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89篇 您的检索式:作者名="Latifa"
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1TiO_2 nanotubes as solid-phase extraction adsorbent for the determination of polycyclic aromatic hydrocarbons in environmental water samples显示文摘An analytical method based on TiO 2 nanotubes solid-phase extraction (SPE) combined with gas chromatography (GC) was established for the analysis of seven polycyclic aromatic hydrocarbons (PAHs): acenaphtylene, acenaphthene, anthracene, fluorene, phenanthrene, fluoranthene and pyrene. Factors affecting the extraction efficiency including the eluent type and its volume, adsorbent amount, sample volume, sample pH and sample flow rate were optimized. The characteristic data of analytical performance were determined to investigate the sensitivity and precision of the method. Under the optimized extraction conditions, the method showed good linearity in the range of 0.01-0.8 μg/mL, repeatability of the extraction (RSD were between 6.7% and 13.5%, n = 5) and satisfactory detection limits (0.017-0.059 ng/mL). The developed method was successfully applied to the analysis of surface water (tap, river and dam) samples. The recoveries of PAHs spiked in environmental water samples ranged from 90% to 100%. All the results indicated the potential application of titanate nanotubes as solid-phase extraction adsorbents to pre-treat water samples.Bochra Bejaoui Kefi Latifa Latrous El Atrache Hafedh Kochkar Abdelhamid Ghorbel 2011Journal of Environmental Sciences2011,23,5:10
2Purification and Characterization of Cytosolic Glyceraldehyde-3-phosphate Dehydrogenase from the Dromedary Camel显示文摘Glyceraldehyde-3-phosphate (GAPDH )(EC 1.2.1.12 ) ,关键酵素文件结束碳新陈代谢,从 Camelusdromedarius.The 的骨胳的肌肉被净化并且描绘到同质蛋白质被净化由常规硫酸铵分别的约 26.8 褶层由蓝 Sepharose CL-6B 层析列在后面,并且它的物理、运动的性质被调查。本国的蛋白质是有集中显示出的分析的约 146 kDa.Isoelectric 的明显的分子的重量的 homotetramer 一仅仅 GAPDH isoformwith 的存在 7.2 的一个等电点。净化的酶的最佳 pH 是 7.8。在酶活动的温度的效果上的研究与为NAD+和 DL-glyceraldehyde-3-phophatewere 的明显的 K_m 价值估计了是 0.025+-0.040 公里和 0.21+0.08 公里的 4.9 kcal/mol.The 的激活精力揭示了近似 28-32 °C 的最佳的价值,净化的蛋白质的 respectively.The V_(最大)被估计是 52.7+-5.9 U/mg.These 运动参数价值以前与 thosed escribed 不同,种类之间的思考蛋白质差别。Latifa FOURRAT Abdelghani IDDAR Abdelaziz SOUKRI 2007Acta Biochimica et Biophysica Sinica2007,39,2:6
3Valorization of mining waste and tailings through paste backfilling solution, Imiter operation, Morocco显示文摘Mine waste and process tailings storage is one of important challenge for which mining operations are increasingly confronted. Treatment discharges of plants and main part of waste rock development are generally stored on surface areas. The volume and chemical characteristics of these materials generate serious problem for required storage spaces and mainly environmental degradation. Paste backfill(PBF) is one of ingenious solutions to minimize the quantity of tailings to store. PBF is basically defined as a combination of mine processing tailings, binder, and water mixing. The purpose of this paper is to present backfilling components characterization and formula verification for a waste valorization solution through paste backfilling technology in Imiter operation. Obtained results and realized analysis demonstrate PBF conformity and adequacy with assigned underground functions. However the studied recipe can be more ameliorated to obtain an optimal mixture ensuring the required mechanical strength.Khaldoun Abdelhadi Ouadif Latifa Baba Khadija Bahi Lahcen 2016International Journal of Mining Science and Technology2016,26,3:6
4Wnt signaling and Loxl2 promote aggressive osteosarcoma显示文摘Osteosarcoma(OS)is the most frequent primary malignant bone tumor in urgent need of better therapies.Using genetically modified mouse models(GEMMs),we demonstrate that Wnt signaling promotes c-Fos-induced OS formation via the actions of the collagen-modifying enzyme Loxl2.c-Fos/AP-1 directly regulates the expression of the Wnt ligands Wnt7b and Wnt9a in OS cells through promoter binding,and Wnt7b and Wnt9a in turn promote Loxl2 expression in murine and human OS cells through the transcription factors Zeb1 and Zeb2.Concordantly,inhibition of Wnt ligand secretion by inactivating the Wnt-less(Wls)gene in osteoblasts in c-Fos GEMMs either early or in a therapeutic setting reduces Loxl2 expression and progression of OS.Wls-deficient osteosarcomas proliferate less,are less mineralized and are enriched in fibroblastic cells surrounded by collagen fibers.Importantly,Loxl2 inhibition using either the pan-Lox inhibitor BAPN or a specific inducible shRNA reduces OS cell proliferation in vitro and decreases tumor growth and lung colonization in murine and human orthotopic OS transplantation models.Finally,OS development is delayed in c-Fos GEMMs treated with BAPN or with specific Loxl2 blocking antibodies.Congruently,a strong correlation between c-FOS,LOXL2 and WNT7B/WNT9A expression is observed in human OS samples,and c-FOS/LOXL2 co-expression correlates with OS aggressiveness and decreased patient survival.Therefore,therapeutic targeting of Wnt and/or Loxl2 should be considered to potentiate the inadequate current treatments for pediatric,recurrent,and metastatic OS.Kazuhiko Matsuoka Latifa Bakiri Lena I.Wolff Markus Linder Amanda Mikels-Vigdal Ana Patiño-García Fernando Lecanda Christine Hartmann Maria Sibilia Erwin F.Wagner 2020Cell Research2020,30,10:5
5Improvement in corrosion resistance of magnesium coating with cerium treatment显示文摘Corrosion protection afforded by a magnesium coating treated in cerium salt solution on steel substrate was investigated using open circuit potential, polarization curves, and electrochemical impedance spectroscopy (EIS) in 0.005 M sodium chloride solution (NaCl). The morphology of the surface was characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and X-ray diffraction (XRD). The cerium treated coating was obtained by immersion in CeCl3 solution. The results showed that the corrosion resistance of the treated magnesium coating was improved. The corrosion potential of the treated coating was found to be nobler than that of the untreated magnesium coating and the corrosion current decreased significantly. Impedance results showed that the cerium treatment increased corrosion protection. The improvement of anti-corrosion properties was attributed to the formation of cerium oxides and hydroxides that gave rise to a physical barrier effect.Samia Ben Hassen Latifa Bousselmi Patrice Berot El Mustafa Rezrazi Ezzeddine Triki 2009Rare Metals2009,28,3:5
6微生物对肉鸭肝脏及肌肉中黄曲霉毒素B_1残留的影响显示文摘试验旨在探讨微生物对肉鸭肝脏、肌肉组织中黄曲霉毒素B1(aflatoxinB1,AFB,)残留的影响?选用健康、体重相近的1日龄樱桃谷肉鸭192只(雌、雄混养),适应环境1周后,随机分为6个处理组,每组4个重复,每个重复8只,分笼饲养,自由采食和饮水6个组即对照组、污染组、处理1组、处理2组、处理3组、处理4组,分别饲喂基础日粮、霉变日粮、霉变日粮+0.05%枯草芽孢杆菌、霉变日粮+0.05%地衣芽孢杆菌、霉变日粮+0.05%酵母茵、霉变日粮+0.02%粪链球菌。试验分为2个阶段(2~4周龄,5~7周龄),共42d。结果表明,日粮中低剂量AFB1可在肉鸭肝脏、肌肉组织中残留,肝脏和肌肉中残留量分别为(0.16±0.027)ng/g和(0.022±0.009)ng/g,而其它的处理组均未检出j结果表明,在肉鸭日粮中添加微生物制剂可以有效降低AFB1在肝脏、肌肉组织中的残留,宋文静 Latifa Rizka Fidaroin 齐德生 张妮娅 2013饲料工业2013,34,8:5
7Systematic review and meta-analysis on the association of tuberculosis in Crohn's disease patients treated with tumor necrosis factor-α inhibitors(Anti-TNFα)显示文摘AIM To perform a meta-analysis on the risk of developing Mycobacterium tuberculosis(TB) infection in Crohn's disease(CD) patients treated with tumor necrosis factoralpha(TNFα) inhibitors.METHODS A meta-analysis of randomized, double-blind, placebocontrolled trials of TNFα inhibitors for treatment of CD in adults was conducted. Arcsine transformation of TB incidence was performed to estimate risk difference. A novel epidemiologically-based correction(EBC) enabling inclusions of studies reporting no TB infection cases in placebo and treatment groups was developed to estimate relative odds.RESULTS Twenty-three clinical trial studies were identified, including 5669 patients. Six TB infection cases were reported across 5 studies, all from patients receiving TNFα inhibitors. Eighteen studies reported no TB infection cases in placebo and TNFα inhibitor treatment arms. TB infection risk was significantly increased among patients receiving TNFα inhibitors, with a risk difference of 0.028(95%CI: 0.0011-0.055). The odds ratio was 4.85(95%CI: 1.02-22.99) with EBC and 5.85(95%CI: 1.13-30.38) without EBC.CONCLUSION The risk of TB infection is higher among CD patients receiving TNFα inhibitors. Understanding the immunopathogenesis of CD is crucial, since using TNFα inhibitors in these patients could favor mycobacterial infections, particularly Mycobacterium avium subspecies paratuberculosis, which ultimately could worsen their clinical condition.Brent L Cao Ahmad Qasem Robert C Sharp Latifa S Abdelli Saleh A Naser 2018World Journal of Gastroenterology2018,24,25:4
8Mouse models for liver cancer显示文摘Latifa Bakiri Erwin F. Wagner 2013Molecular Oncology2013,,:2
9Semi-continuous casting of magnesium alloy AZ91 using a filtered melt delivery system显示文摘A 3-D numerical simulation of an industrial-sized slab caster for magnesium alloy AZ91 has been carried out for the steady state operational phase of the caster.The simulated model consists of an open-top melt delivery system fitted with a porous filter near the hot-top.The melt flow through the porous filter was modeled on the basis of Brinkmann-Forchimier-Extended non-Darcy model for turbulent flow.An in-house 3-D CFD code was modified to account for the melt flow through the porous filter.Results are obtained for four casting speeds namely,40,60,80,and 100 mm/min.The metal-mold contact region as well as the convective heat transfer coefficient at the mold wall were also varied.In addition to the above,the Darcy number for the porous media was also changed.All parametric studies were performed for a fixed inlet melt superheat of 64℃.The results are presented pictorially in the form of temperature and velocity fields.The sump depth,mushy region thickness,solid shell thickness at the exit of the mold and axial temperature profiles are also presented and correlated with the casting speed through regression analysis.©2015 Production and hosting by Elsevier B.V.on behalf of Chongqing University.Mainul Hasan Latifa Begum 2015Journal of Magnesium and Alloys2015,3,4:2
10Immunoaffinity purification and characterization of glyceraldehyde-3-phosphate dehydrogenase from human erythrocytes显示文摘利用 immunoaffinity 列层析的一个新过程被用于 glyceraldehyde-3-phosphate 脱氢酶的纯化(GAPDH, EC 1.2.1.12 ) 从人的红血球。在这个快速的方法(一个步骤) 和包括铵硫酸盐分别的传统的过程之间的比较由新方法在一短时间与最高的收益给一项最高特定的活动的蓝 Sepharose CL-6B 层析表演列在后面。净化的 GAPDH 的描述表明本国的酶是有为菸碱腺嘌 dinucleotide (NAD+) 的氧化形式的绝对特性的 150 kDa 的 homotetramer。用抗体对净化的 GAPDH 提起了的净化的 monospecific polyclonal 的西方的污点分析给一个单身者看了相应于酶子单元的 36 kDa 乐队。在酶活动的温度和 pH 的效果上的研究揭示了大约 43 的最佳的价值 ? 敦瑥吗?Driss Mountassif Tarik Baibai Latifa Fourrat Adnane Moutaouakkil Abdelghani Iddar M'Hammed Said El Kebbaj Abdelaziz S oukri 2009Acta Biochimica et Biophysica Sinica2009,41,5:2
11Assessment of renal insufficiency in gestational proteinuric hypertension in third trimester pregnancy显示文摘Khatun A Latifa S Shahla K 2003Bangladesh Med Res Counc Bull2003,29,3:1
12The callipyge mutation enhances the expression of coregulated imprinted genes in cis without affecting their imprinting status显示文摘Carole C Karin S Latifa K 2001Nature Genetics2001,27,:1
13RANKL/OPG in primary cultures of osteoblasts from post-menopausal women. Differences between osteoporotic hip fractures and osteoarthritis显示文摘Mercè Giner M a José Rios M a José Montoya M a Angeles Vázquez Latifa Naji Ramón Pérez-Cano 2008Journal of Steroid Biochemistry and Molecular Biology2008,,1:1
14Water treatment for color and COD removal by electrochemical oxidation on boron-doped diamond anode显示文摘Hanene Akrout Latifa Bousselmi 2013Arab JGeosci2013,6,:1
15Corrosion behaviour of Cu-10Sn bronze in aerated NaCl aqueous media-Electrochemical investigation 显示文摘Nebil Souissi Emmanuel Sidot Latifa Bousselmi 2007Corrosion Science2007,,49:1
16Fine structure and functional comments of mouthparts in Platypus cylindrus (Col., Curculionidae: Platypodinae)显示文摘Latifa Belhoucine Rachid T. Bouhraoua Eva Prats Juli Pulade-Villar 2012Micron2012,,:1
17A comparative study between laparoscopically assisted vaginal hysterectomy and total abdominal hysterectomy in patients with type2 diabetes显示文摘Jahan Samsad Akter Latifa Baki A 2009Journal of Gynecologic Surgery2009,25,4:1
18Surface Activities, Foam Properties, HLB, and Krafft Point of Some n-Alkanesulfonates (C14–C18) with Different Isomeric Distributions显示文摘Latifa Fekarcha Amel Tazerouti 2012Journal of Surfactants and Detergents2012,,4:1
19The Effect of Structural Empowerment on Psychological Empowerment in Private Health Care in Biskra, Algeria显示文摘Bomi Latifa 2017Economics World2017,5,2:1
20Amino acid composition,antinutrients and allergens in the peanut protein fraction obtained by an aqueous enzymatic process显示文摘S Latifa J Pfannstiel Makkar H P S 0,,01:1
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