الأوراق العلمية


عرضالصفحاتعنوان الورقة +الملخصر.م
من 1 ـــ الي 3
الملخص

not found

1
من 4 ـــ الي 10
الملخص

The present work was planned to estimate the prevalence of Blastocystis hominis among random population of Wadi Al-Shati province. Stool specimens from 1000 randomized individuals were collected (during the period from the first of August 2007 to end of March 2008) from seventeen rural localities of Wadi Al-Shati province, presenting different sexes and ages (427 males and 573 females and aged from 1 to 90 years). Stool samples were examined using direct wet mounts and concentration method. The overall prevalence of B. hominis was 21.20% (212/1000), the prevalence rates varied from 12.50 to 38.23% among random population of different localities of Wadi Al-Shati province. The highest positivity was found in Mansurah locality (38.23%) followed by Quttah locality (31.25%. Out of 15 samples examined in Ashkeda, none was found positive for B. hominis. Prevalence rates between males and females were 22.24% (95/427) and 20.41% (117/573) respectively. The difference was not statistically significant (P>0.05). The age group 11 to 20 years showed the highest rate of infection (24.00 %), and the lowest (13.77 %) was in 1 to 10 years. Fecal specimens were examined by three direct wet mounts samples (normal saline, iodine and eosin stains) and formalin-ether concentration sedimentation smears in iodine stains. 183 samples (18.30%) were found to be positive for B. hominis in direct smears in normal saline, 197 samples (19.70%) were found to be positive in direct smears in iodine and 196 samples (19.60%) were found to be positive in direct smears in eosin stain for B. hominis. Concentration sedimentation detected B. hominis in 212 samples (21.20%). Comparative analysis of the results, showed no significant difference of sensitivity (P? 0.05) between direct smears and formalin-ether sedimentation for the diagnosis of B. hominis in fresh fecal material. Introduction

2
من 11 ـــ الي 12
3
من 13 ـــ الي 20
الملخص

Objectives: This Study evaluated the marginal gap of Ni-Cr based base metal alloys (RemaniumCse &Wiron 99) and the clinical acceptability of single castings invested in phosphate bonded investment with the use of conventional and accelerated casting techniques. Materials and methods : Forty individual stone casts were poured from impression made from master die .Conventional and accelerated method of investing and casting were followed .twenty casts were used in each of the groups .Each casting and its respective stone dies were measured with a stereomicroscope equipped with reticule scale at 4X magnification. Results: Measurements revealed that, mean values for the marginal gap of cast metal crowns casted with accelerated casting technique were 34.5 microns for Remanium CSe and 43.5 microns for wiron 99 and marginal gap of cast metal crowns casted with conventional casting technique mean values were 34 microns for Remanium CSe and 39 microns for wiron 99 base metal alloys. All marginal gap measurements were within the range of clinical acceptability. For the marginal gap, cast metal crowns fabricated with the accelerated casting technique were not significantly (p> 0.05) different from those fabricated with the conventional technique. Conclusion: the accelerated casting technique described in this study could be a vital alternative to conventional casting technique.

4
من 21 ـــ الي 33
الملخص

Antibiotics and dye susceptibility tests have been used by several investigators as selective agents or as presumptive procedures for the identification of anaerobes. In this study a total of 76 strains of Gram-positive anaerobic cocci (GPAC) were tested against five antibiotics (Oleandomycin, Vancomycin, Gentamycin, Tobramycin and Cephradine, and three dyes (Brilliant green, Crystal violet and Gentian violet), using agar plate dilution methods. Although the data of the susceptibility of GPAC to the tested antibiotics and dyes were of no use for the classification of these cocci, it could be concluded that Cephradine and Vancomycin are efficacious antibiotics against GPAC. However, Gentamycin and Tobramycin displayed an activity against Megosphaera (M.) elsdenii and Streptococcus (Str.) intermedius. In addition, Tobramycin was active against Gaffkya (G.) anaerobia, Peptococcus (Pc.) asaccharolyticus, Pc. prevotii and Pc. saccharolyticus, whilst all GPAC were resistant to Oleandomycin.

5
من 34 ـــ الي 35
الملخص

A total of 489 pregnant women attended gynecology and obstetric Department, Obari Hospital (during the period of middle of November 2007 to end of January 2008) for routine clinical examination. Among 489, 51 (10.42 %) were clinically diagnosed as having vaginitis with vaginal discharge and their vaginal swabs were screened for Trichomonas vaginalis using direct wet-mount microscopy. Only nine samples (1.84 %) were found positive for T. vaginalis. All these patients complained vaginal discharge, burning, vulvar pruritis and showed a heavy infection of T. vaginalis (3 to 4 parasites per 40 X field).

6
من 36 ـــ الي 43
الملخص

In the article a number of issues have been presented and discussed. It appears that there are weak links between the nomadic population and the government of Libya. People such as lorry drivers and female workers from neighbouring countries who enter Libya are spreading HIV/AIDS in Libya, particularly among the nomadic women. These issues must now be verified through scientific means.

7
من 44 ـــ الي 53
الملخص

The classification of Gram-positive anaerobic cocci (GPAC) has always been very unsatisfactory. Attempts to clarify the taxonomy of GPAC have involved several methods including the analysis of the composition of bacterial cell wall. In an attempt to obtain information on the cell walls of 24 strains of GPAC isolated from clinical materials at St. Lukes, Guilford, and St. Thomas Hospital, London, the amino acid and amino sugar composition was quantitatively determined by an amino acid analyzer, using the method of Park and Hancock. The present study has revealed that the evaluation of the cell wall components is an accurate and reproducible method for classification of GPAC. The investigation showed that there are major differences in the amino acid composition of the cell walls of the members of GPAC. On balance, the separation of most GPAC using this system in general is consistent with the principles of Holdman et al (1977) and added valid characteristics for certain organisms such as differentiation of the species of Pst. micros from Pc. magnus, and recognition of the species of Pc. variablis and Pc. anaerobius as a variant species of Pc. magnus. The most unexpected finding was the designated reference strains of Pc. asaccharolytius varied significantly in their cell wall components. Therefore, additional strains must be studied in order to clarify the characterization and hence the nomenclature of such organisms

8
من 54 ـــ الي 66
الملخص

Malignant chest wall tumors typically manifest as large, poorly marginated infiltrative masses and are more likely than benign tumors to be symptomatic. Although most malignant tumors have a nonspecific imaging appearance, findings such as chondroid or osteoid matrix, combined fat and soft tissue components or diffuse osteolytic change in association with a soft-tissue rib mass can be helpful in suggesting diagnosis of chondrosarcoma or osteosarcoma, liposarcoma, or multiple myeloma respectively. Changes in benign lesions such as the development of a soft tissue mass in association with pre-existing osteochondroma or the loss of a target like appearance in neurofibroma may be early indications of malignant transformation. In some patients, the combined clinical and imaging findings may suggest the diagnosis. For example, findings of chronic lymphedoema may lead to a diagnosis of angiosarcoma, or findings of a large mass with relatively minor rib involvement in a child may indicate a diagnosis of Ewing sarcoma. Even when the findings are nonspecific, imaging is important for tumor staging, therapeutic planning, and follow up of patients with malignant chest wall tumors. However, many chest wall tumors have nonspecific imaging features, and histologic analysis of tissue specimens is frequently required for diagnosis. Even after the decision has been made to perform a biopsy, imaging continues to play an important role in tumor management and is frequently used to facilitate biopsy, assess post procedural complications, and perform follow-up evaluation of tumors that are not excised.

9
من 67 ـــ الي 72
10
من 73 ـــ الي 80
الملخص

From the above it can be concluded that HIV/AIDS is a serious threat faced by the whole world. It has been discussed that there are various reasons for the spread of HIV, and some of the most common ways to control HIV are highlighted. The challenges to dealing with HIV have also been mentioned. Educational, programmes are seen as the best way to control the problem, but the threat cannot be eradicated altogether. However, it can be handled if implementers are determined to act. In terms of the impact of the disease, common people do not mix and the children of infected families are kept away from others due to sociological factors. Rich people do not give jobs to those who are infected, and in some cases people are removed from their job. However, government policy can be put in place to deal with this and governments around the globe should work together to beat HIV and AIDS.

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من 81 ـــ الي 84
12