南美奥连特盆地白垩系Napo组Main-M1亚段沉积体系重建及油气勘探意义

厄瓜多尔奥连特盆地是南美安第斯前陆盆地群中最重要的含油气盆地之一,上白垩统Napo组Main-M1亚段是目前勘探开发的主力层位之一,其沉积环境一直存在争议,沉积体系及演化过程尚不明确。本研究基于岩心、测录井等资料,针对Main-M1亚段沉积时期的主要沉积微相类型、沉积体系及演化过程进行了研究。结果表明:研究区位于水动力条件复杂的海陆过渡环境,在东部发育潮汐三角洲,向西部逐渐过渡为浅海陆棚环境;研究区内主要识别出水下分流河道、水下分流河道间、潮汐水道、潮汐沙坝、潮汐沙坪、潮汐水道间等8类沉积微相。根据岩电特征,进一步将Main-M1亚段划分为3个小层。通过分析3个小层的岩性组合演变特征,确定在Main-M1亚段沉积时间内,Auca古隆起逐渐形成,同时挠曲作用导致相对海平面升高,3个小层在垂向上呈水体逐渐变深、潮汐三角洲前缘不断向陆地退缩的形式;基于对Main-M1亚段沉积时期潮汐三角洲—浅海陆棚沉积体系的重建,研究区东部的水下分流河道及前缘沙坝也被认为具有一定的岩性油气藏勘探潜力。

Remote preparation of an entangled two-qubit state with three parties

We present a scheme for probabilistic remote preparation of an entangled two-qubit state with three parties from a sender to either of two receivers. The quantum channel is composed of a paxtially entangled two-qubit state and a partially entangled three-qubit state. We calculate the successful total probabilities of the scheme in general and particular cases, respectively. We also calculate total classical communication cost in a general case and two particular cases, respectively.

Analysis of main factors in partial mining subsidence

The partial mining subsidence is a technical method widely used in the mining under buildings. How to calculate the subsidence caused by the partial mining is the key to use this method. By using the numerical calculation method, the main factors affecting the subsidence caused by the partial mining were analyzed, which include the recovery ratio of the partial mining, the width of the mined strip, the thickness and the depth of the mined seam, the conditions of the overburden. The relationship between the partial mining subsidence and the main factors was given according to the calculated results, which provides a theory basis for design and application of the partial mining.

Elastoplastic pipe-soil interaction analyses of partially-supported jointed water mains

Water distribution networks are essential components of water supply systems. The combination of pipe structural deterioration and mechanics leads to the failure of pipelines. A physical model for estimating the pipe failure must include both the pipe deterioration model and mechanics model. Winkler pipe-soil interaction (WPSI), an analytical mechanics model developed by Rajani and Tesfamariam (2004), takes external and internal loads, temperature changes, loss of bedding support, and the elastoplastic effect of soil into consideration. Based on the WPSI model, a method to evaluate the elastic and plastic areas was proposed in the present study. An FEM model based on pipe-soil interaction (PSI) element was used to verify the analytical model. Sensitivity analyses indicate that the soft soil, long pipe and high temperature induced the axial plastic deformation more likely, which, however, may not occur in normal scenarios. The soft soil, pipes in small diameters, long unsupported bedding are prone to form flexural plastic area. The results show that the pipes subjected to the same loads have smaller stresses in the elastoplastic analysis than elastic analysis. The difference, however, is slight.

南美奥连特盆地坎潘阶碳酸盐岩建隆的识别及科迪勒拉运动早期抬升对Main-M1储集层沉积的控制作用

厄瓜多尔奥连特盆地Main-M1砂岩储集层是该盆地近年来重要的构造-岩性圈闭勘探目的层系,寻找砂体和岩性尖灭带是Main-M1砂岩勘探的关键。该盆地为晚白垩世弧后热沉降盆地和新生代前陆盆地的叠合盆地,在构造上分为西部逆冲褶皱带、中部前渊带和东部斜坡带,在前渊带发育一系列近N-S走向长轴背斜。综合观察和分析发现,在研究区内长轴背斜上生长了1个碳酸盐岩建隆,地震上具有明显的边界反射形成丘状外观和较连续的弱振幅内部反射,测井上具有厚层、近箱型低GR响应特征。该建隆表明在其沉积的坎潘阶时期,长轴背斜已经开始抬升,将背斜顶部推升至古水面附近,形成建隆局部生长的条件。压实回剥方法恢复古地貌证实,长轴背斜在坎潘阶早期开始发育,构造抬升幅度为7~10 m。由于构造抬升和建隆发育始于Main-M1沉积前,抬升古地貌可影响砂岩沉积。根据背斜上数十口已钻井Main-M1砂体厚度统计,发现背斜顶部砂岩储集层整体较发育,但古建隆顶部砂层厚度减薄或者缺失,在背斜的南部延伸段,构造顶部砂岩缺失,仅在东部侧翼富集。提出了近N-S向背斜古地貌影响Main-M1砂体沉积,使砂岩于富集于构造下倾方向的控砂模式。该模式可形成上倾尖灭型构造-岩性圈闭,从而提供了通过古地貌恢复在奥连特盆地前渊带寻找新圈闭的勘探思路。

WORLD POLITICAL PARTIES HIGHLY APPRAISE THE KEYNOTE SPEECH BY XI JINPING,THE GENERAL SECRETARY OF THE COMMUNIST PARTY OF CHINA CENTRAL COMMITTEE:VIEWS OF INTERNATIONAL COMMUNITY TOWARDS THE CPC IN DIALOGUE WITH WORLD POLITICAL PARTIES HIGH-LEVEL MEETING

During the CPC in Dialogue with World Political Parties High- Level Meeting held in Beijing from Nov. 3o to Dec＂. 3, 2ox7, leaders from nearly 300 parties and political or- ganizations in more than 12o countries and regions gathered together to share the views of the responsibilities of politi- cal parties in building a community of shared future and a better world. The dialogue is not only the first multilat- eral diplomatic event held after the 19th CPC National Congress, but also the first high-level dialogue held by the CPC with the world＇s parties and is of great significance for both the CPC and other parties, with the largest number of attendances ever seen in such an event.

Strengthening Cooperation Among Political Parties to Jointly Pursue the People's Wellbeing

Keynote Address by H.E.Xi Jinping General Secretary of the Central Committee of The Communist Party of China And President of the People’s Republic of China At the CPC and World Political Parties Summit Beijing,6 July 2021 Your Excellencies leaders of political parties,Ladies and Gentlemen,Friends,It gives me great pleasure to join you,leaders of more than 500 political parties,political and other organisations from over 160 countries as well as the ten thousand and more representatives of political parties and various circles。

Review on the Rise of Emerging Political Parties in Africa

Since the beginning of the 21st century,a number of influential new political parties have emerged in many African countries,posing different degrees of impact and challenges to the established party political system,making it an important phenomenon worthy of attention in African party politics in recent years.

JOIN FORCES TO OVERCOME DIFFICULTIES OF THE TIME: FOREIGN POLITICAL PARTIES AND POLITICAL LEADERS SPEAK HIGHLY OF CHINA’S FIGHT AGAINST EPIDEMIC

At the conjunction of years,a sudden outbreak of pneumonia epidemic caused by COVID-19 swept throughout China,and the situation of prevention and control was severe and complex.On January 25,General Secretary Xi Jinping stressed at the meeting of the Standing Committee of the Political Bureau of the CPC Central Committee that the epidemic situation is like an order,and prevention and control are responsibilities.

Radical Right Parties in the Political System of States： Theoretical and Practical Aspects

The article deals with the question of whether far-right parties are able to influence the political and party system in the contemporary state. Far-right parties have acquired special political features that are grounded on a broad variety of far-right ideological norms and political instruments. Far-right parties challenge the state government and policy offering the key （anti-immigration politics） to solve a variety of complicated issues. The main idea of the article is that far-right parties are flexible enough in their political rhetoric and instruments to gain electoral support. Based on different concepts and theories we should underline that far-right parties have a prominent electoral future but their place in the political arena greatly depends on existing conflicts of social and cultural nature in the nation-state.

The Parties That I Would Rather Forget

Do you enjoy Christmas parties?I must admit that at the mo-ment,now that the curtain is rising on the festive season,I lookforward to every social gathering I have been invited to.But I also know that when Christmas is over I shall sink backin front of the‘box’,relieved that it is all over.The last embar-rassment caused by some agonising clanger will be safely tuckedaway in my memory,never to be repeated.

Giving Play to the Leading Role of Political Parties in the Belt and Road Initiative——Sidelights on Asian Political Parties' Special Conference on the Silk Road

The Asian Political Parties’Silk Road Special Conference on the Silk Road,organized by the International Department of the Central Committee of the Communist Party of China(CPC),was held in Beijing from October 14 to 16,2015.Delegates had an open dialogue on the theme'New Vision of the Silk Road,Actions for Common Development'and adopted an outcome document entitled'Bei-

Vanguard Parties and Governance in Africa： Dimensions of Battling for States

Since the demise of colonialism as well as the cold war, Africa has battled to put democratic governments in place. The legacies of these two political and historical landscapes have had a hand in shaping and disfiguring the nascent governments that would be born in Africa with vanguard parties not tolerating opposition. In a bid to stay in leading positions, as founding fathers of revolution, incumbent governments have used different tools, some very unorthodox, from brute force, genocides, governments of national unity and violent elections to stay in power and destroy opposition. This paper seeks to trace how Zimbabwe has fared in establishing a democratic government from Lancaster to the 2013 March referendum. Zimbabwe, following a Lancaster House Agreement C1979）, like Kenya （1960）, held elections in 1980, making R. G. Mugabe the first black Prime Minister and C. Banana the President. Some scholars have argued that the 1980 elections have been the only free and fair elections in Zimbabwe＇s history of elections. To measure the level of democracy in Zimbabwe, the paper shall highlight the euphoria at 1980, read through gukurahundi of 1983, the unity accord of 1987, select parliamentary and presidential elections, the fast track land reform of 2002, the 2009 Government of National Unity as well as the 2013 constitution amendment. The study shall largely make use of desktop and interviews of ordinary Zimbabweans, politicians, and students in universities with regards to matters of governance. The paper concludes that post communist governments have struggled to establish democracy.

Strong shock propagation for the finite-source circular blast in a confined domain

The circular explosion wave produced by the abrupt discharge of gas from a high-temperature heat source serves as a crucial model for addressing explosion phenomena in compressible flow.The reflection of the primary shock and its propagation within a confined domain are studied both theoretically and numerically in this research.Under the assumption of strong shock,the scaling law governing propagation of the main shock is proposed.The dimensionless frequency of reflected shock propagation is associated with the confined distance.The numerical simulation for the circular explosion problem in a confined domain is performed for validation.Under the influence of confinement,the principal shock wave systematically undergoes reflection within the domain until it weakens,leading to the non-monotonic attenuation of kinetic energy in the explosion fireball and periodic oscillations of the fireball volume with a certain frequency.The simulation results indicate that the frequency of kinetic energy attenuation and the volume oscillation of the explosive fireball align consistently with the scaling law.

Reinforcing Friendships Chinese ambassadors to African countries exchange views with political parties in those countries

This year marks the 100th anniversary of the founding of the Communist Party of China (CPC). The CPC has taken the centenary as an opportunity to strengthen dialogue and exchanges with political parties around the world and share experience in governance. Chinese ambassadors to African countries have carried out exchanges and dialogues with political parties of the host countries. Chin Africa has compiled the dialogues and exchanges.The following is an excerpt of the activities.

BRICS POLITICAL PARTIES, THINK TANKS AND CIVIL SOCIETY ORGANIZATIONS TO CEMENT COOPERATION

The BRICS political parties,think tanks and civil society organizations Forum was held in Fuzhou,capital of southeast China’s Fujian Province,June 11-12,2017.The forum drew over 400 participants from BRICS and other developing countries.Heads of political parties,think tanks and civil society organiza-