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Determination of calculation parameters for difference approximation of group refractive index of air based on two-point central method

BackgroundThe accurate knowledge of the refractive index of air is very important for environmental compensation in length measurements.MethodsIn this study, we apply difference approximation methods to facilitate the calculation of the group refractive index of air (GRA) over all calculable wavelengths. Our approach involves the determination of a suitable combination of the...

Design of robust high-order superdirectivity for circular arrays with sensor gain and phase errors

Though the high-order superdirectivity theory proposed in recent years is attractive, it is hard to implement in practice due to its poor robustness to small random array errors. Hence, in this paper, we present two robust designs of high-order superdirectivity for circular arrays with gain and phase errors. Firstly, we study on the sensitivity function of the high-order...

Power management in adjacent cognitive femtocells with distance-dependent interference in full coverage area

Xin Ao 0 Ping Yang 0 Ming Li 0 0 Department of Electronic Engineering, Dongguan University of Technology , Daxue Road, Dongguan , China In cognitive heterogeneous networks, when multiple adjacent

Effects of Scleroderma sichuanensis Xiao (Hymenoptera: Bethylidae) venom and parasitism on nutritional content regulation in host Tenebrio molitor L. (Coleoptera: Tenebrionidae)

To explore the mechanisms by which the wasp Scleroderma sichuanensis Xiao regulates the physiology and biochemistry of its host, effects of S. sichuanensis venom and parasitism on host the Tenebrio molitor L. pupae were examined. Significant differences in nutritional content were noted between parasitized and non-parasitized pupae and between venom- and phosphate buffered saline...

A simple and convenient method for the preparation of antioxidant peptides from walnut (Juglans regia L.) protein hydrolysates

Background Walnut (Juglans regia L.), that belongs to the Juglandaceae family, is one of the nuts commonly found in Chinese diets. Researchers had obtained peptides from walnut protein hydrolysates, and these peptides exhibited the high antioxidant activities. The objective of this study was to develop a simple and convenient method for a facile and reproducible preparation of...

Au as an efficient promoter for electrocatalytic oxidation of formic acid and carbon monoxide: a comparison between Pt-on-Au and PtAu alloy catalysts

Qiang Zhang Ruirui Yue Fengxing Jiang Huiwen Wang Chunyang Zhai Ping Yang Yukou Du 0 ) College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, People's

Simultaneous determination of uric acid and dopamine using a carbon fiber electrode modified by layer-by-layer assembly of graphene and gold nanoparticles

Jiao Du Ruirui Yue Fangfang Ren Zhangquan Yao Fengxing Jiang Ping Yang Yukou Du 0 ) College of Chemistry, Chemical Engineering and Materials Science, Soochow University , Suzhou 215123, People's

Tobacco smoking as a risk factor of bronchioloalveolar carcinoma of the lung: pooled analysis of seven case–control studies in the International Lung Cancer Consortium (ILCCO)

BackgroundThe International Lung Cancer Consortium (ILCCO) was established in 2004, based on the collaboration of research groups leading large molecular epidemiology studies of lung cancer that are ongoing or have been recently completed. This framework offered the opportunity to investigate the role of tobacco smoking in the development of bronchioloalveolar carcinoma (BAC), a...