mlsa-iai-msu-lab/ru_sci_bench_zho_cite_reranking huggingface dataset:
Recent Trends and Recommendations for Nitrogen Fertilization in Intensive Agriculture in Eastern China

The Taihu Region in eastern China is one of China's most intensive agricultural regions and also one of the economically most developed areas. High nitrogen balance surpluses in the summer rice-winter wheat double-cropping systems are leading to large-scale non-point source pollution of aquifers. In an interdisciplinary approach, four-year (1995-1998) field trials were carried out in two representative areas (Jurong County and Wuxi City) of the Taihu Region. Five farmers' field sites were chosen in each of the 2 locations, with each site divided into "standard" (farmers' practice) and "reduced" (by 30%-40%) N fertilization. For both fertilization intensities, N balance surpluses and monetary returns from grain sales minus fertilizer expenditures were calculated in an economic assessment. Based on the field trials, the mineral N fertilizer application rates reduced by about 10% for rice and 20%-30% for wheat were recommended in 1999. Since 1999, the research focused on the trends in N fertilizer application rates and changes in grain and agricultural commodities prices.Summer rice N fertilizer use, in Wuxi City as of 2001, dropped by roughly 25%, while for winter wheat it decreased by 10%-20%, compared to the 1995-1998 period. This has been achieved not only by grain policy and price changes, but also by an increased environmental awareness from government officials. Nitrogen balance surpluses in Anzhen Town (of Wuxi City) have consequently diminished by 50%-75% in rice and by up to 40% in wheat, with reductions being achieved without concomitant decreases in physical grain yields or returns from sales minus fertilizer costs.
Using GIS Spatial Distribution to Predict Soil Organic Carbon in Subtropical China

Spatial distribution of organic carbon in soils is difficult to estimate because of inherent spatial variability and insufficient data. A soil-landscape model for a region, based on 151 samples for parent material and topographic factors,was established using a GIS spatial analysis technique and a digital elevation model (DEM) to reveal spatial distribution characteristics ofsoil organic carbon (SOC). Correlations between organic carbon and topographic factors were analyzed and a regression model was established to predict SOC content. Results for surface soils (0-20 cm) showed that the average SOC content was 12.8 g kg-1, with the SOC content between 6 and 12 g kg-1 occupying the largest area and SOC over 24 g kg-1 the smallest. Also, soils derived from phyllite were the highest in the SOC content and area, while soils developed on purple shale the lowest. Although parent material, elevation, and slope exposure were all significant topographic variables (P ＜0.01), slope exposure had the highest correlation to SOC content (r = 0.66). Using a multiple regression model (R2 = 0.611) and DEM (with a 30 m × 30 m grid), spatial distribution of SOC could be forecasted.
Red Ratings for Loess-Paleosol Sequences on China's Loess Plateau and Their Paleo-Climatic Implications

Comparisons of red ratings (RR) with Fed, Fed/Fet, clay content, and magnetic susceptibility (X) of two loess-paleosol sequences at Luochuan and Lingtai on China's Loess Plateau were conducted to study the possible relationship between RR and pedogenic degrees of the two loess-paleosol sequences, and to discuss whether the RR could become new paleo-climatic indicators. Results showed that the RR of the two loess-paleosol sequences had positive, highly significant (P ＜ 0.01)correlations with: 1) citrate-bicarbonate-dithionite (CBD) extracted iron (Fed), 2) ratios of CBD extracted iron to total iron (Fed/Fet), 3) clay (＜ 2 μm), and 4) magnetic susceptibility (X). This suggested that the RR of these loess-paleosol sequences could indicate degrees of loess weathering and pedogenesis and were potential paleo-climatic proxies. The strong correlations of RR to Fed and X also implied that during pedogenic processes, pedogenic hematite in loess and paleosols were closely related to the amount of total secondary iron oxides and pedogenic ferrimagnetic minerals (predominantly maghemite）.
低糖橘梗果脯生产工艺

以鲜橘梗为原料,着重对影响低糖橘梗果脯感官质量的工艺进行了研究,其最佳工艺参数为:浸泡液Ⅰ含食盐0.2%、ClO2适量,浸泡时间为12 h;浸泡液Ⅱ为0.5%CaCl2,浸泡时间为1 h,漂洗15 min.煮制液由蔗糖35%、柠檬酸0.3%组成.煮制时间90～100 min,采用一次煮制法.糖渍时间为12～18 h.烘烤温度60～65℃,时间14～16 h.
基于Pro/E的通用机械零件CAD系统设计

介绍了基于Pro/Engineer平台,在Pro/Toolkit和Visual C+ +等开发环境下,采用面向对象的技术,设计开发的一个通用机械零件CAD系统的一些方法和技术.该系统能实现常用机械零件的设计计算、三维参数化造型和工程图生成等功能.系统界面友好、开放性好,便于进一步开发和完善,实用性好.
歧北凹陷储层碳酸盐胶结物同位素特征与次生孔隙成因

歧口凹陷位于渤海湾盆地黄骅坳陷中部,其中的油气田经过几十年的勘探开发后,剩余资源量主要分布在埋深＞ 3 500 m的深层.而深部储层的储集空间主要为次生孔隙.所以,深层油气勘探的关键问题之一就是在高温、高压条件下寻找储层的次生孔隙发育带.本文试图应用同位素地球化学的方法,分析储层次生孔隙的成因,为该地区以及渤海湾其他凹陷储层次生孔隙发育带的预测奠定理论基础.
利用DEM进行地形高程剖面分析的新方法

地形分析是地质地貌研究的重要手段,是以地形、地质图,数字图像资料以及详细野外地质调查等为研究基础,在新构造研究中,特别是活动构造地貌研究中占有举足轻重的地位.进行地形地貌分析研究,主要包括高程剖面分析,坡度、坡向分析以及流域分析等.
印支运动在昆仑地区的表现特征

对昆仑地区的构造运动,人们谈论得最多的是加里东运动,面对最终形成昆仑褶皱山系的印支运动很少进行讨论.关于昆仑地区印支运动的存在是一个不容置疑的事实.首先它造成了亚洲最长的山脉昆仑山系的形成,其次与它紧相连其南的世界著名的巴颜喀拉地槽的关闭.
深井地震、地球物理长期观测与研究——现代地球科学的新进展

地球科学是以观测为基础的综合科学。随着地球科学研究的深入发展以及解决人类所面临着的环境、资源、防灾等科学问题的需要,20世纪90年代以来,世界大陆、大洋科学钻探工程研究以及在钻孔深井内进行的地震、地球物理长期观测得到迅速发展,取得了令人瞩目的研究成果,成为21世纪地球科学发展中的新热点。
内蒙古东部与夕卡岩型矿床有关的花岗岩氧同位素特征——以浩布高矿床为例

浩布高-白音诺铅锌铜锡矿床位于大兴安岭山脉的中南段和黄岗-甘珠尔庙锡铅锌成矿带的北东端(Chu,2002),属夕卡岩型矿床。已经发表的论文中提出浩布高-白音诺地区与Cu-Zn-Pb(-Sn)成矿有关的碱性花岗岩有非常特殊的、可低到-8‰-+1‰的原始δ18Ov-SMOW(‰)值,因此认为该区域岩浆具有不正常的原始氧同位素组分(张德全等,1993;牟保磊等,1997),即该区深部存在低氧的岩浆源。
逐渐规范市场上的A股新股长期强势表现研究

本文通过对1997～1999年上市新股的3年期表现的研究发现：（1）无论采用等权平均法还是市值加权平均法，新股的3年期回报要高于同期市场回报；（2）新股的发行量、首日换手率和首日市净率对新股的3年超额回报具有显著影响，而上市时间、上市地点、发行价格、首日超额回报、首日市盈率和行业等因素不具有显著影响。
工业化进程中村庄经济的变迁——以东部地区的一个发达村庄为例

本文以作者长期进行跟踪调查的东部地区某发达村庄20余年的经济湾迁为切入点，应用发展经济学的基本分析框架，对工业化进程中发达村庄经济发展轨迹进行了实证研究，并在此基础上尝试提炼工业化进程中发达村庄经济发展的一般性经验，同时探讨发达村庄经济的未来可持续发展问题，并提出发挥发达村庄集体的组织资源优势、大力发展农民合作组织将是一条有效途径。
县乡财政困难及其对财政支农能力的影响

除少数发达地区外，县乡政府的财政支农能力严重虚弱，几乎成为普遍现实。形成这种局面的根本原因，在于县乡财政的严重困难。而形成县乡财政严重困难的根本原因，多在体制性或政策性方面，并非短期内容易消除的。因此，增强县乡财政的支农能力具有艰难性，现行的财政支农政策应做5方面的调整。即明确中央和省级政府在欠发达地区财政支农中的主体地位；整合资源，突出重点，加强监督，优化调整政府支农方式；从战略上培育县乡政府的支农能力，逐步明晰各级政府财政支农的事权。
人工模拟降雨大厅及模拟降雨设备简介

黄土高原土壤侵蚀和旱地农业国家重点实验室人工模拟降雨大厅位于陕西杨陵农科城,降雨大厅面积为1 296 m2,其规模为世界上第二大模拟降雨大厅(图1).该降雨大厅为我国土壤侵蚀与水土保持科学定量化研究提供了平台。
Unified Model in Identity Subspace for Face Recognition

Human faces have two important characteristics: (1) They are similar objects and the specific variations of each face are similar to each other; (2) They are nearly bilateral symmetric. Exploiting the two important properties, we build a unified model in identity subspace (UMIS) as a novel technique for face recognition from only one example image per person. An identity subspace spanned by bilateral symmetric bases, which compactly encodes identity information, is presented. The unified model, trained on an obtained training set with multiple samples per class from a known people group A, can be generalized well to facial images of unknown individuals,and can be used to recognize facial images from an unknown people group B with only one sample per subject.Extensive experimental results on two public databases (the Yale database and the Bern database) and our own database (the ICT-JDL database) demonstrate that the UMIS approach is significantly effective and robust for face recognition.
Method of Direct Texture Synthesis on Arbitrary Surfaces

A direct texture synthesis method on arbitrary surfaces is proposed in this paper. The idea is to recursively map triangles on surface to texture space until the surface is completely mapped. First, the surface is simplified and a tangential vector field is created over the simplified mesh. Then, mapping process searches for the most optimal texture coordinates in texture sample for each triangle, and the textures of neighboring triangles are blended on the mesh. All synthesized texture triangles are compressed to an atlas. Finally, the simplified mesh is subdivided to approach the initial surface. The algorithm has several advantages over former methods:it synthesizes texture on surface without local parameterization; it does not need partitioning surface to patches;and it does not need a particular texture sample. The results demonstrate that the new algorithm is applicable to a wide variety of texture samples and any triangulated surfaces.
莱姆病73例治疗体会

自河南油田在新疆探区中标后,采油工厂职工轮流去新疆油田工作.几年来先后发现部分职工及探亲家属感染莱姆病,为此河南石油勘探局自1998年至今先后3次对全局入疆返回人员进行莱姆病调查,其中采油二厂自愿接受检查706人,男677人,女29人,确诊感染(患)莱姆病毒73例并在本院接受治疗,现把诊治体会报道如下.……
老年根面龋144颗治疗体会

由于食物嵌塞,牙龈增龄性萎缩,口腔卫生差及长期配戴假牙等原因,根面龋在中老年人群中发生率较高,其临床损坏的特殊性使得其治疗十分困难[1,2].作者针对144例不同程度根面龋患者,选用玻璃离子水门汀进行充填治疗,临床效果较好,报道如下.……
术前急性高容量血液稀释用于老年患者40例临床观察

术前急性高容量血液稀释(acute hyperroleic hemodilution, AHH)已作为一种新的减少异体输血的方法用于临床,但有关AHH用于老年患者的可行性尚未见报道.作者拟通过观察AHH对血液动力学及凝血功能的影响来评价其用于老年患者的可行性.……
二维超声与心电图诊断心肌缺血结果分析

冠心病早期多有心肌缺血的表现,如能早期诊断并及时治疗,对于提高该病的治愈率、降低病死率具有重要意义.1999年1月至2001年1月作者应用二维超声(2DE)与心电图(ECG)检查诊断心肌缺血患者95例,并对结果进行分析,报道如下. ……
Streamflow and Soil Moisture of Agroforestry and Grass Watersheds in Hilly Area

A study was conducted in a hilly area of Sichuan Province,Southwestern China, to compare the streamflow and soil moisture in two upland watersheds with different land use patterns. One was an agroforestry watershed, which consisted mainly of trees with alder (Alnus cremastogyne Burkill) and cypress (Cupressus funebris Endl.) planted in belts or strips with a coverage of about 46%, and the other was a grassland primarily composed of lalang grass (Imperata cylindrica var. major (Nees) C. E. Hubb.), filamentary clematis (Clematis filamentosa Dunn) and common eulaliopsis (Eulaliopsis binata (Retz.) C. E. Hubb) with a coverage of about 44%. Streamflow measurement with a hydrograph established at the watershed outlet showed that the average annual streamflow per 100 mm rainfall from 1983 to 1992 was 0.36 and 1.08 L s-1 km-2 for the agroforestry watershed and the grass watershed, respectively. This showed that the streamflow of the agroforestry watershed was reduced by 67% when compared to that of the grass watershed. The peak average monthly streamflow in the agroforestry watershed was over 5 times lower than that of the grass watershed and lagged by one month. In addition, the peak streamflow during a typical rainfall event of 38.3 mm in August 1986 was 37% lower in the agroforestry watershed than in the grass watershed. Results of the moisture contents of the soil samples from 3 slope locations (upper, middle and lower slopes) indicated that the agroforestry watershed maintained generally higher soil moisture contents than the grass watershed within 0-20 and 20-80 cm soil depths for the upper slope, especially for the period from May through July. For the other (middle and lower) slopes, soil moisture contents within 20-80 cm depth in the agroforestry watershed was generally lower than those in the grass watershed, particularly in September, revealing that water consumption by trees took place mainly below the plow layer. Therefore, agroforestry land use types might offer a complimentary model for tree-annual crop water utilization.
Effects of annexins II and V on survival of neurons and astrocytes in vitro

AIM: To study the effects of annexins II and V on the survival and neurite outgrowth of primary cultured neurons and the survival of astrocytes after peroxide and hypoxia insults in vitro. METHODS: Annexins II and V proteins and/or corresponding antibodies were added to the medium of primary neocortical cultures. H2O2 and NaN3 were used to induce neuron injury, respectively. Lactate dehydrogenase (LDH) release was measured. RESULTS: Addition of annexin II or V into the culture medium did not affect the normal survival and neurite outgrowth of cortical neurons. However, when an antibody against annexin II or V was added to the culture, the survival and neurite outgrowth of these neurons markedly declined. Further, addition of the two annexins into cortical cultures after peroxide and hypoxia insults markedly reduced the LDH release and cell death. CONCLUSION: Annexins II and V are essential for the survival and neurite outgrowth of developing cortical neurons, the survival of glial cells, and protect neurons and glial cells against peroxide and hypoxia injuries.
广东省肥料流通市场中存在的问题与对策

目前,广东省肥料流通市场,从表面看,是以农资系统和农技系统为主,生产厂家直销在市场销售中所占的份额不多;从销售额来看,农资系统占大头;从销售品种看,农技系统占有优势的品种主要是国产复混肥和新型肥料品种.
Plateau Marsh Methane Oxidation as affected by Inorganic N

In a series of laboratory incubations using soils of two contrasting sites from a temperate marsh on the QinghaiTibet Plateau,potential methane (CH4) oxidation rates were measured to study the effects of inorganic N inputs on CH4 oxidation. For a drained site,subsurface peat (5-15 cm) at an initial 20 μL CH4 L-1 showed a significantly different (P＜0.05) CH4 oxidation rate compared to other soil depths,with a maximal rate of 20.9 ng CH4 gDW (dry weight)-1h-1; the underlying mineral soil layers (15-30 and 30-50 cm) also had a strong CH4 oxidation capacity at about an initial 2000 μL CH4 L-1. With a waterlogged site,the CH4 oxidation rate in an aerobic incubation was significantly greater (P＜0.05) in the surface soil layer (0-5cm) compared to the 15-30 and 30-50 cm depths. There was generally no or a very weak effect from addition of NO3- on CH4 oxidation. In marked contrast,NH4+ salts,such as (NH4)2SO4,NH4C1 and NH4NO3,exhibited strong inhibitions,which varied as a function of the added salts and the initial CH4 level. Increasing NH4+ usually resulted in greater inhibition and increasing initial CH4 concentrations resulted in less. NH4+ inhibition on CH4 oxidation in natural high-altitude,low-latitude wetlands could be as important as has been reported for agricultural and forest soils. The NH4+ effects on the CH4 oxidation rate need to be further investigated in a wide range of natural wetland soil types.
QTLs for Rice Leaf Chlorophyll Content Under Low N Stress

Quantitative trait loci (QTLs) for chlorophyll content of a rice leaf were mapped on to the molecular marker linkage nutrient solution and soil culture experiments to detect rice nitrogen nutrition status under low N stress. A chlorophyll meter was used to measure the soil plant analysis development (SPAD) value of the topmost fully expanded leaf as the index of chlorophyll content that expressed nitrogen status in rice plants. Totally 3 QTLs for SPAD values, two on chromosome 3 located at interval RG179-CDO337 and RG348-RZ329, respectively, and one on chromosome 10 at interval RZ500-RG134, were detected under stressed conditions of low N in the soil and/or nutrient solution culture experiments.One QTL located at interval RG179-CDO337 on chromosome 3 associated with a relative change in SPAD value from a high N level to a low N level in the soil culture experiment was also detected. Based on the different responses to low N stress between the two parents, it was supposed that the QTLs identified in this study associated with nitrogen efficiency in rice at low N levels might be useful in applying marker technology to rice breeding programs.
Thermodynamic Foundation for High Temperature Electrochemistry

Thermodynamic concepts required for the thermodynamic calculation of the potentials of electrodes for high temperature applications are briefly reviewed. A thermodynamic approach to the calculation of half cell potentials and the standard chemical potential of an electron at high temperatures which are related to the Standard Hydrogen Electrode(SHE) is discussed. As examples, an external Ag/AgCl reference electrode and a YSZ (Ag |O2) pH sensor for high temperature applications are analyzed by using the thermodynamic approach to derive a high temperature pH measurement equation. The two electrodes are employed to measure high temperature pH and the measured pH was compared with the calculated pH by using a solution chemistry method. Concepts and principles for electrode kinetics are also briefly introduced and a modification to the Tafel equations is suggested.
Tungsten Promoted Ni/Al2O3 Catalysts for Carbon Dioxide Reforming of Methane to Synthesis Gas

A series of tungsten promoted alumina supported nickel catalysts has been prepared for the carbon dioxide reforming of methane to synthesis gas. The catalysts have been characterized by means of XRD, TEM,and Laser Raman spectroscopy. It is shown that the addition of tungsten to the nickel catalyst can stabilize the catalyst and increase the resistance to carbon deposition. Adding a suitable amount of tungsten can also increase the catalyst activity to be close to that of supported noble metal catalysts. The carburisation of the tungsten modified nickel catalyst decreases the catalyst activity at lower reaction temperatures(＜1123K),but has no effect on the catalyst performance at higher reaction temperatures. The alumina supported nickel catalyst modified by 0. 67 % (mass fraction)WOs has the equivalent equilibrium constant of the dry reforming reaction to that of alumina supported 5% (mass fraction) Ru at 873 K, and also has a lower activation energy for dry reforming than the latter.
流动注射在线检测微生物代谢产物中糖脂类生物表面活性剂

1 引言　　菌种筛选工作是生物表面活性剂研究和制备的基础,主要是通过适时监测各出发菌株在发酵过程中生物表面活性剂产量和发酵性状稳定性实现的.目前常用的监测菌株产表面活性剂情况的方法存在很多不足:发酵过程中停机取样易造成杂菌污染和发酵条件改变;发酵液用量大,测定周期长,实验操作繁杂.用流动注射分析(FIA)技术建立的在线测定微生物代谢产物中糖脂类生物表面活性剂含量的方法克服了上述不足,对12株产糖脂类生物表面活性剂的原始菌株进行复筛,获得满意的结果.
On Knowledge Workers in the Knowledge Society

The paper makes a study on our present knowledge society and knowledge workers. After analyzing the reason that knowledge workers are the newly emerging dominant group in this knowledge society, it gets to the point that the real leadership in the age of knowledge are knowledge workers. Yet, they have to actively organize and learn together, otherwise, they would be same as the workers of industrial model. Only through organizational learning can knowledge workers turn into a very innovative learning organization dancing with the unexpected.
RP-HPLC测定小儿感冒退热糖浆中连翘苷的含量

小儿感冒退热糖浆是由连翘、大青叶、紫苏叶、桑枝等7味中药制成的中药制剂,具有清热解毒、疏风解表之功效,临床上用于治疗伤风感冒,畏冷发热,咽喉肿痛,头疼咳嗽.原有的<广东省药品标准>仅规定了3个理化反应作为定性鉴别来控制质量,尚未有定量指标.
眼针治疗支气管哮喘78例

支气管哮喘是一种常见的呼吸道变态反应性疾病,多由气候变化、饮食不良、精神刺激等因素诱发,呈反复发作性.笔者近年运用眶周眼区穴的眼针治疗方法,治疗支气管哮喘急性发作78例,获得良好效果,现报道如下.
苦竹叶的化学成分研究

苦竹叶为禾本科植物苦竹Pleioblastus amarus(Keng)Keng f.的嫩叶,在我国有较广泛的应用.主治热病烦渴、失眠、小便短赤、口疮、目痛、失音和烫火伤[1].文献记载[2]其含有黄酮类、萜类、生物碱、酚酸和挥发油等成分,黄酮类化合物具有多方面的生物活性,可用作天然药物、抗氧化剂、防腐剂等,其应用开发具有广阔的前景。
水稻双膜育秧技术

双膜育秧作为水稻机械化栽插配套技术,具有投资少、成本低、操作简单、管理方便、经济效益高等特点,可节本增效948元/hm2.其重点是搞好播前准备、提高播种质量和强化秧田管理.
更昔洛韦治疗新生儿巨细胞病毒肝炎的疗效评价

目的:观察更昔洛韦治疗新生儿巨细胞病毒(CMV)肝炎的效果.方法:将50例CMV肝炎患儿随机分成两组.治疗组(30例)在常规护肝的基础上加用更昔洛韦,对照组(20例)给予常规护肝治疗.结果:治疗组的黄疸消退时间、谷丙转氨酶恢复时间均较对照组明显缩短,CMV病原检测阴转率及总有效率显著高于对照组,两组比较差异有显著性(P<0.05).定期进行血常规、肝肾功能检查,未见更昔洛韦的相关副作用.结论:更昔洛韦治疗CMV肝炎可显著降低转氨酶,促进黄疸消退,同时CMV病原检测有较高的阴转率,且无血液、肝肾方面的副作用.
茶叶功能性成分的化学组成及应用

茶寓养生、保健、防癌功能于一体,这是其他饮料无法比拟的.茶叶的功能性是茶叶中各种有效成分综合作用的结果,茶叶的综合利用已成为茶叶发展中的新亮点.笔者主要介绍了茶叶功能性成分的化学组成及其开发利用.
一个陆地棉半胱氨酸蛋白酶全长cDNA的克隆及其序列特征分析

植物体内的半胱氨酸蛋白酶（CP）在一系列重要的生理代谢途径中发挥作用，在种子萌发过程中它们与许多贮藏蛋白的降解有关[1]，它们可能催化大多数蛋白前体向成熟蛋白转化过程中的翻译后加工过程[2,3]，从而为幼苗的生长发育提供营养物质；半胱氨酸蛋白酶也与叶、子房、根瘤和花等的发育、衰老生理有关；此外还可能受各种外界胁迫因子，如盐碱和干旱、低温、伤害、乙烯等的诱导而表达。本实验室对陆地棉纤维初始发育cDNA文库的一些克隆进行了随机测序，从中发现一个与拟南芥等半胱氨酸蛋白酶基因同源性较高的cDNA片段。本研究利用该片段从一个陆地棉纤维cDNA文库中筛选出了它的全长基因序列，并对其特征进行了分析。
kerb 50 WP土壤处理防除油菜田杂草的研究

试验结果表明:用kerb 50 WP土壤处理防除油菜移栽田杂草,用量以1 500 g/hm2为宜.在此用量下,油菜无明显药害,对看麦娘、繁缕的防效在90%以上.
中籼稻新品种(组合)比较试验总结

笔者从安徽省肥东县中籼稻"压劣扩优"的需要出发,于2002年对引进的13个中籼稻新品种(组合)进行比较试验,经产量方差分析、多重比较和对不同品种(组合)的综合评价,筛选出产量高、米质佳、抗病力强、生育期适宜的杂交中籼稻新组合"丰优香占",并提议优先示范、推广.
黑小麦76的特征特性及高产栽培技术

黑小麦76是河南省农业科学院作物遗传研究所孙善澄研究员,应用小麦属间远缘杂交、染色体工程与组织培养等生物技术育成的黑小麦新品种,具有较高的营养和医疗保健价值,为高营养、高免疫品种,其产品市场前景十分广阔.笔者介绍了其主要特征、特性及栽培技术措施.该品种适合于江苏省金湖县晚粳茬口及棉花茬口种植,表现为迟播早熟,抗病、抗逆性强,籽粒灌浆饱满,成熟时茎秆紫红发亮,熟相好.
优质水稻苏香粳1号病虫草害无公害防治技术规程

根据农业部制订的绿色食品生产对产地环境、技术条件、农药使用准则、肥料使用准则等相关规定,结合苏香粳1号优质稻生产,规定了苏南地区苏香粳1号病虫草防治无公害技术的范围、定义、基本要求及栽培控制和药剂防治技术,为太湖地区水稻病虫草防治的规范化、标准化和无害化提供科学依据.
荧光法和色谱法测定对一二甲氨甲基杯〔8〕芳烃与二苯胺磺酸钠的包结常数

分子识别是生物识别的基础，其机理的研究对理解生命现象具有重要意义。水溶性杯芳烃是研究分子识别的重要主体分子，本实验报道合成了水溶性的5，11，17，23，29，35，41，47-八（N，N一二甲氨甲基）一杯〔8〕芳烃（以下简称杯胺），采用荧光法测定了其与二苯胺磺酸钠的包结常数，研究了包结作用。以杯胺为流动相添加剂，二苯胺磺酸钠为溶质，采用色谱法进行了对比研究，结论相符。
DTOPSIS法综合评价玉米新品种的研究

运用DTOPSIS法对1999～2000年度河南省玉米区域试验(直播组)的品种进行综合评价,探讨DTOPSIS法在多因素综合评价玉米新品种中的应用.结果表明,该法比单用产量分析更为合理,并对DTOPSIS法在玉米新品种综合评价中的有关问题进行了探讨.
六例染色体异常与不良孕育史的关系

例1 男,30岁,其妻27岁,结婚3年,因妻子连续发生3次不良孕育史就诊.第1胎于孕7月时,B超显示胎儿"双肾积水",经引产后证实.此后2胎分别于孕2月和孕3月时自然流产,夫妇外周血淋巴细胞染色体核型分析:妻子核型正常;丈夫核型为46,XY,t(4;9)(q12;p22)(4pter→4q12∷9p22→9pter;9qter→9p22∷4q12→4qter),家系调查发现,其父也是同样的平衡易位核型.
甲泼尼龙冲击治疗原发性肾病综合征(附31例报告)

目的:探讨甲泼尼龙(MP)治疗原发性肾病综合征(PNS)的近期疗效及安全性.方法:回顾分析近7年MP用量≥0.5 g/d,至少连续3 d冲击治疗的PNS 31例患者的临床资料.结果:1周内完全缓解率48.4%(15/31),部分缓解率41.9%(13/31),总缓解率90.3%;相关不良反应出现率25.8%(8/31),但无严重不良反应出现.结论:MP冲击治疗对PNS来说不失为一种有效及相对安全的疗法.
我国物探技术的进步及展望

油藏描述题目很大，在不同的油气藏类型和不同的油气田勘探开发阶段，描述的内容和精度有很大的不同，因此对技术的需求也就不同。在这里我们仅限于勘探阶段，而且以地震技术为核心来开展一些讨论，其目的是开拓地震技术的应用领域，针对地震技术自身发展面临的问题，提高地震技术在油气勘探中的效益。
人外周血单个核细胞BLyS127-285的克隆、表达和纯化

目的:从人外周血单个核细胞中克隆出B淋巴细胞刺激因子(B lymphocyte stimulator,BLyS)胞外区片段BLyS127-285,并进行表达和纯化.方法:采用RT-PCR技术,从人外周血单个核细胞中扩增BLyS127-285,测序后构建原核表达载体,经IPTG诱导表达及Ni-NTA纯化,以SDS-PAGE和Western印迹法进行鉴定.结果:RT-PCR扩增出一个480 bp的DNA片段,序列分析与GenBank中报道的人BLyS127-285的cDNA序列一致,该胞外区片段在大肠杆菌中得到高效表达,表达量可达菌体总蛋白的49.8%,纯化后纯度可达97.0%.结论:成功地从人外周血单个核细胞中扩增出人BLyS127-285,并获得高效表达,其纯化产物为进一步研究其功能、开发与临床应用奠定了基础.
初析财政支农资金监督管理体制的建立

我国财政支农资金投放存在的缺陷,主要表现为"空头"和被挤占现象非常突出;对于中央和省市的财政支农专项资金,县乡财政往往无力提供配套;资金使用分散,管理漏洞大,导致支农效益递减.笔者分析了其形成的深层次原因,并提出了建立财政支农资金监督管理体制的若干措施.
关于村级债务化解的法律思考--对村级债务承担主体的透析

村级债务在农村普遍存在,必须从法律视角予以关注,依法化解.而化解的一项重要工作就是要甄别债务承担主体,分清政府、村委会、农民以及村干部的责任,只有这样,才能真正发挥功效.
芹芽采后无污染贮藏保鲜技术研究

在贮藏温度5℃左右、湿度90%以上的条件下,通过臭氧、负离子气与植物源保鲜剂的配合使用,可使采后芹芽的保鲜期从1d延长到12d以上,含水率、脆度率分别保持在90%、85%以上,且VC含量无明显变化.
菜用甘薯的特性*配套栽培和加工技术

菜用甘薯的茎尖嫩叶富含蛋白质、矿物质、维生素和高纤维素等,不但营养丰富、味道鲜美,并具有防癌、抑癌之功效,是一种新型的保健蔬菜.笔者通过对菜用甘薯主要特性的分析,提出了菜用甘薯的栽培技术及其综合利用,从而更有效地提高菜用甘薯的经济效益.
高档鲜切花百合保鲜配方的研究

通过测定一系列的形态指标(花瓣萎蔫程度、叶色及变化程度、花径)和生理指标(干物质、丙二醛、SOD、蛋白质含量),比较不同保鲜剂配方对麝香百合的保鲜效果.结果表明:4种保鲜剂配方均有一定的保鲜效果,其中以3%蔗糖+150mg/L 8-AQ +150mg/L柠檬酸+20mg/L 6-BA+20mg/LGA3为最佳配方;赤霉素在鲜切花保鲜中能有效防止叶片变黄.
2002-2003年我院3种抗癫痫药物血药浓度监测结果分析

采用荧光偏振免疫分析法(FPIA)监测2002年至2003年3种抗癫痫药物血药浓度.结果表明,药物的毒副作用直接影响药物的使用量,其中苯妥英钠毒副作用最大,过量的检出率最高,受检例数最少.提示监测血药浓度是实施个体化给药的重要手段之一,具有重要的临床意义。
2002年河南省春露地丝瓜品种区试品种评述

为筛选适合河南省春露地栽培的丝瓜品种,对5个参试品种的早熟性、丰产性、抗病性等性状进行了试验比较,并对区试结果进行品种评述.试验结果表明,驻丝瓜1号稳产性和综合性状好,丰产潜力大.
补益抗衰老口服液延缓衰老作用的研究

补益抗衰老口服液,由人参、地黄、黄芪等组成.本文通过实验,以小鼠红细胞内的超氧化歧化酶和肝内的过氧化脂质、蛋白质含量为指标,观察了该药抗衰老的功效,还提示其具有提高机体免疫功能的作用.
刘寄奴的本草考证及紫外光谱法鉴别

本草考证结果认为,古代本草记载的刘寄奴应为菊科植物奇蒿Atemisia anomala,现今北方各地使用的多为玄参科植物阴行草Siphonostegia chinensis,但不是历史上沿用的主流品种.广东则使用菊科植物白苞蒿Atemisia lactiflora.应用紫外光谱法对阴行草和白苞蒿进行了比较鉴别,两者的零阶、一阶和二阶光谱均有明显差别,易于鉴别.
瞬时表达黄瓜花叶病毒部分复制酶基因和番茄花叶病毒移动蛋白基因的dsRNA能阻止相关病毒的侵染

根癌农杆菌介导的瞬时表达法已开始用于研究RNA沉默[1],在非转基因植物细胞中,如能建立借助于根癌农杆菌介导的瞬时表达法.考察反向重复片段转录出的dsRNA对入侵病毒的干涉作用,则可以快速预测所构建重组载体用于抗病毒基因工程的效果.本研究证明用根癌农杆菌浸润法在植物的叶片组织中瞬时表达dsRNA,可以阻止相关病毒的侵染.……
20例早产儿颅内出血的医原性因素分析

早产儿颅内出血是新生儿科常见的严重疾患,易有神经系统后遗症,且病死率高。笔者对我科20例与医原性因素相关的早产儿颅内出血进行分析,为医护人员避免医原性早产儿颅内出血的发生提供帮助。1临床资料1997年8月—2003年8月住院的早产儿,胎龄为32～37周,体质量<1.5kg8例,1.6～2.5kg12例。有围产期窒息史9例,均于生后3d内入院。入院原因:体温低伴拒乳8例,吸入性肺炎7例,缺氧缺血性脑病5例,硬肿症5例,红细胞增多症4例。患儿均于入院2d内做头颅CT或B超检查,首查均未发现有颅内出血征象。因入量不足或有休克、脱水表现快速补液时,4例出现烦躁、惊厥及肌张力
加强审计理论研究 推动审计事业繁荣——“中国会计学会审计专业委员会2004年年会暨首届审计理论与实务国际论坛”观点述评

中国会计学会审计专业委员会 2 0 0 4年年会暨首届审计理论与实务国际论坛由东北财经大学会计学院、财务与会计研究中心承办 ,于 10月 2 3～ 2 4日在大连举行。来自全国及日本、韩国、中国台湾地区的专家学者近 10 0人参加了本会。