Residue analysis of picoxystrobin in oriental melon using gas chromatography coupled with electron capture detection and mass spectrometric confirmation: application to dissipation kinetics and risk assessment

Food Science and Biotechnology - This study was carried out to determine the residual amounts of picoxystrobin in oriental melon (Cucumis melo L.) grown under plastic house conditions at two...     

Decline pattern and risk assessment of cyenopyrafen in different varieties of Asian pear using liquid chromatography and tandem mass spectrometry

Food Science and Biotechnology - The dissipation pattern of a commercial cyenopyrafen formulation sprayed at the recommended dose on Asian pears (two different species) grown at two different sites...     

Development and metabolic profiling of a postbiotic complex exhibiting antibacterial activity against skin microorganisms and anti-inflammatory effect on human keratinocytes

Food Science and Biotechnology - Beyond probiotics, the interest in the application of postbiotics to various fields has been growing. We aimed to develop a novel postbiotic complex (PC) with...     

Physicochemical characteristics and production of whole soymilk from Monascus fermented soybeans

Monascus fermented soybeans (MFS) were prepared by solid state fermentation. MFS showed higher solubility than the unfermented control within the acidic pH region but showed the opposite trend at pH 7 and 9. Although the emulsifying activity index of MFS was lower than that of the control, MFS had significantly higher emulsion stability at pH 7 and 9. Significant protein hydrolysis took place during fermentation, and the proportion of peak area less than 1.35 kDa was greatly increased in MFS. Whole soymilk prepared from MFS contained monacolin K (475 μg/g), and was enriched in isoflavone aglycones. Neither homogenisation nor pasteurisation caused significant changes in the isoflavone and monacolin K contents of the Monascus fermented soymilk. Total phenol content and ABTS radical scavenging activity were significantly higher in the Monascus fermented soymilk than in the control soymilk.     

Error analysis of a parallel mechanism considering link stiffness and joint clearances

In order to utilize a parallel mechanism as a machine tool component, it is important to estimate the errors of its end-effector due to the uncertainties in parts. This study proposes an error analysis for a new parallel device, a cubic parallel mechanism. For the parallel device, we consider two kinds of errors. One is a static error due to link stiffness and the other is a dynamic error due to clearances in the parts. In this study, we propose a stiffness model for the cubic parallel mechanism under the assumption that the link stiffness is a linear function of the link length. Also, from the fact that the errors of u-joints and spherical joints are changed with the direction of force acting on the link, they are regarded as a part of link errors, and then the error model is derived using forward kinematics. Lastly, both the error models are integrated into the total error, which is analyzed with a test example that the platform moves along a circular path. This analysis can be used in predicting the accuracy of other parallel devices.     

A 12-bit 10-MS/s SAR ADC with a weighted sampling time technique applied to C-DAC

This paper presents a low power 12-bit 10-MS/s successive approximation register (SAR) analog-to-digital convert (ADC) for bio-signal signal processing in wearable sensor systems. A weighted sampling time technique applied to a capacitor digital to analog converter (C-DAC) is employed to reduce the power consumption of the conventional SAR ADC with minimum performance sacrifice. The proposed technique helped reduce its energy consumed by MSB, MSB-1, MSB-6, and MSB-7 capacitors by more than 40% compared with that of the conventional C-DAC. Another technique, a voltage scaling method is also employed to lower the power supply voltage from 1.2 to 0.6 V for all the digital logics except the output registers, such that it results in a power reduction of 70%. The proposed ADC is implemented with the standard CMOS 65 nm 1-poly 6-metal n-well process. The ADC achieves DNL/INL of?±?1.2LSB/?±?1.5LSB, ENOB of 10.3-b, power consumption of 31.2 μW, and Walden FoM of 2.7fJ/step.

     

The Impact of LTE UE on Audio Devices

In this letter, the acoustic noise due to long term evolution (LTE) user equipment (UE) is investigated with various transmitting powers of the LTE UE by using the Monte Carlo method in a practical acoustic noise experiment.     

An optical surveillance technique based on cavity mode analysis of SL-RSOA for GPON

An optical in-service surveillance technique based on cavity mode analysis of self-injection locked reflective semiconductor optical amplifier (SL-RSOA) for gigabit-capable passive optical network (GPON) is proposed. At each optical network unit (ONU), an upstream transmitter utilizing SL-RSOA can generate both upstream data signal and surveillance signal due to presence of external cavity. We can able to detect both upstream data and surveillance signals from all ONUs simultaneously at the optical line terminal (OLT) by assigning a distinct cavity mode frequency to each upstream transmitter. We also estimate the power penalty induced by the surveillance signals on the upstream data channel during simultaneous detection mechanism. Further, we propose an alternative method to detect the surveillance signals by allocating a separate monitoring time slot in upstream GPON transmission convergence (GTC) frame so as to reduce the influence of surveillance signals on the upstream data channel.     

An asymptotic solution of EM backscattering from a conducting sphere coated with a composite material

An asymptotic high frequency solution for the electromagnetic (EM) backscattered field produced by a plane wave incident on a perfectly conducting sphere coated with a thin composite material is derived in this paper. For the formulation of the incident and the reflected field the characteristics of the wave transformation and the line integral via the stationary phase method were applied, respectively, and the obtained results are cast in the ordinary ray formats of a geometrical optics field. Based on the Watson transform technique, the diffracted field is also formulated from the residue series solution of the problem and presented in a form suitable for the numerical calculation. The numerical results obtained from the derived asymptotic solution show excellent agreement with those from the rigorous eigenfunction solution.