mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Nonswellable hydrogels with robust micro/nano-structures and durable superoleophobic surfaces under seawater

Hydrogels, composed mainly of water trapped in three dimensional cross-linked polymer networks, have been widely utilized to construct underwater superoleophobic surfaces. However, the swelling nature and instability of hydrogels under complex marine environment will weaken their underwater superoleophobicity. Herein, we synthesize structured poly (2-hydroxyethylmethacrylate) (PHEMA) hydrogels by using sandpaper as templates. The robust non-swelling of PHEMA hydrogel ensures that micro/nano-structures on the surface of PHEMA hydrogels can be well maintained. Moreover, when roughness Ra of about 3~4 μm, the surface has superior oil-repellency. Additionally, even after immersing in seawater for one-month, their breaking strength and toughness can be well kept. The non-swellable hydrogels with long-term stable under seawater superoleophobicity will promote the development of robust superoleophobic materials in marine antifouling coatings, biomedical devices and oil/water separation.
Synthesis of Chiral Polyaniline Induced by Modified Hemoglobin

The synthesis of chiral polyaniline (PANI) induced by modified hemoglobin (Hb) was profoundly explored for the first time. Results revealed that after being separated, inactivated or immobilized, Hb can still induce the formation of chiral PANI successfully, suggesting that Hb can be used as the chiral inducers regardless of harsh reaction conditions. By examining the properties of PANI induced by modified Hb, it was found that Hb(inactivated)-PANI possessed excellent chirality, stability, and crystalline structure. The globin separated from Hb was demonstrated to have the ability of inducing the production of chiral PANI whereas the hematin from Hb had no capacity to direct enantio specificity for the PANI chains. Results indicated that Hb(immobilized)-PANI exhibited poor yield, doping state, and crystalline structure, indicating that the immobilization of Hb by entrapment was not beneficial to the polymerization reaction. Results also showed that the structure of Hb may have significant effects on the morphologies of chiral PANI.
Spatial patterns of farmland abandonment and its impact factors in the central Three Gorges Reservoir Area

The severe farmland abandonment phenomena in China have tremendously decreased the farmland usage efficiency and caused a series of profound ecological and social outcomes. The complexity of farmland abandonment necessitates a systematic research on its patterns and impact factors to underpin the dynamics of problem as well as potential solutions. This paper took Wanzhou district in the central part of Three Gorges Reservoir Area as an example to study the spatial distribution patterns of abandoned farmland at three scales, i.e., town, village, and plot, and analyzed the influence from labor transfer and farmland circulation. We conducted a survey on the distribution patterns of abandoned farmland via questionnaires at town and village scales, together with the modeling and interpretation of high-resolution aerial images taken by unmanned aerial vehicles at plot scale. Our research discloses a strong relationship between the distribution of abandoned farmland and the distance from population center at different scales. At either town or village scale, the abandonment proportion was recognized the highest in mid-distance areas and lowest in close-distance areas, and the per capita area of abandoned farmland increased with the distance to downtown or township. At plot scale, abandonment proportion presented exponential growth with the distance to village center, whereas the abandoned farmland was mainly distributed in the areas with distance above 500 m from the village center. Moreover, we noticed that labor transfer and farmland circulation are two important factors that influence farmland abandonment. Labor's outbound transfer distance has a positive linkage with the possibility of farmland abandonment. Finally, it is recommended that development and adoption of corresponding policies on local urbanization and farmland circulation will facilitate to alleviate farmland abandonment.
A 3-D DDA damage analysis of brick masonry buildings under the impact of boulders in mountainous areas

In mountainous areas, geological disasters carrying large boulders can cause severe damage to the widely used masonry buildings due to the high impact forces. To better understand the damage of brick masonry buildings under the impact of boulders, a “block-joint” model is developed using threedimensional discontinuous deformation analysis (3-D DDA) to simulate the behaviour of the “brick-mortar” structure. The “block-joint” model is used to capture not only the large displacement and deformation of individual bricks but also the large-scale sliding and opening along the mortar between the bricks. The linear elastic constitutive model is applied to account for the non-plastic deformation behaviour of brick materials. Furthermore, the mechanical characteristics of the mortar are represented using the Mohr-Coulomb and Drucker-Prager criteria. To propose safe structural design schemes and effective reinforcement for brick masonry buildings, seven construction techniques are considered, including different grades of brick and mortar, effective shear areas and reinforced members. The proposed 3-D DDA model is used to analyse the velocity distribution and the key point displacements of the brick masonry building under the impact of boulders. The results show that upgrading the brick and mortar, increasing the wall thickness, making full use of the wall thickness, and adding a circular beam and structural column are very effective approaches for improving the impact resistance of brick masonry buildings.
Evapotranspiration and humidity variations in response to land cover conversions in the Three Gorges Reservoir Region

A new land cover classification system was established for the Three Gorges Reservoir Region (TGRR) after considering the continuity of inundation and the natural characteristics of land cover. The potential evapotranspiration (PET) was predicted using a modified Penman-Monteith (P-M) model. The region's ratio of precipitation to evapotranspiration was calculated as the humidity index (HI). The data obtained was used to analyze climatic responses to land cover conversions from the perspectives of evapotranspiration and humidity variations. The results show that, from 1997 to 2009, the average annual PET increased in the early years and decreased later. In terms of overall spatial distribution, a significant reciprocal relationship appeared between annual PET and annual HI. In 1997, the annual PET was higher in the lower reaches than in the upper reaches of the TGRR, but the areas with high PET shifted substantially westward by 2003. The annual PET continued to increase in 2006, but the areas with high PET shrank by 2009. In contrast, the annual HI showed varying degrees of localized spatial variability. Over the three periods, the dominant forms of land cover conversions occurred from evergreen cover to seasonal green cover, from seasonal green cover to evergreen cover, and from seasonal green cover to seasonally inundated areas, respectively. These accounted for 48.0%, 38.4%, and 23.8% of the total areas of converted land covers in the three periods, respectively. During the period between 1997 and 2003, the main forms of land cover conversions resulted in both positive and negative growths in the average annual PET, while all of them pushed down the average annual HI. From 2003 to 2006, the reservoir region experienced neither a decrease in the annual PET nor an increase in the annual HI. The period between 2006 and 2009 saw a consistent downward trend in the annual PET and a consistent upward trend in the annual HI.
硫辛酸注射液致输注局部刺痛酸胀2例

硫辛酸注射液说明书中未提及静脉滴注本品可致局部刺痛、酸胀的不良反应,而上述2例患者在使用过程中均出现上述反应。分析原因,有文献认为与硫辛酸注射液给药速度过快和药物浓度过高有关。
妊娠期压力与子代发育

日常的不良生活事件、重大灾难事故以及不良的环境因素易诱发妊娠期压力。胎儿对不良的环境因素极为易感。妊娠期压力可通过胎盘介导、神经内分泌和表观遗传等多种机制影响子代发育。已有研究显示,妊娠期压力会影响出生结局、子代远期的神经行为发育和免疫系统发育。目前的产前检查主要评估孕妇的身体状况,但对孕妇的情绪心理状况缺乏关注。孕妇的妊娠期压力往往得不到重视,容易被漏诊或误诊,进而对今后儿童的健康和发育造成不良影响。美国和加拿大的儿科学会都提出,可考虑将孕妇情绪心理状况的评估纳入到常规产前检查中,以尽可能减少妊娠期压力的不良效应。本文重点阐释妊娠期压力的高危因素、对子代发育的不良影响及影响机制的最新研究进展。
抗接触蛋白相关蛋白2抗体相关脑炎伴有亮氨酸胶质瘤失活蛋白1抗体阳性一例

近些年,随着神经免疫学的不断发展,越来越多的自身免疫性脑炎相关抗体被发现.现已知抗接触蛋白相关蛋白2(contactin-associated protein 2,CASPR2)抗体分布于中枢神经系统和周围神经系统,出现在边缘叶脑炎和(或)莫旺综合征患者中,与此抗体相关的临床症状较多,且大多数症状有叠加.亮氨酸胶质瘤失活蛋白1(leucine-rich glioma inactivated 1,LGI1)抗体主要存在于边缘叶脑炎及少数莫旺综合征患者中,以癫痫及认知功能障碍为常见症状.我们报道1例罕见表现为莫旺综合征的CASPR2抗体相关脑炎伴有LGI1抗体阳性的患者,供临床参考.
Effect of Dy-substitution on structural and magnetic properties of MneZn ferrite nanoparticles

This paper describes the structural and magnetic properties of Dy-substituted MneZn ferrite nanoparticles. MneZneDy ferrite nanoparticles of the composition Mn_(0.5)Zn_(0.5)Dy_xFe_(2-x)O_4(x = 0.05, 0.1, 0.15 and 0.2) were synthesized by a facile chemical co-precipitation method. The samples were characterized through X-ray diffraction(XRD), transmission electron microscopy(TEM), Fourier transform infrared spectroscopy(FTIR), vibrating sample magnetometer(VSM) and Curie temperature. The XRD patterns confirm the synthesis of single crystalline phase of MneZneDy ferrite nanoparticles. Lattice parameter increases with increase in Dy-substitution which confirms the replacement of Fe~(3+) ions by Dy~(3+) ions. Crystallite size is of the order of 6-8 nm for all these samples. The particle sizes observed from TEM analysis are in good agreement with the XRD values. The magnetic measurements show superparamagnetic nature of the samples. The saturation magnetization decreases with increase in Dyconcentration and can be correlated to modifications in the A-B exchange interactions as a result of the structural modifications due to Dy-substitution. The Curie temperature for Mn_(0.5)Zn_(0.5)Fe_2O_4 nanoparticles is 124 ℃ and decreases up to 84 ℃ with the increase in the Dy-concentration. The decrease in Curie temperature can be attributed to the weakening of the superexchange interaction between A-site and B-site as a result of Dy-substitution. The low value of Curie temperature and higher value of thermomagnetic coefficient kT shown by these samples makes them suitable for the preparation of temperature sensitive ferrofluid for heat transfer applications.
Effect of BaF_2 addition on luminescence properties of Er~(3+)/Yb~(3+) co-doped phosphate glasses

Er~(3+)/Yb~(3+) co-doped phosphate glasses(P_2O_5-Al_2O_3-BaO-BaF_2-K_2O-Er_2O_3-Yb_2O_3) with varying BaF_2 content, were prepared by a conventional melt quenching technique and their spectroscopic properties were examined through the Raman, absorption, emission and decay measurements. Raman spectra(350-1400 cm-1) of the Er~(3+)/Yb~(3+) co-doped phosphate glasses with varying BaF_2 content, were recorded upon laser excitation at 785 nm. Near infrared luminescence spectra were measured in the 1400-1600 nm region under 970 nm diode laser excitation and characteristic band was observed at 1533 nm corresponding to ~4I_(13/2)/~4I_(15/2) transition of Er~(3+) ion. The decay curves for the ~4I_(13/2) level of Er~(3+) ion, were measured and the lifetime is found to decrease from 7.94 to 7.70 ms when BaF_2 content increases from 0 to 8 mol% and then increases up to 7.83 ms with further increase in BaF_2 content(12 mol %). The emission cross-section, lifetime and figure of merit for the ~4I_(13/2) / ~4I_(15/2) transition of Er~(3+) ion were evaluated and compared to the other host matrices. The upconversion luminescence was measured and intense red emission was observed for all the studied samples.
Synergistic responses of NHX, AKT1, and SOS1 in the control of Na~+ homeostasis in sweet sorghum mutants induced by ~(12)C~(6+)- ion irradiation

Sweet sorghum mutants induced by ~(12)C~(6+)-ion irradiation were planted under different soil salinity conditions to investigate the mechanisms maintaining the transport and spatial distribution of Na~+. The functions of the synergistic responses of NHX, AKT1, and SOS1 related to Na~+ accumulation were investigated in control (KFJT-CK) sorghum and KF1210-3 and KF1210-4 mutants. The results indicated that the NHX, AKT1, and SOS1 proteins in sweet sorghum are mainly involved in the transport, exclusion, and spatial distribution of Na~+, respectively. In addition to physiological parameters, we also measured the expression levels of NHX, AKT1, and SOS1 genes. The experimental results indicated that 150 mM NaCl induced marked increases in the transcripts of NHX and SOS1 after 8 and 12 h in the KF1210-3, KF1210-4, and KFJT-CK cultivars. In contrast, however, a decrease in AKT1 was observed. On the basis of our results, we propose a model in which cooperation among NHX, AKT1, and SOS1 facilitates Na~+ homeostasis in sweet sorghum in response to an increase in salt concentration. Accordingly, study of the regulatory mechanisms in sweet sorghum generated by carbon ion irradiation is essential for the selection of salt-tolerant cultivars.
达瓦依金提亚那丸提取工艺优化及其抗免疫性肝损伤作用

目的优化达瓦依金提亚那丸提取工艺,并评价其抗免疫性肝损伤作用.方法以乙醇体积分数、乙醇用量、提取时间为影响因素,胡椒碱、木香烃内酯、去氢木香烃内酯、龙胆苦苷含有量、出膏率的综合评分为评价指标,正交试验优化醇提工艺; 以煎煮次数、煎煮时间、加水量为影响因素,总多糖含有量、出膏率的综合评分为评价指标,正交试验优化水提工艺; 以β-环糊精与挥发油比例、包合时间、包合温度为影响因素,包合物得率、包合率的综合评分为评价指标,正交试验优化包合工艺.再评价丸剂对刀豆蛋白A (ConA)诱导免疫性肝损伤小鼠丙氨酸氨基转移酶(ALT) 、天门冬氨酸氨基转移酶(AST) 、超氧化物歧化酶(SOD),谷胱甘肽(GSH)的活性,以及丙二醛(MDA),一氧化氮(NO)含有量的影响.结果最佳醇提条件为8倍量80%乙醇提取2次,每次1 h; 最佳水提条件为14倍量水煎煮2次,每次1.5 h; 最佳包合条件为β-环糊精与挥发油比例1 ∶ 8,在40 ℃下包合2 h.与模型组比较,给药组小鼠血清中ALT、AST活性、肝内MDA、NO含有量明显降低(P< 0.05),肝组织匀浆SOD、GSH活性明显升高(P< 0.05),并呈良好的量效关系.结论该方法简便可靠,可用于提取达瓦依金提亚那丸,优化后其具有良好的抗免疫性肝损伤作用。
白屈菜多糖纯化工艺的优化

目的优化白屈菜多糖纯化工艺。方法以多糖保留率、脱色率、解吸率为评价指标,确定最佳大孔吸附树脂。再以多糖保留率和脱色率为评价指标,考察上样质量浓度、径高比、洗脱体积流量、上样量、洗脱剂用量对纯化工艺的影响。结果最佳条件为HPD-600树脂以径高比1 ∶ 8装柱,0.04 g /mL多糖溶液上样1 BV,静置吸附4 h,1.0 mL/min体积流量下用8 BV蒸馏水洗脱,多糖保留率84.63%,脱色率79.62%。结论该方法稳定可靠,可用于纯化白屈菜多糖。
循证医学I级证据支持透明晶状体摘除术治疗原发性闭角型青光眼

尽管是在全球最具影响力的THE LANCET发表的I级证据,EAGLE (effectiveness of early lens extraction for the treatment of primary angle-closure glaucoma)研究提供的结果仍在国内引起了较大的争议。
Algae functional group characteristics in reservoirs and lakes with different trophic levels in northwestern semi-humid and semi-arid regions in China

In order to study the differences in algae species and their biomass in water bodies in a region, three reservoirs and two lakes at the center of Guanzhong Plain were chosen to identify algae functional groups, measure biomass, and assess water quality, from January 2013 to December 2014. The water bodies represented different trophic levels: one oligotrophic, three mesotrophic, and one eutrophic. Based on the Reynolds' functional groups, they had 10 groups in common—B, P, D, X1, M, MP, F, S1, J, and G, but the algae biomasses and proportions were different. In the oligotrophic reservoir, functional group B reached a peak biomass of 576 × 10~4 L~(-1), which accounted for 31.27%. In the eutrophic lake, functional group D reached a peak biomass of 3227 × 10~4 L~(-1), which accounted for only 13.38%. When samples collected from other water bodies with similar trophic levels were compared, we found differences in the algae species functional groups. The potential reasons for the differences in algae functional group characteristics in the different water bodies in the region were water temperature and nutritional states.
Adsorption-oxidation of hydrogen sulfide on Fe/walnut-shell activated carbon surface modified by NH_3-plasma

Walnut-shell activated carbon (WSAC) supported ferric oxide was modified by non-thermal plasma (NTP), and the removal efficiency for hydrogen sulfide over Fe/WSAC modified by dielectric barrier discharge (DBD) was significantly promoted. The sample modified for 10 min and 6.8 kV output (30 V input voltage) maintained 100% H_2S conversion over a long reaction time of 390 min. The surface properties of adsorbents modified by NTP under different conditions were evaluated by the methods of X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET) analysis and in-situ Fourier transforminfrared spectroscopy (FTIR), to help understand the effect of the NTP treatment. NTP treatment enhanced the adsorption capacity of Fe/WSAC,which could due to the formation ofmicro-pores with sizes of 0.4, 0.5 and 0.75 nm. XPS revealed that chemisorbed oxygen changed into lattice oxygen after NTP treatment, and lattice oxygen is beneficial for H_2S oxidation. From the in-situ FTIR result, transformation of the reaction path on Fe/WSAC was observed after NTP modification. The research results indicate that NTP is an effectivemethod to improve the surface properties of the Fe/WSAC catalyst for H_2S adsorption-oxidation.
Spatial and historical distribution of organic phosphorus driven by environment conditions in lake sediments

The chemistry of sedimentary organic phosphorus (OP) and its fraction distribution in sediments are greatly influenced by environmental conditions such as terrestrial inputs and runoffs. The linkage of OP with environmental conditions was analyzed on the basis of OP spatial and historical distributions in lake sediments. The redundancy analysis and OP spatial distribution results suggested that both NaOH-OP (OP extracted by NaOH) and Re-OP (residual OP) in surface sediments from the selected 13 lakes reflected the gradient effects of environmental conditions and the autochthonous and/or allochthonous inputs driven by latitude zonality in China. The lake level and salinity of Lake Hulun and the runoff and precipitation of its drainage basin were reconstructed on the basis of the geochemistry index. This work showed that a gradient in weather conditions presented by the latitude zonality in China impacts the OP accumulation through multiple drivers and in many ways. The drivers are mainly precipitation and temperature, governing organic matter (OM) production, degradation rate and transportation in the watershed. Over a long temporal dimension (4000 years), the vertical distributions of Re-OP and NaOH-OP based on a dated sediment profile from HLH were largely regulated by the autochthonous and/or allochthonous inputs, which depended on the environmental and climate conditions and anthropogenic activities in the drainage basin. This work provides useful environmental geochemistry information to understand the inherent linkage of OP fractionation with environmental conditions and lake evolution.
Interaction of polyhydroxy fullerenes with ferrihydrite: adsorption and aggregation

The rapid development of nanoscience and nanotechnology, with thousands types of nanomaterials being produced, will lead to various environmental impacts. Thus, understanding the behaviors and fate of these nanomaterials is essential. This study focused on the interaction between polyhydroxy fullerenes (PHF) and ferrihydrite (Fh), a widespread iron (oxyhydr)oxide nanomineral and geosorbent.Our results showed that PHF were effectively adsorbed by Fh. The adsorption isotherm fitted the D-R model well, with an adsorption capacity of 67.1 mg/g. The adsorption mean free energy of 10.72 kJ/mol suggested that PHF were chemisorbed on Fh. An increase in the solution pH and a decrease of the Fh surface zeta potentialwere observed after the adsorption of PHF on Fh;moreover, increasing initial solution pH led to a reduction of adsorption. The Fourier transforminfrared spectra detected a red shift of C–O stretching from 1075 to 1062 cm~(-1) and a decrease of Fe–O bending, implying the interaction between PHF oxygenic functional groups and Fh surface hydroxyls. On the other hand, PHF affected the aggregation and reactivity of Fh by changing its surface physicochemical properties. Aggregation of PHF and Fh with individual particle sizes increasing from 2 nm to larger than 5 nm was measured by atomic force microscopy. The uniform distribution of C and Fe suggested that the aggregates of Fh were possibly bridged by PHF. Our results indicated that the interaction between PHF and Fh could evidently influence themigration of PHF, aswell as the aggregation and reactivity of Fh.
Application of Ag/AgBr/GdVO_4 composite photocatalyst in wastewater treatment

Ag/AgBr/GdVO_4 composite photocatalysts were designed and synthesized in this paper. The physical and chemical structures, as well as optical properties of the synthesized composite were investigated via XRD, XPS, TEM, and UV–vis. It is found that the composite showed a ternary heterojunction structure of Ag, AgBr and GdVO+4. Meanwhile, it has a high intensity of light current, indicating its high separation efficiency of electron and hole. Photocatalytic oxidation of rhodamine B (RhB) under visible light irradiation was performed to investigate the activity of the Ag/AgBr/GdVO_4 composite. Result indicates that it shows excellent photocatalytic activity. Under visible light irradiation for 12 min, about 80% of RhB (30 μmol/L) was degraded. The degradation rate is estimated to be 0.253 min~(-1), which is three times higher than that of pure AgBr. The high photoactivity can be ascribed to the synergetic effect of AgBr, GdVO_4, and Ag nanoparticle in separation of electron–hole pairs.
Characteristics and formation mechanism of regional haze episodes in the Pearl River Delta of China

To investigate the characteristics and the specific mechanism of continuous haze, comprehensive measurements were conducted from 15 October to 19 November in the Atmospheric Environment Monitoring Super-Station in Heshan of Guangdong province. Five haze episodes occurred in October and November 2014 in the Pearl River Delta (PRD) region. The meteorological parameters, gas data, chemical compositions, and optical parameters of the aerosols were obtained. Among these events, the second haze episode, with the highest concentration of PM_(2.5) of 187.51 μg/m~3, was the most severe. NO_3~- was always higher than SO_4~(2-), which indicated that motor vehicles played an important role in the haze, even though the oxidation rate from SO_2 to SO_4~(2-) was faster than that of NOX to NO_3~-. The difference between the hourly averages of Na~+ and K~+ during the haze episode and clean days was small, implying that straw combustion and sea salt had no significant effect on the occurrence of haze, and the backward trajectories of the air masses also conformed with this result. The air pollutants were difficult to disperse because of the significant decrease in the planetary boundary layer (PBL) height. Relative humidity played a crucial role in the formation of haze by leading to hygroscopic growth of the diameter of aerosols.
Interactions between engineered nanoparticles and dissolved organic matter: A review on mechanisms and environmental effects

Dissolved organic matter (DOM) is ubiquitous in the environment and has high reactivity. Once engineered nanoparticles (ENPs) are released into natural systems, interactions of DOM with ENPs may significantly affect the fate and transport of ENPs, as well as the bioavailability and toxicity of ENPs to organisms. However, because of the complexity of DOM and the shortage of useful characterization methods, large knowledge gaps exist in our understanding of the interactions between DOM and ENPs. In this article, we systematically reviewed the interactions between DOM and ENPs, discussed the effects of DOM on the environmental behavior of ENPs, and described the changes in bioavailability and toxicity of ENPs caused by DOM. Critical evaluations of published references suggest further need for assessing and predicting the influences of DOM on the transport, transformation, bioavailability, and toxicity of ENPs in the environment.