keyword
https://read.qxmd.com/read/38521258/uranium-accumulation-in-environmentally-relevant-microplastics-and-agricultural-soil-at-acidic-and-circumneutral-ph
#21
JOURNAL ARTICLE
Casey Miller, Andrew Neidhart, Kendra Hess, Abdul-Mehdi S Ali, Angelica Benavidez, Michael Spilde, Eric Peterson, Adrian Brearley, Xuewen Wang, B Dulani Dhanapala, José M Cerrato, Jorge Gonzalez-Estrella, Eliane El Hayek
The co-occurrence of microplastics (MPs) with potentially toxic metals in the environment stresses the need to address their physicochemical interactions and the potential ecological and human health implications. Here, we investigated the reaction of aqueous U with agricultural soil and high-density polyethylene (HDPE) through the integration of batch experiments, microscopy, and spectroscopy. The aqueous initial concentration of U (100 μM) decreased between 98.6 and 99.2 % at pH 5 and between 86...
March 21, 2024: Science of the Total Environment
https://read.qxmd.com/read/38521252/towards-zero-excess-sludge-discharge-with-built-in-ozonation-for-wastewater-biological-treatment
#22
JOURNAL ARTICLE
Chunli Wan, Shiyun Huang, Min Li, Lei Zhang, Yue Yuan, Xiaomeng Zhao, Changyong Wu
In this study, a biological treatment process, which used a built-in ozonation bypass to achieve sludge reduction, was built to treat the industrial antifreeze production wastewater (mainly composed of ethylene glycol). The results indicated there is a positive correlation between ozone dosage and sludge reduction. At the laboratory level, the MLSS in the system can be stably controlled at around 3400 mg MLSS L-1 under the dosage of 0.18 g O3 g-1 MLSS. Ozonation can increase the compactness of sludge flocs (fractal dimension increased from 1...
March 21, 2024: Science of the Total Environment
https://read.qxmd.com/read/38520929/construction-of-diverse-hollow-mfi-zeolites-through-regulating-the-micropore-filling-agents
#23
JOURNAL ARTICLE
Junjie Li, Wen Liu, Xinbao Zhang, Fucun Chen, Sujuan Xie, Longya Xu, Xiujie Li, Xiangxue Zhu
Constructing hollow structure into microporous zeolites can improve the accessibility of acid sites located at the inner part and the diffusion property. Hence, the development of an efficient synthesis strategy to acquire zeolites with tunable hollow structures and acidity has attracted much attention. In this work, an innovative tandem synthesis route was proposed to prepare MFI zeolites with diverse hollow structure while maintaining solid yields exceeding 90 %. The substitution of ethanol molecules, which previously occupied the micropores, with tetrapropylammonium cations was proved to be the key factor to construct hollow structure...
March 13, 2024: Journal of Colloid and Interface Science
https://read.qxmd.com/read/38520471/constrained-and-open-mesoporosity-in-polypropylene-cracking-insight-from-spectroscopic-investigations-of-acidity-diffusion-and-activity
#24
JOURNAL ARTICLE
Karolina A Tarach, Gabriela Jajko, Miguel Palomino, Fernando Rey, Kinga Góra-Marek
The outcome of the demetalation process of zeolites depends on applied treatment conditions and can lead to the formation of either open or constrained mesopores. The quaternary ammonium cations as pore-directing agents during desilication are responsible for developing constrained mesoporosity with bottleneck entrances. However, higher mesopore surface area and higher accessibility of acid sites are often found for the hierarchical zeolites with constrained mesopores. This is followed by better catalytic activity in the cracking of vacuum gas oil and polymers...
March 23, 2024: Langmuir: the ACS Journal of Surfaces and Colloids
https://read.qxmd.com/read/38520078/isolation-and-characterization-of-reference-standard-candidates-for-cocaine-and-benzoylecgonine-obtained-from-illicit-substances-seized
#25
JOURNAL ARTICLE
Clebson de Jesus Macrino, Nayara A Dos Santos, Nathália Dos S Conceição, Clara S D Baptista, Alvaro Cunha Neto, Wanderson Romão
The area of forensic chemistry has been growing and developing as a line of research due to the high demands of public safety that require increasingly reliable results due to their importance in criminalistics. In this way, the development of new technologies that help this area, whether in the identification and quantification of drugs or the fight against fraud, becomes promising. In this context, the present work explored the production of reference standards from the purification of cocaine/crack samples seized by the Civil Police of the State of Espírito Santo...
March 22, 2024: Journal of Forensic Sciences
https://read.qxmd.com/read/38519531/experimental-analysis-and-model-prediction-of-elbow-pipe-s-erosion-in-water-cooled-radiator
#26
JOURNAL ARTICLE
Yongfei Wang, Xiaofei Li, Tong Wang, Jian Zhang, Longcheng Li, Yu Zhang
The radiator with heat transfer capability is able to guarantee the stable operation of hydro generator set, while the long-term and continuous scouring on radiator pipes by cooling medium will lead to thinning or even perforation of pipe wall, which triggers wall failure. This paper analyzes and predicts the failure mechanism of radiator's pipe wall, and investigates the effects of water flow velocity, sand content and sand particle size on erosion damage of radiator pipe by establishing a test bench for pipe erosion...
March 22, 2024: Scientific Reports
https://read.qxmd.com/read/38518423/interface-engineering-of-three-phase-nickel-cobalt-sulfide-nickel-phosphide-iron-phosphide-heterostructure-for-enhanced-water-splitting-and-urea-electrolysis
#27
JOURNAL ARTICLE
Longqian Wang, Pan Wang, Xin Xue, Dan Wang, Huishan Shang, Yafei Zhao, Bing Zhang
Rational designing efficient transition metal-based multifunctional electrocatalysts is highly desirable for improving the efficiency of hydrogen production from water cracking. Herein, a self-supported three-phase heterostructure electrocatalyst of nickel-cobalt sulfide/nickel phosphide/iron phosphide (CoNi5 S8 -Ni2 P-FeP2 ) was prepared by a two-step gas-phase sulfurization/phosphorization strategy. The heterostructure in CoNi5 S8 -Ni2 P-FeP2 provides a favorable interfacial environment for electron transfer and synergistic interaction of multiphase active components, while the introduced electronegative P/S not only serves as a carrier for proton capture in the hydrogen evolution reaction (HER) process but also promotes the metal-electron outflow, which in turn accelerates the generation of high-valent Ni3+ species to enhance the catalytic activity of oxygen evolution reaction (OER) and urea oxidation reaction (UOR)...
March 19, 2024: Journal of Colloid and Interface Science
https://read.qxmd.com/read/38517822/survivability-of-endodontically-treated-cracked-tooth-a-systematic-review
#28
REVIEW
Vinod Babu Mathew, Shaheen Shamsuddin, Akshayraj Langaliya, Priyanka Tikaram Rathod, Bharti Gupta, Vincenzo Ronsivalle, Marco Cicciù, Giuseppe Minervini
BACKGROUND: Literature evidence describes various treatment protocols that have been employed for the effectiveness in improving survival and addressing associated symptoms of cracked teeth. OBJECTIVE: This systematic review investigates the survivability of endodontically treated cracked teeth and associated assessments, focusing on various treatment protocols. METHODS: The PRISMA guidelines were utilised for guiding the article selection framework of this review...
February 29, 2024: Technology and Health Care: Official Journal of the European Society for Engineering and Medicine
https://read.qxmd.com/read/38517240/effects-of-instant-controlled-pressure-drop-treatment-combined-with-refractance-windows-drying-on-infusion-quality-of-made-green-tea
#29
JOURNAL ARTICLE
Tridisha Bordoloi, Manuj Kumar Hazarika
BACKGROUND: The study aimed to determine the effects of instant controlled decompression of steam pressure, termed as ICPD (Instant Controlled Pressure Drop) on fresh tea leaves, when combined with refractance window drying (RWD) of rolled green teas during green tea manufacturing. The ICPD steam treatment pressure (TP; 0.1-0.3 MPa), treatment time (TT; 10-20 s) and refractance window drying temperature (RWDT; 70-90°C) were used as the processing parameters for manufacturing of green tea...
March 22, 2024: Journal of the Science of Food and Agriculture
https://read.qxmd.com/read/38516959/organic-hydrochloride-modified-zno-electron-transport-layer-for-efficient-defect-passivation-and-stress-release-in-rigid-and-flexible-all-inorganic-perovskite-solar-cells
#30
JOURNAL ARTICLE
Wenjie Xu, Xiaoxuan Tang, Jie Xiong, Weiwei Xu, Heng Zhou, Chaohan Yu, Yanhui Lou, Lai Feng
All inorganic CsPbI2 Br perovskite (AIP) has attracted great attention due to its excellent resistance against thermal stress as well as the remarkable capability to deliver high-voltage output. However, CsPbI2 Br perovskite solar cells (PeSCs) still encounter critical challenges in attaining both high efficiency and mechanical stability for commercial applications. In this work, formamidine disulfide dihydrochloride (FADD) modified ZnO electron transport layer (ETL) has been developed for fabricating inverted devices on either rigid or flexible substrate...
March 22, 2024: Small
https://read.qxmd.com/read/38514917/diagnosis-by-combination-of-endoscopic-findings-helps-differentiate-non-helicobacter-pylori-helicobacter-infected-gastritis-from-helicobacter-pylori-infected-gastritis
#31
JOURNAL ARTICLE
Takuma Okamura, Yugo Iwaya, Tadanobu Nagaya, Kazuki Horiuchi, Tatsuya Negishi, Hiroyoshi Ota, Takeji Umemura
BACKGROUND: The characteristic endoscopic findings of non-Helicobacter pylori Helicobacter (NHPH) gastritis, including white marbled appearance and crack-like mucosa, have been reported. However, these findings can also manifest in H. pylori (HP)-infected gastritis. This study compared NHPH gastritis and mild atrophic HP gastritis to identify features that may enhance NHPH diagnosis. MATERIALS AND METHODS: A total of 2087 patients underwent upper gastrointestinal endoscopy and were histologically evaluated by multiple gastric mucosal biopsies according to the updated Sydney System (USS) at Shinshu University Hospital between 2005 and 2023...
2024: Helicobacter
https://read.qxmd.com/read/38513438/study-of-thermal-effects-induced-by-the-high-frequency-probing-laser-in-nonlinear-opto-acoustic-frequency-mixing-technique
#32
JOURNAL ARTICLE
Ling Yuan, Chen-Yin Ni, Yi-Fei Zhang, Hong-Chao Zhang, Zhong-Hua Shen
Photo-thermal modulation-based nonlinear opto-acoustic frequency-mixing technique is an effective method for detecting micro-cracks. When using this technique for micro-crack detection, the selection of laser source parameters is particularly crucial. Compared to traditional piezo-transducer-based mixing techniques, the characteristic of using a laser as the detection source is the presence of thermal effects. The thermal effect caused by laser irradiation on the sample surface can not only generate acoustic waves but also affect the crack state, thus influencing nonlinear signals...
March 11, 2024: Ultrasonics
https://read.qxmd.com/read/38513312/mechanical-properties-of-clot-made-from-human-and-bovine-whole-blood-differ-significantly
#33
JOURNAL ARTICLE
Gabriella P Sugerman, Grace N Bechtel, Zuzanna Malinowska, Sapun H Parekh, Manuel K Rausch
Thromboembolism - that is, clot formation and the subsequent fragmentation of clot - is a leading cause of death worldwide. Clots' mechanical properties are critical determinants of both the embolization process and the pathophysiological consequences thereof. Thus, understanding and quantifying the mechanical properties of clots is important to our ability to treat and prevent thromboembolic disease. However, assessing these properties from in vivo clots is experimentally challenging. Therefore, we and others have turned to studying in vitro clot mimics instead...
March 15, 2024: Journal of the Mechanical Behavior of Biomedical Materials
https://read.qxmd.com/read/38512952/study-on-crack-resistance-of-self-healing-microcapsules-in-asphalt-pavement-by-multi-scale-method
#34
JOURNAL ARTICLE
Hongliang Zhang, Weiwen Quan, Ruixiang Wang
Self-healing microcapsules in the asphalt pavement must be kept intact under vehicle load to ensure there is enough rejuvenator in capsules when cracks appear in asphalt pavement. In this paper, the crack resistance of self-healing microcapsules in asphalt pavement was evaluated. Firstly, an expanding multi-scale analysis was conducted based on proposed mesoscopic mechanical models with the aim to determine the mechanical parameters for the following contracting multi-scale analysis. Secondly, the periodic boundary condition was introduced for the contracting multi-scale analysis and the stress field of the capsule wall was obtained...
2024: PloS One
https://read.qxmd.com/read/38511975/associations-between-traumatic-life-events-and-substance-use-among-black-men-who-are-incarcerated
#35
JOURNAL ARTICLE
Jasmine K Jester, Brittany Miller-Roenigk, Paris Wheeler, Danelle Stevens-Watkins
The current study examined associations between traumatic life events, current and lifetime importance of mental health and substance use treatment, and crack cocaine use among 201 Black men who were incarcerated and nearing community reentry. Results indicated age, sexual trauma and lifetime importance of drug treatment were significantly associated with an increased likelihood of crack cocaine use. Substance abuse treatment in correctional settings should consider culturally tailored assessment and treatment for history of unaddressed sexual trauma among Black men who are incarcerated and use crack cocaine...
March 21, 2024: Journal of Ethnicity in Substance Abuse
https://read.qxmd.com/read/38511485/shear-induced-fabrication-of-cellulose-nanofibril-liquid-metal-nanocomposite-films-for-flexible-electromagnetic-interference-shielding-and-thermal-management
#36
JOURNAL ARTICLE
Ning Ren, Yusen Ai, Ning Yue, Mei Cui, Renliang Huang, Wei Qi, Rongxin Su
To address electromagnetic interference (EMI) pollution in modern society, the development of ultrathin, high-performance, and highly stable EMI shielding materials is highly desired. Liquid metal (LM) based conductive materials have received enormous amounts of attention. However, the processing approach of LM/polymer composites represents great challenges due to the high surface tension and cohesive energy of LMs. In this study, we develop a universal one-step fabrication strategy to directly process composites containing LMs and cellulose nanofibrils (CNFs) and successfully fabricate the ultrathin, flexible, and stable EMI shielding films with an average specific EMI shielding efficiency (EMI SE) value of 429 dB/mm and small thickness of only 70 μm in the wide frequency range of 8...
March 21, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38509763/the-overlooked-potential-of-sulfated-zirconia-reexamining-solid-superacidity-toward-the-controlled-depolymerization-of-polyolefins
#37
REVIEW
Scott R Cleary, Anne K Starace, Caleb C Curran-Velasco, Daniel A Ruddy, C Michael McGuirk
Closed-loop recycling via an efficient chemical process can help alleviate the global plastic waste crisis. However, conventional depolymerization methods for polyolefins, which compose more than 50% of plastics, demand high temperatures and pressures, employ precious noble metals, and/or yield complex mixtures of products limited to single-use fuels or oils. Superacidic forms of sulfated zirconia (SZrO) with Hammet Acidity Functions ( H 0 ) ≤ - 12 (i.e., stronger than 100% H2 SO4 ) are industrially deployed heterogeneous catalysts capable of activating hydrocarbons under mild conditions and are shown to decompose polyolefins at temperatures near 200 °C and ambient pressure...
March 20, 2024: Langmuir: the ACS Journal of Surfaces and Colloids
https://read.qxmd.com/read/38509345/mechanical-and-self-healing-properties-of-cement-paste-containing-incinerated-sugarcane-filter-cake-and-lysinibacillus-sp-wh-bacteria
#38
JOURNAL ARTICLE
Zerlinda Mara Ditta, Peerawat Laohana, Nantawat Tanapongpisit, Wittawat Saenrang, Sophon Boonlue, Vanchai Sata, Mohammed Baalousha, Prinya Chindaprasirt, Jindarat Ekprasert
Cement is the most widely used construction material due to its strength and affordability, but its production is energy intensive. Thus, the need to replace cement with widely available waste material such as incinerated black filter cake (IBFC) in order to reduce energy consumption and the associated CO2 emissions. However, because IBFC is a newly discovered cement replacement material, several parameters affecting the mechanical properties of IBFC-cement composite have not been thoroughly investigated yet...
March 20, 2024: Scientific Reports
https://read.qxmd.com/read/38508519/central-bouquet-hemorrhages-in-pathologic-myopia-clinical-characteristics-and-prognostic-relevance
#39
JOURNAL ARTICLE
Andrea Ferri, Prithvi Ramtohul, Alessandro Russo, Ugo Introini, K Bailey Freund, Francesco Bandello, Maria Vittoria Cicinelli
PURPOSE: To compare the clinical implications of central bouquet hemorrhages (CBH) to primarily subretinal hemorrhages, both occurring in the setting of pathologic myopia with lacquer crack formation. DESIGN AND SETTING: Multi-center retrospective cohort study PARTICIPANTS: 25 eyes (11 primarily subretinal hemorrhages, 14 CBH) were monitored over a median of 35 months (interquartile range [IQR] 9.50-54). MAIN OUTCOMES MEASURES: Comprehensive ophthalmological examinations and optical coherence tomography (OCT) were reviewed...
March 18, 2024: Ophthalmology Retina
https://read.qxmd.com/read/38506670/mechanical-and-architectural-changes-in-animal-bone-following-fast-neutron-irradiation
#40
JOURNAL ARTICLE
Eduardo Galiano, Jinlu Liu, Beide Ren, Penghao Xu
Damage to healthy bone following exposure to ionizing radiation has been well documented for at least seven decades. Among the reported effects are a transient increase in stiffness and a reduction in breaking strength. These changes have been linked to a decrease in osteoblast proliferation and differentiation, inducing cell cycle arrest, reducing collagen production, and increasing sensitivity to apoptotic agents. In this work, we analyzed some mechanical and structural changes in compact costal bovine bone (Hereford breed, n = 9) subjected to escalating doses of fast neutrons from a 7Li(p,n)7Be reaction...
March 18, 2024: Health Physics
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