Phase separation in solid solution upon cooling: laser beam projection
As video 58, but filmed looking into the laser light after it has passed through the vial (i.e. the video is of the laser beam as projected onto a screen): The vial contains a mixture of cyclohexane and aniline cooling from 35°. When the critical temperature is reached and the mixture goes from a single phase to two phases, the spot of light on the screen is disrupted as the phases separate. The spot "flickers" and then becomes totally diffuse. It will eventually form a single spot ag
Phase separation in solid solution upon cooling: vial projection
The vial containing a mixture of cyclohexane and aniline cooling from 35°, has been filmed perpendicular to the direction of the laser light (left to right). When the critical temperature is reached and the mixture goes from a single phase to two phases, the spot of light on the screen is disrupted as the phases separate. The spot "flickers" and then becomes totally diffuse. It will eventually form a single spot again once the transition is completed and the two chemicals have complet
Gene manipulation in plants
Genetic manipulation of crops is an issue of great current interest and controversy. This unit covers some of the basic science that underpins the debate and examines the hotly contested case study of the development of ‘Golden Rice’. By looking at the science 'behind the headlines' you will acquire a clearer idea of both what is possible in GM science and what may be desirable.
Cell signalling
This unit explains the general principles of signal transduction and specifically, how even the simplest organisms can detect and respond to events in their ever-changing environment.
1 The circumstances of separation
Most children live with a parent or parents, with siblings and relatives and with family pets in the family home, but many children do not live with their parents or even with their families. They may live elsewhere through choice or necessity, but whatever the event that causes them to move away from their parents or families, the significance of moving in a child’s life can be considerable. This material will be of interest to anyone who supports children who live away from their families in
6.6 Risks
The management of processes or operations is the very essence of any kind of business enterprise, and it is critically important that they are designed and managed well. This course taster uses case studies and models to illustrate the importance of effective operations management and outlines the steps to preparing your own operations proposal.
Parents' responses to the risks
A decade ago, the possibility of a link between the MMR vaccine and autism hit the media. Fear of the vaccine spread rapidly and, despite an almost unanimous consensus that the claim was unfounded, still persists today. In this unit, we’ll examine why this controversy took on such a life of its own and why parents still agonise about the vaccine.
1.5 BSE and risks to human health: vCJD
The furore surrounding the so-called ‘mad cow’ diseases is an important and controversial episode of recent years. Although it peaked several years ago, the topic is still of great medical significance, influencing the way members of the public think about and experience science and scientists.
1.5 BSE and risks to human health: vCJD
The furore surrounding the so-called ‘mad cow’ diseases is an important and controversial episode of recent years. Although it peaked several years ago, the topic is still of great medical significance, influencing the way members of the public think about and experience science and scientists.
3.7 Hair cell tuning
Hearing is a familiar and important human sense that is a topic naturally of interest to those who are curious about human biology. This unit will enable you to relate what you read to your own sensory experiences – and indeed many of the questions asked have exactly that function. This unit will be best understood by those with some biological understanding.
1 Genetic manipulation of plants and GM crops: an introduction
Genetic manipulation of crops is an issue of great current interest and controversy. This unit covers some of the basic science that underpins the debate and examines the hotly contested case study of the development of ‘Golden Rice’. By looking at the science 'behind the headlines' you will acquire a clearer idea of both what is possible in GM science and what may be desirable.
2.3 From infected cells to transgenic plants
Genetic manipulation of crops is an issue of great current interest and controversy. This unit covers some of the basic science that underpins the debate and examines the hotly contested case study of the development of ‘Golden Rice’. By looking at the science 'behind the headlines' you will acquire a clearer idea of both what is possible in GM science and what may be desirable.
1.2 Discovering the risks
Diabetes is an increasing problem among both adults and children. This unit looks at the way diabetes is managed once it has been diagnosed in order to reduce the risk of further complications. You will look at the role of each member of the team involved in the diabetes annual review and look at the risk factors involved with certain diabetes complications.
1.2 Nucleic acids: genetic, functional and structural roles in the cell
This unit helps you understand the properties of nucleotides and how they contribute to secondary and tertiary structures of nucleic acids at the molecular level. You will learn about the different composition and roles of nucleic acids in the cell, their interactions with each other and the use of ribozymes, aptamers, antisense and hybridization as tools in molecular research. The unit covers the function of DNA packaging within the cell, the interactions between the DNA double helix and the nu
5 Where does transcription occur in the cell?
This unit explores how information contained in DNA is used, explaining the flow of information from DNA to RNA to protein. Also introduced are the concepts of transcription (as occurs between DNA and RNA) and translation.
Plants as medicines
To be able to understand the importance of the environment for our health, we need to know a little about the interdependence between environment and humankind. This unit will look at interactions between plants, animals and the physical and chemical environment, as well as considering ways in which humans have altered, and are altering this environment. These changes have health implications that are not always immediately obvious. Frequently, we initiate changes that are going to have their ef
Algae, Mosses, Lower Vascular Plants
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Large sand volume barrier islands: Environmental processes and development risks
This Carolina Environmental Diversity Explorations "virtual field trip" explores the nature and structure of barrier islands with large sand volume, on which built structures are relatively well insulated from hurricane damage.
Small sand volume barrier islands: Environmental processes and development risks
This Carolina Environmental Diversity Explorations "virtual field trip" explores the nature and structure of barrier islands with small sand volume — only a few small dunes and no sandy ridges between the beach and the salt marsh. Built structures on these islands are highly susceptible to damage from hurricanes. This trip provides high-resolution photographs of two such islands, Masonboro (which has not been developed) and Topsail (which has been developed). Its companion field trip, Large Sa
Cell Biology Improvement Drive
Wikiversity participants with an interest in Cell biology can participate in the "Cell biology improvement drive". This Learning Project is a service-oriented Wikiversity project devoted to improvement of Cell biology articles at Wikipedia and development of the Wikibooks textbook about Cell biology. Participants in the project can become involved in the construction of new Wikiversity pages that are concerned with Cell biology. This "Cell biology improvement drive" also includes improvement of
