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Search Results: 1 - 10 of 486 matches for " Munir Bazzi "
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Editorial of the Open Journal on Modelling and Simulation  [PDF]
Alessandro Bazzi
Open Journal of Modelling and Simulation (OJMSi) , 2013, DOI: 10.4236/ojmsi.2013.13004
Abstract: Editorial of the Open Journal on Modelling and Simulation
Blunt traumatic diaphragmatic rupture Rotura diafragmática no trauma abdominal fechado
Antonio Carlos Nogueira,Munir Bazzi,Francisco Garcia Soriano,Haydée Jord?o
Autopsy and Case Reports , 2011,
Abstract: Traumatic injury of the diaphragm ranges from 0.6 to 1.2% and rise up to 5% among patients who were victims of blunt trauma and underwent laparotomy. Clinical suspicion associated with radiological assessment contributes to early diagnosis. Isolated diaphragmatic injury has a good prognosis. Generally worse outcomes are associated with other trauma injuries. Bilateral and right diaphragmatic lesions have worse prognosis. Multi detector computed tomography (MDCT) scan of the chest and abdomen provides better diagnostic accuracy using the possibility of image multiplanar reconstruction. Surgical repair via laparotomy and/ or thoracotomy in the acute phase of the injury has a better outcome and avoids chronic complications of diaphragmatic hernia. The authors present the case of a young male patient, victim of blunt abdominal trauma due to motor vehicle accident with rupture of the diaphragm, spleen and kidney injuries. The diagnosis was made by computed tomography of the thorax and abdomen and was confirmed during laparotomy. A incidência de les o traumática do diafragma, relatada na literatura, varia de 0,6 a 1,2% dentre os pacientes vítimas de traumas, elevando-se para 5% nos pacientes com trauma fechado submetidos a laparotomia. A suspeita clínica associada à avalia o radiológica contribui para o diagnóstico precoce. A les o diafragmática isoladamente é de bom prognóstico. Assim, em geral, as les es associadas à rotura diafragmática s o os preditores da pior evolu o do paciente. As les es do diafragma direito e as les es bilaterais apresentam pior prognóstico. A tomografia computadorizada com multidetectores (MDCT) de tórax oferece a possibilidade de reconstru o multiplanar permitindo melhor acurácia no diagnóstico. A corre o cirúrgica por meio de laparotomia e/ou toracotomia na fase aguda do trauma apresenta boa evolu o e evita as complica es cr nicas da hérnia diafragmática. Os autores apresentam o caso de um paciente jovem do sexo masculino, vítima de trauma abdominal fechado por acidente automobilístico que apresentou rotura do diafragma, les o esplênica e renal. O diagnóstico foi feito através da tomografia computadorizada de tórax e abdome e confirmada durante laparotomia exploradora.
Evaluation of Non-Genetic Factors Affecting Birth Weight in Sistani Cattle
Hossein Bazzi
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.3095.3099
Abstract: The study under taken investigates the effects of some non-genetic factors (Sex of calf, year and season of birth, parity and calving difficulty) affecting on birth weight in Sistani cattle. Data were collected on 932 (466 males and 466 females) Sistani calves from the progenies born in the Sistani Cattle Research station of Sistani and Baluchistan province in Iran during the period from 1989-2007. Analysis of variance indicated that the effects of sex of calf, year and season of birth, parity and calving difficulty with gestation length as a covariate on birth weight were significant (p<0.01). The least square mean for birth weight of Sistani calves was found to be 24.143±0.509 kg. The effect of calf sex on birth weight was highly significant (p<0.01). Male calves were 1.935 kg heavier at birth than females. Birth weights of male calves were 7-8% heavier than female calves. The winter born calves had the highest (25.168 kg) birth weight. Calves born in early parities were lighter in weight than those born to late-parity dams. Difference between the means for maximum and minimum years is 6.023 kg. Sistani cattle difficult calving occurred in 1.2%. First parity cows exhibited more frequent calving difficulty whereas among other parities there were no statistically significant differences.
Weight distribution of cosets of small codes with good dual properties
Louay Bazzi
Mathematics , 2014,
Abstract: The {\em bilateral minimum distance} of a binary linear code is the maximum $d$ such that all nonzero codewords have weights between $d$ and $n-d$. Let $Q\subset \{0,1\}^n$ be a binary linear code whose dual has bilateral minimum distance at least $d$, where $d$ is odd. Roughly speaking, we show that the average $L_\infty$-distance -- and consequently the $L_1$-distance -- between the weight distribution of a random cosets of $Q$ and the binomial distribution decays quickly as the bilateral minimum distance $d$ of the dual of $Q$ increases. For $d = \Theta(1)$, it decays like $n^{-\Theta(d)}$. On the other $d=\Theta(n)$ extreme, it decays like and $e^{-\Theta(d)}$. It follows that, almost all cosets of $Q$ have weight distributions very close to the to the binomial distribution. In particular, we establish the following bounds. If the dual of $Q$ has bilateral minimum distance at least $d=2t+1$, where $t\geq 1$ is an integer, then the average $L_\infty$-distance is at most $\min\{\left(e\ln{\frac{n}{2t}}\right)^{t}\left(\frac{2t}{n}\right)^{\frac{t}{2} }, \sqrt{2} e^{-\frac{t}{10}}\}$. For the average $L_1$-distance, we conclude the bound $\min\{(2t+1)\left(e\ln{\frac{n}{2t}}\right)^{t} \left(\frac{2t}{n}\right)^{\frac{t}{2}-1},\sqrt{2}(n+1)e^{-\frac{t}{10}}\}$, which gives nontrivial results for $t\geq 3$. We given applications to the weight distribution of cosets of extended Hadamard codes and extended dual BCH codes. Our argument is based on Fourier analysis, linear programming, and polynomial approximation techniques.
Mechanical and Thermal Properties of Chemically Modified Epoxy Resin  [PDF]
Sumeera Ikram, Arshad Munir
Open Journal of Synthesis Theory and Applications (OJSTA) , 2012, DOI: 10.4236/ojsta.2012.13007
Abstract: Diglycidyl ether of bisphenol-A (DGEBA), having number average molecular weight (Mn) 375, was modified by incorporating the hydroxyl terminated polybutadiene (HTPB) based prepolymer using isophorone diisocyanate as a coupling agent. To increase the compatibility between the epoxy resin and HTPB part, polar groups were introduced in the later to achieve physical and chemical interactions between the two phases. The finally modified DGEBA system was cured with amine based hardener. FTIR and 1H-NMR were used to monitor the whole modification procedure. The rubber particles size and distribution was monitored as a function of HTPB contents in the resin system using scanning electron microscopy (SEM). The mechanical, thermal and thermo-mechanical properties have shown that the tensile strength, toughness, ductility and impact strength of the modified cured system have been successfully increased at some optimum HTPB contents without affecting the inherent thermal and thermo-mechanical stability associated with DGEBA resin system. Some of the mechanical properties like flexural modulus, tensile modulus and compressive strength decreased with increasing rubber contents.
The Effects of Some Environmental Factors Affecting on the Weaning Weight of Sistani Beef Calves
Hossein Bazzi,Mahmoud Ghazaghi
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.2240.2243
Abstract: This experiment analyses the growth of calves of the conservation nucleus for Sistani cattle. Data in this study were obtained from the Sistani cattle Research Station of Sistan and Baluchistan province in Iran. Weaning weights data was available on 372 Sistani beef calves (198 male and 174 female), born between 2003 and 2007. The effects of sire, age of dam, year/season of birth, sex of calf and birth weight was used as a covariate on the 205 days weaning weight which was computed by analysis of variance (GLM). Overall mean of the 205 days weaning weight of all calves was 127.25 kg. According to the age of the dam, the weaning weight increased up to 7 years (with the exception of 6 years) and after the maximum (137.6 kg) decreased. The minimum values were found in the group of 8 years old (97.7 kg) cows. With respect to birth year, the highest weaning weight (141.1 kg) was observed in 2007 and the lowest (101.66 kg) in 2003. The year effect varied but the trend observed is that of an increase in weaning weight with time. For birth season, Spring, Summer, Autumn and Winter, the 205 days weaning weight was 112.2, 115.3, 123.2 and 131 kg, respectively. Male calves reached 121.6 kg and female calves 119.2 kg mean value of the adjusted weaning weight.
Effects of Environmental Factors on Body Weight of Sistani Goat at Different Ages
Hossein Bazzi,Mahmoud Ghazaghi
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.2819.2823
Abstract: The objective of this study was to evaluate the effect of some non-genetic factors on pre-weaning and post-weaning growth in Sistani goat kids. Data from 81 records (36 males and 45 females) were analyzed. The data were collected from the Institute of Research Domesticated Animals, Zabol University in Sistan and Baluchestan province and Iran in 2008. The effects of dam weight after kidding, sex, birth type and time of weaning on the weights at birth, weaning, 6, 9 and 12 months of age and average pre and post weaning daily gain were studied. The average birth weight of male kids was about 3% higher than female kids. The overall means of Body Weight at birth (BW), Weaning 3 (WW3), Weaning 4 (WW4), 6 (W6), 9 (W9) and 12 (W12) months of age were 1.915, 7.796, 9.900, 15.597, 26.253 and 34.2 kg, respectively. Birth weight averaged 2.398, 2.355, 1.858 and 1.865 kg for single males and females, twin males and females, respectively. Kids had a faster growth rate from 6-9 months with daily gain 118.4 (g day-1) that the average daily gain in kids decreased with the age increase from 9-12 months of age. Average pre-weaning daily gain of female was also higher than male but there was no significant difference observed in pre-weaning gain heavy dam produced heavy kid (r = 0.319) but later weight had no relation with dam weight. Male kids in comparison with female kids and single born kids in comparison with twin born kids had higher birth weight and weaning weight.
The Effects of Some Environmental Factors Affecting on the Weaning Weight of Sistani Beef Calves
Hossein Bazzi,Masoud Alipanah
Journal of Animal and Veterinary Advances , 2012, DOI: 10.3923/javaa.2011.1480.1483
Abstract: This experiment analyses the growth of calves of the conservation nucleus for Sistani cattle. Data in this study were obtained from the Sistani cattle Research station of Sistan and Baluchistan province in Iran. Weaning weights data was available on 372 Sistani beef calves (198 male and 174 female), born between 2003 and 2007. The effects of sire, age of dam, year/season of birth, sex of calf and birth weight was used as a covariate on the 205 days weaning weight which was computed by analysis of variance (GLM). Overall mean of the 205 days weaning weight of all calves was 127.25 kg. According to the age of the dam, the weaning weight increased up to 7 years (with the exception of 6 years) and after the maximum (137.6 kg) decreased. The minimum values were found in the group of 8 years old (97.7 kg) cows. With respect to birth year, the highest weaning weight (141.1 kg) was observed in 2007 and the lowest (101.66 kg) in 2003. The year effect varied but the trend observed is that of an increase in weaning weight with time. For birth season, spring, summer, autumn and winter the 205 days weaning weight was 112.2, 115.3, 123.2 and 131 kg, respectively. Male calves reached 121.6 kg and female calves 119.2 kg mean value of the adjusted weaning weight.
Impact of redundant checks on the LP decoding thresholds of LDPC codes
Louay Bazzi,Hani Audah
Mathematics , 2014,
Abstract: Feldman et al.(2005) asked whether the performance of the LP decoder can be improved by adding redundant parity checks to tighten the LP relaxation. We prove that for LDPC codes, even if we include all redundant checks, asymptotically there is no gain in the LP decoder threshold on the BSC under certain conditions on the base Tanner graph. First, we show that if the graph has bounded check-degree and satisfies a condition which we call asymptotic strength, then including high degree redundant checks in the LP does not significantly improve the threshold in the following sense: for each constant delta>0, there is a constant k>0 such that the threshold of the LP decoder containing all redundant checks of degree at most k improves by at most delta upon adding to the LP all redundant checks of degree larger than k. We conclude that if the graph satisfies a rigidity condition, then including all redundant checks does not improve the threshold of the base LP. We call the graph asymptotically strong if the LP decoder corrects a constant fraction of errors even if the LLRs of the correct variables are arbitrarily small. By building on the work of Feldman et al.(2007) and Viderman(2013), we show that asymptotic strength follows from sufficiently large expansion. We also give a geometric interpretation of asymptotic strength in terms pseudocodewords. We call the graph rigid if the minimum weight of a sum of check nodes involving a cycle tends to infinity as the block length tends to infinity. Under the assumptions that the graph girth is logarithmic and the minimum check degree is at least 3, rigidity is equivalent to the nondegeneracy property that adding at least logarithmically many checks does not give a constant weight check. We argue that nondegeneracy is a typical property of random check-regular graphs.
Effect of Dye Structure on the Photodegradation Kinetic Using TiO2 Nanoparticles  [PDF]
Hawraa Ayoub, Mounir Kassir, Mohammad Raad, Houssein Bazzi, Akram Hijazi
Journal of Materials Science and Chemical Engineering (MSCE) , 2017, DOI: 10.4236/msce.2017.56004
Abstract: In this study the effect of pH, adsorption behavior and the chemical struc-tures of two dyes (Methyl Orange and Bromothymol Blue) on the photo-degradation rate constant, was investigated. Adsorption isotherm shows that the adsorption amount of dyes on TiO2 surface is highly related to the pH of the solution and to the pKa of each dye. In acidic medium the adsorption percentage of Methyl Orange on TiO2 surface was 76% facing 5% for Bromothymol Blue. The kinetic study shows compatibility between the degradation rate constant and the adsorption percentage on the surface. In basic medium the adsorption percentage of Methyl orange and Bromothymol Blue is similar while the degradation rate of Methyl orange is two times faster than that of Bromothymol Blue which reveals the role of chemical structure in the photodegradation rate.
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