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Tawfik, W., W. A. Farooq, F. N. Al-Mutairi, and Z. A. Alahmed, "Monitoring of inorganic elements in desert soil using laser-induced breakdown spectroscopy", Lasers in Engineering, vol. 32, no. 1-2: Old City Publishing, pp. 129-140, 2015. AbstractWebsite

In this study, the quantitative analysis of inorganic elemental contents available in desert soil are studied using a one step method: laser-induced breakdown spectroscopy (LIBS) technique. LIBS parameters were optimized to achieve high sensitivity measurements. It was found that focusing 50 mJ of fundamental wavelength Nd:YAG laser pulses onto soil samples enhanced the signal to background ratio at detection delay of 1 ms. The atomic spectral lines for Na, Mg, Si, Al, Fe, Mn and Si were resolved. The calibration curves for Na, Mg, Si, Al, Fe, Mn and Si were observed, with correlation coefficient, R2, values around 0.9. The obtained results are not only important for non-destructive in situ environmental analysis but also in space exploration applications. © 2015 Old City Publishing, Inc.

Tawfik, W., W. A. Farooq, F. N. Al-Mutairi, and Z. A. Alahmed, "Monitoring of Inorganic Elements in Desert Soil Using Laser-induced Breakdown Spectroscopy.", Lasers in Engineering (Old City Publishing), vol. 32, 2015. Abstract
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Tawfik, W., W. A. Farooq, F. N. Al-Mutairi, and Z. A. Alahmed, "Monitoring of Inorganic Elements in Desert Soil Using Laser-induced Breakdown Spectroscopy.", Lasers in Engineering (Old City Publishing), vol. 32, 2015. Abstract
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Tawfik, N. M., M. E. Deeb, and A. S. Nasr, "Monoclonal gammopathy among patients with chronic hepatitis C virus infection.", American journal of the medical sciences, vol. 345, issue 5, pp. 366-368, 2013. Abstract

Background: An association between monoclonal gammopathies and chronic liver diseases has been previously reported. Hence, the objective of this study was to determine the prevalence of monoclonal gammopathies in patients with chronic hepatitis C virus (HCV) infection in Egypt.

Methods: This is a prospective study of 200 HCV-positive and 100 HCV-negative patients with chronic liver diseases recruited consecutively at the Kasr El Aini Hospital Departments of Internal Medicine and Hematology, Cairo University. Clinical data were gathered, serum protein electrophoresis was performed and immunoelectrophoresis was carried out for the detection of monoclonal component. Histological examination of bone marrow was performed in patients with monoclonal gammopathy.

Results: A monoclonal band was detected in 2% of the HCV-positive patients and in 0% of the HCV-negative patients (P > 0.05).

Conclusions: In this study, 4 cases of monoclonal gammopathy of undetermined significance were observed in the HCV-positive group, whereas none was observed in the HCV-negative group, which supports prior observations that HCV infection is associated with an excess risk for monoclonal gammopathy of undetermined significance.

Tawfik, A. M., O. M. Shalabiea, M. S. El‐Nawawy1, and T. Yamamoto, "Magnetic components of upstream three second waves", AIP Conference Proceedings, vol. 748, issue 1, pp. 428, 2005. magnetic_components_of_upstream_three_second_waves.pdf
Tawfik, W., W. A. Farooq, F. N. Al-Mutairi, and Z. A. Alahmed, "Monitoring of Inorganic Elements in Desert Soil Using Laser-induced Breakdown Spectroscopy.", Lasers in Engineering (Old City Publishing), vol. 32, 2015. Abstract
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Tawfik, A. M., O. M. Shalabiea, M. S. El-Nawawy, and T. Yamamoto, "Magnetic components of upstream three second waves", AIP Conference Proceedings, vol. 748, no. 1: AIP, pp. 428–434, 2005. Abstract
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Tawfik, W., "A method for controlling the bandwidth of high-energy, few optical-cycle laser pulses tunable from the visible to the nearinfrared", Ukrainian Journal of Physical Optics, vol. 16, no. 4: Institute of Physical Optics, pp. 147-157, 2015. AbstractWebsite

In this work we report a new method for controlling the bandwidth of few-cycle optical pulses, using another femtosecond laser pulses chirped in a neonfilled hollow-core fibre. The observed bandwidth varies from 25 to 234 nm in the optical wavelength region 600–950 nm. The pulse energy has for the first time reached a sub-millijoule frontier at 1 kHz. The input pulses are positively chirped using a chirped-pulse amplifier to acquire the widths 32–56 fs at the entrance of the hollow fibre. Then the pulses are highly dispersed due to a self-phase modulation in a nonlinear medium (a neon gas) followed by a pair of chirped mirrors that compensate the dispersion. We have found that this scheme allows for direct tuning of the output-pulse bandwidth while varying the chirping of the input pulses under different neon-gas pressures. Our results can give an opportunity for controlling the interactions in strong electric fields on the ultrafast time scales and are crucial for regenerating attosecond X-ray pulses. © 2015 Institute of Physical Optics. All rights reserved.

Tawfik, N. M., N. T. Zeini, N. M. Kadry, and N. M. Hatem, "Measuring Achievement Towards MDGs: A Multidimensional Perspective", The 24th annual conference on statistics and computer modeling in human and social sciences, statistics department, faculty of economics and political science, Cairo University, Egypt., Giza, Egypt, Statistics Department, Faculty of Economics and Political Sciece, Cairo Univerity, 2011. Abstractmeasuringachievementtowardsmdgs.pdf

When the phenomenon under study has many dimensions, one approach in studying such phenomenon is the construction of a composite index.
In this study, a Millennium Development Goals (MDGs) overall Progress Index is constructed to assess the progress of Egyptian governorates towards achieving the first five MDGs. The status of MDGs is captured from the global perspective and the national perspective. Using SPSS and STATA software, secondary analysis of the existing 2000, 2005 and 2008 HIECS data is conducted.
Upon calculating specific MDG indicators, evidence of dramatic achievements by many governorates is found, such as Port Said, Suez, and Damietta. Such performance suggests that the governorates may achieve most of the highly ambitious MDGs. Moreover, Lower Egypt accounts for many of the star MDG performers. Not surprisingly, the list of laggards largely consists of governorates devastated by poverty, such as Assiut. Most governorates fall somewhere in between, demonstrating solid progress on some indicators and little on others.

Taylor, R. M., C. Bright, R. Martil, and R. de Hoog, The management of knowledge-based systems development and maintenance under {KADS}-{II}, : Cambridge University Press, pp. 52–66, 1991. Abstract
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Tchou, P., M. Kanj, and M. Bassiouny, "Mahaim Pathway-Mediated Tachycardia", Practical Electrophysiology: Cardiotext Publishing, pp. 237, 2014. Abstract
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Teama, D. G., MSc, , Giza, Cairo University, 2003. dteama_resume.docdteama_-_msc_thesis.pdf
Teleb, D. F., M. K. Gabr, and K. M. Gaafar, "Manipulation of lactation and suckling on the resumption of postpartum reproductive activity in Damascus goats", Small Ruminant Research - SMALL RUMINANT RES, vol. 49, issue 2, pp. 183-192, 2003. Abstract

The reproductive activity of Damascus goats was studied in does that were not allowed to mate (non-lactating does) (Group C) and lactating does with different suckling treatments (Groups A and B). Time resumption of sexual activity was not significantly different between lactating and non-lactating does or between does’ groups of different suckling treatments. All does started to demonstrate estrous behavior during autumn (September). In Groups A, B and C the mean length of the estrous cycle was 19.0±0.6, 19.5±0.3 and 22.0±2.0 days, duration of the estrous period 29.6±3.0, 31.0±5.3 and 25.3±5.8h, mean corpus luteum (CL) counts 1.6±0.2, 1.8±0.2 and 1.8±0.3, while mean litter size was 1.1±0.1, 1.2±0.2 and 1.3±0.5, respectively.In the three groups an increase in the plasma progesterone concentrations started from summer (mid-June), indicating the occurrence of one or more ovulatory anestrus (silent ovulation). Plasma prolactin levels were higher (P

Temerak, M., S. Hibbert, and H. Winklhofer, "Managing customer participation through customer education", The 2009 Naples Forum on Service-Dominant Logic, Service Science and Network Theory, Capri, Italy., 2009.
Temerak, M. S., S. Hibbert, and H. Winklhofer, "Managing customer participation through customer education", r participation through customer education: A future research agenda,” The 2010 American Marketing Association Summer Conference, Boston, USA.  Temerak, M., Hibbert, S. & Winklhofer , H. (2009), “Bridging the gap between customer education and customer c, Capri, Italy, European Insitute for Advanced Studies in Management , pp. 1-7, 2009.
Temerak, M., S. Hibbert, and H. Winklhofer, "Managing customer participation through customer education: A future research agenda", American Marketing Association Summer Conference, Boston, USA., American Marketing Association, 2010.
Temerak, M. S., S. Hibbert, and H. Winklhofer, "Managing customer participation through customer education: A future research agenda", American Marketing Association, Summer Conference, Boston, USA, American Marketing Association, pp. 1-2, 2010.
Thabet, G., S. E. Salem, M. E. M. Gammal, and E. R. Radwan, "MDR1 (C3435T) polymorphism: Impact on therapeutic outcome in breast cancer", Journal of Kase Elinin Faculty of medicicne, vol. 2013, 2013.
Thabet, R. H., M. K. Fouad, I. A. Ali, S. A. Elsherbiney, and M. A. Tony, "Magnetite-based nanoparticles as an efficient hybrid heterogeneous adsorption/oxidation process for reactive textile dye removal from wastewater matrix", International Journal of Environmental Analytical Chemistry, vol. 103, issue 11: Taylor & Francis, pp. 2636-2658, 2023. Abstract
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Thabet, R. H., M. K. Fouad, I. A. Ali, S. A. Elsherbiney, and M. A. Tony, "Magnetite-based nanoparticles as an efficient hybrid heterogeneous adsorption/oxidation process for reactive textile dye removal from wastewater matrix ", International Journal of Environmental Analytical Chemistry, vol. 102, 2021.
Thabet, R. H., M. K. Fouad, S. A. El Sherbiny, and M. A. Tony, "Multivariate-Parameters Effect of Dewatered Aluminium-Based Sludge in Catalytic Oxidation into Wastewater Treatment with A Special Strategy for Solar Energy Application", Journal of Physics: Conference Series, vol. 2305, issue 1: IOP Publishing, pp. 012036, 2022. Abstract
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Thabet, N. S., and H. M. Kamal, "Modulation of Balance and Gait in Children with Down Syndrome via Gravity Force Stimulation Program Training ", Bull. Fac. Ph. Th. Cairo Univ., vol. 16, issue 2, pp. 87-98, 2011. Abstractejmhg53.pdf

Background and purpose: Down Syndrome (DS) is one of genetic disorders characterized by some common clinical and functional features. Most children with Down syndrome have deficits in balance, co-ordination, and gait throughout childhood and adulthood. So, it is essential to seek an ideal physical therapy program to help in solving such widespread problem. The purpose of this study was to examine the effects of twelve- week Gravity Force Stimulation (GFS) program on balance and gait in children with Down syndrome. Subjects: Thirty children with DS from both sexes, ranging in age from eight to ten years represented the sample of this study. They were divided randomly into two groups of equal number A (control) and B (study). Procedures: Evaluation before and after three months of treatment for each child of the two groups was conducted via using Biodex stability system to evaluate balance and using foot print method to evaluate selected gait variables (stride length and step width). Group A received a selected exercise program, while group B received GFS program training in addition to the same exercise program given to group A. Results: The results revealed no significant differences in all the measured variables when comparing the pre-treatment results of the two groups, while significant improvement was observed in the two groups when comparing their pre and post-treatment mean values. Significant difference was also observed when comparing the post-treatment results of the two groups in favor of group B. Discussion and Conclusion: Gravity Force Stimulation program utilization provides sensory feedback and may be used as a therapeutic intervention for improving balance and gait in children with DS. Key words: Down Syndrome, Gravity Force Stimulation, Balance, Gait Parameters.