Understanding the principles and implications of pressure measurement is vital in anaesthesia. Here, in a similar structure to previous chapters we outline the basic physical principles of pressure, the variety of ways that it can be measured in clinical practice and the relationships with other physical principles. There is then focussed material on blood pressure measurement, through invasive and non-invasive techniques, on resonance and damping in pressure measurement systems, and on the measurement of intracranial pressure. The chapter finishes by discussing cardiac output measurement in clinical practice.

This chapter is focussed on the International Standard of Units (SI) and their relevance to anaesthesia. This is a common exam question and it is important to understand the relationship between base SI units and other derived units. The chapter relates pressure to force, and clarifies the different measures of pressure including how they can be interchanged.

The key question in mechanical ventilation is whether invasive or non-invasive is the option being applied to the individual patient. In order to answer this question, it is necessary to recognize the pathophysiology and understand which physiological system has failed and needs to be supported. In this chapter we outline the optimal treatment options for respiratory insufficiency type 1 and 2. The reader will be made familiar with the basic principles of non-invasive and invasive ventilation. The aim is to arbitrate an overview as well as basic flowchart for the treatments depending on which of the aforementioned respiratory insufficiencies are to be treated. The chapter also comprises a quick guide to the initial ventilator settings.

The current strategic environment can be characterised as a return to great power competition, centred on the Indo-Pacific region, within an environment of post-pandemic climate change. The ’region is in the midst of the most consequential strategic realignment since the Second World War’, and the confluence of these characteristics has resulted in a major step-change for Australia’s strategic policy and has significantly increased expectations of the Australian Defence Force. For the ADF, the force generation and force employment requirements to effectively shape, deter and respond within a ’competitive and contested’ region increase the demand signal on the force. For the Australian Army, accelerated warfare requires land forces ’to be ready to do more tasks, fight at all ranges, and enable the joint force in every domain’.

Manipulation is pervasive in our lives, yet it is not well understood. Specifically, we lack a wide philosophical theory of manipulation. Such a theory will successfully answer two main questions: a question about the precise meaning of “manipulation,” and a question about its moral status. Prior to presenting a novel theory of manipulation in the following chapters, Chapter 1 offers an overview of the state of the art of philosophical thinking on manipulation. The semantic field of manipulation is constructed by three main concepts: rational persuasion, deception, and coercion. Manipulation cannot, however, be understood adequately on the basis of any one of these concepts, and there is no good theory that accounts for manipulation using a combination of them. The chapter reviews the many difficulties left open by notable attempts to provide an account of the concept of manipulation. The criticisms of those attempts raise the deeper suspicion that perhaps manipulation is not to be captured by a definition at all.

Half of all mental health problems start by the age of 15 and the teenage and young adult years are particularly difficult for girls with high and increasing rates of anxiety, depression and self-harm. Many different factors contribute, including social media, peer pressures, focus on appearance, friends, relationships, schoolwork and, as Everyone’s Invited has recently highlighted, personal safety. There is tremendous pressure to conform with the expectations of others. Attitudes to women and girls seem to have gone into reverse during the author’s lifetime. It is too simplistic to view the problems of young women as a simply a ‘lack of self-esteem’. The difficulties they face in society are consistently underestimated and not taken seriously. Fast access to therapy is crucial. Bullying must be addressed effectively. Sexist and mysogynistic attitudes in school must be challenged and, given the easy access now to pornography, the issues of consent should addressed head on by both parents and schools. Using the example of Everyone’s Invited, women and girls need to reach out and support each other. The personal is still political.

Of the two parallel lives, it is Hannibal who used an elected position to carry through political and economic reforms unwelcome to the ruling oligarchy, whereas Scipio was quiet and accepting of the status quo. A story that Hannibal was prosecuted after Zama is not believable. He urged acceptance of the peace terms after Zama, manhandling an opposing speaker; he apologized for this, pleading long absence from civil life. As elected ‘praetor’ (sufete), he antagonized powerful citizens. His summons of a ‘quaestor’ (financial official) was refused. Scipio, soon after, also had trouble with a recalcitrant quaestor. Hannibal’s main political reform was to end life tenure of the ‘judges’. Economically, perhaps using skills developed when managing the logistics of his Italian campaign, he calculated Carthage’s revenues and ended embezzlement. The unpopularity with the ruling class so generated, and Roman diplomatic pressure, caused him to flee permanently. Carthage’s second-century economy is evaluated.

The NHS, the great survivor of the post-war consensus, faced a period of considerable uncertainty. This chapter will examine if, and how, the Conservatives have changed the NHS in the face of economic pressures, technological advances, demographic change, changing expectations and the pandemic. Any analysis of the health policy of a government is incomplete without examining the wider state of social care and its relation to healthcare policy.

There are many different varieties of automatic weather stations (AWSs) available, and a huge range of different applications for them. This chapter suggests a structured approach to specifying AWS features to meet any particular requirement, provides a short guide to AWS products and services available (from consumer brands to sophisticated professional systems capable of unattended operation in remote areas) and offers guidance in selecting one or more options from the multiplicity of product offerings on the market.

Einsteins field equations are derived and discussed. It is argued that the Einstein tensor is proportional to the energy-momentum tensor and the constant of proportionality is derived by demanding that Newton’s Universal Law of gravitation be recovered in the non-relativistic limit. The modification of Einstein's equations when a cosmological constant is introduced is also presented.

This chapter introduces the mechanical property of a fluid when it is at rest. In the absence of shear force, fluid is balanced between pressure force and body force. A universal differential equation is derived to describe the pressure distribution in a static fluid. This equation, can be called hydrostatic equilibrium equation, is the key to solve any fluid static problems. Two typical situations are then discussed as applications of the hydrostatic equilibrium equation, one is static fluid under the action of gravity, the other is fluid under the action of inertial forces. Differences and similarities of fluids and solids in the transfer of force are discussed in the end. Atmospheric pressure at different heights is calculated in the “Expanded Knowledge” section.

Dia, para- and ferromagnetism of rocks and minerals correspond to the wide range of magnetic susceptibility. Atomistic models of dia- and paramagnetism are considered. The Langevin function describes magnetic saturation of paramagnetic particles, whose magnetic susceptibility depends on temperature according to the Curie–Weiß law. Ferromagnetism, antiferromagnetism, ferrimagnetism and canted antiferromagnetism are considered. Ferromagnetic minerals are characterized by magnetic domains whose boundaries experience Barkhausen jumps during magnetization-demagnetization. Magnetic domains are separated by Bloch walls. Koenigsberg’s ratio, i.e. the ratio of induced and remanent magnetizations, depends on the shape demagnetization factor a The concept of locking temperature based on the magnetization relaxation time is used to reconstruct paleomagnetic fields, i.e. in the case of magnetic stripes of mid-oceanic ridge basalts. Principles of chemical, pressure and detrital-remanent magnetization. Focus Box 10.1: Magnetic field of a small dipole. Focus Box 10.2: Brillouin function. Focus Box 10.3: Electron shells, orbitals and orbital hybridization. Focus Box 10.4: Extended Weiss model.