Results 31 to 40 of about 269,123 (282)

Antenna design for solid material characterization [PDF]

, 2022
In this project design solid antenna are designed that are suitable for with MUT application with enhanced bandwidth. The proposed antenna was designed in CST studio software. To begin the design, a suitable substrate was chosen for the antenna.
Abdullah Aqlan, Ahmed Abdulbaset
core   +1 more source

Co@N-doped Porous Carbon Derived from Co-MOFs as an Efficient Bifunctional Electrocatalysts for Full Water Splitting

International Journal of Electrochemical Science, 2021
Co@N-doped porous carbon were prepared by a one-step pyrolysis method derived from Co-MOFs. The obtained Co@N-doped porous carbon have a large number of metallic Co nanoparticles and contain considerable mesopores.
Min Zhao, Changjuan Hu, Gaoliang Zhou, Xinyi Shen, Wei Tan, Jianguo Lv, Shengjie Sun, Yuxuan Ma, Ying Wang, Junjun Zhang, Jin Yang, Miao Zhang, Gang He, Lei Yang   +13 more
doaj   +1 more source

Development of a STEP-compliant design and manufacturing framework for discrete sheet metal bend parts [PDF]

, 2016
Metal sheets have the ability to be formed into nonstandard sizes and sections. Displacement-controlled computer numerical control press brakes are used for three-dimensional sheet metal forming.
Ali, Liaqat, Baqai, Aamer Ahmed, Choudhry, Rizwan Saeed, Faraz, Zahid, Jaffery, Syed Husain Imran, Khan, Mushtaq, Mahmood, Khalid, Tarar, Wasim Akram, Waheed ul Haq, Syed   +8 more
core   +2 more sources

Step-by-step morpho-physiological responses of Arachis hypogaea L. cv. NC 2 to iron deficiency

Plant, Soil and Environment, 2007
Well-aerated and alkaline soils are proven to lack plant-available iron. Fe-efficient plants, however, induce morpho-physiological and biochemical mechanisms of adaptation.
A. Gholizadeh, B. Baghban Kohnehrouz, H. Hekmatshoar   +2 more
doaj   +1 more source

Packing State Management to Realize Dense and Semiconducting Lead Sulfide Nanocrystals Film via a Single-Step Deposition

Cell Reports Physical Science, 2020
Summary: The long alkyl ligands on nanocrystal (NC) surfaces must be exchanged with short ligands to render NC films semiconducting for optoelectronic applications. It has become the consensus that through this process, it is unavoidable that detrimental
Kunyuan Lu, Xing Meng, Zeke Liu, Jun Chen, Yongjie Wang, Yannan Zhang, Xuliang Zhang, Erik Sarnello, Guozheng Shi, Radhika P. Patil, Wei Deng, Sijie Zhou, Mengfan Gu, Yaxu Zhong, Soojin Jeong, X. Wendy Gu, Tao Li, Xingchen Ye, Wanli Ma   +18 more
doaj   +1 more source

Physical Phenomenology of Phyllotaxis [PDF]

, 2011
We propose an evolutionary mechanism of phyllotaxis, regular arrangement of leaves on a plant stem. It is shown that the phyllotactic pattern with the Fibonacci sequence has a selective advantage, for it involves the least number of phyllotactic ...
Adler, Adler, Bryntsev, Coxeter, Coxeter, Douady, Fujita, Fujita, Graham, Hellwig, Jean, Kuhlemeier, Larson, Levitov, Marzec, Richards, Ridley, Rivier, Rothen, Rothen, Schwendener, Snow, Takuya Okabe, Thompson, Thornley, van Iterson, Zagórska-Marek   +26 more
core   +1 more source

Preparation and characterization of ZnO, MgO and ZnO–MgO hybrid nanomaterials using green chemistry approach

Results in Materials, 2020
In the present study, a novel green synthesis of ZnO, ZnO–MgO nanocomposites (NC) [NC-1 (25% Zn - 75% MgO); NC-2 (50% Zn – 50% MgO); (75% Zn – 25% MgO)] and MgO nanomaterials using red seaweed was proposed.
Jayakaran Pachiyappan, Nirmala Gnanasundaram, Govindarajan Lakshmana Rao   +2 more
doaj   +1 more source

Thermo‑mechanical properties of various densities of foamed concrete incorporating polypropylene fibres [PDF]

, 2020
Concrete has been extensively used in the development of urban infrastructure works. However, it has the tendency to absorb solar radiations, and these radiations are released back into the air in the form of heat energy.
Ahmed Jhatial, Ashfaque, Goh, Wan Inn, Mohamad, Noridah, Sohu, Samiullah   +3 more
core   +1 more source

Extensión del estándar ISO 10303 AP-238 para la automatización del acceso a datos de procesos CNC

Revista Iberoamericana de Automática e Informática Industrial RIAI, 2009
Resumen: El nuevo estándar ISO 10303-AP238 (STEP-NC) abre nuevas posibilidades para la comunicación de datos entre sistemas CAD/CAM y sistemas de fabricación CNC.
J. Garrido, R. Marín, J. Ignacio, J. Sáez   +3 more
doaj   +1 more source

Design and implementation of a function block-based holonic control architecture for a new generation flexible manufacturing system [PDF]

, 2017
In this research work a control architecture which gives response to the requirements of new generation of flexible manufacturing systems in terms of flexibility, reconfigurability, robustness and autonomy is designed and implemented.
Estruch Ivars, Antonio, Querol, Esteban, Romero Pérez, Julio Ariel, Romero Subirón, Fernando, Serrano Mira, Julio   +4 more
core   +1 more source