2,167 research outputs found
Influence of New Media on Travel Decision Making
Tourism, one of the largest industries in the world, has recorded consistent growth since the end of Second World War. Travel is a key factor in the process of tourism, where the tourist is the main player as well as the ultimate consumer of the products and services offered to him/her. A tourist‟s decision to travel is by itself a complex process because there are many factors that influence the decision. The New media, which has emerged in the wake of tremendous advancements in information and communication technologies is also influencing the decision making process in modern times. Here, an attempt has been done to examine the influence of new media in the various stages of decision making process and the role played by it. A questionnaire based survey was undertaken to conduct the study and the analysis reveals various kinds of influences of new media
Zeroing in on Supersymmetric Radiation Amplitude Zeros
Radiation amplitude zeros have long been used to test the Standard Model.
Here, we consider the supersymmetric radiation amplitude zero in
chargino-neutralino associated production, which can be observed at the
luminosity upgraded LHC. Such an amplitude zero only occurs if the neutralino
has a large wino fraction and hence this observable can be used to determine
the neutralino eigenstate content. We find that this observable can be measured
by comparing the p_T spectrum of the softest lepton in the trilepton
decay channel to that of a control process such as
or . We test this technique on a
previously generated model sample of the 19 dimensional parameter space of the
phenomenological MSSM, and find that it is effective in determining the wino
content of the neutralino.Comment: 19 pages, 7 figure
Isolation of catechins from Cycas armstrongii Miq. of an Egyptian origin
The phytochemical investigation of Cycas armstrongii Miq. leaves and twigs using different chromatographic techniques led to the isolation of three catechin monomers; catechin (1), epicatechin (2), and epigallocatechin-3-gallate (3), for the first time from this species. The chemotaxonomic significance of the isolated compounds is discussed in the rest of this article
CXCR 3 expression on CD4+T cells and in renal tissue of pediatric systemic lupus erythematosus patients
Background: Pediatric systemic lupus erythematosus (pSLE) accounts for about 20% of all cases of Systemic Lupus Erythematosus (SLE), with nephritis occurring in approximately 50% of the patients. Objective: to evaluate the expression of CXCR3 in the kidneys and on CD4+ T cells in pSLE. Methods: This study was conducted on 45 patients with pSLE following up at the Allergy and Immunology Clinic, Children’s Hospital, Ain Shams University and 45 age and sex matched healthy children as a control group. Medical history, clinical examination and routine laboratory investigations for assessment of disease activity were done for all patients, the frequency of CXCR3, CD4+ T cells was determined in all patients and controls. Twenty-five Paraffin blocks of patients with lupus nephritis (LN) (available at the time of the study) underwent immunohistochemistry staining for the frequencies of Chemokine C receptor (CXCR3). Results: The absolute level and percentage of serum CD4+CXCR3+ were significantly lower among our patients as compared to healthy controls. A significant direct correlation was found between serum CD4+CXCR3+ and both the lymphocytic count and quantitative Systemic Lupus erythematosus disease activity index (SLEDAI), as well as a significant inverse correlation between it and 24 hours urinary proteins. Variable degrees of CXCR3expression seemed to have no impact on laboratory tests, British Isles Lupus Assessment Group (BILAG) score and cumulative doses of Immunosuppressives. Conclusion: Serum CD4+CXCR3+ and not renal CXCR3 may be a potential marker of LN activity
Role Enhancement of ZnO nanoparticles and ZnO/Ag composite for Medical Applications
ZnO nanoparticles assisted with ethanol and 2propanol as capping agent investigated the medical activities of ZnO nanoparticles and ZnO/Ag composite. ZnO nanoparticles were prepared using zinc acetate and silver nitrate as a source of zinc and silver. ZnO/Ag composite also prepared and studied the medical activities. XRD pattern indicates that the structure of ZnO was hexagonal wurtzite with average size 5 nm according to Scherre's formula. The optical band gap of ZnO nanoparticle showed very sensitive for using different capping agent as shown in UV-VIS spectra and also showed blue shift in wavelength corresponding to capping agent. Finally, the antibacterial properties of ZnO and ZnO/Ag composite against Gram-negative and Gram-positive bacteria have been demonstrated using well diffusion method and indentify their antibacterial effects compared with organic antibacterial agents. Keywords: ZnO nanoparticles, ZnO/Ag composite, antibacterial
Membrane endothelial protein C receptor expression in renal tissue of pediatric lupus nephritis patients
Background: Lupus nephritis (LN) is more common and more severe is pediatric systemic lupus erythematosus (pSLE). Endothelial protein C receptor (EPCR) is an inducer of anti-apoptotic pathways in endothelial cells. Recent studies have taken elevated anti-injury biomarkers as EPCR into consideration regarding their roles to antagonize LN.Objectives: to evaluate the membrane expression of endothelial protein C receptor (mEPCR) in the renal microvasculature in pediatric patients with LN.Methods: This study was conducted on 25 patients with pSLE following up at the Allergy and Immunology Clinic, Children’s Hospital, Ain Shams University. The 25 patients have LN proved by a previous renal biopsy. Medical history, clinical examination and routine laboratory investigations for assessment of disease activity were done for all patients. Paraffin blocks of patients’ renal biopsies were subjected to immunohistochemistry staining for the frequency of mEPCR.Results: mEPCR was mainly expressed in the endothelium of the peritubular capillaries. Our results showed that an equal number of patients had nil and mild marker expression (8 patients each, 32%) while 9 patients (36%) showed moderate/strong marker expression. We found that 9 out of 10 (90%) of patients with class II had nil/mild marker expression, 5 patients out of 9 (55.5%) with class III had mild/moderate marker expression, while 5 patients 0ut of 6 (83.3%) with class IV and V had moderate/strong marker expression. We only found a significant statistical difference between the different degrees of mEPCR expression regarding 24 hours urinary proteins. No statistical significance was found between the different degrees of mEPCR expression and different immuno-suppressive therapy dose/kg or renal outcome using the renal British Isles Lupus Assessment Group (BILAG) score; in spite that most of the patients who got improved had nil/mild marker expression.Conclusion: mEPCR -bearing a statistically significant difference in relation to different LN classes- showed more expression in the more aggressive classes; a finding which might suggest a contribution of the endothelium of the renal parenchyma to the pathophysiology of more progressive LN. Hence the tissue marker might emerge as a potential new therapeutic target in the search for more selective treatment for SLE.Keywords: p SLE, mEPCR, renal biopsy, immunohistochemistry, BILAG, lupus nephriti
Mercuric Ions (II) Uptake From Aqueous Solutions by Chelating Resin Containing Pendant Multidentate Ligand
The toxic nature and other adverse of the heavy metals lead to pollution and make it one of the most serious problems that affect certain sides of the environment. There are many heavy metal ions like the mercuric ions detected in industrial wastewaters originating from several factors such as from metal plating, mining activities, paint manufacture, etc. The above-mentioned ions isn't biodegradable and tends to be accumulated in living organisms, causing various diseases and disorders. Therefore, it must be removed from aqueous solution before discharge. In this paper, an experimental work it has been done regarding the optimal conditions of removing Hg (II) ions from water using chelating ion exchange resin namely XAD- & Pendant Multidentate Ligand Resin. The adsorption behaviour of mercury ions on XAD-& Pendant Multidentate Ligand Resin was studied as a function of the following variables: contact time, pH solutions, initial concentration of metal ions and resin dosage the adsorbent's maximum total adsorption capacity of for mercuric ions was: 0.82 mmol/g dry resin. The resin low affinity towards alkali and alkaline earth metals shows its use for samples that related to environment. The concluded results state that, XAD- & Pendant Multidentate Ligand Resin holds great potential for the purpose of removing mercuric ions from polluted wastewater
Clinical audit of neonatal care in Assiut Women's Health Hospital, Egypt
Background: The current study aims to auditing the current care of healthy full term newborns in the delivery room and identify the gap between the current practice and ideal practice in Assiut Women's Health Hospital, Egypt.Methods: The current study was a clinical audit carried out in Assiut Woman Health Hospital, in the period from 1 September 2016 to 28 February 2017.The study included all newborns delivered in the delivery word of gestational age after 37 week. We excluded all Preterm babies, those with congenital anomalies, pregnant women with medical disorders and multiple pregnancies. In the present work all data was collected prospectively through direct personal patient contact, direct observation of care givers, patient interactions and attitudes, from the clinical records and then recording the data in special check sheet. All basic criteria of the study participants as age, parity, gestational age at delivery and type of delivery were obtained. The neonatal gender, weight, heart rate and respiratory rate were checked. Audit criteria were selected according to the WHO 2015 and AAP 2010-2015 guidelines.Results: The study included 800 women; the mean age of the women was 26.52±5.70 years. The mean parity was 1.78±1.85. The mean gestational age at delivery was 38.81±0.96 weeks. As regard the type of delivery, 54.1% of women were delivered by cesarean section. Calling neonatologists occurred in 67.9% of deliveries. The mean birth weight was 3.17±0.39 kilograms. Nearly half of them (52%) were males.Conclusions: Application of the guidelines of the neonatal handling is important for optimum care to the neonates. Re-audit the steps of the handling is important to discuss whether practice has improved or not in our tertiary hospital
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