Oxidation of ethyl xanthate on platinum, gold, copper, and galena electrodes. Relation to the mechanism of mineral flotation
The hydrosilylation reaction enables the production of silicon polymers. Platinum-carbene complexes are reported that catalyze the hydrosilylation reaction of alkenes with remarkable efficiency and exquisite selectivity and avoid the formation of platinum colloids. By-products, typically encountered with previous catalytic systems, are suppressed with these platinum derivatives.
The development of resistance to platinum-based chemotherapy is a major clinical challenge in cancer treatment, since the cellular response which confers resistance to carboplatin is multifactorial and poorly understood (Wernyj, Morin, 2004; Shahzad, Berestein, Sood, 2009).It has been observed that the intracellular mechanisms by which cells become resistant to carboplatin include increased
Apr 30, 2019Survival from malignant mesothelioma, particularly pleural mesothelioma, is very poor. For patients with some cancers, overall survival following platinum chemotherapy is better for patients with germline mutations in DNA repair and related genes than for patients without such mutations. We evaluated this relationship for patients with malignant mesothelioma.
Oxaliplatin (ethanedioate-O, 𝑂 )platinum(II)] is a third-generation platinum compound widely used for the treatment of metastatic colorectal cancer and a variety of other malignancies, such as breast cancer, melanoma, non-Hodgkin lymphoma, and
Patients and Methods ABRAZO () was a two-cohort, two-stage, phase II study of talazoparib (1 mg/day) in germline BRCA mutation carriers with a response to prior platinum with no progression on or within 8 weeks of the last platinum dose (cohort 1) or ≥3 platinum-free cytotoxic regimens (cohort 2) for advanced breast cancer.
1 Froth Flotation Fundamental Principles Froth flotation is a highly versatile method for physically separating particles based on differences in the ability of air bubbles to selectively adhere to specific mineral surfaces in a mineral/water slurry. The particles with attached air
Background. Epithelial ovarian cancer (EOC) is the leading cause of gynecologic cancer death in the USA. Recurrence rates are high after front-line therapy and most patients event
The four sensory items accounted for 80% of treatment differences and 63% of longitudinal changes in the observed subscale score. The 11-item Ntx subscale reliably and validly assesses platinum/paclitaxel-induced peripheral neuropathy.
Corresponding Author. Department of Gynaecologic Oncology, Saitama Medical University International Medical Centre Comprehensive Cancer Centre, Hidaka, and
Aug 16, 2016The preclinical studies suggest apatinib may be effective in other cancers such as ovarian cancer. Therefore, the purpose of this study is to test the efficacy and safety of the study drug apatinib when combined with a standard treatment, etoposide, for patients with platinum resistant or refractory ovarian cancer.
Floatation can benefit anyone and everyone, the list of typical users below is by no means exhaustive. Everyone's experience is different but the benefits are universal.
Platinum catalysts are reported for the direct, low-temperature, oxidative conversion of methane to a methanol derivative at greater than 70 percent one-pass yield based on methane. The catalysts are platinum complexes derived from the bidiazine ligand family that are stable, active, and selective for the oxidation of a carbon-hydrogen bond of methane to produce methyl esters.
Jan 13, 2010Efficacy and Safety Study of Sorafenib With Topotecan in Patients With Platinum-resistant Recurrent Ovarian Cancer (TRIAS 2009) The safety and scientific validity of this study is the responsibility of the study sponsor and investigators.
A typical diesel exhaust emission control system for meeting the US EPA 2010 regulations includes one or more platinum-group metal (PGM)-containing catalysts, located upstream of an SCR unit. However, as was previously reported in literature, under certain operating conditions PGM elements can get t
The combination platinum, 5-fluorouracil (5-FU) and cetuximab is the standard first-line regimen of recurrent and/or metastatic head and neck squamous cell carcinoma (HNSCC). Due to the toxicity of this treatment, alternative therapies are often offered to patients. The aim of this study was to evaluate the overall survival obtained with a first line chemotherapy adapted to patients functional
The paper will propose reasons to explain the dThe results were investigated further using various surface characterization techniques in order to determine the reason for the decrease in grades and recoveries of platinum when using dry milling and HPGR as opposed to the case for base metal sulphides. ifferent flotation behaviour of the two ore types following the various comminution
flotation platinum measurements nkozihomes Improved flotation performance at Karee Platinum Mine . The flotation plant of Karee Platinum Mine is especially suited for doing test work It is well instrumented and has a modern PLC and banks with ultrasonic level measurements linked to proportional and integral PI level control loops on the existing programmable logical controller PLC The
Previous research by the U.S. Bureau of Mines has shown that autoclave cyanide leaching of used automobiles exhaust catalysts for recovery of platinum group metals (PGM) is technically feasible. The purpose of this work was to investigate the chemistry of the dissolution of
Optimal treatment for recurrent/metastatic head and neck cancer J. B. Vermorken. Optimal treatment for recurrent/metastatic head and neck cancer, Annals of Oncology, Volume 21, Issue suppl_7 The study population in most of the studies is a mixture with respect to prior platinum treatment of R/M-SCCHN and therefore cannot be considered
In this study, two black shale copper ores from different Mid-European Kupferschiefer-type deposits and their flotation concentrates were used for bioleaching tests. All samples were subjected to stirred tank bioleaching using an acidophilic, moderately thermophilic microbial consortium. The distribution of sulfides and gangue minerals in the ores, copper concentrates and residues of both
Nov 20, 2018Hettle R, Sackeyfio A, Gill J, et al. Comparative efficacy and safety of olaparib 300 mg tablets bid and niraparib 300 mg tablets qd as maintenance treatment after response to chemotherapy in patients with platinum-sensitive relapsed germline BRCA
Flotation of Chromite as Pre-Treatment of Olivine Before Carbonation for CO 2 Sequestration Laura Turri 1, Herv Muhr 1, Cristielen Rech 1, 2, Franois Lapicque 1, * 1 Laboratoire Ractions et Gnie des Procds, CNRS Universit de Lorraine, 54001 Nancy, France.
Methods. We retrospectively identified 212 patients with HNSCC who were treated at a single academic medical center with concurrent platinum-based CRT given weekly (N = 68) or eve
The latter technique has been developed in continuous flotation columns or in other pilot or industrial devices for processing of UG2 ore in South Africa to remove the major chromite-containing part of the ore, in view to recovering platinum group elements. Guar gum was added as depressant and polyglycol ethers or alkoxy substituted
DOI 10 1595/147106704X1667 Treatment of Platinum . Fig 2 Flowsheet showing the treatment of flotation concentrates of low-sulfide platinum-containing ores Platinum Metals Rev 2004 48 3 127 maximum drop in recovery is seen with a L S liq- Treatment of Platinum Flotation
The backbone of ovarian cancer treatment is platinum-based chemotherapy and aggressive surgical debulking. New therapeutic approaches using immunotherapy via
the platinum group metal (PGM) production from the Bushveld Igneous Complex in northern South Africa (McLaren and de Application of fundamentals in optimizing platinum concentrator performance by M.M. Valenta* and H. Mapheto* Synopsis A number of challenges face platinum concentrator plant operators.
CiteSeerX Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda) Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Platinum agents (cisplatin, carboplatin, and oxaliplatin) are a class of chemotherapy agents that have a broad spectrum of activity against several solid tumors.
Patients in the TN group had a significantly shorter time to commence platinum-based treatment from the time of being diagnosed with metastatic disease (7 versus 17 months; P = 0.03). As shown, a total of 120 of 155 (77%) had previously been treated with anthracyclines and 125 of 155 (81%) with taxanes.