Monthly sea surface temperature records reconstructed by δ<Superscript>18</Superscript>O of reef-building coral in the east of Hainan Island,South China Sea

Stable oxygen isotopic compositions of a coral colony ofPorites lutea obtained on a core allowed the reconstruction of a 56-a (1943–1998) proxy record of the sea surface temperatures. This coral δ¹⁸O data are from the east of Hainan Island water (22°20’N, 110°39’E), South China Sea. The relationship between δ¹⁸O in the skeletal aragonite carbonate and the sea surface temperature (SST) is SST = -5.36 δ¹⁸O_PDB-3.51 (r = 0.73,n = 470), dδ¹⁸O/d(SST) = -0.187?/ °C; and the thermometer was set at monthly resolution. The 56-a (1943–1998) proxy record of the sea surface temperatures reflected the same change trend in the northern part of South China Sea as the air temperature change trend in China.     

A note on Littlewood-Paley inequality for arbitrary intervals in\mathbb{R}^{n*}

Using the extension of Journé's covering lemma to higher dimensional spaces due to J. Pipher and our observation, we present a simple proof of the boundedness of the Littlewood-Paley operator Δ in for 2≤p<∞ and n≥3. The project Supported by NSFC.     

CdSxSe1-x半导体微晶掺杂玻璃在抗共振环APM激光器中不能压窄脉

本文对具有较大非线性系数,较快非线性响应和回复时间的CdS_xSe_1-x半导体微晶掺杂玻璃能否在挽共振环(亦称为非谐振环)APM激光器中有效地压缩脉宽等问题做了详尽的理论与实验的切耐与分析。理论计算与实验研究的结果均表明:在抗共振环APM激光器中,应用CdS_xSe_1-x半导体微晶掺杂玻璃不能使超短光脉冲宽度被压窄。     

Monthly sea surface temperature records reconstructed by δ18O of reef-building coral in the east of Hainan Island,South China Sea

Stable oxygen isotopic compositions of a coral colony ofPorites lutea obtained on a core allowed the reconstruction of a 56-a (1943–1998) proxy record of the sea surface temperatures. This coral δ¹⁸O data are from the east of Hainan Island water (22°20’N, 110°39’E), South China Sea. The relationship between δ¹⁸O in the skeletal aragonite carbonate and the sea surface temperature (SST) is SST = -5.36 δ¹⁸O_PDB-3.51 (r = 0.73,n = 470), dδ¹⁸O/d(SST) = -0.187‱/ °C; and the thermometer was set at monthly resolution. The 56-a (1943–1998) proxy record of the sea surface temperatures reflected the same change trend in the northern part of South China Sea as the air temperature change trend in China.

     

Optical absorption property of glasses coloured with Cd (S, Se, Te)

In the glasses coloured with Cd (S, Se, Te), the dependence of the absorption coefficient () on photon energy (E) and temperature (T) has been determined. Some results that differ from the Urbach rule were obtained.     

芯片制造中的化学镀技术研究进展

芯片制造中大量使用物理气相沉积、化学气相沉积、电镀、热压键合等技术来实现芯片导电互连. 与这些技术相比, 化学镀因具有均镀保形能力强、工艺条件温和、设备成本低、操作简单等优点, 被人们期望应用于芯片制造中, 从而在近年来得到大量的研究. 本综述首先简介了芯片制造中导电互连包括芯片内互连、芯片3D封装硅通孔(TSV)、重布线层、凸点、键合、封装载板孔金属化等制程中传统制造技术与化学镀技术的对比, 说明了化学镀用于芯片制造中的优势; 然后总结了芯片化学镀的原理与种类、接枝与活化前处理方法和关键材料; 并详细介绍了芯片内互连和TSV互连化学镀阻挡层、种子层、互连孔填充、化学镀凸点、再布线层、封装载板孔互连种子层以及凸点间键合的研究进展; 且讨论了化学镀液组成及作用, 超级化学镀填孔添加剂及机理等. 最后对化学镀技术未来应用于新一代芯片制造中进行了展望.     

1.09万m^3蛋形壳体结构无粘结预应力张拉分析

本文通过对杭州市四堡污水处理石蛋形消化池无粘结预应力张拉对混凝土结构影响的试验研究,测定了张拉应力的影响范围,分析了预应力张拉工艺,比较了规范与施工相近有关系数的取值,提出了供设计、施工参考采用的控制张拉力和张拉工艺等。     

Comparative analysis of salt‐responsive phosphoproteins in maize leaves using Ti4+‐IMAC enrichment and ESI‐Q‐TOF MS

Salinity is one of the most common abiotic stresses encountered by plants. Reversible protein phosphorylation is involved in plant defense processes against salinity stress. Here, we performed global phosphopeptide mapping through enrichment by our synthesized PVA‐phosphate‐Ti⁴⁺ IMAC coupled with subsequent identification by ESI‐Q‐TOF MS. A total of 104 peptide sequences containing 139 phosphorylation sites were determined from 70 phosphoproteins of the control leaves. In contrast, 124 phosphopeptides containing 143 phosphorylated sites from 92 phosphoproteins were identified in salt‐stressed maize leaves. Compared with the control, 47 proteins were phosphorylated, 25 were dephosphorylated, and 45 overlapped. Among the 72 differential phosphoproteins, 35 were known salt stress response proteins and the rest had not been reported in the literature. To dissect the differential phosphorylation, gene ontology annotations were retrieved for the differential phosphoproteins. The results revealed that cell signaling pathway members such as calmodulin and 14‐3‐3 proteins were regulated in response to 24‐h salt stress. Multiple putative salt‐responsive phosphoproteins seem to be involved in the regulation of photosynthesis‐related processes. These results may help to understand the salt‐inducible phosphorylation processes of maize leaves.     

碱金属卤化物键长、德拜温度和热膨胀系数的温度效应

以碱金属卤化物为研究对象,根据局域键平均近似方法,从热膨胀系数的定义出发,建立热膨胀系数和键长的温度效应函数表达式。定量获取碱金属卤化物的键长、刚性因子、德拜温度和热膨胀系数。结果表明：①碱金属卤化物的热膨胀系数与结合能成反比;②同类碱金属卤化物中,从氟碱化物到碘碱化物德拜温度逐渐减小而热膨胀系数逐渐增大;③碱金属卤化物的键长在其德拜温度的三分之一处,由非线性转变为线性热伸长。