text
stringlengths
0
73.6k
source
stringclasses
4 values
European Magnetic Field Laboratory-Mission-It is the mission of the EMFL to generate the highest possible magnetic fields for use in scientific research and make them available to the scientific community. The EMFL provides pulsed (in Toulouse and Dresden) as well as static magnetic fields (Grenoble and Nijmegen). A ca...
milkshake721/2.1M-wiki-STEM
European Magnetic Field Laboratory-The three laboratories-HFML (Nijmegen, The Netherlands) is operated by the Radboud University (RU) and the Dutch Research Council (NWO). Its director is Prof. Dr. Peter Christianen HLD (Dresden, Germany) is part of the Helmholtz-Zentrum Dresden-Rossendorf. Its director is Prof. Dr. Jo...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Fuse (electrical)-In electronics and electrical engineering, a fuse is an electrical safety device that operates to provide overcurrent protection of an electrical circuit. Its essential component is a metal wire or strip that melts when too much current flows through it, thereby stopping or interrupt...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Fuse (electrical)-Fuses have been used as essential safety devices from the early days of electrical engineering. Today there are thousands of different fuse designs which have specific current and voltage ratings, breaking capacity, and response times, depending on the application. The time and curre...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Fuse (electrical)-A fuse is an automatic means of removing power from a faulty system; often abbreviated to ADS (Automatic Disconnection of Supply). Circuit breakers can be used as an alternative to fuses, but have significantly different characteristics.
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-History-Breguet recommended the use of reduced-section conductors to protect telegraph stations from lightning strikes; by melting, the smaller wires would protect apparatus and wiring inside the building. A variety of wire or foil fusible elements were in use to protect telegraph cables and lighting ...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Construction-A fuse consists of a metal strip or wire fuse element, of small cross-section compared to the circuit conductors, mounted between a pair of electrical terminals, and (usually) enclosed by a non-combustible housing. The fuse is arranged in series to carry all the charge passing through the...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Construction-The fuse element is made of zinc, copper, silver, aluminum, or alloys among these or other various metals to provide stable and predictable characteristics. The fuse ideally would carry its rated current indefinitely, and melt quickly on a small excess. The element must not be damaged by ...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Construction-The fuse elements may be shaped to increase heating effect. In large fuses, current may be divided between multiple strips of metal. A dual-element fuse may contain a metal strip that melts instantly on a short circuit, and also contain a low-melting solder joint that responds to long-ter...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Construction-The fuse element may be surrounded by air, or by materials intended to speed the quenching of the arc. Silica sand or non-conducting liquids may be used.
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Characteristics-Rated current IN A maximum current that the fuse can continuously conduct without interrupting the circuit.
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Characteristics-Time vs current characteristics The speed at which a fuse blows depends on how much current flows through it and the material of which the fuse is made. Manufacturers can provide a plot of current vs time, often plotted on logarithmic scales, to characterize the device and to allow com...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Characteristics-The operating time is not a fixed interval but decreases as the current increases. Fuses are designed to have particular characteristics of operating time compared to current. A standard fuse may require twice its rated current to open in one second, a fast-blow fuse may require twice ...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Characteristics-Fuse selection depends on the load's characteristics. Semiconductor devices may use a fast or ultrafast fuse as semiconductor devices heat rapidly when excess current flows. The fastest blowing fuses are designed for the most sensitive electrical equipment, where even a short exposure ...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Characteristics-The I2t value The I2t rating is related to the amount of energy let through by the fuse element when it clears the electrical fault. This term is normally used in short circuit conditions and the values are used to perform co-ordination studies in electrical networks. I2t parameters ar...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Characteristics-Breaking capacity The breaking capacity is the maximum current that can safely be interrupted by the fuse. This should be higher than the prospective short-circuit current. Miniature fuses may have an interrupting rating only 10 times their rated current. Fuses for small, low-voltage, ...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Characteristics-Some fuses are designated high rupture capacity (HRC) or high breaking capacity (HBC) and are usually filled with sand or a similar material. Low-voltage high rupture capacity (HRC) fuses are used in the area of main distribution boards in low-voltage networks where there is a high pro...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Characteristics-Rated voltage The voltage rating of the fuse must be equal to or, greater than, what would become the open-circuit voltage. For example, a glass tube fuse rated at 32 volts would not reliably interrupt current from a voltage source of 120 or 230 V. If a 32 V fuse attempts to interrupt ...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Characteristics-Medium-voltage fuses rated for a few thousand volts are never used on low voltage circuits, because of their cost and because they cannot properly clear the circuit when operating at very low voltages.
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Voltage drop-The manufacturer may specify the voltage drop across the fuse at rated current. There is a direct relationship between a fuse's cold resistance and its voltage drop value. Once current is applied, resistance and voltage drop of a fuse will constantly grow with the rise of its operating te...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Temperature derating-Ambient temperature will change a fuse's operational parameters. A fuse rated for 1 A at 25 °C may conduct up to 10% or 20% more current at −40 °C and may open at 80% of its rated value at 100 °C. Operating values will vary with each fuse family and are provided in manufacturer da...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Markings-Most fuses are marked on the body or end caps with markings that indicate their ratings. Surface-mount technology "chip type" fuses feature few or no markings, making identification very difficult. Similar appearing fuses may have significantly different properties, identified by their markin...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Packages and materials-Fuses come in a vast array of sizes and styles to serve in many applications, manufactured in standardised package layouts to make them easily interchangeable. Fuse bodies may be made of ceramic, glass, plastic, fiberglass, molded mica laminates, or molded compressed fibre depen...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Packages and materials-While glass fuses have the advantage of a fuse element visible for inspection purposes, they have a low breaking capacity (interrupting rating), which generally restricts them to applications of 15 A or less at 250 VAC. Ceramic fuses have the advantage of a higher breaking capac...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Packages and materials-Fuse packages may include a rejection feature such as a pin, slot, or tab, which prevents interchange of otherwise similar appearing fuses. For example, fuse holders for North American class RK fuses have a pin that prevents installation of similar-appearing class H fuses, which...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Dimensions-Fuses can be built with different sized enclosures to prevent interchange of different ratings of fuse. For example, bottle style fuses distinguish between ratings with different cap diameters. Automotive glass fuses were made in different lengths, to prevent high-rated fuses being installe...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Fuse standards-IEC 60269 fuses The International Electrotechnical Commission publishes standard 60269 for low-voltage power fuses. The standard is in four volumes, which describe general requirements, fuses for industrial and commercial applications, fuses for residential applications, and fuses to pr...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Fuse standards-UL 248 fuses (North America) In the United States and Canada, low-voltage fuses to 1 kV AC rating are made in accordance with Underwriters Laboratories standard UL 248 or the harmonized Canadian Standards Association standard C22.2 No. 248. This standard applies to fuses rated 1 kV or l...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Fuse standards-The standard ampere ratings for fuses (and circuit breakers) in USA/Canada are considered 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, 100, 110, 125, 150, 175, 200, 225, 250, 300, 350, 400, 450, 500, 600, 700, 800, 1000, 1200, 1600, 2000, 2500, 3000, 4000, 5000, and 6000 amperes. Add...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Fuse standards-UL 248 currently has 19 "parts". UL 248-1 sets the general requirements for fuses, while the latter parts are dedicated to specific fuses sizes (ex: 248-8 for Class J, 248-10 for Class L), or for categories of fuses with unique properties (ex: 248-13 for semiconductor fuses, 248-19 for ...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Fuse standards-IEC and UL nomenclature varies slightly. IEC standards refer to a "fuse" as the assembly of a fusible link and a fuse holder. In North American standards, the fuse is the replaceable portion of the assembly, and a fuse link would be a bare metal element for installation in a fuse.
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Automotive fuses-Automotive fuses are used to protect the wiring and electrical equipment for vehicles. There are several different types of automotive fuses and their usage is dependent upon the specific application, voltage, and current demands of the electrical circuit. Automotive fuses can be moun...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Automotive fuses-Automotive fuses can be classified into four distinct categories: Blade fuses Glass tube or Bosch type Fusible links Fuse limitersMost automotive fuses rated at 32 volts are used on circuits rated 24 volts DC and below. Some vehicles use a dual 12/42 V DC electrical system that will r...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-High voltage fuses-Fuses are used on power systems up to 115,000 volts AC. High-voltage fuses are used to protect instrument transformers used for electricity metering, or for small power transformers where the expense of a circuit breaker is not warranted. A circuit breaker at 115 kV may cost up to f...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-High voltage fuses-Medium-voltage fuses are also used to protect motors, capacitor banks and transformers and may be mounted in metal enclosed switchgear, or (rarely in new designs) on open switchboards.
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-High voltage fuses-Expulsion fuses Large power fuses use fusible elements made of silver, copper or tin to provide stable and predictable performance. High voltage expulsion fuses surround the fusible link with gas-evolving substances, such as boric acid. When the fuse blows, heat from the arc causes ...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-High voltage fuses-These type of fuses may have an impact pin to operate a switch mechanism, so that all three phases are interrupted if any one fuse blows. High-power fuse means that these fuses can interrupt several kiloamperes. Some manufacturers have tested their fuses for up to 63 kA short-circui...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Comparison with circuit breakers-Fuses have the advantages of often being less costly and simpler than a circuit breaker for similar ratings. The blown fuse must be replaced with a new device which is less convenient than simply resetting a breaker and therefore likely to discourage people from ignori...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Comparison with circuit breakers-High rupturing capacity fuses can be rated to safely interrupt up to 300,000 amperes at 600 V AC. Special current-limiting fuses are applied ahead of some molded-case breakers to protect the breakers in low-voltage power circuits with high short-circuit levels. Current...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Fuse boxes-United Kingdom In the UK, older electrical consumer units (also called fuse boxes) are fitted either with semi-enclosed (rewirable) fuses (BS 3036) or cartridge fuses (BS 1361). (Fuse wire is commonly supplied to consumers as short lengths of 5 A-, 15 A- and 30 A-rated wire wound on a piece...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Fuse boxes-Renewable fuses (rewirable or cartridge) allow user replacement, but this can be hazardous as it is easy to put a higher-rated or double fuse element (link or wire) into the holder (overfusing), or simply fitting it with copper wire or even a totally different type of conducting object (coi...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Fuse boxes-UK fuse boxes and rewirable fuses The Wylex standard consumer unit was very popular in the United Kingdom until the wiring regulations started demanding residual-current devices (RCDs) for sockets that could feasibly supply equipment outside the equipotential zone. The design does not allow...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Fuse boxes-North America In North America, fuses were used in buildings wired before 1960. These Edison base fuses would screw into a fuse socket similar to Edison-base incandescent lamps. Ratings were 5, 10, 15, 20, 25, and 30 amperes. To prevent installation of fuses with an excessive current rating...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Fuse boxes-Some companies manufacture resettable miniature thermal circuit breakers, which screw into a fuse socket. Some installations use these Edison-base circuit breakers. However, any such breaker sold today does have one flaw. It may be installed in a circuit-breaker box with a door. If so, if t...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Fuse boxes-Fuses are widely used for protection of electric motor circuits; for small overloads, the motor protection circuit will open the controlling contactor automatically, and the fuse will only operate for short circuits or extreme overload.
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Coordination of fuses in series-Where several fuses are connected in series at the various levels of a power distribution system, it is desirable to blow (clear) only the fuse (or other overcurrent device) electrically closest to the fault. This process is called "coordination" or "discrimination" and...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Coordination of fuses in series-Where the fuses in a system are of similar types, simple rule-of-thumb ratios between ratings of the fuse closest to the load and the next fuse towards the source can be used.
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Other circuit protectors-Resettable fuses So-called self-resetting fuses use a thermoplastic conductive element known as a polymeric positive temperature coefficient (PPTC) thermistor that impedes the circuit during an overcurrent condition (by increasing device resistance). The PPTC thermistor is sel...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Other circuit protectors-Thermal fuses A thermal fuse is often found in consumer equipment such as coffee makers, hair dryers or transformers powering small consumer electronics devices. They contain a fusible, temperature-sensitive composition which holds a spring contact mechanism normally closed. W...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Other circuit protectors-Cable limiter A cable limiter is similar to a fuse but is intended only for protection of low voltage power cables. It is used, for example, in networks where multiple cables may be used in parallel. It is not intended to provide overload protection, but instead protects a cab...
milkshake721/2.1M-wiki-STEM
Fuse (electrical)-Unicode symbol-The Unicode character for the fuse's schematic symbol, found in the Miscellaneous Technical block, is U+23DB (⏛).
milkshake721/2.1M-wiki-STEM
Sensorimotor rhythm-Sensorimotor rhythm-The sensorimotor rhythm (SMR) is a brain wave. It is an oscillatory idle rhythm of synchronized electric brain activity. It appears in spindles in recordings of EEG, MEG, and ECoG over the sensorimotor cortex. For most individuals, the frequency of the SMR is in the range of 13 t...
milkshake721/2.1M-wiki-STEM
Sensorimotor rhythm-Meaning-The meaning of SMR is not fully understood. Phenomenologically, a person is producing a stronger SMR amplitude when the corresponding sensorimotor areas are idle, e.g. during states of immobility. SMR typically decreases in amplitude when the corresponding sensory or motor areas are activate...
milkshake721/2.1M-wiki-STEM
Sensorimotor rhythm-Relevance in research-Neurofeedback Neurofeedback training can be used to gain control over the SMR activity. Neurofeedback practitioners believe that this feedback enables the subject to learn the regulation of their own SMR. People with learning difficulties, ADHD, epilepsy, and autism may benefit...
milkshake721/2.1M-wiki-STEM
Dust bathing-Dust bathing-Dust bathing (also called sand bathing) is an animal behavior characterized by rolling or moving around in dust, dry earth or sand, with the likely purpose of removing parasites from fur, feathers or skin. Dust bathing is a maintenance behavior performed by a wide range of mammalian and avian ...
milkshake721/2.1M-wiki-STEM
Dust bathing-Birds-Birds crouch close to the ground while taking a dust bath, vigorously wriggling their bodies and flapping their wings. This disperses loose substrate into the air. The birds spread one or both wings which allows the falling substrate to fall between the feathers and reach the skin. The dust bath is o...
milkshake721/2.1M-wiki-STEM
Dust bathing-Birds-The California quail is a highly sociable bird; one of their daily communal activities is a dust bath. A group of quail will select an area where the ground has been freshly turned or is soft. Using their underbellies, they burrow downward into the soil about 2–5 cm (1–2 in). They then wriggle about ...
milkshake721/2.1M-wiki-STEM
Dust bathing-Birds-Birds without a uropygial gland (e.g., the emu, kiwi, ostrich and bustard) rely on dust bathing to keep their feathers healthy and dry.
milkshake721/2.1M-wiki-STEM
Dust bathing-Domestic chicken-Dust bathing has been extensively studied in the domestic hen. In normal dust bathing, the hen initially scratches and bill-rakes at the ground, then erects her feathers and squats. Once lying down, the behavior contains four main elements: vertical wing-shaking, head rubbing, bill-raking ...
milkshake721/2.1M-wiki-STEM
Dust bathing-Domestic chicken-Preferences for substrate Hens exhibit preferences for dust bathing substrate. When given a choice between wood shavings, lignocellulose (soft wood fibre, pelleted), Astroturf mat without substrate, or food particles, the time spent dust bathing and number of dust baths were higher in lign...
milkshake721/2.1M-wiki-STEM
Dust bathing-Domestic chicken-Motivation Dust bathing is motivated by complex interactions between internal factors which build up over time, peripheral factors relating to the skin and feathers, and external factors, such as the sight of a dusty substrate. Internal factors The tendency to dust bathe fluctuates accordi...
milkshake721/2.1M-wiki-STEM
Dust bathing-Domestic chicken-Peripheral factors Peripheral factors seem relatively unimportant in controlling dust bathing. Deprivation of dust bathing results in an increase in lipids on the feathers and a subsequent increase in dust bathing activity when this is allowed. However, although it has been speculated that...
milkshake721/2.1M-wiki-STEM
Dust bathing-Domestic chicken-External factors Environmental temperature is an important external factor; the frequency of dust bathing is greater at 22 °C (72 °F) than at 10 °C (50 °F). Addition of supplementary visible light also increases components of dust bathing, and when hens are individually housed, the presenc...
milkshake721/2.1M-wiki-STEM
Dust bathing-Domestic chicken-Sham dustbathing Battery cages for domestic egg-laying hens usually have no dust bathing substrate. This is considered to be a welfare concern and as a consequence, dust bathing has been closely studied in domestic egg-laying hens. In the absence of substrate in cages, hens often perform s...
milkshake721/2.1M-wiki-STEM
Dust bathing-Mammals-Many mammals roll in sand or dirt, presumably to keep parasites away or to help dry themselves after exercise or becoming wet. A sand roll, which is a stall or yard covered with deep sand, is traditionally included as part of stable complexes for use by racehorses after exercise.Dust bathing has be...
milkshake721/2.1M-wiki-STEM
Urethroplasty-Urethroplasty-Urethroplasty is the surgical repair of an injury or defect within the walls of the urethra. Trauma, iatrogenic injury and infections are the most common causes of urethral injury/defect requiring repair. Urethroplasty is regarded as the gold standard treatment for urethral strictures and of...
milkshake721/2.1M-wiki-STEM
Urethroplasty-Phases of the operation-These parts of the operation are common to all specific operations.
milkshake721/2.1M-wiki-STEM
Urethroplasty-Phases of the operation-Preoperative Ideally, the patient will have undergone urethrography to visualize the positioning and length of the defect. The normal pre-surgical testing/screening (per the policies of the admitting hospital, anesthesiologist, and urological surgeon) will be performed, and the pat...
milkshake721/2.1M-wiki-STEM
Urethroplasty-Phases of the operation-Operative The patient will be transported to the operating room and the procedures for induction of the type of anesthesia chosen by both the patient and medical staff will be started. The subject area will be prepped by shaving, application of an antiseptic wash (usually povidone ...
milkshake721/2.1M-wiki-STEM
Urethroplasty-Types of operations-The choice of procedure is dependent on factors including: physical condition of the patient overall condition of the remainder of the urethra (not affected by the stricture) the length of the defect (best determined by urethrography) multiple or misaligned strictures anatomical positi...
milkshake721/2.1M-wiki-STEM
Urethroplasty-Types of operations-Anastomotic urethroplasty In this single-stage procedure the urethra will be visualized (in the area of the defect), and the incision will be started at its mid-line (usually) using a bovie knife to dissect the dermal and sub-dermal layers until the associated musculature, corpus caver...
milkshake721/2.1M-wiki-STEM
Urethroplasty-Types of operations-Buccal mucosal onlay graft of the ventral urethra In this single-stage procedure the urethra will be visualized (in the area of the defect), and the incision will be started at its mid-line (usually) using a bovie knife to dissect the dermal and sub-dermal layers until the associated m...
milkshake721/2.1M-wiki-STEM
Urethroplasty-Types of operations-(a) At this time, some surgeons prefer to insert a safety guide (as used in urethrotomy) from the urinary meatus, through the stricture, and into the bladder for purposes of maintaining positioning. (b) some surgeons prefer the use of a suprapubic catheter, as they believe insertion of...
milkshake721/2.1M-wiki-STEM
Urethroplasty-Types of operations-Expected average success rate: The success rate for this procedure is between 87 and 98%, buccal mucosal onlay urethroplasty is considered the best of repair options for strictures greater than 2 cm in length. Within recent years, surgeons have been applying the onlay to the dorsal asp...
milkshake721/2.1M-wiki-STEM
Urethroplasty-Types of operations-Scrotal or penile island flap (graft) of the ventral urethra In this single-stage procedure the urethra will be visualized (in the area of the defect), and the incision will be started at its mid-line (usually) using a bovie knife to dissect the dermal and sub-dermal layers until the a...
milkshake721/2.1M-wiki-STEM
Urethroplasty-Types of operations-(a) At this time, some surgeons prefer to insert a safety guide (as used in urethrotomy) from the urinary meatus, through the stricture, and into the bladder for purposes of maintaining positioning.
milkshake721/2.1M-wiki-STEM
Urethroplasty-Types of operations-(b) some surgeons prefer the use of a suprapubic catheter, as they believe insertion of an in-dwelling urethral catheter may damage the surgically repaired area Expected average success rate: The success rate for this procedure is between 70% and 85%, scrotal or penile island flap uret...
milkshake721/2.1M-wiki-STEM
Urethroplasty-Types of operations-Johansen's urethroplasty The Johansen's procedure sometimes referred to as "Johanson's urethroplasty" is a two-stage procedure which was developed during the 1950s and 1960s by Swedish surgeon Dr. Bengt Johansen, and was originally designed as a surgical repair for hypospadias. Over th...
milkshake721/2.1M-wiki-STEM
Urethroplasty-Post-procedural care-Constant monitoring of vital signs including pulse oximetry, cardiac monitoring (ECG), body temperature and blood pressure are carried out by the anesthesia practitioner until the patient is discharged post-operatively to the post-surgical recovery unit. After sufficient awakening fro...
milkshake721/2.1M-wiki-STEM
Urethroplasty-Possible post surgical complications-Note: Urethroplasty is generally well tolerated with a high rate of success, serious complications occur in fewer than ten percent of patients though complications particularly recurrences are commoner in long and complex strictures.
milkshake721/2.1M-wiki-STEM
Urethroplasty-Possible post surgical complications-recurrence of the stricture infection urinary incontinence (symptoms of incontinence often improve over time with strengthening exercises) urinary retention requiring intermittent catheterization to completely empty the urinary bladder erectile dysfunction loss of peni...
milkshake721/2.1M-wiki-STEM
Urethroplasty-Research-Urethrotomy vs. urethroplasty Comparing the two surgical procedures, a UK trial found that both urethrotomy and urethroplasty are effective in treating urethral stricture in the bulbar region. At the same time the more invasive urethroplasty had longer-lasting benefit and was associated with fewe...
milkshake721/2.1M-wiki-STEM
Frozen banana-Frozen banana-Frozen bananas are desserts made by placing a banana upon a stick, freezing it, and usually dipping it in melted chocolate or yogurt. They may be covered with toppings such as chopped nuts, sprinkles, sugar and crushed cookies.
milkshake721/2.1M-wiki-STEM
Frozen banana-History-Don Phillips, also known as the frozen banana king, opened the first frozen banana stand - The Original Frozen Banana - on Balboa Peninsula, located in Orange County, California, circa 1940. In 1963, Bob Teller, who moved to the area with plans to manufacture car seat belts, instead opened a froze...
milkshake721/2.1M-wiki-STEM
Frozen banana-Cultural references-In the Fox television series Arrested Development, set in Orange County, the Bluth Company owns and runs a frozen banana stand.
milkshake721/2.1M-wiki-STEM
Building maintenance unit-Building maintenance unit-A building maintenance unit (BMU) is an automatic, remote-controlled, or mechanical device, usually suspended from the roof, which moves systematically over some surface of a structure while carrying human window washers or mechanical robots to maintain or clean the c...
milkshake721/2.1M-wiki-STEM
Logical relations-Logical relations-Logical relations are a proof method employed in programming language semantics to show that two denotational semantics are equivalent.
milkshake721/2.1M-wiki-STEM
Logical relations-Logical relations-To describe the process, let us denote the two semantics by [[−]]i , where i=1,2 . For each type A , there is a particular associated relation ∼ between [[A]]1 and [[A]]2 . This relation is defined such that for each program phrase M , the two denotations are related: [[M]]1∼...
milkshake721/2.1M-wiki-STEM
Gap wedge-Gap wedge-In golf, a gap wedge, also known as an approach wedge, is a wedge used to hit a shot with higher and shorter trajectory than a pitching wedge and lower and longer trajectory than a sand wedge. The name derives from the club's design to fill the "gap" between sand and pitching wedges.
milkshake721/2.1M-wiki-STEM
Gap wedge-History-Over time the loft angle on irons in matched sets has been reduced for multiple reasons. Manufacturers, always wanting to advertise longer distances than their competitors, sometimes "cheat" by de-lofting their iron sets by a degree or two compared to their competitor's set, producing between 2-5 yard...
milkshake721/2.1M-wiki-STEM
Gap wedge-History-As a result, some players who had upgraded to these newer de-lofted iron sets began carrying the pitching wedge of an older set, lofted around 50-52°, to "fill the gap". This additional wedge, with a full swing, falls between the average distances of a sand and pitching wedge, allowing the player to f...
milkshake721/2.1M-wiki-STEM
Gap wedge-Design-Gap wedges are loosely defined, but typically have the loft between that of a pitching wedge and sand wedge, between 50 and 54 degrees. At the extremes there is redundancy with either the pitching wedge (typically 48°) or the sand wedge (typically 56°), however some players will "fine-tune" the lofts o...
milkshake721/2.1M-wiki-STEM
Gap wedge-Design-Within the range of lofts seen in gap wedges, the angle that the sole makes to the ground at address, also known as the club's "bounce angle", varies from 0° up to 12° or more. Lower lofts typically benefit from a lower bounce angle, suiting their use as effectively an "11-iron" for shots from firmer l...
milkshake721/2.1M-wiki-STEM
Gap wedge-Design-The relation between actual loft and bounce can change based on how the player addresses the ball; the more forward the ball, and the more open the clubface, the higher the effective loft and bounce angles. Some clubmakers will vary the amount of bounce that the sole has from toe to heel, allowing the ...
milkshake721/2.1M-wiki-STEM
Gap wedge-Design-There is little consistency in labeling gap wedges; most manufacturers simply label the wedge with its angle, optionally including additional information about the amount of bounce (sometimes the angle measure, more often a series of one to three dots indicating "low", "medium" and "high" bounce). Some...
milkshake721/2.1M-wiki-STEM
Gap wedge-Controversy-The necessity of the gap wedge is contested by some golfers and clubfitters, who assert that this additional wedge would not be necessary if clubmakers had not de-lofted the clubs in the first place as a marketing move, to attract amateurs looking for more distance from each number. In addition, m...
milkshake721/2.1M-wiki-STEM
Gap wedge-Controversy-For their part, clubmakers contest that the modern golfer demands customization; wedges (including gap wedges) are available in many combinations of loft and bounce angle, allowing the player to choose exactly the combination they find most useful. Including a 52-degree mid-bounce wedge in a match...
milkshake721/2.1M-wiki-STEM
Ladinin 1-Ladinin 1-Ladinin-1 is a protein that in humans is encoded by the LAD1 gene.The protein encoded by this gene may be an anchoring filament that is a component of basement membranes. It may contribute to the stability of the association of the epithelial layers with the underlying mesenchyme.
milkshake721/2.1M-wiki-STEM
Trichilemmal cyst-Trichilemmal cyst-A trichilemmal cyst (or pilar cyst) is a common cyst that forms from a hair follicle, most often on the scalp, and is smooth, mobile, and filled with keratin, a protein component found in hair, nails, skin, and horns. Trichilemmal cysts are clinically and histologically distinct from...
milkshake721/2.1M-wiki-STEM
Trichilemmal cyst-Classification-Trichilemmal cysts may be classified as sebaceous cysts, although technically speaking are not sebaceous. "True" sebaceous cysts, which originate from sebaceous glands and which contain sebum, are relatively rare and are known as steatocystoma simplex or, if multiple, as steatocystoma m...
milkshake721/2.1M-wiki-STEM