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Determine the frequency
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This paper investigates the nonlinear vibration of saturated porous functionally graded plate subjected to the combination of mechanical and thermal loadings. Three different distributions of porosity are considered. Based on the Biot and higher order shear deformation theories, the vibration characteristics including natural frequency, deflection amplitude – time curves and relation between frequency ratio and amplitude of the saturated porous plate are determined.
13p
viambani
18-06-2024
1
1
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Part 2 book "Electrical circuit analysis and design" includes content: The transformer, transient solution of electrical circuits, complex frequency, the s plane and bode diagrams, resonance, harmonics and fourier analysis, computer solution of electric circuits, complex numbers, matrices, determinants and partial fractions.
208p
dianmotminh03
11-06-2024
3
2
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This paper presents a simulation method to determine the local sensitivity of geometrical parameters of the micro-beam models used in the micro-mechanical structures. The analysis allows for defining the essential parameters in designing the microstructures to reduce the designing time. The analysis results can be used to give suitable geometrical parameters for the micro-mechanical structure according to the purposed resonant frequency.
8p
dathienlang1012
03-05-2024
1
0
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To determine the genotype frequency of the STAT6 rs324015 polymorphism and its association with cancer risk in hepatitis B virus (HBV) - related hepatocellular carcinoma (HCC) patients.
10p
vijaychest
16-05-2024
4
1
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A new semi-empirical technic has been established relying on the linkage between the chemistry in the bulk liquid and that taking place in the acoustic cavitation bubble. The open-source COPASI software has been used for the optimization of number density according to the total yield of a single bubble and the fitting of the experimental yield of hydrogen peroxide in the sonicated solution. It was observed that the number density is increased with the rise of ultrasound frequency from 200 to 1140 kHz, independently of the saturating gas nature (O2, Ar or air).
10p
dianmotminh02
03-05-2024
2
2
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The purpose of this study is to determine whether or not teachers’ lifelong learning tendencies vary by gender, professional field, educational level of service, professional seniority, and frequency of reading a book, magazine, and newspaper. The study employs a descriptive research model.
13p
viarnault
25-04-2024
1
1
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Young pupils engage with technology daily, however, the use that preschool teachers make of technologies and their level of digital expertise are largely unknown. The objective of this study was to determine how these teachers make use of ICT (Information and Communication Technologies) and the frequency with which they use them, as well as to explore the sociodemographic and professional factors related to the different uses. 477 preschool teachers from Spain took part in a survey.
12p
viarnault
25-04-2024
1
1
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The Freedom Torsional Vibrations (FTV) Calculation (FTVC) for the marine main propulsion plant (MPP) to determine the freedom frequencies and the FTV formations of the mechanical system. The research verifies to the MMP on the Korean ship XXX-XXX-XXX, using the MDE 6G70MEC.
5p
vijaychest
24-04-2024
6
3
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An algorithm called the Vaz algorithm is explained in this study that uses the order frequency variable in inventory categorization, so that supply chain managers will be able to keep low inventory of such items and apply small batch and/or a fast response manufacturing strategy to reduce slow moving inventory within fast moving consumer goods (FMCG) businesses.
8p
longtimenosee06
27-03-2024
4
2
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The results show that the O atom, as compared to the S, Se, and Te ones acting as proton acceptors, plays a peculiar role in the C-H blue shift of stretching frequencies involving hydrogen bonds. It is found that the magnitude of red- or blue-shift of the C-H stretching frequency in the hydrogen bond is mainly determined by the C-H polarity (DPE) and gas phase basicity (PA) of the proton acceptor in the isolated isomer, besides relevant weak interactions and the geometrical structure of the formed complex.
17p
vibego
02-02-2024
0
0
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The optimal surveillance period and frequency after curative resection for oesophageal squamous cell carcinoma (OSCC) remain unclear, and current guidelines are mainly based on traditional Kaplan–Meier analyses of cumulative incidence rather than risk analysis. The aim of this study was to determine a suitable follow-up surveillance program following oesophagectomy for OSCC using the hazard function.
9p
vileonardodavinci
23-12-2023
3
3
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Tamoxifen is one of the fundamental pillars of adjuvant endocrine therapy for hormone receptor-positive breast cancer; however, 30–50% of patients receiving tamoxifen experience tumor relapse. This study aimed at determining the frequencies of the most clinically relevant CYP2D6 alleles and evaluating their impact on the respon‑siveness to tamoxifen in a cohort of Syrian breast cancer patients.
11p
vialfrednobel
23-12-2023
6
3
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To determine the frequency of H1047R mutation on exon 20 PIK3CA gene in the plasma of hormone recepter positive (HR+) breast cancer (BC) women and its relationship with clinical characteristics of these patients. Subjects: Plasma was separated from venous blood of 141 female HR+ BC patients, have been treating at 108 Military Central Hospital from June 2021 to June 2023.
9p
vigeorge
06-12-2023
2
2
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"Standard Test Method for Alternating-Current Magnetic Properties of Materials at Power Frequencies Using Wattmeter-Ammeter-Voltmeter Method and 25-cm Epstein Test Frame" covers tests for the magnetic properties of basic flat-rolled magnetic materials at power frequencies (25 to 400 Hz) using a 25-cm Epstein test frame and the 25-cm double-lap-jointed core. It covers the determination of core loss, rms exciting power, rms and peak exciting current, and several types of ac permeability and related properties of flat-rolled magnetic materials under ac magnetization.
17p
hth_hn_vn
10-12-2023
9
4
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This test method covers the determination of the magnetic performance of fully processed cores for magnetic amplifier-type applications. Tests may be conducted at excitation frequencies of 60, 400, 1600 Hz, or higher frequencies.
17p
hth_hn_vn
10-12-2023
9
4
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These test methods cover the determination of specific core loss and peak permeability of single layers of sheet-type specimens tested with normal excitation at a frequency of 50 or 60 Hz.
16p
hth_hn_vn
10-12-2023
5
4
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Low human epidermal growth factor receptor 2 (HER2) expression is an emerging concept in breast cancer that is defined as immunohistochemistry (IHC) 1+or IHC 2+and negative in situ hybridization (ISH) but has been poorly investigated. The aim of our study was to determine the frequency of low HER2 expression among HER2- negative breast cancers and compare the clinicopathological features and prognosis of HER2-low patients with those of HER2-zero patients.
8p
vioracle
29-09-2023
2
2
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The article develops the rational fraction polynomial method using combined measurements in the frequency domain to identify the natural frequencies of structures. The effectiveness of the proposed method is validated by numerical simulations and experimental tests of steel beam.
10p
vifriedrich
30-08-2023
5
4
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This article presents an improved procedure for detecting single damage in beam-like structures. Many damage detection methods are based on the analysis of beam natural frequency shifts in damaged and intact states and its analytical modal curvatures. They identify the damage by constructing curves of damage coefficients along the beam and visually determining the point of their mutual intersection.
15p
viberkshire
09-08-2023
4
3
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ZnSe thin films were synthesized on glass substrates using the inert gas condensation technique at substrate temperature ranging from 25 C to 100 C. The hexagonal structure and average crystallite size (6.1e8.4 nm) were determined from X-ray diffraction data.
5p
viberbers
09-08-2023
2
2
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