检索结果-南通市图书馆

Enhanced methane production during long-term UASB operation at high organic loads as enabled by the immobilized Fungi

在线全文

学校读者我要写书评

暂无评论

Frontiers of Environmental Science & Engineering 2022年第6期16卷 47-59页

作者： qiong guo Zhichao Yang Bingliang Zhang Ming Hua Changhong Liu Bingcai Pan State Key Laboratory of Pollution Control and Resource Reuse School of EnvironmentNanjing UniversityNanjing 210023China Research Center for Environmental Nanotechnology(ReCENT) Nanjing UniversityNanjing 210023China School of Life Sciences Nanjing UniversityState Key Laboratory of Pharmaceutical BiotechnologyNanjing 210023China

Anaerobic digestion is widely applied in organic wastewater treatment coupled with bioenergy production,and how to stabilize its work at the high organic loading rate(OLR)remains a ***,we proposed a new strategy to address this issue via involving the synergetic role of the Aspergillus sydowii 8L-9-F02 immobilized beads(AEBs).A long-term(210-day)continuous-mode operation indicated that the upflow anaerobic sludge bed(UASB)reactor(R1,with AEBs added)could achieve the OLR as high as 25.0 kg/(m^(3)×d),whereas the control reactor(R0,with AEBs free)could only tolerate the maximum OLR of 13.3 kg/(m^(3)×d).Remarkably,much higher COD removal(85.9%vs 23.9%)and methane production(5.4 m^(3)/(m^(3)×d)vs 2.2 m^(3)/(m^(3)×d))were achieved in R1 than R0 at the OLR of 25.0 kg/(m^(3)×d).Such favorable effect results from the facts that fungi inhibit VFAs accumulation,favor the pH stabilization,promote the generation of more extracellular polymeric substance,and enhance the sludge granulation and ***,fungi may enhance the secretion of acetyl-coenzyme A,a key compound in converting organic matters to CO_(2).In addition,fungi are favorable to enrich methanogenic archaea even at high OLR,improving the activity of acetate kinase and coenzyme F_(420) for more efficient methanogenic *** work may shed new light on how to achieve higher OLR and methane production in anaerobic digestion of wastewater.

关键词： Anaerobic digestion Fungi Methane production High OLR Microbial community

Quantum discord and its dynamics for multipartite systems

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2024年第6期33卷 168-175页

作者：罗嘉欣郭琼 College of Sciences Shanghai Institute of TechnologyShanghai 201418China

Quantum discord, one of the famous quantum correlations, has been recently generalized to multipartite systems by Radhakrishnan et al. Here we give analytical solutions of the quantum discord for a family of N-qubit quantum states. For the bipartite system, we derive a zero quantum discord which will remain unchanged under the phase damping channel. For multiparitite systems, it is found that the quantum discord can be classified into three categories and the quantum discord for odd-partite systems can exhibit freezing under the phase damping channel, while the freezing does not exist in the even-partite systems.

关键词： quantum discord multipartite systems decoherence channels frozen discord

Preparation of nano-TiO_2 photocatalysts and their decomposition activity in phenol-contaminated water

在线全文

学校读者我要写书评

暂无评论

Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第11期10卷 1651-1659页

作者： Xiao-yuan JIANG Feng DU Chun-xia guo qiong YANG Xiao-ming ZHENG Institute of Catalysis Faculty of Science Zhejiang University Hangzhou 310028 China

ZiO2 was prepared by the hydrolyzation method in （NH4）2SO4-modified TiCl4 solution, and TiO2 photocatalysts were obtained by accelerating the precipitation of TiO2 powder in a high-temperature water bath. The photocatalysts were characterized by Brunauer-Emmett-Teller （BET）, X-ray diffraction （XRD）, Raman spectrum and UV-Vis （Ultraviolet-Visible） spectrometry techniques, and the photocatalytic activity in phenol-contaminated water was investigated. The results showed that photocatalysts calcined at 400 ℃ had a specific surface area of 138.2 m^2/g and an average particle size of 9 nm, and a significant increase in thermal stability of anatase phase. At the calcination temperature of 700 ~C, the crystal form of TiO2 started to change into rutile （anatase： 97%, rutile： 3%）. The activity of TiO2 photocatalysts prepared with （NH4）2SO4-modified TIC14 solution was markedly stronger than that without （NH4）2SOg-modified TIC14 solution. Maximal photocatalytic activity was observed at the mole ratio of Ti：（NH4）2SO4= 1：2, the water-bath temperature of 90℃ and the calcination temperature of 700 ℃.

关键词： Ammonium sulfate Titanium dioxide Photocatalysis reaction Phenol-contaminated water

Nursing model of midwifery and postural and psychological interventions:Impact on maternal and fetal outcomes and negative emotions of primiparas

在线全文

学校读者我要写书评

暂无评论

World Journal of Psychiatry 2023年第8期13卷 543-550页

作者： Ping Gao Cai-qiong guo Ma-Yu Chen Hui-Ping Zhuang Department of Obstetrics and Gynecology Quanzhou Maternity and Child Healthcare HospitalQuanzhou 362017Fujian ProvinceChina School of Nursing Fujian Medical UniversityQuanzhou 350108Fujian ProvinceChina Department of Obstetrics and Gynecology The 910th Hospital of the People's Liberation Army Joint Logistic Support ForceQuanzhou 362008Fujian ProvinceChina

BACKGROUND Primiparas are usually at high risk of experiencing perinatal depression,which may cause prolonged labor,increased blood loss,and intensified pain,affecting maternal and fetal ***,interventions are necessary to improve maternal and fetal outcomes and alleviate primiparas’negative emotions(NEs).AIM To discusses the impact of nursing responsibility in midwifery and postural and psychological interventions on maternal and fetal outcomes as well as primiparas’*** As participants,115 primiparas admitted to Quanzhou Maternity and Child Healthcare Hospital between May 2020 and May 2022 were *** them,56 primiparas(control group,Con)were subjected to conventional midwifery and routine *** remaining 59(research group,Res)were subjected to the nursing model of midwifery and postural and psychological *** groups were comparatively analyzed from the perspectives of delivery mode(cesarean,natural,or forceps-assisted),maternal and fetal outcomes(uterine inertia,postpartum hemorrhage,placental abruption,neonatal pulmonary injury,and neonatal asphyxia),NEs(Hamilton Anxiety/Depressionrating Scale,HAMA/HAMD),labor duration,and nursing *** The Res exhibited a markedly higher natural delivery rate and nursing satisfaction than the ***,the Res indicated a lower incidence of adverse events(e.g.,uterine inertia,postpartum hemorrhage,placental abruption,neonatal lung injury,and neonatal asphyxia)and shortened duration of various stages of *** also showed statistically lower post-interventional HAMA and HAMD scores than the Con and pre-interventional *** The nursing model of midwifery and postural and psychological interventions increase the natural delivery rate and reduce the duration of each labor *** are also conducive to improving maternal and fetal outcomes and mitigating primiparas’NEs and thus deserve popularity in clinical practice.

关键词： Nursing model of midwifery Postural intervention Primipara Maternal and fetal outcomes Negative emotions

Comparative analysis of cytochrome P450-like genes from Locusta migratoria manilensis： expression profiling and response to insecticide exposure

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Insect Science 2012年第1期19卷 75-85页

作者： Yan-qiong guo Jian-Zhen Zhang Mei-Ling Yang Liang-Zhen Yan Kun Yan Zhu Ya-Ping guo En-Bo Ma Institute of Appfied Biology Shanxi UniversityTaiyuan College of Agriculture Shanxi Agricultural UniversityTaiguShanxi ProvinceChina Department of Entomology Kansas State UniversityManhattanKansasUSA

The cytochrome P450 monooxygenase （cytochrome P450） gene superfamily comprises many genes that may be involved in the biotransformations of pesticides and other xenobiotics. To date, very little is known about cytochrome P450 genes in the oriental migratory locust, Locusta migratoria manilensis. In this study, we carried out a genomewide analysis ofcytochrome P450 genes of the locust to identify putative cytochrome P450 genes and characterize their expression responses to insecticide exposures. We identified 15 cytochrome P450-1ike genes from a locust expressed sequence tag database （LocustDB）. Reverse transcription polymerase chain reaction （RT-PCR） analysis showed that most cytochrome P450-1ike genes displayed different tissue and developmental stage expression patterns. However, most of them were predominantly expressed in the midgnt, gastric caeca, fatbodies, and/or hindgut. Biochemical analysis showed that cytochrome P450 was differentially affected by three different insecticides. Deltamethrin caused significant inductions in 12 h at LD30 （dose to kill 30% of the tested individuals） in the nymphs, whereas malathion and carbaryl did not have significant effect on cytochrome P450 enzyme activity. Further RT-PCR analysis Showed significant increases of transcriptions of several cytochrome P450 genes in deltamethrin-treated locusts. Thus, the increased cytochrome P450 enzyme activity is likely due to increased transcriptions of multiple cytochrome P450 genes in response to deltamethrin exposure. These results are expected to help us better understand the interactions between insecticides and major detoxification enzymes, and possible changes of the susceptibility to other insecticides in deltamethrin-treated insects at various molecular levels.

关键词： cytochrome P450 monooxygenase deltamethrin gene expression profiling insecticide Locusta migratoria manilensis

HPLC Fingerprint and LC/MS/MS Identification of the Active Components in Radix Salviae Miltiorrhizae

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

有机化学 2004年第z1期24卷 314-315页

作者： HU,Ping LIANG,qiong-Lin LUO,guo-An JIANG,Zhi-Hong School of Chinese Medicine Hong Kong Baptist University Hong Kong School of Chemistry and Pharmaceutics East China University of Science and Technology Shanghai 200237 Analysis Center Tsinghua University Beijing 100084 School of Chemistry and Pharmaceutics East China University of Science and Technology Shanghai 200237 Analysis Center Tsinghua University Beijing 100084 School of Chinese Medicine Hong Kong Baptist University Hong Kong

　　Radix Salviae Miltiorrhizae (丹参, RSM), an important Chinese Materia Medica, is widely used for cardiovascular diseases in China. Phenolic compounds[1] and diterpenoids[2] which are the major constituents of RSM have been reported to protect myocardium against ischemia-induced derangement, protect neural cells against injuries caused by anoxia,inhibit platelet aggregation, reduce hepatic fibrosis and depress the activities of HIV-1.[3] For the purposes of establishing quality standard of RSM and studying the relationship between the pharmacological activities and quantities of constituents, we conducted studies on HPLC fingerprint and LC-MS-MS identification of the active constituents of RSM.……

关键词： Radix Salviae Miltiorrhizae Active Components pharmacological activities cardiovascular diseases Chinese Materia Medica platelet aggregation identification of hepatic fibrosis 丹参

Phylogenetic Relationships of Sorghum and Related Species Inferred from Sequence Analysis of the nrDNA ITS Region

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Agricultural Sciences in China 2006年第4期5卷 250-256页

作者： guo qiong-xia HUANG Ke-hui YU Yun HUANG Zhen WU Zhen-quan Fujian Entry-Exit Inspection and Quarantine Bureau Fuzhou 350001 P.R.China Fujian Agriculture and Forestry University Fuzhou 350002 P.R. China

Analysis of phylogenetic and evolution in six species of Sorghum was based on internal transcribed spacer （ITS） sequences in nuclear ribosomal DNA. Results showed that the length of the ITS regions among the six species ranged from 588 to 589 bp and the contents of G＋C in ITS （ITS1 ＋5.8S＋ITS2） regions ranged from 60.27 to 61.05%; the length of ITS1 ranged from 207 to 208 bp and the contents of G ＋ C in the ITS 1 regions ranged from 53.91 to 61.54%. The length of the 5.8S rDNA and ITS2 regions in the six species was 164 and 217 bp respectively, and the contents of G ＋ C ranged from 56.10 to 58.54% in the 5.8S rDNA region and 66.36 to 67,28% in the ITS2 region. Among regions of ITS, ITS1, ITS2, and 5.8S, the best sequence for genetic relationship analysis in the six species was the ITS region. On the basis of the Jaccard coefficient and phylogentic tree, S. sp. was more related to S, propinguum than to other species. This was consistent with the fact that S. sp. is derived from S. propinguum. From the phylogenetic tree based on ITS1, S. halepense, silk sorghum and S. sudanense, are identical in the ITS 1 sequence, whereas the phylogenetic tree based one shows that S. sudanense has a closer genetic association with S. almum rather than with S. halepense and silk sorghum.

关键词： Sorghum ITS phylogenetic relationship

Detection of Image Compositing Based on a Statistical Model for Natural Images

在线全文

学校读者我要写书评

暂无评论

自动化学报 2009年第12期35卷 1564-1567页

作者： SUN Shao-Jie WU qiong LI guo-Hui College of Information System and Management National University of Defense Technology Changsha 410073 P. R. China

Nowadays,digital images can be easily tampered due to the availability of powerful image processing software. As digital cameras continue to replace their analog counterparts, the importance of authenticating digital images,identifying their sources,and detecting forgeries is *** image forensies is used to analyze an image in the complete absence of any digital watermark or *** compositing is the most common form of digital *** that image compositing operations affect the inherent statistics of the image,we propose an image compositing detection method on based on a statistical model for natural image in the wavelet transform *** generalized Gaussian model(GGD)is employed to describe the marginal distribution of wavelet coefficients of images,and the parameters of GGD are obtained using maximum likelihood *** statistical features include GGD parameters,prediction error,mean,variance,skewness,and kurtosis at each wavelet detail ***,these feature vectors are used to discriminate between natural images and composite images using support vector machine(SVM).To evaluate the performance of our proposed method,we carried out tests on the Columbia Uncompressed Image Splicing Detection Dataset and another advanced dataset,and achieved a detection accuracy of 92% and 79%.*** detection performance of our method is better than that of the method using cameraresponse function on the same dataset.

关键词：图像处理技术图像合成数字干扰软件

A valid evaluation method for UPLC fingerprint analysis and moisture ratio prediction model:application to microwave vacuum drying of Radix isatidis extract

在线全文

学校读者我要写书评

暂无评论

Traditional Medicine Research 2022年第3期7卷 90-97页

作者： You-Lu Li guo Qing Ning Zhang Yong-Ping Zhang Yan-Yan Miao guo-qiong Cao Jian Xu College of Pharmaceutical Sciences Guizhou University of Traditional Chinese MedicineGuiyang 550025China National Research Center of Miao Medicine Engineering Technology Guiyang 550025China Guizhou Research Center of Traditional Chinese Medicine Processing and Preparation Engineering Technology Guiyang 550025China

Background:Drying is a necessary component of traditional Chinese medicine *** heating principle of microwave vacuum drying is different from that of the conventional heat ***,at present,there is paucity of information on the drying process of traditional Chinese medicine extract by microwave vacuum drying,and the results of such process are ***:To study the dynamic changes in the chemical characteristics of microwave vacuum drying under different drying conditions,ultrahigh-performance liquid chromatography fingerprint profiles were established using Radix isatidis extract as a model drug and analyzed using similarity analysis,partial least squares-discriminant analysis,and semi-quantitative *** addition,a backpropagation artificial neural network model was developed to predict the moisture ratio of the drying ***:Qualitative results showed that the similarity between different drying conditions was greater than 0.95,and 2 amino acid components(peaks 5 and 6)affected by process fluctuations were screened *** quantitative results showed that the mass concentration of component 1 fluctuated after drying,while that of component 2 *** optimal backpropagation artificial neural network model structure used to predict the moisture ratio was 5-4-1,with regression and mean squared error values of 0.996 and 0.0003,respectively,after training,which were well fitted and had a strong approximation ***:Upon comparison of fingerprints and the evaluation of statistical methods,common components of Radix isatidis extract had little variation under different drying conditions,and the selected components provided a reference for the establishment of process evaluation *** establishment of backpropagation artificial neural network provides a theoretical basis for the application of microwave vacuum drying technology and online monitoring of moisture ratio.

关键词： Radix isatidis extract microwave vacuum drying ultrahigh-performance liquid chromatography fingerprint analysis moisture ratio prediction