Pragnesh Dave (53 results)

Paperback or Softback. Condition: New. Corrosion Inhibition of Aluminium in Hydrochloric Acid by Natural Plant Extracts. Book.

Condition: New.

Taschenbuch. Condition: Neu. Druck auf Anfrage Neuware - Printed after ordering - Research Paper (postgraduate) from the year 2014 in the subject Chemistry - General, grade: 3, , course: MSc, language: English, abstract: Aluminium, being a highly reactive metal, corrodes rapidly in acidic (pH 12.5) media. Hence it has to be protected when it is likely to come in contact with such solutions, e.g., during cleaning or acid pickling. One method of protection is the addition of inhibitor to the corroding medium. In the present work, ethanol extract of Azadirechta indica and Murraya koenigii leaves have been investigated as corrosion inhibitor for aluminium in aqueous hydrochloric acid.The corrosion of Alluminium in plain hydrochloric acid, as well as inhibited, is found to increase with a rise in temperature. Thus in uninhibited 0.5 M HCl the loss in weight due to corrosion for an exposure period of 60 min increases from 736 mg/dm2 at 35oC to 852, 922, and 958 mg/dm2 at 45oC, 55oC and 65oC respectively.In inhibited 0.5 M HCl containing 1.30% of Azadirechta indica, it was observed that at 35oC and for an exposure period of 60 min Azadirechta indica confer 100.0% protection. In A. indica, it is observed that the compound at 1.30% concentration show an efficiency 100.0% at 35°C. As the temperature is increased the efficiency decreases. In the case of A.indica, the efficiency decreases slightly and is found to be 72.96% at 65°C. It appears that in the case of Azadirechta indica, the adsorption is of physisorption type which decreases with a rise in temperature.The surface morphology of the Al samples in the absence and presence of A.indica and M.koenigii leaves extract was investigated after weight loss using SEM technique. The badly damaged surface obtained when the metal was kept immersed in 0. 5 M HCl for 60 min without inhibitor indicates significant corrosion. However, in presence of inhibitor the surface has remarkably Improve with respect to its smoothness indicating considerable reduction of corrosion rate. This improvement in surface morphology is due to the formation of a good protective film of inhibitor on aluminium surface which is responsible for inhibition of corrosion. The order of efficiency at 1.30% v/v inhibitor concentration in 0.5 M hydrochloric acid was found to be : Azadirechta indica (100.0%) Murraya koenigii ( 94.79%). …

Condition: New. pp. 104.

Paperback. Condition: Brand New. 76 pages. 8.66x5.91x0.18 inches. In Stock.

Condition: New. pp. 112.

Condition: New.

Taschenbuch. Condition: Neu. Study of Removal of Heavy Metal Pb (II) by Batch Experiment | Pragnesh Dave (u. a.) | Taschenbuch | 76 S. | Englisch | 2017 | LAP LAMBERT Academic Publishing | EAN 9783330351349 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.…

Taschenbuch. Condition: Neu. Nanocatalyst for composite solid rocket propellants | Nanocatalyst as potential burning rate modifier for composite solid rocket propellants | Pragnesh Dave (u. a.) | Taschenbuch | 84 S. | Englisch | 2010 | LAP LAMBERT Academic Publishing | EAN 9783838377216 | Verantwortliche Person für die EU: BoD - Books on Demand, In de Tarpen 42, 22848 Norderstedt, info[at]bod[dot]de | Anbieter: preigu.…

Taschenbuch. Condition: Neu. Catalytic Combustion Chamber | Combustion Chamber | Pragnesh Dave (u. a.) | Taschenbuch | Englisch | LAP Lambert Academic Publishing | EAN 9783848413034 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu. …

Taschenbuch. Condition: Neu. Preparation of Chitosan Nanoparticals coated K- Fertilizers | Pragnesh Dave (u. a.) | Taschenbuch | 112 S. | Englisch | 2013 | LAP LAMBERT Academic Publishing | EAN 9783659402494 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.…

Condition: New. pp. 216.

Taschenbuch. Condition: Neu. Nano-Alloys: as Potential Modifier | Pragnesh Dave (u. a.) | Taschenbuch | 160 S. | Englisch | 2014 | LAP LAMBERT Academic Publishing | EAN 9783659593475 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu. …

Taschenbuch. Condition: Neu. Multiple unsaturated poly(urethane-ester) containing epoxy residues | Pragnesh Dave | Taschenbuch | 216 S. | Englisch | 2014 | LAP LAMBERT Academic Publishing | EAN 9783659436437 | Verantwortliche Person für die EU: BoD - Books on Demand, In de Tarpen 42, 22848 Norderstedt, info[at]bod[dot]de | Anbieter: preigu.…

Taschenbuch. Condition: Neu. Kinetic and Thermodynamic study of Adsorption of Ionic Dyes | Pragnesh Dave (u. a.) | Taschenbuch | 260 S. | Englisch | 2016 | LAP Lambert Academic Publishing | EAN 9783659743177 | Verantwortliche Person für die EU: BoD - Books on Demand, In de Tarpen 42, 22848 Norderstedt, info[at]bod[dot]de | Anbieter: preigu.…

Paperback. Condition: Like New. LIKE NEW. SHIPS FROM MULTIPLE LOCATIONS. book.

Paperback. Condition: Like New. LIKE NEW. SHIPS FROM MULTIPLE LOCATIONS. book.

paperback. Condition: Like New. LIKE NEW. SHIPS FROM MULTIPLE LOCATIONS. book.

paperback. Condition: New. NEW. SHIPS FROM MULTIPLE LOCATIONS. book.

paperback. Condition: New. NEW. SHIPS FROM MULTIPLE LOCATIONS. book.

Taschenbuch. Condition: Neu. The study of the stain resistance of vitrified tiles | Pragnesh N. Dave (u. a.) | Taschenbuch | 104 S. | Englisch | 2013 | LAP LAMBERT Academic Publishing | EAN 9783659340819 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu.…

Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The contamination of toxic heavy metal ions into the environment is a crucial problem today. The pollution is prevalent in majority countries and threatens the environment, the health of humans and wildlife. Among them Pb is the one of the most toxic element today. Here used leaf powder of aegle mermelos that contain adsorption capacity to remove heavy metal Pb. As well as this material contain a particular characteristics like that low cost, naturally easily available and not harmful. The purpose of study to observe the abosorption capacity of this plant material. 76 pp. Englisch.…

Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -The nanosciences have recently evolved as a major research direction of our modern Society resulting from an ongoing effort to miniaturize at the nanoscale processes that currently use microsystems. Towards this end, it is well admitted that the bottom - up approach should now replace the classic top - down one, a strategic move that is common to several areas of nanosciences including opto - electronics, sensing, medicine and catalysis . The latter discipline certainly is the key one for the development of starting chemicals, fine chemicals and drugs from raw materials. Exciting new opportunities are emerging in the field of catalysis based on nanotechnology approaches. A new understanding and mastery of catalysis could have broad societal impacts, since about 80% of the processes in the chemical industry depend on catalysts to work efficiently. Efforts in surface science have led to the discovery of new heterogeneous catalysts. 84 pp. Englisch. …

Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -In this study, chitosans was deacetylated with 45% sodium hydroxide under air atmosphere at 80 °C for up to 3 hour, to obtain deacetylated chitosan DDA measure by potentiometer titration method. Deacylated chitosan polymerizing methacrylic acid (DDCSPMAA) nanoparticle is an interesting material for use in controlled release for K fertilizers. In this work chitosan nanoparticles were obtained by polymerizing methacrylic acid for the incorporation of potassium chloride for potassium(K) fertilizers. The interaction and stability of chitosan nanoparticle suspensions containing K was evaluated by SEM. The SEM results indicated the existence of electrostatic interactions between chitosan nanoparticles and the elements K. The stability of the DDCS-PMAA colloidal suspension was higher with the addition of potassium due to the higher anion charge of potassium chloride. The use of slow release fertilizer has become a new trend to save fertilizer consumption and to minimize environmental pollution. Due to its polymeric cationic, biodegradable, bioabsorbable, and bactericidal characteristics. 112 pp. Englisch. …

Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -This work includes the following: synthesis of the sol-gel organo silane based coating & the highlight of raise in the surface defeacts in order to grinding & polishing parameters kept in the manufacture of vitrified tile. 104 pp. Englisch.…

Condition: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Dave PragneshProf Pragnesh N Dave is working as Professor in the filed of Environment Science & Technology for past 20 years.Dr Vijay R Ram is working in the filed of Analytical Science for past 06 years.Ms Sejal Sadhu is M Sc disser.…

Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - In this study, chitosans was deacetylated with 45% sodium hydroxide under air atmosphere at 80 °C for up to 3 hour, to obtain deacetylated chitosan DDA measure by potentiometer titration method. Deacylated chitosan polymerizing methacrylic acid (DDCSPMAA) nanoparticle is an interesting material for use in controlled release for K fertilizers. In this work chitosan nanoparticles were obtained by polymerizing methacrylic acid for the incorporation of potassium chloride for potassium(K) fertilizers. The interaction and stability of chitosan nanoparticle suspensions containing K was evaluated by SEM. The SEM results indicated the existence of electrostatic interactions between chitosan nanoparticles and the elements K. The stability of the DDCS-PMAA colloidal suspension was higher with the addition of potassium due to the higher anion charge of potassium chloride. The use of slow release fertilizer has become a new trend to save fertilizer consumption and to minimize environmental pollution. Due to its polymeric cationic, biodegradable, bioabsorbable, and bactericidal characteristics.…

Taschenbuch. Condition: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -Nanomaterials have wide range of applications such as catalysis,medicine, electronics, lubricants, medical implants, water purification, fuel additives, energy production etc. Studies on nanomaterials, such as transition metal oxides, cobaltite, ferrites, metals and their alloys have been undertaken. Chapter 1 includes general information about nanomaterials, their properties, classification (1D, 2D and 3D) on the basis of dimensions, significance of materials on nano scale and their applications. Several methods of synthesis of nanomaterials such sol-gel, co-percipitation, template synthesis etc. along with detail of various techniques used for their characterization such as TEM, SEM, HRTEM, XRD etc. Studies embodied in Chapter 2 isabout ammonium perchlorate, their Properties, and Mechanism of thermal decomposition and effect of metal and alloys on their thermal decomposition of AP are also discussed. Details about AP based propellants are included. Components like oxidizer, meral fuel, binder, plasticizer modifier, curing agent and properties of propellants are mentioned. 160 pp. Englisch. …

Condition: New. Print on Demand pp. 104 2:B&W 6 x 9 in or 229 x 152 mm Perfect Bound on Creme w/Gloss Lam.

Taschenbuch. Condition: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Our work explains basics of engine and thermodynamics involved in it. Formation of combustion products and chemical equilibrium between the combustion products formed are key challenges of ic engine s. Requirement of new engines to overcomes those challenges. Discussing about the tribological material and its interaction inside the ic engines, we seek for specialized coatings in order to provide a catalytic combustion chamber which enhances combustion, increases efficiency of the engines, reduces emission of pollutants, and reduces wear of the tribological materials and extending their life. Selection of coatings based upon the desired characteristics for the overall upliftment of the engine performance. Thermal barrier coating and nanocoatings of the desired material can be achieved with atmosphere plasma sprayed coating (aps) and high velocity oxy-fuel coating (hvof) technologies which can be applied on the desired surface for achieving better efficiency from the engines which effects and consequences of coating on ic engine performance. …