• دوشنبه تا شنبه: 10:00 - 16:00 / یکشنبه تعطیل است

Quarter Wave Dual Band VHF/UHF Ham Radio Antenna by

Mhz so it can generally covers the whole VHF amateur band. -Connect a SWR meter to the antenna and to the radio, making sure you attached it to the right connector posts. -Take a SWR reading, and if it is beyond 1.5, cut the 19.5" VHF element rod 1/8" at a time until the readings is in between 1-1.5. -. -Theoretically, a reading of 1 is the ...

به خواندن ادامه دهید

Wire Rod | CMC

Wire rod is a hot-rolled round produced in coil form that is typically drawn into wire for use in a wide variety of construction and industrial applications. CMC Steel produces wire rod in Jacksonville, Florida. The coil weight is approximately 2,600 pounds. Wire rod products. Wire rod – coil Mesh quality; Industrial quality; Plating quality

به خواندن ادامه دهید

ArcelorMittal (MT) Decarbonizes With New Electric Arc Furnace

November 30, 2023 — 11:49 am EST. Written by Zacks Equity Research for Zacks ->. ArcelorMittal MT Asturias signed a contract with industrial engineering firm Sarralle to construct a new electric ...

به خواندن ادامه دهید

The effect of different screw-rod design on the anti-rotational …

screw-rod construct was larger than that of RF-F-10, and the USSII screw-rod construct was the lowest (Fig. 4). Discussion Adolescent idiopathic scoliosis (AIS) is a complex 3D anomaly of the spine. Deformity in a single plane does not develop in isolation; rather, it is dependent on the co-development of curvature, translation, and rotation

به خواندن ادامه دهید

Dorsal Thoracic and Lumbar Simple Hook-Rod, Wire, and Wire-Rod

Chapter 149 Dorsal Thoracic and Lumbar Simple Hook-Rod, Wire, and Wire-Rod Techniques Paul Kim, Bernardo Jose Ordonez The first internal fixation device was designed by Harrington in 1947, a period in which the number of patients with poliomyelitis-induced scoliosis was growing, and there was dissatisfaction with the …

به خواندن ادامه دهید

Creating an Electromagnet

With the Students: Building an Electromagnet. Make sure each student pair has the following materials: 1 nail, 2 feet (.6 m) of insulated wire, 1 D-cell battery, several paperclips (or tacks or pins) and a rubber band. Wrap the wire around a nail at least 20 times (see Figure 4).

به خواندن ادامه دهید

3 Ways to Build Antennas

Download Article. 1. Cut 8 pieces of copper wire that are each 17 inches (43 cm). Get 12-gauge uninsulated copper wire to make your antenna. Measure out 8 separate pieces that are 17 inches (43 cm) long …

به خواندن ادامه دهید

Copper | KGHM Corporate Website

Contact via the website or by phone at +48 76 74 78 80. MANUFACTURER. The "Cedynia" Copper Smelter Division of KGHM Polska Miedź S.A in Orsk produces the copper wire rod using the continuous melting, casting, and rolling method. The production program includes diameters of 8 mm ± 0.4 mm and 10 mm ± 0.4 mm.

به خواندن ادامه دهید

How to Build Several Easy Antennas for Amateur Radio

Don't forget to use adequate lengths of rope, or safety cord for this project. You can use PVC pipe here as an insulator. Cut 3 or 4 pieces of 1 1⁄2 inch (3.8 cm) PVC pipe about 6 or 7 inches (15.2 or 17.8 cm) long. Drill 1⁄2 inch (1.3 cm) holes using a good drill bit, and never drill close to the end of the pipe.

به خواندن ادامه دهید

How is Wire Made?

Wire is a single, flexible component or rod of metal used to bear mechanical loads or electricity and telecommunication signals. The first use of wire dates back to the introduction of jewelry in Egypt during the second millennium B.C. Cylindrical strands of metal, assumed to be evidence of wire, has been found in archaeological sites for as ...

به خواندن ادامه دهید

Estimated Costs for Livestock Fencing | Ag Decision Maker

An alternative is to set posts 30 feet apart and place two stay rods in the wire between each set of posts. Cost would be reduced about $85 for every 1,320 feet of fence, or $0.064 per foot. High-tensile electrified wire fence. The high tensile electrified fence (see Table 4) uses five strands of 12.5 gauge high tensile wire with three charged ...

به خواندن ادامه دهید

Postoperative Spinal CT: What the Radiologist Needs to Know

The core component of a growing rod construct is the actuator, which is wider than the proximal and distal rod components. The actuator houses the internal magnet and distraction mechanism of the rod. ... wire mesh, high-porosity surfaces, fixation screws, and surface coatings made of plasma-sprayed titanium, aluminum oxide, hydroxyapatite, and ...

به خواندن ادامه دهید

Lake Michigan Wire

Farm & Garden > Hobby Toy > Plastic Injection/Insert Molding > Metal Stamping > Office Furniture > Wether you need straighten and cut wire, knurled pins or chamfered rods, wire forming or wire assemblies, Lake …

به خواندن ادامه دهید

Build Your Own Crystal Radio | Science Project

The two wires leaving the left side of the picture connect to the ground rod and antenna respectively. Attach the audio amplifier to your crystal radio. Slide the battery cover off the back of the amplifier (in the direction of the arrow), and install a …

به خواندن ادامه دهید

Principles of External Fixation

– Wire and half pin clamps – Half rings – Rods – Struts – Motors and hinges Rockwood and Green, 6th ed. Fig. 7-6 p. 260 Frame strength increased with decreasing ring size and increasing wire tension and size

به خواندن ادامه دهید

Build an Electromagnet – The Wonders of Physics – UW–Madison

Insulated copper wire with ends stripped; Large iron nail; Small paper clips or staples; Try This: Wrap the copper wire around the nail and touch the ends of the wire to the battery. Be careful to always wrap the wire in the same direction. Wrap it as tightly as you can. Try to pick up the paper clips. Does it work? Be careful, the battery may ...

به خواندن ادامه دهید

Steel Rods

Manufacturers produce steel rods from low-carbon steel wire rods. These wire rods are made by melting iron ore pellets at high temperatures and then re-solidifying them. The rods have a tensile strength between 36,000 PSI (240MPa) and 44,000 PSI (300 MPa). Additionally, they are resistant to rust, thanks to the zinc coating applied during ...

به خواندن ادامه دهید

3 Ways to Make Table Lamps : 15 Steps (with Pictures)

Wire the socket by connecting Hot/smooth wire to the Hot/brass screw terminal and the Neutral/ribbed wire to the Neutral/silver one. For a complete wiring how-to, visit Lesson 3 of my Lamps Class. Snap the socket shell into place. Test your connections using a continuity tester or multimeter. Be super proud!! You just made a really sweet table ...

به خواندن ادامه دهید

How to Make an Electromagnet: 14 Steps (with Pictures)

2. Curl the ends of the wire to create a small circle. Use your fingers to bend the ends of the wire into a very small circle, about 0.5 cm (0.20 in) in diameter. These circles will touch the …

به خواندن ادامه دهید

Development of High-Strength Steel Wire with Superior …

tains data on the Class B piano wire, a conventional high-strength steel wire made by drawing an SWRS82B wire rod (JIS SWP-B standards for steel wires) using the same draw-ing machine as for drawing the new steel wire. This figure clearly shows that the work-hardening rate and ultimate strength of the new steel wire were almost equal to those

به خواندن ادامه دهید

A new lumbar posterior fixation system, the memory metal spinal …

The transverse connecting bridge is a device which is fixed between two polyaxial pedicle screws to produce a stable, rigid construct used to hold the spinal rod in place. This rigid construct aids the transfer of correctional forces from the rod to the vertebrae. The flexibility of the system comes from the rod and not the connector or screws.

به خواندن ادامه دهید

Spinal fusion-hardware construct: Basic concepts and imaging …

Anterior instrumentation may use either rod-screw or plate-screw systems to form a spinal construct. The anterior approach is generally preferred in the cervical spine (commonly known as anterior cervical diskectomy and fusion or ACDF) because of the risk of cord manipulation associated with a posterior approach at this level.

به خواندن ادامه دهید

Harrington Rod

The distraction rod was eventually modified by increasing the rod diameter and changing to a ratcheting hook mechanism, and the location of the hook sites was adjusted by placing the rostral hooks three levels above the injury level and the caudal hooks two levels below. 230 With these modifications, the Harrington rod construct became the ...

به خواندن ادامه دهید

Leaning Italy tower

6 hours agoOne of Bologna's famous "twin towers" which dominate the city center, the 48-meter (158 feet) Garisenda was built in the 12th century when Bologna was a mini Manhattan, with dozens of towers ...

به خواندن ادامه دهید

Repair of spondylolysis using a pedicle screw U-shaped rod construct…

Kakiuchi reported that of pars defects united when the pars defect was bridged with a rod attached by a cephalic pedicle screw and a caudal laminar hook in combination with bone grafting. Other authors have reported the usage of pedicle screws to secure the lamina with either a rod-hook construct or a V-shaped rod under the …

به خواندن ادامه دهید

How do you make and install a lightning rod?

Those negatively charged ions want the smoothest possible path to positive ions, so commercial lightning protection technology features pointy rods or radiating metal fingers. As the electrical current begins to flow through the lightning rod, it must be conducted away from the structure on which the rod is installed, usually through a cable ...

به خواندن ادامه دهید

How To Make a Simple Powerful AM Loop Antenna For Free

The twin wire lamp cord was separated and one wire clamped to the power pole ground stake….any clean pipe, rod. aluminum ski pole, etc. will work in moist ground, the river is 59f' away… My antenna is strung between 2 trees about as high as I could pitch a rock with fishing line attached… for mountain AM, height is good…and the cabin ...

به خواندن ادامه دهید

Wire Rod Production Process

The production of wire rod is a precise and high-tech process in which raw materials are processed into high-quality wire that plays a crucial role in various industries. This …

به خواندن ادامه دهید

Wire Rod Products

Steel wire rod is produced by reducing a hot-rolled billet into a wire rod coil. It can be created using the carbon, alloy, or stainless-steel grade of your choice. Steel wire rod …

به خواندن ادامه دهید

16.2: Galvanic cells and Electrodes

An electrode reaction refers to the net oxidation or reduction process that takes place at an electrode. This reaction may take place in a single electron-transfer step, or as a succession of two or more steps. The substances that receive and lose electrons are called the electroactive species.

به خواندن ادامه دهید