[The realization of tracking power-line interference adaptive coherent model base on part FFT].

Adaptive coherent model can be easily implemented and it can simultaneously reject the power-line interference and baseline wander. But the relevancy of the filter's bandwidth at low-frequency and power-line interference limits its application on ECG filtering. A part fast Fourier transform (FFT) algorithm is presented. It is used to track power-line frequency and adjust the sample frequency. Experiments show that the method still rejects interference efficiently despite of the slow fluctuation of power-line frequency

Robust Ensembling Network for Unsupervised Domain Adaptation

No description supplie

Robust Ensembling Network for Unsupervised Domain Adaptation

No description supplie

Detecting Trace Amounts of Narcotics in Serum by Delayed Luminescence.

This paper was designed to test the feasibility of optical identification of trace amounts of narcotics in serum using photoinduced delayed luminescence (DL). Comparative investigation of control serum and contaminated samples with methamphetamine and heroin was conducted. For the control serum without chemical contamination, the delayed photon emission decay shows an intrinsic lifetime of about 38.4 ms, whereas DL decay curves of the serum containing 1 105 mol/L of methamphetamine and 1 105 mol/L of heroin reveal shortened characteristic lifetimes of 19.3 and 24.6 ms, respectively. Experimental results demonstrate that the lifetime can be used as an indicator of containing narcotics in serum, promising a new method for detecting trace amounts of narcotics in serum

Controlled stress improves oocyte performance : cell preconditioning in assisted reproduction

A recently emerged concept utilizing a controlled environmental impact as a treatment for cells and tissues aims to improve neither the in vitro conditions nor the procedures, but the cell itself. Hydrostatic pressure stress emerged as the most controllable and most effective stressor, proving the principle that controlled stress improves cell performance in in vitro procedures, whereas further studies using different stressors (osmotic, oxidative or mechanic stresses) supported the principle. The present summary reviews studies of various stress treatments to treat oocytes of three species (murine, porcine, human) before vitrification, in vitro maturation, enucleation and somatic cell nuclear transfer. Eventually, cleavage and blastocyst rates and – in cases when hydrostatic pressure was used – blastocyst cell number and birth rates as well were significantly improved compared to untreated controls

Detecting Trace Amounts of Narcotics in Serum by Delayed Luminescence.

This paper was designed to test the feasibility of optical identification of trace amounts of narcotics in serum using photoinduced delayed luminescence (DL). Comparative investigation of control serum and contaminated samples with methamphetamine and heroin was conducted. For the control serum without chemical contamination, the delayed photon emission decay shows an intrinsic lifetime of about 38.4 ms, whereas DL decay curves of the serum containing 1 105 mol/L of methamphetamine and 1 105 mol/L of heroin reveal shortened characteristic lifetimes of 19.3 and 24.6 ms, respectively. Experimental results demonstrate that the lifetime can be used as an indicator of containing narcotics in serum, promising a new method for detecting trace amounts of narcotics in serum

Stress for stress tolerance? : a fundamentally new approach in mammalian embryology

In vitro culture, storage, and manipulation of gametes and embryos require meticulously adjusted conditions to avoid or minimize the harmful effects of uncontrolled stress. However, recent work indicates that a well-defined and properly applied stress may induce general adaptation and increase tolerance to various in vitro procedures. The aim of this review is to summarize reports on the effects of stress on gametes and embryos of several species. Treatment with sublethal doses of high hydrostatic pressure (HHP), or osmotic, heat, or oxidative stress resulted in increased morphological survival, fertilizing ability, or developmental potential after various in vitro or in vivo procedures. HHP treatment of spermatozoa, oocytes, embryos, and embryonic stem cells increased fertilizing ability, developmental competence, and differentiation and improved results after cryopreservation, parthenogenetic activation, intracytoplasmic sperm injection, and somatic cell nuclear transfer. Osmotic stress of oocytes resulted in higher developmental rates after cryopreservation, parthenogenetic activation, and somatic cell nuclear transfer. Heat shock was reported to increase developmental competence of parthenogenetically activated oocytes. Although cellular and subcellular mechanisms supposedly contributing to these processes require further research, the new principle, i.e., to improve the stress tolerance by a defined sublethal stress, may outline a completely new strategy in mammalian embryology, as well as cryopreservation of other cells and tissues with remarkable theoretical and practical consequences

Older adults make greater use of word predictability in Chinese reading

An influential account of normative aging effects on reading holds that older adults make greater use of contextual predictability to facilitate word identification. However, supporting evidence is scarce. Accordingly, we used measures of eye movements to experimentally investigate age differences in word predictability effects in Chinese reading, as this non-alphabetic language has characteristics that may promote such effects. Wordskipping rates were higher and reading times lower for more highly predictable words for both age groups. Effects of word predictability on word-skipping did not differ across the two adult age groups. However, word predictability effects in reading time measures sensitive to both lexical identification (i.e., gaze duration) and contextual integration (i.e., regression-path reading times) were larger for the older than younger adults. Our findings therefore reveal that older Chinese readers make greater use of a word’s predictability to facilitate both its lexical identification and integration with the prior sentence context

Battle of Polio eradication in the Western Pacific Region in the transition to COVID-19 endemicity

Battle of Polio eradication in the Western Pacific Region in the transition to COVID-19 endemicit