针对南苏丹Melut盆地Ruman凹陷稠油油藏成藏机理及勘探潜力认识不清的问题,运用烃源岩盆地模拟、油藏分析等研究方法,对Ruman凹陷东斜坡稠油油藏成藏机理进行研究,并对该区稠油的勘探潜力进行分析。研究结果表明:Ruman凹陷东斜坡Yabus组...针对南苏丹Melut盆地Ruman凹陷稠油油藏成藏机理及勘探潜力认识不清的问题,运用烃源岩盆地模拟、油藏分析等研究方法,对Ruman凹陷东斜坡稠油油藏成藏机理进行研究,并对该区稠油的勘探潜力进行分析。研究结果表明:Ruman凹陷东斜坡Yabus组、Gayger组与基岩油藏受Lau组沉积时期构造运动影响,原生油藏发生破坏,现今为次生型残留稠油油藏,勘探潜力十分有限;Jimidi组油藏为晚期成藏次生型稠油油藏,有利勘探面积约为21 km 2,Galhak组油藏属于晚期成藏原生型稠油油藏,有利勘探面积约为105 km 2,均具有较大勘探潜力。该研究可为研究区下步油气勘探提供一定的借鉴和指导。展开更多
Titanium dioxide(TiO_(2))was recently employed to apply onto road surfaces to degrade the harmful compounds from vehicle emissions.However,it remains a challenging task to find a highly compatible pavement type for Ti...Titanium dioxide(TiO_(2))was recently employed to apply onto road surfaces to degrade the harmful compounds from vehicle emissions.However,it remains a challenging task to find a highly compatible pavement type for TiO_(2)application to achieve durable and efficient air-purifying performance.This study proposed to coat TiO_(2)particles onto semi-flexible pavement surface and tried to investigate an optimum coating method.Three coating methods,including direct mixing TiO_(2)(MT)with asphalt mixture,spraying dry TiO_(2)(ST)coating and watersolution-based TiO_(2)(WT)coating on semi-flexible pavement surface.To achieve this objective,semi-flexible samples were prepared to evaluate and compare the performances of three coating methods by employing resistance to wearing,NO removal efficiency tests and residual texture depth tests.It was found that the ST method not only provided better NO degrading efficiency but also improved the resistance to wearing than the other two methods.展开更多
Spine surgery is typically having a relationship to high degrees of pain and immobility.It is a known fact that the implementation of an enhanced recovery after surgery(ERAS)approach has led to a paradigm shift in var...Spine surgery is typically having a relationship to high degrees of pain and immobility.It is a known fact that the implementation of an enhanced recovery after surgery(ERAS)approach has led to a paradigm shift in various surgical specialties.These protocols require doctors,nurses,anesthesiologists,patients,and their families to agree to strengthen communication with each other,and involve a long timeline and teamwork from start to finish.To our knowledge,the role of nursing in the ERAS of spine surgery has not been reported before.The purpose of this study is to summarize the role of nursing in ERAS programs in accordance with surgical periods.The methods applied for this review include literature review of the world’s acknowledged databases such as Springer Link,PubMed,Embase,and Wanfang,especially in the period of 2000-2015.A total of 9 studies fulfilled the eligibility criteria and were included in the review.The findings confirm that the nursing work continued throughout the perioperative procedure,which plays a key role in the successful ERAS pathway.According to different nursing measures,ERAS nursing can effectively promote the postoperative recovery of spine surgical patients,with fewer postoperative complications and increased patient satisfaction.展开更多
BACKGROUND： Studies have demonstrated that NG2-positive glial cells in the adult rats are predominantly located in the gray and white matter of the cerebral cortex and hippocampus. Platelet-derived growth factor-a re...BACKGROUND： Studies have demonstrated that NG2-positive glial cells in the adult rats are predominantly located in the gray and white matter of the cerebral cortex and hippocampus. Platelet-derived growth factor-a receptor （PDGF-αR） cells are a subset of oligodendrocytes, which are not as mature as NG2-positive cells. Distribution and migration of PDGF-αR-positive cells in the rat brain remain poorly understood. OBJECTIVE： Using immunohistochemical methods, the distribution of oligodendrocyte precursor cells （PDGF-αR-positive） was analyzed in the adult rat brain. DESIGN, TIME AND SETTING： Immunohistochemical study was performed at the Department of Histology and Embryology of the Third Military Medical University from September 2007 to September 2008. MATERIALS： Rabbit anti-PDGF-αR polyclonal antibody was purchased from Santa Cruz Biotechnology, USA. Streptomycin-avidin-biotin complex immunohistochemistry kit was purchased from Zhongshan Goldenbridge Biotechnology, China. METHODS： Whole brains from 5 healthy, adult, Wistar rats were collected for immunohistochemistry, and the mean value of PDGF-αR-expressing cells was quantified. The absolute values were translated to ranked data of high, moderate, and low grades （high grade： 10 positive cells; moderate grade： 5-9 cells; low grade： 〈 5 cells in a 400 × visual field）. Based on the number of cell processes and branches, as well as the number of PDGF-αR-positive cells, in different regions, the cells were classified into three categories, i.e., type Ⅰ-Ⅲ. From type I to type Ill, the number of processes gradually increased. MAIN OUTCOME MEARSURES： The number and distribution of PDGF-αR-positive cells in different brain regions of adult rats. RESULTS： PDGF-αR-positive cells were located in the forebrain and midbrain, but not in the cerebellum or brainstem. In the olfactory bulb and hippocampus, a total of 60% PDGF-αR-positive cells were type Ⅰ and these cells were not mature as others. In the cerebral cortex, olfactory system, hippocampus, and optic chiasma, where neuronal bodies aggregated, approximately 40% of the PDGF-αR-positive cells were type Ⅱ, with few type Ⅲ cells. In the white matter, corpus callosum, basal nucleus, and thalamus, PDGF-αR-positive cell density was moderate. In the olfactory bulb and hippocampus, PDGF-αR-positive cell density was high. PDGF-αR-positive cells were not observed in the cerebellum or brainstem CONCLUSION： PDGF-αR-positive cells were aggregated in the olfactory bulb and hippocampus in the adult, rat brain, but few cells were detected in the cerebellum and brainstem.展开更多
基金sponsored by the Subordinate subject of the National Major Science and Technology Project“Development of Large Oil and Gas Fields and coalbed methane”(2017ZX05001-003)supported by the National Natural Science Foundation of China”Simulation of Dynamic Process for Shale Oil Sweet Deposition in Lucaogou Formation,Jimusar Sag”(42072119).
文摘针对南苏丹Melut盆地Ruman凹陷稠油油藏成藏机理及勘探潜力认识不清的问题,运用烃源岩盆地模拟、油藏分析等研究方法,对Ruman凹陷东斜坡稠油油藏成藏机理进行研究,并对该区稠油的勘探潜力进行分析。研究结果表明:Ruman凹陷东斜坡Yabus组、Gayger组与基岩油藏受Lau组沉积时期构造运动影响,原生油藏发生破坏,现今为次生型残留稠油油藏,勘探潜力十分有限;Jimidi组油藏为晚期成藏次生型稠油油藏,有利勘探面积约为21 km 2,Galhak组油藏属于晚期成藏原生型稠油油藏,有利勘探面积约为105 km 2,均具有较大勘探潜力。该研究可为研究区下步油气勘探提供一定的借鉴和指导。
基金The authors would like to acknowledge the Science Technology Department of Zhejiang Province(Grant Nos.2018F10045 and 2021C01106)for the funding support and the technical guidance in 3D laser scanning by Dr.Fengxia Chi from the Institute of Road Engineering of Zhejiang Scientific Research Institute of TransportThe constant of this paper reflects the views of authors,who are responsible for the facts and the accuracy of the data shown herein.The authors gratefully acknowledge their financial and technical supporting.
文摘Titanium dioxide(TiO_(2))was recently employed to apply onto road surfaces to degrade the harmful compounds from vehicle emissions.However,it remains a challenging task to find a highly compatible pavement type for TiO_(2)application to achieve durable and efficient air-purifying performance.This study proposed to coat TiO_(2)particles onto semi-flexible pavement surface and tried to investigate an optimum coating method.Three coating methods,including direct mixing TiO_(2)(MT)with asphalt mixture,spraying dry TiO_(2)(ST)coating and watersolution-based TiO_(2)(WT)coating on semi-flexible pavement surface.To achieve this objective,semi-flexible samples were prepared to evaluate and compare the performances of three coating methods by employing resistance to wearing,NO removal efficiency tests and residual texture depth tests.It was found that the ST method not only provided better NO degrading efficiency but also improved the resistance to wearing than the other two methods.
基金sponsored by the scientific research and technology development plan of Nanning(20193100,Z20191065,Z20190446)Nanning Excellent Young Scientist Program RC20200102.
文摘Spine surgery is typically having a relationship to high degrees of pain and immobility.It is a known fact that the implementation of an enhanced recovery after surgery(ERAS)approach has led to a paradigm shift in various surgical specialties.These protocols require doctors,nurses,anesthesiologists,patients,and their families to agree to strengthen communication with each other,and involve a long timeline and teamwork from start to finish.To our knowledge,the role of nursing in the ERAS of spine surgery has not been reported before.The purpose of this study is to summarize the role of nursing in ERAS programs in accordance with surgical periods.The methods applied for this review include literature review of the world’s acknowledged databases such as Springer Link,PubMed,Embase,and Wanfang,especially in the period of 2000-2015.A total of 9 studies fulfilled the eligibility criteria and were included in the review.The findings confirm that the nursing work continued throughout the perioperative procedure,which plays a key role in the successful ERAS pathway.According to different nursing measures,ERAS nursing can effectively promote the postoperative recovery of spine surgical patients,with fewer postoperative complications and increased patient satisfaction.
基金Supported by: the National Natural Science Foundation of China, No. 30572364the Natural Science Foundation of Chongqing, No. 2007BB5008
文摘BACKGROUND： Studies have demonstrated that NG2-positive glial cells in the adult rats are predominantly located in the gray and white matter of the cerebral cortex and hippocampus. Platelet-derived growth factor-a receptor （PDGF-αR） cells are a subset of oligodendrocytes, which are not as mature as NG2-positive cells. Distribution and migration of PDGF-αR-positive cells in the rat brain remain poorly understood. OBJECTIVE： Using immunohistochemical methods, the distribution of oligodendrocyte precursor cells （PDGF-αR-positive） was analyzed in the adult rat brain. DESIGN, TIME AND SETTING： Immunohistochemical study was performed at the Department of Histology and Embryology of the Third Military Medical University from September 2007 to September 2008. MATERIALS： Rabbit anti-PDGF-αR polyclonal antibody was purchased from Santa Cruz Biotechnology, USA. Streptomycin-avidin-biotin complex immunohistochemistry kit was purchased from Zhongshan Goldenbridge Biotechnology, China. METHODS： Whole brains from 5 healthy, adult, Wistar rats were collected for immunohistochemistry, and the mean value of PDGF-αR-expressing cells was quantified. The absolute values were translated to ranked data of high, moderate, and low grades （high grade： 10 positive cells; moderate grade： 5-9 cells; low grade： 〈 5 cells in a 400 × visual field）. Based on the number of cell processes and branches, as well as the number of PDGF-αR-positive cells, in different regions, the cells were classified into three categories, i.e., type Ⅰ-Ⅲ. From type I to type Ill, the number of processes gradually increased. MAIN OUTCOME MEARSURES： The number and distribution of PDGF-αR-positive cells in different brain regions of adult rats. RESULTS： PDGF-αR-positive cells were located in the forebrain and midbrain, but not in the cerebellum or brainstem. In the olfactory bulb and hippocampus, a total of 60% PDGF-αR-positive cells were type Ⅰ and these cells were not mature as others. In the cerebral cortex, olfactory system, hippocampus, and optic chiasma, where neuronal bodies aggregated, approximately 40% of the PDGF-αR-positive cells were type Ⅱ, with few type Ⅲ cells. In the white matter, corpus callosum, basal nucleus, and thalamus, PDGF-αR-positive cell density was moderate. In the olfactory bulb and hippocampus, PDGF-αR-positive cell density was high. PDGF-αR-positive cells were not observed in the cerebellum or brainstem CONCLUSION： PDGF-αR-positive cells were aggregated in the olfactory bulb and hippocampus in the adult, rat brain, but few cells were detected in the cerebellum and brainstem.
