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Blinding01:11

Blinding

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Blinding is a commonly used method of not telling participants which treatment a subject is receiving. Blinding is a critical part of a randomized control trial or RCT. It reduces the bias that affects the results. In an RCT, blinding is used in the form of a placebo. A placebo effect occurs when untreated subjects falsely believe they have received the treatment and report improved symptoms. A placebo or a dummy treatment is administered to subjects to negate the bias caused by such an effect.
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Concreting at elevated temperatures accelerates the hydration process, leading to quicker setting but potentially reducing the long-term strength of the concrete structure. Additionally, low air humidity fosters rapid moisture loss from the concrete, resulting in reduced workability, pronounced plastic shrinkage, and a higher likelihood of crazing.
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Cold Weather Concreting01:27

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When freshly poured concrete is exposed to freezing temperatures before it has set, the water within the concrete can freeze. This expansion disrupts the setting process, delays chemical reactions necessary for hardening, and increases the volume of pores within the hardened concrete, which weakens its overall structure. If the concrete manages to reach an appreciable strength before it freezes, the damage can be somewhat mitigated.
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In cold weather, masonry construction requires specific precautions to ensure mortar does not freeze before curing, as this can significantly weaken its strength and watertightness. Mortar temperature should be maintained between 60°F and 80°F to support proper hydration and curing. Below 40°F, mortar water must be heated, but should not exceed 120°F as high temperatures can reduce mortar's compressive and bond strength.
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Taping over varying ground profiles requires careful adaptation to achieve accurate measurements. On smooth, level ground with minimal vegetation, the tape can rest directly on the ground. Here, the taping team, typically consisting of a head and a rear tapeman, coordinates their positions with clear communication. The rear tapeman holds the tape at the starting point and guides the head tapeman toward a range pole placed beyond the endpoint, using hand or voice signals to ensure alignment.On...
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Frost Action on Concrete01:27

Frost Action on Concrete

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Concrete structures in cold climates, such as those along roadsides, can retain moisture. This moisture makes them susceptible to frost-related damage when temperatures fall below freezing. Adding moisture worsens the damage during temperature fluctuations, leading to repeated freezing and thawing. De-icing salts, spread over these structures to melt ice, add to the freeze-thaw cycle, and draw even more moisture into the concrete.
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Piercing the Overcast.

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This summary is machine-generated.

A medical student

Keywords:
medical humanitiespatient connectionpersonal narrativepsychiatry

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Area of Science:

  • Narrative medicine
  • Psychiatric care
  • Patient-physician relationship

Background:

  • Medical students often face challenges in establishing patient connections.
  • Previous experience as a psychiatric technician influenced the student's perspective.
  • Adversity in patient interaction can lead to unexpected positive outcomes.

Purpose of the Study:

  • To explore the transformative potential of challenges in patient connection.
  • To illustrate how difficult experiences can foster 'collateral beauty' in medical training.
  • To highlight the value of narrative medicine in understanding the medical journey.

Main Methods:

  • Personal narrative essay format.
  • Reflection on experiences as a psychiatric technician.
  • Application of narrative medicine principles.

Main Results:

  • Adversities in patient connection were reframed as opportunities for growth.
  • The student discovered a deeper appreciation for the patient-physician relationship.
  • Unexpected positive insights ('collateral beauty') emerged from challenging interactions.

Conclusions:

  • Difficulties in patient connection can be a source of profound learning and development for medical students.
  • Narrative medicine provides a framework for understanding and integrating challenging clinical experiences.
  • Embracing adversity can lead to enhanced empathy and a more meaningful medical practice.