This would indicate that a substantial proportion of all farmers in the region do not have access to potash.
如表3所示。在低产区44名被采访的农民中，25名没使用K肥，这可以说明这个地区有相当一部分农民得不到钾肥。
By virtue of numerical and analytical method, we got the following results. With the increasing of patch temperature, it is found that (1) the mean open rate of sodium and potassium channels of the HH neuron are decreased, and the mean duration of spikes of membrane potential is also decreased, which are qualitatively consistent with previous experimental results of single ion channel.(2) Under moderate patch size, the mean inter-spike interval of membrane potential first decreases, reach a minimum, and then increases with the increasing of patch temperature.(3) By defining a measure parameterβ, we show that there is a maximal region for the measureβin the patch temperature and patch size parameter plane where the coherence resonance phenomena are very remarkable, and the characteristic time of the output also confirm our result.
其次，在随机的HH模型中，考虑神经元膜上离子通道的随机开关同时受到电压和温度的调控，用数值计算和半理论推导的方法模拟了系统的演化，得到了以下结果：(1)随着温度的增加，HH神经元上的K~+和Na~+通道的平均打开率降低，膜电压脉冲的持续时间也降低，这与单离子通道的实验研究结果定性符合；(2)在膜面积为中等大小时，随着温度的增加，平均脉冲间间隔先降低，达到一个最小值，然后再随温度升高，暗示了存在一个最佳的温度，使系统的输出最有序；(3)通过定义一个相干共振的测量参数β，发现在膜面积和温度的参数平面上，β的取值有一个最大的区域，对应系统的相干共振状态。
The present paper reports the study of the effects of temperature on the absorption cross-sections of ammonia in spectral region of 200-220 nm.
为了研究NH3气体在紫外203～220 nm内吸收截面随温度的变化规律，采用高分辨率光栅单色仪、氘灯光源、闭式气样室和配气装置，测量NH3气体温度由308 K升高至397 K的吸收截面。
The flow was assumed as quasi-steady state and we applied the Multiple Reference Frame to calculate flow field. Rotational frame was use to calculate flow of impeller swept region, and flow surrounding it; stationary frame was use to calculate flow of the rest region that neat the baffle or the wall. The turbulent model used was High Reynolds k-ε model; wall function is used to calculate the flow near the wall. Because of the axial symmetric of the stirred tank, the computational domain was only half of the tank and periodic boundary was used.
假设流场为拟似稳态，应用多重参考座标系，以旋转座标系计算叶片旋转区域及其附近之流场，以静止座标系计算其余靠近壁面及挡板之流场；紊流模式使用高雷诺数之模式，对靠近壁面的流场使用壁函数来处理，由於搅拌槽具备轴对称的特性，故本模拟只取一半的搅拌槽作为计算范围以减少计算量。
The results show a significant difference: the values obtained in Mg I b region are smaller due to the contamination from the broad Fe II emission lines; the velocity dispersion is easily biased by the searching algorithm in Ca II K region because of the weakness of lines; and similar results are derived in Ca II K +Ca II triplet and Ca II K regions.
不同区域结果表明，Mg I b区由于受到铁族发射线影响，拟合的σ值偏低；CaⅡK线区谱线强度很弱，易受限于最小二乘法搜索算法；CaT+CaⅡK联合区得出的速度弥散度和只计算CaT区域的结果相当。
The results showed that the linear expansion rate of high purity quartzite had three different regions at different temperatures, namely, slow-expansion region (room temperature-870℃), halted expansion region (1000-1350℃) in which the linear expansion rate tended to be zero, and fast-expansion region (1400-1550℃) with a sharp wave crest, respectively. These regions were corresponding to the isomer conversion of SiO2. The comparison between two samples with different purities showed that the purity of quartzite particle had a remarkably influence on its melting characteristics.
高纯度石英砂在升温过程（室温～1600℃）中存在3个相对独立的特征温度区间：缓慢膨胀区（室温～870℃），在此区间试样尺寸变化比较均匀，线膨胀速率k比较小；膨胀停滞区(1000~1350℃)内，试样的体积和形状几乎不随温度的升高而改变，k在此区间近于零；快速膨胀区(1400~1550℃)内，k在此区间突然增大，形成一个陡峭的波峰。
The result show that the vegetation of Weibei plateau can conserve 36.45×10^8t soil, whose value is about 2.55×10^8 Yuan with its corresponding conservative measures. While keeping the topsoil, the vegetation also conserves the soil organism and its N, P, K etcetera nutrient materials. After adding each kind of the soil nutrients'for their contents and proportions, it is concluded that each year vegetation within this region can conserve organism for about 457.2×10^4t which equals 1306.29m^3 firewood whose value is 6.53×10^8t Yuan, while with respect to N, P, K, the total weight conserved and its corresponding value are 35.45×10^4t and 3.42×10^8Yuan, 54.49×10^4t and 3.03×10^8Yuan, and 736.62×10^4t and 43.79×10^8Yuan, respectively, according to their current market prices.
结果显示，渭北黄土高原植被每年保持表土36.45×10^8t，按等效应人工保土措施计算，植被保土价值量合2.55×10^8元；植被在保持表土的同时也保持了土壤有机质及N、P、K等土壤养分，按各类土壤养分含量及面积加权计算，每年可保持457.2×10^4t有机质，植被保持有机质量相当于1306.29立方公尺薪材、合6.53×10^8元；每年可保持全氮35.45×10^4t、全磷54.49×10^4t、全钾736.62×10^4t，植被保持的N、P、K按化肥市场价格计算，分别合3.42×10^8元、3.03×10^8元、43.79×10^8元。
Alkali-erosion reaction, mainly from alkali metal kalium, which results form silicate or abnormal silicate as K〓O·SiO〓 or K〓O·2SiO〓, takes place in the region of depth 10 ～20mm in SiC bricks and, at the same time, transfer the above oxidation from passive one into active one. The temperature fluctuation during the blow-in operating and no steady operating of BF makes it possible for the SiC bricks to be damaged by thermal stress, the result of which will cause or accelerate oxidation and alkali-erosion reaction.
理论分析和实验结果一致表明，Si〓N〓结合的SiC质材料的氧化过程遵循抛物线氧化规律，在实际高炉冶炼条件下，其结果表现为保护型氧化；碱蚀反应，主要是钾的侵蚀，发生在砖衬工作面附近10~20mm的深度范围内，其结果形成了K〓O·SiO〓和K〓O·2SiO〓之类的钾的硅酸盐，并促使上述氧化过程向连续型氧化的方向转化；高炉开炉时及不稳定操作期炉墙温度的波动，足以使SiC砖衬产生热震破坏，其结果将诱发和加速氧化和碱蚀反应的进行。
For the determina tion ind us tr ial p ar k in d u s t ry localization, carries on the region cooperation in the resources supporting capacity foundation.
文章分析了西北地区发展工业的资源优势、政策优势以及国内产业分工带来的机遇，揭示了规划建设存在的突出问题。
It is shown that the attenuation induced by cloud are taken into account at Ka- at elevation angle smaller than 30°and V-band paths. The theory and mechanism of backscattering for clouds are analyzed. For the clouds over Xi'an region, the quantity calculations of the backscattering cross sections for various reflection mechanism of cloud are dealt with.
第三，根据西安地区气象观测数据，讨论了西安典型云的宏观和微观物理特性；根据西安典型云的观测结果和世界气象组织提供的数据，得到西安典型云的K-M云滴谱参数；并根据西安地区云的液水含量，计算了地－空路径上云的衰减，结果表明，在V波段和仰角小于30度的Ka波段路径，云的衰减需加以考虑。
Gemmell E, Grieco DA, Yamazaki K, Nakajima T, Seymour GJ Expression of receptor beta-chain variable region by T cells in human periodontal disease.
对牙周病的基因研究已构成了人类认识自身规律的重要一环，在不久的将来一定会起到更重要的作用。
This paper proposed a novel algorithm of color image segmentation, based on clustering and region merging.
提出一种基于K均值聚类与区域合并的彩色图像分割算法。
It is necessary to note that Fujitsu and Epson it is necessary to exert efforts in order to overtake the company ramtron (which he is pioneer in this region and in assortment of which already there is 512- kbits chips).
有必要指出，富士通和爱普生有必要作出努力，以取代该公司ramtron （他是先驱在这一地区，并在各种各样的已经有512 -k bits芯片）。
A hybrid algorithm based on seeded region growing and k-means clustering was proposed to improve image object segmentation result.
提出了一种基于种子区域生长和K-Means聚类的图像分割算法。
By sampling survey and comparative study in lateral and longitudinal dimension combined with personal teaching practice in the region, this article, on the basis of analyzing Lhasa`s general status of K-12 art education, put forward some constructive suggestions for its reform and innovation.
论文采用抽样调查，横向与纵向比较的综合研究方法，辅之以个人实地教学经验，在全面剖析拉萨地区中小学美术教育现状的基础上，对其改革和创新提出了建设性意见。
Based on the constrained motion model and the k step reachable region, the problems associated with target detecting and dynamic coverage are formulated and solved.
基于约束运动模型和k步可达区，给出了目标探测和动态覆盖的问题描述和求解。
Toshikuni K Preparation of plastic optical fiber for near-IR region transmission 10.1002/pola.1987.080250105 Journal of Polymer Science Part A:Polymer Chemistry, 1987, null
储九荣%徐传骧高聚物光纤的研究进展功能高分子学报，1998，(04)储九荣高聚物光纤材料及制备方法化工新型材料，1998，08
The predictors of the model include sunspot area, magnetic class, Machtoish class, solar radio flux, active region location and soft X-ray flux are presented.
中文摘要：应用支持向量机和k近邻相结合的方法，建立了太阳质子事件预报模型。
Besides the XANES measurements, we performed the specific heat and magnetization experiments on Na0.832CoO2 single crystal to investigate the phase diagram. It is found that there are two new phase transitions at T = 8 K or T = 15 K, respectively. The occurrence of the phase transition at T = 15 K and T = 8 K depend on the cooling rate through the temperature region that the mobility of Na ions exists.
另外，我们也对Na0.832CoO2 单晶进行了比热及磁性量测，并且在 T = 8 K 及T = 15 K 处各发现了一个相转变；我们也从数据中发现此15 K 以及8 K 处的相生成是相依於降温速率的，而此相依性的产生则是决定於样品中Na 离子机动性的存在温区。
The thermoinduced coloration system of fluorane/iodonium salt has been investigated. The kinatic studies of thermoinduced color development reaction in polymer film was performed. It was found that two different phenomena appeared in the relationship between reaction rate constant and temperature. A very low value of k〓(0〓mol〓·l·s〓) and very high energy of activation E〓(149 KJ·mol〓) observed in the region of low temperature, whereas a larger value of k〓(1~10 mol〓·1·s〓) and smaller energy of activation (E〓33 KJ·mol〓) displayed in the region of high temperature of 150℃.
研究了荧烷/碘鎓盐热致显色反应体系，进行了分子膜中热生色反应动力学的研究，发现热生色速度常数k〓和温度关系呈现二种不同情况：在低温区，k〓值很小（＜10〓mol·1·s），活化能很大（E〓=149KJ·mol〓）；而在高温区，k〓值较大（1~10〓mol·1·s），活化能较低（E〓=33KJ·mol〓），它们的转折点位于温度（T〓=119℃），表明高于T〓是进行热致显色反应的重要条件；考虑到它们用作热记录介质的可能，研究了熔融状态中热生色反应。