Mechanical Engineering: Mechanisms, Joints, and Power Transmission Systems
A machine is a system composed of one or more mechanical parts with moving components and, at times, other assemblies. A mechanism is a set of mechanical elements that perform guidance and transmission functions related to the movements and forces within a machine. Joints can be classified as fixed or detachable.
Fixed Joints: Used when the union must withstand significant mechanical forces, and dismantling is not necessary.
Detachable Joints: These elements are linked but can be dismantled. Some
Read MoreUnderstanding Car Transmission Systems: A Comprehensive Guide
Car Transmission Systems
Epicyclic Train
This system builds speed transmission relationships, offering several transmission ratios and reverse spin. Key components include the planetary gear and ring gear. Some systems use two epicyclic trains, uniting a planetary gear with other fitted pieces.
Brakes and Clutches
Cinta Brake
The drum rotates while a band tightens when the piston receives pressure, activating the brake.
Disc Brake
Oil pushes the piston, compressing discs of different materials. The housing
Read MoreWater Distribution Networks
Water distribution networks ensure a sufficient and continuous water supply to all subscribers and have the precise extent to cover the entire population.
Distribution Control Tanks
Given that the water flow is constant during the clock in the case of driving shot, or during certain hours only in the case of elevation, and which, in turn, the flow of consumption is essentially variable, the use of tanks is needed where excess water can be stored when the flow of consumption is less than the input
Read MoreDatabase Concepts and Architectures
Tables and Keys
A table (or relation) represents a specific entity of data. It’s composed of:
- Primary Key: A unique value identifying each tuple (row).
- Tuples (Rows): Instances of the entity.
- Attributes (Columns): Characteristics of the entity.
Primary Key: Unique across all tuples, used for identification and querying.
Foreign Key: Links to the primary key of another table.
Data Integrity
Ensures data accuracy, consistency, and validity through rules and constraints.
- Entity Integrity: No primary key attribute
Copper Mining: From Exploration to Production
Exploration Stages
Basic Navigation
In this first stage, a general reconnaissance of a large area (tens to hundreds of kilometers) is conducted to identify favorable characteristics that may indicate the presence of a copper field.
Intermediate Exploration
The objective of this stage is to confirm the existence of copper mineralization at depth, based on the information collected in the previous stage.
Advanced Exploration
This stage determines more precisely the shape and extent of the deposit and the
Read MoreAndroid App Development Essentials
What’s Inside an APK File?
Android SDK tools compile your Java source files into .dex files and then zip them together with project resources (images, layouts, etc.) and the manifest file into an APK. You need to build the .apk from Android Studio at least once to see the apk folder on your laptop. Unzip any Android .apk, and you’ll see these files inside:
YourProject/app/build/outputs/apk- Resource: layouts, icons, images, animations, strings
- Manifest: application-wide configuration (components, permissions)