Lead Halide Perovskite Nanocrystals in Metal-Organic Frameworks: Synthesis, Properties, and Applications.

Halide perovskite nanocrystals (PeNCs) with their exceptional light absorption and tunable bandgap, are promising candidates for solar energy harvesting and high-performance photodetectors. However, the susceptibility of PeNCs to degradation limits their widespread application. The integration of halide perovskites within metal-organic frameworks (MOFs) has recently garnered significant attention as a strategy to create composite materials.

Large-Sized Poly (Triazine Imide) Crystals with Minimized Defects for High-Efficiency Overall Water Splitting.

Poly (triazine imide) (PTI), a highly crystalline carbon nitride, has attracted considerable attention due to its capacity to achieve one-step-excitation overall water splitting. The crystallinity of PTI crystals can be substantially enhanced by manipulating the polymerization temperature and the type of molten salt. However, the particle size of synthetic crystals is usually less than 200 nm, and the synthesis of larger and well-defined PTI crystals has yet to be accomplished.

Can mutation abundance assess the biological behavior of BRAF-positive papillary thyroid carcinoma?

Background: BRAF mutation is the most common genetic change in papillary thyroid carcinoma (PTC). Nevertheless, the association between BRAF mutation status and abundance and the biological behavior of PTC is unclear. Thus, this study investigated whether BRAF mutation status and abundance are related to PTC biological behavior and whether BRAF mutation abundance can be used to further stratify risk.

A protein-based classifier for differentiating follicular thyroid adenoma and carcinoma.

Differentiating follicular thyroid adenoma (FTA) from carcinoma (FTC) remains challenging due to similar histological features separate from invasion. This study developed and validated DNA- and/or protein-based classifiers. A total of 2443 thyroid samples from 1568 patients were obtained from 24 centers in China and Singapore.

Proteomic analysis reveals modulation of key proteins in follicular thyroid cancer progression.

Background: Cytopathology cannot be used to reliably distinguish follicular thyroid adenoma (FTA) from follicular thyroid carcinoma (FTC), the second most common form of thyroid cancer, because they exhibit nearly identical cellular morphology. Given the challenges in diagnosis and treatment, this study aims to identify the mechanisms underlying FTC is essential.

Methods: Using parallel reaction monitoring-mass spectrometry (PRM-MS) assays, we identified and quantified 94 differentially expressed protein candidates from a retrospective cohort of 1085 FTC and FTA tissue samples from 18 clinical centers.

Environment of Solvent-Controlled Chemoselective Asymmetric Hydroperoxidation and Hydroxylation of 5-Pyrazolone Ketimines Catalyzed by Bifunctional Organocatalysts.

Chemoselectivity often garners significant attention in organic synthesis, serving as a primary strategy for producing a variety of functionalized products from the same substrate. The first environment of solvent-controlled chemoselective asymmetric hydroperoxidation and hydroxylation of 5-pyrazolone ketimines has been achieved, using an acid-base bifunctional chiral squaramide as the organocatalyst, affording a range of enantioenriched products of hydroperoxidation and hydroxylation with high stereoselectivities (up to 90% ).

Iridium-Catalyzed Asymmetric Allenylic Substitution via Kinetic Resolution Enabled by New Monodentate Ligands.

Iridium-catalyzed asymmetric allenylic substitution represents a useful method for the construction of allenes bearing an allenylic central chirality, but current success has uniformly relied on only one specific chiral bidentate ligand. Herein, we address the limitation by the design of a new type of monodentate ligands leading to not only excellent enantiocontrol in allenylic substitution but also efficient kinetic resolution of α-allenylic alcohols, a new phenomenon never observed before in iridium-catalyzed allenylic substitution. This is also a rare demonstration of the non-enzymatic kinetic resolution of α-allenylic alcohols.

Breaking barriers: noninvasive AI model for BRAF mutation identification.

Objective: BRAF is the most common mutation found in thyroid cancer and is particularly associated with papillary thyroid carcinoma (PTC). Currently, genetic mutation detection relies on invasive procedures. This study aimed to extract radiomic features and utilize deep transfer learning (DTL) from ultrasound images to develop a noninvasive artificial intelligence model for identifying BRAF mutations.

Development and validation of knowledge, attitude, and practice scale regarding antibiotic use for Chinese medical students.

Aims And Objectives: This study aimed to develop and validate a knowledge, attitude, and practice scale of antibiotic use for Chinese medical students.

Method: A five-phased procedure was adopted: (a) A item pool was constructed after literature review; (b) Delphi method was used to refine the items; (c) A pilot study was conducted to clarify the item; (d) Item analysis and exploratory factor analysis were used to finalize the scale; (e) Content validity, construct validity and reliability of the scale were analysed.

Results: The scale of 32 items, respectively 15, 9, and 8 for knowledge, attitude, and practice, was finalized.

Radiomics and deep learning for large volume lymph node metastasis in papillary thyroid carcinoma.

Background: Thyroid cancer is prone to early lymph node metastasis (LNM), and patients with large volume LNM (LVLNM) tend to have a poorer prognosis. The aim of this study was to predict LVLNM in before surgery based on radiomics and deep learning (DL).

Methods: A multicenter retrospective study was performed, including 854 papillary thyroid carcinoma (PTC) patients from three centers.

Moisture Power Generation: From Material Selection to Device Structure Optimization.

Moisture power generation (MPG) technology, producing clean and sustainable energy from a humid environment, has drawn significant attention and research efforts in recent years as a means of easing the energy crisis. Despite the rapid progress, MPG technology still faces numerous challenges with the most significant one being the low power-generating performance of individual MPG devices. In this review, we introduce the background and underlying principles of MPG technology while thoroughly explaining how the selection of suitable materials (carbons, polymers, inorganic salts, etc.

Diastereo-divergent synthesis of chiral hindered ethers via a synergistic calcium(II)/gold(I) catalyzed cascade hydration/1,4-addition reaction.

Hindered ethers are ubiquitous in natural products and bioactive molecules. However, developing an efficient method for the stereocontrolled synthesis of all stereoisomers of chiral hindered ethers is highly desirable but challenging. Here we show a strategy that utilizes in situ-generated water as a nucleophile in an asymmetric cascade reaction involving two highly reactive intermediates, 3-furyl methyl cations and ortho-quinone methides (o-QMs), to synthesize chiral hindered ethers.

Aminated graphene quantum dots/CdS nanobelts for enhanced photocatalytic degradation of RhB dye under visible light.

CdS nanoparticles have wide applications as photocatalysts for degradation of organic pollutants, but due to their limited turnover number and off-pathway charge recombination processes, their degradation efficiency is low. Herein, aminated graphene quantum dots/CdS (GQDs/CdS) nanobelts were successfully fabricated by solvothermal and hydrothermal processes. The prepared GQDs/CdS were characterized by physical methods to investigate their structure, morphology, optical properties, specific surface area, element composition, and chemical state.

Risk stratification of papillary thyroid cancers using multidimensional machine learning.

Background: Papillary thyroid cancer (PTC) is one of the most common endocrine malignancies with different risk levels. However, preoperative risk assessment of PTC is still a challenge in the worldwide. Here, the authors first report a Preoperative Risk Assessment Classifier for PTC (PRAC-PTC) by multidimensional features including clinical indicators, immune indices, genetic feature, and proteomics.

US of thyroid nodules: can AI-assisted diagnostic system compete with fine needle aspiration?

Objectives: Artificial intelligence (AI) systems can diagnose thyroid nodules with similar or better performance than radiologists. Little is known about how this performance compares with that achieved through fine needle aspiration (FNA). This study aims to compare the diagnostic yields of FNA cytopathology alone and combined with BRAFV600E mutation analysis and an AI diagnostic system.

Ru-Catalyzed Hydroboration of Ynones Leads to a Nontraditional Mode of Reactivity.

Although hydroboration of simple ketones and alkynes have been well-established, little is known about the unique hydroboration reactivity for ynones, a family of important building blocks. Herein we report a new reaction mode of ynones leading to structurally novel and synthetically useful but previously inaccessible products, vinyl α-hydroxylboronates, under mild ruthenium-catalyzed hydroboration conditions. This reaction features high efficiency, a broad scope, and complete chemo-, regio-, and stereoselectivity, in spite of many possible competitive pathways.

Effect of asparagine, corncob biochar and Fe(II) on anaerobic biological treatment under low temperature: Enhanced performance and microbial community dynamic.

To ensure the efficiency of anaerobic biological treatment technology at lower temperature will expand the application of anaerobic reactor in practical industrial wastewater treatment. Through a batch experiment, asparagine, corncob biochar and Fe were selected as strengthening measures to analyze the effects on the anaerobic sludge characteristics, microbial community and functional genes in the low temperature (15 °C). Results showed that after 21 days, asparagine began to promote chemical oxygen demand (COD) removal by the anaerobic treatment, with highest COD removal rate (81.

Environmentally Friendly g-CN/Sepiolite Fiber for Enhanced Degradation of Dye under Visible Light.

Herein, novel visible light active graphitic carbon nitride (g-CN)/sepiolite fiber (CN/SS) composites were fabricated via a facile calcination route, exploiting melamine and thiourea as precursors, and sepiolite fiber as support, for efficient degradation of organic dye methylene blue (MB). The as-prepared CN/SS composites were characterized by various characterization techniques based on structural and microstructural analyses. The effects of CN loading amount, catalyst dosage and initial concentration of dye on the removal rate of dye under visible light were systematically studied.

Recyclable NiO/sepiolite as adsorbent to remove organic dye and its regeneration.

In this study, the impregnation synthesis of NiO/sepiolite and its application for dye removal during wastewater treatment is introduced. The NiO/sepiolite materials act as an adsorbent/catalyst. It comprises a unique combination of adsorption and high-temperature gas flow regeneration (the NiO/sepiolite acts as a catalyst at this stage, using regeneration rate as evaluation index of catalytic activity of NiO/sepiolite) in a single unit, in which the NiO/sepiolite was regenerated and reused for the next round adsorption of dye.

Effect of hydraulic retention time on the denitrification performance and metabolic mechanism of a multi-chambered bio-electrochemical system.

The effects of hydraulic retention time (HRT) on the denitrification performance of the multi-chambered bio-electrochemistry system and the metabolic mechanism of the microbial community were investigated. Results indicated that the NO-N and NO-N removal efficiency was up to 99.5% and 99.

Biomimetic approach to the catalytic enantioselective synthesis of tetracyclic isochroman.

Polyketide oligomers containing the structure of tetracyclic isochroman comprise a large class of natural products with diverse activity. However, a general and stereoselective method towards the rapid construction of this structure remains challenging due to the inherent instability and complex stereochemistry of polyketide. By mimicking the biosynthetic pathway of this structurally diverse set of natural products, we herein develop an asymmetric hetero-Diels-Alder reaction of in-situ generated isochromene and ortho-quinonemethide.

Allylsilane Reagent-Controlled Divergent Asymmetric Catalytic Reactions of 2-Naphthoquinone-1-methide.

Herein, the first allylsilane reagent-controlled divergent asymmetric Hosomi-Sakurai conjugate allylation and hetero-Diels-Alder (HDA) with 2-naphthoquinone-1-methide (2-Nap-Q-1-M) under the catalysis of Sc /Feng ligand complex is reported. With these methods, a variety of uniquely substituted chiral allyl-functionalized diaryl compounds and naphthopyran products were obtained in a straightforward and highly stereoselective (up to 96.5:3.

Effect of circulation and micro-aeration on sludge characteristics and microbial community in an ABR for treating traditional Chinese medicine wastewater.

The effects of circulation reflux and micro-aeration on the performance of a modified anaerobic baffled reactor (ABR) for treatment of traditional Chinese medicine (TCM) wastewater were evaluated. The characteristics of anaerobic sludge and microbial community structure in the modified ABR were also investigated. The results indicated that with conditions of reflux ratio of 1, reflux ratio of 2, reflux ratio of 2 with micro-aeration, and reflux ratio of 3, the modified ABR achieved an average COD removal efficiency of 90%, 87.

Adsorptive removal of methylene blue by CuO-acid modified sepiolite as effective adsorbent and its regeneration with high-temperature gas stream.

In this study, the dynamic adsorption of methylene blue dye onto CuO-acid modified sepiolite was investigated. Meanwhile, the equilibrium and kinetic data of the adsorption process were studied to understand the adsorption mechanism. Furthermore, a high-temperature gas stream was applied to regenerate the adsorbent.