Glutaraldehyde is an important fine chemical product. As a disinfectant glutaraldehyde is used in the medical and public health area and also is widely used in the other areas. The content of the glutaraldehyde in the disinfectant products affects the efficiency directly. Determination of glutaraldehyde is important. Several determination methods of the glutaraldehyde were reviewed in this article.

Objective To established a method for determining the acetic acid peroxide in disinfectant. Methods The acetic acid peroxide determined by gas chromatography using FFAP fixative solution, Chromosorb W-AW DMCS column and FID detector. Results The detection limit was 0.001%.The linear range was from 0.01% to 25%.The recovery rate was 93%-102%?RSD was less than 2.93%. Conclusion The method is simple, rapid, sensitive and has a good selectivity. The sample can be directly detected without separation.

patients with chronic alcoholic polyneuropathy (CAPN ) were described. They were all male with age rainging from 33 to 70 years (mean age 53. 7). The cardinal symptoms are. pain and numbness in the extremities, stocking and glove decreased of pain and temperature sense in the legs and arms, the loss of vibration sense and muscule atrophy. The motion nerve conducting velocity (MCV) and sensory nerve conduction velocity (SCV) all are slowed in varying degrees. Superficial peroneal nerve biopsy identified myelin degeneration of myelinated nerve fibers, axonal degeneration or disappearance, degeneration of Schwann cell and also involved perineurium. The change was due to avitaminosis for long-term drinking.

0.999, the average recovery rates were 82%-88%, and RSD was not more than 4.3%(n=6), the detection limit was 0.05 mg/L. Conclusion The method is rapid, accurate, sensitive and applicable to determination of rhodamin B in water.

Objective To evaluate the effects of community rehabilitation care. Methods A 3-year community-based rehabilitation care services in Desheng Community Health Service Center were investigated with questionnaire. Results Those of the knowledge of rehabilitation awareness, keeping in a psychological well being, communicating with others, participating in rehabilitation and other community activities, independent in household activities, the activities of daily living, all improved significantly during the project. Conclusion Community-based rehabilitation care plays a important role in community-based comprehensive rehabilitation services, which may improve the quality of life of people with disabilities and chronic dysfunction.

Objective To investigate the clinical features of cerebral infarction complicated with diabetes mellitus (DCI) compared withthose without diabetes mellitus (NCI). Methods 80 DCI and 86 NCI hospitalized patients were reviewed with their serumal glucose, lipid,uric acid, hemorheology and carotid ultrasound. Results The total cholesterol, low density lipoprotein and uric acid were significantly higherin DCI group than in NCI group (P<0.05), while high density lipoprotein was significantly lower (P<0.05). There were significant differencesbetween these two groups in Hemorheological indicators except hematokrit (P<0.01). The carotid intima media thickness (IMT) wassignificantly higher in the DCI group than in the NCI group (P<0.05). Conclusion DCI patients suffered in more serious lipid, uric acid,hemorheological disorder, and IMT compared with NCI.

Objective To investigate the needs of nursing-based continuing home care in old patients with chronic diseases in communi-ty. Methods From June to August, 2016, 14 old patients with chronic diseases were purposively sampled, and interviewed with semi-struc-ture. The data were collected and refined with phenomenological analysis. Results The patients were very positive in nursing-based continu-ing home care. The main requirements included the knowledge about chronic diseases, psychological comforts, rehabilitation nursing, daily security help and medical insurance support. Conclusion It is necessary to support the continuing home care for old patients with chronic diseases, and strengthen the profesional nursing team building in community.

Theδ13 C values of volatile organic compounds ( VOCs) in various emission sources and ambient air were analyzed by using thermal desorption coupled with gas chromatography and isotope ratio mass. The lowest sample concentration and peak shape quality needed for high precision and accurate analysis were investigated. Fuel evaporation ( gasoline and diesel) , vehicle exhaust, solvent evaporation, dining fumes and ambient air of different functional zones of Xiamen city were collected using Tenax TA tube, and the significant differences in δ13 C values of VOCs between these sources were observed. The δ13 C value of gasoline exhaust ( 97 # ) was heavier (-25 . 84‰) than that of dining fumes (-30 . 26‰) and theδ13 C values of fuel evaporation were heavier than that of vehicle exhaust after combustion. The average δ13 C value of atmospheric VOCs in Xiamen was at the level of -27 . 03‰ to -25 . 40‰, which was close to the δ13 C value of the evaporation and exhaust of gasoline and diesel, indicating that the VOCs in the atmosphere of Xiamen was highly influenced by transportation related sources.

Objective:To explore the diagnostic value of serum tumor marker detection for lung adenocarcinoma and its predictive value for postoperative recurrence.Methods:A total of 100 lung adenocarcinoma patients (modeling group) and 100 benign lung disease patients (control group) admitted to the Cangzhou Hospital of Integrated Traditional and Western Medicine from December 2018 to December 2020 were selected as the research subjects. In addition, 50 lung adenocarcinoma patients admitted from December 2016 to December 2017 were selected as the validation group. The serum carbohydrate antigen 125 (CA125) and carcinoembryonic antigen (CEA) levels of the modeling group and the control group were compared Levels of cytokeratin 21 fragment (CYFRA21-1), carbohydrate antigen 19-9 (CA19-9), and squamous cell carcinoma antigen (SCC-Ag). The receiver operating characteristic (ROC) curve was used to evaluate the diagnostic value of CA125, CEA, CYFRA21-1, CA19-9, and SCC-Ag alone and in combination for lung adenocarcinoma; Single and multiple factor analyses were conducted to identify the risk factors for postoperative recurrence in lung adenocarcinoma patients; A column chart model for predicting postoperative recurrence in lung adenocarcinoma patients was constructed using R software, and a risk stratification system was constructed.Results:The average water levels of CA125, SCC-Ag, CEA, CYFRA21-1, and CA19-9 in the modeling group were significantly higher than those in the control group (all P<0.05). The ROC curve showed that the combined detection of CA125, CEA, CYFRA21-1, CA19-9, and SCC-Ag had high diagnostic value for lung adenocarcinoma, with an area under the curve (AUC) of 0.903 (95% CI: 0.865-0.954); Elevated levels of CEA, CA125, CA19-9, and CYFRA21-1 were independent risk factors for postoperative recurrence in lung adenocarcinoma patients (all P<0.05). Patients were divided into extremely low-risk group (total score<56 points), low-risk group (56 points≤total score<132 points), medium risk group (132 points≤total score<186 points), and high-risk group (total score≥186 points) through risk stratification. The survival curve results showed that there was a statistically significant difference in postoperative recurrence rate among patients with different risk stratification systems ( P<0.05). Conclusions:The combined detection of CA125, CEA, CYFRA21-1, CA19-9, and SCC-Ag has high diagnostic value for lung adenocarcinoma. Among them, CA125, CEA, CYFRA21-1, and CA19-9 have certain predictive value for postoperative recurrence in patients.

Objective: To investigate the anti-tumor effect of CTL cells on colon cancer xenograft in nude mice after knocking out the immune check point CTLA-4 by CRISPR/Cas9 technology. Methods: A specific small guide RNA (sgRNA) for CTLA-4 was designed to construct sgRNA/Cas9 plasmid, which was then transfected into CTL using a lentiviral vector to obtain CTL cells with CTLA-4 deletion (CTLA-4 KO CTL). The transfection efficiency of the plasmid and the deletion efficiency of CTLA-4 were verified. BALB/c nude mice were randomly divided into two groups to prophylactically inoculate CTLA-4 KO CTL (experimental group) or CTL (control group); 3 days later, the animals of two groups were inoculated with colon cancer cell line LS174-T to observe the tumor formation rate and tumor formation time. After constructing colon cancer xenograft model in nude mice, the animals were randomly divided into two groups, respectively treated with CTLA-4 KO CTL (experimental group) and CTL (control group) cells to observe the tumor growth volume and survival time of mice. The serum levels of TNF-α and IFN-γ in nude mice were detected. Results: sgRNAwas designed and CRSIPR/Cas9 system with lentivirus as vector was successfully constructed. CTL cells were transfected with the established CRSIPR/ Cas9 system, and the highest transfection efficiency was up to (28.80±0.62)%. After transfection, the deletion efficiency of CTLA-4 was detected by Flow cytometry. The CTLA-4 expression of CTLA-4 KO CTL group was significantly lower than that of CTL group [(0.91±0.25)% vs (42.70±2.72)%, P<0.05]. In prophylactic assay, the formation rate of colon cancer xenografts in the experimental group was significantly lower than that in the control group(33.33%vs100%,P<0.05). In treatment assay, the tumor volume in the experimental group was significantly inhibited compared with the control group ([503±23.9] vs [911.2±51.4] mm3, P<0.05), and the survivaltimeoftheexperimentalgroupwassignificantlyprolonged (mediansurvivaltime:78dvs42d,P<0.05); Moreover, the secretion levels of serumTNF-α([268.93±17.04]pg/mlvs[148.26±20.07]pg/ml,P<0.05) and IFN-γ(315.38±18.67 pg/ml vs 202.92±29.32 pg/ml, P<0.05) in the experimental group were significantly higher than those in the control group. Conclusions: The lentiviral vector CRSIPR/Cas9 system is an effective gene editing method; its successful deletion of CTLA-4 in CTL cells can significantly inhibit the tumor formation rate of colon cancer xenografts in nude mice and enhance the anti-tumor effect of CTLon colon cancer xenografts.