[Objective] To explore the status of chlorite pollution in drinking water due to chlorine dioxide , aswell as its causes and counter measures. [Methods]A water plant collecting surface water as raw water slightly pol-luted by organic compounds and B water plant collecting ground water without organic compounds pollution wereselected as observed objectives. Chlorine dioxide generators were used in both of A and B water plants, their rawmaterials was chlorite for A plant and chlorate for B plant. The levels of chlorite in treated water from these twowater plants were determined by amperometric titration. [Results]The levels of chlorite in treated water of A waterplant ranged 0.530～0.760 mg/L, 2.6～3.8 times of the standard value, with a over standard rate of 100％, thelevels of B water plant range 0.257～0.733 mg/L, 1.3～3.7 times of the standard value, with a over standard rateof 83.3％. [Conclusion] The treated water of A and B water plants presented higher pollution by chlorite, the by-product of chlorine dioxide disinfection.

Objective To analyze the cause of lower limbs swelling after knee arthroscopy operation, and compare the effect of gravity and pump irrigation system on lower limbs swelling after operation. Methods 60 patients after knee arthroscopic surgery were divided into the pump irrigation group and the gravity group with 30 patients in each group. We measured the perimeter of the lower limb pre and post operation and compared the operation time of each group. Results There were no significant differences in the perimeter of the lower limb and operation time between the gravity group and the pump irrigation group. Conclusions During knee arthroscopic surgery which cost less than 1 hour, there was no inlluence on lower limbs swelling whether using gravity or pump irrigation system.

BACKGROUND:Attention deficit hyperactivity disorder(ADHD) is treated clinically mainly with medication,psychotherapy and acupuncture,which is seldom treated with simple massage.During working in Swaziland, the writer found a part of children only accept massage for they did not receive remarkable results by medication and also were scared of acupuncture. OBJECTIVE:To probe manipulation and mechanism of massage on ADHD in children. DESIGN:Cases analysis. SETTING:Sino Japan Friendship Hospital. PARTICIPANTS:All the cases were collected from April 2000 to April 2002 while the writer was working in Swaziland. Thirty three children with ADHD were in accordance with the symptomatic diagnostic standards of American DSM IV.No control was selected. INTERVENTIONS:Simple massage manipulation was adopted in treatment of the 33 ADHD children.The common manipulations included head manipulation,chest abdominal manipulation and back manipulation.According to various clinical manifestations,the manipulations were modified based on differentiation of syndromes. MAIN OUTCOME MEASURES:Therapeutic results on patients with massage manipulations. RESULTS:Of the 33 cases of ADHD children treated with massage, 10 were cured,9 were remarkably effective,9 were improved and 5 had no effect. CONCLUSION:The therapeutic results of massage on ADHD in children are satisfactory and safe without side effects.

Objective: To investigate the awareness and training needs of incontinence-associated dermatitis (IAD) among clinical nurses, so as to provide insights into the standardization of clinical nursing of IAD. Methods: Clinical nurses with more than one year of service in Lanxi People's Hospital were selected as study subjects in October 2021. The demographics, awareness of IAD knowledge and training needs were collected using a self-designed questionnaire. The age-, duration of service-, academic degree-, professional title- and department-specific awareness of IAD knowledge was analyzed. Results: A total of 420 questionnaires were allocated, and 409 valid questionnaires were recovered, with an effective recovery rate of 97.38%. All respondents were females, with a mean age of (37.68±4.82) years, and a mean service duration of (18.72±3.46) years. There were 199 nurses with a primary title (48.66%), 169 nurses with a intermediate title (41.32%), and 41 nurses with a senior title (10.02%). There were 217 nurses with a bachelor degree or above (53.06%), and 208 nurses from internal medicine and surgery departments (50.86%). The overall awareness of IAD knowledge was 74.57% among the respondents, and the awareness rates of IAD definition, the difference between IAD and pressure ulcers and influencing factors of IAD were 86.06%, 83.37% and 82.15%, respectively. The nurses at ages of 41 to 53 years (89.01%), having a senior title (94.24%), with a nursing duration of 21 years and longer (92.97%) and participating in IAD training during the recent one year (77.41%) had a high awareness rate of IAD-related knowledge. There was a high proportion of needs for training on basic IAD-related knowledge (396 nurses, 96.82%). Conclusions The awareness of IAD knowledge requires to be improved among clinical nurses. The training on IAD knowledge is recommended to be improved.

Objective To observe the growth inhibition effect of sustained-release fluorouracil implantation in nude mice with human colorectal carcinoma and to discuss its influence on caspase-3 expression .Methods The colorectal carcinoma subcutaneous transplanted model with LoVo cell in BALB/c nude mice was established and divided into 4 groups randomly :the tail intravenous injection of PBS (A group) ,the tail intravenous injection of 5-FU group (B group) ,the intratumor injection of 5-FU group (C group);and the implant of sustained-release fluorouracil group(D group) .After 15 d of medication ,the tumor weight and tumor volume were recorded ,the tumor inhibiting rates were calculated .The tumor tissues were observed by HE staining and detected the expression of caspase-3 by immunohistochemistry (IHC) .Results Sustained-release fluorouracil could suppress the transplantation tumor growth significantly ,the tumor weight and tumor volume in the D group had statistical differences compared with the A ,B and C groups(P<0 .05) ,which could up-regulated the expression of caspase-3 ,the differences between the D group with the A ,B and C groups (P<0 .05) .Conclusion Sustained-release fluorouracil can inhibit the grow th of colorectal carcinoma transplantation tumor more effectively than conventional fluorouracil and up-regulate the expression of caspase-3 ,which prompts that sustained-re-lease fluorouracil may play the anti-tumor role by inducing the tumor cell apoptosis via apoptosis pathway .Its definite tumor-inhibi-ting effect deserves to be promoted in clinical chemotherapy .

Objective To study the changes of the semen quality and the spermatogoa ultrastructure in uremic patients before and after renal transplantation. Methods The semen was analyzed and spermatogoa were investigated under scanning electron microscopy (SEM) in 8 patients before and after renal transplantation and 5 normal volunteers. Results In uremic patients, there was significant decreases in sperm motility, survival rate and sperm density. Under SEM, the deletion of the acrosome, distinct vacuoligation in the nucleus, deficiency of the postacromal and postnuclear ring and ~absence of the middle segment of mitochondrial sheath were found. After renal transplantation, the semen main parameters were significantly improved (P

500?10 6/L), case 6～10 as sub-group2(SG2, CD4 at 499～200?10 6/L), case 11～12 (CD4

Computing thinking is one of the hotspots in computer education field,computer network is the core course of computer,and social information process is increasing the need of computer network professionals.The characteristics of computer network course,teaching of computer network course and problems related with teaching of computer network course were analyzed in aspects of its teaching contents,teaching methods and examination methods in order to train more excellent applied professionals of computer network and improve the computing thinking of undergraduates.The ways or methods for training the computing thinking of undergraduates were put forward,which can thus provide new ideas for the teaching reform of computer network course in colleges and universities.

Objective To investigate the etiology distribution of chronic prostatitis and to analyse its related drug resistance,in order to find out some evidences for diagnosis and therapy of chronic prostatitis.Methods The identification and susceptibility of bacteria,neisseria gonorrhoeae(NG),fungi and mycoplasma were detected by culture in the patients with chronic prostatitis,and the real time PCR was used to detected the Chlamydia trachomatis in 825 out-patients.Results Common bactera identified from total 548 pathogenic microorganisms accounted for 54.19%.Among them,gram-positive bacteria was primary.The ratio of Neisseria gonorrhoeae, fungi,mycoplasma and Chlamydia trachomatis were 3.65 %, 7.48 %,27.93% and 6.75% respectively.62 patients were the multiple infection cases and the ratio was 13.91%.According to sensitivity test,the ratio of drug resistance of bacteria from prostatic fluid was high.Conclusion It may be some important to investigate pathogen distribution and drug resistance analysis for diagnosis and therapy of chronic prostatitis.

To investigate the expression and clinical significance of p27kip1 protein in primary liver cancer, the expression of p27kip1 protein and the relationship with clinicopathological factors were studied in primary liver cancer by using SABC immunohistochemical staining in specimens of 40 cases of primary liver cancer and 20 cases of liver cirrihosis. Our results showed that positive expression rate of p27kip1 protein in primary liver cancer was 37.5% (15/40), which was lower than that in benign lesion of liver 80.0% (16/20, P<0.01). The expression level of p27kip1 protein in primary liver cancer showed significant differences in tumor size, Edmonson histological grade, portal invasion, lymph node metastasis, TNM stage (P<0.05, for all), but not significantly correlated with patient's age and histological types. Log rank test showed that the p27kip1 expression was significantly related with prognosis of the patients (P<0.05), and the prognosis of the patients with p27kip1 positive expression was markedly better than that of those with p27kip1 negative expression. It is concluded that the expression of p27kip1 was significantly related clinicopathological factors of primary liver cancer. p27kip1 protein may be used as a novel tumor marker for primary liver cancer.
Carcinoma, Hepatocellular/*metabolism ; Carcinoma, Hepatocellular/pathology ; Intracellular Signaling Peptides and Proteins/*metabolism ; Liver Neoplasms/*metabolism ; Liver Neoplasms/pathology ; Prognosis ; Retrospective Studies ; Tumor Markers, Biological/*metabolism