mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Tower-Based Greenhouse Gas Measurement Network Design-The National Institute of Standards and Technology North East Corridor Testbed

The North-East Corridor (NEC) Testbed project is the 3rd of three NIST (National Institute of Standards and Technology) greenhouse gas emissions testbeds designed to advance greenhouse gas measurements capabilities. A design approach for a dense observing network combined with atmospheric inversion methodologies is described. The Advanced Research Weather Research and Forecasting Model with the Stochastic Time-Inverted Lagrangian Transport model were used to derive the sensitivity of hypothetical observations to surface greenhouse gas emissions (footprints). Unlike other network design algorithms, an iterative selection algorithm, based on a k-means clustering method, was applied to minimize the similarities between the temporal response of each site and maximize sensitivity to the urban emissions contribution. Once a network was selected, a synthetic inversion Bayesian Kalman filter was used to evaluate observing system performance. We present the performances of various measurement network configurations consisting of differing numbers of towers and tower locations. Results show that an overly spatially compact network has decreased spatial coverage, as the spatial information added per site is then suboptimal as to cover the largest possible area, whilst networks dispersed too broadly lose capabilities of constraining flux uncertainties. In addition, we explore the possibility of using a very high density network of lower cost and performance sensors characterized by larger uncertainties and temporal drift. Analysis convergence is faster with a large number of observing locations, reducing the response time of the filter. Larger uncertainties in the observations implies lower values of uncertainty reduction. On the other hand, the drift is a bias in nature, which is added to the observations and, therefore, biasing the retrieved fluxes.
Improving Continuous-Variable Measurement-Device-Independent Multipartite Quantum Communication with Optical Amplifiers

The developing tendency of continuous-variable(CV) measurement-device-independent(MDI) quantum cryptography is to cope with the practical issue of im plemen ting scalable quantum networks. Up to now, most theoretical and experimental researches on CV-MDI QKD are focused on two-party protocols. However, we suggest a CV-MDI multipartite quantum secret sharing(QSS) protocol use the EPR states coupled with optical amplifiers. More remarkable, QSS is the real application in multipartite CV-MDI QKD, in other words, is the concrete im plemen tation method of multipartite CV-MDI QKD. It can implement a practical quantum network scheme, under which the legal participants create the secret correlations by using EPR states connecting to an untrusted relay via insecure links and applying the multi-entangled Greenberger-Horne-Zeilinger(GHZ) state analysis at relay station. Even if there is a possibility that the relay may be completely tampered, the legal participants are still able to extract a secret key from network communication. The numerical simulation indicates that the quantum network communication can be achieved in an asymmetric scenario, fulfilling the demands of a practical quantum network. Additionally, we illustrate that the use of optical amplifiers can compensate the partial inherent imperfections of detectors and increase the transmission distance of the CV-MDI quantum system.
Photon Emissions from a Spinor Bose-Einstein Condensate of Positroniums

We investigate the quantum dynamics of the decay of a multiple-component positronium condensate into pairs of photons. A positronium atom has four internal spin states which are intercon verti ble through s-wave interactions. The quantum fields of all spin states of positroniums and photons are simulated from first principle in quasi-one-dimensional system using the truncated Wigner method. This method warrants us a full treatment of the depletion of positronium fields and the spin mixing induced by s-wave collisions between positronium atoms. Particularly, it yields the momentum spectrum of the emitted photons and the photon-photon correlations.
Controlled fabrication of nanoscale wrinkle structure by fluorocarbon plasma for highly transparent triboelectric nanogenerator

In this paper, we report a novel nanoscale wrinkle-structure fabrication process using fluorocarbon plasma on poly (dimethylsiloxane) (PDMS) and Solaris membranes. Wrinkles with wavelengths of hundreds of nanometers were obtained on these two materials, showing that the fabrication process was universally applicable. By varying the plasma-treating time, the wavelength of the wrinkle structure could be controlled. Highly transparent membranes with wrinkle patterns were obtained when the plasmatreating time was < 125 s. The transmittances of these membranes were >90% in the visible region, making it difficult to distinguish them from a flat membrane. The deposited fluorocarbon polymer also dramatically reduced the surface energy, which allowed us to replicate the wrinkle pattern with high precision onto other membranes without any surfactant coating. The combined advantages of high electron affinity and high transparency enabled the fabricated membrane to improve the performance of a triboelectric nanogenerator. This nanoscale, single-step, and universal wrinkle-pattern fabrication process, with the functionality of high transparency and ultra-low surface energy, shows an attractive potential for future applications in micro-and nanodevices, especially in transparent energy harvesters.
Optical screw-wrench for microassembly

For future micro- and nanotechnologies, the manufacturing of miniaturized, functionalized, and integrated devices is indispensable. In this paper, an assembly technique based on a bottom-up strategy that enables the manufacturing of complex microsystems using only optical methods is presented. A screw connection is transferred to the micrometer range and used to assemble screw-and nut-shaped microcomponents. Micro-stereolithography is performed by means of two-photon polymerization, and microstructures are fabricated and subsequently trapped, moved, and screwed together using optical forces in a holographic optical tweezer set-up. The design and construction of interlocking microcomponents and the verification of a stable and releasable joint form the main focus of this paper. The assembly technique is also applied to a microfluidic system to enable the pumping or intermixing of fluids on a microfluidic chip. This strategy not only enables the assembly of microcomponents but also the combination of different materials and features to form complex hybrid microsystems.
Enhance Stability and in vitro Cell Response to a Bioinspired Coating on Zr Alloy with Increasing Chitosan Content

The aim of the present paper is to characterize bioinspired chitosan (CS) + hydroxyapatite (HA) coatings with various components ratio on a zirconium alloy with titanium. The coatings were characterized by FT-IR, SEM, hydrophilic/hydrophobic balance, adherence, roughness, electrochemical stability and in vitro cell response. Electrochemical tests, including potentio-dynamic polarization curves and electrochemical impedance spectroscopy, were performed in normal saline physiological solution. Cell viability of MC3T3-E1 osteoblasts, lactate dehydrogenase, nitric oxide, and Reactive Oxygen Species (ROS) levels, as well as actin cytoskeleton morphology, were evaluated as biological in vitro tests. The results on in vitro cell response indicated good cell membrane integrity and viability for all samples, but an increased cell number, a decreased ROS level and a better cytoskeleton organization were noticed for the sample with a higher CS content. The coating with highest CS concentration indicated the best performance based on the experimental data. The highest hydrophilic character, highest resistance to corrosion and best biocompatibility as well recommend this coating for bioapplications in tissue engineering.
钢丝荦引下颌骨治疗Pierre-Robin综合征致严重呼吸困难一例

Pierre-Robin综合征作为临床罕见的疾病,其诊断和治疗是临床工作必不可少的一个环节,治疗时应该本着创伤小、操作简便、并发症少、易护理等原则,尽早行下颌骨牵引手术治疗较为稳妥。
民航飞行员高尿酸血症患病率及相关因素研究

尿酸是嘌呤代谢的产物,血清尿酸水平升高可能是尿酸生成过多和(或)肾脏排出减少所致,其代谢障碍可引起高尿酸血症(hyperuricemia, HUA)。研究表明,高尿酸血症与心血管疾病、糖尿病、肾病等疾病的发生和死亡率密切相关,已成为继高血压、高血脂和糖尿病之后影响人类健康的重要危险因素之一。近年来,随着人们生活水平的提高和饮食结构的改变,高尿酸血症的患病率有逐渐升高的趋势,但是常因无明显临床症状而不被人们重视。有关研究也表明,飞行人员高尿酸血症有逐年增多的趋势。因此,本研究对2015年到民航总医院体检的民航男性飞行员高尿酸血症的发病情况及相关因素进行了调查分析,旨在为民航飞行人员疾病的预防及航空卫生保障提供客观依据。
甲壳动物表皮几丁质结合蛋白结构与功能研究进展

由于坚硬表皮的限制,甲壳动物必须经过蜕皮才能生长。蜕皮是一个周期性的动态过程,包括旧表皮降解和新表皮的形成。作为表皮组成成分的几丁质是和蛋白质以结合的形式存在,此蛋白即为几丁质结合蛋白(CBPs),是甲壳动物表皮中重要的结构性蛋白,该类蛋白一般含有特征性的结构域,由蜕皮激素的靶组织———表皮上皮细胞按照一定的周期和步骤表达合成。几丁质结合蛋白与几丁质构成的复合物不仅为钙化作用提供有机支架,而且参与控制钙化的程度,因此,几丁质结合蛋白被认为在表皮的形成、维护以及功能的调节中起重要作用。近年来,传统的分离纯化技术、尤其是高通量测序技术的应用,大大加快了甲壳动物表皮几丁质结合蛋白新基因发现的进程,本文将在结构和功能等方面介绍此类蛋白的研究进展。
水生动物标志物评价镉污染的研究进展

镉是广泛存在于自然环境中的一类化学元素,其化合物易溶于水,采矿业和含镉工业周边水体往往镉含量较高,对周围环境造成了极大危害。环境中高含量的镉,可对生物机体造成严重影响,导致多种器官出现肿瘤,损伤DNA,影响DNA修复及促进细胞增生,导致机体出现畸变、癌变、突变。由于生物体对镉胁迫的调节能力有限,而且在体内不易通过转换作用形成有效排泄,容易在生物体内蓄积并最终通过食物链影响到人类的健康。当前,全世界每年向环境中释放镉的总量为30 000 t,其中82%~94%进入土壤,继而部分随着降雨进入水体。2007年“镉大米”事件导致人们对镉污染再次广泛关注,农业部稻米及制品质量监督检验测试中心的抽查结果显示,在所抽检样品中,约10%的样品镉含量超标。镉是生物生长发育的非必需元素,几乎对所有水生动物都有毒性。水体中的镉通过呼吸、消化、体表渗透等途径进入水生动物体内。作为大多数终生生活于水体中的水生动物来说,因缺乏主动离开水体的能力,只能被动暴露于镉超标的水体中,其组织器官、生理机能甚至遗传特性必将发生相应的变化。生物标志物是生物体受环境污染物严重损害之前,在生物体分子、细胞和个体水平上出现的异常化的生物学特征。生物标志物可以对严重镉毒害提供早期预警,不仅有助于确定生物体所受影响及潜在危害,还可用于监测环境中污染物水平。生物标志物的种类繁多,且缺乏统一的标准加以区分,戴伟根据有毒物质对水生生物毒性效应将重金属生物标志物分为暴露生物标志物、效应生物标志物和易感性生物标志物。笔者通过综述水生动物标志物评估镉污染的研究进展,以期对镉污染的早期预警和生态控制提供参考依据。
Ratios of T-helper 2 Cells to T-helper 1 Cells and Cytokine Levels in Patients with Hepatitis B

Background: Hepatitis B is an immune response-mediated disease. The aim of this study was to explore the differences of ratios of T-helper (Th) 2 cells to Thl cells and cytokine levels in acute hepatitis B (AHB) patients and chronic hepatitis B virus (HBV)-infected patients in immune-tolerance and immune-active phases. Methods: Thirty chronic HBV-infected patients in the immune-tolerant phase (IT group) and 50 chronic hepatitis B patients in the immuneactive (clearance) phase (IC group), 32 AHB patients (AHB group), and 13 healthy individuals (HI group) were enrolled in the study. Th cell proportions in peripheral blood, cytokine levels in plasma, and serum levels of HBV DNA, hepatitis B surface antigen, and hepatitis B e antigen were detected. Results: The Th1 cell percentage and Th2/Thl ratio in the HBV infection group (including IT, IC, and AHB groups) were significantly different from those in HI group (24.10% ± 8.66% and 1.72 ± 0.61 vs. 15.16% ± 4.34% and 2.40 ± 0.74,respectively; all P < 0.001). However, there were no differences in the Th1 cell percentages and Th2/Th1 ratios among the IT, IC, and AHB groups. In HBV infection group, the median levels of Flt3 ligand (Flt3L), interferon (IFN)-γ, and interleukin (IL)-17A were significantly lower than those in HI group (29.26 pg/ml, 33.72 pg/ml, and 12.27 pg/ml vs. 108.54 pg/ml, 66.48 pg/ml, and 35.96 pg/ml, respectively; all P < 0.05). IFN-α2, IL-10,and transforming growth factor (TGF)-β2 median levels in hepatitis group (including patients in AHB and IC groups) were significantly higher than those in IT group (40.14 pg/ml, 13.58 pg/ml, and 557.41 pg/ml vs. 16.74 pg/ml, 6.80 pg/ml, and 419.01 pg/ml, respectively; all P < 0.05),while patients in hepatitis group had significant lower Flt3L level than IT patients (30.77 vs. 59.96 pg/ml, P = 0.021). Compared with IC group, patients in AHB group had significant higher median levels ofIL-10,TGF-β1,and TGF-β2 (22.77 pg/ml, 10,447.00 pg/ml,and 782.28 pg/ml vs. 8.66 pg/ml, 3755.50 pg/ml, and 482.87 pg/ml, respectively; all P < 0.05). Conclusions: Compared with chronic HBV-infected patients in immune-tolerance phase, chronic HBV-infected patients in immune-active phase and AHB patients had similar Th2/Th1 ratios, significantly higher levels ofIFN-a2, IL-10, and TGF-β. AHB patients had significantly higher IL-10 and TGF-β levels than chronic HBV-infected patients in immune-active phase.
免疫应答二维模型的构建及其对移植排斥反应的解说

作为近代最具代表性的医学成就,自1954年首例成功以来,器官移植已挽救了超过100万濒临死亡的患者。但是排斥反应和器官移植如影随形,严重影响了移植物和受者的生存时间。排斥反应是机体正常的免疫应答过程,为什么会发生免疫应答和排斥反应?这是移植面临的首要问题,也是免疫学最根本的问题。半个多世纪以来,在对获得性免疫系统和固有免疫系统的研究探索中不断出现天才的假设和严谨的验证,逐渐揭示出这两大系统在免疫应答中的作用。近年来又有许多证据强烈提示了固有免疫系统对获得性免疫系统的影响,使这个问题的解释越来越接近真相,可谓“山高月小,水落石出”。笔者以已有的几种理论假说为基础,尝试构建一种二维模型来综合这两大免疫系统间的交互作用,以期大略地解释免疫应答的发生,并据此模型对排斥反应的强度给出一个估算公式,期望对控制排斥反应有所启示。
Outcomes and risk factors of ventilator-associated pneumonia in neonates

Background: Ventilator-associated pneumonia (VAP) in neonates has been associated with high mortality and poor outcome. This study aimed to compare the incidence, risk factors, and outcomes of VAP and non-VAP conditions in neonates. Methods: We performed a prospective cohort study in a neonatal intensive care unit (NICU) in Thailand from January 2014 to December 2014. All neonatal patients who were ventilated more than 48 hours were enrolled. Results: There were 128 enrolled patients. The median (inter quartile range) gestational age and birthweight were 35 (30.2, 37.8) weeks and 2380 (1323.8, 3020.0) g. There were 17 VAP patients (19 episodes) and 111 non-VAP ones. The VAP rate was 13.3% or 10.1 per 1000 ventilator days. According to the multivariate analysis, a birthweight less than 750 g [adjusted odds ratio (aOR)=10.75, 95% confidence interval (CI)=2.35-49.16; P=0.002] and sedative medication use (aOR=4.00, 95% CI=1.23-12.50; P=0.021) were independent risk factors for VAP. Compared with the non-VAP group, the median difference in the VAP group yielded a significantly longer duration of NICU stay (18 days, P=0.001), total length of hospital stay (16 days, P=0.002) and higher hospital costs ($5113, P=0.001). The in-hospital mortality rate in the VAP and non-VAP groups was 17.6% and 15.3% (P=0.73), respectively. Conclusions: A neonatal birthweight less than 750 g and sedative medication use were independent risk factors for VAP. Our VAP patients experienced a longer duration of both NICU and hospital stay, and incurred higher hospitalization costs.
Antibacterial Cellulose Composite Membranes Prepared in Ionic Liquid via Phase Inversion Method

Antibacterial cellulose/TiO_2 nanoparticles(CTM), cellulose/ZnO nanoparticles(CZM) and cellulose/chitosan(CCM) composite membranes were successfully prepared using ionic liquid(IL), 1-butyl-3-methylimidazolium chloride([BMIMJCl), via phase inversion while [BMIM]Cl was recycled through evaporation and used to prepare cellulose membrane(CM-RILs). The pure water flux(PWF) was significantly increased via adding TiO_2, ZnO and chitosan to cellulose and a perfect retention value of 67000 bovine serum albumin(BSA) was achieved in all the prepared membranes. The bacterial reduction of cellulose/TiO_2 membrane, cellulose/ZnO membrane and cellulose/chitosan membrane with a blend ratio of 10:3[m(cellulose):m(additive)] was the maximum and reached 100%, 100% and 97.2% for S. aureus and 100%, 99.8% and 97.0% for E. coli, respectively. The results demonstrate that cellulose/TiO_2 membrane, cellulose/ZnO membrane and cellulose/chitosan membrane can act as good antibacterial materials in water treatment, medical treatment, food industry as well as other applications.
Crack Detection in Pipes with Different Bend Angles Based on Ultrasonic Guided Wave

Pipeline plays an indispensable role in process industries,because the progressing crack-like defects of in it may result in serious accidents and significant economic losses.Therefore,it is essential to detect the cracks occurred in pipelines.The axial crack-like defects in elbows with different angle are inspected by using the T (0,1) mode guided waves,in which different configurations including 45°,90°,135°and 180° (straight pipe) are considered respectively.Firstly,the detection sensitivity for different defect location is experimentally investigated.After that,finite element simulation is used to explore the propagation behaviors of T (0,1) mode in different bend structures.Simulation and experiment results show that the crack in different areas of the elbow can affect the detection sensitivity.It can be found that the detection sensitivity of crack in the middle area of the elbow is higher compared to the extrados and intrados of the elbow.Finally,the mode conversion is also investigated when the T (0,1) crosses the bend,and the results show that bend is a key factor to the mode conversion phenomenon which presents between the T (0,1) mode and F (1,2) mode.
锰催化还原工艺处理高浓度含双氧水废水工程实践

随着半导体制造先进制程的推进,废水中双氧水的浓度不断上升,造成了总排放口COD偏高。采用锰催化还原工艺处理高浓度含双氧水废水,工程实践表明:在进水双氧水浓度达到3 000 mg/L以上时,将pH调至10.5~11.5,控制锰砂塔流速7~8 m/s,反应3 min,双氧水的去除率可以达到99%以上,总排放口COD由355 mg/L降至150 mg/L。
A system consisted of flame ionization detector and sulfur chemiluminescence detector for interference free determination of total sulfur in natural gas

A new detection system consisted of a flame ionization detector (FID) and a sulfur chemiluminescence detector (SCD) was developed for sensitive and interference free determination of total sulfur in natural gas by non-separation gas chromatography. In this system, sulfur containing compounds and hydrocarbons were firstly burned in the FID using oxygen rich flame and converted to SO_2, CO_2 and H_2O, respectively. The products from FID were transported into the SCD with hydrogen rich atmosphere wherein only SO_2 could be reduced to SO and reacted with O_3 to produce characteristic chemiluminescence. Therefore, the chemiluminescence of CO found in conventional SCD were eliminated because CO_2 could not be reduced to CO under these conditions. The experimental parameters were systematically investigated. Limit of detection obtained by the proposed system is better than 0.5 μmol/mol for total sulfur and superior to those previously reported. The proposed method not only retains the advantages of the conventional SCD but also provides several unique advantages including no hydrocarbon interference, better stability, and easier calculation. The utility of this technique was demonstrated by the determination of total sulfur in real samples and two certified reference materials (GBW 06332 and GBW (E) 061320).
应用葡萄糖保护自体回输血液红细胞的研究

目的探讨在回输液中加用葡萄糖保护自体回收血液红细胞的效果。方法将160例术中需自体血液回输患者随机分为对用组和葡萄糖组各80例。在自体血液回收时对照组应用肝素盐水,葡萄糖组加用葡萄糖液。检测术前2 h及回输后2 h红细胞计数、血红蛋白水平、红细胞变形指数、红细胞2,3-二磷酸甘油酸含量以及输血不良反应发生率。结果两组患者红细胞计数、血红蛋白量、红细胞变形指数和红细胞2,3-BPG比较,差异有统计学意义(P<0.05,P<0.01);两组输血反应比较,差异无统计学意义(P>0.05)。结论回输液中加用葡萄糖可减少红细胞破坏,保护红细胞功能。
维持性血液透析患者植入型心律转复除颤器植入后感染性心内膜炎一例

患者在植入ICD 1个月余后出现感染症状,在积极抗感染治疗的过程中出现血象三系的减少。分析可能存在的原因:(1)患者本身感染性心内膜炎可引起血小板和白细胞的减低;(2)患者长期肾功能不全导致慢性贫血。在肾功能不全,特别血液透析患者中,利奈唑胺减少血小板、白细胞的不良反应更易发生。对于长期维持性血液透析的尿毒症患者存在安装心脏起搏器或ICD指征时,应仔细检查患者有无长期慢性贫血、营养不良、酸碱平衡紊乱等易感染因素,如存在,则植入应慎重。
人工耳蜗植入对老年双耳重度感音神经性聋患者的听觉及言语能力影响

研究结果显示,老年人人工耳蜗植入后对患者语言功能具有明显的改善作用。因而,对于助听器无效且能够耐受全麻手术的老年患者实施人工耳蜗植入是一种不错的治疗选择,但人工耳蜗植入术后患者听力效果个体间差异大。耳鸣的发生常与耳聋相伴,耳鸣在重度感音神经性聋更为常见,发生比例可达67%~100%。Demajumdar等提出,人工耳蜗植入侧宜选择有耳鸣一侧,可达到同时治疗耳聋与耳鸣。本研究观察国产诺尔康电子耳蜗(CS-10A)植入对120例双耳重度感音神经性聋老年语后聋患者的听觉行为、言语能力及耳鸣状况的影响,现报道如下。
Value of Combining Left Atrial Diameter and Amino-terminal Pro-brain Natriuretic Peptide to the CHA2DS2-VASc Score for Predicting Stroke and Death in Patients with Sick Sinus Syndrome after Pacemaker Implantation

Background: The CHA2DS2-VASc score is used clinically for stroke risk stratification in patients with atrial fibrillation (AF). We sought to investigate whether the CHA2DS2-VASc score predicts stroke and death in Chinese patients with sick sinus syndrome (SSS) after pacemaker implantation and to evaluate whether the predictive power of the CHA2DS2-VASc score could be improved by combining it with left atrial diameter (LAD) and amino-terminal pro-brain natriuretic peptide (NT-proBNP). Methods: A total of 481 consecutive patients with SSS who underwent pacemaker implantation from January 2004 to December 2014 in our department were included. The CHA2DS2-VASc scores were retrospectively calculated according to the hospital medical records before pacemaker implantation. The outcome data (stroke and death) were collected by pacemaker follow-up visits and telephonic follow-up until December 31,2015. Results: During 2151 person-years of follow-up, 46 patients (9.6%) suffered stroke and 52 (10.8%) died. The CHA2DS2-VASc score showed a significant association with the development of stroke (hazard ratio [HR] 1.45,95% confidence interval [CI] 1.20-1.75,P<0.001) and death(HR 1.45,95% C/1.22-1.71,P<0.001). The combination of increased LAD and the CHA2DS2-VASc score improved the predictive power for stroke (C-stat 0.69,95% CI0.61-0.77 vs. C-stat 0.66,95% CI0.57-0.74,P=0.013),and the combination of increased NT-proBNP and the CHA2DS2-VASc score improved the predictive power for death (C-stat 0.70,95% CI0.64-0.77 vs. C-stat 0.67,95% C/0.60-0.75, P= 0.023). Conclusions: CHA2DS2-VASc score is valuable for predicting stroke and death risk in patients with SSS after pacemaker implantation. The addition of LAD and NT-proBNP to the CHA2DS2-VASc score improved its predictive power for stroke and death, respectively, in this patient cohort. Future prospective studies are warranted to validate the benefit of adding LAD and NT-proBNP to the CHA2DS2-VASc score for predicting stroke and death risk in non-AF populations.
Isotopic Effects on Stereodynamics of the C~+ + H_2→ CH~+ + H Reaction

The effects of isotope substitution on steteodynamic properties for the reactions C~+ + H_2/HD/HT→ CH+ + H/D/T have been studied applying a quasi classical trajectory method occurring on the new ground state CH_2~+ potential energy surface [J. Chem. Phys. 142 (2015) 124302]. In the center of mass coordinates applying the quasi classical trajectory method to investigate the orientation and the aligriment of the product molecule. Differential cross section and three angle distribution functions P(θ_r),P(ф_r), P(θ_r) ф_r) on the potential energy surface that fixed the collision energy with a value is 40 kcal/mol have been studied. The isotope effect beeotnes more and more important with the reagent molecules H2 changing into HD and HT. P(θ_r, ф_r) as the joint probability density function of both polar angles θ_r and ф_r, which can illustrate more detailed dynamics information. The isotope effect is obvious influence on the properties of stereodynamics in the reactions of C~+ + H_2/HD/HT→CH+ + H/D/T.
A Turn-On Fluorescence Chemosensor for Cyanide in Aqueous Media Based on a Nucleophilic Addition Reaction

We synthesized a new cyanide (CN~-) chemosensor CX based on a nucleophilic addition reaction prompted by cyanide ion, which could be used for highly selective and sensitive fluorescence turn-on detection of cyanide in aqueous media.The CX showed selective fluorescence recognition for CN~-, the miscellaneous competitive anions(F~-, C1~-, Br~-, I~-, AcO~-, H_2PO_4~-, HSC_4~-, CIO_4~-, S~(2-), PO_4~(3-), CO_3~(2-) and SCN~-) did not lead to any significant interference.The detection limit of the sensor towards CN~-is 1.15 × 10~(-7) mol·L~(-1).The sensor has been successfully applied to estimate the cyanide ion in seeds of cherries.Test strips based on CX were fabricated, which could be used as a convenient and efficient CN~- test kit to detect CN~- in aqueous solution for “in-the-field"measurement.
女性盆底功能康复-女性盆底康复的方法及技术

女性盆底康复(pelvic floor rehabilitation)指在整体理论指导下施行对盆底支持结构的训练、加强及功能恢复。以肛提肌为主的盆底肌肉群是最主要的盆底支持结构,盆底肌肉锻炼(pelvic floor muscle training, PFMT)治疗盆底功能障碍(pelvic floor dysfunction, PFD)早有记载,但直至1948年,美国Arnold Kegel提出“凯格尔训练法”并报道利用此法成功治疗女性尿失禁,基于PFMT理念的盆底康复才得以形成理论而逐渐被推广。此后,随着对盆底肌电研究的深入和电子技术的发展,快速成为结合机械设备和物理因子的现代盆底康复。就其康复方法及技术而言,无论是通过单纯的PFMT,或结合多种仪器设备和物理因子的主动或被动盆底肌训练方法,还是生物反馈、电刺激、磁刺激等技术的联合应用,都是PFD非手术治疗的有效手段,受到越来越多的A级证据的支持,且因其具有安全、方便和经济等优点而越来越受临床所重视。
耻骨后路径阴道无张力尿道中段悬吊术治疗女性压力性尿失禁研究进展

查阅近5年国内外已公开发表的文献中耻骨后路径阴道无张力尿道中段悬吊带(TVT)术相关的文献,总结TVT术治疗女性压力性尿失禁的疗效、对患者生活及性生活质量影响和术中、术后并发症及其处理的研究进展。TVT术主观治愈率84.0%~95.2%,客观治愈率57.0%~ 95.2%,在一定程度上能提高患者的生活质量及性生活质量。常见的并发症有膀胱穿孔、尿潴留/尿排空障碍、膀胱过度活动症及吊带侵蚀等,对其应采用适当的处理方式。TVT术治疗女性压力性尿失禁是一种微创、并发症少、长期有效的方法。
太行山北缘中元古界发现泥火山群

地震是地球内部结构失衡、应力突然释放并产生巨大破坏的突变事件。现代地震及其触发的滑坡、泥石流和海啸等会给人类带来巨大灾害。规模较大的古地震事件往往会在未完全固结的软沉积物中留下液化或其他变形记录,形成所谓的“震积岩(Seismite)”。古地震记录可提供特定地区地史时期古地震活动的长周期记录,为恢复区域构造演化过程、确定古断裂发生时间与活动史提供背景支撑。还可以利用地震事件沉积的突发性与分布的广泛性等特点进行区域地层对比。