24 results found for biology

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00:29:00

The Killer Defence

by Peter Doherty
The Killer Defence
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1460 views
Rating:

Immune surveillance by virus-specific CD8+ cytotoxic T lymphocytes (CTLs), or killer T cells, has long been known to be central to the control of acute infections and some cancers, though the role of CTL memory in the rapid recall of immune protectio....

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00:39:00

Role of Nitric Oxide and Cyclic GMP in Cell Signaling and Drug Development

by Ferid Murad
Role of Nitric Oxide and Cyclic GMP in Cell Signaling and Drug Development
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1778 views
Rating:

Nitric oxide research has grown rapidly with about 150,000 research publications describing its biological effects. It is an important messenger molecule that affects most tissues and biological processes. Many effects of nitric oxide are mediated by....

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00:30:00

Ion Channels: Their Discovery, their Function and their Role in Diseases

by Erwin Neher
Ion Channels: Their Discovery, their Function and their Role in Diseases
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1559 views
Rating:

The concept of bioelectricity emerged in the late 18th century, based on the experiments of Galvani and Volta. Sixty years ago, Hodgkin and Huxley showed that the nerve impulse is a result of permeability changes of the nerve membrane. This raised th....

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00:30:00

The Origin of Reversible Protein Phosphorylation as a Regulatory Mechanism

by Edmond Fischer
The Origin of Reversible Protein Phosphorylation as a Regulatory Mechanism
for 18-22 and upwards,
Lectures | 18-22 and upwards | 8 years ago | 1658 views
Rating:

Reversible protein phosphorylation can be considered one of the most prevalent mechanism by which eukaryotic cellular events are regulated. It is directly involved in numerous pathological conditions, and bacterial and viral diseases. This process wa....

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00:04:00

The Science of Chillies

by Various Presenters
The Science of Chillies
for 14-19 and upwards,
Highschool presentations | 14-19 and upwards | 8 years ago | 1864 views
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These things are HOT! - and have a variety of biochemical effects.

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00:47:00

Nanomaterials as growth effectors and imaging agents in rice plants and its scope in plant science

by Remya Nair
Nanomaterials as growth effectors and imaging agents in rice plants and its scope in plant science
for 18-22 and upwards,
Postgraduate presentations | 18-22 and upwards | 10 years ago | 2169 views
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Ramya talks about the ways in which nanomaterials can affect rice-plant growth and also be used for imaging purposes.  This talk was part of her PhD thesis defence.

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00:56:00

Prospects of extremophiles and sulfated polysaccharides in bionanotechnology and biomedicine

by Sreejith Raveendran
Prospects of extremophiles and sulfated polysaccharides in bionanotechnology and biomedicine
for 18-22 and upwards,
Postgraduate presentations | 18-22 and upwards | 10 years ago | 1848 views
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During his PhD thesis defence lecture, Sreejith looks at some novel prospects for biomedicine.

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00:58:00

Investigating the ribosome inactivating protein-curcin, as a protent therapeutic candidate in nano-drug delivery systems

by Mohamed Seikh Mohamed
Investigating the ribosome inactivating protein-curcin, as a protent therapeutic candidate in nano-drug delivery systems
for 18-22 and upwards,
Postgraduate presentations | 18-22 and upwards | 10 years ago | 1653 views
Rating:

During the defence of his doctoral thesis, Mohamed describes his work and investigation of curcin, the ribosome-inactivating protein and the ways it may be used in the treatment of cancer.

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00:33:00

Synthesis and characterization of targeted nano-regulators as potential therapeutic agents for controlling Alzheimer’s disease

by Anila Mathew
Synthesis and characterization of targeted nano-regulators as potential therapeutic agents for controlling Alzheimer’s disease
for 18-22 and upwards,
Postgraduate presentations | 18-22 and upwards | 10 years ago | 1456 views
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In her PhD dissertation lecture, Anila describes the use of nano-particles in the treatment of Alzheimer's Disease.

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00:47:00

From bench to bedside: KATP channels and neonatal diabetes

by Frances Ashcroft
From bench to bedside: KATP channels and neonatal diabetes
for 14-19 and upwards,
Lectures | 14-19 and upwards | 10 years ago | 1482 views
Rating:

Whether you eat a whole box of chocolates or fast for the day, the pancreatic beta-cells ensure that your blood glucose level remains relatively constant by regulating the release of insulin from the pancreatic beta-cells. Diabetes results when insul....

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01:04:00

Molecular chaperones: how cells stop proteins from misbehaving

by R. John Ellis
Molecular chaperones: how cells stop proteins from misbehaving
for 18-22 and upwards,
Lectures | 18-22 and upwards | 11 years ago | 2567 views
Rating:

Proteins are the action molecules of all cells, and to function properly, protein chains must fold and assemble correctly. But each chain of every protein runs the risk that it will combine with one or more identical chains to form nonfunctional aggr....

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00:05:00

Retinoblastoma

by Kyla McKay
Retinoblastoma
for 18-22 and upwards,
Lectures | 18-22 and upwards | 12 years ago | 1553 views
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Kyla discusses an overview of the disease, the most common method in which it is diagnosed, as well as the major chemotherapeutics used to treat it.

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00:10:00

Bioenergetics of Cancer Cells

by Elda Rueda
Bioenergetics of Cancer Cells
for 18-22 and upwards,
Lectures | 18-22 and upwards | 12 years ago | 1758 views
Rating:

A brief summary from the literature about cancer cells' metabolism; 1) the major pathways cancer cells use to generate energy and macromolecules efficiently and rapidly and 2) the enzymes cancer cells up-regulate to control those pathways.

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00:08:00

Lapatinib treatment for HER2 Positive Breast Cancer

by Abir Kahn
Lapatinib treatment for HER2 Positive Breast Cancer
for 18-22 and upwards,
Lectures | 18-22 and upwards | 12 years ago | 4194 views
Rating:

Discussion on the background information, etiology, and treatment of HER2 positive breast cancer.

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00:06:00

The Science of Love

by Maeghan Gibson
The Science of Love
for All ages,
Undergraduate presentations | All ages | 13 years ago | 1703 views
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A brief look into the physical, biological, chemical and behavioral attributes that humanity shares with other members of the animal kingdom focusing on studies done on Jamaican dancers, Belding's ground squirrels, human MHC and others.

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01:00:00

The great ideas of biology

by Paul Nurse
The great ideas of biology
for 14-19 and upwards,
Lectures | 14-19 and upwards | 13 years ago | 1560 views
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Three of the ideas of biology are the gene theory, the theory of evolution by natural selection and the proposal that the cell is the fundamental unit of all life. A fourth idea is that the organization of chemistry within the cell provides explanati....

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00:11:00

The breakdown of macro-nutrients

by D'Ondre Shine
The breakdown of macro-nutrients
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1675 views
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Presentation on the breakdown of macro-nutrients. The chemical decomposition of macronutrients, which includes carbohydrates, proteins, and lipids.

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00:10:00

Anti-oxidants

by Ryan Hill
Anti-oxidants
for 14-19 and upwards,
Lectures | 14-19 and upwards | 14 years ago | 1830 views
Rating:

Anti-oxidants and their importance in diet

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01:00:00

The new biology of ageing

by Linda Partridge
The new biology of ageing
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1328 views
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Research into ageing has been rejuvenated by the discovery of mutations in single genes that extend the lifespan of laboratory animals. Some of the signalling pathways involved, particularly the insulin/Igf-like pathway, have effects on lifespan acro....

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01:16:00

A molecular window into speech and language

by Simon Fisher
A molecular window into speech and language
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1852 views
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Our capacity for complex speech and language remains one of the most intriguing aspects of being human. It has long been suspected that some answers to this enigma will be found buried within the genome. With recent advances in genetic technologies, ....

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01:08:00

Plant and animal communication

by John Pickett
Plant and animal communication
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1396 views
Rating:

Organisms of all kinds use signals comprising minute amounts of natural chemicals. The exploitation of semiochemicals is demonstrated with dramatic success in the management of pests and parasitic weeds in resource-poor East African cereal farming.

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01:08:00

From proteins to drugs

by Mark Pepys
From proteins to drugs
for 18-22 and upwards,
Lectures | 18-22 and upwards | 14 years ago | 1383 views
Rating:

The normal proteins which circulate in human blood are either known or presumed to have beneficial functions. However normal immunity and inflammation proteins can cause or exacerbate disease in addition to helping to resist infections.

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00:59:00

Nuts and Bolts of the Mind

by Susan Greenfield
Nuts and Bolts of the Mind
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 1715 views
Rating:

Susan Greenfield conducts us on an exhilarating tour of brain. A brief fascinating historical introduction is followed by a discussion on our present, admittedly limited, understanding of this amazing organ. Members of the group handle (and dissect) ....

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00:14:00

A biochemist investigating Parkinson’s Disease

by Birgit Liss
A biochemist investigating Parkinson’s Disease
for 14-19 and upwards,
Lectures | 14-19 and upwards | 15 years ago | 2010 views
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Dr Liss investigates Parkinson's disease with genetics

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