Tentative load and resistance factor design criteria for steel beam-columns

Nominal design equations and reai•tance factors are developed for steel beam-columns as part of Load and Resistance Factor Design criteria for steel buildings. The resistance factors are derived from principles of first-order probability theory using calibration to present designs

Load factors for wind and snow loads for use in load resistance factor design criteria

This report presents the background and the derivations for the determination of the mean maximum loads and the corresponding load factors for wind and snow loading for use in Load and Resistance Factor Design Criteria for steel building structures

EVALUATION OF ANTIOXIDANT ACTIVITY OF LEAF EXTRACTS OF HOLOPTELEA INTEGRIFOLIA (ROXB) PLANCH

Holoptelea integrifolia (Roxb.) Planch has been used from long time in traditional medicine. The main objective of the work was to evaluate the antioxidant activity of leaves of Holoptelea integrifolia (Roxb.) Planch. The antioxidant activity of petroleum ether and methanolic extract of Holoptelea integrifolia (HI) leaves was evaluated using Hydroxyl Radical Scavenging Activity and Total Reduction Capability models. Preliminary Phytochemical investigation of the petroleum ether extract (PEHI) of Holoptelea integrifolia leaves reveals the presence of steroids, terpenoids, alkaloids, glycosides, flavonoids, proteins, tannins, and carbohydrate while methanolic extract (MHI) of Holoptelea integrifolia showed the presence of steroids, alkaloids, flavonoids, proteins and carbohydrates. In case of Hydroxyl Radical Scavenging Activity both the HI extracts showed dose dependant increase in percent inhibition i. e. hydroxyl radical scavenging activity and thereby showed antioxidant activity however PEHI is more potent than MHI in this regard, while in case of Total Reduction Capability both the HI extracts have shown dose dependent increase in absorbance thereby dose dependant total reduction capacity indicating antioxidant activity. Further trend suggest that PEHI has more potent antioxidant potential than that of MHI. The results indicate that petroleum ether and methanol extracts contained such phytochemial compounds which are active in case of antioxidant activity using Hydroxyl Radical Scavenging Activity and Total Reduction Capability. Which support the ethnomedicinal application of the plant as an antioxidant agent. Keywords: Holoptelea integrifoila leaves, Antioxidant, Hydroxyl Radical Scavenging Activity, Total Reduction Capability.Â&nbsp

Effect of Spacing and Pruning on Growth, Yield and Quality of Cv. Deanna Fig (Ficus carica L.)

The effects of tree spacing (5x2m, 5x2.5m, 5x3m, 5x3.5m and 5x4m) and pruning (8 buds/cane, 6 buds/cane and 4 buds/cane) on vegetative growth, physiological parameters, fruit yield and quality were studied in fig (Ficus carica L.) cv. Deanna in the 3rd and 4th year of its growth during the period 2010-12. It was observed that with increase in tree spacing, growth parameters like leaf number, shoot length, internode length, tree-spread, tree height and tree circumference, along with fruit yield both in terms of fruit number and fruit weight per tree, declined gradually under different pruning levels. Increase in pruning level from 8 buds/cane to 4 buds/cane resulted in increased leaf number, shoot length and internode length. Yield characters, viz., fruit number/tree, fruit weight/tree, fruit number/hectare and fruit weight/hectare were marginally influenced by pruning. However, interaction effects of pruning and spacing were found to be non-significant. Consistently declining trends in photosynthesis rate and stomatal conductance, along with increase in leaf water potential value were observed with increase in spacing. Effects of spacing were more conspicuous than those of pruning. Best results for maintenance of vigour and fruit yield were observed under a spacing of 5x2m or 5x2.5m, and 4 buds/cane pruning. Although there was reduction in average fruit size under closer spacing when compared to wide spacing, fruit quality attributes like TSS and acidity were not affected by various treatments. Effects of closer spacing on growth and yield parameters were more pronounced in the 3rd year as compared to the 4th year, showing better response to treatments in young trees. Fruit yield calculated on per hectare basis showed highest fruit number of 116500-133750 and 274500-299500, and fruit weight of 54.5-62.0 and 158.77- 173.30 quintals/ha, respectively, during the 3rdand 4th year of planting under closer spacing of 5x2m and 4 buds/cane pruning

Creep Response of Rotating Composite Discs having Exponential Hyperbolic Linear and Constant Thickness Profiles

The study compares the steady state creep response of rotating Al-SiC discs having constant, linear, hyperbolic and exponential thickness with different thickness profiles. All the discs are assumed to have equal volume with the same average thickness. The creep behaviour of the disc material is described by threshold stress based law while the yielding is assumed to follow Tresca criterion. The variable thickness disc is observed to have superior creep response, expressed in terms of stresses and strain rates, to a constant thickness disc. Amongst variable thickness discs, the creep response is observed to be superior for linear thickness disc, when the inner thickness of all the discs is kept the same. However, for the same outer thickness, the disc having hyperbolic thickness profile exhibits the best creep response

Hot QCD equations of state and RHIC

We show how hot QCD equations of states can be adapted to make definite predictions for quark-gluon plasma at RHIC. We consider equations of state up to $O(g^5)$ and $O[g^6(ln(1/g)+\delta)]$. Our method involves the extraction of equilibrium distribution functions for gluons and quarks from these equations of state by capturing the the interaction effects entirely in the effective chemical potentials. We further utilize these distribution functions to study the screening length in hot QCD and dissociation phenomenon of heavy quarkonia states by combining this understanding with the semi-classical transport theory.Comment: Based on poster presented during quark matter-2008(4-10 Feb 2008) Jaipur India; 4 Pages, 2 eps fig

A Study on “Security of Cyber-Physical Systems in the Cloud”

The existing security models are built with certain assumptions. The solutions like distributed accountability, provable data possession (PDP), Third Party Auditing (TPA) and so on are secure as long as the assumptions hold true. To ensure fool proof security for cloud storage security little research has been made on quantum key cryptography. Since the quantum key distribution is unconditionally secure, we propose a new scheme known as Cloud QKDP (Quantum Key Distribution Protocol for Cloud Computing) which exploits the benefits of quantum mechanisms to secure cloud storage and data dynamics. We consider a case study in which three parties such as cloud server, data owner and trusted client have provably secure communications with our proposed scheme which uses random oracle model. Our empirical study revealed mixture of success and failure rates with private and public clouds respectively

ISOLATION AND IDENTIFICATION OF A NEW PHYTOSTEROL FROM HOLOPTELEA INTEGRIFOLIA (ROXB) PLANCH LEAVES

Objective: The Plant Holoptelea Intergrifolia (Roxb.) Planch is being used for the treatment of various disorders since time immemorial in the indigenous system of medicine in India. The main objective of the work was to isolate a new phytosterol from petroleum ether extract of Holoptelea  Integrifolia leaves using Preparative Thin Layer Chromatography (TLC). Methods: As per ICH guidelines we have Prepared Thin Layer Chromatographic plates for separation of a new phytosterol from Petroleum  ether extract of leaves of Holoptelea  Intergrifolia (Roxb.) Planch. The mobile phase used for separation of phytosterol consisted ofChloroform: Ethyl acetate, in the volume ratio of 4:6 (v/v), UV, LC/MS, IR and NMR spectral analytical techniques were used for identification and confirmation of structure of a new Phytosterol by Preparative TLC. Results: Preliminary phytochemical analysis of petroleum ether extract of Holoptelea integrifolia leaves showed the presence of steroids, terpenoids, alkaloids, glycosides, flavonoids, proteins, tannins and carbohydrates. The isolated phytosterol designated as17-(6-(diethylamino) decan-3-yl)-10,13-dimethyl-12,13-dihydro-10H-cyclopenta[a] phenanthren-3-ol. It responded positively to Liebermann Burchard test indicating steroidal nature of the molecule. Conclusion: On the basis of spectral data analysis and chemical reactions, the structure of a new phytosterol isolated by preparative TLC from petroleum ether extract of leaves of Holoptelea Integrifolia (Roxb.) Planch has been formulated by UV, LC/MS, IR and NMR spectral analysis as 17-(6-(diethylamino) decan-3-yl)-10,13-dimethyl-12,13-dihydro-10H-cyclopenta[a] phenanthren-3-ol This is a new phytosterol isolated from plant source and being reported for the first time

A comparison of policies and guidelines related to multimorbidity in the UK, Australia and Sri Lanka

Background and objectives Increased rates of multimorbidity, evident in developed and developing countries, should be addressed by health policy. The aim of this study was to compare policies and guidelines related to multimorbidity in primary healthcare in countries with different health systems, to identify initiatives, gaps and opportunities for further improvement. Methods We conducted a content analysis of UK, Australian and Sri Lankan policy documents and guidelines published between 2006 and 2017, in electronic databases, references and government repositories, tabulating data extracted for content, implementation plans, gaps and opportunities for development. Results Overall, 38 of the 56 identified documents explicitly or implicitly addressed multimorbidity or its prevention. The UK had four policy documents and guidelines specifically on multimorbidity. Australia and Sri Lanka lacked specific policies on multimorbidity, but policies did address chronic conditions and noncommunicable diseases. Discussion Important differences exist in how national policies seek to address multimorbidity. Policy implementation, how this affects quality of care and outcomes, and the role of primary care should be examined