mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Equilibria in Load Balancing Games

A Nash equilibrium (NE) in a multi-agent game is a strategy profile that is resilient to unilateral deviations.A strong Nash equilibrium (SE) is one that is stable against coordinated deviations of any coalition.We show that,in the load balancing games,NEs approximate SEs in the sense that the benefit of each member of any coalition from coordinated deviations is well limited.Furthermore,we show that an easily recognizable special subset of NEs exhibit even better approximation of SEs.
Diffraction-induced edge contrast enhancement for terahertz imaging

Contrast enhancement is particularly important for imaging of weakly absorbing materials. We demonstrate the inherent contrast-enhancement effect at the edges of a transparent object by using a conventional pulsed terahertz imaging setup without additional modification of the system design. We provide both experimental and theoretical evidence suggesting that this effect is a consequence of the frequency-dependent energy loss of the terahertz radiation induced by edge diffraction. The influence of the phase step of the broadband terahertz pulses on the edge contrast is discussed.
Theoretical modelling and experimental study of novel photothermal microactuators

We present a category of novel photothermal (PT) microactuators. Each microactuator consists of two PT arms that are jointed at the free end and connected to an anchor at the fixed end. When a laser beam irradiates one of the arms (called hot arm, and the other is cold arm), light energy is absorbed and converted into heat. The asymmetric thermal expansion of the hot and cold arms results in lateral deflection. Based on conduction heat transfer theory and heat dissipation mechanism, we study the PT effects and establish the theoretical model of PT expansion for the microactuators. The temperature distribution and the linear thermal expansion can be numerically calculated. The analytical solution provides an insight into the operation of the actuators and predicts the performance of the actuators with new designs. A symmetry microactuator and a microswitch as the prototypes have been fabricated and tested. The experimental results are in good agreement with the theoretical predictions and prove the feasibility of the novel PT microactuators.
Biomarkers for noninvasive biochemical diagnosis of nonalcoholic steatohepatitis: Tools or decorations?

In light of the growing epidemics of nonalcoholic fatty liver disease (NAFLD), identification and validation of the novel biochemical surrogate markers for nonalcoholic steatohepatitis (NASH) are paramount to reduce the necessity for liver biopsy. The availability of such markers has t remendous potent ial to radically alter the management strategies of NAFLD patients and to monitor the disease activity. Although current biomarkers do not entirely fulfill the many requirements for the identification of patients with NASH, they should not discourage our quest, but remind us that we need to cognize the challenges ahead.
Effect of early propranolol administration on portal hypertensive gastropathy in cirrhotic rats

AIM: To investigate any protective effect of early propranolol administration in the development of portal hypertensive gastropathy in cirrhotic rats. METHODS: For the development of liver cirrhosis and portal hypertensive gastropathy, 60 rats underwent ligation of the left adrenal vein and complete devascularization of the left renal vein, followed by phenobarbital and carbon tetrachloride (CCl4) administration. After two weeks of CCl_4 administration, the rats were randomly separated into two groups. In group A, propranolol was continuously administered intragastrically throughout the study, whereas in group B normal saline (placebo) was administered instead. Hemodynamic studies and vascular morphometric analysis of gastric sections were performed after complete induction of cirrhosis. RESULTS: Vascular morphometric studies showed higher numbers of vessels in all mucosal layers in the control group. Statistical analysis revealed a significantly higher total vascular surface in the control group compared to the propranolol group, but with no statistically significant difference between the mean vascular surfaces between the groups. Our study clearly shows that the increased mucosal blood flow is manifested by a marked increase of vessel count. CONCLUSION: Early propranolol's administration in portal hypertensive cirrhotic rats seems to prevent intense gastric vascular congestion that characterizes portal hypertensive gastropathy.
Emerging treatments for complex perianal fistula in Crohn's disease

Complex perianal fistulas have a negative impact on the quality of life of sufferers and should be treated. Correct diagnosis, characterization and classification of the fistulas are essential to optimize treatment. Nevertheless, in the case of patients whose fistulas are associated with Crohn's disease, complete closure is particularly difficult to achieve. Systemic medical treatments (antibiotics, thiopurines and other immunomodulatory agents, and, more recently, anti-tumor necrosis factor-α agents such as infliximab) have been tried with varying degrees of success. Combined medical (including infliximab) and less aggressive surgical therapy (drainage and seton placement) offer the best outcomes in complex Crohn's fistulas while more aggressive surgical procedures such as fistulotomy or fistulectomy may increase the risk of incontinence. This review will focus on emerging novel treatments for perianal disease in Crohn's patients. These include locally applied infliximab or tacrolimus, fistula plugs, instillation of fibrin glue and the use of adult expanded adipose-derived stem cell injection. More welldesigned controlled studies are required to confirm the effectiveness of these emerging treatments.
Design and Stability of Operating Mechanism for a Spacecraft Hatch

This article introduces the working principles of a spacecraft hatch including its operating process and moving trajectory. On this basis, an operating mechanism is designed to execute automatic open and close action of the hatch and measure the operating torques. Analysis on the mechanism's configuration and topological structure of each phase of movement proves that it is a typi-cal variable freedom mechanism. The mechanism manipulates the hatch in accordance with the moving trajectory requirements through configuration transformation. Kinematic analysis and simulation of some typical configurations show that the velocity differences among mechanism components themselves and the components and their abutting components could exert influences on its working stability during configuration transformation. To solve the problem, stability conditions of configuration transfor-mation are proposed. Appropriate control models are established for the output velocity curves of the driving servo motor and solved based on the stability conditions and rules of movement. Results from another simulation demonstrate that the proposed control models ensure smooth configuration transform and stable operation.
Analysis of non-symmetrical flapping airfoils

Simulations have been done to assess the lift, thrust and propulsive efficiency of different types of nonsymmetrical airfoils under different flapping configurations. The variables involved are reduced frequency, Strouhal number, pitch amplitude and phase angle. In order to analyze the variables more efficiently, the design of experiments using the response surface methodology is applied. Results show that both the variables and shape of the airfoil have a profound effect on the lift, thrust, and efficiency. By using nonsymmetrical airfoils, average lift coefficient as high as 2.23 can be obtained. The average thrust coefficient and efficiency also reach high values of 2.53 and 0.6 I, respectively. The lift production is highly dependent on the airfoil's shape while thrust production is influenced more heavily by the variables. Efficiency falls somewhere in between. Two-factor interactions are found to exist among the variables. This shows that it is not sufficient to analyze each variable individually. Vorticity diagrams are analyzed to explain the results obtained. Overall, the S1020 airfoil is able to provide relatively good efficiency and at the same time generate high thrust and lift force. These results aid in the design of a better omithopter's wing.
Experimental Study of Motion of Nitrogen Taylor Bubbles and Liquid Slugs in Inclined Tubes

This article studies rising velocity of Taylor bubbles and liquid slugs in liquid nitrogen at different axial positions in upward inclined tubes by means of a high speed motion analyzer. The bottom-closed tubes in the experiments are 1.0 m long with an inner diameter of 0,014 m or 0.018 m. The tube inclines upward from 0° to 50° with respect to the normal. Statistical method is used to analyze the data of the Taylor bubble and the liquid slug velocity. Reflecting the effects of the inclination angle on the rising velocity of Taylor bubbles and liquid slugs, the experimental results indicate the similar trend the Taylor bubble velocity and the liquid slug velocity have: it increases first, and then decreases with the increase of the inclination angle. Moreover, with the increase of the inclination angle, the liquid slug velocity becomes greater than Taylor bubble velocity.
Dynamic Analysis of Contact Bounce of Aerospace Relay Based on Finite Difference Method

Contact bounce of relay, which is the main cause of electric abrasion and material erosion, is inevitable. By using the mode expansion form, the dynamic behavior of two different reed systems for aerospace relays is analyzed. The dynamic model uses Euler-Bernoulli beam theory for cantilever beam, in which the driving force (or driving moment) of the electromagnetic system is taken into account, and the contact force between moving contact and stationary contact is simulated by the Kelvin-Voigt vis-coelastic contact model. Analytical results have been complemented by the finite difference calculation of the nonlinear partial differential equations of reed system. The calculation results indicate that with the driving force (or driving moment) being in-creased, the closing time of contact is decreased, but the maximum bouncing displacement and bouncing time tend to be de-creased first and then increased, which means that there are minimum values of maximum bouncing displacement and bouncing time. The closing time of contact, the maximum bouncing displacement, and bouncing time all tend to be decreasing with the pushrod being approaching the contact. The model can be used as design tool to improve relay performance and reduce contact bounce.
Integration of a 5-axis Spline Interpolation Controller in an Open CNC System

A 5-axis controller with curve interpolation function is developed to satisfy high-speed and high-precision computer numerical control (CNC) machining of machine parts with complex shapes in the authors-devised open CNC system. The instruction format of this interpolation method and the generation procedure of the numerical control (NC) files are introduced. The interpolation curves of both position vectors and orientation vectors constructed by the controller are C~2 continuous and independent of machine tool kinematics. The controller fits in with any 5-axis machine tools by configuring the related kinematics transformation module. The position curve is to be discretized in realtime using a truncated Taylor series expansion. Coordinated motions of linear axes and rotary axes are achieved by relating the orientation curve parameter to the position curve parameter in the machining process. The performance of the proposed controller is demonstrated by a practical example.
二氧化碳与环氧化合物反应均相催化剂的研究进展

现在全世界每年产生二氧化碳的量已超过百亿吨,预计到2010年全球二氧化碳的排放量将是278亿吨.二氧化碳是一种温室气体,它在大气中的含量不断增加会导致全球变暖,造成全球性气候异常,给生态环境带来严重影响,引发频繁的自然灾害.因此,如何控制二氧化碳的排放已经引起世界范围的广泛关注.2007年12月在印度尼西亚巴厘岛召开的联合国巴厘国际气候会议重点讨论了二氧化碳的排放问题,目前世界各国均投入大量人力物力进行二氧化碳的治理,如发达国家研发将二氧化碳收集并深埋地下,在治理的同时也限制企业二氧化碳排放量.
Secure proxy signature scheme with fast revocation in the standard model

Proxy signature is an important cryptographic primitive and has been suggested in numerous applications. The revocation of delegated rights is an essential issue of the proxy signature schemes. In this article, a security model of proxy signature schemes with fast revocation is formalized. Under the formal security framework, a proxy signature scheme with fast revocation based on bilinear pairings is proposed. A security mediator (SEM), which is an on-line partially trusted server, is introduced to examine whether a proxy signer signs according to the warrant or he/she exists in the revocation list. Moreover, the proxy signer must cooperate with the SEM to generate a valid proxy signature, thus the proposed scheme has the property of fast revocation. The proposed scheme is provably secure based on the computational Diffie-Hellman (CDH) intractability assumption without relying on the random oracles, and satisfies all the security requirements for a secure proxy signature.
A critical role of PUMA in maintenance of genomic integrity of murine spermatogonial stem cell precursors after genotoxic stress

Neonatal gonocytes are precursors of spermatogoniai stem cells. Preserving their integrity by elimination of dam-aged germ cells may be crucial to avoid the transmission of genetic alterations to progeny. Using T-irradiation, we investigated by immunohistochemistry, flow cytometry and real-time PCR components of the death machinery in neonatal gonocytes. Their death was correlated with caspase 3 activation but not with AIF translocation into the nu-cleus. The in vivo contribution of both the extrinsic and the intrinsic pathways was then investigated. We focused on the roles of TRAIL/Death Receptor 5 (DR5) and PUMA. Our results were validated using knockout mice. Whereas DR5 expression was upregulated at the cell surface after radiation, caspase 8 was not activated. However, we detected caspase 9 cleavage associated with cytochrome c release. In mice deficient for PUMA, radiation-induced gonocyte apoptosis was reduced, whereas invalidation of TRAIL had no effect. Overall, our results show that genotoxic stress-induced apoptosis of gonocytes is caspase-dependent and involves almost exclusively the intrinsic pathway. Further-more, PUMA plays a critical role in the maintenance of genomic integrity of spermatogonial stem cell precursors.
可口可乐溶解植物性胃石并文献复习

胃石症的发生率约为0.4%,是患者进食的某些食物或药物在胃内形成巨大凝固物或硬块、不能通过幽门而滞留在胃内所致,目前临床多以内镜下治疗和手术治疗为主.2008年12月以来,我们对发现的6例植物性胃石症患者采用可口可乐溶石方法,全部获得成功.
术者寻找胃癌标本中淋巴结的经验

胃癌分期的符合率约为20%～75%,其主要原因是由于淋巴结分期不符合所造成的.在我国外科医师只负责手术,而手术后标本的检查则由病理科医师完成.手术者见到的病理报告与所要求的相差甚远,故手术者需要自己检查标本,寻找淋巴结.本研究旨在探讨手术者寻找淋巴结的意义.
硼替佐米治疗多发性骨髓瘤致大疱性表皮坏死松解症型药疹一例

患者女,76岁.因发现前胸壁肿物2个月,于2008年9月22日入院.2008年7月患者出现前胸壁肿物,大小约1.5 cm×1.5 cm,质硬,无压痛,未重视.
铅中毒七例临床分析

随着劳动保护的加强,职业性铅中毒的发病率逐渐下降,但生活性铅中毒却时有发生.由于其临床表现不典型,中毒原因隐匿,在综合性医院容易因消化系统症状和贫血表现而被误诊为其他消化或血液系统疾病.本研究结合我院1984年6月-2008年6月共7例铅中毒患者的临床资料进行分析,以提高临床医师对此病的认识.
交锁髓内钉治疗复杂前臂骨折八例

前臂骨折是一种较为常见的骨折,AO统计约占全部骨折的10%～14%~([1]).成人前臂骨折多采用手术治疗.笔者对2002年8月-2004年6月用ForeSight交锁髓内钉治疗复杂前臂骨折8例(9臂)患者的疗效进行回顾性分析.
外周血纤维细胞参与皮肤创面修复的研究进展

皮肤创面愈合是一个复杂而有序的生物学过程,涉及修复细胞、细胞外基质、细胞因子与生长因子等多方面因素在时空调控下的多环节相互作用.成纤维细胞作为组织中的主要修复细胞,通过合成并分泌细胞外基质、细胞因子、生长因子、蛋白酶,以及转化为能收缩创面的肌成纤维细胞等多种方式在创面修复中发挥重要作用,因而一直是创面修复研究领域中的热点.
瘤型麻风二例

例1男,55岁,农民.患者1年前不明原因全身出现大小不等的结节,渐增多,无疼痛及瘙痒感,少许结节有破溃、溢脓.给予静脉滴注抗生素等治疗,病情迁延不愈,1周前出现四肢麻木感.既往有面瘫史数年.体格检查:双侧眉毛大部分脱落,左侧鼻唇沟变浅,口角右歪.
莫西沙星治疗成人支原体肺炎

支原体肺炎在社区获得性肺炎中占较大比例L[1-3].虽然其好发于儿童和青年,但有资料显示40岁以上肺炎患者中15%为支原体肺炎[4].成人支原体肺炎预后良好,合并其他系统损伤少见,但偶可发展为急性呼吸窘迫综合征(ARDS)及肺间质纤维化等严重并发症[5].
Dielectric coatings for optimized low-loss saturable absorbers for high-power ultrafast laser

With the development of high power ultrafast laser passively mode-locked by a semiconductor saturable absorber mirror(SESAM),tire damage threshold and degeneration mechanism of the SESAM become more and more important.One way to reduce the maximum electric field inside the active part of the SESAM is the use of a dielectric coating on the top of the semiconductor structure.With Fresnel formula,optical transfer matrix,and optical thin film theory,the electric field distribution and reflectance spectrum can be simulated.Wc introduce the design principles of SESAM including the dependence of reflectance spectrum on dielectric function of absorber,and investigate the dependences of the electric field distribution,modulation depth,reflectance spectrum,and the relative value of incident light power at the top quantum well of SESAM on the number of SiO2/Ta2O5 layers.
A Pan-sharpening method appropriate to vegetation applications

An improved Pan-sharpening algorithm appropriate to vegetation applications is proposed to fuse a set of IKONOS panchromatic(PAN)and multispeetral image(MSI)data.The normalized difference vegetation index(NDVI)is introduced to evaluate the quality of fusion products.Compared with other methods such as principal component analysis(PCA),wavelet transform(WT),and curvelet transform(CT),this algorithm has a better trade-off between keeping the spatial and spectral information.The NDVI performances indicate that the fusion product of this method is more suitable for vegetation applications than the other methods.
Surface sediment diatoms from the western Pacific marginal seas and their correlation to environmental variables

Diatom data of 192 surface sediment samples from the marginal seas in the western Pacific together with modern summer and winter sea surface temperature and salinity data were analyzed. The results of canonical correspondence analysis show that summer sea-surface salinity (SSS) is highly positively correlated with winter SSS and so is summer sea-surface temperature (SST) with winter SST. The correlations between SSSs and SSTs are less positively correlated, which may be due to interactions of regional current pattern and monsoon climate. The correlations between diatom species, sample sites and environmental variables concur with known diatom ecology and regional oceanographic characters. The results of forward selection of the environmental variables and associated Monte Carlo permutation tests of the statistical significance of each variable suggest that summer SSS and winter SST are the main environmental factors affecting the diatom distribution in the area and therefore preserved diatom data from down core could be used for reconstructions of summer SSS and winter SST in the region.
cDNA cloning and expression of a collectin from red-spotted grouper (Epinephelus akaara)

Lectins play a crucial role in the innate immunity of invertebrates and vertebrates by recognizing and disposing of pathogens. We obtained the complete cDNA of a C-type lectin (EALec1) from Epinephelus akaara using RACE. The complete EALec1 cDNA sequence was 827 bp. The 5-UTR and 3-UTR were 28 bp and 151 bp, respectively, in length. The sequence also contained a polyadenylation signal AATAAA and a poly(A) tail. The EALec1 cDNA encodes polypeptides with 215 amino acids, including a signal peptide of 31 amino acids. The protein has a cysteine-rich region at the N terminal, a collagenous region characterized by G-X-Y repeats, a neck region, and a typical carbohydrate-recognition domain (CRD), indicating that EALec1 is a collectin. The key recognition positions of this CRD are EPD, isolated for the first time in fish. These are likely the interim types, between mannan-binding lectin and galactose-binding lectin. We evaluated the expression pattern of EALec1 in 12 different tissues using RT-PCR. EALec1 was expressed in all tissues, though at different levels. In addition, we inserted EALec1 into an expression vector (pET-28a) for transformation into the BL21 engineering bacteria. Based on enzyme digestion and sequencing of the positive clone, we successfully constructed the EALec1 recombinant expression vector.
Summertime community structure of intertidal macrobenthos in Changdao Archipelago, Shandong Province, China

The community structure of intertidal macrobenthos in Changdao Archipelago (north of Shandong Peninsula, between Bohai Bay and the northern Yellow Sea) was examined based on samples collected from 14 stations in five transects in June 2007. Three stations corresponding to high, medium and low tidal areas were set up for each transect. A total of 68 macrobenthic species were found in the research region, most of which belonged to Mollusca and Crustacea. The average abundance and biomass of the macrobenthos was 1 383 ind/m~2 and 372.41 g/m~2, respectively. The use of an arbitrary similarity level of 20% resulted in identification of five groups among the 14 stations in the research region. There were remarkable differences in the biomass, abundance and Shannon-Wiener diversity index of the different sediments. Specifically, the order of biomass was rocky shores > gravel > mud-sand > coarse sand > stiff mud, while the order of abundance was rocky shores > coarse sand > mud-sand > gravel > stiff mud, and that of the diversity index was mud-sand > gravel > stiff mud > rocky shores > coarse sand. The above results revealed that the sediment type was the most important factor affecting the structure of the macrobenthic community of the intertidal zone.
先天性肘关节融合合并肩关节脱位一例

患儿:男,32 d.出生时即发现右肘关节半屈曲畸形,不能主动及被动屈伸.满月后至当地医院就诊,拍片发现"右上肢畸形",未作处理,遂转至我院就诊.
Muscle hematoma: A critically important complication of alcoholic liver cirrhosis

An iliopsoas hematoma can occur either spontaneously or secondary to trauma or bleeding tendency due to hemophilia and anticoagulant therapy. Although liver cirrhosis is commonly associated with coagulopathy, iliopsoas hematoma is very rare. We herein, present a case of bilateral iliopsoas hematoma in a patient with alcoholic cirrhosis, and review the literature on muscle hematoma associated with cirrhosis. A 56-year-old man with alcoholic cirrhosis was admitted in a state of shock with anemia. The cause of anemia could not be detected, and the patient was treated conservatively. The site of bleeding was not detected with either gastroduodenal endoscopy or upper abdominal computed tomography, the latter of which did not include the iliopsoas muscle. He died on the 10th day of admission and bilateral iliopsoas hematomas were found on autopsy. An iron stain was positive in the iliopsoas muscle. Eight cases of muscle hematoma associated with cirrhosis, including the present case, were found in a review of the literature. Four of these cases involved the rectus abdominis muscle, 3 involved the iliopsoas muscle and 1 involved combined muscles. Alcoholic cirrhosis accounted for 75% of the cases. One case (12.5%) was associated with virus-related cirrhosis, and another with combined virus-and alcohol-related cirrhosis. The mortality rate was 75% despite early diagnosis and low risk scores for cirrhosis. Muscle hematoma in patients with cirrhosis isclosely related to alcoholism, and the mortality rate of the condition is extremely high. In conclusion, muscle hematoma should be recognized as an important complication of cirrhosis.
农业技术创新在农业发展中的作用

从土地、资金、人才、资金、市场、体制、组织化程度等方面分析了我国农业技术创新中存在的问题,并提出了相应的措施和建议,阐述了政府城乡统筹发展政策对农业技术创新产生的影响.
Faulting, magmatism and crustal oceanization of the Okinawa Trough

The paper focuses on the characteristics of faulting and magmatism of the Okinawa Trough and the relation between them. En-echelon grabens are ranked oblique to the continental shelf edge uplift, and the Longwang uplift, the rifting block ridge in the northern segment and the "Mianhua uplift" in the southern segment have possibly preserved characteristics of volcanism and magmatism occurring with those rifting phases. The clockwise rotation of the southern Ryukyu Islands, driven by collision between Luzon and Taiwan, has played a key role in the crustal oceanization, enhancing the crustal extension of the southern segment and inducing volcanic magmatism in those grabens, among which the Yacyama graben is a typical example of the presence of oceanic crust. Faulting and magmatism were mainly migrating towards the island arc asymmetrically. The crustal oceanization of the Okinawa Trough is difficultly interpreted by the linear magnetic anomaly model, which is fit for the symmetric spreading of the mid-oceanic ridges.