Recent status of the understanding of neutrino-nucleus cross section

In this work we have presented current understanding of neutrino-nucleon/nucleus cross sections in the few GeV energy region relevant for a precise determination of neutrino oscillation parameters and CP violation in the leptonic sector. In this energy region various processes like quasielastic and inelastic production of single and multipion production, coherent pion production, kaon, eta, hyperon production, associated particle production as well as deep inelastic scattering processes contribute to the neutrino event rates.Comment: 9-Pages, 4-figures, Talk given at DAE-HEP Symposium held at Delhi University, 12-16 December, 201

A hydrodynamic study of a fast‐bed dual circulating fluidized bed for chemical looping combustion

This study explores the use of a dual interconnected circulating fluidized bed (CFB) for chemical looping combustion. This design can enhance gas–solid interactions, but it is difficult to control the solid transfer and circulation rates. With the use of a 1:1 scale cold-flow model, an investigation determining the hydrodynamic behavior of the dual CFB system has been conducted. The cold-flow system consists of two identical fast-bed risers, each with an internal diameter of 100 mm and a height of 7 m. The simplified cold-flow model is based on the chemical looping Pilot-Scale Advanced CO2 Capture Technology (PACT) facility at Cranfield. Here, we have determined the minimum fluidization and transport velocities, and we have assessed the solid density profiles, transport capacity, and potential for the dilution by air/N2 leakage into the CO2 stream exiting the fuel reactor. The experimental procedure uses two different bed materials, molochite (ceramic clay) and FE100 (iron particles), and it satisfies the dynamic scaling laws to model the bed inventory within the system. The results indicate that the two fast-bed risers share similar density and pressure profiles. Stable circulation can be achieved through pneumatic transport. The circulation rate of the system is flexible and can be adjusted by altering the fluidization velocity in the riser and by altering the bed inventory. The gas leakage from the loop seal to the cyclone was found to be sensitive to the bed height and fluidization velocity in the loop seal. However, by maintaining a loop-seal bed height above 600 mm during operation, the outlet stream remains undiluted

Effect of Reinforcing by Palms-Carbon Hybrid Fibers on Mechanical Properties of Conbextra Epoxy EP-10 Resin

يهدف هذا البحث الى دراسة تاثير التقوية بنسب مختلفة (20%,40%,60%) من الياف النخيل-الكاربون الهجينة على الخواص الميكانيكية لراتنج الإيبوكسي كونبكسترا EP-10 ,حيث الهدف من دكج هذين النوعين من الألياف في ارضية واحدة هو الحفاظ على الخواص الميكانيكية و خفض تكاليف التصنيع . في هذا البحث تم دراسة مقاومة الصدمة ,مقامة الشد , مقاومة الانثناء , الصلادة للمادة المركبة الناتجة المقواة بالياف هجينة من ألياف النخيل الطبيعية و الياف الكاربون بشكل حصيرة ثانية (0°-90°) و بكثافة ( 1.45g/). حيث تم مزج هذه الالياف في ارضية من راتنج الايبوكسي كونبكسترا و بنسب تقوية مختلفة و دراسة اثر ذلك على الخواص الميكانيكية , اظهرت النتائج تحسن هذه الخواص بعد التقوية بالالياف اضافة الى زيادة قيمة هذه الخواص مع زيادة نسبة التقوية بالالياف اضافة الى ويادة قيمة هذه الخواص مع زيادة نسبة التقوية. فبالنسبة الى مقاومة الصدمة ارتفعت من ( ) و مقاومة الشد من (70MPa) الى (365MPa) و مقاومة الانثناء من (1.162GPa) الى (1.55GPa) و الصلادة من( /8.5 N) الى (80N/  ) و لنسب تقوية 0% و 60% على التوالي. يهدف هذا البحث الى دراسة تاثير التقوية بنسب مختلفة (20%,40%,60%) من الياف النخيل-الكاربون الهجينة على الخواص الميكانيكية لراتنج الإيبوكسي كونبكسترا EP-10 ,حيث الهدف من دكج هذين النوعين من الألياف في ارضية واحدة هو الحفاظ على الخواص الميكانيكية و خفض تكاليف التصنيع . في هذا البحث تم دراسة مقاومة الصدمة ,مقامة الشد , مقاومة الانثناء , الصلادة للمادة المركبة الناتجة المقواة بالياف هجينة من ألياف النخيل الطبيعية و الياف الكاربون بشكل حصيرة ثانية (0°-90°) و بكثافة ( 1.45g/). حيث تم مزج هذه الالياف في ارضية من راتنج الايبوكسي كونبكسترا و بنسب تقوية مختلفة و دراسة اثر ذلك على الخواص الميكانيكية , اظهرت النتائج تحسن هذه الخواص بعد التقوية بالالياف اضافة الى زيادة قيمة هذه الخواص مع زيادة نسبة التقوية بالالياف اضافة الى ويادة قيمة هذه الخواص مع زيادة نسبة التقوية. فبالنسبة الى مقاومة الصدمة ارتفعت من ( ) و مقاومة الشد من (70MPa) الى (365MPa) و مقاومة الانثناء من (1.162GPa) الى (1.55GPa) و الصلادة من( /8.5 N) الى (80N/  ) و لنسب تقوية 0% و 60% على التوالي.The objective of this research is to study the effect of reinforcing with different percentage (20%, 40%, and 60%) of hybrid palms-carbon fibers on mechanical properties of conbextra epoxy EP-10 resin. The aim from this incorporation of both fibers into a single matrix will stabilize mechanical properties and lowering manufacturing costs. In this research the impact strength, tensile strength, flexural strength, and hardness were studied for composite material reinforced with hybrid fibers for palms and carbon as a woven roving (0°-90°) with density (1.45g/m3). These fibers were mixed with conbextra epoxy EP-10 resin in different reinforcement percentage and studied these effects on the mechanical properties of conbextra epoxy EP-10 resin. It has shown an improvement in these mechanical properties after reinforcement by fibers where the value of mechanical properties will increase with increasing percentage of reinforcement. Impact strength increased from (23Kj/m2) to (170Kj/m2), and tensile strength from(70MPa) to (365MPa), and flexural strength from(0.162GPa) to (1.55GPa), and hardness from(8.5N/m2) to (80N/m2) for reinforcing percentages 0% and 60% respectively

Active Fluidization Storage Applications for CSP

AbstractThe current paper proposes three thermal storage concepts for solar thermal power plants, which are all based on sand powder as storage medium. The solid powder is used in a manner similar to fluid storage media such as molten salt. Fluidization is needed in order to produce fluid-like behavior of the powder. Applying powders as storage media for thermal energy storages offers advantages such as low cost, no freezing danger and hence no melting effort, no corrosion, local availability and high allowable temperatures. The storage media demand for all three concepts is estimated

Sustainable Design Standards in India: The Excluded Issues

Due to the recent emphasis on “Green Building” in different countries around the world, LEED (Leadership in Energy and Environmental Design) certification has emerged as one of the major recognized standards for measuring building sustainability. In 2005, the Indian Green Building Council (IGBC) adopted the original US rating system without substantive modifications in response to the significant contextual differences between the United States and India. In 2007, the IGBC published the LEED INDIA NC Version 1.0 with changes to better respond to the Indian context. This version did not address climatic variations, which demand focused attention on particular sections, such as natural ventilation and daylighting. This paper highlights the essential significance of these critical issues in latest LEED Indian Guidelines in the current LEED standards with respect to comparison between performance of green buildings with and without the LEED certification

Nucleon and nuclear structure functions with non-perturbative and higher order perturbative QCD effects

We have studied the nucleon structure functions $F_{iN}^{EM} (x,Q^2);~i=1,2$, by including contributions due to the higher order perturbative QCD effect up to NNLO and the non-perturbative effects due to the kinematical and dynamical higher twist (HT) effects. The numerical results for $F_{iN}^{EM}(x,Q^2)$ are obtained using Martin, Motylinski, Harland-Lang, Thorne (MMHT) 2014 NLO and NNLO nucleon parton distribution functions (PDFs). The dynamical HT correction has been included following the renormalon approach as well as the phenomenological approach and the kinematical HT effect is incorporated using the works of Schienbein et al. These nucleon structure functions have been used as an input to calculate the nuclear structure functions $F_{iA}^{EM} (x,Q^2)$. In a nucleus, the nuclear corrections arise because of the Fermi motion, binding energy, nucleon correlations, mesonic contribution, shadowing and antishadowing effects. These nuclear corrections are taken into account in the numerical calculations to obtain the nuclear structure functions $F_{iA}^{EM} (x,Q^2)$, for the various nuclear targets like $^{12}C$, $^{27}Al$, $^{56}Fe$, $^{64}Cu$, $^{118}Sn$, $^{197}Au$ and $^{208}Pb$ which are of experimental interest. The effect of isoscalarity correction for nonisoscalar nuclear targets has also been studied. The results for the $F_{iA}^{EM} (x,Q^2)$ are compared with nCTEQ nuclear PDFs parameterization as well as with the experimental results from JLab, SLAC and NMC in the kinematic region of $0.1 \le x \le 0.8$ for several nuclei.Comment: arXiv admin note: text overlap with arXiv:1705.0990

Electromagnetic and Weak Nuclear Structure Functions F1,2(x,Q2)F_{1,2}(x,Q^2) in the Intermediate Region of Q2Q^2

We have studied nuclear structure functions $F_{1A}(x,Q^2)$ and $F_{2A}(x,Q^2)$ for electromagnetic and weak processes in the region of $1 GeV^2 < Q^2 <8 GeV^2$. The nuclear medium effects arising due to Fermi motion, binding energy, nucleon correlations, mesonic contributions and shadowing effects are taken into account using a many body field theoretical approach. The calculations are performed in a local density approximation using a relativistic nucleon spectral function. The results are compared with the available experimental data. Implications of nuclear medium effects on the validity of Callan-Gross relation are also discussed.Comment: Published in Journal of the Physical Society of Japan (NuInt-2015