Export 47 results:
Sort by: [ Author  (Asc)] Title Type Year
A B C D E F G H I J K L M N O P [Q] R S T U V W X Y Z   [Show ALL]
Qadee, S. E., O. Helmy, T. Almorsy, and M. Ramadan, "MALDI-TOF MS BIOTYPER AND POLYMERASE CHAIN REACTION FOR RAPID IDENTIFICATION OF STAPHYLOCOCCUS AUREUS AND PSEUDOMONAS AERUGINOSA IN NON-STERILE PHARMACEUTICAL PREPARATIONS", International journal of Pharmaceutical sciences and research, vol. 9, issue 9, pp. 3656-3663, 2018. 8-vol.-9-issue-9-sep-2018-ijpsr-ra-9618_1.pdf
Qadhi, T. M., A. H. Ahmed, and A. A. Surour, Industrial Minerals and Rocks, and their Uses (in Arabic) المعادن والصخور الصناعية واستخداماتها, , Jeddah, King Abdulaziz university (Saudi Arabia), 2011. glf_ktb_mdn_wskhwr_sny.pdf
Qarmout, S., N. N. Makhlouf, Z. Elcheikh, and M. A. Salheen, "Biogas as a Model for Urban Environmental Quality in Informal Areas", Building Simulation Cairo 2013 - Towards Sustainable & Green Built Environment, Cairo, Egypt, 24th June, 2013.
qawy, D. A., A. Kamel, and F. Omara, "A Survey on Testing Concurrent and Multi-Threaded Applications Tools and Methodologies", The International Conference on Informatics & Applications (ICIA2012), Malaysia, pp. 459-471, 2012.
Qi, X., Z. Li, M. Akami, A. Mansour, and C. Niu, "Fermented crop straws by Trichoderma viride and Saccharomyces cerevisiae enhanced the bioconversion rate of Musca domestica (Diptera: Muscidae).", Environmental science and pollution research international, vol. 26, issue 2019, pp. 29388–29396, 2019. AbstractWebsite

Crop straw is an abundant renewable resource whose usage is limited due to its high cellulose, hemicellulose, and lignin contents. Here, Trichoderma viride, Saccharomyces cerevisiae, and Musca domestica were used to transform crop straws, and we investigated their impact on housefly rearing performance and optimized their utilization. The weights of cellulose, hemicellulose, and lignin in fermented crop straw diets significantly decreased after bioconversion by M. domestica larvae. The highest bioconversion rate was recorded in corn straw diet (16.19%), followed by wheat straw diet (10.31%) and wheat bran diet (8.97%). Similarly, high larval weight (yield) and pupation rate and fecundity and fertility rate were recorded in fermented crop straw diets composed of corn straw and wheat bran in 1:1 proportions. These results indicated that fermenting crop straw with T. viride and S. cerevisiae represented an efficient strategy that enhanced crop straw bioconversion and improved the rearing capacity of the housefly larvae. The resulting larvae could further be used as proteinaceous feed in poultry and aquaculture industries. Graphical abstract.

Qian, D., A. E. - M. M. El-Sharkawy, E. Atalar, and P. A. Bottomley, "Interventional MRI: tapering improves the distal sensitivity of the loopless antenna.", Magnetic resonance in medicine, vol. 63, issue 3, pp. 797-802, 2010 Mar. Abstract

The "loopless antenna" is an interventional MRI detector consisting of a tuned coaxial cable and an extended inner conductor or "whip". A limitation is the poor sensitivity afforded at, and immediately proximal to, its distal end, which is exacerbated by the extended whip length when the whip is uniformly insulated. It is shown here that tapered insulation dramatically improves the distal sensitivity of the loopless antenna by pushing the current sensitivity toward the tip. The absolute signal-to-noise ratio is numerically computed by the electromagnetic method-of-moments for three resonant 3-T antennae with no insulation, uniform insulation, and with linearly tapered insulation. The analysis shows that tapered insulation provides an approximately 400% increase in signal-to-noise ratio in trans-axial planes 1 cm from the tip and a 16-fold increase in the sensitive area as compared to an equivalent, uniformly insulated antenna. These findings are directly confirmed by phantom experiments and by MRI of an aorta specimen. The results demonstrate that numerical electromagnetic signal-to-noise ratio analysis can accurately predict the loopless detector's signal-to-noise ratio and play a central role in optimizing its design. The manifold improvement in distal signal-to-noise ratio afforded by redistributing the insulation should improve the loopless antenna's utility for interventional MRI.

Qindeel, R. A. B. I. A., L. G. Bousiakou, W. Tawfik, W. A. Farooq, N. H. Alonizan, S. Alsaleh, and D. Siachos, "Trace element analysis using ICP-MS in the shallow aquifers of the Haier region, Saudi Arabia", Middle-East Journal of Scientific Research, vol. 23, no. 8, pp. 1941–1948, 2015. Abstract
Qindeel, R., and W. Tawfik, "Measurement of plasma characteristics of the optically generated copper plasma by laser spectroscopy technique", Optoelectronics and Advanced Materials, Rapid Communications, vol. 8, no. 7-8: National Institute of Optoelectronics, pp. 741-746, 2014. AbstractWebsite

Laser-induced breakdown spectroscopy (LIBS) or laser induced plasma spectroscopy (LIPS) technique has been applied to investigate plasma characterization of pure copper in air. The fundamental wavelength of Q-switched Nd:YAG laser beam was focused on the copper target with intensity of about 6.6 × 108 W/cm2 to generate the plasma. The laser intensity was optimized to avoid air breakdown on the target surface. The generated Cu plasma plume was monitored with CCD camera and the emission is analyzed with an Ophir WaveStar spectrometer. The plasma temperature is calculated as 10100 K while plasma density is 5.4 × 1017 cm-3. The CCD observed image of the constructed plasma plume showed that it is oblate shape rather than expected spherical nature. The observed results revealed the spatial distribution of the generated plasma plume expansion towards the laser beam that depends on the plasma properties. The observed ablation profile with the number of laser pulses is also studied. © 2014, National Institute of Optoelectronics. All right reserved.

Qindeel, R. A. B. I. A., W. Tawfik, and others, "Measurement of plasma characteristics of the optically generated copper plasma by laser spectroscopy technique", Optoelectron. Adv. Mater. Rapid Commun, vol. 8, pp. 741–746, 2014. Abstract
Qiu, S. G., S. Krishnan, N. el-Guendy, and V. M. Rangnekar, "Negative regulation of Par-4 by oncogenic Ras is essential for cellular transformation.", Oncogene, vol. 18, issue 50, pp. 7115-23, 1999 Nov 25. Abstract

Oncogenic variants of the cellular Ras protein are often associated with different types of human cancers. However, the mechanisms by which oncogenic Ras induces transformation are not fully established. Expression of the transcriptional repressor Par-4 was down-regulated by oncogenic Ras via the Raf-MEK-ERK pathway. Restoration of Par-4 levels by abrogation of the Raf-MEK-ERK pathway with the MEK-inhibitor PD98059 or by ectopic Par-4, that acted to inhibit ERK expression and activation, was sufficient to suppress oncogenic Ras-induced transformation. These findings identify Par-4 as a novel target that has to be down-modulated by oncogenic Ras for successful transformation.

Qot, E., Abdulsamad, and M. F. Aly, "Upper Cretaceous macrofossils from Jardas al'Abid area, Al Jabal Al Akhadar northeast Libya: A systematic palaeontology", Egypt. Jour. Paleontol. , vol. 13, pp. 185-254, 2013.
Qotb, M., "Impact of Family Orientation on the Venture Success: A Comparative Study Between the Urban & Rural Areas of Egypt", International Business Conference , Brunel University, London, UK. , 2018.
Qotb, M., "Impact of Facebook Study Groups on Learners' Satisfaction", 3rd International Education Conference , Ain Shams University , 2018.
Qotb, M., M. Shohaieb, and A. Abbas, "Obstacles and Problems facing launching and growing of start-ups in the Egyptian environment", CUCBS, Cairo, Egypt, 2017.
Qotb, M., M. Shohaieb, and A. Abbas, "Women's Entrepreneurship", ISBE, Paris, France, 2016.
Qotob, M. A., M. A. Nasef, H. K. A. Elhakim, O. G. Shaker, N. R. Habashy, and I. A. Abdelhamid, "Integrated effect of plant growth regulators with boron sources on some biological parameters of sugar beet", Plant Archives, vol. 20, issue 1: Cold Spring Harbor Laboratory, pp. 1783-1793, 2020. Abstract
Qotob, M. A., M. A. Nasef, H. K. A. Elhakim, O. G. Shaker, N. R. Habashy, and I. A. Abdelhamid, "INTEGRATED EFFECT OF PLANT GROWTH REGULATORS WITH BORON SOURCES ON SOME BIOLOGICAL PARAMETERS OF SUGAR BEET", Plant Archives, vol. 20, issue 1, pp. 1783-1793, 2020.
Qotob, M. A., M. A. Nasef, H. K. A. Elhakim, O. G. Shaker, and I. A. Abdelhamid, "Revisiting of chemical fertilizers by using suitable plant growth regulators and nano fertilizer", GSJ, vol. 8, issue 11, 2020. Abstract
Qotob, M. A., M. A. Nasef, H. K. A. Elhakim, O. G. Shaker, and I. A. Abdelhamid, "Revisiting of chemical fertilizers by using suitable plant growth regulators and nano fertilizer", global scientific journals , vol. 8, issue 11, pp. 1896-1907, 2020.
Quan, L., and L. Quan, "Facade modeling", Image-Based Modeling: Springer US, pp. 177–198, 2010. Abstract
Quartuccio, L., M. Isola, L. Corazza, M. Ramos-Casals, S. Retamozo, G. M. Ragab, M. N. Zoheir, M. A. - M. El-Menyawi, M. N. Salem, D. Sansonno, et al., "Validation of the classification criteria for cryoglobulinaemic vasculitis.", Rheumatology (Oxford, England), vol. 53, issue 12, pp. 2209-13, 2014 Dec. Abstract

OBJECTIVE: The aim of this study was to validate the classification criteria for cryoglobulinaemic vasculitis (CV).

METHODS: Twenty-three centres were involved. New patients with CV (group A) and controls, i.e. subjects with serum cryoglobulins but lacking CV based on the gold standard of clinical judgment (group B) and subjects without cryoglobulins but with clinical features that can be observed in the course of CV (group C), were studied. Positivity of serum cryoglobulins was necessary for CV classification. Sensitivity and specificity of the criteria were calculated by comparing group A vs group B. The group A vs group C comparison was done to demonstrate the possible diagnostic utility of the criteria.

RESULTS: The study included 268 patients in group A, 182 controls in group B and 193 controls in group C (small vessel vasculitis, 51.8%). The questionnaire (at least 2/3 positive answers) showed 89.0% sensitivity and 93.4% specificity; the clinical item (at least 3/4 clinical involvement) showed 75.7% sensitivity and 89.0% specificity and the laboratory item (at least 2/3 laboratory data) showed 80.2% sensitivity and 62.4% specificity. The sensitivity and specificity of the classification criteria (at least 2/3 positive items) were 89.9% and 93.5%, respectively. The comparison of group A with group C demonstrated the clinical utility of the criteria in differentiating CV from CV mimickers.

CONCLUSION: Classification criteria for CV were validated in a second, large, international study confirming good sensitivity and specificity in a complex systemic disease.