Relaxation Design of Separable Tube Connectors

Design procedure to predict relaxation or time to leakage for separable tube connector

In-vivo magnetic resonance imaging of hyperpolarized silicon particles

Silicon-based micro and nanoparticles have gained popularity in a wide range of biomedical applications due to their biocompatibility and biodegradability in-vivo, as well as a flexible surface chemistry, which allows drug loading, functionalization and targeting. Here we report direct in-vivo imaging of hyperpolarized 29Si nuclei in silicon microparticles by MRI. Natural physical properties of silicon provide surface electronic states for dynamic nuclear polarization (DNP), extremely long depolarization times, insensitivity to the in-vivo environment or particle tumbling, and surfaces favorable for functionalization. Potential applications to gastrointestinal, intravascular, and tumor perfusion imaging at sub-picomolar concentrations are presented. These results demonstrate a new background-free imaging modality applicable to a range of inexpensive, readily available, and biocompatible Si particles.Comment: Supplemental Material include

The development and evaluation of a speciality hand knitting yarn using appropriate technology for the empowerment of women in rural India.

The study is based on developing a speciality hand knitting yarn using silk remnants collected from sari weaving handlooms in Vellanchery village, South India. The research was built upon observations in the village designed to identify an appropriate method for the manufacture of yarn that would be acceptable for the unpaid female labour in the handloom sector. The initial field study lead to more sustainable methods of production and quality analysis of the resultant yarn. The speciality yarn was tested against five market available hand knitting yarns, which were similar in terms of visual effect and handle. The objective measurements of the yarn were triangulated with subjective data to provide a complete quality analysis. Finally, a branding strategy was developed for labelling and packaging. The aim of this paper is the identification and proving of the appropriate technology and thorough evaluation of the properties of the yarn and fabric

A trap-based pulsed positron beam optimised for positronium laser spectroscopy

We describe a pulsed positron beam that is optimised for positronium (Ps) laser-spectroscopy experiments. The system is based on a two-stage Surko-type buffer gas trap that produces 4 ns wide pulses containing up to 5 × 105 positrons at a rate of 0.5-10 Hz. By implanting positrons from the trap into a suitable target material, a dilute positronium gas with an initial density of the order of 107 cm−3 is created in vacuum. This is then probed with pulsed (ns) laser systems, where various Ps-laser interactions have been observed via changes in Ps annihilation rates using a fast gamma ray detector. We demonstrate the capabilities of the apparatus and detection methodology via the observation of Rydberg positronium atoms with principal quantum numbers ranging from 11 to 22 and the Stark broadening of the n = 2 → 11 transition in electric fields

An Occupational Therapy Guidebook for Individuals with Substance Use Disorder

Individuals with substance use disorder (SUD) experience barriers and challenges that impact their daily occupational performance, engagement, well-being, and quality of life. In addition to disrupting and distorting an individual’s unique occupational outcomes, SUDs can limit, replace, and dictate an individual’s daily meaningful activities, habits, routines, and skills that support healthy occupational engagement. Occupational therapy (OT) practitioners have a unique and valuable role in SUDs treatment as they are equipped to identify these barriers and implement strategies for supportive skill development or restoration. Based on the literature review conducted, OT practitioners do not have an OT practice guideline, protocol, or manualized intervention available to guide OT practice when working with clients with SUDs. The purpose of this capstone project is to address this concern and develop an OT guidebook for OT practitioners working with individuals with SUDs using the theoretical framework of the Model of Human Occupation (MOHO). The methodology of this project consists of three phases: (a) the pre-development phase, (b) the development phase, and (c) the review and revision phase. The guidebook consists of five chapters that supply OT practitioners with recommended best-practice methods to implement the OT process while working with individuals in this client population as well as recommendations for other resources available to the community. The development of this capstone project will expand OT scholarship and practice as well as create a foundation to examine the efficacy of OT in mental health and SUD treatment.https://soar.usa.edu/otdcapstonessummer2022/1009/thumbnail.jp

Splitting fields and general differential Galois theory

An algebraic technique is presented that does not use results of model theory and makes it possible to construct a general Galois theory of arbitrary nonlinear systems of partial differential equations. The algebraic technique is based on the search for prime differential ideals of special form in tensor products of differential rings. The main results demonstrating the work of the technique obtained are the theorem on the constructedness of the differential closure and the general theorem on the Galois correspondence for normal extensions..Comment: 33 pages, this version coincides with the published on

Assessments of Composite and Discrete Sampling Approaches for Water Quality Monitoring

peer-reviewedAchieving an operational compromise between spatial coverage and temporal resolution in national scale river water quality monitoring is a major challenge for regulatory authorities, particularly where chemical concentrations are hydrologically dependent. The efficacy of flow-weighted composite sampling (FWCS) approaches for total phosphorus (TP) sampling (n = 26–52 analysed samples per year), previously applied in monitoring programmes in Norway, Sweden and Denmark, and which account for low to high flow discharges, was assessed by repeated simulated sampling on high resolution TP data. These data were collected in three research catchments in Ireland over the period 2010–13 covering a base-flow index range of 0.38 to 0.69. Comparisons of load estimates were also made with discrete (set time interval) daily and sub-daily sampling approaches (n = 365 to >1200 analysed samples per year). For all years and all sites a proxy of the Norwegian sampling approach, which is based on re-forecasting discharge for each 2-week deployment, proved most stable (median TP load estimates of 87–98%). Danish and Swedish approaches, using long-term flow records to set a flow constant, were only slightly less effective (median load estimates of 64–102% and 80–96%, respectively). Though TP load estimates over repeated iterations were more accurate using the discrete approaches, particularly the 24/7 approach (one sample every 7 h in a 24 bottle sampler - median % load estimates of 93–100%), composite load estimates were more stable, due to the integration of multiple small samples (n = 100–588) over a deployment

State of Ohio\u27s Objections to Proposed Pretrial Order

Contains the State of Ohio’s objections to Plaintiff’s pretrial order. The objections are numbered and include a short explanation of each legal issue

Defendant\u27s Response to Plaintiff\u27s Motion to Limit Discovery & State of Ohio\u27s Objections to Proposed Pretrial Order

The State of Ohio’s response to the Estate of Sam Sheppard’s Motion to Limit Discovery. This motion asserts that the State should be given adequate time for discovery. The State harshly accuses the plaintiff’s counsel of confusing the civil matter with the reopening of a criminal investigation. The matters discussed in the motion include the Eberling blood sample, evidence inventoried at the coroner’s office, witness Kathy Collins, Dr. Mohammad Tahir’s DNA testing results, and the FBI Behavioral Science Unit