Effect of Adding Physiotherapy Program to the Conservative Medical Therapy on Quality of Life and Pain in Chronic Rhinosinusitis Patients

Fouda Khaled Z.,Eladl Hadaya M.,Ameer Mariam A.,Allam Nesma M. 대한재활의학회 2023 Annals of Rehabilitation Medicine Vol.47 No.5

Objective: To assess the effectiveness of combining physiotherapy techniques with conservative medical treatment in chronic rhinosinusitis (CRS) patients. Methods: Sixty-eight volunteers with CRS were randomly assigned. Group A received only traditional medical treatment, whereas group B received a physiotherapy program that included pulsed ultrasound therapy, sinus manual drainage techniques, and self-sinus massage technique in addition to traditional medical treatment. Interventions were applied 3 sessions a week for 4 weeks. The rhinosinusitis disability index (RSDI) served as the main outcome indicator for assessing the quality of life, and the secondary outcome measure was the pressure pain threshold (PPT) using a pressure algometer. Results: Wilcoxon signed rank test revealed a significant reduction (p<0.001) in total RSDI values from 71.08±1.13 pretest to 47.14±1.15 posttest for group A, while it decreased from 70.64±1.20 pretreatment to 31.76±1.04 posttreatment for group B; furthermore, Mann–Whitney U-test revealed a significant difference (p<0.001) in total RSDI values between both groups when comparing the change of the pre-post data values, it was 23.94±0.95 for group A and 38.88±0.67 for group B. The independent t-test revealed a highly statistically significant increase (p<0.001) in the PPT values in the experimental group compared to the control group.Conclusion: The physiotherapy program which included pulsed ultrasound therapy, sinus manual drainage technique, and self-sinus massage technique in conjunction with conventional medical treatment was more beneficial for enhancing the quality of life and PPT than traditional medical treatment alone in CRS patients.

Biotechnological application of plant growth-promoting endophytic bacteria isolated from halophytic plants to ameliorate salinity tolerance of Vicia faba L.

Mahgoub Hany A. M.,Fouda Amr,Eid Ahmed M.,Ewais Emad El-Din,Hassan Saad El-Din 한국식물생명공학회 2021 Plant biotechnology reports Vol.15 No.6

Salinity is a major problem affecting crop production all over the world. A wide range of adaptation strategies are required to overcome this problem. Endophytic bacteria can build a symbiotic association with their host to improve host plant salt tolerance. In this study, eighteen bacterial endophyte strains were isolated from two native halophytic plants Arthrocnemum macrostachyum and Spergularia marina, and identified as Bacillus, Brevibacillus, Agrobacterium, and Paenibacillus. These endophytic strains exhibit plant growth-promoting activities including phosphate solubilizing, ammonia production, bio- control of phytopathogen, extracellular enzymatic activities, and indole-3-acetic acid production under normal and salinity stress. A pot experiment was conducted under field conditions to alleviate the harmful effects of soil salinity on bean (Vicia faba L.) by inoculating their seeds with the most potent bacterial isolates Bacillus subtilis (AR5) and Bacillus thuringiensis (BR1). Salinity treatments induced a significant decrease in both growth parameters and metabolic activities, while the activ- ity of antioxidant enzymes and proline content was significantly increased. However, salinity stress induced higher contents of Na+ and decreased contents of N+, P3+, K+, Ca2+, Mg2+, and K+:Na+, it was found that treatment with B. subtilis (AR5) and B. thuringiensis (BR1) individually or in a combination mitigated the effect of salt stress and improved the plant height, shoot dry weights, proline contents, enzymes activities as well enhanced the accumulation of mineral nutrients in shoot plants. Our results concluded that treatment with co-inoculation of B. subtilis (AR5) and B. thuringiensis (BR1) exerted the greatest effect in alleviating the harmful effect of soil salinity stress and can be used as a suitable bio-approach to reclaim salinity-stressed soils.

The Inhibition of C-steel Corrosion in H₃PO₄ Solution by Some Furfural Hydrazone Derivatives

Fouda, A.S.,Badr, G.E.,El-Haddad, M.N. Korean Chemical Society 2008 대한화학회지 Vol.52 No.2

H3SO4(M: 몰농도) 용액에서 탄소강의 부식방지제로 Furfural hydrazone 유도체의 효과를 질량손실법 및 정전류극성법을 사용해 연구하였다. 이들 유도체 존재하에서 탄소강의 부식속도가 급격히 감소함을 관찰하였다. 이 연구로부터 부식방지효율은 부식방지제 농도가 증가함에 따라 증가하였고 I와 SCN을 첨가하면 부식방지효율은 더욱 증가되었다. 질량손실법을 사용해 5×10-6 M의 유도체가 있을 때와 없을 때 30-60oC 사이에서 탄소강 부식에 미치는 온도 효과를 보았다. 부식과정에 대한 활성화에너지(Ea*)와 다른 열역학적 변수들을 계산하였고 이들에 대해 논의하였다. 정전류극성법을 통해 유도체들이 혼합형 방지제로 작용함을 알았고 외부전류를 흘려주었을 때 음극은 더욱 분극되었다. 3M H3SO4 용액에서 탄소강 표면에 이들 유도체들의 흡착은 Frumkin의 흡착등온을 따랐다. 이들 유도체들의 화학구조를 통해 부식방지 메커니즘을 설명하였다. effect of some furfural hydrazone derivatives (I -V) as corrosion inhibitors for C-steel in 3M H3PO4 solution in which M indicates mol/l has been studied using weight-loss and galvanostatic polarization techniques. A significant decrease in the corrosion rate of C-steel was observed in the presence of the investigated compounds. This study revealed that, the inhibition efficiency increases with increasing the inhibitor concentration, and the addition of iodide and thiocynate ions enhances it to a considerable extent. The effect of temperature on the corrosion behavior of C-steel was studied in the range from 30-60oC with and without 510-6 M investigated compounds using weight-loss method. Apparent activation corrosion energy (Ea*) and other thermodynamic parameters for the corrosion process were calculated and discussed. The polarization measurements show that the investigated compounds act as mixed-type inhibitors, but the cathode is more polarized when an external current was applied. The adsorption of these compounds on the surface of C-steel in 3M H3PO4 obeys Frumkins adsorption isotherm. The mechanism of inhibition was discussed in the light of the chemical structure of the investigated compounds.

Role of Some Benzohydrazide Derivatives as Corrosion Inhibitors for Carbon Steel in HCl Solution

Fouda, A.S.,Mohamed, M.T.,Soltan, M.R. The Korean Electrochemical Society 2013 Journal of electrochemical science and technology Vol.4 No.2

Corrosion inhibition of carbon steel in 2M HCl by some benzohydrazide derivatives (I-III) was studied using weight loss, potentiodynamic polarization, and electrochemical impedance spectroscopy (EIS) techniques at $30^{\circ}C$. Polarization studies showed that all the investigated compounds are of mixed type inhibitors. Temperature studies revealed a decrease in efficiency with rise in temperature and corrosion activation energies increased in the presence of the hydrazide derivatives, probably implying that physical adsorption of cationic species may be responsible for the observed inhibition behavior. Electrochemical impedance studies showed that the presence of benzohydrazide derivatives decreases the double layer capacitance and increases the charge transfer resistance. The adsorption of these compounds on carbon steel surface was found to obey Temkin's adsorption isotherm. Synergistic effects increased the inhibition efficiency in the presence of halide additives namely KI and KBr. An inhibition mechanism was proposed in terms of strongly adsorption of inhibitor molecules on carbon steel surface.

Effect of β-Blocker Inhibitors on Aluminum Corrosion

Fouda, A. S.,El-Ewady, G. Y.,Shalabi, K. Korean Chemical Society 2011 대한화학회지 Vol.55 No.2

베타 차단제 억제제(atenolol, propranolol, timolol and nadolol)의 존재와 부존 하에서 0.1M HCl 용액에 담긴 알루미늄의 부식작용을 연구하였다. 이 연구에 무게감량, 변전위 편극, 전기화학 임피던스 분석법이 사용되었다. 억제 효과는 억제제의 농도 증가에 따라 증가하였으며, 온도가 증가함에 따라 감소하였다. 모든 억제제들은 Frumkin 등온을 따르는 알루미늄 표면에 흡착되었다. 부식반응은 전하이동과정에 의해 조절됨을 발견하였다. 억제 효과 측정을 위해 사용된 실험방법 들에 대해 조사한 결과 모두 억제효과가 우수하였다. Corrosion of aluminum in 0.1 M HCl solution in the absence and presence of ${\beta}$-blocker inhibitors (atenolol, propranolol, timolol and nadolol) was investigated using weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) techniques. The inhibition efficiency increased with inhibitor concentration and decreased with rise of temperature. Potentiodynamic polarization curves revealed that they acted as cathodic inhibitors. Some thermodynamic parameters were calculated and discussed. All inhibitors were adsorbed on Al surface obeying Frumkin isotherm. All EIS tests exhibited one capacitive loop which indicates that the corrosion reaction is controlled by charge transfer process. The inhibition efficiencies of all test methods were in good agreement.

Lornoxicam & Tenoxicam Drugs as Green Corrosion Inhibitors for Carbon Steel in 1 M H₂SO₄ Solution

Fouda, A.S.,El-Defrawy, A.M.,El-Sherbeni, M.W. The Korean Electrochemical Society 2013 Journal of electrochemical science and technology Vol.4 No.2

Inhibition performance of Lornoxicam & Tenoxicam against corrosion of carbon steel in 1M $H_2SO_4$ solutions was investigated by weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements. The inhibition efficiency increased with increasing inhibitor's concentration, but decreased with increase in temperature. Potentiodynamic polarization curves showed that, the inhibitors were of mixed type. The apparent activation energy ($E^*_a$) and other thermodynamic parameters for the corrosion process have also been calculated and discussed. The inhibition of carbon steel corrosion is due to the adsorption of the inhibitor molecules on the surface, which follows Temkin adsorption isotherm. The mechanism of inhibition was discussed in the light of the chemical structure of the undertaken inhibitors.

Study on Corrosion Inhibition from Aspect of Quantum Chemistry

Fouda, A.S.,Abu-Elnader, H.M.,Soliman, M.S. Korean Chemical Society 1986 Bulletin of the Korean Chemical Society Vol.7 No.2

Calculated ionization potential, electron affinity, electron density and bond order of some thiophene derivatives have been obtained and correlated with the inhibition of corrosion produced by these substances as evaluated by polarization curves. It is apparent that such quantities as the electron density or ionization potential play an important role. The calculation was carried out by the Extended Huckel method for the series of substituted thiophene derivatives.

Inhibitions of Corrosion of Nickel in Perchloric Acid by mono-substituted Phenyl N-phenylcarbamates

A. K. Mohamed,S.S. El,A.S. Fouda Korean Chemical Society 1989 Bulletin of the Korean Chemical Society Vol.10 No.6

The use of some mono-substituted phenyl N-phenylcarbamates derivatives as corrosion inhibitors for nickel in 1M perchloric acid was studied by galvanostatic polarization. The inhibition appears to function through general adsorption isotherm. However, galvanostatic polarization data suggest that in the case of all seven inhibitors both anode are polarized under the influence of an external current. Electrocapillary measurements have also revealed that the tendency of the inhibitors tested to adsorb on metallic surface follows the same order of efficiency.

CFD modelling of flow and mixing characteristics for multiple rows jets injected radially into a non-reacting crossflow

H. F. Elattar,A. Fouda,Abdullah S. Bin-Mahfouz 대한기계학회 2016 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.30 No.1

CFD parametric study was done of flow and mixing characteristics of coolant radial jets injected outwardly from a centerline multiplerows diffuser into a heated non-reacting crossflow in a cylindrical chamber in three-dimensional model using ANSYS-FLUENT 14.5. The effects of jet-mixing ratio, nozzles diameter, diffuser diameter, number of nozzles rows number of nozzles per row on the penetrationdepth and mixing quality through chamber cross section were parametrically studied. The simulation results were validated with theavailable experimental data and good agreement was obtained. The results showed that the nozzle diameter, the diffuser diameter and thejet-mixing ratio have remarkable effects on the penetration depth and the mixing quality compared to the effects of number of nozzles perrow and the number of nozzle rows. The penetration depth at downstream, the jet diffuser exit and the mixing quality at centerline ofchamber exit are increased @46% & @49%, respectively, with increasing the jet-mixing ratio from 0.1 to 0.5. Dimensionless correlationsin terms of the studied parameters for predicting the penetration depth, mixing quality and maximum temperature difference were developedand presented.

Some Thiosemicarbazide Derivatives as Corrosion Inhibitors for Aluminium in Sodium Hydroxide Solution

Moussa, M.N.,Fouda, A.S.,Taha, F.I.,Elnenaa, A. Korean Chemical Society 1988 Bulletin of the Korean Chemical Society Vol.9 No.4

The effect of some thiosemicarbazide derivatives on corrosion of aluminium in 2M sodium hydroxide has been studied using thermometric, weight loss and hydrogen evolution techniques. The rate of the corrosion depends on the nature of the inhibitor and its concentration, heated of hydrogenation, mode of interaction with the metal surface and formation of metallic complexes. The compounds are weakly adsorbed on the surface of aluminium and form a monolayer of the adsorbate. Values of the Arrhenius activation energies indicate agreement with those obtained for an activation controlled process.