mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Role of robotic-assisted pancreatic surgery: lessons learned from our initial experience

BACKGROUND: Minimally invasive surgery has achieved worldwide acceptance in various fields,however,pancreatic surgery remains one of the most challenging abdominal procedures. In fact,the indication for robotic surgery in pancreatic disease has been controversial. The present study aimed to assess the safety and feasibility of robotic pancreatic resection. METHODS: We retrospectively reviewed our experience of robotic pancreatic resection done in Sanchinarro University Hospital. Clinicopathologic characteristics,and perioperative and postoperative outcomes were recorded and analyzed. RESULTS: From October 2010 to April 2016,50 patients underwent robotic-assisted surgery for different pancreatic pathologies. All procedures were performed using the da Vinci robotic system. Of the 50 patients,26 were male and 24 female. The average age of all patients was 62 years. Operative time was 370 minutes. Among the procedures performed were 16 pancreaticoduodenectomies (PD),23 distal pancreatectomies (DP),11 tumor enucleations (TE). The mean hospital stay was 17.6 days in PD group,9.0 days in DP group and 8.4 days in TE group. Pancreatic fistula occurred in 10 cases (20%),2 after PD,3 after DP,and 5 after TE. Four patients had postoperative transfusion in PD group and one in DP group. Conversion to open laparotomy occurred in four patients (8%). No serious intraoperative complications were observed. CONCLUSIONS: From our early experience,robotic pancreatic surgery is a safe and feasible procedure. Further experience and follow-up are required to confirm the role of robotic approach in pancreatic surgery.
A Piezoelectric Friction-Inertial Linear Motor Based on Piezoelectric Single-Crystal Cymbal Displacement Amplification Mechanism

Piezoelectric friction-inertial motor is known for its promise for a long-range and high-resolution motion. The movement of the slider/rotor of the motor is achieved by stick-slip effect.We report a relaxor-based-ferroelectric-single-crystal cymbal actuator and a miniature piezoelectric friction-inertial linear motor(abbreviated as PFILM)fabricated with the cymbal actuator.The cymbal actuator is fabricated with a 10mm diameter disk of $0.70{\rm{Pb}}\left( {{\rm{M}}{{\rm{g}}_{1/3}}{\rm{N}}{{\rm{b}}_{2/3}}} \right){{\rm{O}}_3} - 0.30{\rm{PbTi}}{{\rm{O}}_3}$ single crystal.The displacement of the cymbal actuator increases almost proportionally from 0 to 23μm with driving voltage up to 500V,and the minimal hysteresis is observed.The cymbal-PFILM with 20mm motion range works under driving voltage frequency of ca.100Hz to ca.5kHz,the fastest speed is obtained with 3.5kHz and the no-load speed is 14mm/s and the maximum thrust force is 98mN.Compared with a PFILM based on multilayer piezoelectric ceramic,the proposed motor has a larger stroke under DC/ quasistatic input voltage in fine motion mode,but a smaller driving force in long-travel mode due to lower resonance frequency.
Power Supply of Macro-Micro Driven Linear Piezoelectric Motor

To investigate a novel macro and micro driven linear piezoelectric motor composed of an ultrasonic motor with macro movement and a piezoelectric actuator with micro movement,a digital signal processing(DSP)based macro and micro power supply is designed,which fits the new linear piezoelectric motor.The power supply comprises a control circuit,a voltage conversion circuit,an amplifier circuit,a half-bridge module,an optical isolatorsdrive circuit,etc,where the DSP of TMS320F28335is used as the controller.When the linear piezoelectric motor working in a macro driven state,the power supply outputs alternating currents with high frequency and high voltage,which drives the linear piezoelectric motor dynamically at an ultrasonic frequency;while working in the micro driven state,the power supply outputs direct currents with high voltage,which drives the linear piezoelectric motor in micro driven statically.Here a prototype of the macro-micro power supply is designed.After a series of experiments on the power supply with and without loads,the results show that the power supply can drive and control the macro micro driven linear piezoelectric motor,and realizes quick and seamless switch between macro and micro drive.In addition,the power supply can drive and control the ultrasonic motor or piezoelectric ceramic micro actuator individually.The power supply achieves the multiple parameters of output signals adjustable simultaneously and exhibits good control characteristics.
Turned off Characteristics of Linear Ultrasonic Motor

The high controllability and high resolution control of linear ultrasonic motors depend on effective control of driving signals.For a good control characteristic,step control which the driver output turned off and on was used.Therefore,a novel dual PWM topology structure ultrasonic motor driver was designed and analyzed.According to the characteristics of the circuits,two kinds of hardware turned off methods named methods A and B were discussed.The differences of the voltage applied on motor by different methods were figured out.Finally,a series of experiments were carried out in the clean room to study the influence of step characteristic by different turn off methods.The experimental results show that the steplength was 230nm by method A and 125nm by method B,while cycles of driving signals were 6.The method B has a smaller steplength when cycles are 6.The average steplength varies in non-linear while driving cycles changing.The steplength varies approximately in linear while voltage amplitude changing.Therefore,method B is better to implement step control,because it gets a better control in positioning system.
德州地区汉族人群27个Y-STR基因座多态性分析

人类Y染色体的遗传方式不同于常染色体,其 DNA在父亲遗传给儿子的过程中不发生重组,为单倍型遗传(父系遗传)。DE KNIJFF等认为Y染色体短串联重复序列(Y-STR)具有丰富的单倍型信息以及高度的多态性和父系遗传等特点,因此,在法医学检验实践中具有重要的应用价值,特别是在父系血缘关系鉴定和性侵案件的混合斑男性成分识别中被广泛使用。
基于湿邪致痰瘀互结探讨冠心病的防治思路

目前冠心病辨证多从痰浊、瘀血、气滞等论治,但对湿邪在冠心病发病中的作用尚未引起足够重视。论述湿邪导致痰瘀互结的机理转归,从病理形成的过程看,湿邪是源头,痰浊是过渡,痰瘀是结局。探讨水湿痰饮可进一步化瘀,痰湿瘀血互结,痹阻心脉,是导致冠心病发病的机理。并详述中医药从湿论治冠心病的临床实践,为冠心病的防治研究开拓思路。
尖孢镰刀菌与极细链格孢复合侵染引起甘薯茎枯病

甘薯茎枯病,又名甘薯蔓割病,主要由尖孢镰刀菌Fusarium oxysporum引起(Logeshwarn et al.,2011),近年来有向长江中下游蔓延的趋势。2015年,甘薯茎枯病在青岛市发病严重,发病率高达60%~ 70%,本课题组从青岛市即墨市采集的发病样本中得到了尖孢镰刀菌和极细链格孢Alternaria tenuissima两种病原菌。为探明这2种病原菌在致病性方面的关系,通过甘薯茎部接种致病性试验,明确青岛市甘薯茎枯病的致病菌种类以及不同致病菌间的复合侵染,以期为全面合理有效地防治甘薯茎枯病及指导田间生产提供参考依据。
实时荧光定量环介导等温扩增方法检测马铃薯黑胫病菌

由马铃薯黑胫果胶杆菌Pectobacterium atrosepticum引起的生产上日趋严重的马铃薯黑胫病,其初侵染来源是带菌种薯(Mattinen et al.,2008),种薯带菌数量直接决定田间病害发生的严重程度。因此,播种前明确种薯中马铃薯黑胫果胶杆菌的含量至关重要。目前国内外应用实时荧光定量PCR方法对病原菌进行定量检测已有很多(娄兵海等,2014),但还未见利用实时荧光定量环介导等温扩增(real- time fluorescence quantitative LAMP,RTFQLAMP)方法定量检测马铃薯黑胫病菌的报道。本试验通过建立RTFQ-LAMP方法,检测马铃薯块茎中的马铃薯黑胫果胶杆菌,以期实现马铃薯黑胫病的早期诊断,减少病害的发生。
纳米传感器

纳米传感器是利用纳米尺度的材料将待测物的物理、化学或生物信息转换成可测量的光电等信号的装置和器件, 是人类窥探微观世界的"放大镜". 它的诞生,加快了人类社会迈向信息化、智能化传感器时代的步伐.与传统传感器相比, 纳米传感器集高灵敏、多功能、高智能等优异性能于一身, 可在分子水平上进行操作和控制, 为人们灵敏地探测和感知纳米尺度上的微观世界提供了重要的多样化手段. 同时, 纳米传感器具有集成、阵列、微型、智能和便携等优点, 极大地拓宽了传感器在医疗诊断、环境监测、可穿戴设备等领域的应用. 目前, 纳米传感器的发展依然面临诸多挑战, 例如:纳米界面反应快、响应低, 需发展高时空分辨和高灵敏的传感技术和仪器, 以实现对纳米尺度上反应的追踪和对新型传感元件作用机制的理解.
后来居上的降脂药阿托伐他汀

体内低密度脂蛋白(LDL)胆固醇水平提高,引起动脉硬化和冠心病。人体中胆固醇三分之二是体内合成的,由乙酰辅酶A经大约30步生化反应合成。其中的限速反应是羟基甲基戊二酸(HMG)在HMGCoA还原酶催化下,生成二羟基甲基戊酸,抑制后者的生成,切断了胆固醇的生物合成链(Tavormina PA, Gibbs MH, Huff JW. The utilization of β-hydroxy-β- methyl-δ-valerolactone in cholesterol biosynthesis. J Am Chem Soc, 1956, 78: 4498-4499)。
炎症性肠病242例临床分析

回顾性分析2005至2015年于大连医科大学附属第二医院确诊为炎症性肠病(IBD)的住院患者资料,发现近5年我院IBD住院患者呈增加趋势,以溃疡性结肠炎居多。IBD确诊时间长,病情易反复,对病情进行综合分析及减少复发是提高诊治效果的关键。
Evaluating high temperature elastic modulus of ceramic coatings by relative method

The accurate evaluation of the elastic modulus of ceramic coatings at high temperature (HT) is of high significance for industrial application, yet it is not easy to get the practical modulus at HT due to the difficulty of the deformation measurement and coating separation from the composite samples. This work presented a simple approach in which relative method was used twice to solve this problem indirectly. Given a single-face or double-face coated beam sample, the relative method was firstly used to determine the real mid-span deflection of the three-point bending piece at HT, and secondly to derive the analytical relation among the HT moduli of the coating, the coated and uncoated samples. Thus the HT modulus of the coatings on beam samples is determined uniquely via the measured HT moduli of the samples with and without coatings. For a ring sample (from tube with outer-side, inner-side, and double-side coating), the relative method was used firstly to determine the real compression deformation of a split ring sample at HT, secondly to derive the relationship among the slope of load-deformation curve of the coated ring, the HT modulus of the coating and substrate. Thus, the HT modulus of ceramic coatings can be evaluated by the substrate modulus and the load-deformation data of coated rings. Mathematic expressions of those calculations were derived for the beam and ring samples. CVD-SiC coatings on graphite substrate were selected as the testing samples, of which the measured modulus ranging from room temperature to 2100 ℃ demonstrated the validity and convenience of the relative method.
A Novel Peak-to-Average Power Ratio Reduction Scheme via Tone Reservation in OFDM Systems

In this paper, a novel signal-to-clipping noise ratio and least squares approximation tone reservation scheme (SCR-LSA TR) is proposed to reduce the peak-to-average power ratio for orthogonal frequency division multiplexing systems. During the SCR procedure, only the element with the maximal amplitude is picked for processing, which not only decreases the algorithm complexity, but also helps to overcome the BER deterioration. With the LSA method, the amplitude of the peak-cancelling signals can approximate to that of the original clipping noise as much as possible. Through the combination of the optimization factor in the LSA method, the classic SCR method can achieve better PAPR reduction with faster convergence. Simulation results show that the proposed SCR-LSA TR scheme has less in-band distortion and smaller out-of-band spectral radiation. The BER of the proposed scheme shows a better performance especially under the 16-QAM over the additive white Gaussian noise channel.
An Efficient Machine Learning Approach for Indoor Localization

Indoor localization has gained much attention over several decades due to enormous applications. However, the accuracy of indoor localization is hard to improve because the signal propagation has small scale effects which leads to inaccurate measurements. In this paper, we propose an efficient learning approach that combines grid search based kernel support vector machine and principle component analysis. The proposed approach applies principle component analysis to reduce high dimensional measurements. Then we design a grid search algorithm to optimize the parameters of kernel support vector machine in order to improve the localization accuracy. Experimental results indicate that the proposed approach reduces the localization error and improves the computational efficiency comparing with K-nearest neighbor, Back Propagation Neural Network and Support Vector Machine based methods.
3D Audio Coding Approach Based on Spatial Perception Features

A new three-dimensional (3D) audio coding approach is presented to improve the spatial perceptual quality of 3D audio. Different from other audio coding approaches, the distance side information is also quantified, and the non-uniform perceptual quantization is proposed based on the spatial perception features of the human auditory system, which is named as concentric spheres spatial quantization (CSSQ) method. Comparison results were presented, which showed that a better distance perceptual quality of 3D audio can be enhanced by 5.7%~8.8% through extracting and coding the distance side information comparing with the directional audio coding, and the bit rate of our coding method is decreased of 8.07% comparing with the spatial squeeze surround audio coding.
Vortex-Induced Vibration of a Tension Leg Platform Tendon: Multi-Mode Limit Cycle Oscillations

This paper studies the application of mathematical models to analyze the vortex-induced vibrations of the tendons of a given TLP along the Indian coastline, by using an analytical approach, using MATLAB. The tendon is subjected to a steady current load, which causes vortex-shedding downstream, leading to cross-flow vibrations. The magnitude of the excitation (lift and drag coefficients) depends on the vortex-shedding frequency. The resulting vibration is studied for possible resonant behavior. The excitation force is quantified empirically, the added mass by potential flow hydrodynamics, and the vibration by normal mode summation method. Non-linear viscous damping of the water is considered. The non-linear oscillations are studied by the phase-plane method, investigating the limit-cycle oscillations. The stable/unstable regions of the dynamic behavior are demarcated. The modal contribution to the total deflection is studied to establish the possibility of resonance of one of the wet modes with the vortex-shedding frequency.
青年反复卒中合并Castleman病一例

Castleman病是一种罕见的慢性淋巴组织增生性疾病,目前多认为是一种非特异性炎性反应,与病毒感染和自身免疫调节障碍有关,可伴发多系统症状。临床上颈动脉夹层导致青年反复卒中合并Castleman病的病例在同内外尚无文献报道。我们报道1例本院收治患者的资料,并结合文献探讨Castleman病在卒中发生中的作用,供临床参考。
Sweet potato and potato residual flours as potential nutritional and healthy food material

In this study, the proximate composition, mineral content and amino acid composition of starch processing residues from 10 cultivars of sweet potato and 10 cultivars of potato were determined, and the nutritional and health-related values of these residues were investigated. The residual flours contained 20.63–31.48 g and 17.14–28.57 g rich dietary fiber per 100 g dry weight for sweet potato and potato, respectively, as well as mineral elements, including potassium, ferrum, zinc and copper. The highest limiting amino acid score (AAS) of the almost balanced amino acid composition were observed to be 71.07 and 57.96 for sweet potato and potato residues, respectively. A grey relational analysis showed that the nutritional values of Jishu 4 at 0.7519 and LT-5 at 0.7281 were the highest among the sweet potato and potato residues, respectively. The evaluation of the sweet potato/potato residues, the by-products of the starch industry, based on recommended daily intake (RDI) standards, indicated that the residues have potential nutritional and health-related food values.
Responses of N_2O reductase gene (nosZ)-denitrifier communities to long-term fertilization follow a depth pattern in calcareous purplish paddy soil

The effect of long-term fertilization on soil denitrifying communities was analysed by measuring the abundance and diversity of the nitrous oxide (N_2O) reductase gene, nosZ. Soil samples were collected from plots of a long-term fertilization experiment established in 1982 in Suining City, China. The fertilizer treatments were no fertilizer (CK), three chemical fertilizer (CF) treatments (N, NP, NPK), manure (M) alone, and manure with chemical fertilizers (NM, NPM, NPKM). The abundance and diversity of the denitrifying bacteria were assessed by real-time quantitative PCR, terminal restriction fragment length polymorphism (T-RFLP), and cloning and sequencing of nosZ genes. The diversity and abundance of nosZ-denitrifiers was higher in soil amended with manure and chemical fertilizers (CFM) than in soil amended with CF alone, and the highest in topsoil (0–20 cm). The nosZ-denitrifier community composition was more complex in CFM soil than in CF soil. Specific species were detected only in the CFM soil. The abundance of nosZ-denitrifier in the NPKM treatment was approximately two times higher than that in the CK, N, and NPK treatments. Most of the cloned nosZ sequences were closely related to nosZ sequences from Bradyrhizobiaceae and Rhodospirillaceae in Alphaproteobacteria. Of the measured abiotic factors, soil organic matter correlated significantly with the abundance (P<0.01); available phosphorus correlated significantly with the topsoil community composition (P<0.01), whereas soil organic matter correlated significantly with the subsoil (20–90 cm) community composition (P<0.01). This study demonstrated that long-term CFM fertilization affected both the abundance and composition of the nosZ-denitrifier community.
Soil mineral nitrogen and yield-scaled soil N_2O emissions lowered by reducing nitrogen application and intercropping with soybean for sweet maize production in southern China

The increasing demand for fresh sweet maize (Zea mays L. saccharata) in southern China has prioritized the need to find solutions to the environmental pollution caused by its continuous production and high inputs of chemical nitrogen fertilizers. A promising method for improving crop production and environmental conditions is to intercrop sweet maize with legumes. Here, a three-year field experiment was conducted to assess the influence of four different cropping systems (sole sweet maize (SS), sole soybean (SB), two rows sweet maize-three rows soybean (S2B3) intercropping, and two rows sweet maize-four rows soybean (S2B4) intercropping), together with two rates of N fertilizer application (300 and 360 kg N ha~(–1)) on grain yield, residual soil mineral N, and soil N_2O emissions in southern China. Results showed that in most case, intercropping achieved yield advantages (total land equivalent ratio (TLER=0.87–1.25) was above one). Moreover, intercropping resulted in 39.8% less soil mineral N than SS at the time of crop harvest, averaged over six seasons (spring and autumn in each of the three years of the field experiment). Generally, intercropping and reduced-N application (300 kg N ha~(–1)) produced lower cumulative soil N_2O and yield-scaled soil N_2O emissions than SS and conventional-N application (360 kg N ha~(–1)), respectively. S2B4 intercropping with reduced-N rate (300 kg N ha~(–1)) showed the lowest cumulative soil N_2O (mean value=0.61 kg ha–1) and yield-scaled soil N_2O (mean value=0.04 kg t–1) emissions. Overall, intercropping with reduced-N rate maintained sweet maize production, while also reducing environmental impacts. The system of S2B4 intercropping with reduced-N rate may be the most sustainable and environmentally friendly cropping system.
Identification of quantitative trait loci and candidate genes associated with ABA sensitivity in common wild rice (Oryza rufipogon Griff.)

Abscisic acid (ABA), as one of the foremost signaling molecules in plants, is an important hormone which plays versatile functions in regulating developmental process and adaptive stress process. A set of introgression lines were previously generated via a backcrossing program using an elite indica cultivar rice Teqing (O. sativa L.) as recipient and an accession of Yuanjiang common wild rice (O. rufipogon Griff.) as donor. In this study, the previously developed introgression lines were evaluated for ABA sensitivity. Here we reported that a total of 14 quantitative trait loci (QTLs) associated with ABA sensitivity were identified. An ABA sensitive introgression line, YIL53, was identified and characterized. Physiological characterization, including chlorophyll content, malondialdehyde content, soluble sugar content, and stomata movement, demonstrated that YIL53 exhibited the characteristics associated with ABA sensitivity. Genotypic analysis revealed that YIL53 harbored one QTL related to ABA sensitivity, qASS1-2, which was located on chromosome 1 within one introgressed segment derived from the Yuanjiang common wild rice. Furthermore, the qASS1-2 was finally narrowed down to a 441-kb region between simple sequence repeats (SSR) marker RM212 and single nucleotide polymorphism (SNP) marker M3 using the segregation population derived from the cross between Teqing and YIL53, and three candidate genes associated with ABA sensitivity were identified using a strategy combined gene expression analysis with QTL mapping. Identification of the QTLs related to ABA sensitivity and characterization of the ABA sensitive line YIL53 would provide a helpful basis for isolating novel genes related to ABA sensitivity.
Intercontinental comparison of liana community assemblages in tropical forests of Ghana and Malaysia

Aims Liana research has increased in the past two decades, yet there is still inadequate comparison of liana communities at a cross-continental scale. We compared liana assemblages in tropical forest ecosystems of Ghana and Malaysia, thereby determining patterns and mechanisms that are common or unique to the regions. Methods Liana diversity, community structure and taxonomic composition were determined in 60 plots of 40 × 40 m~2 in three forest types (primary, disturbed secondary, selectively logged) in each biogeographic area. Two traits, climbing mechanisms and dispersal modes were determined for all species and individuals via direct field observation and with published literature. Data were analyzed at biogeographic (using combined forest data) and forest-type levels. Important Findings Both observed and rarefied–extrapolated species richness of lianas were significantly higher in Ghanaian forests compared to Malaysian forests. In most cases, species diversity indices (Shannon diversity index, Margalef, Fisher's alpha) showed significantly higher liana diversity at Ghanaian forests at biogeographic and forest-type levels. Similarly, Ghanaian forests harbored significantly higher values of liana abundance and basal area than Malaysian forests at both biogeographic and forest-type levels. The taxonomic composition of lianas differed considerably between the two biogeographic areas at all levels, although similarity in composition increased at generic and family levels. Though above-ground biomass of lianas was similar between the two biogeographic regions, variations occurred at forest-type level between the two regions. The two biogeographic areas showed some similarities in assemblages of liana climbing mechanisms. Although more species of lianas were adapted for animal dispersal than other dispersal modes in both countries, the majority of liana individuals in Ghana were wind dispersed whereas the majority of liana individuals in Malaysia were animal dispersed. We speculate that the differences in liana community assemblages between the two biogeographic areas are due to historical and evolutionary processes, as well as climatic variation between the two biogeographic regions.
维生素D结合蛋白在类风湿关节炎中的研究进展

维生素D结合蛋白(vitamin D-binding protein,VDBP)主要合成于肝脏,属于白蛋白超家族中一种相对分子质量为51 000~58 000的多功能血浆球蛋白,血清中的VBDP大部分以游离态的天然蛋白形式存在,此外尚有少量的VDBP与维生素D等结合后以各种复合物形式的结合态VDBP形式存在(占总的VDBP的20%以下)。VDBP作为维生素D的结合蛋白和载体,能够结合血浆中的维生素D及其代谢产物尤其是25(OH)D并转运到各脏器,通过结合维生素D代谢系统来维持钙平衡,这一参与钙调节的生理作用已被学术界广泛认同。近年来,VDBP的研究越来越受到广大学者的关注,并且发现了它具有新的或许是更重要的功能,很多学者已经注意到:在发生炎症和坏死性损伤时,VDBP在血中的浓度显著性地减少。VDBP在RA患者中的研究有零星报道,然而在RA患者中VDBP与骨质疏松的关系研究却罕见有文献报道。
不同类型乳腺炎性疾病的MRI研究进展

乳腺炎性疾病是乳腺的常见病、多发病,临床根据是否处于哺乳期发病分为哺乳期乳腺炎和非哺乳期乳腺炎性病变。非哺乳期乳腺炎性病变根据病理类型分为四类:单纯性乳腺炎,即非特异性感染性乳腺炎;乳腺导管相关性炎性病变,包括导管扩张症、导管周围炎、乳晕后脓肿和浆细胞性乳腺炎(plasma cell mastitis,PCM);肉芽肿性乳腺炎(granulomatous mastitis,GM);炎性脓肿。其中肉芽肿性乳腺炎分为特异性肉芽肿性乳腺炎和特发性肉芽肿性乳腺炎[1](idiopathic granulomatous mastitis,IGM),特异性肉芽肿性乳腺炎主要是临床较少见的肉芽肿性炎性病变,包括乳腺结核(tuberculous mastitis,TBM)、真菌感染和韦格氏肉芽肿性乳腺炎等;而IGM临床上很少见,其中以特发性肉芽肿性小叶性乳腺炎(idiopathic granulomatous lobular mastitis,IGLM)相对略多。处于哺乳期和非哺乳期的急性乳腺炎由于具有明显的体征与临床症状,因此比较容易明确诊断和鉴别。非哺乳期乳腺炎病因往往不是很明确,而且很多不典型的非哺乳期乳腺炎临床表现不具有特征性,以至于鉴别诊断较为困难。