We outline a new multiple trace theory of temporal preparation (MTP), which accounts for behavior in reaction time (RT) tasks in which the participant is presented with a warning stimulus (S1) followed by a target stimulus (S2) that requires a speeded response. The theory assumes that during the foreperiod (FP; the S1-S2 interval) inhibition is applied to prevent premature response, while a wav...

Duas novas flavanonas naturais, 5-hidroxi-6,7-(2”,2”-dimetilcromeno)flavanone (1) e 5-metoxi3-hidroxi-6,7-(2”,2”-dimetilcromeno)flavanone (2), foram isoladas dos extratos das raízes de L. yucatanensis e L. xuul, respectivamente. Adicionalmente, quatro novos metabólitos, os flavanóides glicosídicos quercetina-3-ramnoglucosídeo e caempferol-3-ramnoglucosídeo, juntamente com 4hidroxi-N-metil-proli...

conclusions our findings indicate that umbelliprenin exhibits concentration-dependent inhibitory effects on various cell types; it is potentially toxic against the ht29, ct26, mcf-7, 4t1, a172, and gl26 cell lines, potentially harmful against bmdscs, and non-toxic against pbmcs. therefore, if our results are approved in the future, umbelliprenin can be an appropriate candidate for developing tr...

During the last years, biochar (BC) from various organic wastes and its application to soil improve properties have been a very common treatment in agricultural soils. While many studies conducted on effects of improvement alkaline soils, acid soils are limited. An incubation experiment was investigate poultry litter (PLBC) acidic C mineralization. Biochar derived through slow pyrolysis mixed w...

Abstract A variety of organic feedstocks can be used for anaerobic digestion, resulting in digestates with different compositions, affecting the fertiliser value. Therefore, two experiments were conducted to assess (1) differences nitrogen (N) value seven from a 2-year field experiment spring wheat, and (2) degradability matter (OM) within an aerobic incubation experiment. In field, mineral equ...

Aflatoxin B1 (AFB1) is a highly toxic substance produced mainly by Aspergillus spp., which are known to contaminate wide variety of foods and feeds. The objective this study was understand the growth AFB1 production rate flavus NRRL 3357 investigate impact different infrared (IR) heat intensities on aflatoxin-producing potential A. flavus. Thirty healthy corn kernels were inoculated with 1 × 10...

Exposure to oxygen and aerobic biological activity during drought periods alters the availability of terminal electron acceptors (TEA) in peat catotelm layer. We investigated changes electrochemical chemical characteristics humic acids (HA) induced by subjecting air-dried sphagnum oxidation or reduction a 90-day incubation experiment. Structural modifications HAs from anaerobically (HAred) aero...

Biochar as a soil amendment has been proposed for enhancing carbon sequestration and manure-borne hormone contaminant remediation. However, little is known about the ecological risk of biochar application in with contamination. This study investigated influence three manure-impacted soils contaminated estrogen hormones, natural 17β-estradiol synthesized 17α-ethinylestradiol microcosm experiment...

To explore whether or not the gossypol varied in cottonseed by-products affect rumen degradability and fermentation efficiency, an vitro cumulative gas production experiment was applied with mixed microorganism to compare characteristics of whole (WCS, n = 3 samples), meal (CSM, hull (CSH, 2 samples). The five-replicate per sample incubation time continuously lasted for 0.5, 1.5, 3, 6, 12, 24, ...

In order to discuss the problems of transformation soil nitrogen and leaching in saline farmland, this study carried out a split-plot experiment with returning straw various application rates. The main treatment was corn straw, at quantities 0.64 g (C1) 0 (C0), secondary fertilizer (urea) (N0), 0.015 (N1) 0.03 (N2). results showed that, firstly, extension incubation time, nitrification rate eac...