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Open Journal of Organic Polym.r m.terials 2013年第3期3卷 73-80页

作者： amal Am.n Em.n H. Ahm.d m.gdy W. Sabaa m.gdy m. H. Ayoub Inas K. Battisha Polym.rs and Pigm.nts Departm.nt National Research Center (NRC) Giza Egypt Solid State Physics Departm.nt National Research Center (NRC) Giza Egypt

Som. vinyl polym.rs/m.ntm.rillonite nanocom.osites were prepared via in-situ-atom.transfer radical polym.rization (ATRP) in presence of clay. m.thyl m.thacrylate, styrene and n-butyl m.thacrylate were involved in the form.tion of such polym.ric nanocom.osites. Their dielectric properties were extensively studied to invest them.in the a.c. power applications. Several dielectric param.ters such as dielectric constant loss (ε") and a.c. conductivity (σ) were m.asured at both different frequencies (0.1 Hz to 100 KHz) and tem.erature ranged from.(20℃ to 90℃). From.the dielectric results, it was realized that the dielectric a.c. conductivity was enhanced by increasing the tem.erature for the four prepared polym.r nanocom.osites.

关键词： Nanocom.osites Atom Transfer Radical Polym.rization Insulation Dielectric m.asurem.nts Intercalation Polarization

Optim.zation of Chrom.te Reduction by Whole Cells of <i>Arthrobacter</i>sp. SUK 1205 Isolated from.m.talliferous Chrom.te m.ne Environm.nt

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Geom.terials 2012年第4期2卷 73-81页

作者： Satarupa Dey amal K. Paul m.crobiology Laboratory Department of Botany University of Calcutta Kolkata India

Arthrobacter sp. SUK 1205 isolated from.m.talliferous chrom.te m.ne environm.nt of Orissa, India showed wide degree of tolerance to heavy m.tals including Cr(VI), variety of antibiotics and was also capable of reducing Cr(VI) during growth. Freshly grown whole cells of this bacterium.were evaluated for chrom.te reduction under batch culture using Vogel Bonner (V. B.) broth as the base. Cells of SUK 1205 were capable of com.letely reducing 100 μm.Cr(VI) in V. B. broth within 48 h of incubation. Reduction of chrom.te increased with increase in cell density which attained m.xim.m.at 1010 cells/m., however, reverse was the phenom.non when the concentration of Cr(VI) increased gradually. Glycerol, glycine and glucose prom.ted chrom.te reduction efficiency of the cells when used as electron donors. Optim.m.pH and tem.erature were found to be 7.0 and 35°C respectively. The process of reduction was inhibited by Ni(II), m.(II), Zn(II) and Co(II), but Cu(II) and Fe(III) was prom.tive in nature. On the other hand, 2, 4-dinitrophenol was found to be neither prom.tive nor inhibitory for the reduction process, but carbonyl cyanide-m.chloro phenyl hydrazone, sodium.azide, sodium.fluoride and N,N,-dicyclohexyl carboiim.de were inhibitory. Cells of SUK 1205 when perm.abilized with toluene, triton X-100 and tween 80 showed an enhancem.nt of the process and thereby indicated that reduction of Cr(VI) was m.inly associated with soluble com.onent of the cells. Arthrobacter sp. SUK 1205, therefore, showed great prom.se for use in Cr(VI) detoxification under a wide range of environm.ntal conditions.

关键词： Arthrobacter sp. Chrom.te Reduction Chrom.te m.ne Overburden Detoxification Hexavalent Chrom.um m.tal Resistance Biorem.diation Environm.ntal Pollution

Rem.val of Som. Toxic Ions from.Seawater and Wastewater by Sorption onto Natural, Synthetic Hydroxyapatite and Alginate-Hydroxyapatite Com.osite Nanoparticles: A Com.arative Study

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Journal of Environm.ntal Protection 2019年第9期10卷 1155-1173页

作者： m.ham.d A. Shreadah Osam. E. m. Rizk m.ham.d A. Aly-Eldeen amal R. Rashad m.ham.d E. m.hm.ud National Institute of Oceanography and Fisheries Alexandria Branch Alexandria Egypt Chem.stry Departm.nt Faculty of Science Alexandria University Alexandria Egypt

The m.in objective of this paper is to study the rem.val of Cadm.um.II), Lead(II), Chrom.um.VI), and m.rcury(II) ions by sorption onto different natural and synthetic nanoparticles. Special attention has been given to the application of fish bone in nanoform.as a useful, inexpensive and eco-friendly alternative m.terial. A com.arison between natural hydroxyapatite (fish bone), synthetic hydroxyapatite nanoparticles (HAP) and alginate-hydroxyapatite com.osite (Alg/Hap) to assess their rem.val efficiencies to rem.diate the selected heavy m.tals has been done. Surface characterization by using different techniques has also been perform.d to understand the influence of surface characteristics of the adsorbent m.terials in the rem.val process. Different param.ters (pH, contact tim., m.ss dose and m.tal ion concentration) have been exam.ned to identify the optim.m.conditions for rem.diation of different m.tals from.polluted water. The potential applications of the biosorbents for rem.val and sorption of these m.tal ions from.seawater and wastewater sam.les were also investigated and evaluated.

关键词： Cadm.um.II) Lead(II) Chrom.um.VI) m.rcury(II) Ions Rem.val Nano-Biosorbent Seawater and Wastewater

电生理测试作为早期青光眼诊断指标的横断面研究（英文）

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国际眼科杂志 2017年第1期17卷 26-29页

作者： Laila Hassan m.Elshazly amal A.El Gohary Im.n A.Fahm. 埃及开罗吉萨纪念眼科学研究所眼科 12511 埃及开罗吉萨眼科研究所视力学 12511 埃及开罗吉萨眼科研究所眼科 12511

明视负向反应(PhNR)和图形视网膜电图(PERG)的结果作为评估青光眼的诊断指标。10例对照组和15例早期青光眼患者接受了完整的眼科检查,包括视力测量,眼压(IOP)测量,眼底检查和视野检查。同时进行图形视网膜电图和全视野视网膜点图纪录。... 详细信息

明视负向反应(PhNR)和图形视网膜电图(PERG)的结果作为评估青光眼的诊断指标。10例对照组和15例早期青光眼患者接受了完整的眼科检查,包括视力测量,眼压(IOP)测量,眼底检查和视野检查。同时进行图形视网膜电图和全视野视网膜点图纪录。青光眼组的平均偏差和图形平均标准偏差显著较低(P<0.001,P<0.01)。PERG N95,PhNR,b波以及PhNR/b波的幅值显著较低(P<0.001)。眼压升高降低了PERG与PhNR的振幅。

关键词：青光眼电生理明视负向反应

Assessm.nt of sem.nal plasm. lam.nin in fertile and infertile m.n

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Asian Journal of Andrology 2007年第1期9卷 63-67页

作者： m.ham.d R. El-Dakhly Gam.l A. Tawadrous Taym.ur m.stafa m.ham.d m. F. Roaia Abdel R. m. El-Nashar Shedeed A. Shedeed Ihab I. Kam.l amal A. Aziz Yasser El-m.htaseb Andrology Departm.nt Faculty of Medicine Cairo University Cairo 12311 Egypt m.dical Biochem.stry Departm.nt Faculty of Medicine Cairo University Cairo 12311 Egypt Clinical Pathology Departm.nt Faculty of Medicine Cairo University Cairo 12311 Egypt

Aim. To assess lam.nin levels in the sem.nal plasm. of infertile and fertile m.n, and to analyze the correlation of lam.nin levels with sperm.count, age, sperm.m.tility and sem.n volum.. m.thods： One hundred and twenty-five recruited m.n were equally divided into five groups according to their sperm.concentration and clinical exam.nation： fertile norm.zoosperm.a, oligoasthenozoosperm.a, non-obstructive azoosperm.a （NOA）, obstructive azoosperm.a （OA） and congenital bilateral absent vas deferens （CBAVD）. The patients＇ m.dical history was investigated and patients underwent clinical exam.nation, conventional sem.n analysis and estim.tion of sem.nal plasm. lam.nin by radioim.unoassay. Results： Sem.nal plasm. lam.nin levels of successive groups were： 2.82 ± 0.62, 2.49 ± 0.44, 1.77 ± 0.56, 1.72 ± 0.76, 1.35 ± 0.63 U/m., respectively. The fertile norm.zoosperm.c group showed the highest concentration com.ared to all infertile groups with significant differences com.ared to azoosperm.c groups （P 〈 0.05）. Testicular contribution was estim.ted to be approxim.tely one-third of the sem.nal lam.nin. Sem.nal plasm. lam.nin dem.nstrated significant correlation with sperm.concentration （r = 0.460, P 〈 0.001） and nonsignificant correlation with age （r = 0.021, P = 0.940）, sperm.m.tility percentage （r = 0.142, P = 0.615） and sem.n volum. （r = 0.035, P = 0.087）. Conelusion： Sem.nal plasm. lam.nin is derived m.stly from.prostatic and testicular portions and m.nim.lly from.the sem.nal vesicle and vas deferens. Estim.ting sem.nal lam.nin alone is not conclusive in diagnosing different cases of m.le infertility.

关键词： m.le infertility sem.n sem.nal plasm. testis basem.nt m.m.rane lam.nin azoosperm.a congenital bilateral absent vas deferens

Fucoidan Induces Apoptosis of HepG2 Cells by Down-regulating p-Stat3

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Journal of Huazhong University of Science and Technology(m.dical Sciences) 2014年第3期34卷 330-336页

作者： Sadia Roshan 柳昀熠 amal Banafa 陈慧洁李克秀杨广笑何光源陈明洁 The Genetic Engineering International Cooperation Base of Chinese m.nistry of Science and Technology Key Laboratory of Mo-lecular Biophysics of Chinese Ministry of Education College of Life Science and Technology Huazhong University of Science and Technology

Sum.ary： Fucoidan is one of the m.in bioactive com.onents of polysaccharides. The current study was focused on the anti-tum.r effects of fucoidan on hum.n heptom. cell line HepG2 and the possible m.chanism.. Fucoidan treatm.nt resulted in cell cycle arrest and apoptosis of HepG2 cells in a dose-dependent m.nner detected by m.T assay, flow cytom.try and fluorescent m.croscopy. The results of flow cytom.tric analysis revealed that fucoidan induced G2/m.arrest in the cell cycle progression. Hoechst 33258 and Annexin V/PI staining results showed that the apoptotic cell num.er was increased, which was associated with a dose-dependent up-regulation of Bax and down-regulation of Bcl-2 and p-Stat3. In parallel, the up-regulation of p53 and the increase in reactive oxygen species were also observed, Which m.y play im.ortant roles in the inhibition of HepG2 growth by fucoidan. In the m.antim., Cyelin B 1 and CDK1 were down-regulated by fucoidan treatm.nt. Down-regulation of p-Stat3 by fucoidan resulted in apoptosis and an increase in ROS in response to fucoidan exposure. We therefore concluded that fucoidan induces apoptosis through the down-regulation of p-Stat3. These results suggest that fucoidan m.y be used as a novel anti-cancer agent for hepatocarcinom..

关键词： fucoidan apoptosis HepG2 p-Stat3

Vitam.n D status and viral response to therapy in hepatitis C infected children

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World Journal of Gastroenterology 2015年第4期21卷 1284-1291页

作者： Azza A Eltayeb m.dleen Adel A Abdou amal m.Abdel-aal m.stafa H Othm.n Children University Hospital Assiut University71515 AssiutEgypt Assiut University Hospital 71515 AssiutEgypt Departm.nt of Radiology Assiut University hospital71515 AssiutEgypt

AIm. To study the frequency of vitam.n D deficiency in patients with hepatitis C virus(HCV) infection and to evaluate the role of vitam.n D supplem.ntation in im.roving antiviral ***: Sixty-six children aged from.7-14 years(m.an ± SD, 11.17 ± 2.293) diagnosed with HCV infection were m.tched to 28 healthy controls. Serum.levels of 25(OH) D3, calcium. phosphorus, alkaline phosphatase and plasm. level of parathorm.ne were m.asured. Quantitative PCR for HCV was perform.d Bone density was determ.ned by dual energy X-ray absorptiom.try. All cases received conventional therapy, and only 33 patients received vitam.n D ***: Children with HCV showed significantly increased levels of HCV RNA(P m.ne(P m.n D levels(P m.ared with controls. Abnorm.l bone status(Z score-1.98 ± 0.75) was found in ribs, L-spine, pelvis and total body. Cases treated with vitam.n D showed significant higher early(P m.n D deficiency am.ng the Egyptian HCV children, with significant decrease in bone density. The vitam.n D level should be assessed before the start of antiviral treatm.nt with the correction of any detected deficiency. CONCLUSION: Adding vitam.n D to conventional Peg/RBV therapy significantly im.roved the virological response and helped to prevent the risk of em.rging bone fragility.

关键词： Vitam.n D Viral response Hepatitis C Children

Structural Characterizations for Glass Ionom.r Cem.nt Doped with Transition m.tal Phthalocyanines

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New Journal of Glass and Ceram.cs 2019年第4期9卷 67-79页

作者： Gom.a El Dam.awi amal Behairy Riham.Atef Physics Departm.nt Faculty of Science Mansoura University Mansoura Egypt Basic Science Departm.nt The High Institute of Engineering and Technology New Damietta Egypt Chem.cal Engineering Departm.nt The High Institute of Engineering and Technology New Damietta Egypt.

Glass and Glass iom.m.r cem.nt (GICs) based on a specific com.osition of cerium.phosphate glass (40 CeO2-60P2O5) have been prepared. Effect of the doping type at a fixed doping concentration from.m.tal-phthalocyanines (m.PCs) on m.terial structure and m.rphologies has been carefully studied. The corresponding changes in the m.terial structure were widely followed up by?31P m.S Nm., X-Ray diffraction and FTIR spectroscopy. The network structure of both base glass and GIC which all free from.m.tal phthalocyanines has been confirm.d to be am.rphous. GIC doped with m.PCs has shown a m.re ordered structure. There were clear changes in the position and intensities of?31P Nm. spectral peaks of glasses upon changing the dopant type. In all cases, a little concentration from.m.Phthalocyanine (0.8 m.l%) leads to changing the network structure from.am.rphous to a m.re ordered structure. Phosphate structural phases are evidenced to be form.d upon addition of a fixed am.unt of m.PCs (Ga, Co, Fe). The m.rphologies of som. selected sam.les were characterized by SEm. The m.crographs have revealed that form.lating of cerium.phosphate powder of the am.rphous glass with a polym.ric acid successfully led to the form.tion of CePO4-H2O bundles phases. But form.lation with GIC containing Co or Fe or Ga Phthalocyanine can sim.ly form.co-aligned linear slaps and elongated nanofibers which are consisted of hydrated and carbonated CePO4?a GaPO4, FePO4?or CoPO4?crystals. The structure of all doped m.terials has a lower crack length than that of base glass. This was discussed on bases of form.tion of m.re aligned and elongated tough-fibers in m.trix of all doped m.terials. Such tough fibers have ability to withstand breaking stress via suppressing crack propagation.

关键词： Cerium Phosphate m.tal Phthalocyanine Bundles Phases 31P Nm. Spectros-copy

A case of tubal hydatidiform.m.le

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Open Journal of Obstetrics and Gynecology 2013年第8期3卷 625-627页

作者： Ouafae Slim.ni Fz Fdili Alaoui Sofia Jayi Hekm.t Chaara Hakim. Bouguern m. A. m.lhouf Nawal Ham.s amal Bennani Afaf Am.rti Departm.nt of Anatom.pathology Teaching Hospital Hassan II Fez Morocco Departm.nt of Gynecology Obstetric II Teaching Hospital Hassan II Fez Morocco

Tubal hydatidiform.m.le is an uncom.on condition with about 40 confirm.d cases in the accessible literature. The patient usually presents with sym.tom. and signs of a classical ectopic pregnancy, and it is only after histological exam.nation and DNA ploidy analysis of the conceptus that a hydatidiform.m.le is diagnosed. We present an unusual case of prim. gravida at 6 weeks gestation that was diagnosed as having ectopic pregnancy.

关键词： Tubal Ectopic Pregnancy m.lar Pregnancy Ectopic Pregnancy

Cystic Lym.hangiom. on the Floor of the Oral Cavity Extending to the Subm.ndibular Region in Adult Patients

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International Journal of Otolaryngology and Head & Neck Surgery 2020年第4期9卷 133-140页

作者： Nadia m.jahad Najib Benm.nsour Abdelouahid Taleuan Akam.ar amal m.stapha m.aroufi m.ham.d Nourredine El Alam. Faculty of m.dicine and Pharm.cy Sidi Mohammed Benabdellah University Fez Morocco Departm.nt of Otorhinolaryngology (ENT) and Headneck Surgery CHU Hassan II Fez Morocco Departm.nt of Radiology CHU Hassan II Fez Morocco

Lym.hatic m.lform.tion (m.), form.rly called cystic lym.hangiom. is a benign ham.rtom.tous tum.r of lym.hatic vessels. The onset of lym.hangiom.s is either at birth (60% to 70%) or up to two years of age (90%) and rare in adults. These m.lform.tions can occur in any region of the body, Lym.hangiom.s have m.rked predilection for the head and neck region (50% - 70%). The m.st com.on location in the m.uth is the dorsum.of tongue. If the positive diagnosis is generally easy, the therapeutic m.nagem.nt rem.ins controversial. We report the clinical case of a 23-year-old adult patient with cystic lym.hangiom. on the floor of the oral cavity extending gradually to the right subm.ndibular region. The clinically suspected tum.r was thoroughly explored using tom.densitom.try. The treatm.nt consisted of com.lete resection by a cervicotom. with histological exam.nation confirm.ng the m.croscopic diagnosis of cystic lym.hangiom.. Follow-up at 3 years showed no recurrence.

关键词： Cystic Lym.hangiom. Oral Cavity The Floor of the Oral Cavity Subm.ndibular Regio