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42篇 您的检索式:作者名="Najwa"
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1Photocatalytic degradation of 4-chlorophenol under P-modified TiO2/UV system: Kinetics, intermediates, phytotoxicity and acute toxicity显示文摘A series of phosphorus-modified titanium dioxide samples with varying P/Ti atomic ratio were conveniently prepared via a conventional solgel route. The effects of phosphorus content and calcination temperature on the crystalline structure, grain growth, surface area, and the photocatalytic activity of P-modified TiO2 were investigated. The XRD results showed that P species slow down the particle growth of anatase and increase the anatase-to-rutile phase transformation temperature to more than 900°C. Kinetic studies on the P-modified TiO2 to degraded 4-chlorophenol had found that the TP5500 prepared by adopting a P/Ti atomic ratio equal to 0.05 and calcined at 500°C had an apparent rate constant equal to 0.0075 min 1, which is superior to the performance of a commercial photocatalyst Degussa P25 Kapp = 0.0045 min 1 and of unmodified TiO2 (TP0500) Kapp = 0.0022 min 1. From HPLC analyses, various hydroxylated intermediates formed during oxidation had been identified, including hydroquinone (HQ), benzoquinone (BQ) and (4CC) 4-chlorocatechol as main products. Phytotoxicity was assessed before and after irradiation against seed germination of tomato (Lycopersicon esculentum) whereas acute toxicity was assessed by using Folsomia candida as the test organism. Intermediates products were all less toxic than 4-chlorophenol and a significant removal of the overall toxicity wasKais Elghniji Olfa Hentati Najwa Mlaik Ayman Mahfoudh Mohamed Ksibi 2012Journal of Environmental Sciences2012,24,3:9
2Role of magnetic resonance imaging in the detection and characterization of solid pancreatic nodules: An update显示文摘Pancreatic ductal adenocarcinoma is the most common malignant tumor of the pancreas. The remaining pancreatic tumors are a diverse group of pancreatic neoplasms that comprises cystic pancreatic neoplasms, endocrine tumors and other uncommon pancreatic tumors. Due to the excellent soft tissue contrast resolution, magnetic resonance imaging(MRI) is frequently able to readily separate cystic from noncystic tumors. Cystic tumors are often easy to diagnose with MRI; however, noncystic non-adenocarcinoma tumors may show a wide spectrum of imaging features, which can potentially mimic ductal adenocarcinoma. MRI is a reliable technique for the characterization of pancreatic lesions. The implementation of novel motionresistant pulse sequences and respiratory gating techniques, as well as the recognized benefits of MR cholangiopancreatography, make MRI a very accurate examination for the evaluation of pancreatic masses. MRI has the distinctive ability of non-invasive assessment of the pancreatic ducts, pancreatic parenchyma, neighbouring soft tissues, and vascular network in one examination. MRI can identify different characteristics of various solid pancreatic lesions, potentially allowing the differentiation of adenocarcinoma from other benign and malignant entities. In this review we describe the MRI protocols and MRI characteristics of various solid pancreatic lesions. Recognition of these characteristics may establish the right diagnosis or at least narrow the differential diagnosis, thus avoiding unnecessary tests or procedures and permitting better management.Najwa Al Ansari Miguel Ramalho Richard C Semelka Valeria Buonocore Silvia Gigli Francesca Maccioni 2015World Journal of Radiology2015,7,11:9
3Incipient sediment motion based on turbulent fluctuations显示文摘The current study modifies the representation of the Shields parameter using turbulent strength,i.e.the root-mean-square(rms) fluid velocity.Experiments were done under a steady,uniform flow using eight sediment sizes with particle Reynolds numbers(Rep) ranging between 1.0(fine sediment) and 183.4(coarse sediment).Utilising the peak rms horizontal(u) values,the critical Shields parameter,θ_c,was calculated and a trend similar to the well-established Shields curve was developed.The analysis was extended to the Shields curve obtained based on the critical shear velocity,Reynolds shear stress,and data extracted fro m the oscillating grid-turbulence experiments.Results show that turbulent fluctuations are crucial for the incipient sediment motion and are essentially better predictors than the commonly used critical shear velocity.A quadrant analysis to identify the role of turbulent bursting events in incipient sediment motion also was done where sweeps and ejections are dominant for finer and coarser sediment sizes,respectively.Wan Hanna Melini Wan Mohtar Ji Wang Lee Najwa Izzaty Mohammad Azha Nian-Sheng Cheng 2020International Journal of Sediment Research2020,35,2:7
4Consensus statement on the epidemiology,diagnosis,prevention,and management of cow's milk protein allergy in the Middle East:a modified Delphi-based study显示文摘Background This study aimed to develop an expert consensus regarding the epidemiology,diagnosis,and management of cow’s milk protein allergy(CMPA)in the Middle East.Methods A three-step modified Delphi method was utilized to develop the consensus.Fifteen specialized pediatricians participated in the development of this consensus.Each statement was considered a consensus if it achieved an agreement level of>80%.Results The experts agreed that the double-blind placebo-controlled oral challenge test(OCT)should be performed for 2-A weeks using an amino acid formula(AAF)in formula-fed infants or children with suspected CMPA.Formula-fed infants with confirmed CMPA should be offered a therapeutic formula.The panel stated that an extensively hydrolyzed formula(eHF)is indicated in the absence of red flag signs.At the same time,the AAF is offered for infants with red flag signs,such as severe anaphylactic reactions.The panel agreed that infants on an eHF with resolved symptoms within 2-4 weeks should continue the eHF with particular attention to the growth and nutritional status.On the other hand,an AAF should be considered for infants with persistent symptoms;the AAF should be continued if the symptoms resolve within 2-4 weeks,with particular attention to the growth and nutritional status.In cases with no symptomatic improvements after the introduction of an AAF.other measures should be followed.The panel developed a management algorithm,which achieved an agreement level of 90.9%.Conclusion This consensus document combined the best available evidence and clinical experience to optimize the management of CMPA in the Middle East.Moustafa A.El-Hodhod Mortada H.F.El-Shabrawi Ahmed AIBadi Ahmed Hussein AM Almehaidib Basil Nasrallah Ebtsam Mohammed AIBassam Hala El Feghali Hasan M.Isa Khaled Al Saraf Maroun Sokhn Mehdi Adeli Najwa Mohammed Mousa Al-Sawi Pierre Hage Suleiman Al-Hammadi 2021World Journal of Pediatrics2021,17,6:3
5Taurine protects against retinal and optic nerve damage induced by endothelin-1 in rats via antioxidant effects显示文摘Endothelin-1(ET-1), a potent vasoconstrictor, is involved in retinal vascular dysregulation and oxidative stress in glaucomatous eyes. Taurine(TAU), a naturally occurring free amino acid, is known for its neuroprotective and antioxidant properties. Hence, we evaluated its neuroprotective properties against ET-1 induced retinal and optic nerve damage. ET-1 was administered intravitreally to Sprague-Dawley rats and TAU was injected as pre-, co-or post-treatment. Animals were euthanized seven days post TAU injection. Retinae and optic nerve were examined for morphology, and were also processed for caspase-3 immunostaining. Retinal redox status was estimated by measuring retinal superoxide dismutase, catalase, glutathione, and malondialdehyde levels using enzyme-linked immuosorbent assay. Histopathological examination showed significantly improved retinal and optic nerve morphology in TAU-treated groups. Morphometric examination showed that TAU pre-treatment provided marked protection against ET-1 induced damage to retina and optic nerve. In accordance with the morphological observations, immunostaining for caspase showed a significantly lesser number of apoptotic retinal cells in the TAU pre-treatment group. The retinal oxidative stress was reduced in all TAU-treated groups, and particularly in the pre-treatment group. The findings suggest that treatment with TAU, particularly pre-treatment, prevents apoptosis of retinal cells induced by ET-1 and hence prevents the changes in the morphology of retina and optic nerve. The protective effect of TAU against ET-1 induced retinal and optic nerve damage is associated with reduced retinal oxidative stress.Natasha Najwa Nor Arfuzir Renu Agarwal Igor Iezhitsa Puneet Agarwal Sabrilhakim Sidek Nafeeza Mohd Ismail 2018Neural Regeneration Research2018,13,11:3
6The association between the interleukin-10 cytokine and CC chemokine ligand 5 polymorphisms and mycetoma granuloma formation显示文摘Najwa A. Mhmoud Ahmed H. Fahal Wendy W. J. van de Sande 2013Medical Mycology2013,,5:2
7Immunoneutraliza- tion of vascular endothelial growth factor inhibits pregnancy es- tablishmenl in the rhesus monkey (Macaca mulatta) 显示文摘Sengupta J Lalitkumar PG Najwa AR 2007Re- production2007,133,6:1
8Determination of inorganic nitrate in serum and urine by a kinetic cadmium-reduction method显示文摘Najwa KC Nabil WW 1990Clin Chem1990,36,8:1
9Budesonide Nebulization Added to Systemic Prednisolone in the Treatment of Acute Asthma in Children显示文摘Abdullah A. Alangari Nidal Malhis Mohamed Mubasher Najwa Al-Ghamedi Mohamad Al-Tannir Muhammad Riaz Dale T. Umetsu Saleh Al-Tamimi 2014Chest2014,,4:1
10IGF2,IGF binding protein1,and matrix metalloproteinases 2and 9in implantation-stage endometrium following immunoneutralization of vascular endothelial growth factor in the rhesus monkey显示文摘Ghosh D Najwa AR Khan MA 2011Reproduction2011,141,:1
11Monoclonal anti-leukemia inhibitory factor antibody inhibits blastocyst implantation in the rhesus monkey显示文摘Sengupta J Lalitkumar PG Najwa AR 2006Contraception2006,74,5:1
12IGF2, IGF binding protein 1, and matrix metalloproteinases 2 and 9 in implantation-stage endometrium following immunoneutralization of vascular endothelial growth factor in the rhesus monkey 显示文摘Ghosh D Najwa AR Khan MA et at 2011Reproduction2011,141,4:1
13A mixed acid methodology to produce thermally stable cellulose nanocrystal at high yield using phosphoric acid显示文摘Cellulose nanocrystal(CNC)with distinctive shape-morphology,enhanced thermal stability and dispersibility is essential for overcoming the challenges in processing polymer/CNC nanocom-posites through melt compounding at elevated temperatures.This study shows a mixed acid hy-drolysis method to produce CNC with improved thermal stability and high productivity.The use of phosphoric acid(H_(3)PO_(4)),as a mild acid,in combination with a strong acid either sulphuric acid(H_(2)SO_(4))or hydrochloric acid(HCl)leads to reduced use of strong acids and low impact on our environment.The influences of acid combination and sequence of addition on the production yield were investigated by retaining the proportion of H_(3)PO_(4)to corrosive acid(H_(2)SO_(4)and HCl)4 to 1,and solid to liquid ratio 1꞉75.This methodology has enabled to isolate CNC with higher thermal stability,dispersibility and productivity in terms of amount acid used 1 g of CNC,as compared with single acid hydrolysis.The CNC produced using the combination of H_(3)PO_(4)and HCl exhibits high thermal stability,dispersibility and rod-like shape morphology with length and width of(424±86)and(22±3)nm,respectively.Moreover,this approach has reduced H_(3)PO_(4)consumption by 54%as compared with single acid hydrolysis method for the production of same amount of CNC.Khairatun Najwa Mohd Amin Alireza Hosseinmardi Darren J.Martin Pratheep K.Annamalai 2022Journal of Bioresources and Bioproducts2022,7,2:1
14Data Structures in Multi-Objective Evolutionary Algorithms显示文摘Data structures used for an algorithm can have a great impact on its performance,particularly for the solution of large and complex problems,such as multi-objective optimization problems(MOPs).Multi-objective evolutionary algorithms(MOEAs) are considered an attractive approach for solving MOPs,since they are able to explore several parts of the Pareto front simultaneously.The data structures for storing and updating populations and non-dominated solutions(archives) may affect the efficiency of the search process.This article describes data structures used in MOEAs for realizing populations and archives in a comparative way,emphasizing their computational requirements and general applicability reported in the original work.Najwa Altwaijry Mohamed El Bachir Menai 2012Journal of Computer Science & Technology2012,27,6:1
15Monoclonal anti- leukemia inhibitory factor antibody inhibits blastocyst implantation in the rhesus monkey显示文摘Sengupta J Lalitkumar PG Najwa AR 2006Contraception2006,74,5:1
16Characteristics of henol and chlorinated phenols sorption onto surfactant-modified bentonite显示文摘Zahir Rawajfih Najwa Nsour 2006Journal of Colloid and Interface Science2006,298,:1
17Chitin and chitosan extracted from shrimp waste using fish proteases aided process:Efficiency of chitosan in the treatment of unhairing effluents显示文摘Assaa^d Sila Najwa Mlaik Nadhem Sayari Rafik Balt 2014J Polym Environ2014,22,:1
18Monoclonal anti-leukemia inhibitory factor antibody inhibits blastocyst implantation in the rhesus monkey显示文摘Sengupta J Lalitkumar PG Najwa AR 2006Contraception2006,74,:1
19On detecting edges 显示文摘NAJWA V S 1998IEEE Transactions on Pattern Analysis and Matching Intelligence1998,8,6:1
20Increased Neurotrophin Production in a Penicillium chrysogenum-Induced Allergic Asthma Model in Mice显示文摘Yong Joo Chung Aimen Farraj Najwa Haykal Coates Stephen H. Gavett Marsha D. W. Ward 2007Journal of Toxicology and Environmental Health, Part A2007,,:1
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