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Structure of Hydrothermally Stable Acid Sites and their Catalytic Role in P-Modified ZSM-5 Zeolite Revealed by Solid-State NMR Spectroscopy.
Inorg Chem
January 2025
State Key Laboratory of Molecular & Process Engineering, SINOPEC Research Institute of Petroleum Processing, Beijing 100083, China.
The ZSM-5 zeolite is the key active component in high-severity fluid catalytic cracking (FCC) catalysts and is routinely activated by phosphorus compounds in industrial production. To date, however, the detailed structure and function of the introduced phosphorus still remain ambiguous, which hampers the rational design of highly efficient catalysts. In this work, using advanced solid-state NMR techniques, we have quantitatively identified a total of seven types of P-containing complexes in P-modified ZSM-5 zeolite and clearly revealed their structure, location, and catalytic role.
View Article and Find Full Text PDFMechanical Analysis of Phellinus Linteus-Induced Apoptosis of Hepatoma Cells.
Microsc Res Tech
January 2025
International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun, China.
Liver cancer is prevalent with the third highest mortality rate globally. The biomechanical properties of cancer cells play a crucial role in their proliferation and differentiation. Studying the morphological and mechanical properties of individual living cells can be helpful for early diagnosis of cancers.
View Article and Find Full Text PDFHeart-brain microvascular MRI study: protocol for a multicentre, observational, cohort study in the UK assessing associations between small vessel disease of the heart and brain.
BMJ Open
December 2024
British Heart Foundation Glasgow Cardiovascular Research Centre, University of Glasgow, Glasgow, UK
Introduction: Ischaemic heart disease (IHD) and cerebrovascular disease are leading causes of morbidity and mortality worldwide. Cerebral small vessel disease (CSVD) is a leading cause of dementia and stroke. While coronary small vessel disease (coronary microvascular dysfunction) causes microvascular angina and is associated with increased morbidity and mortality.
View Article and Find Full Text PDFObservational study: effect of varying transport durations and feed withdrawal on the physiological status and health of dairy calves.
Ir Vet J
January 2025
Department of Biological and Pharmaceutical Sciences, Munster Technological University Kerry, Tralee, V92 CX88, Ireland.
Long-distance transport and associated fasting of unweaned calves have the potential to compromise the animals' welfare. This observational study aimed to determine how transport and fasting durations impacted the physiology and health of 115 transported calves in three transport groups; IRE (n = 20, mean age 29.8d; short road transport (~ 29 h incl.
View Article and Find Full Text PDFUsing low-cost sensors to assess common air pollution sources across multiple residences.
Sci Rep
January 2025
School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
The rapid development of low-cost sensors provides the opportunity to greatly advance the scope and extent of monitoring of indoor air pollution. In this study, calibrated particle matter (PM) sensors and a non-negative matrix factorisation (NMF) source apportionment technique are used to investigate PM concentrations and source contributions across three households in an urban residential area. The NMF is applied to combined data from all houses to generate source profiles that can be used to understand how PM source characteristics are similar or differ between different households in the same urban area.
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