Stop FEMA Now: Social media,activism and the sacrificed citizen

In an era of late capitalism and climate crisis, an expanding, heterogeneous network of people find themselves precariously positioned at the edge of disaster. This paper explores how Stop FEMA Now, a coalition of U.S. flood disaster survivors and other coastal homeowners, used social media to challenge neoliberal policies that produced – and then privatized – environmental risk. I find that social media played a crucial and sometimes unexpected role in enabling activists to organize across difference and cohere around an identity that emphasized their multiple layers of vulnerability and responsibilization. Through images that reembedded natural disasters in their political and economic contexts, activists exposed their historic and ongoing abandonment by neoliberal policies and state failures. Ultimately, such abandonments forfeited coastal homeowners to a future marked by fiscal and climate crisis, constituting them as sacrificed citizens. And yet, I also propose that the struggles of sacrificed citizens offer new possibilities for coalitions and pluralisms.     

Untersuchung der Sorptionseigenschaften des Kationenaustauschers KB-2M mit Makronetzstruktur zur Abtrennung von Zinkionen aus Ab- und Spülwässern

Study of Sorptional Properties of the Cation Exchanger KB-2M with Macroreticular Structure for Recovery of Zinc Ions from Sewage and Rinsing Water Although a number of ion-exchange methods have been employed for the recovery of some transition metals from industrial effluents, knowledge about ion-exchange resins with macroreticular structure is poor. The present paper describes the mechanism of sorption on such exchangers and their application for recovery of zinc from sewage rinsing water. Ion exchanger of macroreticular structure are polymers with long-chained cross-linking agents. We have synthesized carboxylic ion-exchange resins by hydrolysis of copolymerisates of methyl acrylate with different cross-linking agents: divinylbenzene, divinyl sulfide, divinyl ester of ethylene glycol and divinyl ester of di- or triethylene glycol. The sorption process on modifications of the carboxylic resins KB-2 of various structure was studied with different methods: potentiometric titration, infrared spectroscopy, electron microscopy, X-ray structural analysis. The initial zinc concentration in rinsing water was 0.05 mol/L at pH from 3 to 6. For the sorption, 0.2…1.0 g of resin were equilibrated with 100 mL of zinc solution. After equilibrium (12 h), the resin was separated from solution. The zinc ions were determined by atomic absorption spectrometry after stripping with 100 mL of 10% sulfuric acid. The distribution ratio D was calculated (D: mmole of Zn sorbed per gram of resin divided by mmole of Zn per millilitre of solution). By means of infrared spectroscopy, the mechanism of sorption of zinc ions from rinsing water was determined. There may be a possibility of the formation of complexes in the cation-exchange resin phase. It was found out in this paper that the cation-exchanger KB-2M of macroreticular structure is the most effective for the sorption of the Zn²⁺-ions from sewage and rinsing water.     

VLISP与VBA结合编程在测量放线工作中的应用

作为CAD二次开发工具中比较易学的编程工具,VBA和VLISP各有优点。VLSIP善于直接使用AutoCAD的命令,而VBA用来开发对话框显得简单得多。文中介绍将它们结合起来并成功开发出一个在CAD电子图上拾取坐标生成两种不同格式的测量放线文件程序的简单实例,提出在进行CAD二次开发的过程中,发挥VBA与VLISP各自的优点,通过"中介"CAD系统变量来传递数据信息的方法,把两种程序结合起来开发CAD应用程序。     

CHEMICAL CHARACTERISTICS OF WETLAND′S INFLOW DRY DIFFUSE DUST AND DIRT FROM IMPERVIOUS SURFACE

1INTRODUCTIONIn impervious area dry dustand dirtbuildup con-tains heavy metals,nutrients,pesticides and organ-ics.Many studies(APWA,1969;Sartor and Boyd,1972;Pitt and Amy,1973;Pitt,1979,1985;Yousef and Wanielista,1990;Wanielista andYousef,1993,Ball,et al.…     

旋转谱理论探讨

本文应用向量随机过程分解模型对旋转谱作出物理解释;此外,还修改了线性振荡度的定义,导出了极化度、线性振荡度和旋转系数之间的关系式,并讨论了它们与总相干、同相相干、异相相干之间的关系。     

平遥古城民居之门的形态变迁及其家的观念表征

新旧文化地理学者对物质空间与文化观念的关系有着不同的理解,是引发人文地理学文化转向的主要动力,而“文化超机体”的概念正是其争论的焦点。民居及其空间构成记载着城市历史,传递着城市记忆,是形成中国城镇历史特征的文化空间主体。通过解读平遥古城民居大门的文化属性,探究其文化过程发现：一方面,“家”作为文化超机体概念借由大门这一特定空间符号不同程度地留存于民居当中;另一方面,不同民居大门本身的文化特征,通过空间过程的追溯得以呈现。将文化的空间分析与空间的文化研究融入到微观形态分析的范式中,是对文化地理学超机体概念的批判性继承做出的呼应。     

Multiphysics modeling of CO2 sequestration in a faulted saline formation in Italy

The present work describes the results of a modeling study addressing the geological sequestration of carbon dioxide (CO₂) in an offshore multi-compartment reservoir located in Italy. The study is part of a large scale project aimed at implementing carbon capture and storage (CCS) technology in a power plant in Italy within the framework of the European Energy Programme for Recovery (EEPR). The processes modeled include multiphase flow and geomechanical effects occurring in the storage formation and the sealing layers, along with near wellbore effects, fault/thrust reactivation and land surface stability, for a CO₂ injection rate of 1 × 10⁶ ton/a. Based on an accurate reproduction of the three-dimensional geological setting of the selected structure, two scenarios are discussed depending on a different distribution of the petrophysical properties of the formation used for injection, namely porosity and permeability. The numerical results help clarify the importance of: (i) facies models at the reservoir scale, properly conditioned on wellbore logs, in assessing the CO₂ storage capacity; (ii) coupled wellbore-reservoir flow in allocating injection fluxes among permeable levels; and (iii) geomechanical processes, especially shear failure, in constraining the sustainable pressure buildup of a faulted reservoir.     

The Middle and Upper Devonian in southeastern flank of the Siberian platform (Southern Verkhoyansk Region,Sette-Daban Mountain Range)

Data on Middle and Upper Devonian deposits studied in southeastern flank of the Siberian platform are considered. A scheme of stratigraphic zoning in the study region is presented. Nineteen sedimentological and biotic events, which are recorded in the studied sections, are of the regional, interregional and global ranks. Their connection with eustatic sea-level fluctuations is established. Sections of the formation and regional horizon stratotypes and parastratotypes are described. The revision of species Mucrospirifer novosibiricus (Toll) is carried out.     

PGE geochemistry of Jiding ophiolite in Tibet and its constraint on mantle processes

The total PGE amount (σPGE) of mantle peridotite in the Jiding ophiolite is slightly higher than that of the primitive mantle, but the PGE contents of basalt are higher than those of the mid-ocean ridge basalt (MORB), with obviously lower Pd/Ir ratios. The accumulates, dyke swarm and basalts show remarkable negative Pt and positive Rh anomalies, resulting in the special N-type PGE patterns. Mantle peridotite and crustal rocks have similar distribution patterns. It is proposed that the PGE distribution patterns in the Jiding ophiolite are closely related with a higher degree of partial melting of the mantle in this region. Magmatic crystallization-differentiation led to PGE fractionation, thus making the contents of PGE in the accumulates decrease in the ascending direction. The higher content of Au in the Jiding ophiolite is the result of metasomatic alteration at later stages. Pt-Pd fractionation indicates that both the PGEs are controlled by their alloy and sulfide phases. Positive Rh anomalies seem to be related with higher oxygen fugacity in the melts.