Climate Change Adaptation Policy in Ghana: Priorities for the Agriculture Sector

This report is intended to complement the 2011 CCAFS publication “State of Climate Change Adaptation and Mitigation Efforts for Agriculture in Ghana” (Domozoro 2011). It provides relevant updates regarding the policies, projects, or initiatives introduced therein, and an assessment of the evolving political scenario. Specifically, this document presents an objective look at 17 key policy documents within three thematic areas: (1) governance, (2) agriculture, and (3) climate change institutions in Ghana. Several key projects are also included in this analysis given their relevance and status within Ghana’s agricultural adaptation regime. A discussion of the institutional arrangements in each of the thematic areas is provided first, along with a short description of each of the 17 policies and projects. Then, in the following analysis section, objectives and priorities for each of the policies are outlined, together with their evolution over time, intending to identify the temporal shifts in agricultural climate change policy direction in the country. Policy interplay between and within these thematic areas is also addressed. Power and influence dynamics between actors in Ghana’s climate change adaptation regime are discussed in the following section and the results of a Multilevel Stakeholder Influence Mapping (MSIM) exercise are provided. Finally, a discussion of key challenges and recommendations are provided, as identified through semi-structured interviews with actors across the country’s adaptation regime

从供需角度看我国企业年金发展缓慢的原因——基于对厦门、上海等地企业年金现状的调研

目前,我国企业年金制度尚处起步阶段,基于对厦门、上海等地企业年金制度的调研,本文从供给与需求的角度对我国企业年金发展缓慢的原因进行了分析

山西省大同市平旺乡农业保险经营模式的选择

通过调查了解山西大同平旺乡的经济发展水平、特征,概括阐述三大类(六小类)农业保险经营模式及各自的优势和劣势。各种模式中,在近期,因地制宜选择农村合作性质的经营模式,远期则选择趋向商业化的的经营模式

Research of strategic management of Micun coal Based on the attenuation resources meters underground

伴随矿井的不断开采，矿产资源的有限性和不可再生性决定了矿井衰老的必然性，产量走向下滑坡，这对企业甚至社会经济发展的负面影响是不可估量的，衰老矿井其实尚有大量残留资源和围矿可以开采，而制定资源衰减矿井的战略规划是形势所趋，势在必行的。进行矿井合理开采的研究，是为对矿产资源的开发进行参考和指导的，以期实现矿产资源的合理利用和有效开发。论文首先围绕国内外学者关于资源衰减矿井探讨和战略部署等方面的研究内容进行了详细的综述，接着对矿井特征进行分析，进而引出处于衰退期的资源矿井，接着介绍了资源衰减矿井相关理论，提出了衰老矿井资源开发利用的思路，归纳总结出针对资源衰减煤矿规划的要点。主要包括：认识规划重要性...伴随矿井的不断开采,矿产资源的有限性和不可再生性决定了矿井衰老的必然性,产量走向下滑坡,这对企业甚至社会经济发展的负面影响是不可估量的,衰老矿井其实尚有大量残留资源和围矿可以开采,而制定资源衰减矿井的战略规划是形势所趋,势在必行的。进行矿井合理开采的研究,是为对矿产资源的开发进行参考和指导的,以期实现矿产资源的合理利用和有效开发。论文首先围绕国内外学者关于资源衰减矿井探讨和战略部署等方面的研究内容进行了详细的综述,接着对矿井特征进行分析,进而引出处于衰退期的资源矿井,接着介绍了资源衰减矿井相关理论,提出了衰老矿井资源开发利用的思路,归纳总结出针对资源衰减煤矿规划的要点。主要包括：认识规划重要性,加强规划实施的组织领导；加强节能工作,发展循环经济。最后选取了具有代表性的米村煤矿作为研究样本,结合SWOT分析方法对该企业外部环境和内部资源的分析,研究并制定出该企业的发展战略规划。最后本文进一步...学位：工商管理硕士院系专业：管理学院高级经理教育中心（EMBA项目）_高级管理人员工商管理硕士(EMBA)学号：X201115631

Dynamic Analysis of a High-rise-Building Structure during an Earthquake Considering Soil-Structure-Interaction

土－结构体系有限元模拟计算分析的复杂性与计算成本，在一定程度上限制了土与结构相互作用分析在高层建筑结构设计中的应用。上部结构数值解与土解析解耦合的土－结构相互作用计算方法，为高层建筑结构提供了有效途径。利用作者提出的耦合算法，对一个钢框架-混凝土核心筒高层结构进行地震作用下的非线性动力分析,讨论了不同强度地震和不同种类地基土对结构地震反应的影响，得出了对实际工程具有指导性意义的结论。The conventional coupling analysis based on a comprehensive finite-element(FE)model is prohibitive in terms of computational complexity and cost.The coupling method between the numerical modeling of the superstructure and the analytical modeling of the soil provides an efficient approach for SSI.This paper applies this method to a steel-reinforced concrete frame-tube high-rise building and verifies its potential through this case study.Using this method,various soil conditions and earthquake intensities are studied to explore the SSI effects,leading to meaningful conclusions to engineering practice.国家重点研发计划项目(2016YFC0701106)、国家自然科学基金项目(51261120376、5157847

Density Functional Theoretical Study on SERS Chemical Enhancement Mechanism of 4-Mercaptopyridine Adsorbed on Silver

基于密度泛函理论计算和拉曼光谱理论分析,我们研究了对巯基吡啶(4MPY)分子的拉曼光谱和其在银上的表面增强拉曼光谱(SERS),并进一步探讨了S; ERS与界面吸附结构、异构化、质子化和氢键作用以及低能激发态的关系。首先,我们对两种分子异构体的相对稳定性和拉曼光谱进行了理论分析。在此基础上,; 进而研究了该分子与不同银簇作用时的拉曼光谱,结果表明,4MPY以巯基硫与银簇作用形成强的Ag-; S键,导致拉曼光谱的线型不依赖于所选银簇的大小。接着我们考虑了吡啶氮端作用的两种情况。(1)当4MPY-银簇复合物同时以吡啶氮与水簇或水合质子簇; 形成氢键时,结果表明吡啶环的部分振动频率随氢键和质子化发生蓝移。(2)当考虑吡啶氮与银簇作用时,吡啶环三角畸变振动发生蓝移。上述情况不仅解释了实; 验观测的振动频率变化,而且表明了化学环境改变对相对拉曼强度的影响。最后,我们计算了当对巯基吡啶分子以单端或双端与银簇作用,在考虑激发光与低能激发; 态的能量匹配时,拉曼光谱强度与低能激发态的关系。计算结果表明,在双端吸附构型下,与吡啶氮成键的银簇受激发产生电荷转移态,不仅导致吡啶环v_(12; )、 v_1和v_(8a)振动的拉曼信号增强,而且选择性地增强吡啶环C-H面内对称弯曲振动v_(9a)的拉曼信号。Surface-enhanced Raman spectroscopy (SERS) is one of the most powerful techniques for obtaining fingerprint information on molecules adsorbed on coinage metal surfaces. Its detection sensitivity has reached the single-molecule level. On the basis of density functional theoretical (DFT) calculations and Raman scattering theory, we investigated the normal Raman spectra of two isomers and surface-enhanced Raman scattering (SERS) spectra of 4-mercaptopyridine (4MPY) adsorbed on silver. The results aided us in uncovering the relationships between normal Raman spectra and SERS spectra and adsorption configuration, tautomerization, protonation, and hydrogen bonding interactions as well as low-lying excited states. First, we compared the relative stability and normal Raman spectra of two isomers of 4MPY in the gas phase and aqueous solution with a solvent model similar to the solvation model of density (SMD). We then studied the Raman spectra of 4MPY interacting with silver clusters. Our results indicate that the Raman spectra were not dependent on the size of the silver clusters, owing to the formation of strong Ag-S bonds. We also considered two cases of N-end interaction in the 4MPY-Ag-5 complex. (1) For the hydrogen bond interaction between the nitrogen in 4MPY and water clusters or hydrated proton clusters, the theoretical results indicated that the vibrational frequencies of the pyridine ring increase. (2) For the interaction of the 4MPY-Ag-5 complex with a silver cluster Ag-4 through the lone-paired orbital in nitrogen of the pyridine ring, the theoretical results further revealed that the vibrational frequency shift is in good agreement with SERS peaks reported in the literature. Finally, our calculated results focused on the relationship between the Raman spectra and the charge transfer mechanism when the excitation photonic energy matches the transition energy of low-lying excited states in single-end and double-end adsorption configuration. Particularly for the case of the double-end adsorption configuration, the charge transfer states from the excitation from the silver cluster binding to the pyridine ring not only enhance the Raman signals of v(12), v(1), and v(8a) modes, but also selectively enhance the Raman signal of the v(9a) mode associated with the symmetric C-H in-plane bending vibration.国家自然科学基金（21273182,21533006,21373172）资助项

数字PCR 和血培养检测儿童MRSA 血流感染应用价值比较

【目的】比较数字PCR 法和血培养法在检测儿童耐甲氧西林金黄色葡萄球菌血流感染中的应用效果。【方法】收集2017 年10 月到2019 年9 月在我院住院患儿的血液，同步进行数字PCR 方法检测和血培养法检测患儿的耐甲氧西林金黄色葡萄球菌感染情况。统计学分析采用SPSS18.0  软件统计分析。【结果】收集到246   例患儿血液标本，检测为耐甲氧西林金黄色葡萄球菌感染阳性的69 份，其中血培养和数字PCR 均为阳性的53 份，仅PCR 阳性的11 份，仅血培养阳性的5 份，血培养和数字PCR 均阴性的177 份。数字PCR 和血培养结果相符合的占93.50%（230/246）；血培养平均阳性培养周期为48h，数字PCR 检测的平均时间为2.5 h；血培养为金标准，数字PCR 的敏感性为91.40%（53/58），特异性为94.15%（177/188），阳性预测值82.81%（53/64），阴性预测值97.25%（177/182）。结果显示数字PCR 的曲线下面积达93%，诊断价值较高，相比血培养法平均耗时需48 h，而数字PCR 法检测时间平均2.5 h，明显比培养法耗时少。【结论】在诊断儿童耐甲氧西林金黄色葡萄球菌血流感染时，数字PCR 法方法简单、快捷、灵敏度高、特异性好，有望提高耐甲氧西林金黄色葡萄球菌感染的快速诊断能力，为早期精准治疗赢取时间

Study on Raman Spectra of Several Conformations of Thiophenol on Gold

用Gaussian 98程序在B3LYP/6-311+G**(C,H,S)水平上计算得到苯硫酚(TP)的一套校正因子,对苯硫酚各频率进行了势能分布(PEDs)分析,并对各振动模式进行了详细的指认.同时,在B3LYP/6-311+G**(C,H,S)/LANL2DZ(Au)水平上优化得到苯硫酚的各种形态与金结合,即C6H5SH-Au,C6H5SAu,C6H5S--Au的平衡构型,且在此基础上得到了C6H5SH-Au,C6H5SAu,C6H5S--Au三种形态的计算拉曼谱图.其中苯硫酚金盐(C6H5SAu)的拉曼谱图与实验得到的苯硫酚在金溶胶中的谱图是一致的,由此很好地证明了TP与金形成苯硫酚金盐.The optimized geometries of the clusters C6H5SH, C6H5SAu, C6H5S--Au and C6H5SHAu were calculated using the B3LYP density functional method with the 6-311+G** basis set for C, S, H and LANL2DZ for gold. All the calculations were carried out with the Gaussian 98 program package. Through PEDs (Potential Energy Distributions) analysis, comprehensive frequency assignments of thiophenol were performed and the scaling factors of the thiophenol were found. The calculated Raman spectra of several conformations of the thiophenol adsorbed on gold were obtained. The calculated Raman spectrum of C6H5SAu is in good agreement with the experimental one. Therefore, C6H5SAu is the conformation which is closest to the reality.国家自然科学基金(Nos.20273045,20373046);; 厦门大学固体表面物理化学国家重点实验室开放课题资助项目

提高CO_2加氢合成甲醇选择性和收率的一种方法

提高CO2加氢合成甲醇选择性和收率的一种方法李基涛张伟德付金印古萍英（厦门大学化学系物理化学研究所361005）区泽棠（香港浸会大学化学系九龙塘）关键词CO2加氢合成甲醇CO的作用提高选择性和收率随着工业发展和人类利用石化能源的增加，大气中CO2浓度...香港浸会大学科研基金;厦门大学固体表面物理化学国家重点实验