581 research outputs found
An Evaluation of Ecolabels, Standards & Certifications in the Chemical Industry
In recent years, ecolabels, standards and certifications (ESCs) have been increasingly utilized to signal a product’s environmental and socially responsible profile, both in the business-to-business and business-to-consumer spheres. The growing demand for this sustainability information from consumers, retailers, and governments has put pressure on the suppliers to provide qualitative and quantitative data on products’ environmental footprint.
A multi-national chemical company and the University of Michigan School of Natural Resources team have collaborated to conduct this master’s project, An Evaluation of Ecolabels, Standards & Certifications in the Chemical Industry. The purpose of this project is to provide a strategy for multinational chemical companies to better engage their customers in the marketplace in a way that supports the transfer of sustainability information throughout the value chain. The student team engaged with stakeholders in sustainability reporting, studied a number of ecolabel schemes, and developed a survey addressing members of the home and personal care industry to learn from their experience and priorities. Results of the survey indicate that home and personal care manufacturers expect to double the percentage of their products labeled with an ESC in the next five years. Manufacturers use ESCs on finished products to differentiate, and to increase market penetration and perception of product quality. The main barriers to this use of ESCs are the lack of accredited raw materials and supplier information. The R&D department is most often the agent pursuing ingredients labeled with an ESC and the most important decision-making factors influencing procurement are unsurprisingly, performance and price.
Suppliers of ingredients to home and personal care manufacturers can use valuable ESCs as a short-term measure to communicate the ingredient sustainability information, but given the ongoing development of the ESC marketplace, businesses throughout the value chain should continue to collaborate with stakeholders and watch for trends.Master of ScienceNatural Resources and EnvironmentUniversity of Michiganhttp://deepblue.lib.umich.edu/bitstream/2027.42/90877/1/An_Evaluation_of_Ecolabels,_Standards_and_Certifications_in_the_Chemical_Industry[1].pd
The Fountain District: Framework Plan
The \u27South Auditorium\u27 neighborhood established itself in the days when loggers and other workers filled the district’s hotels due to its proximity to the river. In the wake of the Great Depression and as the logging trade declined, the area began to fall into disrepair and development shifted away from the Willamette River. By the 1950s, many of its 2,000+ inhabitants were low-income or elderly and living in small, poorly maintained apartments, shuffling from one to the next as they were forced out of their prior home. The neighborhood was also extremely diverse, housing numerous immigrant families, particularly Italian, Jewish, Chinese, and African American families.
In 1955, the newly formed Portland Development Commission targeted a block of land in what was then considered part of South Portland as a test of the new Urban Renewal philosophy making the rounds in planning circles, at the behest of the Mayor’s Advisory Committee. It was decided that a 110 acre portion of the district would be razed in two phases.
Interestingly, the district had originally been intended as the home for a new expo center or coliseum, with the remaining redevelopment occurring around it. This center would be just the sort of attraction to lure people to the city center, it was believed; these plans were scrapped, however, after conflicts between interested parties on each side of the Willamette resulted in the centerpiece of the project (later to be Veterans’ Memorial Coliseum) being relocated to the eastern side of the river.
Inspired by the design principles of Le Corbusier and the budgets of major firms such as Skidmore, Owings, and Merrill (SOM), renewal pressed onward, with the forthcoming towers and plazas to be punctuated by greenspaces, among them a set of fountains crafted by Lawrence Halprin. Little, if anything, remains of the district as it had existed prior to the removal of the area’s residences, businesses, and the communities who resided there.
This project was conducted under the supervision of Donald J. Stastny and Edward Starkie
A small satellite version of a soft x-ray polarimeter
We describe a new implementation of a broad-band soft X-ray polarimeter, substantially based on a previous design. This implementation, the Pioneer Soft X-ray Polarimeter (PiSoX) is a SmallSat, designed for NASA’s call for Astrophysics Pioneers, small missions that could be CubeSats, balloon experiments, or SmallSats. As in REDSoX, the grating arrangement is designed optimally for the purpose of polarimetry with broad-band focussing optics by matching the dispersion of the spectrometer channels to laterally graded multilayers (LGMLs). The system can achieve polarization modulation factors over 90%. For PiSoX, the optics are lightweight Si mirrors in a one-bounce parabolic configuration. High efficiency, blazed gratings from opposite sectors are oriented to disperse to a LGML forming a channel covering the wavelength range from 35 Å to 75 Å (165 - 350 eV). Upon satellite rotation, the intensities of the dispersed spectra, after reflection and polarizing by the LGMLs, give the three Stokes parameters needed to determine a source’s linear polarization fraction and orientation. The design can be extended to higher energies as LGMLs are developed further. We describe examples of the potential scientific return from instruments based on this design
A Small Satellite Version of a Broad-band Soft X-ray Polarimeter
We describe a new implementation of a broad-band soft X-ray polarimeter,
substantially based on a previous design. This implementation, the Pioneer Soft
X-ray Polarimeter (PiSoX) is a SmallSat, designed for NASA's call for
Astrophysics Pioneers, small missions that could be CubeSats, balloon
experiments, or SmallSats. As in the REDSoX Polarimeter, the grating
arrangement is designed optimally for the purpose of polarimetry with
broad-band focussing optics by matching the dispersion of the spectrometer
channels to laterally graded multilayers (LGMLs). The system can achieve
polarization modulation factors over 90%. For PiSoX, the optics are lightweight
Si mirrors in a one-bounce parabolic configuration. High efficiency, blazed
gratings from opposite sectors are oriented to disperse to a LGML forming a
channel covering the wavelength range from 35 to 75 Angstroms (165 - 350 eV).
Upon satellite rotation, the intensities of the dispersed spectra, after
reflection and polarizing by the LGMLs, give the three Stokes parameters needed
to determine a source's linear polarization fraction and orientation. The
design can be extended to higher energies as LGMLs are developed further. We
describe examples of the potential scientific return from instruments based on
this design.Comment: 20 pages, 8 figures, to appear in Proceedings SPIE, volume 1144
'A tragedy as old as history':Medical responses to infertility and artificial insemination by donor in 1950s Britain
This chapter will explore how the infertile patient was characterized, perceived, and treated by the medical profession in 1950s England and Scotland. Such was the concern that this subject engendered in postwar Britain that a Departmental Committee was appointed in 1958 (known as the Feversham Committee) to investigate infertility and its treatment through artificial insemination. The written and oral evidence submitted by medical witnesses to that Committee offers rich insights into medical thinking and practice, and into the complex sociomedical politics and ethical anxieties which surrounded the topic. The testimony of legal and religious witnesses will also be explored to a more limited extent in order to offer some context to medical understandings and treatments of infertility. It will be considered how women’s bodies, personalities, and even agency in proactively seeking motherhood through artificial insemination were heavily pathologized in medical and religious discourses, but also how the men involved – husbands, sperm donors and even doctors – did not escape this tendency to pathologize
A small satellite version of a soft x-ray polarimeter
We describe a new implementation of a broad-band soft X-ray polarimeter, substantially based on a previous design. This implementation, the Pioneer Soft X-ray Polarimeter (PiSoX) is a SmallSat, designed for NASA’s call for Astrophysics Pioneers, small missions that could be CubeSats, balloon experiments, or SmallSats. As in REDSoX, the grating arrangement is designed optimally for the purpose of polarimetry with broad-band focussing optics by matching the dispersion of the spectrometer channels to laterally graded multilayers (LGMLs). The system can achieve polarization modulation factors over 90%. For PiSoX, the optics are lightweight Si mirrors in a one-bounce parabolic configuration. High efficiency, blazed gratings from opposite sectors are oriented to disperse to a LGML forming a channel covering the wavelength range from 35 Å to 75 Å (165 - 350 eV). Upon satellite rotation, the intensities of the dispersed spectra, after reflection and polarizing by the LGMLs, give the three Stokes parameters needed to determine a source’s linear polarization fraction and orientation. The design can be extended to higher energies as LGMLs are developed further. We describe examples of the potential scientific return from instruments based on this design.Accepted manuscrip
Mechanisms of T cell organotropism
F.M.M.-B. is supported by the British Heart Foundation, the Medical Research Council of the UK and the Gates Foundation
Breast and Prostate Cancer Risks for Male BRCA1 and BRCA2 Pathogenic Variant Carriers Using Polygenic Risk Scores
Background: Recent population-based female breast cancer and prostate cancer polygenic risk scores (PRS) have been developed. We assessed the associations of these PRS with breast and prostate cancer risks for male BRCA1 and BRCA2 pathogenic variant carriers. Methods: 483 BRCA1 and 1318 BRCA2 European ancestry male carriers were available from the Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA). A 147-single nucleotide polymorphism (SNP) prostate cancer PRS (PRSPC) and a 313-SNP breast cancer PRS were evaluated. There were 3 versions of the breast cancer PRS, optimized to predict overall (PRSBC), estrogen receptor (ER)-negative (PRSER-), or ER-positive (PRSER+) breast cancer risk. Results: PRSER+ yielded the strongest association with breast cancer risk. The odds ratios (ORs) per PRSER+ standard deviation estimates were 1.40 (95% confidence interval [CI] =1.07 to 1.83) for BRCA1 and 1.33 (95% CI = 1.16 to 1.52) for BRCA2 carriers. PRSPC was associated with prostate cancer risk for BRCA1 (OR = 1.73, 95% CI = 1.28 to 2.33) and BRCA2 (OR = 1.60, 95% CI = 1.34 to 1.91) carriers. The estimated breast cancer odds ratios were larger after adjusting for female relative breast cancer family history. By age 85 years, for BRCA2 carriers, the breast cancer risk varied from 7.7% to 18.4% and prostate cancer risk from 34.1% to 87.6% between the 5th and 95th percentiles of the PRS distributions. Conclusions: Population-based prostate and female breast cancer PRS are associated with a wide range of absolute breast and prostate cancer risks for male BRCA1 and BRCA2 carriers. These findings warrant further investigation aimed at providing personalized cancer risks for male carriers and informing clinical management.Peer reviewe
Genome-Wide Association Study in BRCA1 Mutation Carriers Identifies Novel Loci Associated with Breast and Ovarian Cancer Risk
BRCA1-associated breast and ovarian cancer risks can be modified by common genetic variants. To identify further cancer risk-modifying loci, we performed a multi-stage GWAS of 11,705 BRCA1 carriers (of whom 5,920 were diagnosed with breast and 1,839 were diagnosed with ovarian cancer), with a further replication in an additional sample of 2,646 BRCA1 carriers. We identified a novel breast cancer risk modifier locus at 1q32 for BRCA1 carriers (rs2290854, P = 2.7×10-8, HR = 1.14, 95% CI: 1.09-1.20). In addition, we identified two novel ovarian cancer risk modifier loci: 17q21.31 (rs17631303, P = 1.4×10-8, HR = 1.27, 95% CI: 1.17-1.38) and 4q32.3 (rs4691139, P = 3.4×10-8, HR = 1.20, 95% CI: 1.17-1.38). The 4q32.3 locus was not associated with ovarian cancer risk in the general population or BRCA2 carriers, suggesting a BRCA1-specific associat
Mortality and pulmonary complications in patients undergoing surgery with perioperative SARS-CoV-2 infection: an international cohort study
Background: The impact of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) on postoperative recovery needs to be understood to inform clinical decision making during and after the COVID-19 pandemic. This study reports 30-day mortality and pulmonary complication rates in patients with perioperative SARS-CoV-2 infection. Methods: This international, multicentre, cohort study at 235 hospitals in 24 countries included all patients undergoing surgery who had SARS-CoV-2 infection confirmed within 7 days before or 30 days after surgery. The primary outcome measure was 30-day postoperative mortality and was assessed in all enrolled patients. The main secondary outcome measure was pulmonary complications, defined as pneumonia, acute respiratory distress syndrome, or unexpected postoperative ventilation. Findings: This analysis includes 1128 patients who had surgery between Jan 1 and March 31, 2020, of whom 835 (74·0%) had emergency surgery and 280 (24·8%) had elective surgery. SARS-CoV-2 infection was confirmed preoperatively in 294 (26·1%) patients. 30-day mortality was 23·8% (268 of 1128). Pulmonary complications occurred in 577 (51·2%) of 1128 patients; 30-day mortality in these patients was 38·0% (219 of 577), accounting for 81·7% (219 of 268) of all deaths. In adjusted analyses, 30-day mortality was associated with male sex (odds ratio 1·75 [95% CI 1·28–2·40], p\textless0·0001), age 70 years or older versus younger than 70 years (2·30 [1·65–3·22], p\textless0·0001), American Society of Anesthesiologists grades 3–5 versus grades 1–2 (2·35 [1·57–3·53], p\textless0·0001), malignant versus benign or obstetric diagnosis (1·55 [1·01–2·39], p=0·046), emergency versus elective surgery (1·67 [1·06–2·63], p=0·026), and major versus minor surgery (1·52 [1·01–2·31], p=0·047). Interpretation: Postoperative pulmonary complications occur in half of patients with perioperative SARS-CoV-2 infection and are associated with high mortality. Thresholds for surgery during the COVID-19 pandemic should be higher than during normal practice, particularly in men aged 70 years and older. Consideration should be given for postponing non-urgent procedures and promoting non-operative treatment to delay or avoid the need for surgery. Funding: National Institute for Health Research (NIHR), Association of Coloproctology of Great Britain and Ireland, Bowel and Cancer Research, Bowel Disease Research Foundation, Association of Upper Gastrointestinal Surgeons, British Association of Surgical Oncology, British Gynaecological Cancer Society, European Society of Coloproctology, NIHR Academy, Sarcoma UK, Vascular Society for Great Britain and Ireland, and Yorkshire Cancer Research
- …