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Hossam M. Yehia,Nasreen Abdelalim,I. El-Mahallawi,Tamer Abd-elmotaleb,W. Hoziefa 대한기계학회 2023 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.37 No.4
In this study, alumina and graphite in a 98 % to 2 % ratio were prepared by mechanical milling for 80 hrs, then surface coated with 2 %Ag. The motorcycle wheel aluminum swarf was melted at 800 °C then the new hybrid (Al 2 O 3 -GNs)Ag in proportions of 1, 2, and 3 wt% was added at 600 rpm for 10 min. The microstructure of the rolled samples showed a good distribution of the hybrid (Al 2 O 3 -GNs)Ag and good adhesion with the aluminum matrix. The hardness increased by adding alumina and the hybrid up to 3 %. The as-rolled 3 %(Al 2 O 3 -GNs)Ag samples gave the best mechanical properties (yield strength, tensile strength, and elongation) compared to the as-cast aluminum reinforced with alumina and hybrid. The corrosion rate was improved by reinforcing the aluminum with the hybrid (Al 2 O 3 -GNs)Ag. Due to reducing the particles size and increasing the surface area after the rolling process, a deterioration in the corrosion resistance was observed.
Fakhry, Amal Bahgat,Ahmed, Asmaa Ismail,AbdelAlim, Mahmoud Abdo,Ramadan, Dalia Ibrahim Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.5
Background: The reversion-inducing-cysteine-rich protein with Kazal motifs (RECK) gene is a novel transformation suppressor gene linked to several malignancies. Objective: To analyze any association between RECK gene rs10814325 single-nucleotide polymorphism (SNP) and HCC susceptibility with various clinicopathological and laboratory data. Materials and Methods: RECK gene rs10814325 SNP was estimated, using real-time PCR, in 30 HCC patients on top of HCV infection, 30 HCV related cirrhotic patients and 30 healthy controls. Results: No special pattern of association could be detected on comparing the RECK gene rs10814325 genotypes(P=0.5), or alleles(P=0.49) among the studied groups. HCC patients with TT genotype had younger age (mean of $54.1{\pm}6.0$ years vs $60.6{\pm}10.2$ years for TC/CC genotypes, P=0.035). Abdominal distension was significantly greater in TT genotype patients (75% vs 30%for TC/CC genotypes, P=0.045). The TT genotype was present in 75% of patients with lymph node metastasis. Serum GGT levels were higher in TT genotype patients [80 (48.5-134.8) IU/L vs 40 (33-87.5) IU/L for TC/CCgenotypes], and lower limb edema was observed in 60% for TT vs 20% for TC/CCgenotypes, but both just failed to reach significance (p=0.05 and p=0.06 respectively). Conclusions: RECK gene rs10814325 T>C could not be considered a risk factor for HCC development on top of HCV, but may be related to the disease progression and metastasis.
Aad, G.,Abajyan, T.,Abbott, B.,Abdallah, J.,Abdel Khalek, S.,Abdelalim, A. A.,Abdinov, O.,Aben, R.,Abi, B.,Abolins, M.,AbouZeid, O. S.,Abramowicz, H.,Abreu, H.,Acharya, B. S.,Adamczyk, L.,Adams, D. L. Springer-Verlag 2013 European Physical Journal C Vol.73 No.3
<P>A measurement of the top quark pair production cross section in the final state with a hadronically decaying tau lepton and jets is presented. The analysis is based on proton–proton collision data recorded by the ATLAS experiment at the LHC, with a centre-of-mass energy of 7 TeV. The data sample corresponds to an integrated luminosity of 1.67 fb<SUP>−1</SUP>. The cross section is measured to be [FORMULA OMISSION] and is in agreement with other measurements and with the Standard Model prediction.</P>
Search for heavy long-lived charged particles with the ATLAS detector in pp collisions at s=7 TeV
ATLAS Collaboration,Aad, G.,Abbott, B.,Abdallah, J.,Abdelalim, A.A.,Abdesselam, A.,Abdinov, O.,Abi, B.,Abolins, M.,Abramowicz, H.,Abreu, H.,Acerbi, E.,Acharya, B.S.,Adams, D.L.,Addy, T.N.,Adelman, J. North-Holland Pub. Co 2011 Physics letters: B Vol.703 No.4
A search for long-lived charged particles reaching the muon spectrometer is performed using a data sample of 37 pb<SUP>-1</SUP> from pp collisions at s=7 TeV collected by the ATLAS detector at the LHC in 2010. No excess is observed above the estimated background. Stable τ@? sleptons are excluded at 95% CL up to a mass of 136 GeV, in GMSB models with N<SUB>5</SUB>=3, m<SUB>messenger</SUB>=250 TeV, sign(μ)=1 and tanβ=5. Electroweak production of sleptons is excluded up to a mass of 110 GeV. Gluino R-hadrons in a generic interaction model are excluded up to masses of 530 GeV to 544 GeV depending on the fraction of R-hadrons produced as g@?-balls.
Aad, G.,Abajyan, T.,Abbott, B.,Abdallah, J.,Abdel Khalek, S.,Abdelalim, A. A.,Abdinov, O.,Aben, R.,Abi, B.,Abolins, M.,AbouZeid, O. S.,Abramowicz, H.,Abreu, H.,Acharya, B. S.,Adamczyk, L.,Adams, D. L. Springer 2013 European Physical Journal C Vol.73 No.8
<P>The inclusive jet cross-section has been measured in proton–proton collisions at [FORMULA OMISSION] in a dataset corresponding to an integrated luminosity of [FORMULA OMISSION] collected with the ATLAS detector at the Large Hadron Collider in 2011. Jets are identified using the anti-<I>k</I><SUB><I>t</I></SUB> algorithm with two radius parameters of 0.4 and 0.6. The inclusive jet double-differential cross-section is presented as a function of the jet transverse momentum <I>p</I><SUB>T</SUB> and jet rapidity <I>y</I>, covering a range of 20≤<I>p</I><SUB>T</SUB><430 GeV and |<I>y</I>|<4.4. The ratio of the cross-section to the inclusive jet cross-section measurement at [FORMULA OMISSION], published by the ATLAS Collaboration, is calculated as a function of both transverse momentum and the dimensionless quantity [FORMULA OMISSION], in bins of jet rapidity. The systematic uncertainties on the ratios are significantly reduced due to the cancellation of correlated uncertainties in the two measurements. Results are compared to the prediction from next-to-leading order perturbative QCD calculations corrected for non-perturbative effects, and next-to-leading order Monte Carlo simulation. Furthermore, the ATLAS jet cross-section measurements at [FORMULA OMISSION] and [FORMULA OMISSION] are analysed within a framework of next-to-leading order perturbative QCD calculations to determine parton distribution functions of the proton, taking into account the correlations between the measurements.</P>