mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Hot Deformation Behavior of a New Nuclear Use Reduced Activation Ferritic/Martensitic Steel

The hot deformation behavior and workability of a new reduced activation ferritic/martensitic steel named SIMP steel for accelerator-driven system were studied. The flow curve and its microstructure were studied at 900-1200 °C and strain rate range of 0.001-10 s~(-1). The results showed that the deformation behavior of the SIMP steel during hot compression could be manifested by the Zener-Hollomon parameter in an exponent-type equation. Based on the obtained constitutive equation, the calculated flow stresses were in agreement with the experimentally measured ones, and the average activity energies QDRV and QHW for the initiation of dynamic recrystallization and the peak strain were calculated to be 476.1 kJ/mol and 462.7 kJ/mol, respectively. Furthermore, based on the processing maps and microstructure evolution, the optimum processing condition for the SIMP steel was determined to be 1050-1200 °C/0.001-0.1 s~(-1).
直肠癌组织中肿瘤浸润性树突状细胞数量和表型的改变及临床意义

目的:探讨直肠癌组织中肿瘤浸润性树突状细胞数量和表型的改变及临床意义。方法:前瞻性收集直肠癌患者50例作为观察组,同期收集直肠良性肿块50例作为对照组,手术切除后,检测组织中肿瘤浸润性树突状细胞数量和表型,分析两组差异;同时分析直肠癌组织中肿瘤浸润性树突状细胞数量、表型与患者临床病理特征的相关性。结果:观察组直肠癌组织中肿瘤浸润性树突状细胞密度明显低于对照组([ 8.17±2.42) vs.(9.65±2.28), P=0.002]、MHC-II阳性DC(%)和CD54阳性DC(%)亦均低于对照组([ 6.65±2.42) %vs.(9.49±2.48)%, P=0.000]和[(7.49±2.33) %vs.(9.82±2.52)%,P=0.000]。TNM分期III者肿瘤浸润性树突状细胞密度低于I、II期者[(7.60±1.73)vs. (8.55±1.47),P=0.042]、MHC-II阳性DC百分比及CD54阳性DC百分比亦均低于I、II期者[(5.41±1.82) %vs. (7.48±1.94)%,P=0.000;(6.68±2.02) %vs. (8.03±1.97)%,P=0.023]。肿瘤最大直径≥ 5 cm者肿瘤浸润性树突状细胞密度低于肿瘤最大直径<5 cm者[(7.12±1.89)vs. (9.06±2.01),P=0.001]、MHC-II阳性DC百分比及CD54阳性DC百分比亦低于肿瘤最大直径<5 cm者[(5.41±1.91) %vs.(7.71±1.88)%,P=0.000;(6.32±2.02) %vs. (8.49±1.94)%,P=0.023]。结论:肿瘤浸润性树突状细胞在直肠癌组织中低表达,不成熟细胞比例增加,与TNM分期和肿瘤直径有关。
下肢动脉旁路移植术与腔内血管成形术治疗老年人下肢动脉硬化闭塞症的安全性和有效性探讨

目的:比较下肢动脉旁路移植术与腔内血管成形术治疗老年人下肢动脉硬化闭塞症的安全性和有效性。方法:回顾性分析2015年8月—2017年8月于治疗的87例老年下肢动脉硬化闭塞症患者的资料,根据治疗方式不同分为血管成形组(n=45,行腔内血管成形术)和旁路移植组(n=42,行下肢动脉旁路移植术),比较两组患者的手术成功率、足背动脉血流动力学和下肢神经传导速度、VAS评分、靶血管晚期管腔损失(LLL)、通畅率、再狭窄率、踝肱指数(ABI)以及临床不良事件发生情况。结果:血管成形组与旁路移植组患者的手术成功率无统计学差异(P>0.05);术后1个月两组患者手术前后足背动脉血流动力学和下肢神经传导速度均优于术前,差异均有统计学意义(均P<0.05),但组间差异均无统计学意义(均P>0.05);与术前相比,两组患者术后1个月的VAS评分明显降低(P<0.05),但术后组间无统计学差异(P>0.05);两组患者术后ABI较术前均有显著改善,差异均有统计学意义(均P<0.05);但各时间点组间差异均无统计学意义(均P>0.05)。两组患者术后6个月LLL、通畅率、再狭窄率比较均无统计学差异(均P>0.05)。两组并发症发生率有统计学差异(P<0.05)。随访期间,两组均未出现死亡或截肢等严重不良事件。结论:腔内血管成形术与下肢动脉旁路移植术治疗老年下肢动脉硬化闭塞症临床疗效相当,均安全可行,临床应根据患者自身情况采取针对性的治疗方案。
腹壁巨大韧带样瘤1例报告并文献复习

腹壁韧带样瘤(abdominal desmoid tumor)来源于腹壁筋膜或肌腱膜组织,成纤维细胞沿肌纤维方向交织生长,无包膜,易沿筋膜或肌腱膜表面侵袭周围组织,罕见远处转移,亦称为侵袭性纤维瘤病(aggressive fibromatosis)、硬纤维瘤(desmoid tumor)等,曾被描述为是一种具有侵袭性、局部破坏性和易复发性等恶性肿瘤生长特征的良性软组织肿瘤,现在已被证实为是一种罕见的低度恶性软组织肿瘤。据文献报道,腹壁韧带样瘤罕见,可发生于各解剖部位,见于各年龄段,但更多发生于20~40岁的年轻患者,发病率约为0.0002%~ 0.0005%,近20年有所增加。该病与几种遗传性癌症的倾向有关,包括家族性腺瘤样息肉病和加德纳氏综合征等。笔者遇到1例术前怀疑为腹壁子宫内膜异位症(内异症),术后病理确诊为腹壁韧带样瘤的病例。现结合文献,讨论该病例临床表现、辅助检查特点、病例特征及治疗与预后的特殊性,以供临床医生借鉴。
PET-CT和PET-MRI在常见妇科恶性肿瘤诊治中的应用价值

近年来,妇科恶性肿瘤的发病率呈逐年上升趋势,其中最常见的三大恶性肿瘤子宫颈癌、子宫内膜癌和卵巢癌,已成为严重危害女性健康的主要杀手,肿瘤的转移和复发是影响预后的主要问题,若能及时发现、早期治疗,可以明显改善预后。正电子发射断层扫描/X射线计算机断层显像(PET-CT)兼有PET反映人体组织细胞的新陈代谢和CT提供组织器官的精确解剖定位的功能,能提供肿瘤早期的功能和代谢信息,尤其在发现小淋巴结转移及探测残留与复发病灶方面具有很大的优势。正电子发射断层扫描/磁共振成像(PETMRI)是将功能和解剖相结合的又一新技术,具有更好的软组织对比和空间分辨率,逐步开始应用于临床。文章旨在就PET-CT和PET-MRI在常见妇科恶性肿瘤诊断、分期、治疗效果评价、预后判断和监测复发方面的应用做一综述。
Soft-sensing modeling and intelligent optimal control strategy for distillation yield rate of atmospheric distillation oil refining process

It is a challenge to conserve energy for the large-scale petrochemical enterprises due to complex production process and energy diversification. As critical energy consumption equipment of atmospheric distillation oil refining process, the atmospheric distillation column is paid more attention to save energy. In this paper, the optimal problemof energy utilization efficiency of the atmospheric distillation columnis solved by defining a newenergy efficiency indicator — the distillation yield rate of unit energy consumption fromthe perspective ofmaterial flow and energy flow, and a soft-sensing model for this new energy efficiency indicator with respect to the multiple working conditions and intelligent optimizing control strategy are suggested for both increasing distillation yield and decreasing energy consumption in oil refining process. It is found that the energy utilization efficiency level of the atmospheric distillation column depends closely on the typicalworking conditions of the oil refining process,which result by changing the outlet temperature, the overhead temperature, and the bottomliquid level of the atmospheric pressure tower. The fuzzy C-means algorithm is used to classify the typical operation conditions of atmospheric distillation in oil refining process. Furthermore, the LSSVM method optimized with the improved particle swarm optimization is used to model the distillation rate of unit energy consumption. Then online optimization of oil refining process is realized by optimizing the outlet temperature, the overhead temperature with IPSO again. Simulation comparative analyses aremade by empirical data to verify the effectiveness of the proposed solution.
New repairable system model with two types repair based on extended geometric process

A simple repairable system with one repairman is considered. As the system working age is up to a specified time T, the repairman will repair the component preventively, and it will go back to work as soon as the repair finished. When the system failure, the repairman repair it immediately. The time interval of the preventive repair and the failure correction is described with the extended geometric process. Different from the available replacement policy which is usually based on the failure number or the working age of the system, the bivariate policy (T,N) is considered. The explicit expression of the long-run average cost rate function C(T,N) of the system is derived. Through alternatively minimize the cost rate function C(T,N), the optimal replacement policy (T∗,N∗) is obtained, and it proves that the optimal policy is unique. Numerical cases illustrate the conclusion, and the sensitivity analysis of the parameters is carried out.
Three Types of Spatial Function Zoning in Key Ecological Function Areas Based on Ecological and Economic Coordinated Development:A Case Study of Tacheng Basin,China

Three types of spatial function zoning is an effective measure for regional environmental protection and orderly development.For ecological and economic coordinated development,spatial function zones should be divided scientifically to clear its direction of development and protection.Therefore,based on ecological constraints,a beneficial discussion would be about the key ecological function areas adopting the concept of ecological protection restriction and supporting socioeconomic development for spatial function zoning.In this paper,the researchers,taking Tacheng Basin,Xinjiang of China as an example,choose township as basic research unit and set up an evaluation index system from three aspects,namely,ecological protection suitability,agricultural production suitability,and urban development suitability,which are analyzed by using spatial analysis functions and exclusive matrix method.The results showed that:1) This paper formed a set of multilevel evaluation index systems for three types of spatial function zoning of the key ecological function areas based on a novel perspective by scientifically dividing Tacheng Basin into ecological space,agricultural space,and urban space,which realized the integration and scientific orientation for spatial function at the township scale.2) Under the guidance of three types of spatial pattern,the functional orientation and suggestions of development and protection was clearly defined for ecological protection zones,ecological economic zones,agricultural production zones,and urban development zones.3) A new idea of space governance is provided to promote the coordinated and sustainable development between ecology and economy,which can break the traditional mode of thinking about regional economic development,and offers a scientific basis and reference for macro decision-making.
Spatio-temporal Pattern Characteristics of Relationship Between Urbanization and Economic Development at County Level in China

The relationship between China's urbanization and economic development (RCUED) is an important concern nationwide.As important actors in regional strategy and policy,county-level regions have played an increasingly significant role in the development of China's social economy.However,the existing research on the RCUED lacks the fine depiction of the county-level administrative units.Using 2000 and 2010 census data and the statistical analysis method,we uncovered the evolution characteristics of China's urbanization and economic development and conducted a quantitative identification for the RCUED with improved methods using the quadrant map approach.In addition,we investigated the spatial correlation effect of the RCUED using the spatial autocorrelation analysis method.The results were as follows:1) In general,a high degree of matching exists between China's urbanization and economic development at the county level at the significance level of 0.01.The correlation coefficients between China's urbanization and economic development in 2000 and 2010 were 0.608 and 0.603,respectively.2) A significant regional difference exists in the RCUED at the county level.Based on a comparative analysis of 2276 county units in China in the two years,we found that county units can be categorized as under- urbanized,basic coordination and over-urbanized in various areas.No situation was observed where urbanization seriously lagged behind the economic development level,so the levels of urbanization and economic development appear to be basically coordinated,and the coordination state may be gradually optimized over time.3) Over time,the spatial dependency of the RCUED has weakened and the spatial heterogeneity has increased.Northeast China has always been an area characterized by over-urbanization.The number of county units classified as under-urbanized has begun to decline in eastern coastal urban agglomeration areas,while counties rich in resources have transformed from having point-shaped over-urbanization to plane-shaped under-urbanization along the northern border,and the number of over-urbanized county units has increased in the middle reaches of the Yangtze River.4) ‘Lag-lag' type and ‘advance- advance' type accounted for 68% of all counties in China,and these counties were shown to have obvious spatial differentiation characteristics.
Effects of systematic octupole coupling resonances

The Xi’an proton accelerator facility synchrotron lattice has a systematic fourth-order resonance. The systematic octupole component in dipole magnets is found to have no adverse effect on the dynamic aperture in multiparticle tracking. The frequency map shows particles locked onto the 2v_x - 2v_z = 0 resonance. However, we will show that the instantaneous betatron tunes can vary widely around the resonance line for particles locked onto the resonance.
指蹼穿支为蒂的超长逆行掌背岛状皮瓣修复手指侧方大面积软组织缺损

目的探讨以指蹼动脉穿支为蒂的超长逆行掌背岛状皮瓣修复手指侧方的大面积软组织缺损的临床应用.方法自2016年1月至2017年12月,以指蹼动脉穿支为蒂的逆行掌背岛状皮瓣修复手指侧方软组织缺损创面12例,皮瓣大小为6.5 cm×l.6 cm~7.5 cm×3.0 cm.观察术后皮瓣成活情况和患者手指外形与功能的恢复情况.术后门诊定期随访.结果术后创面愈合良好,皮瓣全部成活.术后随访9~16个月,皮瓣质地柔软,手指外形与功能恢复满意,皮瓣感觉恢复良好.功能恢复根据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1例、差1例.结论以指蹼动脉穿支为蒂的超长逆行掌背岛状皮瓣修复手指侧方软组织缺损,血供可靠,皮瓣修复范围大,质地良好,对于手指侧方大面积的软组织缺损是一种较理想的方法.
Coefficient of Engine Flexibility as a Basis for the Assessment of Vehicle Tractive Performance

The paper attempts to analyze full load characteristics of over 500 combustion engines. Using statistical tools, the author determined the value of the coefficient of flexibility. Engine flexibility is the capability of the engine to adapt to varying loads. Importantly, in the investigations, the author took into account the parameters calculated in the course of the investigations on a chassis dynamometer, i.e., actual, not taken from technical specifications of brand new vehicles. Different stages of operating wear allow a better characterization of the population. Subsequent utilization of the results in tractive calculations is more reliable. The engines were divided into in six groups, depending on the type of fuel system: fuel injected gasoline and turbocharged gasoline, spark ignition LPG, naturally aspirated diesel and turbocharged diesel. However, engines running on alternative fuels are characterized with a greater flexibility than the fuel injected base engines. Conformity of flexibility of fuel injected and LPG IV generation engines have been observed, which confirms the appropriateness of engine adaptation to alternative fueling. Gasoline engine supercharging allowed a reduction of the maximum engine speed of the maximum torque, which extends the range of analyzable speeds for flexibility and consequently, the flexibility as such.
Design and Experimental Research on Seedling Pick-Up Mechanism of Planetary Gear Train with Combined Non-circular Gear Transmission

Currently, transplanting mechanisms for dryland plug seedlings in China are mainly semiautomatic and have low efficiency. The rotary seedling pick-up mechanism with a planetary gear train for non-uniform intermittent transmission, and a concave and convex locking arc device, has a large rigid impact. To solve these problems, according to the design requirements for a dryland plug seedling transplanting mechanism, a rotary seedling pick-up mechanism of a planetary gear train with combined non-circular gear transmission of incomplete eccentric circular and noncircular gears was proposed. This has the characteristics of two-times greater fluctuation of the transmission ratio in a cycle, and can achieve a non-uniform continuous drive. Through analysis of the working principle of the seedling pick-up mechanism, its kinematics model was established. The human–computer interaction optimization method and self-developed computer-aided analysis and optimization software were used to obtain a set of parameters that satisfy the operation requirements of the seedling pick-up mechanism. According to the optimized parameters, the structure of the seedling pick-up mechanism was designed, a virtual prototype of the mechanism was created, and a physical prototype was manufactured. A virtual motion simulation of the mechanism was performed, high-speed photographic kinematics tests were conducted, and the kinematic properties of the physical prototype were investigated, whereby the correctness of the theoretical model and the optimized design of the mechanism were verified. Further, laboratory seedling pick-up tests were conducted. The success ratio of seedling pick-up was 93.8 %when the seedling pick-up efficiency of the mechanism was 60 plants per minute per row, indicating that the mechanism has a high efficiency and success ratio for seedling pick-up and can be applied to a dryland plug seedling transplanter.
Multi-scale fatigue damage model for steel structures working under high temperature

In order to better understand the fatigue mechanisms of steel structures working under high temperature,a multi-scale fatigue damage model at high temperature is developed.In the developed model,the macroscopic fatigue damage of metallic materials due to the collective behavior of micro-cracks is quantified by using the generalized self-consistent method.The influence of temperature on fatigue damage of steel structures is quantified by using the previous creep damage model.In addition,the fatigue damage at room temperature and creep damage is coupled in the multi-scale fatigue damage model.The validity of the developed multi-scale damage model is verified by comparing the predicted damage evolution curve with the experimental data.It shows that the developed model is effectiveness.Finally,the fatigue analysis on steel crane runway girders (CRGs) of industrial steel melt shop is performed based on the developed model.
Optimization of Ethylene Glycol Doped PEDOT:PSS Transparent Electrodes for Flexible Organic Solar Cells by Drop-coating Method

Fabrication of flexible transparent electrodes (FTEs) is one of the core technologies in the field of flexible electronics. Among multiple choices of FTEs, poly(3,4-ethylenedioxythiophene):poly(styrene-sulfonic acid) (PEDOT:PSS) has shown its promising application in roll-to-roll manufacturing. A simple yet effective method for substantially boosting the conductivity of these conducting polymer films without causing large-domain aggregations is by adding ethylene glycol (EG) as dopant. Herein, we investigated in detail the effects of the secondary solvent of ethylene glycol (EG) on the optical and electrical characteristics of PEDOT:PSS films. The modified PEDOT:PSS FTEs were deposited using drop-coating techniques as it had greater compatibility for large-area samples than the conventional spin-coating method did. The 6 %EG-doped PEDOT:PSS FTE via drop-coating method achieved a high figure of merit (FoM) value of 47.24 and the devices fabricated using the optimal PEDOT:PSS FTE yielded a high power conversion efficiency (PCE) of 8.89%, mostly attributed to the modified PEDOT:PSS films that had excellent optical and electrical characteristics with low surface roughness. These results suggested that EG-doping could effectively boost the conductivity of PEDOT:PSS films and that the modified PEDOT:PSS FTE is suitable for roll-to-roll manufacturing in the future.
The Effect of Super Volcanic Eruptions on Ozone Depletion in a Chemistry–Climate Model

With the gradual yet unequivocal phasing out of ozone depleting substances (ODSs),the environmental crisis caused by the discovery of an ozone hole over the Antarctic has lessened in severity and a promising recovery of the ozone layer is predicted in this century.However,strong volcanic activity can also cause ozone depletion that might be severe enough to threaten the existence of life on Earth.In this study,a transport model and a coupled chemistry–climate model were used to simulate the impacts of super volcanoes on ozone depletion.The volcanic eruptions in the experiments were the 1991 Mount Pinatubo eruption and a 100×Pinatubo size eruption.The results show that the percentage of global mean total column ozone depletion in the 2050 RCP8.5 100×Pinatubo scenario is approximately 6% compared to two years before the eruption and 6.4% in tropics.An identical simulation,100×Pinatubo eruption only with natural source ODSs,produces an ozone depletion of 2.5% compared to two years before the eruption,and with 4.4% loss in the tropics.Based on the model results,the reduced ODSs and stratospheric cooling lighten the ozone depletion after super volcanic eruption.
Downregulation of serum CXCL4L1 predicts progression and poor prognosis in prostate cancer patients treated by radical prostatectomy

Our previous study found that plate factor-4 variant(CXCL4L1) was downregulated in the serum of patients with prostate cancer(PCa). The aim of the present study was to investigate the prognostic value of CXCL4L1 in PCa. In total, 213 PCa patients treated with radical prostatectomy were enrolled and peripheral blood samples of all patients were collected. Expression of serum CXCL4L1 in patients with different tumor stages and grades were measured by enzyme-linked immunosorbent assay(ELISA). The Kaplan-Meier method was applied to estimate the progression to castration-resistant prostate cancer(CRPC), metastasis, biochemical recurrence(BCR)-free survival, and overall survival(OS). Prognostic factors for BCR-free survival and OS were determined by univariate and multivariate analyses using the Cox proportional hazards regression model. The expression of CXCL4L1 was significantly lower in PCa patients with advanced pathological tumor stage, high-grade Gleason score, and metastasis. Moreover, downregulation of CXCL4L1 not only strongly correlated with aggressive clinicopathological features, but also predicted tumor progression and unfavorable outcomes. Finally, multivariate Cox regression analyses identified CXCL4L1 as an independent prognostic factor for both BCR-free survival(hazard ratio [HR]: 2.03, 95% confidence interval [CI]: 1.26-3.27; P = 0.004) and OS(HR: 2.26, 95% CI: 1.07-4.79; P= 0.033). In conclusion, our results indicate that CXCL4L1 might serve as a novel and promising prognostic biomarker for patients with PCa and potential therapeutic target in the future.
Removal of gaseous acetic acid using ionic liquid [EMIM][BF_4]

This work proposed to use the ionic liquid [EMIM][BF_4] as absorbent for the absorption of gaseous acetic acid.The feasibility of this technology was investigated from molecular level to industrial scale.The acetic acid absorption experiment was carried out using [EMIM][BF_4],and the removal ratio of acetic acid in the gas product can achieve 88.6% at 20 ℃ under atmospheric pressure at the laboratory scale.Based on the experimental results,a reliable strict equilibrium phase model embedding the parameters of the UNIFAC model was established.On this basis,the conceptual process design and optimization of acetic acid removal by [EMIM][BF_4] at an industrial scale was done,and the most suitable design and operation parameters were obtained.For a further step,the binding energy between [EMIM][BF_4] and acetic acid was calculated to give some insights into the separation mechanism,and the results indicate that the interaction between acetic acid and IL is much stronger than that between nitrogen and IL.Moreover,hydrogen bond can be formed between the cation-acetic acid as well as the anion-acetic acid.
Degradation mechanism of tin phosphide as Na-ion battery negative electrode

The degradation mechanism of an Sn_4P_3 electrode as Na-ion battery anode was investigated by using a transmission electron microscopic observation.At the first desodiation,we confirmed that Sn nanoparticles with 6 nm in size were dispersed in an amorphous-like P matrix.Compared to this,we observed aggregated Sn particles with sizes exceeding 50 nm after the drastic capacity fading.The capacity fading mechanism was for the first time confirmed to be Sn aggregation.To improve the capacity decay,we carried out the two kinds of charge-discharge cycling tests under the reduced volume changes of Sn particles and P matrix by limiting desodiation reactions of NaeSn and Na_3P,respectively.The Sn_4P_3 electrode exhibited an excellent cyclability with the discharge capacity of 500 mA h g~(-1) for 420 cycles under the limited desodiation,whereas the capacity decay was accelerated under the limited sodiation.The results suggest that the Sn aggregation can be improved by the reduced volume change of the P matrix,and that it is very effective for improving anode performance of Sn_4P_3 electrode.
Dominant role of wettability in improving the specific capacitance

Here we report a strategy to enhance the energy density of supercapacitors by increasing the utilization rate of the specific surface area (SSA) via wettability improvement.The nonporous gold (NPG) film is used as the electrodes and the ionic liquid [EMIM]BF_4 is the electrolyte.When the electrode is coated by paraffin,an increase of the contact angle leads to a remarkable reduction of the specific capacitance.While when acetonitrile is added into the electrolyte,the contact angle is decreased and the utilization rate of SSA is improved,which results in an increase of the specific capacitance.The addition of isopropyl acetate into the electrolyte leads to a further increase of the specific capacitance.To generalize the role of the wettability in improving the energy density,a carbon-based electrode is evaluated in the solution of potassium hydroxide.An addition of propyl alcohol into the potassium hydroxide solution leads to an increase of the specific capacitance,as well as a long-term stability of the supercapacitor.The role of conductivity in this study is excluded by designing experiments.This paper highlights the significance of wettability in determining the specific capacitance,showing an alternative to improve the energy density of supercapacitors.