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259 results for “activity concentration”

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Research ArticleOpen accessIn the abstractASCORBIC ACID FOLIIAR SPRAY COUNTERACTING EFFECT OF SALINITY ON GROWTH, NUTRIENTS CONCENTRATIONS, PHOTOSYNTHESIS, ANTIOXIDANT ACTIVITIES AND LIPID PEROXIDATION OF BEAN (PHASEULUS VULGARIS L.) CULTIVARSZeinab A. Salama, El-Zanaty A.A. Abou El-Nour, Mohamed M. El Fouly, Alaa A. GaafarA water culture experiment was carried out in the Department of Fertilization Technology at National Research Centre, Cairo, Egypt, to investigate the effect of Ascorbic Acid (AsA) foliar application and salinity stress (100 ppm and 100 mmoL NaCl) on growth, nutrients concentration and some biochemical parameters of two kidney bean (Phaseulus Vulgaris L.) cultivars. Salinity caused significant reduction in growth … …American Journal of Agricultural and Biological Sciences, Vol. 9, Issue 3 · 16 May 2014 · 7,906 accessesView PDFCite
Research ArticleOpen accessIn the abstractEVALUATION OF THE ANTI-ARTHRITIC EFFECT OF STERCULIA TRAGACANTHA (LINDL.) LEAF EXTRACT IN RATSUdegbunam Rita Ijeoma, Nwaehujor Chinaka Onyebuchi, Udegbunam Sunday OsitadimmaSterculia tragacantha leaves for years have been used by traditional healers in eastern Nigeria in the treatment of arthritis, edema, gout, whitlow and cold. The aim of this study was to evaluate the folkloric claims of Sterculia tragacantha leaf extract in relieving arthritic conditions. The effects of Sterculia Tragacantha methanol leaf Extract (STEX) on formaldehyde and adjuvant-induced arthritis were studied … …American Journal of Pharmacology and Toxicology, Vol. 9, Issue 2 · 11 Mar 2014 · 7,592 accessesView PDFCite
Research ArticleOpen accessIn the abstractINHIBITORY ACTIVITY OF POTENTOX AGAINST DNA GYRASE OF ENTEROBACTERIACEAEManu Chaudhary, Anurag PayasiDNA gyrase, a type II topoisomerase catalyzes the supercoiling of relaxed closed circular DNA. In this report we evaluated the in vitro inhibitory effect of non antibiotic adjuvant compounds disodium edetate and sodium citrate against supercoiling activity of bacterial DNA gyrase. Further, we assessed the effect of different drugs alone and in combination with one or more adjuvants in overcoming … …American Journal of Infectious Diseases, Vol. 10, Issue 1 · 8 Feb 2014 · 7,291 accessesView PDFCite
Research ArticleOpen accessIn the abstractMEASUREMENT OF RADON EXHALATION RATE, RADIUM ACTIVITY AND ANNUAL EFFECTIVE DOSE FROM BRICKS AND CEMENT SAMPLES COLLECTED FROM DERA ISMAIL KHANNisar Ahmad, Mohamad Suhaimi Jaafar, Sohail Aziz Khan et al.Radon concentration, exhalation rate, radium activity and annual effective dose have been measured from baked and unbaked bricks and cement samples commonly used as construction material in the dwellings of Dera Ismail Khan City, Pakistan. CR-39 based NRPB radon dosimeters and RAD7 have been used as passive and active devises. The values of radon concentration for baked, unbaked bricks and … …American Journal of Applied Sciences, Vol. 11, Issue 2 · 21 Dec 2013 · 8,285 accessesView PDFCite
Research ArticleOpen accessIn the abstractCHEMICAL ANALYSIS AND ANTIOXIDANT ACTIVITY OF "NERIUM OLEANDER" LEAVESLakhmili Siham, Obraim Saida, Taourirte Moha et al.The phenolic products of medicinal plants have a great pharmacological interest. This product gives the powers of medicinal plants. They are the source of several active principles widely used in modern medicine. The use of Nerium oleander in Moroccan traditional medicine is very common. Few studies have focused on the chemical analysis and phenolic compounds of this plant. For this, … …OnLine Journal of Biological Sciences, Vol. 14, Issue 1 · 13 Dec 2013 · 8,292 accessesView PDFCite
Research ArticleOpen accessIn the abstractNitrification of Urea and Assimilation of Nitrate in Saturated Soils Under Aerobic ConditionsV. V. Ramakrishnan, A. E. GhalyThe aim of this study was to investigate nitrification activity of urea and the assimilation of nitrate in a well aerated soil using perfusion technique with addition of glucose as an energy and carbon source. In this study, urea was rapidly nitrified by the bacteria in the saturated soil but its course of transformation to NO3 was not linear. There … …American Journal of Agricultural and Biological Sciences, Vol. 8, Issue 4 · 6 Nov 2013 · 8,417 accessesView PDFCite
Research ArticleOpen accessIn the abstractCOMPARATIVE STUDY OF IN VITRO ANTIMICROBIAL ACTIVITIES OF FOENICULUM VULGARE MILL. (UMBELLIFERAE) EXTRACTKhadija Dahak, Moha TaourirteThe importance to push scientifically the investigations on the organic extracts of the plants aromatic as potential source of new antimicrobial compounds comes from the traditional use of the plants. However, the consumption of these natural products requires à thorough research in this field. The antimicrobial effect of organic and aqueous leaves extracts of Foeniculum vulgare Mill., However, which makes … …OnLine Journal of Biological Sciences, Vol. 13, Issue 4 · 12 Oct 2013 · 8,676 accessesView PDFCite
Research ArticleOpen accessIn the abstractBio-Guided Study on Melastoma malabathricum Linn Leaves and Elucidation of its Biological ActivitiesMourouge Saadi Alwash, Nazlina Ibrahim, Wan Yaacob AhmadThe present study aimed to isolate and identify constituents with antibacterial activity from the Methanol extract of Melastoma malabathricum leaves (MMML) through bioassay guided fractionation. Furthermore, the study scoped to evaluate the cytotoxic effects of M. malabathricum leaves fractions for possible protective effect of antoxidative constituents present in the fractions. The MMML extract was fractionated by Vacuum Liquid Chromatography (VLC) … …American Journal of Applied Sciences, Vol. 10, Issue 8 · 24 Jul 2013 · 9,519 accessesView PDFCite
Research ArticleOpen accessIn the abstractPolygalacturonase and Pectin Methylesterase Activities of CaCl2 Treated Red-Fleshed Dragon Fruit (Hylocereus polyrhizus) Harvested at Different MaturityY. B. Awang, S. H. Chuni, M. T.M. Mohamed et al.Fruits harvested at different maturity possess different biochemical constituents and physiological properties that make the fruits may react somewhat differently to the postharvest treatment. A study to examine the activity of Polygalacturonase (PG) and Pectin Methylesterase (PME) enzymes during storage in dragon fruit (Hylocereus polyrhizus) harvested at 28 days (Index 3) and 34 days (Index 5) after anthesis and postharvest … …American Journal of Agricultural and Biological Sciences, Vol. 8, Issue 2 · 23 Jul 2013 · 8,436 accessesView PDFCite
Research ArticleOpen accessIn the abstractIdentification and Mode of Action of Antibacterial Components from Melastoma malabathricum Linn LeavesMourouge Saadi Alwash, Nazlina Ibrahim, Wan Yaacob AhmadThe present study aimed to assess the antibacterial activity of the methanol extract of Melastoma Malabathricum Leaves (MMML), active fraction of M. Malabathricum Leaves (ML5) and isolated kaempferol-3-O-(2",6"-di-O-p-trans-coumaroyl)-β-glucopyranoside (Kf) and to describe the preliminary mode of action against Gram-positive and Gram-negative bacteria. The MMML extract was fractionated by Vacuum Liquid Chromatography (VLC) to afford M. malabathricum Leaves fractions (ML1-ML6) of … …American Journal of Infectious Diseases, Vol. 9, Issue 2 · 18 Jun 2013 · 12,627 accessesView PDFCite