排序方式: 共有20条查询结果,搜索用时 313 毫秒
1.
Tahmasbi Meisam Razaghian Farhad Roshani Sobhan 《Analog Integrated Circuits and Signal Processing》2021,109(3):585-597
Analog Integrated Circuits and Signal Processing - In this paper, two bandpass–bandpass diplexers, based on L-, T- and rectangular-shaped resonators are designed and analyzed, which are used... 相似文献
2.
Investigation into the automatic drilling of cortical bones using ANFIS-PSO and sensitivity analysis
Neural Computing and Applications - During the bone drilling process, in case of excessive force can cause breakage, crack initiation and severe damage to bone tissue. Additionally, if drilling... 相似文献
3.
4.
Safari M. Hamidipour S. Elahi S. H. Tahmasbi V. 《Transactions of the Indian Institute of Metals》2020,73(4):831-841
Transactions of the Indian Institute of Metals - In this paper, creep age forming of aluminum 7075 tailor-machined blanks is experimentally studied. As there are two different thicknesses in a... 相似文献
5.
Hossein Rajabi Kuyakhi Ramin Tahmasbi Boldaji 《Petroleum Science and Technology》2013,31(24):2429-2434
AbstractThe density has an important role in the oil and gas industries calculation. In this study, an adaptive neuro-fuzzy interference system (ANFIS) model was employed to predict the density of n-alkane. The result obtained by the ANFIS model analyzed with the statistical parameters (i.e., MSE, RMSE, and R2) and graphical method. According to the result obtained the ANFIS has the highest accuracy with R2 = 0.999, MSE = 0.1438, and RMSE = 0.3792. 相似文献
6.
Armin Tahmasbi Rad Yue Bao Hyun-Sook Jang Yan Xia Hari Sharma Elena E. Dormidontova Jing Zhao Jaspreet Arora Vijay T. John Ben Zhong Tang Tiziano Dainese Ali Hariri Jesse V. Jokerst Flavio Maran Mu-Ping Nieh 《Advanced functional materials》2021,31(10):2009750
The authors designed a structurally stable nano-in-nano (NANO2) system highly capable of bioimaging via an aggregation-enhanced NIR excited emission and photoacoustic response achieved based on atomically precise gold nanoclusters protected by linear thiolated ligands [Au25(SCnH2n+1)18, n = 4–16] encapsulated in discoidal phospholipid bicelles through a one-pot synthesis. The detailed morphological characterization of NANO2 is conducted using cryogenic transmission electron microscopy, small/wide angle X-ray scattering with the support of molecular dynamics simulations, providing information on the location of Au nanoclusters in NANO2. The photoluminescence observed for NANO2 is 20–60 times more intense than that of the free Au nanoclusters, with both excitation and emission wavelengths in the near-infrared range, and the photoacoustic signal is more than tripled. The authors attribute this newly discovered aggregation-enhanced photoluminescence and photoacoustic signals to the restriction of intramolecular motion of the clusters’ ligands. With the advantages of biocompatibility and high cellular uptake, NANO2 is potentially applicable for both in vitro and in vivo imaging, as the authors demonstrate with NIR excited emission from in vitro A549 human lung and the KB human cervical cancer cells. 相似文献
7.
8.
Tracy A. Burnett Augusto M.L. Madureira Bruna F. Silper Audrey Nadalin Abdolmansour Tahmasbi Douglas M. Veira Ronaldo L.A. Cerri 《Journal of dairy science》2014
Cortisol has long been used as a marker of the stress response in animals. Cortisol can be analyzed from different media, most notably from the blood, saliva, and feces; however, the collection of cortisol from some of these media requires invasive procedures or excessive handling of the animals. Furthermore, it is not possible to capture long-term increases in circulating concentrations of cortisol from the blood, saliva, or feces. Hair cortisol has been found to be a reliable alternative for measuring chronic stress. With this emerging measure, appropriate sampling methodology must be developed and validated. The aim of this study was to determine the effects of hair color, sampling location, and processing method on cortisol concentrations in hair from lactating black and white Holstein cows (n = 18). Furthermore, we aimed to measure the hair growth rates at different body locations (n = 12) and test hair cortisol levels when resampled over short intervals (n = 37). Both black- and white-colored hair was collected from the shoulder, top line, hip, and tail switch of Holsteins; due to breed characteristics only white hair was harvested from the tail switch. All samples were cleaned with water and isopropanol, and then ground in a ball mill or finely cut with scissors once dry. Cortisol was extracted with methanol before being measured using a commercially available ELISA kit. Concentrations of cortisol were greater in white than in black hair (7.8 ± 1.1 vs. 3.8 ± 1.1 pg/mg). When only white samples were analyzed, hair from the tail switch had more cortisol than hair from the shoulder (11.0 ± 1.2 vs. 6.2 ± 1.2 pg/mg), whereas no difference was found when compared with the hip and top line. Samples ground with a ball mill had greater concentrations of cortisol extracted than those minced with scissors (10.4 ± 1.2 vs. 4.7 ± 1.2 pg/mg). The growth rate of hair was significantly greater at the tail switch compared with the hip and shoulder (0.51 ± 0.05 vs. 0.04 ± 0.05 vs. 0.03 ± 0.05 mm/d). When hair was collected every 3 wk after calving, a tendency was detected for multiparous cows to have greater concentrations of hair cortisol and significantly greater concentrations of cortisol on d 0 and 21 after calving compared with d 42, 84, and 126. In Holsteins, the hair on the tail switch is always white, grows more rapidly than other sites, and is sensitive enough to capture changes in cortisol over intervals as short as 3 wk, making it the ideal location for measuring hair cortisol. 相似文献
9.
ABSTRACTThis paper presents a current source inverter (CSI)-based hybrid power generation system, which uses wind turbine and photovoltaic cells (PVs). A permanent magnet synchronous generator (PMSG) is connected to the CSI using a diode rectifier and a buck converter that is used to control the speed of the rotor. Another buck converter is used to control the maximum power point tracking of PVs. The operation of proposed system is studied under normal and grid voltage dip conditions. According to new grid codes, most power generating units are supposed to remain connected to the grid during voltage sag conditions and inject reactive current to grid as defined by grid codes. The CSI has fault current limiting capability that makes it appropriate to use in grid-connected applications and during voltage sag conditions in particular. The proposed system tracks the maximum power point of wind turbine and PVs under normal mode and injects required reactive current to the grid during voltage drop. However, incorporation of CSI with the inherent behaviour of wind turbine and PVs causes fault current to be within the tolerable range for power electronic devices. Simulations are carried out by using PSCAD/EMTDC software to verify the proposed system. 相似文献
10.
In this paper, we study the maximum flow problem in stochastic networks with random arc failures. We present the concept of expected value of a given flow and seek a flow whose expected value is maximum. We also introduce the concept of expected capacity of a given cut. While the expected capacity of a cut can be computed in polynomial time, we show that it is NP-hard to compute the expected value of a flow. 相似文献