Objective To investigate the pollution status of heating-ventilating-air conditioning(HVAC) systems in Shenyang public place. Methods The dust samples were collected and examined from the HVAC system in twelve hotels and ten shopping malls in Shenyang in March-June, 2004. Results Among HVAC systems in Shenyang public buildings, 71.51% of them were moderately polluted and 27.37% were seriously polluted. The rate of serious pollution of hotels was higher than that of shopping malls, the volume of dust in the air pipes in hotels was lager, but the amount of bacteria and fungi was less than that of shopping malls. Conclusion The HVAC systems of Shenyang public buildings have been seriously polluted.

Objective To know the drinking water safety for students and teachers in urban and rural boarding schools in Guangxi, further to prevent and control the water-borne diseases. Methods The random stratified cluster sampling method was used to select 100 schools in 10 counties of Nanning, Liuzhou and Guilin cities. The drinking water samples were collected and tested according to Sanitary Standard for Drinking Water Quality2001. The epidemic situation of intestinal infectious diseases was investigated. Results The total qualified rate of drinking water quality in 100 boarding schools of 10 counties cities was only 27.00%, as for the water supply provided for themselves with disinfection, the qualified rate was 47.37%, without disinfection, it was 16.95%. 24 outbreak events of intestinal infectious diseases occured in 100 boarding schools in 2000-2005, 2 339 of school teachers and students were attacked, including 13 outbreak events of typhoid and paratyphoid 54.17% with 1 280 cases 54.72%, 6 outbreak events of bacterial dysentery25.00% with 829 cases35.44%, 4 outbreak events of infectious diarrhea 16.67% with 225 cases 9.62%, 1 outbreak of hepatitis A 4.17% with 5 cases 0.21%. These 24 epidemic events were caused by drinking water, the morbidity was higher in the schools where there was no disinfection facility in water supply. Conclusion Some of water supply for some urban and rural boarding schools have been polluted with bacteria in Guangxi, so drinking water disinfection should be done to ensure water safety and prevent the related diseases in these schools.

Objective To retrospectivly analyze the value of Pap smear,liquid-based cells, colposcopy and colposcopic cervical biopsy in the diagnosis of cervical cancer. Methods 116 cases of cervical cancer were retrospectively analyzed, and the value of Pap smear,liquid-based cells ,colposcopy,and colposcopic cervical biopsy in the diagnosis of cervical cancer were investigated. Result 116 patients were pathologically diagnosed with cervical cancer before and after surgery. Pap smear was performed for 30 patients (25.9%) ,and 10 patients (33.3%) were detected with HSIL. Liquid-based cells was performed for47 patients (40.5%) ,and 25 patients (53.1%) were detected with HSIL. Colposcopy was performed for 99 patients (85.3%), and 75 patients (75.8 % ) were detected with HSIL or invasive cancer. Preoperative colposcopic biopsy was performed for 99 patients, and the pathological coincidence rate was 94.9%. There was no significant difference statistically between two cytology screening ( P ＞ 0.05 ). There was significant difference statistically between liquid-based cells and colposcopy ( P ＜ 0.01 ). There were significant differences statistically among liquid-based cells,colposcopy ,and colposcopic cervical biopsy ( P ＜0.01 ). Conclusion Cytology, colposcopy, colposcopic cervical biopsy could not be individually more complete and accurate detection of cervical cancer. Colposcopy,colposcopic biopsy than cytology had higher accurate rate of diagnosis of cervical cancer. A reasonable combination of multiple detection methods could improve the diagnostic accuracy of cervical cancer.

Adrenocorticotropic Hormone ; blood ; Animals ; Animals, Newborn ; Cold Temperature ; Environmental Exposure ; adverse effects ; Hydrocortisone ; blood ; Interleukin-10 ; blood ; Interleukin-4 ; blood ; Swine

Animals ; Cell Proliferation ; drug effects ; Cells, Cultured ; Collagen ; biosynthesis ; Cricetinae ; Cricetulus ; Fibroblasts ; cytology ; drug effects ; metabolism ; Macrophages ; drug effects ; Nanostructures ; Silicon Dioxide ; pharmacology

Objective To investigate whether the μ- and δ-opioid receptors were involved in mediating the a ntinociceptive effect of opioid injection into the nucleus submedius (Sm). Methods Nociceptive behavior produced by subcutaneous injection of formalin (65 mmol/L, 50 μL) into the hind paw of the rat was assessed quantitatively using an automated movement detection system. The effects of morphine and selectiveμ- and δ-opioid receptor antagonists microinjected unilaterally into the Sm were determined in the awake rats. Results Morphine (31 mmol/L, 0. 5 μL) depressed the nociceptive behavior elicited by formalin, and this effect was antagonized completely by the selective μ-receptor antagonist β-funaltrexamine (β-FNA, 0. 4 mmol/L, 0. 5 μL) and naloxonazine (0.8 mmol/L, 0.5 μL), and partly by the δ-receptor antagonist naltrindole (0.4 mmol/L, 0.5μL).Administration of morphine into thalamic regions more than 0. 5 mm dorsal to the Sm had no effect on the nociceptive behavior. Conclusion Antinociceptive effects produced by opioid acting on Sm neurons are mediated mainly by μ-opioid receptors, and partly by δ-receptors.

Objective To understand the status quo of the body mass index (BMI) among rural left‐behind elderly people in Chongqing ,and to analyze the impact of diet on BM I value to provide the dietary suggestions for improving the nutrional status of rural left behind elderly people .Methods The self‐designed questionnaire was used to conduct the on-site investigation on the ru‐ral left‐behind elderly people .The SPSS19 .0 statistical software was used for analysis .Results The average BMI value of surveyed people was (22 .14 ± 3 .22)kg/m2 ,the BMI value had statistically significant difference between different genders (χ2 =8 .170 ,P=0 .043) ,the normal proportion of BMI values in males was higher than that in females ;the BMI value had statistical difference a‐mong different ages(χ2 =18 .568 ,P=0 .029) ,the proportion of malnutrition was increased with the age increase .In the eating be‐haviors ,the food flavor was negatively correlated with the BMI value ,the choice of cooking oil was positively correlated with the BMI value(P<0 .05);the consumption frequency of fruits ,beans and bean products ,fish and shrimp was negatively correlated with the BMI value ,the consumption frequency of livestock meat and eggs was positively correlated with the BMI value(P<0 .05) .Con‐clusion In order to promote the nutritional status and health condition of rural left‐behind elderly people ,the cognition of their own physical constitution should be enhanced ,and the rational dietary habit and food consumption habit should be cultivated .

An introduction to the telemedicine service of the hospital in its web-based hospitalprogram which covers theweb-based healthcare center,and thehealthcare cabin to interact with the center remotely.The center operates on the telehealth management platform based on cloud computing, offering remote monitoring,health assessment,health management,follow-up,online consultation,pre-registration and mobile payment.Theweb-based hospitalcan simplify the medical service flow,alleviate the complaints incurred by concentrated quality medical resources,influx of patients and limited physical space of tertiary hospitals,and the tense doctor-patient relationship as well.

ObjectiveTo investigate the value of CEUS in differential diagnosis of benign and malignant thyroid solid lesions.MethodsTotally 45 patients with thyroid solid lesions underwent CEUS examination.The enhancement mode and blood perfusion characteristics of malignant and benign lesions were analyzed,and the results were compared with pathology.ResultsCEUS diagnosed 31 benign lesions and 14 malignant masses.The diagnostic accordance rate of CEUS was 93.75％ (30/32) and 92.31％ (12/13) for benign and malignant lesions respectively.In 31 benign lesions,27 (27/31,87.10 ％) showed entire homogeneous enhancement,4 (4/31,12.90％) presented inhomogeneous enhancement.In 14 malignant masses,1 (1/14,7.14 ％) showed homogeneous hypoechoic enhancement,12 (12/14,85.71％) presented inhomogeneous hyperechoic enhancement and 1 (1/14,7.14％) presented non-enhancement.ConclusionCombined with two-dimensional grey scale ultrasound and CDFI,CEUS enables dynamic observation of the microvascular perfusion of thyroid lesions,therefore helps to differentiate benign and malignant thyroid lesions.

PurposeTo investigate CT-guided needle aspiration biopsy in segmental bronchial lesions of central lung cancer., and to provide basis for developing therapeutic schedule.Materials and Methods Fifty-five cases of suspected central lung cancer with segmental bronchial lesions were selected. All patients underwent CT-guided needle aspiration biopsy. The puncture complications and the effect of different position and direction of the puncture needle on complications were observed.Results All 55 patients were punctured successfully in one time. Satisfactory biopsy specimens were collected in all patients. Pathological diagnosis rate was 90.91% (50/55). Operative pathology or post-puncture follow-up confirmed the central lung cancer with segmental bronchial lesions in 40 cases with positive rate of 72.73% (40/55), and the negative rate was 18.18% (10/55). As for puncture complications, the needle tract bleeding was seen in 19 cases (34.55%), and some pneumothorax in 4 cases (7.27%). There was statistic difference between the two complications (χ2=6.03,P<0.01). The complications of prone and supine position had no statistical difference (P>0.05). Incidence of complications decreased with performance angle by the order of vertical puncture, horizontal puncture, and 45 degrees puncture. There was statistic difference (χ2=3.68,P<0.05).Conclusion CT-guided percutaneous needle aspiration biopsy is accurate in diagnosis of central lung cancer with segmental bronchial lesions. It has no serious complication and is worthy of general clinical application.