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Yang YH, Wang M, Chong YM, Deng HM, Jiang ML, Yang ZZ, Yan YH, Qi JL, Li M, Gou Y. [Quality status of Bombyx Batryticatus and suggestions for Chinese Pharmacopoeia (2025)]. Zhongguo Zhong Yao Za Zhi 2023; 48:4087-4096. [PMID: 37802776 DOI: 10.19540/j.cnki.cjcmm.20230413.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 10/08/2023]
Abstract
To understand the current quality status and rearing situation of Bombyx Batryticatus, the authors collected 102 batches of Bombyx Batryticatus from different main producing areas and five major Chinese medicine markets from 2016 to 2018, and measured the properties and quality of the silk gland, to clarify the quality status of Bombyx Batryticatus from different producing areas and markets. In addition, 35 batches of Bombyx Batryticatus from 2019 to 2022 were used to verify the silk gland after revision. Moreover, Beauveria Bassiana was inoculated in the silkworm of 4-5 instars, and standardized rearing was carried out until they die. The death rate and the quality of Bombyx Batryticatus were measured to determine the differences in Bombyx Batryticatus of different instars, and explore the rationality of the infection age of Bombyx Batryticatus in Chinese Pharmacopoeia(2020). The results revealed that in the 102 batches of Bombyx Batryticatus, the qualification rate of silk gland was low; the content of total ash far exceeded the standard; the content of beauvericin varied greatly. The qualification rate of the silk gland of the 35 batches of Bombyx Batryticatus was only 47.49%, which could be increased to 73.00% if the number of silk gland was 2 to 4. The death rate of Bombyx Batryticatus at different infection ages was quite different, with uneven quality. Generally, the yield of Bombyx Batryticatus inoculated on the first day of the fifth instar was high with good quality. Therefore, in combination with the quality and actual production of Bombyx Batryticatus, the following suggestions were proposed for revision of Bombyx Batryticatus in Chinese Pharmacopoeia(2025): The number of silk gland should be revised as 2-4 bright brown or bright black silk glands, after which, the quality of Bombyx Batryticatus could be guaranteed, and the "quality identification based on character" could also be reflected scientifically; the content determination index that the content of beauvericin shall not be less than 0.017% should be added to better control the quality of Bombyx Batryticatus; the infection age should be revised as the first day of the fifth instar to narrow the age span, which could better fit the actual production and ensure the quality of Bombyx Batryticatus.
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Affiliation(s)
- Yong-Hong Yang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy/School of Modern Chinese Medicine Industry, Chengdu University of Traditional Chinese Medicine Chengdu 611137, China
| | - Mei Wang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy/School of Modern Chinese Medicine Industry, Chengdu University of Traditional Chinese Medicine Chengdu 611137, China
| | - Ye-Min Chong
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy/School of Modern Chinese Medicine Industry, Chengdu University of Traditional Chinese Medicine Chengdu 611137, China
| | - Hong-Mei Deng
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy/School of Modern Chinese Medicine Industry, Chengdu University of Traditional Chinese Medicine Chengdu 611137, China
| | - Meng-Lian Jiang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy/School of Modern Chinese Medicine Industry, Chengdu University of Traditional Chinese Medicine Chengdu 611137, China
| | - Zhuan-Zhen Yang
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy/School of Modern Chinese Medicine Industry, Chengdu University of Traditional Chinese Medicine Chengdu 611137, China
| | - Yu-Hao Yan
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy/School of Modern Chinese Medicine Industry, Chengdu University of Traditional Chinese Medicine Chengdu 611137, China
| | - Jing-Liang Qi
- National Medical Products Administration Key Laboratory for Quality Evaluation of Traditional Chinese Medicine (Traditional Chinese Patent Medicine), Sichuan Institute for Drug Control (Sichuan Testing Center of Medical Devices) Chengdu 611731, China
| | - Min Li
- State Key Laboratory of Southwestern Chinese Medicine Resources, School of Pharmacy/School of Modern Chinese Medicine Industry, Chengdu University of Traditional Chinese Medicine Chengdu 611137, China
| | - Yan Gou
- National Medical Products Administration Key Laboratory for Quality Evaluation of Traditional Chinese Medicine (Traditional Chinese Patent Medicine), Sichuan Institute for Drug Control (Sichuan Testing Center of Medical Devices) Chengdu 611731, China
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Deng HM, Wang C, Cai WJ, Liu Y, Zhang LX. Managing the water-energy-food nexus in China by adjusting critical final demands and supply chains: An input-output analysis. Sci Total Environ 2020; 720:137635. [PMID: 32325592 DOI: 10.1016/j.scitotenv.2020.137635] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Revised: 02/28/2020] [Accepted: 02/28/2020] [Indexed: 06/11/2023]
Abstract
The rapid population growth in China has increased the demand for limited water, energy and food resources. Because the resource supply is constrained by future uncertainties such as climate change, it is necessary to examine the connections among water, energy and food resources from the perspective of the relevant final demands. Based on an input-output model and structural path analysis, this study aims to explore the hidden connections among water, energy and food resources by identifying important final demands and examine how these resources are embodied in upstream production and downstream consumption processes along the supply chain. The water-energy-food nexus approach in this research identifies where and how these resources intersect in economic sectors. By simultaneously considering the water, energy and food footprints, synergistic effects can be maximized among these resource systems. The results reveal that urban household consumption and fixed capital formation have large impacts on water-energy-food resources. Besides, agriculture, construction and service sectors have the largest water-energy-food footprints. For each resource, we rank the top-20 supply chain paths from the final demands to the upstream production sectors, and six critical supply chain paths are identified as important contributors to the consumption of all these resources. Compared with independent approach to manage water, energy and food resources, the nexus approach identifies the critical linkages of the water, energy and food systems and helps to formulate integrated policies to effectively manage these resources across sectors and actors. Synergistic strategies for conserving water, energy, and food resources can be achieved through avoiding unnecessary waste in end uses and improving resource use efficiency along critical supply chains. This research can help consumers, industries and the government make responsible consumption and production decisions to conserve water, energy and food resources.
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Affiliation(s)
- Hong-Mei Deng
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Can Wang
- School of Environment, Tsinghua University, Beijing 100084, China; State Key Joint Laboratory of Environment Simulation and Pollution Control, Beijing 100084, China.
| | - Wen-Jia Cai
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Beijing 100084, China
| | - Yuan Liu
- School of Economics, Hitotsubashi University, Tokyo 186-8601, Japan
| | - Li-Xiao Zhang
- State Key Joint Laboratory of Environment Simulation and Pollution Control, Beijing 100084, China; School of Environment, Beijing Normal University, Beijing 100875, China
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Fang P, Lu J, Liu YH, Deng HM, Zhang L, Zhang HQ. Benefit of an operating vehicle preventing peritonitis in peritoneal dialysis patients: a retrospective, case-controlled study. Int Urol Nephrol 2018; 50:1163-1170. [PMID: 29508173 DOI: 10.1007/s11255-018-1823-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 02/10/2018] [Indexed: 10/17/2022]
Abstract
BACKGROUND Peritonitis, which is one of the leading complications of peritoneal dialysis (PD) worldwide, severely affected morbidity and mortality of the PD patients. Although many efforts have been made to prevent PD-related peritonitis, it seems impossible to prevent it completely. Many causes have been reported to lead to peritonitis, and contamination during bag exchange is one of the important risk factors for peritonitis. METHODS Here, we introduce an operating vehicle, which we invented to provide a sterile and safe space for bag exchange. A single-center, retrospective, case-control study was undertaken to determine whether this operating vehicle has a protective role in preventing peritonitis. In total, 462 continuous ambulatory peritoneal dialysis patients were included in this study from October 2014 to March 2017. According to their personal will, these patients chose to use operating vehicle or traditional method during their bag exchange. The demographic, clinical and laboratory data of these patients in the two groups were collected, analyzed and compared. RESULTS Of 462 patients with home dialysis, operating vehicle group consisted of 61 patients, and control group consisted of 401 patients. In the control group, over 677 patient-years, peritonitis occurred in 69 of 401 patients (17.2%), while in the operating vehicle group, over 60 patient-years, only 4 of 61 patients (6.6%) had episodes of peritonitis. The number of patients suffered from peritonitis was significantly decreased in the operating vehicle group (P = 0.034). Besides, there were a total of 99 episodes of peritonitis, and the rate was 1 episode every 7.2 patient-years in control group and 1 episode every 12 patient-years in the operating vehicle group. There was significant difference between the two groups (0.013). Positive dialysate cultures were obtained in majority of the peritonitis episodes (60.6%). CONCLUSION Operating vehicle might help to reduce PD-related peritonitis by preventing contamination during bag exchange. Further studies are still needed to demonstrate the protective role of the operating vehicle in preventing peritonitis.
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Affiliation(s)
- Pan Fang
- Department of Nephrology, The Second Xiangya Hospital, Central South University, 139 Renmin Road, Changsha, 410011, Hunan, China.,Institute of Nephrology, Central South University, Changsha, 410011, Hunan, China
| | - Jia Lu
- Department of Nephrology, The Second Xiangya Hospital, Central South University, 139 Renmin Road, Changsha, 410011, Hunan, China.,Institute of Nephrology, Central South University, Changsha, 410011, Hunan, China
| | - Ying-Hong Liu
- Department of Nephrology, The Second Xiangya Hospital, Central South University, 139 Renmin Road, Changsha, 410011, Hunan, China.,Institute of Nephrology, Central South University, Changsha, 410011, Hunan, China
| | - Hong-Mei Deng
- Department of Nephrology, The Second Xiangya Hospital, Central South University, 139 Renmin Road, Changsha, 410011, Hunan, China.,Institute of Nephrology, Central South University, Changsha, 410011, Hunan, China
| | - Lei Zhang
- Department of Nephrology, The Second Xiangya Hospital, Central South University, 139 Renmin Road, Changsha, 410011, Hunan, China.,Institute of Nephrology, Central South University, Changsha, 410011, Hunan, China
| | - Hong-Qing Zhang
- Department of Nephrology, The Second Xiangya Hospital, Central South University, 139 Renmin Road, Changsha, 410011, Hunan, China. .,Institute of Nephrology, Central South University, Changsha, 410011, Hunan, China.
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Gan HQ, Wang Q, Zhang H, Liu X, Deng HM, Song HP, Wang ZQ, Li QJ. [Effects of RGD peptides-grafted porous tantalum on morphological change of MG63 osteoblasts-tantalum conjunctive interface and expression of osteogenesis factors]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:176-182. [PMID: 29483743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To investigate the effects of the Arg-Gly-Asp polypeptedes (RGD) peptides-modified porous tantalum surface on osteoblasts morphology and expressions of osteogenesis factors, and to evaluate RGD peptides promotes junctura ossium of tantalum-bone interface in vivo. METHODS RGD peptides of different concentrations (1 g/L, 5 g/L, and 10 g/L) were loaded to porous tantalum slices with a diameter of 10 mm and a thickness of 3 mm by physical absorption. The 3rd generation of MG63 cells were co-cultured with tantalum and divided into 4 groups: Ta-cells (control) group, 1 g/L cells/Ta/RGD group, 5 g/L cells/Ta/RGD group, and 10 g/L cells/Ta/RGD group. Porous tantalum compo-sites and osteoblasts-tantalum interface were observed by scanning electron microscopy. The adhesion rate of osteoblasts was detected and immunocytochemistry was used to detect the expressions of filamentous actin (F-actin), osteocalcin (OC) and fibronectin (FN). RESULTS The scanning electron microscope (SEM) revealed that osteoblasts distributed on the surface of porous tantalum and secreted extracellular matrix on outside and inner of micro-pores. The osteoblasts adhesion rate on porous tantalum modified with RGD was higher than that in the unmodified porous tantalum at the end of 24, 48, and 72 hours. The best adhesion effect was got in 5 g/L cells/Ta/RGD group at hour 48 [(68.07±3.80) vs. (23.40±4.39), P<0.05]. The results of immunocytochemistry showed that the expressions intensity of F-actin, OC and FN in osteoblasts on porous tantalum modified groups with RGD were stronger than that in the unmodified groups, and the expressions of 5 g/L cells/Ta/RGD group were significantly higher than those in the 10 g/L group and 1 g/L group [OC: (18.08±0.08) vs. (15.14±0.19), P<0.05; (18.08±0.08) vs. (14.04±0.61), P<0.05. FN: (24.60±0.98) vs. (15.90±0.53), P<0.05; (24.60±0.98) vs. (15.30±0.42), P<0.05. F-actin: (29.20±1.31) vs. (24.50±1.51), P<0.05; (29.20±1.31) vs. (16.92±0.40), P<0.05]. Correspondingly F-actin in osteoblasts was showed in longitudinal arrangement, and the expressions intensity was stronger than those OC and FN. CONCLUSION The RGD peptides is beneficial to enhance adhesion of osteoblast, spreading and reorganization of cytoskeleton on porous tantalum surface and improve the interface morphology, further promoting osteoblasts-tantalum conjunctive interface osseointegration.
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Affiliation(s)
- H Q Gan
- Department of Orthopaedics, Affiliated Hospital, North China University of Science and Technology, Tangshan 063000, Hebei, China
| | - Q Wang
- Department of Anatomy, Basic Medical College, North China University of Science and Technology, Tangshan 063000, Hebei, China
| | - H Zhang
- Department of Joint Surgery, the Second Hospital of Tangshan, Tangshan 063000, Hebei, China
| | - X Liu
- Department of Clinical Laboratory, Kailuan General Hospital, Tangshan 063000, Hebei, China
| | - H M Deng
- Department of Orthopaedics, Affiliated Hospital, North China University of Science and Technology, Tangshan 063000, Hebei, China
| | - H P Song
- Department of Orthopaedics, Affiliated Hospital, North China University of Science and Technology, Tangshan 063000, Hebei, China
| | - Z Q Wang
- Department of Orthopaedics, Affiliated Hospital, North China University of Science and Technology, Tangshan 063000, Hebei, China
| | - Q J Li
- Experimental Center, North China University of Science and Technology; Tangshan 063000, Hebei, China
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Wang C, Fu X, Yang Y, Deng J, Zhang HQ, Deng HM, Lu J, Peng Y, Liu H, Liu FY, Liu Y. A Comparison between Intermittent Peritoneal Dialysis and Automatic Peritoneal Dialysis on Urgent Peritoneal Dialysis. Am J Nephrol 2017; 45:540-548. [PMID: 28531901 DOI: 10.1159/000477178] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2016] [Accepted: 04/27/2017] [Indexed: 11/19/2022]
Abstract
BACKGROUND Urgent-start dialysis is a major problem for incident dialysis population. Urgent start on hemodialysis is associated with an increased risk of infectious or mechanical complications, and its mortality is equal to or higher than that of urgent start on peritoneal dialysis (PD). However, compared to patients starting PD in a planned setting, those on urgent-started PD have an increased risk of mechanical complications and lower technique survival. METHODS In this study, 101 adult incident dialysis patients (≥18 years old) who underwent Tenckhoff catheter implantation were enrolled. All of the patients were grouped according to the urgent PD mode: the intermittent PD (IPD) or automatic PD (APD) group, and patients were followed for 1 year. The paired or independent t test was used to analyze the change of laboratory variables. Pearson chi-square test was applied to compare the short outcome between the 2 groups. RESULTS When PD was treated for 7 days and 1 month, the APD group has the lower serum potassium and phosphorus levels than the IPD group. The incidence of catheter dysfunction was significantly lower in the APD group. The morbidity of infection associated with PD in the first year was lower in the APD group despite no significant difference existing. The technique survival and patient survival rate have no evident difference between the 2 groups. CONCLUSION Compared to IPD, urgent start on APD could reduce the risk of mechanical complication, which could be considered a gentle, safe, and feasible alternative to urgent start on IPD.
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Affiliation(s)
- Chang Wang
- Department of Nephrology, The Second Xiangya Hospital, Changsha, China
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Hu D, Luo W, Fan LF, Liu FL, Gu J, Deng HM, Zhang C, Huang LH, Feng QL. Dynamics and regulation of glycolysis-tricarboxylic acid metabolism in the midgut of Spodoptera litura during metamorphosis. Insect Mol Biol 2016; 25:153-162. [PMID: 26683413 DOI: 10.1111/imb.12208] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Significant changes usually take place in the internal metabolism of insects during metamorphosis. The glycolysis-tricarboxylic acid (glycolysis-TCA) pathway is important for energy metabolism. To elucidate its dynamics, the mRNA levels of genes involved in this pathway were examined in the midgut of Spodoptera litura during metamorphosis, and the pyruvate content was quantified. The expression patterns of these genes in response to starvation were examined, and the interaction between protein phosphatase 1 (PP1) and phosphofructokinase (PFK) was studied. The results revealed that the expression or activities of most glycolytic enzymes was down-regulated in prepupae and then recovered in some degree in pupae, and all TCA-related genes were remarkably suppressed in both the prepupae and pupae. Pyruvate was enriched in the pupal midgut. Taken together, these results suggest that insects decrease both glycolysis and TCA in prepupae to save energy and then up-regulate glycolysis but down-regulate TCA in pupae to increase the supply of intermediates for construction of new organs. The expression of all these genes were down-regulated by starvation, indicating that non-feeding during metamorphosis may be a regulator of glycolysis-TCA pathway in the midgut. Importantly, interaction between PP1 and PFK was identified and is suggested to be involved in the regulation of glycolysis.
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Affiliation(s)
- D Hu
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
| | - W Luo
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
| | - L F Fan
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
| | - F L Liu
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
| | - J Gu
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
| | - H M Deng
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
| | - C Zhang
- Guangdong Provincial Key Laboratory of High Technology for Plant Protection, Institute of Plant Protection, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - L H Huang
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Q L Feng
- Guangzhou Key Laboratory of Insect Development Regulation and Application Research, School of Life Sciences, South China Normal University, Guangzhou, China
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Deng HM, Hu SL, Chen WX, Huang Y. [Meta-analysis of anti-GP210 antibody and anti-SP100 antibody detection for diagnosis of primary biliary cirrhosis]. Zhonghua Gan Zang Bing Za Zhi 2016; 24:62-8. [PMID: 26983392 DOI: 10.3760/cma.j.issn.1007-3418.2016.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To conduct a systematic review of studies assessing the association of anti-GP210 antibody and anti-SP100 antibody with diagnosis of primary biliary cirrhosis (PBC) using meta-analysis. METHODS Five research literature databases, including the Cochrane Library, MEDLINE, VIP, CNKI and WanFang, were searched for studies of anti-GP210 antibody and anti-SP100 antibody in diagnosis of PBC. Meta-disc statistical software was used for analysis. RESULTS The meta-analysis included a total of 25 studies on anti-GP210 antibody and 21 studies on anti-SP100 antibody. The diagnostic odds ratio, sensitivity, and specificity of anti-GP210 antibody for diagnosis of PBC were 24.854 (11.957-51.660), 0.272 (0.257-0.288), and 0.985 (0.982-0.988), respectively, and for anti-SP100 antibody they were 9.133 (4.739-17.600), 0.231 (0.213-0.249), and 0.977 (0.973-0.981), respectively. CONCLUSIONS Both anti-GP210 antibody and anti-SP100 antibody show high specificity but low sensitivity in diagnosis of PBC.
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Affiliation(s)
- H M Deng
- Key Laborator of Molecular Biology for Infectious Diseases, Ministry of Education, Institute for Viral Hepatitis, Department of Infectious Diseases, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - S L Hu
- Key Laborator of Molecular Biology for Infectious Diseases, Ministry of Education, Institute for Viral Hepatitis, Department of Infectious Diseases, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - W X Chen
- Department of Laboratory, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
| | - Y Huang
- Key Laborator of Molecular Biology for Infectious Diseases, Ministry of Education, Institute for Viral Hepatitis, Department of Infectious Diseases, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400010, China
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Cheng HN, Zou YH, Zhang JM, He SS, Shen SB, Deng HM. Facile and efficient synthesis of fluorinated fullerene-fused 1,3-dioxolanes: reaction of C60 with fluorinated aromatic aldehyde mediated by lithium perchlorate. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.06.038] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Wu CQ, Chen DY, Feng YS, Deng HM, Liu YH, Zhou AJ. Determination of Estrogens in Water Samples by Ionic Liquid-Based Dispersive Liquid-Liquid Microextraction Combined with High Performance Liquid Chromatography. ANAL LETT 2012. [DOI: 10.1080/00032719.2012.680086] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Deng HM, Xu Y, Gu YD. Studies on monodispersed colloidal particles of doped yttrium compounds. CHINESE J CHEM 2010. [DOI: 10.1002/cjoc.19950130303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Deng HM, Chen YH, Chang XY. [Distribution and partition of polycyclic aromatic hydrocarbons (PAHs) in the Gaoyao section of Xijiang River]. Huan Jing Ke Xue 2009; 30:3276-3282. [PMID: 20063740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
To obtain the seasonal and vertical distribution and partition of PAHs between dissolved phase and particle phase in Xijiang River basin, water columns were collected during flood seasons (August, 2003 and July, 2004) and dry seasons (November, 2003 and Mar, 2004) from Gaoyao section of Xijiang River. The average PAHs concentrations in dissolved phase and particle phase were 21.7-138 ng x L(-1), 40.9-664.8 microg x kg(-1), respectively. Total PAHs concentrations (both particle phase and dissolved phase) were higher in flood seasons than that in dry seasons. No variation was found for dissolved PAHs in vertical distribution. However, a same trend of vertical distribution was observed for particle PAHs with the maximum concentration in middle layer and minimum in surface layer of water column. With increasing of content of suspended particle matter (SPM), both dissolved and particle PAHs concentration increased. In the dissolved phase, the predominant PAHs were 3 ring PAHs. While in the particle phase, 3-4 ring PAHs were the dominant PAHs. The partition coefficient (K(p)) had no correlation with the particle organic carbon content of SPM (R2 0.000 1-0.2), but influenced by concentrations of suspended particle matters and dissolved organic carbon, especially black carbon in dissolved phase (R2 0.15 -0.36). A majority of values of lg K(oc) in different seasons exceeded upper limit based on typical model of equilibrium distribution. Except the season of November 2003 (R2 0.000 4-0.12, p < 0.001), the organic carbon normalized distribution coefficients (K(oc)) computed for the PAHs were correlated well with their octanol-water partition coefficient (K(ow))(R2 0.29-0.91, p < 0.05). The lipophilic ability of SPM was stronger in flood seasons than that in dry seasons.
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Affiliation(s)
- Hong-Mei Deng
- School of Environmental Science and Engineering, Guangzhou University, Guangzhou 510006, China.
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Zhang H, Cao WG, Ren ZJ, Chen J, Sun RS, Hu JR, Qian JX, Deng HM. Simple Approach to the Highly Stereoselective Synthesis oftrans-1,2-Cyclopropane Derivatives. CHINESE J CHEM 2007. [DOI: 10.1002/cjoc.200790221] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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