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Diffusion-Weighted MR Imaging of the Benign Hepatic Focal Lesions

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Open Journal of Radiology 2014年第1期4卷 136-143页

作者： Adel el-Badrawy Germeen Albair Ashmallah Ahmed Mohamed Tawfik Sherif Abdelfattah Manal Salah-eldin Emad eldin Azmy amro Awad el-karef Ghada A. Salem Omar Farouk Clinical Hematology Department Faculty of Medicine Mansoura University Mansoura Egypt Department of Surgical Oncology Faculty of Medicine Mansoura University Mansoura Egypt Medical Oncology Department Faculty of Medicine Mansoura University Mansoura Egypt Pathology Department Faculty of Medicine Mansoura University Mansoura Egypt Radiology Department Faculty of Medicine Mansoura University Mansoura Egypt Tropical Medicine Department Faculty of Medicine Zagazig University Egypt

Purpose: To determine the role of diffusion weighted MR imaging and apparent diffusion coefficient (ADC) in benign hepatic focal lesions. Method and Materials: This study included 47 patients (29 M, 18 F with mean age of 43 years) with benign hepatic focal lesions. They were cyst (n = 8), hemangioma (n = 23), abscess (n = 5), adenoma (n = 5), focal nodular hyperplasia (n = 4) and nodular regenerative hyperplasia (n = 2). They underwent routine MR imaging and diffusion MR weighted imaging using 1.5 tesla MR unit (Symphony-Siemens). Diffusion MR imaging was done using spin echo type of single shot echo planar imaging (EPI) with b value of 0, 500 & 1000 sec/mm2. The apparent diffusion coefficient (ADC) map was reconstructed and ADC value was measured. The mean ADC values correlated with histo-pathological results as well as follow-up imaging results. Results: Adequate ADC maps were obtained in 47 patients. The mean ADC values were 3.4 ± 0.12 × 10-3 mm2/sec in cystic lesion, 2.23 ± 0.08 × 10-3 mm2/sec in hemangioma, 1.94 ± 0.05 × 10-3 mm2/sec in abscess, 1.72 ± 0.07 × 10-3 in focal nodular hyperplasia, 1.65 ± 0.06 × 10-3 mm2/sec in adenoma, 1.62 ± 0.07 × 10-3 mm2/sec in nodular regenerative hyperplasia. The mean ADC values were significantly different within benign hepatic focal lesions (P < 0.001). The differences between the mean ADC values of FNH, adenoma and NRH were not statistically significant (P < 0.23). Conclusion: Diffusion weighted MR imaging is a new imaging modality for diagnosis and characterization of different benign hepatic focal lesions, particularly in patient with renal dysfunction.

关键词： Diffusion MR Imaging Apparent Diffusion Coefficient Benign Hepatic Focal Lesion

Fostering firm innovativeness:Understanding the sequential relationships between human resource practices,psychological empowerment,innovative work behavior,and firm innovative capability

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International Journal of Innovation Studies 2024年第1期8卷 76-91页

作者： Ruba Sami Al Daboub amro Al-Madadha Ahmad Samed Al-Adwan Business Administration Department Princess Sumaya University for TechnologyAmmanJordan Department of Business Technology Business SchoolHourani Center for Applied Scientific ResearchAl-Ahliyya Amman UniversityAmmanJordan

This study investigated the relationships between human resource(HR)practices,employee psychological empowerment,employee innovative work behavior,and firm innovation capability in the context of the Information and Communication Technology(ICT)sector in *** the Social Exchange Theory(SET)as a guiding framework,this study explored how employee psychological empowerment and innovative work behavior mediated the influence of HR practices on a firm’s innovative *** on extensive data collected from ICT organizations in Jordan,our analysis had several key findings.A significant positive correlation between HR practices and psychological empowerment was *** design emerged as the most influential factor affecting psychological empowerment,whereas compensation had a weaker ***,we established that psychological empowerment significantly enhanced innovative work behavior,underscoring its role as a catalyst for innovative work behavior within the ***,our study supported the theory that psychological empowerment influenced a firms’innovation capabilities,emphasizing the pivotal role of employee empowerment in driving firm-level innovation in the Jordanian ICT *** findings provide insights for academic and practical audiences,clarifying how HR practices,employee psychological empowerment,and innovative work behavior collectively influenced firm innovation capability within the unique context of the Jordanian ICT sector.

关键词： Human resources practices Psychological empowerment Innovative work behavior Firm innovative capability Social exchange theory Job design

Chronic ocular GVHD:limbal and conjunctival stem cell allografts from the same hematopoietic stem cell donor

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International Journal of Ophthalmology(English edition) 2018年第9期11卷 1569-1572页

作者： elias F Jarade Hala el Rami Youssef Abdelmassih Mazen amro Beirut Eye and ENT Specialist Hospital Beirut 116-5311Lebanon

Dear Editor,I am *** F Jarade from the Beirut Eye and ENT Specialist Hospital, Beirut, Lebanon. I write to describe a novel surgical technique in the management of chronic ocular graft-versus-host disease（GVHD）.

关键词： Chronic ocular GVHD limbal and conjunctival stem cell allografts from the same hematopoietic stem cell donor

Management of cataract in keratoconus: early visual outcomes of different treatment modalities

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International Journal of Ophthalmology(English edition) 2019年第10期12卷 1654-1658页

作者： Nicolas Arej Wassef Chanbour Karen Zaarour Mazen amro Hala el-Rami Fadi Harb elias Jarade Department of Ophthalmology Faculty of MedicineSaint-Joseph University of BeirutBeirut11-5208Lebanon Beirut Eye&ENT Specialist Hospital Beirut116-5311Lebanon Department of Ophthalmology Faculty of MedicineLebanese UniversityBeirut14-6573Lebanon Mediclinic Dubai Mall Dubai282890United Arab Emirates

A review of 31 eyes with keratoconus who developed cataract and underwent phacoemulsification. Visual acuities were measured 1 mo postoperatively. Six eyes with a history of good corrected distance visual acuity(CDVA) and a similar refractive and topographic astigmatic axis were implanted with toric intraocular lenses(IOLs). The mean postoperative uncorrected distance visual acuity(UDVA) was 0.2 logMAR with a spherical equivalent(SE): 0.75 D. eleven eyes with a history of good CDVA and different refractive and topographic axis were implanted with monofocal IOL+/-Toric implantable collamer lenses to treat anisometropia and ametropia;mean UDVA was 0.25 logMAR with a mean SE:-0.51 D postoperatively. Six eyes with poor CDVA were first treated with intra-corneal ring segments, followed by phacoemulsification, the mean postoperative UDVA was 0.82 logMAR with an SE: 0.22 D. Eight eyes had advanced ectesia and received combined phacoemulsification and penetrating keratoplasty. Our approach is efficient in addressing ametropia after cataract surgery in keratoconic eyes.

关键词： keratoconus cataract surgery residual ametropia algorithm

Effect of vehicle safety recalls on the perception towards other vehicles from the same country of origin

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Journal of Traffic and Transportation Engineering(English Edition) 2019年第5期6卷 493-503页

作者： Khaled Shaaban amro Maher Anusorn Singhapakdi Department of Civil and Architectural Engineering Qatar University Doha Qatar Beacom School of Business University of South Dakota Vermillion SD 57069 USA Department of Marketing Old Dominion University Norfolk VA 23529 USA

A vehicle safety recall significantly impacts the demand for these specific manufacturer *** effect of this recall on the other manufacturers from the same country of origin(COO) that are not involved in the recall is poorly *** purpose of this study is to examine the impact of a vehicle safety recall on other vehicle brands originating from the same *** study uses a case study related to Toyota recalls and the impact of the crises on the attitudes toward three other Japanese brands-namely,Honda,Nissan,and Mazda.A questionnaire was conducted with 375 participants who are familiar with the *** findings from the questionnaire indicated that product-harm crises have an indirect negative effect on brands from the same ***,brands from the transgressor’s COO should not make the transgressor’s betrayal salient,which might hurt their *** example,if Honda makes the betrayal of Toyota salient through comparative advertising,Honda’s efforts might hurt the company directly through consumers’ image of Japanese *** research should examine the extent to which comparative advertising impacts non-transgressing brands that originate from the same country as the transgressing *** current results suggest that the non-transgressing companies might even assist the transgressing company to recover from such crises if consumers perceive a strong association between the non-transgressing brands and transgressing brands.

关键词： Automotive recalls Vehicle safety Car accidents Vehicle defects Safety ratings

Offline Controlling of Pseudomonas aeruginosa Resistant to protein Inhibitor Antibiotics Using Combination of EDTA and Na-citrate or Disinfectant(s)

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微生物学通报 2006年第5期33卷 95-100页

作者： amro Abd Al Fattah Amara Mohamed Zakaria Hussein Protein Research Department Genetic Engineering and Biotechnology Research Institute Mubarak City for Scientific Research and Technology Applications AlexandriaEgypt Department of Microbiology and Immunology Faculty of MedicineTanat UniversityTanta Egypt

Pseudomonas aeruginosa recognized as opportunistic pathogen causes severe infections for hospitalized patients, survive in and resist many antimicrobial agents like antibiotics and disinfectants. The aim of this study is to evaluate the role of EDTA in improving the sensitivity of resistant P. aeruginosa strains to disinfectants and Na-citrate. The strains used in this study were selected in house from Tanta University hospital, Egypt and tested for the synergistic effect of EDTA with Na-citrate or disinfectant(s). The results showed a significant effect of EDTA in improving P. aeruginosa sensitivity. In conclusion, we proposed that using EDTA in combination with different sanitization compounds and antimicrobial agents especially in hospitals aiming to control the spreading of infections.

关键词： Antimicrobial Sensitivity Preservative Divalent cations

Modeling and Simulation of Laser Assisted Turning of Hard Steels

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Modeling and Numerical Simulation of Material Science 2013年第4期3卷 106-113页

作者： Omar Abdulghani Mohamed Sobih amro Youssef Abdel-Monem el-Batahgy Central Metallurgical R & D Institute Cairo Egypt Military Technical College Cairo Egypt

This research work is focused on simulation of laser assisted turning as a new solution for machining of hard steels. A transient, three-dimensional model was developed to predict the temperature distribution of a rotated cylindrical steel workpiece subjected to a localized heating using a moving Gaussian laser beam. In this regard, a User-Defined Function was created to overcome the problem of a moving Gaussian heat source’ definition. This User-Defined Function was compiled into a finite volume software package (Fluent), where three-dimensional single precision solver was used for analysis. Based on this model, simulation of the surface temperature of 32 mm diameter workpiece of AISI51 50H steel was performed as a function of time at a specific distance behind the laser beam spot, which is corresponding to 30° angle from the laser beam. The simulation results were compared with other published data of the same steel type where a close agreement was obtained. The verified model was used for simulation of laser assisted turning of 20 mm diameter workpiece of AISI D2 tool steel. The cutting depth, behind the laser beam, was set at a distance corresponding to 60° angle from the laser beam for having sufficient access for handling both laser head and cutting tool. This cutting depth was studied as a function of different lasers and machining parameters. The results indicated that the optimum parameters for successful laser-assisted turning process of the concerned steels are 800 W laser power, 5 mm laser beam spot diameter, 20 sec preheating time, 0.8 mm/sec laser scanning speed, 300 rpm rotational speed and 0.8 mm/sec feed rate. These parameters ensure easy/successful cutting of 1 mm depth in one pass without deteriorating the properties of the remaining bulk material. It can be deduced that the developed model might provide a useful tool for online process control of different steel types regardless of their physical properties and geometries.

关键词： Laser Assisted Turning Hard Steels Three-Dimensional Modeling User-Defined Function Temperature Distribution

Production and Marketing Problems for Sugar Cane Growers in Qena Governorate

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Journal of Life Sciences 2011年第10期5卷 844-849页

作者： Bahgat Mohamed Abdel-Maksoud amro Bahaa-eldin Ahmed el-Shrabassee Department of Rural Sociology and Agricultural Extension Faculty of Agriculture University of Assiut Assiut 71526 Egypt

Sugar cane is a principal agricultural product in Egypt. Over 48% of its area is grown in Qena governorate. The agricultural extension system should identify problems and needs for farmers and provide them with their solutions. The main objective of this paper was to know production and marketing problems for sugar cane growers in Qena govemorate, Egypt. Six focus groups were organized for farmers in two villages and a survey was conducted on 224 extension personnel or 93 % of all extension personnel at districts and villages levels in Qena govemorate to collect necessary data. The most important perceived production problems were： spread of weeds and insects, weak role of agricultural extension, shortage and high costs of fertilizers and labor, and high costs of production, insecticides and irrigation. The most important perceived marketing problems were： high costs and unsystematic cutting, shortage and high costs of transportation, delay of cutting and delivery of product to the factory, inaccurate weigh and low prices of the product. A great role lies on the agricultural extension system to identify such problems and provide farmers with their solutions in order to increase the agricultural productivity of this crop in Qena govemorate.

关键词： Egypt extension personnel farmers Qena govemorate sugarcane problems.

Effect of laser assisted hatching on outcome of assisted reproductive technology

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Open Journal of Obstetrics and Gynecology 2013年第5期3卷 18-23页

作者： amro elhussieny Mohamed el Mandouh Sherif Hanafi Ghada M. Mansour Ahmed el-Kotb Department of Obstetrics and Gynecology Ain Shams University Cairo Egypt

Objective: To determine whether laser-assisted hatching can improve clinical outcome of assisted reproductive techniques in both unselected patients and patients with advanced female age, with recurrent implantation failure, or who are using frozen-thawed embryos. Study design: Prospective randomized study. Patients and methods: 179 consecutive women scheduled for intracytoplasmic sperm injection (ICSI) were randomised to either laser assisted hatching (LAH) or non LAH group. Patients were divided into 94 test and 85 control groups. On the day of embryo transfer, the zona pellucida of the selected embryos in the test group was thinned by using an infrared optical laser system, whereas in the control group they were left intact. Clinical pregnancy rates (CPR) and implantation rates (IR) were estimated. Result(s): Patients that underwent LAH (n = 94) had CPR, and IR of 35.1% and 50%, respectively. Patients that did not undergo LAH (n = 85) had lower CPR (28.2%, P = 0.324) and IR (33%, P = 230), with no statistically significant difference P Conclusion: The current study suggested that there is no need for the routine use of laser assisted hatching. However, there is evidence of laser assisted hatching benefit in selected

关键词： Laser-Assisted Hatching Advanced Female Age Implantation Failures Embryo Cryopreservation and Pregnancy Rate