Mixed organic acids as an effective green modifier for enhancing PAH degradation by ZIF-8@ B. subtilis ZL09-26.

Although a protective shell based on a metal-organic framework (MOF) can effectively improve the remediation of polycyclic aromatic hydrocarbons (PAHs) by microorganisms, the functional characteristics of the shell are often limited by the surface charge, chemical properties and intrinsic strain characteristics. This study explored the potential of mixed organic acids (MA) as an eco-friendly modifier for zeolite imidazolate framework-8 (ZIF-8), facilitating the formation of a biomimetic mineralized shell around Bacillus subtilis ZL09-26. The addition of MA into the ZIF-8 protective shell was found to stimulate growth and bolster cell viability.

Iron-Derepressed Robust Production of Fusarinine C Siderophore by .

Siderophore biosynthesis is severely inhibited by iron sufficiency, limiting microbial production of siderophores on a large industrial scale. Herein, we report novel iron-derepressed and robust production of the fungal siderophore fusarinine C (FsC) in , achieved by metabolic reprogramming coupling Raman-based single-cell sorting (RACS). First, we deciphered the mechanisms of iron repression on siderophore biosynthesis in this fungus.

Design and analysis of teaching early warning system based on multimodal data in an intelligent learning environment.

In online teaching environments, the lack of direct emotional interaction between teachers and students poses challenges for teachers to consciously and effectively manage their emotional expressions. The design and implementation of an early warning system for teaching provide a novel approach to intelligent evaluation and improvement of online education. This study focuses on segmenting different emotional segments and recognizing emotions in instructional videos.

Screening and Identification of Bacteriophages VC3 and Its Role in the Inhibition and Removal of Biofilms in Seafood.

As biological control agents, bacteriophages can both inhibit the pathogenic bacteria and remove the bacterial biofilms from the seafood. is the pathogen of cholera and the severe infection could lead watery diarrhea and even death. The double-layer agar plate method was used to isolate and screen the bacteriophages from the samples of aquaculture water and sewage.

[Characteristics, microbial composition, and mycotoxin profile of fermented traditional Chinese medicines].

Fermented traditional Chinese medicine(TCM) has a long history of medicinal use, such as Sojae Semen Praeparatum, Arisaema Cum Bile, Pinelliae Rhizoma Fermentata, red yeast rice, and Jianqu. Fermentation technology was recorded in the earliest TCM work, Shen Nong's Classic of the Materia Medica. Microorganisms are essential components of the fermentation process.

Efficient Hydrolysis of Fish Parvalbumin by Marine Bacterial Protease VSP2V-280: Allergen Removal.

Parvalbumin is a major allergen in fish. However, there is currently no effective and safe way to remove this allergen from fish. In this study, protease gene VSP2V-280 of marine bacteria sp.

A Universal Approach Toward Intrinsically Flexible All-Inorganic Perovskite-Gel Composites with Full-Color Luminescence.

The combination of all-inorganic perovskites (PVSKs) and polymers allows for free-standing flexible optoelectronic devices. However, solubility difference of the PVSK precursors and concerns over the compatibility between polymer carriers and PVSKs imply a great challenge to incorporate different kinds of PVSKs into polymer matrices by the same manufacturing process. In this work, PVSK precursors are introduced into poly(2-hydroxyethyl acrylate) (PHEA) hydrogels in sequence, in which the PVSK-gel composites are achieved with full-color emissions by simply varying the precursor species.

Novel Angiotensin-Converting Enzyme-Inhibitory Peptides Obtained from : Preparation, Identification and Potential Antihypertensive Mechanism.

Peptides possessing antihypertensive attributes via inhibiting the angiotensin-converting enzyme (ACE) were derived through the enzymatic degradation of (ribbonfish) using alkaline protease. The resulting mixture underwent filtration using centrifugation, ultrafiltration tubes, and Sephadex G-25 gels. Peptides exhibiting ACE-inhibitory properties and DPPH free-radical-scavenging abilities were isolated and subsequently purified via LC/MS-MS, leading to the identification of over 100 peptide components.

Chemical Reaction of FA Cations Enables Efficient and Stable Perovskite Solar Cells.

Organometal halide perovskite solar cells (PSCs) have received great attention owing to a rapid increase in power conversion efficiency (PCE) over the last decade. However, the deficit of long-term stability is a major obstacle to the implementation of PSCs in commercialization. The defects in perovskite films are considered as one of the primary causes.

Aptamer-Based Sensor for Rapid and Sensitive Detection of Ofloxacin in Meat Products.

Ofloxacin (OFL) is widely used in animal husbandry and aquaculture due to its low price and broad spectrum of bacterial inhibition, etc. However, it is difficult to degrade and is retained in animal-derived food products, which are hazardous to human health. In this study, a simple and efficient method was developed for the detection of OFL residues in meat products.

Enrofloxacin Rapid Detection in Aquatic Foods: Based on DNA Aptamer Sensor.

Enrofloxacin (ENR) is widely used as a synthetic fluoroquinolone antibiotic for disease control in aquatic animals. ENR aptamers were screened in this study using the magnetic bead-SELEX method, and a graphene oxide fluorescent sensor was developed to detect the ENR residues in aquatic products. Firstly, ENR was conjugated to amino magnetic beads by amidation reaction, and then the aptamer sequences showing high affinity to ENR were screened step by step by using the SELEX screening method.

Preparation of Sweet Potato Porous Starch by Marine Dextranase and Its Adsorption Characteristics.

Dextranase (EC 3.2.1.

The Screening and Identification of a Dextranase-Secreting Marine Actinmycete sp. K1 and Study of Its Enzymatic Characteristics.

In this study, an actinomycete was isolated from sea mud. The strain K1 was identified as sp. by 16S rDNA.

Morphological Changes and Strong Cytotoxicity in by Overexpressing Delta-12-Desaturase.

In this study, delta-12 desaturase was overexpressed in using the single-copy integrative vector pINA1312 and multicopy integrative vector pINA1292, resulting in the engineered yeast strains 1312-12 and 1292-12, respectively. The content of intracellular linoleic acid (LA) in the 1292-12 strain was much higher than in the 1312-12 strain and the control group. One interesting finding was that the 1292-12 strain showed obvious changes in surface morphology.

CLDN5: From structure and regulation to roles in tumors and other diseases beyond CNS disorders.

Claudin-5 (CLDN5) is an essential component of tight junctions (TJs) and is critical for the integrity of the blood-brain barrier (BBB), ensuring homeostasis and protection from damage to the central nervous system (CNS). Currently, many researchers have summarized the role and mechanisms of CLDN5 in CNS diseases. However, it is noteworthy that CLDN5 also plays a significant role in tumor growth and metastasis.

In Situ Surface Reconstruction toward Planar Heterojunction for Efficient and Stable FAPbI Quantum Dot Solar Cells.

Pure-phase α-FAPbI quantum dots (QDs) are the focus of an increasing interest in photovoltaics due to their superior ambient stability, large absorption coefficient, and long charge-carrier lifetime. However, the trap states induced by the ligand-exchange process limit the photovoltaic performances. Here, a simple post treatment using methylamine thiocyanate is developed to reconstruct the FAPbI -QD film surface, in which a MAPbI capping layer with a thickness of 6.

Stable Electron-Transport-Layer-Free Perovskite Solar Cells with over 22% Power Conversion Efficiency.

Due to their low cost and simplified production process, electron-transport-layer-free (ETL-free) perovskite solar cells (PSCs) have attracted great attention recently. However, the performance of ETL-free PSCs is still at a disadvantage compared to cells with a conventional n-i-p structure due to the severe recombination of charge carriers at the perovskite/anode interface. Here, we report a strategy to fabricate stable ETL-free FAPbI PSCs by in situ formation of a low dimensional perovskite layer between the FTO and the perovskite.

Overexpression of Shinorhizobium meliloti flavohemoglobin improves cell growth and fatty acid biosynthesis in oleaginous fungus Mucor circinelloides.

Oxygen availability is a limiting factor for lipid biosynthesis in eukaryotic microorganisms. Two bacterial hemoglobins from Vitreoscilla sp. (VHb) and Shinorhizobium meliloti (SHb), which deliver oxygen to the respiratory chain to produce more ATP, were introduced into Mucor circinelloides to alleviate oxygen limitation, thereby improving cell growth and fatty acid production.

The GATA type transcriptional factors regulate pullulan biosynthesis in Aureobasidium melanogenum P16.

Aureobasidium melanogenum P16, the high pullulan producer, had only one GATA type transcriptional activator AreA and one GATA type transcriptional repressor AreB. It was found that 2.4 g/L of (NH)SO had obvious nitrogen repression on pullulan biosynthesis by A.

Liamocins biosynthesis, its regulation in spp., and their bioactivities.

Liamocins synthesized by spp. are glycolipids composed of a single mannitol or arabitol headgroup linked to either three, four or even six 3,5-dihydroxydecanoic ester tail-groups. The highest titer of liamocin achieved was over 40.

[The application of neonatal intensive care unit main caregiver ability evaluation index system in premature infants with hypoxic ischemic encephalopathy].

Objective: To explore the effect of main caregiver ability evaluation index system (MCAEIS) in neonatal intensive care unit (NICU) in the treatment of hypoxic-ischemic encephalopathy (HIE).

Methods: One hundred and eight cases of HIE preterm infants treated in NICU of the First Hospital of Hebei Medical University from August 2018 to August 2019 were retrospectively analyzed. The infants were divided into routine nursing control group and MCAEIS group, 54 cases each.

Embolization of hepatic arterioportal shunt with ethanol-soaked gelatin sponge.

Objective: The objective of this study is to investigate the effect of ethanol-soaked gelatin sponge (ESG) in the treatment of hepatic arterioportal shunt (APS).

Methods: Hepatocellular carcinoma (HCC) patients with APS were divided into experimental group (Group E) and control group (Group C). Patients in Group E were treated with ESG for APS embolization, whereas patients in Group C were treated with polyvinyl alcohol particles for APS embolization, with other treatment unchanged.