75 results on '"Xueqin, He"'
Search Results
2. A randomized controlled comparative study of different fluid exchange modes in urgent-start peritoneal dialysis in patients with end-stage renal disease: automated peritoneal dialysis combined with manual fluid exchange vs. manual fluid exchange alone
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Xiaoxiao Xia, Xueqin He, Li Pu, Xia Liu, Xueli Zhou, Xiao Fang Wu, Zhiyun Zang, and Zi Li
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Automated peritoneal dialysis ,manual fluid exchange peritoneal dialysis ,urgent-start peritoneal dialysis ,end-stage renal disease ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
AbstractDuring urgent-start peritoneal dialysis (USPD) in end-stage renal disease (ESRD) patients, both adequate dialysis and skill training for fluid exchange are essential. However, automated peritoneal dialysis (APD) alone or manual fluid exchange peritoneal dialysis (MPD) alone could meet the above demands. Therefore, our study combined APD with MPD (A-MPD), and compared A-MPD with MPD, aiming to find the most appropriate treatment mode. This was a single-center, prospective, randomized controlled study. All eligible patients were randomized into the MPD and A-MPD groups. All patients underwent a five-day USPD treatment 48 h after catheter implantation, and they were followed up for six months after discharge. Overall, 74 patients were enrolled in this study. Among these, 14 and 60 patients quit due to complications during USPD and completed the study (A-MPD = 31, MPD = 29), respectively. Compared with MPD, the A-MPD treatment mode had a better effect on removing serum creatinine, blood urea nitrogen, and potassium and improving serum carbon dioxide combining power levels; it had less time expenditure on the fluid exchange by nurses (p
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- 2023
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3. IoU-aware feature fusion R-CNN for dense object detection.
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Jixuan Hong, Xueqin He, Zhaoli Deng, and Chenhui Yang
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- 2024
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4. A breakthrough trial of an artificial liver without systemic heparinization in hyperbilirubinemia beagle models
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Yilin Wang, Shanshan Wang, Xueqin He, Yupei Li, Tao Xu, Lin Xu, Bo Yang, Xinnian Fan, Weifeng Zhao, and Changsheng Zhao
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Wearable artificial liver ,Anticoagulant ,Bilirubin ,Kevlar ,Microspheres ,Materials of engineering and construction. Mechanics of materials ,TA401-492 ,Biology (General) ,QH301-705.5 - Abstract
The development of wearable artificial livers was restricted to device miniaturization and bleeding risk with water-soluble anticoagulants. Herein, a double-deck column filled with solid anticoagulant microspheres and Kevlar porous microspheres (KPMs, bilirubin adsorbents) was connected with the principle machine of wearable artificial liver (approximately 9 kg) to treat hyperbilirubinemia beagles for the first time. With the initial normal dose of heparin, the double-deck column could afford 3 h hemoperfusion in whole blood without thrombus formation. The removal efficiency of the double-deck column for total bilirubin (TBIL) was 31.4%. Interestingly, the excessive amounts of hepatocyte metabolites were also decreased by approximately 25%. The “anticoagulant + column” realized safe and effective whole blood hemoperfusion without the plasma separation system and heparin pump; however, the proposed principle machine of wearable artificial liver and “anticoagulant + column” cannot completely replace the bio-liver now. The intelligence of the device and the versatility of the adsorbent need to be improved; moreover, advanced experimental techniques need to be developed to validate the survival rates in animals. Overall, this study is a meaningful trial for the development of wearable artificial livers in the future.
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- 2023
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5. Intelligent lesion blood–brain barrier targeting nano-missiles for Alzheimer's disease treatment by anti-neuroinflammation and neuroprotection
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Xueqin He, Xiaorong Wang, Lianyi Yang, Zhihang Yang, Wenqi Yu, Yazhen Wang, Rui Liu, Meiwan Chen, and Huile Gao
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Receptor for advanced glycation end products ,ROS-responsive ,Blood‒brain barrier transcytosis ,Alzheimer's disease ,Drug combination ,Anti-neuroinflammation ,Therapeutics. Pharmacology ,RM1-950 - Abstract
The treatment of Alzheimer's disease (AD) is one of the most difficult challenges in neurodegenerative diseases due to the insufficient blood‒brain barrier (BBB) permeability and unsatisfactory intra-brain distribution of drugs. Therefore, we established an ibuprofen and FK506 encapsulated drug co-delivery system (Ibu&FK@RNPs), which can target the receptor of advanced glycation endproducts (RAGE) and response to the high level of reactive oxygen species (ROS) in AD. RAGE is highly and specifically expressed on the lesion neurovascular unit of AD, this property helps to improve targeting specificity of the system and reduce unselective distribution in normal brain. Meanwhile, these two drugs can be specifically released in astrocytes of AD lesion in response to high levels of ROS. As a result, the cognition of AD mice was significantly improved and the quantity of Aβ plaques was decreased. Neurotoxicity was also alleviated with structural regeneration and functional recovery of neurons. Besides, the neuroinflammation dominated by NF-κB pathway was significantly inhibited with decreased NF-κB and IL-1β in the brain. Overall, Ibu&FK@RNPs can efficiently and successively target diseased BBB and astrocytes in AD lesion. Thus it significantly enhances intracephalic accumulation of drugs and efficiently treats AD by anti-neuroinflammation and neuroprotection.
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- 2022
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6. Self-propelled nanomotor reconstructs tumor microenvironment through synergistic hypoxia alleviation and glycolysis inhibition for promoted anti-metastasis
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Wenqi Yu, Ruyi Lin, Xueqin He, Xiaotong Yang, Huilin Zhang, Chuan Hu, Rui Liu, Yuan Huang, Yi Qin, and Huile Gao
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Nanomotor ,Microenvironment modulation ,Hypoxia ,Aerobic glycolysis ,Triple negative breast cancer ,Anti-metastasis ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Solid tumors always exhibit local hypoxia, resulting in the high metastasis and inertness to chemotherapy. Reconstruction of hypoxic tumor microenvironment (TME) is considered a potential therapy compared to directly killing tumor cells. However, the insufficient oxygen delivery to deep tumor and the confronting “Warburg effect” compromise the efficacy of hypoxia alleviation. Herein, we construct a cascade enzyme-powered nanomotor (NM-si), which can simultaneously provide sufficient oxygen in deep tumor and inhibit the aerobic glycolysis to potentiate anti-metastasis in chemotherapy. Catalase (Cat) and glucose oxidase (GOx) are co-adsorbed on our previously reported CAuNCs@HA to form self-propelled nanomotor (NM), with hexokinase-2 (HK-2) siRNA further condensed (NM-si). The persistent production of oxygen bubbles from the cascade enzymatic reaction propels NM-si to move forward autonomously and in a controllable direction along H2O2 gradient towards deep tumor, with hypoxia successfully alleviated in the meantime. The autonomous movement also facilitates NM-si with lysosome escaping for efficient HK-2 knockdown to inhibit glycolysis. In vivo results demonstrated a promising anti-metastasis effect of commercially available albumin-bound paclitaxel (PTX@HSA) after pre-treated with NM-si for TME reconstruction. This cascade enzyme-powered nanomotor provides a potential prospect in reversing the hypoxic TME and metabolic pathway for reinforced anti-metastasis of chemotherapy.
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- 2021
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7. Acid‐Responsive Dual‐Targeted Nanoparticles Encapsulated Aspirin Rescue the Immune Activation and Phenotype in Autism Spectrum Disorder
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Xueqin He, Jiang Xie, Jing Zhang, Xiaorong Wang, Xufeng Jia, Heng Yin, Zhongqing Qiu, Zhihang Yang, Jiao Chen, Zhiliang Ji, Wenqi Yu, Meiwan Chen, Wenming Xu, and Huile Gao
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aspirin ,autism spectrum disorder ,nanoparticles ,neuro‐inflammation ,Science - Abstract
Abstract The treatment of autism spectrum disorder (ASD) is one of the most difficult challenges in neurodevelopmental diseases, because of the unclear pathogenesis research and low brain‐lesion targeting efficiency. Besides, maternal immune activation has been reported as the most mature and widely used model of ASD and aspirin‐triggered lipoxin A4 is a potent anti‐inflammatory mediator being involved in the resolution of neuroinflammation in ASD. Therefore, an aspirin encapsulated cascade drug delivery system (Asp@TMNPs) is established, which can successively target the blood–brain barrier (BBB) and microglial cells and response to the acid microenvironment in lysosome. As a result, the mitochondrial oxidative stress, DNA damage, and inflammation of microglial cells are prominently alleviated. After the treatment of Asp@TMNPs, the social interaction, stereotype behavior, and anxious condition of ASD mice are notably improved and the activation of microglial cells is inhibited. Overall, this system successively penetrates the BBB and targets microglial cells, therefore, it significantly enhances the intracephalic drug accumulation and improves anti‐neuroinflammatory efficacy of aspirin, providing a promising strategy for ASD treatment.
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- 2022
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8. Multi-Source and Multi-Representation Adaptation for Cross-Domain Electroencephalography Emotion Recognition
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Jiangsheng Cao, Xueqin He, Chenhui Yang, Sifang Chen, Zhangyu Li, and Zhanxiang Wang
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EEG ,emotion recognition ,domain adaption ,deep learning ,affective computing ,SEED ,Psychology ,BF1-990 - Abstract
Due to the non-invasiveness and high precision of electroencephalography (EEG), the combination of EEG and artificial intelligence (AI) is often used for emotion recognition. However, the internal differences in EEG data have become an obstacle to classification accuracy. To solve this problem, considering labeled data from similar nature but different domains, domain adaptation usually provides an attractive option. Most of the existing researches aggregate the EEG data from different subjects and sessions as a source domain, which ignores the assumption that the source has a certain marginal distribution. Moreover, existing methods often only align the representation distributions extracted from a single structure, and may only contain partial information. Therefore, we propose the multi-source and multi-representation adaptation (MSMRA) for cross-domain EEG emotion recognition, which divides the EEG data from different subjects and sessions into multiple domains and aligns the distribution of multiple representations extracted from a hybrid structure. Two datasets, i.e., SEED and SEED IV, are used to validate the proposed method in cross-session and cross-subject transfer scenarios, experimental results demonstrate the superior performance of our model to state-of-the-art models in most settings.
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- 2022
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9. Deep Convolutional Neural Network With a Multi-Scale Attention Feature Fusion Module for Segmentation of Multimodal Brain Tumor
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Xueqin He, Wenjie Xu, Jane Yang, Jianyao Mao, Sifang Chen, and Zhanxiang Wang
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magnetic resonance imaging (MRI) ,semantic segmentation ,convolutional neural network ,residual network ,attention mechanism ,brain tumor ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
As a non-invasive, low-cost medical imaging technology, magnetic resonance imaging (MRI) has become an important tool for brain tumor diagnosis. Many scholars have carried out some related researches on MRI brain tumor segmentation based on deep convolutional neural networks, and have achieved good performance. However, due to the large spatial and structural variability of brain tumors and low image contrast, the segmentation of MRI brain tumors is challenging. Deep convolutional neural networks often lead to the loss of low-level details as the network structure deepens, and they cannot effectively utilize the multi-scale feature information. Therefore, a deep convolutional neural network with a multi-scale attention feature fusion module (MAFF-ResUNet) is proposed to address them. The MAFF-ResUNet consists of a U-Net with residual connections and a MAFF module. The combination of residual connections and skip connections fully retain low-level detailed information and improve the global feature extraction capability of the encoding block. Besides, the MAFF module selectively extracts useful information from the multi-scale hybrid feature map based on the attention mechanism to optimize the features of each layer and makes full use of the complementary feature information of different scales. The experimental results on the BraTs 2019 MRI dataset show that the MAFF-ResUNet can learn the edge structure of brain tumors better and achieve high accuracy.
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- 2021
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10. Novel Predictors and Risk Score of Treatment Failure in Peritoneal Dialysis-Related Peritonitis
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Xiang Liu, Aiya Qin, Huan Zhou, Xueqin He, Shamlin Cader, Sirui Wang, Yi Tang, and Wei Qin
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predictors ,treatment failure ,catheter removal ,risk score ,peritoneal dialysis associated peritonitis ,Medicine (General) ,R5-920 - Abstract
Objective: Peritonitis is a severe complication in peritoneal dialysis (PD). This study was performed to identify predictors and establish a risk score for treatment failure in peritonitis patients.Methods: A single-center, retrospective observational study was conducted. The basic demographic characteristics, clinical and laboratory data of all patients with peritonitis during the study period were documented and analyzed. Multivariate logistic regression was applied to examine independent predictors of treatment failure, and a risk prediction score was established.Results: Three hundred fourteen episodes experienced by 241 patients were included in the final analysis. Logistic regression analysis indicated that PD duration (OR 1.017; P 0.005), fibrinogen (OR 1.327; P 0.021), high-density lipoprotein (OR 0.443; P 0.032), fungal infection (OR 63.413; P < 0.001), intestinal obstruction (OR 5.186, P 0.007), and diabetes mellitus (OR 2.451; P 0.018), hemodialysis history (OR 2.804, P 0.006) were independent predictors of treatment failure. The risk prediction score system showed a good calibration (P > 0.05) and discrimination (AUROC 0.80, P < 0.001).Conclusions: Fibrinogen, PD duration, fungal infection, hemodialysis history, concurrent intestinal obstruction, or diabetes mellitus were independent risk factors for a poor peritonitis outcome, while the high-density lipoprotein was a protective factor. This novel risk prediction score system may be used to predict a high risk of treatment failure effectively.
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- 2021
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11. Rational Design of Effective Binders for LiFePO4 Cathodes
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Shu Huang, Xiaoting Huang, Youyuan Huang, Xueqin He, Haitao Zhuo, and Shaojun Chen
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polymer binder ,structure design ,electrochemical performance ,Li-ion batteries ,LiFePO4 cathode ,Organic chemistry ,QD241-441 - Abstract
Polymer binders are critical auxiliary additives to Li-ion batteries that provide adhesion and cohesion for electrodes to maintain conductive networks upon charge/discharge processes. Therefore, polymer binders become interconnected electrode structures affecting electrochemical performances, especially in LiFePO4 cathodes with one-dimensional Li+ channels. In this paper, recent improvements in the polymer binders used in the LiFePO4 cathodes of Li-ion batteries are reviewed in terms of structural design, synthetic methods, and working mechanisms. The polymer binders were classified into three types depending on their effects on the performances of LiFePO4 cathodes. The first consisted of PVDF and related composites, and the second relied on waterborne and conductive binders. Profound insights into the ability of binder structures to enhance cathode performance were discovered. Overcoming the bottleneck shortage originating from olivine structure LiFePO4 using efficient polymer structures is discussed. We forecast design principles for the polymer binders used in the high-performance LiFePO4 cathodes of Li-ion batteries. Finally, perspectives on the application of future binder designs for electrodes with poor conductivity are presented to provide possible design directions for chemical structures.
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- 2021
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12. Pharmacokinetics and pharmacodynamics of sacubitril/valsartan in peritoneal dialysis patients
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Yi He, Ying Jin, Hen Xue, Runhan Liu, Mengyu Zhang, Ruoxi Liao, Maoli Chen, Xueli Zhou, Xueqin He, Min Qin, Kuo Li, Huiqun Zou, Ying Gan, Zhenlei Wang, Li Zheng, Hui Zhong, and Ping Fu
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Transplantation ,Nephrology - Abstract
Background There is little information on the pharmacokinetics and pharmacodynamics of sacubitril/valsartan (SV) in patients undergoing peritoneal dialysis (PD) complicated with hypertension or heart failure (HF). This study was designed to evaluate the pharmacokinetics and pharmacodynamics of SV in PD patients with complications of hypertension or HF. Methods This was an open-label and cross-sectional study investigating PD patients diagnosed with hypertension or New York Heart Association Class II–IV HF. The concentrations of valsartan, sacubitril and sacubitrilat (LBQ657) were measured by ultra-performance liquid chromatography tandem mass spectrometry in plasma, urine and peritoneal dialysate samples. Pharmacodynamics were evaluated by comparing changes in mean sitting systolic blood pressure (msSBP), mean sitting diastolic blood pressure (msDBP), mean sitting heart rate, N-terminal-pro B-type natriuretic peptide (NT-proBNP) and left ventricular ejection fraction (LVEF). Results Forty patients with PD were enrolled including 27 (67.5%) patients with hypertension, 4 (10%) patients with HF and 9 (22.5%) patients with both hypertension and HF. This study included three treatment cohorts: 50 mg twice daily (BID), 100 mg once daily and 100 mg BID. The plasma maximum drug concentrations in the 100 mg BID group were 1995 ± 1499 ng/mL for valsartan, 171 ± 148 ng/mL for sacubitril and 13 686 ± 7418 ng/mL for LBQ657. The 24-h recovery rate of LBQ657 was 3.77% in urine and 2.23% in peritoneal dialysate. After taking SV, msSBP and msDBP decreased by 19.25 ± 10.32 mmHg and 10.10 ± 8.00 mmHg from baseline, respectively. NT-proBNP decreased by 1436.50 (0.00–18 198.00) from baseline, while LVEF increased by 5.00 (–0.25 to 9.25) from baseline after SV treatment. Conclusions PD and residual renal function contributed only to a minor degree to the elimination of LBQ657. Additionally, a dose of 100 mg BID SV is safe and effective in patients with PD with complications of hypertension or HF.
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- 2023
13. Characterization of Mixed Material Particles and the Interfaces between Biochar and Pig Manure During Aerobic Composting
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Xueqin He, Zhihao Peng, Yufeng Chen, Yuanping Huang, Chen Fang, Jinpeng Xiong, Shurong Du, Suan Shi, G.Q. Huang, and Lujia Han
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- 2023
14. Improving the performance of silicon monoxide anodes via tuning a multiple pre-doping system: a first-principles study
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Wei Xie, Chunlei Pang, Peng He, Chengmao Xiao, Michihisa Koyama, Jiantao Wang, Xiaopeng Qi, Jianguo Ren, and Xueqin He
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General Physics and Astronomy ,Physical and Theoretical Chemistry - Abstract
A multiple pre-doping system with a looser structure displays small fractional volume expansion.
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- 2022
15. Combined effects of amoxicillin and copper on nitrogen transformation and the microbial mechanisms during aerobic composting of cow manure
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Ya Su, Jinpeng Xiong, Chen Fang, Huiwen Qu, Lujia Han, Xueqin He, and Guangqun Huang
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Environmental Engineering ,Health, Toxicology and Mutagenesis ,Environmental Chemistry ,Pollution ,Waste Management and Disposal - Published
- 2023
16. Effects of functional membrane coverings on carbon and nitrogen evolution during aerobic composting: Insight into the succession of bacterial and fungal communities
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Jinpeng Xiong, Ya Su, Xueqin He, Lujia Han, and Guangqun Huang
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Environmental Engineering ,Renewable Energy, Sustainability and the Environment ,Bioengineering ,General Medicine ,Waste Management and Disposal - Abstract
Carbon and nitrogen evolution and bacteria and fungi succession in two functional membrane-covered aerobic composting (FMCAC) systems and a conventional aerobic composting system were investigated. The micro-positive pressure in each FMCAC system altered the composting microenvironment, significantly increased the oxygen uptake rates of microbes (p0.05), and increased the abundance of cellulose- and hemicellulose-degrading microorganisms. Bacteria and fungi together influenced the conversion between carbon and nitrogen forms. FMCAC made the systems less anaerobic and decreased CH
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- 2022
17. Design of Conductive Binders for LiFePO4 Cathodes with Long-Term Cycle Life
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Ming Chen, Haitao Zhuo, Youyuan Huang, Shu Huang, Shaojun Chen, Heng Chen, and Xueqin He
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Materials science ,Renewable Energy, Sustainability and the Environment ,law ,General Chemical Engineering ,Environmental Chemistry ,General Chemistry ,Composite material ,Electrical conductor ,Cathode ,Term (time) ,law.invention - Published
- 2021
18. Safety production and application of dairy bedding by membrane-covered aerobic fermentation: Insight into the evolution of mastitis pathogens and harmful gas emissions
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Hongjie Yin, Chen Fang, Xueqin He, Hao Yu, Yuying Liang, Lujia Han, and Guangqun Huang
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Process Chemistry and Technology ,Chemical Engineering (miscellaneous) ,Pollution ,Waste Management and Disposal - Published
- 2023
19. Hierarchical Carbon Shell Compositing Microscale Silicon Skeleton as High-Performance Anodes for Lithium-Ion Batteries
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Weili An, Guo Eming, Guohui Yuan, Xueqin He, Ren Jianguo, He Peng, Ning Du, Chunlei Pang, Xiao Chengmao, and Deren Yang
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Materials science ,Silicon ,Energy Engineering and Power Technology ,chemistry.chemical_element ,Anode ,Ion ,chemistry ,Chemical engineering ,Compositing ,Materials Chemistry ,Electrochemistry ,Chemical Engineering (miscellaneous) ,Lithium ,Electrical and Electronic Engineering ,Carbon ,Microscale chemistry ,Faraday efficiency - Abstract
Si is a promising high-capacity anode material; however, its practical implementation is hindered by its huge volume expansion, low initial Coulombic efficiency (ICE), poor cycling life, and high c...
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- 2021
20. Unmasking CSF protein corona: Effect on targeting capacity of nanoparticles
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Ling Wang, Huilin Zhang, Huile Gao, Wei Xiao, Tao Gong, Xueqin He, Xue Xia, Yazhen Wang, Yuwei Liu, and Yang Zhou
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endocrine system ,media_common.quotation_subject ,education ,Serum albumin ,Pharmaceutical Science ,Protein Corona ,02 engineering and technology ,Endocytosis ,Clathrin ,03 medical and health sciences ,In vivo ,Internalization ,health care economics and organizations ,CSF albumin ,030304 developmental biology ,media_common ,Drug Carriers ,0303 health sciences ,biology ,Chemistry ,Transferrin ,technology, industry, and agriculture ,021001 nanoscience & nanotechnology ,In vitro ,biology.protein ,Biophysics ,Nanoparticles ,Polystyrenes ,0210 nano-technology - Abstract
Among biological fluids, cerebrospinal fluid (CSF) not only protects and support brain, but also plays a pivotal role in intracerebral interaction of various nano-drug carriers. However, it is still uncertain how protein corona from CSF affects the targeting capability of functionalized nanoparticles (NPs). So, two types of polystyrene NPs, including PEGylated polystyrene NPs (PN) and transferrin (Tf)-modified PN (PT), were used to obtain protein corona-coated NPs, by incubating with CSF in vivo and in vitro. Strikingly, both the corona-coated NPs recovered in vivo and in vitro completely lost their active targeting characteristics towards bEnd.3 and C6 cells. Charge-, clathrin- and energy-mediated endocytosis contributed to the improved uptake efficiency of PT, whereas this enhancement in uptake of PT was disappeared after the formation of CSF protein corona. Moreover, serum albumin, which were found both in vivo and in vitro CSF corona, could mediate and facilitate the internalization of corona-coated NPs. Overall, these results have distinctly confirmed that the formation of CSF protein corona could cause the loss of active targeting specificity by shielding the targeting groups on the surface of polystyrene NPs and alter their cellular uptake by other non-specific internalization pathways.
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- 2021
21. A novel zwitterionic polymer binder with enhanced ionic conductivity for water-processable LiFePO4 cathodes
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Xueqin He, Shu Huang, Shaojun Chen, Haitao Zhuo, Youyuan Huang, Xiaoting Huang, and Xiaokai Li
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chemistry.chemical_classification ,Battery (electricity) ,02 engineering and technology ,General Chemistry ,Polymer ,Conductivity ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Catalysis ,Cathode ,0104 chemical sciences ,law.invention ,chemistry.chemical_compound ,chemistry ,Chemical engineering ,law ,Materials Chemistry ,Ionic conductivity ,0210 nano-technology ,Ionomer - Abstract
Current olivine structure LiFePO4 possesses poor conductivity, which makes it unsuitable for unparalleled battery applications. This issue can be solved by improved design concepts of binder systems. Herein, an original waterborne binder polymer with efficient functional groups is designed and fabricated for LiFePO4 cathodes of lithium-ion batteries (LIBs). Compared to universal lithiated ionomer binders, the introduction of the zwitterionic structure of the ionomer enhances the ionic conductivity by nearly 100-fold. LiFePO4 cathodes assembled with limited 1.5 wt% lithiated zwitterionic ionomer (LZI) maintain markedly stable cycling performances with 95.62% retention at 1C after 250 cycles. Also, LZI-cathodes preserve good integrity structures after cycling, as confirmed by morphology analysis. In sum, LZI-cathodes look promising for potential applications in LIBs due to their numerous advantageous characteristics.
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- 2021
22. Effects of micro-positive pressure environment on nitrogen conservation and humification enhancement during functional membrane-covered aerobic composting
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Jinpeng, Xiong, Ya, Su, Huiwen, Qu, Lujia, Han, Xueqin, He, Jianbin, Guo, and Guangqun, Huang
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Environmental Engineering ,Environmental Chemistry ,Pollution ,Waste Management and Disposal - Abstract
Aerobic composting is a humification process accompanied by nitrogen loss. This study is the first research systematically investigating and elucidating the mechanism by which functional membrane-covered aerobic composting (FMCAC) reduces nitrogen loss and enhances humification. The variations in bioavailable organic nitrogen (BON) and humic substances (HSs) in different composting systems were quantitatively studied, and the functional succession patterns of fungal groups were determined by high-throughput sequencing and FUNGuild. The FMCAC improved oxygen utilization and pile temperature, increased BON by 29.95 %, reduced nitrogen loss by 34.00 %, and enhanced humification by 26.09 %. Meanwhile, the FMCAC increased the competitive advantage of undefined saprotroph and significantly reduced potential pathogenic fungi (0.10 %). Structural equation modeling indicated that undefined saprotroph facilitated the humification process by increasing the production of BON and storing BON in stable humic acid. Overall, the FMCAC increased the safety, stability, and quality of the final compost product.
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- 2023
23. In-situ modified polyethersulfone oxygenation membrane with improved hemocompatibility and gas transfer efficiency
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Lunhao Zhi, Siyu Li, Xueqin He, Yunbo Feng, Chong Cheng, Shuang Li, Shudong Sun, and Changsheng Zhao
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History ,Polymers and Plastics ,Filtration and Separation ,General Materials Science ,Business and International Management ,Physical and Theoretical Chemistry ,Biochemistry ,Industrial and Manufacturing Engineering - Published
- 2023
24. Exploring the microbial mechanism of reducing methanogenesis during dairy manure membrane-covered aerobic composting at industrial scale
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Chen Fang, Ya Su, Yuying Liang, Lujia Han, Xueqin He, and Guangqun Huang
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Manure ,Soil ,Environmental Engineering ,Renewable Energy, Sustainability and the Environment ,Composting ,Bioengineering ,General Medicine ,Waste Management and Disposal ,Archaea ,Methane - Abstract
In this study, the microbial mechanism of reducing methanogenesis during membrane-covered aerobic composting from solid dairy manure was investigated. An industrial-scale experiment was carried out to compare a static composting group (SC) and a forced aeration composting group (AC) with a semipermeable membrane-covered composting group (MC + AC). The results showed that the semipermeable membrane-covered could improve the oxygen utilization rate and inhibit the anaerobic bacterial genus Hydrogenispora and archaea order Methanobacteriales. During the membrane-covered period, the acetoclastic methanogenesis module in MC + AC, AC and SC decreased by 0.58%, 0.05% and 0.04%, respectively, and the cdhC gene in the acetoclastic pathway was found to be decreased by 65.51% only in MC + AC. Changes in methane metabolism pathways resulted in a 27.48% lower average methane concentration in MC + AC than in SC. Therefore, the semipermeable membrane-covered strategy can effectively reduce methane production during dairy manure aerobic composting by restricting the methanogenesis of the acetoclastic pathway.
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- 2022
25. Effects of functional-membrane covering technique on nitrogen succession during aerobic composting: Metabolic pathways, functional enzymes, and functional genes
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Jinpeng Xiong, Ya Su, Xueqin He, Lujia Han, Jianbin Guo, Wei Qiao, and Guangqun Huang
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Soil ,Environmental Engineering ,Renewable Energy, Sustainability and the Environment ,Nitrogen ,Composting ,Denitrification ,Nitrous Oxide ,Bioengineering ,General Medicine ,Waste Management and Disposal ,Metabolic Networks and Pathways ,Soil Microbiology - Abstract
This study investigated and assessed the effect of the functional-membrane covering technique (FMCT) on nitrogen succession during aerobic composting. By comparative experiments involving high-throughput sequencing and qPCR, nitrogen metabolism (including the ko00910 pathway and functional enzyme and gene abundances) was analyzed, and the nitrogen succession mechanism was identified. The FMCT created a micro-positive pressure, improved the aerobic conditions, and increased the oxygen utilization rate and temperature. This strongly affected the nitrogen metabolism pathway and down-regulated the nitrifying and denitrifying bacteria abundances. The FMCT up-regulated the relative abundance of glutamate dehydrogenase and down-regulated the absolute abundances of AOB and nxrA. This and the high temperature increased NH
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- 2022
26. Scalable Synthesis of Pore-Rich Si/C@C Core-Shell-Structured Microspheres for Practical Long-Life Lithium-Ion Battery Anodes
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Weili An, Peng He, Zongzhou Che, Chengmao Xiao, Eming Guo, Chunlei Pang, Xueqin He, Jianguo Ren, Guohui Yuan, Ning Du, Deren Yang, Dong-Liang Peng, and Qiaobao Zhang
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General Materials Science - Abstract
Silicon/carbon (Si/C) composites have rightfully earned the attention as anode candidates for high-energy-density lithium-ion batteries (LIBs) owing to their advantageous capacity and superior cycling stability, yet their practical application remains a significant challenge. In this study, we report the large-scale synthesis of an intriguing micro/nanostructured pore-rich Si/C microsphere consisting of Si nanoparticles tightly immobilized onto a micron-sized cross-linked C matrix that is coated by a thin C layer (denoted P-Si/C@C) using a low-cost spray-drying approach and a chemical vapor deposition process with inorganic salts as pore-forming agents. The as-obtained P-Si/C@C composite has high porosity that provides sufficient inner voids to alleviate the huge volume expansion of Si. The outer smooth and robust C shells strengthen the stability of the entire structure and the solid-electrolyte interphase. Si nanoparticles embedded in a microsized cross-linked C matrix show excellent electrical conductivity and superior structural stability. By virtue of structural advantages, the as-fabricated P-Si/C@C anode displays a high initial Coulombic efficiency of 89.8%, a high reversible capacity of 1269.6 mAh g
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- 2022
27. Exploring the impact of biochar on antibiotics and antibiotics resistance genes in pig manure aerobic composting through untargeted metabolomics and metagenomics
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Xueqin He, Jinpeng Xiong, Zengling Yang, Lujia Han, and Guangqun Huang
- Subjects
History ,Environmental Engineering ,Polymers and Plastics ,Bacteria ,Renewable Energy, Sustainability and the Environment ,Swine ,Composting ,Bioengineering ,General Medicine ,Industrial and Manufacturing Engineering ,Anti-Bacterial Agents ,Manure ,Genes, Bacterial ,Charcoal ,Animals ,Metabolomics ,Metagenomics ,Business and International Management ,Waste Management and Disposal - Abstract
This study investigated the effect of biochar on antibiotics and antibiotic resistance genes (ARGs) during aerobic composting of pig manure. First, the composition and content of antibiotics in the manure were determined qualitatively and quantitatively. Biochar promoted the degradation of these antibiotics (oxytetracycline, chlortetracycline, and tetracycline). The relative abundance (RA) of antibiotic-resistant bacteria carrying ARGs accounted for about 29.32% of the total bacteria. Firmicutes and Actinomycetes were dominant phylum-level bacteria at the early and late stages of composting, respectively. Biochar decreased the total RA of ARGs by 16.83%±4.10%. tetW and tetL, closely related to tetracycline resistance, were significantly diminished during aerobic composting, and biochar was able to promote this removal. Biochar enhanced RAs of Mycobacterium tuberculosis kasA mutant. RAs of ARGs related to antibiotic efflux pumps, such as baeS and arlS, remained at a high level. Conclusively, biochar promotes degradation of antibiotics and removal of ARGs.
- Published
- 2022
28. Bacterial and Fungal Communities Succession and Dynamic Changes in Metabolic Functions and Trophic Modes During Functional-Membrane Covered Aerobic Composting
- Author
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Jinpeng Xiong, Ya Su, Ya Liu, Xueqin He, Shuangshuang Ma, G.Q. Huang, and Lujia Han
- Published
- 2022
29. Promoting Effect of Si–OH on the Decomposition of Electrolytes in Lithium-Ion Batteries
- Author
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He Peng, Jingwei Jiang, Chunlei Pang, Ning Du, Deren Yang, Zhang Yaguang, Chengmao Xiao, Xueqin He, Ren Jianguo, and Yangfan Lin
- Subjects
inorganic chemicals ,Materials science ,Silicon ,General Chemical Engineering ,Inorganic chemistry ,technology, industry, and agriculture ,chemistry.chemical_element ,02 engineering and technology ,General Chemistry ,Electrolyte ,equipment and supplies ,010402 general chemistry ,021001 nanoscience & nanotechnology ,complex mixtures ,01 natural sciences ,Decomposition ,0104 chemical sciences ,Ion ,stomatognathic diseases ,X-ray photoelectron spectroscopy ,chemistry ,Electrode ,Materials Chemistry ,Lithium ,0210 nano-technology - Abstract
A promoting effect of hydroxyls on silicon surface to the decomposition of electrolyte is discovered by comparing the performance of silicon-hydroxyl (Si-OH) and silicon-alkyl (Si-C3H7) electrodes....
- Published
- 2020
30. Large Semi-Membrane Covered Composting System Improves the Spatial Homogeneity and Efficiency of Fermentation
- Author
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Xiaoxi Sun, Guangqun Huang, Yuanping Huang, Chen Fang, Xueqin He, and Yongjun Zheng
- Subjects
Manure ,Soil ,Greenhouse Gases ,Nitrogen ,Composting ,agricultural engineering ,cow manure ,trough aerobic composting ,turning ,environment ,Health, Toxicology and Mutagenesis ,Fermentation ,Public Health, Environmental and Occupational Health - Abstract
Homogenous spatial distribution of fermentation characteristics, local anaerobic conditions, and large amounts of greenhouse gas (GHGs) emissions are common problems in large-scale aerobic composting systems. The aim of this study was to examine the effects of a semi-membrane covering on the spatial homogeneity and efficiency of fermentation in aerobic composting systems. In the covered group, the pile was covered with a semi-membrane, while in the non-covered group (control group), the pile was uncovered. The covered group entered the high-temperature period earlier and the spatial gradient difference in the group was smaller compared with the non-covered group. The moisture content loss ratio (5.91%) in the covered group was slower than that in the non-covered group (10.78%), and the covered group had a more homogeneous spatial distribution of water. The degradation rate of organic matter in the non-covered group (11.39%) was faster than that in the covered group (10.21%). The final germination index in the covered group (85.82%) was higher than that of the non-covered group (82.79%) and the spatial gradient difference in the covered group was smaller. Compared with the non-covered group, the oxygen consumption rate in the covered group was higher. The GHG emissions (by 30.36%) and power consumption in the covered group were reduced more significantly. The spatial microbial diversity of the non-covered group was greater compared with the covered group. This work shows that aerobic compost covered with a semi-membrane can improve the space homogeneity and efficiency of fermentation.
- Published
- 2022
31. Membrane-covered composting significantly decreases methane emissions and microbial pathogens: Insight into the succession of bacterial and fungal communities
- Author
-
Chen, Fang, Ya, Su, Xueqin, He, Lujia, Han, Huiwen, Qu, Ling, Zhou, and Guangqun, Huang
- Subjects
Manure ,Oxygen ,Soil ,Environmental Engineering ,Bacteria ,Composting ,Environmental Chemistry ,Methane ,Pollution ,Waste Management and Disposal ,Mycobiome - Abstract
In this study, the effects of semipermeable membrane-covered on methane emissions and potential pathogens during industrial-scale composting of the solid fraction of dairy manure were investigated. The results showed that the oxygen concentration in the membrane-covered group (CT) was maintained above 10 %, and the cumulative methane emission in CT was99 % lower than that in the control group (CK). Microbial analysis showed that the bacterial genus Thermus and the fungal genus Mycothermus were dominant in CT, and the richness and diversity of the bacterial community were greater than those of the fungal community. At the end of the composting, the relative abundance of potential bacterial pathogens in CT was 32.59 % lower than that in CK, and the relative abundance of potential fungal pathogens in each group was2 %. Structural equation models revealed that oxygen concentration was a major factor influencing the bacterial diversity in CT, and the increase of oxygen concentration could limit methane emissions by inhibiting the growth of anaerobic bacteria. Therefore, membrane-covered composting could effectively improve compost safety and reduce methane emissions by regulating microbial community structure.
- Published
- 2022
32. Micro-aerobic conditions based on membrane-covered improves the quality of compost products: Insights into fungal community evolution and dissolved organic matter characteristics
- Author
-
Chen, Fang, Xiangru, Yuan, Keke, Liao, Huiwen, Qu, Lujia, Han, Xueqin, He, and Guangqun, Huang
- Subjects
Manure ,Oxygen ,Soil ,Environmental Engineering ,Renewable Energy, Sustainability and the Environment ,Composting ,Bioengineering ,General Medicine ,Dissolved Organic Matter ,Waste Management and Disposal ,Mycobiome - Abstract
This study investigated the effects of micro-aerobic conditions on fungal community succession and dissolved organic matter transformation during dairy manure membrane-covered composting. The results showed that lignocellulose degradation in the micro-aerobic composting group (AC: oxygen concentration 5 %) was slower than that in the static composting group (SC: oxygen concentration 1 %), but the dissolved organic carbon in AC was greatly increased. The degree of aromatic polymerization was higher in AC than in SC. But the carboxyl carbon and alcohol/ether biodegradations were faster in SC than in AC, which promoted carbon dioxide and methane emissions, respectively. The relative abundances of pathogenic and dung saprotrophic fungi in AC were 44.6 % and 10.59 % lower than those in SC on day 30, respectively. Moreover, the relative abundance of soil saprotrophs increased by 5.18 % after micro-aerobic composting. Therefore, micro-aerobic conditions improved the quality of compost products by influencing fungal community evolution and dissolved organic matter transformation.
- Published
- 2022
33. Water flow resistance characteristics of double-layer vegetation in different submerged states
- Author
-
Shengtang Zhang, Ying Liu, Xueqin He, Guibao Li, and Zhikai Wang
- Subjects
Double layer (biology) ,010504 meteorology & atmospheric sciences ,Resistance (ecology) ,Water flow ,0208 environmental biotechnology ,Soil science ,02 engineering and technology ,01 natural sciences ,020801 environmental engineering ,medicine ,medicine.symptom ,Vegetation (pathology) ,Geology ,0105 earth and related environmental sciences ,Water Science and Technology - Abstract
In a natural basin, the vegetation can change the slope convergence and affect the surface runoff. Vegetation height may vary in an area, showing a two-layer combination of high and low collocation. This study aimed to understand the effects of double-layer vegetation in different submerged states on flow resistance. Plantings of vegetation at different heights may control landslides and contribute to soil and water conservation. This study explored the water flow resistance characteristics of double-layer vegetation at different heights. A plastic bar was used to simulate rigid vegetation, and an indoor channel fixed bed experiment was used to simulate vegetation with different heights of 5 cm and 7 cm, 5 cm and 8 cm, 5 cm and 9 cm, and 5 cm and 10 cm. By analyzing the relationship between the Darcy–Weisbach resistance coefficient (f) and water depth (h), it was concluded that when the vegetation is in a non-submerged state, f and h satisfy f= 5.6427 h+ 0.0245. When the water depth just submerges the low vegetation, f changes abruptly, and f and h satisfy the relationship f= 3.4075 h + 0.0021. When the water depth is the same as the height of high vegetation, f attains the maximum value. In addition, the flow resistance f increases by 0.03 with a 1 cm increase in the vegetation height h. When the vegetation is completely submerged, f is negatively correlated with h.
- Published
- 2019
34. Litchi-structural core–shell Si@C for high-performance lithium–ion battery anodes
- Author
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Liang Bao, Chunlei Pang, Xueqin He, Jingwei Jiang, He Peng, Yifan Chen, Ning Du, Yuanhong He, Yangfan Lin, Chengmao Xiao, Deren Yang, and Ren Jianguo
- Subjects
Battery (electricity) ,Materials science ,Silicon ,General Chemical Engineering ,General Engineering ,General Physics and Astronomy ,chemistry.chemical_element ,Nanoparticle ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Electrochemistry ,01 natural sciences ,Lithium-ion battery ,Energy storage ,0104 chemical sciences ,Anode ,chemistry ,Chemical engineering ,Electrical resistivity and conductivity ,General Materials Science ,0210 nano-technology - Abstract
Silicon is regarded as the next-generation alternative anode material of lithium–ion battery due to the highest theoretical specific capacity of 4200 mAh g−1. Nevertheless, the drastic volume expansion/shrink (~ 300%) during the lithiation/delithiation process and the poor electrical conductivity obstruct its commercial application. Herein, we report a novel design of litchi-structural Si@C nanoparticles (L-S Si@C) as long cycle life anode material for lithium–ion battery. The L-S Si@C with nanosized (~ 50 nm) SiC dispersed in the inner surface and ~ 6 wt% carbon layer covering the outer surface delivers a specific capacity of 1145 mAh g−1 in the initial cycle and maintains a specific capacity of 570 mAh g−1 after 300th cycling times, which can be attributed to the specially structurally stable L-S Si@C nanoparticles.
- Published
- 2019
35. Effect of different particle-size biochar on methane emissions during pig manure/wheat straw aerobic composting: Insights into pore characterization and microbial mechanisms
- Author
-
Sun Xiaoxi, Lujia Han, Hongjie Yin, Xueqin He, and Guangqun Huang
- Subjects
Methane emissions ,animal structures ,Environmental Engineering ,Swine ,020209 energy ,Bioengineering ,02 engineering and technology ,010501 environmental sciences ,01 natural sciences ,Methane ,Soil ,chemistry.chemical_compound ,Biochar ,0202 electrical engineering, electronic engineering, information engineering ,Animals ,Waste Management and Disposal ,Triticum ,0105 earth and related environmental sciences ,Renewable Energy, Sustainability and the Environment ,Composting ,food and beverages ,X-Ray Microtomography ,General Medicine ,Rice straw ,Straw ,Pulp and paper industry ,Manure ,chemistry ,Charcoal ,Particle size - Abstract
This study explored the effects of different particle sizes of rice straw biochar (RSB) on the methane emissions of pig manure/wheat straw aerobic composting experiments to provide a theoretical suggestion for biochar application. The experiments were conducted with a control group, powder (1 mm) group, and granular (4 mm-1 cm) group. Methane emissions increased by 56.84% in the powder group but decreased by 22.15% in the granular group during the aerobic composting. Methane was generated by methanogens and methanotrophs in the specific anaerobic micro-environment characterized by X-ray micro-computed tomography (micro-CT). The porosity of initial composting samples increased by 4.02% in the granular group but decreased by 3.88% in the powder group. RSB additives typically reduced the mcrA/pmoA ratio and increased the diversity of Bacteria and Archaea. Conclusively, granular biochar benefits to aerobic composting to alleviate the CH
- Published
- 2018
36. Self-propelled nanomotor reconstructs tumor microenvironment through synergistic hypoxia alleviation and glycolysis inhibition for promoted anti-metastasis
- Author
-
Huile Gao, Ruyi Lin, Xiaotong Yang, Huilin Zhang, Wenqi Yu, Yuan Huang, Xueqin He, Yi Qin, Rui Liu, and Chuan Hu
- Subjects
RM1-950 ,Metastasis ,03 medical and health sciences ,Glycolysis Inhibition ,0302 clinical medicine ,Nanomotor ,medicine ,Chemotherapy ,Glycolysis ,Triple negative breast cancer ,General Pharmacology, Toxicology and Pharmaceutics ,Hypoxia ,030304 developmental biology ,0303 health sciences ,Tumor microenvironment ,Enzyme-powered ,Chemistry ,Hypoxia (medical) ,medicine.disease ,Warburg effect ,Metabolic pathway ,Anaerobic glycolysis ,Microenvironment modulation ,030220 oncology & carcinogenesis ,Cancer research ,Aerobic glycolysis ,Original Article ,Therapeutics. Pharmacology ,medicine.symptom ,Anti-metastasis - Abstract
Solid tumors always exhibit local hypoxia, resulting in the high metastasis and inertness to chemotherapy. Reconstruction of hypoxic tumor microenvironment (TME) is considered a potential therapy compared to directly killing tumor cells. However, the insufficient oxygen delivery to deep tumor and the confronting “Warburg effect” compromise the efficacy of hypoxia alleviation. Herein, we construct a cascade enzyme-powered nanomotor (NM-si), which can simultaneously provide sufficient oxygen in deep tumor and inhibit the aerobic glycolysis to potentiate anti-metastasis in chemotherapy. Catalase (Cat) and glucose oxidase (GOx) are co-adsorbed on our previously reported CAuNCs@HA to form self-propelled nanomotor (NM), with hexokinase-2 (HK-2) siRNA further condensed (NM-si). The persistent production of oxygen bubbles from the cascade enzymatic reaction propels NM-si to move forward autonomously and in a controllable direction along H2O2 gradient towards deep tumor, with hypoxia successfully alleviated in the meantime. The autonomous movement also facilitates NM-si with lysosome escaping for efficient HK-2 knockdown to inhibit glycolysis. In vivo results demonstrated a promising anti-metastasis effect of commercially available albumin-bound paclitaxel (PTX@HSA) after pre-treated with NM-si for TME reconstruction. This cascade enzyme-powered nanomotor provides a potential prospect in reversing the hypoxic TME and metabolic pathway for reinforced anti-metastasis of chemotherapy., Graphical abstract The cascade enzyme-powered nanomotor (NM-si) is constructed for tumor microenvironment modulation. Through persistently generating oxygen in deep tumor and inhibiting aerobic glycolysis, the lung metastasis of triple negative breast cancer is successfully inhibited.Image 1
- Published
- 2021
37. An investigation of infrared spectrum of SOF2 and SOF2 based on the density functional theory
- Author
-
Li Long, Qiu Ni, Xueqin He, Qiang Yao, Shiling Zhang, Yulong Miao, Chen Yongtao, and Zhang Ying
- Subjects
Sulfur hexafluoride ,chemistry.chemical_compound ,Materials science ,chemistry ,Infrared ,Mid infrared ,Condition monitoring ,Density functional theory ,Fault (power engineering) ,Absorption (electromagnetic radiation) ,Power equipment ,Computational physics - Abstract
Accurate detection of SF 6 decomposition characteristics components in SF 6 gas insulated equipment is one of the important technical method to realize fault diagnosis and condition monitoring of SF 6 gas insulated equipment. In this paper, based on the density functional theory, the infrared spectrum of SOF2 and SO 2 F 2 , that is two key SF 6 sulfur-containing decomposition characteristics components, were simulated and analyzed. The research found that the infrared spectrum of SOF2 molecule included four main absorption peaks at 485.106 cm−1, 678.479 cm−1, 748.357 cm−1, and 1295.070 cm−1, respectively. And the infrared spectrum of SO 2 F 2 molecule included five main absorption peaks at 501.852 cm−1, 779.442 cm−1, 814.284 cm−1, 1221.181 cm−1, and 1460.246 cm−1, respectively. This study lay a theoretical foundation for fault diagnosis and condition monitoring of SF 6 insulated equipment by mid infrared, and ensure the safety of power equipment.
- Published
- 2020
38. A simulation on Raman spectra of SF6 decomposition characteristic gas: a density functional theory study
- Author
-
Li Long, Qiang Yao, Qiu Ni, Chen Yongtao, Xueqin He, Yulong Miao, Zhang Ying, and Shiling Zhang
- Subjects
Materials science ,Condition monitoring ,Decomposition ,Computational physics ,Sulfur hexafluoride ,chemistry.chemical_compound ,symbols.namesake ,Component analysis ,chemistry ,Partial discharge ,symbols ,Density functional theory ,Raman spectroscopy ,Spectral method - Abstract
SF 6 partial discharge decomposition characteristic component analysis method is one of the most efficient and convenient technology to diagnose latent defects in SF 6 gas insulated equipment. Compared with the traditional SF 6 characteristic decomposition gas detection method, the spectral method has many outstanding advantages, such as non-destructive detection of gas, high detection speed, high precision, and no need for mixed gas separation. However, the Raman characteristics of SF 6 partial discharge decomposition characteristic gas have not been fully clarified. Therefore, based on the density functional theory, the Raman spectra of SOF2 and SO 2 F 2 are calculated, which lays a solid theoretical foundation for SF 6 gas insulated equipment insulation fault diagnosis and condition monitoring method based on spectral technology.
- Published
- 2020
39. The protein corona hampers the transcytosis of transferrin-modified nanoparticles through blood-brain barrier and attenuates their targeting ability to brain tumor
- Author
-
Yang Zhou, Huile Gao, Huilin Zhang, Yuwei Liu, Xueqin He, Yazhen Wang, Wei Xiao, Rou Xie, and Luqing Liang
- Subjects
Biophysics ,Bioengineering ,Protein Corona ,02 engineering and technology ,Blood–brain barrier ,Endocytosis ,Exocytosis ,Biomaterials ,03 medical and health sciences ,medicine ,Humans ,Receptor ,030304 developmental biology ,chemistry.chemical_classification ,0303 health sciences ,Brain Neoplasms ,Transferrin ,Brain ,021001 nanoscience & nanotechnology ,Ligand (biochemistry) ,Cell biology ,medicine.anatomical_structure ,chemistry ,Transcytosis ,Mechanics of Materials ,Blood-Brain Barrier ,Ceramics and Composites ,Nanoparticles ,0210 nano-technology - Abstract
The modification of targeting ligands on nanoparticles (NPs) is anticipated to enhance the delivery of therapeutics to diseased tissues. However, once exposed to the blood stream, NPs can immediately adsorb proteins to form the "protein corona," which may greatly hinder the targeting ligand from binding to its receptor. For brain-targeting delivery, nanotherapeutics must traverse the blood-brain barrier (BBB) to enter the brain parenchyma and then target the diseased cells. However, it remains elusive whether, apart from receptor recognition, the protein corona can affect other processes involved in BBB transcytosis, such as endocytosis, intracellular trafficking, and exocytosis. Furthermore, the targeting ability of NPs toward diseased cells after transcytosis remains unclear. Herein, transferrin (Tf), a brain-targeting ligand, was coupled to NPs to evaluate BBB transcytosis and brain tumor targeting ability. Different impacts of the in vitro and in vivo protein corona on receptor targeting, lysosomal escape, and BBB transcytosis were found. The in vitro protein corona abolished the Tf-mediated effects of the abovementioned processes, whereas the in vivo protein corona attenuated these effects. After crossing the BBB, Tf retained its targeting specificity towards brain tumor cells. Together, these results revealed that several bound apolipoproteins, especially apolipoprotein A-I, may help NPs traverse the BBB, thereby providing novel insights into the development of brain-targeted delivery.
- Published
- 2020
40. Enhanced Electrochemical Properties of LiFePO4 Cathode Using Waterborne Lithiated Ionomer Binder in Li-Ion Batteries with Low Amount
- Author
-
Yue Min, Youyuan Huang, Xiaolong Li, Ren Jianguo, Shu Huang, Rong Liu, Xueqin He, Guohui Yuan, and Yang Bai
- Subjects
Materials science ,Renewable Energy, Sustainability and the Environment ,General Chemical Engineering ,02 engineering and technology ,General Chemistry ,Conductivity ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Electrochemistry ,01 natural sciences ,Lithium-ion battery ,Cathode ,0104 chemical sciences ,Ion ,law.invention ,chemistry.chemical_compound ,Chemical engineering ,chemistry ,law ,Environmental Chemistry ,0210 nano-technology ,Ionomer - Abstract
The poor conductivity of olivine structure LiFePO4 led to inevitable hindered electrochemical performances and restricted their uses in Li-ion batteries. To overcome the problem, introduction of co...
- Published
- 2018
41. Bacterial community succession during pig manure and wheat straw aerobic composting covered with a semi-permeable membrane under slight positive pressure
- Author
-
Xueqin He, Guangqun Huang, Sun Xiaoxi, Shuangshuang Ma, Lujia Han, and Fang Chen
- Subjects
0106 biological sciences ,Environmental Engineering ,Swine ,Bioengineering ,010501 environmental sciences ,complex mixtures ,01 natural sciences ,Soil ,RNA, Ribosomal, 16S ,010608 biotechnology ,Animals ,Organic matter ,Food science ,Waste Management and Disposal ,Triticum ,0105 earth and related environmental sciences ,chemistry.chemical_classification ,Bacteria ,biology ,Renewable Energy, Sustainability and the Environment ,Composting ,fungi ,General Medicine ,Straw ,biology.organism_classification ,Manure ,chemistry ,Fermentation ,Anaerobic bacteria ,Organic fertilizer ,Anaerobic exercise - Abstract
Bacteria play an important role in organic matter degradation and maturity during aerobic composting. This study analyzed composting with or without a membrane cover in laboratory-scale aerobic composting reactor systems. 16S rRNA gene analysis was used to study the bacterial community succession during composting. The richness of the bacterial community decreased and the diversity increased after covering with a semi-permeable membrane and applying a slight positive pressure. Principal components analysis based on operational taxonomic units could distinguish the main composting phases. Linear Discriminant Analysis Effect Size analysis indicated that covering with a semi-permeable membrane reduced the relative abundance of anaerobic Clostridiales and pathogenic Pseudomonas and increased the abundance of Cellvibrionales. In membrane-covered aerobic composting systems, the relative abundance of some bacteria could be affected, especially anaerobic bacteria. Covering could effectively promote fermentation, reduce emissions and ensure organic fertilizer quality.
- Published
- 2018
42. Low addition amount of self-healing ionomer binder for Si/graphite electrodes with enhanced cycling
- Author
-
Xueqin He, Shu Huang, Yang Bai, Youyuan Huang, Ren Jianguo, Guohui Yuan, Rong Liu, Yue Min, and Xiaolong Li
- Subjects
chemistry.chemical_classification ,Silicon ,Chemistry ,chemistry.chemical_element ,02 engineering and technology ,General Chemistry ,Polymer ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Catalysis ,0104 chemical sciences ,Anode ,chemistry.chemical_compound ,Chemical engineering ,Self-healing ,Electrode ,Materials Chemistry ,medicine ,Graphite ,Swelling ,medicine.symptom ,0210 nano-technology ,Ionomer - Abstract
The commercial application of silicon anodes in Li-ion batteries has been seriously hindered by their poor cycling stability because of their huge volume changes during cycling. In this paper a self-healing ionomer binder, as a crosslinked lithiated polymer, is designed and synthesized for Si/graphite anodes with a low binder content of 1.8 wt%. The self-healing ionomer binder can form hydrogen bonds with Si and graphite particles, which can effectively control the swelling of the electrodes and retain the integrity of the electrodes upon cycling. In addition, Li+ in molecule chains can shorten the pathway to the surface of active materials. After cycling, the thickness of the electrodes using a self-healing ionomer binder increases by only about 30%. The self-healing ionomer binder enables enhanced cycling retention and can be used as a significant potential candidate for Si/graphite anodes with a commercial areal capacity of 3 mA h cm−2.
- Published
- 2018
43. Metal-organic frameworks-derived CoMOF-D@Si@C core-shell structure for high-performance lithium-ion battery anode
- Author
-
He Peng, Haojie Yu, Ning Du, Chunlei Pang, Zheng Deng, Deren Yang, Ren Jianguo, Jiyang Liu, Zhilin Yan, Xiao Chengmao, Yangfan Lin, and Xueqin He
- Subjects
Materials science ,Silicon ,General Chemical Engineering ,chemistry.chemical_element ,Chemical vapor deposition ,Conductivity ,Anode ,Chemical engineering ,chemistry ,Electrochemistry ,Pyrolytic carbon ,Carbon ,Current density ,Faraday efficiency - Abstract
Silicon (Si) is considered as the most promising candidate for anode materials in the next-generation lithium-ion batteries (LIBs). Regulating the morphology and structure of Si plays a vital role in alleviating the volume expansion and improving electronic conductivity. Herein, an ingenious core-shell structure (denoted as CoMOF-D@Si@C) is synthesized by depositing Si uniformly on the pyrolytic metal-organic frameworks (MOFs) via chemical vapor deposition (CVD) method and then encapsulated with a carbon shell. The CoMOF-D@Si@C exhibits excellent rate capability and cycle performance, which delivers a high-rate capability of ~957 mAh g−1 at 10 A g−1 and a reversible capacity of 1493 mAh g−1 after 400 cycles. In particular, the capacity is maintained at 648 mAh g−1 after 1200 cycles at a high current density of 4 A g−1 with a rapid increase of the Coulombic efficiency (CE) to 99.8% after only 5 cycles and the average CE (99.7%) in the whole cycling at 4 A g−1. Profiting from the outer carbon shell, uniform Si deposition and inner porous pyrolytic MOF structure, this architecture can maintain structural stability and provide constructive conductivity during cycling processes. The superior electrochemical performance of the CoMOF-D@Si@C composite makes it a promising anode material for LIBs.
- Published
- 2021
44. Nitrogen transformation and dynamic changes in related functional genes during functional-membrane covered aerobic composting
- Author
-
Guangqun Huang, Jinpeng Xiong, Xueqin He, Lujia Han, and Shuangshuang Ma
- Subjects
inorganic chemicals ,0106 biological sciences ,Environmental Engineering ,Nitrogen ,Gene copy ,Nitrous Oxide ,chemistry.chemical_element ,Bioengineering ,Functional genes ,010501 environmental sciences ,engineering.material ,01 natural sciences ,Soil ,Denitrifying bacteria ,010608 biotechnology ,Food science ,Correlation test ,Waste Management and Disposal ,0105 earth and related environmental sciences ,Renewable Energy, Sustainability and the Environment ,Chemistry ,Compost ,Composting ,General Medicine ,equipment and supplies ,Manure ,Transformation (genetics) ,Membrane ,Denitrification ,engineering - Abstract
The effects of functional membrane covering (FMC) on nitrogen transformation and related functional genes during aerobic composting were investigated by performing a comparable experiment. The FMC increased the pile temperature, promoted compost maturity, and decreased nitrogen loss. The FMC reduced NH3 and N2O emissions by 7.34% and 26.27%, respectively. The water film and the micro-positive pressure environment under the membrane effectively prevented NH3 escaping. The FMC up-regulated the amoA gene copy number (promoting NH3/NH4+ oxidation). The reduction of N2O emission by the FMC was mainly related to denitrifying genes (nirK, nirS, and nosZ). The FMC down-regulated the nirK and nirS gene copy numbers, but up-regulated the nosZ gene copy number. Pearson correlation analysis indicated that the functional membrane characteristics and differences between the composting pile environments caused by the FMC significantly affected the nitrogen forms and the related functional genes. The FMC strongly decreased nitrogen emissions and therefore conserved nitrogen.
- Published
- 2021
45. Structure and conductivity enhanced treble-shelled porous silicon as an anode for high-performance lithium-ion batteries
- Author
-
Xueqin He, Ning Du, Chengmao Xiao, He Peng, Chunlei Pang, Yangfan Lin, Jingwei Jiang, Hanqing Lin, Ren Jianguo, and Deren Yang
- Subjects
Materials science ,Silicon ,General Chemical Engineering ,chemistry.chemical_element ,02 engineering and technology ,General Chemistry ,Conductivity ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Porous silicon ,01 natural sciences ,0104 chemical sciences ,Anode ,chemistry ,Chemical engineering ,Lithium ,0210 nano-technology ,Silicon oxide ,Current density ,Layer (electronics) - Abstract
Silicon is regarded as the next generation anode material for lithium-ion batteries because of its high specific capacity, low intercalation potential and abundant reserves. However, huge volume changes during the lithiation and delithiation processes and low electrical conductivity obstruct the practical applications of silicon anodes. In this study, a treble-shelled porous silicon (TS-P-Si) structure was synthesized via a three-step approach. The TS-P-Si anode delivered a capacity of 858.94 mA h g−1 and a capacity retention of 87.8% (753.99 mA h g−1) after being subjected to 400 cycles at a current density of 400 mA g−1. The good cycling performance was due to the unique structure of the inner silicon oxide layer, middle silver nano-particle layer and outer carbon layer, leading to a good conductivity and a decreased volume change of this silicon-based anode.
- Published
- 2019
46. Metagenomic and q-PCR analysis reveals the effect of powder bamboo biochar on nitrous oxide and ammonia emissions during aerobic composting
- Author
-
Hongjie Yin, Guangqun Huang, Zengling Yang, Fang Chen, Lujia Han, Xueqin He, and Jinpeng Xiong
- Subjects
inorganic chemicals ,0106 biological sciences ,Environmental Engineering ,Nitrous Oxide ,Bioengineering ,010501 environmental sciences ,Polymerase Chain Reaction ,01 natural sciences ,Soil ,Denitrifying bacteria ,Ammonia ,chemistry.chemical_compound ,010608 biotechnology ,Biochar ,Food science ,Nitrite ,Waste Management and Disposal ,Nitrogen cycle ,0105 earth and related environmental sciences ,Renewable Energy, Sustainability and the Environment ,Composting ,Glutamate dehydrogenase ,General Medicine ,equipment and supplies ,Nitrite reductase ,chemistry ,Charcoal ,Denitrification ,Metagenome ,Hydroxylamine reductase ,Powders ,Sasa - Abstract
To investigate the emission mechanism of ammonia (NH3) and nitrous oxide (N2O) during aerobic composting and the influence of powder bamboo biochar (PBB) on this process, this paper conducted a systematic study on the nitrogen-transforming functional microbial community, including functional genes, microbial structure and metabolism pathways. PBB reduced N2O and NH3 emissions by 1.25%-8.72% and 10.4%-11.8%, respectively. The quantitative PCR results indicated that the reduced N2O emission by PBB were mainly related to denitrifying genes (nirS, nirK, nosZ, and narG). The metagenome results demonstrated that Nitrosococcus was the main genus that could oxidize ammonia to nitrite decreased by PBB. The PBB significantly affected the nitrogen metabolism pathway, reduced the activity of glutamate dehydrogenase to inhibit the formation of NH4+ to reduce NH3 emission. The higher N2O emission in the control group was also related to the higher relative contents of hydroxylamine reductase and nitrite reductase.
- Published
- 2021
47. Metformin Mediated PD‐L1 Downregulation in Combination with Photodynamic‐Immunotherapy for Treatment of Breast Cancer
- Author
-
Lin Qin, Yuan Huang, Xiaotong Yang, Chuan Hu, Yuxiu Chen, Huile Gao, Tao Gong, Ting Lei, Xueqin He, and Yang Zhou
- Subjects
Materials science ,biology ,medicine.medical_treatment ,Immunotherapy ,Condensed Matter Physics ,medicine.disease ,Electronic, Optical and Magnetic Materials ,Metformin ,Biomaterials ,Breast cancer ,Downregulation and upregulation ,PD-L1 ,Electrochemistry ,Cancer research ,biology.protein ,medicine ,medicine.drug - Published
- 2021
48. A multi-scale biomechanical model based on the physiological structure and lignocellulose components of wheat straw
- Author
-
Lujia Han, Xueqin He, Longjian Chen, and Li Aiwei
- Subjects
Models, Molecular ,Materials science ,Polymers and Plastics ,Finite Element Analysis ,Organic Chemistry ,Straw ,Lignin ,Biomechanical Phenomena ,Stress (mechanics) ,chemistry.chemical_compound ,Cellulose fiber ,chemistry ,Tensile Strength ,Ultimate tensile strength ,Carbohydrate Conformation ,Materials Chemistry ,Stress, Mechanical ,Microfibril ,Cellulose ,Composite material ,Triticum ,Mechanical Phenomena - Abstract
Biomechanical behavior is a fundamental property for the efficient utilization of wheat straw in such applications as fuel and renewable materials. Tensile experiments and lignocellulose analyses were performed on three types of wheat straw. A multi-scale finite element model composed of the microscopic model of the microfibril equivalent volume element and the macroscopic model of straw tissue was proposed based on the physiological structure and lignocellulose components of wheat straw. The tensile properties of wheat straw were simulated by ANSYS software. The predicted stress-strain data were compared with the observed data, and good correspondence was achieved for all three types of wheat straw. The validated multi-scale finite-element (FE) model was then used to investigate the effect of the lignocellulose components on the biomechanical properties of wheat straw. More than 80% of stress is carried by the cellulose fiber, whereas the strain is mainly carried by the amorphous cellulose.
- Published
- 2015
49. Endo/Lysosome‐Escapable Delivery Depot for Improving BBB Transcytosis and Neuron Targeted Therapy of Alzheimer's Disease
- Author
-
Chuanyao Yang, Rongsheng Tong, Zhihang Yang, Yuwei Liu, Ting Lei, Huile Gao, Xueqin He, Rou Xie, Lulu Cai, and Wenfeng Jia
- Subjects
Materials science ,Depot ,medicine.medical_treatment ,Disease ,Pharmacology ,Condensed Matter Physics ,Electronic, Optical and Magnetic Materials ,Targeted therapy ,Biomaterials ,medicine.anatomical_structure ,Transcytosis ,Lysosome ,Electrochemistry ,medicine ,Neuron - Published
- 2020
50. Effects of biochar size and type on gaseous emissions during pig manure/wheat straw aerobic composting: Insights into multivariate-microscale characterization and microbial mechanism
- Author
-
Xueqin He, Cui Ruxiu, Guangqun Huang, Lujia Han, Hongjie Yin, and Fang Chen
- Subjects
0106 biological sciences ,Bamboo ,Environmental Engineering ,Swine ,Bioengineering ,010501 environmental sciences ,engineering.material ,01 natural sciences ,Methylococcaceae ,Denitrifying bacteria ,Ammonia ,010608 biotechnology ,Biochar ,Animals ,Waste Management and Disposal ,Triticum ,0105 earth and related environmental sciences ,biology ,Renewable Energy, Sustainability and the Environment ,Compost ,Chemistry ,Composting ,Oryza ,General Medicine ,Straw ,biology.organism_classification ,Manure ,Aerobiosis ,Greenhouse gas ,Environmental chemistry ,Charcoal ,engineering ,Denitrification ,Gases - Abstract
Greenhouse gas and ammonia emissions during composting with different biochar types and particle sizes were investigated. Compared with powder-biochar, granular-biochar improved pore connectivity and was benefit to methanotrophs activities, like Methylococcaceae, reducing CH4 emissions. At the same particle size, bamboo biochar (BB) had a higher pore volume and more aerobic microenvironment within the compost than rice straw biochar (RSB), reducing GHG emissions. Bamboo biochar had high aromatic compound and NO3- concentrations and therefore surface π-π electron donor/acceptor interactions, causing low N2O emissions and inhibiting denitrifying bacteria (e.g., Bacteroidales). More CO and CO bonds in rice straw biochar than bamboo biochar caused lower NH3 emissions using rice straw than bamboo biochar. Powdered biochar had more exposed reactive functional groups and decreased NH3 production better than granular biochar. Powdered bamboo biochar controls gaseous emissions better than other biochars during aerobic pig manure/wheat straw composting.
- Published
- 2018
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