Notes, abstracts, papers, exams and problems of Vocational training

Gases, Vapors, and Associated Risks

A gas is matter neither liquid nor solid at room temperature and normal atmospheric pressure, expanding to fill any container. A vapor is the gaseous state of a substance typically solid or liquid. Fumes result from volatilization or sublimation. Gases and vapors diffuse freely, remaining mixed with air.

Lead Poisoning

Metabolism

Inhaled lead is 40-60% retained in the lungs, entering circulation. Ingested lead absorption is about 10%. Blood lead distributes to liver, kidneys, brain, and bone. Elimination occurs via respiratory tract, gastrointestinal system (bile, feces), urine, and generalized discharges (colic).

Pathological Effects

• Hematologic: Altered metabolism via enzyme changes and metabolite accumulation.

Electronic Display Technologies

1. Seven-Segment Display

Comprised of seven LEDs arranged to produce the idealized representation of a number. An optional eighth LED can serve as a decimal point. The number of management-control signals for each display is N = segments + DP. In multiplexed mode, the number of necessary control signals is N = segments + DP + viewers.

Variants

Alphanumeric seven-segment displays add extra segments to represent alphanumeric characters. These have largely been replaced by LED matrix displays.

2. LED Matrix Display

An array of LEDs that can generate characters, symbols, and pictures. The number of control signals required for each display is N = rows + columns.

3. Vacuum Fluorescent Display (VFD)

Composed of filaments,... Continue reading "Electronic Display Technologies: A Comprehensive Overview" »

Observation: Concepts and Features

Observation is an inherent part of human nature, integrated into our psychology in relation to everyday events. It involves the perception of a phenomenon that is selected and recorded without manipulation, making the observer a passive witness of what has occurred.

Observation can vary in its degree of systematization, ranging from casual observation to those that adhere to strict methodological criteria.

Observation becomes a scientific technique when it meets the following criteria:

• It is part of an objective investigation.
• It is stated and recorded systematically.
• It is subject to checks and controls regarding validity and reliability.

Types of Observation

Self-Observation

Self-observation occurs when the observer... Continue reading "Understanding Observation: Types and Techniques" »

Active Directory provides a method to design a directory structure that meets the needs of any organization. It has many advantages, such as system scalability and ease in locating resources throughout a network.

• Active Directory allows a single point of management for all public resources, which may include files, peripheral devices, connections to databases, web access, users, services, etc.
• It uses the Internet DNS as the location service.
• Active Directory components are used to build a directory structure reflecting the needs of an organization.

Logical Structure

The logical structure of the organization is represented by domains, organizational units, trees, and forests.

• Domain: The central unit of the logical structure of Active Directory is

Motivation Techniques for a Productive Workplace

Motivation techniques encompass various strategies, including increased responsibilities, improved economics, private physicians, Christmas gifts, and travel deals.

Promotion at Work

When few can gain professional advancement, Human Resources departments can promote motivation by giving employees more responsibility, new tasks, and greater remuneration.

Wage Policy

Entrepreneurs should recognize that money is a primary motivator for young people and address this accordingly. Incentives such as cars, trips, and prizes can also be effective.

Working Environment

The working environment encompasses everything around the worker:

• Physical environment: Temperature, noise, humidity, etc.
• Psychic and social environment:

Key Warehouse Functions

Departure

• Monitor the consumption of items by various departments.
• Suitably distribute articles.

Entry

• Reject material that does not meet the requirements of the order.
• Monitor and handle the exchange of expired material.

Storage

• Protect and oversee all the products stored.
• Register and control the movements of stock.
• Avoid losses in the stored materials.
• Ensure items are consumed before the expiry date.
• Design documents necessary for good control of the warehouse.
• Request resupply when stocks are minimal.

When to Start Product Replacement

Replacement of a product should start before falling below the minimum stock.

High Maximum Stock: Advantages and Disadvantages

Maximum stock refers to the maximum amount of a particular item above... Continue reading "Warehouse Functions and Inventory Management in Healthcare" »

Computer System Components and Definitions

Perform = realizar || Word processor = procesador de textos || Built-in = incorporado || Store = tienda || Financial = financiero

Keep, save = mantener, guardar || Execute, do = ejecutar, hacer || Monetary = monetario || Connected to the internet = conectado a internet || Program used for text manipulation = programa para manipular texto || Copy files from a server to your PC or mobile = copiar archivos de un servidor a PC o móvil

Perform operations = realizar operaciones || Do research = hacer la investigación || Carry out transactions = llevar a cabo transacciones

Monitor = monitor || Keyboard = teclado || Printer = impresora || Scanner = escáner || Speakers = altavoces || Fan = ventilador || Processor

Types of Dimensions

Dimension Series

Dimension series are easy to implement but can accumulate errors during manufacturing. They are suitable for conventional parts that don't require special machining, such as numerical control machining. This method involves a series of operations in the manufacturing process.

Parallel Dimension

In this system, all dimensions are oriented in the same direction. It's used when a reliable reference is needed, as it avoids accumulating manufacturing errors since all measurements originate from the same point.

Combined Dimension

Combined dimensioning merges serial and parallel dimensioning. While it simplifies dimension lines and maintains necessary measurements, it requires adding or subtracting measurements.

Progressive

• Talk: A meeting where a speaker provides information and communicates with the audience.
  • Objective: To inform people and create a mental connection.
  • Information is informal and cannot be read.
  • Talks should not last more than one hour.
  • The speaker can ask the public questions, and vice versa.
  • Only one person can participate in a talk as the speaker.
  • The audience can ask questions during a talk.
  • The presenter of a talk can be introduced or follow a specific order.
• Conference: A gathering of people who listen to and face the information others provide.
• Address: An oral argument, persuasive to some extent, addressed to an audience or one person.
  • An address cannot be written as it is an oral presentation that targets the public.
• Interview:
  • The purpose of an

Passive Voice

PASSIVE: Subject + BE + Past Participle + (BY + Complement Agent)

• Present Simple: Susan writes books (Books are written by her)
• Present Continuous: Susan is writing books (Books are being written by her)
• Present Perfect: Susan has written books (Books have been written by her)
• Past Simple: Susan ate sweets (Sweets were eaten by her)
• Past Continuous: Susan was writing books (Books were being written by her)
• Past Perfect: Susan had written books (Books had been written by her)
• Future Simple: Susan will write books (Books will be written by her)
• Future Perfect: Susan will have written books (Books will have been written by her)

Object Pronouns:

I (ME) YOU (YOU) HE (HIM) SHE (HER) IT (IT) WE (US) THEY (THEM)

Impersonal and Personal Passive Structures

Impersonal