型

There is still no consensus on the expression of the two isoforms in the human prostate and their cellular locations are also controversial. It is not known to which extent each of these isozymes contributes to overall enzyme activity in different prostatic tissues. In an attempt to elucidate which isoform of the 5α-reductases is responsible for the metabolism of T in normal and diseased human prostate, we performed qualitative and semi-quantitative studies of both enzymes in normal, benign hyperplastic and adenocarcinomatous human prostate tissues by RT-PCR and Immunohistochemistry methods.

现已成功地克隆出编码Ⅰ型及Ⅱ型5α-还原酶的基因，关于这两型5α-还原酶在前列腺组织及不同类型细胞中的存在、分布情况及其对组织中睾酮代谢各自所起的作用仍存在许多争议，为此我们应用RT-PCR及免疫组化方法对国人正常、良性增生以及前列腺癌组织中两型5α-还原酶的表达进行了定性和半定量研究。

The content of mineral elements in ripe fruits of M.sieversii from 78 seedings at Mohe Town,Gongliu Country were analyzed using Atomic Absorption Spectrophotometer.The results indicated that M.sieversii seedings presented considerable genetic variations in content of mineral elements with the range of variation coefficients from 24.2% to 54.0%.So it has large potential for further selection.Four elite seedlings were selected,namely large fruit type,high Ca content type,high Zn content type and high damascenone content.As the predominant component of Ily wild fruit tree forest,Malus sieversii had occupied an area of 9300ha.But the inherent reproduction system of M.sieversii and genetic diversity of the species were destructed in different degrees,as a result of farming assart,over grazing and damage by Agrilus mali.

上述结果支持&新疆野苹果可能是栽培苹果祖先种&的结论；②对巩留县莫舍乡的新疆野苹果78个实生株系果肉组织Ca、Mg、Fe、Zn、Cu、Mn6种矿质营养元素进行测定的结果表明，每种矿质元素含量单株间差异显著，变异系数在24.2％～54.0％，遗传多样性丰富，进一步选择的潜力很大；③根据新疆野苹果果实形态、香味物质和矿质元素含量等的测定结果，初步筛选出了大果型、高钙型、高锌型和大马酮型等4个特异性状单株；④调查发现，由于农田开垦、过度放牧以及苹果小吉丁虫的蔓延危害，目前伊犁野果林面积逐年减少，野苹果固有的繁育体系和遗传多样性受到不同程度的破坏。

As burning temperature heighten,the polymorph of alite in the common clinker translated from MⅠ pattern to the mixture of MⅠand MⅢ patterns. And the polymorph of alite in the doping clinker translated from MⅠ pattern to the mixture of MⅠand R patterns.

随煅烧温度升高，不掺杂熟料中阿利特晶型从MⅠ转变为MⅠ和MⅢ型的混合体；掺杂熟料中阿利特晶型从MⅠ转变为M和R型混合体。

objective to evaluate the role of mr perfusion weighted imaging in preoperation diagnosis of meningiomas.methods mr perfusion weighted images was performed in 47 patients with meningiomas followed by conventional imaging.results the mean rcbv values of angioblastic was the highest in the parenchyma of tumor.the mean rcbv values of malignant group was the lowest.the biggest mean rcbv values among different type meningiomas was statistically significant.the biggest mean rcbv values between benign and malignant group meningiomas was statistically significant,but not in the peri-tumor edema.conclusion the rcbv values were useful in the preoperative differentiation diagnosis of different types of meningiomas.those in the peri-tumor edema were useless in the preoperative differentiation diagnosis of different types of meningiomas.

目的 探讨磁共振灌注成像技术对脑膜瘤术前分型及良恶性鉴别的临床应用价值。方法对47例脑膜瘤病人行mr灌注成像检查，对5种亚型的良性脑膜瘤的mr灌注成像进行分析，并与非典型性及恶性脑膜瘤进行比较。结果血管瘤型脑膜瘤实质部分的rcbv值均数最高，恶性组脑膜瘤的rcbv值均数最低。各亚型间瘤体实质最大rcbv值均数间差异有统计学意义(p＜0.05)，良恶性脑膜瘤实质部分最大rcbv值均数间差异有统计学意义(p＜0.05)。瘤周水肿区的rcbv值均数间差异无统计学意义(p＞0.05)。结论 rcbv值对脑膜瘤术前分型及良恶性鉴别有所帮助，而瘤周水肿区的rcbv值对脑膜瘤分型及良恶性鉴别未显示临床实用价值。

The diurnal variation curves of Pn among different types of pear cultivars are different, and there are two types, single-apex curve and anisomerous double-apex curve.

不同类型梨品种叶片Pn日变化曲线不同，有单峰型和不对称双峰型两类，新鸭梨及黄冠Pn曲线呈单峰型，清香、红巴梨和库尔勒香梨的Pn日变化曲线为双峰型

Results It was found that the content of high-mannose type/hybrid type N-glycans and tri-/tetra- antennary complex type N-glycans were decreased, while biantennary complex type N-glycan was increased on SMMC 7721 cell surface by ATRA or db-cAMP treatment.

结果 ATRA和db-cAMP均使SMMC 7721细胞表面高甘露糖型/杂合型和三/四天线复杂型N-糖链减少而二天线复杂型N-糖链增多。

Velocity field inside of arciform greenhouse , fastigium greenhouse , parabola greenhouse and slanting crest greenhouse have been studied by numerical simulation of 3D turbulent flow.

本文对拱型、屋脊型、抛物型、斜顶型大棚这四种断面型式的大棚采用上述紊流模型，对其内部流场的流动进行了数值模拟。

Three groups discriminated by life style are Taiwan Buffalo, pangolin and Dolphin. Three groups discriminated by risk attitude are Risk averter, Risk balancer and Risk lover.

以生活型态区隔市场，得到台湾水牛、穿山甲及海豚族三族群；以风险态度区隔市场，得到风险趋避型、平衡型及爱好型三族群。

The cancer cells are in different differentiation periods: the chromatin of the young cancer cell's nucleus is rich in color and its cytoplasm is basophilous. The young cancer cells don't form into typical glandular cavity; The mature cancer cell is columnar or cubical and its nucleus is located at the base of the cell in gland tube-like arrangement; The decrepit cancer cell stain thin while its nucleus stain dense. The severer's nucleus disintegrate into small fragments. The decrepit cancer cell's arrangement is disorganized, only keeping its glandular shape.

显微镜下癌细胞呈现不同的分化程度：幼稚型癌细胞胞核染色质丰富，胞质嗜碱性，不形成典型腺腔；成熟型癌细胞呈柱状或立方状，细胞核位于细胞基部，呈腺管样排列；衰老型癌细胞胞桨染色变淡，胞核浓染，严重者胞核碎裂成细小碎片，衰老型癌细胞排列紊乱，仅保留腺体样结构轮廓。

In addition ,nine new O,O-dialkyl-[α-(1,3,4,6-tetraacetyl-2-deoxy-β-D-glucoamino)-p-methyl benzlidene] phosphonatesand eight O,O-dialkyl-α-(2-deoxy-D-glucoamino)-p-methyl benzylidene phosphonates were prepared. The 〓 and〓 spectra of Ⅰ-Ⅴ compounds indicated clearly that each of Ⅰ-Ⅴ compounds contains two diastereo-isomers.

我们对非对映异构体的分离方法进行了研究，并分离得到了五个单一构型的异构体〓、〓、〓、〓和〓，培养出了〓、〓和〓三个异构体的单晶，通过X-射线衍射分析，确定了〓、〓和〓三个异构体的绝对构型，反应过程中引入的手性原子的构型均为R构型。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。