Articles de revues : « Chemical Significance »

1

Debus, Allen G. « The Significance of Chemical History ». Ambix 32, n^o 1 (mars 1985) : 1–14. http://dx.doi.org/10.1179/amb.1985.32.1.1.

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Maguire, R. James. « Significance of Environmental Chemical Measurements ». Journal of Great Lakes Research 13, n^o 2 (janvier 1987) : 101. http://dx.doi.org/10.1016/s0380-1330(87)71634-7.

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Hoshino, Mihoko, Mitsuyoshi Kimata, Norimasa Nishida et Masahiro Shimizu. « Crystal chemical significance of chemical zoning in dissakisite-(Ce) ». Physics and Chemistry of Minerals 35, n^o 2 (3 novembre 2007) : 59–70. http://dx.doi.org/10.1007/s00269-007-0198-y.

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DAGANI, RON. « Big Bang findings carry chemical significance ». Chemical & ; Engineering News 70, n^o 18 (4 mai 1992) : 5–6. http://dx.doi.org/10.1021/cen-v070n018.p005.

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Mbosso, Emmanuel Jean Teinkela, René Wintjens, Bruno Ndjakou Lenta, Silvère Ngouela, Michel Rohmer et Etienne Tsamo. « Chemical Constituents fromGlyphaea brevisandMonodora myristica:Chemotaxonomic Significance ». Chemistry & ; Biodiversity 10, n^o 2 (février 2013) : 224–32. http://dx.doi.org/10.1002/cbdv.201100378.

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Ghanta Mahesh Reddy, Mehendra Shiradkar et Akula Kalyan Chakravarthy. « Chemical and Pharmacological Significance of 1,4-Dihydropyridines ». Current Organic Chemistry 11, n^o 10 (1 juillet 2007) : 847–52. http://dx.doi.org/10.2174/138527207781024058.

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Risebrough, Robert W. « Chemical change in Antarctica—Significance ? A perspective ». Marine Pollution Bulletin 25, n^o 9-12 (janvier 1992) : 227–30. http://dx.doi.org/10.1016/0025-326x(92)90673-t.

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Suk, William A., Kenneth Olden et Raymond S. H. Yang. « Chemical mixtures research : significance and future perspectives. » Environmental Health Perspectives 110, suppl 6 (décembre 2002) : 891–92. http://dx.doi.org/10.1289/ehp.110-1241268.

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LERNER, RICHARD A. « Life's Cosmic Significance ». Chemical & ; Engineering News 73, n^o 20 (15 mai 1995) : 40–41. http://dx.doi.org/10.1021/cen-v073n020.p040.

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MONDAL, Sourav, Nilanjan DE et Anita PAL. « Molecular descriptors of neural networks with chemical significance ». Revue Roumaine de Chimie 65, n^o 11 (2021) : 1031–44. http://dx.doi.org/10.33224/rrch.2020.65.11.08.

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The probabilistic neural networks (PNNs) are now being analysed to fix a variety of challenges in the diverse fields of science and technology. In chemical graph theory, there are several tools, such as polynomials, functions, etc. that can be used to characterize different network properties. The neighborhood M-polynomial (NM) is one of those that yields neighborhood degree sum based topological indices in a manner that is less time consuming than the usual approach. In this work, the NM-polynomial of 3-layered and 4-layered probabilistic neural networks are derived. Further, some neighborhood degree sum based topological indices are computed from those polynomials. Applications of the present work are interpreted by investigating the chemical importance of the indices. Some structure property models are derived. The graphical representations of the results are also reported.

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De Backer, W. A. « Methods and clinical significance of studying chemical drives ». Respiration Physiology 114, n^o 1 (octobre 1998) : 75–81. http://dx.doi.org/10.1016/s0034-5687(98)00074-7.

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Gigg, Roy. « The inositol phosphates — chemical synthesis and biological significance ». Carbohydrate Research 249, n^o 2 (novembre 1993) : C2—C4. http://dx.doi.org/10.1016/0008-6215(93)84106-g.

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Bergveld, P. « The significance of feedback control for chemical sensors ». Sensors and Actuators B : Chemical 8, n^o 1 (avril 1992) : 47–52. http://dx.doi.org/10.1016/0925-4005(92)85007-j.

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Petrini, Orlando, Luigi Cocchi, Luciano Vescovi et Liliane Petrini. « Chemical elements in mushrooms : their potential taxonomic significance ». Mycological Progress 8, n^o 3 (10 mars 2009) : 171–80. http://dx.doi.org/10.1007/s11557-009-0589-1.

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Felton, J. S., Pilar Pais, Cynthia P. Salmon et Mark G. Knize. « Chemical analysis and significance of heterocyclic aromatic amines ». Zeitschrift f�r Lebensmitteluntersuchung und -Forschung A 207, n^o 6 (30 novembre 1998) : 434–40. http://dx.doi.org/10.1007/s002170050357.

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Shears, Steve. « The inositol phosphates : Chemical synthesis and biological significance ». Trends in Biochemical Sciences 18, n^o 7 (juillet 1993) : 271–72. http://dx.doi.org/10.1016/0968-0004(93)90182-m.

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Koirala, S. « Significance of analysing chemical composition of renal stones ». Journal of Pathology of Nepal 4, n^o 7 (30 avril 2014) : 560–64. http://dx.doi.org/10.3126/jpn.v4i7.10314.

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Background: This article aims to decipher chemical composition of renal stones and briefly outline laboratory tests and dietary habitual changes aimed at preventing stone recurrence. It is based on analysis of 95 renal stones received in a private lab in Kathmandu over a period of 1 year. Materials and Methods: Renal stones were analysed using simple qualitative biochemical tests.The stones were checked for presence of calcium, magnesium, ammonium, oxalate, phosphate, uric acid, cystine and carbonate. Results: Calcium was present in 97.8%, ammonium was present in 98.9%, phosphate was present in 25.2%, uric acid was present in 17.8%, magnesium was present in 10.5%, carbonate was present in 2.1% and cystine was not present in any of the stones. Most of the stones were composed of mixture of two or more than two of the above mentioned elements. Conclusion: Most stones are mixture of more than two cations and anions. Studies on larger test samples and if possible in correlation with routine examination of urine and urinary electrolyte excretion in a 24 hr urine sample would further aid in efforts aimed at preventing stone recurrence. DOI: http://dx.doi.org/10.3126/jpn.v4i7.10314 Journal of Pathology of Nepal (2014) Vol. 4, 560-564

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OBERNBERGER, I., T. BRUNNER et G. BARNTHALER. « Chemical properties of solid biofuels—significance and impact ». Biomass and Bioenergy 30, n^o 11 (novembre 2006) : 973–82. http://dx.doi.org/10.1016/j.biombioe.2006.06.011.

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Hemmatian, B., B. Abdolhamidzadeh, R. M. Darbra et J. Casal. « The significance of domino effect in chemical accidents ». Journal of Loss Prevention in the Process Industries 29 (mai 2014) : 30–38. http://dx.doi.org/10.1016/j.jlp.2014.01.003.

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Patočka, Jiří, et Ladislav Středa. « Protein Biotoxins of Military Significance ». Acta Medica (Hradec Kralove, Czech Republic) 49, n^o 1 (2006) : 3–11. http://dx.doi.org/10.14712/18059694.2017.102.

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There is a spectrum of several threat agents, ranging from nerve agents and mustard agents to natural substances, such as biotoxins and new, synthetic, bioactive molecules produced by the chemical industry, to the classical biological warfare agents. The new, emerging threat agents are biotoxins produced by animals, plants, fungi, and bacteria. Many types of organisms produce substances that are toxic to humans. Examples of such biotoxins are botulinum toxin, tetanus toxin, and ricin. Several bioactive molecules produced by the pharmaceutical industry can be even more toxic than are the classical chemical warfare agents. Such new agents, like the biotoxins and bioregulators, often are called mid-spectrum agents. The threat to humans from agents developed by modern chemical synthesis and by genetic engineering also must be considered, since such agents may be more toxic or more effective in causing death or incapacitation than classical warfare agents. By developing effective medical protection and treatment against the most likely chemical and mid-spectrum threat agents, the effects of such agents in a war scenario or following a terrorist attack can be reduced. Toxin-mediated diseases have made humans ill for millennia. Unfortunately, the use of biological agents as weapons of terror has now been realized, and separating naturally occurring disease from bioterroristic events has become an important public health goal. The key to timely identification of such attacks relies on education of primary care physicians, first responders, and public health officials.

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Rangan, Urvashi, Christine Hedli, Michael Gallo, Paul Lioy et Robert Snyder. « Exposure and Risk Assessment with Respect to Contaminated Soil : Significance of Biomarkers and Bioavailability ». International Journal of Toxicology 16, n^o 4-5 (juillet 1997) : 419–32. http://dx.doi.org/10.1080/109158197227044.

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The evaluation of health risk from chemical exposure is evolving in concept and practice. The ability to sensitively detect levels of chemicals in the environment has served as the traditional foundation for determining exposure levels and consequent health risks. More recently, however, other parameters have been constructed to probe the pathway between environmental levels of a chemical and the biological effects of subsequent exposure. Among these, two that are discussed in this paper are bioavailability and biomarker determinations. Chemicals in the environment often are associated with a medium such as airborne particulate, water, or soil. The interaction between the chemical and its medium is dependent on the physicochemical properties of the system. In some cases, such as 2, 3, 7, 8-tetrachlorodibenzo-p-dioxin (TCDD) in soil, the chemical becomes partially and irreversibly bound to the medium. Animalingestion studies of TCDD-contaminated soil suggest that some of the TCDD remains bound to the soil and does not cross the gastrointestinal barrier during digestion, and therefore only a fraction of the TCDD enters the blood and becomes bioavailable. The characterization of bioavailability provides for more accurate exposure assessment. Biomarker information potentially can validate exposure assessment information from bioavailability studies, elucidate specific biological effects from chemical exposure, and investigate genetic susceptibility issues that may increase the likelihood that an individual or population will experience increased health risks. Benzene-induced chromosome damage is discussed as an example of a significant biomarker that has demonstrated the potential for providing information useful for accurately prediction health risk.

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Saida, Gafarova, Zagirova Karina et Talmakhanova Ulzhan. « BIOECOLOGICAL PROPERTIES AND SIGNIFICANCE OF THE ORDINARY CASTONE (RICINUS COMMUNIS) ». International Journal of Medical Sciences And Clinical Research 02, n^o 04 (1 avril 2022) : 35–39. http://dx.doi.org/10.37547/ijmscr/volume02issue04-06.

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The article provides information about the biological and ecological properties of the castor bean, its chemical composition, agricultural technology, application in the aviation industry, soap, leather, paint and varnish production and medicine.

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Wang, Jia-Lin, Ya-Min Zhao et Yin Qiang. « Chemical constituents from Ferula sinkiangensis and their chemotaxonomic significance ». Biochemical Systematics and Ecology 105 (décembre 2022) : 104519. http://dx.doi.org/10.1016/j.bse.2022.104519.

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London, David, et David A. C. Manning. « Chemical variation and significance of tourmaline from Southwest England ». Economic Geology 90, n^o 3 (1 mai 1995) : 495–519. http://dx.doi.org/10.2113/gsecongeo.90.3.495.

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Palusinska-Szysz, Marta, et Ryszard Russa. « Chemical Structure and Biological Significance of Lipopolysaccharide from Legionella ». Recent Patents on Anti-Infective Drug Discovery 4, n^o 2 (1 juin 2009) : 96–107. http://dx.doi.org/10.2174/157489109788490316.

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Zhang, Jingyi, Kumaravel Kaliaperumal, Ziyue Liu et Jun Zhang. « Chemical constituents from Semiliquidambar chingii and their chemotaxonomic significance ». Biochemical Systematics and Ecology 100 (février 2022) : 104360. http://dx.doi.org/10.1016/j.bse.2021.104360.

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Hikal, Wafaa M., Kirill G. Tkachenko, Hussein A. H. Said-Al Ahl, Hoda Sany, Ali S. Sabra, Rowida S. Baeshen et Amra Bratovcic. « Chemical Composition and Biological Significance of Thymol as Antiparasitic ». Open Journal of Ecology 11, n^o 03 (2021) : 240–66. http://dx.doi.org/10.4236/oje.2021.113018.

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Al-Saleem, Muneera S. M., Ali A. El-Gamal, Shaza M. Al-Massarani, Lamya H. Al-Wahaibi, Soad A. L. Bayoumi, Omer A. Basudan, Maged S. Abdel-Kader et Wael M. Abdel-Mageed. « Chemical constituents from Nuxia congesta and their chemotaxonomic significance ». Biochemical Systematics and Ecology 99 (décembre 2021) : 104341. http://dx.doi.org/10.1016/j.bse.2021.104341.

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Wang, H., et J. E. Gillott. « Alkali – carbonate reaction : significance of chemical and mineral admixtures ». Magazine of Concrete Research 47, n^o 170 (mars 1995) : 69–75. http://dx.doi.org/10.1680/macr.1995.47.170.69.

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Zhang, Zi-Mo, Shuai Liu, Hui Yang, Ning Wang, Yun-He Zou, Peng-Yu Zhuang, Xiao-Xia Wang et Hang Liu. « Chemical constituents from Dendrobium chrysanthum and their chemotaxonomic significance ». Biochemical Systematics and Ecology 105 (décembre 2022) : 104522. http://dx.doi.org/10.1016/j.bse.2022.104522.

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Huff, J., J. Haseman et D. Rall. « Scientific Concepts, Value, and Significance of Chemical Carcinogenesis Studies ». Annual Review of Pharmacology and Toxicology 31, n^o 1 (avril 1991) : 621–52. http://dx.doi.org/10.1146/annurev.pa.31.040191.003201.

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González Muntadas, Joaquim. « Significance of the collective agreement in the chemical industry ». Anuario IET de Trabajo y Relaciones Laborales 1 (13 juillet 2013) : 157. http://dx.doi.org/10.5565/rev/aiet.16.

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Sharpe, F. Richard, et David R. Williams. « Content, Chemical Speciation, and Significance of Aluminum in Beer ». Journal of the American Society of Brewing Chemists 53, n^o 2 (avril 1995) : 85–92. http://dx.doi.org/10.1094/asbcj-53-0085.

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Zhang, Shouwen, Fang Cheng, Li Yang, Jinxiang Zeng, Fengyu Han, Xiuling Yu, Yuye Zhu, Guoyue Zhong et Junwei He. « Chemical constituents from Glehnia littoralis and their chemotaxonomic significance ». Natural Product Research 34, n^o 19 (14 mars 2019) : 2822–27. http://dx.doi.org/10.1080/14786419.2019.1586697.

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Sharpe, Alan G. « The solvation of halide ions and its chemical significance ». Journal of Chemical Education 67, n^o 4 (avril 1990) : 309. http://dx.doi.org/10.1021/ed067p309.

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Venkataraman, Bhawani. « Emphasizing the Significance of Electrostatic Interactions in Chemical Bonding ». Journal of Chemical Education 94, n^o 3 (9 janvier 2017) : 296–303. http://dx.doi.org/10.1021/acs.jchemed.6b00409.

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Zhao, Gui-Jun, Zhong-Xin Xi, Wan-Sheng Chen, Xia Li, Lei Sun et Lian-Na Sun. « Chemical constituents from Tithonia diversifolia and their chemotaxonomic significance ». Biochemical Systematics and Ecology 44 (octobre 2012) : 250–54. http://dx.doi.org/10.1016/j.bse.2012.06.019.

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Zhang, Lai-Bin, Jie-Li Lv, Hong-Li Chen, Xi-Qing Yan et Jin-Ao Duan. « Chemical constituents from Artemisia argyi and their chemotaxonomic significance ». Biochemical Systematics and Ecology 50 (octobre 2013) : 455–58. http://dx.doi.org/10.1016/j.bse.2013.06.010.

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Yin, Tianpeng, Min Wang, Zongbao Ding, Liang Deng et Wei Li. « Chemical constituents from Thalictrum delavayi and their chemotaxonomic significance ». Biochemical Systematics and Ecology 85 (août 2019) : 1–2. http://dx.doi.org/10.1016/j.bse.2019.04.002.

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Li, Danqi, Dandan Yue, Da Liu, Xuegui Liu et Shaojiang Song. « Chemical constituents from Bupleurum chinese and their chemotaxonomic significance ». Biochemical Systematics and Ecology 86 (octobre 2019) : 103929. http://dx.doi.org/10.1016/j.bse.2019.103929.

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Nidhal, Najat, Xue-Ming Zhou, Guangying Chen, Bin Zhang, Changri Han et Xiaoping Song. « Chemical constituents of Leucas zeylanica and their chemotaxonomic significance ». Biochemical Systematics and Ecology 89 (avril 2020) : 104006. http://dx.doi.org/10.1016/j.bse.2020.104006.

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Liu, Rui, et Hong-Chi Zhang. « Chemical constituents from Aristolochia tagala and their chemotaxonomic significance ». Biochemical Systematics and Ecology 90 (juin 2020) : 104037. http://dx.doi.org/10.1016/j.bse.2020.104037.

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Ziem, Grace E., et Linda L. Davidoff. « Illness from Chemical “Odors” : Is the Health Significance Understood ? » Archives of Environmental Health : An International Journal 47, n^o 1 (février 1992) : 88–91. http://dx.doi.org/10.1080/00039896.1992.9935949.

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Rehman, Najeeb Ur, Hidayat Hussain, Liaqat Ali, Amjad Khan, Fazal Mabood, Zabta Khan Shinwari, Javid Hussain et Ahmed Al-Harrasi. « Chemical Constituents of Acridocarpus orientalis and Their Chemotaxonomic Significance ». Chemistry of Natural Compounds 55, n^o 3 (mai 2019) : 586–88. http://dx.doi.org/10.1007/s10600-019-02752-1.

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Rayner-Canham, Geoff, et Megan Oldford. « The chemical ‘Knight’s Move’ relationship : what is its significance ? » Foundations of Chemistry 9, n^o 2 (13 avril 2007) : 119–25. http://dx.doi.org/10.1007/s10698-007-9034-1.

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Wang, Kai, Stanislas Nsanzamahoro, Pei-Lin Li, Tian Chai, Cheng-Bo Wang, Chun-Yan Sang, Jun Wang et Jun-Li Yang. « Chemical constituents from Lagopsis supina and their chemotaxonomic significance ». Biochemical Systematics and Ecology 106 (février 2023) : 104572. http://dx.doi.org/10.1016/j.bse.2022.104572.

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Aggarwal, Aryan, Luxita Sharma, Dhananjay Sharma, Shankar Dhobale, Nitin Deshmukh, Lokesh Barde et Harshal Tare. « Nutritional Significance of Benincasa hispida ». INTERNATIONAL JOURNAL OF PHARMACEUTICAL QUALITY ASSURANCE 14, n^o 02 (25 juin 2023) : 410–15. http://dx.doi.org/10.25258/ijpqa.14.2.28.

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Ash gourd is sometimes known as wax gourd, and it’s scientific name is “Benincasa hispida,” also known as B. cerifera, and it is from the family- Cucurbitaece. B. hispida is said to be originated from Japan and Java, but it was widely cultivated in warm climates. It is one of the most well-known crops, farmed largely due to its fruits, and is known for its nutritional and therapeutic benefits, particularly in Asia. It’s a famous vegetable crop that was used both for nutrition and medicine. Volatile oils, flavonoids, saccharides, glycosides, vitamin, proteins, ß-sitosterin, minerals, carotenes, and uronic acid are among the major constituents of B. hispida fruits, according to phytochemical analysis. According to pharmacological studies, the pharmacological activities of this plant included central nervous effects (muscle relaxant, anxiolytic, antidepressant, in the Alzheimer’s disease treatment and to reduce opiates withdrawal symptoms), antioxidant tanalgesic, antiasthmatic, diuretic, antiinflammatory, hypolipidemic, antidiabetic, nephroprotective, and antimicrobial. B. hispida’s chemical constituents and pharmacological effects were highlighted in this review. This paper discusses the cultivation, nutritional and chemical content, as well as the medical and therapeutic properties of this versatile fruit as one of the potential sources of bioactives for functional foods, among other topics.

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Rao, Addanki Sambasiva, Medha A. Dharap et J. V. L. Venkatesh. « Experimental Study of the Effect of Post Processing Techniques on Mechanical Properties of Fused Deposition Modelled Parts ». International Journal of Manufacturing, Materials, and Mechanical Engineering 5, n^o 1 (janvier 2015) : 1–20. http://dx.doi.org/10.4018/ijmmme.2015010101.

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FDM (Fused Deposition Modelled) parts are chemically treated with two types of chemicals viz Dimethyl ketone (Acetone) and Methyl ethyl ketone to reduce the surface roughness. This chemical treatment method technique not only reduces surface roughness but also makes effect on strength of chemically treated parts of ABS (Acrylonitrile Butadiene Styrene) material. In this study Taguchi method of DOE (Design of Experiments) is conducted on test specimen of “tensile”, “bending” and “izod impact” components which are manufactured through Fused Deposition Modeling process using ABS-P400 material. DOE is conducted to optimize the effect of chemical treatment process parameters on strength of above specimen parts. The process parameters considered for the DOE are “different levels of concentration of chemical, temperature, time, layer thickness etc. ANOVA (Analysis of variance) is used to know the significance of contribution of each of these parameters. Results reveal that the prototypes when treated at optimum condition the tensile strength, flexural strength and izod impact strength improved significantly.

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SHIMIZU, Masamichi, Naonori AOYAGI, Shigero SHIBASAKI, Hiroshi INOUE et Ken-ichi OTSUKA. « Classification of wines by their chemical components. Significance of chemical components in wine. Part 2. » JOURNAL OF THE SOCIETY OF BREWING,JAPAN 81, n^o 2 (1986) : 113–20. http://dx.doi.org/10.6013/jbrewsocjapan1915.81.113.

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Komiyama, Hiroshi. « Present status of research on chemical vapor deposition methods and significance of chemical engineering approach. » KAGAKU KOGAKU RONBUNSHU 16, n^o 3 (1990) : 415–29. http://dx.doi.org/10.1252/kakoronbunshu.16.415.

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Articles de revues sur le sujet « Chemical Significance »

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