Thermodynamic insights into selenium oxyanion removal from synthetic flue gas desulfurization wastewater with temperature-swing solvent extraction.

Temperature-swing solvent extraction (TSSE) is a cost-effective, simple, versatile, and industry-ready technology platform capable of desalinating hypersaline brines toward zero liquid discharge. In this work, we demonstrate the potential of TSSE in the effective removal of selenium oxyanions and traces of mercury with the coexistence of high contents of chloride and sulfate often encountered in flue gas desulfurization wastewater streams. We compare the rejection performance of the two common solvents broadly used for TSSE, decanoic acid (DA) and diisopropylamine (DPA), and correlate those with the solvent physicochemical properties (e.g., dielectric constant, polarity, molecular bulkiness, and hydrophobicity) and ionic properties (e.g., hydrated radii and H-bonding). The results show that TSSE can remove >99.5% of selenium oxyanions and 96%-99.6% of mercury traces coexisting with sulfate (at a sixfold Se concentration) and chloride (at a 400-fold Se concentration) in a synthetic wastewater stream. Compared to diisopropylamine, decanoic acid is more effective in rejecting ions for all cases, ranging from a simple binary system to more complex multicomponent systems with highly varied ionic concentrations. Furthermore, the H-bonding interaction with water and the hydrated radii of the oxyanions (i.e., selenate vs. selenite) along with the hindrance effects caused by the molecular bulkiness and hydrophobicity (or lipophilicity) of the solvents play important roles in the favorable rejection of TSSE. This study shows that TSSE might provide a technological solution with a high deionization potential for the industry in complying with the Environmental Protection Agency regulations for discharge streams from coal-fired power facilities.

Clinical features and outcome of retinoblastoma at the Vietnam National Cancer Hospital.

OBJECTIVES: To characterize the clinical features, treatment, and outcome of children diagnosed with retinoblastoma (RB) at Vietnam National Cancer Hospital. METHODS: The study enrolled all RB patients newly diagnosed at Vietnam National Cancer Hospital from January 2018 to December 2022. The primary endpoint was overall survival (OS) and the eye salvage rate. RESULTS: In total, 139 patients were enrolled, 51.8% patients were male. Median age was 18.9 months. Most patients presented with leukocoria (63.3%), followed by strabismus (14.4%), and 43.9% had bilateral disease. Of 200 eyes, 129 (64.5%) were classified as group E. Extraocular extension was noted in 10 of 139 patients (7.2%). About one-third of the patients lived more than 300 kilometers (km) away from these hospitals, and 17.3% of the patients belonged to minority groups, both of which were dominated by group E and extraocular or high-risk eyes at the time of consultation. Primary enucleation was done for 57 eyes (28.5%), and 51 of 61 patients (83.6%) received eye salvage therapy in bilateral RB group. At study closure, 127 children were alive at the last follow-up, 12 cases were confirmed dead. The 5-year OS and progression-free survival (PFS) rates were 90.3% and 85.9%, respectively. In particular, ethnic minority, distance to hospital more than 150 km, and extraocular disease were significantly associated with higher mortality among children with RB treated in Vietnam National Cancer Hospital. CONCLUSIONS: There is a need to support for screening RB with early symptoms in grassroots medical facilities and raise awareness among patients' families through health education programs. Besides, caring and supporting treatment for patients from the ethnic minority and who live far from hospitals are also extremely necessary.

Regretful pleasure: Toward an understanding of flow cost in media use.

Flow (state of intense focus) during media use has been largely considered a desirable experience, with technologies developed to maximize the chance of encountering flow in computer-mediated environments. However, the total absorption of attention due to flow could be problematic in contexts where the user has multiple predetermined goals, and engaging with the flow-inducing media could cost them resources that may be otherwise devoted to other goals. When flow imposes a cost on the user's goal performance, it may also reduce their post-experience gratification with the flow-inducing media. The present study proposes a novel theoretical framework to begin understanding the potential cost of flow in media use with supporting evidence from two survey and vignette studies (N = 235 and N = 245). Its findings will extend human-computer interaction research by highlighting the double-edged impact that flow might have on media users' larger goal performance and downstream well-being.

MOXAIC: A classification of major maxillofacial wounds, concerning 310 cases.

INTRODUCTION: Although classification for facial fractures have been extensively described in the literature, corresponding systems for major maxillofacial wounds (MMW) are few. We would like to present MOXAIC: a new classification system for MMW. MATERIAL AND METHODS: A retrospective study of 310 patients with MMW who underwent emergency operation between January 2005 and December 2016. MMW was defined as a facial wound longer than 10 cm, which includes damage to the craniofacial bone or other important facial structures such as the carotid arteries, facial nerves, parotid gland, Stensen's duct, or the eye. All the patients were followed at least 36 months. RESULT: Based on the shape of the wound, the severity, and the mechanism of injury we were able to classify the MMW into five types: O, X, A, I, C. For each wound type we then looked at the treatment required and the outcome, objectively classified as good, satisfactory, or poor, concerning anatomical correction, aesthetics, and function. + Type OCircumferential wound: 81.6% result good. + Type X-Oblique wound: only 48.1% good, despite initial multidisciplinary approach. + Type A-Transverse facial wound: 78.1% good. + Type I-Direct wound: Immediate airway management and hemorrhage control are important. 48.8% good. + Type CCut wound: 88.1% good. The above classification was named MOXAIC which is a mnemonic of 'Maxillofacial' and the five wound types: O, X, A, I, C. CONCLUSION: This classification is highly reproducible, easy to use, and allows quick treatment work up and prognosis. However, this classification requires further specialist review and study.

Antimicrobial Resistance Pilot Surveillance of Pigs and Chickens in Vietnam, 2017-2019.

Antimicrobial use (AMU) and antimicrobial resistance (AMR) are a growing public health and economic threat in Vietnam. We conducted a pilot surveillance programme in five provinces of Vietnam, two in the south and three in the north, to identify antimicrobial resistance (AMR) in rectal swab samples from pigs and fecal samples from chickens at slaughter points during three different points in time from 2017 to 2019. Escherichia coli (E. coli) and non-typhoidal Salmonella (NTS) isolates were tested for antimicrobial susceptibility using disk diffusion assay for 19 antimicrobial agents belonging to nine antimicrobial classes and Etest for colistin (polymyxin). Almost all E. coli (99%; 1029/1042) and NTS (96%; 208/216) isolates were resistant to at least one antimicrobial agent; 94% (981/1042) of E. coli and 89% (193/216) of NTS isolates were multidrug-resistant (MDR). Higher proportions of E. coli and NTS isolated from chickens were resistant to all antimicrobial classes than those isolates from pigs. There was a significantly higher proportion of MDR NTS isolates from the southern provinces of Ho Chi Minh City and Long An (p = 0.008). Although there were increasing trends of NTS in proportion of resistance to fluoroquinolone over the three surveillance rounds, there was a significant decreasing trend of NTS in proportion of resistance to polymyxin (p = 0.002). It is important to establish an annual AMR surveillance program for livestock in Vietnam to assess the impact of interventions, observe trends and drive decision making that ultimately contributes to reducing AMR public health threat.

Food parenting topics in social media posts: Development of a coding system, examination of frequency of food parenting concepts, and comparison across Reddit and Facebook.

This study presents development of a coding system to examine food parenting topics presented in posts on social media, and compared topics between two social media platforms (Facebook, Reddit). Publicly available social media posts were gathered from Facebook (2 groups) and Reddit (3 subreddits) and a coding system was developed based on the concept map of food parenting proposed by Vaughn et al. (2016). Based on the developed coding system, we coded posts into overarching food parenting practice constructs (coercive control: attempts to dominate, pressure or impose parents' will on child, structure: organization of child's environment to facilitate competence, autonomy support: supporting child's ability to self-regulate through allowing food choices, conversations about food, and a positive emotional climate) and recipes. We also coded posts dichotomously as including a question or advice-seeking. Differences in frequencies of food parenting constructs presented in posts on Facebook and Reddit were considered using chi-square tests of independence. Of the 2459 posts coded, 900 were related to food parenting (37%). In the subsample of 900, posts related to structure (43%) and recipes (40%) were the most frequent. Close to half of the posts (44%) included questions about food parenting. Frequency of food parenting topics in posts was related to social media platform, with coercive control and structure more frequently discussed on Reddit and recipes more commonly posted on Facebook. Results suggest that food parenting topics discuss on social media differ by platform, which can aid researchers and practitioners in targeting social media-based outreach to the topics of most interest for users. Findings give insight into the everyday food parenting topics and questions that parents and caregivers may be exposed to on social media. TAXONOMY: Development of Feeding; Parenting; Online Information Services.

Predictive value of quick Sepsis-Related Organ Failure Scores following sepsis-related Medical Emergency Team calls: a retrospective cohort study.

We conducted a cohort study of adult ward patients who had a Medical Emergency Team (MET) call triggered by confirmed or suspected sepsis in an Australian tertiary centre to assess the predictive utility of systemic inflammatory response syndrome (SIRS) and quick Sepsis-Related Organ Failure Assessment (qSOFA) scores for 28-day mortality over a 12-month period. Sepsis was the causative aetiology in 970 MET calls for 646 patients with a mean age of 68 years and median Charlson Comorbidity score (CCS) of 3.0. Four hundred and seven (63%) patients had microbiological identification of a causative organism with 35 (9%) demonstrating multi-drug resistance. The 28-day mortality rate was 22%. Independent risk factors for 28-day mortality included age (incidence rate ratio [IRR] 1.038; P <0.001) and CCS (IRR 1.102; P <0.001). qSOFA positive patients had a three-fold risk of 28 day mortality compared to those who were negative (IRR 3.15; P=0.02). Both the SIRS and qSOFA score had poor sensitivity (86% versus 62%, respectively) for mortality as a sole diagnostic tool and should be investigated as part of a multiparameter panel within a large prospective study.

Discovery of spin glass behavior in Ln2Fe4Sb5 (Ln = La-Nd and Sm).

Single crystals of Ln(2)Fe(4)Sb(5) (Ln = La-Nd and Sm) were grown from an inert Bi flux. Measurements of the single crystal X-ray diffraction revealed that these compounds crystallize in the tetragonal space group I4/mmm with lattice parameters of a ≈ 4 Å, c ≈ 26 Å, V ≈ 500 Å(3), and Z = 2. This crystal structure consists of alternating LnSb(8) square antiprisms and Fe-sublattices composed of nearly equilateral triangles of bonded Fe atoms. These compounds are metallic and display spin glass behavior, which originates from the magnetic interactions within the Fe-sublattice. Specific heat measurements are void of any sharp features that can be interpreted as contributions from phase transitions as is typical for spin glass systems. A large, approximately linear in temperature, contribution to the specific heat of La(2)Fe(4)Sb(5) is observed at low temperatures that we interpret as having a magnetic origin. Herein, we report the synthesis, structure, and physical properties of Ln(2)Fe(4)Sb(5) (Ln = La-Nd and Sm).

Synthesis, structure, magnetic and transport properties of LnFeSb3 (Ln = Pr, Nd, Sm, Gd, and Tb)--tuning of anisotropic long-range magnetic order as a function of Ln.

Single crystals of LnFeSb(3) (Ln = Pr, Nd, Sm, Gd, and Tb) have been grown from excess Sb flux. The crystal structure consists of (infinity)(2)[FeSb(2)] octahedra separated by layers of Ln atoms and nearly square planar nets of (infinity)(2)[Sb(2)]. These compounds are metallic and display anisotropic magnetic properties. Long-range antiferromagnetic order is observed in the Sm, Gd, and Tb samples when the magnetic field is applied along the crystallographic a-axis. Evidence of magnetic ordering in all the samples is observed for the field applied parallel to the layers. The magnetic properties are well-described by considering only the magnetic interactions between the Ln 4f moments, with no contribution from the Fe sublattice. Herein, we report the crystal growth, structure, magnetization, transport, and chemical stabilities of the title compounds.