mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Late Cretaceous non-avian dinosaurs from the James Ross Basin, Antarctica: description of new material, updated synthesis, biostratigraphy, and paleobiogeography

Although the fossil record of non-avian dinosaurs from the Cretaceous of Antarctica is the poorest of any continent, fossils representing at least five major taxonomic groups (Ankylosauria, early-diverging Ornithopoda, Hadrosauridae, Titanosauria, and Theropoda) have been recovered. All come from Upper Cretaceous (Coniacian-Maastrichtian) marine and nearshore deposits belonging to the Gustav and Marambio groups of the James Ross Basin at the northern tip of the Antarctic Peninsula. The majority of these finds have come from the Campanian-Maastrichtian Snow Hill Island and Lopez de Bertodano formations of James Ross and Vega islands. Given the rarity of Antarctic Cretaceous non-avian dinosaurs, discoveries of any fossils of these archosaurs, no matter how meager, are of significance. Here we describe fragmentary new ornithischian (ankylosaur and ornithopod) material from the upper Campanian-lower Maastrichtian Cape Lamb Member of the Snow Hill Island Formation and the Maastrichtian Sandwich Bluff Member of the Lopez de Bertodano Formation. One of these specimens is considered to probably pertain to the holotypic individual of the early-diverging ornithopod Morrosaurus antarcticus. We also provide an up-to-date synthesis of the Late Cretaceous non-avian dinosaur record of the James Ross Basin and analyze the biostratigraphic occurrences of the various finds, demonstrating that most (including all named taxa and all reasonably complete skeletons discovered to date) occur within a relatively condensed temporal interval of the late Campanian to early Maastrichtian. Most or all James Ross Basin dinosaurs share close affinities with penecontemporaneous taxa from Patagonia, indicating that at least some continental vertebrates could disperse between southern South America and Antarctica during the final stages of the Mesozoic.
Determining the spatial distribution of soil properties using the environmental covariates and multivariate statistical analysis: a case study in semi-arid regions of Iran

Natural soil-forming factors such as landforms, parent materials or biota lead to high variability in soil properties. However, there is not enough research quantifying which environmental factor(s) can be the most relevant to predicting soil properties at the catchment scale in semi-arid areas. Thus, this research aims to investigate the ability of multivariate statistical analyses to distinguish which soil properties follow a clear spatial pattern conditioned by specific environmental characteristics in a semi-arid region of Iran. To achieve this goal, we digitized parent materials and landforms by recent orthophotography. Also, we extracted ten topographical attributes and five remote sensing variables from a digital elevation model (DEM) and the Landsat Enhanced Thematic Mapper (ETM), respectively. These factors were contrasted for 334 soil samples (depth of 0-30 cm). Cluster analysis and soil maps reveal that Cluster 1 comprises of limestones, massive limestones and mixed deposits of conglomerates with low soil organic carbon (SOC) and clay contents, and Cluster 2 is composed of soils that originated from quaternary and early quaternary parent materials such as terraces, alluvial fans, lake deposits, and marls or conglomerates that register the highest SOC content and the lowest sand and silt contents. Further, it is confirmed that soils with the highest SOC and clay contents are located in wetlands, lagoons, alluvial fans and piedmonts, while soils with the lowest SOC and clay contents are located in dissected alluvial fans, eroded hills, rock outcrops and steep hills. The results of principal component analysis using the remote sensing data and topographical attributes identify five main components, which explain 73.3% of the total variability of soil properties. Environmental factors such as hillslope morphology and all of the remote sensing variables can largely explain SOC variability, but no significant correlation is found for soil texture and calcium carbonate equivalent contents. Therefore, we conclude that SOC can be considered as the best-predicted soil property in semi-arid regions.
连续五年健康体检后发现直肠癌一例

对1例连续5年健康体检,第5年发现直肠癌的病例进行回顾性分析。通过对比该受检者的历年体检项目和结果以及所在单位的历年体检项目,分析该受检者连续健康体检后仍发现肿瘤的原因,并针对体检现状提出相应建议和改进措施.
Changes of microRNA profile after Yimusake treatment in ED rat model

Erectile dysfunction (ED) is a multifactor disease that has profound effects on man's quality of life. The Yimusake (in tablet form) is a Chinese traditional medicine that has been clinically demonstrated to be effective in treating ED. The Yimusake (in tablet form) is composed of radices salep, musk, ambergris, stigma croci, Strychnos nux-vomica L, frankincense, penis and testis of ox, nutmeg, Syzygium aromaticum, Alpinia platychilushas, which has been demonstrated clinically efficiency and is worth promoting, but the mechanism is still unclear [1,2]. Altered expressions of microRNAs (miRNAs) have been observed in the corpus cavernosum (CC) of obese diabetes mellitus mice with ED and in vasculogenic ED [3,4]. For example, miR-1937c, miR-151-5p, miR-153, and miR-425 were validated to be involved in high fat diet-induced vasculogenic ED [4]. Higher expression levels of miR-93, miR-320, and miR-16 were detected in the serum of diabetic ED patients [5]. miR-1, miR-200a, miR-203, and miR-206 play important roles in the development of aging-related ED by regulating the endothelial nitric oxide (NO) synthase, NO, and protein kinase G and the prostaglandin El and protein kinase A pathways [6]. Furthermore, the expressions of miR-328a, miR-342, and miR-376b were found to be upregulated in the CC of obese rats with ED [7]. Recently, we established an ED rat model by using cold stress combined with feeding with an estrogenlike diet (spinach and coriander) to explore the alteration of miRNAs in the ED model induced by cold stress combined with estrogen-like diet to better understand the pathophysiology of ED [8].
腮腺浅叶部分切除联合术中冰冻活检在治疗腮腺浅叶良性肿瘤中的应用

目的探讨腮腺浅叶部分切除联合术中冰冻活检在腮腺浅叶良性肿瘤治疗中的应用价值。方法回顾性分析采用腮腺浅叶部分切除联合术中冰冻活检治疗腮腺浅叶良性肿瘤126例(A组)及传统腮腺全切术治疗腮腺浅叶良性肿瘤100例(B组)的临床数据,比较两组病例近期及远期手术并发症的发生率及肿瘤复发率,并分析、讨论腮腺浅叶部分切除术的方法优势及注意事项。结果短期并发症(感觉减退发生率、短暂性面神经乏力发生率、感觉减退发生率、Frey综合征发生率),A组与B组比较,差异有统计学意义。A组病例中有1例患者术后病理结果提示低度恶性黏液表皮样癌,术后随访2年,未见复发。其余两组患者术后随访1~2年,未见复发。结论腮腺浅叶部分切除具有并发症发生率低,创伤小的优点,同时并不增加肿瘤复发率,联合术中冰冻活检可以避免术中漏诊恶性肿瘤,值得在腮腺浅叶良性肿瘤的手术治疗中推广。
基于ANSYS的副车架结构强度及模态分析

压裂车是石油压裂的核心设备之一,为了提高压裂车副车架的整体承载力,根据运载底盘的结构建立了压裂车副车架的三维模型,并运用有限元分析软件ANSYS对副车架及与其连接的附属支架进行了强度分析,通过分析确定了副车架受力薄弱的位置,为针对副车架结构强度的设计改进提供了理论依据;并对现有副车架进行模态分析,有效防止副车架与振动源发生谐振,确保了副车架作业过程中的可靠性,保证了整车的安全。
基于垂直扫成的三维打印支撑生成与优化研究

提出一种面向熔融沉积三维打印的支撑生成和优化算法,通过网格模型面片倾斜度与打印层高关系以及网格模型拓扑关系快速确定需要支撑的模型表面,将其纵向扫成为包含支撑体的三维网格模型,并对支撑面奇异点分裂以保证扫成模型为二维流形,基于该扫成模型与原始模型的关系,通过二维分层切片间的布尔操作求解得到层片化的支撑模型,然后综合支撑模型的可打印性因素,对上述支撑进行优化处理,得到理想可打印的三维支撑模型。通过复杂网格模型的三维支撑生成实例,验证了算法的有效性和鲁棒性。
核电站主泵法兰连接螺栓超声检测控制系统设计

传统手动超声检测系统效率低、漏检率高,制约了主泵法兰连接螺栓检测业务的发展,为此设计研发了主泵法兰连接螺栓在线自动超声检测系统。介绍了该超声检测系统结构组成、功能应用及相应的控制策略,通过采用PC机+Galil卡的分布式控制方式,以图形化编程语言LabVIEW编写系统控制软件,实现伺服电机的控制和扫查路径规划。试验证明,该系统具有良好的操作性,能有效提高主泵法兰连接螺栓缺陷的检出率和定位精度,可适用于其他大型螺栓的超声检查,具有广泛适用性。
对干姜附子汤作用的认识

从《伤寒论》干姜附子汤条文及对方中的药物干姜、附子的认识入手,结合条文内容对前人的研究进行深入探讨。在质疑的基础上,对干姜附子汤证少阴心肾阳虚之病机及干姜附子汤温补少阴心肾的作用进行分析。干姜附子汤证病机为少阴心肾阳虚,作用为先机温补而解除虚阳上越之势,而温补的方法在于一方面直接温补少阴,另一方面通过温补中焦起到培土治水的作用。本方的作用特点是先机温补而解除虚阳上越之势,间接促使少阴君火恢复的效果。通过对方中药物之间的配伍关系进行探索,深化对经方以及对应条文的认识与理解,从而可以帮助指导临床应用。
《黄帝内经》熨法的源流研究

熨法作为临床常用的外治方法拥有悠久的历史,其主要是利用温热的作用,达到温通筋络、温运脾胃、理气止痛等疗效,历代医家著书所载之内容多半与熨法治疗骨伤科疾病相关。诸多医学典籍中以《黄帝内经》(以下简称《内经》)及其注本对熨法的记载最多且详尽并有专篇论述。本文通过查阅相关文献典籍,对《内经》关于熨法的经文、药熨组方、制作过程、适应症及禁忌症等方面追本溯源,并综合历代医家的新观点,对中医熨法的源流进行深入研究,全方面了解熨法治疗的优势及特点,并将其与临床实际相结合,以期总结出一套适合国人的理论体系,更好地为大众健康服务。
Preparation of NiCoFe-hydroxide/polyaniline composite for enhanced-performance supercapacitors

Ternary NiCoFe layer hydroxides with different Ni/Co/Fe molar ratios were prepared using simple urea method. By finely tuning Ni/Co/Fe molar ratio, the optimized hydroxide (LDH2.0), a Ni/Co/Fe molar ratio of 2.0/1.0/1.0, provided high specific capacitance (408 F g~(-1) at 2.0Ag~(-1)) and good stability (90.9% retention over 1000 cycles) due to maximum crystallinity (91.35% crystallinity) and specific surface area (160m~2 g~(-1)). In order to further improve the electrochemical performances, the LDH2.0 was made into a composite (LDH/PANI) with polyaniline (PANI) via in situ polymerization of aniline monomer. The LDH/PANI composite had a much higher specific capacitance (717 F g~(-1) at 2.0Ag~(-1)) compared with the LDH2.0, and a significant improvement of cycleability (84.7% retention over 1000 cycles). The results indicated that the LDH/PANI had a synergistic effect of both components due to the complementary properties, which guaranteed a good electric contact and consequently increased the specific capacitance. These provided anewapproach for designing organic-inorganic composite materials with potential application in supercapacitors.
护士在预立医疗照护计划中的角色定位

阐述预立医疗照护计划与缓和医疗的内涵及关系,护士作为预立医疗照护计划中的主要成员,扮演着倡导者、教育者、发起者和协调者等多样角色。总结护士在现行医疗体系中开展预立医疗照护计划的影响因素;提出通过建立法律制度,开展教育培训,建立基于护患关系的干预模式,以促进护士参与预立医疗照护计划。
Altered chromatin recruitment by FOXA1 mutations promotes androgen independence and prostate cancer progression

Dear Editor,FOXA1,a forkhead (FKHD) family transcription factor,is highly expressed in the epithelium of endoderm-derived organs,including the prostate gland.Transgenic mouse studies have shown that FOXA1 expression is required for prostate epithelial cell differentiation and ductal morphogenesis during development and for the maintenance of this differentiated epithelial phenotype in the adult.Mechanistically,FOXA1 binds FKHD motifs in the DNA to open chromatin and increase local accessibility,thereby recruiting androgen receptor (AR) to prostate lineagespecific enhancers.AR mediates prostatic transcriptional program and normal prostate development and function.However,AR also plays a pivotal role in prostate cancer (PCa).Equilibrium between nuclear FOXA1 and AR levels is essential for defining a prostatic,rather than an oncogenic,AR program and for balancing cell differentiation and growth.In addition,FOXA1 has been shown to play androgen-independent roles in regulating epithelial-to-mesenchymal transition (EMT),cell invasion,and tumor metastasis.Recent studies have found FOXA1 among the most frequently mutated genes in PCa,with ~4% and ~12% mutation rates in localized tumors and metastatic castrationresistant prostate cancer (CRPC),respectively.A majority of these mutations cluster at the FKHD domain,especially around the Wing2 region.
婴儿期起病的扩张型心肌病二例

2例婴儿期起病的扩张型心肌病患儿均为女孩,均于1岁前起病,急性期主要表现为吐沫、拒乳、精神差、呻吟、呼吸闲难,以进食、哭闹等活动时明显,伴少尿、腹胀,例1既往活动后多汗,且有家族史。2例患儿在TNNT2基因上发现2种已报道杂合变异,其中例1父亲及胞妹携带相同致病变异,2例患儿及例1部分家系成员基因确诊为扩张型心肌病。TNNT2基因相关婴幼儿期起病的扩张型心肌病临床极为罕见。
经脐小切口在妇科腹腔镜手术标本取出中的应用

为了探讨经脐小切口在腹腔镜手术标本取出中的可行性。本文回顾性分析了北京同仁医院2018年4至12月妇科病房住院并行腹腔镜手术患者62例,采用经脐小切口,将手术标本套袋后取出。62例腹腔镜手术患者,切除标本套袋后经脐小切口均顺利取出,无破裂,无标本残留,无其他手术并发症发生,术后脐部切口愈合良好。经脐小切口充分利用脐部这一人体唯一的天然瘢痕部位,取出腹腔镜手术标本,符合微创原则,便捷有效,易于掌握。
Ultrasound for diagnosing new difficult laryngoscopy indicator: a prospective, self-controlled, assessor blinded, observational study

Background: Unpredictable difficult laryngoscopy (DL) remains a challenge for anesthesiologists, especially when difficult ventilation occurs during standard laryngoscopy. Accurate airway assessment should always be performed, but the common airway assessment methods only perform superficial screening. Thus, the deep laryngopharyngeal anatomy may not be evaluated. Ultrasound-based airway assessment has been recently proposed as a useful, simple, and non-invasive bedside tool as an adjunct to clinical methods, which may facilitate identification of DL. The present study aimed to determine the correlation between ultrasound-measured indicators and DL. Methods: Patients undergoing elective surgery under general anesthesia with tracheal intubation were enrolled. Ultrasonic airway assessments were performed before anesthesia induction. Ultrasound diagnostic indicators included the thickness and width of the base of the tongue, the angle between the epiglottis and glottis, the length of the thyrohyoid membrane, and the thickness of the lateral pharyngeal wall. A score of ≥3 in the Modified Cormack-Lehane Scoring System was used as a standard of DL and was also applied to divide patients into DL and non-DL groups. The area under the receiver operating characteristic (ROC) curve was used to evaluate the diagnostic ability of various diagnostic indicators. Results: A total of 499 patients were enrolled into non-DL and DL groups comprising 452 (452/499, 90.6%) and 47 (47/499, 9.4%) patients, respectively. One ultrasonic diagnoses indicator correlated with DL, namely, the angle between the epiglottis and glottis. When the angle between the epiglottis and glottis was 50°, the area under the ROC curve was maximum (0.902), and the best sensitivity (81%) and specificity (89%) were achieved. Conclusions: Airway ultrasounds should be considered to identify DL. The ultrasonic angle measured between the epiglottis and glottis is highly associated with DL, which may occur when the angle is less than 50°.
脊柱综合调理法治疗颈源性失眠40例

颈源性失眠是由于颈部疾患使交感神经受刺激,大脑兴奋性增高造成睡眠时间不足或睡眠不深的病症。可导致觉醒-睡眠中枢系统功能障碍,使大脑中枢的兴奋性增高或影响下丘脑的功能,同时可导致肩颈、背部的疼痛,疼痛的严重程度与睡眠障碍存在相关性。研究发现,颈椎病中颈源性失眠发生率约为40%~56%,其发病率很高,严重影响人们的生活和工作,对颈源性失眠进行及时有效的干预,将能显著提高人们的生活质量。笔者采用脊柱综合调理法治疗颈源性失眠40例,现报道如下。
Synthesis of a copolymer carrier for anticancer drug luteolin for targeting human breast cancer cells

OBJECTIVE: To focus a new chemoprevention approach that uses nanotechnology to deliver luteolin to human breast cancer cells (MCF-7), and its underlying mechanism. METHODS: Water-soluble copolymer-encapsulated nanoparticle-luteolin (CENL) was formulated using the hydrophobic drug luteolin. The ability to load and release he anticancer drug into/from the synthesized hyperbranched polyester was evaluated by high-performance liquid chromatography. The successful synthesis of CENL was supported by analytical techniques including fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, gel permeation chromatography, and dynamic light scattering. Cell viability was measured using the 3-(4, 5-dimethylthiazol-2-yl)-2, 5-diphenyltetrazolium bromide color method. Reactive oxygen species (ROS) were measured using a dichlorofluorescein probe and intracellular calcium (Cai2+) was evaluated with a flu3-AM probe. RESULTS: The results showed that the drug delivery system is stable and that the loading capacity is high. Treatment with nanoparticles containing luteolin and free luteolin resulted in cell death in breast cancer cells at high concentrations [IC_(50) (33 ± 4) and (48 ± 6) μM, respectively]. At high concentrations, CENL reduced cell viability and increased ROS and Cai2+ production. CONCLUSION: Our results demonstrate that CENL has potential for human breast cancer treatment.
A pharmacological approach to study the active compounds in Jinshui Huanxian formula in treatment of pulmonary fibrosis

OBJECTIVE:To study the active compounds in Jinshui Huanxian formula in the treatment of pulmonary fibrosis with a pharmacological approach.METHODS:A systems pharmacology model,incorporating active compounds and targets prediction,and herbal-compound-target-disease network analysis,was established to predict the active substances and therapeutic mechanisms of Jinshui Huanxian formula.All compounds from the herbs of Jinshui Huanxian formula were obtained from drug database and the literature.Then,we analyzed the potential of herbs by predicting oral bioavailability and drug-likeness index.The compounds with oral bioavailability≥ 30% and drug-likeness index ≥ 0.18 were obtained as candidate compounds for further analysis.We then used the systematic drug targeting tool to screen the targets for candidate compounds.The potential targets were projected into Therapeutic Target Database to collect their corresponding diseases.The candidate compounds,potential targets and their related diseases were applied to construct the compound-target and target-disease network.RESULTS:Totally 136 compounds from Jinshui Huanxian formula and 265 potential targets were found.Compound-target network analysis suggested that different herbal drugs contained in the Jinshui Huanxian formula could regulate these similar targets to probably exert synergistic effect.Moreover,target proteins were mainly related to oxidoreductase activity,nicotinamide adenine dinucleotide phosphate binding,and G-protein coupled amine receptor activity,which might be associated with the therapeutic mechanisms of Jinshui Huanxian formula.In addition,Jinshui Huanxian formula was probably efficient for many different diseases,such as respiratory tract diseases,neoplasm,nervous system diseases,and cardiovascular diseases,according to target-disease network.CONCLUSION:This study may provide a method to explore the potential active compounds in Jinshui Huanxian formula used to treat pulmonary fibrosis.
Wulong Xiaozheng Wan medicated serum inhibits epithelial-mesenchymal transition in human gastric carcinoma cell line BGC823 by modulation of transforming growth factor-β_1/Smad signaling

OBJECTIVE:To evaluate the effect of Wulong Xiaozheng Wan medicated serum on the epithelial-mesenchymal transition (EMT) of BGC823 cell induced by transforming growth factor-β_1 (TGF-β_1) and to explore its mechanism.METHODS:EMT model of BGC823 was stimulated by TGF-β_1.Wulong Xiaozheng Wan medicated serum and LY-364947 were used as intervention.The proliferation and adhesion of BGC823 were detected by 3-(4,5-dimethyl-2-thiazolyl)-2,5-diphenyl-2-H-tetrazolium bromide and flow cytometry was used to detect the apoptosis.The invasion and migration were detected by Transwell.The level of matrix metalloproteins was detected by enzyme-linked immunosorbent assay.The expressions of related proteins and mRNA of EMT marker and TGF-β_1/Smad signal pathway were detected by Western blot and reverse transcription-polymerase chain reaction.RESULTS:Compared with the TGF-β_1 group,Wulong Xiaozheng Wan medicated serum could inhibit the ability of proliferation,heterogeneous adhesion,invasion,and migration.It also promotes apoptosis and homotypic adhesion in BGC823,with a dose-dependent manner.Meanwhile,Wulong Xiaozheng Wan medicated serum could regulate the expression of related proteins and mRNA of TGF-β_1/Smad signaling pathway,and inhibit the expressions of EMT transcription factors and EMT markers.CONCLUSION:Wulong Xiaozheng Wan medicated serum inhibited epithelial-mesenchymal transition by down-regulated the expression of TβRI and the activation of TGF-β_1/Smad signaling pathway.
A MIXED FINITE ELEMENT METHOD FOR MULTI-CAVITY COMPUTATION IN INCOMPRESSIBLE NONLINEAR ELASTICITY

A mixed finite element method combining an isoparametric ${Q_2} - {P_1}$ element and an isoparametric $P_2^ + - {P_1}$ element is developed for the computation of multiple cavities in incompressible nonlinear elasticity. The method is analytically proved to be locking-free and convergent, and it is also shown to be numerically accurate and efficient by numerical experiments. Furthermore, the newly developed accurate method enables us to find an interesting new bifurcation phenomenon in multi-cavity growth.
A review on the flow instability of nanofluids

Nanofluid flow occurs in extensive applications, and hence has received widespread attention. The transition of nanofluids from laminar to turbulent flow is an important issue because of the differences in pressure drop and heat transfer between laminar and turbulent flow. Nanofluids will become unstable when they depart from the thermal equilibrium or dynamic equilibrium state. This paper conducts a brief review of research on the flow instability of nanofluids, including hydrodynamic instability and thermal instability. Some open questions on the subject are also identified.
Harmonic Maps in Connection of Phase Transitions with Higher Dimensional Potential Wells

This is in the sequel of authors’ paper[Lin,F.H.,Pan,X.B.and Wang,C.Y.,Phase transition for potentials of high dimensional wells,Comm.Pure Appl.Math.,65(6),2012,833–888] in which the authors had set up a program to verify rigorously some formal statements associated with the multiple component phase transitions with higher dimensional wells.The main goal here is to establish a regularity theory for minimizing maps with a rather non-standard boundary condition at the sharp interface of the transition.The authors also present a proof,under simplified geometric assumptions,of existence of local smooth gradient flows under such constraints on interfaces which are in the motion by the mean-curvature.In a forthcoming paper,a general theory for such gradient flows and its relation to Keller-Rubinstein-Sternberg’s work (in 1989) on the fast reaction,slow diffusion and motion by the mean curvature would be addressed.
改良残端切口以改善足趾移植再造拇手指外形

目的探讨改良再造指残端切口形成逆行筋膜皮瓣嵌入再造指掌侧以改善再造手指外形的临床疗效。方法对13例手指Ⅲ度、Ⅳ度、V度缺损的择期再造患者,采用携带足背皮瓣的第二足趾游离移植,改良设计残端切口,切取形成逆行筋膜皮瓣,嵌入再造指掌侧,以增加再造指周径,改善再造指外形。结果术后13指全部存活,随访时间为6~12个月。再造拇指外形明显改善,功能恢复良好,按中华医学会手外科学会上肢部分功能评定试用标准评定:优10例,良3例。结论改良再造指残端切口形成筋膜皮瓣嵌入再造指掌侧,可增加再造指周径,改善再造指外形,且手术操作简单,不增加创伤,临床疗效满意。
Flow-through腓动脉嵌合穿支皮瓣治疗上肢感染性骨缺损

目的探讨Flow-through腓动脉嵌合穿支皮瓣治疗上肢感染性骨缺损。方法本组24例,男15例,女9例;年龄19~56岁,平均34.5岁。车祸伤10例,机器绞轧伤7例,高处坠落伤3例,重物砸伤4例。肱骨7例,尺骨8例,桡骨9例。受伤至住院修复6个月内14例,超过6个月10例,最长26个月。9例合并软组织缺损,8例为贴骨瘢痕。骨缺损范围6~20cm,软组织缺损范围6 cm × 10 cm~15 cm × 21 cm。切取皮瓣面积6 cm × 10 cm~15 cm × 23 cm。清除死骨后测量骨质缺损的大小切取腓骨长度5~21 cm,钢板固定腓骨,腓动脉桥接吻合受区动脉两端,术后观察皮瓣(皮岛)了解腓骨瓣血运情况。结果移植组织全部存活,随访18~36个月,骨愈合率100%,皮瓣全部存活,弹性良好,色泽与受区相近。结论Flow-through腓动脉嵌合穿支皮瓣解决了骨髓炎造成的骨缺损和皮肤软组织缺损,同时保证或重建了肢体动脉的完整,是治疗上肢感染性骨缺损的理想方法。
游离移植第二足趾再造儿童拇指Ⅲ、IV度缺损

目的观察游离移植第二足趾再造拇指Ⅲ、IV度缺损的临床疗效。方法自2015年6月至2017年6月,我们采用游离移植第二足趾再造拇指缺损患儿11例,其中III度缺损5例,IV度缺损6例。再造拇指存活后指导患儿行科学的功能锻炼。足趾供区切取后直接缝合。结果术后随访时间为3~24个月,平均12个月,11例再造拇指均存活,功能恢复满意,均能完成对指、捏握功能,按照中华医学会手外科学会上肢部分功能评定试用标准评价:优8例,良3例。结论游离移植第二足趾再造拇指可获得满意的临床效果,是一种儿童拇指再造较为理想的方法。
Moth-eye Structured Polydimethylsiloxane Films for High-Efficiency Perovskite Solar Cells

Large-area polydimethylsiloxane (PDMS) films with variably sized moth-eye structures were fabricated to improve the efficiency of perovskite solar cells.An approach that incorporated photolithography,bilayer PDMS deposition and replication was used in the fabrication process.By simply attaching the moth-eye PDMS films to the transparent substrates of perovskite solar cells,the optical properties of the devices could be tuned by changing the size of the moth-eye structures.The device with 300-nm moth-eye PDMS films greatly enhanced power conversion efficiency of~21% due to the antireflective effect of the moth-eye structure.Furthermore,beautiful coloration was observed on the 1000-nm moth-eye PDMS films through optical interference caused by the diffraction grating effect.Our results imply that moth-eye PDMS films can greatly enhance the efficiency of perovskite solar cells and building-integrated photovoltaics.
Surface Passivation of Perovskite Solar Cells Toward Improved Efficiency and Stability

The advancement of perovskite solar cells (PVSCs) technology toward commercialized promotion needs high efficiency and optimum stability.By introducing a small molecular material such as tetratetracontane (TTC,CH_3(CH_2)_(42)CH_3) at the fullerene (C_(60))/perovskite interface of planar p-i-n PVSCs,we significantly reduced the interfacial traps,thereby suppressing electron recombination and facilitating electron extraction.Consequently,an improved efficiency of 20.05% was achieved with a high fill factor of 79.4%,which is one of the best performances for small molecular-modified PVSCs.Moreover,the hydrophobic TTC successfully protects the perovskite film from water damage.As a result,we realized a better long-term stability that maintains 87% of the initial efficiency after continuous exposure for 200 h in air.