Investigating Sedimentary Rocks to Understand Past Wet Climate of Mars

The “deltaic” geomorphology in the Eberswalde Crater is often considered a “smoking gun” for the warm-and-wet ancient climate of Mars. The Crater displays sedimentary features, which many argue, can only be found in a river-delta system (Bhattacharya et al., 2005). However, with the advent of high-resolution images, the Eberswalde Crater delta’s geomorphology has been revealed to be more complicated than could be seen previously. These high-resolution data suggest that the development of the Eberswalde delta is likely more episodic (Schieber 2007). While better resolution data has placed doubt on the wet Mars hypothesis at the Eberswalde Crater, the opposite is true of the Gale Crater. Recent images acquired by the Mars Curiosity Rover have revolutionized the hypotheses explaining the formation of Mount Sharp in the Gale Crater. The new prevailing hypothesis is that Mount Sharp was formed by a series of crater lakes (NASA, 2014). This study provides evidence supporting the crater lake hypothesis, using bedding architecture diagrams, facies diagrams, lithologic logs, paleocurrent map and rose diagram, and minimum water depth estimations of the exposed sedimentary layers. Reconstructing a detailed depositional history of the Gale Crater Lake provides a window into a more ancient Mars where life could have evolved in a wet habitable climate that is absent today

Investigating Sedimentary Rocks to Understand Past Wet Climate of Mars

The “deltaic” geomorphology in the Eberswalde Crater is often considered a “smoking gun” for the warm-and-wet ancient climate of Mars. The Crater displays sedimentary features, which many argue, can only be found in a river-delta system (Bhattacharya et al., 2005). However, with the advent of high-resolution images, the Eberswalde Crater delta’s geomorphology has been revealed to be more complicated than could be seen previously. These high-resolution data suggest that the development of the Eberswalde delta is likely more episodic (Schieber 2007). While better resolution data has placed doubt on the wet Mars hypothesis at the Eberswalde Crater, the opposite is true of the Gale Crater. Recent images acquired by the Mars Curiosity Rover have revolutionized the hypotheses explaining the formation of Mount Sharp in the Gale Crater. The new prevailing hypothesis is that Mount Sharp was formed by a series of crater lakes (NASA, 2014). This study provides evidence supporting the crater lake hypothesis, using bedding architecture diagrams, facies diagrams, lithologic logs, paleocurrent map and rose diagram, and minimum water depth estimations of the exposed sedimentary layers. Reconstructing a detailed depositional history of the Gale Crater Lake provides a window into a more ancient Mars where life could have evolved in a wet habitable climate that is absent today

Improving the Lives of Transgender Older Adults: Recommendations for Policy and Practice

Transgender and gender non-conforming adults face a myriad of challenges as they age. While very limited, the existing research on transgender people paints a picture of many people aging in isolation and without a network of knowledgeable or welcoming providers in the aging, health and social services arenas. Further, transgender elders often experience extreme disparities in access to health care and low rates of health insurance coverage due in large part to systemic discrimination from providers and insurance companies, as well as economic instability resulting from discrimination in employment and housing, among other areas. An overarching challenge for policymakersand practitioners isthe dearth in research examining the challenges facing this population--and the types of policies and programmatic interventions that would improve their lives. While the need for better data and more research on lesbian, gay and bisexual communities has gained support over the last few years, gender identity remains largely absent from the scope of social research and analysis. Moreover, few studies have addressed the specific challenges facing transgender elders. Research focused on transgender people of color is even more limited, despite some studies suggesting that they experience high levels of violence and discrimination

Redesigning a Hospital’s Evidence-Based Practice Course

The Medical University of South Carolina (MUSC) Value Institute, which falls under the hospital’s Quality Department, has contributed to evidence-based practice (EBP) culture through education, evidence synthesis services, and the development of clinical decision support tools. Three members of the Value Institute -- a librarian, Clinical Evidence-Based Analyst, and Senior Value Specialist -- have taught a variety of EBP courses to clinicians over the years. However, because of increasing course dropout rates, the Value Institute conducted focus groups to identify ways to redesign the course. Two focus groups consisted of 6-8 previous course participants each. The focus groups started with an introduction, challenge statement, and problem statement. Participants silently brainstormed answers to four questions then posted answers to wall-mounted paper. A group discussion followed

Childless by circumstance – using an online survey to explore the experiences of childless women who had wanted children

Childlessness is increasing globally. This study aimed to explore the experiences of childless women who had wanted children. An online survey study was promoted through social media to recruit women aged ≥46 years who were childless by circumstance. The survey remained open for 15 days. In total, 303 survey responses were collected, 176 of which were complete surveys. In total, 15.3% (27/176) of women who had wanted children reported that they had not tried to have children, most commonly due to the lack of a partner (40.7%, 11/27). Of the 139 women who had tried to have children, 70.5% (98/139) had used calendar-based menstrual cycle tracking methods to identify their fertile window, and many had undergone fertility checks including hormone tests (75.5%, 105/139) and ultrasound scans (71.2%, 99/139). A significant proportion of women had experienced a miscarriage (40.2%, 56/139). Many women had decided not to have any fertility treatment (43.2%, 60/139). For those who did, the majority had tried in-vitro fertilization (74.6%, 59/79). The most common reason that women gave for stopping fertility treatment was due to emotional reasons (74.7%, 59/79). When asked how women felt now about their childlessness, the most common issues identified were unhappiness (85/158, 54%), acceptance (43/158, 27%) and happiness (30/158, 19%). There should be more support for unsuccessful fertility patients and other childless women, and more emphasis should be placed upon fertility education in order to ensure that women are better informed about fertility issues

Google Maps as a Transformational Learning Tool in the Study Abroad Experience

This article examines the role that spatial orientation and location can play on a study abroad program. Jessica Stephenson and M. Todd Harper paired a Google Maps project with autoethnography in order to help students understand their own experience of space abroad as well as how they themselves shaped that space. Students were asked to create a personalized Google Map of the sites that they visited in Rome, Orvieto, Florence, and Montepulciano, Italy. Students then added facts about the sites as well as their own photos and personal experience. They were then asked to use their personalized Google Maps as a heuristic for longer autoethnographic papers relating to the themes of pilgrimage and journey. In so doing, students realized that space is alive, constantly changing and evolving

Using an introduction website to start a family: implications for users and health practitioners

Donor insemination treatment offered in licensed clinics protects the donor, recipient and offspring both medically and legally. The internet has opened up novel, unregulated ways of donating sperm through ‘introduction websites’ and social media forums. Broadly three categories of women use introduction websites: those who want to have a child with no further involvement of the donor; those who wish to know the identity of the donor from the start and those who intend to electively co-parent, that is, to bring up the child together with the donor/father. Donors may choose to donate through introduction websites for altruistic reasons and/or in order to have greater involvement with the child. There are some donors who are motivated by the prospect of a sexual encounter, advertising their preference for natural insemination, via sexual intercourse or partial intercourse. When people make their own arrangements online, they may do so in the absence of clear, accurate information. In this article, we set out some of the issues that recipients and donors ought to consider before embarking on unregulated sperm donation

Error Compensation of Single-Qubit Gates in a Surface Electrode Ion Trap Using Composite Pulses

The fidelity of laser-driven quantum logic operations on trapped ion qubits tend to be lower than microwave-driven logic operations due to the difficulty of stabilizing the driving fields at the ion location. Through stabilization of the driving optical fields and use of composite pulse sequences, we demonstrate high fidelity single-qubit gates for the hyperfine qubit of a $^{171}\text{Yb}^+$ ion trapped in a microfabricated surface electrode ion trap. Gate error is characterized using a randomized benchmarking protocol, and an average error per randomized Clifford group gate of $3.6(3)\times10^{-4}$ is measured. We also report experimental realization of palindromic pulse sequences that scale efficiently in sequence length