Emission characteristics, environmental impact, and health risk assessment of volatile organic compounds (VOCs) during manicure processes.

In recent years, the nail industry has been widely popular in China, and the use of nail care products has also significantly increased. Due to its high content of volatile solvents, the released VOCs not only have a negative impact on indoor air quality but also pose a health threat to nail salon workers who are highly exposed to such environments. The objectives of this research were to characterize VOCs emissions from detailed manicure processes and to evaluate the impact on the environment and health risks.

Pb speciation and elemental distribution in leeks by micro X-ray fluorescence and X-ray absorption near-edge structure.

Vegetables are crucial to a human diet as they supply the body with essential vitamins, minerals, etc. Heavy metals that accumulate in plants consequently enter the food chain and endanger people's health. Studying the spatial distribution and chemical forms of elements in plant/vegetable tissues is vital to comprehending the potential interactions between elements and detoxification mechanisms.

Improvement of Qilin pills on male reproductive function in tripterygium glycoside-induced oligoasthenospermia in rats.

This study established an oligoasthenospermic rat model using tripterygium glycosides (TGs) and investigated the mechanism by which Qilin pills (QLPs) ameliorate reproductive hypofunction. Thirty-two male Sprague Dawley rats were allocated to four equal-sized groups: (1) the control group received continuous physiological levels of saline; (2) the oligoasthenospermia model group was induced with TGs by daily intragastric administration for 28 days; (3 and 4) oligoasthenospermic rats were treated intragastrically with low dose (1.62 g kg  d ) and high dose (3.

Clinical efficacy of acetylcysteine combined with tetrandrine tablets in the treatment of silicosis and the effect on serum IL-6 and TNF-α.

Clinical efficacy of acetylcysteine combined with tetrandrine tablets in the treatment of silicosis and the effect on serum levels of interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) in patients with silicosis was investigated. One hundred and ninety-six patients with silicosis admitted to Qingdao Central Hospital, aged 40 to 70 years, were collected by prospective analysis. The patients were divided into two groups according to the different methods of treatment.

The association of serum and vitreous adropin concentrations with diabetic retinopathy.

Objective: Adropin, a newly identified regulatory protein encoded by Enho gene, is correlated with insulin sensitivity and diabetes. The aim of this study is to determine whether serum and vitreous adropin concentrations are correlated with the presence of diabetic retinopathy.

Methods: A population of 165 patients with type 2 diabetes mellitus (52 without diabetic retinopathy, 69 with non-proliferative diabetic retinopathy and 44 patients with proliferative diabetic retinopathy) was enrolled in this study.

Subcellular Distribution and Chemical Forms of Pb in Corn: Strategies Underlying Tolerance in Pb Stress.

Studying the accumulation position and forms of heavy metals (HMs) in organisms and cells is helpful to understand the transport process and detoxification mechanism. As typical HMs, lead (Pb) subcellular content, localization, and speciation of corn subcellular fractions were studied by a series of technologies, including transmission electron microscopy, inductively coupled plasma mass spectrometry, and X-ray absorption near edge structure. The results revealed that the electrodense granules of Pb were localized in the cell wall, intercellular space, and plasma membranes.

Effects of nanotoxicity on female reproductivity and fetal development in animal models.

The extensive application of nanomaterials in industry, medicine and consumer products has raised concerns about their potential toxicity. The female population is particularly vulnerable and deserves special attention because toxicity in this group may impact both female reproductivity and fetal development. Mouse and zebrafish models each have their own unique features and studies using these models to examine the potential toxicity of various nanoparticles are compared and summarized in this review.

Coronary heart disease diagnosis bases on the change of different parts in treadmill exercise test ECG.

Summarize the value of the change of different parts in treadmill exercise test (TET) ECG to coronary heart disease (CHD) diagnosis. Four hundred and forty-five cases have been included in this investigation, which stayed in our hospital from January of 2006 to March of 2011 and underwent TET and coronary arteriography (CAG). The change of different parts in TET ECG in these patients had been retrospective summarized to determine its diagnosis value to CHD.

Elderly patients and coronary heart disease on response to treadmill exercise test.

To study the response of the cardiovascular system, to exercise tolerance in-patients over 75 years old with coronary heart disease (CHD), and to evaluate the significance of the parameters of the treadmill exercise test (TET). 110 patients received TET and coronary artery angiography. They were divided into two groups: the elderly patients group included 50 patients over 75 years old, and the control group included 60 patients under 60 years old.

Chronic stress promoted the growth of ovarian carcinoma via increasing serum levels of norepinephrine and interleukin-10 and altering nm23 and NDRG1 expression in tumor tissues in nude mice.

The current study aimed to examine the effects and underlying mechanisms of chronic psychological stress on the growth of ovarian carcinoma. Human ovarian carcinoma cells SKOV-3 were subcutaneously inoculated into nude mice to establish an ectopic mouse model. The animals were experimentally stressed 6 h daily for a total of 42 days with a physical restraint system.

Experimental research on the in vitro antitumor effects of Crataegus sanguinea.

Crataegus sanguinea is a wild plant, which has been widely grown in the north and south of the Tianshan mountains in Xinjiang. In order to explore their anti-cancer properties, edible wild plants from Xinjiang have been tested for their antitumor properties. We used Ames tests, mouse bone marrow polychromatic erythrocytes micronucleus tests, and tumor cells cultured in vitro to study the anti-mutagenic and anti-tumor effects of C.

[XANES study of lead speciation in duckweed].

Qixiashan lead-zinc mine of Nanjing was one of the largest lead zinc deposits in East China Its exploitation has been over 50 years, and the environmental pollution has also been increasing. The lead concentration in the local environment was high, but lead migration and toxic mechanism has not been clear. Therefore, biogeochemistry research of the lead zinc mine was carried out.

Effects of ibutilide on canine cardiac pacing threshold and on induction rates of atrial fibrillation.

This study aims to observe the effects of ibutilide on canine cardiac pacing threshold and on induction rates of atrial fibrillation. Eighteen mongrel dogs were anesthetized and administrated with ibutilide. The pacing thresholds and induction rates of atrial fibrillation were measured with and without ibutilide (10-min infusion dose was 0.

[In vivo determination of Pb in human bone by using X-ray fluorescence analysis].

The data of in vivo XRF Pb in human bone were obtained within China by using the in vivo XRF set. The K series X-ray of Pb were applied to determine the in vivo Pb concentration in tibia and calcaneus among Chinese mainland residents. For general population, the weighted average of Pb in bone was 0.

[Determination of trace nickel in bi-based superconductor powder by inductively coupled plasma atomic emission spectroscopy after separation with anion exchange resin and extraction with methylbenzene].

A new method for the determination of trace nickel in superconductor powder by ICP-AES was proposed. The instrument parameters were optimized, and the matrix effects as well as the method of eliminating interferences were also studied systemically. The results showed that matrix interference in the superconductor powder was serious when the amount of matrix increased, and the repeatability as well as the accuracy was poor, so it was necessary to used separation and preconcentration to improve the accuracy and precision.

Effects of ibutilide on inhibiting heart rate and rapidly terminating atrial flutter in canine.

Ibutilide is a newer class-III antiarrhythmic agent approved for clinical use. We sought to investigate its electrophysiological effects in canines and also the underlying mechanism of conversion of atrial flutter (AFL). For this purpose, 15 male mongrel dogs were anesthetized, intubated with tracheal tube, and heart was exposed and connected to electrodes.

Identification of obstructive sleep apnea syndrome by ambulatory electrocardiography: clinical evaluation of time-domain and frequency-domain analyses of heart rate variability in Chinese patients.

The application of ambulatory electrocardiography to identify obstructive sleep apnea syndrome (OSAS) patients was evaluated using time-domain and frequency-domain analyses of heart rate variability (HRV). For this, overnight sleep pattern was investigated in 95 individuals (48 OSAS(+) patients and 47 OSAS(-) controls) by polysomnography and 24-h ambulatory electrocardiography. Apnea scores were calculated using two different HRV analyses.

[The study of inhibiting heart rate and rapidly terminating atrial flutter of ibutilide on canine].

Objective: To observe the electrophysiological effects of ibutilide on canine and to explore the potential mechanisms of ibutilide on terminating atrial flutter.

Methods: Eighteen mongrel dogs were anesthetized and intubated. The heart was exposed through thoracotomy for electrodes implantation.

Magnetic resonance spectroscopy on hepatocellular carcinoma after transcatheter arterial chemoembolization.

Background And Objective: Proton magnetic resonance spectroscopy (MRS) of the liver in vivo is in experimental phase. MRS observation on liver cancer after transcatheter arterial chemoembolization (TACE) has seldom been reported. This study was to investigate the value of MRS in assessing the metabolic changes of hepatocellular carcinoma (HCC) after TACE.

Soluble c-Met receptors inhibit phosphorylation of c-Met and growth of hepatocyte growth factor: c-Met-dependent tumors in animal models.

c-Met is a receptor tyrosine kinase frequently overexpressed or amplified in many types of human cancers. Hepatocyte growth factor (HGF, also known as scatter factor) is the only known ligand for c-Met. In this study, soluble human and murine c-Met receptor-Fc fusion proteins were generated and were shown to bind to human and murine HGF as measured by fluorescence-activated cell sorting and surface plasmon resonance (Biacore) assays.

Vagal effects on the occurrence of focal atrial fibrillation originating from the pulmonary veins.

Background: There is evidence that the autonomic nervous system may be involved in the mechanism of focal atrial fibrillation (AF), so the present study investigated the effects of the parasympathetic nervous system on the occurrence of focal AF originating from the pulmonary veins (PVs).

Methods And Results: In 10 mongrel dogs, programmed stimulation and local burst stimulation (12.5 Hz, impulse duration 0.

[The relationship of paroxysmal atrial fibrillation and regional sympathetic innervations in the atria and pulmonary veins: experiment with dogs].

Objective: To test the hypothesis that regional sympathetic innervation in the atria and pulmonary veins are correlated with atrial fibrillation (AF).

Methods: Sixteen adult mongrel dogs underwent thoracotomy under general anesthesia. Bilateral cervical vagal trunks were decentralized.

[Vagal effects on inducibility of atrial fibrillation at different sites of pulmonary veins after autonomic denervation].

Objective: To investigate the vagal effects on the inducibility of atrial fibrillation (AF) at different sites of pulmonary vein after autonomic denervation.

Methods: The bilateral cervical vagal trunks of 10 male mongrel dogs were isolated and decentralized. The ansae subclaviae were exposed, ligated, and cut.

Clinical comparison of ibutilide and propafenone for converting atrial flutter.

Objective: To evaluate the efficacy and safety of intravenous ibutilide and propafenone for immediate treatment of atrial flutter.

Methods: Forty patients with atrial flutter with an arrhythmia duration of three hours to 90 days were randomized to receive up to two 10-minute infusions of ibutilide (1 and 1 mg) or propafenone (70 and 70 mg) with a 10-minute interval.

Results: Ibutilide was superior to propafenone for treating atrial flutter (90% vs.

Circle quorum system-based non-stop network service model.

Rapid developments in network systems of business service have resulted in more reliance on distributed computing, typified by "subscriber/push" architectures. Unfortunately, frequent and unexpectable network failures were routine, and downtime was not in hours, but in days. High availability has become the most important factor decreasing business risk and improving Quality of Service.