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Wyświetlanie 1-10 z 66
Tytuł:
Factors affecting the susceptibility of sea lice infection in Atlantic salmon
Autorzy:
Mustafa, A.
Piasecki, W.
Tematy:
Lepeophtheirus salmonis
fish parasite
Salmo salar
Atlantic salmon
fish
Caligus elongatus
sea lice
infection
sea louse
susceptibility
Pokaż więcej
Wydawca:
Polskie Towarzystwo Parazytologiczne
Powiązania:
https://bibliotekanauki.pl/articles/2146418.pdf  Link otwiera się w nowym oknie
Opis:
Parasitic copepods of the family Caligidae, otherwise known as sea lice (Lepeophtheirus salmonis and Caligus elongatus), are responsible for serious disease problems in salmon aquaculture. This mini-review examines the host factors that are affecting the susceptibility of sea lice infection in salmon; in particular, host species, environment, host stress levels, and host immunocompetency. In order to develop more effective methods to control sea lice infection, these factors should be taken into account, along with other factors such as sea lice life cycle and fecundity as well as salmon husbandry methods.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment Water Quality Indices of Surface Water for Drinking and Irrigation Applications – A Comparison Review
Autorzy:
Al Yousif, Mustafa A.
Chabuk, Ali
Tematy:
WQI
water quality index
drinking use
irrigation use
index
WQR
water quality rating
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Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:
https://bibliotekanauki.pl/articles/24201763.pdf  Link otwiera się w nowym oknie
Opis:
Water is one of the most important natural resources for all living organisms, including humans. Water consumption is increasing over the years as a result of the increase in the number of people, and at the same time, the causes of pollution of surface water sources increase. Water pollution is one of the most important causes of diseases and the transmission of infection to the organisms that use it. Also, the quality of agricultural crops is linked to the quality of the water used for irrigation. As a result, there was a need to monitor and evaluate the main water sources to maintain the quality of their water suitable for use by humans and other organisms. As is well known, it is difficult to evaluate the water quality of large samples with concentrations of many parameters using traditional methods, which depend on comparing experimentally determined parameter values with current standards. As a result, over the past century and the present, many methods of assessing water quality have emerged. This research aims to introduce the most important indices of water quality used at present to assess the quality of surface water for drinking and irrigation purposes, as well as the history of these methods and their development over time and their most important advantages, in addition to a group of the most important research that used these methods during the past few years.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of the Al-Abbasiyah River (Iraq) Water Quality for Drinking Purposes Using the Water Quality Index and GIS Software
Autorzy:
Al Yousif, Mustafa A.
Chabuk, Ali
Tematy:
WQI
water quality index
drinking use
Al-Abbasiyah River
wet season
dry season
water quality
GIS
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Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:
https://bibliotekanauki.pl/articles/59114076.pdf  Link otwiera się w nowym oknie
Opis:
All kinds of life, including people, animals, plants, and other species, depend on the rich natural resources of water. However, this valuable resource is becoming increasingly threatened by the increasing population as well as the growing demand for quality water for domestic and economic purposes. Hence the requirement for ongoing river water quality monitoring and assessment. In this research, the water quality (WQ) of the Al-Abbasiyah River was assessed for drinking uses in the dry and wet seasons using the weighted arithmetic water quality index (WAWQI) and GIS software. Eighteen physical, chemical, and biological parameters were measured in 2022 (dry season) and 2023 (wet season) by collecting samples from eight locations along the river. These parameters are: Temperature, EC, pH, TDS, TSS, Turbidity, DO, BOD5, alkalinity, NO3-, HCO3-, Cl-, Mg+2, Ca+2, Na+, K+, TH, and SO4-2. The average of the measured water parameters showed that some of these parameters exceeded the standards limit of the WHO in all locations such as (Alk, TH, Ca+2, Mg+2, SO4-2) and at some locations such as (TDS, Turbidity, and HCO3-). During the dry season, the WA-WQI values varied between 70.33 in (L4) within the category of “poor” and 119.87 in (L7) within the category of “unsuitable”, while in the wet season varied between 49.71 in (L5) within the category of “good”, and 79.35 in (L2) within the category of “poor”. Thus, the water of the Al-Abbasiyah River was unfit for drinking directly and must undergo treatment before use in both seasons.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Biological notes on jerboas Allactaga euphratica and Jaculus jaculus from Iraq
Autorzy:
Jabir, H. A.
Mustafa, A. M.
Kadhim, A. H.
Powiązania:
Acta Theriologica
Opis:
Activity and moulting of two species of jerboas, Allactaga euphratica Thomas, 1881 and Jaculus jaculus (Linnaeus, 1758) were studied in the vicinity of Samara (122 km. N of Baghdad) in Iraq during the period from January to December 1977.
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
Tytuł:
Using Machine Learning Algorithms to Predict the Sweetness of Bananas at Different Drying Times
Autorzy:
Al-Mashhadany, Sufyan A.
Hasan, Haider Ali
Al-Sammarraie, Mustafa A.J.
Tematy:
drying time
machine learning
prediction
sweetness
quality
Pokaż więcej
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:
https://bibliotekanauki.pl/articles/59114415.pdf  Link otwiera się w nowym oknie
Opis:
The consumption of dried bananas has increased because they contain essential nutrients. In order to preserve bananas for a longer period, a drying process is carried out, which makes them a light snack that does not spoil quickly. On the other hand, machine learning algorithms can be used to predict the sweetness of dried bananas. The article aimed to study the effect of different drying times (6, 8, and 10 hours) using an air dryer on some physical and chemical characteristics of bananas, including CIE-L*a*b, water content, carbohydrates, and sweetness. Also predicting the sweetness of dried bananas based on the CIE-L*a*b ratios using machine learning algorithms RF, SVM, LDA, KNN, and CART. The results showed that increasing the drying time led to an increase in carbohydrates, sweetness, and CIE-L*a*b levels, while it led to a decrease in the moisture content in dried banana slices. Therefore, there is a direct relationship between CIE-L*a*b levels and sweetness. On the other hand, the RF and CART algorithms gave the highest prediction accuracy of 86% and 0.8 on the Kappa measure. While the other algorithms (SVM, LDA, KNN) gave a prediction accuracy of 80% and 0.7 on the Kappa measure. In terms of testing statistical significance, the null hypothesis (H0) was accepted because there is no relationship between the metric distributions of the algorithms used.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Using Eucalyptus Peels as a Permeable Reactive Barrier for Treating Groundwater Contaminated with Copper Ions – A Simulation with COMSOL Software
Autorzy:
Muhammed, Shno Mustafa Ali
Al-Qaisi, Atheer Zaki
Al Yousif, Mustafa A.
Alkadhim, Nooruldeen
Tematy:
permeable reactive barrier
copper
eucalyptus peels
activated carbon
ground water
migration
Pokaż więcej
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:
https://bibliotekanauki.pl/articles/59114198.pdf  Link otwiera się w nowym oknie
Opis:
This study investigated the use of eucalyptus peels as a permeable reactive barrier (PRB) for treating groundwater contaminated with copper ions. Activated carbon was produced from eucalyptus peels, and its adsorption capacity for copper removal was evaluated through laboratory experiments. COMSOL software was used to simulate the performance of the eucalyptus peel-based PRB in order to optimize the design as well as predict the efficiency and longevity of the barrier. Batch studies were conducted to evaluate how factors such as the initial concentration of the contaminant, pH level, contact time, amount of sorbent used, and agitation speed affected the results. The results show that the optimal values of these factors were a 50 ppm concentration, a pH of 6, an 80-minute contact time, a dosage of 2 mg per 100 ml, and a stirring speed of 250 rpm. These findings demonstrate that eucalyptus peels, being an agricultural waste product, can be effectively converted into activated carbon with a high adsorption capacity (equal to 91.5%) for copper ions. To analyze the data, researchers utilized COMSOL Multiphysics 3.5a software, which employs the finite element method to solve the equations that describe the one-dimensional (1D) movement of copper under equilibrium conditions. Compared to other organic and inorganic adsorbents commonly used in PRBs, eucalyptus peels showed promising results in terms of adsorption capacity and cost-effectiveness. This study contributes to the development of innovative and sustainable remediation strategies for groundwater contaminated with heavy metals like copper. The findings demonstrate the potential of eucalyptus peels as a viable alternative to traditional adsorbents used in PRBs, promoting the use of renewable materials in environmental management and indicating that the PRB significantly impedes the movement of the copper plume. Ultimately, the predictions from the COMSOL simulations were very close to the actual experimental results, with a root mean square error (RMSE) of less than 1%.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reduction of random telegraph signal (RTS) noise in CMOS image sensors using histogram analysis
Autorzy:
bin Mustafa, M. A.
Itoh, S.
Kawahito, S.
Tematy:
histogram analyses
random telegraph signal (RTS) noise
CMOS image sensor
low-noise
estimated amplitude
Pokaż więcej
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Powiązania:
https://bibliotekanauki.pl/articles/385238.pdf  Link otwiera się w nowym oknie
Opis:
The paper presents column parallel signal processing techniques for reducing Random Telegraph Signal (RTS) noise of in-pixel source follower by using histogram analysis for the development of a very low-noise CMOS image sensor. In this method, a histogram with multiple samples for reset level is used to estimate the amplitude of the RTS noise. With the median of the histogram and the estimated amplitude, the RTS noise components are removed and the average is calculated with the histogram due to thermal noise only, to further reduce the noise level. Result of the application of the histogram-based noise suppres-sion to an implemented CMOS image sensor prototype for a large sampling numbers is demonstrated.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fabrication and Characterization of Polyphenylsulfone/Titanium Oxide Nanocomposite Membranes for Oily Wastewater Treatment
Autorzy:
Al-Jadir, Thaer
Alardhi, Saja Mohsen
Alheety, Mustafa A.
Najim, Aya A.
Salih, Issam K.
Al-Furaiji, Mustafa
Alsalhy, Qusay F.
Tematy:
PPSU
polyphenylsulfone
TiO2
nanoparticles
ultrafiltration membrane
oily wastewater treatment
antifouling
Pokaż więcej
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Powiązania:
https://bibliotekanauki.pl/articles/2202289.pdf  Link otwiera się w nowym oknie
Opis:
Polyphenylsulfone (PPSU) membranes are critical for numerous applications, including water treatment, oil separation, energy production, electronic manufacturing, and biomedicine because of their low cost; regulated crystallinity; and chemical, thermal, and mechanical stability. Numerous studies have shown that altering the surface characteristics of PPSU membranes affects their stability and functionality. Nanocomposite membranes of PPSU (P0), PPSU-1%TiO2 (P1), and PPSU-2% TiO2 (P2) were prepared using the phase inversion method. Scanning electron microscopy and thermal analysis were performed to determine the contact angle and mechanical integrity of the proposed membranes. The results showed that the membranes contained channels of different diameters extending between 1.8 μm and 10.3 μm, which made them useful in removing oil. Thermal measurements showed that all of the PPSU membranes were stable at a temperature of not less than 240 °C, and had good mechanical properties, including tensile strength of 7.92 MPa and elongation of 0.217%. These properties enabled them to function in a harsh thermal environment. The experimental results of oil and water separation and BSA solution fouling on membrane P2 showed a 92.95% rejection rate and a flux recovery ratio of 82.56%, respectively, compared to P0 and P1.
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-10 z 66

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