keyword
https://read.qxmd.com/read/38786836/investigations-of-in-2-o-3-added-sic-semiconductive-thin-films-and-manufacture-of-a-heterojunction-diode
#21
JOURNAL ARTICLE
Chia-Te Liao, Chia-Yang Kao, Zhi-Ting Su, Yu-Shan Lin, Yi-Wen Wang, Cheng-Fu Yang
This study involved direct doping of In2 O3 into silicon carbide (SiC) powder, resulting in 8.0 at% In-doped SiC powder. Subsequently, heating at 500 °C was performed to form a target, followed by the utilization of electron beam (e-beam) technology to deposit the In-doped SiC thin films with the thickness of approximately 189.8 nm. The first breakthrough of this research was the successful deposition of using e-beam technology. The second breakthrough involved utilizing various tools to analyze the physical and electrical properties of In-doped SiC thin films...
May 19, 2024: Nanomaterials
https://read.qxmd.com/read/38786818/effect-of-stabilized-nzvi-nanoparticles-on-the-reduction-and-immobilization-of-cr-in-contaminated-soil-column-experiment-and-transport-modeling
#22
JOURNAL ARTICLE
Hesham M Ibrahim, Abdallah A Al-Issa, Abdullah S Al-Farraj, Abdulaziz G Alghamdi, Ali M Al-Turki
Batch and transport experiments were used to investigate the remediation of loamy sand soil contaminated with Cr(VI) using zero-valent iron nanoparticles (nZVI) stabilized by carboxymethylcellulose (CMC-nZVI). The effect of pH, ionic strength (IS), and flow rate on the removal efficiency of Cr(VI) were investigated under equilibrium (uniform transport) and non-equilibrium (two-site sorption) transport using the Hydrus-1D model. The overall removal efficiency ranged from 70 to over 90% based on the chemical characteristics of the CMC-nZVI suspension and the transport conditions...
May 15, 2024: Nanomaterials
https://read.qxmd.com/read/38786483/recent-advances-in-biomimetics-for-the-development-of-bio-inspired-prosthetic-limbs
#23
REVIEW
Pavitra Varaganti, Soonmin Seo
Recent advancements in biomimetics have spurred significant innovations in prosthetic limb development by leveraging the intricate designs and mechanisms found in nature. Biomimetics, also known as "nature-inspired engineering", involves studying and emulating biological systems to address complex human challenges. This comprehensive review provides insights into the latest trends in biomimetic prosthetics, focusing on leveraging knowledge from natural biomechanics, sensory feedback mechanisms, and control systems to closely mimic biological appendages...
April 30, 2024: Biomimetics
https://read.qxmd.com/read/38786362/the-role-of-cis-zeatin-in-enhancing-high-temperature-resistance-and-fucoxanthin-biosynthesis-in-phaeodactylum-tricornutum
#24
JOURNAL ARTICLE
Sizhe Fan, Yixuan Li, Qi Wang, Mengjie Jin, Mange Yu, Hejing Zhao, Chengxu Zhou, Jilin Xu, Bing Li, Xiaohui Li
Phaeodactylum tricornutum a prominent source of industrial fucoxanthin production, faces challenges in its application due to its tolerance to high-temperature environments. This study investigates the physiological responses of P. tricornutum to high-temperature stress and its impact on fucoxanthin content, with a specific focus on the role of cis -zeatin. The results reveal that high-temperature stress inhibits P. tricornutum 's growth and photosynthetic activity, leading to a decrease in fucoxanthin content...
May 24, 2024: Applied and Environmental Microbiology
https://read.qxmd.com/read/38786221/study-on-a-strong-polymer-gel-by-the-addition-of-micron-graphite-oxide-powder-and-its-plugging-of-fracture
#25
JOURNAL ARTICLE
Bin Shi, Guangming Zhang, Lei Zhang, Chengjun Wang, Zhonghui Li, Fangping Chen
It is difficult to plug the fracture water channeling of a fractured low-permeability reservoir during water flooding by using the conventional acrylamide polymer gel due to its weak mechanical properties. For this problem, micron graphite powder is added to enhance the comprehensive properties of the acrylamide polymer gel, which can improve the plugging effect of fracture water channeling. The chemical principle of this process is that the hydroxyl and carboxyl groups of the layered micron graphite powder can undergo physicochemical interactions with the amide groups of the polyacrylamide molecule chain...
April 30, 2024: Gels
https://read.qxmd.com/read/38786212/biomedical-trends-in-stimuli-responsive-hydrogels-with-emphasis-on-chitosan-based-formulations
#26
REVIEW
Weronika Kruczkowska, Julia Gałęziewska, Katarzyna Grabowska, Gabriela Liese, Paulina Buczek, Karol Kamil Kłosiński, Mateusz Kciuk, Zbigniew Pasieka, Żaneta Kałuzińska-Kołat, Damian Kołat
Biomedicine is constantly evolving to ensure a significant and positive impact on healthcare, which has resulted in innovative and distinct requisites such as hydrogels. Chitosan-based formulations stand out for their versatile utilization in drug encapsulation, transport, and controlled release, which is complemented by their biocompatibility, biodegradability, and non-immunogenic nature. Stimuli-responsive hydrogels, also known as smart hydrogels, have strictly regulated release patterns since they respond and adapt based on various external stimuli...
April 25, 2024: Gels
https://read.qxmd.com/read/38786116/cerebral-infectious-opportunistic-lesions-in-a-patient-with-acute-myeloid-leukaemia-the-challenge-of-diagnosis-and-clinical-management
#27
Gabriele Cavazza, Cristina Motto, Caroline Regna-Gladin, Giovanna Travi, Elisa Di Gennaro, Francesco Peracchi, Bianca Monti, Nicolò Corti, Rosa Greco, Periana Minga, Marta Riva, Sara Rimoldi, Marta Vecchi, Carlotta Rogati, Davide Motta, Annamaria Pazzi, Chiara Vismara, Laura Bandiera, Fulvio Crippa, Valentina Mancini, Maria Sessa, Chiara Oltolini, Roberto Cairoli, Massimo Puoti
Central nervous system (CNS) lesions, especially invasive fungal diseases (IFDs), in immunocompromised patients pose a great challenge in diagnosis and treatment. We report the case of a 48-year-old man with acute myeloid leukaemia and probable pulmonary aspergillosis, who developed hyposthenia of the left upper limb, after achieving leukaemia remission and while on voriconazole. Magnetic resonance imaging (MRI) showed oedematous CNS lesions with a haemorrhagic component in the right hemisphere with lepto-meningitis...
April 24, 2024: Antibiotics
https://read.qxmd.com/read/38786042/the-imperative-for-innovative-enteric-nervous-system-intestinal-organoid-co-culture-models-transforming-gi-disease-modeling-and-treatment
#28
REVIEW
Cristina Llorente
This review addresses the need for innovative co-culture systems integrating the enteric nervous system (ENS) with intestinal organoids. The breakthroughs achieved through these techniques will pave the way for a transformative era in gastrointestinal (GI) disease modeling and treatment strategies. This review serves as an introduction to the companion protocol paper featured in this journal. The protocol outlines the isolation and co-culture of myenteric and submucosal neurons with small intestinal organoids...
May 10, 2024: Cells
https://read.qxmd.com/read/38786032/non-tumor-cells-within-the-tumor-microenvironment-the-eminence-grise-of-the-glioblastoma-pathogenesis-and-potential-targets-for-therapy
#29
REVIEW
Aleksandra S Bugakova, Daria A Chudakova, Maria S Myzina, Elvira P Yanysheva, Iuliia V Ozerskaya, Alesya V Soboleva, Vladimir P Baklaushev, Gaukhar M Yusubalieva
Glioblastoma (GBM) is the most common malignancy of the central nervous system in adults. GBM has high levels of therapy failure and its prognosis is usually dismal. The phenotypic heterogeneity of the tumor cells, dynamic complexity of non-tumor cell populations within the GBM tumor microenvironment (TME), and their bi-directional cross-talk contribute to the challenges of current therapeutic approaches. Herein, we discuss the etiology of GBM, and describe several major types of non-tumor cells within its TME, their impact on GBM pathogenesis, and molecular mechanisms of such an impact...
May 9, 2024: Cells
https://read.qxmd.com/read/38785817/advances-in-drug-treatments-for-companion-animal-obesity
#30
REVIEW
Helena D Zomer, Paul S Cooke
Companion animal obesity has emerged as a significant veterinary health concern globally, with escalating rates posing challenges for preventive and therapeutic interventions. Obesity not only leads to immediate health problems but also contributes to various comorbidities affecting animal well-being and longevity, with consequent emotional and financial burdens on owners. While past treatment strategies have shown limited success, recent breakthroughs in human medicine present new opportunities for addressing this complex issue in companion animals...
May 11, 2024: Biology
https://read.qxmd.com/read/38785523/recent-therapeutic-gene-editing-applications-to-genetic-disorders
#31
REVIEW
Eric Deneault
Recent years have witnessed unprecedented progress in therapeutic gene editing, revolutionizing the approach to treating genetic disorders. In this comprehensive review, we discuss the progression of milestones leading to the emergence of the clustered regularly interspaced short palindromic repeats (CRISPR)-based technology as a powerful tool for precise and targeted modifications of the human genome. CRISPR-Cas9 nuclease, base editing, and prime editing have taken center stage, demonstrating remarkable precision and efficacy in targeted ex vivo and in vivo genomic modifications...
April 30, 2024: Current Issues in Molecular Biology
https://read.qxmd.com/read/38785375/enhancing-surgical-approach-breakthrough-markerless-surface-registration-with-augmented-reality-for-zygomatic-complex-fracture-surgeries
#32
JOURNAL ARTICLE
Tae Hyung Kim, Young Chul Kim, Woo Shik Jeong, Jong-Woo Choi
BACKGROUND: Innovative technologies with surgical navigation have been used for enhancing surgical accuracies for zygomaticomaxillary complex (ZMC) fractures and offers advantages in precision, accuracy, effectiveness, predictability, and symmetry improvement. Moreover, augmented reality (AR) navigation technology combines virtual reality, 3-dimensional (3D) reconstruction, and real-time interaction, making it ideal for bone tissue operations. Our study explored the usefulness and clinical efficacy of AR technology in intraoperative guidance for reducing ZMC fractures...
May 23, 2024: Annals of Plastic Surgery
https://read.qxmd.com/read/38785169/size-matters-in-conjugated-polymer-chirality-selective-swcnt-extraction
#33
JOURNAL ARTICLE
Andrzej Dzienia, Dominik Just, Tomasz Wasiak, Karolina Z Milowska, Anna Mielańczyk, Norman Labedzki, Sebastian Kruss, Dawid Janas
Carbon-based nanomaterials have catalyzed breakthroughs across various scientific and engineering disciplines. The key to unlocking a new generation of tailor-made nanomaterials based on single-walled carbon nanotubes (SWCNTs) lies in the precise sorting of raw material into individual chiralities, each possessing unique properties. This can be achieved using conjugated polymer extraction (CPE), but to a very limited extent since the process generates only a few chirality-enriched suspensions. Therefore, it is imperative to comprehend the mechanism of the wrapping of SWCNTs by polymers to unleash CPE's full potential...
May 24, 2024: Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
https://read.qxmd.com/read/38785114/high-entropy-cenbo-4-%C3%AE-based-ceramics-with-ultrahigh-comprehensive-thermosensitive-performances
#34
JOURNAL ARTICLE
Yafei Liu, Ruifeng Wu, Hao Sun, Aimin Chang, Jing Guo, Bo Zhang
Next-generation advanced high-temperature sensors rely heavily on negative temperature coefficient thermosensitive ceramics with low cost, small volume, high sensitivity, and fast response. However, thus far, the enormous challenge of achieving ultrahigh stability and accuracy has become a critical bottleneck restricting the development of thermosensitive ceramics in high-temperature sensor applications. Here, we propose a high-entropy strategy to design a "cation valence self-equilibrium" system in CeNbO4+δ -based ceramics introducing redox couple compensation and ultrahigh density dislocations to solve the problem of temperature-dependent oxygen nonstoichiometry that restricts the performances of high-temperature thermosensitive ceramics...
May 24, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38784756/an-adsorbate-biased-dynamic-3d-porous-framework-for-inverse-co-2-sieving-over-c-2-h-2
#35
JOURNAL ARTICLE
Nivedita Sikdar, Subhajit Laha, Rohan Jena, Anupam Dey, Faruk Ahamed Rahimi, Tapas Kumar Maji
Separating carbon dioxide (CO2 ) from acetylene (C2 H2 ) is one of the most critical and complex industrial separations due to similarities in physicochemical properties and molecular dimensions. Herein, we report a novel Ni-based three-dimensional framework {[Ni4 (μ3 -OH)2 (μ2 -OH2 )2 (1,4-ndc)3 ](3H2 O)} n (1,4-ndc = 1,4-naphthalenedicarboxylate) with a one-dimensional pore channel (3.05 × 3.57 Å2 ), that perfectly matches with the molecular size of CO2 and C2 H2 . The dehydrated framework shows structural transformation, decorated with an unsaturated Ni(ii) centre and pendant oxygen atoms...
May 22, 2024: Chemical Science
https://read.qxmd.com/read/38784442/pitfalls-in-valganciclovir-prophylaxis-dose-adjustment-based-on-renal-function-in-kidney-transplant-recipients
#36
JOURNAL ARTICLE
Nathalie Hammer, Linard Hoessly, Fadi Haidar, Cédric Hirzel, Sophie de Seigneux, Christian van Delden, Bruno Vogt, Daniel Sidler, Dionysios Neofytos
Valganciclovir (VGC) is administered as prophylaxis to kidney transplant recipients (KTR) CMV donor (D)+/recipient (R)- and CMV R+ after thymoglobulin-induction (R+/TG). Although VGC dose adjustments based on renal function are recommended, there is paucity of real-life data on VGC dosing and associations with clinical outcomes. This is a retrospective Swiss Transplant Cohort Study-embedded observational study, including all adult D+/R- and R+/TG KTR between 2010 and 2020, who received prophylaxis with VGC...
2024: Transplant International
https://read.qxmd.com/read/38783843/ionic-liquid-glycol-mixtures-for-direct-air-capture-of-co-2-decreased-viscosity-and-mitigation-of-evaporation-via-encapsulation
#37
JOURNAL ARTICLE
Cameron D L Taylor, Aidan Klemm, Luma Al-Mahbobi, B Jack Bradford, Burcu Gurkan, Emily B Pentzer
Herein we address the efficiency of the CO2 sorption of ionic liquids (IL) with hydrogen bond donors (e.g., glycols) added as viscosity modifiers and the impact of encapsulating them to limit sorbent evaporation under conditions for the direct air capture of CO2 . Ethylene glycol, propylene glycol, 1,3-propanediol, and diethylene glycol were added to three different ILs: 1-ethyl-3-methylimidazolium 2-cyanopyrrolide ([EMIM][2-CNpyr]), 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF4 ]), and 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4 ])...
May 20, 2024: ACS Sustainable Chemistry & Engineering
https://read.qxmd.com/read/38782659/brillouin-klein-space-and-half-turn-space-in-three-dimensional-acoustic-crystals
#38
JOURNAL ARTICLE
Zhenxiao Zhu, Linyun Yang, Jien Wu, Yan Meng, Xiang Xi, Bei Yan, Jingming Chen, Jiuyang Lu, Xueqin Huang, Weiyin Deng, Ce Shang, Perry Ping Shum, Yihao Yang, Hongsheng Chen, Kexin Xiang, Gui-Geng Liu, Zhengyou Liu, Zhen Gao
The Bloch band theory and Brillouin zone (BZ) that characterize wave-like behaviors in periodic mediums are two cornerstones of contemporary physics, ranging from condensed matter to topological physics. Recent theoretical breakthrough revealed that, under the projective symmetry algebra enforced by artificial gauge fields, the usual two-dimensional (2D) BZ (orientable Brillouin two-torus) can be fundamentally modified to a non-orientable Brillouin Klein bottle with radically distinct manifold topology. However, the physical consequence of artificial gauge fields on the more general three-dimensional (3D) BZ (orientable Brillouin three-torus) was so far missing...
May 11, 2024: Science Bulletin
https://read.qxmd.com/read/38782271/effect-of-particle-density-on-microplastics-transport-in-artificial-and-natural-porous-media
#39
JOURNAL ARTICLE
Wang Li, Giuseppe Brunetti, Anastasiia Bolshakova, Christine Stumpp
The occurrence and persistence of microplastics (MPs) in natural environments are of increasing concern. Along with this, the transport of MPs in sediments has been investigated mainly focusing on the effect of plastic size and shape, media size effect, and solution chemistry. Yet, the influence of particle density is only partially understood. Therefore, column experiments on the transport of variably buoyant MPs in saturated natural sediments and glass beads were conducted, and transport parameters were quantified using a two-site kinetic transport model with a depth-dependent blocking function (the amount of retained MPs does not decrease at a constant rate with increasing depth, the majority of MPs were retained near the column inlet)...
May 21, 2024: Science of the Total Environment
https://read.qxmd.com/read/38781962/sars-cov-2-breakthrough-infections-enhance-t%C3%A2-cell-response-magnitude-breadth-and-epitope-repertoire
#40
JOURNAL ARTICLE
Alison Tarke, Parham Ramezani-Rad, Tertuliano Alves Pereira Neto, Yeji Lee, Vanessa Silva-Moraes, Benjamin Goodwin, Nathaniel Bloom, Leila Siddiqui, Liliana Avalos, April Frazier, Zeli Zhang, Ricardo da Silva Antunes, Jennifer Dan, Shane Crotty, Alba Grifoni, Alessandro Sette
Little is known about the effect of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2 or SARS2) vaccine breakthrough infections (BTIs) on the magnitude and breadth of the T cell repertoire after exposure to different variants. We studied samples from individuals who experienced symptomatic BTIs during Delta or Omicron waves. In the pre-BTI samples, 30% of the donors exhibited substantial immune memory against non-S (spike) SARS2 antigens, consistent with previous undiagnosed asymptomatic SARS2 infections...
May 17, 2024: Cell reports medicine
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