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Search Results: 1 - 10 of 15602 matches for " Ashraf Abd El-Wanis Beshr "
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Structural Deformation Monitoring and Analysis of Highway Bridge Using Accurate Geodetic Techniques  [PDF]
Ashraf Abd El-Wanis Beshr
Engineering (ENG) , 2015, DOI: 10.4236/eng.2015.78045
Abstract: As the new materials and technologies are increasingly applied to construction of civil infrastructures such bridges, dam and tunnels, the need for structural monitoring systems, maintenance and restoration becomes more important and vital. Bridges are widespread in every society and affect its human, social, economical and cultural aspects. Measurements and monitoring of the structural deformation of highway bridges have an essential role in structural safety. This paper investigates an integrated monitoring system for estimation of the deformation behavior of one of the important reinforced bridges in Egypt. The applied data for analysing the deformation of any structure from geodetic observations are the coordinates of several monitoring points distributed on the structure itself. The coordinates of these points are calculated with respect to control fixed points. So any deviations in the control points coordinates between the two successive epochs of observations will affect the values of structural deformation. To overcome this shortage, applying the multi-parameter transformation will be studied in this paper for structural health monitoring of bridges. Statistical tests using F-Fisher criterion with a confidence level of 98% of the geodetic observations for bridge deformation values are also presented. The results of the practical measurements, analysis of the interesting deformation technique and traffic flow around the studied highway bridge are also presented. The resulting structural deformation values from statistical tests provide a significant improvement of understanding and prediction the structure deformation values of highway bridges.
Monitoring Bridge Deformation Using Auto-Correlation Adjustment Technique for Total Station Observations  [PDF]
Ashraf Abd El-Wanis Beshr, Mosbeh R. Kaloop
Positioning (POS) , 2013, DOI: 10.4236/pos.2013.41001
Abstract:

Bridges are omnipresent in every society and they affect its human, social, ecological, economical and cultural aspects. This is why a durable and safe usage of bridges is an imperative goal of structural management. Measurement and monitoring have an essential role in structural management. The benefits of the information obtained by monitoring are apparent in several domains. In deformation analysis, the functional relationship between the acting forces and the resulting deformations should be established. If time depending observations are given, a regression could be used as a functional model. In case of stochastic model uncorrelated observations with identical variance are assumed. Due to the high sampling rate, a small time difference arises between two observations. Thus the assumed stochastic model is not suitable. The calculation has to be effected by means of auto-correlated observations. This paper investigates an integrated monitoring system for the estimation of the deformation (i.e., static, quasi-static) behavior of bridges from total station observations and studies the effect of autocorrelation technique on the accuracy of the estimated parameters and variances. The results have shown that autocorrelation technique is reduced the standard deviation of X&Y-direction about 6.7% to 29.4% and 6.5% to 15.5% of the original value, respectively, but the situation was differ in Z direction; the standard deviation in vertical component Z was increased.

Cutaneous Metastases from DifferentInternal Malignancies in Egypt
Amen Hamdy Zaky,Mostafa Elsayed Abd El-Wanis,Hisham Hamza,Hisham Zayan Abdel-Hafez
Middle East Journal of Cancer , 2010,
Abstract: Background:Cutaneous metastasis is defined as the spread of malignant cells froma primary malignancy to the skin. Generally, cutaneous involvement from internal malignancies is uncommon. No reports have focused on the cutaneous metastasis profiles in Egypt or the Middle Eastern population. In this study, we seek to determine the rates at which different internal malignancies give rise to cutaneous metastases upon first diagnosis of the primary tumor.Methods:Patients with internal malignancies who attended the South Egypt Cancer Institute from January 2004 through May 2010 were examined and followed to identify cutaneous metastases, which were confirmed by biopsy and histological evaluation.Results:Among 2208 cases of internal malignancies, 48 cases of cutaneous metastases were detected. The clinical profiles were similar to those from western and Asian countries, although the frequencies of primary tumors differed. Most commonly in Egypt breast cancer and urinary bladder cancers were seen.Conclusion:The risk of skin metastases depends largely on the characteristics of tumor cells, which are similar among different groups.
Knowledge and performance among nurses before and after a training programme on patient falls  [PDF]
Nagwa Younes Abou El Enein, Azza Saad Abd El Ghany, Ashraf Ahmad Zaghloul
Open Journal of Nursing (OJN) , 2012, DOI: 10.4236/ojn.2012.24053
Abstract: Background: Patient falls in hospitals are common and affect approximately 2% to 17% of patients during their hospital stay. Patient falls are a nursingsensitive quality indicator in the delivery of inpatient services. Objective: To assess the effect of educational training program on nurses’ knowledge and performance regarding prevention of fall at one of the health insurance organization hospitals in Alexandria. Setting: The study was conducted at 284 bed general hospital affiliated with the Health Insurance Organization in Alexandria. Design: A quasi-experimental design was followed. Participants: The study sample included all nurses of different ranks working at four departments namely, orthopedic, medical, surgical, ICU unit. Results: There was a significant difference regarding all factors under study before and after the educational programme except for two individual factors, old age (p = 0.84), overall poor health status (p = 0.38), and two health factors, uses aids (p = 0.50), treatment by heparin (p = 1.00), and two environmental factors, poor lighting (p = 0.34), loose cords or wires (p = 0.30) and bells (p = 0.30), and one miscellaneous factor, patient education (p = 0.85) and tidy environment(p = 0.85). All departments showed posttest performance improvement, the total performance median for departments regarding environmental factor (p = 0.04) and health education (p = 0.001). Conclusion: Education programmes should be regularly, updated in view of changing knowledge and work practices.
Synthesis, Reactions and Evaluation of the Antimicrobial Activity of Some 4-(p-Halophenyl)-4H-naphthopyran, Pyranopyrimidine and Pyranotriazolopyrimidine Derivatives
Ashraf H. F. Abd El-Wahab
Pharmaceuticals , 2012, DOI: 10.3390/ph5070745
Abstract: A series of naphthopyran derivatives 3a–f were prepared. Reaction of 2-amino-4-( p-chlorophenyl)-7-methoxy-4 H-naphtho[2,1- b]pyran-3-carbonitrile ( 3b) with Ac 2O afforded two products, 2-acetylamino-7-methoxy-4-( p-chlorophenyl)-4 H-naphtho-[2,1- b]pyran-3-carbonitrile ( 4) and 10,11-dihydro-3-methoxy-9-methyl-12-( p-chloro-phenyl)-12 H-naphtho[2,1- b]pyran[2,3- d]pyrimidine-11-one ( 5) and treatment of 3b with benzoyl chloride gave the pyranopyrimidin-11-one derivative 6. While treatment of 3b with formamide afforded 11-amino-3-methoxy-12-( p-chlorophenyl)-12 H-naphtho[2,1- b]pyrano[2,3- d]pyrimidine ( 7). Reaction of 3b with triethyl orthoformate gave the corresponding 2-ethoxymethyleneamino-7-methoxy-4-( p-chlorophenyl)-4 H-naphtho-[2,1- b]pyran-3-carbonitrile ( 8). Hydrazinolysis of 8 in EtOH at room temperature yielded 10-amino-10,11-dihydro-11-imino-3-methoxy-12-( p-chlorophenyl)-12 H-naphtho[2,1-b]pyrano-[2,3-d]pyrimidine ( 9), while aminolysis of 8 with methylamine or dimethylamine gave the corresponding pyranopyrimidine and N,N-dimethylaminomethylene derivatives 10 and 11. Condensation of 9 with some carboxylic acid derivatives afforded triazolopyrimidine derivatives 12–16, while reaction of 9 with benzaldehyde gave 10-benzalamino-10,11-dihydro-11-imino-3-methoxy-12-( p-chlorophenyl)12 H-naphtho[2,1- b]pyrano[2,3- d]pyrimidine ( 17). The structures of the newly synthesized compounds were confirmed by spectral data. The synthesized compounds were also screened for their antimicrobial activity.
The Diagnostic and Prognostic Value of Serum Procalcitonin among Ventilator Associated Pneumonia Patients*  [PDF]
Ashraf Abd El Halim, Adel Attia, Taysser Zytoun, Hosam Eldeen Salah
Open Journal of Respiratory Diseases (OJRD) , 2013, DOI: 10.4236/ojrd.2013.32012
Abstract: Ventilator-associated pneumonia (VAP) is a complication in as many as 28% of patients who receive mechanical ventilation. Studies have consistently shown that a delay in diagnosis and treatment increases the mortality risk. The aim of this work was to clarify the role of the serum procalcitonin (PCT) in the diagnosis and the prognosis of ventilator associated pneumonia. Methods: Forty two VAP patients, 20 non VAP-ICU (on mechanical ventilation) admitted patients and 20 healthy control subjects of similar age and sex were included in the study. PCT levels in serum samples were measured in all subjects. Results: There was a highly statistically significant difference (p value < 0.001) between VAP patients on one side and non VAP-ICU patients and healthy control subjects on the other side regarding the mean values of PCT. Also, the mean values of PCT were statistically significantly higher (p < 0.001) among died VAP group than the survivor VAP group. There was a statistically positive correlation (p < 0.01) between mortality prediction scores (APACHE II (R = 0.449), CRIP (R = 0.403) and SOFA (R = 0.437)) and initial PCT serum levels. Conclusions: This study found that the increased PCT serum level is an important diagnostic tool for VAP and the PCT serum levels can predict the outcome of VAP patients. We recommend other larger studies to augment our findings.

Preoperative gemcitabine based chemo-radiotherapy in locally advanced non metastatic pancreatic adenocarcinoma
Doaa W Maximous, Mostafa E Abdel-Wanis, Mohammed I El-Sayed, Alaa A Abd-Elsayed
International Archives of Medicine , 2009, DOI: 10.1186/1755-7682-2-7
Abstract: From March 2006 to November 2007, 25 patients with locally advanced non metastatic pancreatic cancer were treated by preoperative gemcitabine based chemo-radiotherapy. The radiation dose was 54 Gray in 30 fractions over 6 weeks prescribed to the isocenter. Gemcitabine (300 mg/m2) was given through a 30 minute intravenous infusion. This was done 30 minutes before the radiation sitting on a weekly basis throughout the radiotherapy course.Approximately 6 weeks after the completion of chemo radiation, an evaluation was performed regarding tumour response and resectability as well as acute toxicity. Pancreaticoduodenectomy was performed for operable patients with surgical reconstruction.Patients who achieved complete resection (CR) numbered 2 (8%), while those achieving partial resection (PR) totalled 11 (44%); six of these patients were considered ro be operable. Thus Pancreaticoduodenectomy was performed on 8 patients (2 with CR and 6 with PR) with surgical reconstruction. Patients who had a stable disease numbered 4 (16%), and those with progressive diseases included a group of eight (32%). The postoperative 30 day mortality occurred only in one patient (12.5%). Acute toxicity of chemoradiation occurred in the form of grade I leucopoenia and thrombocytopenia. Hepatic toxicity, nausea, and vomiting were found in 8 patients (32%), 10 patients (40%) and 4 patients (16%), respectively. The postoperative 30 day mortality occurred only in 1 patient. Also, minor biliary leakage and leakage from gastrointestinal anaestomosis both occurred in a single patient. Out of the 8 patients who underwent radical surgical resection, only one developed local recurrence and simultaneous liver metastasis during the follow up period. The median survival of all patients was 12 months.Preoperative gemcitabine based chemoradiation might benefit patients with locally advanced non metastatic pancreatic cancer by increasing the resectability without significant acute toxicity.Almost 30% of patien
Role of Ischemia Modified Albumin in Diagnosis of Pulmonary Embolism  [PDF]
Ashraf Abd El Halim, Adel Attia, Saad Samra, Tayseer Zytoun, Hosam Eldeen Salah, Manal Al-Anazi
Open Journal of Respiratory Diseases (OJRD) , 2014, DOI: 10.4236/ojrd.2014.41004
Abstract:
Pulmonary embolism is a common and potentially lethal condition. Clinical signs and symptoms for pulmonary
embolism are nonspecific. New and simple tests are therefore needed in order to help in early diagnosis of pulmonary embolism. The aim of this work is to elucidate the role of IMA in the diagnosis of pulmonary embolism. Subjects and Methods: 75 patients with suspected pulmonary embolism and 20 control healthy subjects were included in this study. Measurement of IMA was done in all subjects. Results: The mean values of IMA were statistically significantly higher among the PE patient group (0.43 ± 0.104 ABSU) in comparison with non PE patient group (0.27 ± 0.053 ABSU) and healthy control subjects (0.21 ± 0.080 ABSU). At cut-off value of 0.305 ABSU, IMA had 97.5% sensitivity and 71.42% specificity. The area under the curve was 0.952. The positive predictive value of this cut-off value was 79.59% while the negative predictive value was 96.15%. Conclusions: IMA is a good alternative to D-dimer in the diagnosis and exclusion of PE. Larger studies are needed to augment our results.
Health Care Implementation by Means of Smart Cards
Magdy E. Elhennawy,Mohamed Amer,Ashraf Abd El-Hafeez
International Journal of Computer Science Issues , 2011,
Abstract: Smart card technology is a reliable and proven solution that has had decades of use in various industries and is now making its mark on healthcare. It is portable, secure, and can hold health information. In this research, the smart card has been introduced in a new usage; it is used to control the referral process. It holds the control parameters that link between the referring entity and the referred entities. This leads to control the management of the claims in a timely and correct basis. The smart cards technology, in this research, have been used for: verifying citizen eligibility, registering recent citizen medical visits to family medical units as well as the corresponding visits to contracted providers besides the link between them, reporting, and facilitating claim management. Accordingly, the usage of smart cards in this way will add. The research allows remarkable improvements in the healthcare service provision.
Sodium Titanates Formation by Roasting of Pellets or Powder Mixture of Soda Ash and Rossetta Region Ilmenite Ore Concentrate in Air  [PDF]
Inass Ashraf Nafeaa, Amina F. Zekry, Mohamed Gamal Khalifa, Abd El-Fatah B. Farag, Naglaa A. El-Hussiny, Khaled El Hossiny, Mohamed El-Menshawi Hussein Shalabi
Open Journal of Metal (OJMetal) , 2014, DOI: 10.4236/ojmetal.2014.42003
Abstract:
Alkaline metals and hydrogen titanates are of great interest for possible applications. The qualities of soda ash and Rosetta ilmenite ore concentrate pellets were investigated. The kinetic formation of sodium titanate via roasting of soda ash and ilmenite pellets and powder was studied in the temperature range of 800C to 900C.
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