Design, set up and commissioning of a test facility for smokeless rich diesel combustion research

Low Temperature Combustion (LTC) is a strategy that harnesses the properties of exhaust gas, through the use of large quantities of exhaust gas recirculation (EGR), to reduce the peak combustion temperatures below that favoured by the formation processes of oxides of nitrogen (Ox) and those of soot. There is interest within the fuels research community in investigating the effects of diesel fuel formulations on LTC, using a suitable engine test platform. The objective of this study was to design and set up a test apparatus capable of achieving LTC in a diesel research engine, that could subsequently be used to study LTC behaviour with different fuels. In addition, it was necessary to present test data demonstrating the engine's performance, in terms of engine-out emissions and indicated specific fuel consumption (ISFC), transitioning between conventional diesel combustion (CDC) and LTC. The mechanical, electrical and control requirements for attaining CDC and LTC conditions were investigated in the literature and through consultations with experts in the fuels research field. These requirements were distilled into a definitive System Requirement Specification

Nat \u27King\u27 Cole to Mr. Meredith (10 October 1962)

https://egrove.olemiss.edu/mercorr_pro/2100/thumbnail.jp

Effects of asphericity and substructure on the determination of cluster mass with weak gravitational lensing

Weak gravitational lensing can be used to directly measure the mass along a line-of-sight without any dependence on the dynamical state of the mass, and thus can be used to measure the masses of clusters even if they are not relaxed. One common technique used to measure cluster masses is fitting azimuthally-averaged gravitational shear profiles with a spherical mass model. In this paper we quantify how asphericity and projected substructure in clusters can affect the virial mass and concentration measured with this technique by simulating weak lensing observations on 30 independent lines-of-sights through each of four high-resolution N-body cluster simulations. We find that the variations in the measured virial mass and concentration are of a size similar to the error expected in ideal weak lensing observations and are correlated, but that the virial mass and concentration of the mean shear profile agree well with that measured in three dimensional models of the clusters. The dominant effect causing the variations is the proximity of the line-of-sight to the major axis of the 3-D cluster mass distribution, with projected substructure only causing minor perturbations in the measured concentration. Finally we find that the best-fit "universal" CDM models used to fit the shear profiles over-predict the surface density of the clusters due to the cluster mass density falling off faster than the r^{-3} model assumption.Comment: 10 pages, 10 figures, accepted by MNRA

The composition of Ehrlich's salvarsan: Resolution of a century-old debate

Ehrlich introduced in 1910 the compound 3-amino-4-hydroxyphenylarsenic(I) [Salvarsan, arsphenamine, Ehrlich 606,] as a remedy for syphilis, a disease caused by the spirochaete bacterium Treponema pallidum. His methodical search for a specific curative for an identified disease can be regarded as the introduction of targeted chemotherapy

How the Median S-Band Circular Polarization Ratio (CPR) of Kilometer-Scale Craters Evolves with Time on the Lunar Maria

No abstract availabl

La musique comme cadre dans la mise en scène de Peter Brook

Dans la plupart des spectacles de Peter Brook, la musique de scène ne semble tenir qu’une place marginale de simple accompagnement. Mais en raison de son rôle conséquent dans leur genèse et dans leur construction, ainsi que dans leur réception par le spectateur, nous postulons qu’elle sert aussi subtilement de cadre aux spectacles et à l’ensemble de la démarche théâtrale du metteur en scène. Si l’image des marges paraît effectivement significative pour évoquer l’aire d’influence de la musique..

Senior Recital: Eric Donaldson, trumpet and flugelhorn & Erik Kosman, percussion

This recital is presented in partial fulfillment of requirements for the degrees Bachelor of Music in Music Education. Mr. Donaldson studies trumpet with Douglas Lindsey. Mr. Kosman studies percussion with John Lawless.https://digitalcommons.kennesaw.edu/musicprograms/1456/thumbnail.jp

Making Investments Transparent (in English Education)

ELA educators situate the relevancy of disciplinary content, while facing sociopolitical narratives that often challenge those contributions. “Making Investments Transparent” frames pre-service teachers’ reflections within an approach to English Education that illumines investments in students—a methodology applicable to students entering professional careers across disciplines

Asymmetric Gravitational Lenses in TeVeS and Application to the Bullet Cluster

Aims: We explore the lensing properties of asymmetric matter density distributions in Bekenstein's Tensor-Vector-Scalar theory (TeVeS). Methods: Using an iterative Fourier-based solver for the resulting non-linear scalar field equation, we numerically calculate the total gravitational potential and derive the corresponding TeVeS lensing maps. Results: Considering variations on rather small scales, we show that the lensing properties significantly depend on the lens's extent along the line of sight. Furthermore, all simulated TeVeS convergence maps strongly track the dominant baryonic components, non-linear effects, being capable of counteracting this trend, turn out to be very small. Setting up a toy model for the cluster merger 1E0657-558, we infer that TeVeS cannot explain observations without assuming an additional dark mass component in both cluster centers, which is in accordance with previous work.Comment: LaTex, 14 pages, 10 figures, references added, 2 figures removed, minor text changes to fit accepted version (A&A

Student Expenses in Residency Interviewing

Introduction. The student costs of residency interviewing areof increasing concern but limited current information is available.Updated, more detailed information would assist studentsand residency programs in decisions about residency selection.The study objective was to measure the expenses and time spentin residency interviewing by the 2016 graduating class of the Universityof Kansas School of Medicine and assess the impact ofgender, regional campus location, and primary care application. Methods. All 195 students who participated in the 2016 NationalResidency Matching Program (NRMP) received a 33 item questionnaireaddressing interviewing activity, expenses incurred, timeinvested and related factors. Main measures were self-reported estimatesof expenses and time spent interviewing. Descriptive analyseswere applied to participant characteristics and responses. Multivariateanalysis of variance (MANOVA) and chi-square tests comparedstudents by gender, campus (main/regional), and primary care/other specialties. Analyses of variance (ANOVA) on the dependentvariables provided follow-up tests on significant MANOVA results. Results. A total of 163 students (84%) completed the survey. Theaverage student reported 38 (1 - 124) applications, 16 (1 - 54) invitations,11 (1 - 28) completed interviews, and spent $3,500($20 - $12,000) and 26 (1 - 90) days interviewing. No significantdifferences were found by gender. After MANOVA and ANOVAanalyses, non-primary care applicants reported significantlymore applications, interviews, and expenditures, butless program financial support. Regional campus students reportedsignificantly fewer invitations, interviews, and daysinterviewing, but equivalent costs when controlled for primarycare application. Cost was a limiting factor in acceptinginterviews for 63% and time for 53% of study respondents. Conclusions. Students reported investing significant time andmoney in interviewing. After controlling for other variables, primarycare was associated with significantly lowered expenses.Regional campus location was associated with fewer interviewsand less time interviewing. Gender had no significantimpact on any aspect studied. KS J Med 2017;10(3):50-54