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Wyszukujesz frazę "Rajesh, R." wg kryterium: Autor


Tytuł:
Laser beam welding: research state of the art on performance and measures
Autorzy:
Chandran, Sudhin
Rajesh, R.
Devanand, M.
Tematy:
laser welding
beam width
heat treatment
performance measures
maximum performance
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Powiązania:
https://bibliotekanauki.pl/articles/2049943.pdf  Link otwiera się w nowym oknie
Opis:
Laser beam welding (LBW) is a remarkable method for combining dissimilar materials, primarily when the unique amalgamation of metals is necessary. LBW, owing to attractive features, namely: low heat input, high heat concentration, high power density and low distortion is one of the more advantageous methods for, e.g., welding and repair of aircraft and turbine engine elements, constructed from superalloy. In this paper, the literature is scrutinized on diverse techniques that are associated with laser welding systems. The review is provided of several dozen research articles, involving an appropriate analysis. Initially, the analysis depicts various schemes that are contributed in different articles. Subsequently, the analysis also focuses on various particular features such as laser beam width and type of laser, and it also considers the heat treatment analysis that is contained in each of the articles reviewed. Furthermore, the present paper provides a detailed study regarding the performance measures and maximum performance achievements regarding each contribution accounted for. Finally, it indicates the various research issues, which can be useful for the researchers to carry out further research on laser welding systems. Of particular interest to the Readers of this journal is the fact of ample application of modelling, identification, data processing, image processing and AI tools in the respective surveyed studies.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Screening and characterization of Fibrinolytic protease producing Bacillus circulans from mangrove sediments pitchavaram, South East Coast of India
Autorzy:
Sadeesh Kumar, R.
Rajesh, R.
Gokulakrishnan, S.
Subramanian, J.
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:
https://bibliotekanauki.pl/articles/11234.pdf  Link otwiera się w nowym oknie
Opis:
Regulation and production of Fibrinolytic enzymes from bacterial sources especially from Bacillus strains has taken a leading role in the medical sciences for the treatment of cardiovascular disorders as it removes thrombus or clots adding to its significant role in curing human health issues saving millions. Significant progress has been made during the last few years on the studies of fibrinolytic enzymes in identifying, cloning, purification, characterization and overproduction of these for commercialization in medical sciences and in fields like detergents development. Production of fibrinolytic enzyme from Bacillus circulans was done using Nutrient broth medium. In addition, a strong fibrinolytic enzyme was purified from the cultivation media. The purified enzyme was almost homogeneous with other species of same genus, as examined by SDS−PAGE and sephadex G-75 column chromatography. The enzyme had an optimal pH of 7-12, an optimal temperature of 50 °C, for fibrin hydrolysis. The molecular mass estimated by gel filtration was 24 to36 KDa. Further studies for characterization and structural elucidation are necessary for their medicinal applications and molecular biological characteristics.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Outage Performance of Bidirectional Full-Duplex Amplify-and-Forward Relay Network with Transmit Antenna Selection and Maximal Ratio Combining
Autorzy:
Rajesh, R.
Velmurugan, P. G. S.
Thiruvengadam, S. J.
Mallick, P. S.
Tematy:
channel state information
Nakagami-m fading channel
self interference
SINR
Pokaż więcej
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Powiązania:
https://bibliotekanauki.pl/articles/307966.pdf  Link otwiera się w nowym oknie
Opis:
In this paper, a bidirectional full-duplex amplify- and-forward (AF) relay network with multiple antennas at source nodes is proposed. Assuming that the channel state information is known at the source nodes, transmit antenna selection and maximal ratio combining (MRC) are employed when source nodes transmit information to the relay node and receive information from the relay node respectively, in order to improve the overall signal-to-interference plus noise ratio (SINR). Analytical expressions are derived for tight upper bound SINR at the relay node and source nodes upon reception. Further, losed form expressions are also derived for end-to-end outage probability of the proposed bidirectional full-duplex AF relay network in the Nakagami-m fading channel environment. Although self-interference at the relay node limits the performance of the full-duplex network, the outage performance of the proposed network is better than that of conventional bidirectional full-duplex and half-duplex AF relay networks, due to the selection diversity gain in TAS and diversity and array gain in MRC.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fabrication and Characterization of Al6061-Nano Al2O3 Composites by Ultrasonic Assisted Stir Casting followed by Heat Treatment and Hot Forging
Autorzy:
Purohit, Rajesh
Qureshi, M.M.U.
Kumar, Ashish
Mishra, Abhishek
Rana, R.S.
Tematy:
Al6061 alloy
Al6061-Al2O3 nanocomposites
XRD analysis
FESEM
mechanical properties
automotive gears
Pokaż więcej
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Powiązania:
https://bibliotekanauki.pl/articles/28099519.pdf  Link otwiera się w nowym oknie
Opis:
The present work comprises the development of Al6061/nano Al2O3 composites with 0 to 4 weight percent in steps of 0.5 wt. % of nano alumina particles by using ultrasonic assisted stir casting. Casted samples were subjected to heat treatment and hot forging. Further forged and heat-treated gear blanks of nano Al2O3 (0 to 3.0 weight %) reinforced nanocomposites were machined to make spur gears for the wear test. The results have shown that nano Al2O3 reinforcement in the Al6061 matrix with heat treatment and forging improves the hardness and compressive strength up to 3.5 wt. %, after that, it starts decreasing because of the agglomeration of nano alumina particles. SEM results reveal grain refinement of the pure alloy after reinforcement. Removal of porosity and voids observed after forging operation. Wear resistance increasing with incorporation of Al2O3 nanoparticles in base alloy, reinforcement wt. %, precipitation hardening and hot forging also improves wear resistance and mechanical properties. These composites have widespread applications in gear, brake discs, crankshaft, clutch plates, pistons, and other components of automobiles and aircraft structures.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relative Analysis for Carbon Sequestration Potential of Prominent Private and Public Green Spaces in Bengaluru, India
Autorzy:
Gopinath, Rajesh
Mishra, Abeer
Pai, Aishwarya R.
Sanghvi, Jay Hitesh
Idicula, Jojy Josheph
Tematy:
climate change
global warming
carbon sequestration
environmental disasters
urban spaces
overpopulation
Bengaluru - Indie
zmiany klimatyczne
globalne ocieplenie
sekwestracja węgla
przestrzenie miejskie
przeludnienie
Pokaż więcej
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Powiązania:
https://bibliotekanauki.pl/articles/59123598.pdf  Link otwiera się w nowym oknie
Opis:
With the advent of Climate Change and Global Warming, highly populated urban spaces are becoming more prone to various Environmental disasters. While forest are good sinks of CO2, it is highly impossible to introduce them into urban-level planning. In this context, nurturing Urban Green Spaces within cities, can serve well to perform the regulatory functions just like forests do. However, it is also imperative that their inception, must also ensure effective carbon sequestration. The objective of current research includes determination of carbon sequestration value for various ‘tree’ species, which eventually would serve to identify species with potential to serve better in Strategic Climate Sustainable Township Guidelines. To accomplish this objective, firstly three observatories (Richard’s Park, BMSIT&M Green Campus, and Lalbagh Botanical Garden) having distinct floral diversity were selected. Further, physical data collection was undertaken at these observatories and employed for biomass computation viz. ‘Biostatistics-based Allometric’ equation. Statistical Validation of data was accomplished viz. Multiple Linear Regression Modelling and One-way ANOVA. The average value of carbon sequestered (in tonnes per species) was found to be 20.13, 0.727 and 0.292, at Lalbagh Botanical Garden, Richard’s Park, and BMSIT&M, respectively. Upon comprehensive evaluation, it was found that best three species offering high carbon sequestration potential are Eucalyptus grandis, Eucalyptus globus and Samanea saman. These species would hence be keystone species that could play a potential role in naturally lowering CO2 levels in intra-urban spaces. These species would serve well in empowering Green Spaces to behave as Urban Cool Islands, to combat Urban/Global Warming.
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fungal diversity notes 2017-2122 : taxonomic and phylogenetic contributions to freshwater fungi and other fungal taxa
Autorzy:
Bandini, Ditte
Usman, Muhammad
Xiao, Yuanpin
Porcu, Giuseppe
Abeywickrama, Pranami D.
Liu, Jian-Wei
Armand, Alireza
Danteswari, Chalasani
Subramani, Priyadarshini
Casula, Marco
Zhang, Huang
Chen, Li-Jia
Dai, Dong-Qin
Liang, Yu-Shan
Zhao, Hai-Jun
Miller, Steven L.
Dissanayake, Asha J.
Rinaldi, Andrea C.
Wu, Na
Kumar, Shambhu
Martín, María P.
Svantesson, Sten
Kumla, Jaturong
Abdollahzadeh, Jafar
Tennakoon, Danushka S.
Yang, Chun-Lin
Kiss, Levente
Piri Kakihai, Sodabeh
Condé, Thiago O.
Suwannarach, Nakarin
Leonardi, Marco
Cheng, Song-Qi
Kezo, Kezhocuyi
Yu, Fu-Qiang
Shivas, Roger G.
Wang, Fei-Hu
Kabdraisova, Aisulu
Ronikier, Anna
Henkel, Terry W.
Khalid, Abdul Nasir
Yang, Yan-Yan
Gafforov, Yusufjon
Gao, Ying
de Silva, Nimali I.
Mleczko, Piotr
Du, Tian-Ye
Oset, Magdalena
Hyde, Kevin D.
Wen, Ting-Chi
Karunarathna, Samantha C.
Zhang, Jing-Yi
Ren, Guang-Cong
Ma, Jian
Gomdola, Deecksha
Ossowska, Emilia Anna
Yang, Yunhui
Suduri, Leila
Mahadevakumar, Shivannegowda
Mua, Alberto
Mohammadi Hamidi, Leila
Manawasinghe, Ishara Sandeepani
Ronikier, Michał
Li, Yan-Xia
Ferreira, Renato Juciano
Abdel-Wahab, Mohamed A.
Hernandez-Monroy, Abril
Podile, Appa Rao
Liao, Chun-Fang
Aime, M. Catherine
Rossi, Walter
Hashemlou, Esmaeil
Javan-Nikkhah, Mohammad
Lu, Yong-Zhong
Ghosta, Youbert
Jeewon, Rajesh
Gasca-Pineda, Jaime
Senanayake, Indunil Chinthani
Maharachchikumbura, Sajeewa S. N.
Rutkowski, Ryszard
Baseia, Iuri Goulart
Lumyong, Saisamorn
Bundhun, Digvijayini
Liu, Feng
Tian, Xing-Guo
Senwanna, Chanokned
Vaghefi, Niloofar
Gui, Heng
Sun, Ya-Ru
Wei, De-Ping
Chellapan, Naveenkumar
Bashiri, Samaneh
Xu, Rong-Ju
Karpowicz, Filip
Piepenbring, Meike
Chandranayaka, Siddaiah
Kunca, Vladimir
Kukwa, Martin
Han, Li-Su
Shu, Yong-Xin
Chen, Yanpeng
Chaiwan, Napalai
Acharya, Krishnendu
He, Shu-Cheng
Arumugam, Elangovan
de Farias, Antonio Roberto Gomes
Jayawardena, Ruvishika S.
Tan, Yu Pei
Pereira, Olinto L.
Zhao, Qi
Rajwar, Soumyadeep
Leão, Ana F.
Tarafder, Entaj
Velez, Patricia
Murugadoss, Ramesh
Tibpromma, Saowaluck
Sarma, Pullabhotla V. S. R. N.
Sanna, Massimo
Ahmadpour, Abdollah
Kaygusuz, Oğuzhan
Custódio, Fábio A.
Doilom, Mingkwan
Calabon, Mark S.
Singh, Raghvendra
Afshari, Naghmeh
Kosecka, Magdalena
Luo, Zong-Long
Shen, Hong-Wei
Glejdura, Stanislav
Kaliyaperumal, Malarvizhi
Dong, Wei
Vasan, Vigneshwari
Guzow-Krzemińska, Beata
Yang, Yu
Li, Hua
Amirashayeri, Pezhman
Chen, Liu-Huan
Monkai, Jutamart
Tang, Xia
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Health effects of overweight and obesity in 195 countries over 25 years
Autorzy:
Moradi-Lakeh, Maziar
Wesana, Joshua
Biadgilign, Sibhatu
Afshin, Ashkan
Naghavi, Mohsen
Noubiap, Jean J.
Salomon, Joshua A.
Kosen, Soewarta
Vlassov, Vasiliy V.
Tonelli, Marcello
Zenebe, Zerihun M.
Carrero, Juan J.
Reitsma, Marissa B.
Boneya, Dube J.
Weiderpass, Elisabete
Vaezghasemi, Masoud
Amberbir, Alemayehu
Owolabi, Mayowa O
Cornaby, Leslie
Hay, Simon I.
Shiue, Ivy
Shamsizadeh, Moretza
Bjertness, Espen
Mirrakhimov, Erkin M.
Vos, Theo
Barac, Aleksandra
Kinfu, Yohannes
Ku, Tiffany
Westerman, Ronny
Tyrovolas, Stefanos
Tadese, Fentaw
Kesavachandran, Chandrasekharan N.
Tedla, Bemnet A.
Liang, Xiaofeng
Mengistu, Desalegn T.
Liu, Patrick
Hafezi-Nejad, Nima
Khader, Yousef S.
Murray, Christopher J. L.
Vollset, Stein E.
Yano, Yuichiro
Thakur, J. S.
Amini, Erfan
Beyene, Addisu S.
Schutte, Aletta E.
Werdecker, Andrea
Mokdad, Ali
Cecilio, Pedro
Yonemoto, Naohiro
Lopez, Alan D.
Ahmed, Muktar B.
Obermeyer, Carla M.
Shiri, Rahman
Ogbo, Felix A.
Rai, Rajesh K.
Topór-Mądry, Roman
Kumar, G Anil
Ärnlöv, Johan
Feigin, Valery L.
Forouzanfar, Mohammad H.
Baye, Estifanos
Santos, Itamar S.
Tabarés-Seisdedos, Rafael
Kim, Daniel
Gona, Philimon N.
Larson, Heidi J.
Lozano, Rafael
McAlinden, Colm
Ukwaja, Kingsley N.
Mensink, Gert B. M.
Dharmaratne, Samath D.
Yonga, Gerald
McGarvey, Stephen T.
Sawhney, Monika
Silverberg, Jonathan I.
Amrock, Stephen M.
Mensah, George A.
Tegegne, Balewgizie S.
Gebrehiwot, Tsegaye T.
Schmidt, Maria I.
Ciobanu, Liliana G.
Fürst, Thomas
Rafay, Anwar
Abbafati, Cristiana
Sur, Patrick
Esteghamati, Alireza
Kasaeian, Amir
Anjana, Ranjit M.
Marczak, Laurie
Eshrati, Babak
Goto, Atsushi
Mueller, Ulrich O.
Ranabhat, Chhabi L.
Schmidhuber, Josef
Katikireddi, Srinivasa V.
Swaminathan, Soumya
Silva, Diego A. S.
Duncan, Bruce B.
Alkerwi, Ala’a
Banerjee, Amitava
Khang, Young-Ho
Salama, Joseph S.
Al-Aly, Ziyad
Biryukov, Stan
Malekzadeh, Reza
Sheikhbahaei, Sara
Safiri, Saeid
Singh, Jasvinder A
Terkawi, Abdullah S.
Fernandes, Joao
Uthman, Olalekan A.
Majeed, Azeem
Stranges, Saverio
Lee, Alex
Mazidi, Mohsen
Kim, Yun J.
Lim, Stephen S.
Zaidi, Zoubida
Campos-Nonato, Ismael
Kamal, Ritul
Amegah, Adeladza K.
Shin, Min-Jeong
Dandona, Lalit
Zipkin, Ben
Patton, George C.
Khubchandani, Jagdish
Pourmalek, Farshad
Sartorius, Benn
Dandona, Rakhi
Kengne, Andre P.
Roba, Hirbo S.
Horino, Masako
Gold, Audra
Islami, Farhad
Mezgebe, Haftay B.
Habtewold, Tesfa D.
Al-Raddadi, Rajaa
Damtew, Solomon A.
Bennett, Derrick A.
Qorbani, Mostafa
Sepanlou, Sadaf G.
Leinsalu, Mall
Hadush, Kokeb T.
Sanabria, Juan R.
Estep, Kara
Abate, Kalkidan Hassen
Amare, Azmeraw T.
Defo, Barthelemy Kuate
Asayesh, Hamid
Vasankari, Tommi
Cercy, Kelly
Malta, Deborah C.
Reinig, Nikolas
Opis:
BACKGROUND: Although the rising pandemic of obesity has received major attention in many countries, the effects of this attention on trends and the disease burden of obesity remain uncertain. METHODS: We analyzed data from 68.5 million persons to assess the trends in the prevalence of overweight and obesity among children and adults between 1980 and 2015. Using the Global Burden of Disease study data and methods, we also quantified the burden of disease related to high body-mass index (BMI), according to age, sex, cause, and BMI in 195 countries between 1990 and 2015. RESULTS: In 2015, a total of 107.7 million children and 603.7 million adults were obese. Since 1980, the prevalence of obesity has doubled in more than 70 countries and has continuously increased in most other countries. Although the prevalence of obesity among children has been lower than that among adults, the rate of increase in childhood obesity in many countries has been greater than the rate of increase in adult obesity. High BMI accounted for 4.0 million deaths globally, nearly 40% of which occurred in persons who were not obese. More than two thirds of deaths related to high BMI were due to cardiovascular disease. The disease burden related to high BMI has increased since 1990; however, the rate of this increase has been attenuated owing to decreases in underlying rates of death from cardiovascular disease. CONCLUSIONS: The rapid increase in the prevalence and disease burden of elevated BMI highlights the need for continued focus on surveillance of BMI and identification, implementation, and evaluation of evidence-based interventions to address this problem. (Funded by the Bill and Melinda Gates Foundation.).
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł

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