mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Sulfur-doped 3D hierarchical porous carbon network toward excellent potassium-ion storage performance

Carbonaceous materials are promising anode candidates for potassium-ion batteries,but currently the unsatisfactory cycling and rate performances due to the sluggish diffusion kinetic and serious structure damage during K~+ insertion/extraction limit their practical application.Herein,a series of sulfur-doped porous carbons (SPCs) were prepared via a template-assisted freeze-drying followed by the carbonization and sulfuration processes at different temperatures.Among the three as-synthesized samples,SPC-600 exhibits the highest specific capacity (407 mAh·g~(-1) at 0.10 A·g~(-1)),the best rate (242 mAh·g~(-1) at 2.00 A·g~(-1)) and cycling performance (286 mAh·g~(-1) after 800 cycles at 0.50 A·g~(-1)).All the SPCs display higher capacities than the undoped carbon materials.The excellent electrochemical performance of SPC can be ascribed to the abundant three-dimensional porous structure together with S-doping in the disordered carbon,which is favor of providing adequate reaction active sites as well as fast ion/electron transport paths.The density functional theory (DFT) calculations further demonstrate that the sulfurdoping can promote K-ion adsorption and storage.Meanwhile,the kinetic analyses reveal that surface-induced capacitive mechanism dominates the K-ion storage process in SPCs,which contributes to ultrafast charge storage.This work provides an effective strategy for fabricating highperformance potassium-ion storage electrode materials.
Effect of electroacupuncture at different acupoints in treating rapid gastric emptying: Zusanli(ST36)plus Zhongwan(CV12)versus Zhongwan(CV12)alone

OBJECTIVE: To evaluate the effect of electroacupuncture on rapid gastric emptying by comparing the effectiveness of electroacupuncture at both Zusanli(ST36)and Zhongwan(CV12)(He-Mu acupoints)versus electroacupuncture at Zhongwan(CV12)alone.METHODS: Sixty-five patients were randomly divided into two groups;33 patients in the He-Mu acupoints group received electroacupuncture at both Zusanli(ST36)and Zhongwan(CV12),while 32 patients in the single acupoint group received electroacupuncture only at Zhongwan(CV12).Both groups were treated once daily for 30 min,five times per week for 3 weeks.Before and after the 3-week treatment course,patients underwent gastric emptying scintigraphy and were assessed using the Traditional Chinese Medicine(TCM)symptom scale of gastrointestinal diseases.The two groups were compared regarding the percentages of gastric retention at 30 and 60 min and the TCM symptom scores.RESULTS: After the treatment course,the percentages of gastric retention at 30 and 60 min were significantly improved in both groups compared with the pre-treatment values(P <0.01).The improvement in the gastric retention was significantly better in the He-Mu acupoints group than the single acupoint group at 30 min(P <0.01)and 60 min(P <0.05).The TCM symptom score was significantly decreased after the treatment course in both groups(P <0.01).The improvement in the TCM symptom score was significantly better in the He-Mu acupoints group than the single acupoint group(P <0.01).The total effective rate was 93.55%(29/31)in the He-Mu acupoints group and 77.42%(24/31)in the single acupoint group.The treatment effect was better in the He-Mu acupoints group than the single acupoint group(P <0.05).CONCLUSIONS: Electroacupuncture at both Zusanli(ST36)and Zhongwan(CV12)or at Zhongwan(CV12)alone is effective in treating rapid gastric emptying.Furthermore,electroacupuncture at both Zusanli(ST36)and Zhongwan(CV12)is more effective than electroacupuncture at Zhongwan(CV12)alone.
Ultrafast Nonlinear Optical Response of Two-dimensional MoS_2/Bi_2Te_3 Heterostructure

Controlled stacking of different two-dimensional (2D) atomic layers hold great promise for significantly optimizing the optical properties of 2D materials and broadening their applications. Here, vertical 2D MoS_2/Bi_2Te_3 heterostructures with high crystallinity and optical quality have been successfully constructed, through drop-casting 2D Bi_2Te_3 flakes on chemical vapor deposition (CVD)-grown MoS_2 flakes. Based on our homebuilt micro Z-scan and pump-probe measurement, we precisely investigated and compared the nonlinear optical (NLO) performance of an individual micro-sized MoS_2 flake before and after stacking 2D Bi_2Te_3 nanoplates. Moreover, layer-dependent ultrafast carrier dynamics of CVD-grown MoS_2 flakes were also explored. Owing to the efficient charge transfer from the monolayer (1 L) MoS_2 to 2D Bi_2Te_3, the 1L MoS_2/Bi_2Te_3 heterostructure demonstrated excellent NLO performance with superior nonlinear saturable absorption coefficient and ultrashort carrier lifetime. Our work greatly enriches our understanding of 2D heterostructure and paves the way for designing new type of tunable 2D photonics materials by combining the optical advantages of different 2D materials.
High energy product of isotropic bulk Sm-Co/α-Fe(Co) nanocomposite magnet with multiple hard phases and nanoscale grains

Nanocomposite magnets consisting of hard and soft magnetic phases have potential applications to be the next generation of permanent magnets with very high energy product and less expensive rare-earth elements. But it is still a big challenge to obtain bulk magnets with ideal microstructure and high performance. In this work, two - step warm processing at relative low temperatures had been adopted to obtain nearly theoretical density bulk nanocomposite magnets from amorphous/nanocrystalline powder precursors. Novel nanostructures consisting of multiple Sm-Co hard phases (SmCo_5 as main phase, SmCo_3, SmCo_7, Sm_2Co_(17) as minor phases) and 25 wt% α-Fe(Co) soft phase, nanoscale grain size below 20 nm for both the hard phase and soft phase, and the diffusion of Fe and Co compositions had been obtained in bulk isotropic magnets. Besides the ideal nanostructures, a high coercivity of 5.9 kOe, M r/M s value of 0.78 and a high square degree of demagnetization curve S = 0.47 were obtained. All of these factors together brought a new record-high energy product (BH)_(max) of 23.6 MGOe. These results make an important step toward fabricating novel nanostructure with high performance.
The electromagnetic response of composition-regulated honeycomb structural materials used for broadband microwave absorption

The undesirable absorption bandwidth is the main limitation for the application of microwave absorbing materials. Noting that the design of structure and composition of absorbing coating allows it to obtain a satisfying absorption bandwidth and to avoid weight increasing, honeycomb and its sandwich structures coated by various absorbant have been developed and measured using an arch measurement system over 2–18 GHz. To further understand the absorption mechanisms of honeycomb structural materials, simulation based on finite element method and transmission line theory is performed to analyze the different responses to the applied microwave between honeycomb structural materials and uniform-medium slab materials. The proper composition design allows control over the microwave loss mechanisms, which optimize the coating to possess both of the dielectric and magnetic advantages. For the honeycomb structural materials, the magnetic resonation is found for the first time, which is resulting from the periodic honeycomb walls on both sides of the dielectric cavity (consisting of the aramid paper interlayer and vacuum hexagonal prisms). In addition, the conversion of structure from solid to honeycomb brings about changes in impedance, propagating path, effective wavelength, effective attenuation area, microwave phases, and inductive coupling effect, etc., which result in a better microwave absorbing performance. The honeycomb sandwich structure coated by CIP/CB/EP with the weight ratio of 4:0.03:1 shows the absorption bandwidth of ~9.8 GHz for reflection loss (RL) lower than -10 dB which covers part of the S and C bands and almost the whole X and Ku bands.
Enhanced mechanical properties of 6082 aluminum alloy via SiC addition combined with squeeze casting

In order to improve mechanical properties of 6082 aluminum alloy, the SiC_p/Al 6082 composites were prepared by the addition of the micron-sized SiC_particles combined with the squeeze casting. The effects of the SiC_p content and squeeze casting on the microstructure and mechanical properties of the 6082 aluminum alloy were investigated by SEM, EDS, TEM, tensile testing and hardness testing analysis methods. Research results exhibited that the SiC_p content and squeeze casting had a significant impact on the microstructure and mechanical properties of the 6082 aluminum alloy. The addition of the SiC_p refined the grain size of the 6082 aluminum alloy while caused the increase of the porosity with increasing the SiC_p content, especially in the permanent mold casting condition. Compared to the permanent mold casting, the squeeze casting obviously reduced pore defects, refined grain size and made the SiC_p distribute evenly as well as bond tightly with the Al matrix. The tensile strength, yield strength, elongation, elastic modulus and hardness of the 6082 aluminum alloy obtained with the SiC_p and squeeze casting were remarkably improved, and the optimal mechanical properties were obtained with a 2 wt.% SiC_p, and they increased 10.73 %, 72.7 %, 193.9 %, 23.5 % and 25.2 %, respectively, compared to those of the 6082 aluminum alloy obtained without SiC_p and squeeze casting. The fracture surface of the SiC_p/Al 6082 composites obtained with the squeeze casting was dense and exhibited a ductile fracture mode.
Application of high-throughput first-principles calculations in ceramic innovation

Recent technical progress in the industry has led to an urgent requirement on new materials with enhanced multi-properties. To meet this multi-property requirement, the materials consisting of three and more elements have attracted increasing attention. However, facing to the nearly unknown huge multi-component materials system, the traditional trial and error method cannot provide sufficient data efficiently. Therefore, an efficient material innovation strategy is significant. The first-principles calculation based on the density functional theory is a powerful tool for both the accurate prediction of material properties and the identification of its underlying thermodynamics and dynamics. At the same time, the advances of computational methods and computer calculation abilities that are orders of magnitude faster than before make the high throughput first-principles calculations popular. At present, the simulation-assisted material design has become a main branch in the material research field and a great many successes have been made. In this article, the advances of the high throughput first-principles calculations are reviewed to show the achievements of the first-principles calculations and guide the future directions of its applications in ceramics.
The control of red water occurrence and opportunistic pathogens risks in drinking water distribution systems: A review

Many problems in drinkingwater distribution systems (DWDSs) are caused by microbe, such as biofilm formation, biocorrosion and opportunistic pathogens growth. More iron release from corrosion scales may induce red water. Biofilm played great roles on the corrosion. The iron-oxidizing bacteria (IOB) promoted corrosion. However, when iron-reducing bacteria (IRB) and nitrate-reducing bacteria (NRB) became themain bacteria in biofilm, they could induce iron redox cycling in corrosion process. This process enhanced the precipitation of iron oxides and formation of more Fe_3O_4 in corrosion scales, which inhibited corrosion effectively. Therefore, the IRB and NRB in the biofilm can reduce iron release and red water occurrence. Moreover, there are many opportunistic pathogens in biofilm of DWDSs. The opportunistic pathogens growth in DWDSs related to the bacterial community changes due to the effects of micropollutants. Micropollutants increased the number of bacteria with antibiotic resistance genes (ARGs). Furthermore, extracellular polymeric substances (EPS) production was increased by the antibiotic resistant bacteria, leading to greater bacterial aggregation and adsorption, increasing the chlorine-resistance capability, which was responsible for the enhancement of the particle-associated opportunistic pathogens in DWDSs. Moreover,O_3-biological activated carbon filtration-UV-Cl_2 treatment could be used to control the iron release, red water occurrence and opportunistic pathogens growth in DWDSs.
羊膜对预防宫腔再粘连作用机制的研究进展

宫腔粘连的规范治疗方法是宫腔粘连分离术,但术后会形成新的创面,渗出的炎性因子及粘连相关细胞因子作用于裸露的创面,进而形成新的瘢痕及粘连。所以术中保护残留子宫内膜,术后屏障创面、减少炎性因子及粘连相关因子的渗出、促进残留内膜再生修复,成为治疗的关键。因羊膜可做为屏障介质,并可分泌多种生物活性因子、抑制炎症反应、抗基质纤维化,且含有干细胞样细胞等作用,目前开始将羊膜用于预防术后宫腔再粘连。
基于数值模拟的管材三维自由弯曲成形规律研究

为研究外径19mm,壁厚为1mm的TP2铜管自由弯曲在不同工艺参数下的成形规律,探究最优工艺参数。从自由弯曲工艺基本原理展开分析,通过真实拉伸试验获取材料力学性能参数,用ABAQUS有限元软件对管材自由弯曲过程进行数值模拟,以壁厚减薄率和椭圆率作为评价指标,以功效系数法作为多目标优化方法,研究管模间隙C、弯曲模圆角半径R对管材弯曲成形的影响规律,获得了最优工艺参数。使用优化后的参数组合进行管材自由弯曲模拟。优化参数下的三维弯管壁厚减薄率为2.5%,椭圆率为5.68%。结果表明:工艺参数优化后的管材具有较好的自由成形质量。
迷走神经电刺激在记忆障碍疾病中的研究进展

记忆障碍可常见于脑卒中、脑外伤、帕金森病、阿尔兹海默症(Alzheimer's disease,AD)、血管性痴呆等多种疾病,目前仍缺乏易耐受且长期有效的治疗方法[1—2]。迷走神经电刺激(vagus nerve stimulation,VNS)是一种通过调节迷走神经网络从而靶向作用于多条神经可塑性通路、平衡自主神经功能的治疗技术,目前主要应用于难治性癫痫、难治性抑郁、偏头痛、丛集性头痛等疾病的治疗[3]。自1995年Clark等[4]首次证明VNS可改善大鼠的记忆再现起,过去的20余年间,VNS对记忆等认知功能的影响引起越来越多的学者关注[5—8]。
呼吸康复对方舱医院新型冠状病毒肺炎患者心理健康状况的影响

目的:观察呼吸康复对方舱医院新型冠状病毒肺炎患者心理健康状况的影响。方法:选取武汉方舱医院收治的新型冠状病毒肺炎160例患者为研究对象,住院期间给予呼吸康复干预,在入组当天和出院前分别给予医院焦虑抑郁量表(hospital anxeity and depression scale,HADS)评估患者焦虑抑郁情况。结果:干预后患者HADS、HADS-A和HADS-D评分分别为5.99±5.28、3.28±3.06和2.71±2.61分,低于干预前9.76± 7.43、5.11±3.72和4.64±4.13分(P<0.05),其中30岁及30岁以下患者三项评分虽有下降,但无显著性差异(P>0.05), 30岁以上患者三项评分差异具有显著性意义(P<0.01);干预后焦虑和抑郁的发生比例分别为7.50%和5.62%,低于干预前36.25%和30.00%,差异具有显著性意义(P<0.05),其中30岁及30岁以下患者焦虑抑郁比例虽有下降,但无显著性差异(P>0.05),30岁以上患者焦虑抑郁比例差异具有显著性意义(P<0.05)。结论:呼吸康复可以缓解方舱医院内新型冠状病毒肺炎患者焦虑抑郁情绪。
异基因造血干细胞移植后复发的免疫逃逸机制及治疗策略

异基因造血干细胞移植(allo-HSCT)是血液系统恶性疾病有效的治疗手段之一。感染和急性移植物抗宿主病(aGVHD)是allo-HSCT后早期死亡的主要原因,而在allo-HSCT 100 d后,白血病复发则是导致死亡的首要因素。移植后高复发率和不良预后在过去几十年中没有得到明显改善。尽管复发可能有许多因素在起作用,包括白血病细胞对预处理方案不敏感等,但在更多情况下是由于白血病细胞挣脱了供者T细胞的免疫监视,即发生了“免疫逃逸”。因此,深入了解移植后复发的免疫生物学机制是选择治疗策略的基础。
Strategic sill pillar design for reduced hanging wall overbreak in longhole mining

Steeply dipping, vein and tabular orebodies are traditionally extracted with longitudinal retreat mining methods such as Eureka and Avoca in a bottom-up sequence with delayed backfill.To increase productivity, sill pillars in the orebody are used to separate mining zones thus allowing production to take place simultaneously in two or more zones.While such mining methods are productive, they may be accompanied with high volumes of hanging wall overbreak causing significant unplanned ore dilution.In this work, it is shown through a mine design case study of a narrow vein deposit that a sill pillar could also play a significant role in limiting hanging wall overbreak.To demonstrate the role of sill pillar, a novel numerical modelling scheme is proposed to account for progressive stope wall overbreak.A numerical modelling approach of element death and rebirth is developed to allow for the detected stope overbreak to be immediately removed and replaced with backfill material before upper-level stope extraction.It is further shown that the average overbreak volume could be reduced by as much as 33% when the sill pillar is strategically placed in the lower half of a mine plan.
Mechanical behavior of coal under different mining rates:A case study from laboratory experiments to field testing

During deep mining, the excavation disturbance stress path is the domination factor for the stability of the surrounding rock mass as well as the ground pressure.One of the important parameters of the stress path is the loading or unloading rate of the disturbed rock or coal, which depended on the mining rate.To achieve a well understanding of the mining rate and its effect on the coal behavior, a preliminary case investigation of the mechanical properties of the coal at the various mining rates in both the laboratory scale and field scale was performed.Based on the uniaxial compression test and the digital image correlation(DIC)method, the mechanical behavior of the coal samples, such as the evolution of the strength, surface deformation, crack propagation, and elastic strain energy of the coal under the various loading rates were analyzed.A threshold range of the loading rate has been observed.The uniaxial compressive strength(UCS)and releasable elastic strain energy(U~e)increase with increasing loading rate when the loading rate is below the threshold.Otherwise, the UCS and Ue may decrease with the loading rate.Under the low loading rate(≤0.05 mm/min), the tensile deformation of the original defects could result in crack coalescence, whereas failure of the coal matrix is the key contributor to the crack coalescence under the high loading rate(greater than0.05 mm/min).Afterwards, with the consideration of the bearing capacity(UCS)and energy release of the mining-disturbed coal mass(U~e), a power exponential relationship between the mining rate(M_R)in the field and the critical loading rate(v_c)in the laboratory was proposed.The application potential of the formulas was then validated against the field monitored data.Finally, based on the critical loading rate, the released strain energy, and the monitored pressure on the roof supports, a reasonable mining rate M_R for the Ji_(15)-31030 working face was determined to be approximately 3 m/d.
Super-absorbent swellable polymer as grouting material for treatment of karst water inrush

Grouting is the most commonly used method to control water inrush in underground engineering.Traditional cement-based materials are easy to dilute and hard to coagulate under the influence of large flow and high-velocity water inrush.To address these deficiencies, a new type of polymer grouting material with an excellent expansion ratio was synthesised.The material quickly absorbs water and has an expansion ratio of 1:300.The material is composed of a superabsorbent polymer(SAP), glycerol, and ethanol.The effects of water quality on the expansion ratio and expansion rate of the material were examined, and the best solid-liquid ratio for the slurry was determined by fluidity measurements.A karst specially designed pipeline water inrush test device showed that 800 g of SAP can achieve 0.6 m/s water flow blockage in the smooth pipeline, demonstrating that the ability of the SAP slurry to block water inrush is superior to those of other materials.This study provides a reference for water inrush plugging, and has important implications for the reduction and control of karst pipeline-type water inrush disasters, ensuring the safety of construction sites and preventing loss of life and damage to property.
Microalgal-based feed: promising alternative feedstocks for livestock and poultry production

There is an immediate need to identify alternative sources of high-nutrient feedstocks for domestic livestock production and poultry, not only to support growing food demands but also to produce microalgae-source functional foods with multiple health benefits.Various species of microalgae and cyanobacteria are used to supplement existing feedstocks.In this review, microalgae have been defined as a potential feedstock for domestic animals due to their abundance of proteins, carbohydrates, lipids, minerals, vitamins, and other high-value products.Additionally, the positive physiological effects on products of animals fed with microalgal biomass have been compiled and recommendations are listed to enhance the assimilation of biomolecules in ruminant and nonruminant animals, which possess differing digestive systems.Furthermore, the role of microalgae as prebiotics is also discussed.With regards to large scale cultivation of microalgae for use as feed, many economic trade-offs must be considered such as the selection of strains with desired nutritional properties, cultivation systems, and steps for downstream processing.These factors are highlighted with further investigations needed to reduce the overall costs of cultivation.Finally, this review outlines the pros and cons of utilizing microalgae as a supplementary feedstock for poultry and cattle, existing cultivation strategies, and the economics of large-scale microalgal production.
The landscape of chromatin accessibility in skeletal muscle during embryonic development in pigs

Background: The development of skeletal muscle in pigs during the embryonic stage is precisely regulated by transcriptional mechanisms, which depend on chromatin accessibility.However, how chromatin accessibility plays a regulatory role during embryonic skeletal muscle development in pigs has not been reported.To gain insight into the landscape of chromatin accessibility and the associated genome-wide transcriptome during embryonic muscle development, we performed ATAC-seq and RNA-seq analyses of skeletal muscle from pig embryos at 45, 70 and 100 days post coitus(dpc).Results: In total, 21,638, 35,447 and 60,181 unique regions(or peaks) were found across the embryos at 45 dpc(LW45), 70 dpc(LW70) and 100 dpc(LW100), respectively.More than 91% of the peaks were annotated within - 1 kb to 100 bp of transcription start sites(TSSs).First, widespread increases in specific accessible chromatin regions(ACRs) from embryos at 45 to 100 dpc suggested that the regulatory mechanisms became increasingly complicated during embryonic development.Second, the findings from integrated ATAC-seq and RNA-seq analyses showed that not only the numbers but also the intensities of ACRs could control the expression of associated genes.Moreover, the motif screening of stage-specific ACRs revealed some transcription factors that regulate muscle development-related genes, such as MyoG, Mef2c, and Mef2d.Several potential transcriptional repressors, including E2F6, OTX2 and CTCF, were identified among the genes that exhibited different regulation trends between the ATAC-seq and RNA-seq data.Conclusions: This work indicates that chromatin accessibility plays an important regulatory role in the embryonic muscle development of pigs and regulates the temporal and spatial expression patterns of key genes in muscle development by influencing the binding of transcription factors.Our results contribute to a better understanding of the regulatory dynamics of genes involved in pig embryonic skeletal muscle development.