We determine the abundance of i-band drop-outs in the recently-released HST/ACS Hubble Ultra Deep Field (UDF). Since the majority of these sources are likely to be z ≈ 6 galaxies whose flux decrement between the F775W i-band and F850LP zband arises from Lyman-alpha absorption, the number of detected candidates provides a valuable upper limit to the unextincted star formation rate at this redshi...

This paper describes the observations and data reduction techniques for the version 2.0 images and catalog of the Near-Infrared Camera and Multi-Object Spectrometer Ultra Deep Field (NICMOS UDF) Treasury program. All sources discussed in this paper are based on detections in the combined NICMOS F110Wand F160W bands only. The NICMOS images are drizzled to 0B09 pixel 1 and aligned to the Advanced...

This paper explores the nonlinear characteristics of self-excited aerodynamic forces a semi-closed box deck section to perfect theory aeroelastic response analysis. A numerical wind tunnel model was established based on computational fluid dynamics (CFD) method. The heaving-pitching coupled motion is realized by loading user-defined function (UDF) and dynamic grid technology. varying with ampli...

We report results from our z ≃ 5.5–7 galaxy search in the HST Ultra Deep Field (UDF). Using the 400-orbit of ACS data, we found 108 plausible 5.5 ≤ z ≤ 6.5 (or z ≃ 6 for short) candidates to mAB(z850) = 30.0 mag. The contamination to the sample, either due to image artifacts or known types of astronomical objects, is likely negligible. The inferred surface densities of z ≃ 6 galaxies are consis...

As the research on hybrid rocket motors advances, more accurate tools are needed to estimate performance of system by determining its fundamental parameters. One them is certainly regression rate solid fuel. Unfortunately, it depends many complex physical phenomena and interactions which vary with time, space scale, making task predicting evolution very difficult. To address this issue, Computa...

A coupled thermal-microstructural simulation model was developed to estimate the thermal history in a eutectoid steel wire rod under continuous cooling and forced-convection. The phenomena of heat transfer, phase transformation estimation boundary condition. histories were analyzed at different rates emulate forced-convection conditions by air-jet as controlled conveyor. acquired used calculate...

Despite the wide-spread applications of spray drying in production chemicals, food, and pharmaceuticals, accurate control development this unit remains an elusive task because complex interactions variables phenomena. In paper, we offer a computationally efficient closed-loop system with model predictive controller (MPC) where computational fluid dynamics (CFD) process is utilized to represent ...

A universal diluting fluid (UDF) was developed for use in membrane filtration sterility testing. Diuting fluid is used to free the filter membrane of preservative residues which could inhibit microbial recovery. Current procedures employ one of several fluids described by the United States Pharmacopeia. UF was designed to utilize the neutralizing capabilities of a combination of inactivating ag...

Waste heat recovery along with low-grade energy can be utilized for numerous applications in our daily life. This manuscript presents a novel idea of utilizing the waste from domestic cooking devices assisting solar desalination system through simulation and validated experimentally. To assess potential 2D axisymmetric model water jacket has made using ANSYS Fluent while applying user-defined f...

In this work, an existing method of capturing Fe-based fine particles by magnetic fiber is improved, and a weaving for the filter material further determined. Different combinations fields could form around fibers, which change interaction between orthogonal fibers when uniform field applied along X-, Y-, Z-axes. Therefore, process particle capture under three configurations was compared using ...