Spectral composition of light and growing of plants in controlled environments

The main conclusions of many investigations about general requirements of plants for spectral composition of PAR (photosynthetically active radiation) are based on phylogenetic aspects of plant growth. We think that these aspects are not the main criteria in choosing the spectral composition required for growing plants in controlled conditions. Our approach to this problem is based on plant and crop reaction under long duration growth with specific spectra and intensity. Only in this way can we determine correctly the role of light characteristics for developing crops

Autonomous and Environmentally Comfortable Type of Housing for the Development of the Arctic

Factors that impede the development of the Arctic are: 1) long frosts; 2) low quality of indoor air; 3) an unsanitary surroundings due to low activity of biota; 4) deficiency of fresh vitamin-containing food; 5) high dependency of settlements on external supply. The concept of the Arctic Ecological- Energy Autonomous Dwelling (AEEAD) designed to solve the problems is grounded on: 1) the optimal configuration of housing and heat savings; 2) closure of the flows of substances; 3) the use of autonomous energy sources. To ensure energy savings and maintain a high quality of life air revitalization is required. Air revitalization is provided by household greenhouses, which perform additional functions – heating the living quarters, lighting it, moistening the winter overdried air, growing food, decorating house interior, providing psychological support. New technologies for growing a variety of plants and organic wastes decomposition are discussed. Energetic autonomy is provided by means coupling wind generator with high-heat accumulators based on cheap solid heat-storage materials coupled, in its turn, with Stirling engine/electrical generator unit. Due to “macro-composite” structure of heat exchanger it can be achieved: almost zero heat loss in the absence of thermal insulation; a significant stabilization of the temperature at the output of the thermal battery, over the whole period of the discharg

The pp -> pp pi pi pi reaction channels in the threshold region

The cross section for prompt neutral and charged three pion production in pp interactions was measured at excess energies in the range 160 - 217 MeV. That comprises the first measurement of the pp->pp pi0pi0pi0 reaction and the comparison with the pp->pp pi+pi-pi0 reaction, in a very direct way. The experiment was performed above the eta meson production threshold and the cross section normalization was obtained from a concurrent measurement of the reaction pp->pp eta with the eta decaying into 3 pions. Since the same final states are selected, the measurement has a low systematical error. The measured cross section ratio sigma(pp->pp pi+pi-pi0)/sigma(pp->pp pi0\pi0\pi0) is compared to predictions of dominance of different isobars in the intermediate state.Comment: 12 pages, 4 figures New discussion on the pp->pp3pi reaction mechanis

Состояние и тренды социально-экономического развития России: между стагнацией и рецессией

The article analyses socio-economic development of Russia in 2017-2018, as well as forecasts and estimates for the near future.It compares Russian and global economic development trends in terms of gross domestic product (GDP), industrial production and other major macroeconomic indicators.The authors address problems, threats and risks associated with ensuring accelerated development, creating prerequisites for the implementation of the message of the President of Russia to the Federal Assembly of March 1, 2018 and the May (2018) Decree on the national goals and strategic objectives of the country’s development up to 2024 arising from this message. Particular attention is paid to the analysis of the formation and implementation of the federal budget and national projects, ensuring the growth of investment and consumer activity, growth of labor productivity and employment, and accelerating the development of the small and medium-sized businesses (SMEs), as wellas the impact of foreign threats and sanctions on the real economy, social and financial sectors.The paper considers the shortcomings of the current management system, primarily in the formation of national forecasts and federal budgets that are not focused on the implementation of economic restructuring and ensuring economic growth and social progress in priority areas of life identified by the national projects. It is these shortcomings that pose a real threat and initiate a new recession at the start of the next three-year period 2019-2021.The authors present comparative assessments of forecasts of macroeconomic indicators and, above all, the development of the real sector of the economy, ensuring the acceleration of social progress and overcoming threats to the economic, scientific, technical and social situation of the country.В статье дается анализ социально-экономического развития России в 2017-2018 гг., а также прогнозы и оценки на ближайшую перспективу. Приводится сопоставление трендов развития российской и мировой экономики по динамике валового внутреннего продукта (ВВП), промышленного производства и других важнейших макроэкономических показателей.Анализируются проблемы, угрозы и риски, связанные с обеспечением ускорения развития, созданием предпосылок для реализации Послания Президента Российской Федерации Федеральному Собранию от 1 марта 2018 г. и вытекающего из этого Послания майского (2018 г.) Указа о национальных целях и стратегических задачах развития страны до 2024 г. Особое внимание уделено анализу формирования и реализации федерального бюджета и национальных проектов, обеспечению роста инвестиционной и потребительской активности, роста производительности труда и занятости, ускорению развития малого и среднего предпринимательства (МСП), а также воздействию зарубежных угроз и санкций на реальный сектор экономики, социальную и финансовую сферы.Рассматриваются недостатки действующей системы управления, прежде всего при формировании национальных прогнозов и федеральных бюджетов, не ориентированных на осуществление структурной перестройки экономики и обеспечение экономического роста и социального прогресса в приоритетных сферах жизнедеятельности, определенных национальными проектами. Именно эти недостатки создают реальную угрозу начала новой рецессии на старте очередной трехлетки 2019-2021 гг.Представлены сравнительные оценки прогнозов макроэкономических показателей, и прежде всего развития реального сектора экономики, обеспечивающего ускорение социального прогресса и преодоление угроз экономическому, научно-техническому и социальному положению страны

Production of eta and 3pi mesons in the pd->3HeX reaction at 1360 and 1450 MeV

The cross sections of the pd -> 3He eta, pd -> 3He pi0 pi0 pi0 and pd -> 3He pi+ pi- pi0 reactions have been measured at beam kinetic energies T_p= 1360 MeV and T_p= 1450 MeV using the CELSIUS/WASA detector setup. At both energies, the differential cross section dsigma/dOmega of the eta meson in the pd -> 3He eta reaction shows a strong forward-backward asymmetry in the CMS. The ratio between the pd -> 3He pi+ pi- pi0 and the pd -> 3He pi0 pi0 pi0 cross sections has been analysed in terms of isospin amplitudes. The reconstructed invariant mass distributions of the pi-pi, 3He-pi and 3He-2pi systems provide hints on the role of nucleon resonances in the 3pi production process.Comment: Shorter version accepted to EPJA 10 pages 14 figure

Search for squarks and gluinos in events with isolated leptons, jets and missing transverse momentum at s√=8 TeV with the ATLAS detector

The results of a search for supersymmetry in final states containing at least one isolated lepton (electron or muon), jets and large missing transverse momentum with the ATLAS detector at the Large Hadron Collider are reported. The search is based on proton-proton collision data at a centre-of-mass energy s√=8 TeV collected in 2012, corresponding to an integrated luminosity of 20 fb−1. No significant excess above the Standard Model expectation is observed. Limits are set on supersymmetric particle masses for various supersymmetric models. Depending on the model, the search excludes gluino masses up to 1.32 TeV and squark masses up to 840 GeV. Limits are also set on the parameters of a minimal universal extra dimension model, excluding a compactification radius of 1/R c = 950 GeV for a cut-off scale times radius (ΛR c) of approximately 30

Single hadron response measurement and calorimeter jet energy scale uncertainty with the ATLAS detector at the LHC

The uncertainty on the calorimeter energy response to jets of particles is derived for the ATLAS experiment at the Large Hadron Collider (LHC). First, the calorimeter response to single isolated charged hadrons is measured and compared to the Monte Carlo simulation using proton-proton collisions at centre-of-mass energies of sqrt(s) = 900 GeV and 7 TeV collected during 2009 and 2010. Then, using the decay of K_s and Lambda particles, the calorimeter response to specific types of particles (positively and negatively charged pions, protons, and anti-protons) is measured and compared to the Monte Carlo predictions. Finally, the jet energy scale uncertainty is determined by propagating the response uncertainty for single charged and neutral particles to jets. The response uncertainty is 2-5% for central isolated hadrons and 1-3% for the final calorimeter jet energy scale.Comment: 24 pages plus author list (36 pages total), 23 figures, 1 table, submitted to European Physical Journal

Measurements of fiducial and differential cross sections for Higgs boson production in the diphoton decay channel at s√=8 TeV with ATLAS

Measurements of fiducial and differential cross sections are presented for Higgs boson production in proton-proton collisions at a centre-of-mass energy of s√=8 TeV. The analysis is performed in the H → γγ decay channel using 20.3 fb−1 of data recorded by the ATLAS experiment at the CERN Large Hadron Collider. The signal is extracted using a fit to the diphoton invariant mass spectrum assuming that the width of the resonance is much smaller than the experimental resolution. The signal yields are corrected for the effects of detector inefficiency and resolution. The pp → H → γγ fiducial cross section is measured to be 43.2 ±9.4(stat.) − 2.9 + 3.2 (syst.) ±1.2(lumi)fb for a Higgs boson of mass 125.4GeV decaying to two isolated photons that have transverse momentum greater than 35% and 25% of the diphoton invariant mass and each with absolute pseudorapidity less than 2.37. Four additional fiducial cross sections and two cross-section limits are presented in phase space regions that test the theoretical modelling of different Higgs boson production mechanisms, or are sensitive to physics beyond the Standard Model. Differential cross sections are also presented, as a function of variables related to the diphoton kinematics and the jet activity produced in the Higgs boson events. The observed spectra are statistically limited but broadly in line with the theoretical expectations

Measurement of χ c1 and χ c2 production with s√ = 7 TeV pp collisions at ATLAS

The prompt and non-prompt production cross-sections for the χ c1 and χ c2 charmonium states are measured in pp collisions at s√ = 7 TeV with the ATLAS detector at the LHC using 4.5 fb−1 of integrated luminosity. The χ c states are reconstructed through the radiative decay χ c → J/ψγ (with J/ψ → μ + μ −) where photons are reconstructed from γ → e + e − conversions. The production rate of the χ c2 state relative to the χ c1 state is measured for prompt and non-prompt χ c as a function of J/ψ transverse momentum. The prompt χ c cross-sections are combined with existing measurements of prompt J/ψ production to derive the fraction of prompt J/ψ produced in feed-down from χ c decays. The fractions of χ c1 and χ c2 produced in b-hadron decays are also measured