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| 1 | Elastic properties of chiral,anti-chiral,and hierarchical honeycombs:A simple energy-based approach显示文摘The effects of two geometric refinement strategies widespread in natural structures, chirality and self-similar hierarchy, on the in-plane elastic response of two-dimensional honeycombs were studied systematically. Simple closed-form expressions were derived for the elastic moduli of several chiral, antichiral, and hierarchical honeycombs with hexagon and square based networks. Finite element analysis was employed to validate the analytical estimates of the elastic moduli. The results were also compared with the numerical and experimental data available in the literature. We found that introducing a hierarchical refinement increases the Young's modulus of hexagon based honeycombs while decreases their shear modulus. For square based honeycombs, hierarchy increases the shear modulus while decreasing their Young's modulus. Introducing chirality was shown to always decrease the Young's modulus and Poisson's ratio of the structure. However, chirality remains the only route to auxeticity. In particular, we found that anti-tetra-chiral structures were capable of simultaneously exhibiting anisotropy, auxeticity,and remarkably low shear modulus as the magnitude of the chirality of the unit cell increases. | Davood Mousanezhad Babak Haghpanah Ranajay Ghosh Abdel Magid Hamouda Harold Nayeb-Hashemi Ashkan Vaziri | 2016 | Theoretical & Applied Mechanics Letters2016，6，2： | 11 |
| 2 | Current perspectives of nanoparticles in medical and dental biomaterials显示文摘Nanotechnology is gaining tremendous impetus due to its capability of modulating metals into their nanosize, which drastically changes the chemical, physical and optical properties of metals. Nanoparticles have been introduced as materials with good potential to be extensively used in biological and medical applications. Nanoparticles are clusters of atoms in the size range of 1-100 nm. Inorganic nanoparticles and their nano-composites are applied as good antibacterial agents. Due to the outbreak of infectious diseases caused by different pathogenic bacteria and the development of antibiotic resistance, pharmaceutical companies and researchers are searching for new antibacterial agents. The metallic nanoparticles are the most promising as they show good antibacterial properties due to their large surface area to volume ratios, which draw growing interest from researchers due to increasing microbial resistance against metal ions, antibiotics and the development of resistant strains. Metallic nanoparticles can be used as effective growth inhibitors in various microorganisms and thereby are applicable to diverse medical devices. Nanotechnology discloses the use of elemental nanoparticles as active antibacterial ingredient for dental materials. In dentistry, both restorative materials and oral bacteria are believed to be responsible for restoration failure. Secondary caries is found to be the main reason to restoration failure. Secondary caries is primarily caused by invasion of plaque bacteria (acid-producing bacteria) such as Streptococcus mutans and lactobacilli in the presence of fermentable carbohydrates. To make long-lasting restorations, antibacterial materials should be made. The potential of nanoparticles to control the formation of biofilms within the oral cavity is also coming under in- creasing scrutiny. Possible uses of nanoparticles as topically applied agents within dental materials and the appli- cation of nanoparticles in the control of oral infections are also reviewed. | Ibrahim Mohamed Hamouda | 2012 | The Journal of Biomedical Research2012，26，3： | 5 |
| 3 | p53 antibodies,metallothioneins,and oxidative stress markers in chronic ulcerative colitis with dysplasia显示文摘AIM:To investigate the role of p53 antibodies (p53Abs),metallothioneins (MTs) and oxidative stress markers in the early detection of dysplasia in chronic ulcerative colitis (UC).METHODS:The study included 30 UC patients,15 without dysplasia (group Ⅱ) and 15 with dysplasia (group Ⅲ),in addition to 15 healthy volunteers (group Ⅰ,control subjects).The enzyme-linked immunosorbent assay technique was used to measure serum p53Abs and MTs,while advanced oxidation protein products (AOPPs),and reduced glutathione (GSH) levels were measured by spectrophotometric method in all subjects.RESULTS:In group Ⅱ and group Ⅲ compared to group Ⅰ,there were significant increases in serum levels of AOPPs (145.94 ± 29.86 μmol/L and 192.21 ± 46.71 μmol/L vs 128.95 ± 3.06 μmol/L,P < 0.002 and P <0.001,respectively),MTs (8.18 ± 0.35 μg/mL and 9.20 ± 0.58 μg/mL vs 6.12 ± 0.25 μg/mL,P < 0.05 and P < 0.05,respectively),and p53Abs (20.19 ± 3.20 U/mL and 34.66 ± 1.34 U/mL vs 9.42 ± 1.64 U/mL,P < 0.001 and P < 0.001,respectively).There were significantly higher levels of AOPPs (P < 0.05) and p53Abs (P < 0.001) in UC patients with dysplasia compared to those without dysplasia,while MTs showed no significant difference between the 2 groups (P > 0.096).In contrast,GSH levels showed a significant decrease in both patients' groups (1.87 ± 0.02 μmol/mL and 1.37 ± 0.09 μmol/mL vs 2.49 ± 0.10 μmol/mL,P < 0.05 and P < 0.05 in groups Ⅱ and Ⅲ,respectively) compared with group Ⅰ,and the levels were significantly lower in group Ⅲ than group Ⅱ (P < 0.05).There was a positive correlation between AOPPs and both MTs (r=0.678,P < 0.001) and p53Abs (r=0.547,P < 0.001),and also between p53Abs and MTs (r=0.739,P < 0.001).There was a negative correlation between AOPPs and GSH (r =-0.385,P < 0.001),and also between GSH and both MTs (r=-0.662,P < 0.001) and p53Abs (r=-0.923,P < 0.001).CONCLUSION:Oxidative stress and oxidative cellular damage play an important role in the pathogenesis of chronic UC and the associated carcinogenetic process.p53Abs levels could help in early detection of dysplasia in these conditions. | Hala E Hamouda Soha S Zakaria Saber A Ismail Mahmoud A Khedr Wael W Mayah | 2011 | World Journal of Gastroenterology2011，17，19： | 5 |
| 4 | 腹腔镜腹股沟疝TEP修补术后补片移位并侵蚀膀胱显示文摘《中华疝和腹壁外科杂志(电子版)》正式出版发行2年余,承蒙广大读者的厚爱,杂志有了长足的进步。在本期杂志中,我们开辟了一个新的栏目'国外医学动态',为广大读者提供国外相关杂志上的新发现、新方法、新进展,以及临床实践中所遇到的困难、问题等,旨在与读者分享国外的先进经验并借鉴有关的教训。同时也欢迎广大读者就专栏中文章的观点或方法展开讨论,我们也会邀请专家对此进行点评。 | Hamouda J. Kennedy N. Grant A. Nigam N. Karanjia 王亮(译) 陈双(校) | 2011 | 中华疝和腹壁外科杂志(电子版)2011，5，1： | 3 |
| 5 | Aggressive primary hepatic epithelioid hemangioendothelioma:a case report and literature review显示文摘A new case of epithelioid hemangioendothelioma is reported to have occurred to a 67-year-old patient who consulted for rightsided chest pain. The work-up showed multiple right pulmonary lesions associated with bilateral moderate pleural effusion and left-sided pleural thickening and three hypodense nodules in the right lobe of the liver, peritoneal thickening, ascites, and multiple vertebral lytic lesions. The diagnosis of an epithelioid hemangioendothelioma was concluded through a histological examination of a computed tomography scan guided biopsy of the liver. The patient received a primary mono-chemotherapy with Adriamycin(75 mg/m^2 every three weeks) and intravenous bisphosphonates without response and general status impairment. The patient died after 16 months of follow-up. | Mehdi Afrit Meher Nasri Soumaya Labidi Nesrine Mejri Houda El Benna Hamouda Boussen | 2017 | Cancer Biology & Medicine2017，14，2： | 3 |
| 6 | Physiological, histopathological and cellular immune effects of Pergularia tomentosa extract on Locusta migratoria nymphs显示文摘The migratory locust Locusta migratoria(Orthoptera,Acrididae)is one of the most important pests due to its extensive and severe damage to crops in large parts of Africa and Asia.Biodegradable and ecologically natural products such as bota nical insecticides are emergi ng can didates for replaceme nt of usually applied chemical pesticides.The crude methanolic extract of Pergularia tomentosa(PME)was investigated for their toxicity and physiological aspects on L.migratoria nymphs.Results showed that treatment of newly emerged fourth and fifth instar nymphs resulted in significant mortality and significant repellent activity with an LC50 value of 0.18 and 0.38%,respectively,after seven days of treatment.The PME toxicity was also dem on strated by histopathological cha nges in the alime ntary canal resulting in con siderable disorganization and severe damage of the caeca and proventriculus structure.The extract induced cellular immune reactions which manifested by a significant decrease in the number of the differential haemocyte counts(prohemocytes and plasmatocytes)and important cell lysis.Data of biochemical analyses showed that the PME reduced the activity of acetylcholinesterase and induced the glutathione S-transferases.The neurotoxic effect was confirmed by the histological alterations in the brain structure,particularly in the neurosecretory cells showing typical signs of cell necrosis. | Meriam Miladi Khemais Abdellaoui Amel Ben Hamouda Iteb Boughattas Mouna Mhafdhi Fatma Acheuk Monia Ben Halima-Kamel | 2019 | Journal of Integrative Agriculture2019，18，12： | 2 |
| 7 | A simplified two-dimensional boundary element method with arbitrary uniform mean flow显示文摘To reduce computational costs, an improved form of the frequency domain boundary element method(BEM) is proposed for two-dimensional radiation and propagation acoustic problems in a subsonic uniform flow with arbitrary orientation. The boundary integral equation(BIE) representation solves the two-dimensional convected Helmholtz equation(CHE) and its fundamental solution, which must satisfy a new Sommerfeld radiation condition(SRC) in the physical space. In order to facilitate conventional formulations, the variables of the advanced form are expressed only in terms of the acoustic pressure as well as its normal and tangential derivatives, and their multiplication operators are based on the convected Green's kernel and its modified derivative. The proposed approach significantly reduces the CPU times of classical computational codes for modeling acoustic domains with arbitrary mean flow. It is validated by a comparison with the analytical solutions for the sound radiation problems of monopole,dipole and quadrupole sources in the presence of a subsonic uniform flow with arbitrary orientation. | Bassem Barhoumi Safa Ben Hamouda Jamel Bessrour | 2017 | Theoretical & Applied Mechanics Letters2017，7，4： | 2 |
| 8 | A comparative study on the starting methods of three phase wound- rotor induction motor-Part I显示文摘 | Hamouda R M Alolah A I Badr M A | 1999 | IEEE Trans on Energy Conversion1999，14，4： | 1 |
| 9 | Interior layer for second-order singular equations显示文摘 | Hamouda M | 2002 | Applicable Analysis2002，81，2： | 1 |
| 10 | Klebsiella pneumoniae susceptibility to biocides and its association with cep A,qacΔE and qac E efflux pump genes and antibiotic resistance显示文摘 | Abuzaid A Hamouda A Amyes SG | 2012 | J Hosp Infect2012，8，2： | 1 |
| 11 | Modeling the Thermal Protective Performance of Heat Resist- ant Garments in Flash Fire Exposures 显示文摘 | SONG G Barker R L Hamouda H | 2004 | Textile Research Journal2004，74，12： | 1 |
| 12 | Strength of preference in the graph model for conflict resolution 显示文摘 | Hamouda L Kilgour D M Hipel K W | 2004 | Group Decision and Negotiation2004，13，5： | 1 |
| 13 | Thoracic myelopathy caused by ossifcation of the ligamentum fiavum: a report of 18 cases 显示文摘 | Ben Hamouda K Jemel H Haouet S | 2003 | J Neurosurg2003，2，： | 1 |
| 14 | Effect of fatty acids,water composition and pH on the wettability alteration of calcite surface显示文摘 | Hamouda A A | 2006 | Joumal of Petroleum Science and Engineering2006，50，： | 1 |
| 15 | Fitting lactation curves of dairy cattle in different types of herds in Tunisia显示文摘 | REKIK B GARE A B HAMOUDA M B | 2003 | Livest Prod Sci2003，83，： | 1 |
| 16 | Strength of preference in graph models for multiple-decision-makerconflicts 显示文摘 | Hamouda L Kilgour D M Hipel K W | 2006 | Applied Mathematics and Computation2006，179，1： | 1 |
| 17 | Modeling of the thermal history of the sand casting process 显示文摘 | Sulaiman S Hamouda A M S | 2001 | Journal of Materials Processing Technology2001，113，： | 1 |
| 18 | A doubleblind randomized trial of wound and intercostal space infiltration with ropivacaine during breast cancer surgery:effects on chronic postoperative pain显示文摘 | Albi-Feldzer A Hamouda S Motamed C | 2013 | Anesthesiology2013，118，2： | 1 |
| 19 | Fatigue cracking resistance of fiber-reinforced asphalt concrete 显示文摘 | LEE S JOON RUST JONP HAMOUDA H | 2005 | Textile Research Journal2005，75，2： | 1 |
| 20 | Mesh erosion into the urinary bladder following laparoscopic inguinal hernia repair;is this the tip of the iceberg?显示文摘 | Hamouda A Kennedy J Grant N | 2010 | Hernia2010，14，3： | 1 |
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