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Utilization of Tea Polyphenols as Color Developers in Reversible Thermochromic Dyes for Thermosensitive Color Change and Enhanced Functionality of Polyester Fabrics.
Molecules
October 2024
School of Textiles and Fashion, Shanghai University of Engineering Science, Shanghai 201620, China.
Thermochromic textiles possess the capability to indicate ambient temperature through color changes, enabling real-time temperature monitoring and providing temperature warnings for body heat management. In this study, three thermochromic dyes-blue, red, and yellow-were synthesized using crystalline violet lactone (CVL), 6'-(diethylamino)-1',3'-dimethyl-fluoran (DDF), and 3',6'-dimethoxyfluoran (DOF) as leuco dyes, respectively, with biomass tea polyphenol serving as the color developer and tetradecanol as the phase change material. The chemical structures of these dyes were characterized using UV spectroscopy, infrared spectroscopy, Raman spectroscopy and H NMR.
View Article and Find Full Text PDFDriving Sustainability in the United States: Efficacy of State-Level Biodiesel Policy Approaches.
Environ Sci Technol
October 2024
Civil and Environmental Engineering, University of Illinois Urbana-Champaign, 205 N Mathews Ave, MC-250, Urbana Illinois 61801, United States.
The United States has significant greenhouse gas and criteria pollutant emissions that lead to global warming, human health, ozone, and smog issues, partially attributed to its diesel-consuming transport fleet. Until fleet electrification reaches cost parity with internal combustion engines, biodiesel use can reduce these negative impacts. In this study, we analyzed and categorized the biodiesel-supporting policies of each U.
View Article and Find Full Text PDFBacterial diversity and biopotentials of Hamtah glacier cryoconites, Himalaya.
Front Microbiol
May 2024
Department of Biotechnology, Pachhunga University College, Mizoram University (A Central University), Aizawl, India.
Cryoconite is a granular structure present on the glaciers and ice sheets found in polar regions including the Himalayas. It is composed of organic and inorganic matter which absorb solar radiations and reduce ice surface albedo, therefore impacting the melting and retreat of glaciers. Though climate warming has a serious impact on Himalayan glaciers, the biodiversity of sub-glacier ecosystems is poorly understood.
View Article and Find Full Text PDFThe impact of heart valve and partial heart transplant models on the development of banking methods for tissues and organs: A concise review.
Cryobiology
June 2024
Department of Cardiovascular Surgery, Arkansas Children's Hospital, Little Rock, AR, USA. Electronic address:
Cryopreserved human heart valves fill a crucial role in the treatment for congenital cardiac anomalies, since the use of alternative mechanical and xenogeneic tissue valves have historically been limited in babies. Heart valve models have been used since 1998 to better understand the impact of cryopreservation variables on the heart valve tissue components with the ultimate goals of improving cryopreserved tissue outcomes and potentially extrapolating results with tissues to organs. Cryopreservation traditionally relies on conventional freezing, employing cryoprotective agents, and slow cooling to sub-zero centigrade temperatures; but it is plagued by the formation of ice crystals and cell damage upon thawing.
View Article and Find Full Text PDFPotential Migration and Health Risks of Heavy Metals and Metalloids in Take-Out Food Containers in South Korea.
Int J Environ Res Public Health
January 2024
Health and Environment Research Institute of Gwangju, 584, Mujin-daero, Seo-gu, Gwangju 61954, Republic of Korea.
The consumption of take-out food has increased worldwide; consequently, people are increasingly being exposed to chemicals from food containers. However, research on the migration of metals from containers to food is limited, and therefore, information required to determine the health risks is lacking. Herein, the amount of transfer of nine metals and metalloids (Pb, Sb, Cd, Ge, Co, Mn, Sn, As, and Hg) from food containers to food in South Korea was assessed from take-out food containers classified into paper and plastic container groups.
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