摘要：为了使生物学类研究生具备系统完整的科研思维和实验技能,以及创新意识和创新精神,以西南大学原生物技术中心为平台,进行研究生实验室轮转训练模式的改革探索与实践。改革教学实践1年后,对38名研究生进行问卷式调查,从学生的基本情况、学生的需求、学生的认可、轮转训练效果和学生的意见反馈等方面,分析了实施研究生实验室轮转训练模式的必要性、优势和弊端。结果显示,在生物学类研究生培养模式中引入新型的实验室轮转训练初见成效,学生比较认可在开展研究生设计前进行的不同实验室之间及不同导师指导下的专项学习模式,其中94.73%的被调查学生认为有必要开设实验室轮转训练,有68.42%、55.26%学生的综合知识和专业知识分别得到了提高,与此同时,学生的实验技能及专业技能也得到了不同程度提升,为研究生课题的选择和设计,科研创新能力及综合素质的培养打下了坚实基础。

摘要：Sintering inhibition of a catalyst at high temperatures is a challenge during heterogeneous catalysis. In this paper, we report that hexagonal boron nitride(h-BN) is an optimal material for anti-sintering γ-Al_(2)O_(3)-supported Pt nanoparticles(NPs) originating from the high thermal conductivity of h-BN. The high thermal conductivity of h-BN ensures maximal heat dissipation from Pt NPs to γ-Al_(2)O_(3),thereby causing both Ostwald ripening and particle coalescence of Pt NPs to be decelerated at elevated *** of Pt NP sintering is also shown in the reducible TiO^(2-)supported Pt NPs with the help of h-BN. The proposed anti-sintering strategy using thermal management is universal, providing new insight into the design of anti-sintering materials and structures for a wide range of applications in heterogeneous catalysis.

摘要：该研究旨在评估LNG(液化天然气)冷能利用IDC机房项目研究方案。研究发现,IDC机房行业的快速增长和对节能环保方案的需求,为LNG冷能利用项目提供了潜在市场机会。技术评估表明,LNG冷却系统成熟且效率高,能有效降低IDC机房的能源消耗。在供应链调研中,当地LNG供应稳定可靠,需求量大且稳定,投产后能带来长期持续的收益,且有助于节能环保和IDC机房行业可持续发展。

摘要：Soil phosphomonoesterase plays a critical role in controlling phosphorus(P) cycling for crop nutrition,especially in P-deficient soils.A 6-year field experiment was conducted to evaluate soil phosphomonoesterase activities,kinetics and thermodynamics during rice growth stages after consistent swine manure application,to understand the impacts of swine manure amendment rates on soil chemical and enzymatic properties,and to investigate the correlations between soil enzymatic and chemical *** experiment was set out in a randomized complete block design with three replicates and five treatments including three swine manure rates(26,39,and 52 kg P ha^(-1),representing low,middle,and high application rates,respectively) and two controls(no-fertilizer and superphosphate at 26 kg P ha^(-1)).The results indicated that the grain yield and soil chemical properties were significantly improved with the application of P-based swine manure from 0 to 39 kg P ha^(-1);however,the differences between the 39(M_(39)) and 52 kg P ha^(-1) treatments(M_(52)) were not *** enzymatic property analysis indicated that acid phosphomonoesterase was the predominant phosphomonoesterase in the tested *** M_(39) and M_(52) treatments had relatively high initial velocity(V_0),maximal velocity(V_(max)),and activation grade(lgN_a) but low Michaelis constant(K_m),temperature coefficient(Q_(10)),activation energy(E_a),and activation enthalpy(ΔH),implying that the M_(39) and M_(52) treatments could stimulate the enzyme-catalyzed reactions more easily than all other *** correlation analysis showed that the distribution of soil phosphomonoesterase activities mainly followed the distributions of total C and total *** on these results,39 kg P ha^(-1) could be recommended as the most appropriate rate of swine manure amendment.

摘要：采用中心复合设计优化了影响多孔型核壳复合颗粒(PCPs)直接压片(DC)性能的配方参数。分别以PVP和NH4HCO3作为壳层材料和制孔剂,选择共喷雾干燥为制备工艺。以PCPs的产率、流动性、压缩性和崩解时间作为响应值。结果表明,NH4HCO3和PVPK30的最佳配比分别为4.76%和9.42%。产率、流动性、压缩性和崩解时间的测定值分别为62.00%、38.50°、4.02 MPa和14.33 min。预测误差分别为2.99%、1.09%、5.70%和2.28%。在本研究中,最优的PCPs与四种DC辅料混合用于连续DC。结果表明,优化后的PCPs具有优良的直压性能和适用性,为其他中药制备PCPs及实现DC提供思路和理论支持。

摘要：This paper presents an embedded SRAM design for write buffer applications in flash *** write buffer is implemented with a newly proposed self-adaptive timing control circuit,an area-saving sense-latch circuit and 6 T SRAM cell units.A 2 kb SRAM macro with the area of 135μm×180μm is implemented in and applied to a 128 Mb NOR flash memory with the SMIC 65 nm NOR flash memory *** simulation and chip test results show that the SRAM write buffer is beneficial to high-density flash memory design.

摘要：针对传统去雾算法在配对数据集上训练时产生过拟合的问题,基于密度和深度分解的非配对图像去雾网络模型,改进了自增强缩放网络。引入Transformer机制,将其与深度卷积神经网络模块深度融合,提出了一种使用未配对数据集训练的基于循环生成对抗网络和Transformer的CT-Nets图像去雾算法;提取输入图像的深度信息和散射系数特征值,利用大气散射模型尽可能恢复不同场景下真实雾的浓度信息,以提高去雾图像主观视觉质量;基于Swin-Transformer设计自增强精化层,以获得精细的细粒度信息,提高模型泛化能力和最终预测图像真实性。实验结果表明,相较于基于密度和深度分解的非配对图像去雾网络模型,CT-Nets图像去雾算法的峰值信噪比和结构相似性分别提升4%和4.1%。

摘要：Studies on beam optics and the isocenter property in the gantry system for the SC200(Superconducting Isochronous Cyclotron of 200 Me V in Hefei,China) are presented in this *** physical design of the isocentric gantry system is developed with the software TRANSPORT,which realizes a beam with a circular shape at the isocenter and a full width at half maximum of4–10 *** stereotactic radiosurgery,the isocenter deviation of the gantry system should be less than 1 mm in *** order to explore the property of the isocenter,an electromagnetic structure coupling analysis has been conducted given the self-gravity and the electromagnetic(EM) force of the magnets on the gantry beam *** correlation between the isocenter property and the EM force has also been carefully *** paper puts forward two methods to obtain the isocenter deviation based on the characteristics of the nozzle installation structure and the calculation of the optical path after the nozzle,*** results show that the maximum isocenter deviation is less than 0.33 mm with a safety factor of 1.5,and the deviation caused by the EM force is 0.05 *** latter result indicates that the impact of the EM force is *** paper puts forward one possible way to realize real-time acquisition of the isocenter deviation in practical *** gantry of SC200 is under construction at ASIPP.

摘要：以滇黄精种子为试验材料,采用TTC法测定生活力,分别通过正交试验和响应面法对染色温度、染色时间和TTC浓度进行优化。结果显示,正交设计试验最佳测试条件为TTC浓度0.5%、染色温度35℃、染色时间24 h;响应面法试验优化后结果与正交试验一致,利用响应面法优化TTC法测定滇黄精种子生活力的方法可行。

摘要：本文研究了桔小实蝇Bactrocera dorsalis气味结合蛋白BdorOBP2对甲基丁香酚(ME)及其结构类似物的结合特性,以期为基于蛋白结构的新型引诱剂的分子设计提供靶标蛋白。本研究扩增获得气味结合蛋白BdorOBP2基因并进行序列分析。三维结构预测显示,BdorOBP2具有6个α螺旋,同时含有6个保守的半胱氨酸残基。荧光定量结果表明BdorOBP2在雌雄虫触角中的表达水平最高,同时在足、翅等组织中表现出性别差异表达特性,推测BdorOBP2具有识别性信息素和寄主挥发物的双重作用。在对BdorOBP2蛋白表达和纯化的基础上,采用荧光竞争结合试验分析了BdorOBP2与甲基丁香酚及其类似物的结合能力,结果显示BdorOBP2蛋白对丁香酚、异丁香酚、甲基丁香酚、异丁香酚甲醚等4种化合物的结合能力相当。BdorOBP2在感受寄主挥发物及性信息素过程中挥发重要作用,为基于靶标蛋白的新型行为调控剂的分子设计提供了重要参考。