mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
结肠癌行完整结肠系膜切除研究进展与展望

结直肠癌是常见的恶性肿瘤,随着生活方式和膳食结构的改变,结直肠癌的发病率不断上升,并且发病年龄趋于年轻化,但随着全直肠系膜切除(total mesorectal excision,TME)的提出,直肠癌外科治疗的根治性有了本质的提高,病人生存时间以及复发率有了相当大的改善。然而,现阶段结肠癌的外科治疗进展还不是很明显,尚缺乏一个金标准。2009年德国Hohenberger等提出了完整结肠系膜切除(complete mesocolic excision,CME)概念,该理念提出后国内外也有许多学者进行了相应的临床研究,并且取得了一定成果。本文就CME有关的理论基础和临床研究进展综述如下。
裸花紫珠片内服外敷治疗口腔溃疡的疗效观察

目的:观察裸花紫珠内服外敷治疗口腔溃疡的疗效,以求为临床合理用药提供依据。方法:选取2009年2月~2010年2月门诊就诊的口腔溃疡患者114例进行治疗,随机分组,每组38例,治疗组采用裸花紫珠片内服外敷,对照组1采用沙利度胺联合西地碘含片,对照组2采用西地碘含片进行治疗,观察各组治疗期间平均溃疡愈合时间、溃疡愈合情况和复发情况等发面以评价疗效。结果:3组治疗前后平均溃疡愈合时间、溃疡愈合和复发情况比较P<0.05,说明经过治疗都可以促进溃疡愈合;治疗后多组间数据比较采用方差分析得出治疗组与对照组1比较P>0.05;治疗组、对照组1分别于对照组2比较P<0.05,说明单独使用裸花紫珠片内服外敷和联合联合用药治疗口服溃疡疗效相当,比单独局部使用杀菌剂疗效好。结论:裸花紫珠内服外敷治疗口腔溃疡与联合用药治疗口腔溃疡疗效相当,具有良好止痛、消炎、促进创面愈合、减少复发等疗效。
急性左主干闭塞并双束支传导阻滞伴间歇性Ⅱ度房室传导阻滞一例

本例成功救治的有利条件是侧支循环的建立为抢救提供了时间窗。先前有研究表明此类患者的预后取决于右冠优势型或侧支循环的建立,本例患者心绞痛病史长达8年,近期症状加重30天,有建立侧支循环的时间基础,本例虽然急诊开通了罪犯血管,但由于病程长,心肌缺血受累面积大,导致传导束支的血供受累,在住院期间出现了间歇性的完全性右束支传导阻滞+左前分支阻滞,分析原因是由于束支传导速度的差异造成了心电图显示出来的左束支或右束支传导阻滞,本例患者右束支传导阻滞的出现是心脏传导束受损加重的心电图表现,对于ST段抬高型心肌梗死,无论梗死的部位,右束支传导阻滞是院内死亡的独立危险因素。本例患者有双束支传导阻滞伴间歇性Ⅱ度房室阻滞,植入永久起搏器指征为Ⅰ类,另外心电监护发现窦性停搏,改善远期预后的药物(如β受体阻滞剂)亦不敢在没有起搏器保驾下加用,遗憾的是本例患者及其家属拒绝安装永久起搏器。出院后第3个月随访患者,无胸痛发作,无心动过缓及晕厥发作,心电图仍提示:完全性左束支传导阻滞。关于本例患者的远期预后,需进一步密切随访。
Shifting cultivation effects on creek water quality around Barkal Upazila in Chittagong Hill Tracts,Bangladesh

We report the effects of shifting cultivation on water quality in 16 creeks investigated once in 2007 and twice in 2008 in 16 apparently similar small neighboring watersheds,each of 3 to 5 ha,at four locations around Barkal sub-district under Rangamati District of Chittagong Hill Tracts in Bangladesh.Concentrations of SO_4~(2-)and K~+,and pH in creek water were lower,and NO_3-N and Na + concentrations were higher in shifting-cultivation land compared to land with either plantation or natural forest or a combination of these cover types.Shifting cultivation effects on some water quality parameters were not significant due to change in land cover of the watershed between two sampling periods either through introduction of planted tree species or naturally regenerated vegetation.Conductivity and concentrations of HCO_3~-,PO_4~(3-),Ca~(2+) and Mg~(2+) in creek water showed no definite trend between shifting cultivation and the other land cover types.At one area near the Forest Range Office of Barkal,creek water pH was 5.8 under land cover with a combination of shifting cultivation and plantation.At this area Na~+ concentration in shifting-cultivation land ranged from 32.33 to 33.00 mg L~(-1) and in vegetated area from 25.00 to 30.50 mg L~(-1) in 2007.At another area,Chaliatali Chara,SO_4~(2-) concentration in a shifting-cultivation watershed ranged from 4.46 to 10.51 mg L~(-1),lower than in a vegetated watershed that ranged from 11.69 to 19.98 mg L~(-1) in 2007.SO_4~(2-) concentration in this shifting-cultivation area ranged from 1.28 to 1.37 mg L~(-1) and in the vegetated area from 1.37 to 3.50 mg L~(-1) in 2008.
Tree species as hosts for arbuscular mycorrhizal and dark septate endophyte fungi

A survey of 35 tree species(belonging to 28 genera in 19 families) in Aliyar,South India was carried out to ascertain their arbuscular mycorrhizal(AM) and dark septate endophyte(DSE) fungal status.All the tree species examined had AM association.AM and DSE colonization is reported for the first time in 20 and 14 species respectively.Cooccurrence of AM and DSE was observed in 14(40%) tree species.The extent of DSE colonization was inversely related to the extent of AM fungal colonization.Six tree species had Arum-type,18 had intermediatetype and 11 had typical Paris-type AM morphology.AM fungal spore morphotypes belonging to 11 species in two genera were isolated from the rhizosphere soil.AM fungal spore numbers were not related to the extent of AM colonization and Glomus dominated spore diversity.AM association individually and along with DSE were found respectively in the 63% and 44% of the economically important tree species.The occurrence of AM and DSE fungal association in economically important indigenous tree species indicates the possibility of exploiting this association in future conservation programmes of these species.
Fern diversity and biomass at Chilapatta reserve forest of West Bengal Terai Duars in sub-humid tropical foothills of Indian eastern Himalayas

We documented the status of fern diversity,biomass and carbon accumulation at Chilapatta Reserve Forest in Cooch Behar Wildlife Division,West Bengal.Stratified random nested quadrat sampling was adopted for analyzing the qualitative and quantitative characters.Nineteen fern species were recorded,of which two are yet to be identified.Identified species were of eight families and nine genera.Highest and lowest frequency recorded were 25.44 and 0.19 while relative frequency varied from 3.16 to 12.25.Fern density ranged from 93 to 13,403 individuals·ha~(-1).Most of the species were widely distributed.IVI values ranged from 7.54 to 37.45.The above ground portion of ferns accumulated the major portion of biomass and carbon.
Discrepancy in fine root turnover estimates between diameter-based and branch-order-based approaches:a case study in two temperate tree species

Fine root turnover plays a key role in carbon(C) budgets and nutrients cycles in forest ecosystems.However,the difference between branch-order-based and diameter-based approaches in estimating fine root turnover is still unclear.We studied root biomass turnover based on multiplying root standing biomass by turnover rate(inverse of median root longevity) in two Chinese temperate tree species,Fraxinus mandshurica Rupr.and Larix gmelinii Rupr.The minirhizotron(MR) technique was used to estimate longevities for first and second order roots,and total roots(R_(total)) apparent on the MR tube surface.The corresponding biomass for each root group was estimated by soil monolith.The difference in biomass turnover between R_(total) and the sum of the first and second order roots was used to represent the discrepancy between diameter-and order-based approaches.First order roots had shorter life spans and higher biomass turnover rates than the second order roots in both species.Biomass turnover estimated by the order-based method for F.mandshurica and L.gmelinii were 155.4 g m~(-2) a~(-1) and 158.9 g m~(-2) a~(-1),respectively,in comparison with 99.5 g m~(-2) a~(-1) and 117.7 g m~(-2) a~(-1) estimated by the diameter-based method,indicating that the diameter-based approach underestimated biomass turnover.The most probable reason was that the order-based method enhanced separation of the heterogeneous root population into relatively homogenous root groups with varying turnover rates.We conclude that separating fine root pool into different branch orders can improve the accuracy of estimates for fine root turnover,as well as the understanding of the belowground C allocation and nutrient cycling at ecosystem level.
Evaluation of regeneration potential of Pinus koraiensis in mixed pine-hardwood forests in the Xiao Xing'an Mountains,China

Large scale harvest of Korean pine(Pinus koraiensis) seeds as a food product in the mixed Korean pine-hardwood forest of northeastern China poses a serious threat to the sustainability and restoration of this endangered regional ecosystem.Seed collection over past decades greatly reduced the seed bank and subsequent seedling and sapling recruitment,and impacting a wide array of granivorous animals that rely on the pine seeds.We surveyed Korean pine seeds,including solid seeds(SS),insect consumed seeds(ICS) and other(animal) consumed(OCS) kernels,of the seed bank(forest floor and the top 10 cm of mineral soil),the seedlings and saplings from 1 m~2 sample plots in five forest types in Liangshui Nature Reserve(LNR) of the southern Xiao Xing'an Mountains in northeastern China to provide accurate information for assessing the Korean pine regeneration potential.The average number of pine seeds in the seed bank were 11.2 seeds/m~2,9.1 seeds/m~2,4.6 seeds/m~2,1.1 seeds/m~2,and 0.2 seeds/m~2 in Korean pine-basswood forest,mixed Korean pine-hardwood forest,mixed conifer-hardwood forest,white birch forests,and oak forests,respectively.In the first three forest types,percentages of SS(potentially viable seeds) were 11.2%,3.5% and 27.8%,respectively.The percentages of ICS(not viable seeds) were consistent at around 35%.The higher but variable percentages of OCS(not viable seeds) indicated high seed predation in these forests.Compared with other studies,we recorded higher percentages of seed damage,probably due to our survey approach and the increased depth of seed bank sampled in our study.Depletion of pine seeds in the seed bank greatly reduced seedling and sapling recruitment.Densities of pine seedlings varied from about 180 trees/ha in the mixed Korean pine-hardwood forest to about 5,400 trees/ha in the mixed conifer-hardwood forests and showed a high degree of spatial variation.Saplings were rare in the mixed Korean pine-hardwood forest,but ranged in the thousands in other forests.Large scale pine seed harvest has seriously threatened the sustainability of the mixed Korean pine-hardwood forest ecosystem.Scaling down the seed harvest or supplemental planting of pine saplings are urgently needed to maintain the health of the existing Korean pine forests and to restore this endangered ecosystem.
Microstructural changes in memory and reticular formation neural pathway after simple concussion

Patients with concussion often present with temporary disturbance of consciousness. The microstructural and functional changes in the brain associated with concussion, as well as the relationship with transient cognitive disorders, are currently unclear. In the present study, a rabbit model of simple concussion was established. Magnetic resonance-diffusion tensor imaging results revealed that the corona radiata and midbrain exhibited significantly decreased fractional anisotropy values in the neural pathways associated with memory and the reticular formation. In addition, the apparent diffusion coefficient values were significantly increased following injury compared with those before injury. Following a 1-hour period of quiet rest, the fractional anisotropy values significantly increased, and apparent diffusion coefficient values significantly decreased, returning to normal pre-injury levels. In contrast, the fractional anisotropy values and apparent diffusion coefficient values in the corpus callosum, thalamus and hippocampus showed no statistical significant alterations following injury. These findings indicate that the neural pathways associated with memory and the reticular formation pathway exhibit reversible microstructural white matter changes when concussion occurs, and these changes are exhibited to a different extent in different regions.
外伤后脑梗死因果关系鉴定1例

本例被鉴定人因右侧胫腓骨骨折人院治疗2个半月后发生脑梗死,导致偏瘫。从发病时间来分析,首先可排除脑脂肪栓塞。被鉴定人高龄、既往糖尿病史20年,本身为脑梗死高危人群,因下肢骨折入院后长期卧床,使肌肉处于松弛状态,造成血流缓慢、黏滞性上升,可形成脑血栓或在他处形成血栓后脱落,进人脑动脉系统造成栓塞。综合分析认为,被鉴定人因外伤致下肢骨折,人院后长期卧床,在自身基础疾病等因素的作用下最终导致脑梗死的发生,因此外伤与脑梗死之间应属间接因果关系。
小肠系膜包裹症1例

小肠系膜包裹症无特异性临床表现。一般表现为阵发性腹痛、腹胀、恶心、呕吐,腹部包块等急性或慢性肠梗阻症状。病程长短不一,可自行缓解。影像学检查特别是CT扫描有助于该病的术前诊断。CT扫描可显示为腹部软组织包块,其内可见肠管内气体影及被卷人的肠系膜,其外被膜状影包裹。MSCT还可进行冠状位、矢状位及多平面重组(MPR),显示聚集肠袢的整体形态,在腹膜腔的位置,以及纤维包膜与周围结构的关系。CT扫描为临床提供了更有价值的信息可指导临床。治疗。消化道造影示腹部包块内为折叠的小肠,肠袢排列成菜花状,加压后肠管不易分离。本例患者术前X线腹部平片及CT扫描示左中上腹巨大软组织包块,包块内可见低密度气体影及肠系膜血管卷入包块内。口服造影剂后CT扫描可见充盈造影剂的肠管聚拢呈菜花状禁锢在包块内并显示输人袢及输出袢,诊断为小肠系膜包裹症。本病无特异性临床表现,术前确诊较困难。笔者认为当腹部平片表现为左中上腹巨大包块,其内有低密度气体影,尤其是CT平扫显示肠系膜血管及含气肠管卷人包块内,临床有或无急、慢性肠梗阻症状,腹部可触及肿块,剧烈腹痛与体征不符时,应想到本病的可能。
微小RNAs与糖尿病肾病

微小RNAs(microRNAs,miRNAs)是一类内源性非编码单链小分子RNA,通过介导靶mRNA降解或靶基因翻译抑制来调节靶基因的表达。糖尿病肾病是糖尿病的主要并发症,也是终末期肾脏病的首位病因,严重威胁人类健康。目前研究表明,miRNA在糖尿病肾病的发生、发展过程中发挥重要作用。一些miRNA的表达异常(如miR-192、miR-200s、miR-29a、miR-29c、miR-21、miR-377和miR-93等的上调或下调)与糖尿病肾病的发生、发展密切相关。因此,深入研究miRNAs在糖尿病肾病发病中的作用可能为糖尿病肾病的治疗提供新的线索。
缅怀著名动物遗传学家吴仲贤教授

2011年5月12日,吴仲贤教授百年诞辰纪念会暨塑像揭幕仪式在位于北京西郊的中国农业大学隆重举行,柯炳生校长高度评价了吴仲贤教授的治学精神,农业部原常务副部长刘成果,农业部原副部长洪绂曾,原北京农业大学党委副书记吴汝焯,中国科学院院士吴常信,英国皇家科学院院士杨子恒,中国农业大学副校长马寅生,中国农业大学党委副书记张东军,吴仲贤教授的儿子、美国犹他大学教授吴咏时,北京大学教授戴灼华,农业部畜牧业司奶业管理办公室主任王俊勋,全国畜牧总站党委书记何新天,中国畜牧兽医学会秘书长阎汉平,中国遗传学会副秘书长安锡培,中国遗传学会办公室主任王长城,《遗传学报》、《遗传》编辑室主任李绍武,吴仲贤教授的部分弟子,中国农业大学动物科技学院的部分师生等共100余人专程赶来参加纪念活动,表达对吴先生的景仰与怀念之情。
46,XX,t(5;13)(p15;q21),t(9;21)(q22;q22), ins(14;2)(q22;q22q36)染色体异常一例

讨论本例患者为涉及6条染色体的结构异常,2、5、9号染色体的部分单体,13、14号染色体单体。核型中多了两条来源不明的染色体,且5号,21号多了一部分染色体片段亦来源不明。染色体单体因遗传物质丢失较多,往往具有明显的临床表现。本文报道的患者由于表型及智力均正常,可推测其基本无遗传物质丢失,两条mar及5、21号多出的染色体为其他染色体断裂重接组成,可通过荧光原位杂交、频谱核型分析或者基因序列比较等技术进一步探索。建议患者的父母行染色体检查以明确异常染色体的来源。患者有明显肝功能异常,但无自觉症状,可能与脂肪肝有关,但不能排除与染色体异常有关,需要进一步研究。
瑞替加滨的研究进展Δ

目的:为临床使用瑞替加滨和新药研发提供参考。方法:查阅文献,从抗癫痫动物研究、其他辅助作用研究、作用机制、安全性研究4个方面进行综述。结果与结论:瑞替加滨作为第1个以KCNQ型钾离子通道为靶点的药物,与其他抗癫痫药作用机制完全不同,它的出现是抗癫痫药一个新亮点,引起人们极大的兴趣;其他方面的生理作用如神经保护、神经疼痛、高血压(尤其是肺动脉高压)、脑卒中等方面的机制还有待研究。现有实验数据提示,瑞替加滨相对安全,在中枢和泌尿系统出现的不良反应或毒性作用对临床研究有重要的提示意义。
双歧三联杆菌联合5-氨基水杨酸治疗溃疡性结肠炎的疗效

溃疡性结肠炎(UC)是一种病因和发病机制尚不十分清楚的直肠和结肠慢性非特异性炎性反应性疾病,以慢性过程、反复发作为其特征,多见于青壮年。UC的发病数在我国逐年增多,患病率为11.6/10万,目前临床上UC的治疗仍以抗炎和调节免疫为主。近年来有关益生菌辅助治疗UC的文献时有报道。对我院应用益生菌联合5-氨基水杨酸治疗62例UC患者进行分析,现报道如下。
ERCP、EST联合LC治疗胆囊、胆总管结石的临床分析

目的评价逆行性胰胆管造影(ERCP)+乳头括约肌切开术(EST)联合腹腔镜下胆囊切除术(LC)治疗胆囊结石合并胆总管结石的临床效果。方法2009年8月-2011年8月我院收治胆囊结石合并胆总管结石患者15例,先行ERCP+EST,再行LC治疗。结果15例患者ERCP+EST均获得了成功,结石全部取出。12例1周内行三孔法或四孔法LC;1例患者术后并发胰腺炎,治愈后两周行LC术;另1例因年龄较大,术后1个月行LC术。全部病例无中转开腹及术后未发现残留结石。结论ERCP、EST联合LC用于治疗胆囊、胆总管结石具有效果好,创伤小、术后并发症少、恢复快等优点,临床疗效满意。
脊髓脊膜膨出的手术治疗

目的探讨脊髓脊膜膨出(MMC)的手术时机和治疗效果。方法回顾性分析82例MMC患儿的临床资料。男38例,女44例;年龄1 d ~7岁,平均1.4岁。MMC位于腰、骶部75例,位于颈椎部5例及位于胸椎部和胸腰部各1例,患儿均经相应部位X线正侧位片和MRI确诊,术前常规均行体感诱发电位和肌电图等相关神经电生理检查,全部患儿予手术治疗。术前术后均行尿动力学检查。结果82例均行手术治疗,术后随访3~12个月,随访期复查患儿症状缓解,其中治愈28例,好转45例,无变化5例,恶化4例,总有效率89.1%。结论常规脊膜膨出切除、椎管扩大探查、脊髓栓系松解和脊膜修补术是MMC目前唯一有效的治疗方法。
3D printing robot: model optimization and image compensation

A novel 7-axis robot for industrial large 3D printing applications is presented in this paper, which is developed by Institute of Robotics and Automatic Information System, Nankai University. Base on the prototype, the mechanism on three-dimensional printing is deeply dissected. By investigating the reason of color distortions in 3D printing, a novel multistep compensation algorithm based on model optimization and image compensation is developed. Finally, the experimental results show the performance of the 3D printing robot platform and the proposed algorithms.
超声造影对肺外周型感染性病变的鉴别价值

正常肺组织充满气体不被超声所穿透,一直以来超声在肺部病变的应用受到限制。外周型肺部病变靠近胸膜可被超声测及,使超声检查成为可能。本研究主要探讨肺部感染性病变的常规超声及超声造影表现,旨在提高其超声诊断能力。
The short-term effects of temperature and free ammonia on ammonium oxidization in Granular and Floccular Nitrifying System

The short-term effects of temperature and free ammonia (FA) on ammonium oxidization were investigated in this study by operating several batch tests with two different partial nitrification aggregates, formed as either granules or flocs. The results showed that the rate of ammonium oxidation in both cultures increased significantly as temperature increased from 10 to 30 °C. The specific ammonium oxidation rate with the granules was 2-3 times higher than that with flocs at the same temperature. Nitrification at various FA concentrations and temperatures combination exhibited obvious inhibition in ammonium oxidation rate when FA was 90 mg·L~(-1) and temperature dropped to 10 °C in the two systems. However, the increase in substrate oxidation rate of ammonia at 30 °C was observed. The results suggested that higher reaction temperature was helpful to reduce the toxicity of FA. Granules appeared to be more tolerant to FA attributed to the much fraction of ammonia oxidizing bacteria (AOB) and higher resistance to the transfer of ammonia into the bacterial aggregates, whereas in the floc system, the bacteria distributed throughout the entire aggregate. These results may contribute to the applicability of the nitrifying granules in wastewater treatment operated at high ammonium concentration.
RON受体型酪氨酸激酶在胰腺癌侵袭及转移中的作用

RON在胰腺癌中过度表达并保持连续的活性,对RON在胰腺癌发生发展过程中所起作用的研究己经取得很大的进展,但某些有关RON促进胰腺癌侵袭及转移机制的学说还有待确认。EMT机制是指上皮细胞通过特定程序转化为具有间质表型细胞的生物学过程。参与这一过程的细胞内信号转导途径有受体酪氨酸激酶Ras-MAPK途径、Src激酶、Rho家族激酶、PI3K/AKT途径、Wnt信号通路、转录因子等。同时因为RON参与了Ras-MAPK和PI3K/AKT途径,Ras-MAPK和PI3K/AKT信号转导又参与了EMT,所以RON也可能通过Ras-MAPK和PI3K/AKT途径参与EMT,推测这可能是RON促进胰腺癌的侵袭与转移的一个机制。尽管目前关于胰腺癌的研究还是非常有限,但是随着对肿瘤发生分子机制认识的深入,必将发现新的胰腺癌特异性标志物,为早期诊断提供条件,而RON指向的靶向疗法也必将成为有潜力的候选者。
Inactivated Sendai Virus Suppresses Murine Melanoma Growth by Inducing Host Immune Responses and Down-regulating β-catenin Expression

Objective This paper aims to investigate the anti-tumor mechanism of inactivated Sendai virus (Hemagglutinating virus of Japan envelope, HVJ-E) for murine melanoma (B16F10). Methods The murine dendritic cells (DCs) were treated with HVJ-E, and then the cytokines secreted from DCs and costimulation-related molecules on DCs were measured. Meanwhile, the expression of β-catenin in HVJ-E treated murine melanoma cells was detected. In addition, HVJ-E was intratumorally injected into the melanoma on C57BL/6 mice, and the immune cells, CTL response and tumor volume were analyzed. Results HVJ-E injected into B16F10 melanoma obviously inhibited the growth of the tumor and prolonged the survival time of the tumor-bearing mice. Profiles of cytokines secreted by dendritic cells (DCs) after HVJ-E stimulation showed that the number of cytokines released was significantly higher than that elicited by PBS (P<0.05). The co-stimulation-related molecules on DCs were comparable to those stimulated by LPS. Immunohistochemical examinations demonstrated the repression of β-catenin in B16F10 melanoma cells after HVJ-E treatment. Meanwhile, real-time reverse transcription PCR revealed that HVJ-E induced a remarkable infiltration of CD11c positive cells, chemokine ligand 10 (CXCL10) molecules, interleukin-2 (IL-2) molecule, CD4 + and CD8 + T cells into HVJ-E injected tumors. Furthermore, the mRNA expression level of β-catenin in the HVJ-E injected tumors was also down-regulated. In addition, B16F10-specific CTLs were induced significantly after HVJ-E was injected into the tumor-bearing mice. Conclusion This is the first report to show the effective inhibition of melanoma tumors by HVJ-E alone and the mechanism through which it induces antitumor immune responses and regulates important signal pathways for melanoma invasion. Therefore, HVJ-E shows its prospect as a novel therapeutic for melanoma therapy.
Comparison of Concentrations of Lead and Cadmium in Various Parts of The Femur Head in Patients after Arthroplasty of The Hip Joint in Northwest Poland

Objective To determine the concentrations of lead (Pb) and cadmium (Cd) in three kinds of materials (cartilage, cortical bone, and cancellous bone) of the femur head obtained from patients in the process of operation. Methods Concentrations of Pb and Cd were determined in selected parts of the femur head of 30 patients after total hip arthroplasty, using ICP-AES (atomic absorption spectrophotometry). Results Pb contained the highest concentration in cortical bone, while Cd did so in cancellous bone. There were statistically significant differences in the concentrations of both elements between the cartilage and cortical bone, and also differences in the concentration of Pb between the cartilage and cancellous bone. There were no significant differences in the concentrations of Pb or Cd between cortical and cancellous bone. Conclusion Comparative studies on toxic metals should take into account both analogous bones and their fragments, as even if they come from the same kind of bones (e.g. femur head), clear differences exist in concentrations of heavy metals related to the sampling site and type of tissue (cartilage, cortical bone, and cancellous bone).
New Research Progress on the Pre-Sinian Tectonic Evolution and Neotectonics of the Huangling Anticline Region,South China

In this paper the authors briefly introduce and review the new progress of the newly dis- covered Proterozoic Miaowan (庙湾) ophiolite and Neoproterozoic Huangling (黄陵) granitoids in the southern Huangling anticline in the Yangtze craton, and the tectonic evolution significance of assemblage and breakup of Rodinia and Columbia supercontinent in South China.
SHRIMP Zircon U-Pb Ages and Geochemical Characteristics of the Neoproterozoic Granitoids in the Huangling Anticline and Its Tectonic Setting

SHRIMP zircon U-Pb dating of the Neoproterozoic Maoping (茅坪) series (Sandouping (三斗坪) rock suite) granites exposed in the southern part of the Huangling (黄陵) anticline shows that the formation time of Sandouping biotite-hornblende tonalite intrusion, Jinpansi (金盘寺) hornblende-biotite tonalite intrusion, and Longtanping (龙潭坪) monzogranite are 863±9, 842±10, and 844±10 Ma, respectively. Their geochemical features include A/CNK=0.98-1.06, from metaluminous to weakly peraluminous, δ=1.37-1.53, Sm/Nd=0.17-0.24, and Rb N /Yb N =1.1-3.62. These indicate that the granite rocks are supersaturated SiO 2 calc-alkaline granitoids. The characteristic of Sr-Nd isotopic composition is that the values of ε Nd (t) and ε Sr (t) are -12.4 to -11.0 and 20.2-32.2, respectively. It also suggests that the material source of the granite rocks mainly originated from the crust, and they formed in a volcanic arc tectonic environment. These facts suggest that the occurrence of Neoproterozoic granitoids in the southern part of the Huangling anticline should be related to an arc environment along an active continental margin caused by southward subduction of oceanic crust beneath the northern Yangtze craton, and the formation age is not later than 863 Ma.
Structure of V_2O_5-P_2O_5-Sb_2O_3-Bi_2O_3 glass

The structure of V_2O_5-P_2O_5-Sb_2O_3-Bi_2O_3 glass and its state of crystallization were studied by means of infrared spectroscopy and X-ray diffraction analysis. The results indicate that, in this glass, V and P exist mainly in the form of a single-stranded linear (VO_3)_n and an isolated (PO_4) tetrahedral with no double bond. Partial V and P are connected through O, forming an amorphous structure of layered vanadium phosphate. Trivalent Sb~(3+) and Bi~(3+) open the V=O bond and appear in interlayers, so a weak three-dimensional structure is connected successfully. Along with the substitution of Sb_2O_3 for partial V_2O_5 or that of P_2O_5 for partial V_2O_5, the network structure of the glass is reinforced, and the crystallization is reduced.
Kinetics of leaching refractory gold ores by ultrasonic-assisted electro-chlorination

The resources of refractory gold ores are abundant, and their effective treatment can bring good economic benefits. This paper in-vestigated the kinetics of leaching gold from refractory gold ores by ultrasonic-assisted electro-chlorination. The effects of ultrasound time ratio, initial hydrochloric acid concentration and leaching temperature on the kinetic parameters were discussed. It is found that the leaching ratio goes up with all the factors increasing. The reaction kinetics is controlled by diffusion. When ultrasound improves the diffusion by re-ducing the diffusion resistance, the activation energy increases to 37.1 kJ/mol.