Groundwater remediation by nanoparticles has become a major interest in recent years. This report presents the ability of hexavalent chromium removal in aqueous using iron (Fe0) nanoparticles. Cr(VI) is a major pollution of groundwater and more toxic than Cr(III). Fe0 reduces Cr(VI), transforming Cr(VI) to nontoxic Cr(III). At a dose of 0.2g/l iron (Feo) nanoparticles, 100% of Cr(VI) 5mg/l was removed after only 20 minutes. The Cr(VI) removal efficiency increased with decreasing initial pH.
Securities regulators oversee Canada’s capital
markets and the advisers who sell and manage
securities traded in those markets. We strive
to protect investors from unfair, improper and
fraudulent practices while fostering a fair and
You can contact your local securities regulator
listed on page 20 to check the registration of an
individual or firm, and to find out if they have
been involved in any disciplinary actions.
The United States has been in the process of destroying
its chemical munitions for well over a decade. Initially, the
U.S. Army, guided by recommendations from the National
Research Council (NRC), decided to use incineration as its
destruction method at all sites. However, citizens in some
states with stockpile storage sites oppose incineration on the
grounds that the exact nature of the effluents escaping from
the stacks cannot be determined.
In addition to these three roles, there are other important contributors to the success of the
project: Perhaps the most important of these are Managers. While their role evolves in Scrum,
they remain critically important – they support the team by respecting the rules and spirit of
Scrum, they help remove impediments that the team identifies, and they make their expertise
and experience available to the team.
The following paragraphs present a synthesis of the development of the management control
concept in the literature. We have pointed out the existence of different trends of thought, which have
gradually evolved as organisations and markets have transformed, introducing new variables for
building efficient control systems adapted to social changes, to the process of internationalisation and
to increased market competition (Jaeger and Balinga, 1985; Neimark and Tinker, 1986).
A competitive partial-equilibrium spatial model with heterogeneous goods is constructed
to evaluate effects of the removal of tariffs, tariff-rate quotas, and sanitary regulations on
world poultry trade. The model distinguishes between ìhigh-valueî (mostly white meat)
and ìlow-valueî (mostly dark meat) poultry products and simulates the trade flows
between eight exporting and importing countries and regions. Removing all barriers
simultaneously has larger impact on trade than only removing tariffs and tariff-rate
With PHP for the World Wide Web, Fourth Edition: Visual QuickStart Guide, readers can start from the beginning to get a tour of the programming language, or look up specific tasks to learn just what they need to know. This task-based visual reference guide uses step-by-step instructions and plenty of screenshots to teach beginning and intermediate users this popular open-source scripting language. Leading technology author Larry Ullman guides readers through the latest developments including use and awareness of HTML5 with PHP.
Amphetamines are a group of drugs stimulating the central nervous system; they act on the cerebral cortex to enhance psychic activities, resulting in the removal of general fatigue and drowsiness and thus in the transient improvement of working efficiency. Their abuse causes dependence, hallucination, delusion and changes in personality. Because of such harmfulness of the drugs, their use and possession are prohibited by the Stimulant Drugs Control Law in Japan .
This module provides students with the knowledge and skills to use Group
Policy to manage user environments, and install, modify, repair and remove
software more efficiently. Students will learn to manage user environments by
configuring the Administrative Template settings, using Group Policy to run
scripts at designated times, and redirecting folders to a central location. They
will also learn how software installation policies take advantage of the
Microsoft® Windows® Installer to deliver software to computers....
TDictionary represents a generic collection of key-value pairs.
This class provides a mapping from a collection of keys to a collection of values. When you create a TDictionary object, you can
specify various combinations of initial capacity, equality operation, and initial content.
You can add a key that is associated with a corresponding value with the Add or AddOrSetValue methods. You can remove
entries with Remove or Clear, which removes all key-value pairs. Adding or removing a key-value pair and looking up a key are
efficient, close to O(1), because keys are hashed.
In section 2, there is an illustration of the source and types of industrial contaminants in
many parts of the world. It is essential to understand the characteristic of industrial
discharge in order to have an idea for ways to reduce or remove the contaminants for a
It is required to understand the impacts of industrial waste to the environment (freshwater,
seawater, land) in order to design highly efficient treatment and developing effective
Aimed at helping Java developers, Servlet/JSP developers, and J2EE developers pass the Sun Certified Web Component Developer Exam (SCWCD 310-081), this study guide covers all aspects of the Servlet and JSP technology that Sun has determined necessary. This new edition adds aspects of servlet/JSP development, such as the Expression language, and updated materials of servlets with a particular focus on using filters to make request processing more efficient.
high heats by mass removal. Their most common use is as an external heat shield to protect supersonic aerospace vehicles from an excessive buildup of heat caused by air friction at the surface. The ablative material must have a low thermal conductivity in order that the heat may remain concentrated in the thin surface layer. As the surface of the ablator melts or sublimes, it is wiped away by the frictional forces that simultaneously heat newly exposed surfaces. The heat is carried off with the material removed. The less material that is lost, the more efficient is the ablative material....
The EU needs to protect its citizens and their rights from threats and challenges and further
remove obstacles to circulation of citizens in Europe. This includes fighting crime and
corruption, controlling our external borders and ensuring the respect of the rule of law and of
fundamental rights, with the right balance between security and mobility. It also needs a well
functioning and efficient justice system to support growth, entrepreneurship and attract
Although there is no economic freedom index for metropolitan
areas, there are data available on taxes and spending. One of the most
important components of the various economic freedom indices is
the tax burden. Taxes remove resources from private decision-
makers and put them in the hands of elected officials and bureau-
crats. The latter face much weaker incentives to use those resources
efficiently and lack the information to be able to do so. As a result,
jurisdictions with higher tax burdens will tend to have less prosper-
The outer layer had significantly higher SG and bending properties than the
inner layer. The SG varied along the culm height. The top portions had consistently
higher SG than the base. Bending strength had a strong positive correlation with SG. In
order to industrially use bamboo strips efficiently, it is advisable to remove minimal
surface material to produce high strength bamboo composites. Compression properties
parallel to the longitudinal direction was significantly higher than perpendicular to the
Limited floor space and smaller fiber counts often
dictate that multiple pieces of communications
apparatus share common equipment racks. The
FL1000 is designed to be mounted within standard
19" or 23" EIA equipment racks. Standard flush
mount capability also makes this panel well-suited
to cabinet installations.
The left/right orientation of the individual angled
adapters and retainers allows the easy exit of the
jumpers from the panel. A removable rear door on
the 24 termination panels allows efficient access the
interior of the panel for the routing and termination
of fiber cables.
There are a vast number of technologies and practices that can be employed to reduce
GHG emissions for the purpose of generating offsets. In addition, GHG emissions can be
offset through certain kinds of land use and forestry practices that remove CO2 from the
atmosphere. According to a survey from 2006, projects involving land use and forestry
practices are in fact the most common type being funded by voluntary offset purchases.
The next most common type of project involves renewable energy production, followed
by demand-side energy efficiency improvements (Table 1).
Copenhagen Airport is more than just an efficient traffic hub - much
more. It is also Denmark’s window to the world. For this reason,
Copenhagen Airports A/S wants to display the very best Denmark
and the rest of Scandinavia has to offer in the fields of architecture,
design and fine art. With its beautiful surroundings and richness in
experiences for the passenger, the airport removes some of the
tedious waiting time inherent in travelling and serves as a stunning
business card for Denmark....
A sewage treatment authority received an 1 l-pound credit on its discharge
permit for 22 pounds of phosphorus removed from nonpoint sources when
the authority installed sewers in a small development that had been using
septic tanks. Incentives for additional trades were eliminated because
population growth slowed and the treatment plants signiikantly improved
the operating efficiency of their existing treatment equipment. These ...