Search

采用层次分析法（AHP）对光纤传输网安全问题进行定性和定量的分析,结合实际建立光纤传输网安全评估体系,利用AHP分析软件Expert Choice完成了AHP的计算与分析,以期有助于全方位地对光纤传输网安全进行评估,分析各安全威胁因素,以加强传输网的安全管理。

【目的】研究Q 开关Nd:YAG 1 064 nm 和532 nm 波长激光照射对豚鼠血液流变性的影响, 了解所产生的生物 学效应。【方法】波长为1 064 nm 和532 nm 各自3 种不同剂量的激光体外照射豚鼠。测定豚鼠血液黏度等6 项血液流变学 指标。【结果】波长1 064 nm 的两种大剂量和波长532 nm 的最大剂量Q 开关Nd :YAG 激光体外照射豚鼠使高、中、低切变率 下的全血黏度和血浆黏度升高, 红细胞变形指数下降和聚集指数升高, 其余3 种剂量的激光体外照射对血液流变性无显著改 变。【结论】1 064 nm 波长的Q 开关Nd :YAG 激光照射在一定剂量下可以改变血液流变性, 选择合适的剂量可将血液流变性 的影响降至最低。

Objective: This study aims to construct pcDNA3.1-6 x HIS-mSELENBP2 recombinant plasmid and explore the interaction between SELENBP2 and FKBP38 proteins. Methods: Firstly, total RNA from mouse liver tissue was isolated as a template and designed the primers according to the CDS sequence of the mouse SELENBP2 gene to synthesize the SELENBP2 protein coding sequence through RT-PCR. The SELENBP2 gene sequence was recycled by restriction endonuclease and connected by ligase with pcDNA3.1-6x HIS plasmid vector, and then transformed into a JM108 competent Escherichia coli for amplification. After selecting positive monoclonal E. coli and extracting plasmids, the pcDNA3.1-6 x HIS-mSELENBP2 recombinant plasmid was obtained using genetic engineering technology. Then, after sequencing analysis and identification, the recombinant plasmid was transfected into AML12 cells using Lipofectamine 3000 transfection reagent and cultured for 30 h to detect protein expression using Western blot analysis. Using AlphaFold Multimer to predict the possibility of interaction between SELENBP2 and FKBP38 proteins, as well as the possible domains of interaction. Finally, the recombinant plasmid was transferred into AML12 cells which over expressed FKBP38 protein and after 30 h of cultivation, cell protein samples were collected for immunoprecipitation test. Results: The sequence analysis results of pcDNA3.1-6x HIS-mSELENBP2 recombinant plasmid showed that the inserted SELENBP2 protein coding sequence was in accordance with the expected sequence as the CDS sequence of the mouse SELENBP2 gene in GenBank report. After transfection of pcDNA3.1-6 x HIS-mSELENBP2 recombinant plasmid into AML12 cells, the SELENBP2 HIS fusion protein can be effectively expressed. The results of AlphaFold Multimer showed that the possibility of interaction between SELENBP2 and FKBP38 proteins is high, and it acted on the TPR domain of FKBP38 protein. There is an interaction between the SELENBP2 protein and the FKBP38 protein in AML12 cells according to the co-immunoprecipitation experiment. Conclusions: The pcDNA3.1-6×HIS-mSELENBP2 recombinant plasmid has been successfully constructed and can be correctly expressed in AML12 cells, laying the foundation for further research on the function of the SENELBP2 protein. The interaction between SELENBP2 and FKBP38 proteins further broadens the thinking of the study of SELENBP2 protein and provides a new direction for the further studying of the biological function of SELENBP2 protein in the liver. [ABSTRACT FROM AUTHOR]

Objective To investigate the effects of disulfiram (DSF) combined with Cu2+ on the proliferation, migration and invasion of hepatoma Hep3B cells and the underlying mechanism. Methods Hepatoma Hep3B cells were cultured in vitro. DSF (30 nmol/L) solution, Cu2+ (1 μmol/L) solution and copper chelating agent ammonium tetrathiomolybdate Ⅵ (ATTM) (30 nmol/L) solution were used individually or combinedly for intervention. The cells treated with dimethyl sulfoxide (DMSO) (30 nmol/ L) were used as the control group. CCK-8, scratch test and Transwell cell test were used to detect the proliferation, migration and invasion ability of cells. The expression of copper death related proteins dihydrolipoamide S-acetyltransferase (DLAT) and ferredoxin 1 (FDX1) were detected by immunofluorescence assay. Results Compared with the control group, the proliferation, migration and invasion ability of Hep3B cells were significantly decreased after DSF or Cu2+ or DSF+Cu2+ combined intervention (all P<0.05), and the decrease was more significant in DSF+Cu2+ combined intervention (all P<0.0001). After addition of DSF combined with Cu2+ to ATTM, the inhibitory effects of DSF combined with Cu2+ on the proliferation, migration and invasion of Hep3B cells were reversed, and the proliferation, migration and invasion ability cells were enhanced compared with DSF+Cu2+ group (all P<0.05). Compared with the control group, the fluorescence intensity of copper death related proteins DLAT and FDX1 showed no significant increase after DSF or Cu2+ intervention, but the fluorescence intensity of DLAT protein increased while that of FDX1 protein decreased after DSF +Cu2+ combined intervention, and the expression trend of DLAT and FDX1 proteins was reversed after the addition of ATTM. Conclusions DSF combined with Cu2+ can inhibit the proliferation, migration and invasion of Hep3B cells, probably through the induction of cuproptosis. [ABSTRACT FROM AUTHOR]

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Given the widely use of acupuncture in clinical settings, more efforts should be paid on the infection control and management strategies in Acupuncture and Physiotherapy Department of the Traditional Chinese Medicine institution. This paper analyzed the potential risks of nosocomial infection, infection control and management strategies, and provided reference for the standardization of infection control in relevant departments. (针灸疗法在临床应用广泛, 针灸理疗科是医院感染管理的重点科室。本文从针灸理疗科的感染隐患、控制与管理策略等方面进行总结, 以期为进一步规范相关科室的感染防控提供可靠参考。)

Copyright of Iron Steel Vanadium Titanium is the property of Iron Steel Vanadium Titanium Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Modern Medicine & Health is the property of Journal of Modern Medicine & Health and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Hubei Open Vocational College is the property of Journal of Hubei Open Vocational College Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Asthenozoospermia, a condition observed in 40% of infertile males, is characterized by reshiced sperm mastility. MicroRNAs (miRNAs) play a pivotal role in spermatogenesis, yet their involvement in asthenozoospermia remains poorly understood. This study aims to elucidate the molecular mechanisms of miRNAs in asthenospermia. Method (): Sperm samples wer collected from individuals with severe asthenozoospermia and healthy males. High-throughput sequencing was employed to identify differentially expressed miRNAs., followed by bioinformatics analysis of these significant miRNAs. The ahered expression of two specific miRNAs and their target genes was confirmed using qRT-PCR. Rasult(): When comparing severe asthenozoospermia patients to healthy males, 146 miRNAs exhibited significam alterations (0.05; log2 Fold Change>1), with 52 upregulated and 94 downregulated miRNAs. The ten most significantly upregidated and downregulated miRNAs were subjected to target gene prediction through the miRDB and TargetScan databases, a total of 1407 target genes were found to be supported by both databases. Enrichment analysis revealed that miRNA target genes were enriched in sperm cell processes, and they wem involved in oxidative metabolism, stimadus response, proliferation, differentiation, and apoptosis in sperm cells. Pathway analysis indicated that target genes might participate in processes such as autophagy, cellular senescence, the PIK-Akt signaling pathway, the MAPK signaling pathway, the HIF-1 signaling pathway, and the mTOR signaling pathway Notably, ansing the specifically upwegıdated miRNAs in ast henazoospermia, haa-miR-371-5p-and haa-miR-2355-5p were identified, with their respective target genes being the autophagy effector protein Berlin! and matochondrial inner membrane protein prohibain2 (PHB2), both directly involved in mutochondrial autophagy. qRT-PCR results demonstrated an increused expression of haa-mik-371a-5p and hsa-miR-2355-5p in sperm as motility declined. Conclusion(s): This study identified miRNAs with specific dysregulation in the sperm of asthenozoospermia patients and their target genes, offering new insights and a theoretical basis for further investigation into the mechanisms by which miRNAs regulate mitochondrial autophagic functions inlow motility sperm. [ABSTRACT FROM AUTHOR]

Copyright of Architectural Journal / Jian Zhu Xue Bao is the property of Architectural Journal Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective To explore the characteristics and diagnostic significance of ultrasound signs in the diagnosis of acute appendicitis in children. Methods This study focused on 81 children with acute appendicitis and divided them into two groups based on pathological examination results: 34 children with severe progressive appendicitis (41.98%) and 47 children with simple appendicitis (58.02%). By analyzing the indirect and direct signs of ultrasound detection, as well as pathological examination data, and using ROC curve analysis to analyze the area under the curve ( area under curve, AUC) of ultrasound signs combined, a comprehensive analysis is conducted to score the ultrasound examination results of children. Results The detection rates of wall continuity interruption/low-level clarity, intraluminal fluid accumulation, periappendiceal or abdominal fluid accumulation, periappendiceal hyperechogenicity, cecal and ileal wall thickening in the advanced group were higher than those in the simple group (P < 0.05); The scores of indirect, direct, and combined ultrasound signs in the progressive group were higher than those in the simple group (P < 0.05); Under the ROC curve, the sensitivity, specificity, positive predictive value, and negative predictive value of combined signs were 98.77%, 97.53%, 98.77%, and 96.30%, respectively, higher than those of indirect signs and direct signs. The AUC was 0.835, higher than those of indirect signs and direct signs ( P < 0.05) . Conclusion The combined diagnosis of ultrasound examination signs can provide objective evidence for the early diagnosis of acute appendicitis in children, and can also achieve dynamic monitoring of the disease, which is conducive to the formulation of clinical treatment plans. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Hubei Open Vocational College is the property of Journal of Hubei Open Vocational College Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Agro-Environment Science is the property of Journal of Agro-Environment Science Editorial Board and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Iron Steel Vanadium Titanium is the property of Iron Steel Vanadium Titanium Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Osteoporosis is the property of Chinese Journal of Osteoporosis and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

【Objective】The effect of exogenous methyl jasmonate on resistance to bacterial leaf stripe (BLS) was studied, which would provide a theoretical basis for the prevention and control of BLS in rice.【Method】With rice BLSresistant and susceptible near isogenic lines (K9 and G9) as materials, 0.1 mmol/L methyl jasmonate (MeJA) were sprayed on BLS-resistant and susceptible near isogenic lines (K9 and G9) plants respectively at tillering stage, and water spraying was used as control (CK). The inoculation with Xanthomonas oryzae pv. Oryzicola (Xoc) were conducted at 0, 12, 24, 48, 72 h after MeJA treatment, then the symptoms of BLS were investigated. In K9 and G9 plants sprayed with MeJA for 48 h then inoculated with Xoc, the expression changes of hormone-pathway related genes were further analyzed at 0, 6, 12, 24 and 48 h after inoculation.【Result】In K9 plants, the lesion lengths of leaves inoculated at 0, 24, 48, 72h after being sprayed with MeJA were significantly shorter than those in CK; in G9 plants, the lesion lengths of leaves inoculated at 0 h and 12 h after being sprayed with MeJA were significantly longer than those in CK, while inoculated at 72 h after being sprayed with MeJA were significantly shorter than those in CK. Compared with the CK, relative expression levels of jasmonate-pathway related genes LOX2 and AOS2, and pathogenesis-related gene PR10 were upregulated, while relative expression levels of alicylic acidpathway related genes PAD4 and PAL, ethylene-pathway related genes EIN2 and ERF70, and pathogenesis-related gene PR1a were downregulated in K9 plants inoculated at 48h after being sprayed with MeJA; relative expression levels of jasmonatepathway related genes LOX2 and AOS2, salicylic acid-pathway related genes PAD4 and PAL and pathogenesis-related genes PR1a and PR10 were upregulated, while relative expression level of ethylene-pathway related gene EIN2 was downregulated in G9 plants inoculated at 48h after being sprayed with MeJA.【Conclusion】Exogenous MeJA affects the BLS-resistance in rice resistant and susceptible near isogenic lines. The resistance responses of resistant and susceptible near isogenic lines to Xoc are different at different inoculation time points after MeJA treatment. Exogenous MeJA involves in the defense response to Xoc infection by inducing the expression changes of jasmonate, salicylic acid and ethylene pathway-related genes and pathogenesisrelated genes. [ABSTRACT FROM AUTHOR]

Copyright of Machine Tool & Hydraulics is the property of Guangzhou Mechanical Engineering Research Institute (GMERI) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Tea Science is the property of Journal of Tea Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Clinical Nursing in Practice is the property of Journal of Clinical Nursing in Practice (Editorial Board, Shanghai Jiao Tong University Press) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Chongqing University of Technology (Natural Science) is the property of Chongqing University of Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Molecular Science is the property of Journal of Molecular Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Laser Biology / Acta Laser Biology Sinica is the property of Acta Laser Biology Sinica Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Advanced Textile Technology is the property of Zhejiang Sci-Tech University Magazines and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective: To evaluate the efficacy and safety of holmium laser enucleation of prostate (HoLEP) by using en -bloc and bladder neck preservation technique and assess the influence on sexual functional outcomes. Methods: Retrospectively analyzed 209 patients who received HoLEP by en-bloc and bladder neck preservation technique from July 2016 to May 2020, and other 78 patients who received traditional transurethral resection of the prostate (TURP) as control. All patients had sexual activity and normal antegrade ejaculation before surgery. Results: The operation time and estimated blood loss in HoLEP group were less than those in the TURP group (P ˂ 0.05)；The hospital stay and duration of catheterization in HoLEP group were slightly shorter than those in TURP group, but no significant (P ＞ 0.05). There was no significant difference in complications between the two groups (P ＞ 0.05). The immediate urinary incontinence rate in HoLEP group was significantly higher than that in TURP group (P ˂ 0.05). This trend was still manifested at 3 and 6 months, but gradually narrowed and converged at 12 months (P ＞ 0.05). The international questionnaire score (IIEF-5) and erection hardness grading scale (EHGS) scores in both groups at 6 and 12 months after surgery were slightly improved (P ＞ 0.05).There was no statistical difference in IIEF-5 and EHGS between the two groups before and 12 months after surgery (P ＞ 0.05), and IIEF -5 and EHGS in HoLEP group at 12 months after surgery were higher than those in TURP group, but the difference was not statistically significant (P ＞ 0.05). The incidence of retrograde ejaculation in HoLEP group was significantly lower than in the TURP group (P ˂ 0.05). Conclusions: HoLEP by an en - bloc and bladder neck preservation technique is small-injury and high -efficiency, especially reduce the occurrence of retrograde ejaculation. [ABSTRACT FROM AUTHOR]

Objective To evaluate the value of the systemic immune-inflammatory index (SII), CEA, Cyfra21-1, and NSE in predicting and diagnosing bone metastasis of lung cancer. Methods The clinical data of 618 patients with lung cancer were retrospectively analyzed. According to the bone metastasis at baseline, the data of the diagnosis group (patients with bone metastasis at baseline and patients without bone metastasis during follow-up) and the prediction group (patients with bone metastasis during follow-up and patients without bone metastasis during follow-up) were analyzed to determine the correlation between the above indicators and lung cancer bone metastasis. Results Predictive group: SII≥850 and NSE≥58.64 ng/ ml were independent risk factors and independent predictors for lung cancer bone metastasis. The AUC of the combined SII+NSE model was 0.662, with a sensitivity of 54.5% and a specificity of 74.5%; it was superior to the predictive value of single factor (95%CI: 0.596-0.728; P<0.001). Diagnostic group: lung adenocarcinoma, SII≥951.6, CEA≥5.14 ng/ml, NSE≥20.15 ng/ml, and Cyfra21-1≥3.94 ng/ml were independent risk factors for bone metastasis in lung cancer patients (P<0.05). The AUC of SII alone in the diagnosis of lung cancer bone metastasis was 0.754. The AUC of the SII+Cyfra21-1 combined model was 0.82 which was the largest, with a sensitivity of 74% and a specificity of 78.5%; it was superior to any univariate AUC (P<0.05). Conclusion The levels of SII, CEA, Cyfra21-1, and NSE in the bone metastasis group are significantly higher than those in the non-bone metastasis group. The predictive and diabnostic values would be improved further when SII combined with other single risk factors. [ABSTRACT FROM AUTHOR]

Copyright of Advanced Engineering Science / Gongcheng Kexue Yu Jishu is the property of Advanced Engineering Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of China Pulp & Paper is the property of China Pulp & Paper Magazines Publisher and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Modern Medicine & Health is the property of Journal of Modern Medicine & Health and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Porous SiC ceramics with different mass fractions of Y2O3 （0%， 2%， 4%， 6%） were prepared by micro-oxidation sintering. The crystal structure， micro morphology， physical properties and metal Cd removal rate of the ceramic were characterized. The second phases Y2SiO7 and Y5Si3C0.5 increases with the increase of Y2O3content， and the intensity of the diffraction peaks of the main phase decreases. Scanning electron microscopy analysis shows that the size of SiC ceramics is 2.5μm. As the increase of Y2O3 content， the grain size of SiC ceramics is reduced， the content of liquid phase increases during high-temperature sintering， the melt viscosity is reduced， and the crystal grains are more tightly bonded. Considering the bulk density of porous ceramics， the maximum bulk density of SiC is 2.21 g/cm3 with a Y2O3 content of 6%， and the thermal conductivity increases first and then decreases with the increase of the Y2O3 content. The filtration test of metal Cd2+ in the wastwater shows that with the increase of Y2O3 content， the residual concentration， the trend of the membrane flux of SiC thin film， and the removal rate of Cd2+ first decrease and then increase. When the doping concentration is 4%， the minimum residual concentration of Cd2+ is 0.042 mg/L， the maximum membrane flux is 572 L/(m²·h)， and the maximum removal rate is 99.95%， compared with the undoped system， the removal rate is increased by 0.14%. As the pH of the solution gradually increases， the residual concentration of metal Cd2+ gradually decreases and the removal rate gradually increases， and both stabilize under alkaline conditions when pH ≥9. On the whole， the best content of Y2O3 for porous SiC ceramics is 4%. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Food Safety & Quality is the property of Journal of Food Safety & Quality Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Environmental Science & Technology (10036504) is the property of Editorial Board of Environmental Science & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)