scholarly journals Study on Electrostatic Preparation High-Ash Coal from China Using Roll-Type Electrostatic Separator and the Combustion Characteristics of the Cleaned Coal

Processes ◽  
2021 ◽  
Vol 9 (7) ◽  
pp. 1139
Author(s):  
Chengyuan Liu ◽  
Qingyue Wang
Keyword(s):  
Inner Mongolia ◽  
Northern China ◽  
Gas Analysis ◽  
Combustion Characteristics ◽  
Low Grade ◽  
Clean Coal ◽  
Coal Beneficiation ◽  
Characteristics Analysis ◽  
Roll Type ◽  
High Ash Coal

The dry roll-type electrostatic coal beneficiation technology under high voltage is used to study the beneficiation of low-grade and high-ash coal in Inner Mongolia, northern China. The optimal coal beneficiation conditions are determined by adjusting three parameters: the electrode voltage, the distance between the electrode and the drum, and the angle θ of the electrode. The best quality clean coal is obtained under the condition of voltage of 30 kV, angle θ of 75°, and electrode distance of 7 cm. Moreover, after separation, the quality of clean coal accounted for 48.41% of the raw coal mass, while the ash ratio decreased from 38.6% of the raw coal to 18.71% of the clean coal, which significantly improves the coal usability. Finally, through the methods of combustion characteristics analysis, infrared spectrum analysis, and combustion exhaust gas analysis of raw and clean coal, it is proven that the roll-type electrostatic separation technology has a high coal beneficiation effect on the high-ash, low-grade coal in Inner Mongolia.

scholarly journals Bacterial Succession Pattern during the Fermentation Process in Whole-Plant Corn Silage Processed in Different Geographical Areas of Northern China

Processes ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 900
Author(s):  
Chao Wang ◽  
Hongyan Han ◽  
Lin Sun ◽  
Na Na ◽  
Haiwen Xu ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Bacterial Community ◽  
Inner Mongolia ◽  
Northern China ◽  
Ammonia Nitrogen ◽  
Corn Silage ◽  
Shanxi Province ◽  
Whole Plant ◽  
Bacterial Succession ◽  
Fermentation Quality

Whole-plant corn silage is a predominant forage for livestock that is processed in Heilongjiang province (Daqing city and Longjiang county), Inner Mongolia Autonomous Region (Helin county and Tumet Left Banner) and Shanxi province (Taigu and Shanyin counties) of North China; it was sampled at 0, 5, 14, 45 and 90 days after ensiling. Bacterial community and fermentation quality were analysed. During fermentation, the pH was reduced to below 4.0, lactic acid increased to above 73 g/kg DM (p < 0.05) and Lactobacillus dominated the bacterial community and had a reducing abundance after 14 days. In the final silages, butyric acid was not detected, and the contents of acetic acid and ammonia nitrogen were below 35 g/kg DM and 100 g/kg total nitrogen, respectively. Compared with silages from Heilongjiang and Inner Mongolia, silages from Shanxi contained less Lactobacillus and more Leuconostoc (p < 0.05), and had a separating bacterial community from 14 to 90 days. Lactobacillus was negatively correlated with pH in all the silages (p < 0.05), and positively correlated with lactic and acetic acid in silages from Heilongjiang and Inner Mongolia (p < 0.05). The results show that the final silages had satisfactory fermentation quality. During the ensilage process, silages from Heilongjiang and Inner Mongolia had similar bacterial-succession patterns; the activity of Lactobacillus formed and maintained good fermentation quality in whole-plant corn silage.

Shimao culture: naming, distribution, and chronology

2021 ◽  
Vol 21 (1) ◽  
pp. 144-150
Author(s):  
Zhouyong Sun ◽  
Jing Shao ◽  
Nan Di
Keyword(s):  
Inner Mongolia ◽  
Northern China ◽  
Distribution Area ◽  
Central Plains ◽  
Archaeological Data ◽  
Absolute Dating ◽  
Northern Shaanxi ◽  
The Absolute ◽  
Three Phases

Abstract By synthesizing previous studies and the most updated archaeological data by typical stratigraphic contexts and assemblages, Hetao region cultural remains represented by li-tripods with double-handles should be considered part of the Shimao culture. With its core distribution area spanning from northern Shaanxi to central-northern Shanxi to central-southern Inner Mongolia, the development of Shimao culture can be divided into three phases: early, middle, and late. The absolute dating of the Shimao culture ranges from approximately 2300 BCE to 1800 BCE. The Shimao culture was therefore a major late Longshan archaeological culture in northern China that stands apart from its peers in the Central Plains.

scholarly journals Diet quality is associated with reduced risk of hypertension among Inner Mongolia adults in northern China

2019 ◽  
Vol 23 (9) ◽  
pp. 1543-1554 ◽  
Author(s):  
Xuemei Wang ◽  
Aiping Liu ◽  
Maolin Du ◽  
Jing Wu ◽  
Wenrui Wang ◽  
...  
Keyword(s):  
Generalized Linear Models ◽  
Dietary Patterns ◽  
Dietary Pattern ◽  
Inner Mongolia ◽  
Linear Models ◽  
Protein Pattern ◽  
Northern China ◽  
High Protein ◽  
Cross Sectional ◽  
Increased Risk

AbstractObjective:The present study investigated the association between dietary patterns and hypertension applying the Chinese Dietary Balance Index-07 (DBI-07).Design:A cross-sectional study on adult nutrition and chronic disease in Inner Mongolia. Dietary data were collected using 24 h recall over three consecutive days and weighing method. Dietary patterns were identified using principal components analysis. Generalized linear models and multivariate logistic regression models were used to examine the associations between DBI-07 and dietary patterns, and between dietary patterns and hypertension.Setting:Inner Mongolia (n 1861).Participants:A representative sample of adults aged ≥18 years in Inner Mongolia.Results:Four major dietary patterns were identified: ‘high protein’, ‘traditional northern’, ‘modern’ and ‘condiments’. Generalized linear models showed higher factor scores in the ‘high protein’ pattern were associated with lower DBI-07 (βLBS = −1·993, βHBS = −0·206, βDQD = −2·199; all P < 0·001); the opposite in the ‘condiments’ pattern (βLBS = 0·967, βHBS = 0·751, βDQD = 1·718; all P < 0·001). OR for hypertension in the highest quartile of the ‘high protein’ pattern compared with the lowest was 0·374 (95 % CI 0·244, 0·573; Ptrend < 0·001) in males. OR for hypertension in the ‘condiments’ pattern was 1·663 (95 % CI 1·113, 2·483; Ptrend < 0·001) in males, 1·788 (95 % CI 1·155, 2·766; Ptrend < 0·001) in females.Conclusions:Our findings suggested a higher-quality dietary pattern evaluated by DBI-07 was related to decreased risk for hypertension, whereas a lower-quality dietary pattern was related to increased risk for hypertension in Inner Mongolia.

Actual mercury speciation and mercury discharges from coal-fired power plants in Inner Mongolia, Northern China

Fuel ◽  
2016 ◽  
Vol 180 ◽  
pp. 194-204 ◽  
Author(s):  
Shunlin Tang ◽  
Lina Wang ◽  
Xinbin Feng ◽  
Zhaohui Feng ◽  
Ruiyang Li ◽  
...  
Keyword(s):  
Inner Mongolia ◽  
Power Plants ◽  
Northern China ◽  
Mercury Speciation

Oxidative alteration of Ce-rich pyrochlore: HRTEM/EELS investigation

1999 ◽  
Vol 556 ◽  
Author(s):  
Huifang Xu ◽  
Yifeng Wang
Keyword(s):  
Inner Mongolia ◽  
Diffusion Processes ◽  
Northern China ◽  
Alpha Decay ◽  
Daughter Product ◽  
Ore Deposit ◽  
Transmission Electron ◽  
Abundant Element ◽  
Electron Energy Loss ◽  
Aqueous Species

AbstractTransmission electron microscopy (TEM) and associated electron energy-loss spectroscopy (EELS) study show intergrowth of Ce4+-rich pyrochlore (metamict) and Ce3+-rich pyrochlore (partially metamict) in a Ce-rich pyrochlore from a rare earth element (REE) ore deposit of Inner Mongolia, Northern China. The partially metamict material is Ba-free and dominated by Ce3+. However, the metamict material is Ba-bearing and dominated by Ce3+,. The Ce4+-rich pyrochlore may result from radiation damage by alpha decay that also causes oxidation of Fe 2+ in titanite, and the interaction with a Ba-bearing oxidizing fluid. The oxidation of Ce3+ in the primary pyrochlore is accompanied by in the loss of REE, Ca, and Pb, a daughter product of U via alpha decay, during the alteration. However, most REE were incorporated in the alteration product, the Ce4+-rich pyrochlore. Based on EDS and EELS analyses, the chemical formulae of the partially metamict Ce3+-rich pyrochlore and metamict Ce4+-rich pyroeblore can be written as: (Ca, Ce3+, U, Pb) 2(Ti, Nb)2O7−x(OH)x, and (Ba, Ca, Ce4+, U)2 (Ti, Nb)2O7−y(OH)y, respectively. Ce is the most abundant element among all REE. It is proposed that the alteration takes place in solid-state with oxidizing fluid as a catalyst. The alteration kinetics is controlled by diffusion processes of aqueous species in metamict pyrochlore.

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