Vascular access type and prognosis in elderly hemodialysis patients: a propensity-score-matched study.

Background: To compare the impact of tunneled cuffed catheters (TCCs) and arteriovenous fistulas (AVFs) on outcomes in elderly hemodialysis (HD) patients.

Methods: A retrospective matched cohort study was performed. Propensity score matching (PSM) was applied to balance the baseline conditions, and we compared all-cause mortality, major adverse cardiovascular and cerebrovascular events (MACCEs), hospitalization, and infection rates between AVF and TCC patients ≥70 years old.

Advanced tubal pregnancy at 34 weeks with eclampsia and HELLP syndrome: a case report and literature re.

Background: Tubal ectopic pregnancies in the late stages of pregnancy are uncommon, and reports on their complications are scarce. We present the case of a woman who had a tubal ectopic pregnancy at around 34 weeks and developed severe pre-eclampsia complications.

Case: A 27-year-old woman presented to our hospital several times with vomiting and convulsions.

Case report: Acute ischemic stroke caused by intracranial artery dissection in a patient with skull fractures.

The intracranial artery dissection (IAD) is an uncommon but life-threatening disease. The IAD would develop a significant cerebral infarction due to unrecognized contrecoup brain injury. We report a 53-year-old man fell to develop blunt cerebrovascular injuries (BCVIs) more than 2 months ago.

Pharmacotherapies for Central Post-Stroke Pain: A Systematic Review and Network Meta-Analysis.

Background: Central post-stroke pain (CPSP) is a common condition. Several pharmacotherapies have been applied in practice. However, the comparative effectiveness among these pharmacotherapies is unknown.

Chest pain caused by left coronary artery spasm in a patient with anomalous origin of right coronary artery.

Anomalous origin of coronary artery is rare and important reason of chest pain, syncope, and sudden death in young and middle-aged patients. This case reported a patient with interarterial anomalous right coronary artery and chest pain, which was confirmed to be the result of severe vasospasm of the proximal left anterior descending artery. The patient had reoccurred spontaneous chest pain and the dynamic ST segment and T wave changes at anterior walls.

NiWO Microflowers on Multi-Walled Carbon Nanotubes for High-Performance NH Detection.

NiWO microflowers with a large surface area up to 79.77 m·g are synthesized in situ via a facile coprecipitation method. The NiWO microflowers are further decorated with multi-walled carbon nanotubes (MWCNTs) and assembled to form composites for NH detection.

[Value of a new predictive model in evaluating short-term prognosis of patients with hepatitis B virus related acute-on-chronic liver failure].

Objective: To establish a predictive model and investigate its value in evaluating short-term prognosis of patients with hepatitis B virus related acute-on-chronic liver failure (HBV-ACLF).

Methods: Patients with HBV-ACLF admitted to Tianjin Second People's Hospital and Beijing Youan Hospital, Capital Medical University from May 2015 to October 2018 were enrolled. The data of gender, age, laboratory markers at admission, model for end-stage liver disease (MELD) score and clinical complications were collected for analysis.

Effect of Jinhua Qinggan granules on novel coronavirus pneumonia in patients.

Objective: To evaluate the effectiveness and safety of Jinhua Qinggan granules in the treatment of patients with novel coronavirus pneumonia (COVID-19).

Methods: Eighty cases of COVID-19 diagnosed from January 24 to February 17, 2020 in Beijing YouAn Hospital Affiliated to Capital Medical University were retrospectively analyzed. All 80 patients received symptomatic and supportive treatment.

Organophosphate flame retardants in total suspended particulates from an urban area of zhengzhou, China: Temporal variations, potential affecting factors, and health risk assessment.

Organophosphate esters (OPEs) are widely used as flame retardants and plasticizers in industry and daily life, but the partition of OPEs to particles is still unclear because of the wide range of their physicochemical properties. In this study, six target OPEs with different vapor pressures (log P) were measured from 30 total suspended particulate (TSP) samples collected from an urban area of Zhengzhou from June to November in 2018. The total concentration of OPEs ranged from 0.

Qingchangligan formula alleviates acute liver injury by attenuating extracellular histone-associated inflammation.

Qingchangligan formula (QCLGF) is a traditional Chinese medicine that has exhibited remarkable clinical efficacy for patients with acute-on-chronic liver failure (ACLF). However, the hepatoprotective mechanisms of QCLGF are not completely understood. Extracellular histones were recently identified as the novel inflammatory mediators involved in the pathogenesis of acute liver injury.

Value-added conversion of waste cooking oil and post-consumer PET bottles into biodiesel and polyurethane foams.

A sustainable process of value-added utilization of wastes including waste cooking oil (WCO) and post-consumer PET bottles for the production of biodiesel and polyurethane (PU) foams was developed. WCO collected from campus cafeteria was firstly converted into biodiesel, which can be used as vehicle fuel. Then crude glycerol (CG), a byproduct of the above biodiesel process, was incorporated into the glycolysis process of post-consumer PET bottles collected from campus to produce polyols.

Value-added processing of crude glycerol into chemicals and polymers.

Crude glycerol is a low-value byproduct which is primarily obtained from the biodiesel production process. Its composition is significantly different from that of pure glycerol. Crude glycerol usually contains various impurities, such as water, methanol, soap, fatty acids, and fatty acid methyl esters.

Polyols and polyurethanes from the liquefaction of lignocellulosic biomass.

Polyurethanes (PUs), produced from the condensation polymerizations between polyols and isocyanates, are one of the most versatile polymer families. Currently, both polyols and isocyanates are largely petroleum derived. Recently, there have been extensive research interests in developing bio-based polyols and PUs from renewable resources.

Thermochemical conversion of crude glycerol to biopolyols for the production of polyurethane foams.

This study aimed to produce biopolyols from crude glycerol via a novel thermochemical conversion process. The effect of operational parameters, including sulfuric acid loading and reaction temperature and time, on the properties of the produced biopolyols was investigated. Biopolyols produced under preferred reaction conditions of 200°C, 90 min, and 3% sulfuric acid loading showed a hydroxyl number of around 481 mg KOH/g, an acid number of around 5mg KOH/g, and a viscosity of around 25.

Characterization of crude glycerol from biodiesel plants.

Characterization of crude glycerol is very important to its value-added conversion. In this study, the physical and chemical properties of five biodiesel-derived crude glycerol samples were determined. Three methods, including iodometric-periodic acid method, high performance liquid chromatography (HPLC), and gas chromatography (GC), were shown to be suitable for the determination of glycerol content in crude glycerol.

A low prevalence of H pylori and endoscopic findings in HIV-positive Chinese patients with gastrointestinal symptoms.

Aim: To compare the prevalence of H pylori infection, peptic ulcer, cytomegalovirus (CMV) infection and Candida esophagitis in human immunodeficiency virus (HIV)-positive and HIV-negative patients, and evaluate the impact of CD4 lymphocyte on H pylori and opportunistic infections.

Methods: A total of 151 patients (122 HIV-positive and 29 HIV-negative) with gastrointestinal symptoms were examined by upper endoscopy and biopsy. Samples were assessed to determine the prevalence of H pylori infection, CMV, candida esophagitis and histologic chronic gastritis.

A zwitterion of 1,5-bis(2-hydroxybenzamido)-3-azapentane: a two-dimensional hydrogen-bonding network involving dimers.

The title compound, 2-{N-[2-(2-hydroxybenzamido)ethylammonioethyl]aminocarbonyl}phenolate, C18H21N3O4, crystallizes in a zwitterionic form as a result of intermolecular proton transfer and possesses a negatively charged phenolate group and a protonated amino group. The 2-hydroxybenzamide and 2-(aminocarbonyl)phenolate moieties attached to the two ends of the C-C-N-C-C backbone adopt a cis conformation in relation to this backbone. All N- and O-bound H atoms are involved in hydrogen-bond formation; the zwitterions are first linked into head-to-tail dimers, which are further organized into a two-dimensional network parallel to the crystallographic bc plane.

[Clinical analysis of arrthythmogenic right ventricular cardiomyopathy].

Objective: To investigate the clinical features of arrthythmogenic right ventricular cardiomyopathy (ARVC), and to evaluate the diagnosis of ARVC.

Methods: Twenty-three cases of ARVC underwent ECG, chest x-ray, Holter, transesophageal atrial pacing (TEAP) and intracardiac electrophysiological examination.

Results: A syncope attack occurred; the percentage of frequent ventricular premature beats was 95.