1,589 research outputs found

    Iron Age in Southeast Asia

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    Book review: What do we know and what should we do about social mobility? By Lee Elliott Major and Stephen Machin

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    In What Do We Know and What Should We Do About Social Mobility? Lee Elliott Major and Stephen Machin give an account of the long experience of social mobility in the UK, its barriers and a possible way out. Offering a strong base for those who are new to the subject and fresh viewpoints to those more well-versed in the topic, this is a timely read for all, especially those in the social sciences and policymakers, writes Kishor K. Podh. What Do We Know and What Should We Do About Social Mobility? Lee Elliott Major and Stephen Machin. SAGE. 2020

    Analysis of Combustion Characteristics with Catalytic Coated Cylinder Head in Two Stroke Spark Ignition Engine using Gasoline-Methyl Alcohol Blend

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    Experiments were conducted to analyze the combustion characteristics of two stroke single cylinder, spark ignition (SI) engine, using gasoline blended with methyl alcohol (80% gasoline, 20% methyl alcohol, by volume) having catalytic coated engine [CCE, copper-(thickness, 300 microns) sprayed on the inner surface of cylinder head] and compared with conventional SI engine (CE) operating on pure gasoline. Combustion characteristics [peak pressure (PP), time of occurrence of peak pressure (TOPP), maximum rate of pressure rise (MRPR), maximum heat release (MHR) and temperature of burned gases at exhaust port opening (EPO)] were determined at full load operation of the engine by special P-? software package. Catalytic coated combustion chamber with methyl alcohol blended gasoline increased the PP, decreased the TOPP, increased the MRPR, increased the MHR and decreased the temperature of burned gases at EPO when compared with pure gasoline operated CE

    Control of Exhaust Emissions from Two Stroke SI Engine having Copper Coated Piston with Methanol Blended Gasoline with Catalytic Converter

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    Experiments were conducted to evaluate and control the exhaust emissions from two stroke single cylinder, spark ignition (SI) engine, with alcohol blended gasoline (80% gasoline, 20% methanol, by volume) having copper coated engine [CCE, copper-(thickness, 300 ?) coated on piston crown] provided with catalytic converter with sponge iron and manganese ore as as catalysts and compared with conventional SI engine (CE) with pure gasoline operation. The exhaust emissions of carbon monoxide (CO) and unburnt hydrocarbons (UBHC) were determined at different values of Brake Mean Effective Pressure (BMEP) with Netel Chromatograph CO/UBHC analyzer. Aldehyde levels were determined by Dinitrophenyl Hydrazine (DNPH) method. Copper coated combustion chamber with alcohol blended gasoline with catalytic converter using sponge iron catalyst with air injection significantly reduced the pollutants in comparison with CE with pure gasoline operation

    Mi-1-mediated resistance to Meloidogyne incognita in tomato may not rely on ethylene but hormone perception through ETR3 participates in limiting nematode infection in a susceptible host.

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    Root-knot nematodes, Meloidogyne spp., are important pests of tomato (Solanum lycopersicum) and resistance to the three most prevalent species of this genus, including Meloidogyne incognita, is mediated by the Mi-1 gene. Mi-1 encodes a nucleotide binding (NB) leucine-rich repeat (LRR) resistance (R) protein. Ethylene (ET) is required for the resistance mediated by a subset of NB-LRR proteins and its role in Mi-1-mediated nematode resistance has not been characterized. Infection of tomato roots with M. incognita differentially induces ET biosynthetic genes in both compatible and incompatible interactions. Analyzing the expression of members of the ET biosynthetic gene families ACC synthase (ACS) and ACC oxidase (ACO), in both compatible and incompatible interactions, shows differences in amplitude and temporal expression of both ACS and ACO genes in these two interactions. Since ET can promote both resistance and susceptibility against microbial pathogens in tomato, we investigated the role of ET in Mi-1-mediated resistance to M. incognita using both genetic and pharmacological approaches. Impairing ET biosynthesis or perception using virus-induced gene silencing (VIGS), the ET-insensitive Never ripe (Nr) mutant, or 1-methylcyclopropene (MCP) treatment, did not attenuate Mi-1-mediated resistance to M. incognita. However, Nr plants compromised in ET perception showed enhanced susceptibility to M. incognita indicating a role for ETR3 in basal resistance to root-knot nematodes

    Instrumentation, Monitoring and Analysis of a Landslide − A Case Study

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    Powari Landslide which is situated at Km.367 on National Highway-22, on the right bank of river Sutlej in Kinnaur District of Himachal region of North-Western Himalaya has been active since 1987 and recurring every year in the months of July-Sept and March-May. The traffic interruption due to this slide was estimated in one year as 25 full days. 60 half days and 55 less than half days. Money spent each year only to clean the slided debris was estimated approximately from 70,000 to 2,00,000 in Indian rupees. Geological and geotechnical investigations followed by instrumentation and monitoring of this typical landslide was carried out to notice the nature, magnitude, rate and direction of movement on its surface and subsurface part from 1992 to 1995. Remedial measures recommended on the basis of such studies are also described

    Acute eosinophilic pneumonia following recent cigarette smoking

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    AbstractIn this report we describe the case of an 18 year old female who presented with fever, shortness of breath, and chest pain. Chest X-ray revealed diffuse bilateral infiltrates and eosinophilia was reported from her broncholaveolar lavage (BAL) fluid. She started smoking 3 weeks prior to the onset of symptoms and based on her clinical presentation, BAL findings and dramatic improvement, acute eosinophilic pneumonia (AEP) was diagnosed

    Antidiabetic and antihyperlipidemic activities of a novel polyherbal formulation in streptozotocin - nicotinamide induced diabetic wistar rats

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    Objective: To investigate the antidiabetic and antihyperlipidemic activities of polyherbal formulation (PHF) containing seven plants namely Cassia auriculata, Cassia fistula, Syzygium cumini, Cyperus rotundus, Saussurea lappa, Terminalia arjuna and Salacia reticulate in streptozotocin (STZ) - nicotinamide (NC) induced diabetic rats by administering oral doses (200 and 400 mg/kg body weight). Materials and Methods: Animals were divided into diabetic and nondiabetic groups. Rats were fed with normal laboratory diet and induced with a single intraperitoneal injection of 60mg/kg of STZ, and thereafter 120 mg/kg NC was injected after 15min. Diabetic rats were treated with formulation (200 and 400 mg/kg) and glibenclamide 5 mg/kg. Blood glucose levels were measured using blood glucose test strips with ACCU CHEK glucometer. Glycosylated haemoglobin, total haemoglobin, lipid profiles, lipoproteins, hepatic marker enzymes activity were determined in normal and STZ- NC induced diabetic rats after oral administration of the PHF for 28 days. Histopathological changes in normal and diabetic rat pancreas organs were also observed after PHF treatment.The statistical analysis of results was carried out using one-way analysis (ANOVA) followed by post hoc multiple comparison tests. Results: Treatment of diabetic rats with PHF (200 and 400 mg/kg) and glibenclamide (5 mg/kg) indicate significant decreased blood glucose level and significant improvement in body weight. PHF treated rats showed significant (P < 0.01) decrease in the level of HbA1C, TC, TG, LDL, VLDL, AST, ALT and ALP while a significant increment in the level of Hb, HDL cholesterol was observed. Furthermore, the PHF treated rats has a favourable effect on the histopathological changes of the pancreas in STZ-NC induced diabetes. Conclusion: These findings suggested the antihyperglycemic and antihyperlipidemic properties of the PHF and thus help in preventing future complications of diabetes
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