黑玉米不同品种栽培技术

本文通过不同类型黑玉米品种的实验，阐明了黑玉米不同品种的营养成分，生物学特征，植物学特性及不同的高产栽培技术。并说明了不同类型品种的不同用途及各类型的适用性；不同的品种其栽培管理水平，条件不同，其产量，品质等也不同。     

大学生学习焦虑因素分析

本文通过对不同性别、不同年级、不同专业、不同学习成绩、不同院校等不同群体大学生多种因素的分析，试图了解目前大学生学习和生活中的各种焦虑，以期帮助大学生减轻心理上的焦虑．探寻适合大学生学习的方法和途径。     

英汉思维模式的差异对翻译的影响

英语汉语两种不同语言产生了两种不同的思维模式,不同的文化理念.本文通过美汉思维模式之问的对比,进而探讨了不同思维模式下的不同语言方式,以及思维模式对翻译的影响.     

经济分析的等值原理

设计方案中所考虑的费用和效益，发生于不同时间，不同时间的钱、不同通货膨胀率的线、不同风险的线，均具有不同的价值。为进行科学的经济分析和评价，在工程经济学中引进了等值换算的重要概念。文中分别阐述了时间价值、通货膨胀及不同风险的等值计算。     

施工图预算与施工预算的联系与区别

指出了施工图预算与施工预算的联系在于:都是依据施工图计算工作量、都是一种预计的目标费用、都是以单位工程为编制对象.区别在于:发挥的作用不同、依据的定额不同、适用的范围不同、编制的单位和审批部门不同、编制的时间不同、编制的总额不同.     

宝钢高炉水淬矿渣水硬性的分析

不同高炉矿渣性能存在差别的主要原因是不同高炉渣水淬工艺的差别引起矿渣玻璃体结构的差异.通过各种试验测试宝钢不同高炉矿渣的自身快速水硬性变化、不同高炉矿渣在不同养护温度下不同养护龄期强度变化以及不同高炉矿渣在水泥熟料激发下的强度变化,从而分析各种外界因素对其活性的影响程度.结果表明,宝钢高炉矿渣具有较高的水硬性,且随着时间的增长而增长.     

施工图预算与施工预算的联系与区别

指出了施工图预算与施工预算的联系在于:都是依据施工图计算工作量、都是一种预计的目标费用、都是以单位工程为编制对象.区别在于:发挥的作用不同、依据的定额不同、适用的范围不同、编制的单位和审批部门不同、编制的时间不同、编制的总额不同.     

不同类型加热炉的蓄热式燃烧设计

针对不同炉宽加热炉,不同炉膛高度加热炉,普碳钢加热炉与合金钢加热炉的不同,端进出料加热炉与侧进出料加热炉的不同,提出相关蓄热式燃烧设计思路,重点提出实现空间燃烧的设计方法,为不同类型加热炉的蓄热式燃烧设计优化提出建议.     

SY—230Ⅱ型短应力线轧机与BPY—1250—10型交——交变频电机匹配工艺的优化

本文主要讨论了各种不同钢种、不同规格的轧材的生产特点、根据不同的生产特点采用不同的轧制速度，达到减少轧制故障，提高轧机有效作业率和产品质量的目的。     

不同技术平台下的生产流程管理

通过对不同技术平台下生产流程的优化,对不同产品的生产组织更加具有规范性,改变了以往＂相对混杂,互相干扰＂的组织方式,不同产品的生产组织流程更加清晰化,从而能更合理组织不同产品的生产,使产线物流运行更加顺畅,实现不同品种具有不同的交付方式或周期,有效缩短了产品的平均制造周期。     

等温压缩对高强度汽车钢WHT1300HF的马氏体相变及微观组织的影响

通过等温形变研究了形变参数(形变温度、形变速率、形变量)对高强度汽车钢WHT1300HF的微观组织转变和形貌的影响规律。研究结果表明:增加奥氏体等温形变量,有利于铁素体的缺陷形核,促进了形变奥氏体向铁素体转变;奥氏体的形变强化导致马氏体相变阻力增大,马氏体相变开始温度(Ms)下降,细小晶粒数量和小角度晶界数量增多;增加奥氏体等温形变(40%)速率能同时促进马氏体和铁素体相变,但马氏体体积分数和小角度晶界数量减少,细小晶粒数量略有提高;降低等温形变温度加剧奥氏体的形变强化,导致Ms温度下降,马氏体体积分数、小角度晶界比例减少,细小晶粒数量增多,铁素体含量明显增加。     

Nature of the curves of the cranial vault and their relationship with various brain structures

A radiometric investigation for various angles of two dry craniums and of the encephalographic or cerebral arteriographic pictures of 250 subjects has revealed the following facts: The architectural lines of the dome of the skull found by orthogonal projection of the profile, from the front, and in vertical projection, are hyperbolic spirals starting from the base of the skull and converging on the sphenoid. These lines join up in the parietal region forming a hyperbole. The frontal spiral is a simple hyperbolic spiral. The temporal spiral is of the lituus type. The axes of these lines converge in a frontal plane on the epiphysis. The axis of the parietal hyperbole on a projection of the profile passes through the epiphysis and is followed by the parietal artery. Central cranio-encephalic formations follow the same spiral path. The contour of the upper edge of the cerebellum is a lituus spiral. The outline of the lower part of the cerebellum is a simple hyperbolic spiral. The right side of the polar origins of a spiral plotted in the plane of the insula coincides with the right side of the opercula. It can always be plotted, in theory, and forms an angle of 22 degrees 30' with the right side of the median frontal spiral. It cuts the axis of the parietal hyperbole at the apex of the insular triange. The bissector of the angle formed by the two right sides of the polar origins bissects the axis of the parietal hyperbole at a point corresponding to the epiphysis. The temporal hyperbolic lituus spiral has its focal point under the anterior, clinoid, at the junction of the segments CII and CIII of the carotid siphon the curve of which follows the convolutions of the temporal spiral. The right side of the polar origins of this curve indicates the mean direction of the posterior cerebral. The contours of the corpus callosum are homothetic with those of the dome of the skull as far as the axis of the parietal hyperbole. The frontal and parietal curves converge according to four types in the main Pacchionian granulations. The sections of the frontal spiral are often marked by bone abnormalities on the internal table. This analytic test is invariably valid whatever the constants of the spirals or the eccentricities of the hyperboles. Combinations between spirals with different constants and hyperboles of various eccentricities amount to very many types which call for separate study.     

戈塘金矿房柱法开采围岩稳定性分析

戈塘金矿矿体厚度变化较大,地质条件复杂。为科学设计井下采场参数,分析采空区顶板的破坏机理及矿柱的承载机理,指导矿山安全生产,以戈塘金矿为研究对象,设计了采场参数,分析了采场围岩稳定性。通过理论计算,采用房柱法开采时,推荐矿柱尺寸为3 m×3 m,矿房跨度不超过10 m;利用有限元软件Phase2对留设不同宽高比的矿柱时采场围岩的稳定性进行了数值模拟分析。结果显示:矿柱内部出现应力集中,采空区顶底板、岩帮为应力降低区域;随着矿柱宽高比的增大,采空区边界附近的应力水平和位移降低,矿柱内应力集中得到缓解,变形量降低。综合分析认为,矿柱宽高比对采场围岩稳定性有一定影响,保持矿柱宽高比约为0.500,可以较好地维持采场稳定。     

Post-traumatic regeneration of the epithelium of the gastric and intestinal mucous membranes of dogs

The work was devoted to the study of the sources of reparative regeneration of the epithelium of the gastric and intestinal mucosa. A number of surgical interventions on the stomach and intestine of 1 dogs were performed for the solution of this problem. On the basis of the investigations carried out the leading role in the regeneration of the gastric and intestinal mucosa was found to be played by uninjured epithelium surrounding the area of the surgical intervention. This was confirmed by the fact that a mucosa-free intestinal pedicle graft implanted into the defect of the wall of the stomach was covered by gastric mucosa; a stomach graft devoid of own mucosa became covered with intestinal mucosa when displaced in the form of a cylindrical "insertion" into the intestinal tube; mucosa-free stomach pouch became obliterated; this could be reliably attributed to the absence of the main source of regeneration -- uninjured mucosal epithelium along the periphery of the defect. No regeneration of the epithelium of the gastric mucosa from the implanted cells was revealed; this served as an additional confirmation of the fact that regeneration under conditions of the mentioned experiments occurred on account of creeping of epithelial cells surrounding the area of the surgical intervention over the free surface of mucosa.     

铝电解多功能机组工具小车结构优化设计

铝电解多功能工具小车及其中的各项工具是电解铝生产中所必需的核心部分,针对其结构的改进、优化是非常重要的,简单介绍了工具小车及其各项工具的主要功能及结构特点,重点阐述了工具小车各部分结构的改进、优化,包括工具小车运行装置轨道刷及支架、工具小车回转装置的驱动装置、下料装置检修平台、下料装置仓体、下料装置旋转装置、更换阳极装...     

颗粒迁移和离子吸附对粗粒土渗透性的影响试验研究

为了研究颗粒迁移和氨氮离子吸附对粗粒土渗透性的影响,利用渗透仪对3种不同细粒含量的花岗岩全风化粗粒土进行渗透试验.研究3种土样分别在蒸馏水和硫酸铵溶液环境中的渗透系数变化规律.结果表明,在蒸馏水渗透环境中,随着土样中细颗粒含量的增加,颗粒迁移对土样渗透性的影响将有所减弱;在氨氮溶液环境中,氨氮吸附对细颗粒含量更高土样的渗透性影响更为明显;随着渗透时间延长,不同溶液环境中土样的渗透系数趋于一致,表明细颗粒迁移对土样渗透性的影响较氨氮离子吸附更强,但离子吸附对渗透系数降低具有一定的延迟效应.在此基础上,讨论土样在渗透过程中渗透性的演变机理,表明颗粒迁移造成土样下游孔隙堵塞,以及氨氮离子吸附造成颗粒表面水化膜厚度的变化,均是引起土样渗透性变化的主要原因.      

Influence of the somatic region of the cortex on trace inhibitory processes in the posterior lateral nucleus of the thalamus

Acute experiments were conducted on cats under nembutal anesthesia. A study was made of the dynamics of the changes occurring in the curve of restoration of the test response amplitude in the thalamo-cortical fibers to the pared stimulation of the medial lemniscus with various actions on the somatosensory ared. The curve under study served as an indicator of the corticofugal influences on the inhibitory after process in the transmission nucleus of the thalamus. The influences on one somatosensory area of the cortex blocked the transmission of the afferent signals in 70% of the neurons of the transmission nucleus of the thalamus. A correlation between the number of the neurons participating in the reaction and the character of the initial phase of the inhibitory afterprocess was noted.     

Evolution of the epidemic process as a form of solution to its internal contradictions

The author formulated the main contradition of the epidemic process consisting of contradiction between the interaction of the motive forces of the epidemic process, since this contradiction at the same time served as the imperative condition of the origination and as the cause of the subsequent arrest of the spread of infection. The main contradiction of the epidemic process is expressed in reduction of the number and limited activity of the sources of infection, attenuation or arrest of the mechanism of transmission of the causative agents, formation of immunity in the population, the appearance of hereditary resistance in the hosts to the causative agent of the infection. The action of the principal internal contradiction of the epidemic process in the course of evolution conditions genetic variability of the causative agents of the infectious diseases, intensification of the mechanisms of excretion of the parasites from the host organism, and increase of their resistance in the external environment, formation of latent forms of infection.     

Genetic features of the spatial organization of the human cerebral cortex

The within-pair similarity of the topographical maps of the spatial synchronization of the cerebral cortical potentials was studied in 11 pairs of monozygotic twins and 20 genetically unrelated subjects in the resting state and during four types of intellectual activity. It was demonstrated that the degree of similarity of the topographical maps is higher in the resting state in the monozygotic twins than in the genetically unrelated subjects. No frequency band of the EEG which exerts a special influence on the formation of the high degree of similarity of the spatial synchronization of the potentials was found. The maximal similarity in the topographical maps of the monozygotic twins is observed in the anterior regions of the left hemisphere and in the temporoparietal regions of the right. Differences between groups are recorded in both regions; however they are especially distinct in the right hemisphere. The data obtained make it possible to draw an inference regarding the influence of a genetic factor not only on individual components of the EEG (which had been previously demonstrated by a number of authors), but also on the systemic organization of the cortical processes. The right-hemispheric activity apparently relates to the most controllable genetic processes. The results of the analysis of the similarity of topographical maps during various types of activity confirm this: the coefficient of similarity reaches the level of significance in the majority of pairs of monozygotic twins only in a "right-hemispheric" test (simultaneous analysis of nonverbal material).     

Peculiarities of cosmonauts fauces flora]

In the course of the work done the specific and quantitative composition of the streptococcal autoflora of the fauces of the cosmonauts and the members of backup drew was investigated. In populations of isolated microorganisms the non-pathogenic streptococci have dominated among which S. salivarius prevailed. The same species has constantly been isolated in all the cosmonauts, pre- and postflight. Observation of the microflora state of the fauces at different stages of their professional activity made it possible to reveal the peculiarities of an individual dynamics in the number of nonpathogenic streptococci isolated from tampon depending on the participation of the test-subjects in the previous space missions. This is evidently a reflection of the effect of psychoemotional tension on the state of colonization resistance (CR) of the fauces mucosa and, as result of this, on its microflora. In turn, the occurrence of the individual species of conditionally-pathogenic streptococci after the mission points to a decrease in the CR under effect of unfavourable factors of space mission.