infection is readily disseminated, yet the multiple septic arthritis and extensive migratory skin and soft tissue infections it causes are uncommon and challenging to treat. The infection can be life-threatening, with a mortality rate of 15-31%. Early, targeted antibiotic therapy is critical to improve prognosis.
View Article and Find Full Text PDFHow to effectively improve the poor interfacial adhesion between polylactic acid/poly(butylene adipate-co-terephthalate) (PLA/PBAT) matrix and thermoplastic starch (TPS) is still a challenge. Therefore, this work aims to introduce a convenient method to enhance the performance of PLA/PBAT/TPS blend by melt reactive extrusion. Here, using 4,4'-methylene-bis(N,N-diglycidyl-aniline) (MBDG) containing four epoxy groups as a reactive compatibilizer, and respectively using 1-methylimidazole (MI) or triethylenediamine (TD) as a catalyzer, serial PLA/PBAT/TPS ternary bio-composites are successfully prepared via melt reactive extrusion.
View Article and Find Full Text PDFOrganic thioethers play an important role in the discovery of drugs and natural products. However, the green synthesis of organic sulfide compounds remains a challenging task. The convenient and efficient synthesis of 5-alkoxy-3-halo-4-methylthio-2(5)-furanones from DMSO is performed via the mediation of 1,3-dibromo-5,5-dimethylhydantoin (DBDMH), affording a facile route for the sulfur-functionalization of 3,4-dihalo-2(5)-furanones under transition metal-free conditions.
View Article and Find Full Text PDFInt J Environ Res Public Health
September 2022
The openly released and measured data from automatic hydrological and water quality stations in China provide strong data support for water environmental protection management and scientific research. However, current public data on hydrology and water quality only provide real-time data through data tables in a shared page. To excavate the supporting effect of these data on water environmental protection, this paper designs a water-quality-prediction and pollution-risk early-warning system.
View Article and Find Full Text PDFUsing 3,4-dihalo-2(5H)-furanones and easily available hemostatic drugs, such as tranexamic acid (TA), 4-aminomethylbenzoic acid (ABA), aminocaproic acid (AA) as starting materials, serial multi-functional molecules 2(5H)-furanonyl amino acids are designed by the combination of different pharmacophores, and successfully synthesized by a transition metal-free Michael addition-elimination reaction. The reaction is carried out under mild conditions with ethanol-dichloromethane as solvent and only stirring at room temperature for 24 h, and the yield can be up to 91%. All products are well characterized by infrared spectroscopy (IR), nuclear magnetic resonance (NMR), high-resolution mass spectra (HRMS).
View Article and Find Full Text PDFThe bio-based lactic acid (LA) and the common metal ion chelating agent iminodiacetic acid (IDA) are used to design and prepare a polymeric sustained-release Pb chelating agent by a brief one-step reaction. After the analysis on theoretical calculation for this reaction, poly(lactic acid-iminodiacetic acid) [P(LA--IDA)] with different monomer molar feed ratios is synthesized via direct melt polycondensation. P(LA--IDA) mainly has star-shaped structure, and some of them have two-core or three-core structure.
View Article and Find Full Text PDFA series of (E)-N-2(5H)-furanonyl sulfonyl hydrazone derivatives have been rationally designed and efficiently synthesized by one-pot reaction with good yields for the first time. This green approach with wide substrate range and good selectivity can be achieved at room temperature in a short time in the presence of metal-free catalyst. The cytotoxic activities against three human cancer cell lines of all newly obtained compounds have been evaluated by MTT assay.
View Article and Find Full Text PDFEthnopharmacological Relevance: Danhong Huayu Koufuye (DHK), a compound traditional Chinese medicine, is composed of Salvia miltiorrhiza radix (Salvia miltiorrhiza Bge.), Angelicae Sinensis radix (Angelicae Sinensis (Oliv.) Diels.
View Article and Find Full Text PDFA series of amino acid derivatives are successfully synthesized via a metal-free C-N coupling reaction of 5-alkoxy-3,4-dihalo-2(5H)-furanones and amino acids. Their structures are well characterized with H NMR, C NMR, ESI-MS and elemental analysis. As potential linkers of the 2(5H)-furanone unit with other drug moieties containing a hydroxyl or amino group, the effect of amino acids is investigated by comparison with other 2(5H)-furanone compounds by constructing C-O/C-S bonds.
View Article and Find Full Text PDFLin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
December 2011
Objective: To investigate the maxillary sinus development and provide data for sinus surgery on children.
Method: Two thousand two hundred and thirty-eight children were randomly selected among those who underwent skull and nasal sinus CT scanning because of certain symptoms and signs. Patients were divided into eighteen age cohorts based on their age at the time of the scan.
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
June 2010
Objective: To investigate the nasal sinus development and discuss the relation between sinusitis and nasal development.
Method: One thousand seven hundred and five healthy children and 1424 children with sinusitis were selected randomly. All children underwent naso sinus computer tomography.
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
March 2010
Objective: In order to make a basis for the treatment of nasal sinuses of children and the correlated disease, we investigate the incidence rate of nasal sinusitis of children and explore the correlation between nasal sinusitis of children and CT in Kunming.
Method: Two thousand one hundred and fourteen healthy children and 1535 children with sinusitis were selected randomly. Form whom were undergone nasal sinus computer tomography for different medical reasons.
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
March 2009
Objective: To analyze the characteristics of respiration events of sleep disordered breathing in children.
Method: Thirty-two guide polysomnography was monitored in 203 snoring children. According to AHI and AI, they were divided into five groups and the results were analyzed by polysmith.
Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi
May 2008
Objective: To investigate the relationship between blood levels of lead and the function states of cochlear outer hair cells (OHC).
Method: Two hundred and fifty-six children lived in Pb-Zn mine area and Yiliang country, aged from 6 to 7 years were enrolled in this study. Blood lead (B-Pb) levels were measured.