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  1. Article ; Online: Molybdenum(V)-mediated switching of the C(sp

    Zhang, Ming / Nian, Beifang / Wu, Zhibang / Guo, Jianhua / Chen, Zhuo / Yuan, Caifeng / Huang, Xuankun / Shen, Yiwen / Zhang, Hongbin / Tang, E

    Chemical communications (Cambridge, England)

    2023  Volume 59, Issue 49, Page(s) 7599–7602

    Abstract: Molybdenum(V)-mediated cleavage of C(sp ...

    Abstract Molybdenum(V)-mediated cleavage of C(sp
    MeSH term(s) Molybdenum ; Catalysis ; Oxidation-Reduction ; Selenium/chemistry
    Chemical Substances Molybdenum (81AH48963U) ; Selenium (H6241UJ22B)
    Language English
    Publishing date 2023-06-15
    Publishing country England
    Document type Journal Article
    ZDB-ID 1472881-3
    ISSN 1364-548X ; 1359-7345 ; 0009-241X
    ISSN (online) 1364-548X
    ISSN 1359-7345 ; 0009-241X
    DOI 10.1039/d3cc01119d
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Metal-Organic Framework Derived Hierarchical Co/C@V

    Zhou, Chenhui / Wu, Chen / Liu, Dong / Yan, Mi

    Chemistry (Weinheim an der Bergstrasse, Germany)

    2019  Volume 25, Issue 9, Page(s) 2234–2241

    Abstract: ... telecommunication devices. Herein, hierarchical metal-organic framework (MOF)-derived Co/C@V ...

    Abstract Developing high-efficiency electromagnetic (EM) wave absorbing materials with light weight, thin thickness, and wide absorption bandwidth is highly desirable for ever-developing electronic and telecommunication devices. Herein, hierarchical metal-organic framework (MOF)-derived Co/C@V
    Language English
    Publishing date 2019-01-11
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1478547-x
    ISSN 1521-3765 ; 0947-6539
    ISSN (online) 1521-3765
    ISSN 0947-6539
    DOI 10.1002/chem.201805565
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: A Novel Gold Film-Coated V-Shape Dual-Core Photonic Crystal Fiber Polarization Beam Splitter Covering the E + S + C + L + U Band.

    Qu, Yuwei / Yuan, Jinhui / Qiu, Shi / Zhou, Xian / Li, Feng / Yan, Binbin / Wu, Qiang / Wang, Kuiru / Sang, Xinzhu / Long, Keping / Yu, Chongxiu

    Sensors (Basel, Switzerland)

    2021  Volume 21, Issue 2

    Abstract: ... the splitting bandwidth (SB) can cover the E + S + C + L + U band. The proposed V-DC-PCF PBS has the ultra-short ... In this paper, a novel gold film-coated V-shape dual-core photonic crystal fiber (V-DC-PCF ... of the proposed V-DC-PCF PBS without gold film and with gold film are compared. The fiber structure parameters and ...

    Abstract In this paper, a novel gold film-coated V-shape dual-core photonic crystal fiber (V-DC-PCF) polarization beam splitter (PBS) based on surface plasmon resonance effect is proposed. The coupling lengths of the X-polarization (X-pol) and Y-polarization (Y-pol) and the corresponding coupling length ratio of the proposed V-DC-PCF PBS without gold film and with gold film are compared. The fiber structure parameters and thickness of the gold film are optimized through investigating their effects on the coupling lengths and coupling length ratio. As the propagation length increases, the normalized output powers of the X-pol and Y-pol of the proposed V-DC-PCF PBS at the three wavelengths 1.610, 1.631, and 1.650 μm are demonstrated. The relationships between the extinction ratio (ER), insertion loss (IL) and wavelength for the three splitting lengths (SLs) 188, 185, and 182 μm are investigated. Finally, it is demonstrated that for the proposed V-DC-PCF PBS, the optimal SL is 188 μm, the ILs of the X-pol and Y-pol are less than 0.22 dB, and the splitting bandwidth (SB) can cover the E + S + C + L + U band. The proposed V-DC-PCF PBS has the ultra-short SL, ultra-wide SB, and ultra-low IL, so it is expected to have important applications in the laser, sensing, and dense wavelength division multiplexing systems.
    Language English
    Publishing date 2021-01-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2052857-7
    ISSN 1424-8220 ; 1424-8220
    ISSN (online) 1424-8220
    ISSN 1424-8220
    DOI 10.3390/s21020496
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Efficacy of a woodchip-sediment integrated system in nitrate elimination from wastewater with low C/N condition [Erratum: October 2021, v.21(10), p.3541]

    Shihao, Gong / Cuicui, Tian / Pae, Hong / Donde, Oscar Omondi / Qijia, Cai / Xingqiang, Wu / Chunbo, Wang / Bangding, Xiao

    Journal of soils and sediments. 2021 Oct., v. 21, no. 10 p.3392-3404

    2021  

    Abstract: PURPOSE: Currently, effective methods to eliminate nitrate in wastewater with a low C/N ratio are ... on the C/N ratio. Microbiological analysis indicated co-existence of composting bacteria and denitrifiers ...

    Abstract PURPOSE: Currently, effective methods to eliminate nitrate in wastewater with a low C/N ratio are urgently needed. Considering that sediment is the main nitrogen removal carrier in lakes and that woodchip is an excellent carbon source, this study was undertaken under an integrated system of these two substances to explore the process and efficiency of the denitrification involved. MATERIAL AND METHODS: Using methods of kinetics and molecular biology, denitrification processes involving a woodchip-sediment system were investigated in an up-flow bioreactor (UFBR). Performance indices, functional genes, and microbial community changes in this integrated system were explored through water quality monitoring, quantitative PCR, and high-throughput sequencing. RESULTS AND DISCUSSION: When the hydraulic residence time reached above 3.82 days, the nitrate elimination efficiency could achieve an effective level of higher than 93.3% even under the different flow rates. It was also noted that the nitrate elimination rate in this integrated system fitted the Michaelis–Menten kinetics, a combination of zero-order equation (R² > 0.98) and first-order equation (R² > 0.95). A combination of zero-order kinetic equations of nitrate elimination and total organic carbon (TOC) release exhibited nitrate elimination efficiency under direct influence of TOC release rate on the C/N ratio. Microbiological analysis indicated co-existence of composting bacteria and denitrifiers as well as aerobic degradation and heterotrophic denitrification, with the former process providing effective carbon sources for the latter process. CONCLUSIONS: This study provided a deep insight into the denitrification process of a woodchip-sediment integrated system, which might inspire a potential wastewater treatment method for reduced eutrophication in the aquatic environment.
    Keywords aquatic environment ; bioreactors ; denitrification ; denitrifying microorganisms ; enzyme kinetics ; equations ; eutrophication ; microbial communities ; molecular biology ; nitrates ; nitrogen ; quantitative polymerase chain reaction ; sediments ; total organic carbon ; wastewater ; wastewater treatment ; water quality ; wood chips
    Language English
    Dates of publication 2021-10
    Size p. 3392-3404.
    Publishing place Springer Berlin Heidelberg
    Document type Article ; Online
    ZDB-ID 2050898-0
    ISSN 1614-7480 ; 1439-0108
    ISSN (online) 1614-7480
    ISSN 1439-0108
    DOI 10.1007/s11368-021-02980-5
    Database NAL-Catalogue (AGRICOLA)

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  5. Article ; Online: Oxygen rotational temperature determination using empirical analyses of C(3)Π(v' = 2) ← X(3)Σ(v'' = 0) transitions.

    Adams, Steven F / Wu, Yue / Zhang, Zhili

    Applied spectroscopy

    2015  Volume 69, Issue 9, Page(s) 1036–1041

    Abstract: The spectra of molecular oxygen through C(3)Π(v' = 2) ← X(3)Σ(v'' = 0) transitions have been ... rotational energy levels in O2(C(3)Π(v' = 2)), these empirical analyses are predictably sensitive ...

    Abstract The spectra of molecular oxygen through C(3)Π(v' = 2) ← X(3)Σ(v'' = 0) transitions have been obtained by coherent microwave Rayleigh scattering (radar) from resonance-enhanced multiphoton ionization (REMPI). Measurements of rotational temperatures of molecular oxygen have been demonstrated based on the empirical analyses of the O2 spectra without the requirement of highly resolved rotational features. Three methods, including (1) linewidth fitting, (2) linear fitting, and (3) area fitting have been investigated for temperature measurements within pure oxygen, ambient air, and H2-air and CH4-air flame environments. The first two methods were applied in a moderately low temperature environment with measurement uncertainties less than 11% and 26%, respectively. The area fitting method covered a wider temperature range, from room temperature (~300 K) to flame temperature (~1700 K), with minimal dependence on the fine structures of the O2 spectra. Less elaborate than Boltzmann plot analyses of ultrafine rotational lines from congested upper rotational energy levels in O2(C(3)Π(v' = 2)), these empirical analyses are predictably sensitive to the thermal distribution of molecular oxygen and have been successfully demonstrated as simple and quick methods for remote gas-phase temperature measurement.
    Language English
    Publishing date 2015-09
    Publishing country United States
    Document type Journal Article
    ISSN 1943-3530
    ISSN (online) 1943-3530
    DOI 10.1366/14-07772
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Computational Exploration of Rh(III)/Rh(V) and Rh(III)/Rh(I) Catalysis in Rhodium(III)-Catalyzed C-H Activation Reactions of N-Phenoxyacetamides with Alkynes.

    Yang, Yun-Fang / Houk, K N / Wu, Yun-Dong

    Journal of the American Chemical Society

    2016  Volume 138, Issue 21, Page(s) 6861–6868

    Abstract: ... directing group, and the role of Rh(III)/Rh(I) and Rh(III)/Rh(V) catalysis of C-H functionalizations ... A novel Rh(III)-Rh(V)-Rh(III) cycle successfully rationalizes recent experimental observations by Liu and ... with alkynes in different solvents. Natural Bond Orbital (NBO) analysis confirms the identity of Rh(V ...

    Abstract The selective rhodium-catalyzed functionalization of arenes is greatly facilitated by oxidizing directing groups that act both as directing groups and internal oxidants. We report density functional theory (B3LYP and M06) investigations on the mechanism of rhodium(III)-catalyzed redox coupling reaction of N-phenoxyacetamides with alkynes. The results elucidated the role of the internal oxidizing directing group, and the role of Rh(III)/Rh(I) and Rh(III)/Rh(V) catalysis of C-H functionalizations. A novel Rh(III)-Rh(V)-Rh(III) cycle successfully rationalizes recent experimental observations by Liu and Lu et al. ( Liu , G. Angew. Chem. Int. Ed. 2013 , 52 , 6033 ) on the reactions of N-phenoxyacetamides with alkynes in different solvents. Natural Bond Orbital (NBO) analysis confirms the identity of Rh(V) intermediate in the catalytic cycle.
    Language English
    Publishing date 2016-06-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.6b03424
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Effect of Ultrastructure on Changes of Textural Characteristics between Crisp Grass Carp (Ctenopharyngodon Idellus C.Et V) and Grass Carp (Ctenopharyngodon Idellus) Inducing Heating Treatment.

    Lin, Wan-Ling / Yang, Xian-Qing / Li, Lai-Hao / Hao, Shu-Xian / Wang, Jin-Xu / Huang, Hui / Wei, Ya / Wu, Yan-Yan

    Journal of food science

    2016  Volume 81, Issue 2, Page(s) E404–11

    Abstract: The research studies the ultrastructure effect on texture of crisp grass carp (CGC) and grass carp (GC) fillets inducing heating for 15, 25, and 40 min with boiling water. After heating, the hardness, fracturability, springiness, chewiness, resilience, ... ...

    Abstract The research studies the ultrastructure effect on texture of crisp grass carp (CGC) and grass carp (GC) fillets inducing heating for 15, 25, and 40 min with boiling water. After heating, the hardness, fracturability, springiness, chewiness, resilience, and cohesiveness of CGC were higher than that of raw CGC, whereas the all textural characteristics of heating GC were lower obviously than that of raw GC. The hardness, fracturability, springiness, chewiness, resilience, and cohesiveness of CGC for heating 15 min were higher by 6.3%, 9.0%, 27.0%, 71.8%, 9.4%, and 23.9%, respectively, than that of raw CGC (RCGC). The hardness increasing of CGC flesh with the extension of heating time related closely to more coagulating connective tissue in interstitial spaces, especially relating to smaller muscle fiber diameter and denser muscle fiber density. The more and larger spaces between fiber and fiber with the extension of heating time results in the decrease of cohesiveness and resilience of CGC flesh. For chewiness, the stronger chewiness of cooked CGC associated with more detachment of myofiber-myocommata and fiber-fiber. Overall, the results show that the changes of texture characteristics of CGC fillet with extension of heating time correlates positively with the ultrastructure.
    MeSH term(s) Animals ; Carps ; Connective Tissue ; Cooking ; Hardness ; Heating ; Hot Temperature ; Humans ; Muscles/ultrastructure ; Seafood/analysis ; Species Specificity
    Language English
    Publishing date 2016-02
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 241615-3
    ISSN 1750-3841 ; 0022-1147
    ISSN (online) 1750-3841
    ISSN 0022-1147
    DOI 10.1111/1750-3841.13189
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: Berberine Reduces the Metastasis of Chondrosarcoma by Modulating the α v β 3 Integrin and the PKC δ , c-Src, and AP-1 Signaling Pathways.

    Wu, Chi-Ming / Li, Te-Mao / Tan, Tzu-Wei / Fong, Yi-Chin / Tang, Chih-Hsin

    Evidence-based complementary and alternative medicine : eCAM

    2013  Volume 2013, Page(s) 423164

    Abstract: ... cell surface expression of, the α v β 3 integrin, with additional inhibitory effects on PKC δ , c-Src ...

    Abstract Chondrosarcoma is a primary malignant bone cancer, with a potent capacity to invade locally and cause distant metastasis, especially to the lungs. Patients diagnosed with chondrosarcoma have poor prognosis. Berberine, an active component of the Ranunculaceae and Papaveraceae families of plant, has been proven to induce tumor apoptosis and to prevent the metastasis of cancer cells. However, the effects of berberine in human chondrosarcoma are largely unknown. In this study, we found that berberine did not induce cell apoptosis in human primary chondrocytes and chondrosarcoma cells. However, at noncytotoxic concentrations, berberine reduced the migration and invasion of chondrosarcoma cancer cells. Integrins are the major adhesive molecules in mammalian cells and have been associated with the metastasis of cancer cells. We also found that incubation of chondrosarcoma cells with berberine reduced mRNA transcription for, and cell surface expression of, the α v β 3 integrin, with additional inhibitory effects on PKC δ , c-Src, and NF- κ B activation. Thus, berberine may be a novel antimetastasis agent for the treatment of metastatic chondrosarcoma.
    Language English
    Publishing date 2013-08-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2171158-6
    ISSN 1741-4288 ; 1741-427X
    ISSN (online) 1741-4288
    ISSN 1741-427X
    DOI 10.1155/2013/423164
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Regulation of blood-brain barrier permeability by transient receptor potential type C and type v calcium-permeable channels.

    Brown, Rachel C / Wu, Ling / Hicks, Kali / O'neil, Roger G

    Microcirculation (New York, N.Y. : 1994)

    2008  Volume 15, Issue 4, Page(s) 359–371

    Abstract: ... endothelial cells was blocked by transient receptor potential C inhibitors. Transient receptor potential V ... demonstrate that transient receptor potential C and transient receptor potential V channels mediate calcium ... potential V blocker or by removal of extracellular calcium. Barrier integrity was compromised by thrombin ...

    Abstract Objective: To identify plasma membrane ion channels mediating calcium influx at the blood-brain barrier in response to disrupting stimuli.
    Methods: We examined the expression and function of candidate transient receptor potential channels using reverse transcriptase polymerase chain recation, Fura-2 calcium imaging, and permeability assays.
    Results: Immortalized mouse brain microvessel endothelial cells expressed multiple transient receptor potential isoforms: transient receptor potential C1, C2, C4, and C7, M2, M3, M4, and M7, and V2 and V4. Similar profiles were observed in freshly isolated cerebral microvessels and primary cultured rat brain endothelial cells. Thrombin-stimulated calcium influx in brain endothelial cells was blocked by transient receptor potential C inhibitors. Transient receptor potential V activating stimuli also increased intracellular calcium. This increase was inhibited by a transient receptor potential V blocker or by removal of extracellular calcium. Barrier integrity was compromised by thrombin, hypo-osmolar stress, and PMA treatment. The increase in barrier permeability induced by transient receptor potential V activators was blocked by transient receptor potential V inhibition, while thrombin effects were inhibited by transient receptor potential C inhibitors.
    Conclusions: These results demonstrate that transient receptor potential C and transient receptor potential V channels mediate calcium influx at the blood-brain barrier, and as a consequence, may modulate barrier integrity.
    MeSH term(s) Animals ; Blood-Brain Barrier/cytology ; Blood-Brain Barrier/metabolism ; Calcium/metabolism ; Calcium Channel Blockers/pharmacology ; Cell Line ; Endothelial Cells/cytology ; Endothelial Cells/metabolism ; Mice ; Osmotic Pressure/drug effects ; Permeability/drug effects ; TRPC Cation Channels/antagonists & inhibitors ; TRPC Cation Channels/metabolism ; TRPV Cation Channels/antagonists & inhibitors ; TRPV Cation Channels/metabolism ; Thrombin/pharmacology
    Chemical Substances Calcium Channel Blockers ; TRPC Cation Channels ; TRPV Cation Channels ; Thrombin (EC 3.4.21.5) ; Calcium (SY7Q814VUP)
    Language English
    Publishing date 2008-05-08
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1217758-1
    ISSN 1549-8719 ; 1073-9688
    ISSN (online) 1549-8719
    ISSN 1073-9688
    DOI 10.1080/10739680701762656
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: c-Kit in early onset of diabetes: a morphological and functional analysis of pancreatic beta-cells in c-KitW-v mutant mice.

    Krishnamurthy, Mansa / Ayazi, Farzam / Li, Jinming / Lyttle, Alexander W / Woods, Michael / Wu, Yuexiu / Yee, Siu-Pok / Wang, Rennian

    Endocrinology

    2007  Volume 148, Issue 11, Page(s) 5520–5530

    Abstract: ... mouse, c-Kit(W-v/+), to evaluate the in vivo role of c-Kit in beta-cell growth and function. Here ... we report that male c-Kit(W-v/+) mice, at 8 wk of age, showed high fasting blood glucose levels and impaired ... c-Kit(W-v/+) mice when compared with controls (c-Kit(+/+)) (P < 0.05). In parallel, a reduction ...

    Abstract c-Kit tyrosine receptor kinase, a well-established stem cell marker, is expressed in a variety of tissues including the pancreas. The involvement of c-Kit in fetal rat and human endocrine pancreatic development, survival, and function has been well characterized but primarily using in vitro experimental approaches. Therefore, the aim of the current study was to examine whether deficiency of a functional c-Kit receptor would have physiological and functional implications in vivo. We characterized the c-Kit mutant mouse, c-Kit(W-v/+), to evaluate the in vivo role of c-Kit in beta-cell growth and function. Here we report that male c-Kit(W-v/+) mice, at 8 wk of age, showed high fasting blood glucose levels and impaired glucose tolerance, which was associated with low levels of insulin secretion after glucose stimulation in vivo and in isolated islets. Morphometric analysis revealed that beta-cell mass was significantly reduced (50%) in male c-Kit(W-v/+) mice when compared with controls (c-Kit(+/+)) (P < 0.05). In parallel, a reduction in pancreatic duodenal homeobox-1 and insulin gene expression in whole pancreas as well as isolated islets of c-Kit(W-v/+) male mice was noted along with a decrease in pancreatic insulin content. Furthermore, the reduction in beta-cell mass in male c-Kit(W-v/+) mice was associated with a decrease in beta-cell proliferation. Interestingly, these changes were not observed in female c-Kit(W-v/+) mice until 40 wk of age. Our results clearly demonstrate that the c-Kit receptor is involved in the regulation of glucose metabolism, likely through an important role in beta-cell development and function.
    MeSH term(s) Animals ; Blood Glucose/analysis ; Cell Proliferation ; Cell Size ; Diabetes Mellitus, Experimental/blood ; Diabetes Mellitus, Experimental/genetics ; Diabetes Mellitus, Experimental/pathology ; Diabetes Mellitus, Experimental/physiopathology ; Fasting/blood ; Glucose Intolerance/genetics ; Insulin/metabolism ; Insulin Secretion ; Insulin-Secreting Cells/pathology ; Insulin-Secreting Cells/physiology ; Mice ; Mice, Inbred C57BL ; Mice, Mutant Strains ; Proto-Oncogene Proteins c-kit/genetics ; Proto-Oncogene Proteins c-kit/physiology ; Sex Characteristics ; Time Factors
    Chemical Substances Blood Glucose ; Insulin ; Proto-Oncogene Proteins c-kit (EC 2.7.10.1)
    Language English
    Publishing date 2007-08-02
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 427856-2
    ISSN 1945-7170 ; 0013-7227
    ISSN (online) 1945-7170
    ISSN 0013-7227
    DOI 10.1210/en.2007-0387
    Database MEDical Literature Analysis and Retrieval System OnLINE

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