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Histology, microscopy, anatomy and disease
Science, Maths & Technology

Histology, microscopy, anatomy and disease

...classes of lymphocyte appear virtually identical in size and shape, but they can be distinguished through staining according to their surface markers. Similarly, in Figure 7 some nerve cells (neurons) are clearly visible among other cells in the cortex of the brain as a result of this type of staining technique. [Described image] Figure 7 Neurons in the cortex of the...
View course Histology, microscopy, anatomy and disease
Level 1: Introductory 12 hrs
Animals at the extremes: the desert environment
Nature & Environment

Animals at the extremes: the desert environment

...De Martonne's aridity index has been used widely and is calculated from the formula: I a = aridity index P = mean annual precipitation/mm T = mean annual temperature/°C Note that values for average precipitation can be misleading because in arid deserts, especially hyper-arid desert, there are many years that have no rainfall at all. Certain coastal deserts such as the...
View course Animals at the extremes: the desert environment
Level 2: Intermediate 14 hrs
Blood and the respiratory system
Science, Maths & Technology

Blood and the respiratory system

...De-oxygenated blood from the systemic tissues is carried to the lungs by the pulmonary arteries and has a PO2 of 40 and a PCO2 of 45 millimetres of mercury. As the blood enters the alveoli, the higher PO2 in the lungs drives oxygen shown in red out of the alveoli and into the blood. At the same time, the slightly higher PCO2 in the blood drives carbon dioxide, shown in...
View course Blood and the respiratory system
Level 2: Intermediate 10 hrs
Studying mammals: Return to the water
Nature & Environment

Studying mammals: Return to the water

...class Mammalia. Many of these are adaptations to a life on land. For example: Mammals give birth to young at a relatively advanced stage of development and feed their young on milk. Most mammals have hair, or fur, covering part or all of the body. Mammals have a high metabolic rate and maintain a relatively high and constant body temperature, irrespective of the...
View course Studying mammals: Return to the water
Level 1: Introductory 10 hrs
Additive manufacturing
Science, Maths & Technology

Additive manufacturing

...classes of synthetic resins, thermoplastic resins, which can be softened and reformed by heating, and thermosetting resins, which remain in the solid state when heated. Natural organic resins are extracted as fluid secretions from trees, particularly pine and firs. They are commonly used in medical balsams and toiletries such as soap. Synthetic resins, sometimes mixed...
View course Additive manufacturing
Level 3: Advanced 8 hrs
Getting started with Chinese 2
Languages

Getting started with Chinese 2

...class learning Chinese with Chinese words on the board. Select the answer for Question 1b here [Described image] Figure 2 Tā kàn diànshì. 她 看 电视。 True False a. True b. False The correct answer is a. Discussion True. This is a drawing of a girl watching TV. Select the answer for Question 1c here [Described image] Figure 3 Dàwèi xiě hànzì. 大卫写 汉字...
View course Getting started with Chinese 2
Level 1: Introductory 8 hrs
Introduction to operations management
Money & Business

Introduction to operations management

...classed as ‘non-operations’ will still contain processes with outputs, each with corresponding processes. For example, a finance manager has outputs such as financial reports, and a HR manager has outputs such as recruited or trained staff. It is important, therefore, that you apply the concepts explored in this course as much as you can to your own situation. Review...
View course Introduction to operations management
Level 2: Intermediate 6 hrs
10 years of The Bottom Line
Money & Business

10 years of The Bottom Line

...de-regulated online currency; but TripAdvisor and social recommendations - and the implications, both positive and negative, for all types of businesses - seem to be sticking around for the long term. Wearable technology is one of the big developments at the moment, but will it translate to the mainstream or stay strictly for the geeky gadget- fan niche? Apps are booming...
View article 10 years of The Bottom Line
Article 5 mins