Objective: To explore the psychological factors of college students'internet usage. Method: Based on an open-end investigation, we got a questionnaire. 813 college students were surveyed by this questionnaire. Results:1.5% subjects can be defined as internet addiction disorder (IAD) according to Bread' IAD scale. Six factors were extracted by means of factor analysis, and the results indicated that the psychology factor of college students' Internet use could be a multifaceted nature. We did not find significant difference between user with IAD and common users.

Objective:To explore the relationship between loneliness and internet use.Methods:160 college students were surveyed by UCLA Loneliness Scale, Emotional and Social Loneliness Scale and Scale of Internet Use, and the correlations among them were analyzed. Results: The average time spent on the internet was 10 hours per week, and there was a significant relationship between the time spent on internet and loneliness. Emotional Loneliness (EL) was higher than Social Loneliness (SL). Conclusion: The use of internet enhances loneliness. EL is easierly influenced by the use of internet than SL.

Objective: To study the impact of the residents’ health investment income growth, and analyze rural-urban differences and regional differences. Methods: According to the provincial panel data from 1996 to 2011, two-way fixed effects model ( Two-way FE) is established in empirical analysis. Results: Health investment has positive effects on the income growth of residents, but rural-urban differences and regional differences exist. The health investment income growth effect of rural area is higher than urban, and the effect of western area is higher than the east. Conclusion: While improving the level of urban medical health investment, it needs to focus on health investment in rural and western area. To make the health investment on income growth effect play its work efficiently, and narrow the rural-urban income gap and regional income gap.

Objective To investigate the clinical application value of fibrolarynogoscope in the diagnosis and treatment of otolaryngolgic diseases. Methods Olympus Type-T3 fibrolarynogoscope were used in diagnosis of 3 200 patients. Results 3 200 cases were examined by fibrolarynogoscope, and correct diagnosis was made. 263 cases of foreign bodies in hypopharynx or larynx were moved, 154 cases of nosebleed were treated with MTC-3 microwave therapy apparatus, CX-Ⅲ multifunctional ionization therapy apparatus. Conclusion Fibrolarynogoscope can be widely used in diagnosis and treatment of otolaryngolgic diseases and is an excellent instrument of diagnosis and treatment of otolaryngolgic diseases.

Objective · To study the metabolite profiles on patients of ischemic stroke using metabonomics approach. Methods · The serum samples from the 29 patients with ischemic stroke and 31 healthy controls were analyzed by gas chromatography time-of-flight mass spectrometry (GC-TOFMS) coupled multi-dimensional statistical methods to find differential metabolites in two groups. Results · Orthogonal partial least squares analysis (OPLS) model was generated based on identified metabolites and shown clear discrimination from patients and healthy controls. Some serum metabolite levels were significantly altered in patients. Six up-regulated metabolites included γ- aminobutyric acid, glutaric acid, glyceric acid, gluconic acid, lactobionic acid, and cholesterol, and nineteen down-regulated metabolites included citric acid, aconitic acid, malic acid, succinic acid, β-alanine, and glycerol-3-phosphate. Conclusion · Amino acid metabolism, glycometabolism and tricarboxylic acid (TCA) cycle are disturbed in patient of ischemic stroke. The metabonomic approach has great potential to understand the underlying mechanisms of stroke in ischemic patients.

Objectives To analyze the risk factors associated with infant wheezing in Zhongshan city. Methods A multi-center, large sample of case-control study was applied and the data related to risk factors was collected by questionnaire survey. T test and chi-square test were firstly used for univariate analysis, and then the multivariate stepwise logistic regression was used to analyze the independent risk factors associated with infant wheezing. Results A total of nine factors were found rele-vant to infant wheezing by univariate analysis including parental allergic history, way of birth, respiratory syncytial virus infec-tion, Mycoplasma pneumoniae infection, personal allergic history, like crying, parents have constant disagreements, home near the road, and factory around (P<0.05). Parental allergic history (OR=3.441, 95%CI:1.914-6.186, P<0.001), respiratory syncy-tial virus infection (OR=2.910, 95%CI:1.793-4.723, P<0.001), Mycoplasma pneumoniae infection (OR=2.277,95%CI:1.110-4.667, P=0.025), home near the road (OR=2.036, 95%CI:1.280-3.239, P=0.003) and like crying (OR=1.521, 95%CI:1.049-2.206, P=0.027) were approved to be the independent risk factors of infant wheezing in ZhongShan. Conclusions Nine factors have relationship with infant wheezing, including parental allergic history, respiratory syncytial virus infection, Mycoplasma pneumoniae infection, home near the road, like crying, personal allergic history, and that the former five factors are the indepen-dent risk factors.

BACKGROUND:The measure and prediction of the shape of optic nerve head are the key issues for early diagnosis and duration prediction of glaucoma. Therefore, it is significant to research the shape variation of optic nerve head under high intraocular pressure.
OBJECTIVE:To establish three-dimensional finite element model of optic nerve head and to analyze the deformation of optic nerve head and the change in retina thickness after acute high intraocular pressure.
METHODS:Animal model of acute ocular hypertension was established by methods of anterior chamber perfusion. The tomographic images of the optic nerve head of a cat were obtained at the normal intraocular pressure and 5 320 Pa, 7 980 Pa, 10 640 Pa, 13 300 Pa, 15 960 Pa intraocular pressures using optical coherence tomography. Then, we measured the variation of retinal thickness at typical location. Basing on the tomographic images of optic nerve head of a cat at normal intraocular pressure, we obtained three-dimensional structure of retina and choroid using software MIMICS. Then three-dimensional model of optic nerve head was established by assembling the retina and choroid. The deformation of optic nerve head and the change in retinal thickness under high intraocular pressure were observed using software ABAQUS. The effectiveness of the model was verified by the experimental result.
RESULTS AND CONCLUSION:With the increase of intraocular pressure, the retinal thickness is thinner, the optic nerve head depth, width and the ratio of the depth to width are gradual y increased. It suggests that the acute high intraocular pressure causes retinal thinning, optic nerve head widening and deepening. It is feasible to establish optic nerve head modeling in vivo by using optical coherence tomography, mechanical analysis can be applied to predict the shape variation of optic nerve head, which is significant to further deduce the pathological process of glaucoma.

Background and purpose:We investigated whether lfuorine-18 lfuorodeoxyglucose (18F-FDG) maximal standard uptake value (SUVmax) of the primary tumor (SUV-T), SUVmax of the regional lymph nodes (SUV-N) or the overall loco-regional lesion SUVmax (SUV-TOTAL) was related to survival of patients with stage Ⅲ non-small cell lung cancer (NSCLC) who received Cetuximab and combined definitive chemoradiotherpay. Methods:From September 2009 to July 2012, seventeen patients with unresectable stageⅢNSCLC receiving cetuximab with cisplatin/vinorelbine (NP) followed by concomitant NP and intensity-modulated radiotherapy (IMRT) at the Fudan University Shanghai Cancer Center were enrolled onto a prospectively study. All patients received positron emission tomography/computerized tomography (PET/CT) scans within 2 weeks before enrolment. Univariate analysis were used to assess the correlation between SUV-T, SUV-N, SUV-TOTAL, gender, age, histology, tumour-node-metastasis (TNM) stage, performance status (PS) as well as smoking status and survival. The factors which showed statistical signiifcance entered into multivariate Cox-regression model. Survival functions of different populations were estimated by Kaplan-Meier method and compared by Log-rank test. Results:In the univariate analysis, SUV-T, SUV-N, SUV-TOTAL, PS and smoking status were prognostic factors. The best cut-off values for SUV-T, SUV-N and SUV-TOTAL were 11, 11 and 20, respectively. Multivariate analysis revealed that SUV-TOTAL (P=0.012), SUV-T (P=0.025), and SUV-N (P=0.033) were independent predictors of survival with hazard ratio (HR) of 14.7, 11.2, and 6.2, respectively. Conclusion:Local, regional and locoregional maximal SUVs deifned by 18F-FDG PET-CT scanning may have a strong correlation with survival in this patients setting, which merits further study.

Objective To investigate the clinical significance of testing serum kisspeptin in central precocious puberty (CPP) girls. Methods Sixty eight CPP girls and 68 healthy girls was studied from December 2012 to December 2014. HEK293 cells were cultured. Luciferase reporter assay was performed to verify the binding of miR-137 to the 3′UTR of KISS1. Serum miR-137 level was levaluated by qRT-PCR. Level of serum luteinizing hormone , prolactin , follicle stimulating hormone , thyrotropin , free thyroxine and estradiol was evaluated by chemi-luminescence immunoassay. The level of serum kisspeptin was detected by ELISA. Results MiR-137 was confirmed to bind to the 3′UTR of KISS1. The level of serum miR-137 was downregulated and kisspeptin was enhanced in CPP girls. The expression of miR-137 and kisspeptin was negatively correlated. Serum miR-137 level was negatively related to bone age and bone age advancement. According to the results of GnRH stimulating test, serum miR-137 was related to peak LH and peak/basal LH ratio. Conclusions MiR-137 could bind to the 3′UTR of KISS1. MiR-137 may be a potential biomarker for CPP assisted diagnosis.

Background and purpose:Radiomics is an emerging field that generates large amounts of valuable clinical information through extracting quantitative imaging features. The purpose of this study was to use the radiomics approach to assess the value of features captured from PET and CT in predicting the therapeutic effect in stageⅠ non-small cell lung cancer (NSCLC) after stereotactic ablative radiotherapy (SABR).Methods:Patients with stageⅠ NSCLC conifrmed by pathology and treated with SABR were included retrospectively. The gross tumor volume (GTV) was deifned by two radiologists. PET and CT scan images were collected, and radiomic features were further extracted and analyzed. Non-negative matrix factorization was used to distinguish patients with or without local control.Results:Sixteen patients were eligible for analysis. This study identiifed two PET features (LL_GLCM_Maximal_Correlation_Coeffcient and HL_GLRMS_LRE) captured from PET/CT as having signiifcance in classifying patients with or without disease development. This study not ifnd similar results in CT scans.Conclusion:It seems feasible to use radiomics information effects from PET/CT to predict therapeutic effects of SABR in stageⅠ NSCLC. Further investigation is needed.