Longitudinal Study of Lanana Creek

A longitudinal study was done to collect data on the various conditions of LananaCreek in Nacogdoches, Texas over a seven week span from September 14 to November 2, 2018. The part of the creek studies is a 3.5 mile stretch from East Austin Street to Hoya Soccer Complex, mostly located on the campus of Stephen F. Austin State University. There were 6 different testing sites selected along this expanse. Collection of samples was performed by the General Chemistry I Honors class as part of the laboratory experience. Once collected, the samples were transported back to the lab for testing. The tests performed on the samples included determination of the pH, total solids, total dissolved solids, water hardness, anion concentration, and alkalinity. Each of these tests analyzes for a different parameter that is essential in evaluating the health of the ecosystem as a whole and gives a good reflection of the overall health of the creek’s surrounding environment. The results were compared to EPA standards. During the testing period, there were significant rain events generating variable results after each sampling, but the overall study shows that LananaCreek is healthy

DEGROWTH LESSONS FROM CUBA

Cuba is the global leader in practicing agroecology, but agroecology is just one component of a larger climate-ready socio-economic system. Degrowth economics address the need to constrain our total global metabolism to within biophysical limits, while allowing opportunity and resources for underdeveloped countries to rebuild themselves under new terms. Degrowth recognizes the role of overdeveloped countries in surpassing the ecological limits of our planet at the cost of wellbeing for billions of dispossessed people within and between countries. Cuba\u27s circumstances during and following the Special Period exemplify both sides of the degrowth scenario, as well as demonstrating policy and grassroots adaptations to massive economic contraction, and potential forms/paths of development for the Global South within degrowth. This scenario demonstrates the theory and practices of 1) a catastrophic transition out of highly industrialized agriculture and 2) a path of recovery toward a dignified quality of life while under serious economic and political constraints, providing lessons for both the Global North and South . This case study of a socialist country uses historical and dialectical materialism to argue that an effective degrowth transformation is encompassed by and most effectively pursued through the revolutionary socialist struggle to transform society. The analysis of Cuba\u27s agroecological story demonstrates the significance of the following characteristics in revolutionary systems of production for achieving just standards of living for global humanity: a planned economy with the nationalization of resources and centralizing planning, and worker’s democracy enacted through mass movements, organized democratic structures, and a conscious revolutionary leadership

Theorizing age and gender in the pursuit of love in late life

In this dissertation, I explore how women and men in later life experience the world of dating and the pursuit of new intimate relationships. Although the mortality gap between women and men at older ages is narrowing, as they enter their 70s, 80s, and 90s, there are still at least two unmarried women for every unmarried man. This gender imbalance is due to women's greater longevity and cultural norms based in gender relations that underlie men's preference for younger partners at all ages--and, throughout most of their lives, women's preference for older partners. Viewing the pursuit of new intimate relationships as embedded within intersecting systems of age and gender inequality, my goal was to explore how unmarried heterosexual women and men negotiate the world of dating in late life and how they view themselves and each other as aging men and women. This research focuses on White heterosexual women and men 70 years of age and older who were actively pursuing new dating relationships through personal newspaper ads and Internet dating and matching sites. Positioning the search for new intimate partners within the intersection of age relations and gender relations, I addressed two research questions. First, I sought to understand how unmarried—widowed, divorced, or always single—heterosexual women and men age 70 and older who are actively pursuing new intimate relationships view and describe their experience of the world of late-life dating, their place in it as aging men and women, and the dating partners they encounter. Second, I examined how, as men and women in aging bodies in a culture that devalues both old age and old people, they maintain, negotiate, or construct their sense of manhood and masculinity or womanhood and femininity in the context of dating, romance, and sexual intimacy. This dissertation consists of two studies, both grounded in a constructivist/interpretive paradigm and the thematic analysis of in-depth, semistructured interviews with 24 informants (11 women and 13 men) between the ages of 70 and 92. In the first study, using an intersectional framework of age relations and gender relations, I examined how internalized negative stereotypes of aging in general and one's own aging, in particular, shape the ways in which old men and women position themselves for finding romantic partners and how they manage identity to make themselves attractive romantic partners in an ageist society. Through their personal ads, Internet profiles, posted pictures, and within the interviews themselves, I found that informants both maintained and subverted age and gender expectations. They consistently resisted a self-identity as old by invoking claims and affirmations of neither looking nor acting their chronological age. Simultaneously, they communicated admonitions to potential dating partners that they should not look or act old. Both the men and the women were seeking new romantic partners younger than themselves, with the men's mean lower age 21 years younger and the women's, 10 years younger. In the second study, also grounded in considerations of age relations and gender relations, I examined informants' orientations to sexual activity and the importance of sex in their dating lives. Findings showed that, contrary to ageist stereotypes depicting old people as asexual and earlier research findings that older adults might settle for alternate intimate activities, the majority of the women and men in this study expressed interest in an intimate relationship that includes sex, and most interpreted this to mean penetrative intercourse. Nearly all of the men were sexually active with younger partners, with over half either using or holding samples of drugs for the treatment of erectile dysfunction (ED). A far smaller percentage of the women were currently dating or sexually active, and none had experience with partners who required the functional assistance of ED drugs. In conclusion, the informants present a picture of late-life dating in which individuals both consciously and unconsciously submit to, resist, and sometimes defy the structural constraints presented by societal ageism, age relations, and gender relations. The intersecting systems of inequality and oppression that impact these women and men as they pursue new love may seem only to privilege old men, offering them, for instance, advantage in terms of more lenience in showing their age and a broader age range in which to pursue dating partners. As a group, however, the women expressed more satisfaction with their lives and were less driven by the desire for an intimate partner, relishing the independence and autonomy their unattached status allowed them

Insights into the mechanism for gold catalysis: behaviour of gold(i) amide complexes in solution

We report the synthesis and activity of new mononuclear and dinuclear gold amide complexes . The dinuclear complexes and were characterised by single crystal X-ray analysis. We also report solution NMR and freezing point depression experiments to rationalise their behaviour in solution and question the de-ligation process invoked in gold catalysis

Bis(dicyclo­hexyl­phenyl­phosphine)silver(I) nitrate

The title compound, [Ag(C18H27P)2]NO3, is a mononuclear salt species in which the Ag atom is coordinated by two phosphine ligands, forming a cation, with the nitrate as the counter-anion, weakly inter­acting with the Ag atom, resulting in Ag⋯O distances of 2.602 (6) and 2.679 (6) Å. The cationic silver–phosphine complex has a non-linear geometry in which the P—Ag—P angle is 154.662 (19)°. The Ag—P bond lengths are 2.4303 (6) and 2.4046 (5) Å

Interdecadal variability of the eastward current in the South China Sea associated with the summer Asian monsoon

Author Posting. © American Meteorological Society, 2010. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Climate 23 (2010): 6115-6123, doi:10.1175/2010JCLI3607.1.Based on the Simple Ocean Data Assimilation (SODA) dataset and three types of Sverdrup streamfunction, an interdecadal variability of the eastward current in the middle South China Sea (SCS) during summer is identified. Both the pattern and strength of the summer Asian monsoon wind stress curl over the SCS contribute to the interdecadal variability of this current. From 1960 to 1979, the monsoon intensified and the zero wind stress curl line shifted southward. Both the core of positive wind stress curl in the northern SCS and the negative curl in the southern SCS moved southward and thus induced a southward shift of both the southern anticyclonic and northern cyclonic gyres, resulting in a southward displacement of the eastward current associated with these two gyres. In the meantime, the southern (northern) SCS anticyclonic (cyclonic) ocean gyre weakened (strengthened) and therefore also induced the southward shift of the eastward current near the intergyre boundary. In contrast, the eastward current shifted northward from 1980 to 1998 because the monsoon relaxed and the zero wind stress curl line shifted northward. After 1998, the eastward jet moved southward again as the zero wind stress curl line shifted southward and the SCS monsoon strengthened. The eastward current identified from the baroclinic streamfunction moved about 1.7° more southward than that from the barotropic streamfunction, indicating that the meridional position of the eastward current is depth dependent.This study was supported by the National BasicResearch Program (Grant 2007CB816003) and the National Natural Science Foundation of China (Grants 40976017, 40730843, and 40876004)

Bis[dicyclo­hexyl­(phenyl)­phosphane-κP]silver(I) perchlorate dichloro­methane monosolvate

In the title compound, [Ag{P(C6H11)2(C6H5)}2]ClO4·CH2Cl2, the AgI atom in the mononuclear complex cation is coordinated by two P atoms of the phosphane ligands [Ag—P = 2.3993 (4) and 2.4011 (4) Å; P—Ag—P = 177.473 (18)°] and the perchlorate anion acts as the counter-anion. There is an Ag⋯Operchlorate inter­action of 2.873 (2) Å, which contributes to the slightly non-linear bond angle about the AgI atom. Weak inter­molecular C—H⋯O hydrogen-bonding inter­actions involving phenyl, cyclo­hexyl and dichloro­methane H-atom donors and perchlorate O-atom acceptors contribute to the stabilization of the crystal structure

Satellite Salinity Observing System: Recent Discoveries and the Way Forward

Advances in L-band microwave satellite radiometry in the past decade, pioneered by ESA’s SMOS and NASA’s Aquarius and SMAP missions, have demonstrated an unprecedented capability to observe global sea surface salinity (SSS) from space. Measurements from these missions are the only means to probe the very-near surface salinity (top cm), providing a unique monitoring capability for the interfacial exchanges of water between the atmosphere and the upper-ocean, and delivering a wealth of information on various salinity processes in the ocean, linkages with the climate and water cycle, including land-sea connections, and providing constraints for ocean prediction models. The satellite SSS data are complimentary to the existing in situ systems such as Argo that provide accurate depiction of large-scale salinity variability in the open ocean but under-sample mesoscale variability, coastal oceans and marginal seas, and energetic regions such as boundary currents and fronts. In particular, salinity remote sensing has proven valuable to systematically monitor the open oceans as well as coastal regions up to approximately 40 km from the coasts. This is critical to addressing societally relevant topics, such as land-sea linkages, coastal-open ocean exchanges, research in the carbon cycle, near-surface mixing, and air-sea exchange of gas and mass. In this paper, we provide a community perspective on the major achievements of satellite SSS for the aforementioned topics, the unique capability of satellite salinity observing system and its complementarity with other platforms, uncertainty characteristics of satellite SSS, and measurement versus sampling errors in relation to in situ salinity measurements. We also discuss the need for technological innovations to improve the accuracy, resolution, and coverage of satellite SSS, and the way forward to both continue and enhance salinity remote sensing as part of the integrated Earth Observing System in order to address societal needs