With shortages of fossil energy and heavy biomass energy use occurring in both developed and developing countries, a major focus has developed worldwide on renewable energy systems. Currently, a heavy focus is on biofuels made from crops, crop residues and wood. Though it may seem beneficial to use renewable plant materials for biofuel, their use raises many concerns about major environmental problems, including food shortages and serious destruction of vital soil resources.
The world faces serious difficulties in obtaining the energy that will be needed in coming decades for a growing population, especially given the problem of climate change caused by fossil fuel use. This book presents a view of nuclear energy as an important carbon-free energy option. It discusses the nuclear fuel cycle, the types of reactors used today and proposed for the future, nuclear waste disposal, reactor accidents and reactor safety, nuclear weapon proliferation, and the cost of electric power.
Thuyết trình không dùng PowerPoint, không dùng bút laser, không quá tập trung liệt kê và giải thích sự thật là bí quyết thuyết trình hiệu quả, dù nghe có vẻ khó tin. Đừng tự làm mình lu mờ và bỏ quên cảm xúc !
Không dùng PowerPoint
Khán giả đến để lắng nghe bạn, vì vậy hãy mạnh dạn thể hiện bạn là một chuyên gia thực sự. Chắc chắn bạn không hề muốn bài thuyết trình của mình giống bất kỳ bài thuyết trình khác.
Risks pervade our life and can have an impact at individual, business and social levels. Science
and technology, medicine, transport, economics and environment are examples of fields
where various kind of risks can arise, eventually causing serious damages if not properly
controlled and managed.
If we consider economics, we can argue that enterprises need to compete in order to survive
thus incurring in several kinds of risks such as legal, operational and financial ones.
Since publication of the 5th edition there have been significant developments
in health and safety. First, the importance of the roles of directors
and managers in health and safety has been highlighted by a number of
major incidents, in some of which lives were lost. Subsequent investigation
established serious shortcomings in the commitment and support for
health and safety at very senior levels in the organisations concerned.
Lithography, the fundamental fabrication process of semiconductor devices, is playing
a critical role in micro- and nano-fabrications and the revolution in high density integrated
circuits. Traditional optical lithography (photolithography) including contact and project
photolithography has contributed significantly to the semiconductor device advancements.
Wastes are materials generated as a result of numerous anthropic activities and should
be disposed to prevent environmental pollution which aff ects human health and contributes
ecosystem degradation. Most of the environmental problems, which we are
dealing with, are a result of improper management of wastes. In particular, fresh water
resources are under serious stress throughout the globe. Water supply and water quality
degradation are global concerns.
Risk management is nowadays the way to prevent serious damage or critical
consequences from dangerous situations in everyday life. Although, for many years,
much has been done in terms of prevention and great efforts are continuously
invested into it, the concept of risk as an unforeseen event which can cause danger
or a great modification of a previous situation is still an issue to be taken into
In 1968, after many years' experience in plant operations, I was
appointed safety adviser to the heavy organic chemicals division (later
the petrochemicals division) of Imperial Chemical Industries. My
appointment followed a number of serious fires in the 1960s, and therefore
I was mainly concerned with process hazards rather than those of a
Energy demands due to economic growth and increasing population must be satisfied
in a sustainable manner assuring inherent safety, efficiency and no or minimized
environmental impact. New energy sources and systems must be inherently safe and
environmentally benign. These considerations are among the reasons that lead to
serious interest in deploying nuclear power as a sustainable energy source.
We are fortunate to live in incredibly exciting and incredibly challenging time. Energy demands due to economic growth and increasing population must be satisfied in a sustainable manner assuring inherent safety, efficiency and no or minimized environmental impact. These considerations are among the reasons that lead to serious interest in deploying nuclear power as a sustainable energy source.
SURVIVAL ON LAND POSES SOME SERIOUS CHALLENGES to terrestrial plants, foremost of which is the need to acquire and retain water. In response to these environmental pressures, plants evolved roots and leaves. Roots anchor the plant and absorb water and nutrients; leaves absorb light and exchange gases. As plants increased in size, the roots and leaves became increasingly separated from each other in space. Thus, systems evolved for long-distance transport that allowed the shoot and the root to efficiently exchange products of absorption and assimilation.
WATER PLAYS A CRUCIAL ROLE in the life of the plant. For every gram of organic matter made by the plant, approximately 500 g of water is absorbed by the roots, transported through the plant body and lost to the atmosphere. Even slight imbalances in this flow of water can cause water deficits and severe malfunctioning of many cellular processes. Thus, every plant must delicately balance its uptake and loss of water. This balancing is a serious challenge for land plants. To carry on photosynthesis, they need to draw carbon dioxide from the atmosphere, but doing so exposes them to...
Before we describe the current books, let us first briefly compare them to the previous
book in retrospective. First of all, there were some very promising directions a decade
ago that unfortunately did not meet the expectations. Molecular biology and genetics,
particularly in regards to expression of stress proteins and other pathways related to
the cell injury, have not introduced any serious breakthroughs except for the use of
ROCK inhibitors for cryopreservation of human embryonic and induced pluripotent
The world of the twenty first century is an energy consuming society. Due to increasing
population and living standards, each year the world requires more energy and new
efficient systems for delivering it. Furthermore, the new systems must be inherently safe and
environmentally benign. These realities of today’s world are among the reasons that lead to
serious interest in deploying nuclear power as a sustainable energy source.
Chắc chắn bạn không hề muốn bài thuyết trình của mình giống bất kỳ bài thuyết trình khác. Kenvin Surace –CEO của Serious Energy chia sẻ kinh nghiệm: “ Mỗi năm tôi phải thực hiện gần 50 bài thuyết trình về sản phẩm xanh và sản phẩm bền vững, tôi thường sử dụng Keynote, phần mềm dùng cho máy Mac kết hợp hình ảnh, video và các hiệu ứng chuyển đổi rất đẹp”.
The mountainous area occupies three fourth of the total area of Binh Dinh Province. The potential of landuse is very large. However, under the influence of irrational exploitation and natural disasters in the past, the land resource has declined, thus leading to the decline of forest resource. Furthermore, the increase of unused land and bare hills along with the decrease in the cultivated area seriously influenced on the ecological environment as well as the socio-economic development.
Our precious planet is in peril. The economic overshoot of ecological thresholds is seemingly
the order of the day. Yet, it is clearly not enough to lament the excessive economic use and
human domination of ecosystems and sit as if in sackcloth and ashes while romanticizing the
days gone by.
Freshwater sources and oceans have an amazing natural ability to break down some
waste materials, but not in the quantities discarded by today' s society. The overload that
results eventually puts the ecosystem out of balance.
Sometimes nature itself can create these imbalances. But most often our waterways are
being polluted by municipal, agricultural and industrial wastes, including many toxic
synthetic chemicals which cannot be broken down at all by natural processes.
The “Cost of Health Insurance” continues as the number one small-business problem, a posi-
tion it has held for 25 years. The number one ranking is reflected in all but nine of the 50
sub-categories of businesses analyzed in this survey. Four of the nine defectors, including
agriculture and transportation/warehousing, rank Energy Costs, except Electricity as their
number one problem.
The percent of small-business owners who cite the “Cost of Health Insurance” as critical
fell slightly from 56 percent in 2008 to 52 percent in 2012.