Time correlation function and finite field approaches to the calculation of the fifth order Raman response in liquid xenon

The fifth order, two-dimensional Raman response in liquid xenon is calculated via a time correlation function (TCF) theory and the numerically exact finite field method. Both employ classical molecular dynamics simulations. The results are shown to be in excellent agreement, suggesting the efficacy of the TCF approach, in which the response function is written approximately in terms of a single classical multitime TCF. (c) 2006 American Institute of Physics

Pengaruh Sosialisasi Perpajakan, Pengetahuan Perpajakan, dan Kualitas Pelayanan terhadap Kepatuhan Wajib Pajak dengan Kesadaran Wajib Pajak sebagai Variabel Intervening (Studi pada Kantor Pelayanan Pajak Pratama Pekanbaru Senapelan)

The purpose of this research are to analyze the influence of taxpayer socialization, taxpayer knowledge, and quality of service to taxpayer compliance, directly or indirectly, by usingtaxpayer awareness as an intervening variable.The sample of this research from of 100 correspondences who are as taxpayers listed in KPP Pratama Pekanbaru Senapelan.The method of sampling using convenience sampling. The data were analysed using the path analysis with SPSS version 19.0. The results of the research showed that the tax socialization did have effect to the tax awareness. Secondly, the tax knowledge did have effect to the tax awareness. Third, quality of service did have effect to the tax awareness.Fourth, the tax socialization did have effect tothe tax compliance. Fifth, the tax knowledge did have effect tothe tax compliance. Sixth, quality of service did have noteffect tothe tax compliance. Seventh, the tax awareness did have effect tothe tax compliance. Eighth, the tax awareness incapable as an intervening variable tax socialization to tax compliance. Ninth, the tax awareness incapable as an intervening variable tax knowledge to tax compliance. Tenth, the tax awareness able as an intervening variable quality of service to tax compliance

Trace CO2 capture by an ultramicroporous physisorbent with low water affinity.

CO2 accumulation in confined spaces represents an increasing environmental and health problem. Trace CO2 capture remains an unmet challenge because human health risks can occur at 1000 parts per million (ppm), a level that challenges current generations of chemisorbents (high energy footprint and slow kinetics) and physisorbents (poor selectivity for CO2, especially versus water vapor, and/or poor hydrolytic stability). Here, dynamic breakthrough gas experiments conducted upon the ultramicroporous material SIFSIX-18-Ni-β reveal trace (1000 to 10,000 ppm) CO2 removal from humid air. We attribute the performance of SIFSIX-18-Ni-β to two factors that are usually mutually exclusive: a new type of strong CO2 binding site and hydrophobicity similar to ZIF-8. SIFSIX-18-Ni-β also offers fast sorption kinetics to enable selective capture of CO2 over both N2 (S CN) and H2O (S CW), making it prototypal for a previously unknown class of physisorbents that exhibit effective trace CO2 capture under both dry and humid conditions

Benchmark Acetylene Binding Affinity and Separation through Induced Fit in a Flexible Hybrid Ultramicroporous Material

Structural changes at the active site of an enzyme induced by binding to a substrate molecule can result in enhanced activity in biological systems. Herein, we report that the new hybrid ultramicroporous material sql-SIFSIX-bpe-Zn exhibits an induced fit binding mechanism when exposed to acetylene, C₂H₂. The resulting phase change affords exceptionally strong C₂H₂ binding that in turn enables highly selective C₂H₂/C₂H₄ and C₂H₂/CO₂ separation demonstrated by dynamic breakthrough experiments. sql-SIFSIX-bpe-Zn was observed to exhibit at least four phases: as-synthesised (α); activated (β); and C₂H₂ induced phases (β' and γ). sql-SIFSIX-bpe-Zn-β exhibited strong affinity for C₂H₂ at ambient conditions as demonstrated by benchmark isosteric heat of adsorption (Qst ) of 67.5 kJ mol⁻¹ validated through in situ pressure gradient differential scanning calorimetry (PG-DSC). Further, in situ characterisation and DFT calculations provide insight into the mechanism of the C₂H₂ induced fit transformation, binding positions and the nature of host-guest and guest-guest interactions

Achieving Small Satellite Smart Space

There is an increasing proliferation of small satellite based solutions for diverse applications. There is an expectation to deliver mission success to match the steady upward trajectory of system performance. The present challenge facing the developer community is how to provide a balanced design approach that meets both the operational needs and practical imperatives of a small satellite solution, which can scale to constellation-level numbers, within commensurate programmatic constraints. Though functionally distinct, the drivers for government programs seeking complementary solutions to more traditional exquisite system acquisitions and “New Space” players desiring rapid ways to dependably build-out their space layer, all motivate the need to consider a hybrid approach to produce the desired end state: “Smart Space.” This approach represents a strategy that includes consideration of determining appropriate mission assurance standards, design standards, part sourcing strategy, expansion of the supply-chain, performing qualification and acceptance testing, reporting on anomalies and implementing corrective and preventive actions. SSL has a flexible, highly tailorable approach to project execution and mission assurance. This approach draws upon observable metrics for satellite fabrication, assembly, integration, and test, along with empirically measured flight performance of GEO and LEO satellites. In this paper we discuss the methods that SSL is employing for its “Smart Space” approach, across satellite production activities for both government and commercial customers, as well as recommendations for how the community should continue to evolve their methods for production engineering and verification