Objective To analyze the technical essentials of single-microport assisted micro-uni-port thoracoscopic surgery, and to investigate its surgical efficacy and promotional value. Methods Clinical data of patients who consecutively underwent radical upper lobectomy in the Department of Thoracic Surgery of Xi'an International Medical Center Hospital from March 2023 to June 2024 were retrospectively analyzed. According to the surgical approach, patients were divided into two groups: the single-microport assisted group (underwent upper lobectomy via single-microport assisted micro-uni-port thoracoscopy) and the traditional uniportal group (underwent traditional uniportal thoracoscopic lobectomy). Clinical outcomes were compared between the two groups. Results A total of 62 patients were enrolled. There were 30 patients in the single-microport assisted group, with a mean age of (57.4±10.8) years, and 32 patients in the traditional uniportal thoracoscopic group, with a mean age of (57.6±8.7) years. The baseline data were comparable between the two groups. All patients in both groups successfully underwent minimally invasive surgery without conversion to thoracotomy. The operative time in the single-microport assisted group was significantly shorter than that in the traditional uniportal group [(146.03±30.79) min vs. (171.41±36.41) min, P=0.004]. However, there were no statistically significant differences between the two groups in intraoperative blood loss, number of dissected lymph nodes, duration of chest tube drainage, postoperative pain score, postoperative hospital stay, hospitalization cost, or incidence of postoperative complications (all P>0.05). Conclusion Single-microport assisted micro-uni-port thoracoscopic surgery for upper lobectomy can maximally integrate the advantages of three-port and uni-port VATS while effectively avoiding their disadvantages. It significantly shortens the operative time without increasing postoperative pain or complications, and represents a more minimally invasive, safer, and more convenient surgical approach.

Objective:To analyze the temporal distribution of other infectious diarrhea (OID) in Shenzhen and provide evidence for the prevention and control of OID.Methods:The incidence data of OID in Shenzhen from 2011 to 2023 were collected. The seasonal and trend decomposition using loess (STL), seasonal index method, concentration degree and circular distribution method were used to analyze the incidence trend and temporal distribution of OID.Results:A total of 477 611 cases of OID were reported in Shenzhen from 2011 to 2023, with an average annual incidence rate of 260.19/100 000 showing a fluctuating upward trend. The seasonal index method indicated that October-January was period with high incidence of OID in Shenzhen and the seasonal intensity began to decrease in 2020. STL revealed an obvious incidence peak in winter. The concentration method showed that OID had a certain seasonality before 2018 except 2016, but the seasonality was not obvious after 2018. The circular distribution results showed that r was 0.05, mean angle ā was 1.92° and angular standard deviation s was 141.93° ( Z=1 033.37, P<0.001), with the peak on January 1 st and the high incidence period from August 11 th to May 25 th. Conclusions:OID had a certain degree of seasonality in Shenzhen, with an obvious incidence peak in winter. Since the seasonal intensity of OID decreased after 2018, the surveillance, early warning and risk assessment of OID should be continued, and prevention and control measures should be adjusted timely according to the change in the characteristics of the epidemic.

Objective:To analyze the temporal distribution of other infectious diarrhea (OID) in Shenzhen and provide evidence for the prevention and control of OID.Methods:The incidence data of OID in Shenzhen from 2011 to 2023 were collected. The seasonal and trend decomposition using loess (STL), seasonal index method, concentration degree and circular distribution method were used to analyze the incidence trend and temporal distribution of OID.Results:A total of 477 611 cases of OID were reported in Shenzhen from 2011 to 2023, with an average annual incidence rate of 260.19/100 000 showing a fluctuating upward trend. The seasonal index method indicated that October-January was period with high incidence of OID in Shenzhen and the seasonal intensity began to decrease in 2020. STL revealed an obvious incidence peak in winter. The concentration method showed that OID had a certain seasonality before 2018 except 2016, but the seasonality was not obvious after 2018. The circular distribution results showed that r was 0.05, mean angle ā was 1.92° and angular standard deviation s was 141.93° ( Z=1 033.37, P<0.001), with the peak on January 1 st and the high incidence period from August 11 th to May 25 th. Conclusions:OID had a certain degree of seasonality in Shenzhen, with an obvious incidence peak in winter. Since the seasonal intensity of OID decreased after 2018, the surveillance, early warning and risk assessment of OID should be continued, and prevention and control measures should be adjusted timely according to the change in the characteristics of the epidemic.

Cell Line, Tumor ; Cell Proliferation ; Humans ; Melanins ; Melanoma ; Particulate Matter

In this article, for the 6-man 500 m saturation diving chamber, the calculation thinking of circulating air volume, and refrigerating and heating production were introduced; the design and selection requirements of refrigeration unit, circulating fan, magnetic coupling transmission device, and heat exchanger module were also introduced; and the research findings of refrigerating and heating control technology of this system were put forward. The article can provide a reference for developing environmental control system for living chambers of deep saturation diving.

In this article, for the 6-man 500 m saturation diving chamber, the calculation thinking of circulating air volume, and refrigerating and heating production were introduced; the design and selection requirements of refrigeration unit, circulating fan, magnetic coupling transmission device, and heat exchanger module were also introduced; and the research findings of refrigerating and heating control technology of this system were put forward. The article can provide a reference for developing environmental control system for living chambers of deep saturation diving.

BACKGROUND: Studying the relationship between flexibility and body composition of college students is of great significance for enhancing the levels of physical health and sports. OBJECTIVE: To investigate the relationship between sit-and-reach and body composition of college students in Guangxi Zhuang Autonomous Region and differences between sexes. METHODS: Totally 2 175 students from a Guangxi university were randomly selected. Body composition was determined by the MC-180 body composition tester. The students were divided into four groups: ≤ 12.10 cm group,＞ 12.10-16.40 cm group,＞ 16.40-20.70 group and＞ 20.70 group according to quartile of sit-and-reach measured in accordance with the National Physical Health Test Standard. All data were processed by SPSS 22.0 software. RESULTS AND CONCLUSION: Sit-and-reach was significantly correlated with body mass index, percentage of body fat, fat-free mass index, upper limb lean mass and lower limb lean mass (P ＜ 0.05), and percentage of body fat was negatively correlated with sit-and-reach (P ＜ 0.05). The body mass index, fat-free mass index, upper limb lean mass and lower limb lean mass in the ≤ 12.10 cm group were significantly lower than those in the other groups. Fat-free mass index and upper limb lean mass were correlated with sit-and-reach in male college students (P ＜ 0.05). The fat-free mass index and upper limb lean mass in the＞ 16.40-20.70 cm group were significantly higher than those in the ≤ 12.10 cm group. Therefore, there is a positive correlation between the flexibility and fat-free mass index and upper limb lean mass in college students.

Objective: To investigate the clinical features of childhood epilepsy with occipital paroxysms. Methods: The clinical data of 33 children admitted to our hospital from 2015 to 2019 were retrospectively analyzed. Results: The children were divided into three groups: idiopathic group (n=20), structural group (n=10) and genetic group (n=3). Among the structural etiology group, there were 1 case of megagyrus malformation, 1 case of focal cortical dysplasia type Ⅱ (FCDⅡ), 1 case of gestational age infant with enlarged ventricle, and 7 cases of perinatal ischemic-hypoxic encephalopathy (HIE). In the genetic group, there were 1 case of PCDH19 gene mutation, 1 case of cyclin-dependent kinase like 5 (CDKL5) deficiency disorder and 1 case of Wolf-Hirschhorn syndrome. All three groups had ocular motor symptoms and secondary motor symptoms. Compared with the structural group, patients of the idiopathic group had more autonomic symptoms, less visual symptoms, longer ictal duration, less episodes, less abnormal background rhythm, and more epileptic discharges in the frontal lobe or Rolandic area. The genetic group had frequent seizures and the CDKL5 deficiency disorder patient had slowed background and spasms. Compared with the other two groups, patients of the idiopathic group had fewer MRI abnormalities, better seizure control effect, and better prognosis. Conclusions There are many causes of childhood epilepsy with occipital paroxysms. The idiopathic group accounts for a large proportion. The visual symptoms and autonomic symptoms are different between groups. Background abnormalities are detected more often in the structural group and the genetic group, which is also helpful for differential diagnosis. The treatment options and prognosis of different groups vary greatly. The overall therapeutic effect and prognosis of the idiopathic group are better than those of the structural group and the genetic group.

Objective To observe 100 video-electroencephalogram (EEG)-cases of intellectual disability (ID) children,to analyze their EEG features of different degrees of ID,to explore the relationship between EEG changes and ID.Methods We performed a retrospective analysis of long-range video-EEGs of 100 children with an unexplained reason of ID from July 2016 to May 2018 in the department of pediatrics of Xiangya Hospital of Central South University,sumnarized their EEG manifestations,and compared their differences among different degrees of ID.We carried out x2 test according to the degree of ID,and discussed the relationship between the degree of ID and EEG.Results Among 100 cases of ID children with unexplained pathogenic factor,67 cases (67％) of them were males,33 cases (33 ％) of females,38 cases (38％)of mild ID,27 cases (27％) of moderate ID and 35 cases (35％) of severe ID.The EEG background of ID patients showed fast waves (11％),slow waves (15％),generalized discharges (14％) and focal discharges (36％),etc.Focal sharp and spike-wave were the most common in children with moderate ID,while background changes and multifocal sharp spike wave were more common in severe ID children.Conclusions The EEG background changes in children with severe ID have significant differences than mild and moderate degree ones.The specific features of EEG in mild and moderate degree ones is focal discharges,while multiple discharges in severe ID patients.Changes in the EEG may be related to the extent of intellectual disability.

Objective To establish a method for detection of aminophylline in blood samples of preterm infants . Methods A molecularly imprinted electrochemical sensing film on the glassy carbon electrode surface was prepared by electropolymerization using aminophylline as the template molecule and pyrrole as the functional monomer in 0.2 mol/L HAc-NaAc buffer solution ( pH 4.0).The surface morphology and properties of molecularly imprinted sensing films were characterized by three dimensional laser scanning microscopy , differential pulse voltammetry ( DPV) and electrochemical impedance spectroscopy ( EIS) while the effects of scanning cycle number and incubation time were investigated by square wave voltammetry(SWV) method in 5 mmol/L K3[Fe(CN)6] -0.1 mol/L KCl solution.Results Under optimized experimental conditions ,the SWV peak current difference was linear to the negative logarithm of aminophylline concentration in the range from 1.0 ×10 -7 to 1.0 ×10 -3mol/L with a detection limit (S/N=3) of 0.5 ×10 -8mol/L.The recovery rate was 92.2% -101.4%.Also, the molecularly imprinted electrochemical sensor for aminophylline had good selectivity , stability and reproducibility .Conclusion The molecularly imprinted electrochemical sensor for aminophylline can be used for rapid and accurate detection of clinical blood concentrations of aminophylline molecules in preterm infants in the future .