Leveraging multimodal large language model for multimodal sequential recommendation.

Multimodal large language models (MLLMs) have demonstrated remarkable superiority in various vision-language tasks due to their unparalleled cross-modal comprehension capabilities and extensive world knowledge, offering promising research paradigms to address the insufficient information exploitation in conventional multimodal recommendation systems. Despite significant advances in existing recommendation approaches based on large language models, they still exhibit notable limitations in multimodal feature recognition and dynamic preference modeling, particularly in handling sequential data effectively and most of them predominantly rely on unimodal user-item interaction information, failing to adequately explore the cross-modal preference differences and the dynamic evolution of user interests within multimodal interaction sequences. These shortcomings have substantially prevented current research from fully unlocking the potential value of MLLMs within recommendation systems.

Pangolin-type fluorescence imaging of circulating tumor cell based on functionalized 2D nanomaterial.

The isolation and detection of circulating tumor cell (CTC) is of great significance for clinical cancer diagnosis and personalized therapy. Herein, a novel pangolin-type fluorescence imaging strategy is proposed to recognize, isolate and image CTC in whole blood. By combining ferroferric oxide (FeO) nanoparticles modified with aptamer (Apt), poly[(9,9-dioctylfluorenyl-2,7-diyl)-alt-co-(1,4-benzo-{2,1',3}-thiadiazole)] (PFBT) and poly(styrene-co-maleic anhydride) (PSMA) formed in situ a large number of polymer dots (Pdots) on the surface of graphene oxide (GO), yielding a μm-sized 2D fluorescent probe Pdots@GO@FeO-Apt.

Independent and joint associations of physical activity and a body shape index with sleep disorders in older adults with cardiometabolic multimorbidity: a cross-sectional study.

Background: Cardiometabolic multimorbidity (CMM) has become a significant public health challenge in the context of global ageing. Sleep disorders are prevalent in older adults with CMM, but their correlations with physical activity and a body shape index (ABSI) remain unclear. This study aimed to investigate the independent and joint associations of physical activity and ABSI with sleep disorders in older adults with CMM.

Deep learning-assisted single-atom detection of copper ions by combining click chemistry and fast scan voltammetry.

Cell ion channels, cell proliferation and metastasis, and many other life activities are inseparable from the regulation of trace or even single copper ion (Cu and/or Cu). In this work, an electrochemical sensor for sensitive quantitative detection of 0.4-4 amol L copper ions is developed by adopting: (1) copper ions catalyzing the click-chemistry reaction to capture numerous signal units; (2) special adsorption assembly method of signal units to ensure signal generation efficiency; and (3) fast scan voltammetry at 400 V s to enhance signal intensity.

An LF-NMR homogeneous sensor for highly sensitive and precise detection of E. coli based on target-triggered CuAAC click reaction.

In this study, a low field nuclear magnetic resonance (LF-NMR) homogeneous sensor was constructed for detection of Escherichia coli (E. coli) based on the copper metabolism of E. coli triggered click reaction.

Faraday cage-type ECL biosensor for the detection of circulating tumor cell MCF-7.

Herein, a Faraday cage-type electrochemiluminescence biosensor was designed for the detection of human breast cancer cell MCF-7. Two kinds of nanomaterials, FeO-APTs and GO@PTCA-APTs, were synthesized as capture unit and signal unit, respectively. In presence of the target MCF-7, the Faraday cage-type electrochemiluminescence biosensor was constructed by forming a complex "capture unit-MCF-7-signal unit".

Electrochemical sensor for single-cell determination of bacteria based on target-triggered click chemistry and fast scan voltammetry.

Herein, an electrochemical sensor for single-cell determination of bacteria was developed based on target-triggered click chemistry and fast scan voltammetry (FSV). In it, bacteria not only are the detection target, but also can use their own metabolism to achieve first-level signal amplification. More electrochemical labels were immobilized on functionalized 2D nanomaterials to achieve second-level signal amplification.

Tunneling or Hopping? A Direct Electrochemical Observation of Electron Transfer in DNA.

We developed an axis-mode donor-DNA-acceptor electrochemical system to distinguish whether electron transfer in DNA occurs by tunneling or hopping. In the axis-mode, rigid stem-loop DNA was designed with the redox probe Ag embedded at the axis of the strand through a C-Ag-C mismatch, which was immobilized onto the electrode surface in a saturated manner. Thus, the rotation, swing, and bending of the DNA strand were restricted and then the number of Ag, the distance between Ag and the electrode, and the chemical environment could be precisely controlled.

Electrochemical aptasensor for Staphylococcus aureus by stepwise signal amplification.

An electrochemical aptasensor for ultrasensitive detection of Staphylococcus aureus (SA) has been developed based on stepwise signal amplification. In the sample processing stage, the specific recognition between SA and aptamer triggers the enzyme-assisted cyclic cleavage to produce a large amount of target DNA (tDNA), realizing the first-level signal amplification. In the sensor assembly stage, tDNA induces a catalytic hairpin assembly (CHA) cycle to capture much more hairpin DNA H2 labeled by the electrochemical tag ferrocene, bringing the second-level signal amplification.

A CRISPR/Cas12a-Mediated Dual-Mode Electrochemical Biosensor for Polymerase Chain Reaction-Free Detection of Genetically Modified Soybean.

A clustered regularly interspaced short palindromic repeats (CRISPR)/Cas12a-mediated dual-mode electrochemical biosensor without polymerase chain reaction (PCR) amplification was designed for sensitive and reliable detection of genetically modified soybean SHZD32-1. A functionalized composite bionanomaterial FeO@AuNPs/DNA-Fc&Ru was synthesized as the signal unit, while a characteristic gene fragment of SHZD32-1 was chosen as the target DNA (tDNA). When Cas12a, crRNA, and tDNA were present simultaneously, a ternary complex Cas12a-crRNA-tDNA was formed, and the nonspecific cleavage ability of the CRISPR/Cas12a system toward single-stranded DNA was activated.

A fast scan cyclic voltammetric digital circuit with precise ohmic drop compensation by online measuring solution resistance and its biosensing application.

In this work, a novel fast scan digital circuit for voltammetric analysis with precious ohmic drop compensation is developed, which is achieved through online measuring solution resistance first and then proportionally feedbacking the output signal to potentiostat's in-phase input through a potentiometer. It mainly consists of a solution resistance measurement module based on AD5933 chip, an ohmic drop automatic compensation module and a STM32F103ZET6 microcontroller. The performance of the circuit is checked successively using pure resistances, RC dummy cells, RC dummy cells incorporating a pseudo-faradaic component, and the ferrocene redox system.