Designing Symmetric Gradient Honeycomb Structures with Carbon‑Coated Iron‑Based Composites for High‑Efficiency Microwave Absorption

The impedance matching of absorbers is a vital factor affecting their microwave absorption(MA)properties.In this work,we controllably synthesized Material of Institute Lavoisier 88C(MIL-88C)with varying aspect ratios(AR)as a precursor by regulating oil bath conditions,followed by one-step thermal decomposition to obtain carbon-coated iron-based composites.Modifying the precursor MIL-88C(Fe)preparation conditions,such as the molar ratio between metal ions and organic ligands(M/O),oil bath temperature,and oil bath time,influenced the phases,graphitization degree,and AR of the derivatives,enabling low filler loading,achieving well-matched impedance,and ensuring outstanding MA properties.The MOF-derivatives 2(MD_(2))/polyvinylidene Difluoride(PVDF),MD_(3)/PVDF,and MD4/PVDF absorbers all exhibited excellent MA properties with optimal filler loadings below 20 wt%and as low as 5 wt%.The MD_(2)/PVDF(5 wt%)achieved a maximum effective absorption bandwidth(EAB)of 5.52 GHz(1.90 mm).The MD_(3)/PVDF(10 wt%)possessed a minimum reflection loss(RL_(min))value of−67.4 at 12.56 GHz(2.13 mm).A symmetric gradient honeycomb structure(SGHS)was constructed utilizing the high-frequency structure simulator(HFSS)to further extend the EAB,achieving an EAB of 14.6 GHz and a RL_(min) of−59.0 dB.This research offers a viable inspiration to creating structures or materials with high-efficiency MA properties.

去上皮快速角膜胶原交联术治疗进展期圆锥角膜

目的:研究去上皮快速角膜胶原交联术(CXL)治疗进展期圆锥角膜的疗效。方法:回顾性研究。收集2020-04/2021-12就诊于宁夏回族自治区人民医院宁夏眼科医院行去上皮快速CXL的进展期圆锥角膜患者32例43眼。于术前及术后1、3、6mo行裂隙灯、眼压、裸眼视力、矫正视力、角膜内皮镜、眼前节分析仪Pentacam和可视化角膜生物力学Corvis ST检查,记录手术前后角膜情况、裸眼视力(UCVA)、最佳矫正视力(BCVA)、角膜内皮数、角膜最大曲率(Kmax)、角膜厚度最薄点(TCT)、前后表面K1、K2值、矫正眼内压(bIOP)、第一次压平时间(A1T)、第一次压平长度(A1L)、第一次压平速度(A1V)、第二次压平时间(A2T)、第二次压平长度(A2L)、第二次压平速度(A2V))、最大形变幅度(HCDA)、最大形变曲率半径(HCR)、最大压陷时两峰间距(HCPD)、第1次压平时角膜硬度(SP-A1))值。结果:术前、术后6mo UCVA(LogMAR)(1.06±0.49、0.78±0.39)和BCVA(LogMAR)(0.48±0.34、0.38±0.29)比较均有差异(P<0.05),角膜内皮细胞比较无差异(2917.39±288.38 vs 2959.19±336.27cells/mm 2,P=0.477)。手术前后Kmax、TCT、前表面K1、K2值、后表面K1值比较均有差异(P<0.05),且均在术后1mo升高,术后3mo后恢复至术前水平,而后表面K2值比较无差异。手术前后A1T、HCPD、SP-A1比较差异均有统计学意义(P<0.05),A1L、A1V、A2T、A2L、A2V、HCDA、HCR、bIOP比较无差异(P>0.05)结论:去上皮快速CXL在术后6mo内能够阻止进展期圆锥角膜进展并且具有一定的安全性。

角膜生物力学分析仪评估SMILE与FS-LASIK术后角膜生物力学的变化

目的:利用角膜生物力学分析仪(Corvis ST)评估行飞秒激光小切口角膜基质透镜取出术(SMILE)和飞秒激光辅助的准分子激光原位角膜磨镶术(FS-LASIK)治疗的中度屈光不正患者术后角膜生物力学的变化特征。方法:前瞻性队列研究。选取2020-11/2021-11在宁夏眼科医院视光中心拟行角膜屈光手术的中度近视患者65例130眼,考虑双眼存在关联,双眼同时满足条件选右眼进行研究,其中SMILE组30眼,FS-LASIK组35眼。应用Corvis ST观察两组患者术前、术后1、3mo角膜生物力学参数综合半径(IR)、反向凹面半径(ICR)、形变幅度比值(DAR2)、硬度指数(SP-A1)、相关厚度-水平方向(ARTh)和最大压陷曲率半径(HC-Radius)的变化。结果:两组间患者术前,术后1、3mo生物力学参数比较均无差异(P>0.05)。各组患者术后1、3mo IR、ICR、DAR2均较术前明显增加,SP-A1、ARTh、HC-Radius均较术前明显降低(均P<0.05),术后1mo与术后3mo生物力学参数比较无差异(P>0.05)。两组患者术后3mo中央角膜厚度(CCT)与ARTh和SP-A1呈正相关(FS-LASIK组:r=0.727、0.819,SMLIE组:r=0.683、0.434,均P<0.05),与IR和ICR呈负相关(FS-LASIK组:r=-0.697、-0.622,SMLIE组:r=-0.447、-0.491,均P<0.05)。结论:对于中度近视患者,SMILE和FS-LASIK术后均可导致角膜生物力学稳定性降低,两种手术方式对生物力学的影响无明显差异,且在术后1mo时生物力学趋于稳定,术后CCT与生物力学参数ARTh、SP-A1、IR和ICR存在相关性。

中国南海永兴岛跳小蜂科名录及一新种(膜翅目:小蜂总科)

为全面调查中国海南省三沙市永兴岛的跳小蜂科物种多样性,于2017~2020年期间采集了永兴岛的跳小蜂。经鉴定,共发现跳小蜂10种,包含1新种:Ooencyrtus yongxingensis Zu&Xue sp.nov.及2中国新记录种:Adelencyrtus mangiphila(Risbec,1952),Metaphycus agarwali Hayat and Subba Rao,1981。文中还提供了永兴岛跳小蜂科名录。

An Annotated List of Lizards(Sauria: Squamata) Recorded from the People's Republic of China

From the perspectives of biodiversity conservation and management, there is an urgent need to have at hand current synopses of classification and distributions of species. In this paper, we review and summa rize the classifica tions, Chinese a nd English names, type specimens, type localities and distributions of China’s lizard fauna to promote scientific exchange and species conservation among relevant people in China and internationally. As of December 31, 2020, a total of 230species of lizard, belonging to 44 genera and 12 families,have been recorded from China, including 4 invasive species: 2 in the family Gekkonidae, 1 in Iguanidae and one in Dactyloidae. There are 115 endemic species, accounting for 50% of this group. The proportion of endemic species to China was the highest in the family Eublepharidae(84.62%), and the number of endemic species to China was the highest in the family Agamidae(42 species). The species distributions and classifica tion in the “Fa una Sinica(Reptilia 2): Squamata(Lacertilia)” were updated.Among the provincial administrative units, there is a larger number of species in the southern provinces, such as Yunnan, Guangdong, Guangxi and Taiwan. Sichuan, Yunnan, and Taiwan harbour relatively more endemic species than others. A total of 154 species of lizards were first discovered in China, and the type localities of these species are concentrated in Yunnan, Taiwan, Tibet, Xinjiang, and Sichuan.

Three New Species of Diploderma Hallowell, 1861 (Reptilia: Squamata: Agamidae) from the Shaluli Mountains in Western Sichuan, China

In recent years,taxonomic research of the genus Diploderma has made great progress,but there are still areas lacking relevant investigations.During 2020-2021,we carried out survey of reptile diversity in and around the Shaluli Mountains and collected some specimens of Diploderma.Of which,based on systematics inferred from mitochondrial ND2 gene sequence and morphological data,three new species were recognized:Diploderma daochengense sp.nov.from the Shuiluo River and Muli River valleys in southeastern Daocheng County,D.xinlongense sp.nov.from the upper-middle valleys of the Yalong River in Xinlong County,and D.kangdingense sp.nov.from the Yalong River middle valley and Liqiu River valley.Specifically,these three new species formed three monophyletic lineages with strongly supported and nested into the subclade I of the Bayesian and Maximum Likelihood trees.The uncorrected mean genetic distance between these new species and their closely related species was 4.3%(D.xinlongense sp.nov.vs.D.panchi),3.4%(D.daochengense sp.nov.vs.D.yulongense)and 5.5%(D.kangdingense sp.nov.vs.D.bowoense),higher than many pairs of species of Diploderma.With respect to the morphology,D.daochengense sp.nov.can be easily diagnosed from D.yulongense byhaving smoothupper edge of the dorsolateral stripes,cyan or dark olive green to yellow gular spots inbothsexes and light yelloworwhite ventrolateral body in males;D.xinlongense sp.nov.can be easily diagnosed from D.panchi by having cyan gular spot in both sexes;D.kangdingense sp.nov.can be easily diagnosed from D.bowoense by having more T4S 20-25(average 23),more F4S 16-20(average 17)and yellow to light yellow ventrolateral body,yellow gular spot present in males.To date,the number of species of the genus Diploderma has increased to 40,of which 37 species have been known in China.

A New Species of Hemiphyllodactylus Bleeker,1860(Reptilia:Squamata)from Hunan Province,China

A new species of gekkonid,Hemiphyllodactylus dupanglingensis sp.nov.,is described based on six specimens from Hunan Province,China.The new species is phylogenetically close to H.zugi,H.hongkongensis,H.dushanensis,and H.huishuiensis,and can be distinguished from its congeners by the following combination of cha racters:9-11 chin scales;postmental scales enlarged;9-12 infralabials,11-14 supralabials;14-16 dorsal scales and 10-11 ventral scales longitudinally arranged at the midbody contained with one eye diameter;a manual lamellar formula of 4-4-5-4 or 4-5-5-4 and a pedal lamellar formula of 4-5-5-5 or 5-6-6-4;21-25 continuous precloacal and femoral pores in males.

A new species of Geocoris Fallén(Hemiptera:Heteroptera:Geocoridae)from Hainan Province,China

Geocoris xishaensis sp.nov.from Hainan Province,China is described.It is characterized by head ochraceous;antennal segments dark;pronotum pale with a large dark spot in median area;hemelytra pale;scutellum black.

食管癌患者细菌肺部感染的相关性研究

目的分析食管癌患者术后并发细菌肺部感染的高危因素,为临床制定预防措施来降低肺部感染率提供依据。方法研究选取我院接收590例食管癌手术患者,根据术后肺部感染情况分为感染组(129例)和非感染组(461例)。利用卡方检验比较两组患者术后肺部感染与个人因素、术中因素、术后因素的关系。个人因素包括年龄、性别、长期吸烟史、术前肺功能、术前合并症(糖尿病、高血压);术中因素包括手术方式、手术时间、术中失血量;术后因素包括病理类型、胃食管反流。结果患者的性别、合并高血压、手术方式、病理类型均与术后并发肺部感染无关,P>0.05。年龄≥60岁(χ^2=8.731,P=0.003)、吸烟史≥20年(χ^2=6.040,P=0.014)、术前肺功能FEV1/FVC<70%(χ^2=6.725,P=0.010)、术前合并糖尿病(χ^2=5.893,P=0.015)、手术时间≥4小时(χ^2=9.717,P=0.002)、术中失血量≥800mL(χ^2=5.026,P=0.025)、胃食管反流(χ^2=7.667,P=0.006)的食管癌患者,术后并发肺部感染的可能性较大。结论年龄、长期吸烟史、术前肺功能、术前合并糖尿病、手术时间、术中失血量、胃食管反流这7项指标与食管癌患者术后并发肺部感染密切相关。

尿沉渣细菌定量计数对外科术后泌尿系感染诊断效果

目的探讨尿沉渣细菌定量计数在外科术后泌尿系统感染诊断方面的应用效果。方法研究选取我院收治的138例外科术后疑似泌尿系感染患者,采用随机数字表法均分为观察组及对照组,各组69例。对照组采用尿细菌培养方法检测,观察组采用尿沉渣细菌定量计数方法检测。比较这两种方法所得泌尿系感染率,并以尿细菌培养检测结果作为"金标准",分析尿沉渣细菌定量计数的阳性符合率、阴性符合率、灵敏度和特异度。结果观察组与对照组的泌尿系感染率分别为56.52%和60.87%,差异无统计学意义(χ^2=0.269, P=0.604);相对尿细菌培养,尿沉渣细菌定量计数检测的阳性符合率为94.87%,阴性符合率为83.33%,灵敏度为88.10%,特异度为92.59%。Kappa一致性检验结果为0.834,一致性最强。结论对外科术后疑似泌尿系感染患者,尿沉渣细菌定量计数能快速、可靠地得到检测结果,值得临床推广应用。

Prediction and observation of defect-induced room-temperature ferromagnetism in halide perovskites

The possibility to induce a macroscopic magnetic moment in lead halide perovskites(LHPs),combined with their excellent optoelectronic properties,is of fundamental interest and has promising spintronic applications.However,these possibilities remain an open question in both theory and experiment.Here,theoretical and experimental studies are performed to explore ferromagnetic states in LHPs originated from lattice defects.First-principle calculations reveal that shallow-level Br vacancies in defective CsPbBr3 can produce spin-splitting states and the coupling between them leads to a ferromagnetic ground state.Experimentally,ferromagnetism at 300 K is observed in room-temperature synthesized CsPbBr3 nanocrystals,but is not observed in hot-injection prepared CsPbBr3 quantum dots and in CsPbBr3 single crystals,highlighting the significance played by vacancy defects.Furthermore,the ferromagnetism in the CsPbBr3 nanocrystals can be enhanced fourfold with Ni2+ion dopants,due to enhancement of the exchange coupling between magnetic polarons.Room-temperature ferromagnetism is also observed in other LHPs,which suggests that vacancy-induced ferromagnetism may be a universal feature of solution-processed LHPs,which is useful for future spintronic devices.

Risk Factors of Anastomotic Leakage After Anterior Resection for Rectal Cancer Patients

Objective Anastomotic leakage(AL)is one of the serious complications after anterior resection for rectal cancer.Defunctioning stoma(DS)is one of the most widely used approaches to prevent it;however,the effect of DS on the occurrence of AL remains controversial.This study aimed to investigate risk factors of AL and assess the effect of DS after anterior resection for rectal cancer patients.Methods A retrospective analysis was conducted for the data of 1840 patients who underwent anterior resection for rectal cancer from January 2014 to December 2019.Results The results showed the overall AL incidence was 7.5%.Multivariate analyses revealed that males[odds ratio(OR)1.562]and T3–T4 stage(OR 1.729)were independent risk factors for all patients.After propensity score matching analysis,the AL incidence was 14.1%in the group with no DS and 6.4%in the DS group(P<0.001).The clinical AL(grade B+grade C)incidence was 12.4%in no DS group and 4.6%in the DS group(P<0.001).Conclusion The study suggested that males and T3–T4 stage were independent risk factors of AL.In addition,DS could reduce the rate of symptomatic AL.

Bidirectionally polarizing surface chemistry of heteroatom-doped carbon matrix towards fast and longevous lithium-sulfur batteries

Herein, a bidirectional polarization strategy is proposed for hosting efficient and durable lithium-sulfur battery(Li-S) electrochemistry. By co-doping electronegative N and electropositive B in graphene matrix(BNrGO), the bidirectional electron redistribution enables a higher polysulfide affinity over its monodoped counterparts, contributing to strong sulfur immobilization and fast conversion kinetics. As a result,BNrGO as the cathode host matrix realizes excellent cycling stability over 1000 cycles with a minimum capacity fading of 0.027% per cycle, and superb rate capability up to 10 C. Meanwhile, decent areal capacity(6.46 m Ah/cm^(2)) and cyclability(300 cycles) are also achievable under high sulfur loading and limited electrolyte. This work provides instructive insights into the interaction between doping engineering and sulfur electrochemistry for pursuing superior Li-S batteries.

Hierarchical porous carbon heterojunction flake arrays derived from metal organic frameworks and ionic liquid for H2O2 electrochemical detection in cancer tissue

The development of hierarchical nanostructure is demonstrated as an effective strategy to improve catalytic activity and stability of electrocatalysts.Herein,a novel leaf-like hierarchically porous heterojunction flake arrays(FAs),integrated graphitic N-doped carbon(NC)with amorphous B,N-doped carbon(BNC),has been designed and grown on flexible carbon fiber(CF)using metal-organic framework(MOF)FAs and green ionic liquids as precursors.The hierarchical heterojunction structure possesses micro-and nano-scaled pores,large surface areas,and exposed high-density catalytic active sites,which enhances electronic conductivity and offers accessible transport channels for effectively decreasing mass transport resistance.The results of discrete Fourier transform(DFT)calculations and experiments also suggest that the catalytic activity has been promoted by the heterojunction structure through narrowing the banding gap.Consequently,the resultant nanohybrid microelectrode exhibits remarkable electrochemical sensing performance towards H2O2 with a low detection limit of 50 nM,and a high sensitivity of 213μA×mM-1×cm-2,as well as good anti-interference capability.The practical application of nanohybrid fiber microelectrode has been explored by real-time monitoring H2O2 released from live colon cells and surgically-resected fresh colon cancer tissue,which can provide important information for the identification of different types of cells as well as distinguish cancer cells from normal ones.We believe this research will pave the way towards the development of advanced carbon nanomaterials for application in the fields of electrochemistry,biosensing,and cancer diagnosis.

Electrospinning fabrication and ultra-wideband electromagnetic wave absorption properties of CeO_(2)/N-doped carbon nanofibers

The impedance mismatch of carbon materials is a key factor limiting their widespread use in electromagnetic(EM)wave absorption.In this work,the novel CeO_(2)/nitrogen-doped carbon(CeO_(2)/N-C)nanofiber was prepared to solve the problem by electrospinning and sintering.X-ray diffraction(XRD),Raman,X-ray photoelectron spectroscopy(XPS),and transmission electron microscopy(TEM)analyses demonstrated CeO_(2)was successfully loaded onto the surface of partially graphitized carbon fibers.Different sintering temperatures change the graphitization degree of material,and the oxygen vacancy structure of CeO_(2)and defects from N doping optimize the impedance matching of the material.When the sintering temperature reaches 950℃,CeO_(2)/N-C fiber possesses the minimum reflection loss(RLmin)value of−42.59 dB at 2.5 mm with a filler loading of only 3 wt.%in polyvinylidene difluoride(PVDF).Meanwhile,the CeO_(2)/N-C fiber achieves a surprising wideband(8.48 GHz)at a thickness of 2.5 mm,covering the whole Ku-band as well as 63%of the X-band at the sintering temperature of 650℃.This work provides the research basis for widely commercial applications of carbon-based nanofiber absorbers.

中国脊椎动物2022年度新增物种报告

为及时掌握中国脊椎动物在2022年的新发现情况,本文汇总了87篇文献和1份中国观鸟年报上脊椎动物新物种及新记录种基本信息。结果表明,2022年中国新增脊椎动物120种,隶属于17目43科71属。新增物种包括新种98种,新记录17种,亚种级提升为种级5种;其中鱼类6目11科16属30种;两栖类2目8科25属44种(新种34种、新记录10种);爬行类2目11科17属26种(新种21种、新记录3种、亚种级提升为种级2种);鸟类3目5科5属6种(新种1种、新记录3种、亚种级提升为种级2种);哺乳类4目8科8属14种(新种12种、新记录1种、亚种级提升为种级1种)。新增物种中,冷血脊椎动物占总数的83%;鱼类新增物种集中于鲤形目、两栖类集中于无尾目、爬行类集中于有鳞目、哺乳类集中于啮齿目,分别为22种、37种、25种、11种。本次新增物种分布记录涉及26个省域,有106种仅记录于1个省域。有99种发表时应用了分子系统学研究结果;有111种为中国学者发表;105种发表于期刊,其中在中国出版的3种英文期刊发表了19个种。本文工作可为脊椎动物的分类和保护等相关工作提供基础信息。此外,本文工作也提示冷血脊椎动物可能是中国以后脊椎动物物种多样性调查研究的重点类群,整合分类方法是未来分类工作的重要支撑。

母体外周血胎儿有核红细胞及其在无创产前诊断中的应用

母体外周血中存在来源于胎儿的具有完整细胞核的红细胞,即胎儿有核红细胞(fetal nucleated red blood cells,FNRBCs).FNRBCs在整个妊娠期内持续存在于母体血液循环之中,具有全套的胎儿遗传物质、细胞器、各类生物分子以及代谢物等,包含丰富的胎儿生理信息,同时还表达多种特异性蛋白,是用于无创式产前检测/诊断的理想分析靶标.然而,孕妇外周血中存在数量巨大的红细胞(~10~9个/mL)和白细胞(~10~6个/mL),FNRBCs则十分稀少(<10^(3)个/mL).在完成母体静脉采血后,如何高效率高纯度分离富集血样中的FNRBCs、确定其胎儿源性并开展面向临床的生化分析极具挑战.本文从实施无创产前检测/诊断的重要意义出发,对母体外周血FNRBCs这一潜力巨大的无创产前检测/诊断标志物进行综述,在介绍FNRBCs来源及特征的基础上,总结FNRBCs分离富集与鉴定分析技术的发展现状,并阐述FNRBCs的临床应用、当前面临的挑战以及今后的发展方向,旨在为相关研究和临床转化提供参考.

Mismatched donor cell infusion-related syndrome following microtransplant in patients with acute myeloid leukemia

Background:Immunotherapies such as adoptive immune cell infusion and immune-modulating agents are widely used for cancer treatment,and the concomitant symptoms,including cytokine release syndrome(CRS)or immune-related adverse events(irAEs),are frequently reported.However,clinical manifestations induced by mismatched donor granulocyte colony-stimulating factor mobilized peripheral blood mononuclear cell(GPBMC)infusion in patients receiving microtransplant(MST)have not yet been well depicted.Methods:We analyzed 88 cycles of mismatched GPBMC infusion in patients with acute myeloid leukemia receiving MST and 54 cycles of chemotherapy without GPBMC infusion as a comparison.Clinical symptoms and their correlation with clinical features,laboratory findings,and clinical response were explored.Results:Fever(58.0%[51/88])and chills(43.2%[38/88])were the significant early-onset symptoms after GPBMC infusion.Patients possessing less human leukocyte antigen-matching loci with the donor or those with unrelated donors experienced more chills(3[2–5]loci vs.5[3–5]loci,P=0.043 and 66.7%[12/18]vs.37.1%[26/70],P=0.024).On the other hand,those with decreased CD4^(+)/CD8^(+)T-cell ratio developed more fever(0.8[0.7–1.2]vs.1.4[1.1–2.2],P=0.007).Multivariable analysis demonstrated that younger patients experienced more fever(odds ratio[OR]=0.963,95%confidence interval[CI]:0.932–0.995,P=0.022),while patients with younger donors experienced more chills(OR=0.915,95%CI:0.859–0.975,P=0.006).Elevated ultra-sensitive C-reactive protein levels in the absence of cytokine storm were observed following GPBMC infusion,which indicated mild and transient inflammatory response.Although no predictive value of infusion-related syndrome to leukemia burden change was found,the proportion of host pre-treatment activated T cells was positively correlated with leukemia control.Conclusions:Mismatched GPBMC infusion in MST induced unique infusion-related symptoms and laboratory changes,which were associated with donor-or recipient-derived risk factors,with less safety and tolerance concerns than reported CRS or irAEs.

A sustainable preparation strategy for the nitrogen-doped hierarchical biochar with high surface area for the enhanced removal of organic dye

Biochar is a potential porous carbon to remove the contaminants from aquatic environments.Herein,N-doped hierarchical biochar was produced by the combined approach of ammonia torrefaction pretreatment(ATP)and alkali activation.ATP could not only incorporate N element into poplar wood,but obtain the loose structure of poplar wood.The highest surface area of N-doped hierarchical biochar was 2324.61 m^(2) g^(−1) after ammonia wet torrefaction pretreatment,which was higher than that of activation carbon(1401.82 m^(2) g^(−1))without torrefaction pretreatment,the hierarchical biochar(2111.03 m^(2) g^(−1))without ammonia atmosphere.The N-doped hierarchical biochar presented the highest adsorption capacity(564.7 mg g^(−1))of methyl orange(MO),which was 14.64-fold of that on biochar without N doping.In addition,the pseudo-second-order and Langmuir model fitted well with the adsorption kinetics and isotherms of the N-doped hierarchical biochar.The incorporation of nitrogen element could not only tune the distribution of surface electrons on biochar,but optimize the ambient condition of adsorption active sites as well.The adsorption of MO might occur on the N-/O-containing functional groups through the electrostatic interaction,theπ-πdispersion interaction,and the hydrogen bonding.The density functional theory showed that the graphitic-N and pyridinic-N were the dominant adsorption active sites.

中国为什么可以实现陆相“页岩油革命”?

陆相页岩油是保障国家石油供应安全和提升工业创新水平的战略接替资源.中国是陆相石油资源大国,占陆上石油资源总量的90%;也是陆相石油生产大国,陆相石油产量约占石油总产量的93%(贾承造等,2018;杨智和邹才能,2019).中国源岩层系发育多种类型非常规油气资源(图1),其中陆相页岩油是中国陆上未来剩余石油资源的主要接替领域.确立中国特色陆相页岩油理论技术攻关的科学问题,有利于推动实现中国陆相页岩油革命和石油工业持续发展.目前,中高成熟度页岩油在松辽、鄂尔多斯、渤海湾、准噶尔、四川等盆地已实现工业性突破与发展,中低成熟度页岩油已经开展大量前期基础理论与技术储备攻关,即将在鄂尔多斯、松辽等盆地进行工业性试验。