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Fouling and Chemical Cleaning Strategies for Submerged Ultrafiltration Membrane: Synchronized Bench-Scale, Full-Scale, and Engineering Tests.
Membranes (Basel)
November 2024
College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, China.
This study investigated membrane fouling issues associated with the operation of a submerged ultrafiltration membrane in a drinking water treatment plant (DWTP) and optimized the associated chemical cleaning strategies. By analyzing the surface components of the membrane foulant and the compositions of the membrane cleaning solution, the primary causes of membrane fouling were identified. Membrane fouling control strategies suitable for the DWTP were evaluated through chemical cleaning tests conducted for bench-scale, full-scale, and engineering cases.
View Article and Find Full Text PDFCircadian Influences on Brain Lipid Metabolism and Neurodegenerative Diseases.
Metabolites
December 2024
Department of Foundations of Medicine, New York University Grossman Long Island School of Medicine, Mineola, NY 11501, USA.
Circadian rhythms are intrinsic, 24 h cycles that regulate key physiological, mental, and behavioral processes, including sleep-wake cycles, hormone secretion, and metabolism. These rhythms are controlled by the brain's suprachiasmatic nucleus, which synchronizes with environmental signals, such as light and temperature, and consequently maintains alignment with the day-night cycle. Molecular feedback loops, driven by core circadian "clock genes", such as Clock, Bmal1, Per, and Cry, are essential for rhythmic gene expression; disruptions in these feedback loops are associated with various health issues.
View Article and Find Full Text PDFAdaptive Disturbance Rejection Motion Control of Direct-Drive Systems with Adjustable Damping Ratio Based on Zeta-Backstepping.
Biomimetics (Basel)
December 2024
Devol Advanced Automation, Inc., Shenzhen 518101, China.
Direct-drive servo systems are extensively applied in biomimetic robotics and other bionic applications, but their performance is susceptible to uncertainties and disturbances. This paper proposes an adaptive disturbance rejection Zeta-backstepping control scheme with adjustable damping ratios to enhance system robustness and precision. An iron-core permanent magnet linear synchronous motor (PMLSM) was employed as the experimental platform for the development of a dynamic model that incorporates compensation for friction and cogging forces.
View Article and Find Full Text PDFOligometastatic Disease Is Not an Absolute Contraindication to Pelvic Exenteration in Selected Patients With Locally Recurrent Rectal Cancer.
Dis Colon Rectum
December 2024
Surgical Outcomes Research Centre (SOuRCe), Royal Prince Alfred Hospital, Sydney, Australia.
Background: The treatment of locally recurrent rectal cancer has evolved dramatically in recent decades. As the boundaries of exenterative surgery continue to be pushed, one of the unanswered and controversial questions is the role of radical salvage surgery for locally recurrent rectal cancer in the setting of oligometastatic disease.
Objective: To investigate the impact of synchronous or previously treated distant metastases on survival following pelvic exenteration for locally recurrent rectal cancer.
Light responses during early day phases of CIRCADIAN CLOCK ASSOCIATED 1 (CCA1) and PSEUDO-RESPONSE REGULATOR (PRR) homologous genes in the moss Physcomitrium patens.
Photochem Photobiol
December 2024
Graduate School of Informatics, Nagoya University, Nagoya, Japan.
Circadian clocks facilitate organisms' adaptation to the day-night environmental cycle. Some of the component genes of the clocks ("clock genes") respond directly to changes in ambient light, supposedly allowing the clocks to synchronize to and/or oscillate robustly in the environmental cycle. In the dicotyledonous model plant Arabidopsis thaliana, the clock genes CIRCADIAN CLOCK ASSOCIATED 1 (CCA1), LATE ELONGATED HYPOCOTYL (LHY) and PSEUDO-RESPONSE REGULATOR 9 (PRR9) show transient expression in response to the morning light.
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