• Title/Summary/Keyword: Ahmed Body

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Hydrodynamic analysis of a floating body with an open chamber using a 2D fully nonlinear numerical wave tank

  • Uzair, Ahmed Syed;Koo, Weon-Cheol
    • International Journal of Naval Architecture and Ocean Engineering
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    • v.4 no.3
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    • pp.281-290
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    • 2012
  • Hydrodynamic analysis of a surface-piercing body with an open chamber was performed with incident regular waves and forced-heaving body motions. The floating body was simulated in the time domain using a 2D fully nonlinear numerical wave tank (NWT) technique based on potential theory. This paper focuses on the hydrodynamic behavior of the free surfaces inside the chamber for various input conditions, including a two-input system: both incident wave profiles and forced body velocities were implemented in order to calculate the maximum surface elevations for the respective inputs and evaluate their interactions. An appropriate equivalent linear or quadratic viscous damping coefficient, which was selected from experimental data, was employed on the free surface boundary inside the chamber to account for the viscous energy loss on the system. Then a comprehensive parametric study was performed to investigate the nonlinear behavior of the wave-body interaction.

Short Communication Antinociceptive activity of Avicennia officinalis

  • Shahid, IZ;Karmakar, D;Sadhu, SK;Ahmed, F
    • Advances in Traditional Medicine
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    • v.7 no.1
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    • pp.100-102
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    • 2007
  • The crude ethanol extract of leaves of Avicennia officinalis Linn. (Family: Avicenniaceae) was screened for its antinociceptive activity. The extract produced significant writhing inhibition in acetic acid-induced writhing in mice at the oral dose of 250 and 500 mg/kg body weight (P < 0.001) comparable to the standard drug diclofenac sodium at the dose of 25 mg/kg of body weight. The result tends to suggest the antinociceptive activity of the extract.

Antinociceptive and antidiarrhoeal activities of Sonneratia caseolaris

  • Ahmed, F;Baksi, B;Sadhu, SK;Shahid, IZ
    • Advances in Traditional Medicine
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    • v.7 no.3
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    • pp.274-279
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    • 2007
  • The crude ethanol extract of leaves of Sonneratia caseolaris Linn. (Sonneratiaceae) was screened for its antinociceptive and antidiarrhoeal activities. The extract produced significant writhing inhibition in acetic acid induced writhing in mice at dose of 250 and 500 mg/kg body weight (P<0.01) comparable to the standard drug diclofenac sodium at the dose of 25 mg/kg of body weight. When tested for its antidiarrhoeal effects on castor oil induced diarrhea in mice, it increased mean latent period and decreased the frequency of defecation significantly at the dose of 500 mg/kg body weight (P < 0.05) comparable to the standard drug loperamide at the dose of 50 mg/kg of body weight. The overall results tend to suggest the antinociceptive and antidiarrhoeal activities of the extract.

Antinociceptive and antidiarrhoeal activities of Bruguiera gymnorrhiza

  • Ahmed, F;Shahid, IZ;Gain, NC;Reza, MSH;Sadhu, SK
    • Advances in Traditional Medicine
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    • v.7 no.3
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    • pp.280-285
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    • 2007
  • The methanol extract of leaves of Bruguiera gymnorrhiza (L.) Lam. (Rhizophoraceae) was screened for its antinociceptive and antidiarrhoeal activities. The extract produced significant inhibition in acetic acid-induced writhing in mice at dose of 250 and 500 mg/kg body weight (P < 0.001), comparable to the standard drug diclofenac sodium at the dose of 25 mg/kg of body weight (P < 0.001). When tested for its antidiarrhoeal effects on castor oil-induced diarrhea in mice, it increased mean latent period (P < 0.02) and decreased the frequency of defecation (P < 0.01) significantly at the dose of 500 mg/kg body weight, comparable to the standard drug loperamide at the dose of 50 mg/kg of body weight. The overall results tend to suggest the antinociceptive and antidiarrhoeal activities of the extract.

Optimal Design for the Low Drag Tail Shape of the MIRA Model (MIRA Model 후미의 저저항 최적 설계)

  • Hur Nahmkeon;Kim Wook
    • Journal of computational fluids engineering
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    • v.4 no.1
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    • pp.34-40
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    • 1999
  • Drag reduction on vehicles are the main concern for the body shape designers in order to lower the fuel consumption rate and to aid the driving stability. The drag of bluff bodies like transportation vehicles is mostly pressure drag due to the flow separation, which can be minimized by controlling the location and size of the separation bubble. In the present study, the TURBO-3D code is incorporated with optimal algorithm based on analytical approximation method to obtain an optimal afterbody shape of the MIRA Model corresponding to the lowest drag coefficient. For this purpose three mutually independent afterbody angles are chosen as design variables, while the drag coefficient is chosen as an objective function. It is demonstrated in the present study that an optimal body shape having the lowest drag coefficient which is about 6% lower than that of the original shape has been successfully obtained within number of iterations of tile optimal design loop.

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Gluteal Region Reshaping of Massive Weight Loss Patients-A Decision-Making Strategy

  • Mahgoub, Mohamed Ali;Zeina, Ahmed Mahmoud;El-Din, Ahmed Mohamed Bahaa;El-Sabbagh, Ahmed Hassan;Bassetto, Franco;Vindigni, Vincenzo
    • Archives of Plastic Surgery
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    • v.49 no.3
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    • pp.289-295
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    • 2022
  • Background Massive weight loss (MWL) is a very common presentation that you may face as a plastic surgeon. Each patient has his own individual criteria, so, you should work according to a well-organized plan, especially when such cases have concerns about their gluteal area contour that were neglected before by many surgeons. A decision-making strategy was used to give a personalized treatment for targeting gluteal region reshaping of MWL patients. Methods This study considered all patients with MWL subjected to buttock reshaping. There was no randomization in treatment; there was a case-by-case assessment. We analyzed the features of the buttocks, the type of surgery performed, the outcomes, and the complications. Results Fifty two patients were included (41 females and 11 males), ages ranged between 21 and 66 years. Demographic data, preoperative body mass index (BMI), duration of surgery, type of surgery, and postoperative complications were collected. Statistically significant improvements were observed in gluteal ptosis and patient satisfaction grades. Conclusion Aesthetic improvement of the buttocks involves either augmentation or contouring that may be obtained by liposculpture, surgical lifting, or combination. Patients with MWL have high expectations and are often treated with multiple procedures. Thus, an easy strategic approach personalized on each patient to treat multiple adjacent areas in one operation is necessary. Adipose tissue distribution, gluteal skin status, and BMI were the main factors that can forcefully affect our plan to guarantee reduction of unpleasant results and complications and improve patient satisfaction.

Occurrence of Leaf Spot Disease Caused by Alternaria crassa (Sacc.) Rands on Jimson Weed and Potential Additional Host Plants in Algeria

  • Bessadat, Nabahat;Hamon, Bruno;Bataille-Simoneau, Nelly;Chateau, Corentin;Mabrouk, Kihal;Simoneau, Philippe
    • The Plant Pathology Journal
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    • v.36 no.2
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    • pp.179-184
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    • 2020
  • A leaf spot pathogen Alternaria sp. was recovered from jimson weed, tomato, parsley, and coriander collected during surveys of blight diseases on Solanaceae and Apiaceae in Algeria. This species produced large conidial body generating long apical beaks that tapered gradually from a wide base to a narrow tip and short conidiophores originating directly from the agar surface. This species exhibited morphological traits similar to that reported for Alternaria crassa. The identification of seven strains from different hosts was confirmed by sequence analyses at the glyceraldehyde-3-phosphate dehydrogenase, RNA polymerase second largest subunit, and translation elongation factor 1-alpha loci. Further the pathogen was evaluated on jimson weed, coriander, parsley, and tomato plants, and this fungus was able to cause necrotic lesions on all inoculated plants. A. crassa is reported for the first time as a new species of the Algerian mycoflora and as a new potential pathogen for cultivated hosts.

Antinociceptive, antidiarrhoeal and cytotoxic activity of Aegiceras corniculatum

  • Ahmed, F;Mamun, AH AI;Shahid, IZ;Rahman, AA;Sadhu, SK
    • Advances in Traditional Medicine
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    • v.7 no.2
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    • pp.191-196
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    • 2007
  • The ethanol extract of leaves of the mangrove Aegiceras corniculatum Blanco (Myrsinaceae) was screened for its antinociceptive, antidiarrhoeal and cytotoxic activities. The extract produced significant writhing inhibition in acetic acid-induced writhing in mice at the oral dose of 250 and 500 mg/kg body weight (P < 0.001), which was comparable to the standard drug diclofenac sodium at the dose of 25 mg/kg of body weight. When tested for its antidiarrhoeal effects on castor oil induced diarrhoea in mice, it increased mean latent period and decreased the frequency of defecation significantly at the oral dose of 500 mg/kg body weight (P<0.05; P<0.01) comparable to the standard drug loperamide at the dose of 50 mg/kg of body weight. Moreover, when tested for toxicity using brine shrimp, the extract showed potent activity against the brine shrimp Artemia salina ($LC_{50}$ 10 mg/ml). The overall results tend to suggest the antinociceptive, antidiarrhoeal and cytotoxic activities of the extract.

Analgesic and antidiarrhoeal activities of Treama orientalis Linn. in mice

  • Uddin, Sarder Nasir;Uddin, Khan Mohammad Ahsan;Ahmed, Firoz
    • Advances in Traditional Medicine
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    • v.8 no.2
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    • pp.187-191
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    • 2008
  • Trema orientalis Linn. is commonly grown in many parts of Bangladesh. Its leaves have been used for analgesic and anti-diarrhoeal activity in traditional medicine. This study evaluates the potential analgesic and anti-diarrhoeal activity of methanol and aqueous extracts of leaves in experimental acetic acid induced writhing and castor oil induced diarrhoea in mice. The aqueous extract of leaves showed significant (P < 0.001) analgesic effect in acetic acid induced writhing in mice at a dose of 500 mg/kg body weight In castor oil induced antidiarrhoeal screening both extract increased latent period (P < 0.025) and decrease the number of stool (P < 0.025) at the dose of 500 mg/kg body weight comparable with that of the standard drug loperamide. The results provide a support for the use of this plant in traditional medicine and suggest its further investigation.

A theoretical approach in 2d-space with applications of the periodic wave solutions in the elastic body

  • Ramady, Ahmed;Mahmoud, S.R.;Atia, H.A.
    • Membrane and Water Treatment
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    • v.11 no.4
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    • pp.295-302
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    • 2020
  • In this paper, theoretical approach with applications of the periodic wave solutions in an elastic material is applied by study the effect of initial stress, and rotation, on the radial displacement and the corresponding stresses in non-homogeneous orthotropic material. An Analytical solution for the elastodynamic equation has obtained concerning the component of displacement. The variations of stresses and displacements have shown graphically. Comparisons with previously published results in the absence of initial stress, rotation and non-homogeneity have made. Finally, numerical results have given and illustrated graphically for each case considered.