Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Physical Sciences and Mathematics (7711)
- Life Sciences (5833)
- Medicine and Health Sciences (4678)
- Medical Sciences (3344)
- Computer Engineering (2852)
-
- Computer Sciences (2852)
- Electrical and Computer Engineering (2852)
- Engineering (2852)
- Animal Sciences (2532)
- Mathematics (1969)
- Chemistry (1528)
- Veterinary Medicine (1334)
- Agriculture (1249)
- Forest Sciences (1249)
- Zoology (1198)
- Botany (1048)
- Plant Sciences (1048)
- Biology (1004)
- Earth Sciences (763)
- Physics (599)
- Keyword
-
- Turkey (586)
- Taxonomy (199)
- COVID-19 (155)
- Oxidative stress (136)
- New species (125)
-
- New records (105)
- Apoptosis (96)
- Morphology (88)
- Inflammation (86)
- Children (85)
- Classification (85)
- Deep learning (85)
- Iran (85)
- Antioxidant (81)
- Machine learning (80)
- Breast cancer (79)
- New record (78)
- Phylogeny (75)
- Biodiversity (72)
- Rat (71)
- Optimization (68)
- Genetic diversity (66)
- Distribution (64)
- Mortality (64)
- Cytotoxicity (63)
- Fauna (60)
- Genetic algorithm (60)
- Cancer (58)
- Gene expression (58)
- SARS-CoV-2 (55)
- Publication Year
Articles 18091 - 18120 of 18793
Full-Text Articles in Entire DC Network
Facile Synthesis Of Hydantoin Derivatives Under Microwave Irradiation, Khalil Faghihi, Khosrow Zamani, Akbar Mobinikhaledi
Facile Synthesis Of Hydantoin Derivatives Under Microwave Irradiation, Khalil Faghihi, Khosrow Zamani, Akbar Mobinikhaledi
Turkish Journal of Chemistry
The rapid and highly efficient synthesis of hydantoin derivatives 3(a-f) was achieved under microwave irradiation by using a domestic microwave oven from the reactions of cyanohydrin derivatives 2(a-f) with ammonium carbonate. The reaction proceeded rapidly (2-5 min.), and as a result a series of hydantoin derivatives 3(a-f) were obtained in high yields. All of the synthesized compounds were fully characterized by their melting point, ^1H-NMR, FTIR spectroscopy and elemental analyses. Cyanohydrin derivatives 2(a-f) were also prepared from the ketone derivatives 1(a-f) with potassium cyanide in the presence of sodium metabisulfite in an additional reaction.
Physical Characteristics Of Polymer Magnetic Microspheres, Rasim A. Ali-Zade
Physical Characteristics Of Polymer Magnetic Microspheres, Rasim A. Ali-Zade
Turkish Journal of Physics
In this study the structure and the magnetic properties of polymer microspheres, filled with magnetite nanoparticles are investigated. Average particle size of magnetite nanoparticles before and after being introduced into polymer microspheres, and the distance between nanoparticles in the polymer microspheres, are measured. Magnetization curve of polymer magnetic microspheres (PMMS) is determined. The magnetic susceptibility of PMMS with various diameters, and the dependence of PMMS magnetic susceptibility on diameter are determined. Magnetization occurs due to the orientation of PMMS as a magnetic moment. The total magnetic moment of PMMS is the sum of magnetic moments of PMMS sections which consist …
Computer Technology For The Future Of Sw Asiatic Botany, R. J. Pankhurst
Computer Technology For The Future Of Sw Asiatic Botany, R. J. Pankhurst
Turkish Journal of Botany
Much computer software already exists for floristic and monographic studies. Database software can hold all the data required for a Flora, and can process it much more accurately. The fundamental data tables are those for names, authorities, people, specimens, bibliography, geography and distribution. To these can be added other data such as descriptions, keys, images, maps, chromosomes and vernacular names. The same data system can be used for collection management and making herbarium labels. It is very important to use data standards such as for books, journals and authorities. Computerised descriptions and keys can also be constructed and held in …
Cover And Contents
Turkish Journal of Veterinary & Animal Sciences
No abstract provided.
Cover And Contents
Turkish Journal of Electrical Engineering and Computer Sciences
No abstract provided.
A Robustness Analysis Of Game-Theoretic Cdma Power Control, Xingzhe Fan, Murat Arcak, John T. Wen
A Robustness Analysis Of Game-Theoretic Cdma Power Control, Xingzhe Fan, Murat Arcak, John T. Wen
Turkish Journal of Electrical Engineering and Computer Sciences
This paper studies robustness of a gradient-type CDMA uplink power control algorithm with respect to disturbances and time-delays. This problem is of practical importance because unmodeled secondary interference effects from neighboring cells play the role of disturbances, and propagation delays are ubiquitous in wireless data networks. We first show L_p-stability, for p \in [1,\infity], with respect to additive disturbances. We pursue L_{\infity}-stability within the input-to-state stability (ISS) framework of Sontag [7], which makes explicit the vanishing effect of the initial conditions. Next, using the ISS property and a loop transformation, we prove that global asymptotic stability is preserved for sufficiently …
Global Stability Analysis Of An End-To-End Congestion Control Scheme For General Topology Networks With Delay, Tansu Alpcan, Tamer Başar
Global Stability Analysis Of An End-To-End Congestion Control Scheme For General Topology Networks With Delay, Tansu Alpcan, Tamer Başar
Turkish Journal of Electrical Engineering and Computer Sciences
We analyze the stability properties of an end-to-end congestion control scheme under fixed heterogeneous delays, and for general network topologies. The scheme analyzed is based on the congestion control game of [1], with the starting point being the unique Nash equilibrium of that game. We prove global stability of this solution (and hence of the congestion control algorithm) under a mild symmetricity condition. We further demonstrate the stability of the algorithm numerically for various delays, user numbers, and topologies
Flow Controller Design And Performance Analysis For Self-Similar Network Traffic, Peng Yan
Flow Controller Design And Performance Analysis For Self-Similar Network Traffic, Peng Yan
Turkish Journal of Electrical Engineering and Computer Sciences
Recent studies of high-resolution traffic measurement discovered the self-similarity in both LAN and WAN traffic. In this paper, we introduce a two-degree of freedom rate based flow controller, which includes a robust H^{\infity} control block and an LMMSE based capacity predictor. The former part can guarantee the robust stability against time-varying time delay uncertainties and the latter improves the transient response by predicting the self-similar cross-traffic. Implementation issues are discussed and performance analysis is provided to validate our design. We also investigate the prediction and control in larger time scale which is more applicable for the real network environment
Cover And Contents
Turkish Journal of Electrical Engineering and Computer Sciences
No abstract provided.