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In this thesis, the heterojunction with intrinsic hydrogenated amorphous silicon thin layer ( heterojunction with intrinsic thin layer: HIT) solar cells are investigated. The solar cell structure of p/i/n are fabricated. The substrate is a typical 4-inch n-type wafer with (100) crystal orientation, 1~10 ohm-cm and about 525 μm thickness. The p and i a-Si:H layers are deposited by a 13.56 MHz plasma enhanced chemical vapor deposition. The i a-Si:H layers are especially deposited by pulse-wave modulation plasma technique with fixed plasma turn-off time toff = 10 ms and changed plasma turn-on time ton= 10 to 40 ms to selectively control the different silicon to hydrogen bonding configurations. The effect of various Si:H bonds on the performance of HIT solar cells are explored.

中文摘要本论文针对异质接面薄本质层(heterojunction with intrinsic thin layer: HIT)太阳电池进行研究,采用一般典型四英吋晶向为(100,厚度约为525 μm,电阻率约为 1~10 ohm-cmn型矽晶圆为基板,制作p/i/n太阳电池,p及i层薄膜以13.56 MHz电浆加强化学气相沈积,i层并采用脉波调变电浆技术,在固定电浆关闭时间toff = 10 ms及改变电浆开启时间由ton = 10 ms 至40 ms条件下制作具有不同矽氢键结微结构的氢化非晶矽薄膜以探讨不同矽氢键结对太阳电池性能的影响。

Efficient detector generation algorithm is the kernel of anomaly detection. Aiming at low true positive value, unhandy matching threshold value and large detector set size of existent algorithms, a novel detector generation algorithm based on multiple populations genetic algorithm is put forward in this paper. According to morphologic analysis of intrusion detection system and covering problem principle, self set is divided into several partitions on the basis of their characters.

摘要有效的检测器生成算法是异常检测的核心问题,针对现有算法存在检测率低、匹配阈值固定、检测器集合庞大等问题,本文提出了基于多种群遗传算法的检测器生成算法,根据形态学空间的分析和覆盖问题原理,自体集根据特征进行划分,各个种群根据划分独立按遗传算法进化,最后求得所有检测器种群的并集得到成熟的检测器。

Moreover, laser velocimeter not only has the advantage of larger effective working area, but also has the capability to use the technology of pointing emission to keep tracking of a certain object in corwded heavy traffic with higher precision.

激光测速仪不仅具有更大的有效工作范围,而且它利用点射技术,能够在拥挤的车流之中固定跟踪某一个目标,精确率更高。

Another popular method of controlling costs is for HMOs to give a provider group a fixed payment per patient, or capitated rate, that is independent of utilization of services.

另一种常见的方法来控制成本是外包给一组提供一个固定金额为每名患者或断头率,即独立的服务利用率。

Compared with free cells, the immobilization not only enhanced the ability to decolorize dye but also kept the stable rate of decolorization in diferent pH values.

与游离态菌相比,固定化不仅提高了细菌降解染料的能力,而且在一定的pH值变化范围内,仍能保持稳定的脱色率。

In addition, the density of composite matrix could be controlled by altering the densifier addition to match the requirement of varying fluid velocity and expansion factor in expanded bed.

复合层析基质的柱层析行为表明:大孔型基质的洗脱峰形明显改善,柱压小,适合于高流速的固定床和扩张床层析;扩张床内可形成稳定的分级分布,符合扩张床吸附要求;可根据具体需要,调节碳化钨添加比例来优化操作流速和床层扩张率。

Some methods aiming at the two problems have been researched. First, the optimal number of ATE site can be calculated based on a cost model of DAT-ATE. Second, the problem of test schedule which is equitant with two-dimensional Bin-Packing problem is presented. Then a TCG denotation satisfied with T-admissible rule is more convenient for combinational optimization. With Simulated annealing algorithm, better test scheduling results can be achieved; but there is no great optimization space because the efficiency of scheduling is greater than 90%. Third, A novel test compression method——Multi-capture testing is proposed to compress the stimuli. And the ATPG results show that MC achieves high compression ratio which is greater than 90% in some large-scale circuits. MISR, widely used in LBIST, is employed to compress the responses. The aliasing analysis demonstrates that the fault coverage reduction is little due to the existence of aliasing. Fourth, an improved TIC (called S-TIC) aiming at structured test is proposed based on ARM's TIC. A MC scheduling algorithm is proposed to compute the SoC test time and combine MC vectors to SoC test vectors. The scheduling results shows that test time is greatly reduced when using the proper scheduling priority.

首先,给出了低成本ATE的成本模型,根据此模型得到最低测试成本时系统级测试调度的基本参数——测试Site数;其次,本文将DAT-Scan方式的SoC测试调度等价为两维BP问题,为有效地求解该问题,将该BP问题表示为TCG图并通过模拟退火算法解决其求解过于复杂的问题,调度的结果表明该方法在测试时间上有一定改善,并指出DAT-Scan测试调度效率已经大于90%,进一步优化的空间较小;第三,本文尝试通过测试压缩来解决激励所需的测试带宽,提出了Multi-capture结构并解决了MC测试过程中的&矢量&退化问题,MC测试的ATPG结果表明其测试压缩率很高(大电路接近90%);第四,在激励获得很高压缩比的情况下,测试响应也需压缩,本文采用LBIST中常用的MISR作为MC测试的响应压缩电路,理论分析和实验结果都证明了MC测试的别名对故障覆盖率影响较小(小于2%),并对两类别名的成因做了具体分析;第五,在MC测试及其响应压缩的基础上,本文改进了ARM公司的测试控制器TIC使之适合于MC测试,为了解决MC测试矢量合成问题,本文抽取了MC测试模型,通过固定优先级的MC测试调度模拟将MC矢量合成为ATE矢量,并模拟出了总的MC测试时间。

The catalysis effect of carbide lime , which is a residue in the ethyne production and has a good sulfur-retention property, on pulverized coal combustion has been studied on a thermogravimetric analyzer.

用热重法研究了不同条件下电石渣的催化煤燃烧特性,发现电石渣对晋城煤的着火温度和固定碳燃尽率都具有一定的促进作用,而且随添加量的增加助燃作用增强。

The hydrogenation and methyl esterification of furoic acid over Pd-Ni/γ-Al2O3 catalysts was investigated in fixed bed micro-reactor under different conditions such as reaction temperature,pressure,H2 space velocity,space velocity of furoic acid and methol,ratio of H2 and furoic acid and so on.

以糠酸、甲醇、氢气为原料,采用连续流动固定床微反应器,Pd-Ni/γ-Al2O3为催化剂,使糠酸一步加氢甲酯化生成α-四氢糠酸甲酯。研究了反应的温度,压力,气、液体流速,进料流量等因素对催化反应的影响。结果表明:在1.5MPa,250℃,氢气空速3300 h-1,液体空速3.0 h-1(氢油比为50)时,糠酸转化率为96.6%,四氢糠酸甲酯的选择性97.2.0%,产率94.0%。催化剂稳定性较好,连续运转280小时后未见活性下降。该反应体系活性高,选择性好,反应压力低,催化剂性能稳定,操作简单,产物易分离

After immobilization, the biodegradation effect of UBD microorganism was improved significantly; the removal rate of COD and hydrocarbons was 75% and 90%, respectively, which was better than that of dissociative UBD microorganism and germfree cells.

菌种固定化后明显改善了炼油污水的处理效果,COD和石油类的去除率均高于游离菌和无菌小球。

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The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了,排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意,我建议我们在价格上大家各让一半。

After an hour and no pup, look for continued contractions and arching of the back with no pup as a sign of trouble.

一个小时后,并没有任何的PUP ,寻找继续收缩和拱的背面没有任何的PUP作为一个注册的麻烦。