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Artykuły w czasopismach na temat „Copper-T”

Autor: Grafiati

Data publikacji: 3 czerwca 2025

Data aktualizacji: 31 lipca 2025

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1

Zewar, Sardar. "Technical Note:Curve fitting, for: {T} type thermocouple {Copper-constamtine}." Journal of Zankoy Sulaimani - Part A 2, no. 2 (1999): 74–79. http://dx.doi.org/10.17656/jzs.10041.

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Mandarano, Alexandra H., and Maureen A. McGargill. "Copper homeostasis is critical for T cell activation." Journal of Immunology 208, no. 1_Supplement (2022): 166.08. http://dx.doi.org/10.4049/jimmunol.208.supp.166.08.

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Abstract Elevated copper levels are associated with autoimmune disease, infection, and tumors in both humans and mice. Modulating copper availability is a promising potential intervention to treat these diseases. However, the mechanisms underlying the beneficial impact of copper modulation in disease are poorly understood. Moreover, the role of copper homeostasis in immune function, including in T cell responses, is not clear. Copper is a required cofactor for proteins involved in essential T cell processes, including extracellular matrix regulation, signaling pathways, mitochondrial metabolis

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3

Sehgal, A., B. Gupta, and S. Malhotra. "Intravesical migration of copper-T." International Journal of Gynecology & Obstetrics 68, no. 3 (2000): 265–66. http://dx.doi.org/10.1016/s0020-7292(99)00174-5.

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4

Tong, Xiong, Bin Han, Shuai Peng Ren, and Bo Yang. "Recovery of Copper from Copper Smelter Slag by Flotation." Applied Mechanics and Materials 496-500 (January 2014): 406–9. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.406.

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The recovery of copper from copper smelter slag utilizing flotation has been studied. A copper smelter slag from the Wang Jiaqiao smelter in Yunnan Province of china, containing 2.76% Cu, 44.41% Fe, 2.34% Zn and 18.4g/t Ag and so on, has been used .The effective factors such as grinding fineness, pH, and the dosage and type of collector were examined. Under the ﬂotation condition of grinding fineness (90%-74μm), rougher pH 6, XT-53(80 g/t), and 2# oil (30g/t) , copper grade of 23.55 %, recovery of 85.61% was obtained. Besides, silver get a recovery of 76.2% and grade of 143.07g/t as associated

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5

Thapa, Shekhar, Ganesh Dangal, Aruna Karki, et al. "Missing Intrauterine Device Copper-T: Case Series." Journal of Nepal Health Research Council 16, no. 3 (2018): 354–56. http://dx.doi.org/10.33314/jnhrc.v16i3.1209.

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An intrauterine contraceptive device (IUD) is a long acting, highly effective, economic and reversible method of contraception used worldwide. The most used devices are copper IUD (Copper-T) or Progesterone IUD. Common complications include failed insertion, pain, vasovagal reactions, infection, menstrual abnormalities, expulsion and rarely uterine embedment and perforation. In this case series we will discuss three cases of missing Copper-T. In one case Copper T was inserted at our hospital and in the other cases it was inserted in the periphery and all the cases was managed surgically with d

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6

Thapa, Shekhar, Ganesh Dangal, Aruna Karki, et al. "Missing Intrauterine Device Copper-T: Case Series." Journal of Nepal Health Research Council 16, no. 3 (2018): 354–56. http://dx.doi.org/10.3126/jnhrc.v16i3.21438.

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An intrauterine contraceptive device (IUD) is a long acting, highly effective, economic and reversible method of contraception used worldwide. The most used devices are copper IUD (Copper-T) or Progesterone IUD. Common complications include failed insertion, pain, vasovagal reactions, infection, menstrual abnormalities, expulsion and rarely uterine embedment and perforation. In this case series we will discuss three cases of missing Copper-T. In one case Copper T was inserted at our hospital and in the other cases it was inserted in the periphery and all the cases was managed surgically with d

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7

Maji, Aritra, and Aditi C Ramachandra. "The Unusual Case of a Copper T Migrating to the Ovary." Indian Journal of Obstetrics and Gynecology 7, no. 2 (2019): 327–29. http://dx.doi.org/10.21088/ijog.2321.1636.7219.35.

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8

Devi, T. Ramani, S. Shameema Banu, T. Harini, and P. Kanimozhi. "Transmigration of copper T presenting as abdominal wall mass: a case report." International Journal of Reproduction, Contraception, Obstetrics and Gynecology 10, no. 4 (2021): 1729. http://dx.doi.org/10.18203/2320-1770.ijrcog20211170.

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Copper T is one of the widely used intra uterine contraceptive devices due to its safe, effective and reversible nature. It has also been widely used as it is cost effective too. Copper T is usually inserted immediate post-partum, post abortal, during the proliferative phase of any menstrual cycle or 6 to 8 weeks following post-partum. Complications associated with use of Copper T include heavy menstrual bleeding, pelvic inflammatory disease, uterine perforation, displacement and rarely, transmigration. Post-insertion of copper T, women need to have regular follow up visits to prevent such com

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9

Gupta, Nishi, and Sukriti Chandra. "Laparoscopic retrieval of misplaced copper T." International Journal of Research in Medical Sciences 6, no. 4 (2018): 1457. http://dx.doi.org/10.18203/2320-6012.ijrms20181315.

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Intrauterine contraceptive device is important part of family planning services in India. These can be inserted post menstrually, post abortal, post-delivery or in post puerperal period. Associated complications include bleeding, pain, infection, expulsion and most serious complication as perforation of uterine wall and migration to adjacent organs. We present a case of successful laparoscopic retrieval of a misplaced cuT. A 30-year-old female para 2 live 1 presented in SDMH outpatient department with right sided lower abdominal pain since one year. NCCT scan of pelvis showed IUCD in pelvic ca

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10

Rafat Khan, Mubashra, Bhagyashree Patil, and Meenakshi Devarmani. "MISPLACED COPPER T: A COMPREHENSIVE OVERVIEW." International Journal of Advanced Research 12, no. 08 (2024): 1508–14. http://dx.doi.org/10.21474/ijar01/19397.

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Worldwide, the second most popular form of birth control is Cu T because it is a long term, reversible, highly effective and cost effective contraceptive. In an international study sponsored by the WHO, the average annual failure rate of Copper T was 0.4% or less. Uterine perforation is one of the most dreaded complications of Copper T insertion. The frequency of this occurrence is estimated to be between 0.05 and 13 per 1000 insertions (average, 1.2/1000) and appears to depend on the type of device placed, the skill of the operator, position of the uterus, and intensity of follow-up. A detail

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11

Darlong, LalengM, Subrat Panda, Noor Topno, and Ranendra Hajong. "Colonoscopic retrieval of migrated copper-T." Journal of Minimal Access Surgery 5, no. 2 (2009): 40. http://dx.doi.org/10.4103/0972-9941.55107.

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12

Areesanan, Alexander, Luise Wolf, Sven Nicolay, Amy Marisa Zimmermann-Klemd, and Carsten Gründemann. "Immunomodulatory Effects of Copper Bis-Glycinate In Vitro." Molecules 30, no. 6 (2025): 1282. https://doi.org/10.3390/molecules30061282.

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Copper functions as a cofactor and antioxidants in a large number of enzymes that are important for cellular respiration and the nervous system. In the last century scholars have explored copper’s relationship with the immune system, with copper deficiency drastically upsetting the overall function of the immune system, as seen in symptoms such as increased susceptibility to pathogens, decreased proliferation of lymphocytes, and impaired function of both cytotoxic T lymphocytes and helper T cells. Among copper’s various forms, copper bis-glycinate (Cbg) has been used as an official EU-approved

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13

T. Gokila and M. R. Rajan. "Effect of different quantities of CuO nanoparticles on growth, biochemical characteristics and yield of lady’s finger Abelmoschus esculentus." World Journal of Biology Pharmacy and Health Sciences 13, no. 2 (2023): 228–37. http://dx.doi.org/10.30574/wjbphs.2023.13.2.0095.

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The present study aimed at the effect of different quantities of copper oxide nanoparticles on the growth, biochemical characteristics and yield of Lady’s finger Abelmoschus esculentus. Copper oxide nanoparticles were synthesized and characterized by using UV-Vis spectroscopy, SEM, EDAX, and FTIR. Pot culture studies on different quantities of copper nanoparticles such as 50, 100, 150,200 and 250mg for treatments T₀ (control) T₁, T₂, T₃, T₄, T₅ respectively on growth, biochemical characteristics and yield of Lady’s finger Abelmoschus esculentus were estimated after 45 days. The UV-Visible abso

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14

Patankar, Alka, and Rajendra Wakankar. "MICROBIAL AND CLINICOCYTOLOGICAL STUDY IN COPPER - T (CU - T) USERS." Journal of Evolution of Medical and Dental Sciences 4, no. 47 (2015): 8143–52. http://dx.doi.org/10.14260/jemds/2015/1180.

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15

GOPI, R., R. K. AVASTHE, H. KALITA, A. YADAV, S. K. DAS, and DINISHA RAI. "Eco-friendly management of tomato late blight using botanicals, bio-control agents, compost tea and copper fungicides." Indian Journal of Agricultural Sciences 90, no. 1 (2020): 35–39. http://dx.doi.org/10.56093/ijas.v90i1.98525.

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Tomato is affected by the major disease late blight caused by Phytophthora infestans in Sikkim. In vitro experiment of biocontrol agents, botanicals and organically approved chemicals evaluated against P. infestans revealed that garlic, Trichoderma harzianum, copper oxychloride and copper hydroxide were effective. In field experiment conducted during 2014 and 2015, copper oxychloride @0.25% was found most effective followed by copper hydroxide @0.25% for the management of late blight. The pooled mean yield of tomato treated with copper oxychloride was recorded highest with 8.99 t/ha, 24.50 t/h

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16

Mandarano, Alexandra H., and Maureen A. McGargill. "The critical role of copper homeostasis during the immune response." Journal of Immunology 210, no. 1_Supplement (2023): 148.13. http://dx.doi.org/10.4049/jimmunol.210.supp.148.13.

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Abstract Copper homeostasis is tightly regulated in living organisms, as copper is essential to numerous cellular processes but toxic in excess. Dysregulated copper homeostasis is associated with numerous human diseases, including genetic diseases of copper transport, cancer, autoimmune disease, and infection. Although patients with mutations in copper transporters have an increased susceptibility to infection, little is known about the changes in immune function in these diseases. Further, altering copper availability has shown promise in treating either autoimmunity or infection, but the mec

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17

Armo, Meena, Indu Bala Minj, Anju Rani Triki, Namita Shrivastava, and Sonal Mishra. "Copper T (380 A) and risk of uterine perforation in lactating women: rural scenario." International Journal of Reproduction, Contraception, Obstetrics and Gynecology 6, no. 7 (2017): 3026. http://dx.doi.org/10.18203/2320-1770.ijrcog20172928.

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Background: Copper T 380 A is commonly used as PPIUCD as well as Interval contraception in rural areas of Chhattisgarh. Studies have reported that interval insertion of intrauterine device in women during their lactation period is associated with high risk of uterine perforation as compared to postpartum insertion similar as our study.Methods: 50 consecutive women were included, who came in family planning OPD of Chhattisgarh Institute of Medical Sciences (CIMS), a Government Medical College, with history of copper T insertion, during their lactation period, within one year of child birth. The

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18

T., Gokila, and R. Rajan M. "Effect of different quantities of CuO nanoparticles on growth, biochemical characteristics and yield of lady's finger Abelmoschus esculentus." World Journal of Biology Pharmacy and Health Sciences 13, no. 2 (2023): 228–37. https://doi.org/10.5281/zenodo.8026824.

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The present study aimed at the effect of different quantities of copper oxide nanoparticles on the growth, biochemical characteristics and yield of Lady’s finger <em>Abelmoschus esculentus</em>. Copper oxide nanoparticles were synthesized and characterized by using UV-Vis spectroscopy, SEM, EDAX, and FTIR. Pot culture studies on different quantities of copper nanoparticles such as 50, 100, 150,200 and 250mg for treatments T₀ (control) T₁, T₂, T₃, T₄, T₅ respectively on growth, biochemical characteristics and yield of Lady’s finger <em>Abelmoschus esculentus </em>were

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19

A., G. Ohihoin, T. Mutihir J., A. O. Ujah I., N. Ohihoin E., C. Herbertson E., and C. Ezechi O. "Tolerability of The Copper- T Intrauterine Device by Acceptors at Jos University Teaching Hospital, Jos, North-Central Nigeria." British Journal of Medicine & Medical Research 21, no. 11 (2017): 1–5. https://doi.org/10.9734/BJMMR/2017/31897.

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<strong>Background:</strong> The Copper-T (Cu-T) Intrauterine device (IUD) is one of the oldest and most reliable forms of contraception. Its widespread use has been limited by side effects, such as heavy menstrual flow and pain on insertion. Findings suggest that the intrauterine device acts more as a contraceptive than an abortifacient, thus improving its acceptability. <strong>Objectives:</strong> To determine the proportion of women using Cu-T IUD, who will develop side effects during the study period; Outline experienced side effects of Cu-T; and ascertain the discontinuation rate and rea

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20

Goyal, Sunder, and Snigdha Goyal. "Displaced intrauterine device: A retrospective study." Journal of Medical Research 2, no. 2 (2016): 41–43. http://dx.doi.org/10.31254/jmr.2016.2207.

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Intrauterine contraceptive devices (IUCD) are used worldwide since 1965.The intrauterine device (copper-T) is most common method used for contraception as it is an economical and effective method. It is associated with complications like bleeding, perforation and migration to neighboring organs or omentum. Perforation of the urinary bladder by an IUD is extremely rare. A retrospective study was carried out in a medical college to find out the incidence of displacement of copper-T over a period of one year (Jan 2013 to Dec 2013). Total 240 copper-T were inserted as IUD. There were only two case

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21

Upadhye, Jayshree J., Smita K. Parate, Aditi J. Upadhye, and Rasika D. Zade. "Why women refuse Postpartum IUCD?" Journal of Family Medicine and Primary Care 14, no. 1 (2025): 377–81. https://doi.org/10.4103/jfmpc.jfmpc_131_24.

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ABSTRACT Background: Women are highly motivated and receptive to accepting family planning methods during the antenatal period. Hence, we conducted this study to evaluate the refusal rate and reasons for the refusal of postpartum Intrauterine Contraceptive Devices (PPIUCD). Material and Methods: The present cross-sectional study was conducted in the Department of Obstetrics and Gynaecology, at a tertiary Care Centre, on 400 antenatal women from November 2023 for 2 months. Results: In present study, 331 (82.8%) subjects were knowing condom as contraceptive, followed by 310 (77.5%) subjects know

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Rathi, Imkong, and Shravan Kumar. "Statistical Evaluation of Flotation Behavior of Chalcopyrite in the Presence of SIPX and Acetoacetic Acid n-Octyl Ester as a Novel Collector Blend: A Sustainable Approach." Minerals 14, no. 10 (2024): 1003. http://dx.doi.org/10.3390/min14101003.

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The chalcopyrite deposit in Malanjkhand, India, is the largest copper ore producer in the country. However, its flotation performance has room for improvement. This study used standard flotation experiments using a mechanical flotation cell using a conventional collecting reagent and a collector blend consisting of xanthate and ester. A three-factor, three-level Box-Behnken design was used to statistically evaluate the experimental design. The obtained data were analyzed using an ANOVA, cubic plots, and response surface methods. The goal was to evaluate the effects and interactions of three ke

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Deng, Zheng Bin, Xiong Tong, Xiao Wang, Qing Yan Zhao, Xian Xie, and Xiang Wen Lv. "Research on the Flotation of Low Grade Copper-Nickle Ore." Advanced Materials Research 989-994 (July 2014): 1411–14. http://dx.doi.org/10.4028/www.scientific.net/amr.989-994.1411.

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Effect of grinding fineness and inhibitors on mixed flotation of low copper and nickel were studied and a new nickel inhibitor YS was used in the process of separation of copper and nickel. The results indicated that the high-quality mixed concentrate with the recoveries of Cu and Ni 76% and 65.6% and the grade of Cu and Ni were 4.66% and 4.3%, respectively, was got under the condition of sodium silicate (200 g/t), CMC (200 g/t), copper sulphate200 g/t, amyl xanthate 100 g/t and pine oil 30 g/t with the grinding fineness of-0.074mm80%. Then, Qualified Cu concentrate with the grade26.65% and re

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24

Oxland, Richard K., Xu Li, Susan Ferguson, Steven Bentley, and Iain G. Thayne. "Copper-plated 50 nm T-gate fabrication." Journal of Vacuum Science & Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phenomena 28, no. 6 (2010): C6P6—C6P10. http://dx.doi.org/10.1116/1.3501346.

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Wang, Yi Jie, Shu Ming Wen, Jian Liu, Qi Cheng Feng, and Meng Yang Lv. "Research on Flotation Tests of Sulfide Copper Ore from Yunan." Advanced Materials Research 634-638 (January 2013): 3466–71. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.3466.

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The mineral processing flow sheet and reagent system of flotation copper minerals from a large copper-iron deposit in Yunnan were fully investigated. The results indicate that the optimum conditions for flotation of copper minerals from the material were identified as grinding fineness of 85%, dosage of CaO at 2000g/t , dosage of Na2S at 200 g/t, dosage of butyl xanthate 40g/t. Under such a condition, a copper recovery of 88.17% with a concentrate grade of 26.86% was achieved from the material using a closed circuit flow sheet of "one-stage roughing flotation, one-stage cleaning flotation and

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Xiong, Fei, Yan Jun Li, Zhong Hui Zhang, and Yao Zhong Lan. "Flotation of Low-Grade DongChuan Copper Oxide Ores with Xanthate and Hydroxamate Collectors." Advanced Materials Research 803 (September 2013): 137–41. http://dx.doi.org/10.4028/www.scientific.net/amr.803.137.

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A hydroxamate collector AM28 is used in conjunction with Potassium Amyl Xanthate (PAX) to allow the flotation of the low-grade copper oxide ores from DongChuan Mine. A series of batch laboratory scale flotation tests are conducted for oxide copper minerals to establish the flotation response and the suitability of the collectors. From the rougher flotation tests performed, the highest copper recovery obtained is 78.9% at a concentrate grade of 2.5% using AM28 dosage of 740g/t and PAX dosage of 20g/t. With one stage of cleaning, the obtained copper grade increases to 9.6% with the copper recove

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Ohno, Katie M., Amy B. Bishell, and Glen R. Stanosz. "Differential Expression of a Putative Copper Homeostasis CutC Gene in Fibroporia radiculosa During Initial Decay of Copper-Treated Wood." Forest Products Journal 70, no. 4 (2020): 469–75. http://dx.doi.org/10.13073/fpj-d-20-00043.

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Abstract Living organisms require copper for several cellular processes. Yet intracellular concentrations of copper must be regulated to avoid toxicity. Not much is known about mechanisms of copper regulation in wood decay fungi. However, one putative annotation for a copper homeostasis CutC gene (FIBRA_00129), found in other brown-rot wood decay fungi, has been annotated in Fibroporia radiculosa. The aim of this study was to evaluate wood mass loss and differential expression of FIBRA_00129 during initial decay of untreated and copper-treated wood by two copper-tolerant F. radiculosa isolates

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Jikia, Nana, Demur Talakhadze, and Anzor Abshilava. "Processing Questions of Madneuli Copper Enrichment Plant Tails." Works of Georgian Technical University, no. 2(528) (May 29, 2023): 47–54. http://dx.doi.org/10.36073/1512-0996-2023-2-47-54.

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Madneuli copper enrichment plant works since 1975. This plant works on copper sulphide ores from Madneuli and Sakdrisi deposits. In some ores due to difficulties of blotting secondary copper sulphides, recovery of copper in commercial production is low – 60-65%. At the same time, concentration of copper in tails is 0.17-0.19% and concentration of gold in tails 0.3-0.6 gr/t. In this article we consider combine technology of processing rich flotation tiles: preinrichment by gravity (use centrifugal concentrator and/or short noise hydrocyclone). Gravity concentrate with au and cu 5.47 gr/t, and 0

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Feng, Qi Cheng, Shu Ming Wen, Ci Yun Chen, He Fei Zhao, Yi Jie Wang, and Chao Lv. "Extraction of Copper from a Refractory Copper Oxide Ore by Catalytic Oxidation Acid Leaching." Advanced Materials Research 734-737 (August 2013): 941–44. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.941.

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The study aimed to extract copper from copper oxide ores in which copper minerals had a complex association and dissemination with gangue minerals in the form of fine grain by catalytic oxidation acid leaching. Based on the research on the properties of the material and lots of experiments, the leaching process was performed. The optimum parameters of leaching process were determined as sulfuric acid dosage of 150 kg/t, KMnO4 dosage of 1500 g/t, liquid/solid mass ratio of 3 and leaching time of 45 minutes. Under such a condition, the leaching efficiency of 90.15% was achieved, which provided a

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Feng, Qi Cheng, Shu Ming Wen, Kun Xiong, Jian Liu, and Shao Jun Bai. "Recovery of Copper from a High Content of Slime and Refractory Copper Oxide Ore by Flotation." Advanced Materials Research 622-623 (December 2012): 170–74. http://dx.doi.org/10.4028/www.scientific.net/amr.622-623.170.

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The study aims to recover copper minerals from a high content of slime and refractory copper oxide ore by flotation process. Based on the research on the properties of the material, the grinding fineness and reagent system are investigated and a technological flow sheet consisting of one roughing flotation, two concentrate flotation, three scavenging flotation and one concentrate-scavenging flotation is adopted. The optimum parameters of flotation experiment are determined as grinding fineness of 90%, dosage of CHO at 200 g/t, dosage of Na2S at 800 g/t and dosage of isoamyl xanthogenate at 120

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Zhang, Yong Ming, Peng Zhi Xiang, and Ying Bo Mao. "Experimental Research on the Recovery of Copper from Pregnant Solution Highly Containing Cu." Applied Mechanics and Materials 316-317 (April 2013): 1029–32. http://dx.doi.org/10.4028/www.scientific.net/amm.316-317.1029.

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This paper use the copper content of copper-rich solution is 49.43g/L for electrolyte, and it effecting factors of the quality of electric copper electrodeposition are studied. The results show that under the these conditions of the electrodeposition current density is 180A/m2, and time of electrodeposition is 1.5h, concentration of NH4+ in electrolyte is less than 2g/L, thiourea is 40 g/t and Henkel glue is 40 g/t, the cathode copper which have less impurity content and Cu+Ag≥99.95% could be obtained.

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Králík, L., E. Flachsová, H. Hansíková, V. Saudek, J. Zeman, and Pavel Martásek. "Molecular Diagnostics of Copper-Transporting Protein Mutations Allows Early Onset Individual Therapy of Menkes Disease." Folia Biologica 63, no. 5-6 (2017): 165–73. http://dx.doi.org/10.14712/fb2017063050165.

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Menkes disease is a severe X-linked recessive disorder caused by a defect in the ATP7A gene, which encodes a membrane copper-transporting ATPase. Deficient activity of the ATP7A protein results in decreased intestinal absorption of copper, low copper level in serum and defective distribution of copper in tissues. The clinical symptoms are caused by decreased activities of copper-dependent enzymes and include neurodegeneration, connective tissue disorders, arterial changes and hair abnormalities. Without therapy, the disease is fatal in early infancy. Rapid diagnosis of Menkes disease and early

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Quezada, Víctor, Oscar Benavente, Cristopher Beltrán, Danny Díaz, Evelyn Melo, and Antonio García. "Dissolution of Black Copper Oxides from a Leaching Residue." Metals 10, no. 8 (2020): 1012. http://dx.doi.org/10.3390/met10081012.

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This article presents the behavior of black copper minerals in reducing acid leaching using FeSO4 as reducing agent. The original sample, which was a blend of green and black copper minerals, was treated first by an oxidizing acid leach using O3 to dissolve the soluble phase (green copper oxides). The residue (mainly black copper) was evaluated by agitated leaching under three different solution potentials, with respect to the standard hydrogen electrode (SHE) (450, 500, and 600 mV (SHE)) at 25 °C. The original sample and the leach residue were characterized by scanning electron microscope (SE

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Wang, Yi Jie, Shu Ming Wen, Dan Liu, Qin Bo Cao, Qi Cheng Feng, and Chao Lv. "Sulphidizing Flotation of Copper Oxide Ore." Advanced Materials Research 807-809 (September 2013): 2279–83. http://dx.doi.org/10.4028/www.scientific.net/amr.807-809.2279.

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The copper oxide ore in Dali, which contains 0.69% of copper and 11.24g/t of silver, was beneficiated by sulphidizing - xanthate flotation method. The flotation tests were carried out systematically with sodium sulfide as sulphidizing agent and butyl xanthate + ammonium dibutyl dithiophosphate as the combined collectors. Through closed-circuit test, a copper concentrate with 18.34% of Cu grade and a recovery of 70.13% were obtained. In addition, silver also was enriched in copper concentration with a grade of 329.37g/t and a recovery of 78.79%, which is convenience for utilization in metallurg

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35

Goyal, Seema, Gurinder Bir Singh, and Ranju Singla. "Role of Artistic Copper-T Shiksha Model to sensitize women for the use of Copper–T as a safe contraceptive." Indian Journal of Community Health 35, no. 4 (2023): 481–84. http://dx.doi.org/10.47203/ijch.2023.v35i04.014.

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The contraceptives are integral part of healthy sexual life. The choice of contraceptives depends on family planning and will of couple specially woman. Copper-T, an intrauterine device (IUD) is one of the most effective, cheapest and reversible contraceptive methods. It can be used for both spacing and birth control and it has minimum side effects as compared to other contraceptives. But it is highly neglected contraceptive though Copper- T has High pearl index and has less failure rate than other temporary contraceptive methods. As most of women are unaware of its potential significance &amp

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Sakamoto, Keiko, Yoshihiro Agari, Kazuko Agari, Seiki Kuramitsu, and Akeo Shinkai. "Structural and functional characterization of the transcriptional repressor CsoR from Thermus thermophilus HB8." Microbiology 156, no. 7 (2010): 1993–2005. http://dx.doi.org/10.1099/mic.0.037382-0.

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The TTHA1719 gene from Thermus thermophilus HB8 encodes an orthologue of the copper-sensing transcriptional repressor CsoR. X-ray crystal structure analysis of T. thermophilus CsoR indicated that it forms a homotetramer. The structures of the CsoR monomer and dimer are similar to those of Mycobacterium tuberculosis CsoR. In the absence of copper ions, T. thermophilus CsoR bound to the promoter region of the copper-sensitive operon copZ-csoR-copA, which encodes the copper chaperone CopZ, CsoR and the copper efflux P-type ATPase CopA, to repress their expression, while in the presence of approxi

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Azizi, Asghar, Mojtaba Masdarian, Ahmad Hassanzadeh, Zahra Bahri, Tomasz Niedoba, and Agnieszka Surowiak. "Parametric Optimization in Rougher Flotation Performance of a Sulfidized Mixed Copper Ore." Minerals 10, no. 8 (2020): 660. http://dx.doi.org/10.3390/min10080660.

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The dominant challenge of current copper beneficiation plants is the low recoverability of oxide copper-bearing minerals associated with sulfide type ones. Furthermore, applying commonly used conventional methodologies does not allow the interactional effects of critical parameters in the flotation processes to be investigated, which is mostly overlooked in the literature. To tackle this issue, the present paper aimed at characterizing the behavior of five key effective factors and their interactions in a sulfidized copper ore. In this context, dosage of collector (sodium di-ethydithiophosphat

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Mu, Xiao, Duan Kang, and Jian Hua Chen. "Flotation Behavior of Smelting Abandoned Copper Slags." Advanced Materials Research 734-737 (August 2013): 1045–48. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.1045.

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The flotation of smelting copper slags in Yunnan has been studied in this paper. The influences of grinding fineness, different kinds of collectors and the dosage of sodium sulfide, GZT, which influence the flotation results, are tested. The experimental results show that in the first stage of roughing, a good flotation result is obtained, the concentrate copper grade reaches 24.12% and the flotation recovery rate reaches 82.98%, when the grade of copper slags is about 2.1%, under the circumstances that the grinding fineness is 85.6%, the amount of Y-89 is 400g/t, the amount of sodium sulfide

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39

Othman, Nasim A. R. M. "Optimization of copper for the improvement of in vitro plant tissue growth of Solanum nigrum." European Journal of Biological Research 9, no. 2 (2019): 77–92. https://doi.org/10.5281/zenodo.2848646.

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Here was investigated the incorporation of copper in MS medium on growth, and metabolic activities of <em>Solanum nigrum</em> callus. Copper up to 75 µM increased the growth, and thereafter a decline was observed. No considerable alteration in MDA, H<sub>2</sub>O<sub>2</sub>, bound phenolics, flavonoids, ascorbate, and copper content was observed with the existence of 25 µM copper, then levels of these parameters were raised with rising copper concentrations. Similarly, 25 µM copper didn't induce a considerable change in lipoxygenase, superoxide dismutase, catalase, perox

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Ge, Bao Liang, Qing Li, Jie Liu, Yan Xiong Fu, and Guang Hua Hu. "Roughing Conditions Research to Recover a Nickel Ore." Advanced Materials Research 813 (September 2013): 234–37. http://dx.doi.org/10.4028/www.scientific.net/amr.813.234.

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The ore from Jingping contains 0.634% nickel, 0.329% copper, 0.047% cobalt, 30.18% SiO2and 19.72% MgO. In order to obtain satisfying beneficiation results, a lot of tests were taken out before, and this article main focus on roughing flotation conditions. Finally find that when the sodium carbonate dosage is 2000g/t, carboxy-methyl cellulose (CMC) dosage is 200g/t, sodium silicate dosage is 100g/t, the combinational effect can depressing the gangue minerals as well as the slime. The final concentration contains 3.03% nickel, 2.01% copper and 2.40% cobalt, the recovery of the nickel, copper and

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Niedoba, Tomasz, Paulina Pięta, Agnieszka Surowiak, and Oktay Şahbaz. "Multidimensional Optimization of the Copper Flotation in a Jameson Cell by Means of Taxonomic Methods." Minerals 11, no. 4 (2021): 385. http://dx.doi.org/10.3390/min11040385.

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Three factors were measured in the flotation process of copper ore: the copper grade in a concentrate (β), the copper grade in tailings (ϑ), and the recovery of copper in a concentrate (ε). The experiment was conducted by means of a Jameson cell. The factors influencing the quality of the process were the particle size (d), the flotation time (t), the type of collector (k), and the dosage of the collector (s). The considered vector function is then (β(d, t, k, s), ϑ(d, t, k, s), ε(d, t, k, s)). In this work, the optimization was based on determining the values of the adjustable factors (d, t,

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Batar, Istvan, Laszlo Lampe, Istvan Rakoczi, Istvan Gati, and Hannu Allonen. "A comparison between Nova T and Copper T 200 Ag in Hungary." International Journal of Gynecology & Obstetrics 25, no. 1 (1987): 59–63. http://dx.doi.org/10.1016/0020-7292(87)90185-8.

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Guo, Yan Hua, Hui Xin Dai, and Jun Long Yang. "Research of the Complex Copper Slag Flotation Experiment." Advanced Materials Research 734-737 (August 2013): 972–76. http://dx.doi.org/10.4028/www.scientific.net/amr.734-737.972.

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A kind of complex Copper slag has been studied. The run-of-mine grade of copper was 0.93%. Through the research of the flotation separation test, the optimal grinding fineness (-0.074mm) was about to 75%. The optimum kind and dosage of collector was 150 g/t Y89. The dosage of sodium silicate which was the Slime dispersing agent was 1000g/t. The dosage of sodium carbonate was 800g/t.

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Shai-Hee, Tyler, Toni Rose Jue, Riccardo Cazzoli, et al. "Abstract 1418: Priming of the glioblastoma tumour microenvironment via copper chelation to enhance the efficacy of immunotherapies." Cancer Research 84, no. 6_Supplement (2024): 1418. http://dx.doi.org/10.1158/1538-7445.am2024-1418.

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Abstract Glioblastoma, a highly aggressive brain tumor with a dismal prognosis necessitates novel therapeutic approaches as current standard treatments yield limited success. Despite the transformative impact of immune checkpoint blockade in various malignancies, its efficacy in glioblastoma remains elusive. Similarly, chimeric antigen receptor T (CAR-T) cell therapy, while successful in hematological malignancies, faces challenges in solid tumors. This study addresses the immunosuppressive barriers hindering the effectiveness of immunotherapies in glioblastoma. Highlighting copper's pivotal r

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Xiong, Sang, Jian Lin Sun, and Yang Xu. "Adsorption Behavior of Thiadiazole as Corrosion Inhibitors on Copper Surface." Materials Science Forum 817 (April 2015): 204–11. http://dx.doi.org/10.4028/www.scientific.net/msf.817.204.

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Adsorption behavior of four typical thiadiazole derivatives as corrosion inhibitors on copper surface both in vacuum and aqueous media, including 1,3,4-thiadiazole-2,5-mercapto (T-SH), (1,3,4-thiadiazole-2,5-diyl) bis (sulfanol) (T-OH), S,S'-(1,3,4-thiadiazole-2,5-diyl) bis (O-hydrogen carbonothioate) (T-COOH) and O,O'-dimethyl S,S'-(1,3,4-thiadiazole-2,5-diyl) bis (carbonothioate) (T-COOCH3), has been theoretically studied using quantum chemistry calculations and molecular dynamics simulations method, and the corrosion inhibition mechanism has been analyzed. The present conclusions have been

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46

McNulty, Brian A., Simon M. Jowitt, and Ivan Belousov. "THE IMPORTANCE OF GEOLOGY IN ASSESSING BY- AND COPRODUCT METAL SUPPLY POTENTIAL; A CASE STUDY OF ANTIMONY, BISMUTH, SELENIUM, AND TELLURIUM WITHIN THE COPPER PRODUCTION STREAM." Economic Geology 117, no. 6 (2022): 1367–85. http://dx.doi.org/10.5382/econgeo.4919.

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Abstract The ongoing global transition to low- and zero-CO2 energy generation and transport will require more raw materials and metals than ever produced before in human history to develop the necessary infrastructure for solar and wind power generation, electric power grid distribution, and electric vehicle componentry, including batteries. In addition to numerous critical elements, this transition will also require increased production of a range of other metals. This includes copper, with increased production of this metal providing the minerals industry with enhanced opportunities to secur

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Singla, Neha, Taranjit Kaur, Tanisha, Tajveer Kaur, and Simrat Kaur. "Knowledge and attitude towards birth spacing and copper T usage among women of reproductive age group." International Journal of Reproduction, Contraception, Obstetrics and Gynecology 13, no. 11 (2024): 3160–65. http://dx.doi.org/10.18203/2320-1770.ijrcog20243169.

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Background: Birth spacing is the time interval between two births. Short birth intervals or inter-pregnancy intervals are associated with negative maternal health outcomes as well as negative perinatal, neonatal, and infant health outcomes. Safety effective methods of contraception such as copper T-380 A, have allowed many women around the world to avoid the health risks of unwanted pregnancy and have provided for the spacing of pregnancies. The objective of the present study was to assess the level of knowledge and attitude towards birth spacing and copper-T usage among women of reproductive

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Zhang, Yi, Shu Ming Wen, and Shao Jun Bai. "Research on Reinforcing Acid Leaching of a Refractory Copper Oxide Ore with High Content of Slime and Iron Minerals." Advanced Materials Research 524-527 (May 2012): 1062–69. http://dx.doi.org/10.4028/www.scientific.net/amr.524-527.1062.

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The characteristics of Yangla copper oxide ore and acid leaching of this copper ore were investigated. The results indicate direct dump acid leaching of raw ore is not feasible for the treatment of this copper ore in practice. Sieve sizing-warming-stirring-acid leaching process was employed for the treatment of the fine grain materials below 1m, while 66.19% copper leaching efficiency and10.92 t H2SO4 consumption for per ton are obtained. Dump acid leaching process was employed for the treatment of the coarse grain materials above 1 mm, while 68.65% copper leaching efficiency and 15.43 t H2SO4

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Tong, Xiong, Xiao Wang, and Zheng Bin Deng. "Research on Au-Bearing Copper Ore in Flotation from Yunnan." Applied Mechanics and Materials 496-500 (January 2014): 410–13. http://dx.doi.org/10.4028/www.scientific.net/amm.496-500.410.

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In this study, the main aims were to recovery copper from Au-bearing Copper Ore by flotation. The main mineral is copper with 1.18% Cu and 0.75g/t Au. Same chalcopyrite in fine parts is encapsulated in gangue minerals, and some copper minerals exist as the intergrowth with pyrrhotite and pyrite. After study, the suitable mineral combined processing flowsheet of mixed flotation-copper sulphur separation with stage grinding and stage separation which consisting of one rougher-five concentrate-four scavenging flotation and highly efficient collector YL-3 developed independently,which has not only

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Liu, Dan, Shu Ming Wen, Yong Jun Xian, Hai Ying Shen, Jiu Shuai Deng, and Dan Dan Wu. "Recovery of Copper from Flotation Tailings by Leaching." Applied Mechanics and Materials 325-326 (June 2013): 128–32. http://dx.doi.org/10.4028/www.scientific.net/amm.325-326.128.

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A technology route of Reverse flotation of acid-consuming gangue mineralsAcid leaching for copperExtractingElectrodepositing is proposed for recovery copper from a tailings with high content of calcium oxide and magnesium oxide and high content of combined copper oxide. The effect of H2SO4concentration, leaching time and stirring speed on copper leaching was investigated. The leaching solution obtained under the optimal copper leaching conditions, was used to be proceeded for extracting and electrodepositing test. The best leaching conditions are stirring speed of 30 m/min, H2SO4concentration

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