Many collectors and historians are of the opinion that the M1945 helmet is either just a regular M1942 helmet that lacked the vents simply because of machine malfunctions in the factory, or unfinished M1942 that were completed in the post-war era.

Many land-based fighters also have tailhooks for use in case of a brake / tire malfunctions, aborted takeoffs, or other emergencies.

Many disorders involve the heart itself but some are outside of the heart.

Many such games involve one person pointing at each participant in a circle of players while reciting a rhyme.

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 mythologies involve a " world center ", which is often the sacred place of creation ; this center often takes the form of a tree, mountain, or other upright object, which serves as an axis mundi or axle of the world.

Many of these myths involve the loss of a paradise that existed at the beginning of the world.

Many pub or bar games involve competitive drinking for speed and not necessarily for the quantity consumed.

Many involve habitation or industrial elements.

Many problems of the design of experiments involve combinatorial designs, as in this example.

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 analytical procedures involve the use of a fluorometer, usually with a single exciting wavelength and single detection wavelength.

Many problems involve characterizing the members of various classes of graphs.

Many children like to play outdoor games that involve physical activity such as cops and robbers and hide and go seek.

Many hobbies involve performing by the hobbyist, such as singing, acting, juggling, magic, dancing and other performing arts.

Many challenges in NLP involve natural language understanding -- that is, enabling computers to derive meaning from human or natural language input.

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 calculations involve iterative methods that include self-consistent field methods.

* Many religions involve an initial Paradise preceding ordinary historical time.

* Many religions involve the story of a god who undergoes death and resurrection ( see life-death-rebirth deity ).

Many superhero fiction characters involve themselves ( either intentionally or accidentally ) with science fiction and fact, including advanced technologies, alien worlds, time travel, and interdimensional travel ; but the standards of scientific plausibility are lower than with actual science fiction.

Many well known uses of silver involve its precious metal properties, including currency, decorative items and mirrors.

Many winter activities involve the use of snow in some form ( which sometimes is man-made, using snow cannons ):

Many may have had an overly optimistic sense of what the war would involve, imagining that victory could be won as easily as in the First South African War.

Many origin stories involve tragic elements and / or freak accidents that result in the development of the hero's abilities.

Many assemblers offer additional mechanisms to facilitate program development, to control the assembly process, and to aid debugging.

Many physicists and philosophers have objected to the Copenhagen interpretation, both on the grounds that it is non-deterministic and that it includes an undefined measurement process that converts probability functions into non-probabilistic measurements.

Many members believe that the parents involved received poor guidance from church leaders, while others contend that the process of healing through Christian Science was not done correctly.

" Many developmental models are used to elucidate the physiology and molecular basis of this cellular process.

Many have attempted to discover or reverse-engineer the process by which it was made.

Many different factors influence the actual process of forgetting.

Many non-scientists instinctively and incorrectly see homeostasis as a process that requires conscious control.

Many actors, who work with scripts in stage, film or television, use improvisation in their rehearsal process.

Many others began to experiment with improving the process, which still had many shortcomings, not the least of which was the problem of transporting the liquid product.

Many Hindus see God's direct involvement in this process ; others consider the natural laws of causation sufficient to explain the effects of karma.

Many of these cases are still in the process of being settled or are headed for trial.

Many logically-based program transformation techniques have been developed to assist the programmer in this process, transforming programs that are correct but inefficient into programs that are both correct and efficient.

Many dancers describe this process as involving the initiation of momentum or ' energy ' ( by the lead ) and then the subsequent maintenance, exaggeration, decreasing or dissolving of this momentum by both partners.

Many more microprocessors are part of embedded systems, providing digital control of a myriad of objects from appliances to automobiles to cellular phones and industrial process control.

Many biblical scholars are prepared to admit that there may be a historical core beneath the Exodus and Sinai traditions, even if the biblical narrative dramatizes by portraying as a single event what was more likely a gradual process of migration and conquest.

Many pagan celebrations were abandoned or Christianized during the process of conversion in Europe.

Many Haredi or ultra-orthodox Jews are extremely scrupulous about the supervision of their matzah, as eating leavened products during Passover is liable to the extremely grave divine punishment of Kareth ( or a sin-offering if unintentional ); consequently many have the custom of baking their own matzo, or at least participating in some stage of the baking process.

Many animals, including humans, have two eyes with overlapping visual fields that use parallax to gain depth perception ; this process is known as stereopsis.

Many proteins are involved in the process of cell signaling and signal transduction.

Many other professional fields have some level of peer review process: accounting, law,

Many pencils feature an eraser on the top and so the process is usually still considered incomplete at this point.

Many were bankrupted in the process of building them ; others, such as Siena, spent so much money on fortifications that they were unable to maintain their armies properly, and so lost their wars anyway.

Many toxic materials are used in the fabrication process.

Many television stations are now in the process of converting from analogue ( NTSC, PAL or SECAM ) broadcast, to digital TV ( ATSC broadcast, DVB or ISDB ).

" Many old agricultural attitudes remain widespread, but these traditions are expected to change with the EU accession process.