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Low dimensional Ni-ZnO nanoparticles as marker of toxic lead ions for environmental remediation
Mohammed M. Rahman,Sher Bahadar Khan,Hadi M. Marwani,Abdullah M. Asiri,Khalid A. Alamry,Malik Abdul Rub,Anish Khan,Aftab Aslam Parwaz Khan,Abdullah H. Qusti 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.3
We have synthesized Ni-ZnO nanoparticles (NPs) by a wet-chemical route using reducing agents. Thestructural and optical properties of Ni-ZnO NPs were investigated by various conventional methods. Theanalytical potential of the Ni-ZnO NPs was studied for a selective detection of toxic Pb(II) ion usingrecognized ICP-OES method for environmental remediation. Data obtained from the selectivity studyindicated that the selectivity of Ni-ZnO NPs phase was the most toward Pb(II) ion. However, theadsorption isotherm data of Pb(II) on Ni-ZnO NPs phase was good-match with the Langmuir-Adsorption-Isotherm, strongly supporting that the adsorption process was mainly monolayer on homogeneousadsorbent surfaces.
Mohammed M. Rahman,Sher Bahadar Khan,Hadi M. Marwani,Abdullah M. Asiri,Khalid A. Alamry,Malik Abdul Rub,Anish Khan,Aftab Aslam Parwaz Khan,Naved Azum 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.4
In this report, the doped ZnO-CdO nanoblocks (NBs) have been synthesized by facile wet-chemical technique at low-temperature and characterized by UV–vis, FT-IR, XRD, FESEM, XPS, XEDS, etc. The NBs were applied for the selective detection of Fe(III) ions and photo-catalytic degradation using Brilliant cresol blue (BCB). The analytical efficiency of NBs phase was also investigated for a selective detection of Fe(III) by ICP-OES. NBs were found to be the most selective toward Fe(III), where adsorption process was mainly monolayer on a homogeneous adsorbent surface. In photo-catalysis, almost 52.3% degradation with BCB dye was observed under solar sources with NBs.
Aftab Aslam Parwaz Khan,Abdullah M. Asiri,Anish Khan,Naved Azum,Malik Abdul Rub,Mohammed M. Rahman,Sher Bahadar Khan,K. S. Siddiqi,Khalid A. Alamry 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.2
The reactions of Cefuroxime (CFA) by hexacyanoferrate (III) (HCF(III)) in alkaline medium at a constant ionic strength has been studied spectrophotometrically. It is a first order reaction, but fractional order in both CFA and alkali. Decrease in dielectric constant of the medium decreases the rate of reaction. The effect of added products and ionic strength has also been investigated. A mechanism involving free radicals is proposed. In a composite equilibrium step, CFA binds to HCF(III) to form a complex that subsequently decomposes to the products. The main two products were separated and identified by column chromatography, TLC and FT-IR. There is good agreement between the observed and calculated rate constants under different experimental conditions. The reaction was studied at different temperatures and activation parameters were computed with respect to the slow step of the proposed mechanism.
Mohammed Nabil A.,Afzal Muhammad,Al-Faifi Sulieman A.,Khan Muhammad A.,Refay Yahya A.,AL-Samin Bazel H.,Alghamdi Salem S.,Ibrahim Abdullah 한국식물생명공학회 2023 Plant biotechnology reports Vol.17 No.4
Lentil is an important annual food legume crop, nitrogen fixer and provides a substantial amount of protein, carbohydrate, minerals, and vitamin content. The use of molecular markers to assess genetic diversity is crucial for crop improvement, efficient management, and conservation of plant genetic resources. The current study aimed to determine the genetic diversity among lentil genotypes using sequence-related amplified polymorphism (SRAP) markers. Therefore, we evaluated a collection of 36 lentil genotypes, including 20 from Yemen, Saudi Arabia (7), Egypt (4), and Bangladesh (3), and (2) genotypes from the International Center for Research in Dry Area (ICARDA) using 21 SRAP primer combinations. The amplified fragments showed a high level of useful polymorphic amplified fragments (775 out of 782) indicating a higher degree of variation. The polymorphic information content (PIC) ranged from 0.31 to 0.39 with an average of 0.33 for each primer. The UPGMA trees, based on Jaccard similarity index matrices, separated the genotypes into four main clusters according to their geographical origin. The population structure supported the major groups and attested to their great degree of differentiation. The highest lentil population was found at K = 3, K = 5, and K = 7 levels, showing purity and admixture ancestry among the lentil population. This study highlighted the wide genetic diversity among the studied lentil genotypes and demonstrated the effectiveness of the SRAP technique in determining the genetic variability of lentil. Furthermore, it could be used to establish the genetic peculiarity of ecotypes when applying for the obtainment of origin and agro-morphological characteristics.
Alanazi, Mohammed,Pathan, Akbar Ali Khan,Shaik, Jilani P.,Al Amri, Abdullah,Parine, Narasimha Reddy Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.5
Background: Genetic aberrations of DNA repair enzymes are known to be common events associated with different cancer entities. The aim of the present study was to analyze genetic associations of rs1805404 (Asp81Asp) and rs1805414 (Ala284Ala) in the PARP1 gene with the risk of breast cancer in Saudi Arabia. Materials and Methods: These two SNP's were analyzed in a primary study group of breast cancer patients and healthy control subjects. Genotypes were determined by TaqMan SNP testing and analyzed using Chi-square or t test and logistic regression analysis with SPSS16.0 software. Results and Conclusions: Results showed that rs1805414 was associated with a significantly increased susceptibility to breast cancer, significant risk being observed for the TC, CC and TC+CC genotypes. In conclusion PARP1 rs1805414 SNP polymorphisms may be involved in the etiology of breast cancer in the Saudi population. In contrast, PARP1 rs1805404 did not show any significant association in overall in breast cancer samples when compared to healthy controls. Confirmation of our findings in larger populations of different ethnicities may provide evidence for a role of the PARP1 gene in breast carcinoma developnment.
Monitoring of acrylamide carcinogen in selected heat-treated foods from Saudi Arabia
Mohammad Rizwan Khan,Zeid Abdullah ALOthman,Mu. Naushad,Ahmed Khodran Alomary,Sulaiman Mohammed Alfadul 한국식품과학회 2018 Food Science and Biotechnology Vol.27 No.4
The present study reports the outcomes of assessment on acrylamide levels in selected heat-treated foods of diverse brands and origins from Saudi Arabia. In chips, acrylamide level was detected from 28 to 954 lg/kg, sample 7 (salted) contained higher amount (954 lg/kg) whereas, sample 8 (labneh and mint) comparatively produced lower amount (28 lg/kg). Nuts and dried fruits have generated acrylamide from 2 to 93 lg/kg, salted peanut of Indian origin produced higher amount (93 lg/kg) while apricot (plain) relatively generated lower amount (2 lg/ kg). The levels of acrylamide in biscuits, pastry, cacao, chocolate, olive, cheese, corn, oat and wheat flakes, and bread were found from 26 to 234 lg/kg. Biscuits generated high concentration (234 lg/kg) while corn flakes fairly generated lower amount (26 lg/kg). The obtained results have shown a great variation of acrylamide content and reason might be due to foods type, cooking ingredients and, cooking methods, time and temperature.
Malik Abdul Rub,Abdullah M. Asiri,Naved Azum,Anish Khan,Aftab Aslam Parwaz Khan,Sher Bahadar Khan,Mohammed M. Rahman,Kabir-ud-Din 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.6
Herein we report the micellization and cloud point of an amitriptyline hydrochloride (AMT) under the influence of cationic, anionic and nonionic hydrotropes. Anionic hydrotropes were employed to know the micellar and surface behaviors, besides studying the clouding behavior of AMT drug with cationic,anionic and nonionic hydrotropes. Tensiometric study has been performed and the properties studied include the critical micelle concentration (cmc), maximum surface excess at the air/water interface (Gmax), the minimum area per of amphiphilic molecule at air/water interface (Amin), and the different thermodynamic parameters, besides clouding phenomenon. Interaction parameters of micelles (bm) and monolayer (bs) indicate that drug-hydrotrope systems show better interaction at the interface than in micelles.
Muhammad Arif,Abdur Rehman,Mohamed E. Abd El-Hack,Muhammad Saeed,Fateh Khan,Muhammad Akhtar,Ayman A. Swelum,Islam M. Saadeldin,Abdullah N. Alowaimer 아세아·태평양축산학회 2018 Animal Bioscience Vol.31 No.12
Objective: The present study attempted to determine safe and sufficient growth promoters in poultry feeding. Methods: A total of 520 seven-day-old quail chicks were randomly allotted to eight treatment groups in a 4×2 factorial design experiment to evaluate the effect of different levels of humic acid (HA) and black cumin (BC) seed and their interactions on growth, carcass traits, gut microbes, and blood chemistry of growing quails. Quails were randomly distributed into 8 groups in a 4×2 factorial design, included 4 HA levels (0, 0.75, 1.5, and 2.25 g/kg diet) and 2 BC levels (0 or 5 g/ kg diet). Results: Increasing HA level associated with a gradual increase in final weight, feed intake and body weight gain along with an improvement in feed conversion ratio. Dietary addition of 5 g BC powder/kg diet gave similar results. The highest level of HA (2.25 g/kg diet) recorded the best values of carcass weight, breast yield, intestinal length, and intestinal weight comparing with the control and other HA levels. Total viable microbial counts decreased (p<0.05) with increasing levels of HA except the intermediate level (1.5 g/kg diet). The concentration of serum cholesterol and low density lipoprotein (excluding that 0.75 g HA) decreased (p<0.05) and high density lipoprotein increased (p = 0.034) along with increasing HA level. The interaction between the 2.25 g HA×5 g gave the best results regarding most studied parameters. Conclusion: These findings indicated that HA combined with BC could be used as effective growth promoters, with the recommended level being 2.25 g HA+5 g BC/kg of quail diet.
Md. Anamul Hoque,Shamim Mahbub,Malik Abdul Rub,Shahed Rana,Mohammed Abdullah Khan 한국화학공학회 2018 Korean Journal of Chemical Engineering Vol.35 No.11
Mixed micelle formation behavior of cationic surfactant-cetyltrimethylammonium bromide (CTAB) and anionic surfactant sodium dodecyl sulfate (SDS) in aqueous as well as in urea medium from 303.15K to 323.15K at 5K interval was carried out by conductometric method. The differences between the experimental values of critical micelle concentrations (cmc) and ideal critical micelle concentrations (cmcid) illustrate the interaction between the amphiphiles studied. The values of micellar mole fraction (X1Rub (Rubingh), X1 M (Motomura), X1Rod (Rodenas) and X1 id (ideal) of surfactant CTAB determined by different proposed models and outcome indicate high involvement of CTAB in SDS-CTAB mixed micellization, which enhance by means of the augment of mole fraction of CTAB. The negative value of interaction parameter ( ) showed an attractive interaction involving CTAB and SDS. Activity coefficients were less than unity in all case, which also reveals the presence of interaction between CTAB & SDS. The negative G0 m values imply the spontaneous mixed micellization phenomenon. The attained values of H0 m were positive at inferior temperature, while negative at superior temperature. The negative H0 m values in urea (NH 2CONH2) medium illustrate exothermic micellization process. The magnitudes of S0 m were positive in almost all cases. The excess free energy of mixed micelle formation (Gex) was found to be negative, which indicates the stability of mixed micelle as compared to the individual’s components micelles.