Notes, summaries, assignments, exams, and problems for Technology

Paper-Based Biosensors

Immunosensors

Immunosensors are affinity ligand-based biosensor solid-state devices in which the immunochemical reaction is coupled to a transducer. The fundamental basis of all immunosensors is the specificity of the molecular recognition of antigens by antibodies to form a stable complex.

Paper-Based ELISA

There are different techniques for the design and development of immunoassays. For instance, combining ELISA (Enzyme-Linked Immunosorbent Assay) and patterned paper provides a beneficial protocol for performing immunoassays.

Advantages and Disadvantages of Paper-Based ELISA

Paper-based ELISA offers three principal advantages over conventional ELISA performed in plastic 96-well plates:

• More rapid detection.
• Requires only small

Types of Knives

Chef's Knife (Cebollero)

• All purpose knife for peeling, trimming, chopping, slicing, and dicing
• Triangular blade, rock chop

Utility Knife or Salad Knife

• All purpose, smaller than the chef's knife
• Used specially for peeling and slicing fruit and vegetables

Santoku Knife or Japanese Cook's Knife

• Sheep's foot tip
• Top chop

Paring Knife

• Used for paring or peeling fruits and vegetables

Tournée Knife

• Sometimes considered as a kind of paring knife
• Used for turning vegetables

Slicer Knife

• Long slender and flexible blade
• Used for carving or slicing cooked meats

Bread Knife or Serrated Slicer

Used to cut bread, cakes, and similar food

Boning Knife

• Thin and pointed blade
• Used for boning raw meats, poultry, and fish
• Used for trimming fat from meats

Filleting Knife

• Pointed

Essential Kitchen Cutting Tools

Vegetable Peeler

A short tool with a slotted, swiveling blade used for peeling vegetables and fruits. There are two types: Swiss peeler and standard peeler.

Mandoline

A manual slicer with adjustable blades for creating various cuts, such as julienne, batonnet, and waffle slices.

Sharpening Steel

Used for honing and maintaining knife edges, keeping them sharp with regular use. Not intended for sharpening dull knives.

Sharpening Stone

Also known as a whetstone, used to sharpen dull knives and refine their edges.

Cutting Board

Made of wood, plastic, or composite material, used as a stable surface for cutting, chopping, and other food preparation tasks.

Scissors

Versatile kitchen tool for various tasks, such as snipping herbs,... Continue reading "Essential Kitchen Cutting Tools and Techniques" »

Know what the relationship is between density and temperature

Substances have different densities depending on their temperature.  

For example, a lake on a hot summer day. The surface temperature is warmer than the water beneath. The warm water floats on the cold because it has a lower density. 

Know why your ears pop when you are landing at an airport

Your ears pop from pressure change. The change of pressure outside causes your middle ear to have to readjust, resulting in a popping sound

Know the term buoyancy and why objects sink or float in a substance

Buoyancy is the ability of an object in a fluid to rise or sink due to density differences with its surroundings.

Know the densities of some common substances

Know

Firefighting Pump Hydraulics: Essential Formulas & Calculations

This document outlines key formulas and operational guidelines for effective firefighting pump management and water delivery.

Pressure Calculations & Formulas

• Elevation Pressure (EP):
  • EP = 0.5 x height in feet
  • EP = 5 psi x (number of stories - 1)
• Head Pressure: Head Pressure = feet / 2.304
• Net Pump Discharge Pressure (Net PDP): Net PDP = PDP - Intake Reading
• Net Discharge Pressure (at Draft): Net DPD = PDP + Intake Pressure Correction
• Pressure Correction: Lift + Total Intake Hose Friction Loss ÷ 2.3
• Pump Discharge Pressure (PDP): PDP = Nozzle Pressure (NP) + Total Pressure Loss (TPL) (round to nearest 5 psi)
• Flow of Solid Stream: gpm = 29.7 x D² x √NP
• Nozzle Reaction (Solid Stream)

To find out whether your vehicle needs oil, follow these steps:

1. Pull out the dipstick and wipe it off on a clean lint-free rag (be sure the engine is cold).
2. Insert the stick back into the pipe.
3. Pull the dipstick out again and look at the film of oil on the end of the stick.
4. Put the dipstick back into the pipe. You're done!

Specifications:

Two-door, mid-engine, four-wheel drive sports car. The engine is a 6.2-liter V12 with 571 bhp. The acceleration is 0-60 mph in 3.8 seconds with a top speed of 205 mph. The doors do not open conventionally.

Abbreviations:

• FWD: Front Wheel Drive
• bhp: Brake Horse Power
• g/km: Grams per Kilometer
• gdi: Gasolina Direct Injection
• MPG: Miles per Gallon
• MPH: Miles per Hour
• NM: Newton Meters
• RPM: Revolutions per Minute
• RWD: Rear Wheel

New Distribution Capability (NDC)

NDC forced GDSs to implement more modern data transmission channels to distribute ancillaries to customers.

It is based on a new, single, flexible, and standard language for all air content.

Benefits of NDC

The technology behind this distribution system is planned to generate the following benefits:

1. Encourage innovation, personalization, and brand recognition;
2. Enable further product differentiation and faster time-to-market;
3. Offer travel sellers easier access to real-time, accurate data, rich imagery,
4. Provide exciting new offers created by airlines;
5. Travelers can enjoy more services and a more personalized travel experience;
6. Offer more options for travel sellers (e.g., concert tickets, etc.). More options mean more revenue

He has been a blacksmith for over 30 years and has created weapons for over 200 films. This is Man at Arms.

"The weapons of anime are always my favorite, and I know that the fans have been asking for this for a long time. This is Elucidator from Sword Art Online." He begins by sketching the Elucidator by hand and transferring the design onto 1075 SQT steel. Using a band saw with a bimetal blade, he cuts out the heart of the sword and refines the edges with a belt sander. He marks the internal cut with a soapstone marker and uses a plasma cutter to create the symbol. Another piece, cut from 3/8 gauge carbonized steel, will cover the main section. The edges are leveled, the surface is polished, and any leftovers are trimmed with a Dynafile.

Crafting

Mechanical Motion Transformation Systems

Rack and Pinion Mechanism

The rack and pinion mechanism has two parts: the rack, which is a straight bar, and the pinion, which is a gear. Both have teeth that interlock. When the pinion rotates, the rack moves. If the mechanism is reversible, the pinion also rotates when the rack moves.

Nut and Bolt Mechanism

This mechanism has two parts: a bolt with a spiral groove and a nut that turns around it.

• When the bolt is stationary, the nut rotates and moves along the bolt. This is used to fasten different parts together.
• When the bolt is mobile, it moves through the nut. We use this to lift loads.

Winch and Crank Mechanism

A winch is a cylinder that rotates around a horizontal axis. We attach a rope to a winch and... Continue reading "Mechanical Motion Transformation Systems Explained" »