8 results on '"Xue-Mei Yao"'
Search Results
2. Biodegradation and decolourization of methyl red by Aspergillus versicolor LH1
- Author
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Liang Zhi Li, Heng Wei Liu, Cui Ying Hu, Xue Mei Yao, Jiao Long Fu, Li Shi Yan, Wei Qiang Guo, and Hong Ying Cheng
- Subjects
0106 biological sciences ,010405 organic chemistry ,General Medicine ,Biodegradation ,01 natural sciences ,Biochemistry ,0104 chemical sciences ,Industrial wastewater treatment ,chemistry.chemical_compound ,Activated sludge ,chemistry ,010608 biotechnology ,Methyl red ,Micronucleus test ,Aspergillus versicolor ,Micronucleus ,Biotechnology ,Nuclear chemistry ,Benzoic acid - Abstract
Azo dyes constitute a significant environmental burden due to its toxicity, carcinogenicity, and hard biodegradation. The report here is focused on the decolorization and degradation treatment of azo dye methyl red (MR). Decolorization of MR using Aspergillus versicolor LH1 isolated from activated sludge was investigated. The maximum decolorization rate of 92.3% was obtained under the optimized conditions of sucrose as carbon source, 5d incubation age, pH 6.0, 140 mg/L initial concentration of MR and 2.5 g/L initial concentration of NaNO3. Biodegradation products of MR were investigated using HPLC-MS, FTIR, and GC-MS assays. It was revealed the three bonds of -C-N = in MR aromatic nucleus were disrupted, and benzoic acid was detected. Micronucleus test with Glycine max L. and Vicia faba L. demonstrated that MCN‰ (micronucleus permillage) of MR metabolites was less than MR solution. These findings provided evidence that A. versicolor LH1 is a candidate for MR degradation in industrial wastewater treatment.
- Published
- 2020
3. Prevalence and diagnostic agreement of sarcopenic obesity with different definitions among Chinese community-dwelling older adults
- Author
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Yi-Han Mo, Chen Yang, Yi-Dong Su, Xin Dong, Wen-Yu Deng, Bei-Bei Liu, Xue-Mei Yao, and Xiu-Hua Wang
- Subjects
Male ,China ,Sarcopenia ,Aging ,General Medicine ,Body Mass Index ,Cross-Sectional Studies ,Prevalence ,Humans ,Female ,Independent Living ,Obesity ,Geriatrics and Gerontology ,Aged ,Retrospective Studies - Abstract
Objective this retrospective study aims to compare the prevalence and diagnostic agreement of sarcopenic obesity (SO) using different obesity diagnostic methods among Chinese community-dwelling older adults. Methods SO was diagnosed with sarcopenia and obesity diagnostic methods. Sarcopenia was defined using the Asian Working Group for Sarcopenia criteria 2019 (AWGS2019). Four widely used indicators were used to define obesity: body mass index (BMI), waist circumference (WC), percent of body fat (PBF) and visceral fat area (VFA). Cohen’s kappa was used to analyse the diagnosis agreement of SO between different diagnostic methods. Results a total of 1,050 participants were included, including 347 men (71.3 ± 7.4 years) and 703 women (69.9 ± 7.5 years). The prevalence of sarcopenia was 25% in total participants, there was no difference between men (24.2%) and women (25.5%), (P = 0.705). With different obesity diagnostic methods, the obesity prevalence ranged from 4.1 to 42.2%, the SO prevalence was 0.1–7.9%. The diagnosis agreement of SO was poor-to-moderate (κ ranged from −0.002 to 0.682). Among the four diagnostic methods, AWGS combined with BMI had the poorest agreement (κ = −0.002 with other methods), AWGS combined with VFA had the best agreement (κ = 0.641 and 0.682 with AWGS combined with PBF and with AWGS combined with WC, respectively). Conclusion the prevalence of SO vary considerably and the diagnostic agreement is poor-to-moderate with non-uniform diagnostic methods. BMI has the lowest sensitivity, whereas VFA has the highest sensitivity in diagnosis of SO, and VFA has a relatively good diagnostic agreement with other diagnostic methods.
- Published
- 2022
4. Development and Validation of a Nomogram for Predicting Sarcopenia in Community-Dwelling Older Adults
- Author
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Yi-Han Mo, Yi-Dong Su, Xin Dong, Jing Zhong, Chen Yang, Wen-Yu Deng, Xue-Mei Yao, Bei-Bei Liu, and Xiu-Hua Wang
- Subjects
Nomograms ,Sarcopenia ,Risk Factors ,Health Policy ,Humans ,General Medicine ,Independent Living ,Geriatrics and Gerontology ,Middle Aged ,General Nursing ,Aged ,Retrospective Studies - Abstract
To establish and validate a nomogram that predicts the risk of sarcopenia for community-dwelling older residents.Retrospective study.A total of 1050 community-dwelling older adults.Data from a survey of community-dwelling older residents (≥60 years old) in Hunan, China, from June to September 2019 were retrospectively analyzed. The survey included general demographic information, diet, and exercise habits. Sarcopenia diagnosis was according to 2019 Asian Working Group for Sarcopenia criteria. Participants were randomly divided into the development group and validation groups. Independent risk factors were screened by multivariate logistic regression analysis. Based on the independent risk factors, a nomogram model was developed to predict the risk of sarcopenia for community-dwelling older adults. Both in the development and validation sets, the discrimination, calibration, and clinical practicability of the nomogram were verified using receiver operating characteristic curve analysis, Hosmer-Lemeshow test, and decision curve analysis, respectively.Sarcopenia was identified in 263 (25.0%) participants. Age, body mass index, marital status, regular physical activity habit, uninterrupted sedentary time, and dietary diversity score were significant contributors to sarcopenia risk. A nomogram for predicting sarcopenia in community-dwelling older adults was developed using these factors. Receiver operating characteristic curve analysis showed that the area under the curve was 0.827 (95% CI 0.792-0.860) and 0.755 (95% CI 0.680-0.837) in the development and validation sets, respectively. The Hosmer-Lemeshow test yielded P values of .609 and .565, respectively, for the 2 sets. The nomogram demonstrated a high net benefit in the clinical decision curve in both sets.This study developed and validated a risk prediction nomogram for sarcopenia among community-dwelling older adults. Sarcopenia risk was classified as low (11%), moderate (11%-70%), and high (70%). This nomogram provides an accurate visual tool to medical staff, caregivers, and older adults for prediction, early intervention, and graded management of sarcopenia.
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- 2021
5. Biodegradation and decolourization of methyl red by
- Author
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Cui Ying, Hu, Hong Ying, Cheng, Xue Mei, Yao, Liang Zhi, Li, Heng Wei, Liu, Wei Qiang, Guo, Li Shi, Yan, and Jiao Long, Fu
- Subjects
Aspergillus ,Biodegradation, Environmental ,Wastewater ,Azo Compounds ,Water Pollutants, Chemical ,Water Purification - Abstract
Azo dyes constitute a significant environmental burden due to its toxicity, carcinogenicity, and hard biodegradation. The report here is focused on the decolorization and degradation treatment of azo dye methyl red (MR). Decolorization of MR using
- Published
- 2020
6. Comparison of Three Screening Methods for Sarcopenia in Community-Dwelling Older Persons
- Author
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Yi-Dong Su, Bei-Bei Liu, Xue-Mei Yao, Xiu-hua Wang, Jing Zhong, Wen-Yu Deng, Xin Dong, Yi-Han Mo, and Xiao-Qin Wang
- Subjects
Sarcopenia ,medicine.medical_specialty ,03 medical and health sciences ,0302 clinical medicine ,Surveys and Questionnaires ,Internal medicine ,Screening method ,Calf circumference ,medicine ,Humans ,Mass Screening ,030212 general & internal medicine ,Geriatric Assessment ,Climbing stairs ,General Nursing ,Aged ,Aged, 80 and over ,Hand Strength ,Receiver operating characteristic ,business.industry ,Health Policy ,General Medicine ,medicine.disease ,Confidence interval ,Walking Speed ,Gait speed ,Cross-Sectional Studies ,Independent Living ,Geriatrics and Gerontology ,Older people ,business ,human activities ,030217 neurology & neurosurgery - Abstract
Objective The 2019 Asian Working Group on Sarcopenia in Older People (AWGS 2019) recommends using either calf circumference or the strength, assistance in walking, rising from a chair, climbing stairs, and falls (SARC-F) or SARC-F combined with calf circumference (SARC-CalF) questionnaires for sarcopenia screening. The aim of this study was to compare the ability and applicability of calf circumference, SARC-F, and SARC-CalF for screening sarcopenia among community-dwelling older adults. Design Cross-sectional study. Setting and Participants A total of 1050 community-dwelling older people were enrolled. Methods Sarcopenia was diagnosed according to the AWGS 2019 criteria: bioimpedance analysis for appendicular skeletal muscle index, hand grip, and 6-m gait speed test. Participants also completed the SARC-F questionnaire and calf circumference measurement. The screening tools’ performances were evaluated through receiver operating characteristic (ROC) curves, area under the ROC curves (AUC), and sensitivity/specificity analyses. Results Sarcopenia was identified in 263 (25.0%) participants by the AWGS 2019 criteria. Calf circumference had a sensitivity of 81.4% and a specificity of 77.0%. Sensitivity and specificity of SARC-F for screening sarcopenia were 17.9% and 93.7%, respectively. SARC-CalF improved the sensitivity of SARC-F (47.5%) while keeping similar specificity (92.0%). The AUCs of calf circumference, SARC-F, and SARC-CalF were 0.79 [95% confidence interval (CI), 0.77–0.82], 0.56 (95% CI, 0.52–0.59), and 0.70 (95% CI, 0.67–0.73), respectively. The differences across ROC curves were statistically significant among 3 screening tools (P Conclusions and Implications The overall screening ability of calf circumference was better than that of SARC-F and SARC-CalF for sarcopenia in community-dwelling older persons despite gender, age, and cognitive function. SARC-F and SARC-CalF have high specificity but are susceptible to the preceding factors.
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- 2021
7. PLC-Based Integrated Voltage Regulator Thermostat Power Source
- Author
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Yuan Fu and Xue Mei Yao
- Subjects
Engineering ,Low-dropout regulator ,Switched-mode power supply ,business.industry ,Electrical engineering ,General Medicine ,Voltage regulator ,Voltage regulator module ,Voltage optimisation ,Dropout voltage ,Control theory ,Voltage source ,Voltage regulation ,business - Abstract
The PLC-based integrated voltage regulator thermostat power source is constituted by the voltage regulator, the controller and the electric heater. It can achieve a moderate control of the electric heater, protect the power grid and load from disturbed and reduce the volatility of the test chamber studio. The system has simple power regulation line, stable performance, high reliability, and can be widely applied in the area of industrial automation and control.
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- 2013
8. LSA-Based Automated Essay Scoring in Chinese Context
- Author
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Xue Mei Yao
- Subjects
Computer science ,business.industry ,Context (language use) ,General Medicine ,Artificial intelligence ,Automated essay scoring ,computer.software_genre ,business ,computer ,Natural language processing ,Test (assessment) - Abstract
Since its invention in the 1990s, an immense body of academic literature on LSA regarding to Automated Essay Scoring (AES) has been published. The current study investigated the extent of applicability and usefulness of LSA-based AES for assigning English essays written by Chinese college students. The statistical results showed the application of LSA-based AES in Chinese EFL context is to the limited context. The reason is that LSA-based AES focuses on content while Chinese English writing test are grammar-oriented.
- Published
- 2013
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