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In Latvia, according to Central Statistical Bureau data (2018), the agricultural industry employed 76.4 thou. employees in the main job as well as 49.4 thou. seasonal workers. For this reason, this industry plays an essential role in the national economy, and with the industry developing, labour-saving technologies are increasingly introduced to reduce manual work in agriculture. Besides, mineral fertilisers and plant protection products are intensively applied (organic farms are an exception) in order to increase...

According to State Forest service data in 2018 Norway spruce occupies 19% (0.533 milj. ha) from total forest area in Latvia. Disease and pest intense spread and damage in different forest ecosystems is result of climate change creating a risk to forest management. Spruce bus scale (Physokermes picea Shrnk.) in Baltics including in Latvia up to 2009 were detected only in parks growing trees but after 2009 also in different age P. abies stands especially on drained soils including Myrtillosa mel. Research aim is to ...

The use of bioenergy is gradually increasing, so are the number of different technologies to produce it. Particularly during the last years, new biogas plants had been built across Latvia to ensure more efficient use of farming and other agronomic waste or by-products. The aim of the research is to determine occupational risk factors at biogas plants in Latvia. The research summarises the risk factors of the biogas plant environment, compares the results of observations of biogas plants, performs a survey and an a...

The aim of the present paper is to give a brief review of results of computer simulating observations of the lunar rotation from the lunar surface. The simulation of physical libration of the Moon using the lunar telescope was performed on the basis of multiparametric analysis. High expectations in terms of obtaining accurate data on physical libration of the Moon are linked with SELENE Japanese project. The project implies an installation of the optical telescope at one of the Poles of the Moon. The observation o...

The present paper demonstrates capabilities of flicker-noise spectroscopy (FNS) as a phenomenological approach to the analysis of astrophysical objects? time signals using an example of the study of quasars radio-wave radiation dynamics in various frequency ranges (S band (2 GHz) and X band (8 GHz)). The promise of FNS application to the study of signals generated by accreting astrophysical objects is caused by inclusion of informational parameters characterizing the components of time sequences in various frequen...