Listado


28-09-21
How battery chargers work
How battery chargers work How battery chargers work

    How battery chargers work     If you've read our main article on batteries, you'll know all about these portable power plants. An example of what scientists refer to as electrochemistry, they use the power of chemistry to release stored…

    How battery chargers work     If you've read our main…

Gratis
A Coruña
28-09-21
Cars that watch you watch them steer
Cars that watch you watch them steer Cars that watch you watch them…

    Cars that watch you watch them steer     The automobile, in American life, has long been a hallmark of freedom. A teenager’s first driver’s license offers freedom from Mom and Dad. A new car and the open road bring the freedom to chase the American…

    Cars that watch you watch them steer     The automobile, in…

Gratis
A Coruña
28-09-21
Control Valve
Control Valve Control Valve

    Control Valve     This valve controls the expulsion of oil from the spring side of the second gear band servo piston at speeds in the region of 60 km/h. The time period for oil to exhaust then depends upon the governor pressure varying the effective…

    Control Valve     This valve controls the expulsion of oil from…

Gratis
A Coruña
28-09-21
How Cement Mixers Work
How Cement Mixers Work How Cement Mixers Work

    How Cement Mixers Work     In addition to the mixing energy applied to the fresh concrete (i.e. shearing during mixing), the shear history after mixing is also important. This applies especially to binder rich concretes like the different types of…

    How Cement Mixers Work     In addition to the mixing energy…

Gratis
A Coruña
28-09-21
Bus HVAC energy consumption test method based on HVAC unit
Bus HVAC energy consumption test method based on HVAC unit Bus HVAC energy consumption…

    Bus HVAC energy consumption test method based on HVAC unit     In this study, passenger comfort and the air pollution status of the micro-environmental conditions in an air-conditioned bus were investigated through questionnaires, field…

    Bus HVAC energy consumption test method based on HVAC unit    …

Gratis
A Coruña
28-09-21
Introduction to Injection Mold Verification
Introduction to Injection Mold Verification Introduction to Injection Mold…

    Introduction to Injection Mold Verification     Injection molding is one of the most commonly used production processes for plastics. This is rightly so as it offers a viable solution for the mass production of high-quality injection automotive…

    Introduction to Injection Mold Verification     Injection…

Gratis
A Coruña
28-09-21
Beauty & Style
Beauty & Style Beauty & Style

    Beauty & Style     Earrings, ornaments decorating the ears, have been one of the principal forms of jewelry throughout recorded history. The term usually refers to ornaments worn attached to the earlobes, though in the late twentieth century it…

    Beauty & Style     Earrings, ornaments decorating the ears, have…

Gratis
Albacete
28-09-21
Can Liquid Nails Bond Wood To Metal?
Can Liquid Nails Bond Wood To Metal? Can Liquid Nails Bond Wood To…

    Can Liquid Nails Bond Wood To Metal?     It’s a common household problem. However, you have another problem. You have a wooden bathroom door and a metal knob. What’s the quickest way to reattach the two surfaces? Can you trust your tube of liquid…

    Can Liquid Nails Bond Wood To Metal?     It’s a common household…

Gratis
A Coruña
28-09-21
Basic electrical quantities: current, voltage, power
Basic electrical quantities: current, voltage, power Basic electrical quantities:…

    Basic electrical quantities: current, voltage, power     Voltage and current are the cornerstone concepts in electricity. We will create our first mental models for these basic electrical quantities. We will also talk about power, which is what…

    Basic electrical quantities: current, voltage, power     Voltage…

Gratis
London
28-09-21
Preparation of activated carbon from biomass and its’ applications in water and gas purification
Preparation of activated carbon from biomass and its’ applications in water and gas purification Preparation of activated…

    Preparation of activated carbon from biomass and its’ applications in water and gas purification     Due to its versatility and wide range of applications, activated carbon is widely used as contaminant removal media. Recent research have focused on…

    Preparation of activated carbon from biomass and its’ applications…

Gratis
A Coruña
28-09-21
Auto-disable syringes are not for needle programmes
Auto-disable syringes are not for needle programmes Auto-disable syringes are not…

    Auto-disable syringes are not for needle programmes     WHO and its partners recommend the use of auto-disable syringes, "bundled" with the supply of vaccines when donor dollars are used, in all mass immunization campaigns, and also…

    Auto-disable syringes are not for needle programmes     WHO and…

Gratis
A Coruña
27-09-21
What Is Microfiber Leather
What Is Microfiber Leather What Is Microfiber Leather

    What Is Microfiber Leather     Microfiber leather is an abbreviation of ultrafine fiber PU synthetic leather. It is a non-woven fabric made of three-dimensional structure network by carding acupuncture with microfiber staple fiber. After wet…

    What Is Microfiber Leather     Microfiber leather is an…

Gratis
Albacete
27-09-21
The air conditioning trap: how cold air is heating the world
The air conditioning trap: how cold air is heating the world The air conditioning trap: how…

The air conditioning trap: how cold air is heating the world On a sweltering Thursday evening in Manhattan last month, people across New York City were preparing for what meteorologists predicted would be the hottest weekend of the year. Over the past…

The air conditioning trap: how cold air is heating the world On a…

Gratis
A Coruña
27-09-21
Why is fiberglass mesh needed?
Why is fiberglass mesh needed? Why is fiberglass mesh needed?

Why is fiberglass mesh needed? Composite sheets of fiberglass mesh for marble reinforced polycarbonate were prepared by hot compress molding. The effects of lay-up structure, lay-up angle, area density of fiberglass mesh and the thickness of PC film on…

Why is fiberglass mesh needed? Composite sheets of fiberglass mesh…

Gratis
London
27-09-21
Cast Iron Pipe
Cast Iron Pipe Cast Iron Pipe

  Cast Iron Pipe     Cast iron pipes can fail in many modes which in general can be summarized into two categories: loss of strength due to the reduction of wall thickness of the pipes, and loss of toughness due to the stress concentration at the tips…

  Cast Iron Pipe     Cast iron pipes can fail in many modes which in…

Gratis
Albacete
27-09-21
What is a rod seal?
What is a rod seal? What is a rod seal?

What is a rod seal? There are so many different types of seals out there that it might be hard to understand all the different terminologies and functions. In this article, we give you our guide to what rod seals are, how they are manufactured and why…

What is a rod seal? There are so many different types of seals out…

Gratis
London
27-09-21
Contact lenses: a look at the risks and recommendations
Contact lenses: a look at the risks and recommendations Contact lenses: a look at the…

Contact lenses: a look at the risks and recommendations Thanks to the existence of contact lenses, it can sometimes be impossible to tell if someone has a visual impairment or not. These lenses can make huge differences to the lives of their wearers,…

Contact lenses: a look at the risks and recommendations Thanks to…

Gratis
A Coruña
27-09-21
What Is A Seed Tray?
What Is A Seed Tray? What Is A Seed Tray?

What Is A Seed Tray? Starting your own plants from seed will often give you healthier plants at a lower cost.  If you want to start seeds in bulk, you may want to consider a seed tray to help with germination. So, what is a seed tray?  A seed…

What Is A Seed Tray? Starting your own plants from seed will often…

Gratis
A Coruña
27-09-21
Rethinking the bottle
Rethinking the bottle Rethinking the bottle

Rethinking the bottle     When I was younger, wine came in a glass bottle, and—outside of a few value-priced boxed options—that was that. But now, quality wine comes in all sorts of packaging: boxes, cans, pouches, even slim wine bottles that can fit…

Rethinking the bottle     When I was younger, wine came in a glass…

Gratis
A Coruña
27-09-21
What is a Ramadan crescent moon tree?
What is a Ramadan crescent moon tree? What is a Ramadan crescent…

What is a Ramadan crescent moon tree? One particular decor element that has taken root – and is quickly gaining ground in the region this year – is the crescent tree. Chances are you’ve come across it yourself: the artificial tree comes in a number of…

What is a Ramadan crescent moon tree? One particular decor element…

Gratis
London
27-09-21
Why stainless steel corrodes
Why stainless steel corrodes Why stainless steel corrodes

  Why stainless steel corrodes     Stainless steel has unique properties which can be taken advantage of in a wide variety of applications in the construction industry. This paper reviews how research activities over the last 20 years have impacted the…

  Why stainless steel corrodes     Stainless steel has unique…

Gratis
Albacete
27-09-21
Are stinky inflatable pool toys putting your kids at risk? 
Are stinky inflatable pool toys putting your kids at risk?  Are stinky inflatable pool…

Are stinky inflatable pool toys putting your kids at risk?  The researchers expressed concern that some of the products contain potentially hazardous chemicals that could pose a risk to children’s health, depending on the degree of exposure and…

Are stinky inflatable pool toys putting your kids at risk?  The…

Gratis
London
27-09-21
Wire Rope Slings
Wire Rope Slings Wire Rope Slings

Wire Rope Slings Wire rope is constructed of multiple strands of wire that are twisted and braided together to form a spiral design or helix. Once the separate wires are shaped into a solid form, they become a single wire with greater strength because…

Wire Rope Slings Wire rope is constructed of multiple strands of wire…

Gratis
London
27-09-21
What are the advantages of time recording machine in an office ?
What are the advantages of time recording machine in an office ? What are the advantages of…

  What are the advantages of time recording machine in an office ?     Showing up for work punctually, at an official time, became expected behavior toward the end of the 19th century, as more and more people worked for others rather than for…

  What are the advantages of time recording machine in an office ?  …

Gratis
A Coruña
27-09-21
Practical Uses of Botanicals in Skin Care
Practical Uses of Botanicals in Skin Care Practical Uses of Botanicals…

Practical Uses of Botanicals in Skin Care Cosmeceuticals are the fastest growing sector of the cosmetic industry, and the future of antiaging cosmeceuticals in particular is very promising. Botanical pesticide that support the health, texture, and…

Practical Uses of Botanicals in Skin Care Cosmeceuticals are the…

Gratis
A Coruña
27-09-21
Pipe Fittings
Pipe Fittings Pipe Fittings

Pipe Fittings This chapter presents various types of pipe fittings. Of all the fittings, the elbow is the one most often used. Simply put, the elbow, or ell, is used when a pipe changes direction. Elbows can turn up, down, left, right, or any angle in…

Pipe Fittings This chapter presents various types of pipe fittings.…

Gratis
London
27-09-21
All About Knitted Hats
All About Knitted Hats All About Knitted Hats

  All About Knitted Hats     Quarantine has sparked plenty of new at-home hobbies. Maybe you picked up a paintbrush and tapped into your inner artist. Or, you might have transformed your kitchen into a bakery. For some, perfecting their knitting and…

  All About Knitted Hats     Quarantine has sparked plenty of new…

Gratis
Albacete
27-09-21
Best smart bulbs for your connected home
Best smart bulbs for your connected home Best smart bulbs for your…

Best smart bulbs for your connected home Smart LED bulbs that can be controlled by a hub or smartphone app are no longer a new idea. What is new is how far this technology has come since its advent just a few years ago. Also new: Products like the…

Best smart bulbs for your connected home Smart LED bulbs that can be…

Gratis
A Coruña
27-09-21
How to Build a Boat Bench Seat? 
How to Build a Boat Bench Seat?  How to Build a Boat Bench…

How to Build a Boat Bench Seat?  DIY projects allow you to achieve the result that you desire. Utilizing your skills and artistic talents is related to this matter, and it’s also a way to save some bucks. With regards to this, many boaters can…

How to Build a Boat Bench Seat?  DIY projects allow you to…

Gratis
London
27-09-21
Effective cleaning of rust stained marble
Effective cleaning of rust stained marble Effective cleaning of rust…

  Effective cleaning of rust stained marble     Calcareous materials, like marble used in connection with cultural heritage objects such as statues and pedestals, or as wall facings on buildings, often show a brownish staining owing to contact with iron…

  Effective cleaning of rust stained marble     Calcareous…

Gratis
A Coruña
27-09-21
Recommended Lighting Kits for Photography
Recommended Lighting Kits for Photography Recommended Lighting Kits…

  Recommended Lighting Kits for Photography     If you follow some basic lighting principles, you can get impressive results from even the cheapest of motorcycle light combo kit. This is great news for businesses with smaller budgets or folks just…

  Recommended Lighting Kits for Photography     If you follow some…

Gratis
Alicante
27-09-21
Development of a Wireless Temperature Sensor Using Polymer-Derived Ceramics
Development of a Wireless Temperature Sensor Using Polymer-Derived Ceramics Development of a Wireless…

Development of a Wireless Temperature Sensor Using Polymer-Derived Ceramics Development of a Wireless Temperature Sensor Using Polymer-Derived Ceramics A temperature sensor has been developed using an embedded system and a sensor head made of…

Development of a Wireless Temperature Sensor Using Polymer-Derived…

Gratis
A Coruña
27-09-21
Understanding Pipe Fittings
Understanding Pipe Fittings Understanding Pipe Fittings

Understanding Pipe Fittings     Pipe fittings are components used to join pipe sections together with other fluid control products like valves and pumps to create pipelines. The common connotation for the term fittings is associated with the ones used…

Understanding Pipe Fittings     Pipe fittings are components used to…

Gratis
Albacete
27-09-21
Are Blankets the New Going-Out Accessory?
Are Blankets the New Going-Out Accessory? Are Blankets the New Going-Out…

Are Blankets the New Going-Out Accessory?     From Sarah Jessica Parker’s monogrammed Burberry poncho to Norma Kamali’s Sleeping Bag Coat, fashion has long embraced blanket-inspired styles. During a time when most socializing takes place outdoors, would…

Are Blankets the New Going-Out Accessory?     From Sarah Jessica…

Gratis
London
27-09-21
Environmental impacts of wooden, plastic, and wood-polymer composite pallet: a life cycle assessment approach
Environmental impacts of wooden, plastic, and wood-polymer composite pallet: a life cycle assessment approach Environmental impacts of…

Environmental impacts of wooden, plastic, and wood-polymer composite pallet: a life cycle assessment approach     Waste recycling is one of the essential tools for the European Union’s transition towards a circular economy. One of the possibilities for…

Environmental impacts of wooden, plastic, and wood-polymer composite…

Gratis
Albacete
27-09-21
The Science of LED Grow Lights for Your Indoor Garden
The Science of LED Grow Lights for Your Indoor Garden The Science of LED Grow Lights…

The Science of LED Grow Lights for Your Indoor Garden     Indoor Gardening isn’t exactly a new thing, but LED’s are changing the way we light our indoor gardens.  LED lights are more efficient than traditional fluorescent and incandescent…

The Science of LED Grow Lights for Your Indoor Garden     Indoor…

Gratis
Albacete
27-09-21
Lovely Homemade Gift Boxes
Lovely Homemade Gift Boxes Lovely Homemade Gift Boxes

When it comes to gifting things to the people we love, we are sure you won’t feel any surprise at all to learn that we’re massive fans of making things ourselves whenever we can. Of course, we also value the thought that goes into store bought gifts,…

When it comes to gifting things to the people we love, we are sure you…

Gratis
A Coruña
26-09-21
Full Spectrum LED Grow Lights: The Truth You Need to Know
Full Spectrum LED Grow Lights: The Truth You Need to Know Full Spectrum LED Grow…

  Full Spectrum LED Grow Lights: The Truth You Need to Know     Many LED lighting suppliers will say that full-spectrum LED grow lights are the best option for growing plants because they mimic the natural light from the sun. The argument goes:    …

  Full Spectrum LED Grow Lights: The Truth You Need to Know     Many…

Gratis
Albacete
26-09-21
The Best Garden Tillers According to Hyperenthusiastic Reviewers
The Best Garden Tillers According to Hyperenthusiastic Reviewers The Best Garden Tillers…

  The Best Garden Tillers According to Hyperenthusiastic Reviewers     Here at the Strategist, we like to think of ourselves as crazy (in the good way) about the stuff we buy, but as much as we’d like to, we can’t try everything. Which is why we have…

  The Best Garden Tillers According to Hyperenthusiastic Reviewers  …

Gratis
Alicante
26-09-21
Pruning Shears
Pruning Shears Pruning Shears

Pruning Shears     Flowers are harvested with sharp knives or electric pruning shear. On standard carnations two to three nodes and on spray carnations three to four nodes are left on the shoots for the next flowering. Flowers should be cut in the early…

Pruning Shears     Flowers are harvested with sharp knives or…

Gratis
Albacete
26-09-21
What to know about peptides for health
What to know about peptides for health What to know about peptides…

What to know about peptides for health     Peptides are smaller versions of proteins. Many health and cosmetic products contain different peptides for many uses, such as their potential anti-aging, anti-inflammatory, or muscle building properties.    …

What to know about peptides for health     Peptides are smaller…

Gratis
Alicante
26-09-21
Flexible ureteroscopy update: indications, instrumentation and technical advances
Flexible ureteroscopy update: indications, instrumentation and technical advances Flexible ureteroscopy update:…

Flexible ureteroscopy update: indications, instrumentation and technical advances     Retrograde ureteroscopy has recently gained a broadened indication for use from diagnostic to a variety of complex minimally invasive therapies. This review aims to…

Flexible ureteroscopy update: indications, instrumentation and…

Gratis
Albacete
26-09-21
What is a combiner box?
What is a combiner box? What is a combiner box?

What is a combiner box?     The role of the combiner box is to bring the output of several solar strings together. Daniel Sherwood, director of product management at SolarBOS, explained that each string conductor lands on a fuse terminal and the output…

What is a combiner box?     The role of the combiner box is to bring…

Gratis
Albacete
26-09-21
How are stand up pouches made?
How are stand up pouches made? How are stand up pouches made?

How are stand up pouches made?     A brief HISTORY     So what is a stand up pouch? Simply put, it’s bag/pouch that has the ability to stand on its own. The original stand up pouch design was actually patented in 1968. However, it wasn’t until the…

How are stand up pouches made?     A brief HISTORY     So what is a…

Gratis
A Coruña
26-09-21
A review on RO membrane technology: Developments and challenges
A review on RO membrane technology: Developments and challenges A review on RO membrane…

A review on RO membrane technology: Developments and challenges     Reverse osmosis (RO) based desalination is one of the most important and widely recognized technologies for production of fresh water from saline water. Since its conception and…

A review on RO membrane technology: Developments and challenges    …

Gratis
Alicante
26-09-21
Operator Essentials
Operator Essentials Operator Essentials

Operator Essentials     You’ve heard the term before; tactical backpack.  It’s hard to avoid, in fact.  It’s impossible to deny that “tactical” packs are a trend that isn’t going away any time soon in the carry world.  In fact, at this…

Operator Essentials     You’ve heard the term before; tactical…

Gratis
Albacete
26-09-21
Building efficiency begins with lighting design and controls in step with the space
Building efficiency begins with lighting design and controls in step with the space Building efficiency begins…

Building efficiency begins with lighting design and controls in step with the space     At the surface level, lighting is the application of light to spaces and simply serves as a prerequisite for visualization. However, because our impression of a…

Building efficiency begins with lighting design and controls in step…

Gratis
A Coruña
26-09-21
The Importance of Good Makeup Brushes
The Importance of Good Makeup Brushes The Importance of Good…

  The Importance of Good Makeup Brushes     All products and services featured are independently chosen by editors. However, WWD may receive a commission on orders placed through its retail links, and the retailer may receive certain auditable data for…

  The Importance of Good Makeup Brushes     All products and…

Gratis
London
26-09-21
28 Types of Fabrics and Their Uses
28 Types of Fabrics and Their Uses 28 Types of Fabrics and Their…

  28 Types of Fabrics and Their Uses     Deciding which type of fabric to make an item with is an important decision, as fabrics can have countless qualities. From natural to synthetic fibers and from knit to woven, here’s a look at different fabric…

  28 Types of Fabrics and Their Uses     Deciding which type of…

Gratis
A Coruña
26-09-21
How Electric Motors Work
How Electric Motors Work How Electric Motors Work

How Electric Motors Work Flick a switch and get instant power—how our ancestors would have loved electric motors! You can find them in everything from electric trains to remote-controlled cars—and you might be surprised how common they are. How many…

How Electric Motors Work Flick a switch and get instant power—how…

Gratis
London