The science, art, or technology dealing with processes involved in the separation of metals from their ores, the technique of making or compounding the alloys, the techniques of working or heat-treating metals, and the mining of metals. It includes industrial metallurgy as well as metallurgical techniques employed in the preparation and working of metals used in dentistry, with special reference to orthodontic and prosthodontic appliances. (From Jablonski, Dictionary of Dentistry, 1992, p494)

Genotoxic exposures of potroom workers. (1/621)

OBJECTIVES: Potroom workers in aluminum reduction plants have increased risks for bladder and lung cancer due to exposure from polycyclic aromatic hydrocarbons (PAH). In this study correlations between measures of the external, internal, and biological effective dose have been studied for PAH. METHODS: Venous blood samples were obtained from 98 male potroom workers and 55 unexposed male blue-collar workers, for the analysis of aromatic adducts to DNA (deoxyribonucleic acid) in lymphocytes, using the 32P-postlabeling technique. 1-Hydroxypyrene in urine was analyzed with high-pressure liquid chromatography. Personal sampling of both particulate and gas phase PAH was performed during a full workday for the potroom workers and for 5 referents. Individual PAH congeners were determined with liquid chromatographic-mass spectrometric and gas chromatographic-mass spectrometric techniques. RESULTS: The respiratory-zone airborne level of the sum of 22 particulate (median 13.2 micro/m3) and the 7 gas phase PAH-congeners (median 16.3 microg/m3) among the potroom workers was a hundred times higher than among the referents. The urinary concentration of 1-hydroxypyrene before work was 30 times higher for the potroom workers (median 3.43 micromol/mol creatinine) than for the referents. Most airborne PAH congeners correlated with the excretion of 1-hydroxypyrene in urine. The frequency of aromatic DNA adducts did not, however, differ between the potroom workers and the referents, and no correlation was found for 1-hydroxypyrene in urine. CONCLUSIONS: Despite an obvious occupational exposure to PAH, no increase in aromatic DNA adducts in lymphocytes was found among the potroom workers.  (+info)

Effects of experimental exposure to triethylamine on vision and the eye. (2/621)

OBJECTIVES: To determine the effect of triethylamine (TEA) on the cornea and to evaluate the cause of blurred vision. To find the lowest observed effect concentration of exposure to TEA. METHODS: Four people were exposed to TEA for 4 hours at concentrations of 40.6, 6.5, and 3.0 mg/m3. Before and after every exposure, symptoms and ocular microscopy findings were recorded. Binocular visual acuity and contrast sensitivity at 2.5% contrast were also measured. Also, before and after the 40.6 mg/m3 exposure, corneal thickness was measured and ocular dimensions were recorded by ultrasonography, endothelial cells of the cornea were analysed, and serum and lacrimal specimens were collected for the analysis of TEA. RESULTS: After exposure to 40.6 mg/m3 TEA there was a marked oedema in the corneal epithelium and subepithelial microcysts. However, corneal thickness increased only minimally because of the epithelial oedema. The lacrimal concentrations of TEA were, on average (range) 41 (18-83) times higher than the serum TEA concentrations. The vision was blurred in all subjects and visual acuity and contrast sensitivity had decreased in three of the four subjects. After exposure to TEA at 6.5 mg/m3 two subjects experienced symptoms, and contrast sensitivity had decreased in three of the four subjects. There were no symptoms or decreases in contrast sensitivity after exposure to a TEA concentration of 3.0 mg/m3. CONCLUSIONS: TEA caused a marked oedema and microcysts in corneal epithelium but only minor increases in corneal thickness. The effects may be mediated by the lacrimal fluid owing to its high TEA concentration. Four hour exposure to a TEA concentration of 3.0 mg/m3 seemed to cause no effects, whereas exposure to 6.5 mg/m3 for the same period caused blurred vision and a decrease in contrast sensitivity.  (+info)

Dose dependent reduction of erythroid progenitor cells and inappropriate erythropoietin response in exposure to lead: new aspects of anaemia induced by lead. (3/621)

OBJECTIVE: To determine whether haematopoietic progenitor cells and erythropoietin (EPO), which is an essential humoral stimulus for erythroid progenitor (BFU-E) cell differentiation, are affected by lead intoxication. METHODS: In male subjects chronically exposed to lead with and without anaemia, pluripotent (CFU-GEMM), BFU-E and granulocyte/macrophage (CFU-GM) progenitor cell counts in peripheral blood were measured with a modified clonal assay. Lead concentrations in blood (PbB) and urine (PbU) were measured by the atomic absorption technique, and EPO was measured with a modified radioimmunoassay. RESULTS: PbB in the subjects exposed to lead ranged from 0.796 to 4.4 mumol/l, and PbU varied between 0.033 and 0.522 mumol/l. In subjects exposed to lead with PbB > or = 2.896 mumol/l (n = 7), BFU-E cells were significantly reduced (p < 0.001) whereas the reduction in CFU-GM cells was only of borderline significance (p = 0.037) compared with the age matched controls (n = 20). The CFU-GEMM cells remained unchanged. Furthermore, BFU-E and CFU-GM cells were reduced in a dose dependent fashion, with increasing PbB or PbU, respectively. In the subjects exposed to lead EPO was in the normal range and did not increase in the presence of anaemia induced by lead. No correlations existed between EPO and PbB, PbU, or progenitor cells. CONCLUSION: The data suggest new aspects of lead induced anaemia besides the currently acknowledged shortened life span of erythrocytes and inhibition of haemoglobin synthesis. Two additional mechanisms should be considered: the reduction of BFU-E cells, and inappropriate renal EPO production in the presence of severe exposure to lead, which would lead to an inadequate maturation of BFU-E cells.  (+info)

Historical cohort study of a New Zealand foundry and heavy engineering plant. (4/621)

OBJECTIVES: To investigate the mortality of workers who had been exposed to asbestos, machining fluids and foundry work in a foundry and heavy engineering plant in the railway rolling stock manufacturing industry in New Zealand. METHODS: Historical cohort study design. RESULTS: For the total workforce of 3522 men employed between 1945 and 1991, follow up was 90% of person-years to 31 December 1991. Significantly increased standardised mortality ratios (SMRs) were found for all causes of death combined (SMR 1.07; 95% confidence interval (95% CI) 1.01 to 1.14), all malignancies (SMR 1.15; 95% CI 1.01 to 1.31), circulatory (SMR 1.16; 95% CI 1.07 to 1.27) and musculoskeletal diseases (SMR 3.06; 95% CI 1.39 to 5.84), all digestive cancers (SMR 1.29; 95% CI 1.04 to 1.59), all respiratory cancers (SMR 1.34; 95% CI 1.08 to 1.65), cancer of the oesophagus (SMR 1.97; 95% CI 1.01 to 3.45), and mesothelioma of the pleura (SMR 6.58; 95% CI 1.24 to 19.49). Three deaths from pleural mesothelioma were recorded, with latency times of 51, 53, and 57 years. There were no dose-response relations between exposure to asbestos, machining fluids or foundry work, or by duration of employment in the plant, and any cause of death. CONCLUSIONS: This study found small increases in risk for several causes of death among foundry and heavy engineering workers; however, these increases were small and the possible effects of smoking and other lifestyle factors could not be excluded. There was evidence of asbestos related disease in those involved in engineering work in the past.  (+info)

Modulating influence of cytochrome P-450 MspI polymorphism on serum liver function profiles in coke oven workers. (5/621)

OBJECTIVES: It was reported previously that topside oven workers with heavy exposure to coke oven emissions had increased serum activities of hepatic aminotransferase in one coke oven plant. This study was conducted to investigate the modifying effect of CYP1A1 MspI polymorphism on liver function profiles in coke oven workers. METHODS: 88 coke oven workers from a large steel company in Taiwan were studied in 1995-6. Exposure was categorised by work area: topside oven workers and sideoven workers. Liver function profiles including serum aspartate aminotransferase (AST), alanine aminotransferase (ALT), r-glutamyl transpeptidase (GGT), alkaline phosphatase (ALP), and total bilirubin (BIL) were examined in the morning after personal exposure measurements. The MspI polymorphism was determined by polymerase chain reaction (PCR) and restriction fragment length polymorphism (RFLP). RESULTS: Five of 23 (22%) topside oven workers and seven of 65 (11%) sideoven workers had the CYP1A1 MspI homozygous variant genotype. With sideoven workers with the combined wild type and heterozygous variant as the reference group in multiple regression models, it was found that topside oven workers with the combined traits had mean AST and ALT activities that were 21% and 46% higher (95% confidence interval (95% CI) 4% to 42% and 12% to 91%, respectively) than the reference group after adjusting for appropriate confounders. Also, topside oven workers with the homozygous variant trait had mean AST, ALT, and GGT activities that were 59%, 68%, and 157% higher (95% CI 21% to 109%, 6% to 168%, and 39% to 374%, respectively) than the reference group. The prevalence of an abnormal hepatocellular pattern (AST > 37 IU/l or ALT > 39 IU/l) was more common in the topside oven workers with the homozygous variant than in the sideoven workers with the other combined genotypes (adjusted odds ratio 9.9, 95% CI 1.2 to 82.3) after adjusting for appropriate confounders. CONCLUSIONS: The CYP1A1 MspI polymorphism may modify the biotransformation of coke oven emissions, which results in hepatocellular damage in coke oven workers.  (+info)

20 years of medical surveillance on exposure to allergenic and non-allergenic platinum compounds: the importance of chemical speciation. (6/621)

OBJECTIVES: Chloroplatinates are potent allergens but other soluble platinum compounds such as tetraammine platinum dichloride (TPC) do not provoke reactions in subjects who are sensitive to chloroplatinates. TPC has been used in the manufacture of autocatalysts for 20 years. This study analyses 20 year data on exposure to soluble platinum compounds and medical surveillance to confirm that TPC is not allergenic. METHODS: Workers in three distinct operations were exposed to soluble platinum compounds as chloroplatinates, chloroplatinates with TPC, or to TPC alone. Results of personal air sampling for soluble platinum compounds were compared together with the results of medical surveillance. RESULTS: The levels of exposure to soluble platinum compounds in each operation were comparable but the incidence of allergy was significantly different. In a subgroup of workers consistently exposed to chemical processes in each operation, the cumulative chance of being sensitised after 5 years of exposure was estimated as 51% for chloroplatinate exposure, 33% for mixed exposure, and 0% for TPC alone. The differences in sensitisation rates could not be explained by age, sex, and atopy. Nor could they be explained by the increased frequency of smoking in the workers with chloroplatinate exposure, despite the markedly higher risk of sensitisation in smokers. The differences could only be explained by the chemical stability of TPC. CONCLUSIONS: This study shows that the soluble platinum compound TPC is not allergenic under normal industrial conditions. Characterisation of the chemical compound (speciation) is essential to prevent stringent exposure limits being imposed for all soluble compounds on a generic basis.  (+info)

Point source sulphur dioxide peaks and hospital presentations for asthma. (7/621)

OBJECTIVE: To examine the effect on hospital presentations for asthma of brief exposures to sulphur dioxide (SO2) (within the range 0-8700 micrograms/m3) emanating from two point sources in a remote rural city of 25,000 people. METHODS: A time series analysis of SO2 concentrations and hospital presentations for asthma was undertaken at Mount Isa where SO2 is released into the atmosphere by a copper smelter and a lead smelter. The study examined 5 minute block mean SO2 concentrations and daily hospital presentations for asthma, wheeze, or shortness of breath. Generalised linear models and generalised additive models based on a Poisson distribution were applied. RESULTS: There was no evidence of any positive relation between peak SO2 concentrations and hospital presentations or admissions for asthma, wheeze, or shortness of breath. CONCLUSION: Brief exposures to high concentrations of SO2 emanating from point sources at Mount Isa do not cause sufficiently serious symptoms in asthmatic people to require presentation to hospital.  (+info)

Extremely low frequency magnetic fields and fertility: a follow up study of couples planning first pregnancies. The Danish First Pregnancy Planner Study Team. (8/621)

OBJECTIVES: To evaluate the impact of extremely low frequency (ELF) magnetic fields on markers of human fertility. METHODS: A follow up study of time to pregnancy, semen quality, and reproductive hormones was conducted among couples planning first pregnancies (36 males were welders and 21 were non-welders). The male and the female partner were monitored for exposure to ELF magnetic field by personal exposure meters. As summary measures of exposure the median value was calculated together with the 75 percentile value and the proportion of measurements exceeding 0.2 and 1.0 microT, respectively. Each summary measure was divided in three categories: low, medium, and high. RESULTS: Couples in which the man had a medium or a high proportion of measurements > 1.0 microT had a reduced probability of conception per menstrual cycle compared with the men with low exposure, but the result was only significant for the men with medium exposure. This finding was partly attributable to a high probability of conception per menstrual cycle among the men with low exposure compared with non-welders in the original cohort of 430 couples. Other summary measures were not related to probability of conception or other markers of fertility. A possible negative association was found between high probability of conception and female exposure measures based on the median, the 75 percentile, and the proportion of measurements > 0.2 microT, but no association was found with the proportion of measurements > 1.0 microT. CONCLUSIONS: The findings provide no consistent support for a hypothesis of a deleterious effect of low level ELF magnetic fields on markers of human fertility. However, due to the relatively small size of the studied population only large associations would be detected.  (+info)

I'm sorry for any confusion, but "metallurgy" is not a term that has a medical definition. Metallurgy is a branch of materials science that deals with the properties, physical and chemical behavior, and production of metals. It involves studying the techniques and processes used to isolate, alloy, and fabricate various types of metal products. If you have any questions related to medicine or health, I'd be happy to try to help answer those for you!

... also known as black metallurgy) and non-ferrous metallurgy (also known as colored metallurgy). Ferrous metallurgy involves ... The science of metallurgy is further subdivided into two broad categories: chemical metallurgy and physical metallurgy. ... metal extraction and metallurgy of the time. Agricola has been described as the "father of metallurgy". Extractive metallurgy ... Metallurgy is distinct from the craft of metalworking. Metalworking relies on metallurgy in a similar manner to how medicine ...
Binnemans, Koen (2017). "Solvometallurgy: An Emerging Branch of Extractive Metallurgy". Journal of Sustainable Metallurgy. 3 (3 ... Bio-hydro-metallurgy make use of living organisms, such as bacteria and fungi, and although this method demands only the input ... Extractive metallurgy is a branch of metallurgical engineering wherein process and methods of extraction of metals from their ... Brent Hiskey "Metallurgy, Survey" in Kirk-Othmer Encyclopedia of Chemical Technology, 2000, Wiley-VCH, Weinheim. doi:10.1002/ ...
Metallurgy in Archaeology: A Prehistory of Metallurgy in the British Isles. London: Edward Arnold (Publishers) Ltd. Zwicker, U ... The Beginnings of Metallurgy: Proceedings of the International Conference "The Beginnings of Metallurgy", Bochum 1995. Hamburg ... The Metallurgy of Roman Silver Coinage: From the Reform of Nero to the Reform of Trajan. Cambridge: Cambridge University Press ... Healy, John F. Mining and metallurgy in the Greek and Roman world. London: Thames and Hudson, 1978. Hobbs, Richard. Late Roman ...
In metallurgy, a flux (from Latin fluxus 'flow') is a chemical cleaning agent, flowing agent, or purifying agent. Fluxes may ... "Metallurgy in southern South America, Smelting, p. 1659-60" (PDF). Archived from the original (PDF) on October 10, 2010. ... They are used in both extractive metallurgy and metal joining. Some of the earliest known fluxes were sodium carbonate, potash ... is the origin of the word flux in metallurgy. The flux most commonly used in iron and steel furnaces is limestone, which is ...
Ghosh, Ahindra; Ray, Hem Shanker (1991). Principles of Extractive Metallurgy. ISBN 9788122403220. (CS1 maint: archived copy as ...
Uranium in its natural state comprises just 0.71% 235U and 99.3% 238U, and the main focus of uranium metallurgy is the ... The technology of mining and metallurgy Building nuclear warheads: The process List of Uranium Alloys (CS1: long volume value, ... In materials science and materials engineering, uranium metallurgy is the study of the physical and chemical behavior of ... Uranium Enriched uranium Nuclear weapon design The technology of mining and metallurgy [1], retrieved 7 October 2005. ...
... is one of the two main branches of the scientific approach to metallurgy, which considers in a systematic ... Extractive metallurgy Metallurgical (and Materials) Transactions, a peer-review journal covering Physical Metallurgy and ... While chemical metallurgy involves the domain of reduction/oxidation of metals, physical metallurgy deals mainly with ... MIT Ocw (MIT OpenCourseWare) Course on Physical Metallurgy The classic, extensive book single authored book on the subject A ...
... (PM) is a term covering a wide range of ways in which materials or components are made from metal powders. PM ... Powder metallurgy is also used to make unique materials impossible to get from melting or forming in other ways. A very ... The powder metallurgy "press and sinter" process generally consists of three basic steps: powder blending (or pulverisation), ... 50,000 tonnes per year is made with powder metallurgy. Other products include sintered filters, porous oil-impregnated bearings ...
Metal whiskering is a phenomenon that occurs in electrical devices when metals form long whisker-like projections over time. Tin whiskers were noticed and documented in the vacuum tube era of electronics early in the 20th century in equipment that used pure, or almost pure, tin solder in their production. It was noticed that small metal hairs or tendrils grew between metal solder pads, causing short circuits. Metal whiskers form in the presence of compressive stress. Germanium, zinc, cadmium, and even lead whiskers have been documented. Many techniques are used to mitigate the problem, including changes to the annealing process (heating and cooling), the addition of elements like copper and nickel, and the inclusion of conformal coatings. Traditionally, lead has been added to slow down whisker growth in tin-based solders. Following the Restriction of Hazardous Substances Directive (RoHS), the European Union banned the use of lead in most consumer electronic products from 2006 due to health ...
Strength, in metallurgy, is still a rather vague term, so is usually divided into yield strength (strength beyond which ... 98-99 Steel metallurgy for the non-metallurgist By John D. Verhoeven - ASM International 2007 Page 99-105 The Medieval Sword in ... Without knowledge of metallurgy, tempering was originally devised through a trial-and-error method. Because few methods of ... I shall employ the word tempering in the same sense as softening." In metallurgy, one may encounter many terms that have very ...
"Official website". Metallurgy Analysis. Retrieved 24 September 2021. "Metallurgical Analysis (冶金分析)". CAOD. Retrieved 24 ...
William Jenkin developed many of the techniques and procedures used in carbonyl metallurgy. Carbonyl metallurgy is useful as a ... Carbonyl metallurgy is used to manufacture products of iron, nickel, steel, and other metals. Coatings are produced by vapor ... Beneficiation of asteroidal iron by carbonyl metallurgy - http://www.space-mining.com/beneficiation.html (archived: https://web ...
Goss) grains grow selectively, about one in 106 primary grains, at the expense of many other primary recrystallized grains. This results in abnormal grain growth, which may be beneficial or detrimental for product material properties. The mechanism of secondary recrystallization is a small and uniform primary grain size, achieved through the inhibition of normal grain growth by fine precipitates called inhibitors. Goss grains are named in honor of Norman P. Goss, the inventor of grain-oriented electrical steel circa 1934. There are several, largely empirical laws of recrystallization: Thermally activated. The rate of the microscopic mechanisms controlling the nucleation and growth of recrystallized grains depend on the annealing temperature. Arrhenius-type equations indicate an exponential relationship. Critical temperature. Following from the previous rule it is found that recrystallization requires a minimum temperature for the necessary atomic mechanisms to occur. This recrystallization ...
In metallurgy, recovery is a process by which a metal or alloy's deformed grains can reduce their stored energy by the removal ...
In metallurgy a veining (or finning) is the occurrence of a sheet like casting defect, produced by molten metal penetration ...
A salamander (or deadman's foot or furnace bear) in the metallurgy dialect means all liquid and solidified materials in the ...
... prevail in the metallurgy of non ferrous metals. Such a converter is a horizontal barrel lined with refractory material inside ...
Metallurgy Physical metallurgy Extractive metallurgy v t e (Metallurgy, All stub articles, Chemistry stubs). ... Chemical metallurgy is the science of obtaining metals from their concentrates, semi products, recycled bodies and solutions, ... Subjects of study in chemical metallurgy include the extraction of metals, thermodynamics, electrochemistry, and chemical ... degradation (corrosion). Moore, John Jeremy; Boyce, E. A. (1990). Chemical Metallurgy. doi:10.1016/c2013-0-00969-3. ISBN ...
... is the field of materials technology that deals with making, shaping, or treating metals in a controlled ... Examples of vacuum metallurgy include vacuum degassing of molten steel in steelmaking operations, vacuum deposition of thin ... The purpose of vacuum metallurgy is to prevent contamination of metal by gases in the atmosphere. Alternatively, in some ... Electron-beam welding http://processmaterials.com/technology/vacuum-metallurgy "Vacuum metallurgy", retrieved March 26, 2017 v ...
A good example of the autoclave leach process can also be found in the metallurgy of zinc. It is best described by the ... Leaching is a process widely used in extractive metallurgy where ore is treated with chemicals to convert the valuable metals ...
Hardening is a metallurgical metalworking process used to increase the hardness of a metal. The hardness of a metal is directly proportional to the uniaxial yield stress at the location of the imposed strain. A harder metal will have a higher resistance to plastic deformation than a less hard metal. The five hardening processes are: The Hall-Petch method, or grain boundary strengthening, is to obtain small grains. Smaller grains increases the likelihood of dislocations running into grain boundaries after shorter distances, which are very strong dislocation barriers. In general, smaller grain size will make the material harder. When the grain size approach sub-micron sizes, some materials may however become softer. This is simply an effect of another deformation mechanism that becomes easier, i.e. grain boundary sliding. At this point, all dislocation related hardening mechanisms become irrelevant. In work hardening (also referred to as strain hardening) the material is strained past its yield ...
Matte is a term used in the field of pyrometallurgy given to the molten metal sulfide phases typically formed during smelting of copper, nickel, and other base metals. Typically, a matte is the phase in which the principal metal being extracted is recovered prior to a final reduction process (usually converting) to produce blister copper. The matte may also collect some valuable minor constituents such as noble metals, minor base metals, selenium or tellurium. Mattes may also be used to collect impurities from a metal phase, such as in the case of antimony smelting. Molten mattes are insoluble in both slag and metal phases. This insolubility, combined with differences in specific gravities between mattes, slags, and metals, allows for separation of the molten phases. AP-42, 5th edition. U.S. Environmental Protection Agency. 1995. p. 12.3-1. Moosavi-Khoonsari, E.; Mostaghel, S.; Siegmund, A.; Cloutier, J.-P (2022). "A Review on Pyrometallurgical Extraction of Antimony from Primary Resources: ...
Transactions of the Institution of Mining and Metallurgy (Section C: Mineral Processing and Extractive Metallurgy), 91, June ... Extractive Metallurgy of Copper, Fourth Edition, Eds W G Davenport, M King, M Schlesinger and A K Biswas (Elsevier Science ...
Cementation is a type of precipitation, a heterogeneous process in which ions are reduced to zero valence at a solid metallic interface. The process is often used to refine leach solutions. Cementation of copper is a common example. Copper ions in solution, often from an ore leaching process, are precipitated out of solution in the presence of solid iron. The iron oxidizes, and the copper ions are reduced through the transfer of electrons. The reaction is spontaneous because copper is higher on the galvanic series than iron. Cu2+(aq) + Fe(s) → Cu(s) + Fe2+(aq) This was a historically useful process for the production of copper, where the precipitated solid copper metal was recovered as flakes or powder on the surface of scrap iron. Cementation is used industrially to recover a variety of heavy metals including cadmium, and the cementation of gold by zinc in the Merrill-Crowe process accounts for a substantial fraction of world gold production. Engineering portal Bessemer process Methods of ...
Tylecote, R. F. (1992). A History of Metallurgy, Second Edition. London: Maney Publishing, for the Institute of Materials. ISBN ... Wikisource has original text related to this article: Puddling (metallurgy) Wikimedia Commons has media related to Puddling ...
Metallurgy - An Elementary Text Book, E.L.Rhead F.I.C F.C.S, Longmans, 1895, pp193-195 Metallurgy - An elementary text-book, E. ... In metallurgy, refining consists of purifying an impure metal. It is to be distinguished from other processes such as smelting ... Tylecote, R. F. (1992). A history of metallurgy. London: Institute of Materials. pp. 157-158. Rowe, 1983. pp 189-190. ... R. F. Tylecote, A history of metallurgy (Institute of materials, London 1992). Newcastle University: Hugh Lee Pattinson ...
... (also called nanotechnology enabled metallurgy, or nanometallurgy) is an emerging interdisciplinary domain ... Nanotech metallurgy covers research areas such as nanophase effects on processing/manufacturing, materials properties (e.g. ... Nanotech metallurgy covers the synthesis, production and incorporation of nanophases (e.g. nanoparticles, nanowires, nanosheets ... Nanotechnology Metallurgy Metal matrix nanocomposites Nanoparticles Metal Alloys Manufacturing Scale up production Nanoparticle ...
... also influenced the metallurgy of the Koban people of the North Caucasus. Legrand, S. (2006). The emergence ... Metallurgy held a major place in Scythian society as metalworkers were needed to produce material goods to support the Scythian ... Early Scythian metallurgy was centered around bronzeworking, as these skills had already been widely adopted by the Scythians' ... "Ancient Metallurgy In The Caucasus As Reflected In Ossetian Epic Poetry." International Social Science Review 74, no. 1/2 (1999 ...
... is the metallurgy of iron and its alloys. The earliest surviving prehistoric iron artifacts, from the 4th ... King, P. W. (2002). "Dud Dudley's contribution to metallurgy". Historical Metallurgy. 36 (1): 43-53. King, P. W. (2001). "Sir ... Iron metallurgy began to be practised in Scandinavia during the later Bronze Age from at least the 9th century BC. In the 11th ... Although Du Shi was the first to apply water power to bellows in metallurgy, the first drawn and printed illustration of its ...
In metallurgy, a ladle is a bucket-shaped container or vessel used to transport and pour out molten metals. Ladles are often ...
... also known as black metallurgy) and non-ferrous metallurgy (also known as colored metallurgy). Ferrous metallurgy involves ... The science of metallurgy is further subdivided into two broad categories: chemical metallurgy and physical metallurgy. ... metal extraction and metallurgy of the time. Agricola has been described as the "father of metallurgy". Extractive metallurgy ... Metallurgy is distinct from the craft of metalworking. Metalworking relies on metallurgy in a similar manner to how medicine ...
metallurgy. Learn about this topic in these articles:. use by Neilson. * In James Beaumont Neilson. …introduced the use of a ...
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Consequently, before extractive metallurgy can effect the separation of metallic elements from the other constituents of a ... metallic minerals are subjected to extractive metallurgy, in which their metallic elements are extracted from chemical compound ... Metallurgy - Extractive, Refining, Alloying: Following separation and concentration by mineral processing, ... Consequently, before extractive metallurgy can effect the separation of metallic elements from the other constituents of a ...
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Powder Metallurgy is a proven technology to produce high-strength gears for the automotive industry. Advances in powder ... Powder Metallurgy of High Density Helical Gears 2003-01-0336. Powder Metallurgy is a proven technology to produce high strength ... Citation: Slattery, R., Hanejko, F., Marucci, M., and Müller, J., "Powder Metallurgy of High Density Helical Gears," SAE ...
It is one of the earliest examples of copper metallurgy ever found in Yukon. ...
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To advance the knowledge of ferrous metallurgy and support the global ferrous metallurgy community by providing forums for the ... Metallurgy - Processing, Products & Applications Technology Committee. MISSION: To advance the knowledge of ferrous metallurgy ... View Members who have joined the Metallurgy - Processing, Products & Applications Technology Committee in the last 30 days. ... Stay involved by viewing past Metallurgy - Processing, Products & Applications Technology Committee meetings and activities. ...
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Recent Advances in Extractive Metallurgy (Deadline: 29 February 2024). *Transfer Systems for Ores and Minerals (Deadline: 29 ... Chemical Engineering and Technology in Mineral Processing and Extractive Metallurgy, Volume II (Deadline: 31 December 2023) ... Advances in Mineral Processing and Extractive Metallurgy of Base and Precious Metals (Deadline: 30 May 2024) ... Click here to see the Section Topical Advisory Panel of "Mineral Processing and Extractive Metallurgy". ...
Metallurgy eBooks to read online or download in EPUB or PDF format on your mobile device and PC. ...
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Revision of B243-03a Standard Terminology of Powder Metallurgy. Rationale. Consider 23 terms defined in ISO 3252 for inclusion ...
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Secondary Metallurgy. Fundamentals, Processes, Applications. by Gerd Stolte. This book is made for engineers who built plants and metallurgists who operate them as well as for researchers.. The presentation is mainly based on treatment practices and results obtained during the last decade.. Details of the content Description and results of secondary metallurgical processes, cleanness of steel and slag management, influence of ladle refractory on the melt, continuous casting and cleanliness, environmental considerations and ecological balances, automation systems.. ...
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This website information on the research opportunities and teaching programmes that are available to you in Metallurgy and ... In Metallurgy and Materials we explore how materials behave and how they can be used and improved. Working closely with ...
  • The science of metallurgy is further subdivided into two broad categories: chemical metallurgy and physical metallurgy. (wikipedia.org)
  • In contrast, physical metallurgy focuses on the mechanical properties of metals, the physical properties of metals, and the physical performance of metals. (wikipedia.org)
  • Powder Metallurgy is a proven technology to produce high strength gears for the automotive industry. (sae.org)
  • The Metal Powder Industries Federation is a federation of six trade associations representing various aspects of powder metallurgy (PM), metal powders, and particulate materials. (mpif.org)
  • We combine our innovative leadership with longstanding expertise and capabilities to develop and optimize graphite-based solutions for powder metallurgy that ensure consistent reliable and high-performance metal powders. (imerys.com)
  • Graphite is commonly used in powder metallurgy as an alloying element that increases the strength of sintered parts. (imerys.com)
  • Graphite powders play an important role in many modern component manufacturing techniques and applications from powder metallurgy and hard metal manufacturing to carbon brushes and foils. (imerys.com)
  • Powder metallurgy ( PM ) is the technology of producing and utilising metal and alloy powders for the fabrication of shaped parts, varying in size from grams to tonnes and in shapes from simple to highly complex ( near-net shape ). (bodycote.com)
  • The first evidence of this extractive metallurgy, dating from the 5th and 6th millennia BC, has been found at archaeological sites in Majdanpek, Jarmovac and Pločnik, in present-day Serbia. (wikipedia.org)
  • Following separation and concentration by mineral processing , metallic minerals are subjected to extractive metallurgy, in which their metallic elements are extracted from chemical compound form and refined of impurities. (britannica.com)
  • Consequently, before extractive metallurgy can effect the separation of metallic elements from the other constituents of a compound , it must often convert the compound into a type that can be more readily treated. (britannica.com)
  • The section aims at publishing high quality original research papers and critical reviews featuring the fundamental aspects and industrial applications in the field of processing and extractive metallurgy of primary and secondary resources. (mdpi.com)
  • 2023 China ( Guangzhou ) Int ' l Metal and Metallurgy Exhibition hosted by Guangzhou Julang Exhibition Design Co., Ltd. was successfully held from May 18 to 20, 2023 at Pazhou Exhibition Hall of Canton Fair, the largest in Asia. (rudmet.ru)
  • Emphasis is placed on basic metallurgy, effects of welding on various metals, and metal classification and identification. (montgomery.edu)
  • Upon completion, students should be able to understand basic metallurgy, materials designation, and classification systems used in welding. (montgomery.edu)
  • In light of the preceding discussion, James D. Muhly interprets the remains of the Chrysokamino workshop as evidence for very early metallurgy in Crete (chapter 13, pp. 155-177). (brynmawr.edu)
  • Early Metallurgy in Scandinavia: Continuity or Discontinuity? (lu.se)
  • The study of metal production is subdivided into ferrous metallurgy (also known as black metallurgy) and non-ferrous metallurgy (also known as colored metallurgy). (wikipedia.org)
  • Ferrous metallurgy involves processes and alloys based on iron, while non-ferrous metallurgy involves processes and alloys based on other metals. (wikipedia.org)
  • To advance the knowledge of ferrous metallurgy and support the global ferrous metallurgy community by providing forums for the exchange of information and ideas. (aist.org)
  • Research into the history of mining and metallurgy encompasses both the archaeological record and historical documentation and research. (jernkontoret.se)
  • Research into the history of mining and metallurgy has been closely tied to Jernkontoret, ever since the 1920's. (jernkontoret.se)
  • Metallurgy is distinct from the craft of metalworking. (wikipedia.org)
  • Metalworking relies on metallurgy in a similar manner to how medicine relies on medical science for technical advancement. (wikipedia.org)
  • Metallurgy I introduces the fundamental concepts required to understand the metallurgical phenomena that affect welding and welded materials. (aws.org)
  • Chemical metallurgy is chiefly concerned with the reduction and oxidation of metals, and the chemical performance of metals. (wikipedia.org)
  • Subjects of study in chemical metallurgy include mineral processing, the extraction of metals, thermodynamics, electrochemistry, and chemical degradation (corrosion). (wikipedia.org)
  • Historically, metallurgy has predominately focused on the production of metals. (wikipedia.org)
  • Metallurgy is the first step in the production of high-quality metals - and perhaps the most important. (sms-group.com)
  • Stay involved by viewing past Metallurgy - Processing, Products & Applications Technology Committee meetings and activities. (aist.org)
  • This award recognizes distinguished achievements determined by the Metallurgy - Processing, Products & Applications Technology Committee (MPPATC). (aist.org)
  • View Members who have joined the Metallurgy - Processing, Products & Applications Technology Committee in the last 30 days. (aist.org)
  • With more than six years of industrial and research experience in laser materials processing, metallurgy and materials science, he has worked extensively in process optimization and control of laser cladding and E-Beam direct metal deposition. (wn.com)
  • The China( Guangzhou ) Int ' l Metal and Metallurgy Exhibition consists of raw materials, processing equipment, and products. (rudmet.ru)
  • Metallurgy is a domain of materials science and engineering that studies the physical and chemical behavior of metallic elements, their inter-metallic compounds, and their mixtures, which are known as alloys. (wikipedia.org)
  • Since 2001, Kleinfelder has participated in the design of the Chemical and Metallurgy Research Replacement (CMRR) program, which includes constructing two major buildings - a Radiological Laboratory Utility Office Building (RLUOB) and a CMRR Nuclear Facility - to be constructed at the Los Alamos National Laboratory (LANL). (kleinfelder.com)
  • In Metallurgy and Materials we explore how materials behave and how they can be used and improved. (birmingham.ac.uk)
  • This exhibition brought together the latest technologies and set new trends in the metal and metallurgy industry. (rudmet.ru)
  • Cyanide salts are used in metallurgy for electroplating, metal cleaning, and removing gold from its ore. (cdc.gov)
  • In contrast to the traditional slow trial-and-error approach, the Accelerated Metallurgy project advocates the accelerated discovery and optimisation of higher-performance alloy formulations using combinatorial principles. (sintef.no)
  • Many applications, practices, and devices associated or involved in metallurgy were established in ancient China, such as the innovation of the blast furnace, cast iron, hydraulic-powered trip hammers, and double acting piston bellows. (wikipedia.org)
  • This course introduces the concepts of welding metallurgy. (montgomery.edu)
  • The volume under review, edited by Philip P. Betancourt, is a multidisciplinary study of the Bronze Age metallurgy workshop at Chrysokamino on Crete. (brynmawr.edu)
  • The Historical Metallurgy Group has ten members and is multidisciplinary in character. (jernkontoret.se)
  • CAIRO - 7 July 2022: Chairman of the Metallurgy Research and Development Center Emad Eweis stated Thursday that the establishment had carried out 70 projects worth more than LE86 million since 2014, and that those are in the fields of research, and maintenance of labs and factories. (egypttoday.com)
  • Working as an integrated team, we ensure all aspects of your metallurgy and process development requirements are considered, developing innovative solutions that ensure the smooth-running of your operations. (sgs.com)
  • We are going to present a study case ran in a metallurgy of ABC's region of São Paulo State. (bvsalud.org)
  • AccMet (Accelerated metallurgy - The accelerated discovery of alloy formulations using combinatorial principles) was a project aimed at fast development of new ternary and higher-level alloy compositions. (birmingham.ac.uk)
  • Our team provides value-added and timely metallurgy and consulting services. (sgs.com)
  • It was in the mid-1960's that a historical metallurgy group was first established. (jernkontoret.se)
  • A committee of experts works under the Historical Metallurgy Group. (jernkontoret.se)
  • The core concept of Accelerated Metallurgy is to deliver an integrated pilot-scale facility for the combinatorial synthesis and testing of many thousands of unexplored alloy formulations. (sintef.no)