mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Hole flanging with ironing process of two-ply thick sheet metal

An incremental updated Lagrangian elasto-plastic finite element method(FEM) was employed to analyze the hole-flanging with the ironing of circulate plates using a pre-determined smaller hole at the center of the two-ply sheet metals. An extended r_(min) technique was employed such that each incremental step size can be determined not only by the yielding of an element Gaussian point, but also by the change under the boundary conditions of penetration, separation, and the alternation of the sliding-sticking state of friction along the tool-sheet interface. Two-ply sheet metals are generally composed of metals that have different mechanical properties. Thus, the forming process of these materials is complicated. A number of experiments and simulations were performed using a conical punch with a cone angle of 45°. The experimental results were compared with FEM-simulated results. It is found that using the elasto-plastic FEM can effectively predict the generation process of the deformed shape until unloading. The calculated sheet geometries and the relationship between punch load and punch travel are in good agreement with the experimental data.
Preparation and electrochemical properties of LiMn_(1.95)M_(0.05)O_4(M=Cr,Ni)

The preparation process and electrochemical properties of LiMn_2O_4 and LiMn_(1.95)M_(0.05)O_4 (M=Cr, Ni) were studied. The results show that the decomposition temperature range of xerogel prepared with lithium acetate and manganese acetate as raw materials is large and the decomposition speed is slow. Oxygen consumed is apt to get a prompt supplement during the preparation of LiMn_2O_4, and carbonization of the organic matter can be reduced or avoided, which is favorable to the combination of lithium and manganese. Using lithium acetate, manganese acetate, chromium nitrate, and nickel nitrate as raw materials and adopting the citric acid complexing method, it has been found that the prepared powders have high pu-rity, high quality stability, and even doping characters. With the increase of sintering temperature, the particle size and crys-tal lattice constant of LiMn_(1.95)M_(0.05)O_4 (M = Cr, Ni) enhance. However, the purity of the product is relatively high and has no obvious change, which is advantageous to the control of the quality of LiMn_(1.95)M_(0.05)O_4 (M = Cr, Ni). Doping with a small amount of Cr~(3+) and Ni~(2+) can stabilize the spinel structure of LiMn_2O_4, suppress the Jahn-Teller effect, and improve the cy-cling properties but reduce the initial capacity.
The Long-term Survival Chances of Young Massive Star Clusters

We review the long-term survival chances of young massive star clusters (YMCs),hallmarks of intense starburst episodes often associated with violent galaxy interactions. We address the key question as to whether at least some of these YMCs can be considered protoglobular clusters (GCs), in which case these would be expected to evolve into counterparts of the ubiquitous old GCs believed to be among the oldest galactic building blocks. In the absence of significant external perturbations, the key factor determining a cluster's long-term survival chances is the shape of its stellar initial mass function (IMF). It is, however, not straightforward to assess the IMF shape in unresolved extragalactic YMCs. We discuss in detail the promise of using high-resolution spectroscopy to make progress towards this goal,as well as the numerous pitfalls associated with this approach. We also discuss the latest progress in worldwide efforts to better understand the evolution of entire cluster systems, the disruption processes they are affected by, and whether we can use recently gained insights to determine the nature of at least some of the YMCs observed in extragalactic starbursts as proto-GCs. We conclude that there is an increasing body of evidence that GC formation appears to be continuing until today; their long-term evolution crucially depends on their environmental conditions, however.
Integrated Assessment of Environmental and Economic Performance of Chemical Products Using Analytic Hierarchy Process Approach

With the increasing public consciousness on environmental issues, chemical products and process de-signs require simultaneous satisfaction and compromise of environmental and economical requirements. To fulfill the two conflicting while complementary objectives, a systematic approach for life cycle design of a chemical product is proposed in this article. Multiattribute decision-making is adopted in a trade-off consideration of both technical economical evaluation and environmental impacts assessment using the analytic hierarchy process (AHP) approach. On the basis of an evaluation of the relative importance of the criteria multicriteria decision making is performed. In this study, an AHP model is used to derive single a criteria score by analyzing the environmental impact and life cycle cost of a product, respectively. And a fluctuant weight analysis is put forth to calculate the integrated index of the product to enable products to be ranked or selected intuitionally and conveniently. The proposed AHP model has been applied to a case study, a comparative study on chamber cleaning with NF_3 and C_2F_6. The results show that the proposed AHP model is capable of providing a rational and relevant evaluation.
Experimental Study on Emission Control of Premixed Catalytic Combustion of Natural Gas Using Preheated Air

In this paper the premixed catalytic combustion emissions such as CO, unburned hydrocarbon (UHC), NO_x and the temperature distribution in the catalytic monolith with ultra low concentration of Pd were studied. Three types of monoliths were used for experiments and the temperature of preheated air was respectively 50℃ , 100℃ and 200℃ . The results showed that preheated air made radial temperature in the catalytic monolith uniform which helped to avoid local hot spots so as to decrease NOx emission. The experiment also proved that the shorter monolith showed much better catalytic combustion performance than longer one and the temperature at the exit of the shorter monolith was relatively lower. On the contrary, the temperature was higher in the longer monolith and the lethal NOx emission was slightly increased.
Report on Childhood Obesity in China (5) Body Weight, Body Dissatisfaction, and Depression Symptoms of Chinese Children Aged 9-10 Years

Objective To investigate the relationship between body weight, body dissatisfaction and depression symptoms among Chinese children. Methods The fasting body weight and height of the third and fourth grade students (n=3886, aged 9 or 10 years) from 20 schools in Beijing, China, were measured, and the students were asked to choose the figures of body image and to complete the self-reported children’s depression inventory (CDI) questionnaire. Results The CDI Cronbach’s alpha was 0.81. The total CDI score was 9.60±7.50, 13.2% of children (boys 16.7% vs girls 9.5%) were at risk of developing depression symptoms. Overweight girls, but not boys, had significantly higher total CDI score than their normal weight counteparts. Both obese girls and boys showed a higher negative self-esteem score. More than one fifth underweight girls still wanted to be thinner while more than one third obese boys still wanted to be heavier. Children who wanted to be thinner showed slightly higher scores of ineffectiveness and negative self-esteem. After introducing the body dissatisfaction into the model, overweight was still associated with total CDI score among girls and obesity was still associated with negative self-esteem among both boys and girls. Conclusion Overweight girls show a significantly higher depression symptom score than their normal weight counterparts, which maybe partially explained by body dissatisfaction. Obese boys and girls are both more likely to suffer from low self-esteem, which is partially explained by body dissatisfaction.
导管射频消融尚不宜作为心房颤动的一线治疗方法

心房颤动(以下简称房颤)是临床上最常见的快速心律失常之一.发病率高,并呈反复持续性发作,危害大.房颤不仅影响患者的生活质量,而且无论是阵发性房颤还是持续性房颤,均可引起血栓栓塞并发症,并增加心力衰竭的发生率和病死率[1].毫无疑问的是恢复房颤患者的窦性节律是治疗房颤的最理想的方式.长期以来,药物治疗对房颤的窦性节律维持率很差.因此,探讨一种根治房颤的方法一直是电生理工作者的研究课题.近年来,导管射频消融治疗房颤已经得到了很大的进展,其成功率不断提高,技术也不断成熟.但是,导管射频消融治疗房颤作为一线治疗措施,仍需要慎重.
不同方法提取的北细辛挥发油的气质联用成分分析

北细辛为马兜铃科植物北细辛[Asarum heterotropoides Fr. Schimidt. var. mandshuricum ( Maxim. )Kitag.]的干燥全草,主产于辽宁、吉林、黑龙江、陕西、甘肃、四川、山东、山西、河南、湖北等地.北细辛祛风散寒、通窍止痛、温肺化饮.用于治疗风寒感冒、头痛,牙痛,鼻塞鼻渊,风湿痹痛,痰饮喘咳.北细辛为临床常用中药,用药剂量过大有临床不良反应报道,北细辛不适用于严重心血管病、实证高血压、肾功能减退、肾性高血压等.
第五次全国中西医结合男科学术会议在济南召开

第五次全国中西医结合男科学术会议暨男科提高班于2007年5月24-27日在济南召开.大会得到了国家中医药管理局、中国中西医结合学会、中国中医科学院、山东省卫生厅、山东省中医药管理局在济南市卫生局等的大力支持.
Wnt信号通路在表皮干细胞增殖分化过程中的调控作用

皮肤组织特异性干细胞--表皮干细胞是皮肤及其附属器发生、修复和改建的关键性细胞。表皮组织的自我更新和损伤修复主要靠表皮干细胞的代偿性增殖和定向分化来完成。因此，了解表皮干细胞增殖分化的调控机制是应用干细胞进行组织工程学研究的前提和基础。目前比较明确的影响表皮干细胞增殖分化的外界因素主要包括各种生长因子(如EGF)- 、细胞因子和细胞外基质分子等，这些因子或分子共同构成干细胞所处的微环境，又称干细胞“壁龛”(niche)。外来信号首先要通过某种方式作用于细胞表面，进而将这些信号传至细胞内，激活相关信号转导通路如Wnt通路、MAPK通路和Notch通路等，引起一些与增殖分化相关基因的表达。鉴于表皮干细胞增殖分化的基因调控机制相当复杂，其具体的分子机制仍不十分清楚，我们在此主要对研究较多的Wnt信号通路在表皮干细胞增殖分化过程中的作用进行系统的分析和总结。
新西兰、澳大利亚木材防腐产业发展给我们的启示

为了贯彻落实《国务院办公厅转发发展改革委等部门关于加快推进木材节约和代用工作意见的通知》(国办发[2005]58号)精神,学习借鉴国外木材防腐技术和管理经验,促进我国木材保护行业技术进步,2007年3月14日～3月23日,由木材节约发展中心牵头组织的中国木材防腐代表团赴新西兰、澳大利亚两国就木材防腐自动化生产技术与设备及木材保护行业协会组织工作等情况进行了实地考察.
浅谈抽检特性曲线(OC曲线)在抽样检验中的应用

检验是企业质量管理的重要工作之一.抽样检验是从产品的总体中抽出一部分,通过检验这一部分产品来估计产品总体的质量.抽样方法可用(N,n,Ac)表示.其中N为批产品量,n为抽检样本数,Ac为允许废品数.产品总体的接收概率与产品总体交验批所含不合格品率的关系的图像称为抽检特性曲线(The Operating Characteristic curve),简称OC曲线.它表明对一个给定的过程质量,各抽样方案预期的可接收的批的百分数[1].OC曲线的横坐标表示批不合格品率,纵坐标表示按一定抽检方案(N,n,Ac)抽检的废品率为P的批产品接收概率.
混合树脂液强化改性杨木单板的聚合工艺研究

选取苯乙烯(St)、甲基丙烯酸甲酯(MMA)和醋酸乙烯酯(VAc)三种乙烯类单体浸注杨木单板并采用加热聚合的工艺制备杨木单板强化材.通过正交试验和方差分析,确定了最佳工艺:引发剂种类为偶氮二异丁腈;聚合温度T_3,聚合时间S_(j2),环烷酸钴量2%,氯化锌6%,偶氮二异丁腈3%(百分比均指占三种乙烯类单体树脂液总质量的百分比),其中温度参数对转化率影响显著,回归方程为:y=10.703x-3.662(y转化率,%;x温度,℃).
环境中的药物——LC-MS/MS分析地表水和地下水

成百上千的活性物质正被用于人药和兽药处方中.由于药物的广泛应用,它们的残留物可通过多种途径进入环境.虽然主要通过尿和粪便的排泄,但是药品生产中的排放也应被考虑.当抗生素用于水产业,就会产生更直接的影响.污水处理设备不能完全除去药物,因此药物会出现在地表和地下水样品中.近年来,人们对环境中药物的兴趣正在增加,需要建立一种快速、灵敏、有选择性的方法来分析水样.
台州湾近海海水中多环芳烃的浓度水平及源解析

随着沿海地区经济的高速发展, 愈来愈多的有毒有害有机污染物排放到海洋环境中, 通过食物链富集, 最终危害人体健康.台州湾入海口有台州最大的油轮码头,船只往来频繁,船只燃料泄漏等可能是PAHs污染的来源之一. 同时, 台州湾地区养殖业发达,水体环境质量直接关系到水产品的品质及消费者的身体健康.
脑血栓患者发锌铜钙镁含量分析

头发是人体内微量元素的排泄器官之一，其微量元素含量可以间接可靠地反映该元素在体内的某些状况。头发活性低，微量元素含量稳定且比血液、尿液里高，具有取材方便，不损伤人体，易于保存和传递等优点，因而被看作是一种理想的活体检测材料和环境污染指示器，可以成为疾病诊断的补充工具。近年来，脑血栓病与微量元素的关系已为许多学者重视，本文测定了脑血栓患者发Zn、Cu、Ca、Mg4种元素含量以探讨机体Zn、Cu、Ca、Mg含量与脑血栓发病之间的关系。
老年人肝癌术后复发介入治疗28例临床分析

随着对肝癌生物学特性的了解及手术切除技术的不断提高,其手术切除率已大大改进,但术后远期疗效尚不令人满意,主要是术后有较高的局部或远处转移,临床上缺乏有效的治疗措施,再次手术难度较大,即使强行手术切除往往预后疗效较差.肝动脉介入治疗已成为肝癌主要治疗手段[1,2],关于老年人肝癌术后复发介入治疗目前尚未见报道.本文总结了28例肝癌术后复发介入治疗处理方法,现将结果总结如下.
加强医院感染管理

领导重视,建立健全组织机构:我院是以内、外、妇、儿、五官、口腔集一体的一所综合性医院,领导对医院感染的监测、预防及管理非常重视,专门成立了医院感染管理委员会领导小组,投入了必要人力、物力、财力,明确分工、责任到人,感染控制办公室专职人员定期到各科采样监测,确保医院感染工作的健康发展.
青海省治多县1例人间鼠疫处理报告

治多县治渠乡位于青海省治多县东北部,平均海拔4 200m左右,距县城97km,全乡现有人口3 113人,共972户,是纯牧业藏族乡.2005年6月27日治多县治渠乡治加村发生1例人间鼠疫.报告如下.
Formation of multiple trimethylsilyl derivatives in the derivatization of 17α-ethinylestradiol with BSTFA or MSTFA followed by gas chromatography-mass spectrometry determination

N,O-bis(trimethylsily)trifluoroacetamide (BSTFA) and N-methyl-N(trimethylsily) trifluoroacetamide (MSTFA) are common derivatization reagents used in the GC-MS analysis of estrogen steroids such as estrone (E1) and 17α-ethinylestradiol (EE2). In this study, three trimethylsilyl (TMS) steroid derivatives, mono-and di-trimethylsilyl EE2 and mono-trimethylsilyl E1, were observed during the derivatization of EE2 with BSTFA or MSTFA and/or GC separation. Factors influencing the production of multiple TMS derivatives and their relative abundance were examined. It was found that both methanol and bisphenol A competed with estrogenic esteroids when reacting with silylation reagents, and thus affected the formation of TMS derivatives and their relative abundance in the derivatization products. Methanol was found to be more reactive than bisphenol A with the BSTFA reagent. None of the three solvents tested in this study could prevent the generation of multiple TMS derivatives during the derivatization of EE2 with BSTFA, followed by GC analysis. A similar result was observed using MSTFA as the derivative reagent followed by GC analysis. Thus, the suitability of BSTFA or MSTFA as the derivatization reagent for the determination of E1 and EE2 by GC-MS, under the conditions reported here, is questionable. This problem can be solved by adding trimethylsilylimidaz (TMSI) in the BSTFA reagent as recommended, and the performance of the method has been proved in this study.
Impact of fertilization on chestnut growth, N and P concentrations in runoff water on degraded slope land in South China

Growing fruit trees on the slopes of rolling hills in South China is causing serious environmental problems because of heavy application of chemical fertilizers and soil erosion. Suitable sources of fertilizers and proper rates of applications are of key importance to both crop yields and environmental protection. In this article, the impact of four fertilizers, i.e., inorganic compound fertilizer, organic compound fertilizer, pig manure compost, and peanut cake (peanut oil pressing residue), on chestnut (Castanea mollissima Blume) growth on a slope in South China, and on the total N and total P concentrations in runoff waters have been investigated during two years of study, with an orthogonal experimental design. Results show that the organic compound fertilizer and peanut cake promote the heights of young chestnut trees when compared to the control. In addition, peanut cake increases single-fruit weights and organic compound fertilizer raises single-seed weights. All the fertilizers increase the concentrations of total N and total P in runoff waters, except for organic compound fertilizer, in the first year experiment. The observed mean concentrations of total N varied from 1.6 mg/L to 3.2 mg/L and P from 0.12 mg/L to 0.22 mg/L, which are increased with the amount of fertilizer applications, with no pattern of direct proportion. On the basis of these experiment results, organic compound fertilizer at 2 kg/tree and peanut cake at 1 kg/tree are recommended to maximize chestnut growth and minimize water pollution.
Decomposition of alachlor by ozonation and its mechanism

Decomposition and corresponding mechanism of alachlor, an endocrine disruptor, in water by ozonation was investigated. Results showed that alachlor could not be completely mineralized by ozone alone. Many intermediates and final products were formed during the process, including aromatic compounds, aliphatic carboxylic acids, and inorganic ions. In evoluting these products, some of them with weak polarity were qualitatively identified by GC-MS. The information of inorganic ions suggested that the dechlorination was the first and the fastest step in the ozonation of alachlor.
Dechlorination of carbon tetrachloride by the catalyzed Fe-Cu process

The electrochemical reduction characteristics of carbon tetrachloride (CT) were investigated using cyclic voltammetry in this study. In addition, the difference in reduction mechanisms of CT between Master Builders' iron and the catalyzed Fe-Cu process was discussed. The results showed that CT was reduced directly on the surface of copper rather than by atomic hydrogen produced at the cathode in the catalyzed Fe-Cu process. The reduction was realized largely by atomic hydrogen in Master Builders'iron. The entire CT in 350 ml aqueous solution with 320 mg/L was reduced to trichloromethane and dichloromethane in 2.25 h when 100 g of scrap iron with Fe/Cu ratio of 10:1 (w/w) were used. Moreover, the reduction rate slowed with time. CT could be reduced at acidic, neutral and alkaline pH from solution by Fe-Cu bimetallic media, but the mechanisms were different. The degradation rate was not significantly influenced by pH in the catalyzed Fe-Cu process; in Master Builders' iron it clearly increased with decreasing pH. The kinetics of the reductions followed pseudo-first order in both cases. Furthermore, the reductions under acidic conditions proceeded faster than that under the neutral and alkaline conditions. The catalyzed Fe-Cu process was superior to Master Builders'iron in treating CT-containing water and this advantage was particularly noticeable under alkaline conditions. The reduction was investigated in the cathode (Cu) and anode (Fe) compartments respectively, the results showed that the direct reduction pathway played an important role in the reduction by the catalyzed Fe-Cu process. The catalyzed Fe-Cu process is of practical value.
Composition analysis of colored dissolved organic matter in Taihu Lake based on three dimension excitation-emission fluorescence matrix and PARAFAC model, and the potential application in water quality monitoring

Taihu Lake is one of the five biggest lakes in China. Surface water samples from 26 sampling sites of Taihu Lake were collected. Furthermore wet chemical analysis (COD_(Cr) and BOD_5) and measurement of three dimensional excitation-emission matrix (3DEEM) spectra in the laboratory have been conducted. Using parallel factor analysis (PARAFAC) model, three components of colored dissolved organic matter (CDOM) have been identified successfully, based on the analysis of 3DEEM data. The characteristics of the three components also have been described by comparing them to some components of CDOM, identified in earlier researches. Meanwhile, spatial variations of concentration for the three components in Taihu Lake have been analyzed, and the result indicates that the concentration of component 1 depends more on the situation of wastewater pollution and can be used as the indicator of wastewater pollution. The relationship between the concentrations of the three components and results of the wet chemical analysis show that none of the three components can be used as indicators of gross organic matter in water. However, the concentrations of all the three components have obvious linear relationships with the BOD_5 value, especially for component 1 (r = 0.72878). Finally, the potential applications of the composition analysis based on 3DEEM and PARAFAC model in water quality monitoring have been illuminated.
慢性阻塞性肺疾病急性加重期病原菌检出情况与病情评估

目的 研究慢性阻塞性肺疾病(COPD)急性加重期病原菌的分布、耐药情况与患者临床肺功能损伤情况、BODE积分之间的关系.方法 对2005年3月～9月我院慢性阻塞性肺疾病急性加重的患者108例合格痰标本进行细菌和真菌培养,对细菌培养阳性者作菌落鉴别和以K-B琼脂扩散法检测药物敏感性.所有患者均行肺功能检查并进行BODE指数评测.结果 108例患者的痰标本共分离出致病菌184株,其中G-菌117株(63.6%);G+菌38株(20.7%);真菌29株(15.8%).G-菌主要以铜绿假单胞菌为主(42株),该类细菌对酶抑制剂复方制剂、四代头孢、碳青酶烯类敏感.极重度COPD患者G-菌、真菌的检出率明显高于中重度COPD患者; BODE积分越高的患者G-菌和真菌的检出率也越高.结论 慢性阻塞性肺疾病急性加重期呼吸道感染仍以G-菌为主,其中以铜绿假单胞菌、大肠杆菌、克雷伯杆菌、不动杆菌最多见,酶抑制剂复方制剂及碳青酶烯类是治疗该类细菌的有效抗生素.G-菌(铜绿假单胞菌)和真菌可能是肺功能差、病情危重患者的优势菌.
Structural and Expressional Variations of the Mitochondrial Genome Conferring the Wild Abortive Type of Cytoplasmic Male Sterility in Rice

The so-called "wild abortive" (WA) type of cytoplasmic male sterility (CMS) derived from a wild rice species Oryza rufipogon has been extensively used for hybrid rice breeding. However, extensive analysis of the structure of the related mitochondrial genome has not been reported, and the CMS-associated gene(s) remain unknown. In this study, we exploited a mitochondrial genome-wide strategy to examine the structural and expressional variations in the mitochondrial genome conferring the CMS. The entire mitochondrial genomes of a CMS-WA line and two normal fertile rice lines were amplified by Long-polymerase chain reaction into tilling fragments of up to 15.2 kb. Restriction and DNA blotting analyses of these fragments revealed that structural variations occurred in several regions in the WA mitochondrial genome, as compared to those of the fertile lines. All of the amplified fragments covering the entire mitochondrial genome were used as RNA blot probes to examine the mitochondrial expression profile among the CMS-WA and fertile lines. As a result, only two mRNAs were found to be differentially expressed between the CMS-WA and the fertile lines, which were detected by a probe containing the nadS and orf153 genes and the other having the ribosomal protein gene rp15, respectively. These mRNAs are proposed to be the candidates for further identification and functional studies of the CMS gene.
Molecular Population Genetics of Rice Domestication

Domestication is a selection process that genetically modifies species to meet human needs. A most intriguing feature of domestication is the extreme phenotypic diversification among breeds. What could be the ultimate source of such genetic variations? Another notable outcome of artificial selection is the reduction in the fitness of domesticated species when they live in the wild without human assistance. The complete sequences of the two subspecies of rice cultivars provide an opportunity to address these questions. Between the two subspecies, we found much higher rates of non-synonymous (N) than synonymous (S) substitutions and the N/S ratios are higher between cultivars than between wild species. Most interestingly, substitutions of highly dissimilar amino acids that are deleterious and uncommon between natural species are disproportionately common between the two subspecies of rice. We suggest strong selection in the absence of effective recombination may be the driving force, which we called the domestication-associated Hill-Robertson effect. These hitchhiking mutations may contribute to some fitness reduction in cultivars. Comparisons of the two genomes also reveal the existence of highly divergent regions in the genomes. Haplotypes in these regions often form highly polymorphic linkage blocks that are much older than speciation between wild species. Genes from such regions could contribute to the differences between indica and japonica and are likely to be involved in the diversifying selection under domestication. Their existence suggests that the amount of genetic variation within the single progenitor species Oryza ruflpogon may be insufficient to account for the variation among rice cultivars, which may come from a more inclusive gene pool comprising most of the A-genome wild species. Genes from the highly polymorphic regions also provide strong support for the independent domestication of the two subspecies. The genomic variation in rice has revealing implications for studying the genetic basis of indica-japonica differentiation under rice domestication and subsequent improvement.
Logarithm Versus Square Root： Comparing Quantum Fisher Information

In classical statistics,the Fisher information is unique in the sense that it is essentially the only monotone Riemannian metric on the space of probability densities.In quantum theory,this uniqueness breaks down,and there are many natural quantum analogues of the Fisher information,among which two particular versions distinguish themselves by their intuitive and informational significance:The first has its origin in the skew information introduced by Wigner and Yanase in 1963 in the context of quantum measurement,and is defined via the square root of the density operator.The second arises from Helstrom's study of quantum detection in 1967,and is defined via the symmetric logarithmic derivative.The aim of this paper is to compare these two versions of quantum Fisher information,and to establish two informational inequalities relating them.
胃低度恶性神经纤维瘤致上消化道出血1例报道

患者,男性,48岁,主因黑便伴呕血1周于2005年11月8日入院,患者1周前无明显诱因出现黑便,伴有头晕、心慌,随后呕血两次,为鲜血含有大量凝血块及胃液,约1 500 ml,于当地医院保守治疗好转后转入我院,查上腹CT示:胃小弯侧肿物,向腔外突出,与肝左叶分界不清.
Theoretical Investigations on the Interaction Nature of Br_2 with HF, H_2O and NH_3

The interactions of HF, H_2O and NH_3 with Br_2 are investigated at the MP2(full)/ aug-cc-pVDZ level. It is found that two kinds of stable complexes, halogen-bonded and hydrogen- bonded complexes, exist between Br_2 and HF and between Br_2 and H_2O. The interaction energy analysis and natural population analysis (NPA) are conducted to these two kinds of complexes, indicating the halogen-bonded complexes are more stable than the corresponding hydrogen-bonded ones, and the binding energies of the former increase in the order HF＜H_2O＜NH_3, different from HF＞H_2O for the latter.