mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Application of AERMOD on near future air quality simulation under the latest national emission control policy of China: A case study on an industrial city

Air quality model can be an adequate tool for future air quality prediction, also atmospheric observations supporting and emission control strategies responders. The influence of emission control policy (emission reduction targets in the national "China’s 12th Five-Year Plan (2011-2015)") on the air quality in the near future over an important industrial city of China, Xuanwei in Yunnan Province, was studied by applying the AERMOD modeling system. First, our analysis demonstrated that the AERMOD modeling system could be used in the air quality simulation in the near future for SO_2 and NOx under average meteorology but not for PM_(10). Second, after evaluating the simulation results in 2008 and 2015, ambient concentration of SO_2, NOx and PM_(10) (only 2008) were all centered in the middle of simulation area where the emission sources concentrated, and it is probably because the air pollutions were source oriented. Last but not least, a better air quality condition will happen under the hypothesis that the average meteorological data can be used in near future simulation. However, there are still heavy polluted areas where ambient concentrations will exceed the air quality standard in near future. In spatial allocation, reduction effect of SO_2 is more significant than NOx in 2015 as the contribution of SO_2 from industry is more than NOx. These results inspired the regulatory applications of AERMOD modeling system in evaluating environmental pollutant control policy.
Comparison of UV/PDS and UV/H_2O_2 processes for the degradation of atenolol in water

UV/H_2O_2 and UV/peroxodisulfate (PDS) processes were adopted to degrade a typical β-blocker atenolol (ATL). The degradation efficiencies under various operational parameters (oxidant dosage, pH, HCO_3~-, humic acid (HA), NO_3~-, and Cl~-) were compared. Principal factor analysis was also performed with a statistical method for the two processes. It was found that increasing the specific dosage of the two peroxides ([peroxide]_0/[ATL]_0) ranging from 1:1 to 8:1 led to a faster degradation rate but also higher peroxide residual. Within the pH range 3-11, the optimum pH was 7 for the UV/PDS process and elevating pH benefitted the UV/H _2O_2 process. The presence of HCO_3~-, HA, and Cl adversely affected ATL oxidation in both processes. The NO_3~- concentration 1-3 mmol/L accelerated the destruction of ATL by the UV/PDS process, but further increase of NO_3~- concentration retarded the degradation process, contrary to the case in the UV/H_2O_2 process. The rank orders of effects caused by the six operational parameters were pH ≈ specific dosage > [HA]_0 > [NO_3~-]_0 > [HCO_3~-]_0 > [Cl~-]_0 for the UV/H_2O_2 process and specific dosage > pH > [HA]_0 > [NO_3~-]_0 > [HCO_3~-]_0 >[Cl~-]_0 for the UV/PDS process. The UV/PDS process was more sensitive to changes in operational parameters than the UV/H_2O_2 process but more efficient in ATL removal under the same conditions.
自知力缺损精神障碍患者知情同意权的法学理论与实务

患者的知情同意权(informed consent right),是指患者在就诊过程中有知悉自己的病情、医疗机构及其医务人员所制定的医疗方案、将要采取的措施、可能存在的风险等信息,并做出是否同意实施医疗方案、措施的权利。以逻辑学角度界定,确切的应称之为知情选择权(informed choice)。知情是患者的权力,即患者有权了解自己所罹患疾病的病情、转归、医疗措施、医疗风险、替代医疗方案、预后等信息。选择是过程,即患者在充分知悉上述信息后,权衡利弊,对医疗机构及其医务人员制定的医疗方案做出同意或不同意的选择。同意或不同意是选择的结果,是知情权的价值体现.
心房颤动(5)心房颤动起搏治疗(续4)

随着社会老龄化及高血压发病率增高等危险因素的变化,心房颤动(房颤)的发病率也逐渐增高。现今房颤治疗主要分为药物治疗、导管消融和起搏治疗。房颤患者的起搏治疗根据患者房颤的类型、病因等又分为抗心动过缓起搏治疗及心脏再同步治疗(CRT)。抗心动过缓起搏治疗:临床上除慢性房颤部分患者需起搏治疗外,以慢快综合征为常见,而快慢综合征需起搏治疗相对少见;CRT:在最新的2012欧洲心脏病学会(ESC)CRT治疗指南中,永久房颤患者的CRT治疗由IIa类降为IIb类适应证;在2012美国心脏病学学会基金会(ACCF)/美国心脏协会(AHA)/美国心律协会(HRS)对于2008年器械治疗指南的更新及中华医学会心电生理和起搏分会CRT指南(2010),为IIa类适应证;CRT并不能减少房颤负荷;CRT术后需关注双室起搏比率以提高反应率。
Weak Electrostatic Field Orientation of Cold KRb Molecules Enhanced by a Shaped Laser Pulse

We theoretically investigate the orientation of the cold KRb molecules in a weak electrostatic field assisted by a shaped laser pulse. The results show that the slow turn-on and rapid turn-off laser pulse can enhance the molecular orientation of KRb significantly, and a high degree of molecular orientation of more than 0.9 can be obtained when the electrostatic field is as low as 3 kV/cm. In addition, the influences of the electrostatic field strength and the parameters of the laser pulse are studied in detail.
电针颈三针用于颈型颈椎病治疗的临床观察

颈型颈椎病是以颈肩枕部酸痛、胀麻,颈部僵直、转动不利为主要特征,其发病率呈逐年升高趋势,并趋于年轻化。近年来,我们采用电针颈三针治疗颈型颈椎病取得了较好的疗效,现报导如下。
Specific grinding energy and surface roughness of nanoparticle jet minimum quantity lubrication in grinding

Nanoparticles with the anti-wear and friction reducing features were applied as cooling lubricant in the grinding fluid. Dry grinding, flood grinding, minimal quantity of lubrication (MQL), and nanoparticle jet MQL were used in the grinding experiments. The specific grinding energy of dry grinding, flood grinding and MQL were 84, 29.8, 45.5 J/mm~3, respectively. The specific grinding energy significantly decreased to 32.7 J/mm~3 in nanoparticle MQL. Compared with dry grinding, the surface roughness values of flood grinding, MQL, and nanoparticle jet MQL were significantly reduced with the surface topography profile values reduced by 11%, 2.5%, and 10%, respectively, and the ten point height of microcosmic unflatness values reduced by 1.5%, 0.5%, and 1.3%, respectively. These results verified the satisfactory lubrication effects of nanoparticle MQL. MoS_2, carbon nanotube (CNT), and ZrO_2 nanoparticles were also added in the grinding fluid of nanoparticle jet MQL to analyze their grinding surface lubrication effects. The specific grinding energy of MoS_2 nanoparticle was only 32.7 J/mm~3, which was 8.22% and 10.39% lower than those of the other two nanoparticles. Moreover, the surface roughness of workpiece was also smaller with MoS_2 nanoparticle, which indicated its remarkable lubrication effects. Furthermore, the role of MoS_2 particles in the grinding surface lubrication at different nanoparticle volume concentrations was analyzed. MoS_2 volume concentrations of 1%, 2%, and 3% were used. Experimental results revealed that the specific grinding energy and the workpiece surface roughness initially increased and then decreased as MoS_2 nanoparticle volume concentration increased. Satisfactory grinding surface lubrication effects were obtained with 2% MoS_2 nanoparticle volume concentration.
甘肃省粮食类薯类制品中铝的暴露量评估

目的结合2010~2012年甘肃省14个地市随机抽取的粮食类薯类制品中铝含量和国家居民营养与健康状况监测的食物摄入量相关数据, 对甘肃粮食类薯类制品中铝的暴露量进行风险评估。方法采用点评估方法, 利用中国居民膳食营养与健康状况调查报告的已有数据, 将食物分为米及米制品、面及面制品、其他谷类、豆制品、薯类以及淀粉共六大类, 区域划分为城市和农村, 将整个人群按年龄、性别分为10组, 对各组的食品摄入量结合铝检测的平均值、中位数以及第95百分位数进行分析评估。结果从全省总体(安全限值均值, MOS)来看, 2010~2012年粮食类薯类制品中人群铝暴露量的MOS值为1.4~3.9。结论甘肃省粮食类薯类制品中铝的暴露量较高。铝含量偏高食品存在安全风险, 尤其在2~7岁年龄段人群。
基于线粒体DNA D-loop区部分序列分析舟山海域带鱼种群遗传结构

带鱼(Trichiurus lepturus Linnaeus), 俗称刀鱼、白带鱼, 隶属鲈形目(Perciformes), 带鱼科(Trichiuridae), 带鱼属(Trichiurus), 广泛分布于世界各温热带海域, 在我国主要分布在东海、南海、黄海和渤海。带鱼为我国最重要的捕捞对象, 其产量多年来一直位居我国海洋捕捞鱼类产量的首位, 占有十分重要的渔业经济地位。舟山带鱼是全国首批海鲜类地理标志证明商标海鲜, 曾与大黄鱼、小黄鱼、墨鱼并称为我国"四大渔业"。自20世纪70年代后, 由于受过度捕捞和环境变化等影响, 舟山海域的带鱼资源出现了严重衰退; 1989年起我国在东海区实施了带鱼主要产卵场5-6月禁捕制度和1995年起实施伏季休渔渔业管理, 经过10多年较为有效地实施, 带鱼的年平均资源量有较大的增长, 渔获质量也有很大的改善。但在当今巨大的捕捞压力下, 带鱼种群组成小型化、性成熟提早、单位渔获量下降等生长型过度捕捞现象还比较明显, 带鱼资源仍处于缓慢衰退之中。
协同应对全球变化,促进可持续发展——“未来地球2025愿景”

2014年11月,国际科学联盟发布了“未来地球2025愿景”。愿景制定了未来十年该计划的学科发展体系,提出将推进以解决问题为导向的科学研究,加强交叉学科发展,贯彻“协同设计、协同实施、共享成果”的创新思路,发展新知识应对全球变化挑战,向可持续性转变。从总体构想、学科发展、创新思路、预期成果四个方面阐述了“未来地球2025愿景”。同时,认为我国应以“未来地球”计划为契机,深刻理解可持续发展内涵,转变发展观念;在自然科学和社会科学方法的基础上发展综合集成研究,构建“经济-社会-环境”健康发展系统;重视交叉学科与前沿领域研究,发展新知识,应对全球变化挑战。
活血利水方治疗32例脑出血的临床研究

目的:研究活血利水方治疗脑出血的临床效果。方法:在我院自2012年3月至2013年12月收治的脑出血患者中,随机抽取64例,根据其入院时间的先后,平均分为观察组 (n = 32)和对照组 (n = 32) 。对照组患者接受的是西医治疗,观察组患者在接受西医治疗的基础上加行活血利水方治疗。对比两组患者的治疗效果以及经治疗后的观察指标。结果:观察组患者在西医治疗的基础上加行活血利水方,其治疗效果明显高于对照组; 两组患者经治疗后,观察组的患者的各项观察指标都明显优于对照组。结论:对脑出血患者施以治疗的过程中,在西医治疗的基础上加行活血利水方治疗方法,可以明显提高患者的治疗效果,并且无副作用。
清幽健中汤联合西药治疗耐药幽门螺杆菌相关消化性溃疡的临床观察

目的:观察清幽健中汤联合四联补救疗法治疗耐药幽门螺杆菌相关消化性溃疡的疗效。方法:将92例耐药幽门螺杆菌相关消化性溃疡患者,随机分成两组。对照组45例使用四联补救疗法,然后再服用奥美拉唑20mg,每天2次,连服4周进行治疗;治疗组47例服用清幽健中汤联合四联补救疗法治疗。结果:治疗组临床治疗总有效率、胃镜下溃疡愈合率、幽门螺杆菌根除率明显高于对照组;治疗组不良反应发生率明显低于对照组;两组差异具有统计学意义(P<0.05)。结论:清幽健中汤联合四联补救疗法治疗耐药幽门螺杆菌相关消化性溃疡,治疗耐药幽门螺杆菌相关消化性溃疡有明显优势。
生地黄芩麦冬方联合复方口腔溃疡膜剂治疗复发性口腔溃疡的临床效果研究

目的:探讨生地黄芩麦冬方联合复方口腔溃疡膜剂治疗复发性口腔溃疡(ROU)的临床效果及免疫调节作用。方法:按照随机数字表法将6例复发性口腔溃疡患者均分为治疗组和对照组,对照组患者给予我院自制复方口腔溃疡膜剂治疗,治疗组患者给予生地黄芩麦冬方联合复方口腔溃疡膜剂治疗,连续治疗4周,比较两组治疗效果。结果:治疗组患者治疗总有效率为93.75%,显著高于对照组的81.25%(P<0.05));两组患者治疗后CD3、CD4、CD4/CD8水平均显著升高,与治疗前比较,差异具有统计学意义;治疗组患者治疗后CD3、CD4、CD4/CD8水平均显著高于对照组(P<0.05);两组患者治疗前后Ig A、Ig G、Ig M水平均无明显变化,组间和组内比较差异均无统计学意义。结论:生地黄芩麦冬方联合复方口腔溃疡膜剂可有效调节复发性口腔溃疡患者T淋巴细胞亚群平衡,提高临床疗效,且对患者血清免疫球蛋白水平无明显影响。
Semi-analytical method for calculating aeroelastic effect of profiled rod flying at high velocity

The key technique of a kinetic energy rod (KER) warhead is to control the flight attitude of rods. The rods are usually designed to different shapes. A new conceptual KER named profiled rod which has large L/D ratio is described in this paper. The elastic dynamic equations of this profiled rod flying at high velocity after detonation are set up on the basis of Euler-Bernoulli beam, and the aeroelastic deformation of profiled rod is calculated by semi-analytical method for calculating the vibration characteristics of variable cross-section beam. In addition, the aero-elastic deformation of the undeformed profiled rod and the aeroelastic deformation of deformed profiled rod which is caused by the detonation of explosive are simulated by computational fluid dynamic and finite element method (CFD/FEM), respectively. A satisfactory agreement of these two methods is obtained by the comparison of two methods. The results show that the semi-analytical method for calculating the vibration characteristics of variable cross-section beam is applied to analyze the aeroelastic deformation of profiled rod flying at high velocity.
Radiation-induced in vitro mutagenesis system for salt tolerance and other agronomic characters in sugarcane (Saccharum officinarum L.)

Gamma ray-induced in vitro mutagenesis and selection for salt (NaCl) tolerance were investigated in sugarcane (Saccharum officinarum L.). Embryogenic callus cultures were irradiated (10 to 80 Gy) and subjected to in vitro selection by exposure of irradiated callus to NaCl (0, 50, 100, 150, 200, and 250 mmol L~(–1)). Increasing NaCl concentrations resulted in growth reduction and increasedmembrane damage. Salt-selected callus lines were characterized by the accumulation of proline, glycine betaine, and Na~+ and K~+ concentration. Higher accumulation of proline and glycine betaine was observed in NaCl stressed callus irradiated at 20 Gy. Na~+ concentration increased and K~+ concentration decreased with increasing salt level. Irradiated callus showed 50–60% regeneration under NaCl stress, and in vitro-regenerated plants were acclimatized in the greenhouse, with 80–85% survival. A total of 138 irradiated and salt-selected selections were grown to maturity and their agronomic performance was evaluated under normal and saline conditions. Of these, 18 mutant clones were characterized for different agro-morphological characters and some of the mutant clones exhibited improved sugar yield with increased Brix%, number of millable canes, and yield. The result suggest that radiation-induced mutagenesis offers an effective way to enhance genetic variation in sugarcane.
A critical overview on Thymus daenensis Celak.: phytochemical and pharmacological investigations

Thymus daenensis Celak. is an herb endemic to Iran belonging to the Lamiaceae family. Growing in many parts of Iran, the plant is extensively used in folk medicine. This review was performed to compile phytochemical and pharmacological data of T. daenensis. Databases such as PubMed, Scopus, Web of Science, ScienceDirect, Scientific Information Database, Embase, IranMedex and Google Scholar were searched for the terms “Thymus daenensis” and “Avishan-e-denaii” up to 1st January 2014. Following reported ethnopharmacological uses, various T. daenensis preparations have been investigated for antimicrobial, antioxidant, insecticidal and immunomodulatory effects in recent studies. Moreover, numerous studies have been published on the composition of the herb’s essential oil, focusing either on environmental parameters or preparation methods. Due to its high concentration of thymol, the plant’s essential oil possesses high antimicrobial activities on human pathogenic strains. However, comprehensive studies on the toxicity and teratogenicity as well as clinical efficacy of Thymus daenensis are missing.
There was no "Great Bank of Guizhou" in the Early Triassic in Guizhou Province, South China

In the 1990s, some geologists named the Early Triassic isolated carbonate platform in the Luodian area of southern Guizhou Province in South China as the “Great Bank of Guizhou”. During the past twenty years, this term “Great Bank of Guizhou” was used in more than 300 articles in foreign countries. In the 1990s, the authors have studied the lithofacies palaeogeography of the Early and Middle Triassic in South China. In June 2014, we went to the Luodian area and studied the Early Triassic Bianyang section again. According to the geological data we acquired, in the Early Triassic of the Luodian area of southern Guizhou Province, there was only an isolated “Luodian Carbonate Platform”, while no bank existed, not to mention the “Great Bank of Guizhou”. It is worth further discussion.
Induced pluripotent stem cells are induced pluripotent stem cell-like cells

Gold is rare and precious, while pyrite (FeS_2) is abundant and cheap. Pyrite is nicknamed fool's gold, since pyrite looks like gold and it is even shinier and brighter than gold. It is very difficult to recognize the differences between a real natural gold and a gold-like rock (pyrite) to non-professional persons,but we know that all that glitters is not gold.
Trigger elimination of polymorphic ventricular tachycardia and ventricular fibrillation by catheter ablation: trigger and substrate modification

Ventricular fibrillation (VF) is a malignant arrhythmia, usually initiated by a ventricular premature contraction (VPC) during the vulnerable period of cardiac repolarization. Ablation therapy for VF has been described and increasingly reported. Targets for VF triggers are VPCs preceded by Purkinje potentials or from the right ventricular outflow tract (RVOT) in structurally normal hearts, and VPC triggers preceded by Purkinje potentials in ischemic cardiomyopathy. During the session, mapping should be focused on the earliest activation and determining the earliest potential is the key to a successful ablation. However, suppression of VF can be achieved by not only the elimination of triggering VPCs, but also by substrate modification of possible reentry circuits in the Purkinje network, or between the PA and RVOT. The most important issue before the ablation session is the recording of the 12-lead ECG of the triggering event, which can prove invaluable in regionalizing the origin of the triggering VPC for more detailed mapping. In cases where the VPC is not spontaneous or inducible, ablation may be performed by pace mapping. Further studies are needed to evaluate the precise mechanisms of this arrhythmia.
Optimal antiarrhythmic drug therapy for electrical storm

Electrical storm, defined as 3 or more separate episodes of ventricular tachycardia or ventricular fibrillation within 24 hours, carries significant morbidity and mortality. These unstable ventricular arrhythmias have been described with a variety of conditions including ischemic heart disease, structural heart disease, and genetic conditions. While implantable cardioverter defibrillator implantation and ablation may be indicated and required, antiarrhythmic medication remains an important adjunctive therapy for these persons.
Characteristics of subsurface density variations before the 4.20 Lushan M_s7.0 earthquake in the Longmenshan area: inversion results

The 4.20 Lushan M_S7.0 earthquake occurred on the southwest segment of the Longmenshan fault on 20 April 2013. Some meaningful information on the preparation and occurrence of this earthquake was found based on the dynamic variation of gravity(DVG). To examine the great progress of the Lushan earthquake, we obtained the density variation(DENV) derived from the DVG using the compact gravity inversion method in this article. The inversion results reveal three main findings:(1) the DENV in the crust in the Jinshajiang fault area changed from positive in 2010–2011 to negative in 2011–2012.(2) The DENV in the Xianshuihe fault area decreased continuously from 2010 to 2012.(3) The DENV of the uppermost mantle of South China decreased in 2010–2011 and increased in 2011–2012. We propose that the flow/expansion of the middle-lower crust beneath the Bayan Har block and Moho subsidence on the southwest margin of the Chuan-Dian block may have been the major causes of the Lushan earthquake.
Heterogeneous strain regime in the eastern margin of Tibetan Plateau and its tectonic implications

The eastern margin of Tibetan Plateau is one of the most active zones of tectonic deformation and seismicity in China. To monitor strain buildup and benefit seismic risk assessment, we constructed 14 survey-mode global position system(GPS) stations throughout the northwest of Longmenshan fault. A new GPS field over 1999–2011 is derived from measurements of the newly built and pre-existing stations in this region. Sequentially,two strain rate fields, one preceding and the other following the 2008 M_W7.9 Wenchuan earthquake, are obtained using the Gausian weighting approach. Strain field over1999–2007 shows distinct strain partitioning prior to the2008 M_W7.9 Wenchuan earthquake, with compression spreading over around Longmenshan area. Strain field derived from the two measurements in 2009 and 2011 shows that the area around Longmenshan continues to be under striking compression, as the pattern preceding the Wenchuan earthquake, implying a causative factor of the sequent of 2013 M_W6.7 Lushan earthquake. Our GPSderived dilatation shows that both the Wenchuan and Lushan earthquakes occurred within the domain of pronounced contraction. The GPS velocities demonstrate that the Longriba fault underwent slight motion with the faultnormal and-parallel rates at 1.0 ± 2.5 mm and 0.3 ± 2.2 mm/a;the Longmenshan fault displayed slow activity, with a fault-normal rate at 0.8 ± 2.5 mm/a, and a fault-parallel rate at 1.8 ± 1.7 mm/a. Longriba fault is on a par with Longmenshan fault in strain partitioning to accommodate the southeastward motion of eastern margin of the Tibetan Plateau. Integrated analysis of principal strain tensors, mean principal stress, and fast directions of mantle anisotropy shows that west of Sichuan is characterized as mechanically strong crust-mantle coupling.
A Portable Fall Detection and Alerting System Based on k-NN Algorithm and Remote Medicine

This paper presents information on a portable fall detection and alerting system mainly consisting of a custom vest and a mobile smart phone. A wearable motion detection sensor integrated with tri-axial accelerometer, gyroscope and Bluetooth is built into a custom vest worn by elderly. The vest can capture the reluctant acceleration and angular velocity about the activities of daily living (ADLs) of elderly in real time. The data via Bluetooth is then sent to a mobile smart phone running a fall detection program based on k-NN algorithm. When a fall occurs the phone can alert a family member or health care center through a call or emergent text message using a built in Global Positioning System. The experimental results show that the system discriminates falls from ADLs with a sensitivity of 95%, and a specificity of 96.67%. This system can provide remote monitoring and timely help for the elderly.
Real-time surface figure monitoring of optical elements in continuous polishing

A real-time monitoring system is set up based on a computer, dynamic interferometer, beam expanding system, and a beam reflecting system. The stability and repeatability of the monitoring system is verified. A workpiece and a glass monitoring plate are placed in the same ring. The surface figure of the workpiece, monitored by the monitoring plate, synchronizes with the surface of the glass monitoring plate in terms of peak-valley and power. The influence of the reflection and transmission surface are discussed in theory and a numeral deviation in online and offline testing data is quantitatively analyzed. The new method provides a quick and easy real-time method to characterize changes to the optical surface during polishing.
略论晋代岭南名医葛洪养生之道

葛洪是晋代岭南名医、道家、养生家,他的养生思想集中体现在其所著的《抱朴子·内篇》中,主要讲述修仙证道的道理,其基本内容包括神仙论、养生术、炼丹术,也包含了医学养生学思想,是重要的养生文献,总结了葛洪养气存神,恬淡寡欲,宝精行气,动以养形,吐纳炼气,得其节宣之和,以不伤为本,饮食有节、五味调和,药养治未病等养生之道。
染色中药添加色素的检测技术研究进展

中药材、中药饮片非法染色掺假的现象在国内普遍存在,伪劣药品不但贻误病情,甚至带有毒性,会对人体造成不同程度的危害。作者通过查阅相关文献,归纳了近几年常见的中药染色现象并对其中非法添加的合成色素的检测方法进行了总结,特别介绍了适合现场监测的快速检测方法,为有关部门监管药材质量提供了参考。
外源物质对云木香种子发芽影响的初步研究

目的筛选能有效提高低活力云木香种子发芽率的外源物质,为云木香的规范化栽培提供依据。方法25℃下,在黑暗和光照条件下,用一定浓度的KNO_3、GA3、H_2O_2、PEG、青霉素溶液对云木香种子进行发芽预处理。结果在黑暗条件下: 0. 4%的KNO_3、50%的PEG和300 mg·L~(-1)青霉素能显著提高云木香种子的发芽率和发芽指数,0. 6%的KNO_3、200 mg·L~(-1)、400 mg·L~(-1)和500 mg·L~(-1)青霉素云木香种子的萌发有抑制作用;在光照条件下: 0. 8%的KNO_3能显著提高云木香种子的发芽率,对发芽势和发芽指数无显著影响。H_2O_2对云木香种子萌发有不同程度的抑制作用,GA3没有显著影响。结论黑暗条件下0. 4%KNO_3、300 mg·L~(-1)青霉素和光照条件下0.8%KNO_3对云木香种子的萌发具有促进作用。
Investigation of College Students' Mental Health Status via Semantic Analysis of Sina Microblog

The objective of this study is to understand the current mental status of college students in mainland China. In this study, 60 thousand college students’ microblog content from January 2014 to June 2014 was collected. An emotional energy level, which was developed by a psychologist David R Hawkins, was taken as a basis for ontology database to divide the student’s emotion into three parts—positive, negative and neutral status. An ontology-based semantic analysis method was used to analyze the microblog data. The result shows that 46.38% of Sina microblog data reflects positive psychological status, and the ratios of neutral and negative psychological status are 19.77% and 33.85%, respectively. It means that almost one third microblog reflects some negative mentality. The semantic analysis of the big data suggests that most students have healthy mental status, and the negative status of the students should not be ignored.
ALA-PDT联合CO_2激光治疗肛周尖锐湿疣的疗效观察和护理

尖锐湿疣(Condyloma Acuminatum,CA)是一种由人乳头瘤病毒(Human Papillomavirus,HPV)感染所致的常见性传播疾病之一,传统治疗主要有激光、冷冻等物理方法,虽能短期内有效清除皮损,但治疗后易复发。其中,肛周CA较为特殊。由于肛周解剖部位隐蔽,其复发率更高,给患者身心带来严重创伤,是临床治疗的难点。氨基酮戊酸光动力疗法(ALA Photodynamic Therapy, ALA-PDT)是治疗 CA 轻疼痛感,因此本研究19例患者通过听音乐、玩游戏使疼痛缓解;12例患者采取渐进性适应的方法改善疼痛;10例患者仍感疼痛不适,局部用复方利多卡因乳膏外敷后顺利完成治疗。
CO_2点阵激光治疗鲍温样丘疹病1例

鲍温样丘疹病(bowenoid papulosis,BP)是指发生在生殖器部位的多发性斑丘疹,组织学上与鲍温氏病类似。1970年,由Lloyd首先报道并命名为多中心色素型鲍温病。1978年,ade等将其正式命名为鲍温样丘疹病,并沿用至今。BP好发于性活跃的中青年,与HPV感染密切相关,尤其以高危型HPV16感染密切相关,有报道指出66.7%的BP 患者检测出HPV-DNA。研究发现其有自愈倾向,亦有转化成鳞癌的报道,由于该病发病部位特殊,往往给患者带来极大的思想负担,影响患者的正常工作和生活。目前,治疗BP主要采用手术切除、CO_2激光以及外用药物治疗,创伤大,治疗疗程长且易留有瘢痕。
秀丽隐杆线虫在生态毒理学评价中应用研究进展

随着全球工业的飞速发展,工业废弃物的排放、农药和重金属制品的使用不断增多,导致了重金属、有机物等污染物在环境中的富集。这些污染物通过各种途径最终会影响生态系统的生物多样性和人类的健康。因此,近年来国内外学者越来越关注污染物对生态系统的破坏和对生物的毒害作用及其作用机制,逐渐筛选出一些操作简单、成本低廉、测试周期较短的生物指示物和模式生物进行污染物的检测和评价,例如线虫、斑马鱼、大型蚤、蚯蚓等。线虫不仅是土壤中的后生生物,同时存在于水体和淤泥沉积物中,在维护土壤生态系统稳定,促进物质循环、能量流动和维护环境健康等方面发挥着重要作用。其中秀丽隐杆线虫(Caenorhabditis elegans,C. elegans)作为线虫的代表,是生态毒理学室内实验研究和现场研究中应用较多的线虫种类。目前,利用C. elegans进行毒性评估已得到逐步肯定,2001年美国材料与试验协会(American Society for Testing and Materials,ASTM)颁布了将C. elegans用于土壤生态毒理学评价的标准化指南; 2007年国际标准化组织(International Organization for Standardization, ISO)颁布了将C. elegans用于淡水淤泥毒理学评价的标准化指南; 2009年ISO颁布了将 C. elegans用于水体毒理学评价的标准化指南。本文概述C. elegans在生态毒理学中的研究现状,并探讨今后的研究趋势。