mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Coastal protection using building with nature concept: A case study from Chongming Dongtan Shoal, China

R R w R R c With climate change and rising sea levels, the coastal zone’s flood risk is deteriorating. Previous researches have shown a gradually degrading capacity of traditional hard engineering structures (e.g., seawall, dikes) on flood mitigation due to problems such as land subsidence and insufficient maintenance. To remedy the defects, the “building with nature concept” for coastal protection with saltmarshes was examined by combining field measurements and numerical simulations. The advantages of saltmarsh over traditional seawall on flood protection was demonstrated from the perspective of both flood area mitigation and economic gain, based on scenario simulations. Results show that tidal wetlands are essential in mitigating significant wave heights (Hs) and current velocities even during storm conditions. The storm wave and current velocity reduction ratio (and) by saltmarshes on Chongming Dongtan Shoal (CMDS) during Typhoon 9711 is approximately 11% and 51%, respectively. The wave and current mitigation by Scirpus mariqueter are more efficient than Spartina alterniflora and Phragmites australis during measurements in 2010, which were approximately 0.3 m and 0.2 m/s, 0.125 m and 0.155 m/s, 0.086 m and 0.128 m/s per kilometer width, respectively. The summer saltmarsh area 54.2 km~2 on CMDS protects approximately 32 km~2 land area behind the seawall from being flooded, equivalent to the seawall heightening of approximately 0.42 m on equivalent flood mitigation. The performance of cost-and-benefit analysis shows a relatively higher (by 3%–7%) net present value (NPV) and a higher (by 1.5 times) benefit-cost ratio (BC) of nature-based solution (i.e., saltmarsh restoration) compared with traditional hard engineering solution (i.e., seawall construction). Thus, building seawall with nature, such as a hybrid flood protection measure, should be implemented in the future coastal redesign and maintenance.
Optical properties and surface energy flux of spring fast ice in the Arctic

Over the past decades, sea ice in the polar regions has been significantly affecting local and even hemispheric climate through a positive ice albedo feedback mechanism. The role of fast ice, as opposed to drift ice, has not been well-studied due to its relatively small coverage over the earth. In this paper, the optical properties and surface energy balance of land fast ice in spring are studied using in situ observations in Barrow, Alaska. The results show that the albedo of the fast ice varied between 0.57 and 0.85 while the transmittance increased from 1.3×10~(-3) to 4.1×10~(-3) during the observation period. Snowfall and air temperature affected the albedo and absorbance of sea ice, but the transmittance had no obvious relationship with precipitation or snow cover. Net solar shortwave radiation contributes to the surface energy balance with a positive 99.2% of the incident flux, with sensible heat flux for the remaining 0.8%. Meanwhile, the ice surface loses energy through the net longwave radiation by 18.7% of the total emission, while the latent heat flux accounts for only 0.1%. Heat conduction is also an important factor in the overall energy budget of sea ice, contributing 81.2% of the energy loss. Results of the radiative transfer model reveal that the spectral transmittance of the fast ice is determined by the thickness of snow and sea ice as well as the amount of inclusions. As major inclusions, the ice biota and particulates have a significant influence on the magnitude and distribution of the spectral transmittance. Based on the radiative transfer model, concentrations of chlorophyll and particulate in the fast ice are estimated at 5.51 mg/m~2 and 95.79 g/m~2, which are typical values in the spring in Barrow.
Mineralogy, geochemistry, and sulfur isotope characteristics of sediment-hosted hydrothermal sulfide minerals from the southern Okinawa Trough

Studies of the mineralogy and sulfur isotope composition of sediment-hosted hydrothermal sulfide minerals in cores are important for understanding the seafloor mineralization environment and material source and reconstructing the hydrothermal history. However, the source of ore-forming materials and the history of hydrothermal activity in the southern Okinawa Trough (SOT) remain unclear. Here, the mineralogy and sulfur isotope characteristics of sulfides from gravity core HOBAB4-S2, collected between the Yonaguni Knoll IV hydrothermal field (HF) and the Tangyin HF, was investigated. Enrichments in Zn (up to 321×10~(-6)), Cu (up to 73.7×10~(-6)), and Pb (up to 160×10~(-6)) and the presence of pyrite, galena, pyrrhotite and minor sphalerite and chalcopyrite provide evidence for the input of hydrothermal materials into the sediments. The pyrite morphologies include disseminated cubic, pentagonal dodecahedron, and framboidal forms. Except for minor framboidal pyrite, euhedral pyrite from core HOBAB4-S2 is mainly of hydrothermal origin with Co/Ni ratios >1 and S/Fe atomic ratios <2 in the Cu-Zn-Pb-rich layers. The occurrences of hexagonal pyrrhotite, high-Co (up to 0.17%) pyrite and high-Fe sphalerite indicate that the hydrothermal precipitates formed at medium-high temperatures and low-sulfur fugacity (fS_2) environments. The δ~(34)S values of sulfides (0.21‰–3.45‰) with low- fS_2 mineral assemblages (e.g., pyrrhotite ± high-Fe sphalerite) in the core are significantly lower than those of magmatic rocks and seawater, indicating possible incorporation of previously formed biogenic sulfur in the sediment. Combined with the age model of the core, it is suggested that hydrothermal activity likely began in the Tangyin HF before AD 1 445–1 483 and that at least three active episodes may have occurred since then.
经腹腹膜前腹腔镜腹股沟疝修补术治疗腹股沟复发疝

目的:探讨经腹腹膜前腹腔镜腹股沟疝修补术(TAPP)治疗腹股沟复发疝的临床应用价值。方法:回顾性分析4年间收治的腹股沟复发疝经腹腔腹膜前腹腔镜疝修补术患者21例临床资料。结果:21例复发疝均成功完成TAPP手术,无中转手术。术后2例出现尿潴留(9.5%),1例出现阴囊少量积液(4.8%)。术后均2~3d出院,随访6~24个月,无1例复发。结论:TAPP安全有效;该术式具有创伤小、操作简单、恢复快、住院时间短、复发率低等优势。值得推广应用于复发疝。
多层螺旋CT对腮腺基底细胞腺瘤的诊断价值

腮腺基底细胞腺瘤是一种少见的来源于涎腺上皮的良性肿瘤,好发于腮腺。由Leinsasser和Klein于1967年首先提出并将其列为涎腺肿瘤的一个类型,它是单形性腺瘤的一种特殊亚型,是一种以基底样细胞构成、有清晰基底膜样结构的良性肿瘤,80%发生在腮腺,其次为颌下腺。组织学上根据细胞生长方式分为实性型、小管型、网状型和膜型。腮腺基底细胞腺瘤术前常易误诊为其他良性肿瘤。本研究回顾性分析经手术病理证实的14例腮腺基底细胞腺瘤的多层螺旋CT(MSCT)表现,以提高该病的诊断准确性。
神经白塞病1例报告及文献复习

白塞病为一种原因不明的以细小血管炎为病理基础主要累及皮肤粘膜的慢性进行性多发性、多系统损害疾病,当累及神经系统时称为神经白塞氏病(Neuro-Behcet’s disease,NBD),中枢神经受累比外周神经受累多见,神经受累的部位不同,其临床表现亦不同。
阻塞性睡眠呼吸暂停综合征致缺血性脑卒中的发病机制

近年来,越来越多的证据显示缺血性脑卒中的患者常合并有阻塞性睡眠呼吸暂停综合征(obstructive sleep apnea syn-drome,OSAS),这使得OSAS与缺血性脑卒中的关系备受关注。本研究通过对OSAS与超敏C反应蛋白(high sensitive Creactive protein,hs-CRP)、纤维蛋白原(fibrinogen,Fib)、低密度脂蛋白胆固醇(low density lipoprotein cholesterin,LDL-C)、颈动脉内-中膜厚度(intima-media thickness,IMT)等指标进行相关性研究,以进一步明确OSAS 与缺血性脑卒中的关系和发病机制,希望对临床预防和治疗提供依据。
水中痕量含氯除草剂的在线富集及自动样品净化的简单快速方法

在线富集分析了酸化水中的8种含氯除草剂:毒莠定,草灭平,麦草畏,灭草松,2,4-D,滴丙酸,2,4,5,-T,P三氟羧草醚.这些除草剂可以在少于2 mL的水中进行分析,运行时间在15 min以内.使用Agilent ZORBAX SB-Aq色谱柱用于捕获分析物,Agilent ZORBAX SB-C18色谱柱用于分析,一个两位六通阀用于色谱柱切换.通过毒莠定和滴丙酸的标准曲线,从而验证了水中这些农药定量方法的系统适应性.自动样品净化省去了样品制备时繁杂的固相萃取(SPE)程序.Agilent 1260 Infinity LC系统的灵敏度可以达到EPA(美国环境保护署)方法的检出限要求,而且只需使用少于EPA官方方法所要求的样品量的十分之一.
加速溶剂萃取-固相萃取净化-色谱法测定土壤中的多环芳烃和有机氯

多环芳烃(PAHs)和有机氯农药(OCPs)是一类具有突出“三致”(致癌、致畸、致突变)作用和环境持久性、生物蓄积性、难降解性的亲脂类疏水性化合物,对人类健康造成严重影响.目前测定PAHs和OCPs的方法有HPLC、GC-FID、GC-ECD、GC-MS法.本文采用加速溶剂萃取(ASE),弗罗里硅土固相柱(SPE)净化,同时提取土壤中PAHs和OCPs,缩短了前处理时间,提高了净化效率.分别采用高效液相色谱-荧光-紫外检测器联用测定土壤中的PAHs,气相色谱-电子捕获检测器测定土壤中的OCPs,准确度灵敏度较高,方法简便,适用于土壤中批量样品的分析.
Improved Synthesis and Structure of 3-Carboxy-2-pyrazinecarbohydroxamic Acid

3-Carboxy-2-pyrazinehydroxamic acid was prepared by a one pot reaction starting from pyrazine-2,3-dicarboxylic anhydride with a high yield, and characterized by IR, Mass spec- trum, ~1H NMR and ~(13)C NMR spectra and single-crystal X-ray diffraction. It crystallizes in triclinic, space group P1 with a = 4.8659(10), b = 7.4233(15), c = 11.602(2) A, α = 96.904(2), β = 92.422(3), γ = 107.454(2)o, V = 395.51(14) A~3, Z = 2, D_c = 1.689 g/cm~3, F(000) = 208, μ(MoKα) = 0.149 mm~(-1), the final R = 0.0473 and wR = 0.1306 for 2853 observed reflections (I > 2σ(I)). A three-dimensional framework was assembled through intermolecular hydrogen bonding between water and 3-carboxy- 2-pyrazine-carbohydroxamic acid molecules.
Study on the Adsorption Characteristics of Inorganic Activated Charcoal Gel on Formaldehyde

In this paper, the powdered activated carbon is taken as the main raw material to develop a new material of inorganic activated charcoal gel by using silicate cement as the gelling agent. The micro-structure of this material is characterized by XRD, BET, SEM, EDS and so on; and the adsorption and cyclic regeneration characteristics of formaldehyde on the material are primarily studied. The experimental results show that this material is an adsorbent on the basis of micropores distributed between 0.60–1.12 nm, with specific surface area of 452.86 m~2/g, average pore size of 2.62 nm and total pore space of 0.30 m~3/g. The samples have excellent formaldehyde adsorption ability with saturation adsorption of 268.00 mg/g; after 20 times of cyclic adsorption and desorption, the formaldehyde adsorption rate of the samples can remain 49% of the original value, showing good cyclic regeneration of the samples.
A New Two-dimensional Zinc Coordination Polymer Constructed by 1,3-Bis(4-pyridyl)-propane and Terephthalate: Synthesis and Crystal Structure

A new zinc coordination polymer, [Zn_2(bpp)(tpa)_2H_2O] 1 (bpp = 1,3-bis(4-pyridyl)- propane and tpa = terephthalate) has been hydrothermally synthesized and characterized by elemental analysis, IR and single-crystal X-ray diffraction. X-ray crystal structure analysis reveals that complex 1 crystallizes in monoclinic, space group P2/c with a = 18.348(2), b = 10.9080(14), c = 13.7924(18) A, β = 98.156(2)°, V = 2732.5(6) A~3, Z = 4, C_(29)H_(24)N_2O_9Zn_2, M_r = 675.24, Z = 4, F(000) = 1376, D_c = 1.641 mg/m~3, μ = 1.815 mm-1, the final R = 0.0443 and wR = 0.0769 for 2715 observed reflections (I > 2σ(I)). The title complex exhibits a two-dimensional (4, 4) sheet structure which is further stacked through face-to-face π-π interactions between the monodentately coordinated pyridine ring of bpp ligand and the phenyl ring of terephthalate ligand to form a 3-dimensional supramolecular structure. Thermogravimetric analyses show that the host framework of the complex is thermally stable up to ca. 400 ℃.
数字城市建设中GIS数据跨服务器无缝漫游

针对当前数字城市建设中跨服务器数据调度的问题,以NewMap在城市三维场景数据跨服务器动态调度的应用为例,探讨基于服务器独立配置的数据跨服务器动态调度机制。通过Server Layer的引入实现数据跨服务器调度中对未知服务器节点的自主查询与数据加载,以及基于Server Tree的服务器节点整体维护。最后通过试验验证该机制在跨服务器数据动态调度中的可行性及有效性。
基于地理国情监测的城市扩张分析研究

以地理空间数据、社会经济人文数据为数据源,借助RS、GIS技术对郑、汴一体化区域3个城市48年间8个监测年点建成区内的建成区范围、道路、绿化、建筑物用地、人口、GDP等监测要素进行获取和统计,并利用相关模型和指数,结合区域发展规划,对监测对象的发展趋势进行分析和研究,揭示其内在动力,为城市发展提供技术和数据支持。
数字城市到智慧城市的思考与探索

首先综述构建权威、唯一、通用数字城市地理空间框架的必要性,然后详细介绍我国数字城市建设的总体思路、进展情况、发挥的作用及产生的影响。并针对时代发展、技术进步和需求变化,论述当前地理空间框架面临的全新发展机遇和挑战,以及当前存在的问题,明确指出智慧城市阶段地理空间框架的建设目标与内容,展望下一步技术突破的方向。
中国海岸带管理空间基准的构建

针对海岸带管理空间基准服务需求的特点,讨论陆海空间基准现状及存在的问题;提出改革现有条块分割管理体制,建立陆海一体化CGCS2000基准服务体系和机制的构想;创建一种基于CORS网的海岸带管理陆海一体化三维空间基准模型,可为海岸带信息化管理和可持续发展提供支撑。
基于高差分析的点云数据提取矿区地表沉陷信息方法

机载LiDAR技术能够快速获取整个矿区地表空间位置及垂直相对位置的动态变化量,观测结果更为全面、直观,从而可以获得整个矿区地表开采沉陷分布与移动下沉情况。从点云数据滤波入手,对获取的鹤壁矿区两期点云数据提取的DEM作差值计算,得出该段时期内地表的垂直位移量,然后通过设置高差阈值和面积阈值,并采用基于高差分析的方法,提取地表沉陷信息。试验结果表明,该方法提取的沉陷面积精度能达到94.75%,可在中小尺度上对矿区开采沉陷进行监测。
Effect of Basicity on Deoxidation Capability of Refining Slag

Mass action concentration (activity) calculation model was used to analyze the variation rule of mass action concentrations of slag compositions with basicity changing, and the effect of basicity on deoxidation capability and control of spinel and globular inclusions was investigated theoretically. From the calculation and experimental results, it was found that with the increase of basicity, the mass action concentration of Al_2O_3 and SiO_2 decreases, while the mass action concentration of FeO and MgO increases at first and then decreases.Slag basicity below 3 to 4 would help to control spinel inclusions formation, and higher basicity improves formation of globular inclusions. Slag with basicity under 2 can effectively control the formation of globular inclusions. Deoxidation capability of slag increases with the increase of basicity, and slag with basicity about 4 could almost reach the maximum deoxidation capability. In order to smelt low oxygen steel with globular inclusions controlled, refining slag basicity should be controlled at about 4.
TRMM卫星升轨对热带地区气候尺度降水探测的影响

1997年发射升空的热带测雨卫星(tropical rainfall measuring mission,简称TRMM)距今已经稳定运行十余年,其上搭载的首部星载主动式测雨雷达(precipitation radar,简称PR)收集了多年高信度的降水探测资料,这些资料现已被广泛应用于全球气候和水文等研究领域.然而,为延长TRMM卫星使用年限,2001年8月TRMM卫星轨道高度由350km被调升至402.5km,这使得PR观测参数发生变化,直接影响PR数据的时间一致性.因此,需要对该数据进行订正,以消除升轨造成的影响,确保其可正确应用于气候尺度的研究.相关研究已经发现,TRMM卫星升轨后,PR探测到的日均/月均降水量都有所下降,但降水频次和降水强度对降水量变化的贡献并不清楚,本研究试图澄清这一问题.利用TRMM卫星升轨前(1998~2001年)和升轨后(2002~2005年)夏季热带地区(15°S~15°N)的PR轨道资料2A25(第6版),分析了升轨前后PR探测不同类型降水的降水频率与降水强度的变化特征及其原因,并尝试对升轨后数据进行订正,以获得热带地区真实的降水年际变化特征.
锂离子电池硅酸盐正极材料的研究进展

聚阴离子型正硅酸盐材料由于其具有较高的理论容量、高安全性、环境友好和价格低廉等特点,被认为是下一代锂离子电池理想的正极材料之一.本文介绍了这种材料的结构及性能特点,并针对材料存在的电导率低、稳定性差、阳离子易混排等缺陷,从优化合成方法入手,综述了不同合成方法以及烧结温度对材料性能的影响,探讨了碳的包覆及复合、金属元素的掺杂以及特殊的介孔结构对材料物化性能的影响,提出了锂离子电池硅酸盐正极材料未来的研究重点.
近50年来天山乌鲁木齐河源1号冰川平衡线高度对气候变化的响应

冰川平衡线高度是反映气候变化最直接的参数之一.基于1959~2008年天山乌鲁木齐河源1号冰川平衡线高度观测资料和河源区气候变化资料,建立了过去50年冰川平衡线高度与夏季气温以及降水量变化之间的关系模型,并揭示出暖季气温是该冰川平衡线高度变化的主导气候因素.1号冰川平衡线高度在1959~2008年时期呈上升总趋势,并在2008年达到最高值(海拔4168m),接近该冰川的顶部.近50年来该冰川平衡线高度上升了约108m.对1号冰川平衡线高度的气候敏感性研究表明,如果暖季(5~8月)气温升高(降低)1℃,那么冰川平衡线高度将上升(下降)约61.7m;如果年降水量增加(减少)10%,那么冰川平衡线高度将下降(上升)约13.1m.如果河源区气候保持过去50年的平均升温趋势(斜率为0.019℃/a),平衡线将以2.16m/a的速率继续升高;如以2000~2008年的速率升温(斜率为0.059℃/a),平衡线高度将以6.5m/a的速度上升直至达到稳定态.冰川平衡线的升高,使得积累区面积比率减小,而消融区面积比率增加,将对气候变暖背景下冰川的进一步消融产生重要影响.
Recent advances in understanding the key catalyst factors for Fischer-Tropsch synthesis

Catalytic conversion of synthesis gas (CO+H_2) into hydrocarbons, also known as Fischer-Tropsch (FT) synthesis, is a crucial reaction for the transformation of non-petroleum carbon resources such as coal, natural gas, shale gas, coal-bed gas and biogas, as well as biomass into liquid fuels and chemicals. Many factors can influence the catalytic behavior of a FT catalyst. This review highlights recent advances in understanding some key catalyst factors, including the chemical state of active phases, the promoters, the size and the microenvironment of active phase, which determine the CO conversion activity and the product selectivity, particularly the selectivity to C_(5+) hydrocarbons.
身心灵健康团体辅导对养老院老人幸福感与心理健康的干预研究

身心灵健康团体辅导始于20世纪90年代初,为香港大学陈丽云教授所创立,它将西方的团体辅导形式与东方的治疗思想与文化背景相融合,强调整体的、系统的全人健康观念,具有鲜明的本土化特征。在干预理念上大量融人中国传统文化的资源以及中医学的整体观,如道家的“顺应自然、养生遵道”、儒家的“感而遂通天下”、佛家的“慈悲喜舍”、中医的“形神合一、互为体用”等,在干预模式上采用冥想、气功、情绪调节、生命价值探寻等多种干预模式相结合的方式,从身体、情绪、精神灵性三方面综合介入,使身心灵三者平衡、健康地发展。该模式曾应用于癌症病人、社交焦虑大学生、不孕妇女等团体,取得了较好的效果,跨文化研究亦初见端倪,但将该辅导模式应用于老年人在国内外尚属首次。研究表明:与居家老人相比,养老院老人有更多地抑郁、孤独、焦虑、强迫、敌对等心理健康问题,人际交往贫乏,生活幸福感指数偏低,心理状况不容乐观。本研究旨在运用身心灵健康团体辅导对养老院老人的幸福感与心理健康状况进行干预,以观察其干预效果。
Partial frequency band match filtering based on highsensitivity data: method and applications

During seismic data acquisition, a high-sensitivity geophone with a high inherent frequency can increase high frequency energy by suppressing low frequency signals. This could cause a worse response at low frequencies. If the advantages of high-sensitivity data and conventional data are combined, the effective bandwidth will be broadened. Considering this, we propose a partial frequency band match filtering method which can combine the advantages of both high frequency and conventional frequency ranges. By introducing Ricker wavelets with different dominant frequencies and amplitudes, we established a theoretical model which possesses characteristics of both types of seismic data and demonstrates the feasibility of the partial frequency band match filtering method. A test using single shot records shows the effectiveness of this method for widening the effective frequency band.
盐酸帕罗西汀致阴茎异常勃起一例

阴茎异常勃起是指在无性刺激的情况下,阴茎持续勃起超过6h,不因性活动而减轻。其病因较多,包括血液系统疾病、代谢性疾病、外伤、肿瘤、神经系统疾病、药物及昆虫咬伤等;其中药物因素是其常见的病因。多数抗抑郁药均可引起阴茎异常勃起,其确切机制尚不明确,普遍认为与其阻滞a_1肾上腺素能受体有关。盐酸帕罗西汀是一种选择性5-羟色胺再摄取抑制剂,与a_1受体也有较低的亲和性。本病例中,在用药第20天出现阴茎异常勃起,持续时间超过24 h,临床罕见。其机制估计与其阻滞a_1肾上腺素能受体相关;另外也可能与老年人对药物代谢慢导致药物蓄积和血药浓度相关。临床应用帕罗西汀片时应引起注意,尤其是用于老年患者,尽可能低剂量治疗。
腹膜后巨大脂肪肉瘤术后复发1例

综上所述,对于一个已失去手术机会的腹膜后巨大脂肪肉瘤的病人,将各种治疗方法相结合,给予综合性地个体化治疗对病人来不失为一个积极地对策,目的在于尽可能地减轻症状,提高生存质量,同时尽可能延长生存期。对于少部分病人,可根据治疗效果再争取做全切除或部分切除的2次手术机会。
荷叶饮加减联合针刺治疗单纯性肥胖症98例

肥胖是高血压、动脉硬化、冠心病、糖尿病等疾病的重要发病基础,目前国内外对肥胖症的防治采用了各种各样的减肥疗法,如药物减肥、手术减肥、节制饮食减肥、体育运动减肥等。但这些减肥疗法有的副作用大,有的效果不理想。本文采用针刺和中药结合的方法治疗单纯性肥胖病患者,分析其效果。
恶性肿瘤患者的心理状态与康复对策

恶性肿瘤是严重威胁人类生命的疾病。由于化疗的长期性、疾病的严重性,容易使患者产生心理上的抑郁情绪,不配合治疗,导致疾病恶化,影响患者的生存质量。手术、化疗、放疗等治疗手段均可引起不同程度的负性情绪反应,如焦虑、抑郁等,它严重地威胁着患者的身心健康。心理状态与躯体疾病的病程和预后有明显关系,研究患者的心理,创造条件使患者在治疗过程中处于最佳的生理、心理状态,对患者的康复十分重要。本研究旨在了解肿瘤患者的心理状态,找出预防和减轻焦虑、抑郁等心理状况的有效措施,并有针对性地进行康复干预,以提高患者的治愈率和生存质量。
高校离退休教师主观幸福感及与人格特质的关系

目的了解并探讨目前高校离退休教师主观幸福感现状及与人格特质的关系,为改善老年人心理健康及生活质量提供理论依据。方法使用艾森克人格问卷和纽芬兰纪念大学幸福度量表进行问卷调查。结果外向性维度与幸福感正性因子存在正相关,不同人格类型被试主观幸福感各因子得分轮廓不平行,除负性情感以外,四种类型组间差别均有统计学意义。结论外向性人格是影响老年人主观幸福感的重要因素,外向稳定型个体的幸福感水平最高。
Phase Equilibria of Quaternary System NaCl-NaBr-Na_2B_4O_7-H_2O at 348 K

The phase equilibria of quaternary system NaCl-NaBr-Na_2B_4O_7-H_2O at 348 K were studied by the isothermal equilibrium method. The solubilities and densities of the equilibrium solution were determined. According to the experimental data, the phase diagram, density-composition diagrams and water content diagram of the quaternary system at 348 K were plotted respectively. And the phase diagram consists of one univariant curve, two crystallization fields and without any invariant point of the quaternary system. The equilibrium solid phases of the two crystallization fields were Na(Cl, Br) and Na_2B_4O_7·5H_2O. The experimental results show that the quaternary system contained solid solution. The densities of the solution decrease with increasing NaCl concentration and increase with increasing NaBr concentration.
滇型杂交粳稻新组合滇优37

滇优37是云南农业大学稻作研究所用滇Ⅰ型优质不育系DHC-10A与恢复系滇农R-3配组育成的滇型杂交粳稻新组合。该组合产量高、米质较优、抗性好、适应性广,于2012年8月通过云南省农作物品种审定。
抗稻瘟病两系杂交稻新组合Y两优143

Y两优143是国家杂交水稻工程技术研究中心用Y58S与P143配组育成的籼型抗稻瘟病两系杂交稻新组合,2012年通过广东省审定,具有株叶形态好、分蘖力强、穗大粒多、抗稻瘟病等特点。介绍了其选育过程及特征特性,并提出了栽培及制种技术要点。
两优1128在福建永安试种表现及高产栽培技术

两优1128是由湖南杂交水稻研究中心用P88S与R1128配制育成的两系杂交稻新组合,2011年在福建永安市试验种植,表现茎秆粗壮、耐肥抗倒能力强、分蘖力强、大穗大粒、高产等特点。总结了其种植表现及高产栽培技术。
两系杂交早稻新组合株两优4024高产制种技术

株两优4024是湖南农业大学用株洲市农业科学研究所选育的广亲和低温敏两用核不育系株1S与株叶形态优良、配合力好、抗逆性强的优质早稻父本4024配组育成的两系杂交早稻新组合,2009年通过湖南省和国家农作物品种审定委员会审定。介绍了株两优4024亲本特征特性,结合在江华多年制种实践,总结了其高产制种技术。
罗哌卡因复合吗啡蛛网膜下腔麻醉用于下肢骨科手术的临床观察

下肢手术常采用蛛网膜下腔麻醉,罗哌卡因是常用的局部麻醉药;吗啡是经典的阿片类镇痛药,常用于术后镇痛。本研究观察采用罗哌卡因复合吗啡蛛网膜下腔麻醉用于下肢骨科手术及术后镇痛的效果。
胸主动脉钝性创伤的诊治进展

胸主动脉钝性创伤(blunt traumatic thoracic aortic injury,BTTAI)病情凶险,死亡率极高。虽然BTTAI少见(交通伤中发生率<1%),但却是仅次于颅脑外伤的第二大交通事故死因。Vesalius在1557年已首次报告BTTAI导致的主动脉破裂。据尸体解剖统计,BTTAI的现场死亡率高达69%~85%。若缺乏有效的治疗,30%~50%幸存者会在伤后24 h内死亡,而90%的患者将在伤后1个月内死于主动脉破裂。近年来,随着对BTTAI形成机制的深入研究及影像学诊断技术的发展,降压和脊髓保护的治疗理念越来越受到重视,手术方式也转变为以胸主动脉血管腔内修复(thoracic endovascular aortic repair,TEVAR)为主。虽然欧美已有较大规模BTTAI临床分析研究,但国内仍仅限于少量小样本的病例报道。因此,笔者就目前BTTAI相关临床研究进展做简要综述。
Empirical correlations for predicting the self-leveling behavior of debris bed

Studies on the self-leveling behavior of debris bed are crucial for the assessment of core-disruptive accident(CDA)occurred in sodium-cooled fast reactors(SFR).To clarify this behavior over a comparatively wider range of gas velocities,a series of experiments were performed by injecting nitrogen gas uniformly from a pool bottom.Current experiments were conducted in a cylindrical tank,in which water,nitrogen gas and different kinds of solid particles,simulate the coolant,vapor(generated by coolant boiling)and fuel debris,respectively.Based on the quantitative data obtained(mainly the time variation of bed inclination angle),with the help of dimensional analysis technique,a set of empirical correlations to predict the self-leveling development depending on particle size,particle density and gas injection velocity was proposed and discussed.It was seen that good agreement could be obtained between the calculated and experimental values.Rationality of the correlations was further confirmed through detailed analyses of the effects of experimental parameters such as particle size,particle density,gas flow rate and boiling mode.In order to facilitate future analyses and simulations of CDAs in SFRs,the obtained results in this work will be utilized for the validations of an advanced fast reactor safety analysis code.
杂交晚稻新组合五丰优15的选育与应用

五丰优15是江西省天仁种业有限公司用广东省农科院水稻所选育的不育系五丰A与自选的恢复系R15配组育成的杂交晚稻新组合。具有高产、稳产、米质较好、早熟等特点。五丰优15参加江西省2011年生产试验,平均产量7534.5 kg/hm~2,比对照岳优9113增产4.6%。于2012年通过江西省农作物品种审定委员会审定,审定编号:赣审稻2012011。
甘蓝型杂交油菜新品种卓油11号的选育

利用双低隐性核不育系56 A与双低恢复系8020 R配制新品种(卓信056)卓油11号,于2008~2010年通过贵州省两年油菜区试和生产试验。区试和生产试验中,表现出综合性状好,丰产性好,稳产性好,适应性较广,熟期适中,长势强,整齐度好的特点。平均全生育期为216.8 d,比对照油研10号早熟1.8d,自然病圃抗病性鉴定试验中其菌核病的病株率30%,病情指数17.19。经农业部油料及其制品质量检测中心品质分析芥酸、硫甙、含油量、蛋白质含量分别为0.2%、14.23μmol/ g、43.02%、23.54%。
不同培养基对假酸浆种子无菌萌发的影响

以假酸浆种子为实验材料,采用正交实验法设计假酸浆种子萌发培养基,研究假酸浆种子在MS,1/2 MS,1/4 MS基本培养基及NAA和6-BA不同组合下的发芽率。结果表明:在1/4 MS+6-BA/L+蔗糖30mg/L,pH=5.8的培养基中,种子的萌发率最高。该实验初步建立了假酸浆种子的无菌萌发体系,为假酸浆资源的持续利用奠定了基础。
中国杂交水稻种业的发展和展望

杂交水稻是伟大的发明,是中国对世界的重大贡献。杂交水稻的发展促进了中国种业的发展。中国杂交水稻种业经过多年的发展,种业主体多元化格局已基本形成,竞争日趋激烈,骨干种业实力不断增强,种子市场空前繁荣。但杂交水稻种业的发展仍然存在缺乏新品种突破性和市场管理能力不强等诸多实际问题。整合组建“育繁推一体化”的种业巨头,积极稳妥地推进商业化育种进程,把握水稻功能基因专利,突破现代机械化制种技术,以杂交水稻优势抢占国际水稻种业市场高地,将是杂交水稻种业未来的发展方向。
主动脉夹层腔内覆膜支架置入术血流动力学计算机分析

主动脉夹层是主动脉壁在一系列可能外因的作用下导致主动脉内膜撕裂,血液由内膜撕裂口进人造成主动脉中层沿长轴分离的一种病理状态。胸主动脉夹层动脉瘤分为累及升主动脉的A型和起源于胸降主动脉且未累及升主动脉的B型。Stanford B型主动脉夹层的治疗方案尚存在争论,而不同治疗手段造成血管内血流动力学改变差异,以及对血管重构和预后造成的影响还有待深入研究。目前,现有的计算流体力学分析软件已能构建主动脉夹层血流动力学模型,研究显示,该技术能很好的反映真实夹层动脉内血流流场特点,故可将该技术应用于分析、比较不同治疗方案后夹层血流动力学特点。现结合1例主动脉夹层患者情况分析报道此方法的应用。
纺织品中游离和水解甲醛含量测定能力验证

在纺织品后整理过程中使用的甲醛整理剂会损害人体健康、生态环境,因此,世界上很多国家已制定了相关的法律法规以限制纺织品中甲醛的残留量,并对进口纺织产品进行严格监督及检验,明令禁止不合格产品人境。我国强制性检测标准GB18401《国家纺织产品基本安全技术规范》中对纺织品中甲醛含量也有明确的限定界限及规定,检测结果不合格的纺织品不允许上市销售。由此可知,加强和提高纺织品中游离和水解甲醛含量的检测能力具有一定的实际意义。
多靶点酪氨酸激酶抑制剂的研究进展

目的:为多靶点酪氨酸激酶抑制剂在临床治疗肿瘤方面提供参考。方法:查阅国内外相关文献、网站,对已经上市的和正在进行Ⅲ期临床研究、具有良好前景的酪氨酸激酶抑制剂进行总结、分析。结果与结论:多靶点抑制剂在治疗方面优于单靶点抑制剂,多靶点联合阻断信号传导是肿瘤治疗和药物开发的新发展方向。多靶点酪氨酸激酶抑制剂作为新的靶向抗肿瘤药物,为临床治疗肿瘤提供了更多选择,特别是正在进行Ⅲ期临床试验的药物,其前景较好,值得关注。
儿童侵袭性真菌病的治疗

侵袭性真菌病(invasive fungal diseases,IFDs)是指真菌侵入机体深部组织、器官和(或)真菌血症波及全身,引起炎性反应及组织损伤的一大类感染性疾病。真菌在人体内可以呈携带,也可以是共生或寄生、定植。真菌感染是指真菌传播至人体并复制繁殖,其可以致病(临床或亚临床型),也可以不致病,但因感染而引起机体免疫反应,进而为我们所识别。所以,真菌病与真菌感染的概念是不同的,而IFDs更有别于一般真菌病。本文重点论述IFDs的抗真菌药物治疗。
Axonal loss and blood flow disturbances in the natural course of indirect traumatic optic neuropathy

Background Indirect traumatic optic neuropathy (TON) is an acute injury of the optic nerve associated with severe visual dysfunction, which may be a result of secondary mechanical injury and vascular disorder of the optic nerve due to trauma. We analyzed the natural course of axonal loss and blood flow disturbances in patients with indirect TON to find a possible therapeutic window. Methods A cohort of 54 patients with indirect TON recruited between October 2008 and October 2010 at Beijing Tongren Hospital was retrospectively analyzed. The patients were divided into no light perception group (NLP) and better than NLP (btNLP) group. Specifically, the thickness of the retinal nerve fiber layer (RNFL) measured by spectral domain optical coherence tomography (SD-OCT), and hemodynamic parameters of the ophthalmic artery (OA), central retinal artery (CRA) and posterior ciliary artery (PCA) were determined. Results Two weeks after injury, there was a statistically significant decrease in the thickness of RNFL in the btNLP group as compared with the fellow control eyes (P <0. 05). In contrast, in the NLP group, RNFL thickness slightly increased for 2 weeks following injury, then overtly reduced after 4 weeks (P <0. 05). Peak systolic velocity (PSV) of CRA was significantly decreased 4 weeks after injury (P <0. 05) in both the NLP group and btNLP group (P <0. 05). The thickness of RNFL in the NLP group was negatively correlated with PSV of CRA after 1 week of injury (P <0. 05, r=?0. 962). Conclusions SD-OCT is a useful supplement in detecting the axonal loss in TON. The dynamic change of the thickness of RNFL appears to correlate with the hemodynamic disturbances in the natural course of TON. The first 2 weeks following an injury is critical and should be considered as the therapeutic window for TON patients.