Appl Phys Lett 2006, 88:1–3.CrossRef 14. Kim JP, Chang HB, Kim BJ, Selleckchem 3-deazaneplanocin A Park JS: Emission stability enhancement of a tip-type carbon-nanotube-based field emitter via hafnium interlayer deposition and thermal treatment. Appl Phys Lett 2012, 100:123103–1-123103–3. 15. Park JS, Kim JP, Noh YR, Jo KC, Lee SY, Choi HY, Kim JU: X-ray images obtained from cold cathodes using carbon nanotubes coated with gallium-doped zinc oxide

thin films. Thin Solid Films 2010, 519:1743–1748.CrossRef 16. Sun JP, Zhang ZX, Hou SM, Zhang GM, Gu ZN, Zhao XY, Liu WM, Xue ZQ: Work function of single-walled carbon nanotubes determined by field emission microscopy. Appl Phys Mater Sci Process 2002, 75:479–483.CrossRef 17. Zhang YL, Zhang LL, Hou PX, Jiang H, Liu C, Cheng HM: Synthesis and field emission property of carbon nanotubes with sharp tips. Xinxing Tan Cailiao/New Carbon Mater 2011, 26:52–56.CrossRef 18. Jung SI, Jo SH, Moon HS, Kim JM, Zang DS, Lee CJ: Bafilomycin A1 price Improved crystallinity of double-walled carbon nanotubes after a high-temperature thermal annealing

and their enhanced field emission properties. J Phys Chem C 2007, 111:4175–4179.CrossRef 19. Okpalugo TIT, Papakonstantinou P, Murphy H, McLaughlin J, Brown NMD: High resolution XPS characterization of chemical functionalised MWCNTs and SWCNTs. Carbon 2005, 43:153–161.CrossRef 20. Lesiak B, Zemek J, Jiricek P, Phosphoprotein phosphatase Stobinski L: Temperature modification of oxidized multiwall carbon nanotubes studied by electron spectroscopy methods. Phys Status Solidi B 2009, 246:2645–2649.CrossRef 21. Choi HC, Bae SY, Jang WS, Park J, Song HJ, Shin HJ, Jung H, Ahn JP: Release of N 2 from the carbon

nanotubes via high-temperature annealing. J Phys Chem B 2005, 109:1683–1688.CrossRef 22. Hinnen C, Imbert D, Siffre JM, Marcus P: An in situ XPS study of sputter-deposited aluminium thin films on graphite. Appl Surf Sci 1994, 78:219–231.CrossRef 23. Nilsson L, JNJ-26481585 supplier Groening O, Groening P, Schlapbach L: Collective emission degradation behavior of carbon nanotube thin-film electron emitters. Appl Phys Lett 2001, 79:1036–1038.CrossRef Competing interests The authors declare that they have no competing interests. Authors’ contributions BJK, JPK, and JSP have made substantial contributions to the conception, acquisition, and interpretation of data. All authors have been involved in drafting the manuscript and approved the final manuscript.”
“Review Introduction Globally, incredible changes in agricultural production patterns have taken place. It has become possible only through the application of modern labour saving technologies for intensive on-farm mechanization, irrigation, postharvest handling and use of improved crop varieties. Despite the tremendous progress made in agricultural productivity, still there exists food insecurity and poverty in many developing countries.