mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Half baudrate electrical clock based demultiplexing scheme for OTDM-DQPSK signal using SOA and optical filter

A demultiplexing scheme based on semiconductor optical amplifier(SOA)and optical filter for optical time division multiplexing differential quadrature phase shift keying(OTDM-DQPSK)system is proposed and investigated experimentally.With only a common half baudrate electrical clock modulated 33%duty cycle return-to-zero(RZ-33)optical clock signal as pump,this scheme is cost-effective,energy-efficient,and integration-potential.A proof-of-concept experiment is carried out for the demultiplexing of a 2×40-GBd OTDM-DQPSK signal.Error-free performance is demonstrated,and the average power penalty for both channels is about 3 dB.
硬膜外麻醉与腰-硬联合麻醉用于老年患者下肢骨折的效果

随着我国人口老龄化日趋严重,老年患者骨折的比例也明显上升,针对老年骨折手术患者的麻醉效果也逐渐引起临床的重视~(〔1,2〕)。本研究对我院收治的下肢骨折手术患者临床麻醉情况进行观察和分析。
互动式针刺法治疗假性球麻痹吞咽困难25例

假性球麻痹(pseudobulbar paralysis,PBP),也称假性延髓麻痹,临床表现以吞咽困难、构音障碍、饮水呛咳及情感障碍(强哭强笑)等为特征,其中吞咽困难为其最常见的症状之一,发病率高达51%~73%,目前尚无有效的治疗方法~(〔1〕)。一般认为,PBP是由脑卒中后双侧皮质脑干束病变所引起,也有学者认为单侧病变亦可引起PBP症状，且出现比率高于双侧病变~(〔2〕)。笔者对2008年以来在本院就诊的假性麻痹吞咽困难患者，在脑卒中常规治疗基础上，辅助以互动式针刺法，取得了满意的临床疗效，现总结如下。
老年人梅毒抗体检测假阳性率偏高的临床分析

2005年国家卫生部公布,在全国27种法定报告的甲、乙类传染病中,梅毒发病人数仅次于肺结核、乙型肝炎、细菌性痢疾和阿米巴性痢疾以及淋病而高居第5位(早在2002年为第7位)。梅毒的诊断依据主要是患者的病史、临床表现和实验室检查。实验室检查项目包括血清学检查(检测抗体)、直接检测梅毒螺旋体(暗视野显微镜、直接荧光抗体法等)和梅毒螺旋体核酸测定。不同年龄段抗梅毒螺旋体抗体(TP)阳性率~(〔1〕)，没有明确揭示60岁以上老年人TP阳性率及假阳性率。本文就临床检测老年人(60~90岁)梅毒血清学检测结果与对照组(15~59岁)进行临床对比分析。
高龄老年心力衰竭136例临床特点分析

老年人常并存多种疾病,机体内环境稳定性随增龄发生改变,抗病能力和器官的储备功能均显著下降,易患心力衰竭,且临床表现错综复杂。本文通过对不同年龄组心力衰竭临床表现的对比分析,观察老年心力衰竭的特点,以期为其早期诊治提供依据。
中药复方对无水乙醇型胃溃疡小鼠血清一氧化氮和胃黏膜组织前列腺素E_2表达的影响

目的探讨中药复方对小鼠无水乙醇型胃溃疡的作用及其机制。方法建立小鼠无水乙醇型胃溃疡模型,观察胃溃疡指数,用试剂盒测定血清一氧化氮(NO)含量,比色法测定胃黏膜中前列腺素E_2(PGE_2)的含量。结果中药复方高剂量组溃疡指数明显降低(P<0.01),而血清NO含量和胃黏膜中PGE_2的含量明显增高(P<0.05)。结论中药复方有一定的抗小鼠无水乙醇型胃溃疡的作用。
出生后Wistar大鼠肾AQP1表达水平

目的研究Wistar大鼠生后AQP1在肾脏发育过程中的表达水平。方法取出生后1 d、7 d、14 d、21 d、28 d、3 m、6 m、9 m、12 m、15 m和18 m的雄性Wistar大鼠的肾脏,10%中性甲醛固定,采用免疫组织化学SP法和图像分析方法,对肾脏的AQP1的表达水平进行半定量研究。结果生后1 d到生后4 w,AQP1的表达量降低;此后,AQP1的表达逐渐增多,到生后6个月达到高峰,随后表达趋于稳定。同时,AQP1在髓质的表达强于在皮质的表达。结论AQP1在生后肾的表达有明显的时间和区域性差别。
植物来源的胰脂肪酶抑制剂研究进展

胰脂肪酶抑制剂可通过抑制胰脂肪酶的活性，减少人体对饮食中脂肪的水解和吸收，对治疗肥胖症及预防其并发症有良好的效果。植物来源的天然化合物具有结构多样性、毒性低、来源广泛等特点，因而从植物中筛选安全、有效的减肥用胰脂肪酶抑制剂备受关注。如今已经从植物中分离得到一些多酚、黄酮、皂苷、萜类以及生物碱类化合物对胰脂肪酶有显著的抑制活性。本文综述了近年来植物来源的胰脂肪酶抑制剂研究进展。
Analytical Investigation of Prior Austenite Grain Size Dependence of Low Temperature Toughness in Steel Weld Metal

Prior austenite grain size dependence of the low temperature impact toughness has been addressed in the bainitic weld metals by in situ observations.Usually,decreasing the grain size is the only approach by which both the strength and the toughness of a steel are increased.However,low carbon bainitic steel with small grain size shows a weakening of the low temperature impact toughness in this study.By direct tracking of the morphological evolution during phase transformation,it is found that large austenite grain size dominates the nucleation of intragranular acicular ferrite,whereas small austenite grain size leads to grain boundary nucleation of bainite.This kinetics information will contribute to meet the increasing low temperature toughness requirement of weld metals for the storage tanks and offshore structures.
Modes of Grain Selection in Spiral Selector during Directional Solidification of Nickel-base Superalloys

The modes of grain selection in spiral selector were investigated by both a ProCAST simulation and experimental confirmation.The results show that the efficiency of grain selection in starter block is associated with the geometry shape.At the early stage of grain selection,the optimization of grain orientation is dominated by competitive grain growth,but the optimization of grain orientation in starter block is gradually dominated by geometry shape at the later stage of grain selection.Besides,the spiral part could also optimize the orientation of the selected single crystal when the initial angle is large enough,and the single crystal selection in spiral parts with different pitch lengths and initial angles is dominated by different modes.The simulation results agree well with experimental ones.
A Combined Clinicopathologic Analysis of 658 Urothelial Carcinoma Cases of Urinary Bladder

Objective To study the clinicopathological features of patients with urothelial carcinoma of the urinary bladder (UCB), and analyze the association of clinicopathological characteristics with tumor recurrence and progression. Methods Altogether 658 UCB cases in Fudan University Shanghai Cancer Center were collected from January 2006 to December 2010. The histopathologic materials and the clinical records were reviewed. Univariate and multivariate analyses were preformed to detect the association. Results The mean age of the patients was 61.97±12.97 years (range, 20-90 years). Male to female ratio was about 5:1. A total of 517 cases (78.6%) were superficial at the time of diagnosis (stage Ta/T1). The mean follow-up period was 22.36±24.92 months. Twenty-five patients lacking follow-up information were excluded in calculating recurrence and progression rates, the recurrence rate was about 37.0% (234/633), and progression rate about 6.2% (39/633). Three variables (grade, tumor growth pattern, and pathological stage) were found to be significant risk factors for tumor progression in univariate and multivariate analyses (P<0.05). Conclusions Most of the newly diagnosed UCB cases may be superficial diseases. Grade, tumor growth pattern, and pathological stage are associated with tumor progression of UCB.
口服硫酸铜死亡1例

本例调查还发现，林某对救治人员并未说明实情，导致在其抢救初期未能针对铜中毒治疗;而其为化工专业毕业，工作场所有硫酸铜试剂数瓶。经过分析调查最终确认林某口服硫酸铜死亡为自杀，其服药后因消化道烧灼疼痛大量饮水，并谎称遇袭求救，但终因中毒过深导致死亡。
潍坊汉族男性34个X-STR基因座遗传多态性

X-STR由于其独特的遗传方式,在法医学领域有重要的应用价值。本文应用荧光标记、复合扩增技术,对山东潍坊地区汉族人群34个X-STR基因座遗传多态性进行了调查,为丰富X-STR基因座群体遗传学数据及连锁关系和基因结构变异等方面的信息提供参考。
GOCE卫星测量恢复地球重力场模型的理论与方法

研究GOCE卫星测量恢复地球重力场模型的理论与方法。论文的主要工作和创新点有:(1)建立扰动重力梯度张量各分量没有奇异性的详细计算模型,解决重力梯度张量Txx分量在两极地区计算的奇异性难题。(2)系统研究卫星重力梯度数据向下延拓的解析法、泊松积分迭代法和卫星重力梯度数据格网化的移动平均法、反距离加权法、普通克里金法,建立相应的数学模型,导出相应的计算公式,并采用“直接法”和“移去恢复法”两种方案对其向下延拓和格网化效果进行了测试。
抑郁症自杀未遂患者心理护理干预效果分析

研究表明,抑郁症患者自杀行为比一般人群高20倍~(〔1〕),住院抑郁症患者有自杀意念者占70%~(〔2〕)。对高危人群,特别是有过自杀行为者进行积极的心理干预,应是自杀预防与危机干预的重中之重。为探讨心理社会支持与心理护理干预对住院抑郁症患者自杀行为的影响,降低其自杀率及死亡率,本研究选择江山市第四专科医院2007年5月-2010年3月住院的抑郁症自杀未遂患者进行6个月的临床心理干预。现将结果报告如下。
Genetic Mechanism of Dolomitization in Fengcheng Formation in the Wu-Xia area of Junggar Basin,China

The dolomitic rocks of the Fengcheng Formation are considered to be formed under special geologic conditions,and are significant hydrocarbon reservoir rocks in the Wu-Xia area in the Junggar Basin.Analyses of petrologic characteristics and stable isotope composition indicate that the dolomitizing host rock is volcanic and the dolomitizing fluids probably consists of brine from shore-shallow lakes with great evaporation and salinity in the Fengcheng Formation,which have formed under arid climatic conditions,as well as residual Mg-rich seawater from the underlying Jiamuhe Formation and Carboniferous.Dust tuff in the area has significant plagioclase content.Anorthite and labradorite hydrolysis by CO_2 can be coupled with calcite precipitation.Late Mg-rich brine percolated and replaced calcite formed in the early time,which lead to precipitate dolostones with different occurrences,such as graniphyric,random bedded or lumpy.The diagenetic dolostones with different occurrences resulting from particular formation conditions occurred in different tectonic settings.The dolomitizing fluid has been driven by the thermal convection flow generated by volcanic eruptions.At the same time,the overthrusts of the Wu-Xia growth fault have speeded up the flow of deep Mg-rich water upwards,and induced the water to quickly penetrate and horizontally migrate in the strata.Fracture is the major and the most important reservoir space in dolomitic reservoir of the Fengcheng Formation.Fracture and fault plays a decisive role in controlling the formation of dolostone and the distribution of favorable reservoirs.The deliverability of oil and gas is determined by the development and match relations of dissolved pores and fractures to a certain degree.
Revised Chronostratigraphic Framework of the Metamorphic Strata in the Jiangnan Orogenic Belt,South China and its Tectonic Implications

In a re-study of regional geology by the China Geological Survey(CGS),the key problem is in the stratigraphical division and correlation.According to the new isotopic dating of the Meso-and Neoproterozoic in China,there have been great changes in the strata correlation and tectonic explanation.The authors obtained four zircon sensitive high resolution ion micro-probe(SHRIMP) U-Pb datings from the bentonite of the Lengjiaxi Group(822±10 Ma,823±12 Ma and 834±11 Ma) and Banxi Group(802.6±7.6 Ma) in north Hunan Province,which is considered to be the middle part of the Jiangnan Orogenic Belt.On the basis of the zircon dating mentioned above,the end of the Wuling orogen is first limited in the period from 822 Ma to 802 Ma in one continued outcrop(Lucheng section) in Linxiang city,Hunan Province.Combining a series of new zircon U-Pb datings in the Yangtze and Cathaysia blocks,several Neoproterozoic volcanic events and distribution of the metamorphic rocks in the Jiangnan Orogenic Belt have been distinguished.In the context of the global geodynamics,it is useful to set up a practical and high precision chronological framework and basic and unified late Precambrian section in South China.
建立博士毕业生临时研究岗位制度,缓解承担国家重大科研项目人才紧缺问题

博士毕业生是国家科研事业最重要的后备人才队伍,国家为此投入了大量资源。从国际惯例来看,博士生及博士毕业生也是国家高端科学研究的相当一部分具体执行者。近年来,中国理工农医类博士毕业生每年均超过3万人,2010年达到34801人,其中相当比例的毕业生在攻读博士学位期间,跟随导师参与了国家重大科研项目研究,是研究团队的骨干力量。现在的问题是,博士研究生学制为3—5年(多数理工专业为4年),受限于现行科研管理和人事制度,大多数人毕业之后离校另谋他就,不能继续从事原来的研究,这不仅直接影响科研项目的进展,不利于高层次人才的充分有效使用,而且这种制度使中国大量承担国家高端课题的高校研究院所的课题组的骨干课题人员,始终只处于高端人才初期阶段(博士生4年),年复一年循环在这个层次上。为此,应借鉴发达国家经验,在相应高校及科研院所设立博士毕业生临时研究岗位制度,允许博士生导师聘用自己的博士毕业生继续参与科研项目研究,缓解承担国家重大科研项目人才紧缺问题。如果有1/3的博士毕业生在毕业后仍可参与研究至少1年,那么就相当于每年为国家增加了1万多名博士层次高端科技人力资源。这可以作为国家“青年千人计划”的补充或拓展。
无痛胃镜检查在急性上消化道疾病中的应用

目的探讨无痛胃镜在急性上消化道疾病中的检查效果、安全性,并对小儿急性上消化道疾病进行病因分析。方法对48例来本院就诊的急性上消化道疾病需行胃镜检查的患儿采用丙泊酚进行无痛胃镜检查,分析其病因。结果小儿急性上消化道疾病以腹痛、呕吐为主要症状,胃镜所见以胃溃疡及急性胃黏膜病变为主,消化道异物占12.5%。丙泊酚用量1.5~4.8 mg.kg~(-1),入睡时间20~50 s,检查时间1.8~4.1 min。胃镜检查过程中收缩压、舒张压均稍下降,血氧饱和度下降2例,心率有波动,呼吸变化不明显。结论在小儿急性上消化道疾病的诊断和治疗中,应用丙泊酚进行无痛胃镜检查安全有效。
An effective framework for characterizing rare categories

Rare categories become more and more abundant and their characterization has received little attention thus far. Fraudulent banking transactions, network intrusions, and rare diseases are examples of rare classes whose detection and characterization are of high value. However, accurate characterization is challenging due to high-skewness and nonseparability from majority classes, e.g., fraudulent transactions masquerade as legitimate ones. This paper proposes the RACH algorithm by exploring the compactness property of the rare categories. This algorithm is semi-supervised in nature since it uses both labeled and unlabeled data. It is based on an optimization framework which encloses the rare examples by a minimum-radius hyperball. The framework is then converted into a convex optimization problem, which is in turn effectively solved in its dual form by the projected subgradient method. RACH can be naturally kernelized. Experimental results validate the effectiveness of RACH.
Phosphorus release potential and pollution characteristics of sediment in downstream Nansi Lake, China

The research aimed to evaluate present and potential phosphorous pollution due to high sedimentary phosphorus load and release from sediment, when external phosphorus was reduced in downstream Nansi Lake. Pollution load of the sediment and overlying water was investigated. Kinetics and isotherms of adsorption/release of sedimentary phosphorus were studied to determine equilibrium phosphate concentration (EPC_0) and release potential. Kinetics of phosphorus adsorption on sediment and release from sediment were well described by both the pseudo-first-order rate equation and the pseudo-secondorder rate equation, but more appropriate to the pseudosecond-order rate equation with the adsorption/release capacity more close to the measured values, suggesting that the processes were chemically rate controlled and dependent on adsorption capacity. Soluble reactive phosphorus (SRP) sorption isotherms on sediment were best fitted by the modified Langmuir model indicating a monolayer adsorption. By comparing EPC_0 and SRP of water, the status (adsorption, releasing or in equilibrium) of sediment phosphorus could be determined. The sediments at site S1, S3, S4, S5, and S7 where the EPC_0s were greater than the SRPs, had a potential to release phosphorus into the water column. However, those sediments at S9, S10, and S12, where the EPC_0s were approximately equal to the SRPs, were in impermanent equilibrium with overlying water in status of phosphorus, the sediments can be likely to release phosphorus to the water column once the equilibrium was broken. Therefore, sedimentary phosphorus can be a secondary pollution source in downstream Nansi Lake.
Selective reduction of NO by photo-SCR with ammonia in an annular fixed-film photoreactor

Gaseous NO was photocatalytically reduced at room temperature by photo-assisted selective catalytic reduction (photo-SCR) with ammonia over TiO_2 in this study. NO reduction efficiency and N_2 selectivity were determined from gases composition at the outlet stream of photoreactor. Effect of operating conditions, e.g. light intensity and inlet concentrations of ammonia and oxygen, on the NO reduction efficiency and N_2 selectivity were discussed to determine the feasible operating condition for photocatalytic reduction of NO. Experimental results showed that selective catalytic reduction of NO with ammonia over TiO_2 in the presence of oxygen was a spontaneous reaction in dark. The photoirradiation on the TiO_2 surface caused remarkable photocatalytic reduction of NO to form N_2, NO_2, and N_2O under 254 nm UV illuminations, while almost 90% of N_2 selectivity was achieved in this study. The ammonia and oxygen molecules played the roles of reductant and oxidant for NO reduction and active sites regeneration, respectively. The reduction of NO was found to be increased with the increase of inlet ammonia and oxygen concentrations until specific concentrations because of the limited active sites on the surface of TiO_2. The kinetic model proposed in this study can be used to reasonably describe the reaction mechanism of photo-SCR.
Disturbance cues in freshwater prey fishes: Does urea function as an ‘early warning cue’ in juvenile convict cichlids and rainbow trout?

Freshwater vertebrate and invertebrate prey species commonly rely on chemosensory information, including non-injury released disturbance cues, to assess local predation threats. We conducted laboratory studies to (1) determine if urea can function as a disturbance cue in juvenile convict cichlids and rainbow trout and (2) determine if the background level of urea influences the behavioral response to a subsequent pulse of urea (‘background noise’ hypothesis). In the first series of trials, juvenile cichlids and trout were exposed to urea at varying concentrations (0 to 0.5 mg L~(-1) for cichlids and 0 to 1.0 mg L~(-1) for trout). Our results suggest that both cichilds and trout exhibited functionally similar responses to urea and conspecific disturbance cues and that increasing the concentration of urea results in an increase intensity of antipredator behaviour. In the second series of trials, we pre-exposed cichlids or trout to intermediate or high concentrations of urea (or a distilled water control) and then tested for the response to a second pulse of urea at at intermediate or high concentrations (versus a distilled water control). Our results demonstrate that pre-exposure to urea reduces or eliminates the response to a second pulse of urea, supporting the background noise hypothesis. Together, our results suggest that pulses of urea, released by disturbed or stressed individuals, may function as an early warning signal in freshwater prey species [Current Zoology 58 (2): 250-259, 2012].
Hitchhiker’s guide to genetic diversity in socially structured populations

When selection increases the frequency of a beneficial gene substitution it can also increase the frequencies of linked neutral alleles through a process called genetic hitchhiking. A model built to investigate reduced genetic diversity in Pleistocene hominins shows that genetic hitchhiking can have a strong effect on neutral diversity in the presence of culturally mediated migration. Under conditions in which genetic and cultural variants are transmitted symmetrically, neutral genes may also hitchhike to higher frequencies on the coattails of adaptive cultural traits through a process called cultural hitchhiking. Cultural hitchhiking has been proposed to explain why some species of matrilineal whales display relatively low levels of mitochondrial DNA diversity, and it may be applicable to humans as well. This paper provides a critical review of recent models of both types of hitchhiking in socially structured populations. The models’ assumptions and predictions are compared and discussed in the hope that studies of reduced genetic diversity in humans might improve our understanding of reduced genetic diversity in other species, and vice versa [Current Zoology 58 (1): 287-297, 2012].
Information entropy-based fitting of the disease trajectory of brain ischemia-induced vascular cognitive impairment

The present study investigated the disease trajectory of vascular cognitive impairment using the entropy of information in a neural network mathematical simulation based on the free radical and excitatory amino acids theories. Glutamate, malondialdehyde, and inducible nitric oxide synthase content was significantly elevated, but acetylcholine, catalase, superoxide dismutase, glutathione peroxidase and constitutive nitric oxide synthase content was significantly decreased in our vascular cognitive impairment model. The fitting curves for each factor were obtained using Matlab software. Nineteen, 30 and 49 days post ischemia were the main output time frames of the influence of these seven factors. Our results demonstrated that vascular cognitive impairment involves multiple factors. These factors include excitatory amino acid toxicity and nitric oxide toxicity. These toxicities disrupt the dynamic equilibrium of the production and removal of oxygen free radicals after cerebral ischemia, reducing the ability to clear oxygen free radicals and worsening brain injury.
Establishment of primary cultures of craniopharyngioma cells

Craniopharynigoma samples were collected from 36 patients. Out of the 36 samples, 29 achieved successful sub-culturing, with a success rate of 80.6%. Immunohistochemistry staining showed that cytokeratin-7 was positively expressed in the cytomembrane and cytoplasm of craniopharyngioma cells at 6-8 passages, confirming that all cultured cells were squamous epithelial cells. The doubling time of craniopharyngioma cells was 3 days, as confirmed by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. In this study, craniopharyngioma cells cultured in vitro were established; however, establishment of immortalized craniopharyngioma cell lines requires further research.
The gap junction blocker carbenoxolone enhances propofol and sevoflurane-induced loss of consciousness

General anesthetics induce loss of consciousness by inhibiting ascending arousal pathways, and they interfere with gap junction electrical coupling. The present study aimed to determine whether inhibition of gap junction-mediated signaling could influence general anesthetic-induced loss of consciousness. The general anesthetics sevoflurane and propofol were used. Intracerebroventricular administration of carbenoxolone, a gap junction blocker, significantly decreased the time to loss of the righting reflex (P < 0.05), but prolonged the time to recovery of the reflex (P < 0.05). Moreover, intracerebroventricular administration of carbenoxolone increased the sensitivity to sevoflurane, with a leftward shift of the loss of righting reflex dose-response curve, and decreased the 50% effective concentration of sevoflurane. These results suggest that the gap junction blocker carbenoxolone enhances propofol and sevoflurane-mediated general anesthesia.
On the Rates of the Other Law of the Logarithm

Let X,X_1,X_2,... be i.i.d. random variables, and set S_n = X_1+...+X_n, M_n= max_(k≤n) |S_k|, n ≥ 1. Let an = o(√n/ log n). By using the strong approximation, we prove that, if EX = 0, VarX = σ~2 > 0 and E|X|~(2+ε) < ∞ for some ε > 0, then for any r > 1,  We also show that the widest an is o(√n/ log n).
多发性肌炎/皮肌炎合并间质性肺疾病发病机制的研究进展

多发性肌炎/皮肌炎(polymyositis/dermatomyositis，PM/DM)是一类病因和发病机制尚不明确的主要累及横纹肌的非化脓性弥漫性炎症性肌病，常合并间质性肺疾病(interstitial lung disease，ILD),其发生率可高达40%~60%~([1])。多发性肌炎/皮肌炎合并ILD患者往往病情重,进展快，预后差，病死率在20%~30%M。继发于多发性肌炎/皮肌炎的ILD病程可分为急性、亚急性和慢性,慢性患者可出现急性加重；组织病理学类型可分为非特异性间质性肺炎(NSIP)、机化性肺炎(0P)、弥漫性肺泡损伤(DAD)、普通型间质性肺炎(UIP)以及混合型。目前对多发性肌炎/皮肌炎相关ILD治疗主要应用糖皮质激素和免疫抑制剂，部分可获得缓解，疗效取决于组织学类型，如0P型和细胞型NSIP可能对激素有效,其他病理类型则激素治疗效果差%并且有患者对多种免疫抑制剂耐药，或在免疫抑制剂减量后复发，导致治疗失败~([4-5])。由于多发性肌炎/皮肌炎相关ILD的发病率和病死率均较高，病情较凶险，因此积极探索这种难治性疾病的发病机制，逐渐成为近年来的研究热点问题，本文将多发性肌炎/皮肌炎相关ILD的发病机制的研究进展做一综述。
痛风骨关节损害的影像学研究进展

痛风是由于嘌呤代谢异常和（或）尿酸排泄受阻所致的一种异质性代谢性疾病，临床特点为高尿酸血症（hyperuricemia），脏器损害以骨关节、肾脏及心血管为主，常合并代谢结合证。据最新报道英国每年痛风的发病率为2.68‰，女性为1.32‰），且随年龄增长而增加~([1])。男性高发于40~69岁，女性发病多在绝经后。目前痛风发病有年轻化趋势。
三七种子质量检验规程研究

参考《国际种子检验规程》(ISTA)1996版和GB/T3543.1~3543.7-1995《农作物种子检验规程》的方法和要求,通过对三七地理标志产地云南省文山州不同种源的三七种子进行扦样、净度分析、真实性鉴定、千粒重测定、水分测定、生活力测定和发芽试验7项指标检验方法的研究,确定其标准检验方法,为三七种子质量分级标准的制定提供依据。
中国荞麦种业发展的SWOT分析

根据目前我国荞麦种业发展的情况,运用SWOT分析法对荞麦种业内部环境的优势和劣势、外部环境的机遇和挑战进行战略分析,目的在于探索出适合我国荞麦种业未来发展的正确战略对策,为荞麦种业保持可持续的竞争力提供参考。
中国种子进出口贸易现状分析及对策建议

通过对中国海关统计咨询室2000~2010年种子进出口贸易数据以及国际种子联盟数据分析,概括了中国目前种子进出口贸易现状以及存在的问题,并针对问题进行了原因分析,最后根据分析提出完善管理制度、开拓海外市场、加快育种研发等政策建议。
棉花抗低温种衣剂田间筛选及效果分析

目的:在大田观察棉花抗低温种衣剂防治烂种、烂芽及病虫害的效果。方法:2010年和2011年在新疆库尔勒市和玛纳斯县进行小区试验。结果:播期提前的情况下,2种抗低温种衣剂(新配方)与其它几种常规种衣剂同时进行对比试验,试验中,配方2的效果明显好于其它处理,最后产量比对照高出23.0%。结论:2年的试验研究表明,抗低温种衣剂对低温造成的烂种、烂芽具有明显防治效果,在棉花生产中,推荐使用棉花抗低温种衣剂。
中国香港地区患者资源中心访学的启示

主要介绍中国香港地区部分医院设立患者资源中心的情况。该中心以医用资源分析、评估、合理配置为前提,建立起全过程、多层次的医院服务,本着"关怀与分享"和"以患者为中心"的思想,以物质、技术和精神三种资源为手段,以患者及家属为服务对象,为患者提供治疗、康复和保健所需要的物质帮助、心理支持和技术支持,以供国内同行学习和借鉴。
抗阻力运动在2型糖尿病治疗中的研究进展

运动在改善和控制2型糖尿病(Type 2 Diabetes Mellitus,T2DM)中起着不可替代的作用,其中有氧运动被认为是控制和改善T2DM的最佳运动治疗方式,而无氧运动被认为是糖尿病患者的禁忌。抗阻力运动又称阻力运动或力量运动,是一种无氧运动,主要包括负重抗阻运动、对抗性运动、克服弹性物体运动和利用力量训练器械等。近年来,随着对T2DM发病机制及运动治疗的深入研究,抗阻力运动已被证实能明显改善T2DM患者的胰岛素敏感性、血糖、血脂、肌肉力量、血压和生活质量。本文综述了抗阻力运动对T2DM治疗中的研究进展,旨在为T2DM临床护理提供参考。
风轮菜属药用植物的研究进展

风轮菜属药用植物在我国分布广泛,药用价值前景良好。目前研究发现该属植物中主要含有黄酮和皂苷类成分,现代药理学研究表明其主要具有止血、抗菌、抗炎、降血糖、抗肿瘤、抗辐射等生物活性。主要对近年来该属植物的化学成分和药理活性进行综述,为该属植物的开发利用提供科学依据。
前十字韧带重建术后早期挤压螺钉断裂致关节内游离体一例报告

患者男，28岁。因打篮球扭伤左膝，伤后2个月，在外院行关节镜下前十字韧带(anterior cruciate ligament, ACL)重建术，可吸收挤压螺钉(Smith & Nephew公司，美国）固定。手术6周后，佩戴卡盘式膝关节固定支具下地进行功能康复；术后4个月可进行快走、慢跑等低强度运动。手术后近5个月一次慢跑中突然出现关节剧痛，感觉有异物卡住关节不能伸直，并在之后的2h关节出现明显的肿痛感。摄X线片检查，未见明显的骨质异常，也未见游离体。再行MR检查,ACL股骨隧道区见挤压螺钉位置不佳，且断裂存留部分卡于骨隧道内（图1),关节腔内髌上囊区有断裂的螺纹状游离物（图 2)。结合ACL重建术的病史，考虑为ACL损伤重建术后挤压螺钉固定位置不佳，致挤压螺钉疲劳断裂引起的游离体。
节段型人工假体重建骨干肿瘤切除后缺损的初步报告

发生在四肢长骨干的肿瘤，临床上保肢治疗常采用瘤段切除异体骨或自体骨重建骨缺损，但自体骨或异体骨移植重建存在骨愈合时间长、易感染、固定较为困难等问题。Abudu等~([1])在上世纪70年代首次使用节段型人工假体（intercalary prosthesis)进行四肢长骨干肿瘤切除后的重建，但由于长骨干的肿瘤发生率不高，临床资料有限，尽管国外此种假体的临床应用时间较长,但总的例数并不多。目前，国内尚无节段型人工假体重建长骨干瘤段骨切除后骨缺损的临床报告。为熟悉其手术操作技术、明确手术治疗效果，我们近期对股骨、肱骨和尺骨骨干肿瘤应用节段型人工假体重建瘤段切除后的骨缺损，并回顾性分析节段型人工假体的设计特点、优势和不足，目的在于探讨该治疗方法的可行性及评价其早期临床疗效。