Literature overview of basic characteristics and flotation laws of flocs

Flocculation flotation is the most efficient method for recovering fine-grained minerals,and its essence lies in flotation and recovery of flocs.Fundamental physical characteristics of flocs are mainly determined by their apparent particle size and structure(density and morphology).Substantial researches have been conducted regarding the effect of floc characteristics on particle settling and water treatment.However,the influence of floc characteristics on flotation has not been widely studied.Based on the floc formation and flocculation flotation,this study reviews the fundamental physical characteristics of flocs from the perspectives of floc particle size and structure,summarizing the interaction between floc particle size and structure.Moreover,it thoroughly discusses the effect of floc particle size and structure on floc floatability,further revealing the influence of floc characteristics on bubble collision and adhesion and elucidating the mechanisms of interaction between flocs and bubbles.Thus,it is observed that floc particle size is not the only factor influencing flocculation flotation.Within the appropriate apparent particle size range,flocs with a compact structure exhibit higher efficiency in bubble collision and adhesion during flotation,thereby resulting in enhanced flotation performance.This study aims to provide a reference for flocculation flotation,targeting the development of more efficient and refined flocculation flotation processes in the future.

Basic characteristics of Australian iron ore concentrate and its effects on sinter properties during the high-limonite sintering process

The basic characteristics of Australian iron ore concentrate (Ore-A) and its effects on sinter properties during a high-limonite sintering process were studied using micro-sinter and sinter pot methods. The results show that the Ore-A exhibits good granulation properties, strong liquid flow capability, high bonding phase strength and crystal strength, but poor assimilability. With increasing Ore-A ratio, the tumbler index and the reduction index (RI) of the sinter first increase and then decrease, whereas the softening interval (Delta T) and the softening start temperature (T (10%)) of the sinter exhibit the opposite behavior; the reduction degradation index (RDI+3.15) of the sinter increases linearly, but the sinter yield exhibits no obvious effects. With increasing Ore-A ratio, the distribution and crystallization of the minerals are improved, the main bonding phase first changes from silico-ferrite of calcium and aluminum (SFCA) to kirschsteinite, silicate, and SFCA and then transforms to 2CaO center dot SiO2 and SFCA. Given the utilization of Ore-A and the improvement of the sinter properties, the Ore-A ratio in the high-limonite sintering process is suggested to be controlled at approximately 6wt%.

Reservoir Characteristics and Favorable Area Prediction of Chang-6 Reservoir in Zhouguan Area, Ordos Basin

Based on the analysis of a large number of core samples, logging results, logging interpretation data and dynamic data in the study area, the characteristics of Chang 6 reservoir in Zhouguan area of Baihe area are studied, and the favorable reservoir areas in the study area are predicted. The results show that the lithology of Chang 6 reservoir is mainly light gray and gray fine-grained to very fine-grained feldspar lithic sandstone. The pore types are mainly residual intergranular pores and feldspar dissolved pores, including debris dissolved pores and microfractures. The porosity and permeability values are low, which belongs to low porosity-low permeability and ultra-low permeability reservoirs. According to the reservoir distribution characteristics and related data, the Chang 6 reservoir in the study area is divided into two types, mainly Class II and Class III reservoirs. The comprehensive evaluation predicts that the spatial distribution of the favorable area of Chang 6 reservoir is not uniform, but the distribution area is large, which has broad exploration and development value, and provides the necessary conditions for the distribution study of the favorable oil-bearing zone in this area and the preparation for the next exploration and development.

Research on basic characteristics of complex system brittleness

Tbe goal of this paper is to research one new characteristic of complex system. Brittleness, which is one new characteritic of complex system, is presented in this paper. The linguistic and qualitative descriptions of complex system are also given in this paper.Otherwise, the qualitative description of complex system is presented at first. On the basis of analyzing the existing brittleness problems, linguistic description and mathematic description of brittleness are given as well. Three kinds of phenomena to judge brittleness of complex system are also given, based on catastrophe theory. Basic characteristics of brittleness are given on the basis of its mathematic description. Two critical point sets are defined by using catastrophe theory. The definition of brittleness and its related theory can serve the control of complex system, and provide theoretical basis for the design and control of complex system.

A Summary of the Development Course of the Basic Issues of Socialism with Chinese Characteristics

Socialism with Chinese characteristics is a great cause without experience for reference. Under the general theme of adhering to and developing socialism with Chinese characteristics,the basic issues of socialism with Chinese characteristics are specifically composed of three aspects: the ruling construction of the Communist Party of China,the construction of socialism with Chinese characteristics and the development of human society. In the process of realizing the great leap of the Chinese nation to stand up,become rich,and become strong,the Chinese Communists,mainly represented by Mao Zedong,Deng Xiaoping,Jiang Zemin,Hu Jintao and Xi Jinping,have relayed to explore the basic issues of socialism with Chinese characteristics over the past 70 years,and constantly deepen their understanding of the laws governing the construction of the ruling party,the laws of socialist construction,and the laws of the development of human society.

Basic Characteristics of Waterfalls in the Yarlung Zangbo River

The Great Bent in the lower reaches of the Yarlung Zangbo River in Tibet houses the largest fluvial gorge in the world. On October 18, 1998, the Chinese government named the gorge the Grand Canyon of the Yarlung Zangbo. Later, from October to December, the first trekking exploration through the canyon was successfully conducted by a group of Chinese scientists. In the meantime, the scientists carfled out a multi-disciplinary and comprehensive survey and made many discoveries in the region.

The New Detection and the Basic Characteristics of the Structural System of Taiwan Region of China—Using the Earth Satellite's Remote-sensing Images to Explain the Structural System of Taiwan Region of China

This text uses the regional geological investigation data and the remote sensing image data of earth-satellite remote sensing to synthetically analyze the structural system of Taiwan region of China. Authors detection-marked and assurance-marked and divided 5 kinds of structural system of the Taiwan region: (1) the wreath-shaped structural system, (2) the N-N-E oriented structural system, (3) the S-N oriented structural system, (4) the N-E oriented structural system, (5) the arc-shaped structural system. Combination of the texture faces and associated method were adopted to recover and reconstruct the structural evolution sequences and the formation periods. In this paper, problems such as the development process in geology etc. are also discussed, contributing new information to research the structural field of the East Asia and its tectonic plate movements and structural actions inside the land plate .

Some Characteristic Parameters of the Basic Components of the Solar Radio Emission

Four basic components of the solar radio emission: the quiet sun, the slowly varying component (SVC), the radio burst and the ultra-fast varying component (UFVC) are studied. As their six characteristic parameters: radiation source, brightness temperature, radiation lifetime, polarized radiation, radiation mechanism, and character of superposition are affirmed.

开放型区域产教融合实践中心的基本特征、功能定位与推进路径

开放型区域产教融合实践中心(简称“产教融合实践中心”)是对标产业发展前沿,由政府搭台、市场驱动,汇集产教资源,政、校、行、企等多元主体参与,旨在推动区域职业教育实训实践资源均衡发展,提升职业学校关键办学能力,为企业培养急需人才和提供技术服务的生产性实践组织形态。产教融合实践中心分为学校实践中心、公共实践中心、企业实践中心,具有参与主体的多元性、服务面向的区域性以及运营模式的多样性等基本特征;具备实践教学、社会培训、真实生产和技术服务等功能。要扎实推进产教融合实践中心建设,必须坚持政府引导,统筹谋划产教融合实践中心建设;坚持市场驱动,以股份制混合所有制推进产教融合实践中心建设;坚持同步发力,分类推进产教融合实践中心建设。

新时代法学基本范畴的重构——构建中国自主法学知识体系要论

在新时代背景下对法学基本范畴的内涵和体系进行重构,是构建中国自主法学知识体系的“成事之要”。“政治新时代”和“科技新时代”的到来,为法学基本范畴的重构提供了背景和动因。法学基本范畴从法学学科体系看构成了近代法律科学的“通用语汇”,从法学学术体系看可谓是法学理论创新的“思想芯片”,从法学话语体系看形塑了中国法学对外传播的“基本语法”。为了重构法学基本范畴,一方面要进行理论上的融会贯通,即贯通马克思主义、中华传统优秀法治文明和西方优秀法治文化三个传统,另一方面要对历史和当下的法治实践予以归纳提炼,并通过建构性解释上升为法学概念和范畴。重构的核心任务在于构筑兼具普遍性与中国性的法学基本范畴体系,为此既要加强对原创性概念和范畴的研究,也要加强对普遍法学概念和范畴的新内涵的研究,并按科学严密的内在结构构筑起以“法”和“法治”为核心、兼具静态性和动态性的二元法学基本范畴体系。

习近平新时代中国特色社会主义思想的世界观和方法论:辩证关系、核心要义与实践指向

把握好习近平新时代中国特色社会主义思想的世界观和方法论,要正确认识和处理世界观和方法论的关系、习近平新时代中国特色社会主义思想的世界观和方法论与马克思主义世界观和方法论的关系、与中华优秀传统文化的关系、与习近平新时代中国特色社会主义思想的关系。要从不同维度深刻领悟其核心要义,即必须坚持人民至上、必须坚持自信自立、必须坚持守正创新、必须坚持问题导向、必须坚持系统观念、必须坚持胸怀天下。习近平新时代中国特色社会主义思想的世界观和方法论具有强烈的实践指向性,要在学好用好马克思主义哲学的基础上,在“两个结合”中不断推进马克思主义中国化时代化,为新时代新征程推进中国式现代化提供行动指南。

信息偏食:概念内涵、主要表征及图书馆治理路径

文章在梳理现有零散文献的基础上,从概念性定义视角出发,系统探讨用户视角和技术视角下信息偏食的概念内涵、主要特征及其相关概念关系,据此探究信息偏食在图书馆这个具象化信息实践场域的表现。研究发现,信息偏食存在主动型偏食和被动型偏食,其在图书馆信息实践场域中可表征为无声的用户偏好,反射出信息选择的单一化;被动的技术接受,映射出服务内容的茧房化;隐匿的资源建设,折射出资源供给的单体化三个方面。最后,提出图书馆角度的治理路径:拓围资源建设,形塑资源内容供给多体性;优化技术平台,促进信息服务内容多样化;提升用户素养,培育用户信息偶遇敏感性。

新工科视角行业特色高校数理基础课程的理性思考

应我国高等工程教育改革新方向和新工科建设国家战略新需求,依托建筑类行业特色高校的学科专业特色,以新型建筑工业化新工科专业人才培养目标为引导,聚焦创新性思维能力培养,按照“教学目标要求、客观世界认知、科学思维训练、工程技术应用、思想塑性培养、核心素养提升”逻辑,重新梳理数理基础课程体系与教学内容,探索数理基础课程教学改革支撑新工科人才培养的新路径,以期为新工科卓越创新人才培养的高度、广度和厚度提供有效支撑.

中国特色档案学的基本范畴与核心命题

新中国成立后,中国特色档案学先后经历了探索期、发展期和创新期三个发展阶段,形成了具有中国特色的档案学学科体系、学术体系与话语体系。新时代的历史方位下,厘清中国特色档案学的学科内核和学理内涵,是保持学科独立性、提升学科话语权、推动学科持续发展的必需之举。本文结合中国特色档案学的历史沿革与研究内容,总结出中国特色档案学的四个基本范畴及其十六个核心命题,并阐释范畴之间的内在逻辑关系。在四个基本范畴中,档案的本质及其形成规律是学科的逻辑起点,档案管理核心环节设计及理论应用是学科的立足之道,档案事业研究及其社会服务是学科的生存之基,档案学理论与方法是学科持续发展的活力之源。总结归纳中国特色档案学的基本范畴与核心命题,有助于更新和延展学科内涵,使档案学以全新的面貌立足于学科之林。

乳腺癌组织中bFGF、Ki-67及ADAM15表达情况及与其临床病理特征的相关性分析

目的 探讨乳腺癌组织中碱性成纤维细胞生长因子(bFGF)、Ki-67及去整合素金属蛋白酶15(ADAM15)表达情况及其与临床病理特征的关系。方法 选取87例乳腺癌患者作为研究对象,均行手术治疗,采集肿瘤标本及癌旁标本行免疫组化染色检查,比较肿瘤组织及癌旁组织内bFGF、Ki-67及ADAM15表达情况,并分析bFGF、Ki-67及ADAM15表达与其临床病理特征的关系。结果 肿瘤组织内bFGF、Ki-67及ADAM15阳性率高于癌旁组织,差异有统计学意义(P<0.05);bFGF阳性组肿瘤Ⅲ~Ⅳ期、有淋巴结转移、肿瘤直径≥3 cm占比高于bFGF阴性组,差异有统计学意义(P<0.05);Ki-67阳性组肿瘤Ⅲ~Ⅳ期、有淋巴结转移、肿瘤直径≥3 cm占比高于Ki-67阴性组,差异有统计学意义(P<0.05);ADAM15阳性组肿瘤Ⅲ~Ⅳ期、有淋巴结转移、肿瘤直径≥3 cm占比高于ADAM15阴性组,差异有统计学意义(P<0.05)。结论 bFGF、Ki-67及ADAM15在乳腺癌组织内存在较高阳性表达,且与肿瘤分期、淋巴结转移及肿瘤直径存在密切关系,或可作为完善乳腺癌治疗方案的新靶点。

高职教育高质量发展的时代内涵和基本特征

高职教育高质量发展具有丰富的时代内涵。从基本理念看,是符合“新发展理念”的发展;从目标导向看,是服务经济社会高质量发展的发展;从实现路径看,是实现质量、效率和动力变革的发展;从根本目的看,是满足人民群众对职业教育新期待和新需求的发展。进入新发展阶段,高职教育高质量发展呈现出四个基本特征:第一,从“数量追赶”转向“质量追赶”;第二,从“规模扩张”转向“结构优化”;第三,从“要素推动”转向“创新驱动”;第四,从“相对封闭”转向“更加开放”。

中国共产党领导卫生防疫事业的百年历程、基本特点和经验启示

中国共产党自成立之初,就将保障人民健康同争取民族独立、人民解放的事业紧密联系,高度重视国内卫生防疫事业发展工作。中国共产党领导下的百年卫生防疫事业经历初创、拓展、完善与跨越式发展四大时期,取得历史性进展与成效,形成凸显防疫工作政治价值、遵循人民至上价值准则、坚持依法防控重要原则、落实群防群控防疫机制的基本特点。在百年卫生防疫实践中,中国共产党积累了丰富的经验,历史经验表明,坚持党在防疫工作中的领导地位是做好卫生防疫工作的根本保证,坚持科学防治是战胜疫情的最有力武器,坚持群众路线是推动卫生防疫事业不断前进的基本凭藉。

文学理论中国学派基本特征试探

文学理论中国学派是中国特色文学理论发展的新阶段与新境界,是中国特色文学理论中围绕中国性建构起来的成熟学术共同体。中国学派理应有自己的规定性也即基本特征,这可以从四个方面探讨:以马克思主义为指导;表现中国现实,解决中国问题;保持主体性,体现中国观点中国智慧;传承中华文化、中华审美精神,坚守民族形式。既要有特征又要有成就,是文学理论中国学派在建构的过程应该同时具备的两个方面。

五年制高职数学课程思政:基本特征、载体选择与实施路径

课程思政是一种课程承载思政、思政寓于课程的全新思想政治工作理念。数学课程思政具有重要的价值意蕴,是开展思政教育的有效载体,也是实现全员育人的重要途径。在教学实践基础上提炼出五年制高职数学课程思政的基本特征,阐述了育人载体的选择策略,并重点说明了实施的关键路径。

粉煤灰再生混凝土配筋梁的受弯性能研究

研究了再生粗骨料取代率(0、30%、60%、100%)对粉煤灰混凝土基本力学性能的影响,并设计制作了4根相同配筋率的试验梁,分析了其受弯破坏情况。结果表明:随着再生粗骨料取代率的增加,粉煤灰混凝土的抗压强度、劈裂抗拉强度、轴心抗压强度和弹性模量均先增大后减小;粉煤灰再生混凝土试验梁的正截面应变服从平截面假定,随着再生粗骨料取代率的增加,试验梁的延性和开裂荷载基本呈降低趋势,裂缝数量、裂缝最大宽度和屈服荷载均先增大后减小,极限荷载呈先增大后减小再增大的趋势。