Research on Optimized Design, Synthesis Mechanism, and Performance of Composite Dust Suppressant for Laterite in a Plateau.

Currently, a paucity of targeted dust suppressants exists for the management of laterite dust, and most of them lack sufficient resistance to the harsh conditions in the plateau areas, such as high temperatures, low rainfall, and wind erosion. To solve the problem, a new type of dust suppressant must be developed. Initially, xanthan gum was employed to enhance the viscosity and stability of guar gum. Subsequently, the synergistic mechanism between the reagents was considered, and the composition of the composite dust suppressant was selected as poly(acrylic acid), sodium dodecyl sulfate, guar gum, and xanthan gum by one- and two-factor methods. The dosage of each component was then determined via orthogonal experiments. To increase the suitability of the dust suppressant in high-temperature and low-humidity environments, hydroxypropyl methylcellulose was added to enhance the "film" effect. Both intuitive and polar analysis methods demonstrated that the composite dust suppressant was the optimal choice for controlling laterite dust emissions. The performance test experimental results show that the dust suppressant can fill the gap between particles well after spraying, the solidified layer formed is flat and smooth, and the moisture content of the sample was still above 9% after 72 h. The hardness of the consolidation layer can reach 42 HA, which can resist the destructive ability of external force; when the wind speed is 7 m/s, the mass loss rate stays below 0.63%, and the emission concentrations of PM2.5 and PM10 are 32 µg/m3 and 43 µg/m3, respectively, which is in line with the requirements of the emission standards. The dust suppressant components are all less toxic to plants, and the degradation rate can reach 57.84% in the sixth cycle, ensuring degradability and biocompatibility. The composite dust suppressant demonstrated superior performance to that of the two commercially available dust suppressants. It exhibited remarkable adaptability to harsh environments, effectively regulating construction site dust emissions and reducing particulate matter in the air.

[Efficacy analysis of 23 cases of parapharyngeal space tumors removed by oral approach assisted by plasma and high-definition endoscopic system].

Objective:To explore the selection, efficacy and application of indications for parapharyngeal space tumor resection assisted by plasma and HD endoscopic system through oral approach. Methods:The clinical data of 23 patients with parapharyngeal space tumor resection assisted by plasma and HD endoscopic system were retrospectively analyzed in Department of Otolaryngology Head and Neck Surgery, the First Affiliated Hospital of Bengbu Medical University from January 2013 to June 2023. All cases were examined by high-resolution CT and MRI before operation, and some cases were examined by CTA or DSA. During the operation, the high definition nasal endoscopic recording system was assisted, and low temperature plasma knife was used in some cases. The follow-up time was from 3 to 115 months, and the median follow-up time was 45 months. Results:There were no deaths in this group. All patients had complete tumor resection. The maximum tumor diameter was as follows: （5.20±1.00） cm, the operation time was（128.70±46.67） min, and the average blood loss was（80.87±32.74） mL. One case of vascular smooth muscle tumor had more bleeding during the operation and was assisted by tracheotomy after operation. One case of nourishing vascular bleeding after operation of giant Schwannoma was investigated and hemostasis + external carotid artery ligation. Bleeding in the remaining cases was below 120 mL. Postoperative pathologies were all benign tumors, including 11 pleomorphic adenoma, 4 schwannoma, 2 base cell adenoma, 1 epidermoid cyst, 1 lymphatic cyst with infection, 1 angiomyoma, 1 solitary fibroma, 1 salivary gland cyst, and 1 tendon giant cell tumor. All patients were followed up. One patient originating from vagal schwannoma had 2-month vocal cord paralysis and 1 recurrence（recurrence of the skull base of schwannoma）. Conclusion:Oral approach assisted by plasma and high-definition endoscopic system is suitable for partial selective resection of benign tumors in parapharyngeal space, which has the advantages of less trauma and rapid recovery. When the tumor is blood-rich, suspected to be malignant, the top of the tumor is deep into the cranial base nerve canal,located outside the internal carotid artery, and larger than 6.0 cm considering pleomorphic adenoma, it is recommended to conduct an external open or auxiliary cervical small incision approach.

Characteristics and statistical analysis of university accidents in China from 2017 to 2021.

University accidents in China are frequent, and to find out the relationship pattern of factors influencing accidents, 248 university accidents occurring within 2017-2021 were studied using difference analysis (Independent-samples T-test, Mann-Whitney U test), logistic regression analysis, and diagnostic analysis of receiver operating characteristic curves. The results show: The variability in time, space, and qualifications was statistically significant (p < 0.05), and when the number of university safety policies ≥77 would significantly reduce the frequency of university accidents, with an influence strength value of 0.884 and a diagnostic accuracy of 79.8 %. In addition, the perpetrators, the time and the location of the accidents were usually undergraduate students, first semester of university, and economically developed and educationally rich provinces, respectively, with influence strength value and diagnostic accuracy of greater than 1 and 70%, respectively. Finally, specific suggestions are offered for the future prevention and reduction of accidents at the University based on the findings of the studies.

Adverse events in lymphoma patients treated with phosphoinositide 3 kinase Inhibitor in clinical trials: a meta-analysis.

BACKGROUND: Malignant lymphomas are one of the most common cancers worldwide and with high biologic heterogeneity, while the phosphoinositide 3 kinase (PI3K)/mTOR pathway is crucial in maintaining cell growth and survival both in physiological and in pathological conditions (i.e., lymphoma). PI3K inhibitors have been proven to be effective in several subtypes of lymphomas. However, the high incidence of treatment-related adverse events as well as the special safety profile in PI3K inhibitors draws great attention. Thus, this meta-analysis was conducted to compare adverse events in PI3K inhibitors to conventional regimens in lymphoma patients. METHODS: Articles were retrieved from PubMed, Cochrane, and Embase to identify randomized controlled trials and phase III clinical trials that used PI3K inhibitors comparing with non-PI3K inhibitors in lymphoma patients. To achieve the appropriate results, we calculated the risk ratio and 95% confidence intervals. RESULTS: Four trials with 1399 patients that met our criteria were included. The PI3K inhibitors group significantly increased the risk of all-grade adverse events (AEs) (RR 0.95, 95% CI: 0.92-0.98) and high-grade AEs (RR 0.63, 95% CI: 0.57-0.70), compared with the non-PI3K inhibitors group. Besides, the incidence of neutropenia (RR 0.81, 95% CI: 0.74-0.90), pneumonia (RR 0.62, 95% CI: 0.46-0.83), and diarrhea (RR 0.40, 95% CI: 0.32-0.49) were significantly high in the PI3Ki group, while the incidence of anemia (RR 0.78, 95% CI: 0.50-1.20) and thrombocytopenia (RR 0.85, 95% CI: 0.51-1.42) had no statistic significant. CONCLUSION: PI3K inhibitors increased the risk of certain AEs in lymphoma patients.

Elevated Red Blood Cell Distribution Width Levels at Admission Predicts Depression After Acute Ischemic Stroke: A 3-Month Follow-Up Study.

Purpose: Red blood cell distribution width (RDW) is closely related to inflammatory-related disease markers. The present study aimed to investigate the association between the red blood cell distribution width (RDW) and post-stroke depression (PSD). Patients and Methods: A total of 414 patients with acute ischemic stroke (AIS) admitted to our hospital from June 2018 to July 2021 were consecutively enrolled and received 3 months' follow-up. According to the 17-item Hamilton Depression Scale (HAMD) assessment, they were divided into PSD group and non-PSD group. Diagnosis of PSD was made in accordance with DSM-IV. RDW was recorded within 24 hours of admission. Results: Among the included 414 patients, 95 (22.95%) patients were diagnosed as having PSD at 3 months after stroke. The results showed significantly higher level of RDW in patients with depression (13.69 (IQR13.24-13.88) vs. 13.56 (IQR 12.67-13.77), P<0.001) at admission than patients without depression. After adjustment for potential confounding factors, the odds ratio of PSD was 5.707 (95% CI, 2.717-11.989) for the highest tertile of RDW compared with the lowest tertile. Moreover, based on the receiver operating characteristic (ROC) curve, the optimal cutoff of RDW levels as an indicator for the prediction of PSD was projected as 13.01, which yielded a sensitivity of 83% and a specificity of 41.0%, with an area under the curve (AUC) of 0.643 (95% CI, 0.585-0.701; P = 0.012). Conclusion: Higher RDW levels at admission were found to be correlated with PSD 3 months after stroke.

LINC00240 knockdown inhibits nasopharyngeal carcinoma progress by targeting miR-26a-5p.

OBJECTIVE: This study intended to explore the regulatory functions of LINC00240 on nasopharyngeal carcinoma (NPC). METHODS: MiR-26a-5p inhibitor, mimic, and siLINC00240 were transfected into NPC cells. QRT-PCR was employed to assess miR-26a-5p and LINC00240 expressions. The targeting relationship of LINC00240 and miR-26a-5p was analyzed through dual luciferase reporter and RNA immunoprecipitation assay. Cell counting kit-8 assay, colony formation assay, flow cytometry assay, wound healing assay, Transwell assay and in vitro angiogenesis assay were adopted for the evaluation of the effects of LINC00240 or miR-26a-5p and LINC00240 on NPC cells regarding cell proliferation, apoptosis and cycle, migration, invasion, and angiogenesis. EZH2, cell cycle, and epithelial-mesenchymal transition (EMT)-related protein expression was tested through Western blot. RESULTS: LINC00240 had a high expression in NPC tissues and cell lines. Silenced LINC00240 significantly suppressed the 5-8F and HK1 cell proliferation, invasion, migration, and angiogenesis, but raised cell apoptosis, and cells were blocked in G0/G1 phase. MiR-26a-5p was a target of LINC00240. MiR-26a-5p upregulation suppressed the NPC cell proliferation, migration, invasion, angiogenesis, N-cadherin and EZH2 expression, while it elevated apoptosis and p21, p27 and E-cadherin expressions, whereas miR-26a-5p downregulation performed conversely. LINC00240 knockdown partially offset the effects of miR-26a-5p downregulation on cell proliferation, migration, invasion, angiogenesis, apoptosis, and EZH2. CONCLUSION: LINC00240 knockdown restrained cell proliferation, invasion, migration, and angiogenesis, while it advanced apoptosis via miR-26a-5p in NPC by EZH2 inhibition.