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| 1 | Loading characteristics of mechanical rib bolts determined through testing and numerical modeling显示文摘Underground coal mines use mechanical bolts in addition to other types of bolts to control the rib deformation and to stabilize the yielded coal ribs.Limited research has been conducted to understand the performance of the mechanical bolts in coal ribs.Researchers from the National Institute for Occupational Safety and Health(NIOSH)conducted this work to understand the loading characteristics of mechanical bolts(stiffness and capacity)installed in coal ribs at five underground coal mines.Standard pull-out tests were performed in this study to define the loading characteristics of mechanical rib bolts.Different installation torques were applied to the tested bolts based on the strength of the coal seam.A typical tri-linear load-deformation response for mechanical bolts was obtained from these tests.It was found that the anchorage capacity depended mainly on the coal strength.Guidelines for modeling mechanical bolts have been developed using the tri-linear load-deformation response.The outcome of this research provides essential data for rib support design. | Khaled Mohamed Gamal Rashed Zorica Radakovic-Guzina | 2020 | International Journal of Mining Science and Technology2020，30，1： | 4 |
| 2 | Short‐term evaluation of autologous transplantation of bone marrow–derived mesenchymal stem cells in patients with cirrhosis: Egyptian study显示文摘 | Mona A. Amin Dina Sabry Laila A. Rashed Wael M. Aref Mohamed Ahmed el‐Ghobary Marwa Salah Farhan Hany Ahmed Fouad Youssef Abdel‐Aziz Youssef | 2013 | Clin Transplant2013，，4： | 2 |
| 3 | Geochemistry of lamprophyres associated with uranium mineralization, Southeastern Desert, Egypt显示文摘Two brecciated shear zones (NNW-SSE) are found crosscutting cataclastic rocks. The cataclastic rocks (3.0 km2) occupy the core of the granitic pluton and enclose a roof pendant of mafic-ultramafic rocks. The NNW-SSE-extending lamprophyre dykes vary in thickness from 0.5 m to 1 m and up to 800 m long, cutting the cataclastic rocks and are composed mainly of plagioclases, amphiboles, relics of pyroxenes and K-feldspar phenocrysts embedded in fine-grained groundmass. They are characterized as being peraluminous, calc-alkaline in composition (chemical trap) and enriched in calcite, sulfide and P2O5. The lamprophyres were affected by hydrothermal alteration (chlorite-carbonate alteration) while the cataclastic rocks were affected by diagenetic alteration (K-feldspar-albite alteration). Uranium mineralization is the product of hydrothermal events and has been investigated by X-ray diffraction (XRD) and environmental scanning electron microscopy (ESEM), involving primary uranium minerals (U3O8) and secondary uranium minerals (uranophane and beta-uranophane, kasolite, torbernite, autonite and meta-autonite) in addition to U- bearing minerals (astrocyanite, betafite and fergusonite). The presence of different mineral parageneses associated with clay minerals indicates that the lamprophyres were subjected to acidic and alkaline mineralizing solutions. Moreover, the U-Zr/U, U-Ce/U values show negative correlations, confirming U-enrichment in both cataclastic rocks and shear zones while the Th-eU/eTh, Th-Zr/Th and Th-Ce/Th values show negative correlations, indicating that the U-bearing solutions are rich in Th in the cataclastic rocks only. | Mohamed E. Ibrahim Mohamed M. El-Tokhi Gehad M. Saleh Mamdouh A. Hassan Mohamed A. Rashed | 2007 | Chinese Journal Of Geochemistry2007，26，4： | 2 |
| 4 | Copper-immobilized platinum electrocatalyst for the effective reduction of nitrate in a low conductive medium: Mechanism, adsorption thermodynamics and stability显示文摘 | M.A. Hasnat S. Ben Aoun S.M. Nizam Uddin M.M. Alam P.P. Koay S. Amertharaj M.A. Rashed Mohammed M. Rahman N. Mohamed | 2014 | Applied Catalysis A General2014，，： | 1 |
| 5 | Nonlinear adaptive state-feedback speed control of a voltage-fed induction motor with varying parameters显示文摘 | Mohamed Rashed Peter F A MacConnell A Fraser Stronach | 2006 | IEEE Trans on Industry Application2006，42，3： | 1 |
| 6 | The role of trace elements on hepatitis virus infections: A review显示文摘 | Mohamed Nageeb Rashed | 2011 | Journal of Trace Elements in Medicine and Biology2011，，3： | 1 |
| 7 | Prevalence of Candida colonization in preterm newborns and VLBW in neonatal intensive care unit: role of maternal colonization as a risk factor in transmission of disease显示文摘 | Gihan Yousef Ali Eglal Hussein S. S. Algohary Khalid Ahmed Rashed Mohammed Almoghanum Azza AbdelRahman Khalifa | 2012 | Journal of Maternal-Fetal and Neonatal Medicine2012，，6： | 1 |
| 8 | Estimated Optimization Parameters of Arrayed Waveguide Grating (AWG) for C-Band Applications 显示文摘 | MOHAMMED A RASHED A ABD A | 2009 | International Journal of Physical Sciences2009，4，4： | 1 |
| 9 | Microwave ablation versus transarterial chemoembolization in large hepatocellular carcinoma: prospective analysis显示文摘 | Ashraf Omar Abdelaziz Mohamed Mahmoud Nabeel Tamer Mahmoud Elbaz Hend Ibrahim Shousha Eman Medhat Hassan Sherif Hamdy Mahmoud Noha Ali Rashed Mostafa Mohamed Ibrahim Ahmed Hosni Abdelmaksoud | 2014 | Scandinavian Journal of Gastroenterology2014，，4： | 1 |
| 10 | Vascular endothelial growth factor before and after locoregional treatment and its relation to treatment response in hepatocelluar carcinoma patients显示文摘Objective:To evaluate vascular endothelial growth factor(VEGF)levels in hepatocellular carcinoma patients before and after transcatheter arterial chemoembolization(TACE)and percutaneous ethanol injection(PEI)and its relation to treatment response.Methods:A total of 40 patients with unrespectable hepatocelluar carcinoma were assessed clinically.Twenty patients were suitable to be treated by TACE,while other 20patients were treated with PEI.Serum VEGF levels were measured before and 1 month after each procedure by ELISA.Response was assessed after 1 month according to Union Internationale Contre le Cancer evaluation criteria based on change in tumor size as measured by ultrasound.Results:There was no significant difference between TACE and PEI groups with regard to age,sex,tumor size,response to local therapy,or VEGF and alpha-fetoprotein before and after therapy.VEGF levels after TACE were significantly higher than before TACE[(298.1±123.6)pg/m L vs.(205.8±307.3)pg/m L;P=0.001].Also,VEGF levels were significantly higher after PEI than before PEI[(333.8±365.6)pg/m L vs.(245.3±301.8)pg/m L;P=0.000].Non-responders of both groups had significantly high VEGF levels than responder's,both before[(985.0±113.2)pg/m L vs.(117.1±75.3)pg/m L;P<0.001]and after therapy[(1 330.6±495.7)pg/m L vs.(171.0±94.7)pg/m L;P=0.000)].Conclusions:Both TACE and PEI were associated with an increase in serum VEGF in hepatocelluar carcinoma patients.Higher levels of VEGF before and after therapy were found in non-responders,suggesting that VEGF is a useful marker in predicting treatment response. | Heba Sedrak Noaman El-Garem Mervat Naguib Heba El-Zawahry Mohamed Esmat Lila Rashed | 2015 | Asian Pacific Journal of Tropical Biomedicine2015，5，12： | 1 |
| 11 | Parasitic Contamination of Commonly Consumed Fresh Leafy Vegetables in Benha, Egypt显示文摘 | Maysa Ahmad Eraky Samia Mostafa Rashed Mona El-Sayed Nasr Azza Mohammed Salah El-Hamshary Amera Salah El-Ghannam Alvin A. Gajadhar | 2014 | Journal of Parasitology Research2014，，： | 1 |
| 12 | Knowledge, Attitudes, Beliefs and Practices about HIV/AIDS in Kuwait显示文摘 | Rashed A I-Owaish Mohamed A A Moussa | 1999 | A IDSE ducation and Prevention1999，11，2： | 1 |
| 13 | Spectral sensitivity coefficients (SSCs) of the based materials for photonic devices under optical wavelength and temperature sensing variations in modern optical access networks显示文摘 | Abd El-Naser A Mohammed Ahmed Nabih Zaki Rashed Abd El-Fattah A Saad | | 0，，04： | 1 |
| 14 | A multi-purpose National Forest Inventory in Bangladesh:design,operationalisation and key results显示文摘Background:National forest inventory and forest monitoring systems are more important than ever considering continued global degradation of trees and forests.These systems are especially important in a country like Bangladesh,which is characterised by a large population density,climate change vulnerability and dependence on natural resources.With the aim of supporting the Government’s actions towards sustainable forest management through reliable information,the Bangladesh Forest Inventory(BFI)was designed and implemented through three components:biophysical inventory,socio-economic survey and remote sensing-based land cover mapping.This article documents the approach undertaken by the Forest Department under the Ministry of Environment,Forests and Climate Change to establish the BFI as a multipurpose,efficient,accurate and replicable national forest assessment.The design,operationalization and some key results of the process are presented.Methods:The BFI takes advantage of the latest and most well-accepted technological and methodological approaches.Importantly,it was designed through a collaborative process which drew from the experience and knowledge of multiple national and international entities.Overall,1781 field plots were visited,6400 households were surveyed,and a national land cover map for the year 2015 was produced.Innovative technological enhancements include a semi-automated segmentation approach for developing the wall-to-wall land cover map,an object-based national land characterisation system,consistent estimates between sample-based and mapped land cover areas,use of mobile apps for tree species identification and data collection,and use of differential global positioning system for referencing plot centres.Results:Seven criteria,and multiple associated indicators,were developed for monitoring progress towards sustainable forest management goals,informing management decisions,and national and international reporting needs.A wide range of biophysical and socioeconomic data were collected,and in some cases integrated,for estimating the indicators.Conclusions:The BFI is a new information source tool for helping guide Bangladesh towards a sustainable future.Reliable information on the status of tree and forest resources,as well as land use,empowers evidence-based decision making across multiple stakeholders and at different levels for protecting natural resources.The integrated socioeconomic data collected provides information about the interactions between people and their tree and forest resources,and the valuation of ecosystem services.The BFI is designed to be a permanent assessment of these resources,and future data collection will enable monitoring of trends against the current baseline.However,additional institutional support as well as continuation of collaboration among national partners is crucial for sustaining the BFI process in future. | Matieu Henry Zaheer Iqbal Kristofer Johnson Mariam Akhter Liam Costello Charles Scott Rashed Jalal Md.Akhter Hossain Nikhil Chakma Olaf Kuegler Hossain Mahmood Rajib Mahamud Mohammad Raqibul Hasan Siddique Khaled Misbahuzzaman Mohammad Main Uddin Mohammed Al Amin Farid Uddin Ahmed Gael Sola Md.Baktiar Siddiqui Luca Birigazzi Mahmudur Rahman Ilias Animon Saimunnahar Ritu Laskar Muqsudur Rahman Aminul Islam Heather Hayden Frida Sidik Mondal Falgoonee Kumar Rakibul Hassan Mukul Hossain Nishad Ariful Hoque Belal Asif Reza Anik Abdul Khaleque Md.Shaheduzzaman Syed Shahadat Hossain Tariq Aziz Md.Tauhidor Rahaman Ruhul Mohaiman Patrick Meyer Purnata Chakma A.Z.M.Manzoor Rashid Sourav Das Shrabanti Hira Mohammed Jashimuddin Mohammad Mahfuzur Rahman Karl Wurster Sarder Nasir Uddin Abul Kalam Azad S.M.Zahirul Islam Laurent Saint-André | 2021 | Forest Ecosystems2021，8，1： | 0 |
| 15 | Safety and efficacy of posterior sub-Tenon's carboplatin injection versus intravitreal melphalan therapy in the management of retinoblastoma with secondary vitreous seeds显示文摘AIM: To evaluate the safety and efficacy of posterior sub-Tenon's carboplatin injection compared to intravitreal melphalan injection in the management of retinoblastoma(RB) with secondary vitreous seeds. The outcome measures were vitreous seeds regression, need for other treatment modalities to achieve ocular salvage and treatment side effects.METHODS: A prospective interventional comparative nonrandomized study included RB eyes developed secondary vitreous seeds during the period of follow up. They subdivided into two groups: study group I where posterior sub-Tenon's carboplatin(20 mg/2 m L) was injected and study group II where intravitreal melphalan(20 μg/0.1 m L) was injected. The injections repeated every 2-4 wk.RESULTS: Thirty-three eyes were included in the study. Seventeen eyes(16 patients) in study group I and 16 eyes(16 patients) in study group II. Ten eyes(30.3%) were completely salvaged following local chemotherapies. Ocular salvage was 23.5% following posterior sub-Tenon's carboplatin injection versus 37.5% following intravitreal melphalan raised to 47.1% and 75% with addition of external beam radiotherapy(EBR) with no statistically significant difference between the study groups(P=0.16). A statistically significant correlation was found between ocular salvage rate and type of vitreous seeds either dust, spheres and clouds(r=0.42, P=0.015) and eyes harbor new solid tumor growth(r=0.35, P=0.045). The mean and median follow up periods following local chemotherapy injections were 2.0 y in the study group I and 2.37 y in the study group II. Few complications were reported: periorbital edema in all eyes and ocular motility disturbances in 13 eyes(76.5%) following posterior sub-Tenon's carboplatin injection. Vitreous hemorrhage developed in 2 eyes(12.5%) and localized retinopathy in 5 eyes(31.25%) following intravitreal melphalan.CONCLUSION: Local chemotherapy for treatment of RB with secondary vitreous seeds is safe and can salvage 30.3% of eyes without EBR. There is a superiority of intravitreal melphalan in ocular salvage however, no statistically significant difference between both groups. | Azza Mohamed Ahmed Said Mohamed Gamil Al Hazem Omar Rashed Anwaar Mahmoud Rady | 2018 | International Journal of Ophthalmology(English edition)2018，11，3： | 0 |
| 16 | Burnout during pandemic COVID-19 in Saudi and non-Saudi nurses in King Abdulaziz hospital,Makkah显示文摘Background:COVID-19 put the global health system in a disastrous situation.Nursing plays a vital role in healthcare services.The ratio of burnout increased during this period.In the context of Saudi Arabia,nurses’whether these are Saudi or non-Saudi the burnout due to emotional exhaustion,depersonalization,and personal accomplishment,the situation of burnout could be there.It is,therefore,important to understand the phenomenon of nurse burnout and the factors that contribute to it.This study aims to understand burnout among nurses and the factors that affect nurses during the COVID-19 pandemic.Methods:The design of this study was quantitative cross-sectional and correlational.This study population included 255 nurses working in the King Abdulaziz hospital,Makkah,in 2021.Self-administered questionnaire(google forms)was distributed through email and WhatsApp.Statistical analysis system version 9.4 for data analysis and reporting.Result:Most of the nurse participants were in the age range 31-40,were females and were Saudi nationals.A Chi-square analysis showed a significant burnout level on the sub-scale of emotional exhaustion and personal accomplishment,while a partial burnout level was observed on the sub-scale of depersonalization.The level of burnout was higher and more significant among Saudi nurses compared to non-Saudi nationals.The impact of demographic variables on burnout showed that nationality,level of education,and duty type were the most influential and significant variables in burnout among Saudi and non-Saudi nurses.Conclusion:The findings indicated that nurses’burnout is higher during COVID-19 and is closely related to their working hours.In addition,when nurses are more nervous and depressed,a higher level of burnout will be witnessed.Since depression and frustration are influenced by working hours,attention should be given to this factor,focusing on interventions to alleviate the causes that lead to nurses’burnout. | Majda Rashed Khairi Mashael Abdulnasser Ahmad Abdulrahman Mohammed Salah Alshmemri May Hassan Bagadood Sanaa Awwad Alsulami | 2023 | Nursing Communications2023，7，1： | 0 |
| 17 | Coal rib response during bench mining: A case study显示文摘In 2016, room-and-pillar mining provided nearly 40% of underground coal production in the United States.Over the past decade, rib falls have resulted in 12 fatalities, representing 28% of the ground fall fatalities in U.S.underground coal mines.Nine of these 12 fatalities(75%) have occurred in room-andpillar mines.The objective of this research is to study the geomechanics of bench room-and-pillar mining and the associated response of high pillar ribs at overburden depths greater than 300 m.This paper provides a definition of the bench technique, the pillar response due to loading, observational data for a case history, a calibrated numerical model of the observed rib response, and application of this calibrated model to a second site. | Morgan M.Sears John Rusnak Mark Van Dyke Gamal Rashed Khaled Mohamed Michael Sloan | 2018 | International Journal of Mining Science and Technology2018，28，1： | 0 |
| 18 | Performance evaluation of a WDM/OCDM based hybrid optical switch utilizing efficient resource allocation显示文摘A hybrid optical switch(HOS) with physical layer of wavelength division multiplexing and optical code division multiplexing(WDM/OCDM) scheme is proposed. An additional feature to the HOS than optical cross connect(OXC) is that the controller can process requests for both circuit establishment and burst scheduling. In our study, the measurement criteria of HOS are the blocking probability, probability of error, and probability of outage. To simplify the analysis, no distinction is made between a circuit in progress and a burst in progress. Moreover, a minimum fit(MinF) resource allocation strategy is applied in order to increase the bandwidth efficiency and control the multiplexing interference of the OCDM. A 2D Markov model for the HOS is presented using the MinF strategy. Numerical results reveal that the code parameters and the resource allocation strategy greatly affect the performance. Certain periority can be achieved by assigning shorter codes to high periority users and longer codes to low periority users. Also,the probability of error and outage are reduced by appling the MinF strategy. | Ahmed Nabih Zaki Rashed Abd-Elnaser A. Mohammed Osama M.A. Dardeer | 2014 | Chinese Optics Letters2014，12，5： | 0 |
| 19 | A NEW CONCEPT AND EXHIBITION PROGRAM FOR THE EGYPTIAN MUSEUM IN CAIRO显示文摘This article presents a new concept for the future permanent display of the Egyptian Museum in Cairo, and discusses different practical ideas and concepts. Throughout the discussion, recent challenges and opportunities are considered, particularly the conflicts and duplication among the three major museums in Greater Cairo, the Egyptian Museum(EMC), the Grand Egyptian Museum(GEM), and the National Museum of Egyptian Civilization(NMEC). Different ideas are introduced, while selected options are then discussed. The author argues his suggestion to develop a concept that combines archaeological fieldwork, masterpieces, and visible storage in a presentation that varies from aesthetic, contextual and systematic display. This comes from the author's understanding of the expected audiences, their interests, the strengths of the collection, the exhibition space, and EMC's mission. | Mohamed Gamal Rashed | 2018 | Journal of Ancient Civilizations2018，33，1： | 0 |
| 20 | Preliminary rib support requirements for solid coal ribs using a coal pillar rib rating(CPRR)显示文摘Researchers from the National Institute for Occupational Safety and Health(NIOSH)are developing a coal pillar rib rating(CPRR)technique to measure the integrity of coal ribs.The CPRR characterizes the rib composition and evaluates its impact on the inherent stability of the coal ribs.The CPRR utilizes four parameters:rib homogeneity,bedding condition,face cleat orientation with respect to entry direction,and rib height.All these parameters are measurable in the field.A rib data collecting procedure and a simple sheet to calculate the CPRR were developed.The developed CPRR can be used as a rib quality mapping tool in underground coal mines and to determine the potential of local rib instabilities and support requirements associated with overburden depth.CPRR calculations were conducted for 22 surveyed solid coal ribs,mainly composed of coal units.Based on this study,the rib performance was classified into four categories.A preliminary minimum primary rib support density(PRSD)line was obtained from these surveyed cases.Two sample cases are presented that illustrate the data collection form and CPRR calculations. | Khaled Mohamed Mark Van Dyke Gamal Rashed Morgan MSears Robert Kimutis | 2021 | International Journal of Mining Science and Technology2021，31，1： | 0 |
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