26 papers · ranked by Valyu relevance
Zian Wang, Xinshu Li
correlations in COMEX copper futures Authors: ['Zian Wang' 'Xinshu Li'] This paper examines the influence of low-frequency macroeconomic variables on the high-frequency returns of copper futures and the long-term correlation with the S&P 500 index, employing GARCH-MIDAS and DCC-MIDAS modeling frameworks. The estimated…
Paweł Szymański, Tomasz Frączek, Magdalena Markowicz, Elżbieta Mikiciuk-Olasik
'Elżbieta Mikiciuk-Olasik'] Copper is one of the most interesting elements for various biomedical applications. Copper compounds show vast array of biological actions, including anti-inflammatory, anti-proliferative, biocidal and other. It also offers a selection of radioisotopes, suitable for nuclear imaging and…
Zian Wang, Xinyi Lu
Learning Authors: ['Zian Wang' 'Xinyi Lu'] This paper investigates the forecasting performance of COMEX copper futures realized volatility across various high-frequency intervals using both econometric volatility models and deep learning recurrent neural network models. The econometric models considered are GARCH and…
Yan Li, Dezhi Liu, Ruobin Gao, Yang Yu + 1 more
Accurate forecasting of copper futures prices is crucial for risk management and investment decisions. However, existing approaches primarily rely on historical prices and incorporate behavioral signals without a unified modeling framework. To address this limitation, we propose MBTI-Net (Multi-source…
Hongliang Zhou, Andong Chang, Junling Fan, Jun Cao + 7 more
'Jie Xia' 'Jingguang Yao' 'Xiaobin Cui' 'Yingchong Zhang' 'Wenchao Tian' 'Yongkun Wang'] This paper provides a comprehensive review on copper (Cu) wire bonding. Firstly, it introduces the common types of Cu wire available in the market, including bare Cu wire, coated Cu wire, insulated Cu wire, and alloyed Cu wire. For…
Authors not listed
Atomically precise copper nanoclusters (Cu NCs) have emerged as a distinctive class of catalysts that bridge molecular complexes and conventional nanoparticles. Their well-defined nuclearity, discrete electronic structures, and tunable ligand environments enable direct structure–activity correlations that are…
Jiwei Huang, Wenrui Zhang, Weitong Gao, Tao Guo + 3 more
Copper is an essential trace element that plays a significant role in human physiological functions. However, abnormal accumulation of copper can trigger a programmed cell death mechanism known as cuproptosis, which has a significant pathological impact, especially in orthopedic diseases such as osteoarthritis (OA)…
Leyi Yao, Baoyi Jiang, Dacai Xu
Cancer cells often develop tolerance to chemotherapy, targeted therapy, and immunotherapy drugs either before or during treatment. The significant heterogeneity among various tumors poses a critical challenge in modern cancer research, particularly in overcoming drug resistance. Copper, as an essential trace element in…
Jia Wei He, Pei Zhen Li, Zi Xuan Huang
Prostate cancer (PCA) remains a significant health challenge, necessitating the exploration of novel therapeutic strategies to enhance patient outcomes. Recent research has identified cuproptosis, a copper-dependent programmed cell death mechanism, as a promising target in PCA treatment. Elevated copper levels have…
Zihao Xie, He Wang, Bohua You, Mengmeng Li + 2 more
Sepsis-induced cardiomyopathy (SCM) is a severe, mortality-increasing sepsis complication, with copper homeostasis imbalance as a key pathogenic factor. Copper (Cu) plays a dual role: as an essential enzyme cofactor, it regulates vital processes including energy metabolism and redox balance; however, both excess and…
RUI SERRA-MAIA, Joel Varley, Stephen Weitzner, Henry Yu + 4 more
Copper-based nanoparticles are key electrocatalysts for CO2 electrochemical reduction (CO2 ER) to liquid fuels and other value-added products. However, the copper catalyst can undergo rapid electrochemical corrosion, leading to a loss of catalyst material, fluctuations in the reaction conditions and increasing…
Mehran Tehrani
Advanced electrical conductors that outperform copper and aluminum can revolutionize our lives, enabling billions of dollars in energy savings and facilitating a transition to an electric mobility future. Nanocarbons (carbon nanotubes and graphene) present a unique opportunity for developing advanced conductors for…
Jorge Vera-Otarola, Nicolas Mendez, Constanza Martínez-Valdebenito, Rodolfo Mannheim + 2 more
The aerosols are critical for SARS-CoV-2 transmission, however in areas with high confluence of people the contaminated surfaces take an important role that we could attack using antimicrobial surfaces including copper. In this study, we wanted to challenge infectious SARS-CoV-2 with two samples of copper surfaces and…
Yunuo Yang, Jiaxuan Wu, Lisheng Wang, Guang Ji + 1 more
Copper is a vital trace element in human physiology, essential for the synthesis of numerous crucial metabolic enzymes and facilitation of various biological processes. Regulation of copper levels within a narrow range is imperative for maintaining metabolic homeostasis. Numerous studies have demonstrated the…
Bastianin, Andrea, Rossini, Luca + 2 more
This paper develops a real-time forecasting framework for monthly real prices of four key industrial metals – aluminum, copper, nickel, and zinc – whose demand is rising due to their widespread use in manufacturing and low-carbon technologies. To replicate the information set available to forecasters in real time, we…
Gregor P. Jose, Subhankar Santra, Saurav Kumar Saha, Swadhin K Mandal + 1 more
In this study, the effect of polymer stabilized copper nanoparticles and ionic copper on the growth, nucleic acid pool, reactive oxygen species generation, cell surface lipopolysaccharide, outer membrane protein profile and cell surface morphology of Escherichia coli were investigated. Copper nanoparticles exhibited a…
Nicky Savjani, Vicente Orts Mercadillo, Su Zhao, Lorenzo Fabbri + 7 more
Copper plating of industrial components is common. However, the application of copper to moving parts is limited due to its poor tribological properties. In this study, a novel nickel-flashed, graphene nanoplatelet-reinforced copper matrix coating (referred to as ML(Ni)) on AISI 52100 steel exhibited stable and…
Authors not listed
Copper metallic films are essential components in semiconductor devices. We study deposition of copper films by a pulsed electron chemical vapor deposition (e-CVD) process using free electrons from a plasma discharge as reducing agents, with copper beta-diketonates, Cu(hfac)2 and Cu(acac)2 as the copper source. The…
Niansheng Ren, Liuyang Wang, Rajesh K. Dutta, David S. Umbaugh + 6 more
Systemic metabolic dysfunction promotes degenerative diseases in many organs, including liver and kidney. The liver is a master regulator of systemic metal ion homeostasis. Hepatic copper deficiency is increasingly observed in metabolic dysfunction associated steatotic liver disease (MASLD) and is associated with…
Christina M Rodriguez, Kazzrie A Arnold, Elizabeth R Everman
Copper is an essential micronutrient in most organisms that becomes toxic in large quantities. Repeated or prolonged sub-lethal exposure can lead to evolved resistance to copper toxicity over many generations, which may result in trade-offs between energetically expensive detoxification mechanisms and fitness.…
Authors not listed
Interconnects are crucial for the operation of electronic devices and consists of a diffusion barrier, liner layer and the metal copper. However, this tri-layer stack is putting limits on the scaling down of interconnects and as a result is limiting future device miniaturization. Issues such as a pinch-off effect at…
Yara Ghnamah, Caitlin D. Palmer, Nurit Livnat-Levanon, Moti Grupper + 2 more
Copper is an essential micronutrient in all kingdoms of life, requiring a meticulous balance between acquisition and toxic overload. While copper import in eukaryotes has been investigated extensively, few prokaryotic copper importers have been identified, leading to the notion that cytoplasmic copper uptake is…
Authors not listed
Green nanotechnology is recognized as a sustainable and environmentally friendly approach for the synthesis of metal nanoparticles (NPs). In this study, yerba mate (Ilex paraguariensis) extract was used as a natural reducing and stabilizing agent for the synthesis of copper oxide nanoparticles (CuO NPs), offering an…
Goksin Kavlak, James McNerney, R. L. Jaffe, Jessika E. Trancik
If global photovoltaics (PV) deployment grows rapidly, the required input materials need to be supplied at an increasing rate. In this paper, we quantify the effect of PV deployment levels on the scale of metals production. For example, we find that if cadmium telluride {copper indium gallium diselenide} PV accounts…
Gillian Cameron, Sebastien P. Faucher
Copper is frequently found in drinking water due to its presence in the natural environment and the widespread usage of copper pipes. This toxic metal has a well-known antimicrobial activity, an activity harnessed in copper-silver ionization (CSI) to eliminate the opportunistic pathogen Legionella pneumophila from…
Lucas Riondet, Daniel Suchet, Olivier Vidal, José Halloy
The Hubert's model has been introduced in 1956 as a phenomenological description of the time evolution of US oil fields production. It has since then acquired a vast notoriety as a conceptual approach to resource depletion. It is often invoked nowadays in the context of the energy transition to question the limitations…