Many different energy sources can be used for welding, including a gas flame, an electric arc, a laser, an electron beam, friction, and ultrasound.

Many gold nuggets are formed by cold welding in nature since gold has no protective oxide skin to inhibit junction formation.

Many igimbrites are loose, unconsolidated deposits, but some exhibit welding, giving the ignimbrite the texture of a solid rock mass, hence the terms commonly used to describe these examples: welded tuff and welded ashflow.

Many everyday items are either created or packaged using ultrasonic welding techniques.

Many experiments and innumerable practical applications of electron beam in welding technology prove that the resulting effect of the beam, i. e. the size and shape of the zone influenced by the beam depends on:

Many industries use GTAW for welding thin workpieces, especially nonferrous metals.

Many processes are close to adiabatic and can be easily approximated by using an adiabatic assumption, but there is always some heat loss ; as no perfect insulators exist.

Many catalytic processes, especially those used in organic synthesis, require so called " late transition metals ", which include palladium, platinum, gold, ruthenium, rhodium, and iridium.

Many fine chemicals are prepared via catalysis ; methods include those of heavy industry as well as more specialized processes that would be prohibitively expensive on a large scale.

Many such short processes involve a few changes to traditional methods, including smaller, more homogenized pieces in the compost, controlling carbon to nitrogen ( CN ) ratio at 30 to 1 or less, and monitoring the moisture level more carefully.

Many important processes involve photochemistry.

Many processes for software development were in their infancy, with few standard or " best practice " approaches defined.

Many overlapping methods and processes can be seen when comparing Product design, Industrial design and Engineering.

Many processes designed to preserve food will involve a number of food preservation methods.

Many chemical pickling processes also involve heating or boiling so that the food being preserved becomes saturated with the pickling agent.

Many inductors used in radio applications ( usually less than 100 MHz ) use adjustable cores in order to tune such inductors to their desired value, since manufacturing processes have certain tolerances ( inaccuracy ).

Many polyketides are cyclic molecules whose backbones are often further modified by glycosylation, methylation, hydroxylation, oxidation, and / or other processes.

Many innovations and technical refinements have been made in printing processes and presses over the years, including the development of presses with multiple units ( each containing one printing plate ) that can print multi-color images in one pass on both sides of the sheet, and presses that accommodate continuous rolls ( webs ) of paper, known as web presses.

Many observations have indicated that programmed cell death plays a considerable role during physiological processes of multicellular organisms, particularly during embryogenesis and metamorphosis.

Many properties of neurons, from the type of neurotransmitters used to ion channel composition, are maintained across species, allowing scientists to study processes occurring in more complex organisms in much simpler experimental systems.

Many catabolic biochemical processes, such as glycolysis, the citric acid cycle, and beta oxidation, produce the reduced coenzyme NADH.

Many abstractions, including eternal objects, are potential ingredients of processes.

Many technological processes produce unwanted by-products, known as pollution, and deplete natural resources, to the detriment of the Earth and its environment.

Many thermodynamic processes can be modeled by compound or composite systems, consisting of several or many contiguous component simple systems, initially not in thermodynamic equilibrium, but allowed to transfer mass and energy between them.

Many industrial processes rely on reactions using chemicals dissolved in water, suspension of solids in water slurries or using water to dissolve and extract substances.

Many legal and taxation processes culminated in this decade that led to the formation of Tax Havens and Corporate Havens throughout the developed world.

Many underlying processes, such as collision detection and network processing, run at different or inconsistent frequencies or in different physical components of a computer.

Many naturally-occurring radioisotopes ( another 51 or so, for a total of about 339 ) exhibit still shorter half-lives than 80 million years, but they are made freshly, as daughter products of decay processes of primordial nuclides ( for example, radium from uranium ) or from ongoing energetic reactions, such as cosmogenic nuclides produced by present bombardment of Earth by cosmic rays ( for example, carbon-14 made from nitrogen ).

Many of his works discuss ethical aspects of industrial inventions and processes already anticipated in the first half of the 20th century.

Many Green party constitutions are configured to prevent the party bureaucracy from accumulating too much power in the organization, in favor of more decentralized or member driven processes.

Many arguments from morality are based on morality normativity, which suggest that objective moral truths exist and require God's existence to give them authority.

Many biennials require a cold treatment, or vernalization, before they will flower.

Many barter exchanges require that one register as a business.

Many computer languages require garbage collection, either as part of the language specification ( e. g., Java, C #, and most scripting languages ) or effectively for practical implementation ( e. g., formal languages like lambda calculus ); these are said to be garbage collected languages.

* Forward looking infrared ( FLIR ) Many infra-red cameras require their detectors to be cryogenically cooled.

Many chaparral plant species require some fire cue ( heat, smoke, or charred wood, and chemical changes in the soil following fires ) for germination.

Many mental health professionals use the manual to determine and help communicate a patient's diagnosis after an evaluation ; hospitals, clinics, and insurance companies in the US also generally require a ' five axis ' DSM diagnosis of all the patients treated.

Many root vegetables are very resistant to spoilage and require no other preservation than storage in cool dark conditions, for example by burial in the ground, such as in a storage clamp.

Many graduate schools require applicants to take the exam and base admission decisions in part on the results.

Many of the inborn errors of metabolism require avoidance or shortening of fasting intervals, or extra carbohydrates.

Many of these industries consume large quantities of energy and require factories and machinery to convert the raw materials into goods and products.

Many factors can change insulin requirements and require an adjustment to the basal rate:

Many wheeled IFVs can extract themselves from a battlefield with specialised run-flat tires when not operating in difficult terrain, while an IFV with damaged tracks would require its tracks repaired in the field or an armoured recovery vehicle to tow it out.

Many computer systems require low interrupt latencies, especially embedded systems that need to control machinery in real-time.

Many self-identified lesbians neglect to see a physician because they do not participate in heterosexual activity and require no birth control, which is the initiating factor for most women to seek consultation with a gynecologist when they become sexually active.

Many chemical mutagens require biological activation to become mutagenic.

Many mimeographs can be hand-cranked, and thus require no electricity.

Many algorithms, including Support Vector Machines, linear regression, logistic regression, neural networks, and nearest neighbor methods, require that the input features be numerical and scaled to similar ranges ( e. g., to the interval ).

Many microcontrollers are so quirky that they effectively require their own non-standard dialects of C, such as SDCC for the 8051, which prevent using standard tools ( such as code libraries or static analysis tools ) even for code unrelated to hardware features.

Many diseases affecting the kidney are systemic disorders not limited to the organ itself, and may require special treatment.

Many positions, especially in research, require a doctoral degree.

Many of the laboratory techniques of biochemistry and molecular biology that involve DNA polymerase, such as DNA sequencing and the polymerase chain reaction ( PCR ), require DNA primers.

Many paints tend to separate when stored, the heavier components settling to the bottom, and require mixing before use.

Many of these specifically require that the products sold within those states be of the enriched form.