Based on the geological and geochemical analysis of potential source rocks in different formations and the classification of crude oil types,combined with the hydrocarbon generation thermal simulation experiments,the ...Based on the geological and geochemical analysis of potential source rocks in different formations and the classification of crude oil types,combined with the hydrocarbon generation thermal simulation experiments,the source,genesis,and distribution of different types of oils in the Mahu large oil province of the Junggar Basin are investigated.Four sets of potential source rocks are developed in the Mahu Sag.Specifically,the source rocks of the Permian Fengcheng Formation have the highest hydrocarbon generation potential and contain mainly TypesⅡandⅠorganic matters,with a high oil generation capacity.In contrast,the source rocks in other formations exhibit lower hydrocarbon generation potential and contain mainly TypeⅢorganic matter,with dominant gas generation.Oils in the Mahu Sag can be classified as three types:A,B and C,which display ascending,mountainous and descending C_(20)-C_(21)-C_(23)tricyclic terpenes abundance patterns in sequence,and gradually increasing relative content of tricyclic terpenes and sterane isomerization parameters,indicating an increasing oil maturity.Different types of oils are distributed spatially in an obviously orderly manner:Type A oil is close to the edge of the sag,Type C oil is concentrated in the center of the sag,and Type B oil lies in the slope area between Type A and Type C.The results of oil-source correlation and thermal simulation experiments show that the three types of oils come from the source rocks of the Fengcheng Formation at different thermal evolution stages.This new understanding of the differential genesis of oils in the Mahu Sag reasonably explains the source,distribution,and genetic mechanism of the three types of oils.The study results are of important guidance for the comprehensive and three-dimensional oil exploration,the identification of oil distribution in the total petroleum system,and the prediction of favorable exploration areas in the Mahu Sag.展开更多
目的介绍1例维得利珠单抗(VDZ)致间质性肺炎的病例,汇总分析该药相关肺毒性的发生特点,为临床安全用药提供参考。方法从临床药师角度出发,回顾性分析1例VDZ致间质性肺炎患者的诊治过程,并进行不良反应相关性分析;检索中国知网、维普网、...目的介绍1例维得利珠单抗(VDZ)致间质性肺炎的病例,汇总分析该药相关肺毒性的发生特点,为临床安全用药提供参考。方法从临床药师角度出发,回顾性分析1例VDZ致间质性肺炎患者的诊治过程,并进行不良反应相关性分析;检索中国知网、维普网、PubMed、Web of Science等中英文数据库,对VDZ相关肺毒性的病例报道进行汇总分析。结果该患者在使用VDZ期间发生间质性肺炎,予抗菌药物经验性抗感染治疗无改善;停用VDZ并予甲泼尼龙治疗后,患者的症状及影像学检查均有改善但仍提示间质性肺炎。经Naranjo's不良反应评估量表评估并根据我国《药品不良反应报告和监测工作手册》判断,VDZ与间质性肺炎的关联性均为“很可能”。文献分析结果显示,纳入的29例患者(含本文报道的患者)中,男性19例、女性10例,平均年龄(49.24±17.06)岁;肺毒性主要包括VDZ相关性肺炎、嗜酸性粒细胞肺炎、肺肉芽肿或坏死性结节、间质性肺损伤等,多发生在用药后24周以内(58.62%),主要临床表现为咳嗽、呼吸困难、发热等;绝大多数患者经停药和/或给予糖皮质激素等治疗后好转或康复,1例患者因呼吸衰竭死亡。结论肺毒性为VDZ较罕见的不良反应,起病隐匿且症状无特异性。一旦患者出现咳嗽、呼吸困难等症状,临床应早期判断、及时停药,并给予糖皮质激素等对症治疗,以保障患者用药安全。展开更多
为提高蒙皮损伤检测的自动化程度,提出一种基于改进YOLOv7通道冗余的机器视觉检测方法。首先针对飞机蒙皮损伤数据集背景单一的特点,提出增强型颈部特征融合改进算法,提高了飞机蒙皮损伤的识别精度和检测速度;其次针对主干特征提取网络...为提高蒙皮损伤检测的自动化程度,提出一种基于改进YOLOv7通道冗余的机器视觉检测方法。首先针对飞机蒙皮损伤数据集背景单一的特点,提出增强型颈部特征融合改进算法,提高了飞机蒙皮损伤的识别精度和检测速度;其次针对主干特征提取网络的卷积通道冗余的问题,引入部分卷积PConv(Partial convolution),提出主干特征提取网络轻量化,减少模型的参数量,同时提高损伤的识别效率。试验部分首先在飞机蒙皮损伤数据集上探索了不同增强型颈部特征融合改进算法,确定了最优的改进方案;接着在飞机蒙皮损伤数据集上做消融和对比试验,改进算法与原YOLOv7算法比较,mAP(Mean average precision)提升了2.3%,FPS(Frames per second)提升了22.1 f/s,模型参数量降低了34.13%;最后将改进的YOLOv7模型与主流目标检测模型对比,证明了改进算法的先进性。展开更多
文摘Based on the geological and geochemical analysis of potential source rocks in different formations and the classification of crude oil types,combined with the hydrocarbon generation thermal simulation experiments,the source,genesis,and distribution of different types of oils in the Mahu large oil province of the Junggar Basin are investigated.Four sets of potential source rocks are developed in the Mahu Sag.Specifically,the source rocks of the Permian Fengcheng Formation have the highest hydrocarbon generation potential and contain mainly TypesⅡandⅠorganic matters,with a high oil generation capacity.In contrast,the source rocks in other formations exhibit lower hydrocarbon generation potential and contain mainly TypeⅢorganic matter,with dominant gas generation.Oils in the Mahu Sag can be classified as three types:A,B and C,which display ascending,mountainous and descending C_(20)-C_(21)-C_(23)tricyclic terpenes abundance patterns in sequence,and gradually increasing relative content of tricyclic terpenes and sterane isomerization parameters,indicating an increasing oil maturity.Different types of oils are distributed spatially in an obviously orderly manner:Type A oil is close to the edge of the sag,Type C oil is concentrated in the center of the sag,and Type B oil lies in the slope area between Type A and Type C.The results of oil-source correlation and thermal simulation experiments show that the three types of oils come from the source rocks of the Fengcheng Formation at different thermal evolution stages.This new understanding of the differential genesis of oils in the Mahu Sag reasonably explains the source,distribution,and genetic mechanism of the three types of oils.The study results are of important guidance for the comprehensive and three-dimensional oil exploration,the identification of oil distribution in the total petroleum system,and the prediction of favorable exploration areas in the Mahu Sag.
文摘目的介绍1例维得利珠单抗(VDZ)致间质性肺炎的病例,汇总分析该药相关肺毒性的发生特点,为临床安全用药提供参考。方法从临床药师角度出发,回顾性分析1例VDZ致间质性肺炎患者的诊治过程,并进行不良反应相关性分析;检索中国知网、维普网、PubMed、Web of Science等中英文数据库,对VDZ相关肺毒性的病例报道进行汇总分析。结果该患者在使用VDZ期间发生间质性肺炎,予抗菌药物经验性抗感染治疗无改善;停用VDZ并予甲泼尼龙治疗后,患者的症状及影像学检查均有改善但仍提示间质性肺炎。经Naranjo's不良反应评估量表评估并根据我国《药品不良反应报告和监测工作手册》判断,VDZ与间质性肺炎的关联性均为“很可能”。文献分析结果显示,纳入的29例患者(含本文报道的患者)中,男性19例、女性10例,平均年龄(49.24±17.06)岁;肺毒性主要包括VDZ相关性肺炎、嗜酸性粒细胞肺炎、肺肉芽肿或坏死性结节、间质性肺损伤等,多发生在用药后24周以内(58.62%),主要临床表现为咳嗽、呼吸困难、发热等;绝大多数患者经停药和/或给予糖皮质激素等治疗后好转或康复,1例患者因呼吸衰竭死亡。结论肺毒性为VDZ较罕见的不良反应,起病隐匿且症状无特异性。一旦患者出现咳嗽、呼吸困难等症状,临床应早期判断、及时停药,并给予糖皮质激素等对症治疗,以保障患者用药安全。
文摘为提高蒙皮损伤检测的自动化程度,提出一种基于改进YOLOv7通道冗余的机器视觉检测方法。首先针对飞机蒙皮损伤数据集背景单一的特点,提出增强型颈部特征融合改进算法,提高了飞机蒙皮损伤的识别精度和检测速度;其次针对主干特征提取网络的卷积通道冗余的问题,引入部分卷积PConv(Partial convolution),提出主干特征提取网络轻量化,减少模型的参数量,同时提高损伤的识别效率。试验部分首先在飞机蒙皮损伤数据集上探索了不同增强型颈部特征融合改进算法,确定了最优的改进方案;接着在飞机蒙皮损伤数据集上做消融和对比试验,改进算法与原YOLOv7算法比较,mAP(Mean average precision)提升了2.3%,FPS(Frames per second)提升了22.1 f/s,模型参数量降低了34.13%;最后将改进的YOLOv7模型与主流目标检测模型对比,证明了改进算法的先进性。