What is pressure?4 answersPressure is a multifaceted concept with diverse implications across various disciplines. It can manifest as a cultural metaphor in urban sociology and cognitive psychology, influence performance under social pressure based on task type and reward structure, play a crucial role in studying protein energetics and interactions through high-pressure applications, be defined through various terms like "static-fluid pressure" or "vapor pressure" in material properties discussions, and serve as a fundamental thermodynamic variable in creating exotic materials and modulating transport properties, particularly in the preparation of inorganic thermoelectric materials. These contexts collectively highlight pressure's significance in shaping human experiences, scientific research, material properties, and performance outcomes.
What are the advantages of using semi-structured interviews in research over other methods?4 answersSemi-structured interviews offer several advantages in research over other methods. They provide in-depth insights into hidden aspects of social life, allowing for the exploration of under-researched informal civil society and unregistered initiatives. Additionally, these interviews enable researchers to access detailed explanations of experiences, opinions, emotions, and motivations of research subjects, which can be challenging to obtain through other methods. Furthermore, semi-structured interviews are valuable for studying language attitudes, as they can reveal new information and dimensions to established knowledge, although participants may exhibit response bias. Lastly, conducting semi-structured interviews with academic colleagues in the same professional practice area offers rich data collection opportunities, emphasizing the importance of researcher positionality and flexibility in roles during interviewing.
What could cause a breakdown of the semi-permanent pressure features of the atmosphere?5 answersThe breakdown of the semi-permanent pressure features of the atmosphere, such as the sub-tropical high pressure areas, can be influenced by various factors. One significant factor is the excitation of internal gravity waves (IGWs) caused by moving nonstationary heat sources within the atmosphere. Additionally, the generation of regular filamentary plasma arrays at high pressures can also impact the atmospheric dynamics, potentially leading to changes in the pressure features. Furthermore, the production of air breakdown plasma using millimeter-wave radiation can introduce frequency tunability and high peak power, affecting the atmospheric conditions and potentially influencing the stability of pressure systems. These factors collectively contribute to the potential breakdown of the semi-permanent pressure features in the atmosphere.
What is semi-structured intervier?5 answersSemi-structured interviews are a widely used technique in development research. Unlike formal interviews, which follow a rigid format of set questions, semi-structured interviews focus on specific themes but cover them in a conversational style. They are often the best way for learning about the motivations behind people’s choices and behaviour, their attitudes and beliefs, and the impacts on their lives of specific policies or events. And they often provide valuable information that wasn’t anticipated by the researcher. Whether you are interviewing a ministry official, a farm worker, or a head teacher, there are tips and techniques for getting the most from the conversation. In-depth, semi-structured interviews are verbal interchanges where one person, the interviewer, attempts to elicit information from another person by asking questions. Even though interviewers tend to prepare a list of predetermined questions, in-depth, semi-structured interviews usually unfold in a conversational manner offering participants the chance to pursue issues they feel are important. In-depth, semi-structured interviews are a commonly used method in geographical research. The semi-structured interview method combines some structured questions with some unstructured exploration. The semi-structured interview is useful for when you know something about a topic, but want to give users an opportunity to raise new issues. Semi-structured interviews are useful when you are working with a complex issue because you can use probes and spontaneous questions to explore, deepen understanding, and clarify answers to questions. This chapter shows how semi-structured interviews can contribute to the study of language attitudes. It pays particular attention to how understanding interviews as contextually and socially situated speech events, shaped by the spatial and temporal context in which they take place and the relationship between interviewer(s) and interviewee(s), is crucial for the analysis and interpretation of interview data.
Does Higher partial pressure leads to greater binding of oxygen to haemoglobin.?5 answersHigher partial pressure does not necessarily lead to greater binding of oxygen to haemoglobin. In the study by Kiyimba et al., it was found that high-oxygen conditions (80% O2) had no effect on the extent of 4-hydroxyl-2-nonenal (HNE)-binding to myoglobin, but it did increase oxymyoglobin oxidation. Similarly, Gill et al. observed that oxygen binding to the polymer phase of hemoglobin S was either negligible or small under present experimental conditions. On the other hand, Matthews and Seymour found that the haemoglobin of aquatic backswimmers displayed a triphasic, highly sigmoid oxygen equilibrium curve, indicating adaptive affinity and cooperativity for oxygen. Guesnon et al. observed that the binding of halothane to hemoglobin resulted in a maximum increase in oxygen partial pressure of 25%, suggesting an oxygen-linked character of the binding. Therefore, the effect of higher partial pressure on oxygen binding to hemoglobin can vary depending on the specific conditions and the type of hemoglobin being studied.
If pressure is applied, the contact angle is lower?5 answersWhen pressure is applied, the contact angle decreases. This phenomenon has been observed in experiments with carbon dioxide-water and ethane-cyclohexane interfaces with the surface of stainless steel. The decrease in contact angle with increasing pressure is explained by the dissolution of gases in the liquid. The thermodynamic theory formulated in the literature shows that an increase in pressure in a liquid always leads to an increase in the contact angle. The dependence of the contact angle on pressure has also been experimentally confirmed, providing a possible explanation for contact angle hysteresis. Additionally, it has been found that the contact angle on a smooth, homogeneous surface can be varied by changing the pressure at the three-phase line.