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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.
The osmotic swelling of an n-butylammonium vermiculite in a 0.1 M solution of n-butylammonium chloride has been studied as a function of temperature and hydrostatic pressure by neutron diffraction. On application of a pressure of 1050 bar the vermiculite swelled macroscopically at 20°C, the c-axis spacing changing from 19.4 to 126 Å. The phase transition was completely reversible with respect to both pressure and temperature, and a complete study of the temperature-pressure phase diagram was made at pressures as high as 2000 bar. The heat capacity change with temperature across the swelling transition was measured at atmospheric pressure, and the enthalpy and entropy of the change from crystalline to osmotic phases were found to be, respectively, 5.2 J/g and 0.0183 J/K·g of dry clay. The combination of the entropy change with the gradient of the pressure-temperature phase boundary gave the volume change accompanying the transition. The total volume of the swollen phase was less than that of the crystalline phase plus the appropriate amount of solution, corresponding to a fractional decrease of about 0.1% in the water volume from bulk solution to between the plates.
The dehydration temperature of K-montmorillonite, obtained by ion exchange of a Na-mont-morillonite, was determined at pressures to 2 kbar, using high-pressure differential thermal analysis. Dehydration reactions were found at about 50° and 100°C above the liquid-vapor curve of water. At pressures above the critical point of water the dehydration temperatures increased only slightly. The temperature of the first dehydration reaction is 10°C higher than for Na-montmorillonite, indicating a slightly greater stability of the hydration shell around the potassium interlayer cation. The second dehydration reaction occurs at a slightly lower temperature. The data were used to determine the enthalpy of the dehydration ΔH(dh) and the bonding enthalpy of the interlayer water ΔH(iw) at 1 atm. The first dehydration reaction of the K-exchanged montmorillonite has a ΔH(dh) = 46.16 ± 0.06 kJ/mole and a ΔH(iw) = 7.8 ± 0.5 kJ/mole, whereas for the second reaction, ΔH(dh) = 56.7 ± 2 kJ/mole and ΔH(iw) = 19.8 ± 2 kJ/mole. These values compare with a ΔH(dh) = 46.8 ± 0.3 kJ/mole and a ΔH(iw) = 7.8 ± 0.5 kJ/mole for the first dehydration reaction of the Na-montmorillonite and a ΔH(dh) = 62.9 ± 2 kJ/mole and ΔH(iw) = 27.1 ± 2 kJ/mole for the second dehydration.
A high-pressure, high-temperature cell was used to monitor the basal X-ray powder diffraction spacing of Na-saturated Cheto montmorillonite in contact with NaCl solutions at temperatures as high as 200°C and hydraulic pressures as high as 6700 psi (456 bar). The 003 and 005 reflections were used to determine d(001) of the smectite. The montmorillonite, in 1 molal NaCl, exhibited a d(001) of 15.4 Å at room temperature and pressure and a d(001) of 15.6–15.7 Å under 500–2200 psi hydraulic pressure. The basal spacing of the clay in 5 molal NaCl was 15.2 Å and 15.33–15.45 Å at 1 bar and 750–6700 psi (53–456 bar), respectively. Because no changes in the basal spacing with increasing temperature to 200°C were detected in any of the experiments, this Na-smectite probably exists as a two-water-layer complex under diagenetic conditions.
The first part of this work is devoted to the study of higher derivatives of pressure functions of Hölder potentials on shift spaces with finitely many symbols. By describing the derivatives of pressure functions via the central limit theorem for the associated random processes, we discover some rigid relationships between derivatives of various orders. The rigidity imposes obstructions on fitting candidate convex analytic functions by pressure functions of Hölder potentials globally, which answers a question of Kucherenko and Quas. In the second part of the work, we consider fitting candidate analytic germs by pressure functions of locally constant potentials. We prove that all 1-level candidate germs can be realised by pressures of some locally constant potentials, as long as the number of symbols in the symbolic set is large enough. There are also some results on fitting 2-level germs by pressures of locally constant potentials obtained in the work.
Given the full shift over a countable state space on a countable amenable group, we develop its thermodynamic formalism. First, we introduce the concept of pressure and, using tiling techniques, prove its existence and further properties, such as an infimum rule. Next, we extend the definitions of different notions of Gibbs measures and prove their existence and equivalence, given some regularity and normalization criteria on the potential. Finally, we provide a family of potentials that nontrivially satisfy the conditions for having this equivalence and a nonempty range of inverse temperatures where uniqueness holds.
Studies of the paragenesis of authigenic illite in arkosic sandstones of various regions and ages have revealed that the illitization of kaolinite is an important reaction accounting for the formation of authigenic illite in sandstones during burial diagenesis. The illitization of kaolinite takes place at an intermediate burial depth of 3–4 km, where pressure can reach values of 100 MPa (≈ 1000 bars). The purpose of the present study was to analyze the effect of pressure on the rate of kaolinite illitization in alkaline conditions. Hydrothermal reactions were conducted on KGa-1b kaolinite in KOH solution at 300°C and under pressures of 500, 1000, and 3000 bars for 1 to 24 h. The visual examination of the X-ray diffraction (XRD) patterns indicated a notable influence of pressure on the reaction rate. Molar percentages of muscovite/illite formed at each time interval were calculated from the analysis of two diagnostic XRD peaks, representing the 060 reflections of kaolinite and muscovite/illite. The data were modeled to obtain the initial rate of conversion at each pressure. The results indicated that the initial rate of kaolinite to muscovite/illite conversion is one order of magnitude greater at 3000 bars than at 500 or 1000 bars. Comparison of these data with those in the literature show a faster conversion rate (several orders of magnitude) in an initially high-alkaline solution than in a near-neutral solution.
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.
Hemorrhage control prior to shock onset is increasingly recognized as a time-critical intervention. Although tourniquets (TQs) have been demonstrated to save lives, less is known about the physiologic parameters underlying successful TQ application beyond palpation of distal pulses. The current study directly visualized distal arterial occlusion via ultrasonography and measured associated pressure and contact force.
Methods:
Fifteen tactical officers participated as live models for the study. Arterial occlusion was performed using a standard adult blood pressure (BP) cuff and a Combat Application Tourniquet Generation 7 (CAT7) TQ, applied sequentially to the left mid-bicep. Arterial flow cessation was determined by radial artery palpation and brachial artery pulsed wave doppler ultrasound (US) evaluation. Steady state maximal generated force was measured using a thin-film force sensor.
Results:
The mean (95% CI) systolic blood pressure (SBP) required to occlude palpable distal pulse was 112.9mmHg (109-117); contact force was 23.8N [Newton] (22.0-25.6). Arterial flow was visible via US in 100% of subjects despite lack of palpable pulse. The mean (95% CI) SBP and contact force to eliminate US flow were 132mmHg (127-137) and 27.7N (25.1-30.3). The mean (95% CI) number of windlass turns to eliminate a palpable pulse was 1.3 (1.0-1.6) while 1.6 (1.2-1.9) turns were required to eliminate US flow.
Conclusions:
Loss of distal radial pulse does not indicate lack of arterial flow distal to upper extremity TQ. On average, an additional one-quarter windlass turn was required to eliminate distal flow. Blood pressure and force measurements derived in this study may provide data to guide future TQ designs and inexpensive, physiologically accurate TQ training models.
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.
1. Although intra-abdominal hypertension and abdominal compartment syndrome (ACS) form part of a scale in clinical practice, they are different entities as the former may be chronic, but the latter involves acute organ failure.
2. The prevalence of ACS in the intensive care unit has been reported as 8.2 per cent, with a higher prevalence in medical patients (10.5 per cent), compared to the surgical cohort (5 per cent).
3. Palpation of the abdomen is highly unreliable as a method of detection.
4. A standardised measurement protocol is important to avoid significant inter-individual variability.
5. Management of these syndromes should be protocol-based and multi-modal.
Climate and weather have a great influence on the prevalence of depressive disorders. Selected physical parameters for instance light, temperature and pressure can be used to treat mood disorders.
Objectives
The present mini-review aims at approximating the mechanisms by which selected, strictly controlled physical parameters in particular light, temperature, and oxygen pressure can help in the treatment of depression and determine their potential effectiveness.
Methods
Relevant literature was identified by searching the PubMed/Medline database, by combining the search strategy of free text terms and exploding a range of MESH headings relating to the topics.
Results
Mechanisms that can modify the course of depression were briefly presented. Review of the literature showed the well-established position of bright light therapy (BLT) effective in treating seasonal (SAD) and non-seasonal affective disorders (non-SAD); safety and rapid-action of whole-body hyperthermia (WBH) and whole-body cryotherapy (WBC) were also demonstrated; the least data was available on hyperbaric oxygen therapy (HBOT), which had antidepressant properties only in people with concomitant neurological damages.
Conclusions
In addition to the well-established position of BLT in the treatment of depression, further research is needed on other methods, such as WBH, WBC, HBOT.
A constraint theory approach to creativity can conveniently be conceptualized in five different dimensions each of which captures some important way in which creativity is constrained. The five dimensions have been generated by the empirical patterns from comparing disciplines in the making. The first dimension is a list of the most important empirical types of constraints that emerge from theoretical sensitization of comparative data. All creative processes are constrained by physical constraints which was first noted by Hegel in his lectures on aesthetics and rediscovered be Elster. The important role of prototypes has been noticed by the art historian Ragnar Josephson and the literary theorist Johan Svedjedal. The role of knowledge constraints was noted by Randall Collins and elaborated by me. Rules of the game were discovered by Aristotle (theoretical, productive, practical knowledge) and rediscovered by Wittgenstein. Motivations have been at the core of sociopsychological and economic theories of creativity.
One of the main concerns about the fast spreading coronavirus disease 2019 (Covid-19) pandemic is how to intervene. We analysed severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) isolates data using the multifractal approach and found a rich in viral genome diversity, which could be one of the root causes of the fast Covid-19 pandemic and is strongly affected by pressure and health index of the hosts inhabited regions. The calculated mutation rate (mr) is observed to be maximum at a particular pressure, beyond which mr maintains diversity. Hurst exponent and fractal dimension are found to be optimal at a critical pressure (Pm), whereas, for P > Pm and P < Pm, we found rich genome diversity relating to complicated genome organisation and virulence of the virus. The values of these complexity measurement parameters are found to be increased linearly with health index values.
The decolonization, a process that leads to the nominal independence and international recognition of states, gained momentum in the late-1950s, having its peak in 1960, the African year, when 18 colonies, protectorates, and trust territories became independent. This chapter explores the decolonization of Africa from three perspectives: of the colonial powers, of the colonial states, i.e. the colonies themselves, and of the international system. It argues that there is not one explanation to capture the decolonization. Only if we scrutinize decolonisation from all three perspectives, we are able to comprehend that process in its complexity.
Coronavirus disease 2019 is an international pandemic. One of the cardinal features is acute respiratory distress syndrome, and proning has been identified as beneficial for a subset of patients. However, proning is associated with pressure-related side effects, including injury to the nose and face.
Method
This paper describes a pressure-relieving technique using surgical scrub sponges. This technique was derived based on previous methods used in patients following rhinectomy.
Conclusion
The increased use of prone ventilation has resulted in a number of referrals to the ENT team with concerns regarding nasal pressure damage. The described technique, which is straightforward and uses readily available materials, has proven effective in relieving pressure in a small number of patients.