasting process.
Źródło:
Archives of Mining Sciences; 2020, 65, 4; 835-850
0860-7001
Pojawia się w:
Archives of Mining Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heterosis for yield and yield components in diallel crosses of Brassica napus L.
Heterozja dla plonu i jego składników w krzyżowaniu diallelicznym rzepaku (Brassica napus L.)
Autorzy:
Farhatullah, F.
Khan, N.A.
Abbas, S.J.
Powiązania:
https://bibliotekanauki.pl/articles/832735.pdf
Data publikacji:
2006
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
heterosis
yield
yield component
diallel cross
Brassica napus
hybrid
F1 hybrid
rapeseed
Pakistan
breeding programme
plant breeding
Źródło:
Rośliny Oleiste - Oilseed Crops; 2006, 27, 1
1233-8273
Pojawia się w:
Rośliny Oleiste - Oilseed Crops
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Financial Development and Sustainable Competitiveness in Arctic Region: A Dynamic Panel Data Analysis
Rozwój finansowy i zrównoważona konkurencyjność w regionie Arktyki: analiza dynamiczna danych panelowych
Autorzy:
Yahya, Farzan
Abbas, Ghulam
Hussain, Muhammad
Waqas, Muhammad
Powiązania:
https://bibliotekanauki.pl/articles/2080650.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Komitet Człowiek i Środowisko PAN
Tematy:
sustainable competitiveness
financial development
social cohesion
resource intensity
natural capital
zrównoważona konkurencyjność
rozwój finansowy
zasobochłonność
spójność społeczna
kapitał naturalny
Opis:
The present study investigates the effect of financial development on sustainable competitiveness and its components (natural capital, resource intensity, and social cohesion) in the Arctic region. We employ bank-based, stock-market based, and composite index to measure financial development. To deal with endogeneity bias, system GMM is utilized. The results show a positive and significant effect of financial development on sustainable competitiveness. The estimates also assert that financial development encourages resource efficiency and social cohesion in the region. In contrast, we find the negative effect of financial development on natural capital. This suggests that overexploitation of natural resources may provide short-term benefits to the local and regional communities but it may threaten the long-term sustainability of the Arctic. Thus, the financial sector should be guided to support financing and investing activities in alternative eco-friendly technologies and ventures for reducing excessive natural resource utilization.
W niniejszej pracy zbadano wpływ rozwoju finansowego na zrównoważoną konkurencyjność i jej komponenty (kapitał naturalny, zasobochłonność i spójność społeczną) w regionie Arktyki. Do pomiaru rozwoju finansowego stosujemy indeksy bankowe, giełdowe i złożone. Aby poradzić sobie z błędem endogenności, wykorzystywany jest system GMM. Wyniki pokazują pozytywny i znaczący wpływ rozwoju finansowego na zrównoważoną konkurencyjność. Szacunki potwierdzają również, że rozwój finansowy sprzyja efektywnemu gospodarowaniu zasobami i spójności społecznej w regionie. Z drugiej strony dostrzegamy negatywny wpływ rozwoju finansowego na kapitał naturalny. Sugeruje to, że nadmierna eksploatacja zasobów naturalnych może przynieść krótkoterminowe korzyści społecznościom lokalnym i regionalnym, ale może zagrozić długoterminowej stabilności Arktyki. Sektor finansowy powinien zatem kierować się wspieraniem finansowania i inwestowania w alternatywne technologie przyjazne dla środowiska oraz przedsięwzięcia mające na celu ograniczenie nadmiernego wykorzystania zasobów naturalnych.
Źródło:
Problemy Ekorozwoju; 2022, 17, 1; 267--278
1895-6912
Pojawia się w:
Problemy Ekorozwoju
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatial distribution of early blight disease on tomato, climatic factors and bioefficacy of plant extracts against Alternaria solani
Autorzy:
Hussain, A.
Ali, S.
Abbas, H.
Ali, H.
Khan, S.W.
Powiązania:
https://bibliotekanauki.pl/articles/12689876.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Przyrodniczy w Lublinie. Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie
Tematy:
Pakistan
plant cultivation
tomato
vegetable
climatic factor
bioefficacy
plant extract
plant pathogen
Alternaria solani
plant disease
blight
early blight
field survey
spatial distribution
spatial analysis
Geographic Information System
Opis:
Information on the spatial variability in plant disease is essential for location-based disease management. In the current study, the spatial distribution of tomato early blight disease was ascertained in District Gilgit, GilgitBaltistan, Pakistan. The comprehensive field survey was carried in two growing seasons (2014–2015), whereas in each growing season, 62 tomato fields were surveyed. Based on the distribution of disease, the respective thematic maps (incidence and severity) were prepared using Arc Map 10.1 with spatial analyst function of Arc GIS software by means of the inverse distance weight (IDW) interpolation method. Results indicate that early blight of tomato is spatially distributed in both growing seasons. However, in the first growing season, the disease incidence ranged from 10.22% to 44.16% and during later season 14.03–49.16%, whereas 5.37–16.40% and 6.52–26.94% severity was recorded. Furthermore, this information indicates that higher disease infestation occurred in 2015 in relation to 2014. This information linked to metrological data (temperature, precipitation and relative humidity), seemingly favored the early blight development during the growing period. Seven botanical extracts were tested against pathogen Alternaria solani at different concentrations (4, 6 and 8%). Results revealed that all tested plant extracts showed antifungal activities. However, at 8% concentration of plant extract, Datura starmonium, Berberis orthobotry, Podophyllum emodi and Uretica dioica exhibited >60%, while Peganum harmala, Artemisia maritima and Capparis spinosa <60% antifungal properties. The information generated due to this study could help the tomato growers regarding disease management and selection of resistant cultivars, improving profitability and food security in the Gilgit region.
Źródło:
Acta Scientiarum Polonorum. Hortorum Cultus; 2019, 18, 6; 29-38
1644-0692
Pojawia się w:
Acta Scientiarum Polonorum. Hortorum Cultus
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Golden Age Population, Healthy Environment, Growth and Poverty: Are Malaysia Really in a Sustainable Condition?
Populacja Złotego Wieku, zdrowe środowisko, wzrost i ubóstwo: czy Malezja rozwija się w sposób zrównoważony?
Autorzy:
Loganathan, Nanthakumar
Laxman, Lekha Kunju Pillai
Mardani, Abbas
Streimikiene, Dalia
Hassan, Asan Ali Golam
Powiązania:
https://bibliotekanauki.pl/articles/371605.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Komitet Człowiek i Środowisko PAN
Tematy:
aging population
healthy environment
growth
poverty
quantile regression
starzejąca się populacja
zdrowe środowisko
wzrost
ubóstwo
regresja kwantylu
Opis:
This study analyses the sustainability condition of a healthy environment, economic growth and poverty level in relation to the golden age population in Malaysia based on the quantile regression estimates covering the period of 1960 until 2016. Generally, studies on aging population have generated attention globally due to its possible impact on health care, greenhouse gas emissions, globalization, investment for the purpose of research and development, income inequality and energy consumption. More specifically, evidence from the current empirical study shows a positive sign of the bootstrap quantile regression relationship between a healthy environment and per capita income with the aging population. This ensures that, the country is facing the growth-led-aging population condition. Furthermore, the findings have also revealed that poverty is giving a negative effect with the aging population grows. This study may suggest a re-evaluating of the existing theories of aging population and provide new insights for policy-makers for the purpose of sustainable population planning for up-coming decades.
W niniejszym artykule dokonano analizy stanu zrównoważenia i zdrowia środowiska, wzrost gospodarczy i poziom ubóstwa w odniesieniu do populacji w Złotym Wieku w Malezji, na podstawie szacunków regresji kwantylu obejmujących okres lat 1960-2016.Uogólniając, studia odnoszące się do starzejącej się populacji wzbudzają szerokie zainteresowanie z uwagi na jej możliwy wpływ na opiekę zdrowotną, emisje gazów cieplarnianych, globalizację, inwestycje w badania i rozwoju, nierówności dochodów i zużycie energii. Dokładniej rzecz ujmując, dowody z obecnego badania empirycznego pokazują pozytywny znak relacji bootstrapingowanej regresji kwantylu między zdrowym środowiskiem a dochodem na mieszkańca w stosunku do starzejącej się populacji. Wykazuje to, że kraj stoi w obliczu starzenia się społeczeństwa pod wpływem wzrostu. Ponadto okazało się, że, ubóstwo pociąga za sobą negatywny efekt w kontekście starzenia się populacji. Przeprowadzone badanie sugeruje konieczność ponownego przeanalizowania istniejących teorii starzenia się społeczeństwa i dostarcza decydentom nowych informacji na temat zrównoważonego planowania populacji na nadchodzące dziesięciolecia.
Źródło:
Problemy Ekorozwoju; 2019, 14, 2; 201-212
1895-6912
Pojawia się w:
Problemy Ekorozwoju
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lived Experiences of Companions of COVID-19 Patients Admitted to COVID-19 Hospitals: a Retrospective Cross-Sectional Study
Doświadczenia bliskich pacjentów z COVID-19 przyjętych do szpitali pandemicznych: retrospektywne badanie przekrojowe
Autorzy:
Abdulah, Deldar Morad
Mirza, Abbas Muhammed Sadiq
Hassan, Zeravan Asaad
Powiązania:
https://bibliotekanauki.pl/articles/31341064.pdf
Data publikacji:
2024
Wydawca:
Akademia Bialska im. Jana Pawła II
Tematy:
satisfaction
mental health
environment
communication
behavior
zadowolenie
zdrowie psychiczne
środowisko
komunikacja
zachowanie
Opis:
Background. Due to the lack of evidence, the positive and negative experiences of companions of COVID-19 patients during their communication with medical staff in COVID-19 hospitals were explored. Material and methods. This research study encompassed a cross-sectional analysis of 437 companions of COVID-19 patients. Results. The patients’ diseases were: mild (34.55%), moderate (27.92%), severe (20.14%), and critical (17.39%). The most prevalent comorbidities were cardiovascular disease (16.7%), obesity (16.48%), endocrine and metabolic disorders (14.42%), and smoking (13.73%). Out of the total of 437 patients included in the study, 23.80% died. The study revealed that 79.63% and 71.40% of companions had regular communication with the medical staff, and received relevant and sufficient information about the patients’ medical conditions, respectively. Regarding mental health, 34.55% of companions reported fear of COVID-19 infection at the hospitals, and 66.59% expressed fear of patients’ death. A considerable percentage had conflicts with medical staff. They expressed satisfaction with the healthcare and treatment and were informed and medical staff were available on need. The hospital environment was quiet, but not in terms of psychological well-being. Conclusions. Most companions were satisfied with treatment procedures at the COVID-19 hospitals, but a percentage were affected by ambient noise and other patients’ fear.
Wprowadzenie. Biorąc pod uwagę brak stosownych danych, przyjrzano się pozytywnym oraz negatywnym doświadczeniom bliskich towarzyszących pacjentom chorującym na COVID-19 przyjętych do szpitali zajmujących się leczeniem tej choroby w kontekście komunikacji z pracownikami ochrony zdrowia zatrudnionymi w tych szpitalach. Materiał i metody. Opracowanie stanowi przekrojową analizę przeprowadzoną na próbie bliskich 437 pacjentów chorujących na COVID-19. Wyniki. Przyjmowani pacjenci cierpieli na łagodną (34,55%), umiarkowaną (27,92%), ciężką (20,14%) i krytyczną (17,39%) postać choroby. Najczęściej występującymi chorobami współistniejącymi wśród pacjentów były choroby układu krążenia (16,7%), otyłość (16,48%), zaburzenia endokrynologiczne i metabolizmu (14,42%) oraz uzależnienie od tytoniu (13,73%). Spośród 437 pacjentów objętych badaniem 23,80% zmarło. Wyniki badań wskazują, że 79,63% bliskich pacjentów regularnie kontaktowało się z pracownikami ochrony zdrowia, 71,40% otrzymywało stosowne i wyczerpujące informacje na temat ich stanu zdrowia. Z punktu widzenia zdrowia psychicznego, 34,55% respondentów wspomniało o obawach przed zakażeniem COVID-19 w szpitalach, 66,59% obawiało się śmierci przyjętych do szpitali pacjentów. Znaczący odsetek bliskich pacjentów wszedł w różne konflikty z personelem szpitali. Ponadto respondenci opisywali zadowolenie z opieki, jaką szpitale otoczyły pacjentów oraz z zastosowanego leczenia, a także z dostępności pracowników ochrony zdrowia w razie potrzeby. Spokój i cisza panująca w szpitalach nie sprzyjała dobrostanowi psychicznemu badanych. Wnioski. Większość bliskich pacjentów była zadowolona ze sposobu leczenia stosowanego w szpitalach zajmujących się COVID-19, jednak część z nich doświadczyła hałasu w otoczeniu oraz odczuwała wpływ strachu i lęku innych pacjentów.
Źródło:
Health Problems of Civilization; 2024, 18, 1; 43-54
2353-6942
2354-0265
Pojawia się w:
Health Problems of Civilization
Dostawca treści:
Biblioteka Nauki
Artykuł
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