Xem 1-20 trên 413 kết quả Organic forms
  • Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, composition, reactions, and preparation (by synthesis or by other means) of carbon-based compounds, hydrocarbons, and their derivatives. Organic compounds are structurally diverse. The range of application of organic compounds is enormous. They either form the basis of, or are important constituents of, many products including plastics, drugs, petrochemicals, food, explosives, and paints....

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  • To appreciate the complexities of the element mercury, it is enlightening to review the role of Mercury — the god — in Greek, Roman, and Celtic mythology. Both the element and the mythological god assume complex and ever-changing forms and functions. In Greek mythology, for example, at the height of Aegean civilization around 1600 BCE, Mercury (or Hermes as the Greeks called him) was known as the god of shepherds and animal fertility (Aldington and Ames, 1968).

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  • The past twenty-five years have been witness to celebration of all things organizational in organization and management research. Profound changes in both the global economy and information technology produced new organizational forms and pushed us to focus on competitiveness and wealth creation. To be sure, anyone who set foot in an organization knew that people matter, but our scholarly attention was diverted.

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  • The same amount of water has been present on our planet for about 4 billion years, since shortly after the Earth was formed. Since then it has cycled through evaporation, condensation, precipitation and surface runoff multiple times. Water scarcity as an abiotic factor ranging from moderate to severe stress levels, accompanied by loss of moisture in the soil, is extremely hard for most organisms to cope with, particularly terrestrial plants and their food-chain dependents.

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  • This part of the book is concerned with the inter-related issues of how BP and signals intelligence were made over the course of WW2. The focus is primarily upon various forms of organizational structuring, broadly conceived, and the emphasis on ‘making’ indicates that, in line with the general approach outlined in the introduction to the book, I will seek to explore some of the processes of ‘organizing’ which lie beneath the production of ‘organization’.

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  • Hydrogen peroxide is a strong oxidant that can be injected into a contaminated zone to destroy petroleum contaminants. When injected to groundwater, hydrogen peroxide is unstable, and reacts with organic contaminants and subsurface materials. It decomposes to oxygen and water within hours of its introduction into groundwater generating heat in the process. Peroxide is typically shipped to a remediation site in liquid form at dose concentrations ranging from five percent to 50 percent by weight.

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  • The subject of this book is the National Basketball Association (NBA), which, for various reasons, has evolved into one of the most competitive, prominent, and successful organizations in the history of American team sports.

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  • After attending lectures, reading the text and working assigned problems related to this chapter, students will have acquired the following knowledge and abilities: Know the origin of the unusual acidity of H α atoms located between two carbonyl groups, know the relative acidity of H α in aldehydes, ketones, esters, and 1,3-dicarbonyls; given starting material and reaction conditions, predict the major product that will form;...

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  • Chapter 1 introduction and review the organic chemistry. The goal is for you to learn: Review concepts from general chemistry that are essen-tial for success in organic chemistry, such as the electronic structure of the atom, Lewis structures and the octet rule, types of bonding, electronegativity, and formal charges; predict patterns of covalent and ionic bonding involving C, H, O, N, and the halogens. Identify resonancestabilized structures and compare the relative importance of their resonance forms.

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  • Chapter 2 - Structure and properties of organic molecules. To understand these aspects of molecular structure we need to consider how the atomic orbitals on an atom mix to form hybrid atomic orbitals and how orbitals on different atoms combine to form molecular orbitals. In this chapter, we look more closely at how combinations of orbitals account for the shapes and properties we observe in organic molecules.

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  • Fresh root of Vietnamese carrot (Daucus carota L.) has been employed as a biocatalyst in the asymmetric reduction of prochiral ketones and the enantioselective hydrolysis of racemic esters. In the previous reaction, (S)-alcohols were formed in quantitative yield with highly enantiomeric purity (ee > 93%). However in the latter, this biocatalyst presented a poor enantioselectivity (ee < 50%). Besides, the selectively reducing capability of carrot on a conjugated aldehyde and a racemic mixture of aldehyde was also investigated.

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  • This chapter describe the proprietorship, partnership, and corporate forms of business; identify the differentiating characteristics of a limited liability company (LLC); describe the benefits, risks, and basic tax aspects of various organizational forms; discuss the use of patents and trade secrets to protect intellectual property;...

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  • Chapter 11 - Reactions of Alcohols. Alcohols are important organic compounds because the hydroxyl group is easily converted to almost any other functional group. In Chapter 10, we studied reactions that form alcohols. In this chapter, we seek to understand how alcohols react and which reagents are best for converting them to other kinds of compounds.

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  • When we consider the discoveries connected with the Stone age as a whole, we are struck with the immense numbers of weapons of every kind and of every variety of form found in different regions of the globe. The Roman domination extended over a great part of the Old World, and it lasted for many centuries. Everywhere this people, illustrious amongst the nations, has left tokens of its power and of its industry. Roman weapons, jewelry, and coins occupy considerable spaces in our museums; but numerous as are these relics of the Romans, they are far inferior in number...

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  • Would you be enticed by an ad for a coat that is waterproof, stretchable, washable, and permanent-press, that automatically repairs small cuts, rips, and burns? How about one that’s guaranteed to last a lifetime? Sounds too good to be true, but you already have such a coat-your skin. The skin and its derivatives (sweat and oil glands, hairs, and nails) make up a complex set of organs that serves several functions, mostly protective. Together, these organs form the integumentary system.

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  • Chapter 35: Forms of business organization. What are the major forms of business organization, and what are the differences among them? What are the specialized forms of business organization? What is a franchise?

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  • In early 2001 I began using Microsoft’s .NET Framework for a project I was working on with a small startup company. Unfortunately, the winds changed and I found myself with more free time than I would normally hope for. So when Manning Publications asked me if I would contribute to a book on programming with the .NET Framework, I welcomed the idea. As events unfolded, I found myself with some fairly strong opinions about how such a book should be organized, and offered up a proposal to write a solo book on programming Windows Forms applications.

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  • A lot of verbs can be changed to adjectives by the addition of a suffix (e.g., -able, -ous, -ful) to the end of the word. Some verbs can have more than one adjective form (e.g., bore = boring or bored). Sometimes you may need to remove or change a letter at the end of the word before adding a suffix (e.g. vary = variable)

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  • Biology is a natural science concerned with the study of life and living organisms, including their structure, function, growth, origin, evolution, distribution, and taxonomy.[1] Biology is a vast subject containing many subdivisions, topics, and disciplines.

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  • An ecosystem is a group of animals and plants living in a specific region and interacting with one another and with their physical environment. Ecosystems include physical and chemical components, such as soils, water, and nutrients that support the organisms living there. These organisms may range from large animals to microscopic bacteria. Ecosystems also can be thought of as the interactions among all organisms in a given habitat; for instance, one species may serve as food for another. People are part of the ecosystems where they live and work.

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