Materials Express最新文献_第7页

Modulation of two-dimensional Pt-based intermetallic nanoplates for fuel cells 燃料电池用二维pt基金属间纳米板的调制

4区材料科学

Materials Express Pub Date : 2023-11-01 DOI: 10.1166/mex.2023.2541

Jingchun Guo, Ran Wang, Jiao Yu, Zhilin Zhang, Xucheng Fu

引用次数: 0

Application of nanogold-cisplatin drug delivery system in laryngeal cancer chemoradiotherapy 纳米金-顺铂给药系统在喉癌放化疗中的应用

4区材料科学

Materials Express Pub Date : 2023-11-01 DOI: 10.1166/mex.2023.2539

Guosheng Xing, Ruihua Kong, Shuli Yang, Ruixue Ma, Zhiguo Sun

引用次数: 0

The role of nanomagnetic beads in diagnosis of early breast cancer by ductoscopy combined with CEA expression of tumor marker 纳米磁珠联合肿瘤标志物CEA表达在导管镜诊断早期乳腺癌中的作用

4区材料科学

Materials Express Pub Date : 2023-11-01 DOI: 10.1166/mex.2023.2535

Jin Li, Huyan Su, Xiaofeng Li

{"title":"The role of nanomagnetic beads in diagnosis of early breast cancer by ductoscopy combined with CEA expression of tumor marker","authors":"Jin Li, Huyan Su, Xiaofeng Li","doi":"10.1166/mex.2023.2535","DOIUrl":"https://doi.org/10.1166/mex.2023.2535","url":null,"abstract":"In this study, nipple discharge patients were selected as subjects to evaluate the diagnostic value of ductoscopy and the tumor marker CEA expression in early occulted breast cancer. A retrospective analysis was performed on 121 pathological nipple discharge patients who received treatment in our hospital. Thirty-two parturients who delivered normally in our hospital during the same period were randomly selected to be included in the control group. Samples of the subjects’ milk and nipple discharge were collected. The contents of tumor markers CEA, CA153, and CA125 were measured in the nipple discharge and milk using nanomagnetic beads combined with chemiluminescence immunoassay (CLIA). The findings from ductoscopy were documented and compared to the pathological results obtained after surgery. Nanomagnetic beads combined with CLIA can enhance the efficiency and stability of detection. CEA and CA125 levels increased in the group with breast lesions, and reached their highest levels in the group with malignant breast diseases. The positive prediction rates of CA153 and CEA in breast cancer were significantly higher than in the benign lesion group ( P < 0005). Univariate analysis showed that bloody nipple discharge or III ∼ IV breast duct lesions identified as high-risk factors associated with breast cancer. The sensitivity of endoscopy for diagnosing malignant lesions was 90.70%, while the sensitivity of CEA+ endoscopy was 95.35%. Ductoscopy has high sensitivity in the diagnosis of early occult breast cancer. The sensitivity and specificity of diagnosis could be significantly improved by combining tumor marker CEA expression with ductoscopy.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":"104 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135763674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Adsorption of NOx by graphene oxide loaded with CeO₂ as a catalyst for atmospheric pollution control 负载CeO2的氧化石墨烯对NOx的吸附及其在大气污染治理中的应用

4区材料科学

Materials Express Pub Date : 2023-11-01 DOI: 10.1166/mex.2023.2529

Fan Yang, Dongnan Li, Qiang Xia, Ziqi Qin, Lu Yu

{"title":"Adsorption of NOx by graphene oxide loaded with CeO2 as a catalyst for atmospheric pollution control","authors":"Fan Yang, Dongnan Li, Qiang Xia, Ziqi Qin, Lu Yu","doi":"10.1166/mex.2023.2529","DOIUrl":"https://doi.org/10.1166/mex.2023.2529","url":null,"abstract":"In this study, we utilized graphene oxide (GO) loaded with cerium oxide (CeO 2 ) to synthesize GO-CeO 2 catalysts using a hydrothermal method and high-temperature calcination. The performance of the catalyst was evaluated by characterization of the catalyst material and testing for nitrogen oxide (NOx) conversion rates and nitrogen gas adsorption isotherm in mixed flue gas. The results demonstrated that increasing the ratio of NO 2 in the NO+NO 2 mixture significantly enhanced the conversion rate of NOx. Notably, when the proportion of NO 2 reached 0.4, the denitrified gas displayed a remarkable increase in NOx conversion rate, exceeding 98%. This finding highlighted that even low concentrations of NO 2 can accelerate denitrification reactions. Moreover, increasing the oxygen concentration in the gas exhibited considerable potential to elevate the NOx conversion rate. The oxygen concentration played a vital role in the process of denitrification, and the GO-CeO 2 catalyst exhibited a high oxygen storage capacity. Moreover, the GO-CeO 2 catalyst maintained a high denitrification efficiency even under high-temperature conditions and demonstrated excellent NOx conversion performance. The catalyst also demonstrated good stability and strong water resistance under varying proportions and temperatures while maintaining a consistent denitrification efficiency. These findings indicated the significant adsorption effect of the graphene oxide loaded with CeO 2 catalyst on NOx, suggesting promising potential for application and widespread use.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":"105 5","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135763666","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on monitoring nucleic acid contamination in laboratory and its application 实验室核酸污染监测及其应用研究

4区材料科学

Materials Express Pub Date : 2023-11-01 DOI: 10.1166/mex.2023.2542

Yanyu Cai, Kaizhen Wen

{"title":"Study on monitoring nucleic acid contamination in laboratory and its application","authors":"Yanyu Cai, Kaizhen Wen","doi":"10.1166/mex.2023.2542","DOIUrl":"https://doi.org/10.1166/mex.2023.2542","url":null,"abstract":"Monitoring nucleic acid contamination in laboratories is essential for ensuring the accuracy and reliability of polymerase chain reaction (PCR) assay results. Compared to traditional chemical reagent-based extraction, magnetic bead extraction is a targeted adsorption method for extracting DNA, offering greater efficiency and minor hazard. However, the effectiveness of this method in detecting nucleic acid contaminations in laboratory remains unclear. This study aimed to develop a PCR-based laboratory environmental monitoring method to investigate the effectiveness of magnetic bead extraction for detecting nucleic acid contamination. To mimic nucleic acid contamination, Staphylococcus aureus was aerosolized in a PCR laboratory. Following sampling, nucleic acid extraction was performed using the magnetic bead extraction method. Samples were analyzed using quantitative real-time fluorescence PCR (qPCR), and the concordance between the magnetic bead extraction results and theoretical results was assessed. This study presents a PCR laboratory nucleic acid contamination monitoring protocol. The results demonstrated that the nucleic acid detection outcomes obtained using the magnetic bead extraction method were consistent with the theoretical results across all regions tested using this protocol. The magnetic bead extraction method demonstrated comparable detection outcomes to the theoretical results in monitoring laboratory environments. This approach provides a more efficient and environmental friendly method of monitoring the laboratory environment.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":"107 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135763790","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Vibration and noise reduction for building floor structures based on new composite material vibration isolation pads 基于新型复合材料隔振垫的建筑楼板结构减振降噪研究

4区材料科学

Materials Express Pub Date : 2023-11-01 DOI: 10.1166/mex.2023.2530

Li Zhang

引用次数: 0

The preparation of pre-alphacalcidol by high performance liquid chromatography 高效液相色谱法制备预α -骨化醇

4区材料科学

Materials Express Pub Date : 2023-11-01 DOI: 10.1166/mex.2023.2538

Yanchuan Qiu, Lian Ma, Hui Wang

{"title":"The preparation of pre-alphacalcidol by high performance liquid chromatography","authors":"Yanchuan Qiu, Lian Ma, Hui Wang","doi":"10.1166/mex.2023.2538","DOIUrl":"https://doi.org/10.1166/mex.2023.2538","url":null,"abstract":"Pre-alfacalcidol is an active substance, and the UV response of pre-alfacalcidol and alfacalcidol is different, there will be errors in the content determination process. The main reason is that pre-alfacalcidol is very unstable and easy to tautomerize with alfacalcidol at room temperature. Therefore, it is very necessary to control the content of pre-alfacalcidol and alfacalcidol when determining the content of alfacalcitol tablets. In order to fully study the quality of Alfacalcidol tablets, here, we reported a preparation method of pre-alfacalcidol. In this study, pre-alfacalcidol was prepared by directional degradation and purified by high performance liquid chromatography (HPLC) and its structure was identified by high resolution mass spectrometer (HRMS) and nuclear magnetic resonance (NMR). The preparation process is simple, and the cycle is short at a low cost with a high yield. The purity of pre-alfacalcidol is more than 95%, which can meet the requirements of standard products. At the same time, under the condition of high temperature preparation, the undamaged alfacalcidol can be collected and recovered, which greatly improves the availability and reduces the cost. In summary, this method has important significance to strictly control the quality of raw materials and preparations of alfacalcidol and improve the efficacy of alfacalcidol tablets.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":"107 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135763791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Low infrared emissivity epoxy resin/Ag composite coating with outstanding mechanical properties and saltwater resistance 低红外发射率环氧树脂/银复合涂层具有优异的机械性能和耐盐水性能

4区材料科学

Materials Express Pub Date : 2023-11-01 DOI: 10.1166/mex.2023.2534

Weigang Zhang, Yuping Lv, Dandan Lv, Lulu Pan, Ziti Sun

{"title":"Low infrared emissivity epoxy resin/Ag composite coating with outstanding mechanical properties and saltwater resistance","authors":"Weigang Zhang, Yuping Lv, Dandan Lv, Lulu Pan, Ziti Sun","doi":"10.1166/mex.2023.2534","DOIUrl":"https://doi.org/10.1166/mex.2023.2534","url":null,"abstract":"In this study, a low infrared emissivity coating with good mechanical properties and salt water resistance was prepared by the glass rod coating method, using epoxy resin, flake Ag powder, and graphene as a functional pigment, binder, and interface modifier, respectively. The study systematically investigated the impact of Ag powder particle size, as well as the addition of silver powder and graphene, on the coating properties. The larger particle size of the Ag powder led to a significant decrease in emissivity and enhancement of the mechanical properties of the coating. The coating had optimal emissivity and mechanical properties at an Ag particle size of 10 μ m. The emissivity and glossiness of the coating can be significantly reduced with the increase in added Ag powder, and the mechanical properties will be significantly improved. The increase in added graphene significantly reduced the glossiness and improved the flexibility of the coating. With a graphene content of 8 wt%, the coating has the best emissivity, glossiness, and mechanical properties at the same time. The epoxy resin/Ag composite coating, modified by graphene, showed good salt water resistance. After being corroded by salt water for 21 days, the emissivity, glossiness, adhesion strength, flexibility, and impact strength of the coating reached 0.535, 14.7, grade 1, 2 mm, and 50 kg · cm, respectively.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":"104 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135763671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Antioxidant, cytotoxicity, and anti-prostate carcinoma effects of CuO nanoparticles containing Thymus vulgaris 含寻常胸腺氧化铜纳米颗粒的抗氧化、细胞毒性和抗前列腺癌作用

4区材料科学

Materials Express Pub Date : 2023-11-01 DOI: 10.1166/mex.2023.2540

Bing Li, Yufeng Wang, Yukun Bian, Zhizhang Gao

引用次数: 0

Influence of SiO₂ nanoparticles and Fe₃O₄ solution on the consolidation of geological soft soil SiO2纳米颗粒与Fe3O4溶液对地质软土固结的影响

4区材料科学

Materials Express Pub Date : 2023-11-01 DOI: 10.1166/mex.2023.2548

Cong Yu, GuanJun Zhang, Yangzi Liu

{"title":"Influence of SiO2 nanoparticles and Fe3O4 solution on the consolidation of geological soft soil","authors":"Cong Yu, GuanJun Zhang, Yangzi Liu","doi":"10.1166/mex.2023.2548","DOIUrl":"https://doi.org/10.1166/mex.2023.2548","url":null,"abstract":"Soft soil is widely distributed in coastal areas and needs to be treated first when used as a foundation. A method of incorporating nano SiO 2 particles and nano Fe 3 O 4 solution is proposed to address the consolidation problem of geological soft soil. During the process, nanomaterials are selected and a preparation method for incorporating nanomaterial soil is designed. Subsequently, the experimental device is designed and the main instrument usage methods are specified, resulting in a complete experimental process design. The experimental results showed that in the generation of electron microscope images of soil, the soil mixed with nano SiO 2 particles or nano Fe 3 O 4 solution has a denser characterization; In the experiment of current variation in soil, the maximum current of the soil mixed with nano SiO 2 particles is 0.1052 A at 72 hours; In the soil drainage test, the maximum total drainage of the soil mixed with nano Fe 3 O 4 material at the end reached 1907 mL; In the soil pH value experiment, the pH value of the soil is higher when the proportion of nano SiO 2 material added is 3‰ and the proportion of nano Fe 3 O 4 material added is 2‰. The above results indicate that the geological soft soil consolidation method designed by the research institute incorporating nano SiO 2 materials or nano Fe 3 O 4 materials can effectively improve the drainage and mechanical properties of the soil.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":"105 10","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135763804","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0