Industrial hydrogen fuel typically comprises about 5 ppm of hydrogen sulfide (HS), incurring irreversible poisoning of platinum on carbon (Pt/C) catalyst in fuel cells. For realistic use, HS should be removed to below 4 ppb; this process, however, is challenging and costly. We describe an exceptional HS-tolerant yet high-performing hydrogen oxidation reaction (HOR) catalyst prepared by chemical grafting of chromic oxide (CrO) onto a molybdenum-nickel (MoNi) alloy.
View Article and Find Full Text PDFBackground: The accuracy of low birth weight (LBW) and small for gestational age (SGA) in administrative healthcare records is crucial for perinatal studies but has few validity studies.
Methods: Using 1999-2010 MAX linked to birth certificates (BC), we identified mother-infant dyads (≥30 days enrollment after delivery, with valid gestational age (GA) and birth weight (BW)). LBW and SGA were identified based on ICD-9-CM codes.
Background: Abemaciclib was newly approved for hormone receptor-positive (HR+), human epidermal growth factor receptor 2-negative (HER2-) high-risk early breast cancer (EBC). Clinical guidelines recommended abemaciclib as the first-line treatment for HR+/ HER2- EBC (early use) or HR+/ HER2- metastatic breast cancer (MBC) (delayed use).
Objective: To compare the cost-effectiveness of early vs delayed use of abemaciclib for treatment of HR+/HER2- high-risk EBC.
Scarce and expensive iridium oxide is still the cornerstone catalyst of polymer-electrolyte membrane electrolyzers for green hydrogen production because of its exceptional stability under industrially relevant oxygen evolution reaction (OER) conditions. Earth-abundant transition metal oxides used for this task, however, show poor long-term stability. We demonstrate here the use of nitrogen-doped cobalt oxide as an effective iridium substitute.
View Article and Find Full Text PDFBackground: Cytochrome P450 2C19 (CYP2C19) intermediate and poor metabolizer patients exhibit diminished clopidogrel clinical effectiveness after percutaneous coronary intervention (PCI). However, outcome studies to date have lacked racial diversity. Thus, the impact of genotype on cardiovascular outcomes in patients treated with clopidogrel who identify as Black or African American remains unclear.
View Article and Find Full Text PDFReduction of carbon dioxide (CO) by renewable electricity to produce multicarbon chemicals, such as ethylene (CH), continues to be a challenge because of insufficient Faradaic efficiency, low production rates, and complex mechanistic pathways. Here, we report that the rate-determining steps (RDS) on common copper (Cu) surfaces diverge in CO electroreduction, leading to distinct catalytic performances. Through a combination of experimental and computational studies, we reveal that C─C bond-making is the RDS on Cu(100), whereas the protonation of *CO with adsorbed water becomes rate-limiting on Cu(111) with a higher energy barrier.
View Article and Find Full Text PDFAnion-exchange membrane fuel cells provide the possibility to use platinum group metal-free catalysts, but the anodic hydrogen oxidation reaction (HOR) suffers from sluggish kinetics and its source is still debated. Here, over nickel-tungsten (Ni-W) alloy catalysts, we show that the Ni : W ratio greatly governs the HOR performance in alkaline electrolyte. Experimental and theoretical studies unravel that alloying with W can tune the unpaired electrons in Ni, tailoring the potential of zero charge and the catalytic surface to favor hydroxyl adsorption (OH).
View Article and Find Full Text PDFBackground: An ABCD-GENE (age, body mass index, chronic kidney disease, diabetes, and CYP2C19 genetic variants) score ≥10 predicts reduced clopidogrel effectiveness, but its association with response to alternative therapy remains unclear.
Objectives: The aim of this study was to evaluate the association between ABCD-GENE score and the effectiveness of clopidogrel vs alternative P2Y inhibitor (prasugrel or ticagrelor) therapy after percutaneous coronary intervention (PCI).
Methods: A total of 4,335 patients who underwent PCI, CYP2C19 genotyping, and P2Y inhibitor treatment were included.
Hua Xi Kou Qiang Yi Xue Za Zhi
December 2023
Facial nerve training can prevent facial expression muscle atrophy and promote the recovery of facial para-lysis in patients with peripheral facial paralysis. However, there is still a lack of specific and unified technical standards for facial nerve training, which results in a variety of clinical training methods and uneven levels. In order to standardize the application of facial nerve function training technology for nursing staff, the study convened relevant domestic experts, based on evidence-based combination with the disease characteristics of peripheral facial paralysis and expert clinical experience, conducted in-depth interviews with experts, expert correspondence and expert meetings, and finally formulated the expert consensus on facial nerve function training in patients with peripheral facial paralysis.
View Article and Find Full Text PDFObjective: Patients with severe hypoglycemia (SH) or diabetic ketoacidosis (DKA) experience high hospital readmission after being discharged. Cognitive impairment (CI) may further increase the risk, especially in those experiencing an interruption of medical care after discharge. This study examined the effect modification role of postdischarge care (PDC) on CI-associated readmission risk among U.
View Article and Find Full Text PDFDepression, commonly treated with antidepressants, is associated with an increased risk of dementia, especially in older adults. However, the association between antidepressant use and dementia risk is unclear. We searched for randomized controlled trials and observational studies from PubMed, Embase, and Cochrane on 1 February 2022, restricting to full texts in English.
View Article and Find Full Text PDFConverting hydrogen chemical energy into electrical energy by fuel cells offers high efficiencies and environmental advantages, but ultrapure hydrogen (over 99.97%) is required; otherwise, the electrode catalysts, typically platinum on carbon (Pt/C), will be poisoned by impurity gases such as ammonia (NH). Here we demonstrate remarkable NH resistivity over a nickel-molybdenum alloy (MoNi) modulated by chromium (Cr) dopants.
View Article and Find Full Text PDFImportance: A platelet ADP P2Y12 receptor (P2Y12) inhibitor plus aspirin is standard therapy for patients undergoing percutaneous coronary intervention (PCI) for acute coronary syndrome (ACS). Compared with clopidogrel, prasugrel and ticagrelor are associated with superior antiatherothrombotic effects but increased bleeding risk; with recent guideline updates, it is important to describe current treatment patterns and the role of bleeding risk in treatment choice.
Objective: To describe secular trends and determinants of initial P2Y12 inhibitor choice and switching, including deescalation (switch from prasugrel or ticagrelor to clopidogrel).
Adrenocortical oncocytic carcinoma is a rare type of adrenocortical tumor. Its clinical characteristics and biological behavior need to be further evaluated after the accumulation of cases. Here we report a case of adrenocortical oncocytic carcinoma in an Asian male with scoliosis.
View Article and Find Full Text PDFBackground: To inform policy and implementation that can enhance prevention and improve tuberculosis (TB) care cascade outcomes, this review aimed to summarize the impact of various interventions on care cascade outcomes for active TB.
Methods And Findings: In this systematic review and meta-analysis, we retrieved English articles with comparator arms (like randomized controlled trials (RCTs) and before and after intervention studies) that evaluated TB interventions published from January 1970 to September 30, 2022, from Embase, CINAHL, PubMed, and the Cochrane library. Commentaries, qualitative studies, conference abstracts, studies without standard of care comparator arms, and studies that did not report quantitative results for TB care cascade outcomes were excluded.
Platinum on carbon (Pt/C) catalyst is commercially adopted in fuel cells but it undergoes formidable active-site poisoning by carbon monoxide (CO). In particular, given the sluggish kinetics of hydrogen oxidation reaction (HOR) in anion-exchange membrane fuel cell (AEMFC), the issues of Pt poisoning and slow rate would combine mutually, notably worsening the device performances. Here we overcome these challenges through incorporating cobalt (Co) into molybdenum-nickel alloy (MoNi ), termed Co-MoNi , which not only shows superior HOR activity over the Pt/C catalyst in alkali, but more intriguingly exhibits excellent CO tolerance with only small activity decay after 10 000 cycles in the presence of 500 parts per million (ppm) CO.
View Article and Find Full Text PDFIntroduction: During the COVID-19 pandemic, people living with HIV (PLWH) were considered to be at risk of worse COVID-19 outcomes once infected. However, the existing evidence is inconsistent. This systematic review and meta-analysis aimed to compare the risk of SARS-CoV-2 infection, severe COVID-19 symptoms, and mortality among PLWH and patients without HIV.
View Article and Find Full Text PDFBackground: Social network approaches to testing allow individuals (indexes) to distribute tests to social networks (alters). This quasi-experimental study compared two social network-based testing strategies in promoting human immunodeficiency virus (HIV) testing among Chinese gay, bisexual, and other men who have sex with men (GBMSM).
Methods: GBMSM aged ≥18years were recruited from Guangzhou, China.
Patient Prefer Adherence
April 2022
Background: Due to globalization, an increasing number of international visitors comes to China. The needs of their medical care are understudied, which can cause low patient satisfaction and lead to poor clinical outcomes for the clients. To meet those international clients' medical care needs, hospitals in China are seeking strategies to improve services.
View Article and Find Full Text PDFIntraepithelial neoplasia is a special type of squamous cell carcinoma occurring in the skin epidermis. The incidence of penile intraepithelial neoplasia in Asian males is rare. We report the clinical characteristics and treatment process of a case of penile intraepithelial neoplasia in a Chinese man.
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