Stephanie Gavotte : De La Princesse

https://digitalcommons.library.umaine.edu/mmb-ps/3273/thumbnail.jp

Angelo Waltz : Pfingsten In Florenz

https://digitalcommons.library.umaine.edu/mmb-ps/3583/thumbnail.jp

Variation of thickness of hard anodic films

An investigation was made of the effects of varying processing conditions on the thickness of anodic films produced by the Martin Hard Coat (4) process on commercially pure aluminum and nine aluminum alloys. This study was conducted to provide sufficient data for designing coating thicknesses on aircraft accessory parts that would conform to the close tolerances maintained in the course of manufacture of precision components. Coating thicknesses up to 0.0051 in. were obtained. Changes in electrolyte strength, temperature of the bath, alloy composition, and current density were made to see their effect on the thickness of the film and growth of the part. The first three aforementioned variables caused slight variations in the film thickness. Current density was the chief determinant of the thickness of the hard coat film. Growth of the part was only affected slightly by changes in processing conditions. The growth of the part averaged 0.41 of the over-all film thickness. Coating ratios increased with time of film formation; higher coating ratios were obtained with low strength electrolytes, low bath temperatures, and high current densities

Dancing Doll

https://digitalcommons.library.umaine.edu/mmb-ps/3351/thumbnail.jp

The Explanatory Power Of The Yield Curve In Predicting Recessions In South Africa

The term structure of interest rates, particularly the term spreaddetermined from the difference between ten-year government bond yields andthree-month Treasury bill yields, has received increased attention as avaluable forecasting tool for the purposes of monetary policy and recessionforecasting. This is on the back of the observed positive relationship betweenterm spread and economic activity. Moreover, the term spread has been observedto invert prior to the occurrence of economic recessions both in developed anddeveloping countries.This study investigated the forecasting ability of the South African(S.A.) term spread in predicting S.A. recessions, taking into account therecent global economic recession. The motivation is due to the forecastingconsistencies illustrated by the term spread in providing statisticallyincorrect signals of recession in 2003, which did not transit into reality. Itimplied a weak relationship between the S.A. term spread and economic activity.Moreover, based on observations from the literature that term spreads andeconomic activities across countries are correlated, the term spreads of China,United States (U.S.) and Germany were investigated and compared to the S.A.term spread to determine which better forecasts S.A. recessions. The studyemployed the Dynamic Probit Model since it is considered to provide a betterpredictive edge over the Traditional Static Probit model.The findings revealed that the S.A. term spread accurately predicted allthe S.A recessions since 1980; Chinese term spread accurately predicted the1996 and 2008 S.A recessions; U.S. term spread predicted some recessions; whileGerman term spread predictions were counter-cyclical

BIOACTIVITY SCREENING OF SELECTED TRADITIONAL MEDICINAL PLANTS OF KERALA

Objectives: Traditional medicines all over the world is revaluing nowadays by extensive research programs. To validate the traditional use, the active components in them need to be identified, characterized, and biologically evaluated. Stereospermum suaveolens, Hygrophila spinosa, and Naravelia zeylanica are important medicinal plants used by the ethnic people of Kerala against various ailments. The present study validates the ethnomedical uses of S. suaveolens, H. spinosa, and N. zeylanica by screening their antimicrobial, anthelmintic, and antioxidant properties.Method: All the analyses were done according to standard protocols.Results: The ethanolic extracts of their useful parts were investigated for antimicrobial activity against 10 human pathogenic microorganisms. All the three plants had shown prominent antimicrobial activities, and S. suaveolens exhibits comparatively more antifungal activity in their higher concentration (500 μg/mL). Anthelmintic efficiency of the plants was screened using Indian adult earthworm Pheretima posthuma. All of them had shown significant activity, and the highest was observed in S. suaveolens leaves. Antioxidant potential of the plants was screened using 2,2 diphenyl 1-picrylhydrazyl (DPPH) free radical scavenging assay and superoxide anion scavenging assay. In DPPH free radical scavenging assay, maximum radical scavenging was shown by S. suaveolens with IC50 value 61.6±2.3 μg/mL, and in superoxide anion scavenging assay, maximum activity was in N. zeylanica with IC50 value of 74.66±8.5 μg/mL.Conclusion: This study provides scientific evidence on the traditional use of S. suaveolens (leaves), H. spinosa (leaves), and N. zeylanica (aerial part) in treating microbial diseases, worm disturbances, and their potential as an antioxidant agent

FIRST STEP TOWARDS UNRAVELING THE MEDICINAL PROPERTIES OF AN ENDEMIC TRADITIONAL MEDICINE, BAUHINIA PHOENICEA WIGHT AND ARN BARK

Objective: Bauhinia phoenicea Wight & Arn is a medicinal plant endemic to Western Ghats. In traditional medicine, it used against diabetes, skin allergies, fungal infections and worm disturbances. To the best of our knowledge, any scientific studies on the medicinal properties of this are not yet reported. Therefore, as a first step towards unraveling its medicinal property, bioactivity profiling was performed.Methods: Pharmacological activity profiling includes antibacterial, antifungal, anthelmintic and antioxidant property screening using crude ethanolic extract, which preliminary analyses its folk claim. Qualitative Phytochemical analysis performed to identify various valuable secondary metabolites. All the analysis were done according to standard protocolsResults: The present work focused on the evaluation of its folk claim. Ethanolic extract of bark of B. phoenicia assayed for antimicrobial activity against 10 human pathogenic strains. The extract showed significant activity against all pathogens. Maximum zone of inhibition observed in Candida albicans and Aspergillus niger in their higher concentration (500µg/ml). The anthelmintic activity of crude drug evaluated on Indian adult earthworms Pheretima posthuma, exhibited dose dependent spontaneous mortality, and evoked responses to pin prick and effects compared with that of Albendazole. The ethanolic extract showed potent DPPH (1, 1-diphenyl-2-picrylhydrazyl) free radical scavenging and super oxide anion scavenging properties with IC 50 values 90±0.92 and 64±0.5 respectively. The preliminary qualitative analysis of B. phoenicea bark indicated the presence of alkaloids, saponins, phenols, steroids and flavonoids.Conclusion: According to our results, it is concluded that bark of B. phoenicea has significant antimicrobial, anthelmintic and antioxidant properties supporting the folk medicinal use of this species. The further procedures of identification and isolation of the pharamacologically active principles are in progress.Â

EVALUATION OF THE FOLK CLAIM AND IDENTIFICATION OF THE PHARMACOLOGICAL ACTIVE PRINCIPLES IN BAUHINIA PHOENICEA LEAVES

ABSTRACTObjective: Bauhinia phoenicea, an endemic plant of western Ghats, using in traditional medicine against diabetes, skin allergies, fungal infections, andworm disturbances. To the best of our knowledge, any scientific studies on the medicinal properties of the leaves of this plant are not yet reported.Therefore, as the first step toward unraveling its medicinal property, bioactivity profiling, and gas chromatography-mass spectrometry (GC-MS)analysis were performed.Methods: The pharmacological activity profiling includes antibacterial, antifungal, anthelmintic, and antioxidant property screening using crudeethanolic extract, which preliminary analyses its folk claim. GC-MS analysis performed to identify the pharmacologically active principles. All analyseswere performed according to standard protocols.Results: Ethanol extract of the leaves of B. phoenicea was assayed for the antimicrobial activity against 10 human pathogenic strains using welldiffusion assay. The extract showed a significant activity against all pathogens. A maximum zone of inhibition observed in Salmonella typhi in theirhigher concentration (500 µg/ml). The anthelmintic activity of crude drug evaluated on Indian adult earthworms Pheretima posthuma, exhibited dosedependentspontaneous mortality,and evokedresponsestopin prickand effectscomparedwith that of albendazole. The drug showedpotentantioxidantpropertyin 2,2-diphenyl-1-picrylhydrazylfreeradicalscavengingand superoxideanion scavengingassayswith half maximal inhibitoryconcentrationvalues92±0.92 and 62±1.34, respectively.The GC-MSanalysiswhichshowedthe presenceof 19 compounds including hexadecanoicacid and oleic acid.Conclusion: According to our results, it is concluded that leaf of B. phoenicea has significant antimicrobial, anthelmintic, and antioxidant propertiessupporting the folk medicinal use of this species. The further procedures of isolation and characterization of active principles are in progress.Keywords: Bauhinia phoenicea, Antimicrobial, Anthelmintic, Antioxidant property and gas chromatography-mass spectrometry