EFEITOS DE DIFERENTES FONTES DE MATERIAL ORGÂNICO NA FERTILIDADE E UMIDADE DO SOLO

Soil is a resource of fundamental importance for agriculture, one of its functions being the balanced supply of nutrients to plants. One of the ways to make the soil sustainable is by applying organic matter, which can be of animal or vegetable origin. The objective was to evaluate the effect of adding different organic materials to the soil in relation to its fertility and moisture. Conducted an initial analysis to analyze soil fertility. Then the area was divided into plots and the treatments were applied, which consisted of 40 ton ha-1 cattle manure, 5 ton ha-1 poultry manure, 53 ton ha-1 swine manure, 30 ton ha-1 coffee straw and 0 ton ha-1 organic material (control). After 90 days, samples were taken from this soil to analyze its fertility and moisture. The treatments that best contributed to its fertility were swine and cattle manure and the treatment that retained more moisture was coffee straw.

The Initial Analysis of the Share Suitability for the Inclusion into an Active Trading Strategy

The article lists the problems inherent to the Russian stock market at the present stage, special attention is paid to the liquidity issues. The authors evaluate the shares of all issuers listed on the Moscow Stock Exchange for the possibility of their inclusion in an active strategy based on average trading volumes. The article calculates the effectiveness of using the methods of average values in assessing the compliance of the selected instruments with the minimum required liquidity values. In the course of the work, the industry features of the Russian market are taken into account. The classifier of the Moscow Exchange is used to distribute issuers by industry. In parallel, the liquidity imbalance between the branches of the Russian stock market is being investigated. The conclusion is given about the real number of stock market instruments suitable for use in active trading strategies. The result of the study is a formed set of shares distributed by industry.

'On My Own': the Exploitation of Street-involved Children on the Rapidly Changing Thai-Cambodian Border

The effects of regional and national conflicts often have pronounced impacts on the psychosocial and socioeconomic development of children, not only for those who directly experience conflict, but also for subsequent generations. The city of Poipet, which runs along the Thai-Cambodian border, has been in a unique position to observe these effects. From the refugee camps on the Thai side of the border in the 1980s, through the writing of Cambodia's constitution in the 1990s, to the long period of recovery in which the areas have become synonymous with unsafe migration, trafficking, and various forms of exploitation.<br/> The data shows that children who crossed the border for work demonstrated a heightened risk to physical and sexual violence. Gender was also found to be a considerable risk factor for street-involved children, with boys twice as likely as girls to disclose experiences of physical violence, and four times as likely to disclose experiences of sexual violence. Despite this, neither males nor females perceived sexual violence as a danger for males.<br/> This research draws on primary data collected from 80 street-involved Cambodian children living and/or working along the Thai-Cambodian border area of Poipet and Aranyaprathet and offers an initial analysis of their key experiences, perspectives, and vulnerabilities.

Evaluating the cohesion of municipalities’ discourse during the COVID-19 pandemic

Social media has been used as a method to alert and raise awareness among the population to help fight the COVID-19 pandemic. We argue that the discourse of municipalities and their respective mayors may have an influence on the behavior of the population and thus directly impact COVID-19 outcomes. This paper analyzes the diversity and cohesion of these discourses through posts published on Facebook, evaluating (i) diversity of topics discussed, (ii) topic evolution, and (iii) deviation from a central discourse. We also combine this information with epidemiological data to assess impact in the outcomes. In particular, we present two different Latent Dirichlet allocation (LDA) models to analyze how topics are being discussed by municipalities/mayors and compare how cohesion is related to the evolution of the pandemic. Our initial analysis suggests that municipalities tend to employ a unified discourse as a response to the worsening of epidemic outcomes. The results of our study could help to inform governments of better communication strategies in this and future health crisis.

The CORDEX-CORE EXP-I initiative: Description and highlight results from the initial analysis

We describe the first effort within the Coordinated Regional Climate Downscaling Experiment - Coordinated Output for Regional Evaluation, or CORDEX-CORE EXP-I. It consists of a set of 21st century projections with two regional climate models (RCMs) downscaling three global climate model (GCM) simulations from the CMIP5 program, for two greenhouse gas concentration pathways (RCP8.5 and RCP2.6), over 9 CORDEX domains at ~25 km grid spacing. Illustrative examples from the initial analysis of this ensemble are presented, covering a wide range of topics, such as added value of RCM nesting, extreme indices, tropical and extratropical storms, monsoons, ENSO, severe storm environments, emergence of change signals, energy production. They show that the CORDEX-CORE EXP-I ensemble can provide downscaled information of unprecedented comprehensiveness to increase understanding of processes relevant for regional climate change and impacts, and to assess the added value of RCMs. The CORDEX-CORE EXP-I dataset, which will be incrementally augmented with new simulations, is intended to be a public resource available to the scientific and end-user communities for application to process studies, impacts on different socioeconomic sectors and climate service activities. The future of the CORDEX-CORE initiative is also discussed.