mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Finite-Time Normal Mode Disturbances and Error Growth During Southern Hemisphere Blocking 

The structural organization of initially random errors evolving in a barotropic tangent linear model, with time-dependent basic states taken from analyses, is examined for cases of block development, maturation and decay in the Southern Hemisphere atmosphere during April, November, and December 1989. The statistics of 100 evolved errors are studied for six-day periods and compared with the growth and structures of fast growing normal modes and finite-time normal modes (FTNMs). The amplification factors of most initially random errors are slightly less than those of the fastest growing FTNM for the same time interval.During their evolution, the standard deviations of the error fields become concentrated in the regions of rapid dynamical development, particularly associated with developing and decaying blocks. We have calculated probability distributions and the mean and standard deviations of pattern correlations between each of the 100 evolved error fields and the five fastest growing FTNMs for the same time interval. The mean of the largest pattern correlation, taken over the five fastest growing FTNMs, increases with increasing time interval to a value close to 0.6 or larger after six days. FTNM 1 generally, but not always, gives the largest mean pattern correlation with error fields. Corresponding pattern correlations with the fast growing normal modes of the instantaneous basic state flow are significant but lower than with FTNMs.Mean pattern correlations with fast growing FTNMs increase further when the time interval is increased beyond six days.
Possible Impacts of the Arctic Oscillation on the Interdecadal Variation of Summer Monsoon Rainfall in East Asia 

The influences of the wintertime AO (Arctic Oscillation) on the interdecadal variation of summer monsoon rainfall in East Asia were examined. An interdecadal abrupt change was found by the end of the 1970s in the variation of the AO index and the leading principal component time series of the summer rainfall in East Asia. The rainfall anomaly changed from below normal to above normal in central China, the southern part of northeastern China and the Korean peninsula around 1978. However,the opposite interdecadal variation was found in the rainfall anomaly in North China and South China.The interdecadal variation of summer rainfall is associated with the weakening of the East Asia summer monsoon circulation. It is indicated that the interdecadal variation of the AO exerts an influence on the weakening of the monsoon circulation. The recent trend in the AO toward its high-index polarity during the past two decades plays important roles in the land-sea contrast anomalies and wintertime precipitation anomaly. The mid- and high-latitude regions of the Asian continent are warming, while the low-latitude regions are cooling in winter and spring along with the AO entering its high-index polarity after the late 1970s. In the meantime, the precipitation over the Tibetan Plateau and South China is excessive, implying an increase of soil moisture. The cooling tendency of the land in the southern part of Asia will persist until summer because of the memory of soil moisture. So the warming of the Asian continent is relatively slow in summer. Moreover, the Indian Ocean and Pacific Ocean, which are located southward and eastward of the Asian land, are warming from winter to summer. This suggests that the contrast between the land and sea is decreased in summer. The interdecadal decrease of the land-sea heat contrast finally leads to the weakening of the East Asia summer monsoon circulation.
Weakening of Indian Summer Monsoon in Recent Decades 

The analysis of 43 years of NCEP-NCAR reanalysis data and station observations reveals the connections between tropospheric temperature variations and the weakening of the Indian summer monsoon circulation. The Indian summer monsoon variation is strongly linked to tropospheric temperature over East Asia, showing significant positive correlations of mean tropospheric temperature with all-Indian summer rainfall and the monsoon circulation intensity. The result shows that Indian summer monsoon circulation underwent two weakening processes in recent decades. The first occurred in circa the mid-1960s, and the other occurred in circa the late 1970s. The finding indicates that the mean tropospheric temperature may play a crucial role in the weakening of the Indian summer monsoon intensity via changing land-sea thermal contrast. The role of the tropospheric temperature contrast between East Asia and the tropical area from the eastern Indian Ocean to the tropical western Pacific is to weaken the Indian summer monsoon circulation.
Seasonal Variability of the Yellow Sea/East China Sea Surface Fluxes and Thermohaline Structure 

We use the U.S. Navy's Master Oceanographic Observation Data Set (MOODS) for the Yellow Sea/East China Sea (YES) to investigate the climatological water mass features and the seasonal and non-seasonal variabilities of the thermohaline structure, and use the Comprehensive Ocean-Atmosphere Data Set (COADS) from 1945 to 1989 to investigate the linkage between the fluxes (momentum, heat, and moisture) across the air-ocean interface and the formation of the water mass features. After examining the major current systems and considering the local bathymetry and water mass properties, we divide YES into five regions: East China Sea (ECS) shelf, Yellow Sea (YS) Basin, Cheju bifurcation (CB) zone, Taiwan Warm Current (TWC) region, Kuroshio Current (KG) region. The long term mean surface heat balance corresponds to a heat loss of 30 W m-2 in the ESC and CB regions, a heat loss of 65 W m-2 in the KG and TWC regions, and a heat gain of 15 W m-2 in the YS region. The surface freshwater balance is defined by precipitation minus evaporation. The annual water loss from the surface for the five subareas ranges from 1.8 to 4 cm month-1. The fresh water loss from the surface should be compensated for from the river run-off. The entire water column of the shelf region (ECS, YS, and CB) undergoes an evident seasonal thermal cycle with maximum values of temperature during summer and maximum mixed layer depths during winter. However, only the surface waters of the TWC and KG regions exhibit a seasonal thermal cycle.We also found two different relations between surface salinity and the Yangtze River run-off, namely, out-of-phase in the East China Sea shelf and in-phase in the Yellow Sea. This may confirm an earlier study that the summer fresh water discharge from the Yangtze River forms a relatively shallow, low salinity plume-like structure extending offshore on average towards the northeast.
Temperature Effect on the Formation of Amorphous Carbon Nanotubes by An Arc Discharge

Large amounts of amorphous carbon noatubes (ACNTs) were prepared by a modified arc-discharging furnace, which can control temperature from room temperature to 900℃ during the electric arcing process. There are sixφ10×100mm2 graphite rode anode with aφ6×80mm2 hole drilled in them which was filled with a mixture powders of Co-Ni(1:1wt%) alloy.……
Hydrodynamics and Mass Transfer of Jet Co-flow Packing Tray

The jet co-flow packing tray(JCPT) with three different types of perforation in equal opening fraction was tested in two rectangular columns with 0.12 m in width and 0.27m in length operated with air-water system.The influences of gas phase orifice F-factor and clear liquid height Hc on the amount of liquid lifted, Q, were examined. The corresponding correlation between Q with F-factor and equivalent diameter of perforated holes as well as Hc was obtained. Furthermore, the non-steady state mass transfer performance of JCPT was tested by the humidification of air with water. Finally, by the analysis of data and comparison, it was found that the JCPT tray with single cap and two holes exhibited the highest mass transfer efficiency and best performance.
Simulation and optimization of pyramidal AlGaAs probe with ultra-small spot size and high throughput

In this paper, the light-emitting spot sizes and throughputs of the four types of probes are studied using the finite-difference time-domain method and these probes are also compared in performance. Among these probes, a pyramidal AlGaAs tip coated entirely with a thin Ag film can provide the highest throughput and a single near-field spot size. Probe coated with a 3nm Ag film and incident light with a wavelength of 800nm seems to offer the optimum condition for high throughput and ultra-small spot size, which enables the realization of ultra-high density storage.
An improved resonant parametric perturbation for chaos control with applications to control of DC/DC converters

This paper presents an improved resonant parametric perturbation method based on the modulation of a nonlinear map for controlling chaos. The control target can be any periodic orbit, which is not necessarily what is embedded in the chaotic attractor. Application of the method is illustrated for a common current-programmed DC/DC converter which has been known to easily become chaotic for a wide parameter range. The control effects of chaos are demonstrated with computer simulations.
硒对花椰菜幼苗叶绿素、脯氨酸及丙二醛含量的影响

应用土培盆栽方式,研究了不同土壤硒浓度对花椰菜幼苗期叶绿素、脯氨酸和丙二醛含量的影响.结果表明:在补硒浓度0～24 mg·kg-1范围内,叶绿素含量随着土壤硒浓度的升高而增加;在补硒浓度0～32 mg·kg-1内,脯氨酸含量随土壤硒含量的升高而增加;在补硒浓度为16～32 mg·kg-1时,可明显降低丙二醛的含量,大于32 mg·kg-1后,其含量显著升高.
生物农药白僵菌原药急性毒性实验

白僵菌(beauvtria bassiana)是当今世界上防治害虫应用较广的一种虫生真菌,对多种农林害虫具有致死作用[1].为了解白僵菌原药的毒性情况对其进行了急性毒性和致敏试验.
湖北省魔芋产业现状及发展对策

魔芋是唯一高含葡甘聚糖的植物资源,具有巨大的开发价值.论述了国内外、特别是湖北省魔芋种植业的发展历程、魔芋加工企业及科研方面的现状,指出湖北省下一步做大做强魔芋产业迫切需要解决的问题.
湖北省主要优势农产品及其产业带规划

从优势农产品、优势农产品产业带的概念、标准和要求出发,在调查相关数据的基础上,选用区位商分析法,分析了湖北省主要优势农产品粮食、油菜和蔬菜产业带的规划,探讨了湖北省优势农产品及其产业带建设中存在的一些问题和展望.
心内直视手术中心外膜冰泥的制作

心内直视手术中,需在心包腔内和心脏表面放置冰屑降温以保护心肌.以往冰屑多用无菌冰块破碎后制成,所制冰屑大小不一,且有很多尖锐的棱角,易划伤心外膜;同时,破碎冰块的过程复杂、费力,容易增加污染机会.我科经过反复试验,总结出一种简单方便的冰泥制作方法,临床应用效果良好,介绍如下.
东太平洋热带海域大青鲨长度组成、肝重指数特征分析

大青鲨(Prionace glauca)是一种大型中上层鲨鱼,隶属于真鲨目、真鲨科、大青鲨属.最大全长(TL)可达到400 cm,最大体重为205.9 kg,最大年龄为20龄,分布于66 °N～ 55 °S三大洋海域[1,2].在我国南海和东海也有记录[3].该鲨鱼是金枪鱼渔业最重要的兼捕鱼种.一般在捕获后割取鳍条,鱼体丢弃海中.1997年全球产量仅为520 t,2000年达到8 186 t,2001年增加到10 087 t.主要生产国是巴西、西班牙、葡萄牙和新西兰。
利用转染胸苷激酶基因的T淋巴细胞移植建立H-2半相合急性移植物抗宿主病模型

目前对移植物抗宿主病(GVHD)及其发病机理的认识大多来自于小鼠移植模型,为研究急性GVHD(aGVHD)的治疗,首先必须建立重复性好和公认的小鼠GVHD模型.C57BL/6小鼠(H-2b)和Blab/c小鼠(H-2a)是研究小鼠骨髓移植最常用的两种近交品系,具有来源广、价格较低、遗传背景明确、结果稳定及重复性好等特点.本研究采用C57BL/6小鼠及其子代作为半相合移植的供、受鼠,将CD34+细胞和不同数量的转染胸苷激酶基因的T淋巴细胞(TK+T淋巴细胞)移植给受鼠,观察aGVHD发生情况,研究建立H-2半相合移植aGVHD模型所必须的TK+T淋巴细胞数量.……
3-磷酸甘油醛脱氢酶、β-肌动蛋白和18S rRNA作为相对定量的内标在牙鲆发育阶段的稳定性比较

定量确定基因表达水平的方法主要有实时定量PCR和相对定量检测.一般只有在需要确定基因的拷贝数时,才利用实时定量PCR检测.目前大部分的研究中还是选择相对定量的检测.相对定量检测有Northern blot和相对定量PCR两种检测方法,均需要采用内标来确定目标基因的相对表达量.大多数的内标采用管家基因如3-磷酸甘油醛脱氢酶(glyceraldehyde-3-phosphate dehydrogenase,GAPDH) 、β-肌动蛋白基因等[1,2].近年来,越来越多的研究者发现GAPDH,肌动蛋白基因的表达水平并不稳定,利用它们作为内标来定量并不准确[3-5].我们在前期的研究中,利用抑制差减技术也克隆到牙鲆GAPDH和β-肌动蛋白基因,表明这两个基因在牙鲆发育过程有可能表达水平上有差异.为了确定GAPDH和β-肌动蛋白基因表达的稳定性,本研究将这两种基因的表达量分别与另一种常被用作内标的18S rRNA的表达量作比较.
鱼类胰岛素样生长因子研究进展

胰岛素样生长因子(insulin-like growth factors, IGFs)主要包括IGF-I和IGF-II两种类型,其结构与胰岛素原(proinsulin)相似,因此与胰岛素(insulin, INS)、松弛肽(relaxin)一起被称为INS/IGF/relaxin家族蛋白[1].与哺乳动物相似,对鲑鳟鱼类的研究发现IGF-I mRNA在肝脏中含量最高,表明肝脏是IGFs主要的分泌表达场所.目前已发现有4种亚型的IGF-I mRNA,由于它们都与哺乳动物的IGF-Ia相似,因此依据E区域的大小分别命名为Ea-1,Ea-2,Ea-3和Ea-4[2].鱼类大部分肝外组织都有IGFs的表达,以旁分泌和自分泌的模式发挥作用.IGF-I是是细胞分裂,分化,胚胎发育和生长调控的重要调节因子,是生长激素功能的主要介导因子,能促进细胞的分裂和分化,促进蛋白质的合成,抑制蛋白质的降解,调节河海洄游性鱼类的渗透压,也是潜在的细胞凋亡阻抑因子[3,4].IGF-II也被称为生长调节素A(somatomedin A),由67个氨基酸残基组成,在哺乳动物中,其作用不依赖于生长激素,主要参与胚胎期的生长发育的调节;而在鱼类,可能生长激素对不同鱼的IGF-II基因表达的作用模式不同.
Landscape pattern and fragmentation of natural secondary forests in the eastern mountainous region, northeast China: A case study of Mao'ershan forests in Heilongjiang Province

Mao'ershan region is a representative natural secondary forested region in the eastern mountainous region, northeast of China.. Under the support of ARC/INFO and GIS technology, the landscape shape and fragment indices of Mao'ershan experimental plantation were studied by combining the forest type map (1:10000), which was drawn from the aerial photographs (1999), field investigation (1999) and soil utilized map (1:10000). The results showed that the shape index and shape fragment index of natural landscape were higher than those of artificial landscapes and landscape patch fragment index depended on the number of patches. The natural forest had complex shape, suffering little jamming, and its shape index was higher than that of artificial forest. The manual controlled landscape (e.g. nursery, cropland and cutting blank) had regular shape, and its shape index was smaller. The fragment index of patches in natural forest was higher than that of artificial forest. The soft broad-leaved had the highest fragment index of patch amount.
Landscape pattern change in the upper valley of Min River

The upper valley of Min River (102° 59′ -104° 14′ E, 31° 26′ - 33° 16′ N), which is consisted of the counties Wenchuan, Maoxian, Lixian, Heishui, and Songpan, refers to the part up to Dujiangyan City, and locates on the transition zone from the Tibetan Plateau to the Sichuan Basin. It is one of the most important forest areas in China, especially in Sichuan Province. Over past two decades, the landscape changed remarkably in the region. The 3S techniques (Remote Sensing (RS), Geographic Information System (GIS) and Global Position System (GPS)) were used to classify the images and analyze the landscape change. The remotely sensed data of Landsat TM 1986 and Landsat ETM+ 2000 were used to analyze the landscape change of the region. The landscape were classified into 10 types of cropland, forest, shrub land, economic forest, grassland, build up land, river, lake, swamp, and unused land. The results showed that: 1) the woodland and grassland were dominating landscape types in the upper valley of Min River, which is more than 91% of the study area; 2) the alteration of the landscape was mainly happened among forest, shrub land, grassland, economic forest, cropland, and build up land, where forest decreased from 51.17% to 47.56%; 3) the landscape fragmentation in the upper valley of Min River was aggravated from 1986 to 2000.
Comparative study on active soil organic matter in Chinese fir plantation and native broad-leaved forest in subtropical China

Active soil organic matter (ASOM) has a main effect on biochemical cycles of soil nutrient elements such as N, P and S, and the quality and quantity of ASOM reflect soil primary productivity. The changes of ASOM fractions and soil nutrients in the first rotation site and the second rotation site of Chinese fir plantation and the native broad-leaved forest were investigated and analyzed by soil sampling at the Huitong Experimental Station of Forestry Ecology (at latitude 26°48′N and longitude 109°30′E under a subtropical climate conditions), Chinese Academy of Sciences in March, 2004. The results showed that values of ASOM fractions for the Chinese fir plantations were lower than those for the broad-leaved forest. The contents of easily oxidisable carbon (EOC), microbial biomass carbon (MBC), water soluble carbohydrate (WSC) and water-soluble organic carbon (WSOC) for the first rotation of Chinese fir plantation were 35.9%, 13.7%, 87.8% and 50.9% higher than those for the second rotation of Chinese fir plantation, and were 15.8%, 47.3%, 38.1% and 30.2% separately lower than those for the broad-leaved forest. For the three investigated forest sites, the contents of MBC and WSOC had a larger decrease, followed by WSC, and the change of EOC was least. Moreover, soil physico-chemistry properties such as soil nutrients in Chinese fir plantation were lower than those in broad-leaved forest. It suggested that soil fertility declined after Chinese fir plantation replaced native broad-leaved forest through continuous artificial plantation.
Dissolved organic carbon and nitrogen in precipitation, throughfall and stemflow from Schima superba and Cunninghamia lanceolata plantations in subtropical China

Despite growing attention to the role of dissolved organic carbon (DOC) and dissolved organic nitrogen (DON) in forest nutrient cycling, their monthly concentration dynamics in forest ecosystems, especially in subtropical forests only were little known. The goal of this study is to measure the concentrations and monthly dynamics of DOC and DON in precipitation, throughfall and stemflow for two plantations of Schima superba (SS) and Chinese fir (Cunninghamia lanceolata, CF) in Jianou, Fujian, China. Samples of precipitation, throughfall and stemflow were collected on a rain event base from January 2002 to December 2002. Upon collection, all water samples were analyzed for DOC, NO3--N, NH4+-N and total dissolved N (TDN). DON was calculated by subtracting NO3--N and NH4+-N from TDN. The results showed that the precipitation had a mean DOC concentration of 1.7 mg·L-1 and DON concentration of 0.13 mg·L-1. The mean DOC and DON concentrations in throughfall were 11.2 and 0.24 mg·L-1 in the SS and 10.3 and 0.19 mg·L-1 in the CF respectively. Stemflow DOC and DON concentrations in the CF (19.1 and 0.66 mg·L-1 respectively) were significantly higher than those in the SS (17.6 and 0.48 mg·L-1 respectively). No clear monthly variation in precipitation DOC concentration was found in our study, while DON concentration in precipitation tended to be higher in summer or autumn. The monthly variations of DON concentrations were very similar in throughfall and stemflow at both forests, showing an increase at the beginning of the rainy season in March. In contrast, monthly changes of the DOC concentrations in throughfall of the SS and CF were different to those in stemflow. Throughfall DOC concentrations were higher from February to April, while relatively higher DOC concentrations in stemflow were found during September-November period.
Auto detection of wood texture orientation by Radon transform

A novel and efficient approach for detecting wood texture orientation by computer was presented. Four Matlab functions were tried to describe the relative position and orientation of wood texture pixels, to detect texture shape and to create skeletal lines image of wood texture, and BWMORPH function was found the best one. Then by Radon transform, it generated a signature composed of 180 values, each value summing up the size of texture lines that are shaped along that angle, and a two dimensional curve plot was drawn to represent the texture orientation of wood. Furthermore, it analyzed texture orientations of forty species as well as their general statistic laws, classified by softwood, hardwood, radial section and tangential section, and the results showed that texture orientation laws described by Radon transform plot and their extracting datum were in accord with the impression of wood texture that people possessed in daily life, which confirmed the validity of this new approach and their appealing utilization potentials.
In-situ Protection Management and Conservation Study of Some Medicinal Plants

In-situ study on eleven commercially important species viz;Adiantum capillus-veneris L,Bergenia ciliata (Haw) Sternb,Colchicum luteum Baker,Polygonum amplexicaule D.Den,Cuminum cyminum L,Dioscorea deltoidea Wall Kunth,L Morchella esculenta L,Paeonia emodi Wall ex H Kf,Podophyllum hexandrum (Royle) Chatt & Mukh,Valeriana wallichii DC and Viola serpens Wall ex Roxb was conducted in four locations viz; Malam (1 400 to 2 000m),Bargin (1 700 to 2 300m),Biakand (1 500 to 2 100m) and Shinko (2 100 to 2 700m).The data was recorded from both protected and unprotected sites of each site.Each site had 3 altitudinal sampling point.The density, herbage coverage and fresh biomass were determined in each locations for every species.All the investigated parameters generally showed an increase of 3 to 6 times over unprotected sites in each locations.Morchella esculenta,Dioscorea deltoidea,Colchicum luteum and Podophyllum hexandrum were absent in all unprotected sites while other species had low values in these sites.The investigated parameters of Colchicum luteum,Bergenia ciliata,Paeonioa emodi,Dioscorea deltoidea and Podophyllum hexandrum generally increased with the increasing elevation.Soil analysis,soil and air temperatures were recorded for each site.The air and soil temperature were slightly higher in open areas than in the protected site and showed decrease with increasing elevation.While the soil fertility was relatively high in protected sites as compared to unprotected area.The study shows that protection promotes the growth, distribution and occurrence of medicinal plants.It is possible with the participation of local communities to conserve these resources.
Afforestation using micro-catchment water harvesting system with microphytic crust treatment on semi-arid Loess Plateau: A preliminary result

Water harvesting is one of main measures to solve water shortage resulting from less precipitation and erratically seasonal distribution in arid and semi-arid areas. Different types of anti-infiltration treatments including mechanical and chemical to micro-catchment and their runoff efficiencies had been reported. This paper, through 5 years experiment from 1992 to 1996, is aimed at studying the impacts of microcatchment water-harvesting system (MCWHS) with microphytic crust treatment on afforestation on semi-arid Loess Plateau. The results showed that after 3 years of crust inoculation, crust had covered majority of MCWHS and the function of water harvesting had also been demonstrated partially, there were significant difference in soil moisture of shallow soil layer in three typical spring stages between crust cover and control treatments (0.05 level), and about 0.9%-6.04% increase of monthly mean soil moisture within 1m soil layer in spring of late 3 years. The impact of severe spring drought can be alleviated effectively. In the meanwhile, as crust developed on the treated surface, there are significant differences (0.05 level) for tree height (H), diameter at breast height (DBH) and diameter at ground level (DGL) at the end of the study period (1996) with the increases by 22.38%, 17.34%, and 20.49% respectively compared with the control treatment. Microphytic crust, as one of biological infiltration-proof materials, may become the optimized option for revegetation in Chinese Great West Development Strategy due to its self-propagation, non-pollution to water qualities, long use duration and relatively cost effective. Further work should be focused on the selection of endemic crust species and their batch-culture in arid environment.
工科院校微生物双语教学的初探

双语教学是国家教育部鼓励的教学方式之一,使用英文教学能使我国的微生物教学同世界接轨,有效地促进高质量人才的培养.教学中做到目的明确、概念清晰,框架授课,化难为易,探索其固有的教学规律.
雷氏纤蚤雄性的记述及雌性的形态补充

根据采自云南泸水县高黎贡山橙腹松鼠(Dremomys lokriah)体的纤蚤属蚤类标本,首次对中华纤蚤亚属SinorhadinopsyllaXie,Gong et Duan,1990和雷氏纤蚤Rhadinopsylla(Sinorhadinopsylla)leii Xie,Gong et Duan,1990雄性进行了记述,并对雌性的部分形态作了补充.
输血医学在凝血异常性疾病中的应用

凝血异常性疾病系指凝血因子减少或缺乏和凝血机制紊乱引起的出血、凝血异常性疾病.输血医学在它的治疗中起决定性作用.狭义的输血指输注血液的有形成分,广义的输血还包括血液制品.……
华南秋旱持续 西南阴雨绵绵--2004年10月

10月份,全国大部地区降水量较常年同期偏少,华南和长江中下游地区发生大面积持续性秋旱,其中广西、广东、安徽等地旱情严重.全国大部地区月平均气温接近常年同期,内蒙古东部、东北较常年同期明显偏高.月内,我国西南部分地区多阴雨寡照天气,局部出现雪灾和暴雨洪涝灾害;中东部地区频繁出现大雾天气;华南部分地区出现寒露风天气.本月,西北太平洋有3个热带气旋活动.
基于TC35I的高速公路智能收费系统的设计

介绍了SIEMENS公司的GSM网络专用模块TC35I和蓝牙无线数据通信芯片nRF401的特点,并在GSM无线通信网络环境下进行二次开发,初步实现了高速公路免停车智能收费系统.
EMG在语音信号识别中的应用

提出使用肌电信号的语音识别系统.研究证实从面部肌肉中提取的肌电信号存在语音信息.实验使用(0～9)十个数字,受试者每隔10s重复单词.讲话时用电极记录五个通道表面肌电信号.用短时傅里叶变换提取信号的特征量,并通过主成分分析降维,有效地提取特征量进行模式识别.分类错误范围在15%以下.实验表明表面肌电信号的语音识别系统有着极好的前景.
随任继周院士赴贵州省黔西南布依族苗族自治州草业考察笔记

对喀斯特地区的典型区域--贵州省黔西南布依族苗族自治州草地农业进行了为期6 d的实地考察,黔西南布依族苗族自治州具有建立生态型长绿草食畜牧业的巨大潜力和良好前景,在发展现代草地农业的初创期,狠抓奶业、肉畜生产这2个利润增长点,成效很大;全州在畜牧业生产的经营模式、体制和机制创新上做了很多有益探索,积累了一些经验.西南岩溶地区发展草地畜牧业的核心问题之一是资本运营的模式问题.由于草地畜牧业产业链较长,加之资本运营模式具特殊时空效应,其产业链上的龙头企业起耦合器作用,产业链上的龙头企业组成企业集团,创立品牌,引领整个西南岩溶地区草地畜牧业在世界经济一体化的大潮下前行,展现了岩溶地区草地畜牧业系统耦合优势,使具有独特地域特色的中国西南岩溶地区草地畜牧业在国内乃至国际占有一席之地.
森林·草地·沙尘暴

近几年,频繁发生的沙尘暴引起了人们特别的关注.如何防治沙尘暴,人们从不同的角度进行了探讨.有人说控制沙尘暴的发展,首先必须防治荒漠化[1];有人说要尽快确定旱作农业区的北界,尽快编制退耕还林还草规划等[2];有人说,"解决沙尘暴的惟一办法,就是增加森林植被,发生沙尘暴充分说明森林植被还太少"[3];还有人说,"人类是有能力改造大自然的"、"经过全面防治和综合治理,沙尘暴是可以基本消除的"[3]等.真是仁者见仁,智者见智.
苯那普利与伊贝沙坦联用对2型糖尿病患者早期糖尿病肾病的影响

血管紧张素转换酶抑制剂(ACEI)与血管紧张素Ⅱ-1型受体拮抗剂(ARB)能减少糖尿病患者尿白蛋白排泄及延缓肾损害的进展.本研究旨在评估长期(平均2年)苯那普利、伊贝沙坦及其联用对2型糖尿病(T2DM)早期糖尿病肾病(DN)进展的影响.