Inertinite-rich coal is widely distributed in the Ordos Basin,represented by the No.2 coal seam of the Middle Jurassic Yan'an Formation.This paper combined coal petrology and geochemistry to analyze the origin of ...Inertinite-rich coal is widely distributed in the Ordos Basin,represented by the No.2 coal seam of the Middle Jurassic Yan'an Formation.This paper combined coal petrology and geochemistry to analyze the origin of inertinite,changes in the coal-forming environment and control characteristics of wildfire.Research has shown that there are two forms of inertinite sources in the study area.Alongside typical fusinization,wildfire events also play a substantial role in inertinite formation.There are significant fluctuations in the coal-forming environment of samples at different depths.Coal samples were formed in dry forest swamp with low water levels and strong oxidation,which have a high inertinite content,and the samples formed in wet forest swamp and limnic showed low inertinite content.Conversely,the inertinite content of different origins does not fully correspond to the depositional environment characterized by dryness and oxidation.Nonpyrogenic inertinites were significantly influenced by climatic conditions,while pyrofusinite was not entirely controlled by climatic conditions but rather directly impacted by wildfire events.The high oxygen level was the main factor causing widespread wildfire events.Overall,the combination of wildfire activity and oxidation generates a high content of inertinite in the Middle Jurassic coal of the Ordos Basin.展开更多
目的探讨急性脑梗死(ACI)患者出院结局的相关因素及白细胞计数(WBC)对不良出院结局的影响。方法选择2014年1月~2018年11月任丘康济新图医院神经内科住院的ACI患者4048例,按照患者出院时改良的Rankin量表(mRS)评分分为良好组(mRS 0~2分)3...目的探讨急性脑梗死(ACI)患者出院结局的相关因素及白细胞计数(WBC)对不良出院结局的影响。方法选择2014年1月~2018年11月任丘康济新图医院神经内科住院的ACI患者4048例,按照患者出院时改良的Rankin量表(mRS)评分分为良好组(mRS 0~2分)3213例和不良组(mRS评分≥3分)835例,采用logistic回归分析出院结局的相关因素,分析入院时不同WBC水平[<4.0×10^(9)/L、(4.0~10.0)×10^(9)/L、(10.1~12.0)×10^(9)/L和>12.0×10^(9)/L]与出院结局不良的关系。结果2组男性、年龄、糖尿病、高脂血症、脑卒中史、心房颤动、冠心病、吸烟、过量饮酒、使用抗血小板药物比例、收缩压、舒张压、美国国立卫生研究院卒中量表(NIHSS)评分、纤维蛋白原、FPG、TG、LDL-C、脂蛋白a、同型半胱氨酸、尿酸和胱抑素C水平比较,差异有统计学意义(P<0.05,P<0.01)。良好组较不良组WBC水平明显降低,差异有统计学意义[6.59(5.47,8.00)×10^(9)/L vs 6.96(5.73,8.44)×10^(9),P=0.000];多因素logistic回归分析显示,年龄(OR=1.031,95%CI:1.017~1.045,P<0.01)、吸烟(OR=1.398,95%CI:1.062~1.841,P<0.05)和NIHSS评分(OR=2.422,95%CI:2.263~2.592,P<0.01)是ACI患者出院结局不良的独立危险因素;以WBC(4.0~10.0)×10^(9)/L为参照,WBC(10.1~12.0)×10^(9)/L(OR=1.660,95%CI:1.020~2.701,P<0.05),WBC>12.0×10^(9)/L(OR=2.545,95%CI:1.395~4.642,P<0.01)有增加患者出院结局不良的风险。结论ACI患者出院结局不良与年龄、吸烟、NIHSS评分和WBC密切相关,WBC水平越高,患者出现出院结局不良的风险越高。展开更多
基金financially supported by the National Natural Science Foundation of China(Grant No.42272209)the Natural Science Basic Research Program of Shaanxi(Grant No.2021JLM-12)the CNPC Major Science and Technology Project(Grant No.2021DJ3805)。
文摘Inertinite-rich coal is widely distributed in the Ordos Basin,represented by the No.2 coal seam of the Middle Jurassic Yan'an Formation.This paper combined coal petrology and geochemistry to analyze the origin of inertinite,changes in the coal-forming environment and control characteristics of wildfire.Research has shown that there are two forms of inertinite sources in the study area.Alongside typical fusinization,wildfire events also play a substantial role in inertinite formation.There are significant fluctuations in the coal-forming environment of samples at different depths.Coal samples were formed in dry forest swamp with low water levels and strong oxidation,which have a high inertinite content,and the samples formed in wet forest swamp and limnic showed low inertinite content.Conversely,the inertinite content of different origins does not fully correspond to the depositional environment characterized by dryness and oxidation.Nonpyrogenic inertinites were significantly influenced by climatic conditions,while pyrofusinite was not entirely controlled by climatic conditions but rather directly impacted by wildfire events.The high oxygen level was the main factor causing widespread wildfire events.Overall,the combination of wildfire activity and oxidation generates a high content of inertinite in the Middle Jurassic coal of the Ordos Basin.
文摘目的探讨急性脑梗死(acute cerebral infarction,ACI)患者神经功能缺损程度与压疮评分和跌倒评分的相关性。方法选择2014年1月至2018年11月河北省任丘康济新图医院收治的ACI患者3996例,采用美国国立卫生研究院卒中量表(National Institutes of Health Stroke Scale,NIHSS)评估患者神经功能缺损程度,以入院24 h内的神经功能缺损程度评分分为轻型组(NIHSS评分≤4分)、中型组(5分≤NIHSS评分≤15分)和重型组(NIHSS评分>15分);比较各组压疮评分、跌倒评分及NIHSS评分与压疮评分和跌倒评分的关系。结果随着神经功能缺损程度的增加,压疮评分水平逐渐降低,跌倒评分水平呈逐渐增高,且患者住院期间合并消化道出血及质子泵抑制剂治疗比例也逐渐增高,差异均有统计学意义(P<0.05)。多因素logistic回归分析显示,压疮评分(OR=1.745,95%CI:1.524~1.999,P<0.001)、跌倒评分(OR=1.316,95%CI:1.214~1.628,P=0.026)、住院期间合并消化道出血(OR=2.590,95%CI:1.148~5.839,P=0.022)及住院期间质子泵抑制剂治疗(OR=2.869,95%CI:1.594~5.164,P<0.001)是ACI患者神经功能缺损的独立危险因素。Pearson相关性分析显示,患者神经功能缺损程度与压疮评分呈负相关(r=-0.651,P<0.01),与跌倒评分水平呈正相关(r=0.353,P<0.01)。结论压疮评分、跌倒评分、住院期间合并消化道出血及住院期间质子泵抑制剂治疗与ACI患者神经功能缺损程度密切相关。
文摘目的探讨急性脑梗死(ACI)患者出院结局的相关因素及白细胞计数(WBC)对不良出院结局的影响。方法选择2014年1月~2018年11月任丘康济新图医院神经内科住院的ACI患者4048例,按照患者出院时改良的Rankin量表(mRS)评分分为良好组(mRS 0~2分)3213例和不良组(mRS评分≥3分)835例,采用logistic回归分析出院结局的相关因素,分析入院时不同WBC水平[<4.0×10^(9)/L、(4.0~10.0)×10^(9)/L、(10.1~12.0)×10^(9)/L和>12.0×10^(9)/L]与出院结局不良的关系。结果2组男性、年龄、糖尿病、高脂血症、脑卒中史、心房颤动、冠心病、吸烟、过量饮酒、使用抗血小板药物比例、收缩压、舒张压、美国国立卫生研究院卒中量表(NIHSS)评分、纤维蛋白原、FPG、TG、LDL-C、脂蛋白a、同型半胱氨酸、尿酸和胱抑素C水平比较,差异有统计学意义(P<0.05,P<0.01)。良好组较不良组WBC水平明显降低,差异有统计学意义[6.59(5.47,8.00)×10^(9)/L vs 6.96(5.73,8.44)×10^(9),P=0.000];多因素logistic回归分析显示,年龄(OR=1.031,95%CI:1.017~1.045,P<0.01)、吸烟(OR=1.398,95%CI:1.062~1.841,P<0.05)和NIHSS评分(OR=2.422,95%CI:2.263~2.592,P<0.01)是ACI患者出院结局不良的独立危险因素;以WBC(4.0~10.0)×10^(9)/L为参照,WBC(10.1~12.0)×10^(9)/L(OR=1.660,95%CI:1.020~2.701,P<0.05),WBC>12.0×10^(9)/L(OR=2.545,95%CI:1.395~4.642,P<0.01)有增加患者出院结局不良的风险。结论ACI患者出院结局不良与年龄、吸烟、NIHSS评分和WBC密切相关,WBC水平越高,患者出现出院结局不良的风险越高。
