Microplastic pollution and changes to soil hydraulic characteristics affect the physical properties and functions of soil; however, knowledge remains limited on how microplastics influence soil hydraulic properties. Nonetheless, it is important to understand these relationships to maintain soil health and ensure sustainable land use, especially in the current "plastic age." This case study explored how different particle sizes (20, 200, and 500 μm) and concentrations (up to 6%) of polypropylene microplastics affect the hydraulic properties of three soil textures (loam, clay, and sand).
View Article and Find Full Text PDFTwo new calix[4]resorcinarene-based coordination cages, namely, [Zn4(TPC4R)(PDC)4]·2DMF·6H2O (1-Zn) and [In11(TPC4R)2(PDC)16(μ2-OH)2(H2O)2]·[(CH3)2NH2]·8DMF·20H2O·EtOH (2-In), have been synthesized via solvothermal reactions (TPC4R = tetra(2-(4H-pyrazol-3-yl)pyridine)calix[4]resorcinarene, H2PDC = 3,5-pyridinedicarboxylic acid, DMF = N,N'-dimethylformamide). By carefully tuning different metal ions, two structurally different cages 1-Zn and 2-In were achieved. The former shows a bowl-shaped structure, while the latter features a dumbbell-like structure.
View Article and Find Full Text PDFIntroduction: Chronic heart failure has become one of the main diseases endangering human health in the 21st century. It is characterized by high morbidity and high mortality. With the continuous in-depth study of Traditional Chinese medicine, the treatment of heart failure by Tradional Chinese medicine has made significant progress, especially in improving the clinical symptoms of patients, controlling the development of the disease, and improving the quality of life of patients.
View Article and Find Full Text PDFEffective and selective capture of environmentally toxic CrO from water is desirable for both environment protection and human health, but it still remains a significant challenge. We present a water-stable cationic metal-organic framework (MOF) with large nanotubular channels ( ca. 1.
View Article and Find Full Text PDFA stable microporous anionic metal-organic framework (MOF), [(CH)NH][CdL(HO)]·12HO (1), has been synthesized via solvothermal assembly of a new resorcin[4]arene-functionalized dodecacarboxylic acid (HL) and Cd(II) cations. The constructed MOF (1) was characterized by single-crystal X-ray diffraction and other physicochemical analyses. 1 exhibits a fascinating 3D microporous framework structure, in which the free water molecules and the [(CH)NH] cations were located.
View Article and Find Full Text PDFIn this work, we report a new polyoxovanadate-resorcin[4]arene-based metal-organic framework (PMOF), [CoLVO]·3DMF·5HO (1), assembled with a newly functionalized wheel-like resorcin[4]arene ligand (L). 1 features an elegant porous motif and represents a rare example of PMOFs composed of both a resorcin[4]arene ligand and polyoxovanadate. Remarkably, 1 shows open V sites in the channel, which makes 1 an efficient heterogeneous Lewis acid catalyst for the cycloaddition of carbon dioxide to epoxides with high conversion and selectivity.
View Article and Find Full Text PDFPurpose: Explore the value of ultrasonography for observation of early healing of humeral shaft fractures.
Methods: Sixty-five humeral shaft fracture patients were recruited. They were examined sonographically with color Doppler ultrasonography (CDU) and/or power Doppler ultrasonography (PDU) during the 1st week, 2nd week, 3rd week, 4th week, 9th week, and 15th week after the initial surgical procedure of internal fixation.
Zhongguo Ji Sheng Chong Xue Yu Ji Sheng Chong Bing Za Zhi
August 2007
This is to retrospectively review and summarize the ultrasonic images of 214 patients who were diagnosed as clonorchiasis and received treatment. The major changes in ultrasonography were found in gallbladder and hepatic bile duct. Flocculent echos in the gallbladder were the characteristic feature, which disappeared after chemotherapy.
View Article and Find Full Text PDFObjective: To study diffuse alveolar hemorrhage (DAH) in patients with hematologic malignancies after chemotherapy and discuss the possible etiology and appropriate therapy.
Methods: Symptoms, physical examinations, laboratory examination, chest radiographs or computed tomographic (CT) scans, treatments and outcomes of two patients with acute lymphoblastic leukemia (ALL) and non-Hodgkin lymphoma (NHL) each after chemotherapy were presented.
Results: Both of the patients developed cough, progressive dyspnea, a drop of hemoglobin level, hypoxemia and widespread pulmonary infiltrate on chest radiographs or CT scans after chemotherapy.
Objective: To study the association between the functional polymorphism of matrix metalloproteinases (MMPs) and the development of chronic obstructive pulmonary disease (COPD).
Methods: 147 COPD patients and 120 healthy smoking controls were selected. Spirometry and chest X-rays had been taken.