Notes, summaries, assignments, exams, and problems for Vocational training

Majolica

**To be decorated, parts were acquired at a lower cost, and thus the slab was imposed on metal objects.** He influenced all of Europe. The majolica ceramic body is covered with a porous coating with tin and painted with enamel colors. This technique, originating from the Islamic world, was widely used in the Iberian Peninsula and Italy, especially in Majorca, hence the term "majolica" (Italian *Maiolica* = Mallorca).

Once baked, the enamel is spread with a thin layer of copper or silver pigment mixed with ochre. It is then fired again, producing a total or partial metallization of the copper pigments. This gives the object a special shine and produces reflective effects. There is a wide color gamut.

Porcelain

Porcelain is the most refined... Continue reading "History and Types of Porcelain: From China to Europe" »

Banking Financial Intermediaries in Spain

Banks, thrifts, and credit unions constitute the Spanish banking system. These entities are financial intermediaries. The primary differences between them lie in their legal structure:

• Banks: Private companies aiming to generate profits for their owners.
• Savings Banks: Non-profit entities allocating profits to charitable and social causes.
• Credit Unions: Members are depositors who benefit from their financial services.

Regarding services, the typical activities of these banking intermediaries are very similar: deposit-taking and lending.

Market Failures

1. Cycles: The market is criticized for failing to ensure stable economic growth.
2. Externalities: Many economic activities generate external effects on society

Toxicological Properties and Exposure

The dose of a poison refers to the quantity absorbed by the body, typically measured in milligrams per kilogram (mg/kg). The resulting damage depends on various factors, including human physiology, the contaminant's inherent toxicity, and the rate at which the body absorbs the contaminant. Given the variability of these factors, we define the concept of exposure, represented by the formula E = f(c, t), where 'c' is concentration and 't' is time.

Types of Poisoning

• Acute Intoxication: This leads to a severe deterioration in the body, becoming apparent within a short period. It requires acute exposure to the toxic substance and rapid absorption by the organism.
• Subacute Intoxication: Less severe than acute intoxication,

Chalcolithic Material Characteristics

Bell-shaped vessels were common, known for their good cooking properties and profuse exterior decoration. Smaller vessels sometimes featured interior decoration as well. The exterior typically displayed alternating smooth and decorated horizontal bands. Lower triangular motifs sometimes incorporated radial patterns when viewed from below, while the lip featured narrow bands with more complex decorations. Vertical band developments were also present. Some bands were filled with parallel oblique lines, oblique lattice patterns, or left undecorated. Printed series of spikes were also observed. The arrangement and combination of decorative motifs varied depending on the specific type, such as troughs, Ciempozuelos,... Continue reading "Chalcolithic Artifacts: Pottery, Arrowheads, and Idols" »

Types of Welding and Soldering

Homogeneous Welding

In homogeneous welding, the metals being joined are of the same nature as the filler material.

Heterogeneous Welding

In heterogeneous welding, the materials involved are of different natures.

Soldering

Soldering is a heterogeneous weld between two metals, potentially using a filler metal ('contribution') of a different kind. It typically involves fusion materials below 450°C. Common applications include welding cables, panels, and low-resistance joints in bodywork (carrocería). The process relies on a filler metal that melts and spreads across the surface of the base metals.

Tin-Lead Solder

The melting temperature for tin-lead solder is approximately 230°C. The process involves:

1. Cleaning the surfaces
2. Scraping
3. Applying

1. Recording Electrical Installation Operations

Operations are performed when an electrical installation is recorded. A facility or discharge is recorded under the following conditions:

• Open and visibly disconnect from all power supply sources.
• Block or lock in the open position, if possible, using cutting devices.

2. The Five DOR Rules for Working Without Voltage

The five DOR (De-energization, Operation, Recognition) rules for prevention and protection work without tension are:

1. Open and visibly disconnect all voltage sources via switches and disconnectors to ensure the impossibility of unforeseen re-energization.
2. Block or lock the cutting devices in the open position, if possible.
3. Verify the absence of voltage.
4. Apply grounding and short-circuiting

Sixtus V's Vision for Rome

Goyo XIII established a law that allowed and recommended opening large avenues for communication. Sixtus V capitalized on the decline of Philip II, transforming Rome into the capital of the Catholic world. He justified his actions with religious reasoning, constructing basilicas and avenues to facilitate communication. These avenues served as focal points for pilgrims, creating a dynamic urban space.

The Strada Felice and Fontana's Commission

Sixtus V commissioned Domenico Fontana to create the Strada Felice, a grand avenue bearing his name. Fontana also designed the Piazza del Popolo, connecting it to the Basilica of Santa Croce in Gerusalemme. Sixtus V chose this route because it forced passage through the Basilica... Continue reading "Sixtus V's Urban Planning: Rome's Baroque Transformation" »

Risks Linked to Security Conditions

The following are common risks associated with security conditions in the workplace:

• Falls of persons, both at the same level and different levels.
• Clashes with mobile and immobile objects.
• Entrapments, cuts, and projections of particles.

Preventive Measures for Security Conditions

To avoid these risks, the following measures should be implemented:

• Premises must have a minimum height of 3 meters, and offices should have a minimum height of 2.5 meters.
• Each worker must have a working space of at least 2 square meters of surface area and 10 cubic meters of volume.
• Main corridors should have a minimum width of 1.20 meters, and side corridors should have a minimum width of 1 meter.
• Passage areas and workplaces must be

Fire Extinguisher Placement and Maintenance

Extinguishers must be located on every floor, adjacent to exits, and near areas of greatest risk. The maximum distance between them should be 15 meters, ensuring quick and easy access. They should be star-marked and protected, especially if installed outdoors. Annual maintenance is mandatory.

Anti-Fire Regulations

Regulations are governed by the CIE Technical Building Code and RSCIEI (for industrial hydrants).

Industrial Hydrant Systems (BIE)

The manual fire fighting compound (BIE) consists of:

• Water supply (undertaken, independent of the normal water supply).
• Network distribution.
• Fire hydrants equipped with: C1 valve, C2 hose, and C3 nozzles.

Types of Hoses (BIE)

There are two types of hoses:

BIE25

• Length:

Heating and Ventilation Troubleshooting

Insufficient heating: Check the heating tap or mixture hatch to ensure it is open. If the circuit has purgers, check their operation. Verify the operation of the thermostat and check the heating radiator.

Insufficient ventilation: Check the status of the cabin filter. Verify that the flaps are functioning normally. Check the air distribution and verify proper functioning.

Blower Motor Inspection

Blower: Check that pressing the switch turns on all speeds. Following the electrical schema, check the command switch. Listen for noises or squeaks caused by a lack of lubrication on the armature shaft and bearing supports. Check for vibrations caused by an imbalance of the turbine during its turn.

Refrigerant and