Background and Challenges
Hydrogen produced from water splitting and clean energy sources is predicted by many to be a clean fuel that will serve as a substitute for conventional fuels because its oxidation does not emit greenhouse gases. Numerous thermochemical water splitting cycles have been proposed for clean hydrogen production. The copper-chlorine (Cu-Cl) cycle has a relatively low temperature requirement compared with other cycles and therefore is viewed as a promising method.
With PDM as the foundation, a small engineering services firm has adapted lean principles to product design in an attempt to reduce waste, drive efficiencies, and deliver better value to customers.
As an airline passenger is waiting in the terminal for his flight, he decides to plug in his tablet to charge the battery. As soon as he connects the AC/DC adapter to the tablet he hears a snap and he sees an error message on the tablet’s screen communicating that there is a power failure. Upon inspection he discovers that the connector has jarred loose and thus his battery is not charging his tablet.
These problems are not uncommon for some of the mobile products that are being sold in the market place. Seeing the individual’s frustrations from meager designs can have a dampening effect in terms of revenue and a company’s reputation. To overcome some of the quality issues in connectivity the design engineer needs to consider many characteristics of the connector. Characteristics such as electrical, mechanical, reliability, and environmental will require a detailed examination and definition. This article will explore what the considerations are on how to specify or design a connector system that is appropriate for certain applications. Then the focus will shift to devise a general guideline in which the designers can utilize to insure that a connector system can be a reliable one.
Sustainable remediation practices can be used to reduce the adverse impact caused by spills of any size in any locale, even in middle of the ocean. The goal of every spill cleanup is to contain and control the spill, limit immediate impacts and minimize long-term cleanup efforts. Selecting the sustainable response and short-term remediation options are only part of developing a sustainable spill response plan. Sustainability must be part of the planning and prevention process as well.
With the advent of more powerful microprocessors and microcontrollers at steadily decreasing prices in recent decades, the use of logic devices has blossomed. The feasibility of digital-based regulators and “smart” power supplies (which can monitor and report their own performance and health) has been amply demonstrated. Such supplies have become the status quo over less intelligent power circuitry among higher -end applications.
by Professor C. Visvanathan from the School of Environment, Resources and Development Asian Institute of Technology, Thailand. Posted 10/27/2011.
In 2009, there were 27 million displaced people due to military conflicts alone. Cyclone Nargis in Myanmar (2009), the floods in Pakistan (2010), and the 2011 earthquake and tsunami in Japan highlight the number of devastating disasters occurring around the world in the recent past. Apart from deaths, the number of displaced communities due to these anthropogenic or natural disasters is a huge issue to tackle. Provision for safe drinking water is among the highest priorities during and after any disaster situation.
ShapeLogic creates Custom Board Design (CBD) for Firewire Surfboards, an online system that lets consumers custom tailor a high-end surfboard.
Whether it’s picking the colors and trim on a pair of high-end sneakers or choosing the right set of options for a vehicle, consumers love the idea of custom tailoring the products they order on the Web. Although most online sites offer a configure-to-order buying experience, a partnership between a computer-aided design (CAD) solution provider and a high-end surfboard company has pushed the concept a step further, delivering what may be the first consumer-oriented online engineer-to-order system.
1. GENERAL THEORY OF FLUID FLOW
Fluid flow is a transport process of unbalanced forces or stresses governed by the three primary conservation laws of momentum, energy, and mass. Conservation laws form a fundamental basis of the solution for all engineering flow problems, with the following relation applicable to the analysis of the system or control volume, where X represents the conserved quantity:
Plate Number and Resolution: Indicators of Qualitative Reliability
Introduction
Analytical quality control is the set of processes and procedures designed to produce and ensure a reliable measurement from an analytical system. The purposes of analytical quality control (as opposed to process quality control) are to demonstrate the successful performance of the analytical system (in the short term, a process known either as validation or bench-marking), and to gather the data that will allow prediction of the need for non-routine maintenance (in the long term). The goals of such a quality program is to ensure the reliability of the analyzer’s results, to maximize the analyzer’s “Up time,” and to minimize the costs associated with analyzer maintenance. The regular and frequent analysis of a quality reference material, together with trend analysis performed on the results, can be used to predict the need for preventive maintenance, non-routine maintenance, and to demonstrate which components of the analytical system need to be serviced.
The process gas chromatograph (or GC) delivers both qualitative and quantitative results, so both qualitative (retention time) and quantitative (response) axes must be tested regularly. A systematic primary study, performed during instrument commissioning, demonstrates the short-term precision of the process analyzer and will provide results to which future analytical quality control measurements can be compared.
A cell phone crashes or a Notebook laptop ceases to function. There are countless reasons why these unwanted events happen. It could stem from human body electrostatic discharge (ESD), software operating issues, an incompatible application loaded into the platform, memory errors heat or even errata in the main Central Processor Unit (CPU). This article will focus on errata in CPUs and how computer designers and other corporate personnel, such as project managers, can better manage CPUs through knowledge and tools for a specific product’s life cycle .
