A radial distribution of moistures and tangential strains within a larch log cross section during radio-frequency/vacuum drying

2004 ◽  
Vol 62 (1) ◽  
pp. 59-63 ◽  
Author(s):  
W. Kang ◽  
N.-H. Lee ◽  
J.-H. Choi
Keyword(s):  
Radio Frequency ◽  
Cross Section ◽  
Radial Distribution ◽  
Vacuum Drying

scholarly journals Characteristics of Timbers Dried Using Kiln Drying and Radio Frequency-Vacuum Drying Systems

2017 ◽  
Vol 108 ◽  
pp. 10001 ◽  
Author(s):  
Zairul Amin Rabidin ◽  
Gan Kee Seng ◽  
Mohd Jamil Abdul Wahab
Keyword(s):  
Radio Frequency ◽  
Vacuum Drying ◽  
Kiln Drying

Influence of Substrate on Structure and Magnetic Properties of Bi0.9Nd0.1FeO3 Thin Films by Radio Frequency Magnetron Sputtering Method

2013 ◽  
Vol 302 ◽  
pp. 146-150
Author(s):  
L.L. Li ◽  
Qiu Xiang Liu ◽  
Yan Zou ◽  
Xin Gui Tang ◽  
Yan Ping Jiang
Keyword(s):  
Magnetic Properties ◽  
Magnetron Sputtering ◽  
Radio Frequency ◽  
Cross Section ◽  
Rf Magnetron Sputtering ◽  
Radio Frequency Magnetron Sputtering ◽  
X Ray Diffraction ◽  
X Ray ◽  
Structure Morphology ◽  
Influence Of Substrate

Bi0.9Nd0.1FeO3 (BNFO) films were deposited on Si (100) and (La,Sr)(Al,Ta)O3 (100) (LAST) substrate by radio frequency (RF) magnetron sputtering method respectively. The structure，morphology and magnetic properties were studied. X-ray diffraction (XRD) result indicates that the BNFO films on different substrate adopted different orientation. Cross-section scanning electron microscopy shows that the film thickness is 145 nm．Magnetic properties measurement shows that the film on Si(100) substrate has the larger saturation magnetization (Ms) of 3 686 emu/cm3, while the Ms value of the BNFO films on LSAT(100) substrate is only 1 213 emu/cm3.

scholarly journals Inductance Formula for Square Spiral Inductors with Rectangular Conductor Cross Section

2019 ◽  
Vol 8 (4) ◽  
pp. 80-88
Author(s):  
H. A. Aebischer
Keyword(s):  
Integrated Circuits ◽  
Comparative Study ◽  
Radio Frequency ◽  
Cross Section ◽  
Radio Frequency Identification ◽  
Maximum Error ◽  
Maximum Relative Error ◽  
Spiral Inductors ◽  
Spiral Coils ◽  
The Comparative Study

Planar spiral coils are used as inductors in radio frequency (RF) microelectronic integrated circuits (IC’s) and as antennas in both  radio frequency identification (RFID) and telemetry systems. They must be designed to a specified inductance. From the literature, approximate analytical formulae for the inductance of such coils with rectangular conductor cross section are known. They yield the direct current (DC) inductance, which is considered as a good approximation for inductors in RF IC’s up to the GHz range. In principle, these formulae can simplify coil design considerably. But a recent comparative study of the most cited formulae revealed that their maximum relative error is often much larger than claimed by the author, and too large to be useful in circuit design. This paper presents a more accurate formula for the DC inductance of square planar spiral coils than was known so far. It is applicable to any design of such coils with up to  windings. Owing to its scalability, this holds irrespectively of the coil size and the inductance range. It lowers the maximum error over the whole domain of definition from so far  down to . This has been tested by the same method used in the comparative study mentioned above, where the precise reference inductances were computed with the help of the free standard software FastHenry2. A comparison to measurements is included. Moreover, the source code of a MATLAB® function to implement the formula is given in the appendix.

scholarly journals Efficiently, accurately, intelligently dissecting bamboo: characteristic of vascular bundle in Phyllostachys

2021 ◽  
Author(s):  
Haocheng Xu ◽  
Ying Zhang ◽  
Jiajun Wang ◽  
Tuhua Zhong ◽  
Xinxin Ma ◽  
...  
Keyword(s):  
Cross Section ◽  
Radial Distribution ◽  
Vascular Bundle ◽  
Fiber Volume Fraction ◽  
Volume Fraction ◽  
Width Ratio ◽  
Vascular Bundles ◽  
Fiber Volume ◽  
Detection Model ◽  
Gradient Change

AbstractA comprehensive understanding of vascular bundles is the key to elucidate the excellent intrinsic mechanical properties of bamboo. This research aims to investigate the gradient distribution of fiber volume fraction and the gradient changes in the shape of vascular bundles along the radial axis in Phyllostachys. We constructed a universal transfer-learning-based vascular bundle detection model with high precision of up to 96.97%, which can help to acquire the characteristics of vascular bundles quickly and accurately. The total number of vascular bundles, total fiber sheath area, the length, width and area of fiber sheath of individual vascular bundles within the entire cross-section were counted, and the results showed that these parameters had a strongly positive linear correlation with the outer circumference and wall thickness of bamboo culms, but the fiber volume fraction (around 25.5 %) and the length-to-width ratio of the vascular bundles (around 1.226) were relatively constant. Furthermore, we layered the cross section of bamboo according to the wall thickness finely and counted the characteristics of vascular bundle in each layer. The results showed that the radial distribution of fiber volume fraction decreased exponentially, the radial distribution of the length-to-width ratio of vascular bundle decreased quadratically, the radial distribution of the width of vascular bundle increased linearly. The trends of the gradient change in vascular bundle’s characteristics were found highly consistent among 29 bamboo species in Phyllostachys.One sentence summaryA universal vascular bundle detection model can efficiently dissect vascular bundles in Phyllostachys, and the radial gradient change of vascular bundles in cross-section are found highly consistent.

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