Pushover analysis of gabled frames with semi-rigid connections

Ahmad Shooshtari,Sina Heyrani Moghaddam,Amir R. Masoodi 국제구조공학회 2015 Steel and Composite Structures, An International J Vol.18 No.6

The nonlinear static analysis of structure, which is under the effect of lateral loads and provides the capacity curve of the structure, is defined as a push-over analysis. Ordinarily, by using base shear and the lateral displacement of target point, the capacity curve is obtained. The speed and ease of results interpretation in this method is more than that of the NRHA responses. In this study, the nonlinear static analysis is applied on the semi-rigid steel gabled frames. It should be noted that the members of this structure are analyzed as a prismatic beam-column element in two states of semi-rigid connections and supports. The gabled frame is modeled in the OpenSees software and analyzed based on the displacement control at the target point. The lateral displacement results, calculated in the top level of columns, are reported. Furthermore, responses of the structure are obtained for various support conditions and the rigidity of nodal connections. Ultimately, the effect of semi-rigid connections and supports on the capacity and the performance point of the structure are presented in separated graphs.

A new metallic energy dissipation system for steel frame based on negative Poisson’s ratio structures

Milad Masoodi,Ahmad Ganjali,Hamidreza Irani,Aboozar Mirzakhani 국제구조공학회 2024 Structural Engineering and Mechanics, An Int'l Jou Vol.89 No.1

Using negative Poisson’s ratio materials, an innovative metallic-yielding damper is introduced for the first time in this study. Through the use of ABAQUS commercial software, a nonlinear finite element analysis is conducted to determine the performance of the proposed system. Mild steel plates with elliptical holes are used for these types of dampers, which dissipate energy through an inelastic deformation of the constitutive material. To assess the capability of the proposed damper, nonlinear quasi-static finite element analyses have been conducted on the damper with a variety of geometric parameters. According to the results, the proposed system is ductile and has a high capacity to dissipate energy. The proposed auxetic damper has a specific energy absorption of 910.8 J/kg and a ductility of 33.6. Therefore, this damper can dissipate a large amount of earthquake input energy without buckling by increasing the buckling load of the brace with its ductile behavior. In addition, it was found that by incorporating auxetic dampers in the steel frame, the frame was made harder, stronger, and ductile and its energy absorption increased by 300%.

Oil Biosynthesis and its Related Variables in Developing Seeds of Mustard (Brassica juncea L.) as Influenced by Sulphur Fertilization

Fazili, Inayat S.,Masoodi, Muzain,Ahmad, Saif,Jamal, Arshad,Khan, Jafar S.,Abdin, Malik Z. 한국작물학회 2010 Journal of crop science and biotechnology Vol.13 No.1

Role of +405C>G and +936C>T Polymorphisms of the Vascular Endothelial Growth Factor Gene and Risk of Esophageal Cancer in the Kashmiri Population

Qasim, Iqbal,Bhat, Imtiyaz Ahmad,Masoodi, Khalid Zafar,Shah, Zafar Amin Asian Pacific Journal of Cancer Prevention 2015 Asian Pacific journal of cancer prevention Vol.16 No.1

Background: The gene for the vascular endothelial growth factor (VEGF), which promotes angiogenesis and permeability, is polymorphic. The aim of the present study was to evaluate the relationship between +936C>T and +404C>G polymorphism of VEGF with risk of esophageal cancer in the Kashmiri population in India. Materials and Methods: 150 esophageal cancer patients and 150 unrelated healthy controls were genotyped for two VGEF SNPs (+405C/G, and +936C/T) using DNA extracted from prospectively collected blood samples by the PCR-RFLP method. Results: For the VEGF +936C>T polymorphism a significant association of CT and combined CT+TT genotypes was observed with increased risk of esophageal cancer (p=0.021; 0.024). For the +405C>G polymorphism we observed significantly increased frequency of GG genotype in cases as compared to controls and also the +405 GG Genotype was observed to have a two fold risk(OR=2.7356; 95%CI=1.1409-6.5593; p=0.020). The combined genotypes of GG-CC and GG-CT of +405C>G and +936C>T were found to be significantly associated with increased risk of esophageal cancer (p=0.0376; 0.0099). Conclusions: From the results of the present study a significant association of +936C>T and +405C>G polymorphisms with increased esophageal cancer risk exists in the Kashmiri population.

Oil Biosynthesis and its Related Variables in Developing Seeds of Mustard (Brassica juncea L.) as Influenced by Sulphur Fertilization

Inayat S. Fazili,Malik Z. Abdin,Muzain Masoodi,Saif Ahmad,아샤드자말,Jafar S. Khan 한국작물학회 2010 Journal of crop science and biotechnology Vol.13 No.1

The aim of this research was to study the effect of sulphur (S) fertilization on oil biosynthesis and its related variables at various stages of seed development, and to find possible explanations for increased oil content in the seeds of mustard (Brassica juncea L. Czern and Coss) due to S fertilization. Acetyl-CoA carboxylase activity and contents of oil, acetyl-CoA, soluble protein, total RNA,total sugar and sulphur were determined in the developing seeds of mustard grown in the field with sulphur (+S) and without sulphur (-S). The period between 10 to 30 days after flowering was observed as the active period of oil accumulation in the developing seeds of mustard. The accumulation of the oil was preceded by a marked rise in acetyl-CoA carboxylase activity and acetyl-CoA concentration,which declined rapidly when oil accumulation reached a plateau. Total sugar content decreased, while protein content increased during the active period of oil accumulation in the developing seeds (i.e. between 10-30 days after flowering). Sulphur fertilization significantly (P < 0.05) enhanced the oil accumulation in the developing seeds at all the growth stages. The increase in the oil content was 5-63% with S fertilization over the control treatment. Acetyl-CoA carboxylase activity and contents of acetyl-CoA,soluble protein, total RNA and sugar were significantly (P < 0.05) higher in the developing seeds of +S-treated plants compared to -S-treated plants. It is suggested that the increase in the oil content with sulphur fertilization may be associated with the increases in acetyl-CoA carboxylase activity through the enhancement of acetyl-CoA concentration. Further, the increased sugar content due to S fertilization provided enough carbon source and energy for oil biosynthesis.

Mushroom varieties found in the Himalayan regions of India: Antioxidant, antimicrobial, and antiproliferative activities

Asma Ashraf Khan,Adil Gani,Mudasir Ahmad,Farooq Ahmad Masoodi,Furheen Amin,Shaheen Kousar 한국식품과학회 2016 Food Science and Biotechnology Vol.25 No.4

This study evaluates the antioxidant, antimicrobial, and antiproliferative activities ofmushroom varieties (Agaricus bisporus, Pleurotus ostreatus, and Coprinus atramentarius) found in theHimalayan regions of Jammu and Kashmir, India. All three mushroom varieties exhibited antioxidantactivity. A. bisporus showed the highest diphenyl-2-picrylhydrazyl inhibition activity (87.88±5.6%), C. atramentarius showed the highest reducing power (0.49±0.01) and metal chelating ability (48.57±0.38%), and P. ostreatus contained the highest phenolic (5.25±0.14 mg gallic acid equivalent per gram)and flavonoid content (64.39±0.73 μg rutin equivalent per gram). C. atramentarius showed maximumantibacterial activity against all the pathogenic strains and the highest zone of inhibition was against S. typhi (7.45±0.5 mm). P. ostreatus exhibited the highest cell proliferation inhibition against Colo-205and MCF-7 cancer cell lines. The structural analysis by Fourier transform infrared spectroscopyindicated the presence of β-configuration in carbohydrates, phenolic compounds, and protein, whichimpart nutraceutical properties to mushrooms.

Mushroom varieties found in the Himalayan regions of India: Antioxidant, antimicrobial, and antiproliferative activities

Khan, Asma Ashraf,Gani, Adil,Ahmad, Mudasir,Masoodi, Farooq Ahmad,Amin, Furheen,Kousar, Shaheen 한국식품과학회 2016 Food Science and Biotechnology Vol.25 No.4

This study evaluates the antioxidant, antimicrobial, and antiproliferative activities of mushroom varieties (Agaricus bisporus, Pleurotus ostreatus, and Coprinus atramentarius) found in the Himalayan regions of Jammu and Kashmir, India. All three mushroom varieties exhibited antioxidant activity. A. bisporus showed the highest diphenyl-2-picrylhydrazyl inhibition activity ($87.88{\pm}5.6%$), C. atramentarius showed the highest reducing power ($0.49{\pm}0.01$) and metal chelating ability ($48.57{\pm}0.38%$), and P. ostreatus contained the highest phenolic ($5.25{\pm}0.14mg$ gallic acid equivalent per gram) and flavonoid content ($64.39{\pm}0.73{\mu}g$ rutin equivalent per gram). C. atramentarius showed maximum antibacterial activity against all the pathogenic strains and the highest zone of inhibition was against S. typhi ($7.45{\pm}0.5mm$). P. ostreatus exhibited the highest cell proliferation inhibition against Colo-205 and MCF-7 cancer cell lines. The structural analysis by Fourier transform infrared spectroscopy indicated the presence of ${\beta}-configuration$ in carbohydrates, phenolic compounds, and protein, which impart nutraceutical properties to mushrooms.

Measurement of quarkonium production at forward rapidity in [FORMULA OMISSION] collisions at [FORMULA OMISSION] TeV

Abelev, B.,Adam, J.,Adamová,, D.,Aggarwal, M. M.,Agnello, M.,Agostinelli, A.,Agrawal, N.,Ahammed, Z.,Ahmad, N.,Ahmad Masoodi, A.,Ahmed, I.,Ahn, S. U.,Ahn, S. A.,Aimo, I.,Aiola, S.,Ajaz, M.,Akind Springer Berlin Heidelberg 2014 European Physical Journal C Vol.74 No.8

<P>The inclusive production cross sections at forward rapidity of [FORMULA OMISSION], [FORMULA OMISSION], [FORMULA OMISSION](1S) and [FORMULA OMISSION](2S) are measured in [FORMULA OMISSION] collisions at [FORMULA OMISSION] with the ALICE detector at the LHC. The analysis is based on a data sample corresponding to an integrated luminosity of 1.35 pb[FORMULA OMISSION]. Quarkonia are reconstructed in the dimuon-decay channel and the signal yields are evaluated by fitting the [FORMULA OMISSION] invariant mass distributions. The differential production cross sections are measured as a function of the transverse momentum [FORMULA OMISSION] and rapidity [FORMULA OMISSION], over the ranges [FORMULA OMISSION] GeV/c for [FORMULA OMISSION], [FORMULA OMISSION] GeV/c for all other resonances and for [FORMULA OMISSION]. The measured cross sections integrated over [FORMULA OMISSION] and [FORMULA OMISSION], and assuming unpolarized quarkonia, are: [FORMULA OMISSION] [FORMULA OMISSION]b, [FORMULA OMISSION] [FORMULA OMISSION]b, [FORMULA OMISSION] nb and [FORMULA OMISSION] nb, where the first uncertainty is statistical and the second one is systematic. The results are compared to measurements performed by other LHC experiments and to theoretical models.</P>

Multi-strange baryon production in pp collisions at s=7 TeV with ALICE

ALICE Collaboration,Abelev, B.,Adam, J.,Adamova, D.,Adare, A.M.,Aggarwal, M.M.,Aglieri Rinella, G.,Agocs, A.G.,Agostinelli, A.,Aguilar Salazar, S.,Ahammed, Z.,Ahmad, N.,Ahmad Masoodi, A.,Ahn, S.U.,Aki North-Holland Pub. Co 2012 Physics letters: B Vol.712 No.4

A measurement of the multi-strange Ξ<SUP>-</SUP> and Ω<SUP>-</SUP> baryons and their antiparticles by the ALICE experiment at the CERN Large Hadron Collider (LHC) is presented for inelastic proton-proton collisions at a centre-of-mass energy of 7 TeV. The transverse momentum (p<SUB>T</SUB>) distributions were studied at mid-rapidity (|y|<0.5) in the range of 0.6<p<SUB>T</SUB><8.5 GeV/c for Ξ<SUP>-</SUP> and Ξ@?<SUP>+</SUP> baryons, and in the range of 0.8<p<SUB>T</SUB><5 GeV/c for Ω<SUP>-</SUP> and Ω@?<SUP>+</SUP>. Baryons and antibaryons were measured as separate particles and we find that the baryon to antibaryon ratio of both particle species is consistent with unity over the entire range of the measurement. The statistical precision of the current data has allowed us to measure a difference between the mean p<SUB>T</SUB> of Ξ<SUP>-</SUP> (Ξ@?<SUP>+</SUP>) and Ω<SUP>-</SUP> (Ω@?<SUP>+</SUP>). Particle yields, mean p<SUB>T</SUB>, and the spectra in the intermediate p<SUB>T</SUB> range are not well described by the PYTHIA Perugia 2011 tune Monte Carlo event generator, which has been tuned to reproduce the early LHC data. The discrepancy is largest for Ω<SUP>-</SUP> (Ω@?<SUP>+</SUP>). This PYTHIA tune approaches the p<SUB>T</SUB> spectra of Ξ<SUP>-</SUP> and Ξ@?<SUP>+</SUP> baryons below p<SUB>T</SUB><0.85 GeV/c and describes the Ξ<SUP>-</SUP> and Ξ@?<SUP>+</SUP> spectra above p<SUB>T</SUB>>6.0 GeV/c. We also illustrate the difference between the experimental data and model by comparing the corresponding ratios of (Ω<SUP>-</SUP>+Ω@?<SUP>+</SUP>)/(Ξ<SUP>-</SUP>+Ξ@?<SUP>+</SUP>) as a function of transverse mass.

Centrality dependence of charged particle production at large transverse momentum in Pb-Pb collisions at s_NN=2.76 TeV

ALICE Collaboration,Abelev, B.,Adam, J.,Adamova, D.,Adare, A.M.,Aggarwal, M.M.,Aglieri Rinella, G.,Agocs, A.G.,Agostinelli, A.,Aguilar Salazar, S.,Ahammed, Z.,Ahmad, N.,Ahmad Masoodi, A.,Ahn, S.A.,Ahn North-Holland Pub. Co 2013 Physics letters: B Vol.720 No.1

<P>The inclusive transverse momentum (p(T)) distributions of primary charged particles are measured in the pseudo-rapidity range vertical bar eta vertical bar <0.8 as a function of event centrality in Pb-Pb collisions at root S-NN = 2.76 TeV with ALICE at the LHC. The data are presented in the p(T) range 0.15 < p(T) <50 GeV/c for nine centrality intervals from 70-80% to 0-5%. The results in Pb-Pb are presented in terms of the nuclear modification factor R-AA using a pp reference spectrum measured at the same collision energy. We observe that the suppression of high-p(T) particles strongly depends on event centrality. The yield is most suppressed in central collisions (0-5%) with R-AA approximate to 0.13 at p(T) = 6-7 GeV/c. Above p(T) = 7 GeV/c, there is a significant rise in the nuclear modification factor, which reaches R-AA approximate to 0.4 for p(T) > 30 GeV/c. In peripheral collisions (70-80%), only moderate suppression (R-AA approximate to 0.6-0.7) and a weak p(T) dependence is observed. The measured nuclear modification factors are compared to other measurements and model calculations. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.</P>