bluuebunny/crossref_metadata_2025_split huggingface dataset:
19F MRI/CEUS Dual Imaging‐Guided Sonodynamic Therapy Enhances Immune Checkpoint Blockade in Triple‐Negative Breast Cancer
Authors: Chen Qiu , Xiao Hong , Hu Lijun , Huang Yongquan , Cao Zhong , Shuai Xintao , Su Zhongzhen 
Published: July 2024

AbstractTreatment of highly aggressive triple‐negative breast cancer (TNBC) in the clinic is challenging. Here, a liposome nanodrug (LP@PFH@HMME) integrating imaging agents and therapeutic agents for bimodal imaging‐guided sonodynamic therapy (SDT) is developed, which boosted immunogenicity to enable potent immunotherapy via immune checkpoint blockade (ICB) in TNBC. In the acidic tumor microenvironment (TME), LP@PFH@HMME undergoes “nano‐to‐micro” transformation due to a pH‐responsive lipid fusion, which makes droplets much more sensitive to ultrasound (US) in contrast‐enhanced ultrasound (CEUS) and SDT studies. The nanodrug demonstrates robust bimodal imaging ability through fluorine‐19 magnetic resonance imaging (19F MRI) and CEUS bimodal imaging, and it exhibits excellent solubility in aqueous solution with relatively high 19F content and desirable long transverse relaxation time (T2 = 1.072 s), making it suitable for high‐performance 19F MRI, in addition to effective accumulation of nanodrugs after tail vein injection. Thus, 19F MRI/CEUS dual imaging is achievable to show adequate time points for US irradiation of tumor sites to induce highly effective SDT, which produces abundant reactive oxygen species (ROS) triggering immunogenic cell death (ICD) to assist ICB‐based immunotherapy. The combination treatment design of sonodynamic therapy with immunotherapy effectively inhibited TNBC growth and recurrence, highlighting the promise of multifunctional nanodrugs in treating TNBC.
Modifying Parallel Excitations into One Framework for C(sp3)─H Bond Activation with Energy Combined More Than Two Photons
Authors: Shen Qingbo , Chen Jiali , Jing Xu , Duan Chunying 
Published: July 2024

AbstractNatural photosynthesis enzymes utilize energies of several photons for challenging oxidation of water, whereas artificial photo‐catalysis typically involves only single‐photon excitation. Herein, a multiphoton excitation strategy is reported that combines parallel photo‐excitations with a photoinduced electron transfer process for the activation of C(sp3)─H bonds, including methane. The metal–organic framework Fe3‐MOF is designed to consolidate 4,4′,4″‐nitrilotrisbenzoic units for the photoactivation of dioxygen and trinuclear iron clusters as the HAT precursor for photoactivating alkanes. Under visible light irradiation, the dyes and iron clusters absorbed parallel photons simultaneously to reach their excited states, respectively, generating 1O2 via energy transfer and chlorine radical via ligand‐to‐metal charge transfer. The further excitation of organic dyes leads to the reduction of 1O2 into O2•− through a photoinduced electron transfer, guaranteeing an extra multiphoton oxygen activation manner. The chlorine radical abstracts a hydrogen atom from alkanes, generating the carbon radical for further oxidation transformation. Accordingly, the total oxidation conversion of alkane utilizing three photoexcitation processes combines the energies of more than two photons. This new platform synergistically combines a consecutive excited photoredox organic dye and a HAT catalyst to combine the energies of more than two photons, providing a promising multiphoton catalysis strategy under energy saving, and high efficiency.
In Situ Encapsulation of SnS2/MoS2 Heterojunctions by Amphiphilic Graphene for High‐Energy and Ultrastable Lithium‐Ion Anodes
Authors: Yu Wenjun , Cui Baitao , Han Jianming , Zhu ShaSha , Xu Xinhao , Tan Junxin , Xu Qunjie , Min Yulin , Peng Yiting , Liu Haimei , Wang Yonggang 
Published: July 2024

AbstractLithium‐ion batteries with transition metal sulfides (TMSs) anodes promise a high capacity, abundant resources, and environmental friendliness, yet they suffer from fast degradation and low Coulombic efficiency. Here, a heterostructured bimetallic TMS anode is fabricated by in situ encapsulating SnS2/MoS2 nanoparticles within an amphiphilic hollow double‐graphene sheet (DGS). The hierarchically porous DGS consists of inner hydrophilic graphene and outer hydrophobic graphene, which can accelerate electron/ion migration and strongly hold the integrity of alloy microparticles during expansion and/or shrinkage. Moreover, catalytic Mo converted from lithiated MoS2 can promote the reaction kinetics and suppress heterointerface passivation by forming a building‐in‐electric field, thereby enhancing the reversible conversion of Sn to SnS2. Consequently, the SnS2/MoS2/DGS anode with high gravimetric and high volumetric capacities achieves 200 cycles with a high initial Coulombic efficiency of >90%, as well as excellent low‐temperature performance. When the commercial Li(Ni0.8Co0.1Mn0.1)O2 (NCM811) cathode is paired with the prelithiated SnS2/MoS2/DGS anode, the full cells deliver high gravimetric and volumetric energy densities of 577 Wh kg−1 and 853 Wh L−1, respectively. This work highlights the significance of integrating spatial confinement and atomic heterointerface engineering to solve the shortcomings of conversion‐/alloying typed TMS‐based anodes to construct outstanding high‐energy LIBs.
Anionic Surfactant‐Modulated Electrode–Electrolyte Interface Promotes H2O2 Electrosynthesis
Authors: Sun Wen , Tang Lei , Ge Wangxin , Fan Yu , Sheng Xuedi , Dong Lei , Zhang Wenfei , Jiang Hongliang , Li Chunzhong 
Published: July 2024

AbstractConventional strategies for highly selective and active hydrogen peroxide (H2O2) electrosynthesis primarily focus on catalyst design. Electrocatalytic reactions take place at the electrified electrode–electrolyte interface. Well‐designed electrolytes, when combined with commercial catalysts, can be directly applied to high‐efficiency H2O2 electrosynthesis. However, the role of electrolyte components is equally crucial but is significantly under‐researched. In this study, anionic surfactant n‐tetradecylphosphonic acid (TDPA) and its analogs are used as electrolyte additives to enhance the selectivity of the two‐electron oxygen reduction reaction. Mechanistic studies reveal that TDPA assembled over the electrode–electrolyte interface modulates the electrical double‐layer structure, which repels interfacial water and weakens the hydrogen‐bond network for proton transfer. Additionally, the hydrophilic phosphonate moiety affects the coordination of water molecules in the solvation shell, thereby directly influencing the proton‐coupled kinetics at the interface. The TDPA‐containing catalytic system achieves a Faradaic efficiency of H2O2 production close to 100% at a current density of 200 mA cm−2 using commercial carbon black catalysts. This research provides a simple strategy to enhance H2O2 electrosynthesis by adjusting the interfacial microenvironment through electrolyte design.
Using In situ Transmission Electron Microscopy to Study Strong Metal‐Support Interactions in Heterogeneous Catalysis
Authors: Dai Jie , Sun Yifei , Liu Zhewei , Zhang Yiyuan , Duan Sibin , Wang Rongming 
Published: July 2024

AbstractPrecisely controlling the microstructure of supported metal catalysts and regulating metal‐support interactions at the atomic level are essential for achieving highly efficient heterogeneous catalysts. Strong metal‐support interaction (SMSI) not only stabilizes metal nanoparticles and improves their resistance to sintering but also modulates the electrical interaction between metal species and the support, optimizing the catalytic activity and selectivity. Therefore, understating the formation mechanism of SMSI and its dynamic evolution during the chemical reaction at the atomic scale is crucial for guiding the structural design and performance optimization of supported metal catalysts. Recent advancements in in situ transmission electron microscopy (TEM) have shed new light on these complex phenomena, providing deeper insights into the SMSI dynamics. Here, the research progress of in situ TEM investigation on SMSI in heterogeneous catalysis is systematically reviewed, focusing on the formation dynamics, structural evolution during the catalytic reactions, and regulation methods of SMSI. The significant advantages of in situ TEM technologies for SMSI research are also highlighted. Moreover, the challenges and probable development paths of in situ TEM studies on the SMSI are also provided.
Fixed‐time fault‐tolerant control for power system with multiple actuator constraints
Authors: Bai Wen , Xiaoping Liu Peter , Wang Huanqing 
Published: July 2024

AbstractThis paper copes with the fixed‐time fault‐tolerant control problem for a single‐machine infinite power system with static VAR compensators. In order to handle the controller design problem caused by the actuator failures and unknown dead zone input, a fuzzy fault‐tolerant control algorithm is derived by introducing the adaptive backstepping method. An adaptive fixed‐time control strategy is designed to guarantee that the output signal can track the desired trajectory within a fixed time, where the convergence time is independent of the initial condition. Compared with existing results, the proposed controller guarantees the controlled system maintains semiglobal fixed‐time stability and the tracking error converges to a small neighborhood around zero. Both actuator faults and dead zones have been considered, which can better meet the practical control requirements. A simulation example demonstrates the designed controller.
Transition metal dichalcogenide FET‐based dynamic random‐access memory
Authors: Raoofi Mahdiye , Gholipour Morteza 
Published: July 2024

AbstractTransition metal dichalcogenide field‐effect transistors (TMDFETs) as a replacement for conventional metal–oxide–semiconductor field‐effect transistors (MOSFETs) have attracted the attention of researchers in recent years. The efficiency of these devices should be investigated in different aspects in digital systems. One of the important components of such systems is dynamic random‐access memory (DRAM), which is used in most computers and many electronic systems as the main memory due to its small area and simple structure, compared to static memory (SRAM) cells. In this paper, a regular DRAM cell is designed based on TMDFET devices and its performance is compared with a similar cell in conventional MOSFET technology from various aspects, including DRAM‐specific timing characteristics considering changes in design and environmental parameter variations using Monte Carlo simulations. The simulations have been carried out in HSPICE with 16 nm technology under fair conditions for different technologies, at room temperature with a 0.7‐V power supply. The results show that the TMD‐DRAM has 3.55×, 3.08×, and 2.23× faster bitline recovery, merge time, and sense time than Si‐MOS‐DRAM, respectively. The Si‐MOS‐DRAM, on the other hand, has 1.65× faster write time compared to TMD‐DRAM. However, TMD‐DRAM consumes overall higher power than Si‐MOS‐DRAM, and shows higher average read power variability with the σ/μ = 0.476. The TMD‐DRAM also shows higher variability in the studied timing characteristics than Si‐MOS‐DRAM except merge and sense times.
A robust sensor‐less field‐oriented control of six‐phase induction motor drive with reduced common mode voltage
Authors: Shah Krunal , Maurya Rakesh 
Published: July 2024

SummaryThis article narrates a robust sensor‐less indirect rotor field‐oriented control (IRFOC) of a six‐phase asymmetrical induction motor (SPAIM) drive with an online estimation of parameters and reduction of common mode voltage (CMV). In comparison to the conventional IRFOC technique, the proposed IRFOC provides the least CMV using modified space vector modulation (SVM). To guarantee proper operation of IRFOC, accurate estimation of rotor time constant is mandatory; any mismatch in the actual and tuned value may lead to poor performance of the IRFOC algorithm. This problem will be further accelerated with encoder‐less control using model‐based estimators. In this manuscript, the problem of simultaneous estimation of speed and machine parameters is investigated, and a model reference adaptive system (MRAS) based speed estimator accompanied by online estimation of parameters is proposed to improve sturdiness against variation of parameters. A Simulink model of the proposed method is developed and a simulation study is carried out. To validate the simulation results, a scaled prototype model of The SPAIM rated for 2 HP, 200 V is developed and encoder‐less IRFOC for the SPAIM drives is implemented using an STM32F407VG controller board. The performance of the proposed observers is tested and verified for all the possible operating conditions and results are presented.
Acerca del género Ayenia L. (Sterculiaceae) en Cuba
Authors: Fuentes Alicia Rodríguez 
Published: July 2024

ResumenSe realizaron estudios morfológicos en numerosos ejemplares del género Ayenia L. (Sterculiaceae) procedente de varias regiones del país, arrojando la existencia de la Ayenia insulaecola Cristobal, de 2 nuevas especies, la Ayenia cubensis A. Rodríguez y la Ayenia spinosa A. Rodríguez et Bisse, de 3 subespecies de la Ayenia euphrasifolia Griseb., la A. euphrasifolia Griseb. subsp. euphrasifolia, la A. euphrasijolia Griseb. subsp. ophiticola A. Rodríguez y la A. euphrasifolia Griseb. subxp. litoralis A. Rodríguez. Así mismo se desrcibe una nueva subsección de la sect, Leiayenia Griseb., la subsect. Spinosa para las especies Ayenia spinosa A. Rodríguez et Bisse y la Ayenia cajalbanensis Alain. Se ofrece una clave do determinación simple para las especies cubanas.
Die Gattung Mimosa L. (Leguminosae — Mimosoideae) in Cuba
Authors: Bässler Manfred 
Published: July 2024

ZusammenfassungDie Gattung Mimosa L. ist in Cuba mit 10 Arten vertreten, von denen 4 Arten endemisch sind. Mimosa berlandieri Gray (Syn. M. catalinae León) wird als neue Art für Cuba nachgewiesen.Es wird eine taxonomische Revision der cubanischen Arten mit einem neuen Bestimmungsschlüssel und mit Verbreitungskarten für alle Arten vorgelegt.
Über die Gattung Shaferocharis Urban (Rubiaceae) in Cuba
Authors: Manitz Hermann 
Published: July 2024

ZusammenfassungDie Gattung Shaferocharis ist ein Endemit Ost‐Cubas, sie umfaβt 3 Arten. Einige Angaben im Protolog von S. villosa Borhidi werden korrigiert.
Sobre el género Trichomanes L. en Cuba
Authors: Villaverdge Carlos Sánchez , Pichaco Isabel Quintana , Caluff Manuei. García 
Published: July 2024

ResumenSe caracterizan morfológica y anatómicamente las especies del género Trichomnnes L. subgénero Vandenboschia (Copel.) Allan, presentando su distribución geográfica y notas sobre su ecología. Se brindan claves para determinar los subgéneros del género Trichomanes y las especies del subgénero Vandenboschia.
Cytomorphology of the tribe Heliantheae (Asteraceae) from Southern Nigeria
Authors: Gill L. S. , Omoigwi D. I. 
Published: July 2024

SummaryCytomorphological studies of 24 taxa distributed in 13 species and 10 genera have been carried out from Southern Nigeria. Chromosome reports for Spilanthes ciliata (n =13) and new cytotypes in Bidens pilosa (n = 48), Sclerocarpus africanus (n =22) are recorded for the first time. The chromosome counts of 2 varieties of Aspilia africana, i. e. var. ambigua (n =13) and var. guineensis (n =13) differs from the previously reported number of (n = 14). The distribution maps and the achene morphology of the taxa studied are provided for the first time. The occurrence of Spilanthes ciliata in West Africa is reported here for the first time.
Epidermal studies as an aid to taxonomy: Sida L.
Authors: Rao S. Raja Shanmpkha , Saibaba A. M. 
Published: July 2024

SummaryEpidermal studies including trichomes in seven species of Sida have been undertaken. The foliar stomata are anisocytic, anomocytic or tetracytic, the first type being dominant. Further structure and organographic distribution of trichomes in all plant parts have been investigated. Based in structure in all, fifteen trichome types have been recognized. Distribution of foliar epidermal characters, especially those of trichomes, in found to be taxonomically usefull in Sida. Accordingly a key is prepared for the identification of different species of this taxon.
Assessment of the applicability of DFT methods to [Cp*Rh]‐catalyzed hydrogen evolution processes
Authors: Chamkin Aleksandr A. , Chamkina Elena S. 
Published: July 2024

AbstractThe present computational study provides a benchmark of density functional theory (DFT) methods in describing hydrogen evolution processes catalyzed by [Cp*Rh]‐containing organometallic complexes. A test set was composed of 26 elementary reactions featuring chemical transformations and bonding situations essential for the field, including the emerging concept of non‐innocent Cp* behavior. Reference values were obtained from a highly accurate 3/4 complete basis set and 6/7 complete PNO space extrapolated DLPNO‐CCSD(T) energies. The performance of lower‐level extrapolation procedures was also assessed. We considered 84 density functionals (DF) (including 13 generalized gradient approximations (GGA), nine meta‐GGAs, 33 hybrids, and 29 double‐hybrids) and three composite methods (HF‐3c, PBEh‐3c, and r2SCAN‐3c), combined with different types of dispersion corrections (D3(0), D3BJ, D4, and VV10). The most accurate approach is the PBE0‐DH‐D3BJ (MAD of 1.36 kcal mol−1) followed by TPSS0‐D3BJ (MAD of 1.60 kcal mol−1). Low‐cost r2SCAN‐3c composite provides a less accurate but much faster alternative (MAD of 2.39 kcal mol−1). The widely used Minnesota‐family M06‐L, M06, and M06‐2X DFs should be avoided (MADs of 3.70, 3.94, and 4.01 kcal mol−1, respectively).
Wearable sensor systems measure differences in knee laxity between healthy and affected knees during dynamic exercise activities: A systematic review
Authors: van Eijck Sander C. , Vugts Marly M. J. , Janssen Rob P. A. , Hoogendoorn Iris , Ito Keita , van der Steen Maria C. 
Published: July 2024

AbstractPurposeKnee laxity can be experienced as knee instability which may lead to a limitation in the activity of patients. Current methods to determine knee instability are performed in a static setting, which does not always correlate with dynamic knee laxity during activities. Wearables might be able to measure knee laxity in a dynamic setting and could be of added value in the diagnosis and treatment of excessive knee laxity. Therefore, the aim of this systematic review is to provide an overview of the wearables that have been developed and their ability to measure knee laxity during dynamic activities.MethodsThe PRISMA guidelines for systematic reviews were followed. A literature search was conducted in EMBASE, PubMed and Cochrane databases. Included studies assessed patients with knee instability using a non‐invasive wearable sensor system during dynamic activity, with comparison to a reference system or healthy knees. Data extraction was performed by two authors via a predefined format. The risk of bias was assessed by The Dutch checklist for diagnostic tests.ResultsA total of 4734 articles were identified. Thirteen studies were included in the review. The studies showed a great variety of patients, sensor systems, reference tests, outcome measures and performed activities. Nine of the included studies were able to measure differences in patients with knee instability, all including a tri‐axial accelerometer. Differences were not measurable in all parameters and activities in these studies.ConclusionsWearables, including at least a tri‐axial accelerometer, seem promising for measuring dynamic knee laxity in the anterior‐posterior and mediolateral direction. At this stage, it remains unclear if the measured outcomes completely reflect the knee instability that patients experience in daily life.Level of EvidenceLevel III.
Social network strategies to distribute HIV self‐testing kits: a global systematic review and network meta‐analysis
Authors: Hu Siyue , Jing Fengshi , Fan Chengxin , Dai Yifan , Xie Yewei , Zhou Yi , Lv Hang , He Xi , Wu Dan , Tucker Joseph D. , Tang Weiming 
Published: July 2024

AbstractIntroductionSocial network strategies, in which social networks are utilized to influence individuals or communities, are increasingly being used to deliver human immunodeficiency virus (HIV) interventions to key populations. We summarized and critically assessed existing research on the effectiveness of social network strategies in promoting HIV self‐testing (HIVST).MethodsUsing search terms related to social network interventions and HIVST, we searched five databases for trials published between 1st January 2010 and 30th June 2023. Outcomes included uptake of HIV testing, HIV prevalence and linkage to antiretroviral therapy (ART) or HIV care. We used network meta‐analysis to assess the uptake of HIV testing through social network strategies compared with control methods. A pairwise meta‐analysis of studies with a comparison arm that reported outcomes was performed to assess relative risks (RR) and their corresponding 95% confidence intervals (CI).ResultsAmong the 4496 manuscripts identified, 39 studies fulfilled the inclusion criteria, including one quasi‐experimental study, 22 randomized controlled trials and 16 observational studies. Networks HIVST testing was organized by peers (distributed to known peers, 15 studies), partners (distributed to their sexual partners, 16 studies) and peer educators (distributed to unknown peers, 8 studies). Among social networks, simulating the possibilities of ranking position, peer distribution had the highest uptake of HIV testing (84% probability), followed by partner distribution (80% probability) and peer educator distribution (74% probability). Pairwise meta‐analysis showed that peer distribution (RR 2.29, 95% CI 1.54−3.39, 5 studies) and partner distribution (RR 1.76, 95% CI 1.50−2.07, 10 studies) also increased the probability of detecting HIV reactivity during testing within the key population when compared to the control.DiscussionAll of the three social network distribution strategies enhanced the uptake of HIV testing compared to standard facility‐based testing. Linkage to ART or HIV care remained comparable to facility‐based testing across the three HIVST distribution strategies.ConclusionsNetwork‐based HIVST distribution is considered effective in augmenting HIV testing rates and reaching marginalized populations compared to facility‐based testing. These strategies can be integrated with the existing HIV care services, to fill the testing gap among key populations globally.PROSPERO NumberCRD42022361782