mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
FGF-7 facilitates the process of psoriasis by inducing TNF-α expression in HaCaT cells

The purpose of this study was to uncover the mechanism of tumor necrosis factor (TNF)-α induction by fibroblast growth factor-7 (FGF-7) in human HaCaT cells and the potential role of FGF-7-specific antibody F-9 in psoriatic therapy. TNF-α expression in HaCaT cells induced by FGF-7 was analyzed by quantitative polymerase chain reaction, western blot analysis, and enzymelinked immunosorbent assays. In vivo, the BALB/c mouse psoriasis model established by topical application of imiquimod (IMQ) was used to determine the role of FGF-7-specific antibody (F-9) in skin inflammation. We found that induction of TNF-α expression by FGF-7 in HaCaT cells was suppressed by FGF-7-specific antibody F-9. Western blot analysis results showed that FGF-7 induced TNF-α expression in HaCaT cells via the FGF receptor 2 (FGFR2)/AKT/NF-κB signaling pathway. In vivo, F-9 could significantly ameliorate the inflammations in a mouse psoriatic model evaluated by Psoriasis Area and Severity Index scores and ear thickness, whichwas consistent with the results of hematoxylin-eosin staining, immunohistochemistry assay, and western blot analysis. These results indicate that FGF-7 induces TNF-α expression in HaCaT cells and FGF-7 antibody F-9 alleviates IMQ-induced psoriasiform in mice. Therefore, FGF-7/FGFR2 signaling pathway is a potential target for psoriasis treatment.
Grazing Management Plans improve pasture selection by cattle and forage quality in sub-alpine and alpine grasslands

Over the last decades, the reduction of manpower for herd management has led to an increase of continuous grazing systems (CGS) in the Italian Alps, which allow cattle to roam freely. Under CGS, due to high selectivity, livestock exploit grasslands unevenly, over- and under-using specific areas at the same time with negative effects on their conservation. To counteract these effects, a specific policy and management tool (i.e. Grazing Management Plan) has been implemented by Piedmont Region since 2010. The Grazing Management Plans are based on the implementation of rotational grazing systems (RGS), with animal stocking rate adjusted to balance it with grassland carrying capacity. A case study was conducted on alpine summer pastures to test the 5-year effects produced by the implementation of a Grazing Management Plan in grasslands formerly managed under several years of CGS on 1) the selection for different vegetation communities by cattle, 2) the abundance of oligo-, meso-, and eutrophic plant species (defined according to Landolt N indicator value), and 3) forage yield, quality, and palatability. A total of 193 vegetation surveys were carried out in 2011 and repeated in 2016. Cows were tracked yearly with Global Positioning System collars to assess their grazing selectivity, and forage Pastoral Value (PV) was computed to evaluate forage yield, quality, and palatability. Five years after RGS implementation, cow selectivity significantly decreased and the preference for the different vegetation communities was more balanced than under CGS. The abundance of meso- and eutrophic species increased, whereas oligotrophic ones decreased. Moreover, the abundance of moderately to highly palatable plant species increased, whereas non-palatable plant species decreased, with a consequent significant enhancement of the PV. Our findings indicate that the implementation of Grazing Management Plans can be considered a sustainable and effective management tool for improving pasture selection by cattle and forage quality in mountain pastures.
Recent research progress in geochemical properties and restoration of heavy metals in contaminated soil by phytoremediation

Heavy metals are widely distributed contaminants in natural environments and their potential threats to human health have attracted worldwide concerns due to the food chain. Therefore, great efforts have been made to reduce them to a safe level in soil. Compared with the traditional methods, the method using plants to remove them has been accepted as a feasible and efficient way. Herein, the geochemical behavior of heavy metals and the restoration methods with phytoremediation were reviewed. In addition, issues on heavy metal speciation as well as its influencing factors, phytoremediation mechanism, phytoremediation effect and vegetation selection principle used for phytoremediation were discussed.
科技创新和少数民族地区产业结构优化升级关系的实证研究——以内蒙古自治区为例

以1997-2007年度内蒙古自治区的时间截面数据为基础,从内蒙古科技活动与内蒙古国民产业经济结构调整的量化关系角度,对内蒙古科技活动的经济效果进行了实证分析.结果表明,不同的科技活动投入要素对于国民产业经济结构的影响程度显著不同.要充分发挥科技创新推动作用,必须引入新要素或要素的新组合,结合内蒙古发展实际,培育区域创新系统,创新人才机制,加大科技与教育投入,完善政府服务体系,增强自主创新能力.
西部信息化与经济增长的关系研究——以陕西为例

以陕西为例,分析信息化与经济增长的关系.运用最小二乘法对陕西的经济增长和信息化进行回归分析,结果表明,信息化水平与陕西经济发展有较强的相关性,信息化指数每提高1%,国内生产总值指数提高0.182 512%,表明信息化可以极大地带动陕西经济的发展.
香芍软胶囊CO_2超临界萃取工艺研究

超临界流体萃取技术是应用一种在超临界压力和临界温度以上相区内的气体即超临界流体(SFE)作为萃取剂,从液体或固体中萃取出待分离组分的一种物理萃取技术,该技术具有快速、便捷、节能、出膏率低等优点优于传统提取、分离技术,在中草药有效成分研究中受到广泛关注~([1,2]).
荔枝草抗氧化活性研究

荔枝草(Salvia plebeia R.Br.)系唇形科鼠尾草属植物,具有清热解毒、利尿消肿、凉血止血作用.临床用于抗菌消炎、镇咳祛痰等~[1],Powell等1976年和Plattner等1978年报道了荔枝草的木脂素成分~([2,3]);Gareía-Alvarez等1985年报道了荔枝草的二萜类成分~[4].
丹参注射液对抗Thy-1系膜增生性肾炎模型大鼠TNF-α、Ⅳ-C水平的影响

目的:探讨丹参注射液对抗Thy-1系膜增生性肾炎(MsPGN)模型大鼠肿瘤坏死因子α(TNF-α)及Ⅳ型胶原(ⅣC)水平的影响.方法:尾静脉单次注射抗大鼠胸腺细胞血清(ATS)诱发MsPGN大鼠模型,将大鼠随机分为空白组、模型组、丹高组、丹低组、肝素组,每组9只.各实验组于第14天处死大鼠.放免法测定血清TNF-α、Ⅳ-C的含量,病理图像分析系统计算肾小球内系膜细胞(GMC)数及系膜基质(ECM)阳性面积比值.结果:①模型组血清.TNF-α、Ⅳ-C水平均明显高于空白组(P＜0.05);②丹高组TNF-α水平明显低于模型组(P＜0.05),而丹低组、肝素组与模型组比较无显著差异(P＞0.05).③丹高组、肝素组血清Ⅳ-C水平明显低于模型组(P＜0.05),但两组间无统计学意义(P＞0.05).④丹高组、肝素组GMC及ECM阳性面积比值与模型组比较均有显著性差异(P＜0.01).⑤血清TNF-α、Ⅳ-C水平与GMC数、ECM相对增生面积呈显著正相关.结论:高剂量丹参注射液可降低MsPGN模型大鼠血清TNF-α、Ⅳ-C水平,抑制GMC增生,抑制ECM积聚,可能是治疗MsPGN抗凝以外的的作用机制之一.
花梨木挥发油的提取及其包合物研究

目的:对海南花梨木挥发油的提取工艺条件和挥发油包合前后的成分进行研究.方法:用水蒸气蒸馏法提取花梨木挥发油,采用正交实验筛选挥发油提取的最佳工艺条件,以β-环糊精对挥发油进行包合,通过DSC-TGA对包合物进行了热稳定性研究,并用GC-MS对包合前后挥发油成分进行分析.结果:最佳的提取工艺条件为:m(花梨木):V(水)=70:800(g/mL),浸泡2 h,蒸馏提取5 h,挥发油收率可达2.15%.挥发油包合前通过GC-MS技术分离出27种组分,鉴定出26种化合物,占总峰面积的99.72%.包合前后挥发油主要共有成分为:(E)-2-长松针烯-4-醇、2,4-二甲基-2,4-庚二烯醛、橙花叔醇、2-(5-甲基-呋喃)丙醛、1,1-二甲基-2.(2-甲基-2-丙烯基)-环丙烷.结论:用水蒸气蒸馏法可以很好提取花梨木挥发油,挥发油包合后热稳定性增加,包合前后挥发油的主要成分没有发生改变.
人用疫苗异常毒性检测技术的研究进展

疫苗的安全性一直备受关注,也是生物制品检定领域的研究热点之一.在安全性试验中,异常毒性检测(Abnormal toxicity test,ATT)是常规的检测项目.目前,国内外对于异常毒性检测存在争议,认为其缺乏专属性和科学性.本文对人用疫苗异常毒性检测的现状及异常毒性检测技术的研究进展作一评述.
Process modeling for electron beam welding of Ti-6Al-4V

Using ANSYS software, a finite element model for electron beam welding of 14.5 mm thick Ti-6Al-4V alloy plate is developed by a sequentially coupled thermal-mechanical analysis method. For the purpose of model validation, welding trial is carried out. Meanwhile, fusion zone dimensions and residual stresses are measured. The fusion-boundary profile is reproduced accurately by using a conical volume heat source model. The predicted residual stresses are in reasonable agreement with the results determined by the hole-drilling method. Through the analysis of predicted residual stresses, it is found that the normal residual stress in the interior of plate can not be negligible and the maximum value of three dimensional residual tensile stresses arises at 10.15 mm depth in the weld zone.
胸主动脉夹层动脉瘤破裂猝死1例

1 案例资料曹某,男,56岁,农民工,高血压病史2年.2007年1月28日,在工作时墙体突然倒塌,其左侧胸部受到砸压,当时因无明显不适,未去医院就诊.2月4日,猝死于家中.
蓄粪池内儿童他溺致死1例

1 案例资料某年2月26日,掏粪工在一盖着盖子的蓄粪池内发现一具高度腐败男性儿童尸体(经侦破确认为9岁).尸体检验衣着完整,穿戴自然,未见暴力性损伤,眼结膜因腐败难以判断是否有出血点.
头面部轻度挫伤致脑干损伤死亡1例

法医检案鉴定工作中肉眼能见到脑干损伤出血或血肿等明显改变,将其作为死因诊断一般不会引发争议.但若头面部损伤轻微,仅镜下见脑干有出血损伤,是否可致死则值得注意.现报道1例,供大家参考.
河南汉族群体4个X-STR基因座遗传多态性

本文报道河南汉族群体DXS6804、DXS6799、DXS7130、DXS6789 4个X-STR基因座基因频率调查1 材料与方法1.1 样本来源及DNA提取在知情同意隋况下采集河南地区汉族135名无关男性和142名无关女性个体血样本,共计277份.用苯酚/氯仿方法提取基因组DNA.
鼻咽癌患者血清和鼻咽组织中8-羟基脱氧鸟苷含量的变化

目的: 8-羟基脱氧鸟苷(8-OHdG)是DNA损伤性生物标志物.通过检测鼻咽癌患者血清和鼻咽组织中8-OHdG的水平,初步探究鼻咽癌的发生和发展是否与DNA损伤有关.方法: 利用抗8-OHdG单克隆抗体,通过ELISA和免疫荧光组织化学方法分别检测鼻咽癌患者血清和鼻咽组织中8-OHdG的水平.结果:8-OHdG在鼻咽癌患者血清和组织中表达水平较高,与正常人血清和慢性咽炎组织比较差异显著(P<0.05).结论: 结果提示鼻咽癌的发生和发展可能与8-OHdG的水平有关.8-OHdG有望成为辅助鼻咽癌诊断的一个生物标志物.
隔震支座动态特性的测试与识别

图1所示为φ600mm、高300mm,重约500kg的抗震减灾用隔震支座.在生产安装线上检测它的振动特性参数,可以在减振器顶层厚钢板上装上加速度传感器拾取信号y(t),另一端用带橡皮头的冲击锤进行激励,将信号输到CoCo-80/90,对响应信号y(t)进行各域分析.
水分散型聚氨酯在功能性整理中的应用(二)

1.3.2 薄膜性能水分散型聚氨酯形成的薄膜由柔性链段(软段)和刚性链段(硬段)组成的嵌段共聚物组成.其中,软段系低聚物多元醇,有聚醚型多元醇和聚酯型多元醇之分;而硬段为由二异氰酸酯和扩链剂(低聚物二元醇或二元胺)反应生成的氨基甲酸酯基(-O-C=O-NH-)和脲基(-NH-C=O-NH-)等结构.
水分散型聚氨酯在功能性整理中的应用(三)

2.5 含氟整理中的交联作用含氟拒水拒油整理织物在使用过程中,经洗涤、晒干后,其拒水拒油性能会明显下降,需经一定温度热处理才能恢复其防护功能.笔者曾将此温度称为"恢复温度".不同的含氟拒水拒油整理剂,根据笔者试验,其"恢复温度"不同,如表13所示[24].
Vertical handoff algorithm in heterogeneous networks to maximize system benefit

A new vertical handoff decision algorithm is proposed to maximize the system benefit in heterogeneous wireless networks which comprise cellular networks and wireless local area networks (WLANs).Firstly the block probability,the drop probability and the number of users in the heterogeneous networks are calculated in the channel-guard call admission method,and a function of the system benefit which is based on the new call arrival rate and the handoff call arrival rate is proposed.Then the optimal radius of WLAN is obtained by using simulation annealing (SA) method to maximize the benefit.All the nodes should handoff from cellular network to WLAN if they enter WLAN's scope and handoff from WLAN to cellular network if they leave the scope.Finally,the algorithm in different new call arrival rates and handoff call arrival rates is analyzed and results show that it can achieve good effects.
Adaptive compensating method for Doppler frequency shift using LMS and phase estimation

The novel compensating method directly demodulates the signals without the carrier recovery proeesses,in which the carrier with original modulation frequency is used as the local coherent carrier.In this way,the phase offsets due to frequency shift are linear.Based on this premise,the compensation processes are:firstly,the phase offsets between the baseband neighbor-symbols after clock recovery is unbiasedly estimated among the reference symbols;then,the receiving signals symbols are adjusted by the phase estimation value;finally,the phase offsets after adjusting axe compensated by the least mean squares (LMS) algorithm.In order to express the compensation processes and ability clearly,the quadrature phase shift keying (QPSK) modulation signals are regarded as examples for Matlab simulation.BER simulations are carried out using the Monte-Carlo method.The learning curves are obtained to study the algorithm's convergence ability.The constellation figures are also simulated to observe the compensation results directly.
大肠癌手术中意外出血的临床分析

术中意外出血是任何一个外科医生不能回避及轻视的问题.它不仅影响外科医生的手术操作,还使患者面临死亡的危险.本研究同顾分析2001年至2007年我科10例大肠癌患者手术中发生意外出血的治疗过程,现报道如下.
Dual function of Arabidopsis A TAF1 in abiotic and biotic stress responses

NAC family genes encode plant-specific transcription factors involved in diverse biological processes.In this study,the Arabidopsis NAC gene ATAFI was found to be induced by drought,high-salinity,abscisic acid(ABA),methyl jasmonate,mechanical wounding,and Botrytis cinerea infection.Signifcant induction of ATAFI was found in an ABA-deficient mutant aba2 subjected to drought or high salinity,revealing an ABA-independent mechanism of expression.Arabidopsis ATAF1-overexpression lines displayed many altered phenotypes,including dwarfism and short primary roots.Furthermore,in vivo experiments indicate that ATAF1 is a bona fide regulator modulating plant responses to many abiotic stresses and necrotrophic-pathogen infection.Overexpression of ATAF1 in Arabidopsis increased plant sensitivity to ABA,salt,and oxidative stresses.Especially,ATAF1 overexpression plants,but not mutant lines,showed remarkably enhanced plant tolerance to drought.Additionally,ATAF1 overexpression enhanced plant susceptibility to the necrotrophic pathogen B.cinerea,but did not alter disease symptoms caused by avirulent or virulent strains of P.syringae pv tomato DC3000.Transgenic plants overexpressing ATAF1 were hypersensitive to oxidative stress,suggesting that reactive oxygen intermediates may be related to ATAF1-mediated signaling in response to both pathogen and abiotic stresses.
A cyclic behavior of CME accelerations for accelerating and decelerating events

We investigate the cyclic evolutionary behavior of CME accelerations for accelerating and decelerating CME events in cycle 23 from 1997 January to 2007 December.It is found that the absolute values of semiannual mean accelerations of both accelerating and decelerating CME events roughly wax and wane in a cycle,delaying the sunspot cycle in time phase.We also investigate the semiannual number of CMEs with positive and negative acceleration and find that there are more decelerating CME events than accelerating CME events during the maximum period of a cycle (about three years),but there are more accelerating CME events than decelerating CME events during the rest of the time interval of the cycle.Our results seem to suggest that the different driving mechanisms may be acting accelerate and decelerate CME events: for accelerating CME events,the propelling force (Fp) statistically seems to play a significant role in pushing CMEs outward;for decelerating CME events,the drag (F_d) statistically seems to play a more effective role in determining CME kinematic evolution in the outer corona.During the maximum period of a cycle,because of the V_2 dependence,Fd is generally stronger; because of the magnetic field dependence,Fp is also generally stronger.Thus,the absolute values of both the negative and positive accelerations are generally larger during that time.Because of the V2 dependence,Fd may be more effective during the maximum period of a cycle.Hence,there are more decelerating CME events than accelerating CME events during that time.During the minimum time interval of a cycle,CMEs have relatively small speeds,and Fp may be more effective.Therefore,there are more accelerating CME events than decelerating CME events during that time.
冀西北栗钙土有机碳、酶活性及土壤呼吸强度特征研究

土壤有机碳(质)水平的高低是评价土壤肥力高低的重要指标之一,如何提高土壤有机碳(质)研究一直是国内外土壤科学工作者关注的课题.近年来,随着全球环境变化对陆地生态系统的影响,土壤有机碳逐渐成为公众和科学界关注的热点[1].
水平交换电场与EDDS螯合诱导植物联合修复Cu/Zn污染土壤

电动修复技术是20世纪80年代兴起的一种污染土壤修复技术.该技术在污染土壤两端施加直流电场,在电场作用下土壤中的重金属和有机污染物通过电迁移、电渗流和电泳等方式迁移出土体,从而实现污染土壤的清洁~([1,2]).
Promoting effect of polyoxyethylene octylphenol ether on Cu/ZnO catalysts for low-temperature methanol synthesis

Cu/ZnO catalysts were prepared by the co-precipitation method with the addition of OP-10 (polyoxyethylene octyiphenol ether) and were chemically and structurally characterized by means of XRD,BET,H_2-TPR,CO-TPD and N_2O-titration. The effect of OP-10 addition on the activity of Cu/ZnO for the slurry phase methanol synthesis at 150 ℃ was evaluated. The results showed that Cu/ZnO prepared with addition of 8% OP-10 (denoted as C8) exhibited the promoted activity for the methanol synthesis. The conversion of CO and the STY (space time yield) of methanol were 42.5% and 74.6% higher than those of Cu/ZnO prepared without addition of OP-10 (denoted as CO),respectively. The precursor of C8 contained more aurichalcite and rosasite,and the concerted effect of Cu-Zn in C8 was found to be stronger than that in CO. Compared with CO,C8 showed smaller particle size,lower reduction temperature and larger BET and Cu surface areas.
Nanosized cobalt-based catalyst prepared by supercritical phase condition for Fischer-Tropsch synthesis

A series of nanosized Co/Zn/Mn/K composite catalysts for Fischer-Tropsch synthesis (FTS) were prepared by supercritical fluid drying (SCFD) method and common drying (CD) method. The nanosized cobalt-based catalysts were characterized by XRD,TEM and BET techniques. Their catalytic performances were tested in a slurry-bed reactor under FTS reaction conditions. The drying and crystallization were carded out simultaneously during SCFD,therefore,the catalysts prepared by SCFD method have ideal structure and show the FTS performance superior to the others prepared by CD method. The FTS activity and selectivity were improved via adding Zn,Mn and K promoters,and less CH_4 and CO_2 as well as higher yield of C~(5+) products were achieved. The optimal performance of a 92% CO conversion and a 65% C~(5+) product yield was obtained over a catalyst with the component of Co/Zn/Mn/K = 100/50/10/7. Furthermore,the catalytic performance was studied under the conditions of liquid-phase and supercriticai phase slurry-bed,and C~(5+) product yield were 57.4% and 65.4%,respectively. In summary,better catalytic performance was obtained using the nanosized catalyst prepared by SCFD method under supercritical reaction conditions,resulting in higher conversion of CO,less CO_2 byproduct,and higher yield of C~(5+) products,
Conversion of syngas to higher alcohols over Cu-Fe-Zr catalysts induced by ethanol

Ethanol induced method was applied to prepare Cu-Fe-Zr catalysts for conversion of syngas to higher alcohols. The catalytic performance of the catalysts induced by ethanol was superior to that of the catalyst prepared by the conventional precipitation method. Among various procedures for ethanol induced method,it was found that incorporation of ethanol in the precipitation process was the better. After incorporation of ethanol,the crystal size of CuO decreased and the reduction of copper species became easier. The better activity of Cu-Fe-Zr catalysts prepared by ethanol induced procedures was probably caused by the higher dispersion of Cu species.
Energy-Efficient coaromatization of methane and propane

Development of highly effective catalysts for one-stage conversion of methane with high selectivity to valuable products and energy efficiency will provide an efficient way to utilize natural gas and oil-associated gases and to protect environment. In recent years,there have been many efforts on direct catalytic transformations of methane into higher hydrocarbons by feeding additives together with methane under non-oxidative conditions. This paper reviewed the ad-vances in recent research on non-oxidative aromatization of methane in the presence of propane over different modified HZSM-5 cata-lysts. The thermodynamic consideration,the isotope verification and the mechanism of the activation of methane in the presence of propane are discussed in the paper in detail.
Synthesis of dimethyl ether from methane mediated by HBr

Dimethyl ether (DME) was synthesized from methane through a two-step process,in which CH_3 Br was prepared from the oxidative bromination reaction of methane in the presence of HBr and oxygen over a Rh-SiO_2 catalyst and then,in the second step,CH_3Br was hydrolyzed to DME over a silica supported metal chloride catalyst. 12 mol%ZnCl_2/SiO_2 catalyst was found to be the most active,but it deactivated because of Cl- losing.
晚期早产胎膜早破166例分析

未足月妊娠胎膜早破(late preterm premature rupture of the membrane,PPROM)指妊娠未满37周胎膜在临产前发生自发性破裂.在所有妊娠中PPROM发生率为2.0%～3.5%,是早产的最常见原因,占早产的30%～40%.晚期早产指妊娠34至36+6周之间发生分娩.
帕瑞昔布钠超前镇痛在骨科手术的应用

帕瑞昔布钠为能采用注射形式给药的选择性环氧化酶-2(COX-2)抑制剂,本研究观察帕瑞昔布钠对骨科手术术后镇痛的影响.
金芪降糖片治疗新诊断老年2型糖尿病患者80例

近年老年糖尿病(DM)的发病率明显升高,且多数为2型DM.老年DM患者脏器功能的减退,给治疗带来一定的困难.寻求安全、有效、不良反应小,延缓并发症发生的降糖药物成为人们关注的焦点.
叉头框P2(FoxP2)基因与鸟鸣

叉头框P2(FoxP2)基因是与人类语言相关的基因,在鸣禽脑中也存在,不仅参与胚胎时期的关键性发育,对鸣禽鸣曲学习也有影响.实验表明,FoxP2基因对神经回路发育和出生后的鸣唱学习,以及成鸟的鸣曲稳定都有重要作用.FoxP2基因主要在与人类同源的基底神经节--X区表达.本文介绍了FoxP2基因与鸟鸣的新近研究进展.
女性后尿道转移瘤MRI表现一例

患者 女,74岁,因"排尿困难3个月"入院.患者10个月前曾冈下颌腺癌行125I粒子植入术.近来逐渐出现排尿困难伴尿频、尿痛,无血尿、发热.入院前1个月B超示:膀胱梗阻性改变,残尿量320 ml,后尿道周围可见4.0 cm×4.4 cm×4.2 cm低回声结构,性质待查.尿动力学检查示:膀胱梗阻性改变,排尿期可见逼尿肌收缩.
布-加综合征:副肝静脉解剖和介入治疗研究进展

肝静脉血液回流除了三大主肝静脉外,尚有数支直接汇入下腔静脉(inferior vena cava,IVC)的细小肝静脉,统称为副肝静脉(accessory hepatic vein,AHV)或肝短静脉,其数目较多,形态和分布变异较大,影像学检查具有较高的临床价值.正常人群中AHV多数细小,且不是肝脏的主要回流静脉,以往未引起足够的重视,随着医学影像学、肝胆外科的迅速发展及布-加综合征(Budd-Chiari syndrome,BCS)介入治疗的深入开展,在3支主肝静脉阻塞时AHV起到的代偿作用以及如何利用与保护AHV的功能逐步受到关注.
Sorbalgon藻酸钙敷料和碘仿纱条在乳突根治术后术腔填塞中的应用比较

乳突根治术后术腔填塞物的选择,对于创面的止血和愈合有较大意义.Sorbalgon藻酸钙敷料在鼻内镜术后鼻腔填塞中的应用较为广泛,在减少鼻腔出血,减轻术后疼痛,促进鼻腔创面愈合等方面取得较好的效果[1-2].
茂名市杂交水稻种子市场现状及对策

分析了茂名市杂交水稻种子市场的品种审批推广及经营方式的现状及存在问题,从加强政策宣传、执法建设、监督管理、打击违法经营等方面对杂交稻种子市场管理提出了相应对策建议.
荔枝蒂蛀虫不同年份危害率调查分析

初步调查了2007年和2008年蒂蛀虫对荔枝果实的危害率,发现蒂蛀虫在多雨潮湿的2008年上半年,总体危害较轻.平均危害率为21.9%,而在相对少雨干燥的2007年上半年,危害相对较重,平均危害率为42.5%.说明潮湿多雨的环境不利于荔枝蒂蛀虫生存繁殖,即蒂蛀虫具有"厌湿性"文章讨论了利用昆虫的"厌湿性",通过淋水、薄膜覆盖或生草覆盖等的加湿保湿的措施,减少荔枝蒂蛀虫危害.
2008年广东省优稀水果产业发展现状分析

广东是热带、亚热带花果之乡,水果资源十分丰富.作为全国水果的重要生产基地和对外交流中心,在近几年,受"一乡一品"的农业发展格局拉动,广东各级县市发展种植特色经济作物,优稀水果产业由于特色明显,产业效益高,产业发展迅速,区域化生产颇具规模.以广东在全国范围内具有特色、优稀水果的种植优势品种枇杷、特色柚、橄榄、芒果、番木瓜等作为主要分析对象,针对广东优稀水果产业区域特色分布及产、加、销等产业环节进行现状分析,并就广东优稀水果产业的未来发展提出对策建议.
2008年广东省柑桔产业发展现状分析

广东省是全国主要柑桔种植生产省份,也是我国柑桔最早种植、面积最多和产量最高的省份之一.以国内外柑桔产业发展现状为背景,对2008年广东省柑桔的种苗繁育、生产、销售、加工、进出口以及产业科技等方面进行了分析,总结了广东省柑桔产业已取得的成绩,提出了目前广东省柑桔产业普遍存在的问题以及相应的对策建议,为广东省柑桔产业的健康发展提供有益的参考.
锐劲特、乙虫腈、乐斯本对水稻主要害虫的防治效果

锐劲特等防治水稻主要害虫的田间药效试验结果表明:每667 m~2喷施5%锐劲特悬乳剂40 mL、48%乐斯本乳油80 mL对水稻螟虫、稻纵卷叶螟有很好的防治效果,对水稻螟虫防治效果分别达到91.75%和87.34%,对稻纵卷叶螟防治效果达到90.61%和90.34%,是防治水稻螟虫、稻纵卷叶螟的优良药剂;每667 m~2喷施10%乙虫腈(酷毕)悬浮剂40 mL对稻飞虱有很好的防治效果.药后7 d防治效果达85.99%,是防治稻飞虱的优良药剂,建议进一步在水稻主要害虫的防治上推广应用.
外来人侵生物福寿螺的生物学特性、危害与防治现状

福寿螺入侵是目前农作物生产及水产业所共同关注的问题.概述了福寿螺的生物学特征.对其入侵分布情况、危害及防治措施做了详细介绍,展望了福寿螺系统研究的趋势.
盐酸克伦特罗检测方法研究进展

综述了盐酸克伦特罗的化学性质、危害、检测方法以及检测技术发展趋势.综合考虑各方法的优缺点,指出现在最常用的两种检测方法是气相色谱-质谱法(GC-MS)和酶联免疫分析技术(EIA);生物传感器技术和生物芯片是盐酸克伦特罗检测技术的发展趋势.
微晶硅薄膜研究前景广阔

面对资源有限、能源紧缺的现实,开发新能源和可再生能源成为迫切任务.太阳能是清洁环保的可再生能源,利用半导体器件的光佚效应原理进行光电转换,发晨光伏能源被王于可再生能源发展的首位.从太阳能电池发展史看,法国物理学家贝克勒尔1839年在化学电池中观察到光伏效应,美国贝尔实验室Chapin等1954年研制出效率为6%的实用型单晶硅电池,以色列Tabor1955年提出选择性吸收表面理论并研制成功选择性太阳吸收涂层,这些突破为太阳能利用进入现代发展时期奠定了技术基础.
食管ZenKer憩室内镜下切除配合和护理

1 病例介绍谢某,女,58岁,因3年前无确切诱因出现进食后呕吐,伴反酸等症状,于当地医院行喉镜、胃镜、钡餐等检查确诊为食管Zerdker憩室.当时患者自觉症状较轻,未行进一步治疗.近半年来自觉上述加重,后到我院行上消化道钡餐检查诊断食管Zenker憩室.由于患者既往有慢性支气管炎、肺气肿及双肺肺大疱等基础病变.
新中国包装事业发展60年回顾

编者按:值此新中国成立60周年之际,本刊前副主编韩锦平先生等一批见证我国包装工业和包装科技发展历程的人士,精心撰文回顾了我国包装行业的成长之路,历数了新中国包装事业所取得的辉煌成就,并为我国包装业的发展提出了诸多建议.本刊为此特别策划了<新中国包装60年专题>,将分期分批刊登部分文章,以飨读者.
纵观六十载,畅谈机床情——访机床行业著名专家恩宝贵先生

向恩总约采访的时候,真的不敢相信电话那端底气十足、热情洋溢的声音出自一位七甸老人,当笔者确确实实迈进恩总家门的时候,几年来见的恩总依然是那样笑容和蔼,思路清晰,那些记忆如同刻画在他的心中,点点滴滴,信手拈来,不得不让人钦佩.
中国生物化学与分子生物学的发展

1.起源和1949年以前的发展最初,生物化学或生理化学是医学院校的一门基础课程.上世纪初,医学院开始在全中国蓬勃发展.其中最著名的一所,由洛克菲勒基金捐助的北京协和医学院(PUMC)始建于1917年.该校在1919年成立了生理化学系.1924年,吴宪担任生理化学系主任,并于1925年将生理化学系改名为生物化学系.
我国近海风电发展的若干问题探讨

1 欧盟国家近海风电发展简况与主要经验进入20世纪90年代以来,为了应对全球气候变暖和减少对化石能源的依赖,世界上许多国家,特别是欧盟国家加大了风电的开发力度,目前大约已有1亿kW的风电在运行.
重视抗病毒治疗中耐药的监测与处理

病毒与其他微生物一样普遍存在变异,这是病毒适应环境生存的重要方式.本专题刊登人巨细胞病毒(HCMV)对更昔洛韦(GCV)耐药基因型的检测、表型分析,乙型肝炎病毒(HBV)阿德福韦(ADV)耐药基因型的检测,HBV前C区1896、基本C区启动子区1762/1764变异对拉米夫定(LAM)疗效的影响,HCMV以及人类免疫缺陷病毒(HIV)耐药性的研究进展等论文与信息共6篇.这些内容是国内外十分关注的热点,以期共同提高对抗病毒耐药的理解,重视抗病毒治疗中耐药的监测与处理.
超声内镜引导腹腔神经丛毁损治疗胰腺癌疼痛

胰腺癌患者的数量正不断增多,其预后差,5年生存率低于30%.因此,改善其生活质量是临床首先要考虑的问题,其中癌性疼痛仍是棘手的问题.70%～80%的胰腺癌患者在首次确诊时即伴有疼痛,随着疾病的进展,疼痛发生率可上升至90%[1-2].
以受体为靶点的药物筛选模型的建立及应用

在创制新药的研究中寻找和发现具有生物活性的先导化合物是至关重要的环节之一,而对大量化合物进行活性筛选则是发现先导化合物的主要手段和途径.近年来,我们应用以受体为靶点的药物筛选模型筛选新药技术取得了一定的成果.
葡萄砧木5BB超声波辅助农杆菌介导法遗传转化的条件

在遗传转化中,超声波处理可以在外植体上产生许多易于农杆菌进入的微小伤口和通道,从而增加农杆菌与外植体之间的接触,提高农杆菌对外植体的转化频率[1].
microbiological parameters and maturity degree during composting of Posidonia oceanica residues, mixed with vegetable wastes in semi-arid pedo-climatic condition

The aim of this study was to characterize the biological stability and maturity degree of compost during a controlled pile-composting trial of mixed vegetable residues (VR) collected from markets of Tunis City with residues of Posidonia oceanica (PoR), collected from Tunis beaches. The accumulation in beaches (as well as their removal) constitutes a serious environmental problem in all Mediterranean countries particularly in Tunisia. Aerobic-thermophilic composting is the most reasonable way to profit highly-valuable content of organic matter in these wastes for agricultural purposes. The physical, chemical, and biological parameters were monitored during composting over 150 d. The most appropriate parameters were selected to establish the maturity degree. The main result of this research was the deduction of the following maturity criterion: (a) a C/N ratio < 15; (b) an NH_4~+-N value < 400 mg/kg; (c) CO_2-C < 2000 mg CO_2-C/kg; (d) dehydrogenase activity < 1 mg TPF/g dry matter (dm); (e) Germination index (GI) > 80%. These five parameters, considered jointly are indicative of a high maturity degree and thus of a high-quality organic amendment which employed in a rational way, may improve soil fertility and soil quality. The mature compost was relatively rich in N (13.0 g/kg), P (9.48 g/kg) and MgO (15.80 g/kg). Thus composting definitively constitutes the most optimal option to exploit these wastes.