mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
一种基于改进正弦频率估计算法的功率测量

在电力系统中,对于含谐波的未知正弦信号功率测量通常需要准确估计其频率,提出了一种新的对未知正弦信号功率测量的方法及装置实现。首先,基于自适应内模控制器算法,采用实时误差信号的反正切函数代替原有的线性误差函数,得到改进的频率估计算法;然后,通过线性化平均化方法理论证明算法的稳定性和暂态性能;再由MATLAB进行仿真,比较改进算法与原算法的差异;最后,将以TI公司的TMS320F28335为硬件平台,设计程序算法,实现了对未知正弦电信号功率的测量装置。
我国变质岩石学、前寒武纪地质学和矿床地质学的一代宗师———程裕淇院士(二)

1939年1月,程裕淇接到一项任务,就是陪同出差到昆明的经济部地质调查所化验师王学海去考察昆明西南边昆阳县的“白土矿”。一行人于28日到达昆阳中谊村,测制1 ∶ 10000地形地质图。他们采集了大量样品并寄到重庆北碚经济部地质调查所由高级化验师黄汉秋化验检测,结果得知这些所谓的“白土”矿,P_2O_5含量都在百分之三十几以上,是高品位的磷灰石矿,而含这种矿的岩石则是“磷块岩”。
矿区地表水锰超标应急处置工程案例分析

2017年2月,广西省某矿山企业非法排放未经处理的废水,造成矿区下游一条小支流锰超标。在现场调查的基础上,制定并实施了应急处置方案,分别考察了石灰+聚氯化铝(PAC)、氢氧化钠+PAC等投药方式的处理效果。结果表明,在处置初期,通过向矿区排洪沟投加石灰和PAC,将pH调至8.5以上,对锰的处理效果明显,矿区下游河流可达到地表水环境质量标准;在处置后期,安装导流管后,矿区环境发生变化,通过投加氢氧化钠和PAC,将pH调至9.0以上,可以保证稳定的处理效果,矿区下游河流锰浓度实现稳定达标。
Validation of Global Evapotranspiration Product (MOD16) Using Flux Tower Data from Panjin Coastal Wetland, Northeast China

Recent advances in remote sensing technology and methods have resulted in the development of an evapotranspiration (ET) product from the Moderate Resolution Imaging Spectrometer (MOD16). The accuracy of this product however has not been tested for coastal wetland ecosystems. The objective of this study therefore is to validate the MOD16 ET product using data from one eddy covariance flux tower situated in the Panjin coastal wetland ecosystem within the Liaohe River Delta, Northeast China. Cumulative ET data over an eight-day period in 2005 from the flux tower was calculated to coincide with the MOD16 products across the same period. Results showed that data from the flux tower were inconsistent with that gained form the MOD16 ET. In general, results from Panjin showed that there was an underestimation of MOD16 ET in the spring and fall, with Biases of –2.27 and –3.53 mm/8d, respectively (–40.58% and –49.13% of the observed mean). Results for Bias during the summer had a range of 1.77 mm/8d (7.82% of the observed mean), indicating an overestimation of MOD16 ET. According to the RMSE, summer (6.14 mm/8d) achieved the lowest value, indicating low accuracy of the MOD16 ET product. However, RMSE (2.09 mm/8d) in spring was the same as that in the fall. Relationship between ET and its relevant meteorological parameters were analyzed. Results indicated a very good relationship between surface air temperature and ET. Meanwhile a significant relationship between wind speed and ET also existed. The inconsistent comparison of MOD16 and flux tower-based ET are mainly attributed to the parameterization of the Penman-Monteith model, flux tower measurement errors, and flux tower footprint vs. MODIS pixels.
儿童日间手术当日手术取消的原因分析及对策

目的探讨儿童日间手术当日手术取消的原因,提出相应对策,以降低此类手术取消率,提高医疗效率。方法通过查阅医院的数字化病案系统进行资料收集,对2014年3月至2016年12月的儿童日间手术当日取消手术进行原因分析。结果儿童日间手术当日手术取消率为6.13%;取消手术原因主要包括疾病因素512例(91.27%),医方因素36例(6.42%),患方因素10例(1.78%)。结论儿童日间手术当日手术取消原因多样,医院应改革日间手术运行模式,医务人员应加强自身业务能力,全面评估患儿基本情况,做好患儿及其家长的健康教育,尽量减少可控制因素对手术取消的影响,降低手术取消率。
绘图教学法在我校留学生人体解剖学教学中的应用

随着我国医学留学生数量的逐年增多,医学留学生教育也逐渐成为医学教育面临的问题,其中医学课程全英文教学是目前各大高校面临的主要挑战之一。人体解剖学特点是结构复杂、名词术语多.传统多媒体教学模式使用大量文字描述,使学生感到难记忆、易遗忘,加之教学双方用专业术语交流难度大,增加了留学生对人体解剖学知识理解和掌握的难度.图形也是一种形象语言,克服了以往教师与留学生之间的医学专业语言间的交流障碍,降低了教师讲授和留学生学习的难度,有助于学生对课程内容的理解掌握。目前绘图教学法在留学生人体解剖学教学中效果的研究尚未见报道。
精囊腺和射精管铸型标本的制作

近几年很多大型医院的泌尿外科开展了精囊镜技术来诊断和治疗血精,随着泌尿外科学的发展,需要更为详细的射精管和精囊腺的解剖学模型和数据,为泌尿外科手术的推广提供解剖学基础和理论依据。目前应用管道铸型技术已构建出全身多个器官的动脉、静脉血管网,如肝、脾、胰、脑、心、肺、上下肢关节血管网铸型标本等,但尚无射精管和精囊腺管道铸型标本的报道,仅在1978年,Aboul制作了精囊腺的铸型标本.笔者选用过氯乙烯和自凝牙托材料的混合填充剂,成功制作出了人正常离体精囊腺和射精管的铸型标本。现将具体方法介绍如下。
HPLC-CAD法测定不同产地柴胡药材中柴胡皂苷

目的建立HPLC-CAD法测定不同产地柴胡中柴胡皂苷a、柴胡皂苷b2、柴胡皂苷d的含有量。方法柴胡甲醇提取液的分析采用Waters C_(18)柱(4.6 mm×15 0 mm,5 μm);流动相乙腈-水,梯度洗脱;体积流量1.0 mL /min;柱温20 ℃;CAD检测器。结果3种柴胡皂苷分别在0.088 ~ 8.8 μg (r = 0.999 1) 、0.044 ~ 4.4 μg (r = 0.999 0) 、 0.088 ~ 8.8 μg (r = 0.998 5)范围内线性关系良好,平均加样回收率99.04% ~ 100.42% 。结论该方法操作简便,结果准确,重复性好,可用于柴胡药材的质量评价。
Exsolution Lamellae in Olivine Grains of Dunite Units from Different Types of Mafic-Ultramafic Complexes

Exsolution microstructures in olivine grains from dunite units in a few selected tectonic environments are reported here. They include lamellae of clinopyroxene and clinopyroxene-magnetite intergrowth in the Gaositai and Yellow Hill Alaskan-type complexes, clinopyroxene-magnetite intergrowth in the Kizildag ophiolite, and chromite lamellae in the Hongshishan mafic-ultramafic intrusive complex. These lamellae commonly occur as needle- or rod-like features and are oriented in olivine grains. The host olivine grains have Fo contents of 92.5-92.6 in the Gaositai complex, 86.5-90.1 in the Yellow Hill complex, 93.2-93.4 in the Kizildag ophiolite and 86.9-88.3 in the Hongshishan complex. Clinopyroxene in the rod-like intergrowth exsolved in olivine grains in the Gaositai and Yellow Hill is diopside with similar major element compositions of CaO (23.6-24.3wt%), SiO_2 (52.2-54.0wt%), Al_2O_3 (0.67-2.15wt%), Cr_2O_3 (0.10-0.42wt%) and Na_2O (0.14-0.26wt%). It falls into the compositional field of hydrothermal clinopyroxene and its origin is thus probably related to reaction between dunite and fluids. The enrichment of the fluids in Ca~(2+), Fe~(3+), Cr~(3+) and Na~+, resulted in elevated concentrations of these cations in olivine solid solutions via the reaction. With decreasing temperature, the olivine solid solutions altered to an intergrowth of magnetite and clinopyroxene. The Fe~(3+) and Cr~(3+) preferentially partitioned into magnetite, while Ca~(2+) and Na~+ entered clinopyroxene. Since the studied Alaskan-type complexes and ophiolite formed in a subduction environment, the fluids were probably released from the subducted slab. In contrast, the exsolved chromite in olivine grains from the Hongshishan complex that formed in post-orogenic extension setting can be related to olivine equilibrated with Cr-bearing liquid. Similarly, these lamellae have all been observed in serpentine surrounding olivine grains, indicating genetic relations with serpentinization.
北京市部分社区老年人身体素质与生命质量的关联

目的:分析老年人身体素质与生命质量之间的关联。方法:从北京市3个社区共获得105名60岁以上老年人的完整数据。个人基本情况采用自我设计问卷调查。握力、身体柔韧性和平衡能力参照国民体质监测操作手册要求进行测试,并按照标准百分计算各项身体素质得分,再相加后得到身体素质总分。生命质量的测量采用SF-36量表,测量内容分为生理内容综合测量(PCS)和心理内容综合测量(MCS)两类。采用典型相关分析和多元回归分析身体素质与生命质量之间的关联。结果:身体素质总分与生理内容综合测量、心理内容综合测量呈正向关联(标准化回归系数分别为0.350和和0.235)。各单项素质中,力量、平衡能力两项素质与生理内容综合测量呈正相关关系(标准化典型加权系数分别为0.777和0.630)。结论:老年人身体素质与生命质量呈正向关联,各单项身体素质中,力量和平衡能力分别与生理健康呈正向关联。
The analysis of composite laminated beams using a 2D interpolating meshless technique

Laminated composite materials are widely implemented in several engineering constructions. For its relative light weight, these materials are suitable for aerospace, military, marine, and automotive structural applications. To obtain safe and economical structures, the modelling analysis accuracy is highly relevant. Since meshless methods in the recent years achieved a remarkable progress in computational mechanics, the present work uses one of the most flexible and stable interpolation meshless technique available in the literature—the Radial Point Interpolation Method (RPIM). Here, a 2D approach is considered to numerically analyse composite laminated beams. Both the meshless formulation and the equilibrium equations ruling the studied physical phenomenon are presented with detail. Several benchmark beam examples are studied and the results are compared with exact solutions available in the literature and the results obtained from a commercial finite element software. The results show the efficiency and accuracy of the proposed numeric technique.
Relationships between Rapid Eye Movement Sleep Behavior Disorder and Neurodegenerative Diseases: Clinical Assessments,Biomarkers,and Treatment

Objective: Rapid eye movement sleep behavior disorder (RBD) is characterized by dream enactment and loss of muscle atonia during rapid eye movement sleep. RBD is closely related to α-synucleinopathies including Parkinson's disease, dementia with Lewy bodies, and multiple system atrophy. Many studies have investigated the markers of imaging and neurophysiological,genetic,cognitive,autonomic function of RBD and their predictive value for neurodegenerative diseases. This report reviewed the progress of these studies and discussed their limitations and future research directions. Data Sources: Using the combined keywords: “RBD”,“neurodegenerative disease”,“Parkinson disease”,and “magnetic resonance imaging”,the PubMed/MEDLINE literature search was conducted up to January 1,2018. Study Selection: A total of 150 published articles were initially identified citations. Of the 150 articles,92 articles were selected after further detailed review. This study referred to all the important English literature in full. Results: Single-nucleotide polymorphisms in SCARB2 (rs6812193) and MAPT (rs12185268) were significantly associated with RBD. The olfactory loss, autonomic dysfunction, marked electroencephalogram slowing during both wakefulness and rapid eye movement sleep, and cognitive impairments were potential predictive markers for RBD conversion to neurodegenerative diseases. Traditional structural imaging studies reported relatively inconsistent results,whereas reduced functional connectivity between the left putamen and substantia nigra and dopamine transporter uptake demonstrated by functional imaging techniques were relatively consistent findings. Conclusions: More longitudinal studies should be conducted to evaluate the predictive value of biomarkers of RBD. Moreover, because the glucose and dopamine metabolisms are not specific for assessing cognitive cognition, the molecular metabolism directly related to cognition should be investigated. There is a need for more treatment trials to determine the effectiveness of interventions of RBD on preventing the conversion to neurodegenerative diseases.
Zinc Porphyrin Sensitizers Containing Different Withdrawing and Donating Groups for Dye-sensitized Solar Cells: Design, Synthesis and Photovoltaic Properties

In this work, a series of unsymmetrical push-pull type zinc-porphyrins, in which meso-substituted porphyrin core bears an electron-donating group and an electron-withdrawing group in the trans positions, have been designed and synthesized to improve the light-harvesting in dye-sensitized solar cells (DSSCs). The electronic structures of these zinc-porphyrin dyes were firstly screened by using density functional theory (DFT) and time-dependent density functional theory (TDDFT) calculations. Among these zinc-porphyrin derivatives, zinc porphyrins bearing a phenyl, diphenyl-benzenamine or 3-nitro-benzoic acid substituent, denoted D1, D2 or D3, respectively, are found to exhibit superior HOMO and LUMO locations which are suitable for DSSCs systems. In particular, the η value of the DSSCs (D2) improved up to 2.3 times when compared with reference cell (D1) on account of the increase of J_(sc), FF and V_(oc). The enhancement of cell performance arises from the effective charge separation and decreases the aggregation of porphyrin dyes.
CAR-T细胞治疗复发难治性T3151突变的中枢急性B淋巴细胞白血病一例

患者于2016年8月7日行外周血淋巴细胞单采,并于体外分选、转染扩增.2016年9月4-6日行FC(氟达拉滨30mg/m2,第1 ~ 3天;环磷酰胺200 mg/m2,第1~3天)方案预处理3d后.2016年9月11-14日分次输注抗CD19的CAR-T细胞,共5× 10~8/kg.患者在给予FC方案处理后,回输CAR-T细胞后出现白细胞、血小板下降,在输注后第7天恢复正常.患者在输注CAR-T细胞后第3天出现间断性发热,38 ℃左右,第6天体温高达41 ℃,伴有畏寒、低血压,口服多乙酰氨基酚治疗无效,给予托珠单抗240 mg后症状改善,体温降至正常.CAR-T细胞在输注第10天左右达到峰值8.5×105,而后一直持续在6.0×10~2~4.0×10~4.CAR-T细胞输注后第4 ~ 8天,患者血清中IL-6水平明显升高;CAR-T细胞输注后第2~7天,IFN-γ水平明显升高;TNF-α和GM-CSF水平在CAR-T细胞输注后无明显波动.输注后第20天再次行腰椎穿刺+鞘内注射,脑脊液压力130 mmH_2O,脑脊液生化:红细胞2×10~6/L,白细胞2×l0~6/L,糖定量2.4 mmol/L,氯化物121mmol/L,蛋白定量369mg/L.脑脊液正常.该患者在输注后第28天骨髓穿刺细胞涂片显示原始、幼稚细胞占0.005,提示完全缓解.流式细胞术检测未见B-ALL细胞,CD34+细胞0.2%,MRD < 0.01 %; BCR-ABL P190定量0.在输注60 d后,患者体内仍能检出CAR-T细胞.随访至2017年12月,患者处于持续完全缓解状态,无头痛等中枢神经系统白血病症状.
Quantitative image analysis for evaluation of tumor response in clinical oncology

The objective, accurate, and standardized evaluation of tumor response to treatment is an indispensable procedure in clinical oncology. Compared to manual measurement, computer-assisted linear measurement can significantly improve the accuracy and reproducibility of tumor burden quantification. For irregular-shaped and infiltrating or diffuse tumors, which are difficult to quantify by linear measurement, computer-assisted volumetric measurement may provide a more objective and sensitive quantification to evaluate tumor response to treatment than linear measurement does. In the evaluation of tumor response to novel oncologic treatments such as targeted therapy, changes in overall tumor size do not necessarily reflect tumor response to therapy due to the presence of internal necrosis or hemorrhages. This leads to a new generation of imaging biomarkers to evaluate tumor response by using texture analysis methods, also called radiomics. Computer-assisted texture analysis technology offers a more comprehensive and in-depth imaging biomarker to evaluate tumor response. The application of computer-assisted quantitative imaging analysis techniques not only reduces the inaccuracy and improves the reliability in tumor burden quantification, but facilitates the development of more comprehensive and intelligent approaches to evaluate treatment response, and hence promotes precision imaging in the evaluation of tumor response in clinical oncology. This article summarizes the state-of-the-art technical developments and clinical applications of quantitative imaging analysis in evaluation of tumor response in clinical oncology.
Morphometric study confirms the presence of only Vatica mangachapoi on Hainan Island,China

To date only one species of the genus Vatica Linn.(Dipterocarpaceae) has been identified,and a subspecies and three varieties have been reported on Hainan Island,China.However,it remained controversial whether the species was Vatica mangachapoi or a new species Vatica hainanensis,and whether the subspecies or varieties are taxonomically valid.We evaluated here morphometric variations of 133 trees collected from nine populations and herbarium specimens of Vatica spp.using 16 traits of leaf and fruit.Among these,leaf traits varied more within and among populations than did fruit traits.Four traits of ratios were more stable than directly-measured traits within and among populations.The ranges of lamina length,lamina width and height of maximum lamina width point were the greatest among the 16 traits,while number of lateral veins varied least among the 12 directly-measured traits.Measurements from all 9 populations overlapped for each morphological trait,and variation of each trait was continuous among both individuals and populations.The range of variation did not distinguish any specimen from V.mangachapoi as described in the flora of Southeast Asia.By cluster analysis,individuals of each population as well as specimens of each variety formed no distinct clusters.The published varieties thus were characterized by no distinguishing variations in comparison with the nine sampled populations.In conclusion,the new species V.hainanensis as well as the subspecies and varieties were not supported by our comparisons,and only V.mangachapoi without any subspecies or varieties occurs on Hainan Island,China.
Effects of soil compaction on growth variables in Cappadocian maple (Acer cappadocicum) seedlings

This study investigates the effects of increasing soil penetration resistance (SPR) on seedling morphology and seedling architecture.When seedlings of deciduous Cappadocian maple (Acer cappadocicum Gled.) were grown in a greenhouse in a loamy soil under a wide range of soil compactions,all morphological variables studied changed significantly with increasing SPR.The relationships between increasing SPR and all morphological responses except lateral root length followed a negative quadratic curve.All biomass variables except lateral root biomass showed a bell-shaped response with respect to SPR,with a maximum biomass variable between 0.6 and 1.2 MPa,decreasing at higher soil compaction values.All allocation ratios were significantly affected by soil penetration resistance.Biomass allocation to roots was also affected by soil compaction.There was not a significant relationship between the specific stem length and increasing soil penetration resistance.The specific root length showed two trends to increasing SPR;it first decreased in response to the moderate compaction treatment (up to about 1.2 MPa),then increased significantly.We concluded that increasing soil compaction caused morphological changes to root and shoot sections of A.cappadocicum seedlings.
Synthesis of Cyclic Carbonate Catalyzed by DBU Derived Basic Ionic Liquids

In this work, 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU), 1,5-diazabicyclo[4.3.0]-5-nonene (DBN), and imidazole (MIM)-derived bromide ionic liquids (ILs) were synthesized and used to catalyze the cycloaddition reactions of carbon dioxide (CO_2) with several kinds of epoxides to form cyclic carbonates. The DBU derived bromide ionic liquid system was found to have the best catalytic activity among all the tested ILs. The influences of reaction conditions (including temperature, pressure and reaction time) on the reaction of C02 to propylene oxide (PO) were studied to show the best conditions of 120 °C, 1 MPa; 2.5 h catalyzed by 2 mol% DBU-derived bromide ionic liquid, with the conversion of PO and the selectivity of propylene carbonate (PC) reaching 99% and 99%, respectively. Under the optimum reaction conditions, the ionic liquid system could be reused at least five times without decrease in selectivity and conversion. NMR spectroscopy and DFT calculations were used to reveal the hydrogen-bond interaction between ionic liquids and reagent, based on which the reaction mechanism was proposed.
Factors influencing the adoption of physical soil and water conservation practices in the Ethiopian highlands

Soil and Water Conservation (SWC) structures have been constructed on cultivated land for nearly 40 years to reduce soil loss and improve crop yields and people's livelihoods in the Ethiopian highlands. However, the success of this huge effort has been mixed, and the main constraints have not been investigated in detail. This study was undertaken to identify the factors determining the adoption of SWC structures in the Ethiopian Highlands. Case study areas were selected from high-potential and low-potential areas. Data were collected from 269 farmers using face-to-face interviews, and through focus group discussions, key informant interviews and field observations. Binary logistic regression model and descriptive statistics were used to analyze the data. The result showed that the majority (87%) of the farmers interviewed were using SWC structures. Regionally, nearly all farmers in the low-potential areas and 56 %of farmers in the high-potential areas constructed and were maintaining the structures properly. This disparity is due to the fact that in the low-potential areas there have been strong governmental involvement and technical and financial support, and hence the farmers there have a better understanding of the multiple uses of physical SWC structures than do farmers in the high-potential areas. In addition, off-farm activities and free grazing plays a substantial role. We can conclude that clear understanding of the benefits of SWC structures by farmers, active involvement and technical support from the government, and genuine participation of farmers in SWC practices were found to be main factors in the adoption of SWC measures.
Testing optically stimulated luminescence dating on sand-sized quartz of deltaic deposits from the Sperchios delta plain, central Greece

This study reports on the first investigation into the potential of luminescence dating to establish a chronological framework for the depositional sequences of the Sperchios delta plain, central Greece. A series of three borehole cores (20 m deep) and two shallow cores (4 m deep), from across the delta plain, were extracted, and samples were collected for luminescence dating. The luminescence ages of sand-sized quartz grains were obtained from small aliquots of quartz, using the Single-Aliquot Regenerative-dose (SAR) protocol. The equivalent dose determination included a series of tests and the selection of the Minimum Age Model (MAM) as the most appropriate statistical model. This made it possible to confirm the applicability of quartz Optically Stimulated Luminescence (OSL) dating to establish absolute chronology for deltaic sediments from the Sperchios delta plain. Testing age results of the five cores showed that the deltaic sediments were deposited during the Holocene. A relatively rapid deposition is implied for the top ~14 m possibly as a result of the deceleration in the rate of the sea-level rise and the transition to terrestrial conditions, while on the deeper parts, the reduced sedimentation rate may indicate a lagoonal or coastal environment.
Climate change and Chinese farmers: Perceptions and determinants of adaptive strategies

Farmers’ perceptions, beliefs, adaptive strategies, and barriers regarding climate change are critical to promoting sustainable ecosystems and societal stability. This paper is based on an extensive survey of 1 500 farmers and their households in Henan Province in China during 2013–2014. Henan is the largest agricultural province in China with over 51 million farmers. The survey results showed that approximately 57 %of the respondents perceived the direct impact of climate change during the past 10 years, with 70.3 %believing that climate change posed a risk to their livelihood. Not surprisingly, most farmers reported that they have adopted new measures to mitigate the negative impacts of climate change. The main barriers hindering farmers’ adopting adaptation measures were lack of funds and timely information. A multinomial logit model revealed that land ownership, knowledge of crop variety and the causes of climate change, as well as the belief of climate change, were all positively related to the likelihood of employing adaptive strategies. Moreover, the percentage of households engaging in agriculture activity, and years of engaging in farming were both negatively correlated with famer’s likelihood of adopting adaptation strategies. More importantly, farmers with high incomes were less likely to adopt adaptive strategies and more willing to engage in other business activities. In conclusion, it is important to communicate climate change related information and government policies in rural areas, promote farmer associations and other educational outreach efforts to assist Chinese farmers to deal with climate change.
Estimating the average treatment effect of adopting stress tolerant variety on rice yield in China

Climate extremes, characterized by droughts and floods, have become one of the major constraints to sustainable improvement of rice productivity. Variety choice, considered as one of the main adaptation measures, could help farmers reduce yield loss resulting from these extremes. Based on a three-year panel survey of 1 080 Chinese rice farms in major rice producing provinces, we assume Hicksian neutral technology and employ an IV regression to estimate the average treatment effect (ATE) on rice yield for adopting stress tolerant variety, and find that farmers who adopted the stress tolerant variety on average increased rice yield by 15.5 %in comparison to the non-adopters.