mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
High impact of vehicle and solvent emission on the ambient volatile organic compounds in a major city of northwest China

Monitoring of ambient volatile organic compounds (VOCs) was conducted within typical residentialcommercial area in the city of Xi'an in northwest China during typical ozone (O_3) episodes, to investigate the major contributors to the characteristic of ambient VOCs and their impact on O_3 production. In the residential-commercial area, diurnal variation of VOCs was highly impacted by vehicle exhaust, fuel evaporation, and local solvent use. Relative higher contributions (up to 60%) of VOCs from solvent use to the ozone formation potential were found. The present findings highlight the urgent need for restrictions on the emission of VOCs from solvent use and non-vehicle-traffic-related sources, such as oil storage.
A unique organic-inorganic hybrid Fe~(III) -Pr~(III) -included 2-germano-20-tungstate and its electrochemical biosensing properties

An organic-inorganic hybrid Fe~(III) -Pr~(III) -included 2-germano-20-tungstate [Pr(H_2 O)_8]_2 H_2 [Fe_4 (H_2 O)_4 (pca)_4 Ge_2 W_(20) O_(72)] · 34H_2 O (Hpca = 2-pyridinecarboxylic acid) (1) was hydrothermally prepared. Its polyoxoanion comprises one tetra-Fe~(III) incorporated [Fe_4 (H_2 O)_4 (pca)_4 Ge_2 W_(20) O_(72)] 8hybrid entity and two [Pr(H_2 O)_8]~(3 +) ornamental cations. The [Fe_4 (H_2 O)_4 (pca)_4 Ge_2 W_(20) O_(72)]~(8-)2-germano-20-tungstate entity can be regarded as an infrequent S -type [Ge_2 W_(20) O_(72)]~(16-)cluster pocketed by four [Fe(H_2 O)(pca)]~(2 +) cations. The S -type [Ge_2 W_(20) O_(72)] 16cluster could be imagined as condensation of two divacant Keggin [α -GeW_(10) O_(37)]_(10)segments by sharing two atoms. It is of interest is that carboxyl O and pyridine N atoms on pca ligands concurrently bind with Fe~(3 +) cations in a five-membered heterocyclic fashion to increase the stability of the whole structure. Furthermore, the electrochemical biosensing properties of 1 as the modified electrode material have been investigated for detecting norepinephrine (NPP), showing a low detection limit of 3.25 μmol/L. This work not only enriches structures of heterometallic germanotungstates (GTs), but also expands applications of polyoxometalates (POMs) in the electrochemical biosensing field.
Intrinsically zincophobic protective layer for dendrite-free zinc metal anode

Aqueous zinc anodes have attracted the attention of many researchers owing to their high safety, low cost, and high theoretical specific capacity. However, its practical application is severely limited by the dendrite growth on zinc anode. Herein, we develop an intrinsically zincophobic barium-titanate protective layer with a porous structure to suppress the zinc dendrite formation by homogenizing the ion distribution on the anode surface, increasing the nucleation sites, and limiting the irregular zinc growth. Based on these synergistic effects, the coated zinc anode can exhibit long cycle life (840 h at 0.5 mA/cm 2 for 0.5 mAh/cm 2) and low voltage hysteresis (36 mV). This work can provide a feasible direction for the design of intrinsically zincophobic coating materials to uniformize the zinc stripping and plating.
Self-sacrificial template synthesis of Fe, N co-doped porous carbon as efficient oxygen reduction electrocatalysts towards Zn-air battery application

Designing highly efficient non-precious based electrocatalysts for oxygen reduction reaction (ORR) is of significance for the rapid development of metal-air batteries. Herein, a hydrothermal-pyrolysis method is employed to fabricate Fe, N co-doped porous carbon materials as effective ORR electrocatalyst through adopting graphitic carbon nitride (g-C_3 N_4) as both the self-sacrificial templates and N sources. The g-C_3 N_4 provides a high concentration of unsaturated pyridine-type N to coordinate with iron to form Fe-N active sites. Through adjusting the Fe doping amounts, it is proved that appropriate Fe doping content is conducive to the construction of abundant defects and active sites of Fe-N. The as-prepared catalyst exhibits superior electrocatalytic ORR performance in alkaline media with half-wave potential (E_(1/2) = 0.82 V) and onset potential (E onset = 0.95 V), equivalent to the commercial Pt/C catalyst. Moreover, there is almost no activity loss after 10 k continuous cyclic voltammetry cycles and methanol tolerance, indicating the excellent durability and superior methanol tolerance. Remarkably, when assembled as the cathode in a Zn-air battery, the device displays a power density of 99 mW/cm~2, an open-circuit potential of 1.48 V and long-term discharge-charge cycling stability, indicating the promising potential to substitute the Pt catalyst for practical application.
A mini review: Constructing perovskite p-n homojunction solar cells

Organic metal halide perovskite materials have excellent photoelectric properties, and the power conversion efficiency (PCE) of the perovskite solar cells (PSCs) has increased from 3.8% to more than 25%. In the development of PSCs, innovative architectures were being proposed constantly. However, the use of the electron transport layer (ETL) and hole transport layer (HTL) increases manufacturing costs and process complexity. Perovskite material has ambipolar charge transport characteristics, so it could functionalize as both the optical absorption layer and carrier transport layer (CTL). In this review, we analyzed the p/n-type perovskite materials, perovskite p-n homojunction solar cells, and carrier transport layers-free (CTLs-free) devices. Finally, we propose some innovative device architectures. We hope that this mini review could pave way for the simplification of the architectures, promote the preparation of the low-cost and high-efficiency devices, and accelerate the commercialization of the PSCs.
Lifetime and Aging Degradation Prognostics for Lithium-ion Battery Packs Based on a Cell to Pack Method

Aging diagnosis of batteries is essential to ensure that the energy storage systems operate within a safe region. This paper proposes a novel cell to pack health and lifetime prognostics method based on the combination of transferred deep learning and Gaussian process regression. General health indicators are extracted from the partial discharge process. The sequential degradation model of the health indicator is developed based on a deep learning framework and is migrated for the battery pack degradation prediction. The future degraded capacities of both battery pack and each battery cell are probabilistically predicted to provide a comprehensive lifetime prognostic. Besides, only a few separate battery cells in the source domain and early data of battery packs in the target domain are needed for model construction. Experimental results show that the lifetime prediction errors are less than 25 cycles for the battery pack, even with only 50 cycles for model fine-tuning, which can save about 90% time for the aging experiment. Thus, it largely reduces the time and labor for battery pack investigation. The predicted capacity trends of the battery cells connected in the battery pack accurately reflect the actual degradation of each battery cell, which can reveal the weakest cell for maintenance in advance.
Biological Stability of Water-Based Cutting Fluids: Progress and Application

The application of cutting fluid in the field of engineering manufacturing has a history of hundreds of years, and it plays a vital role in the processing efficiency and surface quality of parts. Among them, water-based cutting fluid accounts for more than 90% of the consumption of cutting fluid. However, long-term recycling of water-based cutting fluid could easily cause deterioration, and the breeding of bacteria could cause the cutting fluid to fail, increase manufacturing costs, and even endanger the health of workers. Traditional bactericides could improve the biological stability of cutting fluids, but they are toxic to the environment and do not conform to the development trend of low-carbon manufacturing. Low-carbon manufacturing is inevitable and the direction of sustainable manufacturing. The use of nanomaterials, transition metal complexes, and physical sterilization methods on the bacterial cell membrane and genetic material could effectively solve this problem. In this article, the mechanism of action of additives and microbial metabolites was first analyzed. Then, the denaturation mechanism of traditional bactericides on the target protein and the effect of sterilization efficiency were summarized. Further, the mechanism of nanomaterials disrupting cell membrane potential was discussed. The effects of lipophilicity and the atomic number of transition metal complexes on cell membrane penetration were also summarized, and the effects of ultraviolet rays and ozone on the destruction of bacterial genetic material were reviewed. In other words, the bactericidal performance, hazard, degradability, and economics of various sterilization methods were comprehensively evaluated, and the potential development direction of improving the biological stability of cutting fluid was proposed.
Element-Arrangement Context Network for Facade Parsing

Facade parsing aims to decompose a building facade image into semantic regions of the facade objects. Considering each architectural element on a facade as a parameterized rectangle, we formulate the facade parsing task as object detection, allowing overlapping and nesting, which will support structural 3D modeling and editing for further applications. In contrast to general object detection, the spatial arrangement regularity and appearance similarity between the facade elements of the same category provide valuable context for accurate element localization. In this paper, we propose to exploit the spatial arrangement regularity and appearance similarity of facade elements in a detection framework. Our elementarrangement context network (EACNet) consists of two unidirectional attention branches, one to capture the column-context and the other to capture row-context to aggregate element-specific features from multiple instances on the facade. We conduct extensive experiments on four public datasets (ECP, CMP, Graz50, and eTRIMS). The proposed EACNet achieves the highest mIoU (82.1% on ECP, 77.35% on Graz50, and 82.3% on eTRIMS) compared with the state-of-the-art methods. Both the quantitative and qualitative evaluation results demonstrate the effectiveness of our dual unidirectional attention branches to parse facade elements.
Ultrathin PtRu Nanowires as Efficient and Stable Electrocatalyst for Liquid Fuel Oxidation Reactions

Direct liquid fuel cells (DLFCs) are promising clean energy conversion devices for their high energy density, low environmental pollution, and convenient transportation and storage. However, the commercialization of DLFCs is still limited by the lack of highly active and stable catalysts for the anodic oxidation of liquid fuels. Herein, a new class of ultrathin PtRu nanowires (NWs) with a diameter of 1.1nm was synthesized via a colloidal chemistry strategy. The as-made ultrathin PtRu NWs can not only expose large active sites but also enhance the kinetics of methanol oxidation reaction, which was confirmed by the in situ Fourier transform infrared (FTIR) spectroscopy. Consequently, ultrathin PtRu NWs exhibit greatly boosted activity and stability for methanol and ethanol oxidation reactions in an alkaline medium.
Dual-Driven Hemostats Featured with Puncturing Erythrocytes for Severe Bleeding in Complex Wounds

Achieving rapid hemostasis in complex and deep wounds with secluded hemorrhagic sites is still a challenge because of the difficulty in delivering hemostats to these sites. In this study, a Janus particle, SEC-Fe@CaT with dual-driven forces, bubbledriving, and magnetic field- (MF-) mediated driving, was prepared via in situ loading of Fe_3O_4 on a sunflower sporopollenin exine capsule (SEC), and followed by growth of flower-shaped CaCO_3 clusters. The bubble-driving forces enabled SECFe@CaT to self-diffuse in the blood to eliminate agglomeration, and the MF-mediated driving force facilitated the SECFe@CaT countercurrent against blood to access deep bleeding sites in the wounds. During the movement in blood flow, the meteor hammer-like SEC from SEC-Fe@CaT can puncture red blood cells (RBCs) to release procoagulants, thus promoting activation of platelet and rapid hemostasis. Animal tests suggested that SEC-Fe@CaT stopped bleeding in as short as 30 and 45 s in femoral artery and liver hemorrhage models, respectively. In contrast, the similar commercial product Celox™ required approximately 70 s to stop the bleeding in both bleeding modes. This study demonstrates a new hemostat platform for rapid hemostasis in deep and complex wounds. It was the first attempt integrating geometric structure of sunflower pollen with dual-driven movement in hemostasis.
Mild fabrication of SiC/C nanosheets with prolonged cycling stability as supercapacitor

A facile and mild route to synthesize C-coated SiC nanosheets (SiC/C NSs) via wet-chemical etching in hydrofluoric acid (HF) at 60 °C for 48 h using carbon aluminum silicate (Al_4 SiC_4) as raw materials is reported for the first time. HF molecule leads to the breaking of C-Al bonds in Al_4 SiC_4, which eventually results in the formation of two-dimensional SiC nanosheets. A carbon layer with a thickness of approximately 1.5 nm is formed on the surface of SiC nanosheets due to the excess carbon. The prepared SiC/C NSs possess a smooth and rectangular sheet with a mean 150 nm in width, 500 nm in length and 10 nm in thickness, respectively. The crystallographic characterization indicates that 3C-SiC and 2H-SiC coexist and the parallel plane relationship of 3C/2H-SiC heterojunction is (111) 3C-SiC//(001) 2H-SiC. Due to the formed 3C-SiC/2H-SiC heterojunction and graphitic carbon, the fabricated electrode based on SiC/C NSs exhibits prolonged cycling stability and high specific areal capacitance as a promising supercapacitor candidate. It remains 91.2% retention even after 20,0 0 0 cycles and 734 μ F/cm~2 at a scan rate of 10 mV/s.
Application of pulsed chemical vapor deposition on the SiO_2-coated TiO_2 production within a rotary reactor at room temperature

Pulsed chemical vapor deposition (P-CVD) is a promising technology for the surface modification of TiO_2 particles. For the scale-up application of P-CVD, a custom-designed rotary reactor and corresponding coating process at room temperature was developed in the present work. The obtained SiO_2-coated TiO_2 particles were characterized by various measures including high-resolution transmission electron microscope, Fourier transform infrared spectroscopy, X-ray diffraction, etc. The results illustrated that the SiO_2 films with a thickness of (3.7 ± 0.7) nm were successfully deposited onto the surface of TiO_2 particles. According to the dye degradation tests and acid solubility measurement, the deposited film can effectively inhibit the photocatalytic activity and enhance the weatherability of the TiO_2 particles. Zeta potential measurements showed that the SiO_2-coated TiO_2 is possible to be stably dispersed in the pH range of 6.9-11.6. The coating process made the whiteness of TiO_2 particles decreased slightly but still sufficient (97.3 ± 0.1) for application. Furthermore, the properties of the TiO_2 particles coated by PCVD were compared with the particles coated by traditional wet chemical deposition. It is shown that the P-CVD can produce thinner but denser films with better photoactivity suppression performance. The developed coating process within the rotary reactor was proved practically feasible and convenient for the scale-up production of SiO_2-coated TiO_2 via P-CVD.
Combination of graphene oxide and platelet-rich plasma improves tendon-bone healing in a rabbit model of supraspinatus tendon reconstruction

The treatment of rotator cuff tear is one of the major challenges for orthopedic surgeons. The key to treatment is the reconstruction of the tendon-bone interface (TBI). Autologous platelet-rich plasma (PRP) is used as a therapeutic agent to accelerate the healing of tendons, as it contains a variety of growth factors and is easy to prepare. Graphene oxide (GO) is known to improve the physical properties of biomaterials and promote tissue repair. In this study, PRP gels containing various concentrations of GO were prepared to promote TBI healing and supraspinatus tendon reconstruction in a rabbit model. The incorporation of GO improved the ultrastructure and mechanical properties of the PRP gels. The gels containing 0.5 mg/ml GO (0.5 GO/PRP) continuously released transforming growth factor-β1 (TGF-β1) and platelet-derived growth factor (PDGF)-AB, and the released TGF-β1 and PDGF-AB were still at high concentrations, ~1063.451 pg/ml and ~814.217 pg/ml, respectively, on the 14th day. In vitro assays showed that the 0.5 GO/PRP gels had good biocompatibility and promoted bone marrow mesenchymal stem cells proliferation and osteogenic and chondrogenic differentiation. After 12 weeks of implantation, the magnetic resonance imaging, microcomputed tomography and histological results indicated that the newly regenerated tendons in the 0.5 GO/PRP group had a similar structure to natural tendons. Moreover, the biomechanical results showed that the newly formed tendons in the 0.5 GO/PRP group had better biomechanical properties compared to those in the other groups, and had more stable TBI tissue. Therefore, the combination of PRP and GO has the potential to be a powerful advancement in the treatment of rotator cuff injuries.
Double-edged effects caused by magnesium ions and alkaline environment regulate bioactivities of magnesium-incorporated silicocarnotite in vitro

Magnesium (Mg) is an important element for its enhanced osteogenic and angiogenic properties in vitro and in vivo, however, the inherent alkalinity is the adverse factor that needs further attention. In order to study the role of alkalinity in regulating osteogenesis and angiogenesis in vitro, magnesium-silicocarnotite [Mg-Ca_5(PO_4)_2SiO_4, Mg-CPS] was designed and fabricated. In this study, Mg-CPS showed better osteogenic and angiogenic properties than CPS within 10 wt.% magnesium oxide (MgO), since the adversity of alkaline condition was covered by the benefits of improved Mg ion concentrations through activating Smad2/3-Runx2 signaling pathway in MC3T3-E1 cells and PI3K-AKT signaling pathway in human umbilical vein endothelial cells in vitro. Besides, provided that MgO was incorporated with 15wt.% in CPS, the bioactivities had declined due to the environment consisting of higher-concentrated Mg ions, stronger alkalinity and lower Ca/P/Si ions caused. According to the results, it indicated that bioactivities of Mg-CPS in vitro were regulated by the double-edged effects, which were the consequence of Mg ions and alkaline environment combined. Therefore, if MgO is properly incorporated in CPS, the improved bioactivities could cover alkaline adversity, making Mg-CPS bioceramics promising in orthopedic clinical application for its enhancement of osteogenesis and angiogenesis in vitro.
A facile,versatile hydrogel bioink for 3D bioprinting benefits long-term subaqueous fidelity,cell viability and proliferation

Both of the long-term fidelity and cell viability of three-dimensional (3D)-bioprinted constructs are essential to precise soft tissue repair.However,the shrinking/swelling behavior of hydrogels brings about inadequate long-term fidelity of constructs,and bioinks containing excessive polymer are detrimental to cell viability.Here,we obtained a facile hydrogel by introducing 1% aldehyde hyaluronic acid (AHA) and 0.375% N-carboxymethyl chitosan (CMC),two polysaccharides with strong water absorption and water retention capacity,into classic gelatin (GEL,5%)-alginate (ALG,1%) ink.This GEL-ALG/CMC/AHA bioink possesses weak temperature dependence due to the Schiff base linkage of CMC/AHA and electrostatic interaction of CMC/ALG.We fabricated integrated constructs through traditional printing at room temperature and in vivo simulation printing at 37℃.The printed cell-laden constructs can maintain subaqueous fidelity for 30 days after being reinforced by 3% calcium chloride for only 20 s.Flow cytometry results showed that the cell viability was 91.38±1.55% on day 29,and the cells in the proliferation plateau at this time still maintained their dynamic renewal with a DNA replication rate of 6.0661.24%.This work provides a convenient and practical bioink option for 3D bioprinting in precise soft tissue repair.
The study of dry biological valve crosslinked with a combination of carbodiimide and polyphenol

The glutaraldehyde crosslinked pericardium has been used in bioprosthetic valves for about 50 years.However,problems such as glutaraldehyde residue and calcification still exist in current commercial products.Non-glutaraldehyde crosslinked dry valve is an important strategy to solve those problems.In this study,a non-glutaraldehyde crosslinked dry biological valve material was obtained by the combined crosslinking of carbodiimide (EDC) and polyphenol.The results showed that the comprehensive properties of EDC and curcumin crosslinked pericardium were superior to glutaraldehyde crosslinked pericardium,including unfolding property,anti-calcification,cytotoxicity,anticoagulant properties,mechanical properties,enzyme degradation resistance and thermal shrinkage temperature.EDC and curcumin crosslinked dry pericardium could flatten after being folded at 40℃ for 3 days while glutaraldehyde crosslinked pericardium could not.The calcification of pericardium treated with EDC and curcumin was 1.2160.36 mg/g in rats after 60 days' subdermal implantation,much lower than that of glutaraldehyde treated control group (22.0663.17 mg/g).
内镜辅助下经颈-气管入路修补胸段气管后壁损伤1例

本例病例通过内镜辅助经颈-气管切口入路进行气管腔内缝合,修复胸段气管后壁裂伤,不仅避免了气管前壁纵行切开,还获得了更好的操作空间及视野。该技术也给我们带来一定的思考:在熟练的腔镜缝合技术和内镜辅助下,能否通过颈-气管切口入路修补气管远端甚至近端主支气管的后壁裂伤,避免开胸手术。
我国草种业的成就、挑战与展望

本研究从种质资源收集、品种选育、种子生产和质量管理等方面总结了我国草种业发展取得的成就,分析了面临的挑战,提出了建设草种强国的建议。我国已初步建立了完整的草种业体系,已成为世界草种质资源保存大国,自1987年实施品种审定制度以来,已审定通过了651个草类植物新品种,在利用乡土植物优异基因和内生真菌创制新种质等方面,取得了突出成果。所育成品种基本可满足一般生产需求。种子田常年保有面积10万hm~2左右,年产种子约10万t。已在全国建立了5个部级检验中心,并在品种审定、特异性、一致性和稳定性(DUS)测试,种子立法等方面建成了较为完整的质量管理体系。面临的挑战是种质资源收集不及我国现有饲草种质资源数的50%,对已有种质资源评价、鉴定工作不足,缺少用于生态修复的草种和草坪草品种。根据国家生态修复规划,每年需草种7万t,目前缺口巨大,每年进口草种5万t左右,主要是高质量商品草和草坪草用种。质量管理体系中缺少种子认证。建议进一步加强种质资源收集、评价与利用;加强乡土草、草坪草及放牧型牧草选育;建立大规模草种生产基地及成果转化渠道;完善种子质量管理体系及提高对草的认识,从科技创新、人才培养、发展政策等方面予以支持。
盆底超声检查中国专家共识(2022版)

随着盆底外科手术及康复治疗技术的快速发展,盆底超声检查技术已被中华医学会妇产科学分会妇科盆底学组指南列为评价盆底功能障碍性疾病的辅助检查方法之一,和MRI检查一样有助于临床诊断和治疗方案的选择。但目前我国尚缺乏完善、规范的培训和操作指导意见,为此,中华医学会超声医学分会妇产学组组织国内知名专家,在借鉴国内外相关指南、共识及中国专家临床经验的基础上制定本专家共识,以规范盆底超声在我国女性盆底功能障碍性疾病评估中的应用。
先进感知与智能损伤评估的机遇与挑战

结构损伤评估(structural damage assessment, SDA)是利用现场传感系统和相关分析技术来监测结构的行为和性能,以识别和评估结构完整性、安全性和耐久性的技术,其主要包括"传感"、"数据"和"决策"等关键问题。当前,随着智能材料与结构、微/ 纳米机电系统、人工智能、大数据、边缘计算、物联网等技术的飞速发展,结构损伤评估技术也步入了一个全新的发展阶段,面临了前所未有的发展机遇与挑战。发展先进感知与智能损伤评估技术对航空航天装备、海洋工程装备、交通运输装备、土木建筑工程等领域工程结构完整性与系统安全性保障具有重要意义。