Research on lignin biodegradation has become of great interest, due to the fact that lignin is one of the most abundant renewable materials, next to cellulose.Lignin is also the substance that gives color to raw flax fibers.In order to bleach the flax and to keep its tenacity high enough for textile applications, it is necessary to remove the ligni
Charles Darwin posited that secondary sexual characteristics result from competition to attract mates.In male songbirds, specialized vocalizations represent secondary sexual characteristics of particular importance because females prefer songs at specific frequencies, amplitudes, and duration.For birds living in human-dominated landscapes, historic
With the increase of the penetration rate of renewable energy power generation in the power system, the power grid gradually tends to be weak.Under the scenario of nonlinear load connecting to weak power grid, the grid-side voltage will produce unbalance, distortion and frequency deviation due to the influence of large internal impedance, insuffici
Expert systems are used for evaluating the actual state and future behavior of insulating 3m speedglas 9002nc systems of high voltage electrical machines and equipment.Several rule-based expert systems have been developed in cooperation with top diagnostic workplaces in the Czech Republic for this purpose.The IZOLEX expert system evaluates diagnost
Background: Ectopic pregnancy remains the most common cause of early pregnancy mortality, with management options differing according to clinical presentation and investigations.This audit aims to investigate the indications for medical and surgical management of ectopic pregnancy at a tertiary hospital network, in order to assess variances in prac