mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Fabricate organic thermoelectric modules use modified PCBM and PEDOT:PSS materials

In this paper, we fabricated an organic thermoelectric (TE) device with modified [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) and poly(3,4-ethylene-dioxythiophene) polystyrene sulfonate (PEDOT:PSS); the device showed good stability in air condition. For n-leg, PCBM were doped with acridine orange base (3,6-bis (dimethylamino)acridine) (AOB) and l,3-dimethyl-2,3-dihydro-1H-benzoimidazole (N-DMBI). Co-doped PCBM utilizes synergistic effects of AOB and N-DMBI, resulting in excellent electrical conductivity and Seebeck coefficient values reaching 2 S/cm and -500 μV/K,respectively, at room temperature with dopant molar ratio of 0.11. P-type leg used modified PEDOT:PSS. Based on modified PCBM and PEDOT:PSS materials,we fabricated a TE module device with 48 p-type and n-type thermocouple and tested their output voltage, short current, and power. Output voltage measured -0.82 V,and generated power reached almost 945 μW with 75 K temperature gradient at 453 K hot-side temperature. These promising results showed potential of modified PEDOT and PCBM as TE materials for application in device optimization.
Developmental pathways associated with cancer metastasis: Notch, Wnt, and Hedgehog

Master developmental pathways, such as Notch, Wnt, and Hedgehog, are signaling systems that control proliferation, cell death, motility, migration, and sternness. These systems are not only commonly activated in many solid tumors, where they drive or contribute to cancer initiation, but also in primary and metastatic tumor development. The reactivation of developmental pathways in cancer stroma favors the development of cancer stem cells and allows their maintenance, indicating these signaling pathways as particularly attractive targets for efficient anticancer therapies, especially in advanced primary tumors and metastatic cancers. Metastasis is the worst feature of cancer development. This feature results from a cascade of events emerging from the hijacking of epithelial-mesenchymal transition, angiogenesis, migration, and invasion by transforming cells and is associated with poor survival, drug resistance, and tumor relapse. In the present review, we summarize and discuss experimental data suggesting pivotal roles for developmental pathways in cancer development and metastasis, considering the therapeutic potential. Emerging targeted antimetastatic therapies based on Notch, Wnt, and Hedgehog pathways are also discussed.
Regional wind power forecasting model with NWP grid data optimized

Unlike the traditional fossil energy, wind, as the clean renewable energy, can reduce the emission of the greenhouse gas. To take full advantage of the environmental benefits of wind energy, wind power forecasting has to be studied to overcome the troubles brought by the variable nature of wind. Power forecasting for regional wind farm groups is the problem that many power system operators care about. The high-dimensional feature sets with redundant information are frequently encountered when dealing with this problem. In this paper, two kinds of feature set construction methods are proposed which can achieve the proper feature set either by selecting the subsets or by transforming the original variables with specific combinations. The former method selects the subset according to the criterion of minimal-redundancymaximal-relevance (mRMR), while the latter does so based on the method of principal component analysis (PCA). A locally weighted learning method is also proposed to utilize the processed feature set to produce the power forecast results. The proposed model is simple and easy to use with parameters optimized automatically. Finally, a case study of 28 wind farms in East China is provided to verify the effectiveness of the proposed method.
Transport through a quantum dot coupled to two Majorana bound states

We investigate electron transport inside a ring system composed of a quantum dot (QD) coupled to two Majorana bound states confined at the ends of a one-dimensional topological superconductor nanowire. By tuning the magnetic flux threading through the ring, the model system we consider can be switched into states with or without zero-energy modes when the nanowire is in its topological phase. We find that the Fano profile in the conductance spectrum due to the interference between bound and continuum states exhibits markedly different features for these two different situations, which consequently can be used to detect the Majorana zero-energy mode. Most interestingly, as a periodic function of magnetic flux, the conductance shows 2π periodicity when the two Majorana bound states are nonoverlapping (as in an infinitely long nanowire) but displays 4π periodicity when the overlapping becomes nonzero (as in a finite length nanowire). We map the model system into a QD-Kitaev ring in the Majorana fermion representation and affirm these different characteristics by checking the energy spectrum.
Routing protocol for wireless quantum multi-hop mesh backbone network based on partially entangled GHZ state

Quantum multi-hop teleportation is important in the field of quantum communication. In this study, we propose a quantum multi-hop communication model and a quantum routing protocol with multi-hop teleportation for wireless mesh backbone networks. Based on an analysis of quantum multi-hop protocols, a partially entangled Greenberger-Horne-Zeilinger (GHZ) state is selected as the quantum channel for the proposed protocol. Both quantum and classical wireless channels exist between two neighboring nodes along the route. With the proposed routing protocol, quantum information can be transmitted hop by hop from the source node to the destination node. Based on multi-hop teleportation based on the partially entangled GHZ state, a quantum route established with the minimum number of hops. The difference between our routing protocol and the classical one is that in the former, the processes used to find a quantum route and establish quantum channel entanglement occur simultaneously. The Bell state measurement results of each hop are piggybacked to quantum route finding information. This method reduces the total number of packets and the magnitude of air inter-face delay. The deduction of the establishment of a quantum channel between source and destination is also presented here. The final success probability of quantum multi-hop teleportation in wireless mesh backbone networks was simulated and analyzed. Our research shows that quantum multi-hop teleportation in wireless mesh backbone networks through a partially entangled GHZ state is feasible.
Topological nodal line semimetals predicted from first-principles calculations

Topological semimetals are newly discovered states of quantum matter, which have extended the concept of topological states from insulators to metals and attracted great research interest in recent years. In general, there are three kinds of topological semimetals, namely Dirac semimetals, Weyl semimetals, and nodal line semimetals. Nodal line semimetals can be considered as precursor states for other topological states. For example, starting from such nodal line states, the nodal line structure might evolve into Weyl points, convert into Dirac points, or become a topological insulator by introducing the spin-orbit coupling (SOC) or mass term. In this review paper, we introduce theoretical materials that show the nodal line semimetal state,including the all-carbon Mackay-Terrones crystal (MTC), anti-perovskite Cu_3PdN,pressed black phosphorus, and the CaP_3 family of materials, and we present the design principles for obtaining such novel states of matter.
Magnetoelectric effects in multiferroic laminated plates with imperfect interfaces

Two-dimensional (2D) equations for multiferroic (MF) laminated plates with imperfect interfaces are established in this paper. The interface between two adjacent sublayers, which are not perfectly bonded together, is modeled as a general spring-type layer. The mechanical displacements, and the electric and magnetic potentials of the two adjacent layers are assumed to be discontinuous at the interface. As an example, the influences of imperfect interfaces on the magnetoelectric (ME) coupling effects in an MF sandwich plate are investigated with the established 2D governing equations. Numerical results show that the imperfect interfaces have a significant impact on the ME coupling effects in MF laminated structures.
Similitude design for the vibration problems of plates and shells: A review

Similitude design plays a vital role in the analysis of vibration and shock problems encountered in large engineering equipment. Similitude design, including dimensional analysis and governing equation method, is founded on the dynamic similitude theory. This study reviews the application of similitude design methods in engineering practice and summarizes the major achievements of the dynamic similitude theory in structural vibration and shock problems in different fields, including marine structures, civil engineering structures, and large power equipment. This study also reviews the dynamic similitude design methods for thin-walled and composite material plates and shells, including the most recent work published by the authors. Structure sensitivity analysis is used to evaluate the scaling factors to attain accurate distorted scaling laws. Finally, this study discusses the existing problems and the potential of the dynamic similitude theory for the analysis of vibration and shock problems of structures.
Mechatronic design of a novel linear compliant positioning stage with large travel range and high out-of-plane payload capacity

Most of the XY positioning stages proposed in previous studies are mainly designed by considering only a single performance indicator of the stage. As a result, the other performance indicators are relatively weak. In this study, a 2-degree-of-freedom linear compliant positioning stage (LCPS) is developed by mechatronic design to balance the interacting performance indicators and realize the desired positioning stage. The key parameters and the coupling of the structure and actuators are completely considered in the design. The LCPS consists of four voice coil motors (VCMs), which are conformally designed for compactness, and six spatial leaf spring parallelograms. These parallelograms are serially connected for a large travel range and a high out-of-plane payload capacity. The mechatronic model is established by matrix structural analysis for structural modeling and by Kirchhoff's law for the VCMs. The sensitivities of the key parameters are analyzed, and the design parameters are subsequently determined. The analytical model of the stage is confirmed by experiments. The stage has a travel range of 4.4 mmx 7.0 mm and a 0.16% area ratio of workspace to the outer dimension of the stage. The values of these performance indicators are greater than those of any existing stage reported in the literature. The closed-loop bandwidth is 9.5 Hz in both working directions. The stage can track a circular trajectory with a radius of 1.5 mm, with 40 μm error and a resolution of lower than 3 μm. The results of payload tests indicate that the stage has at least 20 kg out-of-plane payload capacity.
Prediction of vertical PM_(2.5) concentrations alongside an elevated expressway by using the neural network hybrid model and generalized additive model

A study on vertical variation of PM_(2.5) concentrations was carried out in this paper. Field measurements were conducted at eight different floor heights outside a building alongside a typical elevated expressway in downtown Shanghai, China. Results show that PM_(2.5) concentration decreases significantly with the increase of height from the 3rd to 7th floor or the 8th to 15th floor, and increases suddenly from the 7th to 8th floor which is the same height as the elevated expressway. A non-parametric test indicates that the data of PM_(2.5) concentration is statistically different under the 7th floor and above the 8th floor at the 5% significance level. To investigate the relationships between PM_(2.5) concentration and influencing factors, the Pearson correlation analysis was performed and the results indicate that both traffic and meteorological factors have crucial impacts on the variation of PM_(2.5) concentration, but there is a rather large variation in correlation coefficients under the 7th floor and above the 8th floor. Furthermore, the back propagation neural network based on principal component analysis (PCA-BPNN), as well as generalized additive model (GAM), was applied to predict the vertical PM_(2.5) concentration and examined with the field measurement dataset. Experimental results indicated that both models can obtain accurate predictions, while PCA-BPNN model provides more reliable and accurate predictions as it can reduce the complexity and eliminate data co-linearity. These findings reveal the vertical distribution of PM_(2.5) concentration and the potential of the proposed model to be applicable to predict the vertical trends of air pollution in similar situations.
Preparation and characterization of hydrothermally engineered TiO_2-fly ash composite membrane

This work targets the preparation and characterization of an inexpensive TiO_2-fly ash composite membrane for oily wastewater treatment. The composite membrane was fabricated by depositing a hydrophilic TiO_2 layer on a fly ash membrane via the hydrothermal method, and its structural, morphological and mechanical properties were evaluated. The separation potential of the composite membrane was evaluated for 100-200 mg·L~(-1) synthetic oily wastewater solutions. The results show that the composite membrane has excellent separation performance and can provide permeate stream with oil concentration of only 0.26-5.83 mg·L~(-1).Compared with the fly ash membrane in the average permeate flux and performance index (49.97 × 10~(-4) m~3 · m~(-2) · s~(-1) and 0.4620%, respectively), the composite membrane exhibits better performance (51.63 × 10~(-4) m~3·m~(-2).s~(-1) and 0.4974%). For the composite ash membrane, the response surface methodology based analysis inferred that the optimum process parameters to achieve maximum membrane flux and rejection are 207 kPa, 200 mg·L~(-1) and 0.1769 m·s~(-1) for applied pressure, feed concentration and cross flow velocity, respectively. Under these conditions, predicted responses are 41.33 × 10~(-4) m~3·m~(-2)·s~(-1) permeate flux and 98.7% rejection, which are in good agreement with the values obtained from experimental investigations (42.84 × 10~(-4) m~3·m~(-2)·s~(-1) and 98.82%). Therefore, we have demonstrated that the TiO_2-fly ash composite membrane as value added product is an efficient way to recycle fly ash and thus mitigate environmental hazards associated with the disposal of oily wastewaters.
Some q-inequalities for Hausdorff operators

We calculate the sharp bounds for some q-analysis variants of Hausdorff type inequalities of the form ∫_0~(+∞) (∫_0~(+∞) (φ(t))/t f(x/t) d_qt)~p d_qx ≤ c_φ∫_o~b f~p(t)d_qt. As applications, we obtain several sharp q-analysis inequalities of the classical positive integral operators, including the Hardy operator and its adjoint operator, the Hilbert operator, and the Hardy-Littlewood-Polya operator.
翼管神经切断术在变应性鼻炎治疗中的作用

变应性鼻炎(allergic rhinitis,AR)指南提出AR的治疗原则包括环境控制、药物治疗、免疫治疗和健康教育,概括为“防治结合,四位一体”。但临床实践发现,即使使用了规范的药物治疗和免疫治疗,也并非所有的AR患者都能获得理想的疗效,大约有20%的严重AR患者处于未控制状态。
游离股前外侧皮瓣修复头部高压电烧伤12例

术后观察皮瓣血运情况,切勿压迫供瓣区及蒂部。供瓣区采用烤灯保温,根据创面细菌培养和药物敏感试验结果选用敏感抗生素治疗7~10 d。每8小时肌内注射罂粟碱30 mg抗血管痉挛;静脉滴注低分子量右旋糖酐抗凝,每天1次,每次500 mL。围手术期若观察到皮瓣血运不佳,存在血管危象等并发症,及时对症处理或手术探查。术后2~3d拔除引流管,术后14 d拆线。
部分回收支架夹栓在急性脑梗死Solitaire支架取栓术中的初步应用

近年来应用支架型取栓装置治疗急性脑梗死的大型临床研究(ESCAPE、EXTEND-IA、SWIFTPRIME、MR CLEAN)取得重大进展,进一步证实了支架取栓的有效性。对于急性前循环梗死伴有近段大血管闭塞的患者,在静脉溶栓的基础上应用支架取栓装置进行血管内治疗已成为主流治疗方式,我国于2015年更新了急性脑梗死血管内治疗指南,并以最高等级推荐。然而,支架取栓无法避免术中栓子逃逸,常需多次反复取栓,增加了手术风险,延迟了再通时间。笔者在长期取栓实践基础上,探索出Solitaire支架取栓术中应用微导管及支架夹栓技术(thrombectomy with clamping embolus technique,TCET),在防止栓子逃逸,提高取栓效率的经验,报道如下。
内源性凋亡机制在肌源性干细胞移植保护受损大鼠脊髓中的作用

MDSCs移植至脊髓受损区域后,bax、CytC的基因表达被抑制,bcl-2的表达增强,导致Caspase-3被抑制,凋亡神经元减少。证实MDSCs移植后可通过抑制内源性凋亡程序而保护受损脊髓。
当归四逆汤对慢性盆腔炎模型大鼠的实验研究

目的观察当归四逆汤对慢性盆腔炎大鼠的影响,从血流动力学和免疫调节角度探讨其作用机理。方法采用苯酚胶浆法复制大鼠慢性盆腔炎模型,随机分为正常组,假手术组,模型组,当归四逆汤高、中、低剂量组。造模7d后,各治疗组灌胃给药14 d,观察血液流变学指标、子宫内膜病理形态学变化,免疫组化法检测大鼠子宫组织细胞间粘附分子-1 (ICAM-1)、纤维细胞生长因子-2 (FGF-2)水平。结果当归四逆汤能明显改善模型大鼠血液流变学指标和子宫内膜病理形态;与假手术组比较,模型组大鼠子宫组织ICAM-1、FGF-2表达显著升高(P<0.01);经当归四逆汤治疗后,大鼠子宫组织ICAM-1、FGF-2水平明显降低(P<0.05或P<0.01)。结论当归四逆汤有治疗慢性盆腔炎的作用,作用机理与改善慢性盆腔炎大鼠血流动力学状况,调节粘连相关免疫分子ICAM-1、FGF-2的表达有关。
高产玉米氮素高效利用

玉米是中国第一大作物,在保障国家粮食安全中占有重要地位。近年来,围绕玉米高产,国内学者在栽培理论、技术与应用方面取得一系列重要突破,在各地培创了一批玉米高产纪录,仅2006—2010年就有159个地块的玉米籽粒产量达到15 000 kg·hm~(-2)以上,这些高产田块出现显著提升了中国玉米的高产水平,并通过示范带动作用促进了不同生态区玉米生产水平的进一步提高,全国玉米平均单产从2006年的5 326.32 kg·hm~(-2)提高到2016年的5 972.70 kg·hm~(-2),增加了12.14%。但是,目前农户主要通过增加肥料尤其是氮肥投入来提高玉米籽粒产量,形成了靠化肥大量投入增产的农田高强度利用体系。 CHEN等总结了中国43个玉米高产纪录,产量平均为1.52× 10~3 kg·hm~(-2),氮肥施用高达747 kg.hm~(-2),氮肥利用率(NUE)只有21 kg·kg~(-2);当前中国玉米主产区的施肥问题较为突出,5个省的大样本农户调查数据表明玉米主产区的平均氮肥用量(包括有机肥)为257 kgN·hm~(-2),氮肥偏生产力仅为26 kg·kg~(-1),而优化条件下可达57 kg·kg~(-1),接近发达国家水平。在华北平原许多地区,农民在冬小麦和夏玉米作物每季的氮肥用量超过300kg·hm~(-2),远远超过达到最高产量时的优化施肥量。连续过量施氮使华北地区土壤矿质氮高量积累,氮肥利用率显著降低。高量化肥投入不仅未能带来进一步的产量增加,而且还威胁到生态环境安全,造成地表水或地下水体硝酸盐含量超标,并影响到农田的可持续利用。面对粮食需求不断增加、农田面积日益减少、作物集约化生产环境代价日益加剧的严峻局面,深入研究高产玉米氮素吸收利用规律、根系特性、碳氮代谢协调规律和氮肥优化施肥技术,有机统一高产与资源高效实现大面积高产高效成为中国玉米生产发展的唯一选择。
西藏自治区白内障现状分析及应对策略之我见

我国青藏高原平均海拔4 000 m以上,紫外线照射强度极强,空气中含氧量少,自然环境因素和落后的医疗条件,使西藏自治区白内障的发病率比我国其他地区高出约60%,成为我国白内障患病率和致盲率较高的地区之一。面对西藏自治区的白内障发病现状,作为西藏自治区的基层医务工作者,更深切了解问题之所在,也更清楚临床工作之重点,提出相关的应对策略,希望得到大家的关注。
镜像疗法改善脑卒中患者肢体功能的研究进展

脑卒中是脑局部血液循环障碍而导致的综合征,其发病率与致残率均较高,可导致患者的功能障碍、活动受限、社会参与受限制。脑卒中患者中,55%~75%存在日常生活活动能力部分或完全依赖。如何使丧失的上肢功能得到恢复,是脑卒中康复的重点。诸多研究表明,镜像疗法(mirror therapy,MT)是有效的治疗措施。MT所提供的良好功能动作、视觉刺激可以激活大脑前运动皮质区、主运动皮质区、辅助区、记忆区及体感觉皮质区,促使大脑发生可逆性改变和功能重组,改善患者的本体感知觉和功能动作。
早期等速肌力训练对不完全性脊髓损伤患者下肢肌力的影响

目的观察早期等速肌力训练对不完全性脊髓损伤(SCI)患者下肢肌力的作用。方法将符合入选条件的胸腰段不完全性SCI患者60例分为治疗组和对照组,每组患者30例。2组患者均采用包括运动疗法、物理因子治疗、矫形/支具和心理疏导治疗的综合康复治疗,治疗组在此基础上增加等速肌力训练。于治疗前和治疗4周后(治疗后)采用IsoMed 2000型等速肌力训练测试系统分别对2组患者双膝关节屈、伸肌群的峰力矩(PT)、力矩加速能(TAE)以及胴绳肌与股四头肌肌力比率(H/Q)进行评定,取平均值,并进行统计学分析。结果治疗后,2组患者屈、伸肌群的PT、TAE以及H/Q与组内治疗前比较,差异均有统计学意义(P<0.05);且治疗组患者治疗后屈、伸肌群的PT[分别为(38.58±17.34)N · m和(63.26± 16.91) N · m]、 TAE[分别为(6.33±2.35)J和(12.32±5.24) J]以及H/Q均显著优于对照组治疗后。结论早期等速肌力训练可显著改善不完全性SCI患者的下肢肌力。
Burden of chronic illness and associated disabilities in Bangladesh: Evidence from the Household Income and Expenditure Survey

Objective: The purpose of this study was to investigate the distribution of chronic illness and associated disability,out-of-pocket payment (OOPP), and other related factors using survey data from Bangladesh. Methods: This study analyzed Bangladesh Household Income and Expenditure Survey data that include socio-economic and demographic data, such as consumption, expenditures, and assets, along with information regarding chronic illness and disability. Multiple linear regression models were used to identify factors significantly associated with OOPP. Furthermore, a binary Logistic regression model was employed to assess the association of the explanatory variables with disability status. Results: A higher prevalence of chronic illness was found for those with chronic gastritis (18.70%), and 41.92% of the population had at least one side disability. The average OOPP healthcare expenditure for chronic illness was estimated to be US$7.59. Higher OOPP was found among the upper 2 wealth quintiles. Overall OOPP health expenditure was significantly higher among individuals with an associated disability (P < 0.001). The likelihood of having an associated disability was higher among those individuals with a lower education level (OR = 2.36,95% CI: 1.95-4.06),those who not earning an income (OR = 2.85,95% CI: 2.53-3.21), those who did not seek care (OR = 1.73,95% CI: 1.57-1.90),those who sought care from a pharmacy (OR = 8.91,95% CI: 7.38-10.74), and those in the lowest wealth quintile (OR = 7.21, 95% CI: 6.41-8.12). Conclusions: The high OOPP illustrates the necessity of financial risk protection for the population at low socio-economic status. Therefore,we recommend that the government strengthen the healthcare system with appropriate support directed to the rural and elderly populations.
Structural and electrochemical investigations of nanostructured NiTiO_3 in acidic environment

Electrochemically stable nanostructured nickel titanate (NiTiO_3) was prepared by sol-gel method and the structural and electrochemical properties were studied in the presence of H_2SO_4 + CH_3OH electrolyte. XRD and Raman studies confirmed the single phase of NiTiO_3 with the rhombohedral structure. Thermal stability was studied by TGA. Microstructure analysis by SEM confirmed the uniformly distributed spherical shaped NiTiO_3 particles, and TEM studies showed the spherical shaped particles with an average size of 90 nm. The UV-Vis analysis shows the absorption spectrum of NiTiO_3, while the FTIR spectrum showed the vibrations related to Ni-O and Ti-O stretching. Electrochemical tests were carried out by cyclic voltammetry (CV) and polarization studies. The CV measurements were made at room temperature as well as at 60℃: at room temperature, the NiTiO_3 did not show any activity towards methanol oxidation whereas there observed an activity at the potential of 0.69 V at the operating temperature of 60℃. The ilmenite structured NiTiO_3 has oxygen vacancies, most probably on the surface, which could have also contributed to the methanol oxidation. Thus the nanostructured NiTiO_3 is proposed to be an active support material for metal electrocatalysts.
A case study of gas drainage to low permeability coal seam

Gas drainage at low gas permeability coal seam is a main barrier affecting safety and efficient production in coal mines. Therefore, the research and application of drainage technology at low permeability coal seam is a key factor for gas control of coal mine. In order to improve the drainage effect, this paper establishes a three-dimensional solid-gas-liquid coupling numerical model, and the gas drainage amounts of different schemes are examined inside the overburden material around the goaf. The Yangquan mine area is selected for the case study, and the gas movement regularity and emission characteristics are analyzed in detail, as well as the stress and fissure variation regularity. Also examinations are the released gas movement, enrichment range and movement regularity during coal extraction. Moreover, the gas drainage technology and drainage parameters for the current coal seam are studied. After measuring the gas drainage flow in-situ, it is concluded that the technology can achieve notable drainage results, with gas drainage rate increase by 30%–40% in a low permeability coal seam.