Multifunctional biocarbon/cellulose composites: Synchronizing superior EMI shielding, flame Retardancy and biofertilization via cradle-to-cradle strategy.

Current shielding technologies predominantly focus on performance optimization while neglecting fire safety considerations especially in construction building. To address the vulnerability of electromagnetic interference (EMI) shielding materials to accidental fires, we develop sustainable biocarbon/cellulose composites with integrated EMI shielding and flame-retardant capabilities. This approach employs porous biocarbon particles as functional units combined with three-dimensional cellulose networks through hydrogen bonding, van der Waals forces, and physical entanglements.

Synthesis of 20α/β-hydroxyprogesterone-trimethyl lock-triglyceride-mimetic prodrugs and its bioavailability study in rats.

20α-hydroxyprogesterone (20α-DHP) and 20β-hydroxyprogesterone (20β-DHP), the C-20 hydroxylated metabolites of progesterone, constitute a pair of diastereoisomers of 20-hydroxyprogesterone (20-DHP) that demonstrate progesterone-like biological activities. This study employed the triglyceride (TG) -mimetic prodrug strategy and the trimethyl lock (TML) lactonization mechanism to chemically synthesize four 20-DHP-TML-TG-mimetic prodrugs (20α-DHP-TML-C5-TG, 20β-DHP-TML-C5-TG, 20α-DHP-TML-C5βMe-TG, and 20β-DHP-TML-C5βMe-TG) by coupling 20α-DHP or 20β-DHP with the TG backbone through two different TML-containing linkers. A liquid chromatography-tandem mass spectrometry (LC-MS/MS) method was established to determine the concentrations of 20α-DHP and 20β-DHP in rat plasma.

Study on 20-hydroxyprogesterone: Chiral resolution, content determination and progesterone-like activity.

20-hydroxyprogesterone (20-DHP) is a natural metabolite of progesterone which occurs with two diastereoisomers: 20α-DHP and 20β-DHP. They have drawn attention for their progesterone-like activity since the middle of the 20th century. However, the literature from that era bears witness to a lack of consensus regarding their specific effects.

Microstructure and Property Evolution of Diamond/GaInSn Composites under Thermal Load and High Humidity.

As a thermal interface material, diamond/GaInSn composites have wide-ranging application prospects in the thermal management of chips. However, studies on systematic reliability that can guide the practical application of diamond/GaInSn in the high-temperature, high-temperature impact, or high-humidity service environments that are faced by chips remain lacking. In this study, the performance evolution of diamond/GaInSn was studied under high-temperature storage (150 °C), high- and low-temperature cycling (-50 °C to 125 °C), and high temperature and high humidity (85 °C and 85% humidity).

Synthesis and Biological Activities of Novel Pyrazole Carboxamides Containing an Aryloxypyridyl Ethylamine Module.

Pyrazole carboxamide is widely utilized in agricultural crop protection. In this research, we synthesized two classes of compounds, namely, pyrazole-5-carboxamide () and pyrazole-4-carboxamide (), which are distinguished by the inclusion of the -1-(6-aryloxypyridin-3-yl) ethylamine skeleton. This design was inspired by the frequent occurrence of diaryl ether modules in pesticide molecules.

Thermal stability and decomposition kinetics of mixed-cation halide perovskites.

Organic-inorganic halide perovskites (OIHPs) have emerged as one of the most efficient photovoltaic materials due to their superior properties. However, improving their stability remains a key challenge. Herein, we investigate the thermal decomposition properties of OIHP FAMAPbI with mixed cations of formamidinium (FA) and methylammonium (MA).

Temperature and metal ions regulate larval diapause termination via the 20-hydroxyecdysone and juvenile hormone pathways in Monochamus alternatus.

Background: Diapause allows insects to survive harsh environments, and its termination is crucial for their normal development after diapause. However, little is known about the regulatory pathways and signals involved in insect diapause termination.

Results: We discovered that high temperature (25 °C) influenced larval diapause termination in Monochamus alternatus.

Fungicidal Action of the Triphenylphosphonium-Driven Succinate Dehydrogenase Inhibitors Is Mediated by Reactive Oxygen Species and Suggests an Effective Resistance Management Strategy.

Succinate dehydrogenase (SDH) is an effective target of SDH inhibitor (SDHI) fungicides which received more and more attention in recent years. However, there is no good solution to their rapidly growing drug resistance caused by frequent use. In this study, three triphenylphosphonium (TPP)-conjugated boscalid analogues were synthesized and tested for antifungal activities.

Classification of organic and ordinary kiwifruit by chemometrics analysis of elemental fingerprint and stable isotopic ratios.

Elemental fingerprint, stable isotopic analysis, and chemometrics were combined to identify organic kiwifruit from ordinarily cultivated kiwifruit. Samples of organic (n1 = 78) and ordinary kiwifruit (n2 = 85) were collected from neighboring areas. For elemental fingerprint, the contents of 15 elements in fresh fruits, including Al, Cr, Mg, Pb, Zn, Ca, Cu, Mn, Se, Cd, Fe, Na, Sr, Co, and K, were determined by inductively coupled plasma optical emission spectrometry (ICP-OES).

Synthesis and fungicidal activity of methyl (E)-1-(2-((E)-2-methoxy-1-(methoxyimino)-2-oxoethyl)benzyl)-2-(1-arylidene)hydrazine-1-carboxylates †‡.

To discover novel strobilurin fungicides, a series of methyl (E)-1-(2-((E)-2-methoxy-1-(methoxy-imino)-2-oxoethyl)benzyl)-2-(1-arylidene)hydrazine-1-carboxylates were designed based on the principle of biologically active splicing and the receptor target structure. The fungicidal activity results show that this class of compounds has excellent fungicidal activity, especially against S. sclerotiorum (Lib.

The genus Passaloecus Shuckard (Hymenoptera: Crabronidae) from China with four new species and two new records.

Four new species of genus Passaloecus Shuckard, (Crabronidae: Pemphredoninae: Pemphredonini) from China are described, namely P. bisulcatus Bashir Ma, sp. nov.

Fusion of near-infrared and fluorescence spectroscopy for untargeted fraud detection of Chinese tea seed oil using chemometric methods.

Background: This paper investigated the feasibility of data fusion of near-infrared (NIR) and fluorescence spectroscopy for rapid analysis of cheap vegetable oils in Chinese Camellia oleifera Abel. (COA) oil. Because practical frauds usually involve adulterations of multiple known and unknown cheap oils, traditional analytical methods aimed at detecting one or more known adulterants are insufficient to identify adulterated COA oil.

Synthesis, Antifungal Activity and Structure-Activity Relationships of Novel 3-(Difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic Acid Amides.

A series of novel 3-(difluoromethyl)-1-methyl-1H-pyrazole-4-carboxylic acid amides were synthesized and their activities were tested against seven phytopathogenic fungi by an in vitro mycelia growth inhibition assay. Most of them displayed moderate to excellent activities. Among them N-(2-(5-bromo-1H-indazol-1-yl)phenyl)-3-(difluoro-methyl)-1-methyl-1H-pyrazole-4-carboxamide (9m) exhibited higher antifungal activity against the seven phytopathogenic fungi than boscalid.

Synthesis and bioactivity of 2',3'-benzoabscisic acid analogs.

2',3'-Benzoabscisic acid 4a is significantly more active than (±)-ABA and can be potentially used as a plant growth regulator for agriculture. In this study, six 4a analogs were designed and synthesized. Bioassay showed that 4a displayed greater activity than (±)-ABA and the six analogs produced less inhibition than 4a itself.

Synthesis, antifungal activity and QSAR of some novel carboxylic acid amides.

A series of novel aromatic carboxylic acid amides were synthesized and tested for their activities against six phytopathogenic fungi by an in vitro mycelia growth inhibition assay. Most of them displayed moderate to good activity. Among them N-(2-(1H-indazol-1-yl)phenyl)-2-(trifluoromethyl)benzamide (3c) exhibited the highest antifungal activity against Pythium aphanidermatum (EC50 = 16.

A highly efficient regioselective addition of acetylides to enediones based on steric effects.

A simple and efficient strategy for the synthesis of 1-ethynylcyclohex-2-enol derivatives was developed utilizing regioselective addition of acetylides to enediones based on steric effects. Further investigation of the substrate scope of enediones indicated that all the addition reactions ocurred in good yield.

A new fungicidal lactone from Xylocarpus granatum (Meliaceae).

A new lactone was isolated from the leaves of Xylocarpus granatum, along with three known compounds: triacontanol, beta-sitosterol and kaempferol-3-O-beta-D-glucoside. Its structure was elucidated as 3-(1-hydroxyethyl)-4,4-dimethyl-4-butyrolactone (1) by infrared, (1)H and (13)C NMR and ESI-MS data. At a concentration of 20 microg mL(-1), the new lactone gave a 67.