Results 1 to 10 of about 340,596 (268)

Non-targeted Screening of Unknown Chemical Hazards in Imported Children’s Textiles by GC-Orbitrap MS [PDF]

open access: yesZhipu Xuebao, 2023
The quality and safety of children’s textiles, especially chemical safety, is very important. The harm to children caused by using unsafe products is immeasurable.
LIU Ya-hui1   +6 more
doaj   +1 more source

Risks and Risk Premiums in Commodity Markets [PDF]

open access: yes, 2022
This thesis investigates risks and risk premiums in several different commodity markets. In commodity markets risks are measured by volatility and risk premiums. Risk premiums are the additional returns required by an investor to hold a risky asset in contrast to a risk free asset, which has a zero risk premium.
Handika, Rangga   +5 more
openaire   +2 more sources

Application of magnetic analyzers for detecting carburization of pyrolysis furnace tubes

open access: yesFrontiers in Materials, 2023
Ethylene pyrolysis furnace is a key equipment in the ethylene production industry with the pyrolysis furnace tube being the core component of the system.
Chenyang Du   +13 more
doaj   +1 more source

Toxin-Encoding Genes and Drug Susceptibility of Staphylococcus aureus from Vegetables Consumed Raw [PDF]

open access: yesShipin Kexue, 2023
Objective: To investigate the toxin-encoding genes and antibiotic susceptibility of Staphylococcus aureus isolates from retail vegetables consumed raw. Methods: The 27 S.
BAI Xiaobao, SUO Jia, CAO Chenyang, SU Li, ZHAO Yuefan, LIU Lisha, FENG Chengqian, LÜ Xin, YANG Baowei
doaj   +1 more source

Market Discipline and Systemic Risk [PDF]

open access: yesManagement Science, 2020
We analyze a general equilibrium model in which financial institutions generate endogenous systemic risk. Banks optimally select correlated investments and thereby expose themselves to fire-sale risk so as to sharpen their incentives. Systemic risk is therefore a natural consequence of banks’ fundamental role as delegated monitors.
Alan D. Morrison, Ansgar Walther
openaire   +2 more sources

Non-targeted analysis of unknown volatile chemicals in medical masks

open access: yesEnvironment International, 2022
This paper reports the non-targeted analysis of unknown volatile chemicals in medical masks through headspace gas chromatography-Orbitrap high-resolution mass spectrometry.
Yahui Liu   +6 more
doaj   +1 more source

Testing 65 Equity Indexes for Normal Distribution of Returns [PDF]

open access: yesJournal of Economics and Management, 2018
Aim/purpose - The primary aim of the paper is to verify the hypothesis on the normal distributions of 65 stock index returns, while the secondary aims are to examine normal distributions for specific years (for six indexes) and for bull and bear markets (
Krzysztof Borowski
doaj   +1 more source

Surfactant-free interfacial growth of graphdiyne hollow microspheres and the mechanistic origin of their SERS activity

open access: yesNature Communications, 2023
As a two-dimensional carbon allotrope, graphdiyne possesses a direct band gap, excellent charge carrier mobility, and uniformly distributed pores. Here, a surfactant-free growth method is developed to efficiently synthesize graphdiyne hollow microspheres
Lu Zhang   +5 more
doaj   +1 more source

Research Progress on Alkaloids as Emerging Potential Risk Factors for Food Safety

open access: yesShipin gongye ke-ji, 2023
Alkaloids are a large class of secondary metabolites in plants with significant pharmacological activity. As the active ingredients of many Chinese herbal medicines, they have great application value in clinical medicine.
Hui LIU   +4 more
doaj   +1 more source

Risk Sharing in Labor Markets [PDF]

open access: yesSSRN Electronic Journal, 2003
Empirical work in labour economics has focused on rent sharing as an explanation for the observed correlation in cross-sections between wages and profitability. The alternative explanation of risk sharing between workers and employers has not been tested.
Bigsten, Arne   +11 more
openaire   +6 more sources

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