Possibility of Slag Sensible Heat Recovery on Drum-like Installations

A variant of utilizing of slag physical heat in drum-like installations has been considered. A high-temperature melt is delivered to movable metal bodies. Heat is picked up from the working bodies surface and newly generated surfaces of slag due to interaction with working bodies. Surface of slag grains, as they cool down, allows to pick up heat with various energy characteristics. Keywords: smelter slags, heat content, drum-like installations, picking up and utilization of heat with various energy characteristic

Noncompact SL(2,R) spin chain

We consider the integrable spin chain model - the noncompact SL(2,R) spin magnet. The spin operators are realized as the generators of the unitary principal series representation of the SL(2,R) group. In an explicit form, we construct R-matrix, the Baxter Q-operator and the transition kernel to the representation of the Separated Variables (SoV). The expressions for the energy and quasimomentum of the eigenstates in terms of the Baxter Q-operator are derived. The analytic properties of the eigenvalues of the Baxter operator as a function of the spectral parameter are established. Applying the diagrammatic approach, we calculate Sklyanin's integration measure in the separated variables and obtain the solution to the spectral problem for the model in terms of the eigenvalues of the Q-operator. We show that the transition kernel to the SoV representation is factorized into a product of certain operators each depending on a single separated variable.Comment: 29 pages, 12 figure

Aluminum nanoscales as hormetic response effectors in Fagopyrum esculentum seedlings

Aluminum (Al) nanoscales have been applied in many areas of production industries to produce cosmetic fillers, packaging materials, cutting tools, glass products, metal products, semiconductor materials, plastics, etc. Several studies have demonstrated the contradictory data for positive and negative effects of Al nanoscales on plants. The total length of seedlings grown for 21 days and the relative water content are used to determine the stimulating effects. In addition, the enhancement effect of Al nanoscales on photosynthetic pigments and the total phenolic and anthocyanin contents are determined. The growth stimulation and increase of the content of photosynthetic pigments are observed at the addition of 50 and 250 mg/L of Al nanoscales. Plant growth stimuli and the fixed beneficial action of Al nanoscales on morphofunctional traits at physiological and biochemical levels are interpreted as the hormesis phenomenon.Наночастинки алюмінію (Al) використовуються у багатьох сферах промислового виробництва для отримання косметичних наповнювачів, пакувальних матеріалів, різальних матеріалів, виробів зі скла, металевих виробів, матеріалів з напівпровідниковими властивостями, пластмас тощо. Існують суперечливі дані про позитивні та негативні ефекти наночастинок Al на рослини. Запропоновано для визначення стимулюючих ефектів наночастинок Al використовувати загальну довжину 21 добових проростків та відносну тургесцентність. Крім того, визначено позитивний вплив наночастинок Al на вміст фотосинтетичних пігментів, загальний вміст фенольних сполук та антоціанів. Додавання наночастинок Al у концентрації 50 та 250 мг/л спричиняє стимуляцію росту та збільшення вмісту фотосинтетичних пігментів. Стимуляція росту рослин і позитивний вплив наночастинок Al на морфофункціональні характеристики на фізіологічному та біохімічному рівнях інтерпретовані як феномен гормезису.Наночастицы алюминия (Al) используются во многих сферах промышленного производства для получения косметических наполнителей, упаковочных материалов, режущих материалов, изделий из стекла, металлических изделий, материалов с полупроводниковыми свойствами, пластмасс и т. п. Существуют противоречивые данные о положительных и отрицательных эффектах наночастиц Al на растения. Предложено для определения стимулирующих эффектов наночастиц Al использовать общую длину 21 суточных проростков и относительную тургесцентность. Кроме того, определено положительное влияние наночастиц Al на содержание фотосинтетических пигментов, общее содержание фенольных соединений и антоцианов. Добавление наночастиц Al в концентрации 50 и 250 мг/л приводит к стимуляции роста и увеличению содержания фотосинтетических пигментов. Стимуляция роста растений и положительное влияние наночастиц Al на морфофункциональные характеристики на физиологическом и биохимическом уровнях интерпретированы как феномен гормезиса

Classical/quantum integrability in AdS/CFT

We discuss the AdS/CFT duality from the perspective of integrable systems and establish a direct relationship between the dimension of single trace local operators composed of two types of scalar fields in N=4 super Yang-Mills and the energy of their dual semiclassical string states in AdS(5) X S(5). The anomalous dimensions can be computed using a set of Bethe equations, which for ``long'' operators reduces to a Riemann-Hilbert problem. We develop a unified approach to the long wavelength Bethe equations, the classical ferromagnet and the classical string solutions in the SU(2) sector and present a general solution, governed by complex curves endowed with meromorphic differentials with integer periods. Using this solution we compute the anomalous dimensions of these long operators up to two loops and demonstrate that they agree with string-theory predictions.Comment: 49 pages, 5 figures, LaTeX; v2: complete proof of the two-loop equivalence between the sigma model and the gauge theory is added. References added; v4,v5,v6: misprints correcte

Virtual Compton Scattering and Neutral Pion Electroproduction in the Resonance Region up to the Deep Inelastic Region at Backward Angles

We have made the first measurements of the virtual Compton scattering (VCS) process via the H$(e,e'p)\gamma$ exclusive reaction in the nucleon resonance region, at backward angles. Results are presented for the $W$-dependence at fixed $Q^2=1$ GeV$^2$, and for the $Q^2$-dependence at fixed $W$ near 1.5 GeV. The VCS data show resonant structures in the first and second resonance regions. The observed $Q^2$-dependence is smooth. The measured ratio of H$(e,e'p)\gamma$ to H$(e,e'p)\pi^0$ cross sections emphasizes the different sensitivity of these two reactions to the various nucleon resonances. Finally, when compared to Real Compton Scattering (RCS) at high energy and large angles, our VCS data at the highest $W$ (1.8-1.9 GeV) show a striking $Q^2$- independence, which may suggest a transition to a perturbative scattering mechanism at the quark level.Comment: 20 pages, 8 figures. To appear in Phys.Rev.

Heavy quarkonium: progress, puzzles, and opportunities

A golden age for heavy quarkonium physics dawned a decade ago, initiated by the confluence of exciting advances in quantum chromodynamics (QCD) and an explosion of related experimental activity. The early years of this period were chronicled in the Quarkonium Working Group (QWG) CERN Yellow Report (YR) in 2004, which presented a comprehensive review of the status of the field at that time and provided specific recommendations for further progress. However, the broad spectrum of subsequent breakthroughs, surprises, and continuing puzzles could only be partially anticipated. Since the release of the YR, the BESII program concluded only to give birth to BESIII; the $B$-factories and CLEO-c flourished; quarkonium production and polarization measurements at HERA and the Tevatron matured; and heavy-ion collisions at RHIC have opened a window on the deconfinement regime. All these experiments leave legacies of quality, precision, and unsolved mysteries for quarkonium physics, and therefore beg for continuing investigations. The plethora of newly-found quarkonium-like states unleashed a flood of theoretical investigations into new forms of matter such as quark-gluon hybrids, mesonic molecules, and tetraquarks. Measurements of the spectroscopy, decays, production, and in-medium behavior of c\bar{c}, b\bar{b}, and b\bar{c} bound states have been shown to validate some theoretical approaches to QCD and highlight lack of quantitative success for others. The intriguing details of quarkonium suppression in heavy-ion collisions that have emerged from RHIC have elevated the importance of separating hot- and cold-nuclear-matter effects in quark-gluon plasma studies. This review systematically addresses all these matters and concludes by prioritizing directions for ongoing and future efforts.Comment: 182 pages, 112 figures. Editors: N. Brambilla, S. Eidelman, B. K. Heltsley, R. Vogt. Section Coordinators: G. T. Bodwin, E. Eichten, A. D. Frawley, A. B. Meyer, R. E. Mitchell, V. Papadimitriou, P. Petreczky, A. A. Petrov, P. Robbe, A. Vair

Maritime aerosol network as a component of AERONET - First results and comparison with global aerosol models and satellite retrievals

The Maritime Aerosol Network (MAN) has been collecting data over the oceans since November 2006. Over 80 cruises were completed through early 2010 with deployments continuing. Measurement areas included various parts of the Atlantic Ocean, the Northern and Southern Pacific Ocean, the South Indian Ocean, the Southern Ocean, the Arctic Ocean and inland seas. MAN deploys Microtops hand-held sunphotometers and utilizes a calibration procedure and data processing traceable to AERONET. Data collection included areas that previously had no aerosol optical depth (AOD) coverage at all, particularly vast areas of the Southern Ocean. The MAN data archive provides a valuable resource for aerosol studies in maritime environments. In the current paper we present results of AOD measurements over the oceans, and make a comparison with satellite AOD retrievals and model simulations