Article
Engineering, Chemical
Reyhaneh Eizi, Tahereh Rohani Bastami, Vahid Mahmoudi, Ali Ayati, Hesamaddyn Babaei
Summary: In this study, novel CuFe-LDH/g-C3N4 (CFL/CN) nanocomposites were prepared using an ultrasound-assisted method. The results showed that the sono-synthesis method improved the adsorption performance and stability of the nanomaterials, making them suitable for removing organic dyes from aqueous effluents.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2023)
Article
Chemistry, Medicinal
Andreas Lehmann, Katharina Krollik, Kristian Beran, Carina Hirtreiter, Holger Kubas, Christian Wagner
Summary: In vitro precipitation assays are commonly used in drug and formulation development. However, the current methods for quantifying dissolved drugs are time-consuming and require complex sample preparation. This study developed a robust and easily implementable in-line UV spectrophotometric method to accurately reflect the precipitation profile in in vitro transfer assays. The method accounts for the changes in media composition over time due to dilution. The developed method provides a fast, accurate, and specific approach for measuring dissolved drug concentrations in in vitro transfer experiments.
JOURNAL OF PHARMACEUTICAL SCIENCES
(2022)
Article
Meteorology & Atmospheric Sciences
Vasilii V. Petrenko, Andrew M. Smith, Edward M. Crosier, Roxana Kazemi, Philip Place, Aidan Colton, Bin Yang, Quan Hua, Lee T. Murray
Summary: The study presents a new method to measure atmospheric hydroxyl radical concentration using carbon-14-containing carbon monoxide as a tracer, reducing sample volume requirements while maintaining measurement precision. The method includes accurate characterization of procedural blank and was used to make measurements at the NOAA Mauna Loa Observatory. The results show a seasonal cycle and agreement with prior data from a different site.
ATMOSPHERIC MEASUREMENT TECHNIQUES
(2021)
Article
Biotechnology & Applied Microbiology
Julie Billy, Jeremy Pruvost, Olivier Lepine, Delphine Drouin, Olivier Goncalves
Summary: This study developed a reliable method to quantify C-phycocyanin, specifically for Aphanizomenon flos-aquae (AFA) samples. The commonly used spectrophotometric method tends to overestimate the amount of C-phycocyanin, so the aim was to adapt the method for AFA and account for variation in C-phycocyanin between different cyanobacteria species. High performance liquid chromatography (HPLC) was used as a reference method, and a new set of spectrophotometric quantification equations was obtained. This method has the potential to improve quantification methods for other types of phycocyanin, cyanobacteria, and compounds currently quantified by spectrophotometry.
JOURNAL OF APPLIED PHYCOLOGY
(2023)
Article
Pharmacology & Pharmacy
Mei Wu, Mengyu Lin, Pei Li, Xiang Huang, Ke Tian, Cai Li
Summary: This study developed hydrogels of carboxymethyl chitosan (CCS) cross-linked with sodium alginate (SA), loaded with lidocaine (LID) for controlled drug release. The mechanical characteristics of the CCS-SA hydrogels were examined and confirmed a porous structure. Encapsulation and release of LID in the hydrogels showed satisfactory results. The hydrogels exhibited a local anesthetic effect and reduced toxicity compared to free LID drug.
JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
(2023)
Article
Astronomy & Astrophysics
Tiejun Chang, Xiaoxiong Xiong, Ashish Shrestha, Carlos Perez Diaz
Summary: This study discusses the calibration assessment of satellite sensors using selected Earth targets. Different types of scenes, such as Dome-C, ocean, desert, and deep convective clouds, are used for calibration assessments based on temperature variations. A normalization method is applied to enhance the accuracy of the calibration assessment.
EARTH AND SPACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Saeed Zaman, Iltaf Khan, Feng-Ming Zhang, Shoaib Khan, Aftab Khan, Sohail Khan, Samreen Sadiq, Madiha Rafiq, Summaira Saghir, Xiao-Jun Sun
Summary: In this study, mediator-free BiFeO3 hollow spheres/porous g-C3N4 Z-scheme photocatalysts were successfully prepared and used for CO2 conversion and Alizarin Red S degradation. The porous g-C3N4 and hollow spheres greatly enhanced the surface area, light absorption capacity, and photocatalytic activities of g-C3N4 and BiFeO3. The coupling of BiFeO3 hollow spheres with porous g-C3N4 improved charge separation and electron transfer, leading to a 3.5-fold enhancement in the activities for Alizarin Red S degradation and CO2 conversion under visible light irradiation. This work provides a new approach to synthesize BiFeO3 hollow spheres/porous g-C3N4 Z-scheme materials as efficient photocatalysts for organic contaminant decontamination and CO2 conversion.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2023)
Article
Engineering, Civil
Chien-Chou Chen, Wen-Hwa Wu, Yan-Ting Liu, Gwolong Lai
Summary: The tension estimation method based on effective vibration lengths requires at least one sensor near the high end of a stay cable or suspender of an arch bridge for good accuracy. By fitting partial mode shapes through local vibration measurements, accurate cable tension estimation can be achieved, demonstrating excellent accuracy in experiments.
ENGINEERING STRUCTURES
(2022)
Article
Chemistry, Analytical
Pengli Jian, Turghun Muhammad, Aixia Wei, Beibei Wu, Tiantian Zhou
Summary: A method for detecting illegal local anesthetics in cosmetics was established using a combination of molecularly imprinted polymers and micro-solid-phase extraction devices. The proposed method showed good selectivity and reproducibility and successfully detected local anesthetics in cosmetic samples.
JOURNAL OF SEPARATION SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Braden Czapla, Leonard Hanssen
Summary: The algorithm discussed in the study combines Kramers-Kronig analysis with Fresnel's equations inversion to accurately extract the complex refractive index of materials from broadband reflectance and transmittance measurements, even for weakly absorbing materials. The validation of the algorithm on polydimethylsiloxane and comparison against literature showcases its effectiveness. Furthermore, the study highlights the importance of broadband optical properties for passive radiative cooling and provides details on the uncertainty analysis of the algorithm.
JOURNAL OF PHOTONICS FOR ENERGY
(2021)
Article
Construction & Building Technology
Chien-Chou Chen, Wen-Hwa Wu, Yi-Pei Ko, Gwolong Lai
Summary: This research systematically investigates the appropriate covering ranges of measurements for different cables using numerical analyses and field validations. The results show that the covering range of local measurements can be reduced with the increase of the cable slenderness parameter, which helps alleviate the expense and hard work of sensor installation.
STRUCTURAL CONTROL & HEALTH MONITORING
(2023)
Article
Chemistry, Applied
Xuening Fei, Shuai Li, Bin Wu, Fuxiong Ren, Sen Zhu, Linyun Cao, Lijuan Liu
Summary: A composite pigment with a core-shell structure was prepared using a solid-state ball milling method, where sepiolite served as the inorganic core. The study found that under specific conditions, sepiolite and P. R. 177 successfully formed a core-shell structure, resulting in a composite pigment with improved optical properties and coloring force. Moreover, the ball milling method used for preparing the composite pigment could convert mechanical energy into chemical bonding energy, as confirmed by performance tests showing better water dispersibility and light fastness.
Article
Environmental Sciences
Guaciara M. Santos, Rafael Perpetuo Albuquerque, Claudia Franca Barros, Santiago Ancapichun, Rose Oelkers, Laia Andreu-Hayles, Sergio Miana de Faria, Ricardo De Pol-Holz, Arno Fritz das Neves Brandes
Summary: This study presents a precisely measured C-14 dating sequence from 1938 to 2007 in tree rings of Hymenolobium petraeum, a tree species from the Central Brazilian Amazon. The results show that atmospheric C-14 records have been limited along tropical latitudes. The study also finds that the inter-hemispheric air-mass transport of excess-C-14 injected into the stratosphere during atmospheric nuclear tests is relatively uniform across distinct longitudinal regions. Additionally, the research reveals the significant influence of mining operations and shipping traffic on inland waterways in Porto Trombetas.
ENVIRONMENTAL RESEARCH
(2022)
Article
Meteorology & Atmospheric Sciences
Amelie Kirchgaessner, John C. King, Philip S. Anderson
Summary: Fohn winds, warm and strong downslope winds on the lee side of mountains, have been shown to significantly warm ice shelves on the eastern side of the Antarctic Peninsula, potentially contributing to ice shelf collapse. Research reveals that Fohn conditions can raise air temperatures above freezing even in winter, triggering melting/sublimation processes.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2021)
Article
Chemistry, Inorganic & Nuclear
Jozsef Gabor Szucs, Laszlo Balazs
Summary: Carbon oxygen ratio (C/O) logging is crucial for accurately determining hydrocarbon saturation in reservoirs, regardless of the formation water's salinity. Monte Carlo simulations allow for the generation of gamma spectra under various rock physics conditions and borehole environments, allowing for the determination of C/O through the processing of simulated gamma spectra. The simulation results can be used to derive interpretation diagrams and investigate side effects.
APPLIED RADIATION AND ISOTOPES
(2022)
