An experimental investigation of drop deformation and breakup in steady, two-dimensional linear flows

We consider the deformation and burst of small fluid droplets in steady linear, two-dimensional motions of a second immiscible fluid. Experiments using a computer-controlled, four-roll mill to investigate the effect of flow type are described, and the results compared with predictions of several available asymptotic deformation and burst theories, as well as numerical calculations. The comparison clarifies the range of validity of the theories, and demonstrates that they provide quite adequate predictions over a wide range of viscosity ratio, capillary number, and flow type

Written evidence to the House of Commons Business and Skills Committee (ed) Local enterprise partnerships and the Regional Growth Fund

The Business, Innovation and Skills Committee announced an inquiry looking into the Local Enterprise Partnerships and the Regional Growth Fund. In particular, the Committee examined how the proposed new structures would work, alongside issues such as distribution of funding, value for money, accountability, timing, transitional arrangements and required legislation. A Report on the Local Enterprise Partnerships was published on 26 April 2013

A computer-controlled four-roll mill for investigations of particle and drop dynamics in two-dimensional linear shear flows

In this paper we describe the design and operating characteristics of a computer-controlled four-roll mill for investigations of particle and drop dynamics in two-dimensional linear flows. The control system is based upon the use of: a video camera to visualize the instantaneous position of the drop or particle; a PDP 11/23 computer, with a pipeline processor acting as an interface between the camera and computer, to calculate the position and implement a control strategy, and d.c. stepping motors to convert an electronic signal to angular velocities of the four rollers. The control objective is to keep the centre of mass of the drop/particle at the centre of the region between the rollers where there is a stagnation point in the undisturbed flow, while maintaining the shear-rate and the ratio of vorticity to strain rate in the flow at fixed values. The resulting system is suitable for studies of: the rotational motions of single solid particles; the deformation and burst of single droplets; or the hydrodynamic interactions of two particles or drops, one of which is held with its centre-of-mass fixed at the stagnation point of the undisturbed flow. In all cases, the flow can be varied from pure rotation to pure strain, and the shear rate can be either steady or changing as a prescribed function of time

Characteristics and Risk Management Needs of Limited-Resource and Socially Disadvantaged Farmers

Small U.S. farms and those run by socially disadvantaged minority operators tend not to purchase insurance or to participate in insurance-type programs operated by USDA. This report traces the lack of use of such risk management measures to several characteristics of such farmers, who include females, blacks, American Indians, Asian/Pacific Islanders, and operators of Spanish origin. These farmers tend, more than the typical U.S. farm, to raise livestock rather than crops, and there are no government-sponsored insurance-type programs for livestock.risk management, crop insurance, limited-resource farmers, limited-opportunity farmers, small farms, socially disadvantaged farmers, Farm Management, Risk and Uncertainty,

Survey of the Millard elementary summer school program

For hundreds of thousands of youngsters across the country, the good ole summertime is better than ever. However, there are some children who must attend summer school to make up work that they have failed during the school year. The parents of the Millard School District elementary students are making for the reasons that their child has been referred for the remedial work during the summer school. Perhaps the parents had valid reasons for questioning the summer school program offered in the Millard Public School System. Why was Millard\u27s summer school program making slow progress in the areas of curriculum and enrollment? Was it because of a lack of objectives developed by the teachers themselves? Or was it the criteria used for enrollment? The administration as well as the parents, teachers, and pupils had searching questions about the summer school program

Improvements in a Hybrid Stochastic/Deterministic Method for Transient Three-Dimensional Neutron Transport

This research develops an improved methodology (and corresponding code) for solving the time-dependent, three-dimensional Boltzmann Transport Equation with explicit representation of delayed neutrons. These improvements are incorporated in a modified version of the code TDKENO, entitled TDKENO-M. Specifically, these improvements are: 1. Incorporate the improved quasistatic methodology into an existing quasistatic framework. Specifically, include the flux shape derivative in the fixed source term instead of being neglected. Also, compute the point kinetics parameters deterministically by their inner product definitions. 2. Incorporate a hierarchy of three different integration time intervals for the numerical solution of the coupled set of ordinary differential equations. The shape function is assumed to vary linearly over the largest time interval. The second largest time interval is used for determining the point kinetics parameters. Finally, the smallest time step is used for solving the point kinetics equations. 3. Apply TDKENO-M to benchmark problems to determine the accuracy of the method. Particularly, TDKENO-M is applied to one- and three-dimensional benchmark problems to evaluate its neutronic capabilities. 4. Combine input requirements into a single input file so that TDKENO-M is less cumbersome to execute. 5. Develop the ability to restart a calculation at an intermediate problem time. 6. Develop a user-friendly manual for using TDKENO-M which describes in detail the input requirements as well as the output files, subroutines, modules, and the calculational flow. Results show that TDKENO-M is quite accurate in comparison with benchmark calculations (less than 2% error in power trace for ANL Benchmark 16-A1) with as much as a factor of 500 reduction in CPU time relative to TDKENO

Letter From Carol Bentley Rafter to Eleanor Snell

This letter from Carol Bentley, Ursinus College Class of 1961, congratulates Eleanor Snell on the occasion of her retirement from Ursinus College.https://digitalcommons.ursinus.edu/snell_docs/1070/thumbnail.jp

Master of Science

thesisCreatine is necessary to transfer energy between cellular compartments. Creatine is converted to phosphocreatine by the creatine kinase reaction within mitochondria and phosphocreatine generates adenosine triphosphate (ATP) in the cytoplasm. ATP powers most of the energy consuming reactions in cells. Defects in creatine synthesis or transport disrupt this process and result in brain creatine deficiency syndromes. Affected patients have developmental delay, hypotonia, autism, seizures, and impaired motor skill development. Defects of creatine synthesis are caused by impaired activity of the enzymes guanidinoacetate methyltransferase (GAMT) and arginine:glycine amidinotransferase (AGAT), both transmitted as autosomal recessive traits, whereas defect in creatine transport (SLC6A8 Gene) are transmitted in an X-linked recessive manner. Patients with defects in creatine synthesis respond to creatine supplementation and dietary manipulations. This therapy is more effective if initiated before mental retardation is evident. For this reason, diagnosis should be accomplished as soon as possible with newborn screening. Here we report a reliable three-tier testing method for screening for GAMT and AGAT deficiency in newborns' v blood spots. Creatine and guanidinoacetate are detected in newborn screening blood spots by tandem mass spectrometry (MS/MS). Secondtier testing using LC-MS/MS confirms more quantitatively low creatine and increased or decreased guanidinoacetate levels, while third-tier testing consists of DNA sequencing to identify mutations in the GAMT and AGAT Genes. This test can potentially identify newborns with GAMT and AGAT deficiencies with low false positive rate and could be applied to newborn screening nationwide