Risk factors for life-threatening complications of head and neck space infections: A systematic review and meta-analysis.

Objective: The present systematic review was performed to identify risk factors associated with life-threatening complications of head and neck space infections (LCHNSI) within the included studies and assess the magnitude of their impact on patients.

Methods: We systematically searched PubMed, Web of Science, EmBase, Scopus and CNKI for articles that reported risk factors associated with life-threatening complications of head and neck space infections from inception to 14 December 2023. Only factors reported in at least three papers were considered in the meta-analysis.

Microscopic internal spermatic-inferior epigastric vein anastomosis for treating left varicocele.

Objective: To evaluate the clinical efficacy of microscopic internal spermatic-inferior epigastric vein anastomosis in the treatment of left varicocele and compare it with microscopic spermatic vein ligation for the same condition.

Methods: A retrospective analysis of 74 patients with left varicocele between July 2020 and July 2022 was performed. The patients were divided into two groups based on the surgical method used.

Body-mass index and obesity in infertile couples in southwest China.

To investigate body mass index (BMI) of infertile couples and analyze its related influencing factors in Southwest China, so as to prevent and control the obesity. We analyzed the data of a total number of 8877 infertile couples who received treatment in our assisted reproductive center from October 2012 to March 2022. The mean age and BMI of men and women were 33.

Retrieval of tropospheric ozone profiles using ground-based MAX-DOAS.

In recent years, surface ozone concentrations have increased in many cities in China. Ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) is a powerful technique for retrieving the profiles of tropospheric trace gases, such as NO, SO, and HCHO. However, since the difficulties in deducting the effects of stratospheric ozone, there are few studies on the retrieval of tropospheric ozone profiles using MAX-DOAS measurements.

Influence Factors of Sexual Intercourse Frequency in Infertile Couples without Sexual Dysfunction in Southwest China: A Retrospective Study.

Introduction: The aim of this study was to investigate the sexual intercourse frequency (SIF) of infertile couples without sexual dysfunction and analyze its related influencing factors.

Materials And Methods: We retrospectively analyzed the data of a total number of 4,923 infertile couples without sexual dysfunction who received treatment in our assisted reproductive center from October 2016 to October 2018. Both partners of couples were inquired about their information of demographic statistics, occupations, lifestyles, education backgrounds, psychological characteristics, and testostrone levels of male patients.

Novel compound heterozygous DNAAF2 mutations cause primary ciliary dyskinesia in a Han Chinese family.

Purpose: Primary ciliary dyskinesia (PCD), which commonly causes male infertility, is an inherited autosomal recessive disorder. This study aimed to investigate the clinical manifestations and screen mutations associated with the dynein axonemal assembly factor 2 (DNAAF2) gene in a Han Chinese family with PCD.

Methods: A three-generation family with PCD was recruited in this study.

Microsurgical gonadal-inferior epigastric vein anastomosis to treat the nutcracker phenomenon with left gonadal vein varices with reflux.

Objective: To evaluate the effectiveness and safety of microsurgical gonadal-inferior epigastric vein anastomosis for the treatment of the nutcracker phenomenon (NCP) associated with left gonadal vein varices with reflux.

Methods: Thirty-five patients with NCP associated with left gonadal vein varices with reflux diagnosed in our hospital from June 2016 to June 2018 were included. All patients underwent a shunt operation consisting of microsurgical gonadal-inferior epigastric vein anastomosis, and the patients were followed up for 1 year.

Cloning, expression, and characterization of a novel nitrilase, PaCNit, from Pannonibacter carbonis Q4.6.

Objective: Identification of a heavy metal ion-stimulated nitrilase with broad-spectrum substrate specificity.

Results: A novel nitrilase, PaCNit, was identified from Pannonibacter carbonis Q4.6 and its enzymatic properties were investigated.

Analysis of anomalous origin of coronary arteries by coronary angiography in Chinese patients with coronary artery disease.

With the development of coronary angiography for the diagnosis of coronary artery disease, its clinical significance in detecting coronary artery anomalies and evaluating the seriousness is attracting more attention. In the study we aimed to assess the prevalence of anomalous origin of coronary arteries in a Chinese population who underwent coronary angiography for coronary artery disease, and explore any patterns in the common variants and typical anomalies, especially the potentially serious ones. Patients who underwent coronary angiography from January 2013 to December 2016 in Fuwai Hospital were included.

Knockdown of FOXK1 Suppresses Proliferation, Migration, and Invasion in Prostate Cancer Cells.

Forkhead box K1 (FOXK1) is a member of the FOX transcription factor family and plays an important role in the development of several tumors. However, the role of FOXK1 in the progression of prostate cancer remains unknown. Thus, the objectives of this study were to detect the expression of FOXK1 in prostate cancer and to examine its role in prostate cancer cells.

Laparoscopic Radiofrequency Ablation Combined with Surgical Excision for Exophytic Renal Angiomyolipoma: A Novel Technique Based on Tumor Vasculature Features of Enhancing Renal Masses Toward Hilar Off-Clamping Nephron-Sparing Surgery.

Objectives: Symptomatic angiomyolipoma (AML) and asymptomatic AML larger than 4 cm in size are usually treated with nephron-sparing surgery or transarterial embolization. We used radiofrequency ablation to treat the vascular pedicle of exophytic AML with low R.E.

[Research on the NO2 mean concentration measurement with target differential optical absorption spectroscopy technology].

A new monitoring method of NO2 concentration near ground with the target difference absorption spectrum technology (Target DOAS) is introduced in the present paper. This method is based on the passive difference absorption spectrum technology. The instrument collects solar reflection spectrum of remote objectives, such as wall of building and mountain, and a specific reference spectrum is chosen to subtract the influence of trace gases from the target to atmospheric top, then integrated concentration of NO2 along the path between the target and instrument can be calculated through the differential absorption spectra inversion algorithm.

Learning curve for bipolar transurethral enucleation and resection of the prostate in saline for symptomatic benign prostatic hyperplasia: experience in the first 100 consecutive patients.

Background: Bipolar transurethral enucleation and resection of the prostate in saline has recently been considered as a safe and technically feasible endoscopic procedure for symptomatic benign prostatic hyperplasia. However, it has not been accepted widely because of the perception of technical difficulty.

Methods: A retrospective data review was performed of the first consecutive 100 patients who had undergone bipolar transurethral enucleation and resection of prostatic adenoma.

[Research on the method of copper converting process determination based on emission spectrum analysis].

A method of copper converting process determination based on PbO/PbS emission spectrum analysis was described. According to the known emission spectrum of gas molecules, the existence of PbO and PbS was confirmed in the measured spectrum. Through the field experiment it was determined that the main emission spectrum of the slag stage was from PbS, and the main emission spectrum of the copper stage was from PbO.

[Studies on the remote measurement of the emission of formaldehyde by mobile differential optical absorption spectroscopy].

Formaldehyde (HCHO) is the most abundant carbonyl compounds that play an important role in atmospheric chemistry and photochemical reactions. Formaldehyde is an important indicator of atmospheric reactivity and urban atmospheric aerosol precursors. In the present paper, the emission of formaldehyde from chemical area was measured using the mobile differential optical absorption spectroscopy (DOAS).

The methods of reconstruction of pancreatic digestive continuity after pancreaticoduodenectomy: a meta-analysis of randomized controlled trials.

Background: Pancreatic fistula (PF) is an important factor responsible for the considerable morbidity associated with pancreaticoduodenectomy (PD). There have been many techniques proposed for the reconstruction of pancreatic digestive continuity to prevent fistula formation but which is best is still highly debated. We carried out a systematic review and meta-analysis to determine the effectiveness of methods of anastomosis after PD.

[Monitoring and analysis of vertical profile of atmospheric HONO, NO2 in boundary layer of Beijing].

Based on the scanning differential optical absorption spectroscopy (DOAS) system, field measurement of vertical profiles of HONO and NO2 was performed continuously from Aug. 27, 2007 to Sep. 4, 2007 in Chaoyang District of Beijing, and their vertical profiles were analyzed.

[Atmospheric HCHO gradient monitoring and analysis in Beijing City with a scanning DOAS system].

Scanning differential optical absorption spectroscopy (DOAS) technique combined with meteorological tower was used for monitoring vertical profiles of SO2, NO2, O3, HCHO and HONO along three light paths in Beijing City during July 28, 2009 to August 13, 2009. As a result, the time series of concentrations and vertical gradient of HCHO as well as other gases were acquired. By analyzing the vertical distribution frequency characteristics of HCHO, data of other gases and meteorological data, it was concluded that the main source of HCHO is vehicles emissions around the measurement site.

[Retrieval of tropospheric NO2 by multi axis differential optical absorption spectroscopy].

A method of retrieving NO2 in troposphere based on multi axis differential optical absorption spectroscopy (MAX-DOAS) was introduced. The differential slant column density (dSCD) of NO2 was evaluated by differential optical absorption spectroscopy (DOAS), removing the Fraunhofer structure and Ring effect. Combining the results of different observing directions, the tropospheric NO2 differential slant column density (deltaSCD) was evaluated, and the air mass factor (AMF) was calculated with the radiative transfer model SCIATRAN and the tropospheric NO2 vertical column density (VCD) was retrieved.