Materials Express最新文献

{"title":"Nanocarbon tracer applied to explore the relationship between the number of exposed parathyroid glands and parathyroid function","authors":"Guofa Wu, Haijie Huang, Zhongdaoyuan Ren, Xiaowei Pan, Lanlan Xie","doi":"10.1166/mex.2024.2692","DOIUrl":"https://doi.org/10.1166/mex.2024.2692","url":null,"abstract":"After nanocarbon tracer was applied to thyroidectomy, we aimed to investigate the risk factors of hypoparathyroidism and the relationship between the number of exposed parathyroid glands and parathyroid function. This study retrospectively collected clinical data of patients who underwent\u0000 thyroidectomy at Haining People’s Hospital from January 2019 to December 2022. Levels of parathyroid hormone (PTH) and blood calcium were observed before surgery, 1 day after surgery, and one month after surgery to assess the occurrence of postoperative parathyroid hypofunction. Patients\u0000 were grouped based on their postoperative PTH levels. Furthermore, basic patient data and surgical data were collected to analyze the risk factors associated with hypoparathyroidism after thyroidectomy using single factor analysis. ANOVA analysis was used to compare the correlation between\u0000 intraoperative parathyroid exposure and postoperative PTH and blood calcium levels. This study involved 80 patients. On the first day after surgery, the serum PTH and blood calcium levels of patients decreased, and 59 patients (73.75%) had normal serum PTH level after surgery, which was the\u0000 normal group. Twenty-one patients (26.25%) developed hypoparathyroidism after operation and were divided into hypoparathyroidism group. Single factor analysis showed that the main risk factors of postoperative hypoparathyroidism were lesion location, lymph node dissection, nano carbon, number\u0000 of lymph node metastasis, intraoperative parathyroid exposure, and inaccurate parathyroidectomy. ANOVA analysis showed that the more parathyroid exposure during operation was accompanied by the more decrease of serum PTH and blood calcium levels after operation. Therefore, the location of\u0000 thyroid lesions, lymph node dissection, nano-carbon, number of lymph node metastases, intraoperative parathyroid exposure, and parathyroidectomy are risk factors for transient hypoparathyroidism after thyroid surgery. Moreover, intraoperative parathyroid exposure significantly affected serum\u0000 PTH and blood calcium levels. Performing more accurate thyroidectomy and reducing parathyroid exposure help reduce the occurrence of postoperative hypoparathyroidism and hypocalcemia.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141232321","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}

{"title":"Effect of solution temperature on the microstructure and properties of ceramic coating on the surface of 2024 aluminum alloy","authors":"Jianjun Yang, Jiahu Wang, Caihe Fan, Qin Wu, Yang Yang, Deng Luo, Ming Fan, Ling Ou, Luowei Chen, Zeyi Hu, Zaiyu Zhang","doi":"10.1166/mex.2024.2706","DOIUrl":"https://doi.org/10.1166/mex.2024.2706","url":null,"abstract":"This study investigates the influence of the 2024 aluminum alloy was treated with solution before ceramic treatment on the microstructure and characteristics of ceramic coatings applied to 2024 aluminum alloy substrates. The microhardness, corrosion resistance, and microstructural properties\u0000 of these ceramic coatings were assessed using a microhardness tester, an electrochemical workstation, and a scanning electron microscope. The findings indicate that pre-treatment involving solution treatment significantly enhances the hardness and corrosion resistance of 2024 aluminum alloy\u0000 ceramic coatings. Notably, when the solution temperature was maintained at 460 °C, the most rapid decrease in current density was observed during the ceramization process, resulting in the attainment of the lowest final stable current density. This particular condition yielded ceramic\u0000 coatings with optimal hardness and corrosion resistance, with hardness exhibiting a remarkable increase of 48.9 HV, self-corrosion potential rising by 0.207 V, and polarization resistance surging by 5310.7 Ω. Moreover, the surface of the ceramic coating displayed remarkable smoothness\u0000 and was devoid of discernible defects such as cracks or looseness. In light of these findings, it can be concluded that the optimum solution temperature for achieving these desirable properties is 460 °C. This conclusion is derived from a comprehensive analysis encompassing both the morphology\u0000 and corrosion resistance of ceramic coatings.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141229614","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}

{"title":"The change of physical properties of calcium carbonate nanomaterials cured soil in road substrates","authors":"Guoying Guo, Xin Li, Wenjun Guo, Ling Yang, Wei Wang","doi":"10.1166/mex.2024.2668","DOIUrl":"https://doi.org/10.1166/mex.2024.2668","url":null,"abstract":"The utilization of appropriate materials to enhance road subgrade’s physical characteristics is crucial for current transportation construction and maintenance. This study proposes a curing method that employs calcium carbonate nanomaterials to address the problem of soil displacement\u0000 and settlement in roadway subgrades. A method was developed during the study to explore the optimal curing material ratio. Additionally, this study developed a method for testing and analyzing the mechanical properties of soils cured with nanomaterials, including measures of tensile stress,\u0000 triaxial shear stress, and Moore’s damage envelope. The study demonstrated that the unconfined compressive strength of the soil treated with calcium carbonate nanomaterials was 0.40 MPa after 7 days of curing with a 6% doping of the curing agent. Increasing the doping to 18% resulted\u0000 in a breaking load of the soil reaching 0.100 kN. Furthermore, the triaxial shear stress–strain curve of the soil exhibited a slope of 264.47 during the linear phase when the curing agent was dosed at 6%. The slope of the linear phase of the stress–strain curve for triaxial shear\u0000 at 6% curing agent doping was found to be 264.47. The cured soil molar pack line exhibited an internal friction angle of 22.66 degrees at the same curing agent dosage. The displacement analysis of the replacement roadbed with cured soil revealed a maximum observed displacement of only 377\u0000 mm after filling the embankment using the study method. The experimental results provide support for the hypothesis of the study, which suggests that the application of calcium carbonate nanoparticles can significantly enhance the physical characteristics of road subgrade.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141232113","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}

{"title":"Anti-seepage performance and underlying mechanism of carboxymethyl cellulose sodium-modified bentonite in hydraulic engineering applications","authors":"Mingshuan Zhu, Shien Li, Yixiong Zhang","doi":"10.1166/mex.2024.2699","DOIUrl":"https://doi.org/10.1166/mex.2024.2699","url":null,"abstract":"Bentonite is widely utilized in hydraulic engineering projects. However, its performance may deteriorate under extreme environmental conditions. Hence, we aim to develop a sodium carboxymethyl cellulose (CMC)-modified bentonite and investigate its anti-seepage performance. The results\u0000 showed that the 10% CMC-modified bentonite exhibited the best performance. Compared with unmodified bentonite, the expansion index of 10% CMC-modified bentonite significantly increased to 40 mL/2 g, indicating a high water absorption capacity and expansion property. Moreover, it showed a significant\u0000 decrease in permeability coefficient (3.72×10−11 m/s) and an increase in porosity (1.90), indicating its excellent anti-seepage effect. Furthermore, under unconventional environmental conditions and long-term performance tests, the 10% CMC-modified bentonite shows improved\u0000 stability compared to the unmodified bentonite. Therefore, it can be concluded that this study provides support for the utilization of CMC-modified bentonite in anti-seepage engineering and hydraulic engineering applications.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141233453","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}

{"title":"Innovative antibacterial and antifungal coating films of chitosan/nano zinc oxide/essential oil on grape preservation","authors":"Areej Suliman Al-Meshal, Fadi Baakdah, M. Helal, R. Sami, Nimah Alnemari, Sarah Alharthi, Suzan A. Abushal, Ruqaiah I. Bedaiwi, Zeyad M. Alharbi, Tahani Y. A. Asseri, Fatmah M. Alqahtani, Awatif M. Almehmadi, E. Noorwali","doi":"10.1166/mex.2024.2693","DOIUrl":"https://doi.org/10.1166/mex.2024.2693","url":null,"abstract":"The effects of some innovative antibacterial and antifungal coating films of chitosan/nano zinc oxide/essential oil (C-ZNO-EO) on grape preservation for human health were studied during the storage periods on (0, 4, 7, 14, and 16) days. Several evaluation approaches were evaluated such\u0000 as the bacterial evaluations against the presence of the mesophilic aerobic bacteria. The polyamines evaluation was studied by thin-layer chromatography (TLC) for putrescine and spermidine. Soluble sugars were detected by high-performance liquid chromatography (HPLC) for fructose, glucose,\u0000 and sucrose. Iron, zinc, and manganese were absorbed by the spectrum spectrophotometer. The antifungal properties have been examined against Botryis cineraa, Aspergillus niger, and Tubingensis. The results reported that the highest mesophilic aerobic bacteria (4.73\u0000 Log CFU g−1) was recorded in the control grapes on the 16th day, whereas the lowest level (2.05 Log CFU g−1) was recorded for C-ZNO-EO. The polyamines ranged from 12.18 nmol g−1 FW to 10.1 nmol g−1 FW, and\u0000 from 21.35 nmol g−1 FW to 16 nmol g−1 FW for putrescine and spermidine during the storage periods, respectively. The grapes treated with C-ZNO-EO achieved the maximum increase in glucose and fructose contents (40.61 and 30.05 μmol/g FW), while grapes\u0000 treated with chitosan/nano zinc oxide (C-ZNO) achieved the maximum increase in sucrose (0.982 μmol/g FW) compared with chitosan (C) and control treatments at the end of the storage periods, respectively. Using C-NZO-EO treatment had a positive effect on the mineral compositions and\u0000 the antifungal against Botryis cineraa, Aspergillus niger, and Tubingensis. The innovative antibacterial and antifungal coating film by C-NZO-EO was the best treatment for grape preservation.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141230791","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}

{"title":"Monitoring bridge bearings based on rubber-based composite materials","authors":"Yejun Zhou, Shengli Zhang, Xiujuan Liu, Jun Yang","doi":"10.1166/mex.2024.2697","DOIUrl":"https://doi.org/10.1166/mex.2024.2697","url":null,"abstract":"To improve the real-time monitoring capability of bridge structure safety, intelligent bridge bearings were prepared based on rubber based composite materials. The study selected T4/3-5 intelligent rubber bearings and conducted a systematic experimental analysis on their response characteristics\u0000 under different loading speeds and holding states. By measuring the displacement and resistance changes of the intelligent bearings under various load conditions, their sensitivity and stability were evaluated. These experiments confirmed that the T4/3-5 intelligent rubber bearings exhibited\u0000 a total creep deformation of approximately 1 mm and 1.5 mm under loads of 60 kN and 45 kN, respectively. This suggests that the molecular chains reach a relatively stable configuration under high loads and are not prone to further changes. Moreover, the resistance reduction ratio under a load\u0000 of 60 kN is approximately 0.57, while under a load of 45 kN it is approximately 0.62, indicating that nickel powder particles in the composite material form a more stable conductive network after molecular rearrangement. At different loading rates, the displacement-load and load-resistance\u0000 curves of the bearings show consistent trends, and the creep and resistance relaxation behaviors exhibit certain regularity with the concentration of load size. Through the analysis of these data, the study elucidated the resistance change mechanism in the bearings and validated the feasibility\u0000 of intelligent bearings as a real-time load monitoring tool.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141229631","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}

{"title":"Pachyman alleviates cognitive impairment after sevoflurane anesthesia in gastric cancer surgery","authors":"Licheng Zhang, Liang Fang, Yu Huang","doi":"10.1166/mex.2024.2686","DOIUrl":"https://doi.org/10.1166/mex.2024.2686","url":null,"abstract":"Cancer cell metastasis has already taken place in most of the gastric cancer (GC) patients when diagnosed. Despite that surgery effectively delays the development of GC, sevoflurane anesthetic during surgery tends to cause cognitive impairment. Previous studies have depicted anti-tumor\u0000 and neuroprotective effects of pachyman. Therefore, this study aimed at investigating a potential mechanism whereby pachyman alleviates cognitive impairment after sevoflurane anesthesia in GC surgery. A rat model of GC was constructed and received treatment with pachyman at different concentrations\u0000 and caspase-3 inhibitor and agonist. After treatment, the level of inflammatory factors was detected by ELISA. Flow cytometer and Morris water maze were conducted to assess cell death and cognitive function, followed by HE gastric histopathological staining. In addition, RT-qPCR and Western\u0000 blot detected GSH-PX and caspase-3 expression. Pachyman positively induced the apoptosis of GC cells and strengthened the cognitive function of rats with downregulated caspase-3. Moreover, caspase-3 inhibitor also accelerated apoptosis and improved rat cognitive function. When caspase-3 was\u0000 inhibited, the level of GSH-PX was elevated. Combination of pachyman and caspase-3 inhibitor more significantly induced GC cell apoptosis and alleviated cognitive impairment. Pachyman alleviates the cognitive impairment caused by sevoflurane anesthesia in GC rats and induces tumor cell apoptosis\u0000 through down-regulation of caspase-3 and up-regulation of GSH-PX.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141235493","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}

{"title":"A retrospective comparison of endoscopic nasobiliary drainage (ENBD) and endoscopic retrograde biliary drainage (ERBD) in the treatment of acute cholangitis","authors":"Rui Li, Chengchen Xu, Menglu Zhao, Jian Zhang, Shiyi Sun, Bing Li, Yinghai Xie","doi":"10.1166/mex.2024.2667","DOIUrl":"https://doi.org/10.1166/mex.2024.2667","url":null,"abstract":"Endoscopic nasobiliary drainage (ENBD) and endoscopic retrograde biliary drainage (ERBD) can rapidly alleviate obstruction, facilitate bile drainage, and reduce pressure in the bile duct. In this study, to evaluate the effect of plastic biliary stent on the recurrence rate of choledocholithiasis\u0000 in patients with actual cholangitis after endoscopic retrograde cholangioangiography (ERCP), we a comparative analysis of the efficacy and safety between ENBD and ERBD in inflammatory remission rate, complication rate, and success rate of secondary or multiple endoscopic lithotomy. A total\u0000 of 347 patients undergoing ENBD and ERBD were enrolled in this retrospective study. Preoperative assessments including blood tests, electrocardiography, abdominal ultrasonography, CT scans, MRI, or MRCP were conducted on all participants. Additionally, serum CRP and amylase levels were measured\u0000 using a magnetic nanobead-based immunoassay. We found that The success rate of stone removal in the ENBD group was higher than that in the ERBD group (90.8% vs. 72.7%) (P <0.0001). The remission rate of inflammation in the ERBD group (100.0%) was higher than that in the ENBD group\u0000 (98.7%) (P >0.05). No significant difference was observed between the ERBD group and the ENBD group in preoperative and postoperative inflammatory indexes (total bilirubin, direct bilirubin, white blood cells, neutrophils, CRP, and serum amylase). Moreover, there were significant\u0000 differences in post-ERCP pancreatitis between the ERBD group and ENBD group. These results suggest that both ENBD and ERBD can effectively improve clinical efficacy. Moreover, magnetic nanobeads have good application in serum index detection to increase detection efficiency.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141234250","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}

{"title":"Application of nano-insoles on functional recovery in early postoperative period in intertrochanteric femur fractures","authors":"Xuexue Xu, Chongxue Zhu, Ya Zhu, Yumei Chen, Liya Jin","doi":"10.1166/mex.2024.2702","DOIUrl":"https://doi.org/10.1166/mex.2024.2702","url":null,"abstract":"This study investigates the effect of integrating family empowerment programs with the application of nanoinsoles on functional recovery in the early postoperative period in elderly patients with intertrochanteric femur fractures (IFF). A total of 100 elderly patients with IFF, who\u0000 underwent internal fixation and were admitted to our hospital from November 2020 to October 2021, were selected and divided into an observation group (n = 50) and a control group (n = 50). The control group mainly received perioperative routine health-care education. The observation\u0000 group received a family empowerment program and used nano-insoles prepared by carbon nanotube/silicone rubber composites during the perioperative period and before discharge. After postoperative follow-up, the care readiness of the main caregivers and hospitalization time were compared in\u0000 the two groups. The scores of activities of daily living (ADL), Harris Hip Function Scale (HHS), Hospital Anxiety and Depression Scale (HADS), quality of life, satisfaction with care, and complications were recorded. The results demonstrated that the observation group exhibited significantly\u0000 higher care readiness, nursing satisfaction rates, HHS, and ADL scores, as well as reduced hospitalization time and HADS scores compared to the control group. After 3 months post-surgery, the quality of life in the observation group was significantly superior to that of the control group.\u0000 The incidence of complications in the observation group (8%) was significantly lower than that in the control group (24%). In conclusion, the family empowerment programs combined with the application of nano-insoles on patients with IFF can effectively improve postoperative functional recovery.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141232442","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}

{"title":"Finite element stress analysis of nano copper-based anti-friction coating for improved threaded connections in petroleum drilling tools","authors":"Hongbo Lan, Yulin Zhang, Guanqi Zhang, Zechao Wang, Bo Li","doi":"10.1166/mex.2024.2698","DOIUrl":"https://doi.org/10.1166/mex.2024.2698","url":null,"abstract":"Threaded connections are commonly used in connecting petroleum drilling tools (PDTs). In this study, we use nano copper (NaCU) and epoxy-resin binder to prepare a NaCU-based anti-friction coating (NaCU-AFC). Furthermore, we use finite element analysis (FEA) to validate torque and pressure\u0000 distribution on the contact tooth surface of threaded joints of PDTs. The results demonstrate that the NaCU-AFC can effectively reduce torque by 35.66%, and significantly improve anti-sticking performance, thereby extending the service life of PDTs. In summary, this study provides valuable\u0000 insights for practical applications in coating processes for PDTs.","PeriodicalId":18318,"journal":{"name":"Materials Express","volume":null,"pages":null},"PeriodicalIF":0.7,"publicationDate":"2024-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141231214","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}