Vibration analysis and control in linear switched reluctance motor

Vibration is one of the major drawbacks of Linear Switched Reluctance Motor (LSRM). Two design techniques to reduce vibration in the LSRM are proposed. A detailed mathematical approach for calculating natural frequency has been outlined. Different techniques to predict the vibration frequencies are analyzed using ANSYS software. The analyzed structures are compared by using experimental and simulation results

The Forcing Strong Metric Dimension of a Graph

For any two vertices u, v in a connected graph G, the interval I(u, v) consists of all vertices which are lying in some u − v shortest path in G. A vertex x in a graph G strongly resolves a pair of vertices u, v if either u ∈ I(x, v) or v ∈ I(x, u). A set of vertices W of V (G) is called a strong resolving set if every pair of vertices of G is strongly resolved by some vertex of W. The minimum cardinality of a strong resolving set in G is called the strong metric dimension number of G and it is denoted by sdim(G). For a strong resolving set W of G, a subset S ofW is called the forcing subset of W if W is the unique strong resolving set containing S. The forcing number f(W, sdim(G)) of W in G is the minimum cardinality of a forcing subset for W, while the forcing strong metric dimension, fsdim(G), of G is the smallest forcing number among all strong resolving sets of G. The forcing strong metric dimensions of some well-known graphs are determined. It is shown that for any positiveintegers a and b, with 0 ≤ a ≤ b, there is nontrivial connected graph G with sdim(G) = b and fsdim(G) = a if and only if {a, b} not equal to {0, 1}

CUTANEOUS ADVERSE DRUG REACTIONS IN GENERAL PRACTICE - AN ANALYSIS

Aim: To study the pattern of cutaneous adverse drug reactions presenting to general practitioners in a semi urban area.  Methodology and Results: This study was conducted among general practitioners of Villupuram, a semi urban area in Tamilnadu State. During the study, a total of 60 CADRs were reported. Data were collected using standard CDSCO ADR form. The majority of CADRs were observed in the age group of 20-40 years. According to WHO causality assessment, 48 were probable and 12 were possible. The severity assessment using modified hartwig and seigel revealed 18 mild, 41 moderate and one severe CADRs. The common drug groups implicated are antibiotics followed by NSAIDS and anticonvulsants. Maculopapular rash was the most common presentation of CADRs.Conclusion: Among the various types of CADRs seen in this study, Maculopapular rash was the most common followed by fixed drug eruption. studies antimicrobials were the most common causative agent followed by NSAIDs and anti- convulsants. This study on CADRs gains importance as the pattern of drug use is changing periodically and everyday many new drugs enter the market

Alternate Regime in Dyslipidemia

INTRODUCTION: Dyslipidemia, which includes hypercholesterolemia and reduced level of HDL-C are the major reason for increased risk of atherogenesis. The sedentary life style &genetic disorders with diets rich in saturated fat & cholesterol contributes this non communicable disease. The drugs most commonly used for dyslipidemia are statins and fibrates. Though the therapy may be started with either statin or fibrates, ultimately most of these patients require both the drugs or some other combination therapy. METHODS: Eligible patients with dyslipidemia were randomly allotted into 2 equal groups- daily regime group (group 1) and alternate regime group (group 2). Patients in group 1 received atorvastatin 10 mg and fenofibrate 160 mg daily and group 2 received on alternate days, respectively for 6 weeks & follow up by 12th week. Mean percentage change from baseline in total cholesterol (TC), triglycerides (TGs), low-density lipoprotein cholesterol (LDL-C), VLDL-C, HDLC and TC-HDL ratio, incidence of adverse effects, and cost-effectiveness were compared in both the groups. RESULTS: Among 93 patients screened, 60 were randomized into 2 groups as group1 & 2 with 30 patients in each. The TC, LDL-C, TGs, VLDL-C decreased by 46.03%, 47.23%, 58.67%, and 45.39% in alternate regime group and by 46.67%, 48.01%, 59.88%, and 46.31% in daily regime group. The HDL-C levels increased by 29.32% in alternate day therapy group compared to 32.11% in daily therapy group. No statistically significant difference was seen between both the groups in mean percentage change in lipid parameters from baseline to end of 12 weeks. TC-HDL ratio was 3.50 in group1 and 3.54 in group 2.Incidence of adverse events were reasonably less in alternate day therapy group. CONCLUSION: Alternate regime of atorvastatin 10 mg on one day & fenofibrate 160 mg on other day is equally efficacious to daily regime of both atorvastatin10 mg and fenofibrate 160 mg with better cost effectiveness & better patient compliance in patients with secondary dyslipidemia

Growth and Biochemical Changes of Vegetable Seedlings Induced by Arbuscular mycorrhizal Fungus

Department of Botany, Annamalai University, Annamalai Nagar – 608 002ABSTRACT: The efforts were made to study the effects of Arbuscular Mycorrhizal fungi (AM) on the morphological and biochemical changes of four different vegetable seedlings grown under nursery conditions. The symbiotic association between AM fungi and plant roots provides a significant contribution to plant nutrition and growth. Hence, an attempt has been made to examine the effect of AM fungi on the four vegetable crops such as Tomato (Lycopersicum esculentum L.), Brinjal (Solanum melongena L.), Chilli (Capsicum annuum L.) and Bhendhi (Abelmoschus esculentus Moench.). The maximum increase in four plant’s morphological parameters like root length, shoot length, fresh weight, dry weight, number of leaves, total leaf area and biochemical parameters like chlorophylls, proteins and nutrient content of nitrogen, phosphorus and potassium were observed in AM fungi treated seedlings when compared to non-mycorrhizal seedlings (controlled). The sugar and starch contents showed decrease in mycorrhizal seedlings than non-mycorrhizal one. Key words: Glumus fasciculatum, Vegetables, Morphological parameters, Biochemical content Department of Botany, Annamalai University, Annamalai Nagar – 608 002M. Lenin, G. Selvakumar, P. Thamizhiniyan, R. Rajendiran. Growth and Biochemical Changes of Vegetable Seedlings Induced by Arbuscular mycorrhizal Fungus. J. Exp. Sci. 1(4):27-31 Please Cite This Article As

Code In The Air: Simplifying Sensing and Coordination Tasks on Smartphones

A growing class of smartphone applications are tasking applications that run continuously, process data from sensors to determine the user's context (such as location) and activity, and optionally trigger certain actions when the right conditions occur. Many such tasking applications also involve coordination between multiple users or devices. Example tasking applications include location-based reminders, changing the ring-mode of a phone automatically depending on location, notifying when friends are nearby, disabling WiFi in favor of cellular data when moving at more than a certain speed outdoors, automatically tracking and storing movement tracks when driving, and inferring the number of steps walked each day. Today, these applications are non-trivial to develop, although they are often trivial for end users to state. Additionally, simple implementations can consume excessive amounts of energy. This paper proposes Code in the Air (CITA), a system which simplifies the rapid development of tasking applications. It enables non-expert end users to easily express simple tasks on their phone, and more sophisticated developers to write code for complex tasks by writing purely server-side scripts. CITA provides a task execution framework to automatically distribute and coordinate tasks, energy-efficient modules to infer user activities and compose them, and a push communication service for mobile devices that overcomes some shortcomings in existing push services.National Science Foundation (U.S.) (Grant 0931550

Reduction of Real Power Loss and Safeguarding of Voltage Constancy by Artificial Immune System Algorithm

In this paper, Artificial Immune System (AIS) algorithm is used for solving reactive power problem. Artificial Immune System Algorithm, also termed as the machine learning approach to Artificial Intelligence, are powerful stochastic optimization techniques with potential features of random search, hill climbing, statistical sampling and competition. Artificial immune system algorithmic approach to power system optimization these ideas are embedded into proposed algorithm for solving reactive dispatch problem. In order to evaluate the proposed algorithm, it has been tested in standard IEEE 30,118 bus systems and compared to other specified algorithms. Simulation results show better performance of the proposed AIS algorithm in reducing the real power loss and preservation of voltage stability

Growth and Nutrient Content Variation of Groundnut Arachis hypogaea L. under Vermicompost Application

Plant nutrients are essential for the production of crops and healthy food in the worlds expanding population. Plant nutrients are therefore a vital component of sustainable agriculture.  The use of chemical fertilizers, contributes largely depletion of fossils fuels, generation of carbon dioxide and contamination of water resource it leads to loss of soil fertility due to imbalance use of fertilizers that has adversely impacted agriculture productivity and causes of soil degradation. Now there is a growing realization that the adoption of ecological and sustainable farming practices can only reverse the declining trend in the global productivity and environmental protection. So the present study was carried out the impact of vermicompost on groundnut (Arachis hypogaea L.). Three experimental plots were prepared control, T1- 1 ton h-1; T2-2 ton h-1; T3- 3 ton h-1 and T4- 4 ton h-1 to test the plant production patterns, under field conditions. The morphological parameters such as root length, shoot length, number of leaves, fresh weight, dry weight and root nodules, yield parameters and the nutrient content viz., nitrogen, phosphorus, potassium were analyzed at 120 days of plants.  All the morphological parameters and nutrient contents were higher in T4 treatments, when compared with other treatments.Â

Improvement of Weld Bead Characteristics in Gas Metal Arc Welding of SA515 Carbon Steel by Applying Alternating Shielding Gas Flow Technique

High service temperature of pressure vessel components necessitates the use of welded SA515 grade carbon steel components. The gas metal arc welding (GMAW) process using CO2 as shielding gas is known for its undesirable spatter behaviour and inferior weld quality. The alternating shielding gas flow (ASGF) technique is proposed in this study using the shielding gases, viz. CO2 and argon to overcome this difficulty. The welding current, stand-off distance, and shielding gas flow were all varied to improve the bead-on-plate profile geometry. The bead profile parameters such as depth of penetration, bead width, and bead height are considered as weld bead parameters. The following methods are used: correlation analysis, analysis of variance (ANOVA), modelling, and grey relational analysis (GRA). According to the findings, the welding current and ASGF are the most influential parameters impacting the weld bead characteristics. By increasing the welding current, the bead profile parameters increase linearly. The geometry of the bead profile was improved by using the GRA