Decomposition of individual components of bio-organic waste: volatile organic compounds and the impact on health and psycho-emotional state

The study considers the impact on the person’s health and psycho-emotional state of unpleasant odors arising from the storage and accumulation of bioorganic waste, including food waste (meat, poultry, fruits and vegetables) and bird droppings. The survey data of poultry and livestock farms’ employees in Serbia are given. The impact of unpleasant odors on the Waste sorting complex (Moscow region) employees’ vital signs is assessed. The impact of high-intensity odor groups for individual components of food waste (pork meat, poultry meat, vegetables and fruits) and bird droppings was studied by interviewing volunteers and measuring their vital signs

Разложение отдельных компонентов биоорганических отходов: летучие органические соединения и их влияние на здоровье и психоэмоциональное состояние

The study considers the impact on the person’s health and psycho-emotional state of unpleasant odors arising from the storage and accumulation of bioorganic waste, including food waste (meat, poultry, fruits and vegetables) and bird droppings. The survey data of poultry and livestock farms’ employees in Serbia are given. The impact of unpleasant odors on the Waste sorting complex (Moscow region) employees’ vital signs is assessed. The impact of high-intensity odor groups for individual components of food waste (pork meat, poultry meat, vegetables and fruits) and bird droppings was studied by interviewing volunteers and measuring their vital signs.Рассмотрено влияние на здоровье и психоэмоциональное состояние человека неприятных запахов, возникающих при хранении и накоплении биоорганических отходов, в том числе пищевых отходов (мяса, птицы, фруктов и овощей) и птичьего помета. Приведены данные опроса работников птицеводческих и животноводческих ферм Сербии. Оценено влияние неприятных запахов на показатели жизнедеятельности работников Комплекса по сортировке отходов (КПО) (Московская область). Влияние групп запахов высокой интенсивности на отдельные компоненты пищевых отходов (мяса свинины, мяса птицы, овощей и фруктов) и птичьего помета изучали путем опроса добровольцев и измерения их показателей жизнедеятельности

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

Водный баланс Рамсарского объекта в Эквадоре

Wetlands have been degrading and disappearing due to several anthropogenic impacts, such as pollution by discharge of domestic and industrial wastewater, agricultural runoff, land conversion, etc. The assessment and forecast of hydrological processes in wetlands, namely inflows and outflows, is essential for developing and implementing plans aimed at managing and protecting wetlands areas. We estimated the water budget of a Ramsar site, La Tembladera wetland, for a two-year period (2018-2019) by using the water balance method. The evapotranspiration was calculated using the Thornthwaite method and the runoff was estimated using the Curve Number method. The proposed water balance model showed that the major inflows to the wetland were the San Agustín and Bellavista canals, and Estero Pinto, about 92.9% (2018) and 90.5% (2019) of the total inflows. The runoff and wastewater flows represented the minor inflows. The runoff was 0.003% in 2018 and 0.004% in 2019, whereas the wastewater volume accounted for 0.05% of all inflows in both years. The actual evapotranspiration was the major outflow in both years, being 67.1% (2018) and 73.6% (2019) of the total outflows. On the other hand, the irrigation canal was the minor outflow, 32.9% in 2018 and 26.4% in 2019. Therefore, La Tembladera wetland hydrology is mostly linked to the canals system and climate conditions, precipitation and actual evapotranspiration. Our findings could be the basis for further research and developing plans in order to rationally manage and protect this wetland of international importance.Водно-болотные угодья подвергаются деградации и исчезновению в результате антропогенного воздействия, такого как загрязнение бытовыми и промышленными сточными водами, загрязнение сельскохозяйственными стоками, преобразование земель и т. д. Оценка и прогноз гидрологических процессов водно-болотных угодий, а именно притоков и оттоков, необходимы для разработки и внедрения проектов, направленных на управление и охрану водно-болотных угодий. Был проведен расчет водного баланса водно-болотного угодья La Tembladera за двухлетный период (2018 и 2019 гг.) с использованием метода водного баланса. Эвапотранспирация была оценена по методу Thornthwaite, а ливневые стоки по методике «Число кривых стока». Предложенная модель водного баланса показала, что основные притоки в водно-болотное угодье приходятся на каналы San Agustín и Bellavista, а также на Estero Pinto, около 92,9 % (2018 г.) и 90,5 % (2019 г.) от общего объема притоков. Наименьшими притоками являлись ливневой сток и сточные воды. Ливневые стоки составили 0,003 % в 2018 г. и 0,004 % в 2019 г. Объем сточных вод составил 0,05 % от всех притоков в оба года. Выявлено, что фактическая эвапотранспирация является основным оттоком, составляя 67,1 % (2018 г.) и 73,6 % (2019 г.) от общего объема оттоков. Вместе с тем наименьший отток принадлежит каналу для орошения, он составил 32,9 % в 2018 г. и 26,4 % в 2019 г. Таким образом, гидрология водно-болотного угодья La Tembladera в основном связана с системой каналов и климатическими условиями, осадками и фактической эвапотранспирацией. Полученные результаты могут стать основой для дальнейших исследований и разработки проектов по рациональному природопользованию и охране данного объекта международного значения

Observation of WWW Production in pp Collisions at √s = 13 TeV with the ATLAS Detector

This Letter reports the observation of W W W production and a measurement of its cross section using 139     fb − 1 of proton-proton collision data recorded at a center-of-mass energy of 13 TeV by the ATLAS detector at the Large Hadron Collider. Events with two same-sign leptons (electrons or muons) and at least two jets, as well as events with three charged leptons, are selected. A multivariate technique is then used to discriminate between signal and background events. Events from W W W production are observed with a significance of 8.0 standard deviations, where the expectation is 5.4 standard deviations. The inclusive W W W production cross section is measured to be 820 ± 100   ( stat ) ± 80   ( syst )     fb , approximately 2.6 standard deviations from the predicted cross section of 511 ± 18     fb calculated at next-to-leading-order QCD and leading-order electroweak accuracy

Search for direct top squark pair production in final states with two leptons in s=13\sqrt{s} = 13 TeV pppp collisions with the ATLAS detector

International audienceThe results of a search for direct pair production of top squarks in events with two opposite-charge leptons (electrons or muons) are reported, using $36.1~\hbox {fb}^{-1}$ of integrated luminosity from proton–proton collisions at $\sqrt{s}=13$ TeV collected by the ATLAS detector at the Large Hadron Collider. To cover a range of mass differences between the top squark $\tilde{t}$ and lighter supersymmetric particles, four possible decay modes of the top squark are targeted with dedicated selections: the decay $\tilde{t} \rightarrow b \tilde{\chi }_{1}^{\pm }$ into a b-quark and the lightest chargino with $\tilde{\chi }_{1}^{\pm } \rightarrow W \tilde{\chi }_{1}^{0}$ , the decay $\tilde{t} \rightarrow t \tilde{\chi }_{1}^{0}$ into an on-shell top quark and the lightest neutralino, the three-body decay $\tilde{t} \rightarrow b W \tilde{\chi }_{1}^{0}$ and the four-body decay $\tilde{t} \rightarrow b \ell \nu \tilde{\chi }_{1}^{0}$ . No significant excess of events is observed above the Standard Model background for any selection, and limits on top squarks are set as a function of the $\tilde{t}$ and $\tilde{\chi }_{1}^{0}$ masses. The results exclude at 95% confidence level $\tilde{t}$ masses up to about 720 GeV, extending the exclusion region of supersymmetric parameter space covered by previous searches