LIVIVO - Search results -

Search results

Result 1 - 10 of total 4024

Search options

Article ; Online: Investigation on the Distribution of Yimin Lignite Pyrolysis Products and the Stability of its Char.

Lei, Zhang / Jin, Shang / Hao, Shu / Yang, Jia / Wei, Kuang / De, Tian / Weiwei, Xie

ACS omega

2021 Volume 6, Issue 22, Page(s) 13953–13961

Abstract: This paper introduces the utilization of lignite in China and abroad and studies the influence of different process conditions on the pyrolysis products of lignite. The effects of pyrolysis temperature, residence time, and heating rate on the yield and ... ...

Abstract	This paper introduces the utilization of lignite in China and abroad and studies the influence of different process conditions on the pyrolysis products of lignite. The effects of pyrolysis temperature, residence time, and heating rate on the yield and stability of pyrolysis products were studied by standard lattice low-temperature distillation of coal. The results showed that the final pyrolysis temperature of lignite increases gradually, which is a key factor affecting the pyrolysis performance of lignite. At the same time, the combustible gas yield and tar yield were also significantly improved. Semichar yield and semichar volatile content showed a downward trend. From the range of pyrolysis products, the heating rate also has an important influence on the pyrolysis performance of lignite. Through the thermal stability test of lignite, it is concluded that the particle size distribution of carbon black products is not significantly different, and most of the coal particles are mainly distributed in the range of more than 6 mm.
Language	English
Publishing date	2021-05-21
Publishing country	United States
Document type	Journal Article
ISSN	2470-1343
ISSN (online)	2470-1343
DOI	10.1021/acsomega.0c05204
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Investigation on the Distribution of Yimin Lignite Pyrolysis Products and the Stability of its Char

Zhang Lei / Shang Jin / Shu Hao / Jia Yang / Kuang Wei / Tian De / Xie Weiwei

ACS Omega, Vol 6, Iss 22, Pp 13953-

2021 Volume 13961

Keywords	Chemistry ; QD1-999
Language	English
Publishing date	2021-05-01T00:00:00Z
Publisher	American Chemical Society
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article: [Prescription of Jingdan Yimin for treatment of metabolic syndrome].

Tian, Jin-Ying / Zhou, Ying / Chen, Ling / Li, Xiu-Li / Zhang, Xiao-Lin / Han, Jing / Liu, Qian / Yang, Ya-Nan / Feng, Zi-Ming / Zhang, Pei-Cheng / Ye, Fei

Zhongguo Zhong yao za zhi = Zhongguo zhongyao zazhi = China journal of Chinese materia medica

2016 Volume 41, Issue 2, Page(s) 272–278

Abstract: ... such as molecular targets in vitro and effects in vivo were used to study the prescription of Jingdan Yimin(JD ...

Abstract	Based on the theory of traditional Chinese medicine, modern methods for drug investigation such as molecular targets in vitro and effects in vivo were used to study the prescription of Jingdan Yimin(JD), including selection of raw materials, composition, proportion, and effective dose of the compounds for treatment of metabolic syndrome. The IRF mice models, characterized by insulin resistance and hypercholesterolemia, were induced by high fat diet. The insulin sensitivity was estimated with insulin tolerance test(ITT) and glucose tolerance test(GTT); the levels of blood glucose and total cholesterol(TC), and the activities of α-glucosidase, protein tyrosine phosphatase 1B(PTP1B), and fructose phosphate amide transferase(GFAT)were measured with biochemical methods, respectively. The sample H13(h) extracted from Rhodiola crenulata, Y12(y) from Cordyceps militaris, and D(d) from Rheum palmatum were selected according to the inhibition activity on both PTP1B and α-glucosidase in vitro, regulation on hypercholesterolemia in IRF mice, and effects on GFAT activity, respectively; their synergistic effects on the treatment of metabolic syndrome were determined in IRF mice; composition proportion of h∶y∶d was measured in accordance with the results of L8(27) orthogonal experiments targeting on the inhibition of both PTP1B and α-glucosidase; finally, the effective dose was assessed based on the effects on IGT and hypercholesterolemia, respectively, in IRF mice. In conclusion, the prescription JD is composed by R. crenulata, C. militaris, and R. palmatum with the rate of 20∶1∶1, and its effective oral dose is 200 mg•kg⁻¹ for treatment of metabolic syndrome; its main mechanism is to inhibit the targets PTP1B and α-glucosidase. Monarch drug, R. crenulata, can clear away the lung-heat, tonify Qi, resolve stasis and nourish the heart. Adjuvant drug, C. militaris, can tonify the lung Qi and the kidney essence, strengthen waist and knee, accompanied with R. crenulata to enhance the function of invigorating lung and kidney. Assistant drug, rhubarb, can clear heat, detoxify, and remove blood stasis. These three herbs are compatible to show the effects of tonifying Qi, nourishing essence, clearing heat, reducing phlegm and resolving masses for the treatment of metabolic syndrome.
MeSH term(s)	Animals ; Blood Glucose/metabolism ; Cordyceps/chemistry ; Drugs, Chinese Herbal/administration & dosage ; Drugs, Chinese Herbal/chemistry ; Humans ; Insulin Resistance ; Male ; Metabolic Syndrome/drug therapy ; Metabolic Syndrome/genetics ; Metabolic Syndrome/metabolism ; Mice, Inbred C57BL ; Protein Tyrosine Phosphatase, Non-Receptor Type 1/genetics ; Protein Tyrosine Phosphatase, Non-Receptor Type 1/metabolism ; Rheum/chemistry ; Rhodiola/chemistry
Chemical Substances	Blood Glucose ; Drugs, Chinese Herbal ; Protein Tyrosine Phosphatase, Non-Receptor Type 1 (EC 3.1.3.48)
Language	Chinese
Publishing date	2016-01
Publishing country	China
Document type	Journal Article
ZDB-ID	1004649-5
ISSN	1001-5302 ; 0254-0029
ISSN	1001-5302 ; 0254-0029
DOI	10.4268/cjcmm20160218
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 3056: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (2.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article: Production forecast analysis of BP neural network based on Yimin lignite supercritical water gasification experiment results

Zhang, Bowei / Guo, Simao / Jin, Hui

Energy. 2022 May 01, v. 246

2022

Abstract: ... experiment of Yimin lignite and discussed the effects of temperature, concentration and residence time ...

Abstract	In the future coal gasification industry, quick and accurate prediction of the gas products can guide industrial production and make production more efficient. This paper carried out the SCWG experiment of Yimin lignite and discussed the effects of temperature, concentration and residence time on gasification. After that, the experimental data were divided into a training set, validation set, and test set according to a ratio of 70%, 15%, and 15%. Then, the regression was performed in the BP neural network, and the number of hidden layers, linear fitting model, and MIV were discussed. The results show that the single-layer neural network has a better fitting effect than the two-layer neural network. The R² of the ANN model for the products is 0.9921, the RMSE is 0.2952, the MeanRE is 0.0673, and the MaxRE is 0.1957, which is far better than the linear regression. In addition, the mean impact value of temperature, residence time, and concentration is 0.7493, 0.2188, and −0.1051, which shows temperature is the most critical variable.
Keywords	coal gasification ; energy ; industry ; lignite ; neural networks ; prediction ; regression analysis ; temperature
Language	English
Dates of publication	2022-0501
Publishing place	Elsevier Ltd
Document type	Article
ZDB-ID	2019804-8
ISSN	0360-5442 ; 0360-5442
ISSN (online)	0360-5442
ISSN	0360-5442
DOI	10.1016/j.energy.2022.123306
Database	NAL-Catalogue (AGRICOLA)

Order via subito

Article ; Online: Life cycle assessment of opencast coal mine production: a case study in Yimin mining area in China.

Zhang, Li / Wang, Jinman / Feng, Yu

Environmental science and pollution research international

2018 Volume 25, Issue 9, Page(s) 8475–8486

Abstract: ... including land reclamation stage using life cycle assessment (LCA) method. The Yimin opencast coal mine was ... global warming were mainly affected in mining stage in Yimin opencast coal mine based on comprehensive analysis ...

Abstract	China has the largest coal production in the world due to abundant resource requirements for economic development. In recent years, the proportion of opencast coal mine production has increased significantly in China. Opencast coal mining can lead to a large number of environmental problems, including air pollution, water pollution, and solid waste occupation. The previous studies on the environmental impacts of opencast coal mine production were focused on a single production process. Moreover, mined land reclamation was an important process in opencast coal mine production; however, it was rarely considered in previous research. Therefore, this study attempted to perform a whole environmental impact analysis including land reclamation stage using life cycle assessment (LCA) method. The Yimin opencast coal mine was selected to conduct a case study. The production of 100 tons of coal was used as the functional unit to evaluate the environmental risks in the stages of stripping, mining, transportation, processing, and reclamation. A total of six environmental impact categories, i.e., resource consumption, acidification, global warming, solid waste, eutrophication, and dust, were selected to conduct this assessment. The contribution rates of different categories of environmental impacts were significantly different, and different stages exhibited different consumption and emissions that gave rise to different environmental effects. Dust was the most serious environmental impact category, and its contribution rate was 36.81%, followed by global warming and acidification with contribution rates of 29.43% and 22.58%, respectively. Both dust and global warming were mainly affected in mining stage in Yimin opencast coal mine based on comprehensive analysis of environmental impact. Some economic and feasible measures should be used to mitigate the environmental impacts of opencast coal mine production, such as water spraying, clean transportation, increasing processing efficiency, and improving mining technologies. This study can be considered as a useful reference for a deeper understanding of key environmental impacts related to the whole coal production in opencast coal mine.
MeSH term(s)	Air Pollution/analysis ; China ; Coal/analysis ; Coal Mining/methods ; Dust/analysis ; Environmental Monitoring/methods ; Environmental Pollution/analysis ; Environmental Pollution/prevention & control ; Global Warming
Chemical Substances	Coal ; Dust
Language	English
Publishing date	2018-01-06
Publishing country	Germany
Document type	Journal Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-017-1169-6
Database	MEDical Literature Analysis and Retrieval System OnLINE

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 5915: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

Article: Evaluation of groundwater pollution in a mining area using analytical solution: a case study of the Yimin open-pit mine in China.

Li, Tianxin / Li, Li / Song, Hongqing / Meng, Linglong / Zhang, Shuli / Huang, Gang

SpringerPlus

2016 Volume 5, Page(s) 392

Abstract: ... description: The Yimin open-pit mine is located in the northern part of the Inner Mongolia Autonomous Region ... of China. High concentrations of iron and manganese are observed in Yimin open-pit ... increased.: Conclusions: The suitable flow rate of single well should be <380 m/day at Yimin open-pit ...

Abstract	Introduction: This study focused on using analytical and numerical models to develop and manage groundwater resources, and predict the effects of management measurements in the groundwater system. Movement of contaminants can be studied based on groundwater flow characteristics. This study can be used for prediction of ion concentration and evaluation of groundwater pollution as the theoretical basis. Case description: The Yimin open-pit mine is located in the northern part of the Inner Mongolia Autonomous Region of China. High concentrations of iron and manganese are observed in Yimin open-pit mine because of exploitation and pumping that have increased the concentration of the ions in groundwater. In this study, iron was considered as an index of contamination, and the solute model was calibrated using concentration observations from 14 wells in 2014. Discussion and evaluation: The groundwater flow model and analytical solutions were used in this study to forecast pollution concentration and variation trend after calibration. With continuous pumping, contaminants will migrate, and become enriched, towards the wellhead in the flow direction. The concentration of the contaminants and the range of pollution increase with the flow rate increased. Conclusions: The suitable flow rate of single well should be <380 m/day at Yimin open-pit for the standard value of pollution concentration.
Language	English
Publishing date	2016-03-31
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2661116-8
ISSN	2193-1801
ISSN	2193-1801
DOI	10.1186/s40064-016-2023-x
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article: Life cycle assessment of opencast coal mine production: a case study in Yimin mining area in China

Zhang, Li / Jinman Wang / Yu Feng

Environmental science and pollution research international. 2018 Mar., v. 25, no. 9

2018

Abstract	China has the largest coal production in the world due to abundant resource requirements for economic development. In recent years, the proportion of opencast coal mine production has increased significantly in China. Opencast coal mining can lead to a large number of environmental problems, including air pollution, water pollution, and solid waste occupation. The previous studies on the environmental impacts of opencast coal mine production were focused on a single production process. Moreover, mined land reclamation was an important process in opencast coal mine production; however, it was rarely considered in previous research. Therefore, this study attempted to perform a whole environmental impact analysis including land reclamation stage using life cycle assessment (LCA) method. The Yimin opencast coal mine was selected to conduct a case study. The production of 100 tons of coal was used as the functional unit to evaluate the environmental risks in the stages of stripping, mining, transportation, processing, and reclamation. A total of six environmental impact categories, i.e., resource consumption, acidification, global warming, solid waste, eutrophication, and dust, were selected to conduct this assessment. The contribution rates of different categories of environmental impacts were significantly different, and different stages exhibited different consumption and emissions that gave rise to different environmental effects. Dust was the most serious environmental impact category, and its contribution rate was 36.81%, followed by global warming and acidification with contribution rates of 29.43% and 22.58%, respectively. Both dust and global warming were mainly affected in mining stage in Yimin opencast coal mine based on comprehensive analysis of environmental impact. Some economic and feasible measures should be used to mitigate the environmental impacts of opencast coal mine production, such as water spraying, clean transportation, increasing processing efficiency, and improving mining technologies. This study can be considered as a useful reference for a deeper understanding of key environmental impacts related to the whole coal production in opencast coal mine.
Keywords	acidification ; air pollution ; case studies ; coal ; dust ; economic development ; emissions ; environmental impact ; eutrophication ; global warming ; land restoration ; life cycle assessment ; mining ; risk ; solid wastes ; spraying ; transportation ; water pollution ; China
Language	English
Dates of publication	2018-03
Size	p. 8475-8486.
Publishing place	Springer Berlin Heidelberg
Document type	Article
ZDB-ID	1178791-0
ISSN	1614-7499 ; 0944-1344
ISSN (online)	1614-7499
ISSN	0944-1344
DOI	10.1007/s11356-017-1169-6
Database	NAL-Catalogue (AGRICOLA)

In stock of ZB MED Bonn / Germany

Z 5915: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾
- See ZB MED holdings
- Order with fees

Article: A case of colonic muco-submucosal elongated polyp (CMSEP) misdiagnosed as a inverted colonic diverticulum (ICD).

Ma, Yimin / Zhang, Kangwei / Cao, Youhong

Revista espanola de enfermedades digestivas

2024

Abstract: CMSEP is a large intestine polyp with a long and broad stalk and a "worm-like" appearance which is covered by normal mucosa. The submucosal layer consists of edematous and fibrotic interstitium, adipose tissue, dilated blood vessels, and lymphatic ... ...

Abstract	CMSEP is a large intestine polyp with a long and broad stalk and a "worm-like" appearance which is covered by normal mucosa. The submucosal layer consists of edematous and fibrotic interstitium, adipose tissue, dilated blood vessels, and lymphatic follicles[1]. Endoscopic magnification of the mucosal surface showed a uniform honeycomb pattern of regular blood vessels, with soft and deformable "folds" and "gyrus" at the top. The exact pathogenesis of CMSEP is still unclear.
Language	English
Publishing date	2024-01-11
Publishing country	Spain
Document type	Journal Article
ZDB-ID	1070381-0
ISSN	1130-0108 ; 0212-7512
ISSN	1130-0108 ; 0212-7512
DOI	10.17235/reed.2024.10153/2023
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.B 199: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Analysis and multiple index evaluation of SPO distribution of bone traction needles for pelvic fracture reduction.

Yimin, Wei / Jingtao, Lei / Lei, Hu / Lihai, Zhang

Medical engineering & physics

2023 Volume 119, Page(s) 104031

Abstract: For robot-assisted pelvic fracture reduction, at least two bone needles need to be inserted into the ilium of the affected pelvis, and the robot clamping device is connected with the bone needles. The biomechanical properties of the pelvic ... ...

Abstract	For robot-assisted pelvic fracture reduction, at least two bone needles need to be inserted into the ilium of the affected pelvis, and the robot clamping device is connected with the bone needles. The biomechanical properties of the pelvic musculoskeletal tissues are different with the different Spatial Position and Orientation (SPO) of the bone needles. In order to determine the optimal SPO of bone needle pairs, the constraints between the bone needles and the pelvis are analyzed, and the SPO vectors of 150 groups bone needles are obtained by the KNN-hierarchical clustering method; a batch modeling method of bone needles with different SPO is proposed. 150 finite element models of damaged pelvic musculoskeletal tissue with different SPO of bone needles are established and simulated. The stress and strain distribution homogenization of musculoskeletal tissue with bone needles as evaluation index, the simulation results of 150 models are evaluated. Results show that, the anterior superior iliac spine and the anterior inferior iliac spine are suitable regions to place bone needles in the pelvis, and the optimal distribution of the needle combination is found in this region. The overall stress and strain distribution of the damaged pelvic musculoskeletal tissue under the large reduction force is the best.
MeSH term(s)	Humans ; Traction ; Needles ; Pelvis ; Fractures, Bone ; Fracture Fixation
Language	English
Publishing date	2023-07-23
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1181080-4
ISSN	1873-4030 ; 1350-4533
ISSN (online)	1873-4030
ISSN	1350-4533
DOI	10.1016/j.medengphy.2023.104031
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.B 2231: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: A Preliminary Study on the Morphological Changes of an NiTi-Shaped Memory Alloy Stent in the Vertebral Body.

Qiaoling, Li / Zhiwei, Ren / Bobo, Zhang / Yimin, Yang

Orthopaedic surgery

2023 Volume 15, Issue 4, Page(s) 1028–1036

Abstract: Objective: At present, the most commonly used filler polymethyl methacrylate (PMMA) has the disadvantages of monomer toxicity, heat and leakage, and cannot be applied in young people. Therefore, finding a minimally invasive and good tissue-compatible ... ...

Abstract	Objective: At present, the most commonly used filler polymethyl methacrylate (PMMA) has the disadvantages of monomer toxicity, heat and leakage, and cannot be applied in young people. Therefore, finding a minimally invasive and good tissue-compatible alternative material has been a research hotspot in spine surgery in recent years. The aim of this study is to explore whether the memory alloy stent can avoid the complications of bone cement or not. Methods: Four non-adjacent vertebral bodies of the thoracic and lumbar spine in the 18 10-month-old pigs were selected as the surgical site and were randomly divided into the scaffold group and the bone cement group. The memory alloy scaffold and PMMA (polymethyl methacrylate) bone cement were placed via percutaneous puncture, and intraoperative fluoroscopy and micro-CT were used to observe the changes in the height of scaffolds and bone cement in the vertebral body immediately, 6 weeks, and 12 weeks after operation, the microstructural parameters of the bone trabeculae (bone volume fraction, bone surface volume ratio, bone trabeculae number) were also measured. Results: The memory alloy stent could expand in the vertebral body, and its height gradually increased with time; additionally, the height of the bone cement mass did not change with time (p = 0.00). New bone trabeculae could grow into the scaffold along the gap, and the volume fraction of bone, the volume ratio of bone surface area, and the number of bone trabeculae increased gradually (p = 0.00). However, the volume fraction of bone, the volume ratio of bone surface area, and the number of trabeculae in the cement block decreased gradually (p = 0.00). Conclusions: Memory alloy scaffolds have dynamic expansion characteristics in vivo, which can effectively avoid the complications of bone cement. Thus, it is beneficial to explore this minimally invasive treatment for vertebral compression fractures.
MeSH term(s)	Animals ; Bone Cements ; Fractures, Compression/surgery ; Kyphoplasty ; Lumbar Vertebrae/surgery ; Lumbar Vertebrae/injuries ; Osteoporotic Fractures/surgery ; Polymethyl Methacrylate/chemistry ; Retrospective Studies ; Shape Memory Alloys ; Spinal Fractures/surgery ; Spinal Fractures/etiology ; Swine ; Treatment Outcome ; Vertebral Body ; Vertebroplasty
Chemical Substances	Bone Cements ; Polymethyl Methacrylate (9011-14-7) ; Shape Memory Alloys
Language	English
Publishing date	2023-02-16
Publishing country	Australia
Document type	Journal Article ; Randomized Controlled Trial, Veterinary
ZDB-ID	2503162-4
ISSN	1757-7861 ; 1757-7853 ; 1757-7861
ISSN (online)	1757-7861 ; 1757-7853
ISSN	1757-7861
DOI	10.1111/os.13680
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 6786: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
ab Jg. 2022: Lesesaal (EG)

Order via subito

Details ▾
- See ZB MED holdings
- Order with fees

To top

More links

Kategorien

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Inter-library loan at ZB MED

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

Order via subito

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito