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on the other side, those who disagree with the inquiry-based philosophy maintain that students must first develop computational skills before they can understand concepts of mathematics. these people would argue that time is better spent practicing skills rather than in investigations inventing alternatives, or justify...	D
at the university of toronto, she has focussed on developing mechanisms to stop the spread of infectious diseases in hospitals and care homes. mcgeer has studied the impact of influenza on hospital staff. she encouraged people of all ages to receive the universal flu vaccine and supported hospitals in improving their i...	D
“i decided i needed to get a little bit more knowledge about practical matters and i wanted to become a machinist. while i was going to school i went to another school at night at brooklyn tech where i learned how to operate lathes, machines, read blueprints, and that kind of stuff. i got a job as a machinist after tha...	D
aft is also part of a multi-institutional research effort to explore the possibility of minimally invasive and nipple sparing breast surgery on patients with breast cancer. along with 8 other institutions, aft leads the washington university school of medicine effort to conduct a randomized controlled trial of mastecto...	maybe
many reactions require heat to increase reaction speed. however, in many situations increased heat can cause the solvent to boil uncontrollably which negatively affects the reaction, and can potentially reduce product yield. to address this issue, reflux condensers can be fitted to reaction glassware. reflux condensers...	B
in an acidic solution, the concentration of hydronium ions is greater than 10 moles per liter. since ph is defined as the negative logarithm of the concentration of hydronium ions, acidic solutions thus have a ph of less than 7. to prepare a solution for use as ph indicator, dissolve 0.10 g in 8.0 cm n/50 (a.k.a. 0.02...	C
in this paper elizabeth u.cascio along with economists patricia m. anderson, krisitn f. butcher, and diane whitmore schanzenbach research the relationship between body mass index and education. the paper was written in response to the claims that children gain weight while they are in school due to unhealthy snacks and...	no
a transit visa is required for gold coast airport, and for cairns airport and sydney airport if staying overnight. transit without a visa through adelaide applies only to passengers departing on the same aircraft unless advance notice is given by the airline. in addition, those who need to leave the transit lounge for ...	C
this amount can account for 20 to 30% of total electron transport. it is possible that the reduction of oxygen by free electrons emerging from psi prevents components of the electron transport chain from becoming over-reduced. the water water cycle is not related to photorespiration, as it comprises different reaction...	A
some kinds of raw beans contain a harmful, tasteless toxin: the lectin phytohaemagglutinin, which must be removed by cooking. red kidney beans are particularly toxic, but other types also pose risks of food poisoning. even small quantities (4 or 5 raw beans) may cause severe stomachache, vomiting, and diarrhea. this ri...	A
a typical manufactured glass contains around 15% sodium oxide, 70% silica (silicon dioxide), and 9% lime (calcium oxide). the sodium carbonate "soda" serves as a flux to lower the temperature at which the silica mixture melts. such soda-lime glass has a much lower melting temperature than pure silica and has slightly h...	H
until spring 2018, würsig taught undergraduate and graduate courses in aspects of marine mammalogy, specializing in behavior and behavioral ecology. he has published widely in the popular literature as part of teaching endeavors, such as for the journals natural history and scientific american, and he has been advisor ...	E
the same is true for the inverse relations. here is a picture of two students working with the "water triangle". given the problem noted above, most students predict the water level on the left side will drop to two units when the water triangle is tilted. when they carry out the experiment and see that the answer is 3...	D
multiple intubation tools are now available with built-in video technology, also known as video laryngoscopy. the glidescope model utilizes a curved laryngoscopic blade with an integrated camera connected to a large external monitor. the mcgrath model has a compact design with a small display directly attached to the l...	yes
this study is important for understanding gap regenerations and the problems of such a task. “this experiment demonstrated that natural levels of variation in propagule size and predisposal damage by insects translate into significant difference in seedling performance in terms of establishment and early growth. such d...	C
during residency, i recognized that i had dyslexia. and then i realized i had this gift for imaging. radiology is where i belonged. i live in a world of patterns and images and i see things that no one else sees. anomalies jump out at me like a neon sign. the 1921 journal of educational research contains fernald's fou...	yes
according to the nova institute, hürth, germany, in the future there is no alternative to the increased substantial use of agricultural raw materials. bio-based substances such as biodegradable and durable bio plastics, natural fiber reinforced (bio) plastics (bio composites) and wood-plastic composites (wpc) form an i...	A
the understanding that young children benefit from hands-on learning is more than a century old, going back to the work of maria montessori. however, there are modern developments of the theme. traditional manipulatives are now available on computers as virtual manipulatives, with many offering options not available in...	A
mirrors with curved surfaces can be modeled by ray tracing and using the law of reflection at each point on the surface. for mirrors with parabolic surfaces, parallel rays incident on the mirror produce reflected rays that converge at a common focus. other curved surfaces may also focus light, but with aberrations due ...	D
born and raised in brooklyn, new york city, john r. cobb attended the staunton military academy in virginia, and enlisted on a merchant ship at the age of 16. he studied english literature at brown university in providence, rhode island and earned a bachelor of arts in literature in 1925. in his senior year at brown he...	yes
sunspots themselves, in terms of the magnitude of their radiant-energy deficit, have a weak effect on solar flux. the total effect of sunspots and other magnetic processes in the solar photosphere is an increase of roughly 0.1% in brightness of the sun in comparison with its brightness at the solar-minimum level. this ...	H
in order to precisely determine the amount of clay, sand and silt in a soil, it must be taken to a laboratory for analysis. a strategy known as particle size analysis (psa) is performed, beginning with the pretreatment of the soil in order to remove all other particles such as organic matter that may interfere with the...	C
there are several places in the east where the water roars, everything from big rivers like the delaware river to creeks that dive over large waterfalls, many exceeding 30 feet (9.1 m). in fact, there used to be more of them but over time some of these have been dammed or altered; the upper portions of the mississippi ...	A
while a senior lecturer in biology at melbourne state college in the 1970s, kinnear wrote computer programmes to help teach genetics through simulations of animal breeding. to further her understanding of the underlying mathematics of her programmes, she applied for the graduate diploma of computer simulation at swinbu...	H
she earned her bachelor's degree in chemistry from the massachusetts institute of technology in 1969, and brought one of her budgies there with her. she subsequently earned a master's degree in chemistry in 1971 at harvard university, followed by a doctorate in chemical physics in 1976 at harvard. during her doctoral p...	F
between the 1910s and early 1920s, the focus of s. s. nametkin’s attention was on general theoretical problems of organic chemistry. from the second half of the 1920s, scientific and practical issues related to the chemistry of oil were put at the forefront. since 1927, he was the first in russia to teach a systematic ...	E
heliocentrism, or heliocentricism, is the astronomical model in which the earth and planets revolve around a relatively stationary sun at the center of the solar system. the word comes from the greek (ἥλιος helios "sun" and κέντρον kentron "center"). at the possible relationships between solar activity and meteorologi...	G
researchers found that the van hiele levels of american students are low. european researchers have found similar results for european students. many, perhaps most, american students do not achieve the deduction level even after successfully completing a proof-oriented high school geometry course, probably because mate...	C
in food, proteins are essential for growth and survival, and requirements vary depending upon a person's age and physiology (e.g., pregnancy). protein is commonly obtained from animal sources: eggs, milk, and meat. nuts, grains and legumes provide vegetable sources of protein, and protein combining of vegetable sources...	A
on the current format of scientific writing, davis had opined, "a scientific paper is an unusual art form. it has to be as compact as possible, while giving the reader all the information needed to repeat the experiments. because the literature is vast, the format of a paper is standardized so the reader can quickly fi...	D
typically found on twigs or buried wood, the fungus is known to be a vigorous decomposer of lignin and cellulose in leaf litter. mycena polygramma is a saprobic fungus and is one of many fungi that contribute to plant litter decomposition in forest ecosystems through nutrient recycling and humus formation in soil. it i...	C
in the bootcamp round, the first challenge is to have the contestants perform basic skills such as filleting a fish, peeling shrimp, etc. during that time, the judges will observe their techniques. the second challenge requires the contestants to create a dish using a prepared staple ingredient. the judges can advance ...	B
peleg is interested in the communication of honey bees, which can aid the conservation of pollinating insects. she uncovered how swarms of honey bees communicate through scenting to create scent "maps" so that the swarm can locate the queen bee. peleg demonstrated that honey bees collaborate in clusters to respond to m...	G
mathematics education has been a topic of debate among academics, parents, as well as educators. majorities agree that mathematics is crucial, but there has been many divergent opinions on what kind of mathematics should be taught and whether relevance to the "real world" or rigor should be emphasized. another source o...	D
interocular transfer is shown to be a catalyst in the process of rehabilitation in patients suffering from amblyopia (lazy eye). the use of virtual reality games strengthens the interocular transfer between the two eyes of an amblyopic patient, leading to an enhanced visual acuity, contrast sensitivity and stereopsis i...	no
one of the biggest food challenges astronauts face is menu fatigue. if the overall food intake declines, astronauts are at risk of nutritional deficiency, loss of bone and muscle mass, and lethargy. in 2013, the nasa human research program funded a project called " hi-seas," an acronym for “hawaii space exploration ana...	B
stays are offered on 1-day outdoor, 2-day and 3-day programs. this program includes nature classes: red (end of august to mid-october), white (in winter) and green (end of april until the end of the school calendar). the course lasts one year, divided into three eight-week terms. there are a wide variety of lectures o...	B
the pbl students score higher than the students in traditional courses because of their learning competencies, problem solving, self-assessment techniques, data gathering, behavioral science etc. it is because they are better at activating prior knowledge, and they learn in a context resembling their future context and...	yes
hands-on activities are extremely useful in the learning cycle. after making predictions about the height of mr. tall in paper clips, the measuring tools can be introduced and the students can test their strategies. for the student using a constant difference relation, actual measurement will show that mr. tall is actu...	H
in hydrology, a current in a stream or other water body is the flow of water influenced by gravity as the water moves downhill to reduce its potential energy. the current varies spatially as well as temporally within the stream, dependent upon the flow volume of water, stream gradient, and channel geometry. in tidal zo...	A
both models differentiate between physical and verbal-social aspects of well-determined activities (2 middle rows, 6 traits), and consider the traits related to the mental, intellectual aspects of activities (3 top traits of the fet model) as traits regulating behaviour in probabilistic, complex situations. such differ...	C
until recently, the only reliable ways to determine if the fetus has a chromosomal abnormality was to have an invasive test such as amniocentesis or chorionic villus sampling, but such tests carry a risk of causing a miscarriage estimated variously as ranging between 1% or 0.06%. based on maternal age, some countries o...	no
russula virescens has a limited capacity to bioaccumulate the micronutrients iron, copper, and zinc from the soil. the concentration of these trace metals is slightly higher in the caps than the stipes. a 300-gram (11 oz) meal of fresh mushroom caps would supply 16% of the recommended daily allowance (rda) of copper fo...	D
methyl cellulose can be employed as a mild glue which can be washed away with water. this may be used in the fixing of delicate pieces of art as well as in book conservation to loosen and clean off old glue from spines and bookboards. once it is removed from the animal, the skin is temporarily preserved, either by dry...	D
in another study using eye-movement patterns to investigate how experts view art, participants were shown realistic and abstract works of art under two conditions: one asking them to free scan the works, and the other asking them to memorize them. participants' eye movements were tracked as they either looked at the im...	B
for the last 30 years, horses have been described as being incapable of demonstrating social learning (baer et al. 1983.; baker and crawford 1986; clarke et al. 1996; lindberg et al. 1999) because the social complexity of horses was underestimated and the experimental designs were therefore not suitably constructed. in...	B
cooks received a bachelor of science and master of science degrees from the university of natal in south africa in 1961 and 1963, respectively. he received a ph.d. from the university of natal in 1965 and a second ph.d. from cambridge university in 1967, where he worked with peter sykes. he then did post-doctoral work ...	A
gates was inspired by the documentary the undersea world of jacques cousteau. she studied biology at newcastle university where she earned a bachelor of science degree in 1984. she fell in love with corals during a diving trip to the west indies. in 1985 she moved to the west indies to study corals. she completed her p...	D
simtest is a computerized adaptive test (cat) of foreign language ability designed and developed at the universitat autònoma de barcelona in catalonia, spain. it classifies examinees according to 6 levels of proficiency as defined in the council of europe document: “a common european framework of reference for language...	yes
newton-smith's undergraduate degree from queen's university was in mathematics and philosophy, in 1966. he took an ma from cornell university in philosophy, in 1968, and a dphil in philosophy from balliol college, oxford, in 1974. his working life before retirement was mainly as a fellow of balliol. part iii of the ma...	B
among the three major types of rock, fossils are most commonly found in sedimentary rock. unlike most igneous and metamorphic rocks, sedimentary rocks form at temperatures and pressures that do not destroy fossil remnants. often these fossils may only be visible under magnification. sedimentary rocks contain important...	A
rock mass rating presents some difficulties when applied to rock slopes, since the parameter that take into account the influence of the discontinuities orientation is introduced in detail for dam foundations and tunnels but not for slopes. to address this issue, romana defined slope mass rating scheme that is based on...	H
the mitochondria contains its own set of dna used to produce proteins found in the electron transport chain. the mitochondrial dna only codes for about thirteen proteins that are used in processing mitochondrial transcripts, ribosomal proteins, ribosomal rna, transfer rna, and protein subunits found in the protein comp...	H
the technique exploits the earth 's gravitational field and tidal forces to keep the spacecraft aligned along the desired orientation. the gravity of the earth decreases according to the inverse-square law, and by extending the long axis perpendicular to the orbit, the "lower" part of the orbiting structure will be mor...	C
tim pennings, a mathematics professor at hope college, has found that dogs are somehow able to calculate the optimal path to a ball thrown in the water. while playing fetch with his welsh corgi, he noticed that the dog ran along the beach for a certain distance before jumping into the water. because the dog is faster o...	A
a soda blaster is a self-contained system that includes a blast generator, high pressure compressed air, moisture decontamination system, blast hose, and a blast nozzle. the blasting material consists of formulated sodium bicarbonate (also known as baking soda). blasting soda is an extremely friable material that under...	B
the down jacket, known more commonly in the fashion industry as a puffer jacket or simply puffer, is a quilted coat which is insulated with either duck or goose feathers. air pockets created by the bulk of the feathers allow for the retention of warm air. the down jacket, known more commonly in the fashion industry as...	A
hands-on activities are extremely useful in the learning cycle. after making predictions about the height of mr. tall in paper clips, the measuring tools can be introduced and the students can test their strategies. for the student using a constant difference relation, actual measurement will show that mr. tall is actu...	F
consider the electron (mass m) and proton (mass m) in the hydrogen atom. they orbit each other about a common centre of mass, a two body problem. to analyze the motion of the electron, a one-body problem, the reduced mass replaces the electron mass the definitive mass measurement has been made by the babar experiment,...	B
the traditional method of applying the carbon to the surface of the iron involved packing the iron in a mixture of carbon-rich material such as ground bone and charcoal or a combination of leather, hooves, salt and urine, all inside a well-sealed box (the "case"). this carburizing package is then heated to a high tempe...	C
fish school search (fss), proposed by bastos filho and lima neto in 2008 is, in its basic version, an unimodal optimization algorithm inspired on the collective behavior of fish schools. the mechanisms of feeding and coordinated movement were used as inspiration to create the search operators. the core idea is to make ...	C
an example, from mason's a history of the sciences, illustrates multi-mode vibration via a piece of string. as a natural vibrator, the string will oscillate with specific modes (the standing waves of a string in harmonic resonance), dependent on the length of the string. in classical physics, a radiator of energy will ...	E
stubbe's parents were teachers, and that is why she thought teaching is what she originally wanted to do as a career. stubbe had a pet dog named dr. mcenzyme stubbe. the dog was a part of the research group and had its own email address and picture on the group's website. the school offers associate, bachelor and mast...	C
a major component of food is water, which can encompass anywhere from 50% in meat products to 95% in lettuce, cabbage, and tomato products. it is also an excellent place for bacterial growth and food spoilage if it is not properly processed. one way this is measured in food is by water activity which is very important ...	A
steven amstrup was born in fargo, north dakota, where he took an interest in bears at an early age. he attended the university of washington as an undergraduate, receiving his bachelor's degree in forestry in 1972. in 1975, he graduated from the university of idaho with a master's degree in wildlife management. he stud...	D
the elementary parts of a molecule are the nuclei, characterized by their atomic numbers, z, and the electrons, which have negative elementary charge, − e. their interaction gives a nuclear charge of z + q, where q = − en, with n equal to the number of electrons. electrons and nuclei are, to a very good approximation, ...	B
meiosis was discovered and described for the first time in sea urchin eggs in 1876, by oscar hertwig. it was described again in 1883, at the level of chromosomes, by van beneden in ascaris eggs. the significance of meiosis for reproduction and inheritance, however, was first described in 1890 by weismann, who noted tha...	A
a 2023 comparison between parents' views and standardized test scores revealed a significant gap; most parents overestimated their children's academic aptitude. in mathematics, only 26% were proficient, even though 90% of the parents asked thought their children met grade standards. having a higher naep math score in e...	no
in 2005 robert m. wiedenhaefer conducted a study on the factors contributing to terrorism. wiedenhaefer concluded that uncertainty avoidance has a high association with terrorism. he asserted through his analysis that uncertainty avoidance is the strongest predictor in such crimes. in recent years, sip has also been u...	C
apart from electromagnetics and network theory, other items in the syllabus are particular to electronic engineering courses. electrical engineering courses have other specialisms such as machines, power generation, and distribution. this list does not include the extensive engineering mathematics curriculum that is a ...	B
meteorology is the scientific study of weather. it is used in weather forecasting to predict atmospheric events prior to their occurrence. snow hydrology is used to estimate the characteristics of snowfall in different topographical regions. this includes information on snow depth, density, composition and possible run...	A
he developed "embodied learning" methods wherein concepts are intertwined with physically and emotionally engaging activities to create learning experiences that endure and transform. his course "managing with passion" is an events management course in which students learn by planning, organizing, training for and part...	C
she has explored different methods of teaching physics. for instance, the introductory course on atoms and waves was taught in both a standard format and in a " flipped " style. the flipped classes used videos, multiple choice questions, followed by additional clarification videos. even students in the standard class w...	B
in a variable-volume balloon, the volume of the lifting gas changes due to heating and cooling in the diurnal cycle. the cycle is magnified by a greenhouse effect inside the balloon, while the surrounding atmospheric gas is subject to a much more limited cyclical temperature change. as the lift gas heats and expands, t...	D
solar air heating is a solar thermal technology in which the energy from the sun, insolation, is captured by an absorbing medium and used to heat air. solar air heating is a renewable energy heating technology used to heat or condition air for buildings or process heat applications. it is typically the most cost-effect...	C
fat is present in most foods. it provides a unique texture, flavor, and aroma to the food it is found in. while fat is essential to life, it can be detrimental to health when consumed in excess of physiological requirements. high fat diets increase risk of heart disease, weight gain, and some cancers. high blood choles...	C
he graduated from the university of north carolina in 1943 and then earned a master's (1946) and doctoral degree at the university of california, berkeley, working as curatorial assistant of in the museum of vertebrate zoology from 1943 to 1949, and earning a phd under robert c. stebbins in 1950. his dissertation topic...	B
a recent book titled athena unbound provides a life-course analysis (based on interviews and surveys) of women in science from early childhood interest, through university, graduate school and the academic workplace. the thesis of this book is that "women face a special series of gender related barriers to entry and su...	yes
extraction in chemistry is a separation process consisting of the separation of a substance from a matrix. the distribution of a solute between two phases is an equilibrium condition described by partition theory. this is based on exactly how the analyte moves from the initial solvent into the extracting solvent. the t...	C
while attending florida international university burns's organic chemistry professor, arthur herriott, first excited her about organosilicon chemistry. burns graduated with a bachelor's degree from florida international university in miami in 1977. for graduate work, herriott directed burns to thomas j. barton, a speci...	C
the nctm in recent revisions has made more explicit this need for learning of basic math facts and correct, efficient methods. many new editions of standards-based texts do present standard methods and basic skills. however, the original guidelines continue to draw fire from well-meaning parents and community members, ...	yes
stem cells show an elevated therapeutic potential, mainly in hemato-oncologic pathologies, such as leukemia and lymphomas. little groups of stem cells were found into tumours, calling cancer stem cells. there are evidences that these cells promote tumor growth and metastasis. in accordance with the hierarchy model of ...	G
kevlar maintains its strength and resilience down to cryogenic temperatures (−196 °c (−320.8 °f)): in fact, it is slightly stronger at low temperatures. at higher temperatures the tensile strength is immediately reduced by about 10–20%, and after some hours the strength progressively reduces further. for example: endur...	B
each of the six parameters is assigned a value corresponding to the characteristics of the rock. these values are derived from field surveys and laboratory tests. the sum of the six parameters is the "rmr value", which lies between 0 and 100. there is an extreme constancy of the isotopic composition of igneous rocks. ...	D
education in systems engineering is often observed to be an extension to the regular engineering courses, reflecting the industry attitude that engineering professionals need a foundational background in one of the traditional engineering disciplines (e.g. civil engineering, electrical engineering, industrial engineeri...	C
when added to cooking meat, usually within raw or dried ginger, zingibain has been shown to increase the tenderness of meat. meat tenderization occurs due to zingibain's rapid proteolysis of major muscle proteins within meat, especially actomyosin and type i collagen, which is found in muscle joints. food chemistry is...	G
in 2020, dr. theodore published the largest series of patients who had undergone vertebral column shortening for tethered spinal cord syndrome. this article, which has the longest follow-up of other published series, established this procedure as a viable alternative to standard interventions. in 2023, the team receive...	no
many mass-marketed inhaler and nasal spray formulations contain benzalkonium chloride as a preservative, despite substantial evidence that it can adversely affect ciliary motion, mucociliary clearance, nasal mucosal histology, human neutrophil function, and leukocyte response to local inflammation. although some studie...	A
in 2003, there were media reports about a paper of zumla's in the lancet discussing a new test developed by a team he led for monitoring cd4 immune cell counts based on dried blood samples. such counts are used in monitoring aids patients taking antiretroviral drug treatments; zumla's subsequent work has led to develop...	yes
the engines are often used on hot pressure washers and generators, and a variety of larger construction equipment like trenchers, ride-on trowels, concrete saws and vibratory rollers. they’re also suitable for industrial and turf applications, including large riding lawnmowers. by processing trees and other vegetation...	C
most of aber's research career focused on the carbon, nitrogen and water dynamics of forested ecosystems as impacted by major sources of pollution, including acid rain and ozone, and the impact of a changing climate. he was a principal investigator at the nsf long-term ecological research sites at hubbard brook in new ...	D
the village is home to two important lakes, le lac and folly lake. le lac (memramcook) is situated in the south-east part of the village and is 500m long, where as folly lake is in the north-west and measures about 800m by 270m. there are also numerous marsh areas in memramcook, mostly on the river banks, in the north ...	B
what this means in practical terms, is that an architect or physician, for example, will firstly be a university graduate in their main subject, second, will have passed entrance examinations to join a recognised professional body and thirdly, will also be licensed to practise medicine or architecture, usually also obt...	D
early in his life, catmull found inspiration in disney movies, including peter pan and pinocchio, and wanted to be an animator; however, after finishing high school, he had no idea how to get there as there were no animation schools around that time. because he also liked math and physics, he chose a scientific career ...	B
for very high-mass stars, with mass at least 130 and up to perhaps roughly 250 solar masses, a true pair-instability supernova can occur. in these stars, the first time that conditions support pair production instability, the situation runs out of control. the collapse proceeds to efficiently compress the star's core; ...	B
vapor refers to a gas phase at a temperature where the same substance can also exist in the liquid or solid state, below the critical temperature of the substance. (for example, water has a critical temperature of 374 °c (647 k), which is the highest temperature at which liquid water can exist.) if the vapor is in cont...	A
a paste or gel might become a powder after it has been thoroughly dried, but is not considered a powder when it is wet because it does not flow freely. substances like dried clay, although dry bulk solids composed of very fine particles, are not powders unless they are crushed because they have too much cohesion betwee...	B
hands-on activities are extremely useful in the learning cycle. after making predictions about the height of mr. tall in paper clips, the measuring tools can be introduced and the students can test their strategies. for the student using a constant difference relation, actual measurement will show that mr. tall is actu...	D
hands-on activities are extremely useful in the learning cycle. after making predictions about the height of mr. tall in paper clips, the measuring tools can be introduced and the students can test their strategies. for the student using a constant difference relation, actual measurement will show that mr. tall is actu...	A
hands-on activities are extremely useful in the learning cycle. after making predictions about the height of mr. tall in paper clips, the measuring tools can be introduced and the students can test their strategies. for the student using a constant difference relation, actual measurement will show that mr. tall is actu...	H

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