11   Transformation of Isobutyl Alcohol to Aromatics over Zeolite-Based Catalysts Transformation of Isobutyl Alcohol to Aromatics over Zeolite-Based Catalysts Lili Yu†‡, Shengjun Huang*†, Shuang Zhang†, Zhenni Liu†, Wenjie Xin†, Sujuan Xie†, and Longya Xu*†    2012 One-step transformation of isobutyl alcohol to aromatics (benzene, toluene, and xylene) has been studied in a gas phase, fixed-bed reactor system over several purely acidic zeolites and zeolite-supported metal catalysts. ZSM-5 zeolites give higher aromatics yields (42 wt %) among the evaluated zeolites, and the Si/Al ratios (Si/Al = 13–43) of ZSM-5 slightly influence their catalytic performances. During the transformation of isobutyl alcohol, large amounts of short alkanes (mainly propane and bu 查看全文

12   Human intestinal epithelial cell survival and anoikis: Differentiation state-distinct regulation and roles of protein kinase B/Akt isoforms Human intestinal epithelial cell survival and anoikis: Differentiation state-distinct regulation and roles of protein kinase B/Akt isoforms    2004 We have shown previously that human intestinal epithelial cell survival and anoikis are distinctively regulated according to the state of differentiation. Here we analyzed the roles of protein kinase B/Akt isoforms in such differentiation state distinctions. Anoikis was induced in undifferentiated and differentiated enterocytes by inhibition of focal adhesion kinase (Fak; pharmacologic inhibition or overexpression of dominant-negative mutants) or β1 integrins (antibody blocking) or by maint... 查看全文

13   New bioactive motifs and their use in functionalized self-assembling peptides for NSC differentiation and neural tissue engineering New bioactive motifs and their use in functionalized self-assembling peptides for NSC differentiation and neural tissue engineering    2012 Developing functionalized biomaterials for enhancing transplanted cell engraftment in vivo and stimulating the regeneration of injured tissues requires a multi-disciplinary approach customized for the tissue to be regenerated. In particular, nervous tissue engineering may take a great advantage from the discovery of novel functional motifs fostering transplanted stem cell engraftment and nervous fiber regeneration. Using phage display technology we have discovered new peptide sequences that bind... 查看全文

14   Correlations among chains along a crosslinked path in a phantom network and their characterization by SANS Correlations among chains along a crosslinked path in a phantom network and their characterization by SANS A. Kloczkowski, J. E. Mark, B. Erman    1992 查看全文

15   Palliative care nursing education: a review of research findings† Palliative care nursing education: a review of research findings†    2006 Recently, there has been considerable interest shown in research studies that identify the needs of dying patients and their families, as well as the needs of health care professionals who care for the dying. This particular type of research has significantly contributed to an increase in the awareness of health care professionals of the need to look critically at the ways dying patients and their families are cared for. Moreover, this awareness has led to demands for death education and, in rec... 查看全文

16   On optimization of the powder plasma arc surfacing process On optimization of the powder plasma arc surfacing process J. N. DuPont    1998 查看全文

17   New method for the design of the fiber-optical digital interface in current differential protection New method for the design of the fiber-optical digital interface in current differential protection    2005 Based on an analysis of the fiber-optical current differential protection and its fiber-optical digital interface, it is shown that the communication performance and reliability can be improved by using a programmable logic device in the design of fiber-optical digital circuit. Moreover, the hardware and the logic realization using PLD for the fiber-optical digital circuit are detailed. This method is supported by its successful application in an actual relay for the simple hardware, flexible co... 查看全文

18   New phases in the ferroelectric liquid crystal MHPOBC studied by differential scanning calorimetry New phases in the ferroelectric liquid crystal MHPOBC studied by differential scanning calorimetry    1989 Phase transitions of L- and D-enantiomers of 4-(1-methylheptyloxycalbonyl)phenyl 4′-octyloxybiphenyl-4-carboxylate (MHPOBC) were studied by the DSC method. Two new phases have been observed between the smectic A phase and the smectic C phase and between the smectic C phase and the third stable state (SY phase) in both L- and D-MHPOBC. The new phases disappear by the introduction of more than 3% D-MHPODC into L-MHPOBC and vice versa. A phase diagram was constructed for the enantiometric mix... 查看全文

19   SEM and AFM Study on Nanoparticles Used as Lubricating Oils Additives SEM and AFM Study on Nanoparticles Used as Lubricating Oils Additives Gu Zhuoming    2010 The CeO2 nanoparticles were used as lubricating oil additives. The modified and surface-modified CeO2 nanoparticles exhibit good dispersion and stability in the lubricating oils. The constructure,morphology and mean diameter of nanoparticles of CeO2 were characterized and measured by transmission electron microscope(TEM) and X-ray diffraction (XRD). Tribological properties of the lubricating oils with CeO2 nanoparticles additives were evaluated on a four-ball tribotester. T... 查看全文

20   Direct synthesis of N -acylpyrrolidines from tetrahydrofuran and nitriles of aliphatic and aromatic acids on zeolite catalysts under supercritical conditions Direct synthesis of N -acylpyrrolidines from tetrahydrofuran and nitriles of aliphatic and aromatic acids on zeolite catalysts under supercritical conditions N. Ya. Usachev, V. P. Kalinin, E. A. Udal’tsova, S. Yu. Davydov;A. O. Chizhov    2009 The tetrahydrofuran-nitrile (CH3CN, n-C4H9CN, C6H5CN)-zeolite (faujasites, mordenite, beta, pentasils) system and its transformations under supercritical conditions were studied. The feasibility of direct synthesis of the corresponding N-acylpyrrolidines from THF and nitriles of aliphatic and aromatic acids was shown for the first time. The dependence of the THF reaction with nitriles on the temperature, the reaction time, the nature of the exchanged cations in zeolite, the type ... 查看全文

21   Lights, Camera, Action: Integrating Popular Film in the Health Classroom Lights, Camera, Action: Integrating Popular Film in the Health Classroom P.M. Nilsson, S.-E. Johansson and J. Sundquist    2009 查看全文

22   DIFFERENTIAL VISCOMETER. I. A NEW APPROACH TO THE MEASUREMENT OF SPECIFIC VISCOSITIES OF POLYMER SOLUTIONS. DIFFERENTIAL VISCOMETER. I. A NEW APPROACH TO THE MEASUREMENT OF SPECIFIC VISCOSITIES OF POLYMER SOLUTIONS.    1985 A new type of solution viscometer is described that measures the specific viscosity directly. This is accomplished with a balanced network of four capillaries arranged in a manner analogous to a Wheatstone bridge. A differential pressure transducer measures the increase in pressure across the bridge when a solution is injected into one of the capillaries while solvent flows continuously in the other three capillaries. The differential pressure is proportional to the specific viscosity of the sol... 查看全文

23   On the existence of periodic solutions to a p-Laplacian neutral differential equation in the critical case On the existence of periodic solutions to a p-Laplacian neutral differential equation in the critical case    2009 In this paper, the author studies the existence of periodic solutions for a second order neutral functional differential equation (φp (x (t) - c x (t - τ))′)′ = f (x (t)) x′ (t) + g (t, x (t - μ (t))) + e (t) in the critical case | c | = 1. By analyzing some properties of the linear difference operator A : [A x] (t) = x (t) - c x (t - τ) and using Mawhin's continuation theorem, some new results are obtained. © 2009. 查看全文

24   Asymptotically Convergent Modified Recursive Least-Squares with Data-Dependent Updating and Forgetting Factor for Systems with Bounded Noise SOURA DASGUPTA AND YIH-FANG Asymptotically Convergent Modified Recursive Least-Squares with Data-Dependent Updating and Forgetting Factor for Systems with Bounded Noise SOURA DASGUPTA AND YIH-FANG Unknown Authors    0 Ahstrucf-Continual updating of estimates required by most recursive estimation schemes often involves redundant usage of information and may result in system instabilities in the presence of bounded output disturbances. An algorithm which eliminates these difficulties is investigated. Based on a set theoretic assumption, the algorithm yields modified leastsquares estimates with a forgetting factor. It updates the estimates selectively depending on whether the observed data contain sufficient inf... 查看全文

25   Influence of Electrolyte Cations on Electron Transport and Electron Transfer in Dye-Sensitized Solar Cells Influence of Electrolyte Cations on Electron Transport and Electron Transfer in Dye-Sensitized Solar Cells Hongxia Wang* and Laurence M. Peter    2012 The influence of different electrolyte cations ((Li+, Na+, Mg2+, tetrabutyl ammonium (TBA+)) on the TiO2 conduction band energy (Ec) the effective electron lifetime (τn), and the effective electron diffusion coefficient (Dn) in dye-sensitized solar cells (DSCs) was studied quantitatively. The separation between Ec and the redox Fermi level, EF,redox, was found to decrease as the charge/radius ratio of the cations increased. Ec in the Mg2+ electrolyte was found to be 170 meV lower than that in th 查看全文

26   On the exponent of the cokernel of the forget-control map on K0-groups, Fund On the exponent of the cokernel of the forget-control map on K0-groups, Fund Francis X. Connolly, Stratos Prassidis    0 Abstract. For groups that satisfy the Isomorphism Conjecture in lower K-theory, we show that the cokernel of the forget-control K0-groups is composed by the NK0-groups of the finite subgroups. Using this information, we can calculate the exponent of each element in the cokernel in terms of the torsion of the group. 查看全文

27   A new semantic differential for measuring the perceived quality of aircraft sounds A new semantic differential for measuring the perceived quality of aircraft sounds    2010 A new semantic differential (SD) was developed in order to measure the quality of aircraft sounds. The SD consists of 10 items which have relation to the emitted noise of different engine components and the airframe. The items refer to technical components of an engine. The reliability of an evaluation of one sound falls below the minimum value of 0.70 if only one judge is involved. For most of the items average scores based on sample sizes up to 30 judges will satisfy the requirements concernin... 查看全文

28   New finite-difference method with minimal phase lag for the numerical solution of differential equations with engineering applications New finite-difference method with minimal phase lag for the numerical solution of differential equations with engineering applications    1999 A new finite-difference scheme with minimal phase lag, for the numerical solution of fourth-order differential equations with engineering applications, is developed in this paper. Numerical and theoretical results show that this new approach is more efficient than previously derived methods. 查看全文

29   The 1-by-3 tandem differential mobility analyzer for measurement of the irreversibility of the hygroscopic growth factor The 1-by-3 tandem differential mobility analyzer for measurement of the irreversibility of the hygroscopic growth factor    2009 A new instrument, namely the 1 3 tandem differential mobility analyzer (1 3-TDMA), has been developed. Its primary measurement is the irreversibility of the hygroscopic growth factor of aerosol particles. The instrument uses the hysteresis of phase transitions to infer the solid or aqueous state of the particles. A first DMA passes particles of a selected electric mobility at relative humidity RH0. Exiting this DMA, the particles are split into three separate flows. The first flow is exposed to ... 查看全文

30   The new tri-function method to multiple exact solutions of nonlinear wave equations The new tri-function method to multiple exact solutions of nonlinear wave equations    2008 In this paper, based on a system of the first order differential equations with three nonlinear ordinary differential equations (ODEs), a new tri-function method is presented to investigate exact solutions of a wide class of nonlinear wave equations. The method is constructive and can be carried out in a computer with the aid of symbolic computation. In particular, we apply the tri-function method to the (3+1)-dimensional Kadomtsev-Petviashvili (KP) equation and the (2+1)-dimensional nonlinear S... 查看全文

31   New high speed railway line Rome-Naples: Traffic and service hypothesis of the line New high speed railway line Rome-Naples: Traffic and service hypothesis of the line    1998 The analysis of the Italian railway network, the relevant traffic flows and the service levels offered, gives prominence to a situation of strong unbalance as the network concentrates passengers and freight traffic on the main lines (TO-MI, MI-NA-RC, BO-BA, MI-VE). While the remaining part of the network sustains traffic that is composed mainly of local trains. The TO-MI line, in particular, is utilized at the moment for a considerable circulation of trains and is affected, in some sections, by ... 查看全文

32   Mathematical and numerical models for transfer of low-density lipoproteins through the arterial walls: A new methodology for the model set up with applications to the study of disturbed lumenal flow Mathematical and numerical models for transfer of low-density lipoproteins through the arterial walls: A new methodology for the model set up with applications to the study of disturbed lumenal flow    2005 In this work we introduce and discuss several mathematical models, based on partial differential equations, devised to study the coupled transport of macromolecules as low-density lipoproteins in the blood stream and in the arterial walls. These models are accurate provided that a suitable set of physical parameters characterizing the physical properties of the molecules and of the wall layers are available. Here we turn our attention on this aspect, and propose a new methodology to compute the ... 查看全文

33   Kineticstudy of the thermal decomposition of TEA+/SAPO-5 Kineticstudy of the thermal decomposition of TEA+/SAPO-5 D. F. Brito, E. F. B. Silva, D. P. Rodrigues, M. C. N. Machado, M. A. Silva, V. Simões, M. W. N. C.    2007 A silico alumino phosphate with AFI structure (SAPO-5) was prepared in a two-phase medium and characterized by XRD, followed by the addition of TEA+. The kinetics of the TEA+/SAPO-5 thermal decomposition reaction was studied by isothermal and dynamic thermogravimetry. Two kinetic models, D3 and D4 based on diffusion processes were found as best to fit the isothermal data. On the other hand, the best fit for the dynamic data is the F1 first ... 查看全文

34   Modelling the impacts of a carbon emission-differentiated vehicle tax system on CO2 emissions intensity from new vehicle purchases in Ireland Modelling the impacts of a carbon emission-differentiated vehicle tax system on CO2 emissions intensity from new vehicle purchases in Ireland    2009 The increasing awareness of the effects of climate change on the environment and the economic pressure on oil supply has focused international attention on reducing CO2 emissions and energy usage across all sectors. In order to meet their Kyoto protocol commitments and in line with European Union policy, the Irish government has introduced a carbon-based tax system for new vehicles purchased from the 1st of July 2008. This new legislation aims to reduce carbon emissions in the transport sector, ... 查看全文

35   RUSSIA’S ELITE ATTITUDES TO THE NATO ENLARGEMENT: SOCIOLOGICAL ANALYSIS RUSSIA’S ELITE ATTITUDES TO THE NATO ENLARGEMENT: SOCIOLOGICAL ANALYSIS Dr. Leonid Kosals    0 In this paper presents analysis of Russian elite attitude to the NATO enlargement implemented on the base of a wide range of specific sociological data generated throughout the period of the last five years. It was revealed that there is no complete consensus on this realm, members of the elite occupy various positions. To analyze these variations author created typology of the elite concerning attitudes to NATO expansion and described it to understand difference in views on Russian foreign affa 查看全文

36   THE EFFECT OF POWERPOINT PRESENTATIONS ON STUDENT LEARNING AND ATTITUDES THE EFFECT OF POWERPOINT PRESENTATIONS ON STUDENT LEARNING AND ATTITUDES Hossein Nouri, Abdus Shahid    0 In recent years, the uses of PowerPoint (a form. of multimedia) presentations in classroom instruction have significantly increased globally without examination of their effects on student learning and attitudes. In this study, we test whether using PowerPoint in an accounting course enhances student short-term memory, long-term memory, and attitudes toward class presentation and the instructor. We conducted an experiment, which includes a treatment-control design, in a classroom setting through... 查看全文

37   THE EFFECTS OF AN AUDIENCE RESPONSE SYSTEM (ARS) ON ACHIEVEMENT AND ATTITUDES TOWARDS STATISTICS IN AN INTRODUCTORY STATISTICS CLASS THE EFFECTS OF AN AUDIENCE RESPONSE SYSTEM (ARS) ON ACHIEVEMENT AND ATTITUDES TOWARDS STATISTICS IN AN INTRODUCTORY STATISTICS CLASS Megan Mocko, Tim Jacobbe    0 Audience Response Systems are devices that allow for instant communication and involvement by the students in the classroom by the use of handheld remotes. The system allows students to anonymously respond to questions posed by the instructor. A study was done in the Spring of 2009 to test the impacts of using these remotes in a learning disabled classroom. Two sections of Introduction to Statistics I were taught identically except for the use of the handheld remotes: one of these sections used ... 查看全文

38   NEW APPROACH TO THE ANALYSIS OF BOTTOM HOLE ASSEMBLY PERFORMANCE. NEW APPROACH TO THE ANALYSIS OF BOTTOM HOLE ASSEMBLY PERFORMANCE.    1988 The principle of stationary potential energy is applied to study the equilibrium configuration of bottom hole assembly in a curved hole of constant curvature. The center line of a hole is used as an abscissa, while the ordinate is a radial deflection of an elastic line. To obtain solutions independent of hole size, drill collar properties, weight on bit, hole curvature, etc. , the dimensionless forms of governing differential equation and boundary conditions are applied. Solutions to two boundar... 查看全文

39   LIVE ISSUES SURROUNDING DEATH EDUCATION LIVE ISSUES SURROUNDING DEATH EDUCATION SERGIO FERNAacute;NDEZ and LOIS R. WISE    2009 查看全文

40   The impact of coastal boundaries and small hills on the precipitation distribution across southern Connecticut and Long Island, New York The impact of coastal boundaries and small hills on the precipitation distribution across southern Connecticut and Long Island, New York    2007 The modification of precipitation by the coastal land areas of Long Island (LI), New York, and southern Connecticut (CT) is examined for an extratropical cyclone over the northeast United States on 1 December 2004, which produced strong southerly flow (15-30 m s-1) below 900 mb and heavy precipitation over LI. The differential surface roughness at the coast and the hills of LI (30-80 m) and southern CT (100-250 m) enhanced the surface precipitation by 30%-50% over these regions compared with the... 查看全文

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