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Search Results: 1 - 10 of 410464 matches for " Ahmed M. Abbas "
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Multiple Primary Malignancies: Metastatic Renal with Early Breast and Endometrial Cancers: A Case Report  [PDF]
Amal Rayan, Abbas Ahmed M. Ashraf, Hebat Allah M. Bakri
Journal of Cancer Therapy (JCT) , 2018, DOI: 10.4236/jct.2018.911075
Abstract: Double primary malignancies could be divided into two categories, depending on the interval between tumor diagnoses. A secondary malignancy could be defined as a new cancer that has occurred as a result of previous treatment with radiation or chemotherapy. Second primary malignancy can occur at any age but its commonly at old age. A 46 premenopausal female patient presented to our outpatient clinic complaining from a mass in her right breast, routine metastatic work-up for distant metastasis declared multiple hepatic metastases, RT renal mass, and bone metastases. Palliative radiotherapy to tender and weight bearing sites followed by 4 cycles of systemic chemotherapy FEC regimen were received. Tru-cut needle biopsy from renal mass detected renal cell carcinoma of clear cell type, the patient started sunitinib and tamoxifen with bisphosphonate (Zoledronic acid), assessment of the response revealed reduction of the size and number of HFLs, and the size of renal mass, so the patient was decided to do cytoreductive nephrectomy and then continued on TAM and sunitinib. Collectively, due to the rising incidence of multiple primary malignancies, further studies should be done not only for better clinical evaluation and treatments but also for accurate determination of possible causes, pathogenesis, effective managements and screening programs.
Review on the Design of Web Based SCADA Systems Based on OPC DA Protocol
Hosny Ahmed Abbas, Ahmed M. Mohamed
International Journal of Computer Networks , 2011,
Abstract: One of the most familiar SCADA (supervisory control and data acquisition)application protocols now is OPC protocol. This interface is supported by almostall SCADA, visualization, and process control systems. There are many researchefforts tried to design and implement an approach to access an OPC DA serverthrough the Internet. To achieve this goal they used diverse of modern ITtechnologies like XML, Webservices, Java and AJAX. In this paper, we present acomplete classification of the different approaches introduced in the litrature. Acomparative study is also introduced. Finally we study the feasibilty of therealization of these approaches based on the real time constraints imposed bythe nature of the problem.
Could Bladder Inflation Prior to Cesarean Section Prevent Urinary Tract Injury in High Risk Group? A Randomized Controlled Trial  [PDF]
Abd El-Naser Abd El-Gaber Ali, Mohammad A. M. Ahmed, Mustafa M. Khodry, Ahmed M. Abbas
Open Journal of Obstetrics and Gynecology (OJOG) , 2019, DOI: 10.4236/ojog.2019.92021
Abstract: Background: Accidental urinary tract particularly bladder injury during cesarean delivery has a significant maternal morbidity, as it may lead to extended operative time, infection of urinary tract and sometimes development of urinary tract fistulae. Objective: To find out the efficacy of urinary bladder inflation immediately prior to cesarean section (CS) procedure in minimizing incidence of accidently urinary tract injury in high risk patients. Setting: Obstetrics and Gynecology Department, Faculty of Medicine, South Valley University, Qena, Egypt. Duration: From August 2017 to November 2018. Study Design: A prospective randomized controlled trial. Methods: Seventy six pregnant women recruited from attendants of outpatient antenatal care unit of obstetrics and gynecology department who planned for cesarean delivery and carried one or more risk factors for urinary tract injury. Patients randomly were classified into 2 groups (group I included 38 cases, underwent bladder inflation using triple way Foley’s catheter immediately before CS and group II included 38 cases, and underwent bladder deflation with 2 ways Foley’s catheter immediately before CS. Results: The overall incidence of urinary tract injury was significantly higher in group II (7 cases = 18.4%) than in group I (2 cases = 5.2%) with
Synthesis and thermal studies of mixed ligand complexes of Cu(II), Co(II), Ni(II) and Cd(II) with mercaptotriazoles and dehydroacetic acid  [PDF]
Dina M. Fouad, Ahmed Bayoumi, Mohamed A. ElGahami, Said A. Ibrahim, Abbas M. Hammam
Natural Science (NS) , 2010, DOI: 10.4236/ns.2010.28103
Abstract: A series of new mixed ligand complexes of cobalt(II), nickel(II), copper(II) and cadmium(II) have been synthesized with 3benzyl1H4[(2 methoxybenzylidine) amino]1, 2, 4triazole5 thione (MBT), 3bezyl1H4[(4chlorobenzylidine) amino]1, 2, 4triazole5thione (CBT), 3benzyl 1H4[(4nitrobenzylidine)amino]1, 2, 4triazole 5thione (NBT) and dehydroacetic acid sodium salt (Nadha). The mixed ligand complexes have been characterized by elemental analysis, spec troscopic spectral measurements (IR, UVVis.), molar conductance, magnetic measurements and thermal studies. The stoichiometry of these com plexes is M:L1:L2 = 1:1:1, 1:2:1 or 1:1:2 where L1 = NBT, CBT and MBT and L2 = Nadha. Tetrahedral structure was proposed for all Cd(II) mixed ligand complexes while the square planar geometry was proposed for Cu(II) mixed ligand complex with NBT. Octahedral structure was proposed for Ni(II), Co(II) mixed ligand complexes and Cu(II) mixed ligand complexes with CBT and MBT ligands. The thermal decomposition study of the prepared complexes was monitored by TG, DTG and DTA analysis in dynamic nitrogen atmosphere. TG, DTG and DTA studies confirmed the chemical formulations of theses complexes. The kinetic parameters were determined from the the thermal decomposition data using the graphical methods of CoatsRedfern and HorwitzMetzger. Thermodynamic parameters were calculated using standard relations.
Management of acute esophageal variceal bleeding by endoscopic sclerotherapy in technically difficult endoscopic band ligation cases—A population based cohort study  [PDF]
Gamal E. Esmat, Iman M. Hamza, Bahaa E. Abbas, Ahmed M. Hashem, Hossam S. Ghoneim
Open Journal of Gastroenterology (OJGas) , 2013, DOI: 10.4236/ojgas.2013.35048
Abstract: Endoscopic band ligation is regarded as the main therapeutic option for acute esophageal variceal bleeding, while sclerotherapy may be used in the acute setting if ligation is technically difficult. The incidence of difficult-to-perform band ligation in acute esophageal variceal bleeding, as well as the outcome of patients subjected to injection sclerotherapy as an alternative treatment, has not been clearly investigated. Our aim is to study the outcome of patients subjected to injection sclerotherapy in the acute setting of esophageal variceal bleeding when endoscopic band ligation is technically difficult to perform. We included 151 patients with acute esophageal variceal bleeding originnating from medium or large sized varices. All patients were planned for EBL as the 1st treatment option (EBL group 61.6%), meanwhile, EIS using 5% ethanolamine oleate was reserved as the 2nd treatment option when EBL was technically difficult (EIS group 38.4%). The mean time to restore hemodynamic stability was significantly prolonged in the EIS group (11.5 ± 6.5 hrs versus 9.5 ± 5.0 hrs, p 0.05). Initial control of bleeding was significantly higher in the EBL group versus the EIS group (96.7% vs 84.5%, p 0.021). Re-bleeding was more among the EIS group (42.9% vs 24.2%, p 0.04). There were no significant differences as regarding mortality and duration of hospital stay. So, a considerable proportion of cases presenting with acute variceal bleeding will have difficulty in performing EBL. In these patients, sclerotherapy is not a waning procedure with an accepted success rate, without much additional complications and without deranging mortality.
Structural and Characteristics of Manganese Doped Zinc Sulfide Nanoparticles and Its Antibacterial Effect against Gram-Positive and Gram-Negative Bacteria  [PDF]
Iftikhar M. Ali, Isam M. Ibrahim, Entissar F. Ahmed, Qayes A. Abbas
Open Journal of Biophysics (OJBIPHY) , 2016, DOI: 10.4236/ojbiphy.2016.61001
Abstract: The Manganese doped zinc sulfide nanoparticles of the cubic zinc blende structure with the average crystallite size of about 3.56 nm were synthesized using a coprecipitation method using Thioglycolic Acid as an external capping agent for surface modification. The ZnS:Mn2+ nanoparticles of diameter 3.56 nm were manufactured through using inexpensive precursors in an efficient and eco-friendly way. X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) and Fourier Transform Infrared (FTIR) spectroscopy are used to examine the structure, morphology and chemical composition of the nanoparticles. The antimicrobial activity of (ZnS:Mn2+) nanocrystals was investigated by measuring the diameter of inhibition zone using well diffusion mechanism versus two various bacterial strains. The technique of microorganism inactivation was considered as sorts-dependent. Bacillus subtilis showed the largest antibacterial sensitivity (35 mm) to ZnS: Mn2+ nanoparticles at a concentration (50 mM) whereas Escherichia coli offered maximum zone of inhibition (20 mm) at the same concentration. In this study, the results indicated that ZnS:Mn2+ nanoparticles were found to have significant antibacterial activity against Gram-negative (E. coli) and Gram-positive (Bacillus subtilis) bacteria.
Review on the Design of Web Based SCADA Systems Based on OPC DA Protocol
Hosny A. Abbas,Ahmed M. Mohamed
Computer Science , 2015,
Abstract: One of the most familiar SCADA (supervisory control and data acquisition) application protocols now is OPC protocol. This interface is supported by almost all SCADA, visualization, and process control systems. There are many research efforts tried to design and implement an approach to access an OPC DA server through the Internet. To achieve this goal they used diverse of modern IT technologies like XML, Web services, Java and AJAX. In this paper, we present a complete classification of the different approaches introduced in the literature. A comparative study is also introduced. Finally we study the feasibility of the realization of these approaches based on the real time constraints imposed by the nature of the problem.
Comparison between Preoperative and Postoperative Sublingual Misoprostol for Prevention of Postpartum Hemorrhage during Cesarean Section: A Randomized Clinical Trial  [PDF]
Alaa Eldin A. Youssef, Mansour A. Khalifa, Mohamed Bahaa, Ahmed M. Abbas
Open Journal of Obstetrics and Gynecology (OJOG) , 2019, DOI: 10.4236/ojog.2019.94052
Abstract: Background: Blood loss is one of the important complications during cesarean section (CS). Previous reports have shown that misoprostol is effective in reducing blood loss during and after CS. However, the optimum time for its administration to decrease the amount of PPH is still under discussion. Objective: To compare the effect of preoperative and postoperative administration of sublingual misoprostol (400 μg) in reducing the amount of blood loss during and 24 hours after CS. Setting: Obstetrics and Gynecology Department, Faculty of Medicine, Assiut University, Assiut, Egypt, between January 2017 and July 2018. Study Design: A prospective, randomized clinical trial. Methods: Four-hundred thirty women fulfilling the inclusions criteria: elective lower segment CS at term (≥37 weeks) with normal fetal heart tracing who accepted to participate in the study. Patients were divided into two groups; Patients assigned to group 1 received 400 μg sublingual misoprostol immediately after urinary catheterization and before skin incision, while patients assigned to group 2 received sublingual misoprostol immediately after skin closure. The primary outcome was the estimation of intraoperative and postoperative blood loss for 24 hours. Results: There was a significant reduction in the intraoperative blood loss in group 1 compared with group 2 (403.51 ± 72.99 vs. 460.99 ± 74.66 ml, respectively). Also, there was a significant reduction in postoperative blood loss in group 1 compared with group 2 with a statistical significance (169.45 ± 12.03 vs. 195.77 ± 13.34 ml, respectively). Postoperative hemoglobin and
Metachronous double malignancy involving the kidney and the breast: A case report  [PDF]
Osama Ahmed, Tahir Abbas
Case Reports in Clinical Medicine (CRCM) , 2014, DOI: 10.4236/crcm.2014.32016
Abstract:

The occurrence of multiple primary cancers is rare; it can be missed as a disease progression. The etiology remains controversial. We report a case of a 55-year-old female with metastatic renal cell carcinoma treated with sutent followed by left sided nephrectomy. Follow-up CT showed increase in the size of the right axillary lymph nodes which was proven after biopsy to be metastatic adenocarcinoma of the breast. Any suspicious disease progression in a single site not compatible with disease history should be biopsied for confirmation. The relationship between renal cell carcinoma and breast cancer is still unclear, and more case reports are required to determine this relationship.

Evaluation of Different Ultrasonographic Modalities in the Diagnosis of Morbidly Adherent Placenta: A Cross-Sectional Study  [PDF]
Mostafa Hussein, Mohammed F. Ramadan Abd, Ahmad M. Abu-Elhassan, Ahmed M. Abbas, Alaa Eldin A. Youssef
Open Journal of Obstetrics and Gynecology (OJOG) , 2019, DOI: 10.4236/ojog.2019.94041
Abstract: Objective: To compare the accuracy of different ultrasonographic modalities; two-dimensional ultrasound (2D-US), color Doppler and three-dimensional power Doppler (3D-PD) in the antenatal diagnosis of the morbidly adherent placenta. Setting: Obstetrics and Gynecology Department, Faculty of Medicine, Assiut University, Assiut, Egypt. Study Design: A cross-sectional study. Methods: All patients fulfill the inclusions criteria: gestational age > 28 weeks, previous one or more cesarean delivery, previous uterine surgery, placenta previa, vitally stable patient and women accepted to participate in the study were included. All patients were evaluated using 2D-US, color Doppler and 3D-PD before delivery. The final diagnosis was established by laparotomy and by histopathology of hysterectomy sample if hysterectomy would be done. Results: One-hundred fifty patients were enrolled in the study. 2D-US has higher sensitivity (86.96%) than 2D color Doppler (84.06%) and 3D-PD (79.71%) in the diagnosis of placenta accreta. On the other hand, 3D-PD has slightly higher specificity (83.95%) than color Doppler (82.72%) and
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