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Mokhtar Mahdavi, Afshin Ebrahimi, Amir Hossein Mahvi, Ali Fatehizadeh, Farham Karakani, Hossein Azarpira
This dataset deals with the modification of granular activated carbon (GAC) with FeCl3 under basic conditions (pH ≈ 12) for removal of aluminium (Al) from aqueous solution. The structural properties and operational parameters including Al ion concentration (2.15 and 10.3 mg/L), pH solution (2-10), adsorbent dosage (0.1-5 g/L), and contact time (0-10 h) was investigated for raw and modified GAC. This dataset provides information about Al removal by GAC and modified GAC at conditions including: pH = 8, contact time = 6 h, initial Al concentration = 2...
April 2018: Data in Brief
Mohammad Amin Gholami, Masihollah Forouzmand, Mokhtar Khajavi, Shima Hossienifar, Reza Naghiha
The purpose of this study was to investigate the effect of different corn processing methods on rumen microbial flora, histomorphometry and fermentation in fattening male lambs. Twenty male lambs (average age and weight of 90 days and 25.00 ± 1.10 kg, respectively) were used in a completely randomized design including four treatments and five replicates each over 80 days long period: 1) Lambs fed ground corn seeds; 2) Lambs fed steam-rolled corn; 3) Lambs fed soaked corn seeds (24 hr) and 4) Lambs fed soaked corn seeds (48 hr)...
2018: Veterinary Research Forum
Sousna Sahnoun, Mokhtar Boutahala
The present work focused on the performance of chitosan/polyaniline (Cht-PANI) composite for removing tartrazine dye from aqueous solutions. The adsorbent was characterized using SEM, XRD, FTIR, and TGA/DTA techniques. The effects of pH, initial dye concentration, contact time, and temperature on azo dye removal were studied. The kinetics and isotherm of tartrazine removal follow pseudo-second-order kinetics and the Freundlich isotherm, respectively. The Langmiur isotherm model exhibted a maximum adsorption capacity of 584...
February 24, 2018: International Journal of Biological Macromolecules
Mokhtar M Mabrouk, Sherin F Hammad, Samah F El-Malla, Eman A Elshenawy
Highly sensitive, rapid, accurate and precise synchronous fluorescence spectrofluorimetric method has been developed for simultaneous analysis of a mixture of amlodipine (AMD) and metoprolol (MET). The method relies on measuring the relative synchronous fluorescence intensity of both drugs at Δλ of 90 nm in acetate buffer solution at pH 5. The experimental parameters influencing the developed method were investigated and optimized. The method was linear over the ranges 0.2-2 μg/ml and 0.5-10 μg/ml for AMD and MET, respectively...
March 2018: Luminescence: the Journal of Biological and Chemical Luminescence
Ahlem Ellili, Jacques Rabier, Pascale Prudent, Marie-Dominique Salducci, Alma Heckenroth, Mokhtar Lachaâl, Isabelle Laffont-Schwob
In polluted protected areas, using phytoremediation raises the question of the choice of the plant species to select. As an example, Atriplex halimus has been identified as a proliferative plant species that needs to be eradicated in the Calanques National Park (PNCal). Since it has been proven that the spontaneous populations of this plant species could phytostabilize shore waste deposits generated by past industrial activities within the PNCal territory, its status seems controversial, presenting a dilemma between biodiversity management of a protected area and ecological solutions for pollution management...
October 1, 2017: Journal of Environmental Management
Hazzeman Haris, Ley Juen Looi, Ahmad Zaharin Aris, Nor Farhanna Mokhtar, Nur Ain Ayunie Ayob, Fatimah Md Yusoff, Abu Bakar Salleh, Sarva Mangala Praveena
The aim of the present study was to appraise the levels of heavy metal contamination (Zn and Pb) in sediment of the Langat River (Selangor, Malaysia). Samples were collected randomly from 15 sampling stations located along the Langat River. The parameters measured were pH, redox potential, salinity, electrical conductivity, loss of ignition, cation exchanges capacity (Na, Mg, Ca, K), and metal ions (Zn and Pb). The geo-accumulation index (Igeo ) and contamination factor (Cf ) were applied to determine and classify the magnitude of heavy metal pollution in this urban river sediment...
December 2017: Environmental Geochemistry and Health
Sana Frindy, Ana Primo, Hamid Ennajih, Abou El Kacem Qaiss, Rachid Bouhfid, Mohamed Lahcini, El Mokhtar Essassi, Hermenegildo Garcia, Abdelkrim El Kadib
The intimate interplay of chitosan (CS) and graphene oxide (GO) in aqueous acidic solution has been explored to design upon casting, nanostructured "brick-and-mortar" films (CS-GO-f) and by acidic-to-basic pH inversion, porous CO2 -dried aerogel microspheres (CS-GO-m). Owing to the presence of oxygenated functional groups in GO, good-quality crack-free hybrid films were obtained. Mechanical properties were improved independently of the GO content and it was found that a 20wt% loading affords hybrid film characterized with a Young modulus three times superior to that reached with the same loading of layered clay...
July 1, 2017: Carbohydrate Polymers
Nassima Djebri, Mokhtar Boutahala, Nacer-Eddine Chelali, Nadia Boukhalfa, Larbi Zeroual
In this study, acid-activated organobentonite (OAB), calcium alginate (A) and calcium alginate/acid-activated organobentonite composite beads (A-OAB) were prepared and applied for the removal of methylene blue from solutions in batch system. The zero point charge of pH (pHpzc), Scanning electron microscopy (SEM) and Fourier transformed infrared spectroscopy (FTIR) analysis were carried out. The effects of pH solution (2-11), temperature (15, 25, 35 and 45°C), initial concentration (20-500mg/L), and contact time were investigated...
November 2016: International Journal of Biological Macromolecules
Abdollah Gholami Akerdi, S Hajir Bahrami, Mokhtar Arami, Elmira Pajootan
Textile industry consumes remarkable amounts of water during various operations. A significant portion of the water discharge to environment is in the form of colored contaminant. The present research reports the photocatalytic degradation of anionic dye effluent using immobilized TiO2 nanoparticle on graphene oxide (GO) fabricated carbon electrodes. Acid Red 14 (AR 14) was used as model compound. Graphene oxide nanosheets were synthesized from graphite powder using modified Hummer's method. The nanosheets were characterized with field emission scanning electron microscope (FESEM) images, X-ray diffraction (XRD) and FTIR spectrum...
September 2016: Chemosphere
Munirah Binti Mokhtar, Hasna Binti Hashim, Sanmukh R Joshi
BACKGROUND: A use of platelet additives solution (PAS) improves storage conditions so as to give increased shelf life to platelets and to maintain hemostatic function. OBJECTIVE: The present study was aimed to compare in vitro quality of platelet rich plasma (PRP)-derived platelet concentrate (PC) during extended period of storage in plasma and in additive solution (Composol PS and Fresenius). STUDY DESIGN: Randomized 19 PCs each were used in the study for plasma and PAS as the storage medium...
January 2016: Asian Journal of Transfusion Science
Nurhidayatul Asma Mohamad, Shuhaimi Mustafa, Aly Farag El Sheikha, Nur Fadhilah Khairil Mokhtar, Amin Ismail, Md Eaqub Ali
BACKGROUND: Poor quality and quantity of DNA extracted from gelatin and gelatin capsules often causes failure in the determination of animal species using PCR. Gelatin, which is mainly derived from porcine and bovine, has been a matter of concern among customers in order to fulfill religious obligation and safety precaution against several transmissible infectious diseases associated with bovine species. Thus, optimised DNA extraction from gelatin is very important for successful real-time PCR detection of gelatin species...
May 2016: Journal of the Science of Food and Agriculture
Hatem I Mokhtar, Randa A Abdel-Salam, Ghada M Haddad
Robustness of RP-HPLC methods is a crucial method quality attribute which has gained an increasing interest throughout the efforts to apply quality by design concepts in analytical methodology. Improvement to design space modeling approaches to represent method robustness was the goal of many previous works. Modeling of design spaces regarding to method robustness fulfils quality by design essence of ensuring method validity throughout the design space. The current work aimed to describe an improvement to robustness modeling of design spaces in context of RP-HPLC method development for screening of eight antidiabetic drugs...
June 19, 2015: Journal of Chromatography. A
Tom Bond, Nurul Hana Mokhtar Kamal, Thomas Bonnisseau, Michael R Templeton
This study investigated the relative effect of chlorination and chloramination on DBP formation from seven model amine precursor compounds, representative of those commonly found in natural waters, at pH 6, 7 and 8. The quantified DBPs included chloroform, dichloroacetonitrile (DCAN), trichloroacetonitrile (TCAN) and chloropicrin (trichloronitromethane). The aggregate formation (i.e. the mass sum of the formation from the individual precursors) of chloroform, DCAN and TCAN from all precursors was reduced by respectively 75-87%, 66-90% and 89-93% when considering pre-formed monochloramine compared to chlorine...
August 15, 2014: Journal of Hazardous Materials
El-Shanshory Mohamed, Badraia Ibrahim, Donia Amr, El-Kady Noha, Mabrouk Mokhtar
BACKGROUND: Pulmonary hypertension (PHT) may be the leading cause of death in β-thalassemia patients; however, its pathophysiologic mechanisms are still unclear. Recent studies indicate that asymmetric dimethylarginine (ADMA) plays a role in the initiation and progression of a variety of diseases, especially the cardiovascular system. The aim of this study is to assess the levels of ADMA in children with β-thalassemia and their correlations with tricuspid regurgitant jet velocity. PROCEDURES: This study was carried out on 30 children with β-thalassemia major and 30 healthy children served as a control group...
September 2014: Pediatric Blood & Cancer
Elham Radaei, Mohammad Reza Alavi Moghaddam, Mokhtar Arami
BACKGROUND: In this research, response surface methodology (RSM) was applied to optimize Reactive Blue 19 removal by activated carbon from pomegranate residual. A 24 full factorial central composite design (CCD) was applied to evaluate the effects of initial pH, adsorbent dose, initial dye concentration, and contact time on the dye removal efficiency. METHODOLOGY: The activated carbon prepared by 50 wt.% phosphoric acid activation under air condition at 500°C. The range of pH and initial dye concentration were selected in a way that considered a wide range of those variables...
2014: Journal of Environmental Health Science & Engineering
Maryam Yazdani, Hajir Bahrami, Mokhtar Arami
Chitosan/feldspar biobased beads were synthesized, characterized, and tested for the removal of Acid Black 1 dye from aquatic phases. A four-factor central composite design (CCD) accompanied by response surface modeling (RSM) and optimization was used to optimize the dye adsorption by the adsorbent (chitosan/feldspar composite) in 31 different batch experiments. Independent variables of temperature, pH, initial dye concentration, and adsorbent dose were used to change to coded values. To anticipate the responses, a quadratic model was applied...
2014: TheScientificWorldJournal
Amina Habbeche, Boudjema Saoudi, Bassem Jaouadi, Soumaya Haberra, Bilal Kerouaz, Mokhtar Boudelaa, Abdelmalek Badis, Ali Ladjama
An extracellular thermostable keratinase (KERAK-29) was purified and biochemically characterized from a thermophilic actinomycete Actinomadura keratinilytica strain Cpt29 newly isolated from Algerian poultry compost. The isolate exhibited high keratinase production when grown in chicken feather meal media (24,000 U/ml). Based on matrix assisted laser desorption ionization-time of flight mass spectrometry (MALDI-TOF/MS) analysis, the purified enzyme is a monomer with a molecular mass of 29,233.10-Da. The data revealed that the 25 N-terminal residue sequence displayed by KERAK-29 was TQADPPSWGLNNIDRQTAFTKATSI, which showed high homology with those of Streptomyces proteases...
April 2014: Journal of Bioscience and Bioengineering
Mohamed El-Shanshory, Ibrahim Badraia, Amr Donia, Faten Abd El-Hameed, Mokhtar Mabrouk
BACKGROUND: Pulmonary hypertension (PH) is an increasingly recognized life-threatening complication in sickle cell disease (SCD), with associated high mortality in adults. The prevalence of PH in children with SCD is still unknown. The etiology and pathophysiologic mechanisms are still not well understood. AIM OF THE STUDY: To assess the plasma levels of asymmetric dimethylarginine (ADMA) in children with SCD and its correlation with elevated tricuspid regurgitant jet velocity and other hemolytic markers...
July 2013: European Journal of Haematology
Mokhtar Abedini, Masoumeh Sadeghi, Afsoon Emami Naini, Abdolamir Atapour, Jafar Golshahi
Pulmonary arterial hypertension (PAH) is a serious cardiac complication among patients with end-stage renal disease (ESRD). We investigated pulmonary hypertension and its associated factors among patients who were on chronic dialysis and kidney transplant recipients. One hundred-eighty patients in three groups of hemodialysis (HD), peritoneal dialysis (PD), and kidney transplant were studied. Demographic and clinical characteristics and echocardiographic findings were evaluated. A multivariable linear regression model was used to find factors associated with pulmonary artery pressure...
2013: Renal Failure
K Moussaceb, A Ait-Mokhtar, D Merabet
In this work, we investigate, on a laboratory scale, the influence of the leaching conditions on the release of various chemical elements from a cementitious material obtained by solidification of PbO, Ni2O3 and Cr2O3 with blended cement (CEMII-B32.5, according to European Standards). The pH effects on the pollutants release and the composition of the initial pore solution (target elements: chloride, sulfate, sodium, potassium, calcium, lead, chromium and nickel) were assessed through an experimental procedure consisting of two equilibrium leaching tests [the acid neutralization capacity (ANC) and the pore water (PW) tests] and the maximum mobile fraction (MMF) text...
December 2012: Environmental Technology
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