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"المستخلصات"
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التكشيف والمكانز والمستخلصات بين الأعمال الفنية والأوعية المرجعية والخدمات المعلوماتية المعاصرة
يتحدث الكتاب عن \"التكشيف والمكانز والمستخلصات\" حيث أنها من الموضوعات الحديثة في مجال المكتبات والمعلمات كما أن عدد الكتب التي تناولتها قليلة جدا بالمقارنة للموضوعات المكتبية الأخرى لهذا فقد تم تناول تلك الموضوعات بأسلوب مبسط وسهل وبطريقة جديدة تتناول التكشيف والاستخلاص ليس فقط كعمل فني يخضع لقواعد مقننة كالفهرسة والتصنيف ورؤوس الموضوعات ولكن أيضا كأحد الأوعية المرجعية وأيضا ضمن خدمات المعلومات ليظهر الكتاب في ثوب جديد يتناول التكشيف والمكانز والمستخلصات بين العمليات الفنية والأوعية المكتبية والخدمات المعلوماتية.
Book
Effects of Bidens Pilosa L Extract on Complete Blood Count and Serum Antioxidant Enzymes Levels in Rats
The aim of this study is to investigate the effects of Bidens Pilosa L extract (BPE) on complete blood picture and serum antioxidant enzymes level in rats by the dose of (3, 6 and 9ml orally/day). Thirty tow male albino rats about (170±10g) were used in this study, and then divided into four equal groups each (8rats). The first one considers a control negative group that fed on a basal diet all the time during the experiment, the other groups (24 rats) was fed on a basal diet + the Oral doses of B. Pilosa for (4 weeks). Complete blood cells count levels (HB, HCT, RBCs and PLT) showed significant increases compared with the control group. WBCs showed a decrease. For antioxidant enzymes (SOD, CAT, GSH and GPx) were significantly increase comparing with control.
Journal Article
Antimicrobial Activity of some Plant Extracts Using Food Model Media
This study aimed to optimize the antimicrobial efficacy of plant extracts for control of foodborne pathogenic and spoilage microorganisms using food model media based on meat and milk. The extracts of 7 medicinal plants (Gambooge, Clove, Marjoram, Galangal, Thyme, Cinnamon and Marigold) were screened for their antimicrobial activities against nine standard microbial strains (S. aureus, B. cereus, L. monocytogenes, E. coli, P. aeruginosae, S. enterica, C. albicans, Rhizopus sp and A. flavus). All alcoholic extracts (except that of Marigold) inhibited all tested microorganisms. Gambooge extracts showed the best activity against all tested microorganisms producing the widest inhibition zones ranged from 13 to 40 and 8 to 25 mm against bacteria and fungi respectively, followed by Clove extracts with inhibition zones ranged from 11 to 33 and 8 to 22 mm respectively. The most susceptible bacteria among Gram-positives to the tested plant extracts were Bacillus cereus, while the least susceptible were L. monocytogenes. The most susceptible bacteria among Gram-negative bacteria were Salmonella enterica while the least susceptible were P. aeruginosa. on the other hand fungal strains showed the highest resistance more than all tested bacteria and yeast. aqueous extracts showed less activity than alcoholic extracts. When the methanolic extracts were mixed into food models the antimicrobial activity were reduced and the required minimum inhibitory concentrations (MICs) were duplicated. MICs of Gambooge extract ranged from 0.234 to 3.750, 0.468 to 6.666 and 0.877 to 7.5 mg/ml when tested on microbiological (control) media, meat model and milk model respectively. The antimicrobial activity was reduced on semi-skimmed milk model more than that on meat model and control media respectively. The results indicated that plant extracts possessing antimicrobial activity can be exploited as ideal food preservatives after taken into account the reaction and interaction between food components and extract.
Journal Article
A Contrastive Study of Theme Types and Patterns in Medical Research Article Abstracts Written in English by Native and Saudi Scholars
Abstracts of research articles are dense in nature and require authors to pack information in a concise cohesive paragraph. One principle of cohesion is employing various theme types and thematic progression patterns. The study conducted qualitative contrastive analyses of these aspects in medical research article (RA) abstracts written in English by native and Saudi scholars. The findings revealed the predominance of constant and linear thematic progression patterns. Whereas the two patterns are almost equally used in the native scholars' data, the constant pattern prevailed in the non-native scholars' data. Non-native authors tended to simplify complex subject matter by using shorter clauses to exert less effort in processing them. They also relied on cohesive ties to achieve cohesion rather than using various thematic progression patterns. Due to the factual nature of the medical abstracts, unmarked topical and textual themes were the most used instead of interpersonal themes. Multiple themes were minimally employed due to the generic features of abstracts. The study findings may have implications for novice RA scholars of medicine, English for specific purpose instructors, and researchers interested in both second language acquisition and cross-cultural variations. Future studies could investigate themes in medical RA abstracts written in other languages.
Journal Article
Effect of Golden Germander \Teucrium polium L.\ on Male Albino Rats Induced Diabeto Renal Disease
This study aims to evaluate the nutra-therapeutic effects of dried Germander (0.5% and 1%), as well as aqueous and ethanolic extracts (100 and 200 ppm, for each type of extract) in infected albino rats induced diabeto-renal during 6 weeks. Results showed a significant decrease in glucose levels and serum kidney function parameters (urea, uric acid, and creatinine). These results may be due to bioactive components such as essential oil, polyphenols, flavonoids, carotenoids, vitamin C and vitamin E contents in Germander leaves. In conclusion, the use of Germander may lead to a decrease in glucose levels and potential nephrotoxicity after prolonged administration.
Journal Article